Patents
Literature
Hiro is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Hiro

32results about How to "Peel strength" patented technology

Printed wiring board and method for manufacturing the same

Provided is a method for manufacturing a printed wiring board, which can enhance the peel strength between an insulating layer and a conductive pattern by a two-step process, that is, a semi-hardening and full-hardening of the insulating layer. In the method for manufacturing the printed wiring board having one or more layers of a conductive pattern and an insulating pattern, an insulating pattern is formed on an insulating substrate, and at least one of the insulating substrate and the insulating pattern is semi-hardened. A conductive pattern is formed on the insulating substrate and / or the insulating pattern, thereby providing a stack structure. Then, a thermal treatment is performed on the stack structure to fully harden the semi-hardened insulating substrate and / or insulating pattern, and the conductive pattern is fired.
Owner:SAMSUNG ELECTRO MECHANICS CO LTD

Copper foil for printed wiring board, method for producing said copper foil, resin substrate for printed wiring board and printed wiring board

A copper foil for a printed wiring board, the copper foil being characterized by having, on at least one surface thereof, a roughed layer of the copper foil in which an average diameter at a particle root (D1) corresponding to a distance of 10% of a particle length from the root, is 0.2 μm to 1.0 μm, and a ratio of the particle length (L1) to the average diameter at the particle root (D1) is 15 or less when L1/D1. A copper foil for a printed wiring board, wherein a sum of area covered by holes on an uneven and roughened surface of a resin is 20% or more at a surface of the resin formed by laminating the resin and a copper foil for a printed wiring having a roughened layer and then removing the copper layer by etching. An object of the present invention is to develop a copper foil for a semiconductor package board in which the aforementioned phenomenon of circuit erosion is avoided without deteriorating other properties of the copper foil. In particular, an object of the present invention is to provide a copper foil for a printed wiring board and a producing method thereof, wherein a roughened layer of the copper foil can be improved to enhance the adhesiveness between the copper foil and a resin.
Owner:JX NIPPON MINING& METALS CORP

Production method of steel-plastic composite pipe

ActiveCN102774012AEliminates low longitudinal tensile capacityHigh peel strengthTubular articlesSteel beltPlane layer
The invention relates to a production method of a steel-plastic composite pipe, belonging to the field of steel-plastic composite pipes. The production method of the steel-plastic composite pipe is characterized by comprising the following steps of: under the traction of a traction apparatus, carrying out rust removal on a steel belt through a steel belt rust removal device and drying, and then placing the steel belt into a coating mould of an inner plastic coating layer extruder; under the traction of the traction apparatus, pressing the cooled and formed steel belt on a strip to obtain the waveform of a designed structural wall pipe; under the action of a tractor, placing the waveform-pressed steel belt into an extruder mould and forming a plane layer plastic which covers trough of the steel belt at the inner layer of the steel belt; placing the steel belt into a bending device and lapping and welding the steel belt with the edge of the coating strip; coating the weld joints by using inner and outer weld joint coating extruders; and cutting to obtain the finished pipe. In the traditional steel belt strengthened polyethylene helically corrugated pipe, steel belts are mot continuously strengthened in the longitudinal direction; and through continuous welding, the helically corrugated pipe can be strengthened by the steel belts in the longitudinal direction, so that the problem of low longitudinal tension resistance of the original products is eliminated.
Owner:山东金诚联创管业股份有限公司

Copper foil for printed wiring board, method for producing said copper foil, resin substrate for printed wiring board and printed wiring board

A copper foil for a printed wiring board, the copper foil being characterized by having, on at least one surface thereof, a roughed layer of the copper foil in which an average diameter at a particle root (D1) corresponding to a distance of 10% of a particle length from the root, is 0.2 μm to 1.0 μm, and a ratio of the particle length (L1) to the average diameter at the particle root (D1) is 15 or less when L1 / D1. A copper foil for a printed wiring board, wherein a sum of area covered by holes on an uneven and roughened surface of a resin is 20% or more at a surface of the resin formed by laminating the resin and a copper foil for a printed wiring having a roughened layer and then removing the copper layer by etching. An object of the present invention is to develop a copper foil for a semiconductor package board in which the aforementioned phenomenon of circuit erosion is avoided without deteriorating other properties of the copper foil. In particular, an object of the present invention is to provide a copper foil for a printed wiring board and a producing method thereof, wherein a roughened layer of the copper foil can be improved to enhance the adhesiveness between the copper foil and a resin.
Owner:JX NIPPON MINING & METALS CORP

Nonaqueous electrolyte secondary battery and method of manufacturing nonaqueous electrolyte secondary battery

A nonaqueous electrolyte secondary battery includes a positive electrode, a negative electrode having, on a surface thereof, a negative electrode mixture layer containing a negative electrode active material, a thickening agent and a binder, and a separator. The positive electrode and the negative electrode are coiled together with the separator therebetween. The negative electrode active material has an average particle size of at least 5 μm and not more than 20 μm and has a fines content, defined as the cumulative frequency of the negative electrode active material having a particle size of 3 μm or less, of at least 10% and not more than 50%. The thickening agent has a 1.0% aqueous solution viscosity of at least 4,980 mPa·s. The negative electrode mixture layer is in an unpressed state.
Owner:TOYOTA JIDOSHA KK
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products