Absorbing layer for blister package, laminate comprising same, and blister package using said laminate
AssigneeKyodo Printing Co., Ltd.
InventorsMasayuki Hosoi, Kazumi Arai, Midori Kato, Makoto Kato
Life of this patent
Estimating the term…
Abstract
The purpose of the present invention is to provide an absorbent layer for blister packs, which imparts sufficient formability and is free from forming failure even if a pocket part is formed to a certain depth. An absorbent layer for blister packs, which sequentially comprises, in the following order, an outer skin layer, an intermediate layer containing an inorganic absorbent and a binder resin, and an inner skin layer containing 5-80% by mass of a metallocene polypropylene and 95-20% by mass of a non-metallocene polypropylene.
Claims13
An absorbing layer for a blister package, comprising the following in the order indicated:
- an outer skin layer;
- an intermediate layer comprising an inorganic absorbent and a binder resin;
- and,
- an inner skin layer comprising 5% by mass to 80% by mass of a metallocene-based random polypropylene and 95% by mass to 20% by mass of a non-metallocene-based random polypropylene.
A blister package comprising a laminate for a blister package and a cover;
- wherein, the laminate and the cover are at least partially adhered, a pocket is formed in the laminate, and contents are able to be contained between the laminate and the cover;
- and,
- the laminate comprises the layers indicated below in that order:
- an substrate layer comprising a polyamide;
- an aluminum layer;
- an outer skin layer comprising a mixture of a low-density polyethylene and a metallocene-based random polypropylene;
- an intermediate layer comprising a zeolite and a binder resin containing a low-density polyethylene and a metallocene-based random polypropylene;
- and,
- an inner skin layer comprising 50% by mass to 75% by mass of a metallocene-based polypropylene and 50% by mass to 25% by mass of a non-metallocene-based random polypropylene;
- wherein,
- the cover comprises a polypropylene-based resin layer that contacts the inner skin layer and another aluminum layer in addition to the aluminum layer,
- the arithmetic surface roughness Ra of the inner skin layer on the opposite side from the intermediate layer is 0.63 μm or more, and
- the interlayer bond strength between the inner skin layer and the intermediate layer is 4.0 N/mm2 or more.
Dependencies are inferred from the claim text.