A roller for compressing protective sheeting of polymer material around a pipeline rotates about a given or designated axis of rotation and has a shaft; and a first tubular portion which extends about the shaft and varies in elasticity along the given or designated axis of rotation; more specifically, the first tubular portion is of greater elasticity at the ends of the roller than at the center of the roller.

The invention provides a method of manufacturing a pouch for holding therein a liquid, comprising providing a front and back layer, locally bonding them together to create an inner space, forming a pour channel, by locally bonding the layers together to form bonds defining boundaries of the pour channel, wherein the forming of the pour channel is carried out by providing a heating device having a plurality of heating elements arranged in a grid-like manner, forming a heating surface, each of the heating elements being individually operable, operating the heating device such that heating elements which are required for creating the boundaries are operated and thereby heated, and bringing the heating surface into contact with the front layer or back layer, so as to locally bond together the front layer and the back layer so as to form the bonds defining the boundaries of the pour channel.

To achieve universal welding of thermoplastic workpiece parts with simple equipment, an infrared light transmission welding method is disclosed in which simple polychromatic, incoherent infrared light is generated by a simple infrared light source and is directed through a first workpiece part to a weld point for the purposes of connection to a second workpiece part. In particular, the infrared light is directed through a transparent bracing element.

A vibration welding device 40 includes: a vibration welding mold that is configured including an upper mold and a lower mold divided in an up-down direction, that is fitted with a first component and a second component forming an elongated shape having a bent portion, and that is disposed with length directions of the first component and the second component along a left-right direction; plural first mold divisions that configure one of the upper mold or the lower mold, and that are divided in the left-right direction; a pressing device that is coupled to each of the plural first mold divisions, and that applies pressure to the first mold divisions; and a vibration device that is coupled to each of the plural first mold divisions, and that vibrates the first mold divisions.

A method and apparatus for joining parts. A plurality of conformable induction coils embedded in a number of elastomeric sheets is positioned relative to a first composite part of the parts and a second composite part of the parts. A magnetic field is generated with the plurality of conformable induction coils. The magnetic field is configured to generate heat in a magnetically permeable material at a joint location. The heat joins the first composite part and the second composite part to each other.

A method and apparatus for joining parts. A plurality of conformable induction coils embedded in a number of elastomeric sheets is positioned relative to a first composite part of the parts and a second composite part of the parts. A magnetic field is generated with the plurality of conformable induction coils. The magnetic field is configured to generate heat in a magnetically permeable material at a joint location. The heat joins the first composite part and the second composite part to each other.

Each of a plurality of pressure rolls is displaced around the shaft member and pressurizes the tire constituent member. Each of a plurality of supporting parts supports the pressure roll rotatably from the inside of the pressure roll and is displaced integrally with the pressure roll. A plurality of pressure holes are formed in a plurality of points of the shaft member corresponding to positions of the plurality of pressure rolls so as to extend in the pressurization direction for the tire constituent member. Each of a plurality of moving members projects in the pressurization direction from the pressure hole so as to pressurize the pressure roll. Each of a plurality of supply pipes is arranged in the inside space around the shaft member so as to each supply the pressurizing medium for pressurizing the moving member into the pressure hole.

A joining method using heat fusion includes layering a first joining body and a second joining body having a smaller plane area than the first joining body; and performing heating and pressurization with a heater from a side of the second joining body. The method further includes a resin dam interposed between the second joining body and the heater. The resin dam includes a base body having one of front and back surfaces in contact with the heater and the other of front and back surfaces in contact with the second joining body; and a dam main body extending from a circumferential edge of the base body in a direction away from the base body and having a shape control surface facing a side surface of the second joining body.

A transmission welding apparatus for welding thermoplastic resin material parts includes at least one heat source emitting thermal radiation, and at least one pressure device adapted to apply a welding pressure on the material parts. The at least one pressure device includes at least one pressure generator for supplying a pressure force, at least one pressure plate which is permeable to the thermal radiation and which is adapted to introduce the pressure force into the material parts, and at least one pressure transmission system for transferring the pressure force to the pressure plate, such that the at least one pressure plate is segmented into a plurality of plate segments which are arranged movable relative to one another.

A sonotrode for an ultrasonic welding apparatus, having a lower portion of length u and an upper portion of length o, the upper portion and the lower portion adjacent on a longitudinal axis of the sonotrode, and the total length of the sonotrode in the direction of the longitudinal axis being u+o, the lower portion having a sealing surface oriented perpendicular to the longitudinal axis, the sealing surface contacting a material to be processed. The lower portion has a slot, wherein the slot extends from the sealing surface to a side of the lower portion opposing the sealing surface, such that the lower portion of the sonotrode is divided into a plurality of segments which lie adjacent each other in a direction perpendicular to the longitudinal axis.