A method for forming a geomembrane liner testable for leaks by securing adjacent panels together with the conductivity of the lower surface of an overlying panel broken along a line adjacent the panel overlapping edge, and the overlapping edges sealed along the line. A heat welder has slots for the overlapping panel edges, with a heated wedge between the slots and having a projection to break the conductivity of the overlying panel bottom surface as it passes the wedge. The slots merge to press the liner edges together to heat weld them along the line of broken conductivity as the welder is moved along the panel edges.

Provided is a joint treatment method that enables smooth joint treatment without damaging the ultraviolet radiation curable resin formed on the interior sheet surface. The joint treatment method is for joining a butt joint portion of interior sheets, the protective layer being formed as a surface layer of each of the interior sheets. The method includes: (1) a step of injecting a joint treatment agent, which has no dissolving ability with respect to at least the protective layer, into the butt joint portion; and (2) a step of attaching, before the injected joint treatment agent is cured, an adhesive tape so as to straddle the butt joint portion such that the tape is in contact with the protective layer and the joint treatment agent present in the butt joint portion.

A mat unit is formed from at least two layers ultrasonically welded together. Each layer is individually formed from non-vinyl nontoxic thermoplastic elastomer (TPE) material. In ultrasonically joining the two layers together, there is no need to use additional materials, such as adhesive (i.e., chemical attachment) or stitched thread (i.e., mechanical attachment) to form the joint/weld point. Once formed from the two layers, the mat unit has four quadrants and a plurality of longitudinal ribs integrally formed in the first layer positioned in the first and third quadrants, and a plurality of transverse ribs integrally formed in the first layer positioned in the second and fourth quadrants. Additionally, there are a plurality of longitudinal ribs integrally formed in the second layer positioned in the second and fourth quadrants, and a plurality of transverse ribs integrally formed in the second layer positioned in the first and third quadrants.

The invention relates to a heat-fusible weld seam for joining ground coating members, comprising a copolymer selected from the group of polymers containing acrylic acid, methacrylic acid or maleic anhydride, a polyethylene and a copolyamide.

A method includes processing multiple macromolecular staples to successively produce a macromolecular sheet body, multiple silks and multiple sheet particles. The macromolecular sheet body contains multiple district camouflages and is processed by edge cutting to form multiple color strips. The color strips, the silks and the sheet particles are processed and attached to the surface of the macromolecular sheet body, so that the surface of the macromolecular sheet body forms the district camouflages, the thread camouflages and the spot camouflages. Finally, the macromolecular sheet body is vulcanized or solidified in a foam molding zone, to form an elastic mat with a mixed color type.

First and second composite members each containing first discontinuous fibers of fiber length La, are placed such that end surfaces thereof face each other at an interval of first length L1. Ends of the first and second composite members are melted over a second length L2 from the end surfaces. A connecting member containing second discontinuous fibers of fiber length Lb, is melted and placed to bridge a space between the ends, to form a stack. The stack is pressed, whereby the melted connecting member and the melted end portions flow into the space between the end surfaces to form a mixture portion. The mixture portion is cooled and solidified to produce a fiber-reinforced resin bonded body. The first length L1 is equal to or more than of the fiber length Lb, and the second length L2 is equal to or more than the fiber length La.

A dual roll fabric welding or seaming machine is configured to seam pieces of sheet material to one another as the pieces move downstream. The machine includes modular gantries and various actor devices which may be readily mounted on any of the gantries to interact with the moving sheet material to achieve various functions, such as seaming pieces of sheet material together, forming hems, applying grommets to the sheet material, printing on the sheet material, connecting reinforcement strips or ropes to the sheet material and cutting the sheet material.

Systems useful for reinforcing a support mat over at least one seam formed between upper and lower panels of the mat include at least one extruder configured to apply weld-forming material over the seam(s) to form at least one weld atop the seam(s) and at least one electronic controller associated with the extruder.

A method of reinforcing a support mat includes at least one extruder applying at least a first stream of weld-forming material over at least one seam formed between upper and lower, interconnected, at least partially overlapping, panels on the top of the mat and at least one automated extruder applying at least a second stream of weld-forming material over at least one seam formed between the panels on the bottom of the mat.

A method for covering a site with synthetic turf includes laying down a first elongate strip of synthetic turf, laying down a second elongate strip of synthetic turf, with the second elongate strip of synthetic turf is laid down substantially adjacent to the first elongate strip of synthetic turf in a manner such that a portion of the second elongate strip partially overlays a portion of the first elongate strip forming a lap joint. The method also includes the step of applying heat and/or pressure to weld the first elongate strip of synthetic turf to the second elongate strip of synthetic turf along the lap joint.