Foaming agent, composite packaging material with frosted effect and preparation method of composite packaging material
By using a foaming agent composed of sodium bicarbonate and sodium citrate, the problems of complex and costly frosted film processes in existing technologies have been solved, enabling the preparation of composite packaging materials with a frosted effect at low cost and low usage.
CN122127654APending Publication Date: 2026-06-02伊利伊诺科技(上海)有限责任公司 +2
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Patent Information
- Application Number
- CN202411754461.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-30
- Publication Date
- 2026-06-02
AI Technical Summary
Technical Problem
Existing technologies for producing frosted thin films are complex and costly.
Method used
A foaming agent composed of sodium bicarbonate and sodium citrate, combined with alkane oil and additives, is used to foam the product at a dosage not exceeding 1.5 wt% to form uniform and dense cells, thus preparing a composite packaging material with a frosted effect.
Benefits of technology
The process is simple and low-cost, with virtually no loss of material strength, forming uniform and dense pores that produce a frosted effect.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention provides a foaming agent. The foaming agent comprises 15 wt%-30 wt% of sodium bicarbonate, 15 wt%-25 wt% of sodium citrate, 30 wt%-50 wt% of an oily solvent and the balance of an auxiliary agent, the sum of the mass percentages of the sodium bicarbonate and the sodium citrate does not exceed 50wt%. The invention further provides the composite packaging material with the frosted effect and a preparation method of the composite packaging material. The sodium bicarbonate and the sodium citrate with the total amount not exceeding 50 wt% are compounded and matched with the oily solvent and the auxiliaries, even and compact foam holes can be formed by foaming under the condition that the usage amount is not exceeding 1.5 wt%, the frosted effect is shown on the surface of the composite packaging material, the process is simple, and the cost is low.
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