A method and apparatus for assembling a high purity liquid distribution system is described. A distal end portion of the tube is heated then pushed over a sleeve so that the distal end portion can have a shrink seal fit over the sleeve to mitigate accidental or inadvertent pull out of the tube from a fitting. Other benefits are also achieved such as minimal flow restriction of the liquid flowing through the joint and the tube.

A protective guard for a hand, finger or thumb includes a first thermoplastic layer heat welded to second thermoplastic layer. The second thermoplastic layer has a thickness that is greater than the thickness of the first thermoplastic layer.

Fluted core sandwich panels are joined together to form a composite structure. Variations in panel ends are accommodated by a core stiffener insert installed in a joint between ends of the panels.

A fiber-reinforced thermoplastic resin member welding method includes: heating, by a heating unit, a welding target portion in which plural fiber-reinforced thermoplastic resin members layered on top of each other, each of the plural fiber-reinforced thermoplastic resin members including thermoplastic resin as a main composition, and the thermoplastic resin including reinforcing fibers; applying pressure, by a pressure applying unit, to the welding target portion; and cooling, by a cooling unit, at least a surface of the welding target portion at the same time as when the welding target portion is being heated by the heating unit or after the welding target portion has been heated by the heating unit.

A fitting for use in fusion welding mating thermoplastic components includes a weld bead chamber to capture and conceal a bead formed as a result of the fusion weld. The weld bead chamber integrates the bead into the fitting so that the joined parts have a finished look without mechanical polishing or grinding of the completed piece. A stop ledge included in the weld bead chamber prevents over insertion of a pipe or other component into the fitting. A view window in the fitting permits inspection of the finished bead.

A fiber-reinforced plastic component includes a three-dimensional component plastic member and at least one reinforcement fiber rod. The three-dimensional component plastic member determines at least parts of a shape of the plastic component. The three-dimensional component plastic member has at least one void which is open to at least one side and in which the at least one reinforcement fiber rod is placed.

A joining method of joining two pieces of subjects to be joined together, the subjects being a first member and a second member that has a joint insertion portion in which the first member is inserted, the method including: heating the second member that is set in an expansion restricting member and in which the first member is inserted to the joint insertion portion to first temperature to cause the second member to have thermal expansion and thereby causing the joint insertion portion to have plastic deformation in a direction in which a diameter shrinks with mechanically restricting thermal expansion of the second member by an inner surface of the expansion restricting member; and cooling the second member after the heating to join the first member and the second member together.

A method of welding a gasket to a spigot portion of a pipe section is described. The method includes supporting the gasket in a recess on the spigot portion of the pipe section. The gasket includes a seating portion and a sealing portion. The sealing portion includes a first shoulder portion and a second shoulder portion. A first bonding portion extends from the first shoulder portion and a second bonding portion extends from the second shoulder portion. The first bonding portion and the second bonding portion are provided to bond the gasket to the spigot portion. The method further includes heating a portion of the gasket and an adjacent surface of the spigot portion and applying a force onto the portion of the gasket following the application of heat to fuse the gasket onto the spigot portion.

A method for bonding a first composite material and a second composite material together includes a step in which a first bonding region of the first composite material is prepared to be maintained in a softened state. In another step, a first non-bonding region of the first composite material is heated to be put into a cured state. The first bonding region is put into a heatable state, and the first bonding region is heated to be put into a semi-cured state. The first bonding region having been put into the semi-cured state is pressed in contact with a second bonding region of the second composite material that becomes a softened state or a semi-cured state. The first bonding region and the second bonding region having been brought into contact with each other and pressed in the contacting and pressing step are heated to be put into a cured state.

A porous body belt includes a body to be connected including a porous body, a connecting material A that is disposed on the body to be connected by spanning a gap between end portions of the body to be connected and contains a fiber A and a resin material A, and the resin material A penetrates at least a part of a void portion of the porous body of the body to be connected, and bonds the end portions of the body to be connected to each other.