초록 ▼

An active agent-containing laminated material and the method for producing the same, in which an impermeable film is temporarily adhered to at least one side surface of an active agent-containing film and impermeable film can be peeled off and readhered repeatedly. The laminated material is prepared

An active agent-containing laminated material and the method for producing the same, in which an impermeable film is temporarily adhered to at least one side surface of an active agent-containing film and impermeable film can be peeled off and readhered repeatedly. The laminated material is prepared by directly laminating a molten web of active agent-containing polyolefin composition with an impermeable film at and pressing them together, said active agent-containing polyolefin composition comprising: (A) 10 to 100 parts by weigh to carboxyl group-containing ethylene based copolymer of at least 7% by weight in the content of carboxyl group-containing monomer; (B) 90 parts by weight or less of low density polyethylene having a melt index of at least 30 g/10 min.; and (C) at least 0.005 parts by weight of an active agent or agents relative to 100 parts by weight of said polymers (A) plus (B).

대표청구항 ▼

An active agent-containing laminated material which is prepared by (1) laminating the polyolefin side of a first impermeable film, said first impermeable film having been previously laminated with a polyolefin film, to one side of a molten web of active agent-containing polyolefin composition, (2) l

An active agent-containing laminated material which is prepared by (1) laminating the polyolefin side of a first impermeable film, said first impermeable film having been previously laminated with a polyolefin film, to one side of a molten web of active agent-containing polyolefin composition, (2) laminating a second impermeable film, having no polyolefin film laminated thereto, to the other side of said molten web of active agent-containing polyolefin composition, said second impermeable film being capable of being repeatedly peeled off and readhered to the web of active agent-containing polyolefin composition of said laminated material, and (3) pressing the laminated films together, said active agent-containing polyolefin composition comprising: (a) 10 to 100 parts by weight of carboxyl group-containing ethylene based copolymer of at least 7% by weight in the content of carboxyl group-containing monomer; (b) 90 parts by weight or less of low density polyethylene having a melt index of at least 30 g/10 min.; and (c) at least 0.005 parts by weight of an active agent or agents relative to 100 parts by weight of said polymers (a) plus (b).