美國
US 12,697,807 B2
Method for forming a stress-free multilayer PVC sheet material
US 12,697,807 B2 是美國專利商標局（USPTO）的核准專利，日期 2026-08-04。申請人：LICOPLAST SA; KREAFIN GROUP SA。PDF 可在本頁下載，未登入每天最多 5 篇。
- 申請人
- LICOPLAST SA; KREAFIN GROUP SA
- 發明人
- Yves MICHEL; Willy D'HONDT
- 公開日
- 2026-08-04
- 申請日
- 2023-05-31
- 文件種類
- B2 核准公告
- 也寫作
- US 12,697,807 B2 · US12697807 · 12697807
摘要
A method for forming a multilayer plastic sheet material is disclosed, where a first polymer mass is melted under pressure and is passed through an extruder head at a specified discharge rate in the form of a plastic strand in sheet form that is provided with one or more layers so that a multilayer plastic strand is formed. This is passed to two or more rolls of a finishing stand that processes the multilayer plastic strand into a sheet. After the plastic strand in sheet form leaves the extruder head, it is first passed between a top roll and a bottom roll of a roughing stand.…
這裡只列摘要開頭，完整內容在 PDF 裡。
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專利局網站： 美國專利商標局（USPTO）