Polyethylene resin extruded foamed sheet and method for manufacturing the same
By controlling the crystallization temperature difference and tensile viscosity of linear low-density polyethylene, and combining specific physical foaming agents and extrusion processes, the problem of manufacturing polyethylene resin extruded foam sheets with high independent bubble rate and low apparent density in the prior art has been solved, achieving efficient manufacturing and rigidity enhancement under mild conditions.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- JSP CORP
- Filing Date
- 2025-12-12
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies make it difficult to manufacture linear low-density polyethylene extruded foam sheets with high independent bubble ratio and low apparent density under mild conditions, especially when making low-density extruded foam sheets, the independent bubble ratio tends to decrease.
Using linear low-density polyethylene under specific conditions, including controlling its crystallization temperature difference, tensile viscosity and Bagley-corrected shear viscosity ratio, polyethylene resin extrusion foam sheets are manufactured through an extrusion foaming process, and a foam layer is formed using a specific physical foaming agent and an extrusion device.
It enables the manufacture of polyethylene-based resin extruded foam sheets with high independent bubble rate and low apparent density under mild conditions, enhancing the rigidity of the extruded foam sheets and making them suitable for various applications.
Smart Images
Figure CN122404784A_ABST