Polyester filament woven fabric for air bags
View Patent ↗A polyester plain weave fabric construction wherein said fabric has a basis weight of between 150 to 300 g/m 2 with tongue tear strength equal to or better than nylon fabrics of the same construction and weight. The present invention relates to both coated and uncoated polyester filament woven fabric. The uncoated fabric is useful for industrial purposes wherein the fabric has a warp tongue tear resistance of at least 0.75 N/g/m 2 , when the fabric basis weight is between 150 to 300 g/m 2 The preferred uncoated polyester filament yarn has a linear density of between about 200 to about 800 dtex, a tenacity of at least 65 cN/tex, a tensile index of at least 350. The fabrics can be coated with chloroprene, neoprene, polyurethane, silicone or other organic coatings to reduce air permeability. The fabric of the present invention may also be constructed with the warp and/or filling yarn having an aspect ratio between 1.2 and 6.
1. An improved uncoated polyester filament plain weave fabric woven from a polyester yarn having a tensile index of at least about 350, said fabric has a warp and/or filling tongue tear strength of at least 0.75 N/g/m 2 .
2. The woven fabric of claim 1 , wherein the said yarn has a tenacity of at least about 65 cN/tex.
3. The woven fabric of claim 1 , wherein said fabric has a basis weight of between 150 to 300 g/m 2 .
4. The woven fabric of claim 1 , wherein said polyester yarn has a linear density of between 200 and 800 dtex.
5. An uncoated polyester airbag, comprising the plain weave polyester fabric of claim 1 .
6. The polyester airbag of claim 5 , wherein said fabric has a basis weight of between 150 to 300 g/m 2 .
7. A polyester airbag having a plain weave fabric construction wherein said fabric is woven from a polyester yarn having a tensile index of at least about 350, said fabric has a basis weight of between 150 to 300 g/m 2 with tongue tear strength equal to or better than nylon airbags of the same construction and weight.
8. The airbag of claim 7 , wherein said fabric is coated and said tongue tear strength is equal to or better than nylon airbags similarly coated and of the same construction and weight.
9. The airbag of claim 7 , wherein said fabric is constructed of non-round yarns and said nylon airbags are similarly constructed.
10. A polyester filament plain weave fabric woven from polyester yarn, said yarn having a tensile index of at least about 350, said fabric having a basis weight of between 150 to 300 g/m 2 with tongue tear strength equal to or better than nylon fabrics of the same construction and weight.
11. The fabric of claim 10 , wherein the warp and/or filling filaments of said fabric have an aspect ratio greater than 1.2.
12. The fabric of claim 11 , wherein said aspect ratio is between 1.2 and 6.
13. The fabric of claim 10 , wherein the filling yarns of said fabric are round in cross-section.
14. The fabric of claim 10 , wherein said fabric is coated.
15. The fabric of claim 14 , wherein said coating is selected from chloroprene, neoprene, polyurethane, silicon or other organic coatings to reduce air permeability.
16. The fabric of claim 14 , wherein said warp and/or filling filaments of said fabric have an aspect ratio greater than 1.2.
17. The fabric of claim 16 , wherein said filling yarns of said fabric are round in cross-section.
18. A polyester filament plain weave fabric woven from polyester yarn, said yarn having a tensile index of at least about 350, said fabric having a basis weight of between 150 to 300 g/m 2 with a tongue tear strength of at least 0.75 N/g/m 2 , wherein the warp and/or filling filaments of said fabric have an aspect ratio between 1.2 and 6.
19. The fabric of claim 18 , wherein said fabric is coated.
20. The fabric of claim 19 , wherein said coating is selected from chloroprene, neoprene, polyurethane, silicone or other organic coatings to reduce air permeability.
21. An improved uncoated polyester filament plain weave fabric woven from a polyester yarn having a tensile index of at least about 350, said fabric has a warp and filling tongue tear strength of at least 0.7 N/g/m 2 .
22. The woven fabric of claim 21 , wherein said fabric has a basis weight of between 150 to 300 g/m 2 .
23. The woven fabric of claim 21 , wherein said polyester yarn has a linear density of between 200 and 800 dtex.
24. The polyester airbag of claim 5 , wherein the yarn of said fabric has a tenacity of at least about 65 cN/tex.
25. The polyester airbag of claim 5 , wherein the yarn of said fabric has a linear density of between 200 and 800 dtex.
26. The polyester airbag of claim 7 , wherein said polyester yarn has a tenacity of at least about 65 cN/tex.
27. The polyester airbag of claim 7 , wherein said polyester yarn has a linear density of between 200 and 800 dtex.
28. The airbag of claim 8 , wherein said fabric is coated with a coating selected from chloroprene, neoprene, polyurethane, silicone or other organic coatings to reduce air permeability.
29. The woven fabric of claim 10 , wherein the said polyester yarn has a tenacity of at least about 65 cN/tex.
30. The woven fabric of claim 10 , wherein said polyester yarn has a linear density of between 200 and 800 dtex.
31. The woven fabric of claim 18 , wherein the said polyester yarn has a tenacity of at least about 65 cN/tex.
32. The woven fabric of claim 18 , wherein said polyester yarn has a linear density of between 200 and 800 dtex.
33. The woven fabric of claim 21 , wherein the said polyester yarn has a tenacity of at least about 65 cN/tex.