Provided is a diaphragm for a speaker, the diaphragm including a carbon fiber and a resin, wherein the carbon fiber has an average length of 20 mm or more.
It is provided that an electromagnetic wave shielding material that can effectively shield a low frequency magnetic field. An electromagnetic wave shielding material comprising: a layer A containing an inorganic fiber; and a layer B containing a metal fiber, wherein at least one of the layer A and the layer B contains a resin.
17 - Rubber and plastic; packing and insulating materials
24 - Textiles and textile goods
Goods & Services
Carbon fiber reinforced plastic materials, semi-processed,
for use in manufacture; fiber reinforced plastic boards for
use in manufacture; plastic substances, semi-processed;
plastic material in extruded form for use in production;
fibrous plastic wadding materials for use in manufacture;
semi-processed plastic substances in the form of pellets,
rods, foils, foams, fibers, films and sheets;
electromagnetic shielding materials made of non-woven
textile; electromagnetic shielding materials; electrical
insulating materials; insulating felt; insulating fabrics;
insulating materials; plastic fibers, other than for textile
use; chemical fibers, other than for textile use; carbon
fibers, other than for textile use. Non-woven textile fabrics; felt.
17 - Rubber and plastic; packing and insulating materials
24 - Textiles and textile goods
Goods & Services
Carbon fiber-reinforced plastic materials, semi-processed, for use in manufacture other than for textile use; fiber-reinforced plastic boards for use in manufacture; plastic substances, semi-processed; plastic material in extruded form for use in production; fibrous plastic wadding materials for use in manufacture as synthetic padding and stuffing materials; semi-processed plastic substances in the form of pellets, rods, foils, foams, fibers, films and sheets; electromagnetic interference (EMI) shielding composites made of non-woven textile for use in further manufacture; electromagnetic interference (EMI) shielding intermediate material made of non-woven textile in sheet form for use in further manufacture of EMI shielding composites for use in further manufacture; electrical insulating materials; insulating felt; insulating fabrics; insulating materials; plastic fibers, other than for textile use; chemical fibers, other than for textile use; carbon fibers, other than for textile use Non-woven textile fabrics; felt
17 - Rubber and plastic; packing and insulating materials
24 - Textiles and textile goods
Goods & Services
Fiber reinforced plastic boards for use in manufacture;
plastic substances, semi-processed; plastic material in
extruded form for use in production; fibrous plastic wadding
materials for use in manufacture; semi-processed plastic
substances in the form of pellets, rods, foils, foams,
fibers, films and sheets; electrical insulating materials;
insulating felt; insulating fabrics; insulating materials;
plastic fibers, other than for textile use; chemical fibers,
other than for textile use. Non-woven textile fabrics; felt.
6.
ELECTROMAGNETIC WAVE SHIELDING MATERIAL AND METHOD FOR PRODUCING SAME
Provided is an electromagnetic wave shielding material capable of effectively shielding against a low-frequency magnetic field. This electromagnetic wave shielding material is characterized by: comprising layer A containing inorganic fibers and layer B containing metal fibers; and at least one of layer A and layer B containing resin.
B32B 5/26 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by the presence of two or more layers which comprise fibres, filaments, granules, or powder, or are foamed or specifically porous one layer being a fibrous or filamentary layer another layer also being fibrous or filamentary
H05K 9/00 - Screening of apparatus or components against electric or magnetic fields
The present invention addresses the problem of providing a sound-absorbing material having excellent sound absorption performance in a wide range from the low frequency range to the high frequency range, and a method for producing the sound-absorbing material. Provided is a sound-absorbing material that is a layered structure including a first fiber layer and a second fiber layer, wherein the sound-absorbing material is characterized in that the relationship between the average pore diameter (D) (μm) in the first fiber layer and the air permeability (G) in the layered structure (cm3/cm2•sec) satisfies 1.0 ≤ D/G ≤ 10, the relationship between the air permeability (G) (cm3/cm2•sec) in the layered structure and the coefficient of variation (B) of the pore diameter in the first fiber layer satisfies 5.0 ≤ G/B ≤ 25, and the first fiber layer is arranged on the sound source side. Also provided is a method for producing the sound-absorbing material that has an air permeability (G) of 1.5 cm3/cm2•sec or more and no more than 18.0 cm3/cm2•sec and is a layered structure with the first fiber layer arranged on the sound source side, in which the method includes a step for forming the first fiber layer by a spunlace method and a step for layering and integrating at least the first fiber layer and the second fiber layer by a needle punch method and forming the layered structure.
B32B 5/26 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by the presence of two or more layers which comprise fibres, filaments, granules, or powder, or are foamed or specifically porous one layer being a fibrous or filamentary layer another layer also being fibrous or filamentary
D04H 1/498 - Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres entanglement of layered webs
G10K 11/16 - Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
G10K 11/168 - Plural layers of different materials, e.g. sandwiches
17 - Rubber and plastic; packing and insulating materials
24 - Textiles and textile goods
Goods & Services
Carbon fiber reinforced plastic materials for use in
manufacture; fiber reinforced plastic boards for use in
manufacture; plastic substances, semi-processed; plastic
material in extruded form for use in production; fibrous
plastic wadding materials for use in manufacture;
semi-processed plastic substances in the form of pellets,
rods, foils, foams, fibers, films and sheets;
electromagnetic shielding materials made of non-woven
textile; electromagnetic shielding materials; electrical
insulating materials; insulating felt; insulating fabrics;
insulating materials; plastic fibers, other than for textile
use; chemical fibers, other than for textile use; carbon
fibers, other than for textile use. Non-woven textile fabrics; felt.
17 - Rubber and plastic; packing and insulating materials
24 - Textiles and textile goods
Goods & Services
Carbon fiber reinforced plastic materials in extruded form for use in further manufacturing; fiber reinforced plastic boards for use in further manufacturing; plastic substances, semi-processed; fibrous plastic wadding materials in the nature of plastic sheets for use in further manufacturing; semi-processed plastic substances in the form of pellets, rods, foils, foams, fibers, films and sheets; conductive tape for electromagnetic radiation shielding in electronic products made of non-woven textile; insulating materials for electromagnetic shielding of sensor cases, made of non-woven textile; insulating felt for use in further manufacturing; insulating fabrics; insulating materials Non-woven textile fabrics; felt
The prepreg sheet, which is an intermediate of molded articles, has a nonwoven fabric having carbon fibers and thermoplastic resin fibers, wherein the prepreg sheet has a thickness expansion rate of 250% or less after being heated for 90 seconds at a temperature of the melting point of the thermoplastic resin fiber to the melting point+100° C.
Provided is a prepreg sheet with which it is possible to suppress expansion in thickness even if heated during molding, which enables smooth insertion into a die, and with which it is possible to obtain a desired molded article. A prepreg sheet which is an intermediate for a molded article and which is made from a non-woven cloth including carbon fibers and thermoplastic resin fibers, wherein the thickness expansion coefficient when heated for 90 seconds to a range of temperatures from the melting point of the thermoplastic resin fibers to the melting point + 100°C does not exceed 250%.
A fabric which contains X-ray-detectable materials and is highly sensitive in detection with an X-ray detector; and an adhesive plaster for X-ray detection which employs the fabric containing X-ray-detectable materials. Even when the fabric is used as, e.g., the absorbent pad of an adhesive plaster, it does not impair the stretchability of the adhesive plaster. Also provided is a process for producing the adhesive plaster for X-ray detection using the fabric containing X-ray-detectable materials. The adhesive plaster for X-ray detection comprises: a pressure-sensitive adhesive protective member comprising a base and a pressure-sensitive adhesive layer; and an absorbent pad disposed in a given position on the pressure-sensitive adhesive protective member. The absorbent pad is constituted of an X-ray-detectable-material-containing fabric which comprises a fabric and X-ray-detectable materials wholly or partially covered with a covering material, the X-ray-detectable materials being disposed in the fabric at given intervals.
B32B 5/26 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by the presence of two or more layers which comprise fibres, filaments, granules, or powder, or are foamed or specifically porous one layer being a fibrous or filamentary layer another layer also being fibrous or filamentary
B32B 7/02 - Physical, chemical or physicochemical properties
D04H 1/45 - Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by forming intermeshing loops or stitches from some of the fibres
