发明名称 FIBROUS SHEETS COATED OR IMPREGNATED WITH BIODEGRADABLE POLYMERS OR POLYMERS BLENDS
摘要 Fibrous sheets are coated or impregnated with a biodegradable composition to render the sheets more resistant to penetration by liquids. Biodegradable polymer blends suitable for use in coating or impregnating a fibrous sheet can be manufactured from at least one "hard" biodegradable polymer and at least one "soft" biodegradable polymer. "Hard" biopolymers typically have a glass transition temperature of at least about 10°C, "Soft" biodegradable polymers typically have a glass transition temperature less than about 0°C. Another useful biodegradable polymer composition includes one or more biodegradable polymers and sufficient inorganic filler so as to render the treated sheet microwaveable. The biodegradable polymer compositions are especially well-suited for coating or impregnating paper sheets, e.g., 12-15 lb/3000 ft 2 tissue paper to yield food wraps. Food wraps will typically be manufactured to have good "dead-fold" properties so as to remain in a wrapped position and not spring back to an "unwrapped" form.
申请公布号 PT1660323(E) 申请公布日期 2014.03.10
申请号 PT20040743833T 申请日期 2004.06.02
申请人 BIOTEC BIOLOGISCHE NATURVERPACKUNGEN GMBH & CO. KG 发明人 SIMON K. HODSON
分类号 B32B27/10;B32B27/04;B32B27/12;B32B37/04;D21H19/14 主分类号 B32B27/10
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