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US 11,920,061 B2Granted
Adhesive sheet
AssigneeDenka Company Limited
InventorManabu Miura
Life of this patent
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AssigneeDenka Company Limited
InventorManabu Miura
Estimating the term…
An adhesive sheet in which the adhesive strength of an adhesive layer to other adherends is low, adhesive layers can be firmly bonded to each other, the adhesive layers will not be destroyed even if the adhesive layers are peeled after having once been bonded, and sufficient bonding strength is obtained even if the adhesive layers are re-bonded. An adhesive sheet in which an intermediate layer containing methyl methacrylate-grafted natural rubber is provided on a substrate containing a vinyl chloride resin and a plasticizer, and an adhesive layer including an adhesive containing the plasticizer and a rubber component containing natural rubber and methyl methacrylate-grafted natural rubber is provided on the intermediate layer, wherein a degree of swelling of the rubber component with respect to the plasticizer is by a factor of 1.5 to 4.5.
An adhesive sheet in which an intermediate layer containing methyl methacrylate-grafted natural rubber (B) is provided on a substrate containing a vinyl chloride resin and a plasticizer (A), and an adhesive layer comprising an adhesive containing the plasticizer (A) and a rubber component (C) containing natural rubber (C1) and methyl methacrylate-grafted natural rubber (C2) is provided on the intermediate layer, wherein a degree of swelling of the rubber component (C) with respect to the plasticizer (A) is by a factor of 1.5 to 4.5.
Dependencies are inferred from the claim text.