Method and device for producing a fiber-reinforced semi-finished plate by ultrasonic welding

Patent metadata

Field	Value
Publication number	US-10940647-B2
Application number	US-201616070716-A
Country	US
Kind code	B2
Filing date	Dec 14, 2016
Priority date	Dec 17, 2015
Publication date	Mar 9, 2021
Grant date	Mar 9, 2021

Abstract

The present invention provides a continuous method for producing a fiber-reinforced semi-finished plate. The present invention also provides a device for carrying out the continuous method for producing a fiber-reinforced semi-finished plate. The present invention provides the fiber-reinforced semi-finished plate.

First claim

The invention claimed is:

1. A process for producing a fiber-reinforced semifinished panel comprising the following operations:
(1) unrolling two or more unidirectionally fiber-reinforced semifinished products from rolls;
(2) joining the two or more unidirectionally fiber-reinforced semifinished products to afford a fiber-reinforced semifinished panel sheeting by ultrasonic welding;
(3) cutting the fiber-reinforced semifinished panel from the fiber-reinforced semifinished panel sheeting,
wherein the two or more unidirectionally fiber-reinforced semifinished products are face to face superposed and are inseparably conjoined by ultrasonic welding;
wherein the two or more unidirectionally fiber-reinforced semifinished products are conjoined to an extent of more than 99%, based on the surfaces with which they face each other;
wherein the process is performed continuously; and
wherein the alignment of the fibers of at least one of the two or more unidirectionally fiber-reinforced semifinished products is distinct from the alignment of the fibers of the other unidirectionally fiber-reinforced semifinished product or products.

2. The fiber-reinforced semifinished panel produced by the process according to claim 1 .

3. A method comprising producing housing parts or housings or covers for IT devices, housings or housing parts of household appliances, or parts of automobiles or parts of aeroplanes utilizing the fiber-reinforced semifinished panel according to claim 2 .

Assignees

• Covestro Deutschland Ag

Inventors

• Knaupp Mattias
• Grimm Thomas
• Börger Henning

Classifications

• B29C70/30

  Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core · CPC title

• B29C66/81463

  comprising a plurality of single pressing elements, e.g. a plurality of sonotrodes, or comprising a plurality of single counter-pressing elements, e.g. a plurality of anvils, said plurality of said single elements being suitable for making a single joint · CPC title

• B29C66/83411

  Roller, cylinder or drum types (B29C66/83431 takes precedence; rollers, cylinders or drums moving relative to and tangentially to the parts to be joined B29C66/8362) · CPC title

• B29C66/721

  Fibre-reinforced materials (B29C66/729 takes precedence) · CPC title

• B29C65/7894

  of continuously moving sheets or webs · CPC title