Within a hospital environment, Vision Panels provide a simple yet reliable solution to the problem of balancing the need for staff supervision against a patient’s right to privacy. At the turn of a handle, the vision panels enable controlled observation whilst exceeding the strictest of Infection Control regulations.
For cleanroom, pharmaceutical and research industries, vision panels enable the discreet, controlled monitoring of subjects without inducing undue distress or alarm. All vision panels are specifically designed to resist the harshest of cleaning regimes, especially with the advent of new cleaning technologies such as VHP (Vaporized Hydrogen Peroxide).
Obscure
The Obscure range of vision panels has a translucent finish that allows the partial transmission of light without the ability to render detailed images through the window. This effect enables the user to identify personnel approaching from the opposite side of the door whilst maintaining a high level of patient privacy.
Blackout
The provision of an undisturbed environment from external activity is essential in many operating theatres, pharmaceutical laboratories and holding cells. When closed, Blackout vision panels completely block the transmission of light through the window.
Flush Fit
In healthcare, pharmaceutical and research environments alike, hygienic design is of utmost importance. To this end, the removal of ledges and crevices along with material selection is the core feature of the Flush Fit vision panels.
Flush Fit vision panels are custom designed to match the exact door thickness to achieve a seamless, “wipe-down” finish with the door face.
Retro Fit
The Retro Fit version comprises of a privacy vision panel housed within a unique, secret-fix (powder coated metal or stainless steel) frame and enables the upgrading of existing door vision panels to include the switchable privacy afforded by the range of vision panels. The surface mounted unit may be fitted without prior removal of existing glazing, thereby minimizing disruption and reducing installation time. Retro Fit units are often used to provide x-ray and laser protection upgrades to the existing window aperture.
Laser Protection
The patented LaserBloc system provides shielding against all wavelengths of medical laser whilst housed within a sealed glass unit. This brings multiple benefits:
- Allows multiple lasers to be used within the same operating theatre
- Removes the need to predict future laser installations
- Minimum unit thickness of 20mm
- Can be incorporated into any of the models
- Maintains the hygienic design of all vision panels
- Can be interlocked with the laser device for full compliance with Health Building Note (HBN) 52 Pt. 4
X-Ray Protection
All vision panels can include x-ray protection through the use of x-ray shielding glass to the required lead equivalence.
Handles
Vision Panels are available with several operating handle options:
- Handles to one or both sides of the unit, irrespective of unit thickness
- 316 stainless steel or antimicrobial copper alloy
- Lever handle, anti-ligature or key operated types
- Shallow projection handles for sliding doors
Dortek manufacture a wide range of Hygienic Glass Doors & Side Screens to suit all applications where hygiene is of utmost importance. Some typical environments include:
- Pharmaceutical/Biopharmaceutical
- Life Sciences
- Healthcare
- Electronic Technologies
A glass door has similar hygienic properties to a GRP door where the doors have no crevices or cavities for bacterial growth and both systems can be used collectively, making it a popular choice for many specifications.
The doors are durable, look contemporary and modern and are ideal for providing visibility in controlled environments. They are also perfect for an open plan environment or confined spaces and each door can be manufactured to suit any opening size. The stainless steel frames are versatile and can be fixed to all wall structures whether it be concrete blocks, stud walls or panels.
Unique Features
- Stainless steel finished hinges
- Secretly fixed full wrap around frame
- Custom manufactured frames to suit specific wall thicknesses
- Frame available with/without frame stop
- No visible fixings
- Available with stainless steel pull handles and lock systems
- Matching side screens available
- Stainless steel leading edge protection
- Graphics and manifestations to suit
- Interlocking systems
- Air transfer grilles
Hygienic suitability, durability & technology
Dortek’s P Type, polyethylene door range is 100% recyclable, lightweight construction, easy to operate, tough yet lightweight. All doors have been specifically designed to offer reliable, safe and durable operation, meeting the increasing demands of retail and warehouse environments. This high density product is easy to clean and is ideal for supermarket warehouses and areas where a strong robust door is needed.
Some of the main features include:
- Water resistant.
- Lightweight and user friendly ideal for heavy traffic.
- Door frame options to suit different wall constructions.
- Double action hinges
- Can be fitted with bumpers.
- Windows flush with both sides of the door surface
Technical specification
| P Type door specification | |
|---|---|
| Manufacturer | Dortek Ltd |
| Door | Dortek P Type Double Action Swing Door |
| Sizes | The door blade is 15mm thick |
| Door Leaf | The door blades are solid high density polyethylene |
| Colour | White marbled |
| Door frames | 40mmx80mm RHS (Rolled hollow steel) frame powder coated white |
| Hinges | Stainless steel hinges with 180 degree swing. With ‘hold open’ or ‘no-stop’ facility |
| Glazing | 2 No. 15mm thick flush fitting acrylic vision panels per blade |
| Protection | PVC seal to the full height of the leading edge on each blade. PE bumpers, 10mm or 15mm thick to a height of 800mm to each side of both door blades. In Dust Grey (RAL7037) or Graphite Grey (RAL7024) inc cut out for bottom window |
| Fixing | In accordance with manufacturer’s recommendations and dependant on wall type |
Efficient project management
Our in-house teams each have extensive experience in design, development, project management, manufacturing, installation and service. With years of experience in specialist bespoke food industry and retail door systems, we use our detailed technical know-how to provide a solution based on your needs. Examples of some difficult environments where our door systems are required include:
- Traffic direction
- Privacy
- Cool air/Temperature
At Dortek, we realise the requirements of the food and retail industry and always assess them so that our product is aligned and best suited to your application.
“FDA recommends that the processing facility and its structures (such as walls, ceilings, floors, windows, doors, vents, and drains) be designed to be easy to clean and maintain and to protect the product from microbial, physical, and chemical contamination. For example, designing food contact surfaces to be smooth, nonabsorbent, smoothly bonded, without niches, and sealed would make these surfaces easier to clean and thus, would prevent the harborage of microbial pathogens”. FDA US. Food and Drug Administration
“Doors must be easy to clean and, where necessary, disinfect. This will require the use of smooth non-absorbent surfaces”. The Food Safety (General Food Hygiene) regulations 1995 Chapter 11.1.(e)
The food industry must maintain high standards of cleanliness when manufacturing products. Food processing represents a working environment which places extraordinarily high and specific demands on the operating resources as part of production. In this way, a high degree of hygiene is required in these areas where vigorous cleaning regimes are carried out.
Outstanding hygienic performance
As specialists, working in hygienic environments our products out perform all competing technologies. Our product range is constantly evolving to meet the increasing demands of controlled environments, ensuring that our customers have access to the very latest in door technology. Top quality is the only way to become ‘Supplier of Choice’. Dortek GRP hinged and sliding doors exceed all the above requirements due to their seamless, impervious moulded construction. Dortek GRP doors are lightweight, strong and easy to clean and disinfect with a built-in colour that requires no maintenance. When comparing hygiene performance between two products, e.g GRP & Steel, GRP is a void free door whereas steel doors often contains crevices which allow bacteria to grow undetected.
Our GRP doors have been developed taking into account all regulations within the food industry.
Dortek Doors within the food industry are regularly used in facilities certified by or built to the following standards:
- Current Good Manufacturing Practise (cGMP)
- Food and Drug Administration (FDA)
Ease of use
Dortek GRP doors are a lightweight construction which makes the doors easy to operate which is a clear advantage where frequent usage is concerned. Unlike GRP doors, steel doors often end up dropping or become misaligned over time, the hinge potentially weakens due to the weight and excessive wear, this leads to the door dragging and being difficult to operate and therefore non-compliant. A steel door is often used externally for security purpose but they are not ideal in heavy usage areas such as production facilities. When considering life cycle costs, a GRP door is much better value than a steel door. The life expectancy of a GRP door can technically last 25 years, whereas a steel door will often need replacing after 7 years or so. We are often seeing that a steel door in the end is often replaced with a GRP door.
Technical Innovation (Moulding)
The stainless steel mould, from which the Dortek door leaf is produced, has a vertical brushed finish, leaving the same smooth impression on both faces of the finished door. This leaves an attractive and durable finish to the door. The moulding trays are purposely produced to give a radius edge finish to the doors, which allows the fibre glass sheet to be wrapped around and overlapped at the edges. This ensures that both faces of the door are thoroughly joined during the moulding process, eliminating any possibility of the door ‘splitting’ along its edge length. The radius of the mould also eliminates ‘resin rich’ corners where the fibre glass cannot reach as this tends to be very brittle and easily damaged. The resins used are also colour pigmented through the skin giving a more durable finish in the event of impact damage. Dortek are the only manufacturer to laminac (edge seal) all 4 edges of the door as standard, not only the visible ones.
At the forefront of fire resistance technology
Our GRP doors have been fire tested to various international standards and therefore offer the unique combination of fire resistance. Dortek fire doors are unique in that they comply both with the highest levels of Current Good Manufacturing Practice (cGMP) and are regularly independently tested for fire intumescent detail.
Our unique tested and certified detail offers uniformity of appearance between fire rated and non- fire rated doors, enhanced aesthetics and hygienic performance and long term durability as the intumescent strip cannot be damaged or removed. We believe that only the Dortek product have been tested and certified with this detail. This detail is particularly relevant as a large number of the doors are fire rated and in food areas.
Dortek prides itself on its ongoing continuous investment in fire testing. You should not be tempted to accept a fire rated door just because it is marketed as ‘approved’. An “approved” door could mean that it is made up of components that are individually listed but never actually fire tested and certified as a complete working doorset. Dortek fire rated doorsets have undergone and successfully completed independent fire tests on a regular basis at UKAS and NAMAS approved Test Laboratories as can be seen below:
- British Standard (BS) 476 Part 22. Methods for determination of the fire resistance of non- load bearing elements of construction.
- European Norm (BS EN) 1634 – 1 : 2008 Fire resistance tests for door and shutter assemblies.
- Singapore Standard SS332 : 2000 Clause 4 Specification for Fire Doors. Singapore Productivity and Standards Board, PSB Listing Scheme : Class 1A
- Singapore Standard SS332 : 2007 Clause 4 Specification for Fire Doors. Singapore Productivity and Standards Board, PSB Listing Scheme : Class 1A
- TUV SUD production facility audit inspection
GRP is suitable for all food applications
Dortek have extensive experience in the food processing sector. GRP doors are suitable for all applications where hygiene & food safety is of the highest requirement. Dortek provide confidence from initial specification through to installation and service. We are committed to end user experience and this has led to our doors being installed in the following facilities worldwide:
- Meat and fish processing
- Dairies
- Infant Nutrition
- Coldstores
- Bakeries
- Dried milk processing
- In-flight catering
- Abatoirs
- Ready meals
- Cheese and Yoghurt Manufacturers
- Supermarkets
- Beverage Manufacturers
- Industrial kitchens (eg. for hospitals, hotels, prisons, armed forces etc)
In each of the above, Dortek GRP doors have withstood the most arduous and aggressive environments including the processing of cheese, chicken and fish every year.
Thorough cleaning and sanitation is becoming increasingly important in all processing environments and certain products on the market are more perishable and hygienically sensitive, particularly convenience foods in pre-packed portions. The microbial load of such products must be low to guarantee adequate shelf life and avoid spoilage during distribution. In this light our doors have been subjected to all chemical disinfection methods and high pressure wash downs and the aesthetics of the doors have remained un-touched due to the unique methods used in constructing a GRP door. These key benefits are:
- Seamless construction, easy to clean.
- Sealing against air, smoke and fire.
- Water resistant.
- Patented concealed hygienic intumescent strip unaffected by atmospheric moisture.
- Proven resistance to harsh cleaning regimes.
- Light weight and user friendly.
- Door frame options to suit different wall constructions.
- Windows completely flush with both sides of the door surface.
Efficient Project Management in the Food Sector
Our in-house teams each have extensive experience in design, development, project management, manufacturing, installation and service. With years’ of experience in specialist bespoke food industry door systems we use our detailed technical know-how to provide a solution based on your needs. Examples of some difficult environments where our door systems are required include:
- Dust
- Noise
- Traffic direction
- Odour
- Privacy
- Cool air/Temperature
At Dortek, we realise the requirements of the food industry and always assess them so that our product is aligned and best suited to your application.
Food Sector Case Studies
| Facilities |
|---|
| Arla |
| Müller |
| Nutricia |
| Wiseman |
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A Cleanroom is a controlled environment but is defined by ISO standards as ‘a room in which the concentration of airborne particles is controlled, and which is constructed and used in a manner to minimise the introduction, generation and retention of particles inside the room’. The classification of a cleanroom is dependant too the particle concentrate of air, otherwise known as microbes and contamination. These are controlled by the number of particles permitted per cubic metre at a specified particle size. Some typical environments are:
- Pharmaceutical – Biopharmaceutical – Life Sciences – Healthcare – Manufacturing – Electronic Technologies
There are three standards that measure the classification of a cleanroom:
- ISO 14644-1 Cleanroom Standards
- BS 5295 Cleanroom Standards
- US FED STD 209E Cleanroom Standards
Whether a cleanroom is an ISO class 100 or class 1000, Dortek Cleanroom Door Systems play an essential role in preventing cross-contamination as well as maintaining correct room pressures, air circulation rates and ensuring optimum operating efficiency.
Many cleanroom facilities have been built using traditional construction methods, concrete block or stud wall with on-site surface applied finishes, on more recently constructed cleanrooms they have been built to modular specifications with cleanroom wall panel systems. Modular build offers faster site build and faster sealing of the cleanroom envelope. It is also relatively easy to replace damaged areas either during or after construction and you are guaranteed a uniform finish across the whole cleanroom facility. In either construction Dortek’s installation of cleanroom doors is equally suitable for various dimensional openings and panel/wall thicknesses.
Our cleanroom door product range has seen continuous investment in design, development and manufacturing techniques that ensure they meet cGMP standards. One of the world’s top 10 pharmaceutical companies defined its own cGMP requirement for a cleanroom door:
The cleanroom door shall have a smooth, non absorbent surface and, where appropriate, be self closing and close fitting. The materials for construction should be:
- Easy to clean
- Non-fibrous and non-shedding
- Resistant to the accumulation of dirt and debris
- A barrier against the harbourage of dirt and debris
- Inert and not normally reactive to chemical or other agents used in the environment
Why GRP for cleanroom doors?
Great emphasis is placed on materials used for cleanroom construction. The following table highlights the mechanical properties of GRP compared to other structural materials.
GRP is the material of choice for modern cleanroom designers due to its non-porous and inorganic construction. A Dortek cleanroom door is manufactured from millions of strands of glass fibre and polyester resin. Cleanroom doors are produced with the following characteristics:
- Closed moulded process, seamless finish
- A product that has no seams or joins on the door or surfaces and no holes or crevices within
- Built in colour
- Non-shed material, compliant with BS 5295 part 0 1989. Approved for use in class 100, 1000, 10,000 and 100,000 cleanrooms
Door automations are supplied to suit the room design and requirements of the facility and this flexibility enables specifiers to concentrate on practical cleanroom solutions. Dortek automations, hinged or sliding facilitate efficient access to and from a controlled environment and prevent an increased loss of expensive clean air. In general, there are three airlock designs:
- Cascading pressure airlock
- Pressure bubble
- Pressure sink
These designs, combined or used individually, protect the controlled environment or prevent cross contamination between two process areas. When designing a cleanroom along with air locks, the process must be supported by the infrastructure, but these designs can be compromised if incorrect doors are specified. A Dortek cleanroom door can be interlocked or have air seals incorporated where required to control pre-determined air circulation and reduce airborne contamination within the facility; this can be a very effective way of reducing HVAC running costs, ensuring efficiency.
Dortek’s cleanroom doors do withstand/tolerate regular chemical cleaning, and due to the smooth surface, no joints or ledges of the door harbour bacteria, unlike steel, aluminium and laminated timber doors. Traditional painted steel or aluminium constructions deteriorate, flake and shed when exposed to common cleaning regimes; specifying GRP prevents future downtime due to contamination.
Click below for product descriptions:
- K Type SA Cleanroom GRP Door
- K Type DA Cleanroom GRP Door
- F Type SA Cleanroom GRP Door
- F Type DA Cleanroom GRP Door
- K Type Sliding Cleanroom GRP Door
Some applications are listed below:
- Swimming pools
- Commercial kitchens
- Pharmaceutical and biotech facilities
- Veterinary surgeries,
- Theme and water parks
- Dairies
- Dog kennels
- Zoos and aquariums
- Breweries and bottling plants
- Laboratories
- Hydrotherapy rooms
- Supermarkets
- Meat processing factories
- Chemical processing plants
- Paper pulping facilities
- Wet markets
Dortek Waterproof GRP doors will not rust, rot or warp in wet conditions unlike steel or timber laminate doors.
Door Construction
Dortek waterproof GRP doors have a moulded one piece construction with no joints, seams or crevices. The door is not made up of individual sheets and lippings but instead is pressure moulded for a smooth seamless fully encapsulated finish which is easy to clean, waterproof and resistant to harsh cleaning regimes.
Whilst materials such as hard plastic laminate are undoubtedly waterproof a very important consideration is how you then make this flat sheet material into a door. The answer is by using adhesives and lippings all of which are weak points in the doors construction and over time the combination of water / cleaning agents and wear through traffic using the door will break down the door construction. This is elevated to an even greater problem if the core material used is timber as this absorbs moisture, swells and both stops the door from functioning and supports fungal / bacterial growth.
Steel is a sheet material and must be formed into a door which again leaves folds, joints and welds which are weaknesses. Coated steel can be waterproof but again traffic wear will breakdown the coating leaving the core material to corrode. Steel is also a much heavier material than GRP and so doors manufactured from steel are harder to operate, less user friendly and have higher lifecycle costs due to wear on hinges and closing devices.
Fire Performance
Dortek waterproof GRP doors have been tested to various international standards and therefore offer the unique combination of proven water and fire resistance.
Dorteks patented intumescent strip which seals the door under fire conditions is concealed beneath the frame and door surface and therefore is not open to attack by moisture.
In contrast doors with exposed intumescent are open to moisture and the intumescent will degrade and affect the performance of the fire door. Open ends to the intumescent strip at the top and bottom plus hinge and lock locations mean the intumescent material can fall out contaminating the area around the door. Lastly the cut out in the door and frame which houses the intumescent strip is both a dirt trap and potential structural weakness particularly at the leading edges of the doorblade.
Click below for product descriptions:
- K Type SA Waterproof GRP Door
- K Type DA Waterproof GRP Door
- F Type SA Waterproof GRP Door
- F Type DA Waterproof GRP Door
- K Type Sliding Waterproof GRP Door
- F Type Sliding Waterproof GRP Door
Leisure Case Studies
Glass reinforced polyester (GRP) also known as fibre reinforced polyester (FRP) is immensely versatile and contains no organic material. FRP is extremely durable, clean, water-resistant material used in demanding environments where door performance and hygiene are critical. Dortek’s range of FRP doors conform to the latest good manufacturing practise (GMP) standards for any facility, whether pharmaceutical or nutritional. FRP doors otherwise known as GRP doors are manufactured using a unique pressure moulding technique that constructs a seamless non-porous high quality smooth finish to the door. This profound technology undertaken in the process of a FRP doors construction means the door doesn’t harbour bacteria. Cleanliness of many facilities means applications such as FRP doors are subjected to the toughest cleaning regimes. Dortek FRP doors withstand the toughest cleaning regimes including vaporised hydrogen peroxide (VHP), disinfectants and chlorine releasing agents through prolonged exposure. Hinged/sliding FRP seamless doors come in a range of built in standard colours.
It’s through 40 years of technical innovation that’s lead to Dortek FRP doors surpassing or meeting regulatory standards with hygiene and EN fire certification up to 5 hours.
Assurance that no matter where FRP doors are situated in a facility they will not peel, warp, swell, rust or rot unlike steel or timber doors. Dortek FRP doors are supplied as single action, double action, sliding or bi-parting, and hinged. A selection of door furniture can also be supplied including frames and ironmongery that compliments the features of the door.
Dortek can deliver FRP doors to any (Pharmaceutical – Laboratories – Cleanrooms – Hospitals – Leisure Facilities – Food Manufacturing) market sector globally.
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Dortek produce double and single glazed cleanroom windows with clear laminated safety glass to BS6206B:1981
Flush fitting cleanroom windows
- Stainless steel or powder coated steel frames.
- 2 hour fire rated tested to BS EN 1364-1
- Frames manufactured to suit various wall constructions and thicknesses.
- Frames can be made flush with wall or a wrap around channel profile.
- Double glazed 40mm thick sealed units.
- Integral blinds available
Dortek have developed their existing range of fire or non fire rated, hinged and sliding, GRP doors to include various levels of X-ray protection. Manufactured to have an equal appearance to standard Dortek doors without lead protection, the built in colour is aesthetically pleasing and requires no maintenance.
Dortek leadline doorsets incorporate lead sheeting in a range of thicknesses and particular care is taken to ensure this protection extends through the door frames. As the lead is encapsulated during the moulding process, the door & frame are completely seamless, forming an effective barrier to radiation in all directions.
X-ray doors are available with or without flush mounted windows.
Why X-ray doors?
Lead lined X-ray doors are normally used in hospitals to shield people from the harmful effects of X-rays. They can also be found in dental surgeries and animal health clinics.
Like all other forms of ionising radiation, X-rays are harmful to our health. In sufficient doses they disrupt the cells of the body.
In medical use the harmful effects of the X-rays are out-weighted by the medical benefits.
Where are Lead lined Doors specified?
Within the hospital, lead lined doors will be used in the following:
1. X-ray room:
When the targeted X-ray beam hits the human body, a small amount of the beam is deflected by the body and scatters outwards, hitting the walls, floor, ceiling and door of the X-ray room.
It is this small amount of X-ray that we help to contain using our X-ray doors.
2. CT scan room;
The 3-D computer image of the body is built up by taking multiple X-rays at incremental steps. The image is then viewed on a computer screen.
Like the simple X-ray machine, the X-ray beams direction are known and easily absorbed. Some scatter still occurs and has to be contained.
3. Radio-therapy room;
The radio therapy room is used for the treatment of patients. Radio therapy is the use of X-rays and similar rays to treat disease. The X-rays are targeted at the treated area in short bursts over a number of days.
Lead lined doors are not suitable for MRI rooms. MRI does not use X-rays. Dortek do not produce products for this application.
What are the governing regulations?
‘The Ionising Radiations Regulations 1999’ The legislation sets out the doses that all workers (medical staff) can be exposed to during their working day. This ensures that every effort is made to keep the levels of X-ray used in hospitals to a minimum, thus making shielding easier.
‘The Ionising Radiation (Medical Exposure) Regulations 2000’ The controlling body for this requirement is the National Radiological Protection Board and guidance on the lead thickness necessary for specific situations should be sought from it. To have an X-ray machine in place, it must be registered with the authorities Radiation Protection Advisor (R.P.A), and they have overall responsibility for the safe operation of the X-ray machines on their site.
X-Ray Door Specifications
Lead, having a high density is the material of choice for X-ray protection doors.
Leadline doorsets incorporate lead sheeting in a range of thickness and this protection extends through the door frames, forming an effective barrier to radiation in all directions. The appropriate lead thickness is specified by the Radiation Protection Advisor using the British Standard code number (e.g. BS Code 5 and BS Code 6, where Code 5 is lead of 5 lb/sq.ft and Code 6 is lead of 6 lb/sq.ft.
Whilst every attempt is made to make the X-ray door as impervious as possible to X-rays, some gaps will exist (under the door, the key hole in the lock etc). As we are only involved in containing scatter, this is acceptable.
Options available on Dortek doors
| Door Type | BS Code Lead (Thickness) | Fire Resistance | Door Weight (kg/m2) |
|---|---|---|---|
| Code 3 | 1.25mm | Yes | 14.63 |
| Code 4 | 1.80mm | Yes | 19.48 |
| Code 5 | 2.25mm | Yes | 24.41 |
| Code 6 | 2.70mm | Yes | 29.28 |
| Code 7 | 3.00mm | Yes | 34.18 |
| Code 8 | 3.40mm | Yes | 39.06 |
The door blade is moulded with the required lead sheet in it. This may add to our standard 40 mm thickness.
Ironmongery, hinges & door closers especially need to be considered with regard to the additional weight in a lead lined door.
Vision panels
As lead cannot be used in the vision panel, special x-ray glass which contains large quantities of lead oxide is used. The glass is specified in terms of ‘equivalent mm of lead’ or ‘Code 5 glass.
Dortek Fire Doors – A Unique Solution to your Fire Door Requirements.
Dortek Fire Doors are unique in that they comply both with the highest levels of Current Good Manufacturing Practice ( cGMP ) and are regularly independently tested for fire resistance to various International Standards.
The above diagram shows Dortek’s unique patented concealed intumescent detail.
Key features:
- Seamless construction, easy to clean.
- Sealing against air, smoke and fire.
- Water resistant.
- Patented concealed hygienic intumescent strip unaffected by atmospheric moisture.
- Proven resistance to harsh cleaning regimes.
- Light weight and user friendly.
- Door frame options to suit different wall constructions.
- Windows completely flush with both sides of the door surface.
Dortek prides itself on its ongoing continuous investment in fire testing. You should not be tempted to accept a fire rated door just because it is marketed as ‘approved’. An “approved” door could mean that it is made up of components that are individually listed but never actually fire tested and certified as a complete working doorset. Dortek fire rated doorsets have undergone and successfully completed independent fire tests on a regular basis at UKAS and NAMAS approved Test Laboratories as can be seen below:
British Standard (BS) 476 Part 22. Methods for determination of the fire resistance of non- load bearing elements of construction.
- 2001 Hinged Double Action – 240 minutes
- 2000 Sliding door – 116 minutes
- 2000 Hinged Double Leaf Stainless Steel Frame – 143 minutes
- 1999 Hinged Double Leaf GRP Frame – 186 minutes.
- 1988 Hinged Single Leaf GRP Frame – 144 minutes
European Norm (BS EN) 1634 – 1 : 2008 Fire resistance tests for door and shutter assemblies.
- 2011 GRP doorset in insulated panel/partition wall – 30 and 60 minutes
European Norm (BS EN) 1634 – 1 : 2000 Fire resistance tests for door and shutter assemblies.
- 2010 Vision panel in door flush finished both faces, no metal flanges – 180 minutes
- 2006 Hinged Double Leaf GRP Frame – 300 minutes
- 2006 Hinged Double Leaf Stainless Steel Wraparound Frame – 132 minutes
- 2006 Sliding door – 200 minutes
Singapore Standard SS332 : 2000 Clause 4 Specification for Fire Doors. Singapore Productivity and Standards Board, PSB Listing Scheme : Class 1A
- Certificate of Conformity No: 011437
2005 – Hinged Double Leaf – 180 minutes
- Certificate of Conformity No: 011438
2005 – Hinged Double Action- 240 minutes
Singapore Standard SS332 : 2007 Clause 4 Specification for Fire Doors. Singapore Productivity and Standards Board, PSB Listing Scheme : Class 1A
- Certificate of Conformity No: 012188
2009 Hinged Double Leaf GRP Frame – 240 minutes
- Certificate of Conformity No : 012189
2009 Hinged Double Leaf Stainless Steel Frame – 120 minutes
- Certificate of Conformity No : 012198
2009 Sliding Door – 30 minutes
- Certificate of Conformity No : 012199
2009 Sliding Door – 60 minutes
- Certificate of Conformity No : 012200A
2009 Sliding Door – 120 minutes
- Certificate of Conformity No : 012200B
2009 Sliding Door – 180 minutes
TUV SUD production facility audit inspection
- TUV SUD Product Certification granted for fire doors 29.1.2009
- TUV SUD Product Certification granted for fire doors 16.8.2010
Dortek Fire Doors are regularly used in facilities certified by or built to the following standards:
- Factory Mutual (FM)
- Current Good Manufacturing Practise (cGMP)
- Good Laboratory Practise (GLP)
- Food and Drug Administration (FDA)
- Bio Safety Level 3 (BSL3)
Dortek Fire Doors are used regularly by the following companies:
For over 20 years Dortek’s doors have been used extensively throughout the UK and Ireland by all major retail chains.
Retail/ Food Retail sector requirements
- Strong and hard-wearing with a long trouble free life span
- High level of hygiene performance, easy to clean and resistant to cleaning materials. Moisture and water resistant.
- Aesthetically pleasing requiring minimum or no decoration or re-painting
- Meeting standards of hygiene and DDA legislative requirements
- Competitively priced
- Requiring minimum maintenance
Dortek high performance acoustic doors
Available as:
- GRP acoustic doors
- Steel acoustic doors
- Timber acoustic doors
- Sliding acoustic doors
- Fire rated acoustic doors
- Noise reduction doors
Our Acoustic Rated Doors are supplied as an entire unit – door frame, door blade, hinges, automatic threshold seal (if applicable). Strong, durable construction. All doors are factory assembled and tested for correct alignment and fit.
Dortek manufacture and install a range of Acoustic Doors
- AK Acoustic Hinged Non Fire Rated GRP doors – up to db30
- AF Acoustic Hinged Fire Rate GRP doors – up to db35
- ASL Acoustic Hermetically Sealing Sliding Doors – 40db – 45db – 50db
- ASLF Acoustic Fire Rated Hermetically Sealing Sliding Doors – 55db/60 minute fire rated (EN 1634)
Our Acoustic Rated Doors are supplied as an entire unit – door frame, door blade, hinges, automatic threshold seal (if applicable). Strong, durable construction. All doors are factory assembled and tested for correct alignment and fit.
The figures in these tables represent the “average” decibel reduction from the noise source side of the doorset to the opposite, and apply to both hinge side to frame side and frame side to hinge side.
The following doorblades were tested in a GRP frame with a standard firtree seal in the doorstop and an automatic seal at the bottom of the door.
| Door type | Results achieved |
|---|---|
| Standard K Type GRP door | 25 decibel reduction |
| Lead lined K Type GRP door | 34 decibel reduction |
| Standard F Type GRP door | 29 decibel reduction |
| Lead lined F Type GRP door | 35 decibel reduction |
The following doorblades were tested in a STAINLESS STEEL frame with seals surface mounted onto the doorstop and an automatic seal at the bottom of the door.
| Door type | Results achieved |
|---|---|
| Standard K Type GRP door | 23 decibel reduction |
| Lead lined K Type GRP door | 30 decibel reduction |
| Standard F Type GRP door | 27 decibel reduction |
| Lead lined F Type GRP door | 32 decibel reduction |
As the doorset is tested through a range of frequencies from low to high, “average” is the figure across the full range of frequencies. Dependent on a particular frequency of noise, the decibel reduction capability of the doorset may be greater.
Applications where Dortek Acoustic Doors are used:
Hinged GRP Acoustic Door
- Hospitals
- Laboratories
- Plant Rooms
Sliding Acoustic Doors
- Lecture Theatres
- Recording/Br Studios
- Conference Rooms
- Test Cells
- Opera house
- Television studio
- Acoustic booths
- Audiology room
- Acoustic enclosure
- Engine test cells
- Music practise rooms
- Police interview rooms
- Study rooms
Specifying Sound Reducing Doors
- In designing and specifying with sound reducing (acoustic) doors, it is important to consider the average db rating rather than the maximum db rating.
- For example a 45db door will have an average of 45db of sound reduction on several frequencies. The maximum db rating of the same door is probably closer to 55db at 4000Hz.
- In real life conditions there will always be “flanking”, which is room-to-room sound transmission caused by vibration. It always depends on a particular situation but allow up to 3db.
- Obviously, the db rating of the wall/panel construction should always be at least that of the door for the overall acoustic solution to be effective
Hinged and sliding insulated doors finished in food safe white coated or standards for food preparation areas – EC/USDA stainless steel sheet for temperatures down to which meet the international.
They have robust construction with heavy duty rail system and furniture, fire resistance up to 1 Hour in accordance with the new European EN 1634-1: 2001 standards and can have manual or automatic operation with safe reliable electric drive units fully compliant to the latest standards.
Applications
Suitable for coldstores, food factories, dairies, kitchen / catering facilities, abattoirs
Options
- Various solutions for meat rail package
- Choice of RAL colours
- Mineral wool core
- Fire resistance up to 1 Hour
- Low voltage Heater Tape
Sliding Doors
Unique range of sliding doors for chiller and freezer applications 0°C to -40°C. available in two models and four options. The doorblades are constructed from series of interchangeable panels framed in heavy gauge stainless steel edge profiles.
A full range of fast acting roller doors for both internal and external applications. The door panel is manufactured from a tough multi-layer polyester UV stabilised and anti static treated.
The vertical guides incorporate seals to prevent draughts and the ingress of dust, insects and vermin. In case of impact the Brx breakout system allows the door panel to be released from the side guides minimising damage to panel
A patented spring balance system insures the panel will always be stretched tight resisting wind and over pressures and can be manually opened in case of emergency. Variable drive motors 240V or 415V for fast reliable operation. Stainless steel side and top covers are available for clean areas.
The doors can be used to save energy and create better working conditions where fast access is required e.g. heated or air condition buildings, to divide areas in manufacturing facilities to prevent cross contamination and maintain air pressures, reduce the sound of noisy plant and guard machinery.
Dortek Automation and Interlock systems are designed to provide safe, efficient and convenient means of opening and closing doors in a controlled environment. Our systems can be connected to many times of activation devices from basic push button to a fully integrated Building Management System.
Our products are available for supply and install either with doors we supply (as one package) or separately to fit to existing doors.
DORTEK Automation systems
- Over 30 years in house experience available – provide input and advice to end-users/ specifiers in optimising specification at building layout design stage
- Designed and assembled by Dortek at our factory
- Installed by our own engineers – no sub-contractors
- Installed at the same time as doors – one stop, seamless installation
- Fully guaranteed
- Service/ maintenance contracts are available
- ATEX certified
DORTEK Interlock Systems
- Can be applied to any number of doors from two doors (to form an air or light lock) to an entire building
- Doors can be hinged, sliding, roller, manual or automatic, or any combination.
- Interlocking can be either electrical or Pneumatic (for EX rated areas)
- Access by push button, keypads, swipe cards, sensors, keys or any combination of these.
- Interlocking can be
- Interlinked, Interlocked or Sequenced
- Locked or Unlocked (manual doors must be locked)
- Electrical, pneumatic or both
- Fully fail safe
Typical Interlock Matrix (3 door system)
| Door No | DO1 | DO3 | DO5 |
|---|---|---|---|
| - | Active | Active | Active |
| - | Open | Locked | Locked |
| - | Locked | Open | Locked |
| - | Locked | Locked | Open |
Today’s hospitals and medical centres have to comply with strict legislation and endure heavy usage with the minimum of maintenance. Dortek’s comprehensive range of GRP doors for operating theatres, X-ray rooms, sterile areas, mortuaries, and kitchens can be specified with confidence.
The doors are safe, reliable, robust, easy to clean and conform to all the latest BS, and NHS standards. Dortek through its team of experience project managers can advise on the correct specification to give many years of trouble free service.
The Dortek range of Glass Reinforced Polyester (GRP) doors complies with all the latest Good Manufacturing Practise (GMP) requirements in pharmaceutical and nutritional facilities. Dortek GRP doors have a pressure moulded smooth seamless construction which is easy to clean, is completely water resistant and does not harbour bacteria due to its non-porous smooth finish. A clear benefit of using GRP doors is that they stand up to the common cleaning regimes used in a lifescience environment such as Vapourized Hydrogen Peroxide (VHP), disinfectants and chlorine releasing agents. Dortek GRP doors contain no organic materials that would encourage the growth of bacteria and are made from materials which are fully recyclable.
Dortek’s advanced low energy manufacturing technique delivers an immensely versatile GRP material through moulding and combines light weight with an ultimate tensile strength door, easy to operate and durable. GRP doors typically weigh less than steel doors and so are much easier to operate and do not wear down hinges and operating devices so quickly. When factoring in life cycle costs, GRP doors are therefore much better value than steel doors. The integrated colour of GRP is aesthetically pleasing and needs little or no maintenance throughout the lifecycle of the product.
Unlike timber or steel doors, a GRP door will not surface peel, warp, swell, rot or rust, even in the most arduous conditions. Dortek supply a unique range of GRP doors as: single or bi parting sliding and single action or double action hinged door sets. Dortek manufacture GRP frames, stainless steel frames and aluminium frames all of which complement the features and benefits of the Dortek GRP door.
All GRP doors either meet or surpass regulatory standards for hygiene and are fully compliant with European Norm (EN) fire certification up to 5 Hours. Dortek’s factory is audited on a yearly basis by the German testing authority TUV Sud and many of the facilities which use Dortek GRP doors are Factory Mutual (FM) compliant.
Dortek are the leading supplier of GRP doors, with over forty years of product excellence and experience. Our technical innovation ensures we can deliver to the following market sectors globally: Pharmaceutical – Laboratories – Cleanrooms - Biotech – Lifesciences – Hospitals & Aseptic Rooms – Leisure – Swimming Pools – Saunas – Food Manufacturing & Dairies – Retail
Please take some time to look through our full GRP product range listed below or simply click on the link.
Our exhibition vehicle houses full working models of our hygienic door systems in a mock-up cleanroom environment. This video displays a pair of hinged GRP doors automated.
Hinged Automatic GRP door from Dortek on Vimeo.
[K Type Single Action GRP door] [K Type Double Action GRP door] [K Type Sliding GRP door]
[F Type Single Action GRP door] [F Type Double Action GRP door] [F Type Sliding GRP door]
[S Type GRP doors] [ R Type GRP doors]
K Type Single Action - Insulated GRP doors
Dortek K Type Single Action GRP doors otherwise known as single action GRP doors, single…
K Type Double Action - Insulated GRP doors
Dortek K Type Double Action GRP doors otherwise known as double action GRP doors, double…
K Type Sliding - Insulated GRP doors
Dortek sliding GRP doors have become increasingly popular, both in new buildings and as replacements…
F Type Single Action - Fire Rated GRP Doors
Dortek GRP fire doors are regularly tested to various International Standards for fire resistance.
F Type Double Action - Fire Rated GRP Doors
Fire rated GRP doors tested to BS 476 part 22 ranging from 30 to 240…
F Type Sliding - Fire rated GRP Doors
Fire GRP doors tested to BS 476 part 22 ranging from F30-F90, EN1634-1 fire resistant,…
R Type Swing GRP Doors
Hygienic Double Action Traffic Doorset. Safe, reliable, easy to operate, maintenance free doors. Conforming to…
MF5 Hermetically Sealed sliding door
The door panel is manufactured from a non-organic core faced with hard plastic laminate framed…
Fire rated MF5 Hermetically sealed sliding door
The door panel is manufactured from a non-organic core faced with hard plastic laminate framed…
MF5 Hermetically sealed sliding door, xray shielded
The door panel is manufactured from a non-organic core faced with hard plastic laminate framed…
DT 250 light to medium single leaf chiller and freezer doors (sliding)
Rail system type M7 hermetic with stainless steel hangers and nylon bearings
DT 400 heavy duty single/bi-parting chiller and single leaf freezer doors (sliding)
Rail system type M7 hermetic with stainless steel hangers and nylon bearings
DT 250 light to medium single leaf chiller and freezer doors (hinged)
Hinged chiller and freezer doors are available in custom made sizes for temperature range 0°…
Transfer Hatches
304 Grade Stainless Steel Transfer Hatch with glazed doors. Available as three standard sizes (non…
Stainless Steel Frames
Dortek Stainless Steel frames are suitable for non fire rated and fire rated doors up…
MF5 Hermetically Sealed Glass sliding door
The door panel is manufactured from non-organic materials framed with flush aluminium profile. The combination…
DT Electric Sliding Door Operator
Automatic sliding door systems are often the focus of above average demands concerning functionality and…
DT Electric Swing Door Operator
When a door is too heavy to operate manually, an automatic swing door system is…
Cutting edge hydrogen peroxide dry vapour fumigation solution.
Bio decontamination Ltd (BDL) provides cutting edge hydrogen peroxide dry vapour fumigation solutions to the…
F Type FRP Single Action Fire Doors
Fire rated FRP doors tested to B2 476 part 22 ranging from 30 to 240…