Foam adhesive tape and preparation method thereof

A technology of cotton tape and tape, applied in the direction of adhesives, adhesive types, film/sheet adhesives, etc., can solve the problems that are not suitable for the automotive field, achieve excellent wettability, high initial adhesion, and avoid The effect of atomization

Active Publication Date: 2015-02-25
SHANGHAI 3N CHEM
View PDF5 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, most of the foam tapes on the market are mainly made of EVA, PE, CR and other materials, which are not suitable for use in the automotive field with higher standards.

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
  • Foam adhesive tape and preparation method thereof
  • Foam adhesive tape and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0042] The preparation method of the foam tape provided by the present invention includes scraping a foaming layer on the hot melt layer, then scraping a pressure-sensitive adhesive layer, and then coating a protective layer. Or it includes scraping a foaming layer on the hot melt adhesive, scraping a pressure-sensitive adhesive layer on the protective layer, and then bonding the two parts together. Taking the foam tape with the first transition layer and the second transition layer as an example, it specifically includes the following steps:

[0043] Provide a hot melt layer, and scrape or roll coat the first transition layer on the hot melt layer;

[0044] Then a foam layer is scraped on the first transition layer, and then the second transition layer is scraped or rolled; the foam layer is preferably foamed by a foaming machine, and the foam ratio of the foam is 180% -200%;

[0045] Provide a protective layer, and scrape a pressure-sensitive adhesive layer on the protective laye...

Embodiment 1

[0049] figure 2 It is a flow chart of the preparation process of the foam tape in the embodiment of the present invention.

[0050] See figure 2 The preparation method of the foam tape provided by the present invention is as follows:

[0051] Step S1, the TPV film 1 is subjected to polyurethane affinity treatment, the TPV film 1 is subjected to corona treatment with a voltage of 300V; the one-component polyurethane glue produced by the applicant is coated on the TPV with a coating amount of 100 g / m2 On the film, the one-component polyurethane glue is prepared by referring to the method disclosed in the invention patent filed by the applicant with a patent number of 201110381253.4. The coated one-component polyurethane glue is the adhesive layer 2; Drying at a temperature of ℃, the drying time is 8 minutes.

[0052] Step S2: Add 10%-30% of the anti-hydrolysis component and 1%-2% of the foam regulator to the waterborne polyurethane emulsion to form a polyurethane mixture; mix the ...

Embodiment 2

[0058] Step S1, the TPV film 1 is subjected to polyurethane affinity treatment, and the TPV film 1 is corona treated with a voltage of 500V; the one-component polyurethane glue produced by the applicant is coated on the TPV with a coating amount of 200 g / m2 On the film, the one-component polyurethane glue is prepared by referring to the method disclosed in the invention patent filed by the applicant with a patent number of 201110381253.4. The coated one-component polyurethane glue is the adhesive layer 2; Drying at a temperature of -120℃, the drying time is 8 minutes.

[0059] Step S2: Add 10%-30% of the anti-hydrolysis component and 1%-2% of the foam regulator to the waterborne polyurethane emulsion to form a polyurethane mixture; mix the hydrolysis-resistant component, foam regulator, and color paste in At the same time, stir with a mixer at low speed, and adjust the solution to a predetermined viscosity with a viscosity modifier.

[0060] In step S3, the PE film is released in ...

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

PropertyMeasurementUnit
elongation at breakaaaaaaaaaa
Login to view more

Abstract

The invention discloses a production method of a foam tape. The foam tape comprises a TPV (Thermoplastic Vulcanizate) film, a bonding layer, a foam layer, a pressure-sensitive adhesive layer and a PE (Poly Ethylene) film. The production method comprises the following steps: a) performing polyurethane affinity treatment on the TPV film, and coating the surface of the TPV film with a single-component polyurethane adhesive to obtain the bonding layer; b) sequentially adding 10-30% of anti-hydrolysis component and 1-2% of foam regulation agent into waterborne polyurethane emulsion to form a polyurethane mixed liquid; c) performing polyurethane release treatment on the PE film; d) under a temperature condition of 100-120 DEG C, foaming the polyurethane mixed liquid to form the foam layer on the TPV film; e) coating the foam layer with the pressure-sensitive adhesive so that the PE film and the polyurethane foam are bonded. By adopting the method disclosed by the invention, the produced waterborne polyurethane foam tape has good rebound resilience, high elongation, high strength and long anti-aging time, and is environment-friendly.

Description

Technical field [0001] The invention relates to a sealing and bonding material and a preparation method thereof, in particular to a foam tape and a preparation method thereof. Background technique [0002] The foam tape adopts an advanced fully automatic continuous coating line, using PU, PE, EVA, XPE, EPDM, rubber, needle felt, hot melt felt and other foam as the base material to coat various The high-quality self-adhesive is matched with various high-quality auxiliary materials, and the soft, heat-insulating, heat-preserving and sealing adhesive tape is compounded by a special process; the adhesive tape is divided into two types of materials: closed and open; widely used in automobiles , Air conditioning and refrigeration and interior decoration of ships; air duct interfaces and dampers of automobile air conditioners and civil air conditioners; cement joints of urban buildings, sealing and heat insulation of doors and windows, etc.; it has the characteristics of firm adhesion, ...

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
Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/02C09J175/04
Inventor 王锋顾真贵
Owner SHANGHAI 3N CHEM
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap