US3909170A - Adjustable flat spinneret for the coextrusion of flat films comprising a plurality of components - Google Patents

Adjustable flat spinneret for the coextrusion of flat films comprising a plurality of components Download PDF

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Publication number
US3909170A
US3909170A US318778A US31877872A US3909170A US 3909170 A US3909170 A US 3909170A US 318778 A US318778 A US 318778A US 31877872 A US31877872 A US 31877872A US 3909170 A US3909170 A US 3909170A
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Prior art keywords
conduit
feed means
distal end
partitions
feed
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US318778A
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English (en)
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Robert Riboulet
Yves Galery
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Cellophane SA France
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Individual
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07Flat, e.g. panels
    • B29C48/08Flat, e.g. panels flexible, e.g. films
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/12Articles with an irregular circumference when viewed in cross-section, e.g. window profiles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • B29C48/19Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their edges
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • B29C48/21Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their surfaces
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/30Extrusion nozzles or dies
    • B29C48/305Extrusion nozzles or dies having a wide opening, e.g. for forming sheets
    • B29C48/307Extrusion nozzles or dies having a wide opening, e.g. for forming sheets specially adapted for bringing together components, e.g. melts within the die
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/36Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/49Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using two or more extruders to feed one die or nozzle
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/17Articles comprising two or more components, e.g. co-extruded layers the components having different colours

Definitions

  • ABSTRACT Apparatus for adjusting the flow of at least two extrudable fluids to a coextrusion nozzle comprising a generally cylindrical conduit having a discharge end and a distal end, feed means for each fluid communicating with the interior of this conduit, and at least one substantially planar partition rotatably mounted in this conduit in the distal end thereof, the plane of these partitions being parallel with the axis of the conduit and the edges of the partition each terminating near the inside wall of the conduit.
  • a process for producing composite films which may later be either monoaxially or biaxially drawn by coextruding a plastic film having a central area with two borderstrips having different compositions attached to each side of the running length of the central area.
  • the films comprise a central area having at least two layers and a borderstrip having a composition different from the central area and attached to each running edge of the central area.
  • this invention relates to an apparatus for use with a coextrusion nozzle which adjusts the orientation of the extrudable fluids so that the same may be so extruded into any desired configuration including a laminated relationship and a side-by-side relationship or combination thereof.
  • the selvage material which is to be cut off and re-utilized is one of the two components of the laminated thermoplastic film. Since the constant re-working of these selvage materials tends to degrade the same, this lowers the quality of the laminated extruded product since the selvage material which is cut off and recycled even if the same does not contain any additional mixed polymer, tends to be of a lower overall quality than the polymer initially extruded. g g g In addition to US. Pat. No. 3,476,627, the apparatus as disclosed in US. Pat. No. 3,528,130 is useful for making laminated flat extruded films.
  • this apparatus comprises means to mix three separate polymer streams so that upon extrusion from a sheeting or film die, the product will have a uniform thickness and cross-section.
  • the apparatus of the present invention comprises apparatus for adjusting the flow of at least two fluids to a coextrusion nozzle comprising a generally cylindrical conduit having a discharge end and a distal end, feed means for each fluid communicating with the interior of this conduit, and at least one substantially planar partition rotatably mounted in this conduit in the distal end thereof, the plane of each partition being parallel with the axis of the conduit and the edges of each partition terminating near the inside wall of the conduit.
  • the process of the present invention comprises a process for producing a multi-component film which may be later monoaxially or biaxially drawn with a minimum of waste by extruding a plastic film having a central area having two borderstrips with different compositions attached to each side of the running length of the central area, and later drawing or orienting the film and removing the edge portions from the finally drawn product.
  • the product of the present invention comprises a flat composite thermoplastic film having a central area with at least two layers and two borderstrips attached one on each side of the running length of the central area, the borderstrips having a different composition than the central area.
  • FIG. I is a diagrammatic side view of the apparatus of the present invention mounted for use in conjunction with an end feed, flat spinneret;
  • FIG. 2 is a view taken along line 2-2 in FIG. ll;
  • FIG. 3 is a view taken along line 33 in FIG. 1;
  • FIG. 4 is a diagrammatic side view of a further embodiment of the apparatus of the present invention.
  • FIG. 5 is a view along line 55 in FIG. 4;
  • FIG. 6 is a diagrammatic side view of a still further embodiment of the apparatus of the present invention.
  • FIG. 7 is a view taken along line 77 in FIG. 6;
  • FIG. 8 is a diagrammatic side view twisted 90 on the line XX for clarity of a still further embodiment of the apparatus of the present invention.
  • FIG. 9 is a view taken along line 9-9 in FIG. 8;
  • FIG. 10 is a view along line l0l0 in FIG. 8;
  • FIG. 11 is a view along line 1111 in FIG. 8;
  • FIG. 12 is a cross-sectional representation of a bicomponent thermoplastic film produced utilizing the apparatus of the present invention.
  • FIGS. 13 and 14 are cross-sectional views similar to FIG. 12 wherein the apparatus of the present invention has not been properly adjusted;
  • FIG. 15 is a cross-sectional view of the threecomponent film produced utilizing the apparatus of the present invention.
  • FIGS. 16 through 19 are cross-sectional views of films produced in accordance with the present invention.
  • FIGS. 1, 2 and 3 the apparatus of the present invention is shown in combination with an end feed flat spinneret 1 having a thin flat nozzle 2 for the extrusion of a flat laminated film.
  • the control apparatus of the present invention is mounted at the end of generally cylindrical conduit 3 by any conventional connecting means 4.
  • the flow control apparatus of the present invention comprises a thin blade 5 which is mounted within the cylindrical conduit 6. Blade 5 is attached at its upper end to adjusting means 7 rotatably mounted in groove 8. The seal between adjusting means 7 and groove 8 is such that adjusting means 7 can be positioned as necessary yet prevents any leakage of polymer melt between groove 8 and adjusting means 7.
  • product feed conduits 9 and 10 are each individually connected to conventional flow controlling means for regulating the flow of each polymer melt relative to the other.
  • FIG. 2 shows the measurement of angle theta and diagrammatically shows the configuration of the thermoplastic melt passing through conduit 3 immediately before entering extrusion nozzle 2.
  • FIG. 3 shows the positioning of blade 5 within conduit 6 between feed conduits 9 and 10. Furthermore, dotted lines 5' and 5 show the approximate maximum angle to which blade 5 can be adjusted. Furthermore, as shown, blade 5 extends substantially across conduit 6 with the clearance at each end being approximately 0.01 to 0.5 millimeters. This clearance is not critical as such, except that the clearance must be sufficiently close so as to prevent the melts from flowing around the edges of blade 5 and causing local areas of turbulence and non-laminar flow and yet the blade 5 must be sufficiently spaced from the wall so as to prevent any possible friction which might foul the equipment.
  • blade 5 down conduit 6 and its extension into conduit 3 is not particularly critical except that the length should be sufficient so as to insure sufficiently laminar flow of the two polymer melts as they combine at the end of blade 5.
  • Blade 5 may be constructed from any sufficiently rigid material which is sufficiently smooth so as not to disrupt the laminar flow of the polymer melts flowing through conduits 6 and 3.
  • FIG. 4 which shows a second embodiment of the apparatus of the present invention wherein three separate polymers may be fed to the extrusion nozzle
  • the flow adjusting apparatus of the present invention is mounted on an extrusion nozzle feed conduit 3, such conduit being substantially similar to that as shown in FIG. 1.
  • Feed conduit 3 may be any type of coextrusion nozzle wherein laminar flow is utilized to transport the various polymeric materials to their respective portions of the extrusion nozzle.
  • the flow controlling apparatus is mounted on conduit 3 by any suitable connecting means 20 such as a threaded ring which joins feed conduit 3 with upper conduit 21. Both conduits of course should have the same internal diameter so as not to disrupt the laminar flow.
  • Rotatable adjusting member 24 is attached to conduit 21 by any conventional rotatable mounting means such as extension 26 of conduit 21 which fits within groove 25 of member 24 to form a sufficient seal.
  • Conduit 27 is attached to the upper end of member 24. Conduit 27 has an internal diameter equal to the separation between parallel blades 22 and 23 and terminates at the upper end of blades 22 and 23. Further the axis of conduit 27 as it communicates with conduit 21 is the same as the axis of conduit 21.
  • the embodiment as shown in FIG. 4 includes non-movable lateral side conduits 28 and 29 which are substantially perpendicular to the axis of conduit 21.
  • FIG. 5 which shows a view alcn g line 55 the position of blades 22 and 23 can be seen with relation to conduits 27, 28 and 29. Again these blades extend substantially across conduit 21 so that there is a minimum of clearance at the edge so that laminar flow is maintained throughout the apparatus.
  • the maximum adjustment of blades 22 and 23 is as shown by blades 22' and 23', i.e., when the blades are adjacent the openings in conduit 21 for conduits 28 and 29.
  • conduit 31 is mounted to inlet conduit 32 of an extrusion nozzle by means of connecting ring 33.
  • rotatable member 34 which is mounted on the upper end of conduit 31 by means of groove 35 in member 34 and collar 36 in conduit 31 includes two separate feed conduits 37 and 38 which are connected to separate feed means so as to introduce two separate polymer melts into conduit 31.
  • the lower endsof conduits 37 and 38 are connected to flat surfaces 39, 40 and 41 which are constructed in a manner similar to the dividing surfaces or blades as disclosed in FIGS. 1 and 4. As shown in FIG.
  • Conduit 31 also includes two additional feed inlets 42 and 43 which are connected to feed means to introduce at least one additional polymer melt into conduit 31.
  • the feed of the polymer melts is regulated so that the same are maintained in laminar flow with the relative velocity of each of the polymers being easily controlled in combination with the angle of rotation of member 34 with respect to the axis of the extrusion nozzle.
  • FIG. 8 shows a still further embodiment of the apparatus of the present invention, the apparatus having been turned 90 along line XX.
  • the apparatus as shown in FIG. 8 comprises the apparatus as shown in FIG. 4 including a generally cylindrical conduit 50 two feed means 51 and 52 mounted in conduit 50 and a rotatable member 53 mounted at one end of conduit 50, rotatable member 53 including a feed con duit 54 which terminates in two rigid members 55 and 56 mounted within conduit 50.
  • Conduit 50 is attached by means of a ring attaching means 57 or any other suitable means to a rotatable member 58 which includes a flange 59 mounted in a U-shaped groove 60 at the top end of cylindrical conduit 61.
  • conduit 61 is roughly equivalent to the internal diameter of conduit 50 which in turn is roughly equivalent or equal to the diameter of inlet conduit 62 of an extrusion nozzle.
  • Conduit 61 is mounted on conduit 62 by means of a ring connection means 63 or any other similar means.
  • Conduit 61 also includes two feed conduits 64 and 65 mounted in the sides of conduit 61 normal to the flow of melt through conduit 61.
  • the internal diameter of member 58 is also roughly equivalent to the internal diameter of conduit 50. However, at a point below flange 59 two of the members of the generally cylindrical conduit 58 are flattened in an area 66 of decreasing diameter which terminates in two rigid flanges 67 and 68 which extend entirely across conduit 61 in a manner similar to members 55 and 56.
  • FIG. 9 which is a cross-sectional view taken along line 9-9 shows the orientation of members 55 and 56 in upper conduit 50 in relation to inlet conduits 51 and 52.
  • FIG. shows the relationship of flat members 67 and 68 in relation to lower inlet conduits 64 and 65 in lower conduit 61.
  • FIG. 11 is a cross-sectional view showing a cross-section of the polymer melt as it is moving in laminar flow through conduit 62 before introduction into an extrusion nozzle.
  • the process of the present invention which may advantageously use the apparatus of the present invention comprises coextruding a composite plastic film having a central area and a borderstrip along each running edge of the central area, so that the composite film may be monoaxially or biaxially oriented and the borderstrips subsequently removed.
  • the process of the present invention produces orientated plastic films with a minimum of waste of valuable film forming material. It is especially useful for orienting laminated or multi-component films since the edge or selvage portions of these films often cannot be recycled since they may contain a number of different and incompatible additives and continued recycling degrades the product.
  • the selvage may be removed and discarded or recycled without product degradation.
  • the films of the present invention are those multilayer films which have a selvage formed from an inexpensive film forming polymer and comprise a central area having at least 2 layers each layer having a different composition and a border-strip attached to the central area along the running length of the central area, the borderstrip having a composition different from each of the layers in the central area.
  • the preferred embodiment of the product of the present invention is where the width of the central area is large with respect to the border-strips.
  • the borderstrips and the central areas are joined through coextrusion and the intersection may either be perpendicular with respect to the surface of the films or at an angle of from 30 to with respect to the surface of the films. Since the composite film is to be oriented it is preferred that the intersection be an angle between 30 and 60 since the tendency of rupture clue to different stretchability is minimized.
  • any conventional film-forming compound may be used, such as polyesters, e.g., polyethylene terephthalate, polyolefins, e.g., polyethylene, polypropylene, polyvinyl chloride, polyvinylidene chloride, polyamides, polyvinyl butyl, etc.
  • films within the present invention may include central areas having the same filmforming polymer, only having different modifiers in each layer.
  • borderstrip polymers which are film-forming but are lower in cost, are used. Often these selvage polymers are lower molecular weight polymers which do not have desirable film-forming properties such as strength, etc. Accordingly, any waste or offspecification polymer which often will be discarded can be economically utilized as the borderstrips of the product of the present invention.
  • FIGS. 15 to 19 show cross-sectional views of plastic films produced utilizing the apparatus of the present invention and the process of the present invention with FIGS. 16 through 19 illustrating the composite films of the present invention.
  • FIG. 4 may be produced by utilizing the apparatus as shown in FIG. 4 using three different polymers, one each in conduits 27, 28 and 29 and adjusting the angle of rotation of member 24 such that a laminated coextruded film having three equal layers 90, 91 and 92 each having a different composition is produced.
  • FIG. 16 is a cross-sectional view of a thermoplastic film produced in accordance with the present invention.
  • This film includes two selvage portions 100 and 101 joined to an intermediate product section 102.
  • intermediate section 102 is shown as two superimposed layers 103 and 104, it may comprise either a single layer or a series of laminated or superimposed layers up to the limits of the equipment.
  • the line of intersection between areas 100 and 102 and areas 101 and 102 is at an angle, such angle being particularly important when biaxially and monoaxially oriented films are produced since the selvage areas 100 and 101 are usually produced from polymers having a lower degree of stretchability. It has been found that when utilizing polymers with different degrees of stretchability, an angle of intersection between the various areas of from 30 to 60 produces the best results with little, if any, separation between the central product area and the borderstrips.
  • FIG. 17 shows a second embodiment of the novel thermoplastic films of the present invention comprising a selvage area 105 and 106, these selvage areas being joined to the central area 107, having two superimposed layers 108 and 109, by lines of intersection perpendicular to the surface.
  • the selvage areas 105 and 106 are removed and either recycled or eliminated since the same are produced from low cost polymers.
  • FIG. 18 shows a third embodiment of the films of the present invention wherein selvage areas 110 and 111 are extended on each running edge of central area 112 which includes three layers 113, 114 and 115.
  • the junction between the central area and the selvage area is at an angle so as to minimize the difference in stretchability between the selvage and central areas.
  • FIG. 19 is an embodiment similar to that shown in FIG. 18 wherein selvage areas 116 and 117 intersect central area 118 with a line of intersection perpendicular to the surfaces of the film. This embodiment is to be utilized when the stretchability of the selvage polymers is similar to that of the colamination central area and when it is desired to re-utilize the selvage polymer as often as possible since upon removal a minimum of product polymer is mixed with the selvage material.
  • Apparatus for adjusting the flow of at least two extrudable fluids to a coextrusion nozzle comprising a first generally cylindrical conduit having a discharge end and a distal end, feed means for each fluid communicating with the interior of said conduit adjacent the distal end of said conduit, at least two of said feed means each comprising a feed conduit laterally extending from said cylindrical conduit, each of said feed means being spaced approximately from each other and at least one substantially planar partition rotatably mounted in said cylindrical conduit in said distal end thereof, the plane of said partition being parallel with the axis of said cylindrical conduit and the edges of said partition each terminating sufficiently close to the inside wall of said cylindrical conduit to prevent extrudable fluid from flowing around said edges wherein said discharge end of said first cylindrical conduit communicates with the inlet end of an end feed, flat extrusion nozzle.
  • Apparatus for adjusting the flow of at least two extrudable fluids to a coextrusion nozzle comprising a first generally cylindrical conduit having a discharge end and a distal end, feed means for each fluid communicating with the interior of said first conduit adjacent the distal end of said first conduit, at least two of said feed means each comprising a feed conduit laterally extending from said first conduit, each of said feed means being spaced approximately 180 from each other, two substantially planar partitions rotatably mounted in said first conduit in said distal end thereof, the plane of said partitions being parallel with the axis of said first conduit and the edges of said partitions each terminat- 1 ing sufficiently close to the inside wall of said first conduit to prevent extrudable fluid from flowing around said edges, said two parallel partitions defining a volume within said first conduit, at least one additional feed means communicating with said volume defined by said parallel partitions, the axis of each additional feed means being the same as the axis of said first conduit, saidadditional feedmeans comprising a second generally cylindrical conduit having
  • feed means communicating with said volume defined by said parallel partitions.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
US318778A 1972-01-11 1972-12-27 Adjustable flat spinneret for the coextrusion of flat films comprising a plurality of components Expired - Lifetime US3909170A (en)

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Cited By (33)

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EP0010895A1 (en) * 1978-10-23 1980-05-14 Imperial Chemical Industries Plc Method of making laminates of thermoplastic polymers by a single-channel coextrusion process and melt injector block for use therein
US4272312A (en) * 1979-11-01 1981-06-09 Champion International Corporation Process for extruding films of thermoplastic polyester film-forming materials
DE3010691A1 (de) * 1980-03-20 1981-09-24 Hoechst Ag, 6000 Frankfurt Verfahren und vorrichtung zur herstellung von mehrschichtigen flachfolien aus thermoplatischen kunststoffen mittels coextrusion
US4348346A (en) * 1980-07-23 1982-09-07 Champion International Corporation Polyester film extrusion with edge bead control
US4483812A (en) * 1983-04-15 1984-11-20 Cosden Technology, Inc. Valve plate and feedblock design for co-extrusion apparatus and co-extrusion process using same
US4533510A (en) * 1983-09-19 1985-08-06 Nissel Frank R Method and apparatus for continuously co-extruding a sheet
EP0205157A2 (en) * 1985-06-10 1986-12-17 Idemitsu Petrochemical Co. Ltd. Method of manufacturing multi-layer resin material
FR2593111A1 (fr) * 1986-01-17 1987-07-24 Ono Dispositif de repartition de matiere thermoplastique pour l'extrusion de feuilles multicouches.
US4753766A (en) * 1985-10-18 1988-06-28 S.A.M. Siamp-Cedap Process for fabricating a multicolored sheet
US4784815A (en) * 1987-06-05 1988-11-15 P.C.E. Corp. Edge-laminating apparatus and process
FR2615784A1 (fr) * 1987-05-27 1988-12-02 Siamp Cedap Reunies Procede de thermoformage differe d'une feuille de polymere cassant, feuille pour la mise en oeuvre du procede, et recipients correspondants
EP0353064A2 (en) * 1988-07-27 1990-01-31 Tomy Machinery Manufacturing Company Limited Method and apparatus for feeding a plurality of molten resin jet streams into T die
FR2653377A1 (fr) * 1989-10-19 1991-04-26 Aeroquip Corp Procede et dispositif pour former une bande allongee de decoration en materiau plastique et bande de decoration pour automobile, ainsi obtenue par extrusion.
US5120484A (en) * 1991-03-05 1992-06-09 The Cloeren Company Coextrusion nozzle and process
US5211898A (en) * 1988-07-27 1993-05-18 Tomy Machinery Manufacturing Co., Ltd. Method and apparatus for feeding a plurality of molten resin jet streams into T die
US5234649A (en) * 1992-06-15 1993-08-10 The Cloeren Company End feed extrusion
US5375990A (en) * 1992-09-10 1994-12-27 Extrusion Dies, Inc. Feed block for coextrusion apparatus
US5780067A (en) * 1996-09-10 1998-07-14 Extrusion Dies, Inc. Adjustable coextrusion feedblock
US6626206B1 (en) 2000-01-20 2003-09-30 Extrusion Dies, Inc. Feedblock for adjusting the dimensions of a set of co-extruded layers of a multi-layer sheet
EP1388292A1 (en) * 2002-08-06 2004-02-11 Dreyer's Grand Ice Cream, Inc. Apparatus for forming an extruded ice cream dessert with inclusions
EP1426164A2 (en) * 2002-12-03 2004-06-09 Fuji Photo Film Co., Ltd. Method and apparatus for forming resin film
US20060116040A1 (en) * 2003-12-30 2006-06-01 Kwang-Jung Yun Geogrid composed of fiber-reinforced polymeric strip and method for producing the same
US20120052245A1 (en) * 2009-02-27 2012-03-01 Hoium Travis B Method and apparatus for cross-web coextrusion and film therefrom
US9296124B2 (en) 2010-12-30 2016-03-29 United States Gypsum Company Slurry distributor with a wiping mechanism, system, and method for using same
US9579822B2 (en) 2010-12-30 2017-02-28 United States Gypsum Company Slurry distribution system and method
US9616591B2 (en) 2010-12-30 2017-04-11 United States Gypsum Company Slurry distributor, system and method for using same
US9909718B2 (en) 2011-10-24 2018-03-06 United States Gypsum Company Multiple-leg discharge boot for slurry distribution
US9999989B2 (en) 2010-12-30 2018-06-19 United States Gypsum Company Slurry distributor with a profiling mechanism, system, and method for using same
US10052793B2 (en) 2011-10-24 2018-08-21 United States Gypsum Company Slurry distributor, system, and method for using same
US10059033B2 (en) 2014-02-18 2018-08-28 United States Gypsum Company Cementitious slurry mixing and dispensing system with pulser assembly and method for using same
US10076853B2 (en) 2010-12-30 2018-09-18 United States Gypsum Company Slurry distributor, system, and method for using same
US10293522B2 (en) 2011-10-24 2019-05-21 United States Gypsum Company Multi-piece mold and method of making slurry distributor
US20200212466A1 (en) * 2018-12-28 2020-07-02 Palo Alto Research Center Incorporated Apparatus and method for forming a multilayer extrusion comprising component layers of an electrochemical cell

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US4272312A (en) * 1979-11-01 1981-06-09 Champion International Corporation Process for extruding films of thermoplastic polyester film-forming materials
DE3010691A1 (de) * 1980-03-20 1981-09-24 Hoechst Ag, 6000 Frankfurt Verfahren und vorrichtung zur herstellung von mehrschichtigen flachfolien aus thermoplatischen kunststoffen mittels coextrusion
US4348346A (en) * 1980-07-23 1982-09-07 Champion International Corporation Polyester film extrusion with edge bead control
US4483812A (en) * 1983-04-15 1984-11-20 Cosden Technology, Inc. Valve plate and feedblock design for co-extrusion apparatus and co-extrusion process using same
EP0201617A3 (en) * 1983-09-19 1987-12-16 Welex Incorporated Method and apparatus for continuously co-extruding a sheet
US4533510A (en) * 1983-09-19 1985-08-06 Nissel Frank R Method and apparatus for continuously co-extruding a sheet
EP0201617A2 (en) * 1983-09-19 1986-11-20 Welex Incorporated Method and apparatus for continuously co-extruding a sheet
EP0205157A3 (en) * 1985-06-10 1988-07-27 Idemitsu Petrochemical Company Limited Method of manufacturing multi-layer resin material
EP0205157A2 (en) * 1985-06-10 1986-12-17 Idemitsu Petrochemical Co. Ltd. Method of manufacturing multi-layer resin material
US4753766A (en) * 1985-10-18 1988-06-28 S.A.M. Siamp-Cedap Process for fabricating a multicolored sheet
EP0233434A1 (fr) * 1986-01-17 1987-08-26 ONO Société dite: Dispositif de répartition de matière thermoplastique pour la fabrication de feuilles multicouches
FR2593111A1 (fr) * 1986-01-17 1987-07-24 Ono Dispositif de repartition de matiere thermoplastique pour l'extrusion de feuilles multicouches.
US4772195A (en) * 1986-01-17 1988-09-20 Ono Distributing device for the manufacture of multi-layer sheets
FR2615784A1 (fr) * 1987-05-27 1988-12-02 Siamp Cedap Reunies Procede de thermoformage differe d'une feuille de polymere cassant, feuille pour la mise en oeuvre du procede, et recipients correspondants
US4784815A (en) * 1987-06-05 1988-11-15 P.C.E. Corp. Edge-laminating apparatus and process
EP0294213A2 (en) * 1987-06-05 1988-12-07 P.C.E. Corporation Edge-laminating apparatus and process
EP0294213A3 (en) * 1987-06-05 1990-07-11 P.C.E. Corporation Edge-laminating apparatus and process
EP0353064A2 (en) * 1988-07-27 1990-01-31 Tomy Machinery Manufacturing Company Limited Method and apparatus for feeding a plurality of molten resin jet streams into T die
EP0353064A3 (en) * 1988-07-27 1991-04-03 Tomy Machinery Manufacturing Company Limited Method and apparatus for feeding a plurality of molten resin jet streams into t die
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FR2653377A1 (fr) * 1989-10-19 1991-04-26 Aeroquip Corp Procede et dispositif pour former une bande allongee de decoration en materiau plastique et bande de decoration pour automobile, ainsi obtenue par extrusion.
BE1003157A5 (nl) * 1989-10-19 1991-12-10 Aeroquip Corp Werkwijze en apparaat voor het vormen van een kunststofvoorwerp met een bekleding van varierende dikte, die een schaduwkleuruiterlijk heeft.
US5120484A (en) * 1991-03-05 1992-06-09 The Cloeren Company Coextrusion nozzle and process
US5234649A (en) * 1992-06-15 1993-08-10 The Cloeren Company End feed extrusion
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US6626206B1 (en) 2000-01-20 2003-09-30 Extrusion Dies, Inc. Feedblock for adjusting the dimensions of a set of co-extruded layers of a multi-layer sheet
EP1388292A1 (en) * 2002-08-06 2004-02-11 Dreyer's Grand Ice Cream, Inc. Apparatus for forming an extruded ice cream dessert with inclusions
EP1426164A2 (en) * 2002-12-03 2004-06-09 Fuji Photo Film Co., Ltd. Method and apparatus for forming resin film
US20040108621A1 (en) * 2002-12-03 2004-06-10 Fuji Photo Film Co., Ltd. Method and apparatus for forming resin film
EP1426164A3 (en) * 2002-12-03 2009-09-09 FUJIFILM Corporation Method and apparatus for forming resin film
US7674412B2 (en) 2002-12-03 2010-03-09 Fujifilm Corporation Method and apparatus for forming resin film
US20060116040A1 (en) * 2003-12-30 2006-06-01 Kwang-Jung Yun Geogrid composed of fiber-reinforced polymeric strip and method for producing the same
US7959752B2 (en) * 2003-12-30 2011-06-14 Samyang Corporation Method for producing geogrid
US20120052245A1 (en) * 2009-02-27 2012-03-01 Hoium Travis B Method and apparatus for cross-web coextrusion and film therefrom
US9579822B2 (en) 2010-12-30 2017-02-28 United States Gypsum Company Slurry distribution system and method
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US10052793B2 (en) 2011-10-24 2018-08-21 United States Gypsum Company Slurry distributor, system, and method for using same
US9909718B2 (en) 2011-10-24 2018-03-06 United States Gypsum Company Multiple-leg discharge boot for slurry distribution
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US10293522B2 (en) 2011-10-24 2019-05-21 United States Gypsum Company Multi-piece mold and method of making slurry distributor
US10059033B2 (en) 2014-02-18 2018-08-28 United States Gypsum Company Cementitious slurry mixing and dispensing system with pulser assembly and method for using same
US20200212466A1 (en) * 2018-12-28 2020-07-02 Palo Alto Research Center Incorporated Apparatus and method for forming a multilayer extrusion comprising component layers of an electrochemical cell
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FR2167229B1 ( ) 1976-07-23
FR2167229A1 ( ) 1973-08-24

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