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402 results about "Heat fusion" patented technology

Heat fusion (sometimes called heat welding, butt welding or simply fusion) is a welding process used to join two different pieces of a thermoplastic. This process involves heating both pieces simultaneously and pressing them together. The two pieces then cool together and form a permanent bond. When done properly, the two pieces become indistinguishable from each other. Dissimilar plastics can result in improper bonding.

Composite structural panel with thermoplastic foam core and natural fibers, and method and apparatus for producing the same

A composite structural panel includes a cover sheet laminated onto a three-layered substrate including a thermoplastic foam core sandwiched between two composite outer layers. Each composite outer layer includes natural fibers embedded in a thermoplastic matrix. The thermoplastic material of all layers is preferably polypropylene, and the core consists of an expanded cellular polypropylene rigid foam. In a method for forming the composite structural panel, a first preheated outer layer is laminated and molded onto the foam core in a first molding step, and then the second preheated outer layer and the cover sheet are laminated and molded onto the foam core in a second molding step, with a cooling-down time allowed between the two molding steps. In this manner, each preheated outer layer provides enough heat to thermally fuse the outer layer onto the foam core, without overheating the foam core to the point of softening or melting the foam core. The low density foam core provides a spacing distance between the strong composite outer layers, and therefore the finished composite structural panel has a high strength and rigidity, and a high strength-to-weight ratio. The structural panel can be molded into any desired three-dimensional contoured configuration during the molding process.
Owner:HERBERT OLBRICH

Flat oxygen-enriched membrane component

The invention relates to a flat oxygen-enriched membrane component, which consists of an upper template, a middle template and a lower template which are fastened. One end of the upper template, one end of the middle template and one end of the lower template are provided with oxygen outlets A, B and C which are communicated; the insides of the upper template and the lower template are provided with oxygen-enriched membranes A and D respectively; two sides of the middle template are provided with oxygen-enriched membranes B and C respectively; air passages A and B are arranged between the adjacent oxygen-enriched membranes; one end of the air passage A and one end of the air passage B are communicated with the atmosphere, and the other end of the air passage A and the other end of the air passage B are communicated with the oxygen outlets A, B and C; the oxygen outlets B and C are provided with oxygen passage covers B and C of through holes; and the flat oxygen-enriched membrane component is characterized in that heat fused welding layers are arranged between the oxygen-enriched membranes A, B, C and D and the corresponding upper template, the middle template and the lower template respectively. The oxygen-enriched membranes are physically welded and fixed by adopting heat fusion, the defects of adhesion and fixation of adhesive are thoroughly changed, the service life is ensured, and the utilization ratio is improved.
Owner:周纪昌

Endoscope System with a Disposal Sheath

InactiveUS20080249362A1Reduce spacingDecrease reflected complicated lightSurgeryEndoscopesCatheter blockageFlexible endoscope
The purpose of this invention is absolute elimination of medical cross-infection by endoscopy. It offers an endoscope system with a disposal sheath. The disposal sheath via anterior end cap connects the capsule which covers the outside of the endoscope and the disposal channel which sheathe in the endoscope channel and the fluid-air channel, and all these parts are joined together in a whole body. After the disposal channel is passed through the endoscope channel, its posterior disposal channel can be blocked into the elastic sealing cap via the guide tube, the posterior disposal channel's orifice need to be heated and melted and cut up simultaneously and its cut edge is in shape of V-shape by using one kind of heat fusion forceps after the use and before the retracting from the endoscope channel. A fluid-air exit and a sucking channel adapter are set on the posterior endoscope, convenience to connect with the fluid-air channel and the three-way sealing cap, the fluid-air channel may be single cavity channel or double cavity channel or two single cavity channels join in one channel together at nearing jet channel site, the channel sizes may be cylinders, or flat sizes. Both the outer surface of the endoscope and the inner surface of the endoscope channel are protected from pollution by the disposal sheath, thus ensures patients to safely use the permanent endoscope.
Owner:JIANG KERANG +1

Three-dimensional printing forming method of long fiber thermoplastic composite material component

The invention discloses a three-dimensional printing forming method of a long fiber thermoplastic composite material component, and belongs to the field of composite material forming technologies. A reinforced yarn is expanded as a thinner yarn strip, and is fully infiltrated with a drawn resin strip to form a single-layer prepreg yarn; the single-layer prepreg yarn is extruded by a shaping device to form a prepreg tow with appointed shape and size; and the prepreg tow is guided by a guide device to bond with a previous layer of composite material to form a composite material laminating structure after heating fusion by a compaction device. Through unfolding of continuous fibers and drawing of a basal body material, the method effectively improves the infiltration effect of the yarn and the resin so as to improve the interface bonding strength of the fiber and the basal body; the prepreg tow can be printed by any angle; and meanwhile, after the prepreg tow is compacted by the compaction device, the fiber volume fraction is prominently increased, so that the added material manufacturing of a high-performance composite material component with complex structure can be realized.
Owner:ADVANCED MFG TECH CENT CHINA ACAD OF MASCH SCI & TECH

Automobile inner decorative board made of composite materials of natural fibers/thermoplastic resin, and mixing method of composite materials of natural fiber/thermoplastic resin

The invention discloses an automobile inner decorative board made of composite materials of natural fibers / thermoplastic resin, and a mixing method of the composite materials of the natural fiber / the thermoplastic resin. The automobile inner decorative board is composed of at least a core layer and a surface layer. The surface layer is composed of the following main raw materials, by weight, 5-35 parts of spandex fibers, 25-45 parts of polyester fibers, 15-25 parts of low-melting-point and skin-core type composite fibers, and 15-35 parts of high-melting-point hot melting fibers, wherein the difference between the melting point of the high-melting-point hot melting fiber and the melting point of the low-melting-point and skin-core type composite fibers is larger than 20 DEG C. The core layer is composed of the following main raw materials, by weight, 5-35 parts of basalt fibers and / or glass fibers, 5-35 parts of the natural plant fibers with modified surfaces, 15-35 parts of polyester fibers, 15-25 parts of low-melting-point and skin-core type composite fibers, and 15-25 parts of high-melting-point fibers. The automobile inner decorative board and the mixing method achieve integration of manufacturing and forming of the composite materials, and the material manufacturing stage can assist the material forming stage directly and effectively.
Owner:SHANDONG UNIV

Continuous-fiber reinforced thermoplastic polymer temperature-adjusting plate

A continuous-fiber reinforced thermoplastic polymer temperature-adjusting plate comprises a surface plate, a bottom plate, a honeycomb core layer and a phase-change energy-storage material packed in the honeycomb core layer. The surface plate, the bottom plate and the honeycomb core layer are prepared from a sheet of a continuous-fiber reinforced thermoplastic polymer composite material filled with a modified heat-conduction filler, the honeycomb-core-layer phase-change energy-storage material is packed in multiple mutually-independent chambers in the honeycomb core layer, and the surface plate and the bottom plate are respectively combined with the upper surface and the lower surface of the honeycomb core layer through heat fusion. By blending a high-heat-conductivity substance with the polymer, the high-heat-conductivity continuous-fiber reinforced thermoplastic polymer plate, which is prepared by employing a double-face film coating method, has high specific modulus and specific strength. The honeycomb core layer employs a material same to that of the surface plate, and the honeycomb core layer and the surface plate are firmly bonded through fusion. Honeycomb holes are filled with the phase-change material, the addition amount is large and the problem that the phase-change material precipitates is effectively avoided. The continuous-fiber reinforced thermoplastic polymer temperature-adjusting plate has an expanded application field and is especially applicable to decoration of indoor decoration furred ceilings and wall surfaces.
Owner:BEIJING UNIV OF CHEM TECH

Production process of double-point non-woven fusible interlining

The invention discloses a production process of a double-point non-woven fusible interlining, which sequentially comprises the following steps of: A) using 43 percent of nylon fibers and 57 percent of polyester fibers by mass as raw materials, laying the raw materials to form a net, heating and hot rolling through a hot mill to enable the nylon fibers and the polyester fibers to be bonded with each other to form a non-woven base fabric; B) softening the non-woven base fabric through silicone oil and conducting inspection; C) cropping after the non-woven base fabric is inspected to be qualified; D) conducting double-point coating fabric feeding after cropping, firstly using a circular screen for primer transfer and then spreading fusible adhesive powder on the primer; E) clearing the fusible adhesive powder which is not combined with the primer by adopting an air blowing and suction method; F) baking through a baking oven, wherein the baking temperature is 167 DEG C and the fabric feeding speed is 36m/min; G) cooling through cooling rolls, wherein deep-well water or tap water chilled by a water chiller is filled into the cooling rolls; and H) conducting final inspection to the cooled double-point non-woven fusible interlining, rolling and containing the double-point non-woven fusible interlining in a box. The production process of the double-point non-woven fusible interlining has the advantages that the production quality is improved, the production energy consumption is reduced, the production efficiency is improved and the production cost is reduced.
Owner:温州鸿马科技有限公司
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