A method of producing a preformed pavement marking prior to application to paving on the ground comprises: providing a first sheet (10a) of thermoplastic pavement marking material; providing a second sheet (10b) of thermoplastic pavement marking material; positioning the first and second sheets (10a, 10b) next to each other; transferring energy to an energization zone (28) along an edge of at least one of said first and second sheets (10a; 10b), to locally liquefy a portion of the thermoplastic material of said at least one of the first and second thermoplastic pavement marking material sheets (10a, 10b) in the energization zone (28); and solidifying the liquefied thermoplastic of the energization zone (28) to form a bond between the first and second sheets (10a, 10b).

A method for fabricating wetsuit garment including wetsuits, boots and gloves for water sports uses, comprising preparation of at least a substantially elastic joining member made of hot melt adhesive, and joining at least two interconnected panels of rubber foam or sponge by the substantially elastic joining member to cover and seal the seam between the two interconnected panels for firmly bonding the two interconnected panels for making a strong, elastic and flexible wetsuit garment.

A laser-welded body includes at least three of resin members, which contain a thermoplastic resin including: a first resin member which is a laser-irradiated subject, has an absorbance a.sub.1 of 0.01 to 0.12; a second resin member which has an absorbance a.sub.2 of 0.1 to 0.9 and includes a butted part where ends of one or more resin members are brought into contact with each other; and a third resin member which has an absorbance a.sub.3 of 0.2 to 3.8, and the absorbances a.sub.2, a.sub.3 exhibited by the second resin member and the third resin member are attributed to the inclusion of nigrosine as a laser beam absorbent therein, and the resin members are overlapped in the above mentioned to form contacted parts at these interfaces, at least a part of the butted part and/or the contacted parts are laser-welded.

The present invention relates generally to coated abrasive articles, such as coated abrasive film belts having improved strength and durability, as well as methods of making and using said coated abrasive articles.

The invention relates to a system for producing a sealed connection of a press connector to a workpiece, in particular to a pipe, preferably to a plastic pipe, with a pressing tool for pressing a press connector and with a pressure tool for driving the pressing tool. The pressure tool is arranged to output a hydraulic pressure at a pressure generation point The pressing tool is arranged to receive a hydraulic pressure at a pressing location and to press a press connector accordingly. The pressure tool and the pressing tool are connected via a hydraulic pressure transmission connection, the pressure generation location and the pressing location being remote from each other. A corresponding method for producing a tight connection of a press connector to a workpiece, in particular to a pipe made of a flexible material, preferably a plastic pipe, as well as a press force translator and a press tool are also described.

Weld seam testing chain for testing a weld seam by means of ultrasound on two plastic tubes welded together at the ends, comprising standard chain links, wherein the standard chain links are hooked together to form the weld seam testing chain, and the chain can be lengthened or shortened individually, a sensor receptacle for accommodating the ultrasonic sensor, and an adjusting unit for the fine adjustment of the weld seam testing chain length, wherein the standard chain links have a hook on one side and a hook receptacle on the opposite side, thereby enabling the individual chain links to be hooked together.

A method of welding/joining corrugated pipe segments, an apparatus configured to weld/join corrugated pipe segments, and a method of circulating water are disclosed. The method of welding/joining corrugated pipe segments includes holding or securing an end of each of the corrugated pipe segments with a jig, and welding the ends of the corrugated pipe segments together. The jig includes at least two rings, each configured to receive one of the ends of the corrugated pipe segments, and a brace or connector connected to each of the two rings. The apparatus includes the jig, a welding ring configured to receive the ends of the corrugated pipe segments, a resistive heating coil for heating the welding ring, and a control circuit configured to control a temperature of the resistive heating coil and maintain the temperature of the resistive heating coil once a target temperature is reached.

A connection device for plastic pipe elements (1) which allows performing pre-assembly and being finally assembled without requiring skilled labor, having a pipe element (1) with at least one end, a plastic connection element (2) which is connected to an outer surface of the pipe element (1) through the end, which has a resistance wire (3) wound on the outer surface of the pipe element (1) itself.

There is provided a method of making a fluidic system that comprises assembling a fluidic system comprising a first plate, a second plate and a membrane disposed between the first plate and the second plate; applying laser energy to the fluidic system to cause the first plate, the second plate and the membrane to melt at bonding areas; and allowing the bonding areas to cool down such that the first plate, the second plate and the membrane are bonded together.

A hollow fiber membrane module 10 has a hollow fiber membrane bundle 11 and a housing case 15. The housing case 15 has first molding members 17 and a second molding member 18. At each first molding member, a tubular portion 19 and a nozzle portion 20 are integrally molded. The second molding member 18 has a tubular shape coaxially continuous from the tubular portion 19. Values obtained by dividing, by the wall thickness of the second molding member, the wall thicknesses of the housing case 15 at positions separated in the axial direction from a connecting position toward the first molding member 17 side by distances of 3 times and 5 times the wall thickness of the second molding member 18 are 1.0 to 1.3 and 1.0 to 1.5, respectively.