Abstract: A material transfer arrangement having a pair of generally cylindrical adjacent rolls which are counter-rotatable about their respective cylindrical axes and which define therebetween a nip between which material passes is disclosed. There is a corresponding pair of spaced apart doctor blades, each in close proximity to a corresponding one of the rolls so that material may be conveyed between the roll nip and the space between the doctor blades. In one form, the nip passes material to the space between the doctor blades and that space has a downstream restriction which causes the material to compress in an accordion-like way forming a corrugated material web. In another form, the doctor blades function to deliver thermoplastic extrudate to the nip between the rolls to form elongated sheets or webs of plastic material of improved uniformity.

Abstract: A film extruder employing an internal deckle system including a pair of rectangular metal bars disposed in the pre-land area of the die one above the other with the opposing edges of each bar having a tapered surface. The tapered surfaces cause the bars to increase or decrease the total with of the flag when one of the bars is moved and to provide sufficient sealing pressure to effectively seal off the pre-land area. Preferable, the tapered wedge flags are disposed below the usual plug at each end of the extruder and apply sealing pressure against a deckle rod adjustably placed below the tapered wedge bars.

Abstract: Apparatus and method for controlling the size of a gap through which material is metered. The gap is defined by a rigid surface and a flexible surface connected to at least one actuator for deforming the flexible surface. A plurality of sensors are positioned along the rigid or flexible surfaces to detect the other of the surfaces and generate signals indicating its position. A computing unit in communication with the plurality of sensors processes the signals to generate a continuous gap measurement profile. The computing system also stores a pre-determined desired gap measurement profile. A control system in communication with the computing unit actuates the actuators to deform the flexible surface to adjust the gap measurement profile to correct any deviation from the desired gap measurement profile.

Abstract: An extrusion die for extruding biodegradable material into a flexible, pliable and non-brittle structure, the extrusion die including: a cylindrical mandrel; a cylindrical outer ring positioned concentrically around the mandrel; an annular extrusion orifice between the mandrel and the outer ring; and a flow control device which controls flow of biodegradable material through the extrusion die, wherein the flow control device comprises a mechanism which translates the outer ring to adjust the width of the annular extrusion orifice, and wherein the flow control device further includes a flow control channel upstream of the extrusion orifice which throttles flow of the biodegradable material through the die.

Abstract: A machine and method of extruding a fastener product is disclosed. The product has a continuous, sheet-form base and rows of discrete fastener elements that extend from a side of the base, and is formed by extruding a molten polymer through an extrusion die defining a die opening comprising a base opening for extrusion of the base of the product, and, contiguous therewith, a series of fastener element openings for extrusion of the rows of fastener elements, each fastener element opening having a profile configured to form oppositely directed sides of the discrete fastener elements of one row. While extruding the product, flow of polymer through the fastener element openings is periodically interrupted while continuing the flow of the polymer through the base opening, thereby forming rows of upstanding fastener elements integrally extruded with a sheet-form base. Fastener products formed by this method are also disclosed.

Abstract: The invention relates to a cross discharge head for extrusion equipment comprising a housing to be mounted on an extruder, which in its interior receives an annular feeding channel encompassing a passage, disposed in the housing and disposed at an angle to the direction of extrusion of the extruder, for the supply of a product to be ensheathed with the extrudate, which receives in its interior a distributor piece, and which at the exit is provided with annular outer shaping tools tapering the stream of extrudate, which are secured on the front face of the housing so as to be exchangeable, wherein the passage at the end side is encompassed by a conical guidance nipple whose outside is simultaneously also the inner shaping tool.

Abstract: A flat blow molding machine adapted to extrude flat hollow parison from clearance between a flat core and a flat die surrounding the core, characterized in that both ends of the die are slidable in a width direction with respect to a center, the core is replaceable in accordance with expansion and contraction of the die in the width direction. According to this construction, it is possible to change the width of the flat hollow parison extruded from the clearance between the core and the die by sliding the both ends of the die in the width direction and replacing the core upon expansion and contraction of the core in the width direction. Further, if the flat core is constructed from a planar replaceable portion and curved (three dimensional) non-replaceable portions and only the planar replaceable portion is exchanged upon replacement, preparing a plurality of inexpensive-to-manufacture planar replaceable portions having different lengths is enough and the cost is reduced.

Abstract: An improved apparatus and method for forming a three-dimensional object by planar deposition of forming materials includes containers for holding molten forming materials, mechanical piston or screw members in the containers for pressurizing the molten forming materials in each of the containers, and an adjustable planar nozzle mechanism coupled to the containers through which the pressurized molten forming materials flow to form variable width planar jets that are deposited in layers onto a substrate movable along three axes to form the three-dimensional object. The adjustable planar nozzle mechanism includes cooperating position controllable plates for forming a variable width planar nozzle opening. The edges of the planar nozzle opening are advantageously non-parallel at the ends of the nozzle opening to ensure uniform thickness of the deposited planar jets.

Abstract: An extrusion head for a blow-molding apparatus has an annular and relatively rigid outer housing centered on a housing axis, a rigid ring axially fixed in the housing and shiftable radially of the housing axis in the housing, and a sleeve generally coaxially received in the housing and having an upstream end secured to the ring and a downstream end radially elastically deflectable transversely of the housing axis relative to the upstream end. A rigid core coaxially received within the sleeve in the housing has an outer surface defining an annular passage with an inner surface of the sleeve.

Abstract: A thermal actuator system controls the position of a moveable die lip (32, 34) on a flat film extruder die (30) to control the gauge of the extruded plastic film, and includes thermal actuators each of which has an outer thermal bolt (70) and an inner bolt (80) extending through the outer bolt. The inner and outer bolts have outer ends which are connected together, while the outer bolt is connected to the die body and the inner bolt has an operative end connected to a die lip. An air passage (90) is formed between the inner and outer bolts and through which air is applied for cooling the inner bolt with respect to the outer bolt. Thermal expansion of the outer bolt is controlled by an external heater (75) mounted on the outer bolt.

Abstract: An extrusion apparatus including a flexible lip for adjusting the lip gap, and including reciprocally movable members in operative contact with the flexible lip is described. Beneficially, a generally laterally movable actuator bar is connected to angled slots of the reciprocally movable members by pin members rotatably mounted in bores of the actuator bar. Lateral movement of the actuator bar advantageously results in lip gap control across the full width of the lip gap. Use of reciprocally movable members with slots of selected angles provides for profiling the lip gap. Also provided is an advantageous mechanism for controlling movement of the actuator bar and reciprocally movable members.

Abstract: An apparatus and a method for increasing the flow rate of a pressurized liquid through an orifice by applying ultrasonic energy to a portion of the pressurized liquid. The apparatus includes a die housing which defines a chamber adapted to receive a pressurized liquid and a means for applying ultrasonic energy to a portion of the pressurized liquid. The die housing further includes an inlet adapted to supply the chamber with the pressurized liquid, and an exit orifice defined by the walls of a die tip. The exit orifice is adapted to receive the pressurized liquid from the chamber and pass the liquid out of the die housing. When the means for applying ultrasonic energy is excited, it applies ultrasonic energy to the pressurized liquid without applying ultrasonic energy to the die tip.

Abstract: A method, process and apparatus for generating complex shapes without the use of dies, molds, or other fixed tooling. A continuous length or flow of a malleable or fluent material is provided to a forming apparatus which shapes the material, producing a contiguous series of smoothly blended, properly contoured portions of the desired shape. The formation of a shape relies on continuous control of shape-determining variables: the instantaneous cross-section of the shape in a virtual transition surface between the formable and formed material, the rate-of-change of cross-sectional dimensions between sequential cross-sections, the instantaneous angle of movement of the material at any point on the cross-section in the transition surface, and the rate of movement away from the transition surface of the just-stabilized portion of the shape. The material is stabilized as these shape-determining variables achieve the proper values in each portion of the material.

Abstract: A paste extruder includes a machine frame; an extrusion barrel seated in the machine frame and having an open end; an extrusion die connected to the open end of the extrusion barrel; and a mandrel rod which is arranged coaxially inside of the extrusion barrel, which has a mandrel tip, and which cooperates with the extrusion die, wherein the mandrel rod is comprised of a mandrel rod tube and an inner mandrel having a portion positioned proximate to the extrusion die which projects from the mandrel rod tube and having a portion arranged inside of the mandrel rod tube which has a first section arranged at a radial distance from the mandrel rod tube, and which has a second section rigidly connected with the mandrel rod tube, and wherein the first section has an elastic element which acts transversely to one of the axial direction or the direction of extrusion.

Abstract: By using a variable section extrusion die set which includes a die set (24) displaceable in a first direction orthogonal to an extrusion direction of a molding material and in a second direction perpendicular the first direction and adapted to vary an area of an extrusion molding hole (31) through which the molding material is extruded, and a mandrel (27) reciprocally movable in and out of said extrusion molding hole in the extrusion direction and provided on an outer peripheral portion thereof with a tapered portion (27B) which is gradually reduced in outer configurational dimension from one direction of the reciprocally moving direction to the other, said die set being moved to deform the extrusion molding hole (31) while pressing the molding material against said die set (24), and the tapered portion of the mandrel (27) being reciprocally moved in and out of the extrusion molding hole, extrusion molding of a tubular molding is thereby accomplished which varies in outer configurational dimension and inner c

Abstract: An extrusion apparatus includes first and second die body portions each having a main body and a lip interconnected with the main body wherein the die body portions are joined such that a single die outlet is formed between and bounded by the lips. The apparatus also includes suitable structure for moving the lips to adjust the die outlet.

Abstract: A die is formed with an opening having substantially the same shape as a fundamental cross-sectional shape of an extrusion member. A first core is formed with a projecting portion projecting forward beyond a front surface of the die. A movable die for changing the external shape of a sealing portion is disposed on the front surface of the die. The movable die is allowed to move between a position where a curved surface formed at the forward end thereof is kept away from the projecting portion of the first core and another position where the curved surface comes close to the projecting portion. Further, first and second movable cores are inserted in the opening of the die, these movable cores being moved forward and backward along the direction in which EPDM is extruded.

Abstract: Aa apparatus for manufacturing profile extrusion molded articles having a gradually transforming portion at which its cross section gradually changes includes a stationary die block having an aperture in a shape of the maximum cross section of the gradually transforming portion and a resin passage in communication with the aperture, an extruder extruding resin material of a gradually changing amount to an inlet of the resin passage, and flow direction controlling means for changing a flow direction of the resin material flowing within the resin passage in accordance with the extruding amount of the resin material. The manufacturing apparatus can produce profile extrusion molded articles without any bypass passage, avoid the resin material to be discharged outside the stationary die block, and prevent unsightly lines tracing a shutter movement from appearing on the design surface of the extrusion molded articles.

Abstract: An extruded "Y" or bifurcated tube having unitary construction and an extrusion apparatus therefor. The "Y" tube includes three separate tubes, each tube having a central lumen, and a transition portion integral with the tubes and providing physical connection and fluid communication between the individual lumens of the three separate tubes. The first of the three tubes has a first lumen and is first formed by extrusion through a convention extruding die. The extruder die then gradually bifurcates the first tube, providing a gradual transition between the first tube and the second and third tubes. The lumens in the second and third tubes thus formed remain in uninterrupted fluid communication with the lumen of the first tube. The bifurcation takes place with the first tube to form second and third tubes smoothly and over a transition distance which is easily controlled by the extruder die. The bifurcated second and third tubes are continuous with the first tube making the "Y" tube unitary.

Abstract: In a blow-molding system in which a parison programmer is coupled to orifice tooling in an extrusion die head for controlling wall thickness of an extruded parison fed to a blow-molding apparatus, a method of synchronizing operation of the parison programmer contemplates placement of observable indicia on the parison after the parison exits the die head. This indicia placement preferably is carried out under control of the parison programmer to place the indicia at a predetermined position along the parison profile, such that mis-positioning of the indicia indicates absence of phase synchronization of the parison programmer. The indicia is then observed on a molded article to determine phasing of the parison programmer relative to the molding apparatus, and operation of the parison programmer is adjusted to correct any mis-positioning.

Abstract: This invention concerns a device used in the process of manufacturing an automobile pane 1 equipped with a polymer frame 52 placed on the edge of the pane 1. The frame 52 is extruded onto the pane 1 which can be moved by means of a suitable support in such a way that the edge of the pane travels through a recess in an extrusion head 25 and 40. The recess of the extrusion head 40 preferably includes a U-shaped jaw 41 straddling the edge of the pane. At the front extremity of the two half-jaws of the U-shaped jaw 41 there are disposed sealing ledges or shoes 42 and 43 which are movable perpendicularly to the surfaces of the pane and which, during extrusion, bear upon the surfaces of the pane. Alternatively, the extrusion head can include a fixed jaw where the sealing ledges or shoes slideably and sealingly contact the plate.

Abstract: The extrusion head for plastics extruders includes a die head, which is disposed axially in the extrusion direction downstream from a jaw plate. The die head is divided in an at least approximately radial direction into a main part and an orifice part and the cones of the orifice part can be fixed independently of one another at the respectively adjacent cones of the main part and exchanged for other cones in a rapid operation.

Abstract: The present invention provides a die for molding a honeycomb structure, which can be molded without causing bending on a cell grid and which can readily cope with changes of shrinkage percentage of the product. The invention also provides a honeycomb structure, which has no bending on the cell grid and has high strength. The die according to the present invention includes a metal die 1, having a feed hole forming unit 14 provided with feed holes 15 and a slot forming unit 11 provided with slots 12, and a guide ring 2, which has an abutment surface 25 placed face-to-face to a part of the metal die 1 via a clearance sector 22. The slot forming unit includes an outer peripheral slot forming unit 130 and a main-body slot forming unit 160, and there is provided a protruded surface 17 protruded in extruding direction between a main body end surface 16 and an outer peripheral end surface 13.

Abstract: An apparatus for making a multi-portion mixing element for a static mixer is disclosed. The apparatus includes a base and a split die set having a first die and a second die in axial alignment which are rotatably mounted to the base. Each of the dies have an opening forming an extrusion pattern which mate with respect to the other. The dies are capable of rotating together so that the patterns are in an aligned position during rotation. The dies are also capable of rotating to a misaligned position. An extruder for extruding an extrudable material through the first and second dies is provided and a controller controls the rotational position of the dies during extrusion. The dies are rotated simultaneously during extrusion with the patterns aligned to form a mixing portion of the mixing element and are rotated to a misaligned position to create a space between the mixing portions.

Abstract: A thermal translator device providing improved performance and faster expansion response, is described. Also described is an extrusion apparatus including a plurality of thermal translator devices operatively arranged for thermally actuated, localized action upon the lip. The thermal translator device includes a thermal energy source disposed within a structural member. The thermal energy source and the structural member are an integral unit. Also described is an extrusion apparatus including tie rods for a support assembly otherwise without support.

Abstract: A coating apparatus comprises a head (25) having opposite edges (6, 7) cooperating with each other to provide an outlet (4a) of a coating liquid supply slit (4), and opposing portions (23a, 23b) between which a longitudinal recess (28) is formed, and a plurality of adjusting devices (30) having opposite ends (31, 32) engaged with the opposing portions of the head. A pulling or compressive force is developed between the opposite ends of each adjusting device so as to adjust the clearance (D) of the opposite edges. The adjusting means are movable in the longitudinal direction of the apparatus with their ends being engaged with the opposing portions of the head.

Abstract: An electric drive for controlling the die gap in a continuous blow molding head and the die gap and pushout in an accumulator blow molding head. The electric drive includes a programming screw for attachment to a programming rod for setting the die gap, a programming nut and an electric motor for rotating the programming nut. In an accumulator blow molding head, the electric drive further includes a shooting screw for attachment to a shooting rod for controlling pushout, a shooting nut and an electric motor for rotating the shooting nut. The programming screw and the shooting screw are coaxial with the programming rod passing through the shooting screw.

Abstract: An apparatus for producing an automobile windshield molding for sealing a space between a windshield and a periphery of a window opening of a vehicle body panel utilizes cooperating dies. The windshield molding comprises a pair of extruded side molding parts, a pair of extruded corner molding parts, and an extruded upper molding part integral with and extending between the side and corner molding parts. Each of the side molding parts associated with each side edge of the windshield is larger in thickness compared to the upper and corner molding parts, where a water drain channel is formed.

Abstract: An apparatus and method for making a grooved plastic spacer for a slotted core type telecommunications cable includes a helically shaped calibration member inserted into each groove after extrusion of the spacer to maintain the shape of the groove until it is sufficiently cooled. A telecommunications cable made according to the method includes a spacer made of plastic having a melt flow index equal to or greater than 0.65 g/10 min.

Abstract: The present invention provides an adjustable, leak-free sealing device for sealing the die orifice of a molten polymer die. The sealing device includes a sealing bar seated against and blocking a portion of the die orifice, a deckle holder slideably connected to one side of the die and extending under the die orifice, and a plurality of springs seated on the deckle holder and biasing the sealing bar against a portion of the die orifice. The springs have a combined spring force equal to or greater than the die orifice outlet pressure such that the sealing bar provides a leak-free seal along a portion of the die orifice.

Abstract: This invention enables execution of the continuous extrusion-molding of a windshield molding provided with a rainwater drainage groove with sufficient rainwater retaining function simply and satisfactorily. The windshield molding includes a decorative section of an upper molding section of the entire windshield 2 to be installed throughout the upper section and both of the side sections of the windshield glass extended externally and provided with a rainwater retaining groove in the extended thick body portion. All of the molding sections including the upper molding section the side molding sections etc. are continuously extrusion-molded.

Abstract: The accumulator of an extrusion blow molding machine is constructed so that the programming cylinder and die adjustment rod have axially aligned bores to receive a die pin retaining rod. The retaining rod holds the die pin in place by means of a lower split ring that nests inside the die pin and a lock nut combined with an upper split ring associated with the programming cylinder. When the lock nut is loosened and the upper split ring is removed, the retaining rod is moved down (while the die pin is held in place) and the lower split ring is removed. The die pin is then free to slide off the retaining rod and be removed from the accumulator head.

Abstract: The invention relates to an adjustable throttle with which to influence the mass flow within a rectangular flow channel or a flat flow channel with rounded marginal areas. Because of its special design, the throttle has no parting plane perpendicular to the fluid flow direction. The channel height may be modified by this throttle, so that the fluid mass flow may be influenced by changing the local flow channel resistance as a function of its width without creating discontinuities in the flow channel. Because of this continuous change in the geometry of the flow channel, both in the direction of its width and in the flow direction, the whole flow channel is totally free from dead spots.

Abstract: A rod 3 is driven forward to open an annular slit 5 between a die 2 and a mandrel 4 and the molten resin in a resin accumulation chamber 10 is expelled from annular slit 5 to form a parison. In this operation, the die 2 is displaced from an original position adjoining to the mandrel 4 (axially aligned position) upon opening of the annular slit 5 to correct for any variation in thickness of parison P to be extruded from the annular slit 5. Then, the molten resin accumulated in accumulation chamber 10 is expelled from annular slit 5 to form parison P. The die 2 is then reset to the original position to bring the die 2 and mandrel 4 into axial alignment. Therefore, as the rod 3 is driven back, the annular slit 5 can be closed tight by the mandrel 4 to prevent resin leakage. After closure of the annular slit 5, molten resin is accumulated again in the accumulation chamber 10 and the annular slit 5 is opened. This procedure is repeated to produce parisons on an intermittent basis.

Abstract: In a duplex type coating apparatus, a left-right pair of dies and are disposed on opposite sides of a carrying path of a web, the dies and are each made up of an upper member and a lower member, a tip part of the lower member projects further toward the carrying path than a tip part of the upper member, and coating liquid discharge passages are inclined in the direction of the carrying path of the web. As a result, because the same amount of coating liquid is discharged from each of the dies and coated onto each side of the web, it is possible to carry out coating at the same coating thickness and in the same position on both sides of the web.

Abstract: A parison extrusion head includes a cylindrical body, a programing rod in the body, a die pin on the end of the rod, and a die ring mounted on the end of the body by a clamp assembly having a pair of clamp arms which are connected to the body by hinges and are rotated between a closed position holding the die ring on the body an open position permitting free removal of the die ring. The clamp arms carry bolts used to move the die ring laterally and adjust the thickness of the extruded parison.

Abstract: A modular tubular cellulosic casing die that includes interchangeable parts, and adjustable die openings having an inner lip that can be centered and vertically adjusted relative to the die's outer lip.

Abstract: In a method of manufacturing moldings and an apparatus therefore, a ridge piece 20 protrudes from a molding main body 10 of a molding 1 in a lip manner is removed gradually from a leading end side to a root side by a lip removing piece 33 moving together with a second die 32 which changes the extrusion contour of the molding main body 10, then the ridge piece 20 is removed by the movement of the second die 32 without decreasing the thickness of the ridge piece 20 thinning. Accordingly, the ridge piece 20 can be removed effectively by the simple operation and apparatus without requiring the operation such as the after-treatment, which can result in the improvements of the productivity of the molding 1, the appearance of the molding 1, and the reliability.

Abstract: An extrusion die for foam sheet including a die body defining a manifold for conducting a split stream of heated and pressurized foamable thermoplastic melt through separate distribution channels to a die terminus. A pair of mating die lips are arranged on opposed sides of the melt and are constructed to adjustably slide toward and away from each other to vary the flow of a melt. The lips are each mounted to slide along an axis which is tilted rearwardly at an acute angle relative to an orthogonal to the sheet being formed. The mandrel is configured and adapted for quick withdrawal and replacement from an end of the die through a passageway extending through the die transverse to the direction of extrusion of a sheet.

Abstract: An apparatus and method for controlling mass flow in an extrusion die provides cross-directional measurements of at least one property of an extrusion produced by the extrusion die, such measurements being made at a plurality of cross-directional locations that successively span the extrusion. The measurements are assembled to provide cross-directional profiles of the extrusion. A spatial-frequency splitter operates upon the cross directional profiles to separate selected spatial frequency component profiles from each cross-directional profile. A reference profile is provided for representing desired spatial frequency profiles. An error signal generator generates error signals representing the difference between the spatial frequency component profiles and the desired spatial frequency profiles and actuators control mass flow components of the extrusion die in response to the error signals.

Abstract: An extruder die apparatus, system and method for the extrusion of a thermoplastic material, which die apparatus has an adjustable choke ring. The apparatus comprises an extruder housing having an axial bore for the extrusion of thermoplastic material therethrough from the inlet to the outlet of the bore, an inner die lip and an outer die lip about the bore and within the housing, the lips forming a concentric die gap passageway for the extrusion of a thermoplastic material from the one to the other end of the die, and a choke gap within said thermoplastic material flow passageway having a movably positioned choke ring. The choke ring has a plurality of individual, axially extending castellations thereon, some having oval receiving holes therein.

Abstract: An extrusion molding machine for manufacturing a panel unit including a panel and a frame mounted on a peripheral edge of the panel. The extrusion molding machine includes molding die for forming the frame on the peripheral edge of the panel by extrusion molding. The molding die are adapted to follow the fluctuation of the peripheral edge of the panel caused by variation of curvature of the panel.

Abstract: Apparatus and methods are provided for producing a long fiber-reinforced thermoplastic resin compositions by initially loosening a continuous fiber bundle by a fiber loosening device so as to form a moving web-like continuous fiber bundle. At least one side of the moving web-like continuous fiber bundle which passes through the die is coated with a thermoplastic resin melt extruded through a slit disposed in the die by an extruder. The slit has substantially the same width as that of the web-like continuous fiber bundle to provide an even supply of the resin melt in the width direction of the web-like continuous fiber bundle. However, the slit has a spacing which changes at a point in the widthwise direction of the web-like continuous fiber bundle so as to be increased as the point is more remote from a feed port and have a constant spacing in the flowing direction of the thermoplastic resin melt.

Abstract: An apparatus for applying a liquid medium has an application slot whose width of opening is defined by the mutual spacing of its longitudinal edges, and means for feeding liquid medium to the application slot. The width of opening of the application slot is adjustable between a maximum width and a closed position permitting the medium to be precisely cut off when the application operation is concluded by closing the slot.

Abstract: A sealing device for assuring a sealed junction between two ducts (3 and 11, 13) for conveying plastic material at a high temperature and under high pressure in a machine for transforming plastic material, includes a first part (2) defining the first duct (3) and a second part (9) defining the second duct (11, 13), the second part being inserted in the first duct. The second part (9) comprises at one end an annular lip (16) protruding from its external cylindrical surface and connected to the one end by a thin annular zone (17). The lip (16) has a cylindrical external surface (18) which abuts the internal surface of the first part (2) under a mechanical bias due to the dimensional tolerances of the external surface (18) of the lip (16) and the internal surface of the first cylindrical part (2).

Abstract: An apparatus for extruding a weather strip having first and second function portions and a connecting portion interconnecting these function portions is disclosed. The connecting portion varies in width according to a longitudinal position along the weather strip. Included in the apparatus is a head, a main die plate which is mated with a front side of the head and which has a first opening for extruding rubber therethrough to form a first function portion, such as a mounting portion, and part of the connecting portion, a fixed die plate connected to the main die plate, and a movable die disposed in the fixed die plate. The movable die has a second opening for extruding rubber therethrough to form a second function portion, such as a sealing portion, and part of the connecting portion and is slidably received in a reception portion in the fixed die plate. A discharge rate of the rubber for forming the connecting portion is adjustable in accordance with the sliding movement of the movable die.

Abstract: An extrusion apparatus having an internal deckle system, includes a deckle blade that extends through an end of the apparatus into a flow passageway. The apparatus may beneficially include a cold-formable, sealing member for preventing leakage through the apparatus end. In a variation, the apparatus may include an upstream deckle plug that includes a sealing member formable under heat and compression to prevent leakage transversely past the upper deckle plug. In a further variation, a full width, upper deckle plug may extend through an end of the main body into the manifold. A wavy or scalloped edge may be avoided by an extended portion that extends downwardly and terminates at or near the exit orifice.

Abstract: An extrusion apparatus includes first and second die body portions each having a main body and a lip interconnected with the main body wherein the die body portions are joined such that a single die outlet is formed between and bounded by the lips. The apparatus also includes suitable structure for moving the lips to adjust the die outlet.

Abstract: A method of manufacturing a windshield molding by the extrusion process. The molding includes a pair of extruded side molding parts and an extruded upper molding part integral with and extending between the side molding parts. The side molding parts have large thickness portions where water drain channels are formed. The water drain channels have sufficient capacity to guide fluid such as rain water from the outer surface of the windshield.

Abstract: An accumulator head for a blow molding machine uses an electromechanical drive assembly for the purging and programming functions. The purging actuator of the drive assembly includes a ball screw and nut assembly in which the ball screw is rotated by an electric motor to move the ball nut assembly vertically and operate the plunger of the accumulator. A second ball screw and nut assembly is included in the programming actuator of the drive assembly for moving the mandrel vertically, thereby controlling the size of the die outlet opening of the accumulator. Preferably, the ball screws of the programming and purging actuators are axially aligned with the nut assemblies each carried by a yoke that travels on guide rods. Four support rods are provided to maintain alignment and provide stationary mounting for the respective motors. The structure has sufficient rigidity to supply the force required for the purging operation, but uses no hydraulic actuators.