Abstract: One aspect of the present disclosure relates to devices for sealing gaps in an extrusion assembly to provide for a consistent extrusion. In one embodiment, a barrel-shaped sealing device with a resilient protruding edge is used to prevent extrusion material from entering gaps between the piston and the inner surface of the barrel. The sealing device includes a fastener to releasably attach the sealing device to the piston. Sealing rings are inserted into a bottom gap formed between the bottom edge of the barrel and the bottom surface of the die.

Abstract: A laser machining apparatus has a workpiece holding unit, a laser irradiation unit, a machining feed unit that moves the holding unit and the laser irradiation unit in a machining feed direction, an indexing feed unit that moves the holding unit and the laser irradiation unit in an indexing feed direction, and a control unit that controls the operation of each component. The time required to stop the laser irradiation unit relative to the holding unit can be denoted by ‘ta’ and that required to index the irradiation position of the laser beam at the next scheduled division line can be denoted by ‘tb.’ When tb>ta, the control unit initiates the stopping and indexing simultaneously after a machining step and takes advantage of remaining time (tb?ta) following the end of the stopping to start to accelerate the laser irradiation unit relative to the holding unit.

Abstract: An improved guide rail in particular for a transport device or stretching unit is distinguished inter alia by the following features—the cooling device comprises at least one cooling duct which extends in a zigzag shape inside the guide rail and which is formed by connected transverse bores, and/or—the guide rail comprises at least two half-shells or halves between which a flexible tube is arranged in a sandwich-like manner to form at least one cooling duct, and/or—at least one cooling duct is arranged outside the guide rail so as to extend parallel thereto, and, in the longitudinal direction of the guide rail, in each case bores extending transversely thereto are made, into which bores outwardly projecting heat lines and/or heat pipes are inserted.

Abstract: A method of producing a mold includes obtaining a master mold, the master mold including surface details; exposing a curable material to the surface details; and curing the curable material with the surface details. A mold includes a surface for molding a composite part, the surface including surface details, wherein the mold is made of phenolic material.

Abstract: A production method for a fiber-reinforced plastic, in which a preform made of a reinforcing fiber substrate and having a three-dimensional shape and an inner mold operatable in a lateral direction different from an up-down direction are disposed in a mold cavity formed by an upper mold and a lower mold, and a state in which a plate thickness of the preform has been made greater than the thickness of a molded article to be obtained is brought about, and a matrix resin is injected and impregnated into the preform, and, after that, at least one of the upper mold and the lower mold is operated toward the other and the inner mold is operated in the lateral direction to pressurize the preform, whereby the thickness of the preform is controlled so as to be equal to a predetermined product's thickness, and subsequently the matrix resin is hardened by heating to obtain the molded article, and a production apparatus for a fiber-reinforced plastic for use in the production method.

Abstract: Disclosed is a block press and associated process, for dynamically forming a block mold, to produce a masonry block. In some embodiments, the block mold includes a plurality of mold elements, such as a lower impact plate, an upper impact plate, and a plurality of side plates, and can further include one or more block cores. In operation, one or more of the mold elements are moved to dynamically forming a block mold, which is then filled with product formula. The product formula is then compressed, to form a masonry block. One or more of the mold elements are then released, such as to release pressure on the formed masonry block, and to allow removal of the formed masonry block from the block press, wherein the formed masonry block can be moved to a curing area, and the block press can reform the block mold for subsequent production.

Abstract: A process of compression molding an article from a curable resin is provided that includes opening a mold to an open position by displacing an upper die having an upper mold surface from a lower die having a lower mold surface. Resin is placed a mold surface and the dies are closed to an intermediate start position at a rate of from 1 to 10 cm/sec. The dies are then closed to a start position at a rate of between 25 and 60% of the rate of closure to the intermediate position. A shroud volume is evacuated for at least 3 seconds to a reduced pressure of less than 0.16 atmospheres while continuing to press toward a mold cavity volume at a rate of between 12 and 30% of the rate of closure to the intermediate start. The reduced pressure is removed as the full compression is applied.

Abstract: Methods for forming a hydroentangled scrim sheet are provided. The method can include hydroentangling a scrim sheet having a first layer of staple fibers on a first side of the scrim sheet and a second layer of staple fibers on a second side of the scrim sheet to form a hydroentangled scrim sheet; calendaring the hydroentangled scrim sheet to form a calendared hydroentangled scrim sheet; impregnating the hydroentangled scrim sheet with a saturant composition; drying the saturant composition impregnated into the calendared hydroentangled scrim sheet; applying a bond coat onto a surface of the calendared hydroentangled scrim sheet; and applying a top coat onto the bond coat. The top coat is, in one embodiment, configured to provide a surface for further coatings thereon.

Abstract: An overmolding method for making thermoplastics articles of manufacture, for the perfumery and cosmetics fields, comprises the steps of: a) providing a first plastics material in a form suitable for an injection molding; b) providing an injection press, and molding by the injection press the first plastics material thereby providing a raw molded article of manufacture; c) associating with the raw article of manufacture made in said molding step: d) at least an insert element of a material different from the plastics material thereby providing an assembly of the raw molded article of manufacture and the insert element; and e) overmolding on the assembly at least a second plastics material thereby providing a finished molded article of manufacture.

Abstract: A three-dimensional printing apparatus and a three-dimensional printing method are provided. The method includes following step. An extending path associated with a first feeding path is obtained according to a feeding endpoint and at least one feeding point of the first feeding path. A printing head is controlled to move along the first feeding path according to a printing speed and to feed a forming material. The printing head is controlled to move along the extending path to an extending point according to a first speed, and to stop feeding the forming material, wherein the first speed is less than the printing speed. The printing head is controlled to move along a direction away from the extending point according to a second speed, wherein the second speed is greater than the printing speed.

Abstract: A method of fabricating a part out of composite material, includes forming a fiber texture from refractory fibers; impregnating the fiber texture for a first time with a first slip containing first refractory particles; eliminating the liquid phase from the first slip so as to leave within the texture only the first refractory particles; impregnating the fiber texture for a second time with a second slip containing second refractory particles; eliminating the liquid phase from the second slip so as to leave within the texture only the second refractory particles and obtain a fiber preform filled with the first and second refractory particles; and sintering the first and second refractory particles present in the fiber preform in order to form a refractory matrix in the preform.

Abstract: The present invention provides a method for producing molded articles by joining primary molded parts by injection welding, by which a molded article composed of primary molded parts that are joined with high weld strength can be produced. The present invention relates to a method for producing molded articles including a welding step of injecting an injection welding material containing a polyamide around or between butt weld portions of primary molded parts disposed in face-to-face contact, so as to weld the primary molded parts together to form a molded article. The polyamide contains dicarboxylic acid units and diamine units. This polyamide further contains triamine units in an amount of 0.05 to 1 mol % with respect to the total dicarboxylic acid units.

Abstract: A composition made of at least 60 wt. % of a thermoplastic elastomer resin and additives that are solid at least from 0-50° C., that has a Shore A hardness that is less than about 50 bears a patterned surface, the pattern comprising at least one microfluidic channel having a cross-sectional dimension smaller than 100 microns is a substrate for forming a microfluidic device. The chief advantages of such compositions are: its ability to bond in a sealing manner to smooth surfaces of many different compositions, its ease of manufacture and microstructure patterning, and its general impermeability to liquids.

Abstract: A refractory composition is formed by preparing a set retarded fresh cementitious composition formed from a class C fly ash, a set retardant such as boric acid, and an alkali activator such as an alkali metal citrate salt, and contacting the set-retarded fresh cementitious composition with a pH regulator, such as an alkali metal hydroxide or alkali metal carbonate. The set retarded mixture provides workability and avoids equipment fouling caused by premature setting, while the alkali activator provides rapid setting when desired. The cementitious composition is shaped into a brick, panel, slab, concrete fire log, or the like and allowed to harden. The hardened cementitious composition can be heated to form a dried cementitious composition, and further heated to produce a high strength refractory composition. Fibers and/or aggregates may be included.

Abstract: A method of forming a three-dimensional laminate for an absorbent article is provided. The method comprises providing a first nonwoven layer, providing a second nonwoven layer, and applying a pre-strain force to the first nonwoven layer or to the second nonwoven layer. The method comprises joining the first nonwoven layer to the second nonwoven layer while the first nonwoven layer or the second nonwoven layer is in a pre-strained condition, and releasing the pre-strain force to form the three-dimensional laminate.

Abstract: A method for manufacturing a composite part including a fibrous reinforcement and a thermoplastic polymer matrix, which includes the steps of i) depositing the fibrous reinforcement in a two-part mold having a seal compressible by evacuating said mold having no vent, ii) filling the evacuated mold by injecting, in the molten state, a two-component reactive system made of a reactive thermoplastic prepolymer, the injection being carried out using a device having two distinct compartments for each one of the two reactive components mixed in a static mixer, followed by a compression and compaction of the content of the mold, and iii) removing the part from the mold, without any finishing treatment. Further, a device for implementing said method, to the resulting part and to the use of said method in an “in-mold” assembly method.

Abstract: A photocurable resin composition for support regions for use in photochemical fabrication by an inkjet method, which has low viscosity and outstanding photocurability, and where the support regions, formed by the photocuring, have good supporting performance and, following the end of the photochemical fabrication, can readily be removed from the main body by dissolving in water and/or by a weak external force such as a water jet. The photocurable resin composition for support regions for use in photochemical 3D fabrication by the inkjet method contains, based on the total mass of photocurable resin composition, from 2 to 20 mass % of N-hydroxyalkyl (meth) acrylamide, from 2 to 20 mass % of (meth) acryloyl morpholine, from 3 to 30 mass % of (meth) acrylate compound having at least one (meth) acryloyloxy group, from 40 to 90 mass % of polyhydroxy compound containing two or more hydroxyl groups, and from 0.1 to 5 mass % of a photo-radical polymerization initiator.

Abstract: A method of fabricating a part out of composite material, includes forming a fiber texture from refractory fibers; placing the texture in a mold having an impregnation chamber including in its bottom portion a part made of porous material, the impregnation chamber being closed in its top portion by a deformable impermeable diaphragm separating the impregnation chamber from a compacting chamber; injecting a slip containing a powder of refractory particles into the impregnation chamber; injecting a compression fluid into the compacting chamber, to force the slip to pass through the texture; draining the liquid of the slip via the porous material part, while retaining the powder of refractory particles inside the texture so as to obtain a fiber preform filled with refractory particles; drying the fiber preform; unmolding the preform; and sintering the refractory particles present in the preform in order to form a refractory matrix in the preform.

Abstract: A 3-dimensional high-strength fiber composite component having isotropic fiber distribution, comprising 25 to 70 wt % of high-strength, high-modulus fibers, up to 5 wt % of binding fibers, and 25 to 70 wt % of thermosetting or thermoplastic matrix. The invention further relates to a method for producing same, comprising the following steps: preparing the fibers by opening the fibers by releasing the fibers from fiber bundles, bales, or textile structures; sucking and/or blowing the opened fibers onto a three-dimensional, air-permeable tool half having the contour of this side of the component in an interactively controlled manner; pre-solidifying the obtained fiber molding in the flock box; transferring the fiber molding onto a pressing tool in the form of the contour of the air-permeable tool half of the component; bringing into contact with at least one liquid plastic; and solidifying the fiber molding by pressing in order to form a component.

Abstract: A forming and trimming tool (100) operable to form and trim a composite material part. The tool includes a lower die (150), a core (115) mounted to the lower die, at least one lower pressure pad (120) mounted to the lower die, and a cutter (125) mounted to the lower die. Additionally, the tool includes an upper die (105), a cavity mounted to the upper die, and at least one upper pressure pad (110) mounted to the upper die.