Working with TEG
We can mount Prism cases on freestanding plinths or table-tops, on walls or on cantilever brackets. Plinth styles include cupboard, Access display storage drawer units, stone plinths, steel frames, open metal framework, timber and steel structures all of which can be customised.
The glass cover of all Prism cases is securely bonded into a locking metal frame. Glass to glass joints are bonded with a transparent UV cured adhesive. For smaller cases the glass cover lifts off when unlocked. Larger cases are hinged with opening and closing assisted by gas springs. For very large cases we can provide motorised lifting systems.
Museum-quality laminated security or anti-bandit specification glass is standard and this provides important protection from external UV radiation. The option of Optiwhite™ glass ensures that delicately coloured items such as illuminated manuscripts, textiles and art are seen in their true colours. Internal lighting is available with a choice of either fibre optic or LED, depending on the application.
Technical information
System sizes
Prism is available in a variety of standard sizes and specific made-to-order sizes, although careful consideration should be given to the ease of handling of larger cases and also the supporting plinths (if present).
Structural glass
9.5mm or 11.5mm thick laminated anti-bandit glass conforming to BS EN: 356P4A, is fitted as standard. The laminated glass we use also has the added benefit of filtering over 97% of UV radiation between the harmful wavelengths of 320 & 380 nanometres.
Your glazing options include:
- High quality low-iron content Optiwhite™ glass, which makes the objects on display look much better, as it doesn't have the green tint that is seen in standard glass.
- SCHOTT Amiran® low-reflective glass treatment is also available to further enhance the viewing experience. This treated glass is only 1% reflective compared to the normal 8% reflectivity of normal glass and offers an exceptionally clear view of the display objects.
System extrusions
The showcase structure is made of custom designed aluminium extrusions, which are powder coated as standard.
Access
The PrismHD system is normally opened by removing the Abloy locks, attaching a glass sucker to the hood, then raising gently - the system has fully enclosed hinges, and internal gas-springs which assist with the opening/closing.
With a fully glazed case the hinges are at the bottom/back and normally have horizontal gas-springs mounted within the case framework. If the case has a solid back (for positioning against a wall or back-to-back with another case) the hinges are at the top/back and the gas-springs are mounted vertically (extending into the plinth). A lift-off option is available, though only for very small cases.
Locking
Each case is equipped with one or more extractable Abloy high security CL291 cartridge locks, which can be suited to suit individual requirements.
Lighting options
The PrismHD system can be fitted with internal lighting in the form of either an LED or Fibre Optic gantry as standard. Other lighting options are available.
Power supply
Each case (if fitted with lighting or active environmental control) requires an external power supply (from below). All connections utilise standard IEC plugs and sockets with no wiring by the user being required.
Seals
Extruded silicone seals are fitted all round the case edges. Cases typically have an air exchange rate of 0.1 (or better) per 24 hours.
Environmental control
Each case can be equipped with the following options:
- A low capacity passive system using a conditioning material reservoir beneath the internal base display board.
- A high capacity remote passive system using a conditioning material reservoir in the supporting plinth (this can be serviced without opening the showcase).
- A fully active climate control system can be located in a supporting plinth or an adjacent structure. A constant power supply is required for this option.
Base display board
The standard base display board is manufactured from ZF-MDF, which is sealed with a water-based acrylic lacquer and wrapped in fabric from the Baumann Ultra range. Alternative panels and finishes are available.
Case plinth
Where applicable, the standard supporting plinths (or individual plinth legs) are manufactured from ZF-MDF with integral levelling adjusters. The plinth is normally painted and may easily be removed, repaired and/or repainted if required. Alternative construction methods and finishes are available.
