Provided is a method for manufacturing a fishing net formed from a plastic net that can be handled by winding or folding although the net has plastic rigidity. The fishing net is manufactured by (1) a step of preparing a multifilament yarn formed by bundling a plurality of core-sheath type composite filaments, in each of which a core component is made of polyethylene terephthalate and a sheath component is made of polyolefin, (2) a step of preparing a yarn thread obtained by paralleling a plurality of the multifilament yarns, (3) a step of twisting or braiding four yarn threads 11, 12, 13, 14 to obtain a net constructed with strands 1 and intersections 2, (4) a step of heat-treating the net under without pressure to melt the sheath component of the yarn threads 11, 12, 13, 14 constituting the strands 1 and the intersections 2, followed by solidifying, thus obtaining a plastic net, and (5) a step of forming the fishing net using the plastic net.

The present disclosure relates to a noise reduction vibration welding machine using frequency cancellation in which two synthetic resin products are fixed to an upper end jig and a lower end jig of the vibration welding machine and the target objects are welded by being melted and diffused while being subjected to the friction of lateral vibrations and pressed by the upper end jig according to a determined frequency and a determined amplitude, and which is capable of reducing noise generated during the work process, and more specifically, a frequency of noise generated due to vibrations during a work process is checked, and a noise analyzer, which generates a frequency with a reverse phase, outputs a cancellation sound through inner and outer speakers to cancel the corresponding frequency.

The present disclosure provides a chemical container and a method for manufacturing the same. The chemical container comprises a head portion having a top wall and a head sidewall extending from an edge of the top wall, as well as a body portion jointed with the head portion and defining a chamber together with the head portion. The top wall has a mouth structure configured for one or more pipelines to pass through and connect with the chamber. The manufacturing method is simple and of low cost, and the resulted chemical container is able to withstand a greater internal pressure and is configured to collect any leaking liquid chemicals.

Provided is a method for producing a fiber-reinforced plastic having high mechanical properties and high productivity during molding of a complicated shape. A method for producing a fiber-reinforced plastic using a sheet substrate A is provided, the sheet substrate A being a substrate including one or more sheets of incised prepreg a, the incised prepreg a being a prepreg including unidirectionally oriented reinforcing fibers and a resin and having a plurality of incisions dividing the reinforcing fibers formed in the prepreg, wherein the method for producing a fiber-reinforced plastic includes a placement step (A) of placing a plurality of sheet substrates A in a mold such that each of the sheet substrates A forms an overlapping portion in which the sheet substrate A overlaps one or more other sheet substrates A and a non-overlapping portion in which the sheet substrate A does not overlap any other sheet substrates A, and a molding step of heating and pressing the plurality of sheet substrates A, and the total area of the overlapping portion and the non-overlapping portion is 50 to 100% relative to the area of a mold surface.

A method of joining overlapping thermoplastic membrane components in which a first thermoplastic membrane component and a second thermoplastic membrane component are positioned in overlapping relationship between a pair of complementary molding surfaces, with at least one of the complementary molding surfaces being defined by an electrically conductive metal susceptor. Heat is generated in the metal susceptor and transferred by thermal conduction from the metal susceptor to overlapping portions of the first and second thermoplastic membrane components to locally melt and coalesce at least a portion of the thermoplastic material of the first thermoplastic membrane component and at least a portion of the thermoplastic material of the second thermoplastic membrane component. The molten thermoplastic material of the first and second thermoplastic membrane components forms a zone of coalesced thermoplastic material that, upon cooling, forms a solid weld joint that fusion welds the first and second thermoplastic membrane components together.

End effectors having compaction feet for welding thermoplastic parts of thermoplastic composite laminated articles are described. An example end effector is to be coupled to a robot. The end effector includes a welding head. The welding head includes a welder having a first central axis and a compaction foot having a second central axis. The welder is movable along the first central axis between a first retracted position and a first extended position relative to a surface of the end effector. The compaction foot circumscribes the welder and is movable along the second central axis between a second retracted position and a second extended position relative to the surface.

Provided is a method for producing a fiber-reinforced plastic having high mechanical properties and high productivity during molding of a complicated shape. A method for producing a fiber-reinforced plastic using a sheet substrate A is provided, the sheet substrate A being a substrate including one or more sheets of incised prepreg a, the incised prepreg a being a prepreg including unidirectionally oriented reinforcing fibers and a resin and having a plurality of incisions dividing the reinforcing fibers formed in the prepreg, wherein the method for producing a fiber-reinforced plastic includes a placement step (A) of placing a plurality of sheet substrates A in a mold such that each of the sheet substrates A forms an overlapping portion in which the sheet substrate A overlaps one or more other sheet substrates A and a non-overlapping portion in which the sheet substrate A does not overlap any other sheet substrates A, and a molding step of heating and pressing the plurality of sheet substrates A, and the total area of the overlapping portion and the non-overlapping portion is 50 to 100% relative to the area of a mold surface.

The present invention relates to a laminated liquid food packaging material, comprising a cellulose-based bulk material layer and outer layers of thermoplastic polymers on both sides, having a dcorative print pattern arranged beneath one of the outer thermoplastic polymer layers. The invention further relates to the method for manufacturing the laminated packaging material and to a packaging container for liquid food packaging, comprising the laminated packaging material.

End effectors having compaction feet for welding thermoplastic parts of thermoplastic composite laminated articles are described. An example end effector is to be coupled to a robot. The end effector includes a welding head. The welding head includes a welder having a first central axis and a compaction foot having a second central axis. The welder is movable along the first central axis between a first retracted position and a first extended position relative to a surface of the end effector. The compaction foot circumscribes the welder and is movable along the second central axis between a second retracted position and a second extended position relative to the surface.

A wire embedding system and methods are presented. A wire is embedded in a substrate at predetermined locations in a series of sequential embedding instances using heat and pressure. The heat and pressure are removed from the wire in between the series of sequential embedding instances.