摘要:
Laminated reinforced thermoplastic sheets are made by preparing first and second porous sheets, each having 20% to 60% by weight of reinforcing fibers having a high modulus of elasticity and 40% to 80% by weight of a thermoplastic material differing from the thermoplastic material in the other sheet and applying heat and pressure to cause the sheets to consolidate and adhere together to form the laminate.
摘要:
A method for applying particulate powder material to a moving, pre-formed, fibrous substrate. In this method, particulate powder material is entrained in a continuous airstream. The air-entrained stream of particulate material exits a nozzle to be applied to the substrate or recirculated. The stream of air-entrained particulate matter has a velocity component in the direction of movement of the fibrous substrate.
摘要:
A polyester resin laminated plate which has a smooth surface, has less anisotropy of mechanical properties, is inexpensive, has no restriction in size, thickness, etc., and has a good cutting workability is produced by a process including the steps of melt-extruding a composition including 100 parts by weight of a thermoplastic polyester resin compounded with from about 5 to about 40 parts by weight of a fibrous reinforcing material and from about 5 to about 50 parts by weight of a granular inorganic compound to form sheets, forcibly cooling the sheets to a temperature lower than the glass transition point of the polyester resin to provide plural sheets having a surface crystallinity of less than about 10%, laminating these plural sheets, and hot-pressing them at a pressure of from about 15 to about 150 kg/cm.sup.2 and at a temperature of from about 80.degree. to about 260.degree. C., with the rate of temperature increase of about 3.degree. C./minute or more to reach the temperature.
摘要翻译:具有光滑表面,机械性能各向异性低的聚酯树脂层叠板价格便宜,在尺寸,厚度等方面没有限制,并且具有良好的切割加工性通过包括以下步骤的方法制造:熔融挤出 组合物,其包含100重量份与约5至约40重量份的纤维增强材料混合的热塑性聚酯树脂和约5至约50重量份的颗粒状无机化合物以形成片材,强制冷却 将其压片至比聚酯树脂的玻璃化转变点低的温度,以提供表面结晶度小于约10%的多个片材,层压这些多个片材,并以约15至约150kg的压力热压它们 / cm 2,温度约80℃〜260℃,温度升高约3℃/分钟以上,达到温度。
摘要:
A pre-preg pre-cut tape 20 is made by the steps of converting the forms of a pre-preg to be cut into co-ordinates on a pre-preg tape 2 from the data on the form of lamination and the condition of lamination to form the data on the form to be cut, forming the data on the forms of unnecessary portions showing the forms of the unnecessary portions 4 from the data on the forms to be cut, forming the data on division for dividing the forms of the unnecessary portions into the forms of (a) to (f) removable from a mold releasing paper, and forming the data on the direction of removal for showing the direction of removing the unnecessary portions of (a) to (f) divided on the basis of the data on division, whereby the unnecessary portions 4 are removed on the basis of such data.
摘要:
The hardness and appearance of an in-mold coating for a molded article of cured unsaturated polyester are improved by the addition of melamine and/or benzoguanamine to an unsaturated polyester powder coating composition and subjecting the modified powder coating to a molding temperature of from about 260.degree. F. to about 340.degree. F. and a pressure of from about 650 psi to about 2000 psi for from 1 to 12 minutes. From about 5 to about 40 parts of the melamine and/or benzoguanamine per hundred parts by weight of the coating resin is used.
摘要:
This invention relates to a process for manufacturing composites and laminates reinforced with continuous or long fibers and/or filaments. The process includes the subsequent steps of (a) forming a preform of reinforcing material by arranging a green tape, ribbon, sheet or cloth including a number of continuous longitudinally oriented fibers or filaments which are spaced from each other by uniformly distributed particles, bonded by a flexible binder, (b) removing or converting a major portion of the binder into matrix material and, if applicable, (c) filling the voids and cavities with matrix material. Further, this invention relates to a process for manufacturing composites and laminates reinforced with chopped-aligned fibers and/or filaments, which includes chopping a green tape or ribbon as defined above, mixing the chopped tape or ribbon with a binder, lubricant and/or matrix material and forming mouldings from this mixture by any moulding method.
摘要:
A method and apparatus for molding fiberglass reinforced plastic articles using a new flowable liquid molding compound includes placing a mat of fiberglass reinforcing material in a mold half while the molds are open, rapidly closing the mold halves until they reach a distance of approximately 2" from a fully closed position, injecting the liquid molding compound which has been maintained at a temperature in the range of 75.degree. to 77.degree. F. into the space between the mold halves while the mold halves continue to close at a slower rate of speed, completing the closing of the mold halves after said injection step to compression mold the molding compound into conformity with the mold cavity while trimming excess glass reinforcing material and heating the shaped molding compound to a temperature causing it to set.
摘要:
A metal mold for producing a wood type golf club head, including an upper metal mold member having a molding recess including a surface for molding an upper end portion of a shaft bore in a club head, a lower metal mold member having a molding recess including a surface for molding a sole of the club head, a shaft bore molding upper pin fitted firmly in the portion of the surface of the upper metal mold member which corresponds to an upper end portion of the shaft bore, so as to project to the inner side of the metal mold, and a shaft bore-molding lower pin fitted firmly in the lower metal mold member so as to project to the inner side of the metal mold, the upper and lower pins being arranged coaxially in an opposed state via a narrow clearance, the direction in which the upper and lower pins are arranged crossing perpendicularly the direction in which the joint surfaces of the upper and lower metal mold members extend.
摘要:
Process for producing fiber-reinforced thermoplastics in a double-belt press in which the lateral sealing of the press space is formed from a porous profile which is mechanically supported against being laterally forced out and moistened with water before it enters the press.
摘要:
A totally non-metallic wrench formed entirely of fiber-reinforced plastic material includes a core of random discontinuous glass-fiber-reinforced plastic material and a band of unidirectional continuous glass-fiber-reinforced plastic material extending around the periphery of the core which are subjected to compression molding to form a composite wrench structure.