WO1997037830B1 - A method and an apparatus for manufacturing an extruded plastic product, and a plastic product - Google Patents
A method and an apparatus for manufacturing an extruded plastic product, and a plastic productInfo
- Publication number
- WO1997037830B1 WO1997037830B1 PCT/FI1997/000180 FI9700180W WO9737830B1 WO 1997037830 B1 WO1997037830 B1 WO 1997037830B1 FI 9700180 W FI9700180 W FI 9700180W WO 9737830 B1 WO9737830 B1 WO 9737830B1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- rotor
- plastic
- grooves
- stator
- groove
- Prior art date
Links
- 239000004033 plastic Substances 0.000 title claims abstract 26
- 229920003023 plastic Polymers 0.000 title claims abstract 26
- 238000004519 manufacturing process Methods 0.000 title claims abstract 5
- 239000003000 extruded plastic Substances 0.000 title claims abstract 3
- 239000000463 material Substances 0.000 claims abstract 30
- 230000010006 flight Effects 0.000 claims abstract 5
- 230000037250 Clearance Effects 0.000 claims abstract 4
- 230000035512 clearance Effects 0.000 claims abstract 4
- 238000003825 pressing Methods 0.000 claims abstract 2
- 239000011159 matrix material Substances 0.000 claims 5
- -1 polyethylene Polymers 0.000 claims 5
- 239000004698 Polyethylene (PE) Substances 0.000 claims 4
- 238000010438 heat treatment Methods 0.000 claims 4
- 229920000573 polyethylene Polymers 0.000 claims 4
- 239000002245 particle Substances 0.000 claims 3
- 229920001470 Polyketone Polymers 0.000 claims 2
- 125000001931 aliphatic group Chemical group 0.000 claims 2
- 239000004703 cross-linked polyethylene Substances 0.000 claims 2
- 229920003020 cross-linked polyethylene Polymers 0.000 claims 2
- 239000004952 Polyamide Substances 0.000 claims 1
- 239000004743 Polypropylene Substances 0.000 claims 1
- 229910001315 Tool steel Inorganic materials 0.000 claims 1
- 238000005452 bending Methods 0.000 claims 1
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 239000011248 coating agent Substances 0.000 claims 1
- 238000001816 cooling Methods 0.000 claims 1
- 230000003247 decreasing Effects 0.000 claims 1
- 230000004907 flux Effects 0.000 claims 1
- 238000005755 formation reaction Methods 0.000 claims 1
- 239000008187 granular material Substances 0.000 claims 1
- 239000000155 melt Substances 0.000 claims 1
- 230000005012 migration Effects 0.000 claims 1
- 239000008188 pellet Substances 0.000 claims 1
- 229920002647 polyamide Polymers 0.000 claims 1
- 239000011528 polyamide (building material) Substances 0.000 claims 1
- 229920001155 polypropylene Polymers 0.000 claims 1
- 239000000843 powder Substances 0.000 claims 1
- 230000036633 rest Effects 0.000 claims 1
- 238000005245 sintering Methods 0.000 claims 1
- 239000007787 solid Substances 0.000 claims 1
- 238000000034 method Methods 0.000 abstract 1
Abstract
The invention relates to a method and an apparatus for manufacturing an extruded plastic product, the apparatus comprising at least one rotor (1) and at least one stator (2, 3) with a feed gap (4) provided between them, a groove (7) being situated on the other side of the feed gap (4), the groove pressing the material to be extruded out of the apparatus when the rotor (1) is rotated. The cross section of the groove (7) remains substantially unchanged. At the opposite side of the feed gap (4) there is positioned a countergroove (8) in such a way that a processing cavity consisting of the grooves (7), the countergrooves (8) and the clearance between them decreases at least partially continuously along the axis of the extruder. The deformation energy of the material can thus be kept as small as possible due to the unchanging cross section of the groove (7), and the material stays in the groove (7) due to the placement of the flights (7a, 8a). The material is made to move rotatably, which enables the manufacture of a laminar plastic product (11). Further, materials that would otherwise be difficult to process can also be extruded effectively.
Claims
1. A method for manufacturing extrudable products, wherein the material to be extruded is fed in a powder, pellet or granulate form, by using one or more supply means (6), into a processing cavity consisting of the volumes of the grooves (7) in the rotor (1), of the grooves (8) in the stator (2, 3) and of the clearance between them, characterized in that the cross- sectional area of said cavity decreases at least partially continuously along the axis of the extruder, and by the relative rotational movement of the stator (2, 3) and the rotor (1) said material is forced to proceed along an x-axis, whereby the frictional heat caused by the shear melts a part of the material forming a bed consisting of mainly unmelted particles and some melt around them, enabling the formation of a processing cavity that is completely filled at a certain cross-section at a distance from the end of the apparatus, and hence a rise in the pressure to a level higher than needed for pushing the material through a die later on along the x-axis.
2. A method according to claim ^ characterized in that the volume of the processing cavity is decreased along the x-axis at least until the shear zone ends typically at about the middle of the total length of the rotor (1), preferably within 1/3 to 2/3 of the screw length.
3. A method according to claim 2, characterized in that the volume of the processing cavity after the shear zone is kept constant or increased.
4. A method according to any one of the preceding claims, characterized in that the material consisting of melt and possible unmelted particles is homogenized and mixed in the section after the shear zone, but the geometry of the grooves is made such that the shear rate is lower than in the shear zone.
5. A method according to claim 4, characterized in that the pressure of the material after the shear zone is not substantially increased.
6. A method according to any one of the preceding claims, characterized in that the flow rate of the material along the groove (7) is varied by forcing the material through a ring groove (7') to enter in a new set of helical grooves.
7. A method according to any one of the preceding claims, characterized in that the material to be extruded is processed to such a small extent that the material flow comprises, at the output end of the extruder before a possible means for heating the material, partly unmelted particles that are interconnected mainly at the surface during the continuous sintering taking place in the method.
8. A method according to any one of the preceding claims, characterized by cooling a rotor (1 ) and/or a stator (2, 3) in the feed section in such a way that a heat flux arriving from the output end of the apparatus does not melt the material too early.
9. A method according to any one of the preceding claims, characterized in that the temperature of the material inside the heating means (12) is raised higher than the temperature of the material inside the extruder.
10. A method according to claim 9, characterized in that the temperature of the heating means (12) and the residence time of the material in the area of influence of the heating means (12) are adjusted such that the output material flow is for the most part homogenized.
11. A method according to any one of the preceding claims, characterized in that in the middle of the product (11) there is a mandrel (10) at the end of which there is a torsion bar (14), the mandrel (10) being centered by bending it in place by means of the torsion bar (14), which rests on the inner surface of the product (11) which has already set.
12. An apparatus for manufacturing an extruded plastic product, the apparatus comprising at least one rotor (1) and at least one stator (2, 3), and a feed gap (4) between them, grooves (7) being provided on the other side of the feed gap (4) for pressing the material to be extruded out of the apparatus when the rotor (1) is rotated, the cross-section of the groove (7) being substantially unchanging, and a countergroove (8) being provided on the other side of the feed gap (4) at least over a distance of the gap, the thread of the countergroove being opposite in direction to the groove (7) provided on the other side of the feed gap (4), characterized in that after the feed section there is a shear zone, the countergroove (8) being positioned substantially along the entire length of the shear zone, and that the cross- sectional area of the processing cavity, consisting of the volumes of the grooves (7) in the rotor (1), of the grooves (8) in the stator (2, 3) and of the clearance between them, decreases at least partially continuously along the axis of the extruder. 28
13. An apparatus according to claim 12, characterized in that the rotor (1) and the stator (2, 3) are cylindrical, and that the cross-section of the countergroove (8) decreases substantially evenly to the end of the shear zone.
14. An apparatus according to claim 12 or 13, characterized in that the width of the countergroove (8) is smaller than the width of the flights (7a) between the grooves (7) provided on the other side of the feed gap (4).
15. An apparatus according to any one of claims 12 to 14, characterized in that the width of the countergroove (8) is about 30 to
50% smaller than the width of the groove (7) provided on the other side of the feed gap (4).
16. An apparatus according to any one of claims 12 to 15, characterized in that the gradient of the countergroove (8) is about 1 to 90°, preferably half of the gradient of the groove (7) on the other side of the feed gap (4), most preferably 3 to 10°.
17. An apparatus according to any one of claims 12 or 14 to 16, characterized in that the feed gap (4) is conical at least at a section of its length in such a way that the diameter of the feed gap (4) at the end of the supply direction of material is greater than its diameter closer to the output end of the material, and that the ratio of the diameter of the wider part of the cone to the diameter of the narrower part approximately equals the ratio of the density of the solid mass of the material to be extruded to the bulk density of the mass.
18. An apparatus according to claim 17, characterized in that material can be supplied to the feed gap (4) with several supply means (6) that are located differently in the axial direction and/or the circumferential direction of the apparatus.
19. An apparatus according to claim 17 or 18, characterized in that the ratio of the width of the groove (7) to the depth thereof is between 2 and 7.
20. An apparatus according to any one of claims 12 to 19, characterized in that the grooves (7) have a substantially semicircular cross-section. 29
21. An apparatus according to any one of claims 12 to 19, characterized in that the grooves (7) have a substantially triangular cross-section.
22. An apparatus according to claim 21, characterized in that at least some of the flights (7a) of the grooves (7) are made sloping in such a way that the clearance between the rotor (1) and the stator (2, 3) is greater at the front edge of the flight (7a) than at the rear edge of the flight (7a).
23. An apparatus according to any one of claims 12 to 22, characterized in that outside the rotor (1) there is an outer stator (2) and inside there is an inner stator (3), and that material is supplied with the same supply means (6) both to the exterior and the interior of the rotor (1), the rotor (1) comprising feed gaps (13) with bevels (13a) that are adapted to supply material to the exterior of the rotor (1) through every other feed gap (13) and to the interior of the rotor through ever other gap.
24. An apparatus according to any one of claims 12 to 23, characterized in that material is supplied to the feed gap (4) with a supply means (6) that is a force feed screw.
25. An apparatus according to any one of claims 12 to 24, characterized in that the rotor (1 ) and the stator (2, 3) are coated with a very wear-resistant coating agent, and the material they are made of has better thermal conductivity than tool steel.
26. An apparatus according to any one of claims 12 to 25, characterized in that after the shear zone the grooves (7) in the rotor (1 ) and the grooves (8) in the stator (2, 3) are same-handed.
27. A plastic product containing matrix plastic to which 1 to 30% of barrier plastic has been added in such a way that a laminar structure is formed, characterized in that the barrier plastic is positioned in the product (11) by rotational flow in an extruder groove in such a way that it forms a laminar structure of a shape of a flattened roll.
28. A plastic product according to claim 27, characterized in that the matrix plastic is polyethylene and the barrier plastic is polyamide weldable with polyethylene.
29. A plastic product according to claim 27, characterized in that the matrix plastic is polyethylene and the barrier plastic is polypropylene. 30
30. A plastic product according to claim 27, characterized in that the barrier plastic is aliphatic polyketone.
31. A plastic product according to any one of claims 27 to 30, characterized in that the matrix plastic is cross-linked polyethylene.
32. A plastic product according to any one of claims 27 to 31, characterized in that the matrix plastic and the barrier plastic do not intermix.
33. A multilayer plastic product having a thicker outer layer made of cross-linked polyethylene and an inner layer of barrier plastic, characterized in that the barrier plastic is arranged to prevent the migration of the rest products of the cross-linkage of the outer layer to the inner surface of the product.
34. A plastic product according to claim 33, characterized in that the barrier plastic is aliphatic polyketone.
35. A plastic product manufactured with an apparatus of claim 12, characterized in that the plastic product mainly consists of cross¬ linked polyethylene having a molecular weight of over 200 000 g/mol, preferably over 300000 g/mol.
Priority Applications (18)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53586697A JP2001501549A (en) | 1996-04-04 | 1997-03-19 | Manufacturing method and equipment for extruded plastic products, and plastic products |
| UA98105221A UA46100C2 (en) | 1996-04-04 | 1997-03-19 | METHOD AND DEVICE FOR MANUFACTURE OF EXTRUDED PRODUCT AND MULTILAYERED PLASTIC PRODUCT (OPTIONS) |
| IL12643697A IL126436A (en) | 1996-04-04 | 1997-03-19 | Method and apparatus for manufacturing an extruded plastic product, and a plastic product |
| EP97914334A EP0912316B1 (en) | 1996-04-04 | 1997-03-19 | A method and an apparatus for manufacturing an extruded plastic product |
| SK1370-98A SK284796B6 (en) | 1996-04-04 | 1997-03-19 | Method for manufacturing extrudable products and device for carrying out the method |
| CA002250399A CA2250399C (en) | 1996-04-04 | 1997-03-19 | A method and an apparatus for manufacturing an extruded plastic product, and a plastic product |
| EA199800789A EA000540B1 (en) | 1996-04-04 | 1997-03-19 | A method and apparatus for manufacturing an extruded plastic product, and a plastic product |
| AU21614/97A AU721500B2 (en) | 1996-04-04 | 1997-03-19 | A method and an apparatus for manufacturing an extruded plastic product, and a plastic product |
| EE9800342A EE04393B1 (en) | 1996-04-04 | 1997-03-19 | Method and apparatus for making extruded products |
| AT97914334T ATE227634T1 (en) | 1996-04-04 | 1997-03-19 | METHOD AND DEVICE FOR EXTRUDING A PLASTIC OBJECT |
| BR9708594A BR9708594A (en) | 1996-04-04 | 1997-03-19 | Method and apparatus for the manufacture of an extruded plastic product and plastic product |
| US09/142,113 US6309574B1 (en) | 1994-04-04 | 1997-03-19 | Extrusion of high molecular weight polymers |
| DE69717107T DE69717107T2 (en) | 1996-04-04 | 1997-03-19 | METHOD AND DEVICE FOR EXTRUDING A PLASTIC OBJECT |
| RO98-01448A RO120128B1 (en) | 1996-04-04 | 1997-03-19 | Process and installation for obtaining an extruded product made of plastics |
| IL14850697A IL148506A0 (en) | 1996-04-04 | 1997-03-19 | A method and an apparatus for manufacturing an extruded plastic product, and a plastic product |
| IS4846A IS4846A (en) | 1996-04-04 | 1998-09-14 | Process and apparatus for the production of extruded plastics, and plastics |
| PL328994A PL182591B1 (en) | 1996-04-04 | 1998-09-28 | Method of and apparatus for manufacturing an extruded plastic article and extruded article obtained thereby |
| NO984596A NO984596L (en) | 1996-04-04 | 1998-10-01 | Method and apparatus for producing an extruded plastic product, as well as a plastic product made by the method |
Applications Claiming Priority (14)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI961540A FI103185B1 (en) | 1996-04-04 | 1996-04-04 | A method for adjusting the properties of an extrudable product and an extruder |
| FI961822A FI106005B (en) | 1995-12-12 | 1996-04-29 | Method for the manufacture of homogeneous material by means of an extruder and an extruder |
| FI961540 | 1996-04-29 | ||
| FI961822 | 1996-04-29 | ||
| PCT/FI1996/000261 WO1997001428A1 (en) | 1995-06-26 | 1996-05-08 | Extrusion apparatus and method for orienting plastic material by using an extrusion apparatus |
| USPCT/FI96/00261 | 1996-05-08 | ||
| USPCT/FI96/00502 | 1996-09-20 | ||
| PCT/FI1996/000502 WO1997010940A1 (en) | 1995-09-20 | 1996-09-20 | Method and apparatus for making an extrusion product, and an extrusion product |
| FI964991A FI101950B1 (en) | 1996-12-12 | 1996-12-12 | Method and equipment for utilizing recyclable plastic material and plastic product made with a press device |
| FI964988A FI104055B (en) | 1996-04-29 | 1996-12-12 | Extrusion process, extruder and plastic product |
| FI964988 | 1996-12-12 | ||
| FI964991 | 1996-12-12 | ||
| FI965182A FI965182A (en) | 1996-04-04 | 1996-12-20 | Process and apparatus for producing an extruded plastic product and plastic product |
| FI965182 | 1996-12-20 |
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US09/142,113 A-371-Of-International US6309574B1 (en) | 1994-04-04 | 1997-03-19 | Extrusion of high molecular weight polymers |
| US09/942,109 Division US6689472B2 (en) | 1996-04-04 | 2001-08-28 | Apparatus for extrusion of polymers and plastic products formed with the apparatus |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| WO1997037830A2 WO1997037830A2 (en) | 1997-10-16 |
| WO1997037830A3 WO1997037830A3 (en) | 1997-11-13 |
| WO1997037830B1 true WO1997037830B1 (en) | 1997-12-11 |
Family
ID=27514656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FI1997/000180 WO1997037830A2 (en) | 1994-04-04 | 1997-03-19 | A method and an apparatus for manufacturing an extruded plastic product, and a plastic product |
Country Status (22)
| Country | Link |
|---|---|
| US (2) | US6309574B1 (en) |
| EP (1) | EP0912316B1 (en) |
| JP (1) | JP2001501549A (en) |
| CN (2) | CN1087685C (en) |
| AT (1) | ATE227634T1 (en) |
| AU (1) | AU721500B2 (en) |
| BR (1) | BR9708594A (en) |
| CA (1) | CA2250399C (en) |
| CZ (1) | CZ298147B6 (en) |
| DE (1) | DE69717107T2 (en) |
| EA (1) | EA000540B1 (en) |
| EE (1) | EE04393B1 (en) |
| FI (1) | FI965182A (en) |
| GE (1) | GEP20012382B (en) |
| IL (2) | IL126436A (en) |
| NO (1) | NO984596L (en) |
| PL (1) | PL182591B1 (en) |
| RO (1) | RO120128B1 (en) |
| SK (1) | SK284796B6 (en) |
| TR (1) | TR199801717T2 (en) |
| UA (1) | UA46100C2 (en) |
| WO (1) | WO1997037830A2 (en) |
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| SE519100C2 (en) | 1998-10-23 | 2003-01-14 | Wirsbo Bruks Ab | Apparatus and method for manufacturing extrudable moldings of cross-linkable polymeric materials |
| FI111058B (en) * | 2000-03-21 | 2003-05-30 | Conenor Oy | Device for compressing material |
| FI111057B (en) * | 2000-05-29 | 2003-05-30 | Conenor Oy | Extrusion procedure and extruder |
| FI114299B (en) * | 2001-06-25 | 2004-09-30 | Conenor Oy | Method for handling various materials and material handling device |
| US7131829B2 (en) * | 2004-07-02 | 2006-11-07 | Yamaguchi Mfg. Works, Ltd. | Spiral die assembly |
| US20060024447A1 (en) * | 2004-08-02 | 2006-02-02 | Mccomas Edward | Electroless plating with nanometer particles |
| US20060106147A1 (en) * | 2004-11-12 | 2006-05-18 | Fasulo Paula D | Method for making nanocomposite materials |
| JP4749810B2 (en) * | 2005-09-14 | 2011-08-17 | アイ・ケー・ジー株式会社 | Polymer material temperature controller |
| US7513766B2 (en) * | 2005-10-11 | 2009-04-07 | Cryovac, Inc. | Extrusion apparatus having a driven feed segment |
| CN102285087A (en) * | 2011-06-10 | 2011-12-21 | 北京化工大学 | Extruding machine with tapered helical disk |
| GB201112475D0 (en) * | 2011-07-20 | 2011-08-31 | Kritis Plastika | Concentric co-extrusion die |
| RU2484957C1 (en) * | 2011-11-24 | 2013-06-20 | Общество с ограниченной ответственностью "ИНЭЛ" (ООО "ИНЭЛ") | Device for production of double-side pistons |
| CN105082512B (en) * | 2015-08-12 | 2017-06-20 | 华南理工大学 | Melt extrusion pressure-driven has the current equalizing method and device of inside and outside spiral shell rib rotor |
| DE102017002274A1 (en) * | 2016-08-04 | 2018-02-08 | Reifenhäuser GmbH & Co. KG Maschinenfabrik | Multi-layer blowing head for a blown film line, blown film line and method for operating a blown film line |
| FI129682B (en) | 2016-08-26 | 2022-06-30 | Teknologian Tutkimuskeskus Vtt Oy | Single-screw extruder and method |
| FR3077013B1 (en) * | 2018-01-24 | 2023-12-15 | Aptar France Sas | FLUID PRODUCT DISTRIBUTION DEVICE. |
| JP7024599B2 (en) * | 2018-05-23 | 2022-02-24 | セイコーエプソン株式会社 | Thermoplastic equipment, injection molding machine and modeling equipment |
| DE102018212970A1 (en) * | 2018-08-02 | 2020-02-06 | Siemens Aktiengesellschaft | Device and method for in-situ screw impregnation and extrusion of continuous fibers |
| TWI802421B (en) * | 2022-05-25 | 2023-05-11 | 安炬科技股份有限公司 | Composite material manufacturing equipment |
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-
1996
- 1996-12-20 FI FI965182A patent/FI965182A/en not_active Application Discontinuation
-
1997
- 1997-03-19 IL IL12643697A patent/IL126436A/en not_active IP Right Cessation
- 1997-03-19 UA UA98105221A patent/UA46100C2/en unknown
- 1997-03-19 RO RO98-01448A patent/RO120128B1/en unknown
- 1997-03-19 SK SK1370-98A patent/SK284796B6/en not_active IP Right Cessation
- 1997-03-19 TR TR1998/01717T patent/TR199801717T2/en unknown
- 1997-03-19 CA CA002250399A patent/CA2250399C/en not_active Expired - Fee Related
- 1997-03-19 WO PCT/FI1997/000180 patent/WO1997037830A2/en active IP Right Grant
- 1997-03-19 IL IL14850697A patent/IL148506A0/en unknown
- 1997-03-19 CZ CZ0316398A patent/CZ298147B6/en not_active IP Right Cessation
- 1997-03-19 EP EP97914334A patent/EP0912316B1/en not_active Expired - Lifetime
- 1997-03-19 AU AU21614/97A patent/AU721500B2/en not_active Ceased
- 1997-03-19 EE EE9800342A patent/EE04393B1/en not_active IP Right Cessation
- 1997-03-19 CN CN97193580A patent/CN1087685C/en not_active Expired - Fee Related
- 1997-03-19 EA EA199800789A patent/EA000540B1/en not_active IP Right Cessation
- 1997-03-19 AT AT97914334T patent/ATE227634T1/en not_active IP Right Cessation
- 1997-03-19 GE GE3262A patent/GEP20012382B/en unknown
- 1997-03-19 BR BR9708594A patent/BR9708594A/en not_active IP Right Cessation
- 1997-03-19 US US09/142,113 patent/US6309574B1/en not_active Expired - Fee Related
- 1997-03-19 JP JP53586697A patent/JP2001501549A/en not_active Ceased
- 1997-03-19 DE DE69717107T patent/DE69717107T2/en not_active Expired - Lifetime
-
1998
- 1998-09-28 PL PL328994A patent/PL182591B1/en not_active IP Right Cessation
- 1998-10-01 NO NO984596A patent/NO984596L/en not_active Application Discontinuation
-
2000
- 2000-09-22 CN CN00128793A patent/CN1289672A/en active Pending
-
2001
- 2001-08-28 US US09/942,109 patent/US6689472B2/en not_active Expired - Fee Related
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