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| - Illustrative examples of preferable substrate sheets may include those based on plastics such as polyester, polypropylene, cellophane, polycarbonate, cellulose acetate, polyethylene, polyvinyl chloride, polystyrene, nylon, polyimide, polyvinylidene chloride, polyvinyl alcohol, fluorine resin, chlorinated rubber and ionomer; papers such as condenser paper and paraffin paper; and unwoven fabrics.
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