METHOD FOR PRODUCING PRESSURE-SENSITIVE ADHESIVE SHEET HAVING ULTRAVIOLET-RAY CURING-TYPE ACRYLIC PRESSURE-SENSITIVE ADHESIVE LAYER

摘要

Provided is a method for producing a pressure-sensitive adhesive sheet having an ultraviolet-ray curing-type acrylic pressure-sensitive adhesive layer that has a high conversion per unit amount of light, is excellent in productivity, and is also excellent in balance between pressure-sensitive adhesive performances. The method includes: a pressure-sensitive adhesive layer forming step in which the composition is irradiated with and cured by ultraviolet rays to form a pressure-sensitive adhesive layer; wherein an ultraviolet lamp that radiates the ultraviolet rays in the pressure-sensitive adhesive layer forming step is an LED lamp; the ultraviolet rays are radiated intermittently; and the time of bright periods when the ultraviolet rays are radiated is from 1 second to 30 seconds, and the time of dark periods when the rays are not radiated is from 0.1 timed to 20 times the time of the bright periods.

主权项

1. A method for producing a pressure-sensitive adhesive sheet, the method comprising:
an applying step in which an ultraviolet-ray curing-type acrylic pressure-sensitive adhesive composition containing at least a monomer-component matter that contains an alkyl (meth)acrylate, and/or a partial polymer made from the monomer-component matter, and a photopolymerization initiator, is applied onto a substrate; a pressure-sensitive adhesive layer forming step in which the pressure-sensitive adhesive composition is irradiated with and cured by ultraviolet rays to form a pressure-sensitive adhesive layer; wherein an ultraviolet lamp that radiates the ultraviolet rays in the pressure-sensitive adhesive layer forming step is an LED lamp; the ultraviolet rays are radiated intermittently; and the time of bright periods when the ultraviolet rays are radiated is from 1 second to 30 seconds, and the time of dark periods when the rays are not radiated is from 0.1 timed to 20 times the time of the bright periods.