US5055338A
Expired / Lapsed
US
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Metallized breathable films prepared from melt embossed polyolefin/filler precursor films
Assignee: ExxonMobil Chemical Patents Inc
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Filing: 1988-09-29
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Granted: 1991-10-08
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Expires: 2008-09-29
Abstract
Abstract A breathable metallized polyolefin film is prepared by: melt embossing a highly filled polyolefin film to impose a pattern of different film thickness therein; stretching the melt embossed film to impart greater permeability in the area of reduced thickness in comparison to the areas of greater thickness; and coating the resulting stretched embossed film with a suitable metal.
Inventors
- 👤 Paresh J. Sheth
- 👤 Francis M. Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:23
CPC Classifications
B; B29; B29C; B29C55/00; B29C55/02; B29C55/04; B29C55/10; B29C55/12; B29D; B29D7/00; B29D7/01; C; C08; C08J; C08J7/00; C08J7/04; C08J7/042; C08J7/0423; C08J7/043; C08J7/044; B29C59/00; B29C59/02; B29C59/04; B29C71/00; B29C71/02; B29K; B29K2023/00; B29K2023/04; B29K2023/06; B29K2105/00; B29K2105/06; B29K2105/16; B29K2995/00; B29K2995/0037; B29K2995/0065; C08J2323/00; C08J2323/02; Y; Y10; Y10S; Y10S428/00; Y10S428/91; Y10T; Y10T428/00; Y10T428/24; Y10T428/24355; Y10T428/24471; Y10T428/24479; Y10T428/24496; Y10T428/24504; Y10T428/249921; Y10T428/249953; Y10T428/249986; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/31504; Y10T428/31678; Y10T428/31692
Claims Analysis
Total Claims: 39
Claim 1
Independent Claim
90 words
A metallized breathable film produced by a process comprising the steps of: mixing a polyolefin with a filler to form a polyolefin/filler mixture containing between about 15 percent to about 35 percent filler by volume; extruding a precursor film from the polyolefin/filler mixture; melt embossing the precursor film to impose therein a pattern of different film thicknesses; stretching the melt embossed precursor film to impart greater permeability in the areas of reduced thickness thereof in comparison to the areas of greater thickness; and coating the stretched film with a metal.
Claim 2
Dependent Claim
90 words
A metallized breathable film produced by a process comprising the steps of: mixing a polyolefin with a filler to form a polyolefin/filler mixture containing between about 15 percent to about 35 percent filler by volume; extruding a precursor film from the polyolefin/filler mixture; melt embossing the precursor film to impose therein a pattern of different film thicknesses; stretching the melt embossed precursor film to impart greater permeability in the areas of reduced thickness thereof in comparison to the areas of greater thickness; and coating the stretched film with a metal.
Claim 3
Dependent Claim
33 words
The breathable film of claim 1, further produced by the step of heat setting the stretched film at a temperature above the stretching temperature and below the softening temperature of the stretched film.
Claim 4
Dependent Claim
22 words
The metallized breathable film of claim 1, wherein the polyolefin is a copolymer of ethylene and a C 4 -C 10 alpha-olefin.
Claim 5
Dependent Claim
18 words
The metallized breathable film of claim 1, wherein the filler is calcium carbonate surface treated with calcium stearate.
Claim 6
Dependent Claim
18 words
The metallized breathable film of claim 1, wherein the precursor film is melt embossed with a diamond pattern.
Claim 7
Dependent Claim
12 words
The metallized breathable film of claim 1, wherein said metal is aluminum.
Claim 8
Dependent Claim
67 words
The breathable film of claim 1, wherein the filler is a material selected from the group consisting of calcium carbonate; talc; clay; kaolin; silica; diatomaceous earth; magnesium carbonate; barium carbonate; magnesium sulfate; barium sulfate; calcium sulfate; aluminum hydroxide; zinc oxide; magnesium hydroxide; calcium oxide; magnesium oxide; titanium oxide; alumina; mica; glass powder; zeolite; silica clay; wood powder; pulp powder; cellulose powder; polytetrafluoroethylene powder; and aromatic polyamide powder.
Claim 9
Dependent Claim
56 words
A metallized breathable film, comprising: a polyolefin and a filler in a polyolefin/filler mixture containing between about 15 percent to about 35 percent filler by volume; a pattern of different film thicknesses having greater permeability in the areas of reduced thickness thereof in comparison to the areas of greater thickness; and a coating of a metal.
Claim 10
Dependent Claim
56 words
A metallized breathable film, comprising: a polyolefin and a filler in a polyolefin/filler mixture containing between about 15 percent to about 35 percent filler by volume; a pattern of different film thicknesses having greater permeability in the areas of reduced thickness thereof in comparison to the areas of greater thickness; and a coating of a metal.
Claim 11
Dependent Claim
22 words
The metallized breathable film of claim 8, wherein the polyolefin is a copolymer of ethylene and a C 4 -C 10 alpha-olefin.
Claim 12
Dependent Claim
18 words
The metallized breathable film of claim 8, wherein the filler is calcium carbonate surface treated with calcium separate.
Claim 13
Dependent Claim
18 words
The metallized breathable film of claim 8, wherein the pattern of different film thicknesses is a diamond pattern.
Claim 14
Dependent Claim
12 words
The metallized breathable film of claim 8, wherein said metal is aluminum.
Claim 15
Dependent Claim
68 words
The metalized breathable film of claim 8, wherein the filler is a material selected from the group consisting of calcium carbonate; talc; clay; kaolin; silica; diatomaceous earth; magnesium carbonate; barium carbonate; magnesium sulfate; barium sulfate; calcium sulfate; aluminum hydroxide; zinc oxide; magnesium hydroxide; calcium oxide; magnesium oxide; titanium oxide; alumina; mica; glass powder; zeolite; silica clay; wood powder; pulp powder; cellulose powder; polytetrafluoroethylene powder; and aromatic polyamide powder.
Claim 16
Dependent Claim
96 words
A metallized breathable film by a process comprising the steps of: mixing a polyolefin with a filler to form a polyolefin/filler mixture containing between about 15 percent to about 35 percent filler by volume; cast extruding a precursor film of the polyolefin/filler mixture onto at least one melt embossing roller to impose therein a pattern of different film thicknesses; stretching the melt embossed precursor film in the transverse direction to impart greater permeability in the areas of reduced thickness thereof in comparison to the areas of greater thickness; and coating the stretched film with a metal.
Claim 17
Dependent Claim
96 words
A metallized breathable film by a process comprising the steps of: mixing a polyolefin with a filler to form a polyolefin/filler mixture containing between about 15 percent to about 35 percent filler by volume; cast extruding a precursor film of the polyolefin/filler mixture onto at least one melt embossing roller to impose therein a pattern of different film thicknesses; stretching the melt embossed precursor film in the transverse direction to impart greater permeability in the areas of reduced thickness thereof in comparison to the areas of greater thickness; and coating the stretched film with a metal.
Claim 18
Dependent Claim
33 words
The breathable film of claim 14, further produced by the step of heat setting the stretched film at a temperature above the stretching temperature and below the softening temperature of the stretched film.
Claim 19
Dependent Claim
21 words
The breathable film of claim 28, wherein the polyolefin is a copolymer of ethylene and a C 4 -C 10 alpha-olefin.
Claim 20
Dependent Claim
17 words
The breathable film of claim 14, wherein the filler is calcium carbonate surface treated with calcium stearate.
Claim 21
Dependent Claim
17 words
The breathable film of claim 14, wherein the precursor film is melt embossed with a diamond pattern.
Claim 22
Dependent Claim
11 words
The breathable film of claim 14, wherein the metal is aluminum.
Claim 23
Dependent Claim
67 words
The breathable film of claim 14, wherein the filler is a material selected from the group consisting of calcium carbonate; talc; clay; kaolin; silica; diatomaceous earth; magnesium carbonate; barium carbonate; magnesium sulfate; barium sulfate; calcium sulfate; aluminum hydroxide; zinc oxide; magnesium hydroxide; calcium oxide; magnesium oxide; titanium oxide; alumina; mica; glass powder; zeolite; silica clay; wood powder; pulp powder; cellulose powder; polytetrafluoroethylene powder; and aromatic polyamide powder;
Claim 24
Independent Claim
90 words
A method of making a metallized breathable film, comprising the steps of: mixing a polyolefin with a filler to form a polyolefin/filler mixture containing between about 15 percent to about 35 percent filler by volume; extruding a precursor film from the polyolefin/filler mixture; melt embossing the precursor film to impose therein a pattern of different film thicknesses; stretching the melt embossed precursor film to impart greater permeability in the areas of reduced thickness thereof in comparison to the areas of greater thickness; and coating the stretched film with a metal.
Claim 25
Independent Claim
90 words
A method of making a metallized breathable film, comprising the steps of: mixing a polyolefin with a filler to form a polyolefin/filler mixture containing between about 15 percent to about 35 percent filler by volume; extruding a precursor film from the polyolefin/filler mixture; melt embossing the precursor film to impose therein a pattern of different film thicknesses; stretching the melt embossed precursor film to impart greater permeability in the areas of reduced thickness thereof in comparison to the areas of greater thickness; and coating the stretched film with a metal.
Claim 26
Dependent Claim
31 words
The method of claim 21, further comprising the step of heat setting the stretched film at a temperature above the stretching temperature and below the softening temperature of the stretched film.
Claim 27
Dependent Claim
20 words
The method of claim 21, wherein the polyolefin is a copolymer of ethylene and a C 4 -C 10 alpha-olefin.
Claim 28
Dependent Claim
16 words
The method of claim 21, wherein the filler is calcium carbonate surface treated with calcium stearate.
Claim 29
Dependent Claim
16 words
The method of claim 21, wherein the precursor film is melt embossed with a diamond pattern.
Claim 30
Dependent Claim
10 words
The method of claim 21 wherein said metal is aluminum.
Claim 31
Dependent Claim
67 words
A method according to claim 21 wherein the filler is a material selected from the group consisting of calcium carbonate; talc; clay; kaolin; silica; diatomaceous earth; magnesium carbonate; barium carbonate; magnesium sulfate; barium sulfate; calcium sulfate; aluminum hydroxide; zinc oxide; magnesium hydroxide; calcium oxide; magnesium oxide; titanium oxide; alumina; mica; glass powder; zeolite; silica clay; wood powder; pulp powder; callulose powder; polytetrafluoroethylene powder; and aromatic polyamide powder.
Claim 32
Independent Claim
96 words
A method of making a metallized breathable film, comprising the steps of: mixing a polyolefin with a filler to form a polyolefin/filler containing between about 15 percent to about 35 percent filler by volume; cast extruding a precursor film of the polyolefin/filler mixture onto at least one melt embossing roller to impose therein a pattern of different film thicknesses; stretching the melt embossed precursor film in the transverse direction to impact greater permeability in the areas of reduced thickness thereof in comparison to the areas of greater thickness; and coating the stretched film with a metal.
Claim 33
Independent Claim
96 words
A method of making a metallized breathable film, comprising the steps of: mixing a polyolefin with a filler to form a polyolefin/filler containing between about 15 percent to about 35 percent filler by volume; cast extruding a precursor film of the polyolefin/filler mixture onto at least one melt embossing roller to impose therein a pattern of different film thicknesses; stretching the melt embossed precursor film in the transverse direction to impact greater permeability in the areas of reduced thickness thereof in comparison to the areas of greater thickness; and coating the stretched film with a metal.
Claim 34
Dependent Claim
31 words
The method of claim 28, further comprising the step of heat setting the stretched film at a temperature above the stretching temperature and below the softening temperature of the stretched film.
Claim 35
Dependent Claim
20 words
The method of claim 28, wherein the polyolefin is a copolymer of ethylene and a C 4 -C 10 alpha-olefin.
Claim 36
Dependent Claim
16 words
The method of claim 28, wherein the filler is calcium carbonate surface treated with calcium stearate.
Claim 37
Dependent Claim
16 words
The method of claim 28, wherein the precursor film is melt embossed with a diamond pattern.
Claim 38
Dependent Claim
10 words
The method of claim 28 wherein said metal is aluminum.
Claim 39
Dependent Claim
66 words
The method of claim 28 wherein the filler is a material selected from the group consisting of calcium carbonate; talc; clay; kaolin; silica; diatomaceous earth; magnesium carbonate; barium carbonate; magnesium sulfate; barium sulfate; calcium sulfate; aluminum hydroxide; zinc oxide; magnesium hydroxide; calcium oxide; magnesium oxide; titanium oxide; alumina; mica; glass powder; zeolite; silica clay; wood powder; pulp powder; cellulose powder; polytetrafluoroethylene powder; and aromatic polyamide powder.
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