摘要:
A portable pipe fusion apparatus for attaching plastic side wall fittings e.g. tees, branch saddles to a plastic pipe of selected composition. This apparatus comprises a base plate with means to rigidly clamp the base plate to a pipe main. Two parallel, spaced support rods attached to the base plate at one end, and to a support plate across the other two ends. Movable clamp means guided to slide along the support rods with the axis of movement intersecting the axis of the pipe main. The movable clamp means is adapted to be attached to and hold various of the side wall fittings rigidly, so that the axes of the fittings intersect the axis of the main pipe. Drive screw means held in a quick release split nut means on the support plate, will force the movable clamp in the direction to contact the transverse pipe main. A hydraulic load cell is interposed between the drive screw and the movable clamp with an indicator which continually reads the force being applied between the moving clamp and the pipe main.
摘要:
Thermoplastic resin compositions are formed into shaped objects in a rapid-stamping process when such compositions are pre-heated and supported upon a metal foil support. The heated and relatively flowable composition is then readily transferred by means of the foil carrier to a stamping press by automatic or manual means. The thermoplastic composition may be filled and/or reinforced, and may be in the form of sheets, logs, cakes or other irregular shaped objects.
摘要:
Apparatus for repairing a damaged area in a glass panel including a frame which attaches to the panel with suction cups and a barrel supported by the frame used to receive glass-repair liquid. A plug is inserted into the barrel which has an end face which shapes the repair liquid.
摘要:
A plastic ornament and a method of making the ornament. Plastic pellets are placed in the holes of a mesh according to a predetermined pattern, each hole being sized to accommodate a single pellet. The pellets and mesh are heated until the pellets begin to fuse together. The mesh is then separated from the fused pellets. The fused pellets may be heated further until the plastic ornament achieves the desired smoothness.
摘要:
A method is disclosed for producing a longitudinally extending curved finger binding made of plastic material. The fingers are arched transversely to their longitudinal axis to provide an arched contour with a resulting increase in stiffness. A blank from which the binding is formed is heated to a temperature sufficient to soften the plastic blank. Fingers of the blank are curled and a backbone portion of the blank is curved into a closed circular plastic binding formation by use of a guide form. The guide form simultaneously curves each of the fingers transverse to their longitudinal axis.
摘要:
Process for injection molding ultra high molecular weight polyethylene by injecting the ultra high molecular weight polyethylene into a cavity having a volume 1.5-3.0 times that of the injected polyethylene at a shear rate of at least 50,000 sec..sup.-1 measured at the gate of the injection nozzle and then compressing the cavity to a volume less than 1.5 times that of the injected polyethylene.
摘要:
Relieved pattern of a resin original pattern plate, which does not exhibit fluidity at transferring temperature and possesses elastic modulus no smaller than 10 kg/cm.sup.2, preferably no smaller than 100 kg/cm.sup.2, is transferred onto thermoplastic resin material having fluidity at the transferring temperature (ASTM D1238, load 21.6 kg) of at least 0.01 dg/min, preferably at least 0.1 dg/min, by pressing the thermoplastic resin material to the original pattern plate under a pressure condition where elastic deformation of the original pattern plate is kept within 10%. The resin original pattern plate is prepared by controlling the photopolymerizable resin composition to adjust its cross-linkability and then photo-polymerizing, whereby the resulting resin original pattern plate possesses an elastic modulus of 10 kg/cm.sup.2 or higher at transferring temperature. The photo-polymerizable resin composition includes, as its major ingredients, either polymer, polyfunctional monomer (10- 90% by weight, preferably 30- 70% by weight, and having viscosity of at least 10.sup.3 poise at transferring temperature), photo-sensitizer and thermal polymerization inhibitor, or cross-linkable polymer (having at least 1000 molecular weight and double bonds at least one for each 1000 molecular weight), monomer (5- 50% by weight, preferably 10- 40% by weight), photosensitizer and thermal polymerization inhibitor.
摘要翻译:在转印温度下不具有流动性并且不小于10kg / cm 2,优选不小于100kg / cm 2的弹性模量的树脂原版图案的缓冲图案转印到在转印温度下具有流动性的热塑性树脂材料上 (ASTM D1238,负荷21.6kg)为至少0.01dg / min,优选至少0.1dg / min,通过在原始图案板的弹性变形保持在其内的压力条件下将热塑性树脂材料压制到原始图案板上 10%。 通过控制可光聚合的树脂组合物来调节其交联性,然后进行光聚合,制备树脂原始图案板,由此得到的树脂原始图案板在转印温度下的弹性模量为10kg / cm 2以上。 可光聚合树脂组合物包括聚合物,多官能单体(10-90重量%,优选30-70重量%,转印温度下粘度至少为103泊)的主要成分,光敏剂 和热聚合抑制剂或可交联聚合物(每1000个分子量具有至少1000个分子量和双键至少一个),单体(5-50重量%,优选10-40重量%),光敏剂和 热聚合抑制剂。
摘要:
A method for making a composite mold utilizing room temperature vulcanizing silicone rubber for the surface of the mold and room temperature vulcanizing polyurethane rubber for the rest of the mold.