Abstract: A method for making concrete roof tiles includes the steps of forming a continuous elongated ribbon or layer of concrete; cutting the continuous layer into a row of spaced end to end ribbon sections having a front edge and a rear edge; precompacting the front edge of one of two adjacent ribbon sections and compacting the precompacted front edge of the other ribbon section.

Abstract: A pattern roll especially adapted to form, in an in-line manner, peripheral edges of an article having substantially constant geometry and the pattern roll's method of fabrication are described. A bounded surface region is defined on at least a portion of a pattern roll's cylindrical surface by means of a number of circumferential and longitudinal (relative to the pattern roll's central axis) segments. Beveled surfaces are formed on these rib segments with the angle formed by the beveled surface of the circumferential segment being less that the angle formed by the beveled surface of the longitudinal segment. Notwithstanding this angular difference as between the beveled surfaces of the circumferential and longitudinal rib segments, when the pattern roll is then rotated in opposition to a platen roll so as to define a nip therebetween, and a molten thermoplastic is extruded into the defined nip, a plastic product having a peripheral beveled edge of substantially constant geometry will be formed.

Abstract: A parison thickness control system includes an extruder die and a mandrel which are movable relative to each other to change wall thickness of a parison extruded between the extruder die and the mandrel during an extrusion or forming cycle of the parison. A parison control pattern is derived by manually inputting master points each defined in terms of a target parison wall thickness and an elapsed time during the parison extrusion cycle. A further parison control pattern is derived by performing the spline interpolation to interpolate between the master points. A still further parison control pattern is derived by correcting the above-noted further parison control pattern to allow the maximum or minimum value of the master points to indicate a limit value for the target parison wall thickness during the parison extrusion cycle. The parison extrusion cycle is divided into a given number of equal time intervals to define cycle points.

Abstract: A method of forming an elongated trim strip product by first extruding a first strip of thermoplastic material from a die having an outlet with an area at least substantially as great as the desired cross-sectional area of the strip product in planes perpendicular to the direction of extrusion. Immediately subsequent to the step of extruding and while the extruded strip is still in a plastic state, it is passed longitudinally between cooperating forming rolls to shape the cross section of the extruded strip to the desired shape and cross section of the strip product. While the extruded strip is passing between the cooperating forming rolls, a backing strip of foil or thin metal is directed between the rolls in alignment with the extruded strip to bond the backing strip to the extruded strip.

Abstract: A condom having a blow formed tubular main sheath portion, and a method for making the condom. Blow extrusion techniques of fabrication are described, together with the use of various thermoplastic materials of construction, including polyurethanes, polyether block amides, styrene-rubber-styrene block copolymers, ethylene-octene copolymers, and polyesters. The condom is made by blow extruding a tubular film of thermoplastic material to form a main sheath portion, severing the main sheath portion into one or more condom pieces, and sealing one end of each piece.

Abstract: Plasticized polyvinyl butyral sheet optionally containing a gradient color band is formed by continuously extruding a sheet having a predetermined region across its width formed from melt issuing from a die at an increased mass flow rate in comparison with other portions of the melt forming the rest of the sheet and then forwardly distorting such sheet immediately after forming by preferentially stretching the side containing the predetermined region to form an arcuate shape of substantially uniform thickness. Arcuately shaped sections are then cut from the sheet to form discrete, shaped interlayer blanks having improved thickness uniformity and dimensional stability providing improved performance when used in laminated safety glass.

Abstract: A method of extruding a profiled strip of polymeric material off the extrusion die of a plastic extruder and immediately thereafter compression forming a predetermined section of the profiled strip into a predetermined shape when temperature of the polymeric material is sufficiently high to allow plastic flow in the profiled strip.

Abstract: An improved decorative automotive vehicle trim strip and method and apparatus for forming are provided by reshaping an end of a previously extruded length of thermoplastic material. The surface of the length of thermoplastic material intended for viewing is maintained at a cold temperature, well below the softening point of the thermoplastic material, during the reshaping operation. The length of thermoplastic material is heated during reshaping by a mold section heated to 400.degree. to 410.degree. F. pressed against the surface intended to be affixed to the vehicle.

Abstract: As an article of manufacture, an ovenable shaped article formed of polyethylene terephthalate having a degree of crystallinity of at least 20%, said crystallinity being substantially uniform over the whole of the shaped article, and a process and apparatus for making same.

Abstract: Method for packing a measured quantity of thermosetting resin, intended for encapsulating a component such as an integrated circuit by introducing this quantity into a flexible plastics covering which can be sealed airtight, and packing for a measured quantity of thermosetting resin intended for encapsulating a component.

Abstract: A texturing assembly for a machine for forming special brick shapes from extruded slugs of unfired material. The slugs are conveyed forward by conveyor(s) onto an elevator which lifts vertically. This lift pushes the slugs into opposing rollers. The rollers are arranged on opposing shafts spaced to produce vertical indentations in the slugs on 8-inch centers. The edges shaped by the rollers are the 4-inch long textured edges on the finished faces. At a convenient height above the rollers and on matching 8-inch centers are fixed horizontal wires. The cuts by the wires are centered in the indentations made by the opposing rollers. The cut and textured green paver brick rest on top of the slugs captive in the opposing rollers until lifted away by an automatic setting machine.

Abstract: A flexible composite material comprising a core composed of a blend of a thermoplastic resin fiber and a reinforcing fiber, and a flexible sleeve formed of a thermoplastic resin and surrounding the core is prepared by intermixing a thermoplastic resin fiber and a reinforcing fiber to obtain a core, and then extruding a thermoplastic resin over the core.

Abstract: Solid polyester fiber in spun yarns, and fabrics and garments and precursor staple fiber and filamentary tow, are prepared by an improved process involving treatment of freshly-extruded undrawn polyester filaments with caustic in the spin-finish, so as to improve moisture-wicking properties.

Abstract: Automotive trim strips are molded in an open-faced mold cavity by extruding a ribbon of plastic therein and moving a shaping roller thereover to compression mold the viewing surface of the trim strip into conformity with the surface of the mold cavity and to shape the non-viewing with the shaping roller.

Abstract: There is provided a process for preparing a partially-dissolvable and splittable conjugated microfiber with a cross-section having a matrix comprising orange-wedge shaped islands slightly connected with each other at the tips of the islands at a common matrix center. The conjugated fibers can be made into filaments and staple fibers. Filaments are spun, taken-up and then textured by means of a belt nip twister. The resulting texture yarns may then be partially dissolved, following weaving, to split. Staple fiber is processed into a non-woven fabric or, by spinning, to spun yarn and then by weaving thereof. The staple fibers can be made into fabrics such as suede fabrics, water-resistant and humidity-permeable high density fabrics, and peachskin fabrics.

Abstract: A foamable plastic material is introduced to an extruder to produce a tubular parison of the material that is subsequently clamped between mold halves moving both axially and radially inwardly to form cavities for open mounted containers. Cavities for two containers are provided with each set of mold haves clamped together around the parison at the middle of the mold set to provide individual container cavities extending on either side of the clamped portion, said individual cavities terminating in the mouth portion of the container cavity which is joined in a mouth to mouth relationship with an individual container cavity of the next set of mold halves.

Abstract: A process for the discontinuous or (preferably) continuous production of dry spun hydrophilic acrylic fibers and threads with a core/sheath structure which have improved color fastness properties, more uniform cross-sections and better processing characteristics. By employing a new after-treatment combination of more intensive counterflow washing, stretching in steam, fixing in steam and careful drying of the fibers as staple fibers, improved hydrophilic fibers with a water retention capacity above 30% can be obtained from spinning solutions which have a much lower non-solvent content than is necessary in the present-state of the art for obtaining a high water retention capacity of the order indicated above.

Abstract: A process for manufacturing stratified pieces, such as roof tiles and wall tiles, by sucessive and independent extrusion of mortars or concretes. In the process mortar is deposited on a limited part of the molds. The mortar is extruded and compacted, and some mortar is dislodged from cross strips in each zone of contact between two consecutive molds. Thereafter, complete sheets of mortar are shaped on the first layers, filling both the emptied cross strips and the limited sides, and lastly the thicknesses of the pieces are cut in their entirety in a vertical transversal plane at each zone of contact of the molds to form multiple layer tiles having homogeneous facing surfaces.

Abstract: A process for the production of crimped filaments and fibers of acrylonitrile polymers of copolymers containing at least 40% by weight acrylonitrile units, by dry spinning from highly polar solvents, where the filaments are brought to extremely low solvent contents in the actual spinning tube by a minimum of superheated steam prepared in the absence of water at very high spinning tube temperatures and spinning gas temperatures, but are cooled to low filament temperatures in the spinning tube by application of water or aqueous finishes in a quantity equivalent to more than 10% by weight moisture. In this way, spun PAN filaments of good natural color are safely obtained, in which there is no washing stage and no drying stage. Acrylic fibers and filaments combining a vacuolestable structure with a very high degree of whiteness and gloss are thus obtained with densities of at least 1.180 g/cm.sup.3, giving shrinkage-free to high-shrinkage fibers, depending on the aftertreatment applied.

Abstract: A method is shown for forming a wiper blade in which a continuous length of elastomer is extruded through a die having a die opening shaped to produce a pair of wiper blades joined in edge-to-edge relation. The elastomer is preformed to produce a weakened mid- section and then cured. The cured elastomer is then separated into two separate lengths of wiper blade by pulling the length of continuous elastomer along the weakened mid-section.

Abstract: A method of manufacturing molding members, for instance for automobiles, wherein an elongate shaped body is prepared from synthetic resin material either by an extrusion process, or by an injection process and is subjected to a controlled heating so as to soften the interior resin material while preserving the hardness of the outer surface portion. A cutter blade is advanced into the shaped body while it is subjected to the controlled heating, whereby the outer surface portion is urged and deformed inwardly to form a smooth end surface in continuous connection with remaining outer surface of the molding member.

Abstract: A pattern roll especially adapted to form, in an in-line manner, peripheral edges of an article having substantially constant geometry and the pattern roll's method of fabrication are described. A bounded surface region is defined on at least a portion of a pattern roll's cylindrical surface by means of a number of circumferential and longitudinal (relative to the pattern roll's central axis) segments. Beveled surfaces are formed on these rib segments with the angle formed by the beveled surface of the circumferential segment being less that the angle formed by the beveled surface of the longitudinal segment. Notwithstanding this angular difference as between the beveled surfaces of the circumferential and longitudinal rib segments, when the pattern roll is then rotated in opposition to a platen roll so as to define a nip therebetween, and a molten thermoplastic is extruded into the defined nip, a plastic product having a peripheral beveled edge of substantially constant geometry will be formed.

Abstract: The method ensures that the core of thermoplastic material of the product is completely enveloped by a continuous covering formed by at least one sheet of a flexible material. Equipment for carrying out the method comprises an extruder 7 for delivering the thermoplastic material in a pasty state and in the form of a rod 16-18 having a regular section, means 20 for unrolling under this rod a sheet 19 of a flexible material, means 34 and 41 for completely enveloping said rod with said flexible material, and means for pulling on said sheet of flexible material and conveying the rod to calendering rolls 43 and 44, and means 46 for forming and means 47 for cutting to the desired length said rod which is thus completely enveloped by said sheet of flexible material. This equipment is applicable to the manufacture of shapes and plates for in particular the packaging and transportation of products.

Abstract: Non-releasable, double-walled, molded, large-diameter, corrugated plastic pipe having walls made of high density polyethylene, PVC or polypropylene of sufficient thickness so as to be rigid but elastic and therefore relatively inflexible and having an integral automatically locking female coupling at one end, with access to its latching members at its exterior, and a method of manufacturing multiplex thereof by a continuous molding process. The pipe has a smooth interior wall and a corrugated outer wall integral therewith. Only minor auxiliary cutting operations are required to separate portions thereof into individual plastic pipe sections, each having the automatic-locking coupling at one of its ends. The coupling is supported on the corrugated pipe by a frustoconically shaped collar which functions as a guide for proper alignment as two sections of pipe are united into latched relation.

Abstract: A method is shown for forming a wiper blade in which a continuous length of elastomer is extruded through a die having a die opening shaped to produce a pair of wiper blades joined in edge-to-edge relation. The elastomer is scored in the mid-section thereof to produce a score line and then cured. The scored and cured elastomer is then separated into two separate lengths of wiper blade by dividing the length of continuous elastomer along the score line.

Abstract: The specification describes and claims a method of making therapeutic rings from a curable silicone rubber based composition. The rings are capable of controlled release of the therapeutic agent in the human or animal body. The method includes the steps of:(i) extruding a first composition comprising a therapeutic agent and a first elastomer-forming silicone composition to provide a core;(ii) extruding a second composition comprising a second elastomer-forming silicone composition to provide a sheath enclosing the core;(iii) bringing together end portions of a piece of extruded core and sheath to form a ring,(iv) effecting crosslinking of the extruded core, and(v) effecting crosslinking of the extruded sheath.

Abstract: Extrudable pharmaceutical mixtures are tableted by a continuous method in which the mixture is extruded and the still deformable extrudate is pressed between two rollers which are driven in opposite directions and possess depressions opposite one another in the roller shell, the form of these depressions determining the tablet shape.

Abstract: Long lengths of a heat-shrinkable sleeve for use in splicing electrical cables and the like are manufactured by providing an elongated impermeable core having a smooth outer surface, extruding an elongated sleeve around and in contact with the core, the sleeve having a smooth inner surface conforming to the outer surface of the core, and effecting an initial expansion of a portion of the sleeve to a larger diameter in an expansion zone so that the sleeve separates from the core and leaves a space between the sleeve and core. A fluid is introduced into the space under pressure via a fitting at the downstream end of the sleeve while continuously advancing the sleeve and core through the expansion zone. To begin the process, a permeable core is used, and the sleeve is extruded around and in contact with the permeable core.

Abstract: The irrigation hose comprises two tubes disposed one within the other, at least one of the tubes being grooved. The ungrooved tube forms with the groove or grooves of the other tube continuous secondary ducts over the entire length of the hose. Inlet ports and outlet ports delimit in the secondary ducts sections of a predetermined length, each yielding a flow capable of continuously drip-irrigating a plant in the area to be irrigated. The outlet ports and the inlet ports are distributed along spiral lines if the secondary ducts are straight and along straight lines constituting generatrices of the hose if the secondary ducts run along spirals.

Abstract: A method and apparatus of making a plurality of flexible hoses each having a preformed bend section between opposed ends of the hose that tends to return to the shape of its preformed bend section when unbent therefrom are provided, the method comprising the steps of winding a continuous length of a hose material around a pair of spaced apart substantially cylindrical posts so that a plurality of sections of the hose material extends between the posts, heat curing the hose material while the same is in the wound condition thereof on the posts, and, thereafter, cutting the plurality of hoses from the thus cured hose material so that each hose has the preformed bend section therein that was defined by its wound relation with the post, the step of winding the hose material around the posts comprising the step of orbiting the posts about an axis that is substantially parallel to the longitudinal axes of the posts.

Abstract: Preparation of a novel polyester fiber, such as a poly(ethylene terephthalate) fiber, having at least one continuous groove wherein the surface of the groove is rougher than the surface outside the groove is accomplished through a drafting process involving surface hydrolysis. The fibers have improved cover, softness, and wetting characteristics.

Abstract: A method of extruding a ceramic batch supplied from a vacuum auger machine into a formed body by a plunger molding machine, included the steps of loosening and crushing a supplied ceramic batch in the vacuum auger machine, extruding the loosened and crushed ceramic batch from the vacuum auger machine into a formed columnar body which is of a size able to be inserted into a cylinder of the plunger molding machine, and extruding the formed columnar body from the plunger molding machine to form a formed body of a predetermined shape. An apparatus for extruding a ceramic batch includes a vacuum auger machine having of a vacuum kneading section for kneading a ceramic material to produce a ceramic batch, a columnar body forming section for forming the kneaded ceramic material into a columnar body, and a batch transfer section having an auger for transferring the ceramic batch to the columnar body forming section.

Abstract: In a process for the production of smooth surfaced parts, a paste material, which includes paste or granule pieces which are coated with added pigment and then pressed back together, is applied, in the form of an extrusion or a coating, to a substrate. The extrusion or coating is subjected to a first, incomplete hardening, after which it is no longer flows freely under its own weight. The surface layer, containing added pigment, is then removed from a surface to be used. This surface is subsequently smoothed, and the hardening of the coating to form a hard material is completed. The smoothing and the completion of the hardening can occur in the same processing step as a shaping for the formation of separable shaped parts. The substrate can be inseparable from the hardened coating. The surface layer, containing added pigment, can be removed by mechanical means, solvents or abrasion by a suspension in liquid or air, if appropriate in the presence of ultrasound.

Abstract: An apparatus for making extruded film tube having joined to its inside surface a closure strip extending generally transversely, preferably helically, relative to the axis of the tube and the tube and closure strip being adapted to be converted into a ribbon sheet form with the closure strip extending as individual closure strip sections across the ribbon sheet form at longitudinally spaced intervals, and adapted for making bags.

Abstract: A process for forming discrete, shaped interlayer blanks comprising extruding thermoplastic melt into an endless, distortable straight-sided sheet having a gradient color band along one side, the melt forming the region of the sheet laterally of the color band extruding at a greater thickness than that forming the portion containing the color band, stretching the side of the sheet containing the region formed from the greater thickness melt more than the other side while extrusion continues to shape the sheet into an arcuate form of substantially uniform thickness having different radii along each edge, the edge of greater radius being on the side formed from the greater thickness melt, quenching the sheet to set the polymer, advancing the shaped sheet to a cutting station and cutting shaped quadrilateral sections out of the sheet having the gradient color band along one longitudinal side to form the blanks.

Abstract: Non-flammable, high-temperature resistant polyimide fibers have irregularly lobed or serrated cross-sections, a wool-like smooth hand and high brightness. They are produced by a dry-spinning process which is carried out in a spinning column, wherein a 20 to 40% solution of the polyimide is spun from spinnerets having circular orifices, the orifice numbers ranging from 20 to 800 and the orifice diameters from 100 to 300 .mu.m. An extrusion speed of between 20 and 100 m/min, a take-up speed of between 100 and 800 m/min, an amount of spin gas between 40 and 100 m.sup.3 /h under standard conditions and a spin gas temperature of between 200.degree. and 350.degree. C. are applied. The tows leaving the spinning column, which contain residual solvent from 5 to 25% by weight--based on dry polymer--and have a single filament titer of between 3.

Abstract: Shaped articles, especially ones containing a plurality of fine through passages, are made from a composition containing a refractory particulate material by extrusion, cutting the extrudate, while vertically hanging or suspending into lengths while in the green deformable state by a high velocity water jet, and then calcining to bind the refractory particles together. Depending on the nature of the refractory material, the articles are of use as catalyst supports or precursors, adsorbents, or absorbents. The extrudate is extruded horizontally and allowed to sag into a gap between the extrusion die and a transport device, which is driven positively to maintain the degree of sag within predetermined limits, and the frequency of cutting depends on the rate of movement of the transport device.

Abstract: A process for making a reinforced tubular product, especially a catheter, in a single extrusion step. A reinforcing member is heated when applied to an extruded thermoplastic catheter body of about its finished size which is softened by heating while tensioning the reinforcing member to control the surface deformation or penetration of the catheter wall by the reinforcing member to produce an irregular surface contour on the catheter body. The catheter body is then smoothed in a sizing die burying the reinforcement to form the finished product. The heating step may be in addition to or substituted by a curing step when a thermosetting or crosslinking material is used for the body. The reinforcement may be braid, or a helical wrap of one or more members applied at one or more controlled angles relative to the axis of the catheter to control the strength and torque transmission efficiency of the catheter.

Abstract: Shaped ammunication for tubular weapons in the form of nitrocellulose-based combustible cartridge cases are continuously produced in a screw extruder from an aqueous suspension, stabilizers, flammable fibrous material, binders and optionally plasticizers being supplied to the suspension. The fibre-like constituents are matted in kneading and pressing zones, accompanied by the simultaneous squeezing out of the water, being shaped to an endless tubular structure, which is then cut to the length of the individual cartridge cases and is optionally also pressed to the desired dimensions and shape. Advantageously use is made of a double shaft screw extruder with kneading and pressing segments, as well as a water outlet, which is provided at its end with a tubular die. A following pressing and cutting to length means is arranged behind the extruder.

Abstract: A method of preparing a plurality of thermoset resin preforms by extruding a rod, cooling the rod to retain its dimensional uniformity and to reduce further curing of the resin, forming a plurality of grooves in the rod, and fracturing the rod at the grooves to yield the preforms.

Abstract: An apparatus for molding of plastic products in which a softened plastic material is extruded from an extruder in the shape of belts or rods, the extruded material is introduced onto a main molding roll having an outer surface with a contour of the piece to be molded and the plastic material is formed into a shape corresponding to the outer surface of the main molding roll by utilizing the fluidity of the plastic material, followed by rapid cooling, to produce a plastic product having a curved shape.

Abstract: An apparatus for making soap comprising, an extruder having a device for passing the soap toward a downstream portion of the extruder, an orifice plate adjacent the downstream end of the extruder having a relatively dull edge defining an opening to form an extrudate of the extruder, and a trimmer plate spaced dowstream from the orifice plate and having a sharp edge defining an opening sufficiently small to trim an outer portion of the extrudate and form a well compacted residue for recycle and desired surface characteristics of the soap.

Abstract: A process of forming biaxially oriented tubular articles by repeatedly performing a cycle of operations which includes engaging a thermoplastic tube by a first clamping member over a first region at a trailing end of the tube and engaging the tube by a second clamping mechanism over a second region at a spacing from the first region so as to define between the clamping mechanisms a portion of the tube to be longitudinally stretched and radially expanded; moving the clamping mechanisms apart to stretch the tube portion therebetween longitudinally; admitting pressure fluid into the tube portion to expand it radially and form a biaxially oriented bubble adjacent the leading end of the tube, and severing a substantial part, but not all, of the bubble from the tube to form the tube with a radially outwardly flared end as the leading end of the tube for the succeeding cycle of operations.

Abstract: A new and improved method of forming slats for window blinds and the like from a continuous web of plastic material includes a feeder for directing the web longitudinally from a roll at a selected speed rate into a heating chamber including upper and lower plates defining a longitudinally extending heating path between opposite inlet and outlet ends. As the web moves along the path, opposite surfaces thereof are heated to an elevated temperature and the web material then moves into a molding and cooling chamber immediately adjacent the exit end of the heating chamber wherein the web is molded to provide a curved transverse cross-section while the web is cooled. The web is cooled to a temperature at a level selected to provide a permanent set in the longitudinally traveling web.

Abstract: A process of stretching tubular nets or plates made of extruded plastic material according to one or two directions at right angles to each other and an equipment for carrying out the same wherein said process consists in dipping the tubular net or plate into heated water, in causing it to be fitted on a substantially flat and wedge-shaped means, dipped into heated water too, and in cutting said net or plate close to at least one of the sides of said wedge-shaped means; and wherein said equipment consists of a substantially flat and wedge-shaped means disposed on a bearing casing and defined by a plurality of driving and idler pulleys disposed symmetrically two by two with respect to a vertical median plane of the equipment, in order to substantially define a wedge, said pulleys being drivingly connected to each other by at least a driving belt.

Abstract: Apparatus for preparing seamless, creaseless, pliable, thin-walled tubes comprising means to extrude a moving continuous tube of polymeric film material from a die, means to radially stretch the continuous tube as it emerges from the die, means to longitudinally stretch the tube, and means to sever the tube while the tube is in motion to form tube segments while maintaining the tube substantially free of creases. This apparatus may be employed in a process to prepare seamless, creaseless, pliable, thin-walled tubes.

Abstract: In the manufacture of roof tiles comprising extruding a continuous shaped ribbon of tile forming material onto a succession of pallets, and cutting the ribbon where pallets adjoin to form individual green state tiles on pallets, there is performed the step of causing a cutting tool to engage with the upper surface of the ribbon only for part of the length of each pallet whereby a recess is formed in the upper surface of each tile. In a particular embodiment the recess is a channel cut in the tile at a location immediately downstream of the extruding step. The recess is also subsequently smoothed by applying a smoothing roll thereto.

Abstract: A method and apparatus for forming a drum handling ring having an inverted frustoconical geometry to facilitate engagement of a conventional parrot beak gripper with the ring. The end of an advancing, straight strip of heated thermoplastic material, continuously provided by an extrusion head, is fed at a first location to the circular periphery of a continuously rotating, large diameter turntable where the strip is clamped thereto and then cooled so that the clamped portion of the strip thermally sets into an arcuate shape corresponding to the periphery of the turntable. At a second location diametrically opposed to the first, the now arcuate end portion of the strip is unclamped and guided away from the turntable periphery to a cutting station where the continuously advancing strip is cut into arcuate pieces each having an arc length generally corresponding to the desired circumference of a drum handling ring.

Abstract: Damage to the natural tone of acrylic fibres, produced according to a continuous dry spinning process, can be avoided if from 0.025 to 0.2% by weight of ethylene diamine tetra-acetic acid, based on the fibrous solids material, is added to the spinning solution.

Abstract: An extruder delivers an extrudate at a temperature in the low end of the extruding range between 250.degree. and 550.degree. F. between opposed rollers carrying mating dies. The dies are sprayed with mold release agent when away from the extrudate. The extrudate is cooled after leaving the region between a pair of rollers and may enter the region between other similar pairs of rollers. Cold plastic inserts may be inserted into molded items.