Method of manufacturing a bonded body
AssigneesOrigin Electric Company, Limited, Teijin Limited
InventorsTakumi Kato, Kiyoshi Saito, Akio Komatsu
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Abstract
A method of obtaining a high-strength bonded body between composite materials, each containing a thermoplastic resin and carbon fibers, with a low current in a short period of time, wherein the bonded body is rarely susceptible to deformation such as warp. The method of manufacturing a bonded body, comprises the steps of: (i) preparing a plurality of composite materials, each containing a thermoplastic resin and discontinuous carbon fibers which are randomly oriented; (ii) overlapping the composite materials each other; (iii) sandwiching at least a part of the overlapped portion between a pair of electrodes; and (iv) applying electricity between the electrodes to weld together the thermoplastic resins with Joule heat.
Claims18
A method of manufacturing a bonded body, comprising the steps of:
- (i) preparing a plurality of composite materials, containing a thermoplastic resin and discontinuous carbon fibers which are randomly oriented;
- (ii) overlapping the composite materials each other;
- (iii) sandwiching at least a part of the overlapped portion between a pair of electrodes;
- and
- (iv) applying electricity between the electrodes to weld together the thermoplastic resins with Joule heat.
An apparatus for manufacturing a bonded body comprising overlapped plurality of composite materials containing a thermoplastic resin and discontinuous carbon fibers which are randomly oriented, comprising:
- (i) a first electrode in contact with the outermost surface layer of one of the overlapped composite materials;
- (ii) a second electrode in contact with the outermost surface layer of the other composite material;
- (iii) a power source for applying electricity between the first and second electrodes;
- (iv) a pressure mechanism connected to at least one of the first and second electrodes;
- and
- (v) a controller for controlling the bonding current and the energization time, wherein at least a part of the overlapped portion of the composite materials is sandwiched between the first electrode and the second electrode and electricity is applied between the electrodes while the composite materials are pressurized so as to weld together the thermoplastic resins with Joule heat.
A method for bonding a plurality of composite materials containing a thermoplastic resin and carbon fibers, by overlapping them each other and applying electricity to at least a part of the overlapped portion to weld together the thermoplastic resins, wherein the composite material contains a thermoplastic resin and discontinuous carbon fibers which are randomly oriented.
Dependencies are inferred from the claim text.