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Method for making structured adhesive article

An adhesive layer, structured surface technology, used in chemical instruments and methods, film/sheet adhesives, adhesives, etc., can solve problems such as adhesive bonding characteristics and adverse effects of optical characteristics

Active Publication Date: 2018-05-15
3M INNOVATIVE PROPERTIES CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These stresses can cause defects in the adhesive, adversely affecting the bonding and optical properties of the adhesive

Method used

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  • Method for making structured adhesive article
  • Method for making structured adhesive article
  • Method for making structured adhesive article

Examples

Experimental program
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example

[0114] These examples are for illustrative purposes only, and are not intended to limit the scope of the appended claims. All parts, percentages, ratios, etc. in the examples, as well as in the remainder of the specification, are by weight unless otherwise indicated. Solvents and other reagents used were obtained from Sigma-Aldrich Chemical Company; Milwaukee, Wisconsin unless otherwise indicated. The following abbreviations are used: cm = centimeter; in = inch; psi = pounds per square inch; Pa = Pascal. The terms "% by weight", "% by weight" and "wt%" are used interchangeably.

[0115] Acronym

[0116]

example 1

[0118] A sample of Composite Film-1 was placed in a Wabash press in a cardboard with engraved copper / flat chrome / PET / engraved copper / film composite / PET / flat chrome / cardboard configuration such that the liner- 1 is in contact with the surface of the engraved copper plate. The samples were treated under extrusion at 5000 psi (34 MPa) with a platen temperature of 70°C for 3 minutes and then at 15 tons of pressure (207 MPa) for 3 minutes.

[0119] After extrusion, the topography of the outer surface of Liner-1 was determined using a WYKO surface profiler, showing linear grooves approximately 13 microns deep and 294 microns apart. Liner-1 was removed and the topography of Adhesive-1 was determined to contain linear grooves 11 microns deep. Adhesive-1 contacts the glass substrate, Adhesive-1 can slide to some extent upon initial contact, and exhibits outgassing properties (no air bubbles present in the adhesive layer) upon application of pressure. The outer surface of the Membrane...

example 2

[0121] A sample of Composite Film-1 was placed in a Wabash press in a cardboard with engraved copper / flat chrome / PET / engraved copper / film composite / PET / flat chrome / cardboard configuration such that the liner- 1 is in contact with the surface of the engraved copper plate. The samples were treated under extrusion at 5000 psi (34 MPa) with a platen temperature of 100°C for 3 minutes and then at 15 tons of pressure (207 MPa) for 3 minutes.

[0122] After extrusion, the topography of the outside of Liner-1 was determined using a WYKO surface profiler, showing linear grooves approximately 23 microns deep and 294 microns apart. Liner-1 was removed and the topography of Adhesive-1 was determined to contain linear grooves 15 microns deep. Adhesive-1 contacts the glass substrate, Adhesive-1 can slide to some extent upon initial contact, and exhibits outgassing properties (no air bubbles present in the adhesive layer) upon application of pressure. The outer surface of the Membrane-1 la...

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PUM

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Abstract

A method of forming a laminated adhesive article is disclosed comprising providing a multilayer article, an embossing tool having a structured surface, and a supporting surface tool. A multilayer article includes a substrate, an adhesive layer, and a liner or may include only an adhesive layer and a liner. The multilayer article is placed between the structured surface of the imprint tool and the support surface tool. The embossing tool is pressed against the pad and the support surface tool is simultaneously pressed against the substrate by applying pressure or a combination of pressure and heat. Extrusion causes structures on the surface of the imprint tool to deform the liner and adhesive layer, and the support surface tool to modify the surface of the substrate. The deformation of the pad is maintained upon release of the applied pressure. When the liner is removed from the adhesive layer, the structure on the adhesive layer is unstable but does not immediately collapse.

Description

technical field [0001] The present disclosure relates to structured laminating adhesive articles, and methods for making structured laminating adhesive articles, including microstructured laminating adhesive articles. Background technique [0002] Microstructured adhesive articles are prepared by applying a flowable pressure sensitive adhesive to the surface of a microstructured release liner or the surface of a microstructured molding tool. This process results in the creation of an adhesive with a microstructured surface. When the resulting article is dry-laminated under pressure to a substrate such as glass or a polymer film, the microstructured features created in the adhesive surface allow air to escape from the bonded interface, thereby minimizing the formation of air bubbles and pores or prevent its formation. [0003] During lamination, the microstructured features can flatten and wet the substrate surface. Typically, the applied pressure is used to collapse the s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B3/30C09J7/29
CPCB32B7/12B32B3/30B32B2457/00C09J2203/322C09J7/403C09J2433/00C09J2423/045C09J2431/006C09J2423/046C09J2301/204C09J2301/414C09J2301/302B32B37/0053B32B37/06B32B37/10B32B37/12B32B38/06
Inventor 弗兰克·T·谢尔迈克尔·本顿·弗里
Owner 3M INNOVATIVE PROPERTIES CO
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