摘要:
A method is disclosed for reinforcement of thin wall hollow thermoplastic storage vessels with one or more wraps of continuous fibers. This method requires thermal bonding between the reinforcement fibers and the outer surface of the thermoplastic storage vessel while the interior cavity of the storage vessel is being pressurized. The fiber wraps can also be oriented in spatial directions further resisting internal stress on the storage vessel walls when put in service.
摘要:
A vibration absorbing hose has a corrugated portion extending substantially entire part of the hose and end portions of straight cylindrical shape. The vibration absorbing hose has multi-layered construction of tubular inner rubber layer, pressure resistant reinforcement layer circumscribing an outer side of the inner rubber layer and outer rubber layer as outermost cover layer. The pressure resistant reinforcement layer is formed, for example, by braiding reinforcing yarns, so as to have corrugations along the corrugated portion of the inner rubber layer.
摘要:
A method for manufacturing a grip material consisting of a layer of polyurethane and a layer of EVA. A nylon cloth material is used as a temporary support for coagulating the polyurethane by a wet coagulation process. The coagulated polyurethane is then separated from the nylon cloth material and subsequently joined with a strip of EVA material to yield a grip material with the tackiness and superior shock cushioning characteristics of a polyurethane/felt grip combined with the water resistant and lightness characteristics of a polyurethane/EVA grip.
摘要:
A flexible pipe and a method of manufacturing same according to which an inner sheath is surrounded by at least one tensile layer, and an outer sheath of polymeric material consisting of an olefin polymer blended with at least one thermoset elastomer is disposed around the tensile layer.
摘要:
A method for manufacturing a grip material consisting of a layer of polyurethane and a layer of EVA. A nylon cloth material is used as a temporary support for coagulating the polyurethane by a wet coagulation process. The coagulated polyurethane is then separated from the nylon cloth material and subsequently joined with a strip of EVA material to yield a grip material with the tackiness and superior shock cushioning characteristics of a polyurethane/felt grip combined with the water resistant and lightness characteristics of a polyurethane/EVA grip.
摘要:
A method is disclosed for producing a covered roll having a multi-layered construction. A first embodiment includes a plurality of steps. The first step is to provide a cylindrical roll core having two ends, a length therebetween, and an outer surface. Next, a dry fiber mat layer is tightly wrapped over the roll core outer surface. A fabric, in the form of a strip, is impregnated with a thermoset resin such as epoxy or urethane. The roll core is then rotated and the thermoset resin impregnated fabric strip is helically wound over the tightly wrapped dry fiber mat layer. Tension is maintained while winding the thermoset resin impregnated fabric strip to form a fabric layer.
摘要:
A wrapped and curing substrate is secured with a strap. The strap has two clips, each having a prong. The prong of a first clip is slid in a first direction into a first portion of the wrapped substrate. A second clip is pulled away from the first clip over a substrate edge, and the prong of the second clip is slid into a second portion of the wrapped substrate in a direction opposite the first direction. In one embodiment, the first portion of the wrapped substrate is an overlapping layer of substrate, and the second portion of the wrapped substrate is the layer of substrate extending from underneath the overlapping substrate.
摘要:
A method and apparatus for making reusable paint rollers comprised of a core formed of thermoplastic material. The core is formed by helically winding one or more strips of thermoplastic material about a stationary mandril. A layer of adhesive is then applied to the outer surface of the core whereupon a cover, applied as a strip of material or as blown on fibers, is bonded thereto. The core may also be formed by applying liquefied thermoplastic material to a driven belt which transfers the thermoplastic material to the mandril. The paint roller may also be made by bonding, in a single step, the fabric cover to the wound strip wrapped about the mandril. The cover is then pressed onto the core to form a tight and secure bond therebetween. The mandril may also be cooled to speed the production process
摘要:
A steel liner (a pipe or vessel) is wrapped with a stack of sheets of glass fiber-reinforced epoxy matrix composite arranged in angle-ply pattern. The stack is cured on the liner to bond the sheets together and to the liner. The wrapped liner is then internally pressurized to cause the liner to yield while the composite remains elastic. When de-pressurized, the liner has compressive residual stress and the composite has tensile residual stress. When the resulting hybrid structure is subsequently again pressurized, it is found that the elastic regime of the liner has been extended.
摘要:
A method and apparatus for making reusable paint. rollers comprised of a core formed from thermoplastic material. The thermoplastic material is formed into a core about a stationary mandril. An adhesive is then applied to the core whereupon a cover is bonded thereto. In a first embodiment the core is formed by winding a plurality of thermoplastic strips about the mandril. In a second embodiment the core is formed by applying liquefied thermoplastic material to a driven belt which transfers the thermoplastic material to the mandril.