Method for preparing microstructured laminating adhesive articles
A microstructured, adhesive technology that can be used in film/sheet adhesives, adhesive products, chemical instruments and methods to solve problems such as adverse effects on optical properties
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example
[0037] 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.
[0038] Acronym
[0039] initials or business name describe Adhesive Laminate-1
3M Optically Clear Adhesive 8141, adhesive thickness 25 microns (1 density
ear), between 2 release liners, use as received. Available from 3M Company
(St. Paul, MN) was obtained commercially. Adhesive Laminate-2
3M Optically Clear Adhesive 8142, adhesive thickness 51 microns (2 densities
ear), between 2 release liners and used as received. Available from 3M Company
(St. Paul, MN) was obtained commercially. Adhesive Laminate-3
3M Paint Protection Film...
example 1
[0052] For Example 1, a sample of Adhesive Laminate-2 was taken, one liner was removed and Liner-2 was laminated to the PSA using a laminator. Liner-2 was removed to determine if structures had been imprinted into the PSA-1 surface. The imprinted surface was placed in contact with the glass plate and pressure was applied by simply rubbing a finger against one half of the sample while leaving the other half untouched. The rubbed portion appeared to be completely wet when observed by eye.
example 2
[0054] The same procedure was used as described for Example 1 except that Adhesive Laminate-2 was used. Tape samples were prepared from samples of Adhesive Laminate-1 by removing one liner; laminating to 127 micron (5 mil) polyethylene terephthalate film; and removing Another liner was removed and Liner-2 was laminated to the resulting construction. The 180° peel adhesion was measured as described in the test method above, either immediately after adhesion to the glass plate or after remaining on the glass plate for 24 hours. The results are shown in Table 1. A rebound test was performed on the strip sample. The results are shown in Table 2 and graphically shown in Figure 1 .
[0055] Table 1
[0056] example Initial value of 180° peel adhesion
(N / dm) Maintain 180° peel adhesion after 24 hours
(N / dm) C1 60 60 2 48 62
[0057] Table 2
[0058] elapsed time
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