摘要:
A method of manufacturing a reinforced expanded rubber sealing strip (SS) comprising extruding, in an extruder (2), a rubber compound (R) comprising a blowing agent (B) so as to form an elongate rubber compound strip (RS) provided with a groove running along the length of the strip (RS); downstream of the extruder (2), applying a reinforcing strip (TS) of molten thermoplastic material in the groove (10) to form a composite strip (CS) of the rubber compound strip (RS) and the reinforcing strip (TS); heating the composite strip (CS) to expand and vulcanize the rubber compound strip (RS) to form a vulcanized composite strip (VCS); and cooling the vulcanized composite strip (VCS) so as to shrink the rubber compound strip (RS) and solidify the strip (TS) of molten thermoplastic material to form the reinforced expanded rubber sealing strip (SS).
摘要:
A plastic product from a recycled plastic mix of unidentified, unclean and unsorted mixed plastic waste having a top-surface structure, a bottom-surface structure, side-surface structures, a surface layer, a 5-20 mm thick dense surface layer, and a porous and foamed inner part, wherein the product comprises approximately 5-15% polystyrene and polypropylene and 70-90% PE/PP and is made with a system comprising thermal and mechanical processing of the recycled plastic waste using continuous extrusion foaming, two-phase cooling, continuous metering of the pulling strength and automatic adjustment of the pulling speed and extrusion speed.
摘要:
A method of manufacturing a reinforced expanded rubber sealing strip (SS) comprising extruding, in an extruder (2), a rubber compound (R) comprising a blowing agent (B) so as to form an elongate rubber compound strip (RS) provided with a groove running along the length of the strip (RS); downstream of the extruder (2), applying a reinforcing strip (TS) of molten thermoplastic material in the groove (10) to form a composite strip (CS) of the rubber compound strip (RS) and the reinforcing strip (TS); heating the composite strip (CS) to expand and vulcanize the rubber compound strip (RS) to form a vulcanized composite strip (VCS); and cooling the vulcanized composite strip (VCS) so as to shrink the rubber compound strip (RS) and solidify the strip (TS) of molten thermoplastic material to form the reinforced expanded rubber sealing strip (SS).
摘要:
An extrusion control system for use with one or more extruders has a data acquisition module in communication with one or more data acquisition nodes that are associated with an extrusion process. A control module is also in communication with one or more control nodes associated the extrusion process. A synchronization signal to one or more control nodes causes the nodes to adjust to a predetermined setting.
摘要:
An apparatus and associated method for varying the color and/or flavor of an extruded food product during a single production run of a single extrusion device. The apparatus includes a mufti-additive injection system, which is attached to a fluid supply line of an extrusion device. The injection system is comprised of a plurality of additive supply tanks, which are each in fluid communication with the fluid supply line via an injection manifold, and a metering mechanism which selectively controls the amount of additive injected into the supply line by each individual supply tank. The injection system may also include a central control mechanism for calibrating the amount of additive injected into the supply line and for maintaining a constant fluid volume added to the extrusion device. Each of the additive supply tanks may contain a different colorant and/or flavoring. Two variants of the injection manifold are provided as well as a novel injection sequence for use with the disclosed system.
摘要:
A kneading apparatus includes a barrel (7) having a chamber (6), which is a tubular hollow, a biaxial screw set (5) for extruding a material to be kneaded downstream by rotation of the biaxial screw set (5) inside the chamber, and kneading blade sections (14,15), mounted in the screw set (5), for kneading the material by shearing the material in tip clearances and a wedge-shaped space between an inside wall of the chamber (6) and the kneading blade sections. The tip clearance becomes narrower from the upstream side to the downstream side in the direction of extrusion of the material. The kneading apparatus, which performs a continuous kneading operation, makes it possible to set proper kneading conditions in accordance with changes in the state of a material being continuously kneaded, and achieves high kneading efficiency.
摘要:
A molded product is produced with a desired cross-sectional area, tension of the molded product to be taken in a press-bonding device is stabilized, and the difference between the production speed of the molded body and the taking-in speed of the molded body in the press-bonding device is absorbed to improve the yield. A resin material 7a for the frame is extruded through an extrusion die 20 at a predetermined extruding speed, hardened in a cooling unit 21 to be a molded product 7 and taken up by a take-up unit 24 at a predetermined speed, whereby a molded product 7 having a desired cross-sectional area is continuously molded. A molded product reservoir 38 is provided between the take-up unit 24 and the press-bonding device 32 to apply a predetermined tension to the molded product 7 to be taken in the press-bonding device 32, whereby the variation in the taking up speed of the molded product 7 by the take-up unit 24 and the variation in the taken-in speed of the molded product 7 in the press-bonding device 32 are absorbed by the molded product 38.