Paper-plastic-aluminum heat preservation container based on multi-layer composite barrier and preparation method of paper-plastic-aluminum heat preservation container

Through a multi-layered composite structure design, including an inner layer, a heat-reflective layer, a fluffy layer, and an outer layer, the paper-plastic-aluminum insulated container solves the problems of insufficient insulation performance and high plastic consumption, achieving extended insulation time and environmental benefits, and is suitable for takeout and food storage.

CN122276292APending Publication Date: 2026-06-26HANGZHOU SHUANGHAI DEPT STORE CO LTD
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Patent Information

Application Number
CN202511840406.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Priority Date
2025-12-05
Filing Date
2025-12-08
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

Existing disposable insulated boxes have insufficient insulation performance, short temperature control time, and high plastic consumption, resulting in poor user experience and huge environmental pressure.

Method used

It adopts a multi-layer composite structure design, including an inner layer of food-grade polypropylene or polyethylene, a heat-reflective layer of aluminum foil, a fluffy layer of paper, and an outer layer of hollow or micro-foamed PP. Through the synergistic effect of multiple layers, it enhances the heat insulation performance and reduces the use of plastics.

Benefits of technology

It significantly extends the heat preservation time, reduces plastic consumption, improves the user experience, meets environmental protection requirements, and is suitable for takeout and food storage.

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Abstract

The invention discloses a paper-plastic-aluminum heat preservation container based on multi-layer composite barrier and a preparation method of the paper-plastic-aluminum heat preservation container. The heat preservation container comprises a container body and a container cover connected with the container body through a concave-convex meshing sealing structure. A protruding table is arranged on the edge of the container body, and the container body comprises an inner layer, a heat reflecting layer, a fluffy layer and an outer layer which are distributed from inside to outside. The inner layer is a food-grade contact material layer and comprises food-grade PP or food-grade PE or a PP / PE composite material; the fluffy layer is made of food-grade paper or materials with the same characteristics, the heat reflection layer is an aluminum foil layer or a material with a strong heat reflection effect, the outer layer is a PP plastic protection layer, and the fluffy layer forms a large number of closed air cavities to further block heat conduction and heat convection; the outer layer is a PP layer or a micro-foaming PP or PP hollow structure so as to form an additional heat barrier; under the synergistic effect of the multi-layer structure, the heat preservation time is prolonged, the overall experience of take-out users or take-out users is improved, and the shelf life of food factories is prolonged.
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