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Adhesive Tapes and Their Uses

A tape and adhesive technology, applied in the direction of adhesives, natural rubber adhesives, films/sheets without carriers, etc., can solve problems such as use

Active Publication Date: 2021-03-30
TESA SE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However at higher temperatures, e.g. above 100°C, the styrene domains of the block copolymer melt, making such adhesives unusable at higher temperatures

Method used

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  • Adhesive Tapes and Their Uses
  • Adhesive Tapes and Their Uses
  • Adhesive Tapes and Their Uses

Examples

Experimental program
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Embodiment Construction

[0019] Non-polar surfaces occur in materials with low surface energy, for example in polyethylene (PE), polypropylene (PP) or polyethylene terephthalate (PET). The surface energy is considered low when the surface energy is 50 mN / m or lower, especially less than 40 mN / m. If a material with an apolar surface is mentioned within the scope of the present description, it means a correspondingly low surface energy of 50 mN / m or less, especially less than 40 mN / m, even more preferably 35 mN / m or less those materials. In this specification, the values ​​of surface energy refer to determinations according to the methods specified in the section "General determination methods".

[0020] Natural rubber, as the name implies, is an elastic polymer (cis-1,4-polyisoprene) obtainable from natural products, derived from plant products such as in particular latex (Latex).

[0021] Natural rubber can be processed into the basic raw material for adhesives, so-called natural rubber adhesives. ...

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PUM

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Abstract

The invention relates to an adhesive tape for high-speed rewinding of flat web materials, in particular flat web materials with an apolar surface, comprising at least an upper self-adhesive layer, an inner tape area suitable as a planar predetermined breaking point and a A lower self-adhesive on the underside of the inner tape region, wherein a natural rubber adhesive is used as self-adhesive for at least the upper self-adhesive layer; Method for high-speed roll change of flat web material wound into rolls having a non-polar surface.

Description

technical field [0001] The invention relates to an adhesive tape for high-speed reel change (splicing) of non-polar flat web material wound into a roll (wound on a roll) according to the features of the preambles of the independent claims and to an adhesive tape for winding into a roll Method for high-speed roll changing of non-polar flat web materials. Background technique [0002] In the processing of flat web materials (paper, film, nonwovens, etc.), a high-speed roll change is a process in which an old, almost unwound (exhausted) roll is replaced by a new roll without stopping the machine at high speed for this purpose common method. In such high-speed roll changes, self-adhesive tapes (also called pressure-sensitive tapes) are often used to bond the end (Ende) of the old web to the beginning (Anfang) of the new web. [0003] The implementation of high speed lap change (also called "dynamic lap change") is carried out in the film and nonwoven processing industry for ma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J107/00C09J145/00C09J11/08C09J7/10C09J7/30C09J5/00C09J7/20C09J7/21C09J7/38
CPCC09J5/00C09J7/00C09J11/08C09J107/00C08L2205/03C09J2301/21C08L45/00C08L47/00C08L91/06C08L23/20C09J7/20C09J7/38C09J7/383C09J7/21B65H19/102B65H2301/4607C09J2203/342B65H19/181C09J2301/124C09J2301/408B65H19/1826B65H2301/4621B65H2301/46312C09J2407/00
Inventor T.布勒姆克N.泽沃纳蒂斯K.戈茨J.施瓦茨巴赫
Owner TESA SE