发明授权
US3967024A Frozen fish package 失效
冷冻鱼包

Frozen fish package
摘要:
A packaging folder formed from a paperboard coated on both surfaces with a coating resistant to water and water vapor, the coating so fractured to be pervious to air but substantially impervious to water. A process by which the coating layers are fractured to give the desired air permeability and water resistance by passing the coated folder around small diameter rollers.
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