Press-through pack package
AssigneeAsahi Kasei Chemicals Corporation
InventorsMasahiro Yagi, Hiroaki Kimura, Yutaka Matsuki, Hideki Hayashi
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Abstract
The press-through pack package of the invention has a covering material composed of a stretched film with at least one layer comprising a thermoplastic resin and an inorganic filler at 5 parts by weight with respect to 100 parts by weight of the thermoplastic resin.
Claims9
A press-through pack (PTP) package, comprising:
- a base material;
- and
- a covering material,
- wherein the covering material is composed of a stretched film including at least one layer which comprises a styrene-based resin having a styrene-based monomer component of 70-97 wt % and an ester component of 2-20 wt %, and an inorganic filler at less than 5 parts by weight with respect to 100 parts by weight of the styrene-based resin, and
- wherein the styrene-based resin is at least one terpolymer resin selected from the group consisting of a terpolymer resin consisting of monomer components of styrene-acrylic acid copolymer resins and an ester component, a terpolymer resin consisting of monomer components of styrene-methacrylic acid copolymer resins and an ester component, and a terpolymer resin consisting of monomer components of styrene-maleic anhydride copolymer resins and an ester component.
A press-through pack (PTP) package with a covering material composed of a stretched film including at least one layer which comprises a styrene-based resin having a styrene-based monomer component of 70-97 wt % and an ester component of 2-20 wt %, and an inorganic filler at less than 5 parts by weight with respect to 100 parts by weight of the styrene-based resin,
- wherein the styrene-based resin is at least one terpolymer resin selected from the group consisting of a terpolymer resin consisting of monomer components of styrene-acrylic acid copolymer resins and an ester component, a terpolymer resin consisting of monomer components of styrene-methacrylic acid copolymer resins and an ester component, and a terpolymer resin consisting of monomer components of styrene-maleic anhydride copolymer resins and an ester component, and
- wherein the stretched film has a piercing strength of 1-5N as measured by a piercing strength test of JIS Z1707.
A press-through pack (PTP) package, comprising:
- a base material;
- and
- a covering material,
- wherein the covering material is composed of a stretched film including at least one layer which comprises a styrene-based resin having a styrene-based monomer component of 70-97 wt % and an ester component of 2-20 wt % and an inorganic filler at less than 5 parts by weight with respect to 100 parts by weight of the styrene-based resin,
- wherein the styrene-based resin is at least one terpolymer resin selected from the group consisting of a terpolymer resin consisting of monomer components of styrene-acrylic acid copolymer resins and an ester component, a terpolymer resin consisting of monomer components of styrene-methacrylic acid copolymer resins and an ester component, and a terpolymer resin consisting of monomer components of styrene-maleic anhydride copolymer resins and an ester component,
- wherein the stretched film has a value of 0.2-5.4 MPa for the peak value of the orientation release stress, measured at a temperature 20° C. higher than the Vicat softening temperature of the styrene-based resin, in either the MD or the TD of the film, and
- wherein the stretched film has a piercing strength of 1-5 N when measured with a piercing strength measuring jig having a 1.0 mm piercing tip spherical diameter.
A press-through pack (PTP) package with a covering material composed of a stretched film including at least one layer which comprises a styrene-based resin having a styrene-based monomer component of 70-97 wt % and an ester component of 2-20 wt %, and an inorganic filler at less than 5 parts by weight with respect to 100 parts by weight of the styrene-based resin,
- wherein the styrene-based resin is at least one terpolymer resin selected from the group consisting of a terpolymer resin consisting of monomer components of styrene-acrylic acid copolymer resins and an ester component, a terpolymer resin consisting of monomer components of styrene-methacrylic acid copolymer resins and an ester component, and a terpolymer resin consisting of monomer components of styrene-maleic anhydride copolymer resins and an ester component, and
- wherein the stretched film has a piercing strength of 1-5 N when measured with a piercing strength measuring jig having a 1.0 mm piercing tip spherical diameter.
Dependencies are inferred from the claim text.