Abrégé

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.

Classes IPC  ?

• H04R 7/02 - Membranes pour transducteurs électromécaniquesCônes caractérisés par la structure

Abrégé

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.

Classes IPC  ?

• H05K 9/00 - Blindage d'appareils ou de composants contre les champs électriques ou magnétiques

Produits et 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.

Produits et 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

Produits et 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.

Abrégé

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.

Classes IPC  ?

• B32B 5/26 - Produits stratifiés caractérisés par l'hétérogénéité ou la structure physique d'une des couches caractérisés par la présence de plusieurs couches qui comportent des fibres, filaments, grains ou poudre, ou qui sont sous forme de mousse ou essentiellement poreuses une des couches étant fibreuse ou filamenteuse un autre couche également étant fibreuse ou filamenteuse
• H05K 9/00 - Blindage d'appareils ou de composants contre les champs électriques ou magnétiques
• B32B 7/025 - Propriétés électriques ou magnétiques

Abrégé

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.

Classes IPC  ?

• B32B 5/26 - Produits stratifiés caractérisés par l'hétérogénéité ou la structure physique d'une des couches caractérisés par la présence de plusieurs couches qui comportent des fibres, filaments, grains ou poudre, ou qui sont sous forme de mousse ou essentiellement poreuses une des couches étant fibreuse ou filamenteuse un autre couche également étant fibreuse ou filamenteuse
• D04H 1/498 - Non-tissés formés uniquement ou principalement de fibres coupées ou autres fibres similaires relativement courtes à partir de voiles ou couches composés de fibres ne possédant pas des propriétés cohésives réelles ou potentielles les voiles ou couches étant renforcées par des moyens mécaniques, p. ex. par roulage par aiguilletage ou opérations similaires pour provoquer l'enchevêtrement des fibres enchevêtrement des couches de non-tissés
• G10K 11/16 - Procédés ou dispositifs de protection contre le bruit ou les autres ondes acoustiques ou pour amortir ceux-ci, en général
• G10K 11/168 - Sélection de matériaux de plusieurs couches de matériaux différents, p. ex. sandwiches

Produits et 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.

Produits et 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

Produits et services

Non-woven textile fabrics.

Produits et services

Non-woven textile fabrics

Abrégé

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.

Classes IPC  ?

• B32B 7/02 - Propriétés physiques, chimiques ou physicochimiques
• D04H 1/4242 - Fibres de carbone
• C08J 5/24 - Imprégnation de matériaux avec des prépolymères pouvant être polymérisés en place, p. ex. fabrication des "prepregs"
• C08J 5/04 - Renforcement des composés macromoléculaires avec des matériaux fibreux en vrac ou en nappes
• B29B 15/10 - Revêtement ou imprégnation
• D04H 1/4291 - Famille des oléfines
• D04H 1/4334 - Polyamides

Abrégé

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%.

Classes IPC  ?

• C08J 5/24 - Imprégnation de matériaux avec des prépolymères pouvant être polymérisés en place, p. ex. fabrication des "prepregs"

Abrégé

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.

Classes IPC  ?

• B32B 5/26 - Produits stratifiés caractérisés par l'hétérogénéité ou la structure physique d'une des couches caractérisés par la présence de plusieurs couches qui comportent des fibres, filaments, grains ou poudre, ou qui sont sous forme de mousse ou essentiellement poreuses une des couches étant fibreuse ou filamenteuse un autre couche également étant fibreuse ou filamenteuse
• A61F 13/02 - Bandages ou pansements adhésifs
• B32B 7/02 - Propriétés physiques, chimiques ou physicochimiques
• D04H 1/45 - Non-tissés formés uniquement ou principalement de fibres coupées ou autres fibres similaires relativement courtes à partir de voiles ou couches composés de fibres ne possédant pas des propriétés cohésives réelles ou potentielles les voiles ou couches étant renforcées par des moyens mécaniques, p. ex. par roulage par formation de mailles ou de points imbriqués entre un certain nombre de fibres