Packaging bags

JP1822489SActive Publication Date: 2026-03-25DAIWA PACKS
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Designs
Current Assignee / Owner
Filing Date
2025-08-01
Publication Date
2026-03-25

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Abstract

This product is a packaging bag used to seal the contents of microwave-heated food items. When the contents are heated in a microwave oven while sealed, the internal pressure of the steam causes the U-shaped seal to peel off, and steam is released through a slit in the unsealed area inside the U-shape, reducing the internal pressure. This product is made of a laminated film mainly composed of plastic, and the edges are sealed with heat seal.
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