Title: Sheet material for photographic printing paper packing bag
Application Number: 200520132965 Application Date: 2005.11.16
Publication Number: 000000000 Publication Date:
Approval Pub. Date: 2007.01.24 Granted Pub. Date: 2007.01.24
International Classifi-cation: G03C3/00;B32B27/10
Applicant(s) Name: Yao Heng Address:
Inventor(s) Name: Yao Heng
Attorney & Agent:
Abstract:
    The utility model provides a sheet material for producing photographic paper packaging bag. It has multilayer material structure, which comprises kraft paper layer infiltrating and compounding PE plastic layer, and black PE plastic layer bonded with kraft paper layer via the stickiness of the PE plastic layer and bonded with nylon film BOPA layer via adhesive. Compared with the prior art, the sheet material has the thinner material, enhanced strength, and improved shock resistance and reusability of bag. The two black PE plastic layers (50 μm) improve the light proof property of bag, and the food packaging-used polyurethane adhesive has reduced toxic substances level comparing conventional adhesive, so that it is environmentally friendly and has reduced damage to the health of people who contact the packaging bag.
Time: 10
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