Patent EP0084922A2 successfully refreshed from Google Patents.
EP0084922A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Plastics laminate sheet for making collapsible dispensing containers, collapsible dispensing tube containers and tubular bodies therefor
Assignee: Primerica Inc
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Filing: 1983-01-04
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Granted: —
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Expires: 2003-01-04
Abstract
Abstract A plastic laminate sheet for making collapsible dispensing container tubes and bodies therefor comprises an outer layer (1) of filled plastics material made of polypropylene (or high impact grade polypropylene) or a blend of either with high density polyethylene. The filler is preferably calcium carbonate. The outer filled-plastics layer is coextensively bonded to an inner layer (3) of high density polyethylene to form the laminate sheet. Optionally the laminate includes a layer of an oxygen barrier plastics material which may be interposed as layer (9) between the inner and outer layers (1 and 3) to impart oxygen impermeability to the laminate. The outer layer (1) can have a grooved surface to enhance crease retention or «dead-foldability» of the laminate sheet.
Inventors
- 👤 Christopher J. Farrell
- 👤 Mark A. Williams
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 07:18
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/18; B32B27/20; B32B1/00; B32B1/08; B32B27/06; B32B27/08; B32B3/00; B32B3/26; B32B3/30; B32B7/00; B32B7/04; B32B7/12; B65; B65D; B65D35/00; B65D35/02; B65D35/04; B65D35/08; B32B2264/00; B32B2264/10; B32B2264/104; B32B2307/00; B32B2307/70; B32B2307/724; B32B2307/7242; B32B2307/7244; B32B2439/00
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
89 words
A plastics laminate sheet useful for making collapsible dispensing containers, characterised in that the laminate sheet comprises a first layer (1) of a filled plastics material coextensively bonded to a second plastics layer (3), the filled plastics material being a polymer selected from polypropylene, high impact grade polypropylene and a blend of polypropylene or high impact grade polypropylene with high density polyethylene, in combination with a filler selected from calcium carbonate, talc, mica, glass powder, metal powder and mixtures thereof, the second plastics layer being essentially high density polyethylene.
Claim 2
Dependent Claim
89 words
A plastics laminate sheet useful for making collapsible dispensing containers, characterised in that the laminate sheet comprises a first layer (1) of a filled plastics material coextensively bonded to a second plastics layer (3), the filled plastics material being a polymer selected from polypropylene, high impact grade polypropylene and a blend of polypropylene or high impact grade polypropylene with high density polyethylene, in combination with a filler selected from calcium carbonate, talc, mica, glass powder, metal powder and mixtures thereof, the second plastics layer being essentially high density polyethylene.
Claim 3
Dependent Claim
16 words
A plastics laminate sheet according to claim 1, characterised in that the filler is calcium carbonate.
Claim 4
Dependent Claim
34 words
A plastics laminate sheet according to claim 1 or claim 2, characterised in that the first layer (1) is grooved (at 7) on its surface opposite to the surface contacted by the second layer.
Claim 5
Dependent Claim
61 words
A plastics laminate sheet according to claim 1, 2 or 3, further characterised by an intermediate layer (9) of oxygen-impermeable material between the first and second layers (1,3), by a first adhesive layer (11) for coextensively bonding the first layer to the intermediate layer, and by a second adhesive layer (13) for coextensively bonding the second layer to the intermediate layer.
Claim 6
Dependent Claim
39 words
A plastics laminate sheet according to claim 1 or claim 2, further characterised by an oxygen barrier layer coextensively bonded to the surface of the first layer (1) opposite to the surface thereof contacted by the second layer (3)0
Claim 7
Dependent Claim
39 words
A plastics laminate sheet according to claim 1 or claim 2, further characterised by an oxygen barrier layer coextensively bonded to the surface of the second layer (3) opposite to the surface thereof contacted by the first layer (1).
Claim 8
Dependent Claim
35 words
A plastics laminate according to claim 4, 5 or 6, characterised in that the oxygen barrier layer (9) is selected from polyesters, ethylene-vinyl alcohol copolymers, ethylene-vinyl acetate copolymers, polyacrylonitrile, vinyl chloride-vinylidine chloride copolymers and nylon.
Claim 9
Dependent Claim
94 words
A collapsible dispensing container having a laminated plastics, tubular body and a thermoplastic headpiece attached thereto, characterised in that the tubular body comprises a laminate of an outer layer (1) of a filled plastics material coextensively bonded to an inner thermoplastic layers (3), the filled plastics material comprising a polymer selected from polypropylene, high impact grade polypropylene, and polypropylene or high impact grade polypropylene blended with high density polyethylene, and a filler selected from calcium carbonate, talc, mica, glass powder, metal powder and mixtures thereof, the inner plastic layer (3) being high density polyethylene.
Claim 10
Dependent Claim
94 words
A collapsible dispensing container having a laminated plastics, tubular body and a thermoplastic headpiece attached thereto, characterised in that the tubular body comprises a laminate of an outer layer (1) of a filled plastics material coextensively bonded to an inner thermoplastic layers (3), the filled plastics material comprising a polymer selected from polypropylene, high impact grade polypropylene, and polypropylene or high impact grade polypropylene blended with high density polyethylene, and a filler selected from calcium carbonate, talc, mica, glass powder, metal powder and mixtures thereof, the inner plastic layer (3) being high density polyethylene.
Claim 11
Dependent Claim
89 words
A preformed laminated plastics tubular body for mounting a thermoplastic headpiece thereto, characterised in that the tubular body comprises a laminate of an outer layer (1) of filled plastics material coextensively bonded to an inner thermoplastic layer (3), the filled plastics material comprising a polymer selected from polypropylene, high impact polypropylene and a blend 3 f polypropylene or high impact polypropylene with high density polyethylene, and a filler selected from calcium carbonate, talc, mica, glass powder, metal powder and mixtures thereof, the inner plastics layer being high density polyethylene.
Claim 12
Dependent Claim
89 words
A preformed laminated plastics tubular body for mounting a thermoplastic headpiece thereto, characterised in that the tubular body comprises a laminate of an outer layer (1) of filled plastics material coextensively bonded to an inner thermoplastic layer (3), the filled plastics material comprising a polymer selected from polypropylene, high impact polypropylene and a blend 3 f polypropylene or high impact polypropylene with high density polyethylene, and a filler selected from calcium carbonate, talc, mica, glass powder, metal powder and mixtures thereof, the inner plastics layer being high density polyethylene.
Claim 13
Dependent Claim
60 words
A container or a tubular body therefor according to claim 8 or claim 9, characterised in that the laminate includes an intermediate layer (9) of oxygen barrier material, a first adhesive layer (11) coextensively bonding said outer layer (1) to said intermediate layer, and a second adhesive layer (13) for coextensively bonding said inner layer (3) to the intermediate layer.
Claim 14
Dependent Claim
36 words
ll. A container or tubular body therefor according to claim 10, characterised in that the oxygen barrier layer (9) is selected from polyesters, ethylene-vinyl alcohol copolymers, ethylene-vinyl acetate copolymers, polyacrylonitrile, vinyl chloride-vinylidine chloride copolymers and nylon.
Claim 15
Dependent Claim
38 words
A container or tubular body therefor according to claim 8, 9, 10 or 11, characterised in that the outer layer (1) is grooved (at 7) on its surface opposite to the surface contacted by the inner layer (3).
References Cited (Backward Citations)
No citation records indexed.
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