Method for processing thermoplastic films, thermoforming system, film supply station, film strip, use, and laminated part

Patent metadata

Field	Value
Publication number	US-9375875-B2
Application number	US-201214001706-A
Country	US
Kind code	B2
Filing date	Feb 28, 2012
Priority date	Feb 28, 2011
Publication date	Jun 28, 2016
Grant date	Jun 28, 2016

Abstract

A method for processing two different thermoplastic films in a thermoforming system selectively and variably brings on request cuts of the one or the other film in a conveyor through the thermoforming system, such that different successive cuts are conveyed by the conveyor to a thermoforming station and processed therein, and two successive cuts are joined into a film strip, either edge to edge or with an overlap.

First claim

The invention claimed is:

1. A method for processing two different thermoplastic films in a thermoforming system,
wherein on request selectively and varying from one film to another one, blank cuts are brought in a transport means through the thermoforming system so that different blank cuts are successively transported by the transport means to a thermoforming station and are processed there,
wherein two successive blank cuts are connected to one another so as to form a film strip; and
wherein a forward feed into a first clamping frame position takes place so that a clamping frame closes on a joint of the two blank cuts; and
wherein the blank cuts are provided with the length of a clamping frame so that the clamping frame closes at a first and at a second position on both joints of three blank cuts.

2. The method according to claim 1 , wherein in the machine direction, the blank cuts are firmly connected to one another, either edge to edge or with a slight overlap.

3. The method according to claim 1 , wherein in the vertical direction, the blank cuts are connected to one another.

4. The method according to claim 1 , wherein the blank cuts are connected to one another with plurality of connecting points and/or are provided with a connecting line; and
wherein the blank cuts are glued, sewed, welded together or are mechanically connected.

5. The method according to claim 1 , wherein blank cuts from different materials are fed.

6. The method according to claim 1 , wherein in dependence of the requested blank cut, a system program is varied.

7. The method according to claim 1 , wherein, hot melt is applied onto the film strip.

8. The method according to claim 1 , wherein the method is used for laminating a contour-formed carrier part or for performing films.

9. The method according to claim 6 ,
wherein a heat output is varied.

10. The method according to claim 8 ,
wherein the method is used for providing an interior surface part for a motor vehicle, and primarily by means of thermoforming or by means of back-injection of the film.

Assignees

• Staemmler Gernold
• Huber Reiner
• Kiefel Gmbh

Inventors

• Staemmler Gernold
• Huber Reiner

Classifications

• B29C51/16

  Lining or labelling · CPC title

• B29C51/46

  Measuring, controlling or regulating · CPC title

• B29K2995/0021

  Multi-coloured · CPC title

• B29C51/262

  Clamping means for the sheets, e.g. clamping frames · CPC title

• B29C51/02 Primary

  Combined thermoforming and manufacture of the preform · CPC title