Abstract: A sheet of plastics material is continuously extruded onto the upper run of an endless conveyor which carries aluminum vacuum mold plates each defining a cavity with a shingle pattern. The sheet is progressively vacuum-formed into the mold plate cavities, and opposite longitudinal upper and lower portions of the sheet are progressively vacuum-formed, with traveling plug assist in one embodiment, to define shingle panels with hook-shaped lower portions and upper portions defining grooves for receiving the lower portions. The upper portion of the sheet is punched with longitudinally spaced slots to form a nailing flange, and the sheet is then cut laterally at longitudinally spaced intervals to produce elongated siding panels each having integrally connected shingle panels. The shingle panels may have different bottom configurations or profiles and are interchangeable.

Abstract: A process for the manufacture of an environmental friendly paper from about 56% to about 80% by weight of inorganic mineral powders, about 43% to 18% by weight of polyethylene, and about 1% to 2% by weight of additives is provided. A composition for the manufacture of an environmental friendly paper, comprising about 56% to 80% by weight of inorganic mineral powders, about 43% to 18% by weight of polyethylene, and about 1% to 2% weight by additives is also disclosed.

Abstract: An improved process for producing polybutadiene golf ball cores is disclosed. The golf ball cores are from polybutadiene rubber compositions having a high Mooney viscosity and/or a high molecular weight and a low dispersity is disclosed. An apparatus for producing the polybutadiene golf ball cores is also disclosed. The apparatus includes an internal mixer that compounds a batch of golf ball core stock. A sheeter forms sheets of golf ball core stock and has a sheeter inlet proximate the mixer outlet and a sheeter outlet. A preform shaper forms golf ball core preforms from the sheets of golf ball core stock.

Abstract: The invention provides synthetic polymeric fibers which have utility as temporary acquisition/distribution absorbent structures and permanent storage/distribution absorbent structures in a wide range of absorbent products such as diapers, feminine napkins, and adult incontinent pads. These fibers are short, highly distorted, and bulky characterized by lengths between 2 and 37 mm, short-range distortion factors between 5 and 70, long-range distortion factors between 0.05 and 0.9, and single fiber bulk factors between 0.5 and 10.0. They may or may not have capillary channels on the surface. The advantages of these materials are their increased absorbency, reduced wet collapse at low densities, reduced rewet, reduced loss of liquid under pressure, and their ability to be desorbed by distribution materials such as capillary channeled fibers or by conventional storage materials such as fluff pulp or superabsorbent polymer fiber or powder.

Abstract: An extrusion process and apparatus is described for the manufacture of a thermoplastic resin-filler composite product having a desired resin-filler mixture comprised of 60-20% by weight of a thermoplastic resin and 40-80% by weight of a filler. A resin-filler mixture, in homogeneous form, is extruded through a die at a temperature above the softening point of the resin to form an extrudate having a desired cross-sectional shape. The extrudate is then passed through a die land at a temperature of above the softening point. From the die land the extrudate is cooled in a cooled shaper and transferred thereto through a thermal barrier insert member which is disposed in contact between the die land and the cooled shaper whereby radial pressure to counteract radial expansion tendencies of the extrudate is maintained during the passage. The cooled shaper cools the extrudate to a temperature of about at least 20° C. below the softening point of the resin.

Abstract: A method and apparatus for forming a flanged polytetrafluoroethylene cuffed section from a tubular polytetrafluoroethylene graft. The flanged polytetrafluoroethylene graft is well suited for use as a distal bypass graft, for arteriovenous grafting, or as a hemodialysis access graft. The graft includes an integral terminal polytetrafluoroethylene flanged skirt or cuff section which facilitates an end-to-side anastomosis directly between an artery and the polytetrafluoroethylene flanged graft without need for an intervening venous collar or venous patch.

Abstract: A method for producing colored concrete bodies, particularly colored concrete roof tiles, whereby pigment is added to the unprocessed concrete mix. In order to provide the production of permanently colored concrete bodies with reasonably priced pigments which are stable in outdoor exposure and are resistant to light, particularly UV, alkalis and heat. A cement compatible aqueous polymer dispersion in which organic pigment is dispersed is added to the unprocessed concrete mix. Suitable cement compatible polymer dispersions are aqueous polymer dispersions based on styrene and/or pure acrylate. Phthalocyanine and quinacridone pigments are particularly suitable as organic pigments.

Abstract: For the manufacture of bristle material for brushes with different types of plastic bristles, which are produced as continuous monofilaments by extrusion, different types of continuous monofilaments are combined in the composition desired for the finished brushes into a mixed strand and wound up and subsequently from the mixed strand is cut the bristle material required for the brushes.

Abstract: The present invention relates to a method of forming ornamented plastics articles and to articles formed by the method and relates especially but not exclusively to manufacture of items of furniture, building components and picture frame members. The method comprises firstly extruding a plastics article then re-moulding it in a hot stamp press. This enables highly complex forms of article to be manufactured with large dimensions and at much lower cost than is currently possible.

Abstract: A thermoplastic polyester resin is fed into a twin extruder, wherein a resin is heated for melting, thereby removing moisture in the resin by evacuating and sucking from a vent port thereof, injecting a foaming agent into the resin to which is pushed out as a foaming sheet and, after that, forming the foaming sheet which is divided into a forming body and a trimming loss, whereby the trimming loss is crushed to obtain crushed materials which are provided so as to put the materials into the twin extruder as collection materials and recycle them.

Abstract: A tear/puncture resistant material made of polyethylene and polypropylene. The material is ideally suited for wrapping steel or many other uses. The material of the present invention includes four layers attached by lamination. The outer layer is woven polyethylene, which imparts tear resistance to the material. This outer layer is laminated to a layer of extruded polyethylene. This layer, which provides breaking and puncture resistance to the material, is laminated to a layer of polypropylene, which provides additional elasticity. The layer of polypropylene is laminated to an inner layer of polyethylene impregnated with a volatile corrosion inhibitor (VCI) such as sodium nitrite. This inner layer, which increases the puncture resistance of the material, provides corrosion protection to the wrapped object, e.g. a steel roll.

Abstract: A method and apparatus is provided for the in-line production of composite strand material and the conversion of at least a portion of the strand material into a composite product. The apparatus (10) includes a combining station (48) where glass fibers (14) with a second polymeric material (66) are combined to form composite strand material (16), and at least one mold (54) for receiving a portion of the composite strand material and forming the portion into a composite product. The apparatus also includes transfer equipment for moving the composite strand material from the combining station to the mold, which may include a computer-controlled robotic arm (52). In another embodiment, the apparatus includes a collecting device (18) for accumulating the composite strand material (16) in looped form and equipment for delivering the accumulated portion from the collecting device to the mold (54).

Abstract: With an auxiliary electrode having a shape corresponding to the end of a workpiece attached to an upper electrode of a high frequency heater for high-frequency heating the end of the workpiece extruded, the workpiece is high-frequency heated intensively and uniformly between the auxiliary electrode and the lower electrode. After heating, the end of the workpiece is molded into a predetermined shape by a couple of stamping molds.

Abstract: The invention is concerned with a process for the production of cellulose fibers wherein a solution of cellulose in a tertiary amine-oxide is extruded through spinning holes of a spinneret, whereby filaments are extruded, the extruded filaments are conducted across an air gap, a precipitation bath and a drawing device whereby the filaments are drawn, the drawn filaments are further processed into cellulose fibers, the drawn filaments being exposed during further processing to a tensile stress in longitudinal direction not exceeding 5.5 cN/tex.

Abstract: A corrugated plastic panel is produced by providing a plastic panel corrugation device whereby a plastic material is extruded, a cooled extrusion is formed by passing the extrusion through a cooling roller assembly, a corrugated extrusion is formed by passing the cooled extrusion through a forming roller assembly when the cooled extrusion has reached its impressionable temperature range, a corrugated extrusion is passed through a pulling roller assembly when the corrugated extrusion has reached its hardening temperature range, and a corrugated plastic panel is formed by passing the corrugated extrusion through an extrusion cutting assembly.

Abstract: An article comprising a hydrated matrix containing 100 parts by weight of cement and around 80-120 and preferably around 100 parts by weight of sand with a grain size of less than 1 mm, and alkali-resistant reinforcing glass fibres in a proportion of around 3-4 wt %, preferably 3.5 wt %, relative to the hydrated matrix. The article, which has a density no greater than 1.85, may be used as a covering panel for buildings, and particularly as an imitation slate covering panel.

Abstract: This details a production method for a blade for electrophotographic devices, made of thermosetting type polyurethane, including the steps of mixing and stirring the liquid polyurethane prepolymer which is a raw material component for a thermosetting type polyurethane polymer and the liquid crosslinking agent, discharging the mixture thereof into a die having a concave cross section in a molding drum, heating it via an endless belt which is in contact with the outer peripheral face of the molding drum and runs with the rotation of the drum 20 to continuously mold a banded blade molding S having a prescribed width, and cutting the blade molding to a prescribed length after cooling it down.

Abstract: High resiliency biodegradable starch-based extruded products and methods of manufacturing those products are provided. In particular, extruded starch products processed by rolling provide excellent resiliency, abrasion resistance and other properties attractive for use as packaging materials.

Abstract: A method for making a flexible carrier tape for storage and delivery of electronic components by an advancement mechanism is disclosed. The tape includes a strip portion having a top surface, a bottom surface opposite the top surface, and a device for engagingly receiving the advancement mechanism; and a plurality of aligned pockets for carrying the electronic components. The pockets are spaced along the strip portion and opening through the top surface. The device for engagingly receiving the advancement mechanism includes a plurality of hollow protuberances that are spaced equally along the strip portion, open through the strip portion, and extend outwardly from the strip portion. The protuberances are adapted to receive the advancement mechanism within the hollow portion. The method includes simultaneously thermoforming the pockets and the protuberances to provide excellent registration therebetween.

Abstract: A method for manufacturing a hinged sheet having an inorganically filled structural matrix includes mixing together a water-dispersible organic polymer binder, an inorganic aggregate material, a fibrous material, and water in order to form a moldable inorganically filled mixture in which the components therein are substantially homogeneously dispersed. The inorganically filled mixture is formed into a substantially hardened sheet having an inorganically filled matrix in a manner such that the water is removed by evaporation. The sheet is then scored to form a hinge in the inorganically filled matrix. Alternatively, a score can be pressed into a surface of the sheet prior to drying in order to form a scored sheet which is then dried.

Abstract: A system for the continuous production of asphalt-based roofing shakes which are tapered and embossed to resemble wood shakes in looks and function; and the shake made thereby. The continuous production system hot-mixes and extrudes the ingredients in a tapered layer on a conveyor belt for embossing and cutting. The system permits wood-shake type variety in size and appearance. The preferred shake includes perlite as a filler and chopped glass fibers as a reinforcer and may be internally colored.

Abstract: A process for fabricating an article having a rigid foam core and a resilient outer plastic shell by extruding heated thermoplastic material to form the shell, partially hardening the extruded a plastic shell, injecting a liquid foam material into the interior of the partially hardened plastic shell, and cooling the shell and the liquid foam material to fully harden the plastic shell and the foam under conditions which cause the article to have a predetermined shape and size.

Abstract: This invention produces three-dimensional shapes such as window lineals by first lining a foam die with a continuously moving reinforcing veil. Once the veil is in the foam die, a foam is blown into the die. The foam expands in the die forcing the veil against the die wall. The veil is selected so that the foam never fully penetrates the veil, but adheres to it. The material exiting the foam die is now properly shaped to enter the curing die. Resin is then injected onto the foam core where it penetrates the veil, is cured in the heated curing die and exits as a finished product of a plastic skin adhered to a foam core with a veil sandwiched therebetween.

Abstract: Sheath-core bicomponent fibers comprising a core of a low-cost, high strength, thermoplastic material, preferably polypropylene or polybutylene terephthalate, completely covered with a sheath formed of polyethylene terephthalate or a copolymer thereof are produced, preferably melt blown to an average diameter of 12 microns or less, and formed into a self-sustaining, three-dimensional, porous element having various applications, principally as an ink reservoir element for a marking or writing instrument, although the porous element may also find utility as a tobacco smoke filter. Other forms of the product have utility in diverse applications where its excellent capillary, absorption and filtering properties are advantageous. The resultant products retain or improve upon the desirable features and processing capabilities of conventional elements, but are substantially less expensive, requiring less high cost polyester for equivalent or better properties.

Abstract: Pre-stressed concrete railroad ties are manufactured by the slip form process in the absence of mold members, other than the slip form itself. Tie casting occurs on portable casting soffits between portable soffit anchored deadmen supporting the pre-stressed tie tensile members immediately overlying the casting soffit. Tie formation occurs with the slip form passing around and over the pre-stressed tension members. Track fastening hardware is vibrationally inserted through windows of the slip form to place the track fastening hardware to precise measured dimension along the route of slip form movement and to configure that portion of the tie adjacent the track fastening hardware. End of tie locations as well as tie batch identification are likewise marked during the slip form process. Upon cure, the ties are cut at their marked end location.

Abstract: Crimped fibres of solvent-spun cellulose are made and checked for damage in a method in which:i) cellulose is dissolved in an amine oxide solvent to form a hot cellulose solution,ii) the hot cellulose solution is extruded through a die assembly to form a tow of continuous filaments,iii) the tow is passed through a water bath to leach out the amine oxideiv) the tow is crimped by passing through a stuffer box in which it is compressed to apply crimp,v) dry steam being injected into the stuffer box during the crimping process, andvi) the crimped tow leaving the stuffer box is passed through detection means in whichvii) a beam is projected across the path of travel of the tow and is received by receiving means on the opposite side of the tow, the receiving means being calibrated to initiate a signal if obscurement of the beam by the tow varies beyond a predetermined amount.

Abstract: A method of making the tile dispenses wet concrete having two different colors into a partitioned pug box for disposition onto opposite sides of a pallet, so that, the two different colors reside on opposite sides of the pallet in side-by-side relation. The wet concrete is metered and compressed by a roller and shaped by a slipper to provide the concrete tile with a desired cross-sectional shape, following which the concrete is then chopped by a knife assembly to form the individual tiles with desired edge configurations. The concrete is cured and then removed from the pallets to form the completed tiles. The method may be incorporated into a continuous process in which a succession of the pallets are passed by a conveyor beneath a making head assembly containing the partitioned pug box and the roller and slipper and then beneath a knife assembly to form a succession of the concrete tiles.

Abstract: In a system for the production of solvent-spun cellulose tow, trash and other undesirable material is detected by a device which projects a light beam across the tow and a receiver for the beam which initiates a signal if the beam is obscured beyond a predetermined amount.

Abstract: Process and product for manufacturing continuous fiber reinforced sheets and shapes. A pressurized extrusion process consisting of a paired and edge enclosing doctor blades that remove feed material from a pair of pinch rolls and contain such in an optimally heated environment and which provides suitable hot dies and enables extrusion of continuous reinforcements, cores or threads to be contained in the extrudite. Hopper feedable plastic pellets containing reinforcing fibers which are longer than the largest pellet dimension are disclosed. The fibers in an elongated web of fiber reinforced plastic are caused to be wrinkled or folded prior to cutting the web into pellets. One form of apparatus includes a set of conveyor rollers for moving the web, with later rollers moving more slowly that the input rollers, in conjunction with a crowding doctor blade which forces the web with a creping action from the input rollers.

Abstract: A method of forming an elongated trim strip product includes 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. Further, while passing between the rolls a logo or lettering is formed on the strip. 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: Method of manufacturing a dental aspirator by extruding a continuous tube with a bellows portion. The tube is angled to form a number of folds, each of which consists of two cup-shaped portions having concave surfaces facing each other. One cup-shaped portion is made smaller than the other, allowing them to be snapped together. The bellows are formed from the tube wall by chilled mold chains. At the same time, the tube is profiled to form an end portion at the suction end of the finished aspirator.

Abstract: A hollow, heat-recoverable article 1, for enclosing objects such as electronic components etc. has a thermoplastic lining on its interior surface and includes a fusion bonded portion 2 in which different parts of the article have been brought together and bonded by fusion of the lining with substantially no welding of the heat-recoverable material forming the wall. The lining has a melting point that is higher than the recovery temperature of the article, thereby enabling subsequent recovery of the article without rupture of the bonded portion.

Abstract: In a process for manufacturing finite extruded profiles (3) from elastomer material with at least one projecting sealing lip (12) of different contour (32) over the length of the profile, for simple and very accurate manufacture the invention proposes that by means of two needles (10, 11) which act laterally on the sealing lip (12) and whose depth of contact (a) is controlled by a cam disk (5), the specified contour configuration (32) in the corresponding profile area (12) is incised in the form of grooves and the projecting profile section (38) severed after vulcanization (FIG. 1).

Abstract: A method for producing polymeric tubing which is resistant to permeation by organic material contained therein which has at least one region defined by a plurality of outwardly extending annular ridges. In this method, tubular polymeric material having a first outer diameter and composed of at least three overlying polymeric layers is introduced into a mold device upon exit of the tubular polymeric material from a suitable extrusion device, the surface of the mold device having at least one region defined by an annular depression in an essentially cylindrical surface. Once the tubular material is introduced, it is expanded to a second outer diameter such that the tubular material deformably contacts the mold surface. The corrugated tubular material then exits from the die device after completion of the expansion step.

Abstract: The production process of the present invention can significantly suppress the fuzzing on the surface of the composite material and substantially prevents the accumulation of fractured fibers in the nozzle causative of the breaking of a strand and so on, so that it becomes possible to enhance the take-up speed of the strand and so on, and can provide a long-fiber-reinforced composite material excellent in the dispersion of the fibers in the composite material and the impregnation of a resin. The process comprises impregnating a continuous reinforcing fiber with a molten thermoplastic resin while pulling the fiber, and is characterized in that, after the fiber is impregnated or coated with a molten resin, the resultant fiber is continuously pultruded while squeezing excess resin and the pultruded fiber is passed through a shaping nozzle to regulate the shape to a desired one.

Abstract: Apparatus for forming a net device for encompassing a balled end of a tree includes an extruder from which a continuous strip of plastic material is discharged, a compression section for embossing a pattern on at least one surface of the strip, a tensioning section for providing a tension on the pattern strip and a cutting section for cutting the strip into narrow elongate net devices.

Abstract: A seamless tube useful in making a roofing batten is extruded from a polymeric material consisting essentially of a major amount of poly(ethylene terephthalate) and a minor amount of at least one polyolefin, flattened in a vacuum sizer so as to define two plies, and milled and drawn so as to orient the tube longitudinally. As milled and drawn, the tube is oriented so as to have a tensile strength of at least about 25,000 psi in a longitudinal direction. The plies are punched so as to have holes therethrough at spaced intervals along the tube. When used to make a roofing batten to coact with conventional fasteners, such as roofing screws, the tube exhibits superior characteristics of split resistance and pull-through resistance.

Abstract: A method of forming an elongated trim strip product by 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: Production line and method for manufacturing strips of foil stabilized plastics moldings featuring a rotary reform machine that has a pair of reform wheels that are rotatably driven to profile the extrudate while matching the output speed of extrudate exiting from the extrusion die of a plastics extruder. The wheels have equal diameters and are motor driven at the same angular velocity so that forming dies in the wheels synchronize and cooperate to pressure mold spaced sections of the extrudate feeding therethrough to form high quality end corners with an offal section therebetween. A haul-off pulls the strip from the extruder die, the rotary reform machine, a water trough and flash trimmer and into a cutter where the offal is removed. The strip is maintained under a predetermined tension load by use of an adjustable friction brake on the stabilizer foil so that the heated plastics exiting the extruder will be uniform in initial profile, providing high quality extrudate feeding into the reforming wheels.

Abstract: A method is provided for forming an apex filler including extruding a substantially linear elastomeric strip having a base and a pair of sidewalls converging from the base to an apex. The sidewalls of the elastomeric strip are then engaged with a nip presented by a pair of opposed frusto-conical rollers and a base support. The rollers are rotated to work the elastomeric strip whereby the base of the strip is rotated at a first linear speed, the apex is rotated at a second, greater speed and the sidewalls are rotated at linear speeds substantially proportional to the distance from the base to the apex, thereby forming an apex filler.

Abstract: A generally continuous strip of thermoplastic material is cold formed into a desired preformed configuration while retaining continuity with the generally continuous strip to form a chain of preformed configurations remaining continuous with the generally continuous strip of thermoplastic material. End portions of the chain are severed so as to form a cartridge of preformed configurations to be used in the formation of a cartridge of fitments.

Abstract: A seamless tube useful in making a roofing batten is extruded from a polymeric material consisting essentially of a major amount of poly(ethylene terephthalate) and a minor amount of at least one polyolefin, flattened in a vacuum sizer so as to define two plies, and milled and drawn so as to orient the tube longitudinally. As milled and drawn, the tube is oriented so as to have a tensile strength of at least about 25,000 psi in a longitudinal direction. The plies are punched so as to have holes therethrough at spaced intervals along the tube. When used to make a roofing batten to coact with conventional fasteners, such as roofing screws, the tube exhibits superior characteristics of split resistance and pull-through resistance.

Abstract: A method and apparatus for producing light-weight construction panels having a cementitious core layer surfaced with a layer of reinforcing fabric bonded to the two faces of the core includes the use of slurry applicator having a supporting member and a doctor in addition to a moving carrier for the slurry coated fabric. The edges of the panel also are covered with the fabric and may be open mesh edges. Cementitious slurry, for example, portland cement slurry, is applied to the fabric by means of a supporting member over which the fabric is drawn and a doctor means adjustably mounted above the supporting member. The supporting member is of a non-base-reactive material such as polypropylene or stainless steel; the use of such a supporting member permits better application of the slurry to the fabric before placement of the slurry coated fabric on the moving carrier.

Abstract: A device (10) for crimping and cutting dough ropes into pillow-shaped longitudinal lengths is disclosed including a cutting roller (12) and an anvil roller (14). The peripheries (22, 24) of the rollers (12, 14) include a plurality of axially extending, spaced, parallel, linearly straight lands (26, 30) separating, forming, and defining a plurality of grooves (28, 32) therebetween. Compressible tubes (46) are stretched between end plates (36) located on the opposite axial ends of the cutter roller (12) and positioned in each of the grooves (32) thereof. The tubes (46) are compressed in the grooves (32) by the dough ropes as they are being crimped and cut by the abutment of the lands (26, 30) of the rollers (12, 14) together and expand and force the pillow-shaped longitudinal lengths of dough from the grooves (32) when the lands (26, 30) of the rollers (12, 14) separate.

Abstract: A method for manufacturing an automobile trim component includes the step of coextruding a plastic unfoamed material and foamed material into a multilayer parison, which is thereafter blow molded to a desired form. After the layers are cured, the article is removed from the blow mold and sectioned into multilayer skin halves, and one skin is placed in an injection mold. The core resin, either thermoplastic or thermoset in nature, is then injected into the injection mold and onto the skin, and then compresses the resin against the skin to produce a shell comprising a resin core layer, intermediate foam layer, and decorative outer layer.

Abstract: A thin ribbon of paint film is guided and applied directly to hot thermoplastics extrudate just as it exits the extrusion die by a film curving and guide plate and then by a film application wheel that is adjusted so that the film mates with and is laminated to the extrudate with an adhesive bond between the paint film substrate and the extrudate. This eliminates the need for high gloss, high metallic content thermoplastics for use as extrudate such as currently used for finished automotive side molding and allows reground thermoplastics to be used as the extrudate and finished with a paint film covering. The thermoplastic extrusion molding is then compression formed in a preform operation to establish end corners with selected radii for corner sharpness as well as reshape the part cross section. This is accomplished with a die and end cap construction which can be relatively adjusted to provide effective gas venting around the end of the die cavity on die closure.

Abstract: A process for making gelatine films, in particular sheet gelatine, from powdered gelatine includes the following steps: The powdered gelatine with the addition of water is plasticized by the application of shearing forces at an elevated pressure and an elevated temperature, the plasticized mass is pressed in the form of a film through a slotted die, the film is drawn off the slotted die under tension and the taut film is dried.

Abstract: The present invention is directed to a door weather strip in which the corner portions thereof are integrally formed with straight portions thereof. In order to obtain a predetermined sealing interference, the cross sectional shape of the corner portions of hollow sealing portion and the lip seal of the weather strip is arranged to be longer than that in the straight portion. Alternatively, the sealing portion is raised as to have a predetermined shape when the corners are formed. Said formed shapes are solidified by vulcanization after the weather strip has been plastically deformed before the vulcanization.

Abstract: A method for the operation of a thermoforming machine in which successive sections of a thermoforming web are formed includes the steps of continuously feeding a thermoformable web of plastics material into the entry of the thermoforming machine from an exit support roll of a substantially horizontal run portion of a conveyor, the exit support roll being movable forwardly in the direction of movement of the web and rearwardly in the opposite direction so as to respectively extend and retract the length of the horizontal run portion of the conveyor with the web flow speed at which the web is deposited initially on the conveyor and with the movement of vertically opposed male and female forming tools which are part of the thermoforming machine and which are able to advance and retract horizontally respectively in and against the web movement direction and to move vertically perpendicular to their horizontal movement.

Abstract: A continuous, non-hesitant apparatus and process for producing a molded body of plastics material and for simultaneously securing the molded body to a tubular body by means of a plurality of heading units mounted in series on a continuous conveyor, each heading unit having a mold cavity associated with the mold arm slidably positionable with respect to a mandrel arm having a mandrel, press rod and mold core secured thereto, the mold core and press rod in coaxial alignment with the mold cavity, each of which responsive to a camming surface, the tubular body positioned on the mandrel and brought in registration with a continuous web of hot plastics material which is positioned at one end of the tubular body, the tubular body and mold core then positioned within the mold cavity responsive to the camming surfaces for a time sufficient to form the molded body and secure the molded body to the tubular body, the molded body and tubular body then released from the heading unit, the heading unit recirculating to obtai