Patents by Inventor Tsutomu Akechi
Tsutomu Akechi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11377064Abstract: The purpose of the present invention pertains to a coated fabric used for an automotive airbag, and more particularly, a coated fabric for an airbag most suitable for a rollover curtain airbag which is produced applying a sealing agent to a coated fabric and sewing the resulting fabric and which can keep the adhesion of the sealing agent to the coat resin even after long-term and high-temperature aging. The present coated fabric for an airbag is obtained by applying an addition-polymerizable solvent-free silicone resin onto at least one surface of a synthetic fiber textile, wherein a coating amount of the silicone resin is 15 to 45 g/m2; and a weft strain/warp strain ratio as observed in stretching the coated fabric is 0.30 to 0.65.Type: GrantFiled: August 25, 2014Date of Patent: July 5, 2022Assignee: TOYOBO CO., LTD.Inventors: Tsutomu Akechi, Takahiro Kuramoto
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Patent number: 11130467Abstract: An airbag fabric comprising a synthetic fiber, the fiber having a total fineness of 200 to 400 dtex, and the fabric having an average edgecomb resistance retention in the warp and weft directions after heating at 210° C. for 30 seconds of 60% or more and a residual shrinkage of 1.5% or less in both the warp and weft directions.Type: GrantFiled: August 17, 2018Date of Patent: September 28, 2021Assignee: TOYOBO CO., LTD.Inventors: Ryuji Kamimura, Tsutomu Akechi
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Patent number: 11060239Abstract: Provided is a coated fabric for airbags that exhibits a small variation in air permeability of the fabric in the width direction, and a method for producing a coated fabric for airbags capable of reducing the variation in air permeability. The coated fabric for airbags includes a woven fabric composed of synthetic fiber filaments and has an elastomer resin applied to one surface thereof, the coated fabric having an air permeability in the width direction of the coated fabric such that the maximum value of the air permeability is 1.5 times the average value or less.Type: GrantFiled: December 8, 2016Date of Patent: July 13, 2021Assignee: TOYOBO CO., LTD.Inventor: Tsutomu Akechi
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Publication number: 20210122323Abstract: The purpose of the present invention pertains to a coated fabric used for an automotive airbag, and more particularly, a coated fabric for an airbag most suitable for a rollover curtain airbag which is produced applying a sealing agent to a coated fabric and sewing the resulting fabric and which can keep the adhesion of the sealing agent to the coat resin even after long-term and high-temperature aging. The present coated fabric for an airbag is obtained by applying an addition-polymerizable solvent-free silicone resin onto at least one surface of a synthetic fiber textile, wherein a coating amount of the silicone resin is 15 to 45 g/m2; and a weft strain/warp strain ratio as observed in stretching the coated fabric is 0.30 to 0.65.Type: ApplicationFiled: December 30, 2020Publication date: April 29, 2021Inventors: Tsutomu Akechi, Takahiro Kuramoto
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Patent number: 10940825Abstract: The present invention relates to a coated fabric for airbags for use in automobiles, and provides a coated fabric that has eliminated or reduced coating agent dots, which are not solved in traditional techniques, and that has a smaller difference in physical properties in tear strength in the width direction of the fabric. The coated fabric for airbags that exhibit excellent fabric properties and appearance such that there is little variation in physical properties in the width direction of the fabric, and such that there are fewer coating agent dots can be provided by a production method characterized by the use of a knife-on-air technique as a resin coating method, the use of a knife whose front and rear part are differently shaped, and the running angle of the fabric when the knife is pressed on the fabric being 3 to 15?.Type: GrantFiled: March 13, 2017Date of Patent: March 9, 2021Assignee: TOYOBO CO., LTD.Inventor: Tsutomu Akechi
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Patent number: 10889259Abstract: A coated fabric for an airbag having improved tensile strength of coated fabric without increasing the strength of a raw yarn is provided. The coated fabric for the airbag comprises a coated silicone resin on one surface of a textile made of synthetic fiber filaments, wherein the silicone resin is present at a joint between warp and weft of a non-coated surface of the textile.Type: GrantFiled: December 22, 2014Date of Patent: January 12, 2021Assignee: TOYOBO CO., LTD.Inventor: Tsutomu Akechi
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Publication number: 20200353889Abstract: Problem: To provide an airbag fabric and a coated fabric for airbags that are lightweight and compact while maintaining the tensile strength required for airbags, and that can mitigate damage to seams of an airbag when the airbag deploys; and that allow for stable airbag deployment. Solution: An airbag fabric that is a fabric comprising a synthetic fiber, the fiber that constitutes the fabric having a total fineness of 200 to 400 dtex, an average edgecomb resistance retention in the warp and weft directions after heating at 210° C. for 30 seconds of 60% or more, and a residual shrinkage of 1.5% or less in both the warp and weft directions.Type: ApplicationFiled: August 17, 2018Publication date: November 12, 2020Applicant: TOYOBO CO., LTD.Inventors: Ryuji Kamimura, Tsutomu Akechi
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Publication number: 20200024798Abstract: Provided is a coated fabric for airbags that exhibits a small variation in air permeability of the fabric in the width direction, and a method for producing a coated fabric for airbags capable of reducing the variation in air permeability. The coated fabric for airbags includes a woven fabric composed of synthetic fiber filaments and has an elastomer resin applied to one surface thereof, the coated fabric having an air permeability in the width direction of the coated fabric such that the maximum value of the air permeability is 1.5 times the average value or less.Type: ApplicationFiled: December 8, 2016Publication date: January 23, 2020Applicant: TOYOBO CO., LTD.Inventor: Tsutomu Akechi
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Patent number: 10266971Abstract: The present invention provides a coating fabric for airbags where an elastomer is coated to at least one side of textile constituted from synthetic fiber filament, which is characterized in that the coating weight of the resin is as small as 10 to 20 g/m2 and an average resin thickness of the head top in the textile surface is 4.0 ?m to 12.0 ?m in both directions of warp and weft and that the average value of burning speed measured according to FMVSS 302 is not more than 60 mm/min in both directions of warp and weft and the maximum value thereof is not more than 1.2-fold to the average value in both directions of warp and weft.Type: GrantFiled: August 4, 2017Date of Patent: April 23, 2019Assignee: TOYOBO CO., LTD.Inventors: Tsutomu Akechi, Mamoru Kitamura
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Publication number: 20190071048Abstract: The present invention relates to a coated fabric for airbags for use in automobiles, and provides a coated fabric that has eliminated or reduced coating agent dots, which are not solved in traditional techniques, and that has a smaller difference in physical properties in tear strength in the width direction of the fabric. The coated fabric for airbags that exhibit excellent fabric properties and appearance such that there is little variation in physical properties in the width direction of the fabric, and such that there are fewer coating agent dots can be provided by a production method characterized by the use of a knife-on-air technique as a resin coating method, the use of a knife whose front and rear part are differently shaped, and the running angle of the fabric when the knife is pressed on the fabric being 3 to 15?.Type: ApplicationFiled: March 13, 2017Publication date: March 7, 2019Inventor: Tsutomu AKECHI
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Patent number: 10132030Abstract: [Problem] The purpose of the present invention is to provide a base fabric for an airbag which has a low initial air permeability, an excellent flammability, and in addition a small amount of thread fraying when the fabric is cut with a knife or sewn, even with a small amount of coating, [Solution] Provided is a base fabric for an airbag comprising a coated fabric wherein resin compositions are applied to at least one side of a textile, wherein the coating amount of the resin composition applied to the one side of the textile is 0.1 to 10 g/m2 in terms of a mass after drying, an air permeability under a differential pressure of 100 kPa is 0.05 L/cm2/min or less, a flammability measured in accordance with FMVSS302 is self-extinguishing, and the number of frayed thread at the end part after 100 repetitions of a scrub test in accordance with ISO5981 is 5 or less.Type: GrantFiled: March 18, 2014Date of Patent: November 20, 2018Assignee: TOYOBO CO., LTD.Inventor: Tsutomu Akechi
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Publication number: 20170327979Abstract: The present invention provides a coating fabric for airbags where an elastomer is coated to at least one side of textile constituted from synthetic fiber filament, which is characterized in that the coating weight of the resin is as small as 10 to 20 g/m2 and an average resin thickness of the head top in the textile surface is 4.0 ?m to 12.0 ?m in both directions of warp and weft and that the average value of burning speed measured according to FMVSS 302 is not more than 60 mm/min in both directions of warp and weft and the maximum value thereof is not more than 1.2-fold to the average value in both directions of warp and weft.Type: ApplicationFiled: August 4, 2017Publication date: November 16, 2017Inventors: Tsutomu Akechi, Mamoru Kitamura
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Patent number: 9790624Abstract: The present invention provides a coating fabric for airbags where an elastomer is coated to at least one side of textile constituted from synthetic fiber filament, which is characterized in that the coating weight of the resin is as small as 10 to 20 g/m2 and an average resin thickness of the head top in the textile surface is 4.0 ?m to 12.0 ?m in both directions of warp and weft and that the average value of burning speed measured according to FMVSS 302 is not more than 60 mm/min in both directions of warp and weft and the maximum value thereof is not more than 1.2-fold to the average value in both directions of warp and weft.Type: GrantFiled: May 24, 2010Date of Patent: October 17, 2017Assignee: Toyobo Co., Ltd.Inventors: Tsutomu Akechi, Mamoru Kitamura
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Patent number: 9732465Abstract: The present invention relates to a coated fabric for an air bag obtained by applying an elastomer resin onto at least one side of a woven fabric made from synthetic fiber. The applied amount of the elastomer resin is 25 to 60 g/m2. The average resin thickness on warp and weft at head top of the woven fabric surface is 8 ?m to 45 ?m. The number of foams having diameter of 30 ?m or larger is 100 or more/cm2 on the surface of a resin layer.Type: GrantFiled: September 19, 2013Date of Patent: August 15, 2017Assignee: Toyobo Co., Ltd.Inventor: Tsutomu Akechi
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Publication number: 20170136982Abstract: A coated fabric for an airbag having improved tensile strength of coated fabric without increasing the strength of a raw yarn is provided. The coated fabric for the airbag comprises a coated silicone resin on one surface of a textile made of synthetic fiber filaments, wherein the silicone resin is present at a joint between warp and weft of a non-coated surface of the textile.Type: ApplicationFiled: December 22, 2014Publication date: May 18, 2017Inventor: Tsutomu Akechi
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Patent number: 9650729Abstract: The present invention is coated fabric for airbags which is obtained by applying a silicone resin to at least one surface of woven fabric constituted of synthetic fiber filaments, in an amount of 20 g/m2 or less. The coated fabric is characterized in that in the uncoated base fabric, the warp crimp ratio is less than the weft crimp ratio, the warp crimp ratio is 4% or less, and the difference between the warp crimp ratio and the weft crimp ratio is 0.8-3.0%, and that the coated fabric has a air permeability, measured at a differential pressure of 100 kPa, of 0.02 L/cm2/min or less. Although the amount of the resin applied is 20 g/m2 or less, extremely low air permeability is ensured.Type: GrantFiled: February 6, 2013Date of Patent: May 16, 2017Assignee: Toyobo Co., Ltd.Inventors: Tsutomu Akechi, Mamoru Kitamura
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Publication number: 20160273157Abstract: The purpose of the present invention is to provide a base fabric for an airbag which has a low initial air permeability, an excellent flammability, and in addition a small amount of thread fraying when the fabric is cut with a knife or sewn, even with a small amount of coating, [Solution] Provided is a base fabric for an airbag comprising a coated fabric wherein resin compositions are applied to at least one side of a textile, wherein the coating amount of the resin composition applied to the one side of the textile is 0.1 to 10 g/m2 in terms of a mass after drying, an air permeability under a differential pressure of 100 kPa is 0.05 L/cm2/min or less, a flammability measured in accordance with FMVSS302 is self-extinguishing, and the number of frayed thread at the end part after 100 repetitions of a scrub test in accordance with ISO5981 is 5 or less.Type: ApplicationFiled: March 18, 2014Publication date: September 22, 2016Inventor: Tsutomu Akechi
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Publication number: 20160207492Abstract: The purpose of the present invention pertains to a coated fabric used for an automotive airbag, and more particularly, a coated fabric for an airbag most suitable for a rollover curtain airbag which is produced applying a sealing agent to a coated fabric and sewing the resulting fabric and which can keep the adhesion of the sealing agent to the coat resin even after long-term and high-temperature aging. The present coated fabric for an airbag is obtained by applying an addition-polymerizable solvent-free silicone resin onto at least one surface of a synthetic fiber textile, wherein a coating amount of the silicone resin is 15 to 45 g/m2; and a weft strain/warp strain ratio as observed in stretching the coated fabric is 0.30 to 0.65.Type: ApplicationFiled: August 25, 2014Publication date: July 21, 2016Inventors: Tsutomu Akechi, Takahiro Kuramoto
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Publication number: 20150247283Abstract: The present invention provides a coated fabric for an air bag obtained by applying an elastomer resin onto at least one side of a woven fabric made from synthetic fiber, characterized in that the applied amount of the elastomer resin is 25 to 60 g/m2, that an average resin thickness on warp and weft at head top of the woven fabric surface is 8 ?m to 45 ?m, and that number of foams having diameter of 30 ?m or larger is 100 or more/cm2 on the surface of a resin layer. The coated fabric for an air bag has a high heat resistance to such an extent that it can be used well for a reinforcing fabric for an air bag, has a heat resistance in such a level that it can be used for an inflator attachment port having high thermal load even in an applied amount of 60 g/m2 or less, and prevents, at the same time, a blocking property caused by contact between the coated surfaces.Type: ApplicationFiled: September 19, 2013Publication date: September 3, 2015Inventor: Tsutomu Akechi
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Publication number: 20150017859Abstract: The present invention is coated fabric for airbags which is obtained by applying a silicone resin to at least one surface of woven fabric constituted of synthetic fiber filaments, in an amount of 20 g/m2 or less. The coated fabric is characterized in that in the uncoated base fabric, the warp crimp ratio is less than the weft crimp ratio, the warp crimp ratio is 4% or less, and the difference between the warp crimp ratio and the weft crimp ratio is 0.8-3.0%, and that the coated fabric has a air permeability, measured at a differential pressure of 100 kPa, of 0.02 L/cm2/min or less. Although the amount of the resin applied is 20 g/m2 or less, extremely low air permeability is ensured.Type: ApplicationFiled: February 6, 2013Publication date: January 15, 2015Inventors: Tsutomu Akechi, Mamoru Kitamura