There is provided a method for producing a metal-resin composite including a metal member and a resin member which are joined together, the resin member containing at least a thermoplastic resin. The method includes a step of joining together the resin member and the metal member by melting the resin member with the frictional heat generated in the surface of the metal member on its side opposite to the resin member in a state where the metal member and the resin member are superposed. The melting point of the thermoplastic resin is 260° C. or more.

Provided is a composite material for a wind turbine blade, the composite material including a plurality of rigid elements and plurality of flexible elements, wherein each flexible element is arranged between two rigid elements and is connected thereto such that the rigid elements are flexibly connected to each other by the flexible elements. The flexibility of the composite material can be achieved by using the interspaces between the rigid elements. Therefore, when the composite material is placed on a curved surface, hollow spaces between the rigid elements may be reduced or avoided.

Methods of producing polymer-metal hybrid components that are bonded by C—O-M bonds at the interface using at least one of the hot pressing, rolling, and injection molding methods to create chemical bond formation conditions at the polymer and metal interface. When the thermal cycle and compressive pressure specified herein is combinationally created at the polymer and metal interfaced, strong C—O-M bonds forms at the interface and strongly bonds the metal and polymer together through the reaction carbonyl groups (C═O) in polymer and the metal surface. For polymers lacking enough carbonyl groups, new functional groups can be in-situ generation through introducing distributed air pockets at the polymer-metal interface for forming 3-dimensional distributed C—O-M bonds at the interface.

A metal-resin joining method of joining a metal member to a composite material member including a fiber reinforced plastic composite material includes an applying step of applying a first adhesive that is a thermosetting adhesive to a first region between the metal member and the composite material member, and applying a second adhesive that is a thermosetting adhesive to a second region between the metal member and the composite material member, a provisional bonding step of irradiating a first irradiation region of the metal member opposed to the first region with a laser light, and heating and curing the first adhesive to provisionally bond the metal member and the composite material member together, and a main bonding step of curing the second adhesive after the provisional bonding step to bond the metal member and the composite material member together.

A method for joining a metal material element to a plastic material element, in particular a composite material including a plastic matrix reinforced with fibers for use in the construction of motor-vehicle components. The method involves providing one or more slots in a portion of the plastic material element. For each slot, a corresponding tab is provided in the metal material element, having a shorter width and length than a width and length of the slot. The metal material and plastic material elements are arranged in a position of mutual coupling where each tab is inserted through the corresponding slot and has an end portion protruding beyond said portion of the plastic material element. A laser beam is directed above the protruding end portion, so as to locally melt the metal material of each tab and create an enlarged head on each tab that is welded above the plastic material element.

There is provided a method for producing a metal-resin composite including a metal member and a resin member which are joined together, the resin member containing at least a thermoplastic resin. The method includes a step of joining together the resin member and the metal member by melting the resin member with the frictional heat generated in the surface of the metal member on its side opposite to the resin member in a state where the metal member and the resin member are superposed. The melting point of the thermoplastic resin is 260° C. or more.

There is provided a method for producing a metal-resin composite which includes a resin member and a metal member having a roughened surface in at least a portion of the surface thereof, the resin member being joined so as to be in contact with at least a portion of the roughened surface. The method includes a step of joining the resin member and the metal member by melting the resin member with the frictional heat generated in the surface of the metal member on its side opposite to the resin member in a state where the metal member and the resin member are superposed. The method includes making adjustment so that when the roughened surface is measured at arbitrary five points by using a confocal microscope according to ISO 25178, the developed area ratio (Sdr) is 5 or more in terms of number-average value.

Liner having an induction heat sealable layer for sealing to a rim of a container, and a pull tab for ease of removal of the liner from the container rim. An insert is disposed between multilayer upper and lower components, has a heat bondable polyolefin layer that is thermally laminated to polyolefin layers of the upper and lower components, forming a pull tab between the integrated polyolefin layers. The resulting composite resists delamination and can be formed in a single thermal lamination step, avoiding the multiple lamination steps, associated high equipment costs, and complex layer constructions of the prior art.

A method for manufacturing a beverage capsule with an outer sealing ring comprised of elastic material involves the following steps: (a) providing a capsule body with a peripheral, flange-like edge for attaching a sealing film; (b) providing a sealing ring comprised of elastic material and adjusted to the flange-like edge; (c) placing the sealing ring and the capsule body in a capsule mount of a sealing device for sealing the capsule body with the sealing film, with the sealing ring arranged between the capsule mount and the flange-like edge of the capsule body; (d) filling the capsule body with a beverage substrate; and sealing the capsule body with the sealing film and simultaneously fastening the sealing ring to the flange-like edge using the sealing device.

A method of bonding a first object to a second object includes the steps of: providing the first object including thermoplastic material in a solid state, providing the second object including a proximal surface, applying a mechanical pressing force and a mechanical excitation capable to liquefy the thermoplastic material until a flow portion of the thermoplastic material is flowable and penetrates into structures of the second object, and stopping the mechanical excitation and letting the thermoplastic material resolidify to yield a positive-fit connection between the first and the second object. The second object has a region of low density, wherein the protrusion penetrates the region of low density at least partly before the thermoplastic material is made flowable, and wherein the first object includes a protruding portion after the step of letting the thermoplastic material resolidify, the protruding portion at least partly penetrates the region of low density.