A repair method for a workpiece of a plastics material is provided, wherein an induction heating apparatus is positioned at a repair region of the workpiece. The induction heating apparatus comprises a magnetic field generating device and a heat source. The heat source is arranged between the magnetic field generating device and the repair region. A repair material is positioned on the repair region and heated by way of the heat source. The heat source is inductively heated by the magnetic field generating device. A temperature (T) is measured by which an application of heat to the repair material by the heat source is characterized. The temperature (T) is controlled by means of a control device. The control of the temperature (T) by the control device occurs according to a temperature profile specification, which has a heating region and a working region following the heating region.

A tube-in-tube assembled parison for preparation of an elongated medical device. The parison if formed by assembling in tube-in-tube fashion a first tube of orientable polymer material and a second tube formed of orientable polymer material disposed around the first tube, with an adhesive tie layer disposed between the first and second tubes. The tubes are brought into contact to form a unitary parison. The adhesive may allow movement between the polymer layers during balloon blowing. The first tube, or the second tube, or both, may have been longitudinally pre-stretched after formation thereof but before assembly of the parison.

Systems and methods of constructing a thermoplastic component include joining a thermoplastic skin to a thermoplastic core by introducing heat at an interface of each of the thermoplastic skin and the thermoplastic core to at least partially melt the thermoplastic skin to a thermoplastic core at the interfaces, applying pressure to at least one of the thermoplastic skin and the thermoplastic core to sandwich the elements, and cooling the interfaces below the melting point of each of the thermoplastic skin and the thermoplastic core to consolidate the thermoplastic skin and the thermoplastic core into a unitary thermoplastic component. An optional thermoplastic film may be disposed between the thermoplastic skin and the thermoplastic core. The thermoplastic skin may be joined to the thermoplastic core to form an intermediate thermoplastic component prior to joining the thermoplastic skin to the intermediate component.

A method for bonding components to each other according to this invention bonds, to a plate-shaped member or a shaft, an ultraviolet-curable adhesive cured by irradiation with ultraviolet rays and a wavelength conversion element which emits ultraviolet rays by irradiation with X-rays. The plate-shaped member is brought into contact with the shaft through a bonding layer formed by the ultraviolet-curable adhesive and the wavelength conversion element. The X-rays are transmitted through the plate-shaped member or the shaft to the bonding layer located between the plate-shaped member and the shaft to cure the ultraviolet-curable adhesive.

A heating apparatus for heating a reinforcing layer of a composite material structure is disclosed. The heating apparatus includes a housing having a base and a housing body defining a housing interior space. A radiant heating assembly is disposed within the housing and configured to transfer radiant heat to the reinforcing layer. Additionally, a convection heating assembly is formed within the housing including at least one convection assembly gas passage. The heating apparatus further includes a convection assembly gas outlet coupled to the convection assembly gas passage and a convection assembly gas flows from the convection assembly gas outlet. The convection assembly gas flows along to heat the convection assembly gas. The heating apparatus further includes a redirection gas passage coupled to a redirection nozzle formed at a convection heat application point. A redirection gas flows from the redirection nozzle to direct the convection assembly gas towards the reinforcing layer.

A method for manufacturing an inflatable mattress includes: Step 1, introducing a plastic material into an extruding machine; Step 2, operating the extruding machine to extrude the plastic material; Step 3, forming a tubular body in the form of a cylinder having a wall having a predetermined thickness; Step 4, cutting the cylindrical tubular body to form seamless tubular strips; and Step 5, connecting two opposite side portions of each of the seamless tubular strips to an upper layer and a lower layer respectively, with the seamless tubular strips being spaced from each other by a predetermined distance. An inflatable mattress so manufactured includes: an upper layer and a lower layer, of which peripheral edges are connected to provide the inflatable mattress with an internal space; and tubular strips arranged in the internal space and having opposite side portions respectively connected to the upper layer and the lower layer.

An interpenetrating polymer network (IPN) adhesive comprises an acrylated polymer system curable by radiation, and a flexible epoxy system thermally curable after the acrylated polymer system is cured.

A conveyance belt welding apparatus includes: a contact part including a contact surface configured to come into contact with the conveyance belt; a first electrode; a second electrode disposed surrounding the first electrode in plan view from a first direction toward the conveyance belt; a first conductor including a coil and configured to electrically couple a transmission line configured to transmit a high-frequency voltage and the first electrode; and a second conductor configured to electrically couple the transmission line and the second electrode. The first electrode and the second electrode weld the conveyance belt by generating electromagnetic waves in response to application of a high-frequency voltage.

An additional chamber to watercraft that adds both volume and curvature to other compartments or components of the watercraft that are essentially flat is described. The additional chamber provides for modular construction of watercraft for creating volumetric space as well as a curved surface to the outer portion of the watercraft. The chamber advantageously increases the aesthetic appeal of the watercraft as well as provides a surface on which water is discouraged from pooling or collecting on. Various watercrafts having such a chamber are also described.

A method comprising providing a polymeric substrate having a melting point of from about 130 C. to about 190 C., and locating a material layer onto the substrate, wherein the material layer comprises one or more polymeric materials that liquefy upon exposure to temperatures of at least about 100 C., to blend with a softened portion of the polymeric substrate. Upon exposure of one or more of the substrate and the material layer to a stimulus, the temperature is increased in a predetermined temperature zone of one or more of the substrate and material layer to cause blending of the one or more polymeric materials of the material layer with the softened portion of the polymeric substrate.