Vacuum Sealing Machines remove the air from a bag,sometimes replacing it with inert Nitrogen, then hermetically seal the package to give long-term oxygen free protection for the contents. For operator safety CXD offer an exhaust which allows a hose to be attached to extract dangerous mould spores that can be present when dealing with old, wet or damaged texts.
High oxygen barrier enclosures like ArchiPress pouches give the conservator a new weapon in the struggle to resist the persistent decay caused by time, pests and disasters. The strong air and watertight pouches give additional protection against acidity, atmospheric pollution, floods, fire extinguishers, damp, mould, mildew, insects, vermin, careless handling and damage in transit. Anoxic enclosures are used for pest eradication, disaster recovery and ‘Squelch’ drying and to slow down oxidation and damage from UV light.
Compared to conventional envelope storage, vacuum storage has the advantage of saving between 40 to 50% of shelf space for the same volume of documents and could effectively double the capacity of an archive’s shelving without the addition of a single extra shelf.
The special vacuum-sealed pouches protect their contents against unauthorised access to security documents. The opening of pouches cannot go unnoticed and requires the use of an ArchiPress machine to re-seal them. The pouches can also be printed with corporate logos and security or data retrieval information. In addition, coded seals can be supplied that fit in to the machines effectively branding information into the weld.
In 1997 Stuart Welch invented a method of drying wet books and paper document called "Squelch Drying" using a system onvacuum packing. Following rapid support from the British Council the system is being used on a larege scale to recover water damaged books and documents from the Prague flood of 2002.
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CXD Vacuum Chamber Machines
A vacuum chamber removes the air out of a bag by use of a vacuum pump. On completion the bag is then sealed. Equipped with a clearly laid out and easy to program digital control panel, each machine features a 10-program memory. Additional filler plates are supplied in order that the working height inside the chamber can be adjusted for a variety of sizes of bag.
CXD Vacuum Impulse Sealer
Both sealing bars are heated and can be positioned vertically and horizontally with four positions in between, to suit the working position. The machine is supplied with a 5m3/hr vacuum pump and a water discharge system and is mounted on wheels for manoeuvrability.