Method for producing a film having good barrier 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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The present invention relates to a method for manufacturing a film having an oxygen transmission rate in the range of from 1 cc/m 2/24 h to 500 cc/m2/24 h according to ASTM D-3985， at a relative humidity of more than 50% at 25° C.， or higher than 75% at 25° C.， or higher than 85% at 25° C.， wherein the method comprises the steps of: providing a first suspension comprising a microfibrillated cellulose， wherein the dry content of the suspension is in the range of from 0.1 to 10% by weight， adding a wet strength additive to said first suspension， at an amount of from 0.1 to 10 weight-% based on the amount of microfibrillated cellulose (dry/dry)， thereby forming a mixture of the microfibrillated cellulose and the wet strength additive， applying said mixture to a substrate to form a fibrous web and drying said web to form said film. The present invention also relates to a film produced according to the method.
提供机构：
国家林业和草原科学数据中心
创建时间：
2023-02-12
