| Patent Number |
Title Of Patent |
Date Issued |
| 5223345 |
Extruder housing for a double-worm extruder and method of making same |
June 29, 1993 |
| An extruder-housing part for a double-worm extruder for the plastification of thermoplastic synthetic resin and plastic mixtures has two chambers for receiving the worms and forming a figure eight cavity. A wear-resistant material formed as a hard-phase layer is provided to line the cham |
| 5217721 |
Apparatus for producing a synthetic resin foil |
June 8, 1993 |
| A foil-blowing head has a nozzle lip which is substantially cylindrical and of an axial length of at least several centimeters and a radial thickness of at least several millimeters. High-force servoeffectors which can be provided with stepping servomotors, speed-reduction transmissions |
| 5208048 |
Extrusion head for tubular strands of thermoplastified synthetic resin material |
May 4, 1993 |
| A flow-rearrangement device between the annular extrusion gap of an extrusion head and the feed for the thermoplastified synthetic resin has two disks with registering grooves forming rearrangement ducts communicating axial inlet bores with axial outlet bores to effect a flow rearran |
| 5183606 |
Method of making a plastic foil and for winding the plastic foil into a coil or roll |
February 2, 1993 |
| Blown or flat-extruded plastic film having systematic plus or minus errors in thickness along the width of the film have a thickness profile measured and the measured profile is fed to a computer which controls the extruded film or tube from which the film is blown so that the foil thick |
| 5178806 |
Process for producing a plastic foil of thermoplastic material |
January 12, 1993 |
| A process for the production of a plastic foil of thermoplastic material as well as for winding this plastic foil into a coil. The produced plastic foil has systematic thickness errors with plus thickness errors and minus thickness errors. The coil is practically free of thickness errors |
| 5116135 |
Extruder housing for a double-worm extruder and method of making same |
May 26, 1992 |
| An extruder-housing part for a double-worm extruder for the plastification of thermoplastic synthetic resin and plastic mixtures has two chambers for receiving the worms and forming a figure eight cavity. A wear-resistant material formed as a hard-phase layer is provided to line the cham |
| 5110518 |
Foil-blowing apparatus and method |
May 5, 1992 |
| A foil-blowing apparatus has at least one deformable lip defining the annular orifice from which the thermoplastic tube which is blown to form the coil is extruded. The lip can be provided with an array of effectors which, in response to a thickness-profile measuring unit, can radially |
| 5098636 |
Method of producing plastic fibers or filaments, preferably in conjunction with the formation of |
March 24, 1992 |
| In place of discrete orifice spinnerets, a nozzle unit for thermoplastified thermoplastic material in the production of nonwoven fabric has a wide-slit nozzle at least one lip of which is formed with sawtooth serrations so that a film emerges from the nozzle and is broken up by an ai |
| 5094790 |
Method of an apparatus for producing a web of platelike thermoplastic |
March 10, 1992 |
| Platelike webs of thermoplastic material are produced by extruding a strip of the thermoplastic material and passing it through a roll unit having a pair of intake rolls upstream of which a bank of the material is formed. The delivery speed is controlled in response to the bearing pressu |
| 5032329 |
Method of making a fleece from spun filaments |
July 16, 1991 |
| An apparatus for making a fleece comprises a horizontally elongated upright passage, flaps defining a stretching gap between the walls, and respective lower flaps have upper edges pivotal by actuators on the walls. A foraminous conveyor belt extends horizontally immediately underneath th |
| 5030082 |
Extrusion die for thermoplastic resin |
July 9, 1991 |
| An extrusion die for a plastified thermoplastic resin has an outer part, an inner part inside the outer part and defining with it an annular passage, and webs supporting the inner part on the outer part and defining branch passages connecting an inlet passage formed by the parts to the a |
| 5028375 |
Process for making a spun-filament fleece |
July 2, 1991 |
| The process for making a spun-filament fleece from at least two stretched thermoplastic monofilaments made of a thermoplastic material includes feeding thermoplastic material to at least two spinnerets each including a separate group or plurality of spinning nozzles arranged in rows over |
| 5017323 |
Method and apparatus for stretching thermoplastic films |
May 21, 1991 |
| A method of and apparatus for continuously stretching a thermoplastic web comprises the steps of feeding the thermoplastic web longitudinally to a heating chamber at a relatively low input speed, engaging the thermoplastic web in the heating chamber with a first member with a relativ |
| 4955802 |
Blow-extruding a multilayer synthetic-resin tube |
September 11, 1990 |
| An apparatus for blow extruding a synthetic-resin tube has a nozzle having an annular mouth generally centered on a longitudinal axis for longitudinally outwardly extruding a tubular synthetic-resin strand, an inner stabilizing tube extending longitudinally outward from the nozzle wi |
| 4913556 |
Mixing apparatus for thermoplastic synthetic resin |
April 3, 1990 |
| A rotor and stator mixing system has mixing-chamber recesses in the outer periphery of the rotor and inner periphery of the stator which are generally similar, arrayed in peripheral and axial rows and are mutually axially offset. The guide radius R of the semicircular ends of each el |
| 4911868 |
Process and apparatus for making a thermoplastic foil |
March 27, 1990 |
| The process for making a thermoplastic foil involves the use of a wide-outlet or long-slit die which has at least one outlet-gap-defining adjustable die lip, an opposing gap-bounding lip and a group of piezotranslators distributed over the length of the outlet-gap-defining adjustable |
| 4908165 |
Apparatus for cooling a melt strip of thermoplastic synthetic resin and process |
March 13, 1990 |
| An apparatus and method for cooling a melt strip from a wide-slot die includes a cooling roller driven at a predetermined angular velocity and juxtaposed with a corona-discharge electrode in the form of a rotation symmetrical rigid bar which is rotated about its axis at an angular ve |
| 4906102 |
Apparatus for mixing thermoplastified synthetic resins |
March 6, 1990 |
| An extruder feeds a thermoplastified flow of synthetic resin to at least one mixing unit which is driven independently of the extruder and has a rotor and stator with mutually facing pockets and defining a gap between them traversed by the thermoplastified flow and into which an additive |
| 4900155 |
Method of metering an additive into and mixing it with a thermoplastified synthetic resin |
February 13, 1990 |
| A method of mixing a pumpable additive with a thermoplastified flow utilizes a pocketed rotor and stator structure integrated in a worm or screw plastifier and to which the additive is fed by a metering pump at the upstream end of the gap between the rotor and stator surfaces. |
| 4892264 |
Lowering mechanism for the foil in a device for winding-up a foil web, particularly a synthetic- |
January 9, 1990 |
| Lowering mechanism is disclosed for the foil roll in a device for the winding of a foil web, particularly a synthetic-material foil web. A roll core with the finished foil roll can be received at its ends by lowering arms. It can be deposited on a discharge level by means of a lowering-a |
| 4886219 |
Winding up a foil web, particularly a foil web of synthetic material |
December 12, 1989 |
| A device for winding up a foil web, particularly a foil web of synthetic material, into a foil roll on a roll core, has two swivel arms having roll-core receiving portions at their ends, a contact roller, and an actuating cylinder-piston arrangement for the swivel arms and the roll c |
| 4877571 |
Process for deep drawing composite thermoplastic foil with a PVDC layer |
October 31, 1989 |
| A cuppable composite thermoplastic foil with a PVDC layer is subjected to a cupping process at a definite temperature and the container is formed by the cupping process, especially a vacuum cupping process. To provide a stronger and more stable container for food packaging the composite |
| 4874571 |
Apparatus for calendering plastic web extruded from a slot die |
October 17, 1989 |
| The invention relates to an apparatus for calendering a plastic web extruded from a slot die, and a method of operating this apparatus, the apparatus having at least two cooled rolls, which work in conjunction, the plastic web passing through the calendering nip between them. The plastic |
| 4858139 |
Process and extrusion apparatus for extruding a plastic web |
August 15, 1989 |
| A plastic web is made by an extrusion apparatus having a plastics screw press, a metering pump with a volume flow depending on the rotation speed, an output die and a rolling unit with calendaring rolls. The flow of a thermoplastic material is regulated with the metering pump. The melt w |
| 4851179 |
Method of operating a fleece-making apparatus |
July 25, 1989 |
| The fleece-making apparatus includes a spinning nozzle system, a cooling shaft, a stretching aperture, a diffuser shaft, a fleece delivery conveyor and a device for feeding process air and for drawing outflowing air through the fleece delivery conveyor. The process air is divided into tw |
| 4838774 |
Apparatus for making a spun-filament fleece |
June 13, 1989 |
| The apparatus for making a spun-filament fleece from a stretched thermoplastic monofilament has a combined spinning unit made up of separate spinning units each having a plurality of spinning nozzles arranged in rows over a rectangular cross section, a blower shaft, a stretching shaf |
| 4820459 |
Process for making spun-filament fleece from endless synthetic resin filament |
April 11, 1989 |
| The process for making the spun fleece proceeds in a filament-spinning unit having a spinning nozzle system, a cooling shaft, a stretching aperture, a diffuser shaft, a continuously moving fleece recovery conveyor and a device for feeding process air and for drawing outflowing air throug |
| 4820142 |
Apparatus for making a spun-filament fleece |
April 11, 1989 |
| The fleece spinning unit has a spinning nozzle system, a cooling shaft, a stretching aperture, a diffuser shaft, a continuously moving fleece receiving conveyor and a device for feeding process air and for drawing outflowing air through the fleece receiving conveyor. The cooling shaft |
| 4815957 |
Apparatus for calibrating a tubular foil balloon |
March 28, 1989 |
| The apparatus for calibrating a tubular foil bag comprises at least two iris aperture calibrating devices and at least one segment calibrating device. The iris aperture calibrating devices are spaced from each other and each have a plurality of iris aperture leaves, e.g. sickle shape |
| 4813864 |
Apparatus for making a spun-filament fleece |
March 21, 1989 |
| The apparatus has a spinneret, a cooling shaft, a stretching aperture, a diffuser shaft, a fleece receiving conveyor and a device for feeding process air and for pulling or drawing outflowing air through the fleece receiving conveyor. The cooling shaft has a shaft wall provided with a |
| 4812112 |
Apparatus for making a spun fleece from endless synthetic-resin filament |
March 14, 1989 |
| A device for making a spun fleece has a spinning nozzle or spinneret system, a cooling shaft, a stretching gap, a diffuser shaft, a continuously moving fleece receiving conveyor and a device for feeding process air and for pulling or removing outflowing air through the fleece receivi |
| 4798351 |
Apparatus for coiling a foil web, especially a synthetic resin foil web |
January 17, 1989 |
| The apparatus for winding a foil sheet, especially a plastic foil sheet, on a roll core is used in a step in the winding of a foil sheet into a foil sheet roll with a foil sheet winding machine. The apparatus comprises a contacting roll, a roll core receptacle and a cross cutter. A roll |
| 4797083 |
Extrusion die for making a foamed thermoplastic web |
January 10, 1989 |
| The extrusion press comprises a block and a displacing body mounted in the block. The block includes an inlet duct, two feed ducts connected to it, transversely widened spaces connected to them and an outlet duct. The displacing body comprises a mounting portion and a guide portion and i |
| 4797079 |
Apparatus for making a thermoplastic monofilament of exact thickness |
January 10, 1989 |
| The process for making at least one thermoplastic monofilament of an exact diameter from a thermoplastic material by spinning in an apparatus in which a thermoplastic material is fed to at least one spinneret, which has at least one spinning plate with a plurality of spinning holes for t |
| 4784595 |
Apparatus for extrusion of a thermoplastic material |
November 15, 1988 |
| The apparatus for extrusion of a thermoplastic material comprises an extruder with an extruder screw and an extruder housing with a feed opening, a feed device, a drive with a variable speed motor and a regulating device cascade for the mass temperature. The regulating device cascade |
| 4784590 |
Foil-blowing apparatus with improved cooling |
November 15, 1988 |
| The apparatus for making a plastic foil by blowing into an extruded thermoplastic tube comprises a rotating extruder head with at least one circular outlet gap for the plastic tube, an air blowing device and a cooling device including two circular cooling air outlets surrounding the |
| 4756858 |
Extruding a thermoplastic laminate with recycled trimmings |
July 12, 1988 |
| An apparatus for extruding a thermoplastic laminate has a nozzle assembly having a nozzle body centered generally on a plane and formed at the plane with a merge passage, with an outlet slot opening in one direction from the merge passage, with core-layer distribution and intake passages |
| 4721447 |
Shaping tool for an extruder or calibrator for thermoplastic material |
January 26, 1988 |
| The shaping device, particularly for an extruder tool or calibrator unit, for an extruder for thermoplastic material comprises at least one outlet defining an adjustably positionable unit lip, an opposing lip and at least one positioning member acting on the unit lip which is a part of a |
| 4708619 |
Apparatus for spinning monofilaments |
November 24, 1987 |
| Apparatus for spinning monofilaments made of thermoplastic synthetic resin, with a spinning head for monofilaments, at least one spinning panel with a plurality of nozzle orifices, one or more spinning pumps with a motor equipped with a regulator for controlling the thickness of the |
| 4708618 |
Extruder die for extrusion of a thermoplastic laminate |
November 24, 1987 |
| An extruder die for extrusion of a multilayer thermoplastic laminate, particularly in the form of a foil or plate, comprises a multicomponent block symmetric with respect to a central plane dividing a plurality of feed channels and distributing channels connected to said feed channels, |
| 4695236 |
Apparatus for continuous extrusion of a multilayer synthetic resin web |
September 22, 1987 |
| The apparatus for continuous extrusion of a plastic laminate has at least two extrusion screw presses, an accumulator block, a transition unit, and an output die, from which the plastic laminate product is extruded. The accumulator block has a combining channel or canal therein which is |
| 4692106 |
Apparatus for stretching the individual strands of a bundle of fibers or threads |
September 8, 1987 |
| The stretching machine comprises a spinning bar, a blowing compartment, and a stretching chamber. The spinning bar has a plurality of spinning nozzles, from which the individual fibers are put out or extruded in a thermoplastic condition. The blowing compartment is provided with blowing |
| 4659300 |
Worm extruder for synthetic resin |
April 21, 1987 |
| A synthetic resin worm press in which the thread height in an intake zone adjoining a feed opening zone is substantially smaller than the thread height in the feed opening zone, a frustoconical divergent transition piece is provided between the two zones at the core of the worm and l |
| 4615666 |
Apparatus for flattening blown-foil tubes |
October 7, 1986 |
| A blown-foil tube is flattened between a pair of frames having ladder arrays of flattening elements in respective assemblies spaced along the path of the tube. Each assembly has a wood bar element and a roller element on a pair of plates pivotally mounted on the frame so that one or |
| 4594063 |
Extruder or calibrating die |
June 10, 1986 |
| A die for a thermoplastic material with at least one output-gap-defining adjustable die lip, an opposing gap-bounding lip, at least one adjusting element working on the output-gap-defining die lip as well as a control and adjusting device for the thickness of the extruded plastic product |
| 4552317 |
Apparatus for coiling a synthetic resin foil web |
November 12, 1985 |
| The weight components along a pair of support arms for a coil of a foil web provide inputs to a controller whose other input is from an angle detector measuring the inclination of said arms so that the controller can operate a control member such as a fluid cylinder to maintain a constan |
| 4488861 |
Blowing head for making a synthetic-resin tube |
December 18, 1984 |
| An apparatus for forming a thin-wall and flattenable synthetic-resin tube has inner and outer nozzle parts generally centered on a common axis and defining an annular passage centered on the axis. At least one of the parts is formed with an annular and substantially closed chamber ju |
| 4464319 |
Method of and apparatus for the coiling of flattened synthetic resin foil tubes |
August 7, 1984 |
| A method of and apparatus for the formation of synthetic resin foil coils. The angular velocity of the flaw propagating member is reduced as the coil increases for at least a multiplicity of turns to impart to the coil the configuration of a right circular cylinder with a high degree of |
