Polypropylene resin composition, laminate and method for producing same
By using a specific combination of polypropylene resin, adjusting the proportion and composition of the resin, optimizing the molecular structure and melting properties of the resin, the necking problem of polypropylene composite materials during high-speed forming at high temperatures is solved, and the effect of high transparency and high-speed forming is achieved.
Patent Information
- Application Number
- JP2021085983
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- Priority Date
- 2020-06-02
- Filing Date
- 2021-05-21
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2041-05-21
AI Technical Summary
It is difficult for the prior art to perform hot melt diffusion forming of high-speed polypropylene (PP) composite materials at high temperatures, and the polypropylene composite materials are prone to neck-in when expanding and forming at high temperatures, affecting the transparency and quality of the finished product.
Using a specific combination of polypropylene resins, including 20% to 80% of polypropylene resins with high melt tension (X), and 20% to 80% of polypropylene resins with moderate melt tension (Y), the molecular structure and melting properties of the resin are optimized to reduce necking and improve the transparency and high-speed forming ability of the finished product.
Polypropylene composite materials that undergo high-speed hot melt diffusion forming at high temperatures are realized, reducing necking phenomenon, improving the transparency and high-speed forming ability of the finished product.