Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Compressible uv-activatable or thermally activatable (semi-) structural adhesive film that changes color after activation and after curing

A color changing, adhesive film technology, applied in the direction of heat activated films/sheets, non-polymer adhesive additives, adhesive types, etc., which can solve the problem of no longer ensuring adhesion, lack of adhesion of second joint parts power and other issues

Pending Publication Date: 2022-02-22
LOHMANN GMBH & CO KG
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this case, due to the gradual cross-linking, the establishment of adhesive force to the joint object is no longer ensured, so that lack of adhesive force on the second joint member is often caused

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Compressible uv-activatable or thermally activatable (semi-) structural adhesive film that changes color after activation and after curing
  • Compressible uv-activatable or thermally activatable (semi-) structural adhesive film that changes color after activation and after curing
  • Compressible uv-activatable or thermally activatable (semi-) structural adhesive film that changes color after activation and after curing

Examples

Experimental program
Comparison scheme
Effect test

example

[0120] Examples of compositions relevant to the selection of expandable fillers are summarized in Table 3, where the quantity statements represent parts by weight. K1 to K3 are formulations according to the invention with expandable fillers. V1 is an adhesive transfer film without the addition of expandable fillers:

[0121] Example: K1 K2 K3 V1 Phenoxy resin PKHH-25-B 40.0 40.0 40.0 40.0 D.E.R 331 17.5 17.5 17.5 17.5 D.E.R.736 13.4 13.4 13.4 13.4 Struktol Polycavit 3550 25.0 25.0 25.0 25.0 Araldite DY 3601 4.1 4.1 4.1 4.1 Omnicat 432 1.5 1.5 1.5 1.5 Dynadylan GLYEO 0.7 0.7 0.7 0.7 Microsphere F-35D 6.3 - - - Microsphere F-36D - 6.3 - - Expancell 920DU 40 - - 6.3 - methyl ethyl ketone 55.2 55.2 55.2 55.2

[0122] table 3

[0123] In Table 4 the results of the tensile shear tests, tensile and peel tests and the associated expansion and compression ar...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to an adhesive film that can be wound and punched, comprising an epoxy-based adhesive compound that can be activated by UV radiation or thermally and an expandable filler admixed to the adhesive compound to produce an adhesive film that is compressible when not yet cured.

Description

technical field [0001] The invention relates to a curable, rollable and punchable adhesive film which changes color (Farbumschlag) after activation, which is activatable by ultraviolet radiation (UV) or heat, said adhesive film For structural bonding, the adhesive film is compressible and self-adhesive in the unactivated state (haftklebend). In this context, references to UV activation in the following always likewise also include possible thermal activation. Background technique [0002] The terms used in the following embodiments should be understood as follows: [0003] In the following, "adhesive film" means any form of areal adhesive system, i.e. not only adhesive films, but also adhesive tapes, adhesive films, adhesive strips, adhesive sheets or adhesive punches. cut pieces. [0004] “Self-adhesive” refers to an adhesive connection in which two joining objects are connected to one another with an adhesive layer located in between and under pressure. This connection...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C09J7/10C09J7/38C09J7/35C09J163/00C09J171/00C09J11/06
CPCC09J7/10C09J7/38C09J7/35C09J163/00C09J11/06C09J2301/416C09J2301/408C09J2301/412C09J2463/00C09J2301/304C08L71/00C08K5/0041C08K5/23C08L63/00C09J2301/302C08G2650/60C08G59/68C08G59/226
Inventor 鲁本·弗里德兰维多利亚·里特尔约翰内斯·斯塔尔
Owner LOHMANN GMBH & CO KG
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com