POLYOLEFIN-BASED RESIN FOAMED SHEET, ADHESIVE TAPE, AND ELECTRONIC PRODUCT

• Main Author: WEI, Qiong
• Format: Patent
• Language: Chinese; English; French
• Published: 25.01.2024
• Subjects: ADVERTISING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; CRYPTOGRAPHY; DISPLAY; DISPLAYING; EDUCATION; GENERAL PROCESSES OF COMPOUNDING; LABELS OR NAME-PLATES; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PHYSICS; SEALS; SIGNS; THEIR PREPARATION OR CHEMICAL WORKING-UP; WORKING-UP

The present invention provides a polyolefin-based resin foamed sheet, an adhesive tape, and an electronic product. The polyolefin-based resin foamed sheet of the present invention has a residual amount of an azo foaming agent of less than 2000 ppm, a percentage of close area of 93% or above, and an elongation at break of 140-650% at 80°C in the MD direction. The buffer waterproof sealing adhesive tape for an electronic product of the present invention is composed of the polyolefin-based resin foamed sheet and an adhesive layer, which is coated on one side or both sides of the polyolefin-based resin foamed sheet. The polyolefin-based resin foamed sheet of the present invention has good buffer performance and water-blocking performance, and can play the role of support, buffer and protection in a display assembly, such that the overall thickness of the display assembly is reduced, and the display assembly has good waterproof and sealing performance. La présente invention concerne une feuille expansée de résine