BOPP Heat Seal Film for Mask Packaging High Transparency 20μm to 40μm Custom Width 1. Basic Information This BOPP heat seal film is designed for mask packaging with extremely high transparency, clearly displaying mask appearance and brand information. The base material is biaxially oriented polypropylene film, laminated with a heat seal layer on one or both sides, suitable for high-speed automatic packaging lines. The film has a smooth surface, stable heat seal strength, good
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