Heat-sensitive label
AssigneeYupo Corporation
InventorsMasahiko Ueno, Takuya Ikarashi
Life of this patent
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Abstract
A heat-sensitive label that can achieve both sufficient adhesive strength and high recyclability is provided. A heat-sensitive label comprising a substrate layer and a heat sealing layer (A) on the substrate layer, wherein the heat sealing layer (A) comprises a heat sealing resin and a carboxylic anhydride-modified polyolefin resin (h); and a product MCh of an acid value M (mgKOH/g) of the carboxylic anhydride-modified polyolefin resin (h) and a content Ch (% by mass) of the carboxylic anhydride-modified polyolefin resin (h) in the heat sealing layer (A) is 1.5 to 6.0.
Claims18
A heat-sensitive label comprising a substrate layer and a heat sealing layer (A) on the substrate layer, wherein
- the heat sealing layer (A) comprises a heat sealing resin and a carboxylic anhydride-modified polyolefin resin (h);
- wherein the heat sealing layer comprises an olefin-based resin;
- and
- a product MCh of an acid value M (mgKOH/g) of the carboxylic anhydride-modified polyolefin resin (h) and a content Ch (% by mass) of the carboxylic anhydride-modified polyolefin resin (h) in the heat sealing layer (A) is 150 to 600.
A heat-sensitive label comprising a substrate layer and a heat sealing layer (B) on the substrate layer, wherein
- the heat sealing layer (B) comprises a layer (B1) constituting an outermost surface of the heat sealing layer (B), and a layer (B2) provided on a side closer to the substrate layer than the layer (B1);
- the layer (B2) comprises a heat sealing resin and does not comprise a carboxylic anhydride-modified polyolefin resin;
- the layer (B1) comprises a heat sealing resin and a carboxylic anhydride-modified polyolefin resin (s);
- a product MCs of an acid value M (mgKOH/g) of the carboxylic anhydride-modified polyolefin resin (s) and a content Cs (% by mass) of the carboxylic anhydride-modified polyolefin resin (s) in the layer (B1) is 25000 to 90000;
- and
- the heat sealing resins included in the layer (B1) and the layer (B2) are the same or different.
Dependencies are inferred from the claim text.