Method of producing pressure-sensitive adhesive sheet

Details Method of producing pressure-sensitive adhesive sheet Method of producing pressure-sensitive adhesive sheet

2011-06-28

2011-06-28

Johnson, Christina (Department: 1742)

Plastic and nonmetallic article shaping or treating: processes

Laser ablative shaping or piercing

C264S482000, C264S171100, C428S131000, C428S138000, C428S040100

Reexamination Certificate

active

07968039

ABSTRACT:
To produce a pressure-sensitive adhesive sheet according to which air entrapment and blistering can be prevented or eliminated through through-holes, and yet the through-holes are not readily visible at a substrate surface, a pressure-sensitive adhesive surface of a pressure-sensitive adhesive layer12in a laminate comprising a substrate11and the pressure-sensitive adhesive layer12is irradiated with a CO2laser having a pulse width of from 1 to 140 μsec, a pulse energy at each processing point of from 0.01 to 3.0 mJ, and a beam spot diameter at each processing point of from 30 to 160 μm, so as to form through-holes2having a diameter at the surface of the substrate11of from 0.1 to 42 μm at a hole density of from 30 to 50,000 per 100 cm2.

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