一种高阻隔阻燃食品包装膜及其制备方法
A high-barrier, flame-retardant food packaging film was prepared by chemically bonding modified DOPO, crosslinking and blending a flexibility agent with melamine resin and polyvinyl alcohol. This solved the problems of flame retardant degradation and poor compatibility in existing technologies, achieving a combination of high barrier properties, flame retardancy, and flexibility, and avoiding the migration and precipitation of plasticizers.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- YANGZHOU HUAYU CO PACKAGING LTD
- Filing Date
- 2025-06-04
- Publication Date
- 2026-07-17
AI Technical Summary
When improving the flame retardancy and barrier properties of existing food packaging films, the dense structure of the polymer matrix is easily damaged, resulting in a decrease in barrier performance. Furthermore, the flame retardant has poor compatibility with the matrix, affecting the uniformity and strength of the film. At the same time, the addition of physical plasticizers can lead to migration and precipitation problems.
By employing a chemical bonding modification method, highly efficient and environmentally friendly DOPO flame retardant, long-chain fatty acid flexibility agent, melamine resin, and polyvinyl alcohol are crosslinked and blended to form a high-barrier flame-retardant food packaging film. DOPO provides flame retardancy, melamine resin provides rigidity and flexibility, long-chain fatty acids improve brittleness, and the PVA matrix provides gas barrier properties.
It achieves a combination of high barrier properties, halogen-free flame retardancy, good flexibility and mechanical strength, avoiding the problems of decreased barrier properties and material embrittlement in traditional methods, and also preventing plasticizer migration and precipitation, thus improving the stability and safety of packaging films.