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Adhesive tape and method for manufacturing it

An adhesive tape and strip-shaped technology, which is applied in the direction of adhesives, film/sheet adhesives, etc., can solve problems such as high cost

Inactive Publication Date: 2012-09-26
CERTOPLAST VORWERK & SOHN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In fact, before an effectively functioning adhesive coating is possible, the recesses on the surface of the nonwoven carrier must first be filled with adhesive, which of course leads to high costs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A nonwoven layer of polyester staple fibres, i.e. polyester fibers of finite length, was prepared having a mass of about 30 g / m 2 weight per unit area. The individual polyester fibers are aligned here mainly transverse to the machine direction and thus transverse to the longitudinal direction of the nonwoven web carrier. This achieves with regard to the produced adhesive tape that it can be torn particularly easily in the transverse direction compared to the longitudinal direction of the tape, that is to say by hand.

[0022] The relevant first nonwoven layer is then provided with stabilizing threads in the form of a thread composite on its surface. Here the stabilizing threads are laid down in the form of thin polyester threads and applied to the first nonwoven layer. A second nonwoven layer of the same construction is then laid on the assembly of the first nonwoven layer and the stabilizing threads and both nonwoven layers are subsequently compacted, more precisely ...

Embodiment 2

[0026] Produced from endless threads, as respective spunbonded nonwovens with respective basis weights of approximately 30 g / m 2 of two nonwoven layers. Polyester filaments are used here, for example. The respective spunbond nonwovens are then used at approximately 10 to 20 N / mm 2 A range of low calender line pressures pre-compacts in order to simplify its further processing.

[0027] The two nonwoven layers are then integrated by introducing, in the exemplary case, a stabilizing material made of polyester between the two nonwoven or fiber layers in one process and in the longitudinal direction of the belt. Wire. In this way, the strip-shaped nonwoven carrier is reduced with respect to its elongation (in particular in the longitudinal direction of the strip). In principle, it is also possible in this process to introduce stabilizing threads in the form of a textile between the two nonwoven layers to be combined.

[0028] In any case, the desired nonwoven carrier consistin...

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Abstract

The subject matter of the present invention is an adhesive tape and a manufacturing method for producing it. The adhesive tape is equipped with a tape-shaped nonwoven carrier and with at least one single-sided or double-sided adhesive coating. According to the invention, the nonwoven carrier has a plurality of stabilizing fibres which run continuously in the tape longitudinal direction and are arranged on its surface and / or in its interior.

Description

technical field [0001] The invention relates to an adhesive tape having a nonwoven carrier in the form of a tape and having at least one adhesive coating on one or both sides. Background technique [0002] A wide variety of such adhesive tapes is known, for which reference is made only by way of example to DE 101 21 109 A1. EP 0 942 057 B1 is also relevant in this regard. [0003] Furthermore, adhesive tapes based on sewn nonwoven carriers, such as Maliwatt nonwovens (see DE 44 42 093 C2), are used for bundling cables in automobiles. Such sewn nonwoven carriers for providing adhesive tapes are essentially characterized in that, due to the seams introduced on the surface, recesses and elevations necessarily occur between the seams. This is due to the seams which are introduced into the fibers of the nonwoven and mostly run parallel to each other. [0004] Due to this irregular surface, a relatively large amount of adhesive is necessary for the adhesive coating of the menti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J7/02C09J7/04C09J7/29
CPCC09J7/0296C09J2400/263C09J2203/302C09J7/04C09J7/29C09J7/21
Inventor S·孟德特P·拉姆布什
Owner CERTOPLAST VORWERK & SOHN
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