Fixing film with thermal shrinkage effect and preparation method thereof
By combining modified silica with high-performance resin, a fixing film tube sleeve with heat shrinkage effect is formed, which solves the problems of complex preparation and poor printing effect caused by the use of adhesives in the prior art, and achieves a more efficient and flatter fixing film performance.
CN119668066AActive Publication Date: 2025-03-21SHENZHEN HUAZHIMEI TECH CO LTD
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Patent Information
- Application Number
- CN202411719833.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-28
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2044-11-28
AI Technical Summary
Technical Problem
The existing fixing film needs to be added to the coating layer and the tube sleeve layer for tight connection, resulting in complex preparation process, cumbersome drying process, and easy introduction of bubbles, affecting the printing effect.
Method used
Materials such as PFA resin, polyethylene, polyurethane, etc. are used as the matrix resin, and silica is modified by perfluoric acid, unsaturated carboxylic acid and acrylic acid to form a release layer tube sleeve with a heat shrinkage effect, avoiding the use of adhesive.
Benefits of technology
The flat surface of the fixing film is achieved, the mechanical properties and production efficiency are improved, the bubbles and wrinkles are avoided, and the printing effect is significantly improved.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention relates to a photographic fixing film with a heat shrinkage effect and a preparation method thereof. The photographic fixing film is of a multi-layer structure and sequentially comprises a base material, a bottom coating layer, a silica gel layer, a surface coating layer and a heat shrinkage layer from inside to outside. The heat shrinkage layer is prepared from the following components in parts by mass: 30 to 50 parts of PFA resin, 40 to 50 parts of polyethylene, 10 to 30 parts of polyurethane, 5 to 10 parts of polytetrafluoroethylene, 5 to 8 parts of modified silicon dioxide particles and 1 to 5 parts of auxiliaries; wherein the modified silicon dioxide particles are a product obtained by copolymerizing hydroxylated silicon dioxide, silicon dioxide partially grafted with perfluorinated acid and silicon dioxide partially grafted with unsaturated carboxylic acid with acrylate. The release layer pipe sleeve with the thermal shrinkage effect prepared by the invention not only has good mechanical properties, but also can uniformly shrink after being heated, avoids the formation of defects such as bubbles and wrinkles, has a smoother surface, improves the production efficiency, and overcomes the defects in the prior art.
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