DE3400330A1 - Process for producing a multi-layer three-dimensionally formed covering - Google Patents

Abstract

In a process for producing a three-dimensionally formed covering comprising a textile cover layer and a dense layer for lining a vehicle body, it is proposed that the dense layer/s is/are laid on the reverse side of the cut-to-size textile cover layer, and the layers are subsequently heated and bonded together in a mould during press moulding. As the two layers do not have to be bonded together in a separate operation, bonding taking place simultaneously during press moulding, one operation is dispensed with.

Description

Method for producing a multilayer,

spatially deformed covering.

The invention relates to a method of manufacturing a multi-layer, spatially deformed covering for lining a vehicle body, according to the preamble of claim 1.

In vehicle construction, the use of a carpet alone can usually insufficient sound insulation can be achieved, so that additional layers are required which form a mass-spring system and are therefore able to reduce the noise level to reduce effectively in the passenger compartment. The heavy layer that forms a "mass" is usually connected to the back of the textile top layer used as a carpet, while the layer of dynamically soft material that forms the "spring" is loosely underneath the composite of textile top layer and heavy layer is placed.

Thermoplastics or, for example, are suitable for the heavy layer bituminous masses; for the elastic underlayer, for example, foam or mats made from synthetic or natural fibers.

However, the subject of the method according to the invention is the connection the textile top layer with the heavy layer. For this purpose it is from DE-AS 20 06 741 known to deform the textile top layer and the heavy layer separately and create the desired bond by gluing the two parts together. Divided by two Deformation processes, this process is very complex.

In DE-AS 20 06 741 a method is also described in which a composite of textile top layer and heavy layer serves as the starting material and this together in the desired manner to form a floor covering for vehicle bodies is deformed. In this procedure it is necessary to first apply the two layers to be connected to each other and then deformed in a separate operation.

Finally, the same reference can be found in the reference infer that it is also possible, the textile top layer only locally with a Heavy layer to be coated =. According to the teaching of this publication, it is necessary to that either the textile top layer and the heavy layer of smaller size be deformed separately and then connected to one another by gluing or that a heavy layer blank is glued to the flat textile top layer and this composite is then deformed.

The present invention is based on the object of a generic Method of manufacture of a multilayer, spatially deformed Facing further training with a view to reducing the necessary process steps.

The object is achieved in that on the back of the cut. textile top layer, the heavy layers are loosely applied, followed by the layers heated and joined together in a molding tool during compression molding.

In that, on the one hand, both layers are deformed together and on the other hand, the connection of both at the same time during the deformation. layers takes place, at least one work step in the production of a multi-layer, deformed covering saved and thus the economy significantly increased. Furthermore, the elimination of the previously separate "lamination" process achieved that there is no longer any risk of thermal damage to the materials is. Tests have shown that just by pressing the heated Layers an intimate connection of the same is achieved, so that a separate adhesive layer can be omitted. Joining two layers together without adhesive is a common practice among experts often referred to as press lamination.

The inventive method is also particularly good for a fully automatic production suitable, in addition to automatic conveyor systems the positioning of the textile top layer or the application of the heavy layer sections " takes place by means of one or more handling devices. These devices ensure a precise placement of the heavy layer sections at the intended locations on the Back of the textile top layer. The provision of the boards (textile top layer and heavy shifts) can advantageously be used in conjunction with turntables or by means of Parking spaces with several acceptance positions take place, with acceptance points and storage disk are to be provided.

One or more handling devices can be used from these removal plates the removal of the carpet and heavy-shift blanks take place, with the compilation of the individual parts takes place in the subsequent work cycle. Then the continuation takes place of the loosely applied layers to the heating zone and from there to the molding tool.

The fact that both for the textile top layer, as well as for the Heavy layer circuit boards and no sheeting used is one possible Disturbance in the device or, in the case of defective material, the reject is essential less, since not many meters of the material empty through to remedy the defect the system must run.

In summary, it should be noted that the inventive Process the carpet or board to be coated no longer in a separate one Operation must be connected to the heavy layer, as this is done at the same time Deformation of the two layers takes place. It is possible to use the textile top layer to be provided with a heavy layer in several places. For the individual Sections can be heavy layer sections of different thicknesses without additional effort or different materials can be provided.

Claims (3)

Learn about patent claims for the production of a multilayer, three-dimensional deformed covering for lining a vehicle body, with one as a carpet Serving textile top layer is locally placed a heavy layer and with this be connected, d u r c h e k e n n n 2 e i c hn e t that on the back The heavy layer (s) are loosely laid on the cut textile top layer, the Layers are then heated and put together in a molding tool during compression molding get connected. 2. The method according to claim 1, d a d u r c h g ek e n n z e i c h n e t that the compression molding takes place in a cooled mold. 3. The method according to claim 1 or 2, d a d u r c h g e k e n n z e i c- h n e t that at least the application of the heavy layers by means of an or several handling devices.