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'Queries re heat sealing polythene sheet'
2004\06\16@225427 by Peter van Hoof

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I have never actually tried this but have come up with an idea that might
just work.

Since you have a clear layer on top and a black one on the bottom you may
have luck exposing the
plastics with concentrated light (halogen bulb or similar) thru a slit
heating the boundary more than anything else.
This heating could occur while moving the bulb (or plastic) followed by a 2
roller wheels to seal it.
Might just work in this situation the big advantage would be no hot metal
touching the plastic


Regards Peter  van Hoof

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