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Pressure-sensitive adhesive tapes and articles made thereof

A tape, longitudinal side technology, applied in the direction of adhesive products, pressure-sensitive film/sheet, synthetic resin layered products, etc., can solve the problem of not being able to provide enough board edge upturning resistance, and achieve the effect of improving removability

Active Publication Date: 2017-10-20
3M INNOVATIVE PROPERTIES CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In contrast, the disclosed PSA tapes are used with high density foam backings, where these foam tape constructions still do not provide sufficient resistance to board edge uplift, which is very important in flexographic printing applications

Method used

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  • Pressure-sensitive adhesive tapes and articles made thereof
  • Pressure-sensitive adhesive tapes and articles made thereof
  • Pressure-sensitive adhesive tapes and articles made thereof

Examples

Experimental program
Comparison scheme
Effect test

example

[0183] The following examples are intended to illustrate exemplary embodiments within the scope of the present disclosure. Notwithstanding that the numerical ranges and parameters setting forth the broad scope of the disclosure are approximations, the numerical values ​​set forth in the specific examples are reported as precisely as possible. Any numerical value, however, inherently contains certain errors necessarily resulting from the standard deviation found in their respective testing measurements. At the very least, and not as an attempt to limit the application of the doctrine of equivalents to the scope of the claims, each numerical parameter should at least be construed in light of the number of reported significant digits and by applying ordinary rounding techniques.

[0184] All amounts quoted are in parts by weight unless otherwise indicated.

[0185] Material

[0186]

[0187]

[0188] testing method

[0189] Peel Adhesion: New Printed Plates

[019...

example 1

[0211] Example 1 (EX1)

[0212] A second binder precursor slurry was prepared by mixing 98 parts of IOA, 2 parts of AA, and 0.04 parts of I651, and under a nitrogen atmosphere by exposure to A UV radiation source partially polymerized it to provide a slurry with a viscosity of about 3 Pa*s (3000 centipoise) and a monomer conversion of about 8%. Next, 0.10 parts of 2,4-triazine and another 0.15 parts of I651 were added to the slurry and completely dissolved to produce the final coatable binder precursor slurry. The slurry was then knife coated at a coverage rate of 52.3 g / m2 (12.5 grains / 24 in2) onto double-sided siliconized polyethylene-coated polyester prepared as described in Example 1 of EP 1800865 A1 On the embossed side of the release liner. The resulting coating on the release liner was then exposed to ultraviolet radiation on its exposed side using a series of lamps having a spectral output of 300-400 nm with a maximum at 351 nm in a nitrogen-enriched atmosphere , ...

example 2-9

[0218] Example 2-9 (EX2-EX9)

[0219] Examples 2 to 13 were prepared according to the description of Example 1, except that the first binder precursor slurry was prepared by mixing each part of the monomers listed in Table 1 below, and the units of the monomers are parts by weight, based on The total weight of monomers.

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Abstract

The present invention provides pressure sensitive adhesive tapes and articles thereof. The adhesive tape for mounting flexographic printed boards has a foam substrate and two adhesive layers on either side of the substrate, the adhesive layers may contain polymer components obtainable by free-radical polymerization of the following monomers: a) More than 50% by weight of linear or branched acrylates having 2 or more carbon atoms in the alkyl group, b) 22.5-46.5% by weight of linear, cyclic or branched acrylates having 1 to 20 carbon atoms in the alkyl group Branched acrylates, and c) greater than 3.5% by weight to 27.5% by weight of highly polar vinyl-substituted monomers according to the Fox method and based on homopolymers of the monomers in a), b) and c) by modulating DSC The polymer component has a Tg between -22 and -7°C, and according to the Fedors method, the polymer component has a solubility between 9.58 and 9.99 (cal / cm2)1 / 2 parameter.

Description

technical field [0001] The present disclosure relates to pressure sensitive adhesive (PSA) tapes for flexographic printing applications. The present disclosure also relates to tools prepared using these PSA tapes and methods of using these PSA tapes and / or tools to mount and demount printing plates. Background technique [0002] Pressure sensitive adhesives are used in a variety of applications. In some cases, pressure sensitive adhesives are used in the construction of double sided pressure sensitive tapes used in the printing industry. Flexographic printing is an example of such a case. [0003] Pressure sensitive adhesives (PSAs) contemplated for flexographic printing applications include, for example, those based on natural rubber, as described, for example, in EP 760 389 A . However, for the stated end use, pressure-sensitive adhesive tapes comprising polyacrylate-based PSAs are also used. For example, WO 03 / 057497 A describes block copolymer based acrylate PSAs for...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J7/02C09J133/04C09J7/22C09J7/26C09J7/38C09J7/50
CPCC09J2400/243C09J2433/00B41N6/02C09J133/08C08L2203/14C09J7/38C09J7/22C09J7/50C09J7/26Y10T428/249983Y10T428/249985C09J2301/124C09J2301/312C08F220/1808C08F220/1809C08F220/06C09J7/20B32B37/12B41C1/00B32B2266/08B32B2266/0221B32B2266/025B32B5/18B32B27/065B32B27/308B32B27/36B32B38/10B32B38/145B32B38/162B32B2307/72B32B2405/00B41N6/00C09J2475/003
Inventor 斯科特·A·范沃特约翰·S·索卡尔斯基
Owner 3M INNOVATIVE PROPERTIES CO