Pressure-sensitive adhesive sheet for covering
AssigneesSumitomo Electric Industries, Ltd., Sumitomo Electric Fine Polymer, Inc.
InventorsSatoshi Yamasaki, Shinya Nishikawa, Yasutaka Emoto, Kazuto Shiina
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Abstract
A pressure-sensitive adhesive sheet for covering according to an embodiment of the present invention includes a non-crosslinked rubber component having a maximum peak of the molecular weight distribution in the range of 50,000 to 3,000,000, an oil component having a maximum peak of the molecular weight distribution in the range of 1,000 to 20,000, and carbon black. The content of the non-crosslinked rubber component is 25% to 65% by mass, the content of the oil component is 35% to 75% by mass, and the content of the carbon black relative to 100 parts by mass of the total of the non-crosslinked rubber component and the oil component is 1 to 40 parts by mass.
Claims6
A pressure-sensitive adhesive sheet for covering comprising:
- a non-crosslinked rubber component having a maximum peak of the molecular weight distribution in the range of 50,000 to 3,000,000;
- an oil component having a maximum peak of the molecular weight distribution in the range of 1,000 to 20,000;
- and
- carbon black,
- wherein the content of the non-crosslinked rubber component is 25% to 50% by mass,
- the content of the oil component is 35% to 75% by mass,
- the content of the carbon black relative to 100 parts by mass of the total of the non-crosslinked rubber component and the oil component is 1 to 40 parts by mass,
- the non-crosslinked rubber component is selected from butyl rubber or polyisobutylene rubber, and
- the oil component is polybutene.
Dependencies are inferred from the claim text.