FIBROUS SHEET WITH IMPROVED PROPERTIES
收藏国家林业和草原科学数据中心2023-02-12 更新2024-03-07 收录
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FIELD: technological processes. SUBSTANCE: method of producing a foamed multilayer substrate， comprising obtaining a water-based foam containing at least 3??% by weight of indirect synthetic binder fibers， wherein the indirect synthetic binder fibers have an average length of more than 2 mm; co-forming a layer of a wet sheet made from water-based foam and a layer of cellulose fibers， wherein the cellulose fiber layer contains at least 60 wt% of cellulose fibers; and drying the combined layers to produce a foamed multilayer substrate. Multilayer substrate comprises first layer containing at least 60??% by weight of indirect synthetic binder fibers， having average length of more than 2 mm; and a second layer comprising at least 60 wt% cellulose fiber， wherein the first layer facing the second layer， and wherein the multilayer substrate is characterized by a wet / dry fracture strength ratio of at least 60??%. EFFECT: disclosed is a method of producing a foamed multilayer substrate. 20 cl， 2 dwg， 3 tbl
提供机构：
国家林业和草原科学数据中心
创建时间：
2023-02-12
