Packaging films
AssigneeAicello Chemical Co., Ltd.
InventorRyochi Ohtsuka
Life of this patent
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Abstract
A film suitable for spiral packaging is highly sealable and provides a strong self-adhesiveness of the front and reverse sides of superposed films upon spiral packaging. The film includes two layers comprising (A) a layer including a resin composition containing at least one kind of adhesives-rendering resin having a resin density of 0.950 g/cm3, such as rosin resins, at a concentration of 0.002 to 12.0% by weight in a polyolefin resin having a resin density of more than 0.910 g/cm3, and (B) another layer including a resin composition containing the abovementioned adhesiveness-rendering resin at a concentration of 0.05 to 25.0% by weight and a plasticizing oil at a concentration of 0.01 to 8.0% by weight in a low density linear polyethylene resin having a resin density of 0.860 to 0.920 g/cm3.
Claims13
A laminated film composite suitable for spiral packaging, which comprises at least two layers containing:
- (A) mixed-resin layer A comprising at least (i) a polyolefin resin having a resin density of more than 0.910 g/cm3, and
- (B) mixed-resin layer B comprising at least (I) a linear low density polyethylene resin having a resin density of 0.860 to 0.920 g/cm3,
- one of mixed-resin layer A or B further comprising (ii) a resin composition containing at least one kind of adhesiveness-rendering resin having a resin density of more than 0.950 g/cm3 selected from rosin resins, terpene resins or petroleum resins at a concentration of 0.002 to 12.0% by weight;
- the other layer further comprising (iii) a resin composition containing at least one kind of resin selected from the abovementioned adhesiveness-rendering resins at a concentration of 0.05 to 25.0% by weight and (iv) at least one kind of plasticizing oil selected from mineral oils, polybutene, polyisobutylene, liquid polyacrylates or lanolin at a concentration of 0.01 to 8.0% by weight.
Dependencies are inferred from the claim text.