Method and device for producing a hard-foam film
US12083698B2 · kind B2 · utility
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1References
15Claims
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Key dates
| Filing date | Jul 23, 2020 |
| Grant date | Sep 10, 2024 |
| Priority date | — |
| Expiry date | Jul 23, 2040 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B2266/08
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method for producing a hard-foam film, for use as a core layer in sandwich composite elements, having an increased compressive strength along a thickness extension extending perpendicularly to its surface extension, from a foam block (3) of a thermoplastic, extruded, in particular partially crystalline and/or closed-cell, plastic rigid foam material, PET.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.