Toyo Boseki Kabushiki Kaisha

Toyobo Co., Ltd.

Teikoku Seiyaku Co., Ltd.

Hideo Isoda

Mitsuhiro Sakuda

Kenichiro Kano

Tadaaki Hamaguchi

Takashi Tsuruta

Gaku Maruyama

Sadanobu Shirai

Takashi Koida

Takahiro Hattori

Masahiro Inazuki

Hiroyuki Sakamoto

Hiroaki Hagiwara

Miho Ishigure

Hiroyasu Sakaguchi

Yasushi Yamada

Mamoru Kitamura

Kunio Kimura

Takashi Nishida

Kenji Tanaka

Michio Kobayashi

Seiji Sawahara

Yoshihiro Amagi

The present invention relates to a backing having a three-layer structure prepared by sticking together an inner fiber layer for holding a pasty preparation, a film layer having through-holes, and an air-permeable outer fiber layer which prevents leaking out of the pasty preparation or a liquid component exuded from the pasty preparation, and also relates to an aqueous patch using the backing which can be applied for a long time.

Backing having three-layer structure and aqueous patch using the backing

The present invention relates to a backing for a water-based patch consisting of the following constituents, wherein the backing is excellent in pasty preparation retention and moisture retention, improves the persistence of drug efficacy by inhibiting the sublimation of the drug, gives neither restrained feeling nor rough feeling due to a thin thickness and an excellent elasticity, controls the moisture permeability, gives almost no sticky feeling and thereby gives an excellent feeling in application. A patch backing for a water-based pasty preparation consisting of a laminate, wherein the laminate consists of three layers, a film layer having through-holes is laminated between a nonwoven fabric layer A and a nonwoven fabric layer B, said film layer consists of a resin containing an olefin elastomer, the through-hole area per a hole is 0.02-0.18 mm, and the opening ratio of the through-hole is 1-10%.

Patch backing for water-based pasty preparation

A fabric for an airbag includes a synthetic fiber woven fabric in which at least one side thereof is coated with a synthetic resin. A range of 0.1 to 10 g/mof the synthetic resin is adhered to the synthetic fiber woven fabric having a cover factor of less than 2000 and a FR value of 55% or more. Air permeability of the fabric under a pressure difference of 100 kPa after adhesion is 0.01 to 1.00 L/cm/min. The synthetic resin can be a polyamide-based resin having a soft segment comprising a polyol with a number average molecular weight of 100 to 5000.

Fabric for airbag

A woven fabric for an airbag includes a synthetic fiber woven fabric having a cover factor of 2000 to 2500 in which at least one side thereof is coated with a synthetic resin. Air permeability of the woven fabric under a pressure difference of 100 kPa is 0.01 to 1.00 L/cm/min. A resin film is present at an upper part of a single yarn at a thickness of 2 &#x3bc;m or less on a central cross section of a weaving yarn part. A resin film is present at an upper part of a single yarn at a thickness of 2 to 30 &#x3bc;m on a cross section at a border between weaving yarn parts. The synthetic resin can be a polyamide-based resin that includes a polyether compound of a number average molecular weight of 100 to 5000 as a soft segment.

Woven fabric for airbag

A fabric for airbags which comprises a synthetic fiber woven fabric and synthetic thermoplastic resin applied on at least one side of the synthetic fiber woven fabric, characterized in that, by applying the synthetic thermoplastic resin, both edgecomb resistance and tear strength of the synthetic fiber woven fabric become 1.3 times or more as large as respective values of the synthetic fiber woven fabric before applying the synthetic thermoplastic resin. Preferably, the fabric for airbags has low air permeability and self-extinguishing property, and is capable of being repelletized with ease.

Fabric for airbags

A cushioning net structure having an apparent density of 0.005-0.20 g/cm.sup.3, which comprises three-dimensional random loops bonded with one another, wherein the loops are formed by allowing continuous fibers of 300 denier or more mainly comprising a thermoplastic elastomer to bend to come in contact with one another in a molten state and to be heat-bonded at most contact points, and a method for producing the net structure. The structure of the invention can provide unstuffy cushions superior in heat resistance, durability and cushioning property. The cushioning structure is advantageous in that it can be easily recycled.

Cushioning net structure and production thereof

There is disclosed a structured fiber material with a three-dimensional network structure containing non-elastic crimped short fibers (A) and three-dimensionally crimped composite fibers (B), the fibers (B) being partially interlocked with each other, in which contact portions the fibers (B) are partially heat-bonded with each other; the fibers (B) being partially wound around the fibers (A) at their contact points, in which contact portions the fibers (A) and (B) are partially heat-bonded with each other; and the material having an apparent density of 0.005 to 0.10 g/cm.sup.3. Also disclosed is a process for producing the structured fiber material.

Process of making structured fiber material

Structured fiber material comprised of composite fibers coiled around

A recyclable vehicular cushioning material which is thermoformed from a web composed of three-dimensionally crimped polyester fiber having a fineness lower than 45 denier per filament and an initial tensile strength (IS) higher than 30 g/d and heat-bonding fiber containing polyester elastomer, as heat-bonding component, which are mixed and dispersed and, if necessary, interlaced, said cushioning material having a layer whose bulk density is 0.02-0.06 g/cm.sup.3.

Recyclable vehicular cushioning material and seat

Growing community of inventors

Otsu, Japan

Hideo Isoda