Harzfolie und Harzform

Details

Veröffentlichungs-Nr.

EP4163079

Aktenzeichen

EP22200296

Anmeldetag

7. Oktober 2022

Veröffentlichung

9. April 2025

Erteilung

9. April 2025

Rechtsraum

EP

IPC

B29C44/04B29C44/06B29C44/14B29C44/24B29C44/32B29C44/56B29C44/22// B29C44/50B29L7/00

Abstract

A resin sheet is provided that provide both light-weight properties and mechanical strength using a thermoplastic resin with high deflection temperature under load. The resin sheet 1 is formed from a thermoplastic resin, including: a core layer 2, the core layer being a foam resin layer; and skin layers 3 located outward of the core layer 2 as determined along the thickness direction, the core and skin layers forming a continuity. The core layer 2 includes a region A1 and regions A2 each located between the region A1 and the associated skin layer 3. The regions A2 has a lower average porosity than the region A1, said average porosity being lower than 50 %. The thermoplastic resin has a deflection temperature under load not lower than 90 °C. The resin sheet has a thickness of 1 to 40 mm. Each skin layer has a thickness of 5 to 50 % of the thickness of the resin sheet. Thus, in a thermoplastic resin having a deflection temperature under load not lower than 90 °C, the thickness of the resin sheet and the thickness of the skin layers are appropriate, thereby providing both light-weight properties and strength.

Anmelder

Firma

Maxell, Ltd.

Land

🇯🇵 Japan

Fachgebiete