초록 ▼

A light weight packaging container, similar to a capsule and made by deep-drawing and/or stretching of a multi-layer foil composite, is composed of synthetic material and aluminum. An aluminum layer or foil having a thickness within the range of from one grain to a few grains is provided. At least o

A light weight packaging container, similar to a capsule and made by deep-drawing and/or stretching of a multi-layer foil composite, is composed of synthetic material and aluminum. An aluminum layer or foil having a thickness within the range of from one grain to a few grains is provided. At least one layer of synthetic material is fixed to the aluminum layer or foil. The total thickness of the synthetic layer or layers is substantially greater than that of the aluminum layer or foil. In one embodiment, only one layer of synthetic material is provided. In another embodiment, two layers of synthetic material are provided, one being fixed to one major surface of the aluminum layer or foil and the other being fixed to the other major surface of the aluminum layer or foil.

대표청구항 ▼

A deep-drawn light weight, semi-rigid, dent-resistant, packaging container, made from a laminated sheet, comprising in combination: (a) an aluminum layer having a thickness in the range of from one grain to a few grains; and (b) at least one layer of polymeric plastic material, which is biaxially st

A deep-drawn light weight, semi-rigid, dent-resistant, packaging container, made from a laminated sheet, comprising in combination: (a) an aluminum layer having a thickness in the range of from one grain to a few grains; and (b) at least one layer of polymeric plastic material, which is biaxially stretched before forming the laminated sheet, to increase the yield strength of the polymeric material, and has an elongation before fracture of 15-50%, said polymeric material being selected from a group consisting of polypropylene, polyamide and polyester, and being laminated to said aluminum layer for providing stretchability, strength and stability, the total thickness of said at least one layer of polymeric material being substantially greater than that of said aluminum layer. A deep-drawn light weight, semi-rigid, dent-resistant, packaging container, formed from a laminated sheet having a stretch capability of up to 50% elongation without rupture, said laminated sheet comprising: a first layer of polymeric plastic material selected from the group consisting of polypropylene, polyamide and polyester, which is biaxially stretched before forming the laminated sheet to increase the yield strength of the polymeric material, and which has an elongation before fracture of 15-50%; a second layer of aluminum, which has a thickness in the range of from one grain to a few grains, and which is laminated to said first layer; and a third layer of synthetic material which has a low tendency to return to its state before forming, selected from a group consisting of impact-resistant polystyrene, acrylic butadiene styrene, and polyvinyl chloride, which has a thickness substantially greater than said aluminum layer, and which is laminated to said aluminum layer.