Abstract: Prepare extruded thermoplastic polymer foam by preparing a foamable polymer mixture containing thermoplastic polymer and blowing agent at a mixing pressure, cooling the foamable polymer mixture and extruding it through a foaming die at a die pressure at least 90 bars lower than the mixing pressure and out through a die opening having cross sectional dimensions of 2.5 millimeter or more and a cross sectional area of at least 700 square millimeters at a flow rate greater than 500 kilograms per hour and allow it to expand into a polymer foam between shaping elements while restraining the extrusion rate with a restraining device so as to form polymer foam having 96 volume percent or less void volume, anisotropic cell size, a thickness of 50 millimeter or greater, compressive and tensile moduli in the thickness dimension greater than 35 mega pascals and an average shear modulus greater than 16 mega pascals.

Abstract: Sound-absorbing material is provided which is more effective for the same volume. A sound-absorbing body is formed characteristically by hot-compression molding of a raw material (C) comprises a flexible polyurethane foam to a volume ratio ranging from 1/1.5 to 1/12. In the molding, metal molds (A·B) are heated in an electric furnace up to a set temperature of 180° C.; the flexible polyurethane foam of the cell number of 50 is held between the metal molds (A·B), and compressed and heated in the electric furnace in this state at 180° C. for 60 minutes; the fixing clamp is removed; and the hot-compressed urethane foam is taken out to obtain the intended sound-absorbing body.

Abstract: A method to manufacture cushion composite structure utilizes a mold including a first mold body and a second mold body wherein at least one thereof forms a mold room. The method includes the following steps: injecting foam material into the mold room, placing a compressible core into the mold room, closing the mold, rotating the mold and foaming the foam material to fill up the mold room, and removing the mold to form the cushion composite structure. Thereby, the core is embedded in the foam material at a predetermined position, and parting line on surface of the cushion composite structure is prevented.

Abstract: A method of producing a composite structure comprising fiber reinforced material and having a longitudinal direction is described.

Abstract: The present application discloses a method of shaping a working material (12) into an article, consisting of two primary stages: (a) in the absence of added heat, consolidating and shaping the working material into a pre-form shape using a dynamic hydroforming process that employs a rigid, male-shaped tool (32) and a non-rigid, female-shaped tool (23, 24, 26); and (b) in the presence of added heat, further consolidating and shaping the working material into the final shape using at least one additional rigid forming tool (50).

Abstract: Provided is a method that can improve formability and blow moldability of a foamed parison as compared with conventional production method and can produce a polypropylene-based resin foamed blow-molded article having excellent uniformity of wall thickness over a wide range of its density. The method comprises kneading a polypropylene-based resin with a physical foaming agent, extruding the thus obtained foamable molten resin through a die to obtain a foamed parison in a softened state, placing the foamed parison between molds and then blow-molding the foamed parison and is characterized in that the polypropylene-based resin comprises a polypropylene-based resin (A) satisfying specific requirements (1) to (3) and a polypropylene-based resin (B) satisfying a specific requirement (4), when the polypropylene-based resins (A) and (B) are each subjected to dynamic viscoelasticity measurement in which an oscillation strain is applied thereto at a temperature of 190° C.

Abstract: Disclosed is a method for manufacturing carbon fiber which comprises the use of un-reacted raw material monomers in solution to prepare the precursor fiber for making the carbon fiber, and a relatively short passage period through hydrogen, which reduce production costs and increase returns. The present invention further comprises the carbon fiber precursors made thereby.

Abstract: A process for curing a porous muffler preform defined by a plurality of glass fibers and a heat-curing thermoset or thermoplastic materials applied to the plurality of glass fibers is disclosed herein. The process includes the step of enclosing the muffler preform in a chamber. The process also includes the step of surrounding the muffler preform with steam. The process also includes the step of causing steam to enter the muffler preform from multiple directions.

Abstract: The present application relates to a method and system for optimizing a composite system by electrically monitoring the reactive and physiological behavior of the resin binder in a composite system, so as to develop the desired properties of the resin during the cure process. A method of manufacturing a composite part can include assembling a composite preform with a resinous material and an open circuit. Further, the method can include subjecting the composite preform to a curing cycle so that a resin in the resinous material melts and closes the open circuit. Further, the method can include electrically monitoring a current through the resin during the curing cycle. Further, the method can include selectively controlling a manufacturing variable in response to the step of electrically monitoring the current through the resin.

Abstract: A fluid-containing conduit (10,30,40,50) including at least one luminescent marker (14) whereby the fluid-containing conduit is visible in a low light condition. The marker may be in the form of one or more elongate ribs (16) containing luminescent material along interior wall surface (18), or may be elongate luminescent bands (52,54) adjacent the exterior wall (20) of the conduit, or may be indicia containing luminescent material such as ink (42).

Abstract: Method of manufacturing a fiber-reinforced composite molding, the method comprising the steps of: (a) disposing a surfacing layer on a portion of a mold surface, the surfacing layer comprising a first resin material and being in the form of at least one solid sheet; (b) disposing at least one layer of fibrous reinforcing material on the surfacing layer to provide, on the portion of the mold surface, an assembly of the surfacing layer and a structural layer comprising the at least one layer of fibrous reinforcing material; (c) applying a vacuum to the assembly; (d) infusing a flowable second resin material, under the vacuum, into the at least one layer of fibrous reinforcing material; and (e) curing the first and second resin materials to form the fiber-reinforced composite molding which comprises a surface portion formed from the surfacing layer laminated to a structural portion formed from the at least one layer of fibrous reinforcing material and the second resin material.

Abstract: A mold 20B for foam molding which allows efficient production of the foam molded product with accurately finished outer surface, and easy release of the molded product from the mold in the foam molding method is formed of an upper mold portion 21B and a lower mold portion 22B. The gas feed means 23 formed of the valve box 25, the valve element 26 and the like is attached to an opening formed in the bottom surface of the lower mold portion 22B. The recess portions 51 are formed in each part of the opposite side surfaces 50a and 50c of the cavity 50. The protruding portions 52 are formed on the lower surface of the upper mold portion 21B so as to be fit to the corresponding recess portion 51. Upon completion of curing, the upper mold portion is separated to open the mold, air is supplied into the valve box 25 such that air is fed to a space between the molded product 31B and the bottom surface of the lower mold portion 22B to push up the molded product 31B so as to be released from the mold.

Abstract: A process for making perforations in a plastic film material to be used in a package for products prone to decay, in which the surface area of the perforations made in a defined surface area of the plastic film material must have a predetermined value, which process has the following steps: A. making of one perforation or a number of perforations in the defined surface area of the plastic film material, B. measuring the surface area of the perforation or of the number of perforations made in step A, C. calculating the difference between the predetermined perforation value minus the surface area of all perforations present in the defined surface area, D. if the difference is smaller than a first predetermined reference value, stopping the making of perforations in the defined surface area of the plastic film material, or if the difference is larger than the first predetermined reference value repeating the steps A to C until the difference is at most equal to the first predetermined reference value.

Abstract: A method for producing a long fiber nonwoven fabric includes (a) melting resin containing polyphenylene sulfide as main component, discharging it from a spinneret, solidifying resulting filaments by cooling and stretching the filaments by pulling them out of an ejector at a spinning speed of 3,000 m/min or more while heat-treating as the filaments travel to the ejector outlet to provide a long fiber; (b) collecting the long fiber on a moving net to form a nonwoven web; and (c) subjecting the nonwoven web to thermal bonding.

Abstract: The present invention provides a foamed molded article production method that can produce polycarbonate resin foamed blow-molded articles, etc. Which are good over a wide range of densities. The present invention is a method for producing a foamed molded article including extruding a foamable molten resin, formed by kneading a polycarbonate resin, a polyester resin in an amount of 5 to 100 parts by weight per 100 parts by weight of the polycarbonate resin and a foaming agent, from a die to obtain a foamed parison, and molding the foamed parison in a softened state in a mold. The polyester resin is a polyester copolymer containing diol component units, 10 to 80 mol % of which are glycol component units each having a cyclic ether structure, and dicarboxylic acid component units.

Abstract: The invention relates to a magnetic flux collector for a torque detection device. The collector includes two coaxial magnetic cylinder heads (6, 7), having respectively interlocked teeth (17, 28), overmolded by means of a plastic material. The two cylinder heads (6, 7) have, at the periphery thereof, notches (18, 19, 23) provided such as to engage with matching grooves (32, 33) which comprise a cylindrical cavity (31) of a mold (30) for overmolding the cylinder heads with the plastic material. The two cylinder heads (6, 7) are therefore positioned in a very accurate manner relative to one another, before injecting the overmolding plastic material. The invention can be used for the production of torque sensors used in the power-steering systems of automobiles.

Abstract: The invention provides a method for producing carbon fiber bundles excellent in productivity without impairing the quality in the process for producing carbon fibers. The method includes a flame-retarding step, a precarbonization step, and a carbonization step. When traveling pitches of the fiber bundles in the flame-retarding step, precarbonization step and carbonization step are represented by P1, P2 and P3, respectively, 0.8?P2/P1?1.0 and 0.4?P3/P1?0.8 are satisfied; when traveling pitches of the fiber bundles at the inlet and the outlet of a heat treatment section of a precarbonization furnace are represented by P11 and P12, respectively, 0.40?(P12/P11)?0.90 is satisfied; or when traveling pitches of the fiber bundles at the inlet and the outlet of a heat treatment section of a carbonization furnace are represented by P13 and P14, 0.40?(P14/P13)?0.90 is satisfied.

Abstract: Film structure of at least five layers, two outer layers (2) made of a polyolefin on which is each time provided, on the opposite sides, a layer (4) forming a gas barrier and whereby, between both above-mentioned gas barriers (4), is provided a layer (3) made of a foamed synthetic material, whereby the outer layers (2) consist of a mixture of a polyolefin and a binder, which makes it possible to bond this polyolefin with the layer (4) forming the gas barrier.

Abstract: The invention concerns a process for the layerwise production of a product comprising the steps of applying a layer of a hardenable material, wherein for example the process parameters of layer thickness and layer material are adjustable, selectively hardening predetermined regions of the applied layer on the basis of the geometrical data of the product, wherein for example the process parameters for the nature and level of the energy input are adjustable, repeating those steps until the geometry of the product has been produced in the form of hardened material, and finally removing the non-hardened material. Known processes suffer from the disadvantage that they do not afford variability in regard to the local properties of the product. The invention remedies that disadvantage insofar as at least one process parameter is altered during the production procedure in order to influence the grain size in a first region of the product in relation to a second region of the product.

Abstract: Disclosed is a method for molding a foamed article, such as a midsole or outsole for footwear, in which first water, then a desired amount of thermoplastic polyurethane foam beads are placed in a compression mold in the shape of the article and the mold is brought to a peak temperature of from about 130° C. to about 180° C. over a period of from about 300 to about 1500 seconds, then cooled to from about 5° C. to about 80° C. over a period of from about 300 to about 1500 seconds within about 30 seconds after the peak temperature is reached. The foamed article made by the method has a density of from about 0.1 to about 0.45 g/cm3.