A polypropylene processed sheet and a sealed article prepared therefrom
By designing a composite structural layer and controlling the polypropylene resin and glass fiber content in a gradient manner, the problems of insufficient durability and molding of complex sealing components by traditional glass fiber reinforced polypropylene sheets have been solved, achieving a high-strength and durable metallurgical bonding effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- GUANGZHOU KINGFA CARBON FIBER NEW MATERIALS DEV
- Filing Date
- 2026-03-31
- Publication Date
- 2026-07-17
AI Technical Summary
When preparing complex sealing components, traditional glass fiber reinforced polypropylene sheets are difficult to balance molding performance and interlayer bonding strength. Compression molding suffers from uneven fiber distribution, while injection molding lacks durability.
The composite structure layer design is adopted, with the melting point of polypropylene resin and the glass fiber content of the inner layer and the outer layer respectively controlled. The inner layer has a high melting point and high content, while the outer layer has a low melting point and low content. Metallurgical bonding is achieved through an integrated injection molding and compression molding process, resulting in gradient melt flow adhesion.
It achieves excellent molding effect for complex structures and strong bonding between layers, with high stress resistance, high interfacial shear strength, no peeling, and excellent overall performance.
Smart Images
Figure CN122402012A_ABST