US4530876A
Expired / Lapsed
US
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Warp sizing composition, sized warp strands and process
Assignee: PPG Industries Inc
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Filing: 1983-08-12
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Granted: 1985-07-23
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Expires: 2003-08-12
Abstract
Abstract Warp sizing compositions are used to treat textile yarn to withstand the abrasive forces encountered by the warp yarn during weaving. A warp sizing composition having poly(vinyl alcohol); and a second film forming polymer, which is water soluble, dispersible or emulsifiable and having a Tg of less than 70° C., and an average particle size of less than 5 microns, and being dispersible with poly(vinyl alcohol); and water results in treated yarn having good flexibility, and abrasion resistance strength. The more flexible treated warp yarn encounters less damage during the slashing operation to result in improved weaving performance. The process for producing glass fiber strand yarn treated with the warp sizing composition involves forming the glass fibers, treating the glass fibers with a forming size, gathering the glass fibers into one or more strands, collecting the strands, drying the strands to remove enough moisture to enable the strands to be removed from the collected strand package, rewinding the strands, beaming a plurality of the rewound strands, treating the plurality of rewound strands from a beam with the warp sizing composition, drying the treated strands, splitting the dried treated strands and winding the split strands onto a beam.
Inventors
- 👤 George L. Brodmann
- 👤 Ernest L. Lawton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:03
CPC Classifications
C; C03; C03C; C03C25/00; C03C25/10; C03C25/24; C03C25/26; H; H05; H05K; H05K1/00; H05K1/02; H05K1/03; H05K1/0313; H05K1/0353; H05K1/0366; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2938; Y10T428/2964
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
107 words
A textile yarn warp sizing composition, comprising: a. a major amount of the solids of the composition of one or more water soluble, emulsifiable or dispersible fiber forming poly(vinyl alcohol) polymers, b. an amount of about 1 to about 50 weight percent of the solids of the composition of a water soluble, emulsifiable or dispersible second film forming polymer dispersible with the poly(vinyl alcohol) having a Tg of less than 70° C. and present in a particle size of less than 5 microns, and c. water in an amount to give a solids content to the composition in the range of about 3 to 25 weight percent.
Claim 2
Dependent Claim
107 words
A textile yarn warp sizing composition, comprising: a. a major amount of the solids of the composition of one or more water soluble, emulsifiable or dispersible fiber forming poly(vinyl alcohol) polymers, b. an amount of about 1 to about 50 weight percent of the solids of the composition of a water soluble, emulsifiable or dispersible second film forming polymer dispersible with the poly(vinyl alcohol) having a Tg of less than 70° C. and present in a particle size of less than 5 microns, and c. water in an amount to give a solids content to the composition in the range of about 3 to 25 weight percent.
Claim 3
Dependent Claim
23 words
Aqueous warp sizing of claim 1, wherein the second film forming polymer is selected from the group consisting of polyurethane ionomers and copolyesters.
Claim 4
Dependent Claim
28 words
Aqueous warp sizing of claim 1, wherein the ratio of the poly(vinyl alcohol) to second film forming polymer is in the range of about 70:30 to about 99:1.
Claim 5
Dependent Claim
19 words
Aqueous warp sizing of claim 1, wherein the poly(vinyl alcohol) is partially hydrolyzed and has a medium molecular weight.
Claim 6
Dependent Claim
31 words
Aqueous warp sizing of claim 1, wherein the polyurethane ionomer is produced by reacting organic aliphatic diisocyanates with tri or tetraethylene glycol and aliphatic glycols having carboxyl, carboxylate or amine groups.
Claim 7
Dependent Claim
27 words
Aqueous warp sizing of claim 1, wherein the second film forming polymer is a copolyester of an amino sulfo isophthalic acid and aliphatic or cycloaliphatic dicarboxylic acids.
Claim 8
Dependent Claim
14 words
Aqueous warp sizing of claim 1, wherein there is present one or more lubricants.
Claim 9
Dependent Claim
14 words
Aqueous warp sizing of claim 1, wherein there is present one or more plasticizers.
Claim 10
Dependent Claim
19 words
Aqueous warp sizing of claim 1, wherein there is present one or more lubricants and one or more plasticizers.
Claim 11
Dependent Claim
15 words
Aqueous warp sizing of claim 1, wherein there is present a mixture of poly(vinyl alcohols).
Claim 12
Dependent Claim
12 words
Textile yarn having the dried residue of warp sizing of claim 1.
Claim 13
Dependent Claim
114 words
A glass fiber warp sizing composition, comprising: a. a major amount of the solids of one or more film forming poly(vinyl alcohol) polymers that are water soluble, emulsifiable or dispersible, b. a minor amount of the solids of a water soluble, emulsifiable or dispersible second film forming polymer selected from the group consisting of polyurethane ionomers and copolyesters present in an average particle size of less than 5 microns, wherein the ratio of the poly(vinyl alcohol) to second film forming polymer is in the range of about 70:30 to about 99:1, c. water in an amount to give a solids content to the composition in the range of about 3 to 25 weight percent.
Claim 14
Dependent Claim
114 words
A glass fiber warp sizing composition, comprising: a. a major amount of the solids of one or more film forming poly(vinyl alcohol) polymers that are water soluble, emulsifiable or dispersible, b. a minor amount of the solids of a water soluble, emulsifiable or dispersible second film forming polymer selected from the group consisting of polyurethane ionomers and copolyesters present in an average particle size of less than 5 microns, wherein the ratio of the poly(vinyl alcohol) to second film forming polymer is in the range of about 70:30 to about 99:1, c. water in an amount to give a solids content to the composition in the range of about 3 to 25 weight percent.
Claim 15
Dependent Claim
156 words
Treated glass fiber strand yarn, comprising: a. individual glass fibers having a substantially dried residue of a glass fiber lubricant, and b. a film coating substantially encapsulating a plurality of the lubricant treated glass fibers, wherein the coating is a substantially dried residue of a warp sizing composition having: (1) one or more film forming poly(vinyl alcohol) polymers that are water soluble, emulsifiable, or dispersible in a major amount of the solids of the aqueous warp sizing, (2) a water soluble, emulsifiable or dispersible second film forming polymer compatible with the poly(vinyl alcohol) having a Tg of less than 70° C. having an average particle size of less than 5 microns and that is dispersible with poly(vinyl alcohol) in a minor amount of solids of the aqueous warp sizing composition, and (3) water in an amount to give a solids content to the warp sizing composition in the range of about 3 to 25 weight percent.
Claim 16
Dependent Claim
156 words
Treated glass fiber strand yarn, comprising: a. individual glass fibers having a substantially dried residue of a glass fiber lubricant, and b. a film coating substantially encapsulating a plurality of the lubricant treated glass fibers, wherein the coating is a substantially dried residue of a warp sizing composition having: (1) one or more film forming poly(vinyl alcohol) polymers that are water soluble, emulsifiable, or dispersible in a major amount of the solids of the aqueous warp sizing, (2) a water soluble, emulsifiable or dispersible second film forming polymer compatible with the poly(vinyl alcohol) having a Tg of less than 70° C. having an average particle size of less than 5 microns and that is dispersible with poly(vinyl alcohol) in a minor amount of solids of the aqueous warp sizing composition, and (3) water in an amount to give a solids content to the warp sizing composition in the range of about 3 to 25 weight percent.
Claim 17
Dependent Claim
24 words
Treated glass fiber strand of claim 13, wherein the second film forming polymer is selected from the group consisting of polyurethane ionomers and copolyesters.
Claim 18
Dependent Claim
20 words
Treated glass fiber strand of claim 13, wherein the poly(vinyl alcohol) is partially hydrolyzed and has a medium molecular weight.
Claim 19
Dependent Claim
17 words
Treated glass fiber strand of claim 13, wherein the warp sizing has present one or more lubricants.
Claim 20
Dependent Claim
19 words
Treated glass fiber strand of claim 13, wherein the second film forming polymer has present carboxylic or amino groups.
Claim 21
Dependent Claim
22 words
Treated glass fiber strand of claim 13, wherein the warp sizing has present one or more lubricants and one or more plasticizers.
Claim 22
Dependent Claim
262 words
Process of producing treated glass fiber strand yarn suitable for use as warp yarn, comprising: (a) attenuating a plurality of glass fibers from molten streams of glass through orifices in a bushing, (b) treating the glass fibers with an aqueous composition of a glass fiber lubricant and film forming material, (c) gathering the fibers into one or more strands, (d) collecting the one or more strands on a forming tube on a winder, (e) drawing a substantial amount of the moisture from the glass fiber strands on the forming tube to enable the strand to be easily removed from the tube; (f) rewinding the glass fiber strand with or without a twist, (g) beaming a plurality of the rewound strands, (h) unwinding the plurality of rewound strands in the beam, (i) treating the plurality of strands with an aqueous containing warp sizing composition having as the major amount of the solids of the composition one or more water soluble, emulsifiable or dispersible film forming poly(vinyl alcohol) polymers, and as a minor amount of the solids a second film forming polymer dispersible with the poly(vinyl alcohol) polymer and having a Tg of less than 70° C. and having in an average particle size of less than 5 microns, and water in an amount to give a solids content to the warp sizing composition in the range of about 3 to about 25 weight percent, (j) drying the treated strands to remove a substantial amount of the moisture (k) splitting the strands into distinct treated strands, (l) rewinding the strands onto a weaver's beam.
Claim 23
Dependent Claim
262 words
Process of producing treated glass fiber strand yarn suitable for use as warp yarn, comprising: (a) attenuating a plurality of glass fibers from molten streams of glass through orifices in a bushing, (b) treating the glass fibers with an aqueous composition of a glass fiber lubricant and film forming material, (c) gathering the fibers into one or more strands, (d) collecting the one or more strands on a forming tube on a winder, (e) drawing a substantial amount of the moisture from the glass fiber strands on the forming tube to enable the strand to be easily removed from the tube; (f) rewinding the glass fiber strand with or without a twist, (g) beaming a plurality of the rewound strands, (h) unwinding the plurality of rewound strands in the beam, (i) treating the plurality of strands with an aqueous containing warp sizing composition having as the major amount of the solids of the composition one or more water soluble, emulsifiable or dispersible film forming poly(vinyl alcohol) polymers, and as a minor amount of the solids a second film forming polymer dispersible with the poly(vinyl alcohol) polymer and having a Tg of less than 70° C. and having in an average particle size of less than 5 microns, and water in an amount to give a solids content to the warp sizing composition in the range of about 3 to about 25 weight percent, (j) drying the treated strands to remove a substantial amount of the moisture (k) splitting the strands into distinct treated strands, (l) rewinding the strands onto a weaver's beam.
Claim 24
Dependent Claim
13 words
Treated glass fiber strand warp yarn produced by the process of claim 19.
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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) | 1988-07-22 | 1989-01-21 | 1989-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-22 | 1993-01-21 | 1993-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-07-22 | 1997-01-21 | 1997-07-23 | $7700.00 | Window Closed / Lapsed |