23 Projection Screens 23

High-frequency welded hook & loop is available, please call for details and pricing.

Dimensions refer to the relaxed, un-tensioned state of the projection screen surface.

Normal Seam Direction is Vertical. In the case of Horizontal Seams, customer assumes all risk. We do not guarantee Horizontal seams as there is adverse stress due to excess weight from the overall size of the screen.

Unless otherwise specied at time of order, all high-frequency welded nished projection screens are folded and packed in a box for transport.

To receive projection screens as wrinkle-free as possible, projection screens must be rolled and shipped on a tube (rolling is an extra charge and must be stipulated by the customer at time of order. Practical limitations on size must be discussed.

In freezing conditions, projection screens must warm up to room temperature before removing from box or unwrapping from storage container.

Our projection screens are intended for interior use only with the exception of Arena 86, which can be used outdoors.

Our projection screens are not recommended for use with any other motorized roller mechanisms other than a Gerriets roller mechanism.

A few facts about PVC projection screens:

Most Gerriets projection screens are made of PVC (polyvinyl chloride),

an amorphous thermoplastic that is white, hard and brittle until it is

treated with plasticizers and stabilizers that make it a malleable material

useable for technical applications. Additional additives make the

material ame retardant.

The physical properties of PVC change with temperature, which means

that PVC projection screens become more supple under heat and harden

when they become cold. It is extremely important that our PVC projection

screens are handled and installed at ambient room temperature,

otherwise irreversible damage to the screen can occur in the form of

tiny cracks in the material.

Many amorphous plastics, including PVC, form small white lines when

stretched, folded, or otherwise stressed. This result is called Crazing

and creates tiny aws that normally are not seen under normal projection

conditions. However, depending upon the severity of the damage, these tiny

aws can turn into visible cracks in the projection screen.

MANUFACTURING STANDARDS & GUIDELINES

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