Multiple layer container
AssigneeThe Procter & Gamble Company
InventorsMario Albanesi, Marco Ciofani
Life of this patent
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Abstract
A multilayer material for containing liquid products, specifically for liquid products comprising a hypochlorite bleach is provided. This multi-layer material comprises an inner layer, a layer of adhesive and an outer layer. Said multi-layer material further comprises a bleach resistant adhesive which prevents the degradation of the multi-layer material when exposed to the aggressive action of the hypochlorite bleach or components of said bleach.
Claims4
A flexible multiple layer container comprising:
- a flexible multilayer material having an inner layer and an outer layer, and a
- bleach-resistant adhesive joining said inner and outer layers, wherein said inner layer is made of a heat sealable polyolefin and said outer layer is made of a printable plastic wherein said adhesive comprises a mixture of polyurethane and polyester and an isocyanate co-reactant and is employed at a level of at least 2.5 g/m2;
- and
- a hypochlorite bleach solution stored within the container, wherein said inner layer is disposed adjacent said hypochlorite bleach solution and wherein said adhesive resists the aggressive action of said hypochlorite bleach solution or components of said hypochlorite bleach solution.
A method of making a flexible multiple layer material for containers used for storing a hypochlorite bleach, comprising the steps of:
- providing a first layer of material, wherein said first layer is the outer layer of said flexible multiple layer material and wherein said outer layer is made of a printable plastic;
- providing a second layer of material, wherein said second layer is the inner layer of said flexible multiple layer material and wherein said inner layer is made of a heat sealable polyolefin;
- and
- joining said first layer of material to said second layer of material with a bleach resistant adhesive, wherein said adhesive comprises a mixture of polyurethane and polyester and an isocyanate co-reactant and is employed at a level of at least 2.5 g/m2.
Dependencies are inferred from the claim text.