Patent · US Active

Method and device for connecting fibre-reinforced webs

US11298886B2 · kind B2 · utility

0Cited by

2References

2Claims

0Family size

Assignee

Covestro Deutschland AG · DE

Inventors

Matthias Knaupp · Langenfeld, DE
Thomas Grimm · Temple, US
Henning Börger · Markt Erlbach, DE

Key dates

Filing date	Nov 30, 2020
Grant date	Apr 12, 2022
Priority date	—
Expiry date	Nov 30, 2040

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB29C66/81465
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

A process for joining two sheeting articles reinforced with unidirectionally aligned endless-fibres by ultrasonic welding, wherein the fibres are embedded in a matrix of polycarbonate and the sheeting articles have abutting ends that are substantially rectangular and substantially even. The process comprises (1) arranging the sheeting articles next to one another end-to-end in the region of the abutting ends in a welding apparatus between a sonotrode and an anvil, (2) welding the sheeting articles by means of ultrasound, wherein the sonotrode and the anvil exert pressure on the to-be-welded sheeting articles in the melting region between the sheeting articles and perpendicularly to the abutting ends of the sheeting articles, and (3) removing the sheeting articles that are welded to one another from the welding apparatus. Also provided is a second process for joining two sheeting articles, a sheeting article, an apparatus, and a multilayer composite.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.