Patent US5324467A successfully refreshed from Google Patents.
US5324467A
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US
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Process for preparation of oriented multilayer laminate film
Assignee: Applied Extrusion Technologies Inc
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Filing: 1992-11-09
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Granted: 1994-06-28
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Expires: 2012-11-09
Abstract
Abstract A process for the preparation of an oriented multilayer laminate film having at least three layers, said method including: (a) extruding in a molten state (i) polypropylene selected from a homopolymer or a copolymer of propylene wherein said copolymer comprises an alkene monomer having 2 or 4-6 carbons; (ii) adhesive; and (iii) co-polyester of a polyesterification reaction product where the reactants are at least one glycol and at least one dibasic acid with the total reactants being at least three of the glycols and dibasic acids, (b) laminating (i), (ii) and (iii) together in the molten state to form the film; (c) cooling the film; (d) drawing the film in a temperature range that allows orienting without breaking; and (e) heat setting the oriented film.
Inventors
- 👤 II Harry S. Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:07
CPC Classifications
B; B29; B29C; B29C55/00; B29C55/02; B29C55/023; B32; B32B; B32B27/00; B32B27/32; B29C55/026; B32B15/00; B32B15/04; B32B15/08; B32B15/09; B32B27/06; B32B27/08; B32B27/18; B32B27/20; B32B27/30; B32B27/304; B32B27/36; B32B38/00; B32B38/0008; B32B7/00; B32B7/04; B32B7/12; B32B38/0012; B32B2038/0028; B32B2307/00; B32B2307/50; B32B2307/514; B32B2310/00; B32B2310/14; B32B2323/00; B32B2323/10; B32B2327/00; B32B2327/06; B32B2367/00
Claims Analysis
Total Claims: 41
Claim 1
Independent Claim
163 words
A process for the preparation of an oriented multilayer laminate film having at least three layers, said process comprising: (a) extruding either separately or together in a molten state (i) polypropylene selected from a homopolymer or a copolymer of propylene and wherein said copolymer comprises an alkene monomer having 2 or 4-6 carbons, (ii) adhesive of a polar modified polyolefin, and (iii) co-polyester of a polyesterification reaction product where the reactants are at least one glycol and at least one dibasic acid with the total reactants being at least three of the glycols and dibasic acids, (b) laminating (i), (ii) and (iii) together in the molten state to form the film, the film having the adhesive layer located between the polypropylene and co-polyester layers; (c) cooling the film; (d) drawing the film, either uniaxially or biaxially, sequentially or simultaneously, from 3 to 10 times in each direction in a temperature range that allows drawing without breaking; and (e) heat setting the oriented film.
Claim 2
Dependent Claim
163 words
A process for the preparation of an oriented multilayer laminate film having at least three layers, said process comprising: (a) extruding either separately or together in a molten state (i) polypropylene selected from a homopolymer or a copolymer of propylene and wherein said copolymer comprises an alkene monomer having 2 or 4-6 carbons, (ii) adhesive of a polar modified polyolefin, and (iii) co-polyester of a polyesterification reaction product where the reactants are at least one glycol and at least one dibasic acid with the total reactants being at least three of the glycols and dibasic acids, (b) laminating (i), (ii) and (iii) together in the molten state to form the film, the film having the adhesive layer located between the polypropylene and co-polyester layers; (c) cooling the film; (d) drawing the film, either uniaxially or biaxially, sequentially or simultaneously, from 3 to 10 times in each direction in a temperature range that allows drawing without breaking; and (e) heat setting the oriented film.
Claim 3
Dependent Claim
138 words
A process for the preparation of an oriented multilayer laminate film having at least three layers, said method comprising: (a) extruding in a molten state (i) polypropylene selected from a homopolymer or a copolymer of propylene wherein said copolymer comprises an alkene monomer having 2 or 4-6 carbons; (ii) adhesive; and (iii) co-polyester of a polyesterification reaction product where the reactants are at least one glycol and at least one dibasic acid with the total reactants being at least three of the glycols and dibasic acids, (b) laminating (i), (ii) and (iii) together in the molten state to form the film, the film having the adhesive layer located between the polypropylene and co-polyester layers; (c) cooling the film; (d) drawing the film in a temperature range that allows orienting without breaking; and (e) heat setting the oriented film.
Claim 4
Dependent Claim
138 words
A process for the preparation of an oriented multilayer laminate film having at least three layers, said method comprising: (a) extruding in a molten state (i) polypropylene selected from a homopolymer or a copolymer of propylene wherein said copolymer comprises an alkene monomer having 2 or 4-6 carbons; (ii) adhesive; and (iii) co-polyester of a polyesterification reaction product where the reactants are at least one glycol and at least one dibasic acid with the total reactants being at least three of the glycols and dibasic acids, (b) laminating (i), (ii) and (iii) together in the molten state to form the film, the film having the adhesive layer located between the polypropylene and co-polyester layers; (c) cooling the film; (d) drawing the film in a temperature range that allows orienting without breaking; and (e) heat setting the oriented film.
Claim 5
Dependent Claim
20 words
The process of claim 2 wherein extruding of said polypropylene particles, adhesive particles and co-polyester occurs either separately or together.
Claim 6
Dependent Claim
15 words
The process of claim 2 wherein the adhesive particles are of a polar modified olefin.
Claim 7
Dependent Claim
15 words
The process of claim 2 including drawing film either uniaxially or biaxially, sequentially or simultaneously.
Claim 8
Dependent Claim
17 words
The process of claim 2 including optionally adding additional layer(s) as required by the particular end use.
Claim 9
Dependent Claim
29 words
The process of claim 2 further comprising coating on the co-polyester layer a metal layer, said metal being selected from the group consisting of aluminum, copper, silver and gold.
Claim 10
Dependent Claim
16 words
The process of claim 2 wherein the polypropylene particles are a polypropylene copolymer containing inorganic filler.
Claim 11
Dependent Claim
17 words
The process of claim 2 wherein the adhesive particles comprises a copolymer of ethylene and methyl acrylate.
Claim 12
Dependent Claim
30 words
The process of claim 2 wherein the co-polyester layer is the reaction product of terephthalic acid, ethylene glycol and cyclohexanedimethanol, said product being molten at a temperature below 160° C.
Claim 13
Dependent Claim
56 words
The process of claim 2 wherein the adhesive particles are a reaction product of an olefin of 2-10 carbon atoms and a modifier selected from the group consisting of methyl acrylate, methyl methacrylate, ethyl acrylate, glycidyl methacrylate, butyl acrylate, 2-hydroxy ethylacrylate, vinyl acetate, maleic anhydride, acrylic acid, maleic acid, methacrylic acid, diethyl maleate and nonoethyl maleate.
Claim 14
Dependent Claim
21 words
The process of claim 2 wherein the outer surface of the external polypropylene layer is laminate to a poly(vinylidene chloride) layer.
Claim 15
Dependent Claim
31 words
The process of claim 2 wherein the outer surface on the polypropylene layer is coated with a second multilayer laminate film of a polypropylene layer and a vinylidene chloride polymer layer.
Claim 16
Dependent Claim
21 words
The process of claim 2 wherein the outer surface on the polypropylene layer is laminated to a layer of cellulosic paper.
Claim 17
Dependent Claim
23 words
The process of claim 2 wherein the (a) external layer comprises a propylene/ethylene copolymer having about 1%-4% ethylene monomer by weight of copolymer.
Claim 18
Dependent Claim
52 words
The process of claim 2 wherein the polypropylene particles are a polypropylene copolymer containing inorganic filler; the adhesive particles comprises a copolymer of ethylene and methyl acrylate; and the co-polyester layer is the reaction product of terephthalic acid, ethylene glycol and cyclohexanedimethanol, said product being molten at a temperature below 160° C.
Claim 19
Dependent Claim
91 words
The process of claim 11 wherein the polypropylene particles are a polypropylene copolymer containing inorganic filler; the adhesive particles are a reaction product of an olefin of 2-10 carbon atoms and a modifier selected from the group consisting of methyl acrylate, methyl methacrylate, ethyl acrylate, glycidyl methacrylate, butyl acrylate, 2-hydroxy ethylacrylate, vinyl acetate, maleic anhydride, acrylic acid, maleic acid, methacrylic acid, diethyl maleate and nonoethyl maleate; and the co-polyester layer is the reaction product of terephthalic acid, ethylene glycol and cyclohexanedimethanol, said product being molten at a temperature below 160° C.
Claim 20
Dependent Claim
25 words
The process of claim 4 wherein the modifier is at least one member selected from the group consisting of acrylates, acetates, anhydrides, acids and esters.
Claim 21
Dependent Claim
11 words
The process of claim 18 when the modifier is an acrylate.
Claim 22
Dependent Claim
11 words
The process of claim 18 wherein the modifier is an anhydride.
Claim 23
Dependent Claim
20 words
The process of claim 2 wherein the co-polyester is the polyesterification reaction product of two glycols and one dibasic acid.
Claim 24
Dependent Claim
10 words
The process of claim 11 wherein the film is clear.
Claim 25
Dependent Claim
10 words
The process of claim 21 wherein the film is clear.
Claim 26
Dependent Claim
145 words
A process for the preparation of an oriented multilayer laminate film having at least three layers, said method comprising: (a) extruding in a molten state (i) polypropylene selected from a homopolymer or a copolymer of propylene wherein the copolymer comprises an alkene monomer having 2 or 4-6 carbons; (ii) adhesive; and (iii) co-polyester of a polyesterification reaction product where the reactants are at least one glycol and at least one dibasic acid with the total reactants being at least three of the glycols and dibasic acids, (b) laminating (i), (ii) and (iii) together in the molten state to form the film, the film having the adhesive layer located between the polypropylene and co-polyester layers; (c) cooling the film; (d) biaxially drawing the film about 6-10 times in each direction in a temperature range that allows orienting without breaking; and (e) heat setting the oriented film.
Claim 27
Dependent Claim
145 words
A process for the preparation of an oriented multilayer laminate film having at least three layers, said method comprising: (a) extruding in a molten state (i) polypropylene selected from a homopolymer or a copolymer of propylene wherein the copolymer comprises an alkene monomer having 2 or 4-6 carbons; (ii) adhesive; and (iii) co-polyester of a polyesterification reaction product where the reactants are at least one glycol and at least one dibasic acid with the total reactants being at least three of the glycols and dibasic acids, (b) laminating (i), (ii) and (iii) together in the molten state to form the film, the film having the adhesive layer located between the polypropylene and co-polyester layers; (c) cooling the film; (d) biaxially drawing the film about 6-10 times in each direction in a temperature range that allows orienting without breaking; and (e) heat setting the oriented film.
Claim 28
Dependent Claim
29 words
The process of claim 24 further comprising coating on the co-polyester layer a metal layer, said metal being selected from the group consisting of aluminum, copper, silver and gold.
Claim 29
Dependent Claim
17 words
The process of claim 24 wherein the drawing is at least about 7-10 times in each direction.
Claim 30
Dependent Claim
30 words
The process of claim 24 wherein the co-polyester layer is the reaction product of terephthalic acid, ethylene glycol and cyclohexanedimethanol, said product being molten at a temperature below 160° C.
Claim 31
Dependent Claim
20 words
The process of claim 24 wherein the co-polyester is the polyesterification reaction product of two glycols and one dibasic acid.
Claim 32
Dependent Claim
10 words
The process of claim 24 wherein the film is clear.
Claim 33
Dependent Claim
10 words
The process of claim 29 wherein the film is clear.
Claim 34
Dependent Claim
158 words
A process for the preparation of an oriented multilayer laminate film having at least three layers, said method comprising: (a) extruding in a molten state (i) polypropylene selected from a homopolymer or a copolymer of propylene and wherein the copolymer comprises an alkene monomer having 2 or 4-6 carbons; (ii) adhesive; and (iii) co-polyester of a polyesterification reaction product where the reactants are at least one glycol and at least one dibasic acid with the total reactants being at least three of the glycols and dibasic acids, (b) laminating (i), (ii) and (iii) together in the molten state to form the film, the film having the adhesive layer located between the polypropylene and co-polyester layers; (c) cooling the film; (d) drawing the film at least about 4-10 times in a machine direction and at least about 9-10 times in a transverse direction in a temperature range that allows orienting without breaking; and (e) heat setting the oriented film.
Claim 35
Dependent Claim
158 words
A process for the preparation of an oriented multilayer laminate film having at least three layers, said method comprising: (a) extruding in a molten state (i) polypropylene selected from a homopolymer or a copolymer of propylene and wherein the copolymer comprises an alkene monomer having 2 or 4-6 carbons; (ii) adhesive; and (iii) co-polyester of a polyesterification reaction product where the reactants are at least one glycol and at least one dibasic acid with the total reactants being at least three of the glycols and dibasic acids, (b) laminating (i), (ii) and (iii) together in the molten state to form the film, the film having the adhesive layer located between the polypropylene and co-polyester layers; (c) cooling the film; (d) drawing the film at least about 4-10 times in a machine direction and at least about 9-10 times in a transverse direction in a temperature range that allows orienting without breaking; and (e) heat setting the oriented film.
Claim 36
Dependent Claim
16 words
The process of claim 31 wherein the drawing is about 5-10 times in the machine direction.
Claim 37
Dependent Claim
29 words
The process of claim 31 further comprising coating a metal layer onto the co-polyester layer, said metal being selected from the group consisting of aluminum, copper, silver and gold.
Claim 38
Dependent Claim
30 words
The process of claim 31 wherein the co-polyester layer is the reaction product of terephthalic acid, ethylene glycol and cyclohexanedimethanol, said product being molten at a temperature below 160° C.
Claim 39
Dependent Claim
20 words
The process of claim 31 wherein the co-polyester is the polyesterification reaction product of two glycols and one dibasic acid.
Claim 40
Dependent Claim
10 words
The process of claim 31 wherein the film is clear.
Claim 41
Dependent Claim
10 words
The process of claim 35 wherein the film is clear.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-06-27 | 1997-12-27 | 1998-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-06-27 | 2001-12-27 | 2002-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-06-27 | 2005-12-27 | 2006-06-28 | $7700.00 | Window Closed / Lapsed |