CA1128270A - Apparatus for granulating melts of plastics material or plastic material - Google Patents
Apparatus for granulating melts of plastics material or plastic materialInfo
- Publication number
- CA1128270A CA1128270A CA329,214A CA329214A CA1128270A CA 1128270 A CA1128270 A CA 1128270A CA 329214 A CA329214 A CA 329214A CA 1128270 A CA1128270 A CA 1128270A
- Authority
- CA
- Canada
- Prior art keywords
- cutting
- blades
- plate
- holding plate
- shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B9/00—Making granules
- B29B9/02—Making granules by dividing preformed material
- B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
- B29B9/065—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion under-water, e.g. underwater pelletizers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
- B29C48/345—Extrusion nozzles comprising two or more adjacently arranged ports, for simultaneously extruding multiple strands, e.g. for pelletising
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion 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
- B29C48/04—Particle-shaped
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Glanulating (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE:
Granulating apparatus wherein a cutter shaft mounting a multi-blade cutting implement, bearing means for the cutter shaft and drive means therefor are combined into a unit, which unit is mounted so that it can be swiveled about a bearing surface adjacent a cutter plate to adjust the cooperation of the blades of the cutting implement with the cutting plate. Screw drives are preferably provided to effect the adjustment.
Granulating apparatus wherein a cutter shaft mounting a multi-blade cutting implement, bearing means for the cutter shaft and drive means therefor are combined into a unit, which unit is mounted so that it can be swiveled about a bearing surface adjacent a cutter plate to adjust the cooperation of the blades of the cutting implement with the cutting plate. Screw drives are preferably provided to effect the adjustment.
Description
~Z~;~70 The invention relates to apparatus for yranulating plastics melt and other materials.
Apparatus o~ this kind has been p~eviously proposed comprising a granulating head having a cutting plate and a mul-ti-blade cutting implement mounted in front of the plate, and a housing surrounding the granulating head and having means for cooling and conveying away the granules chopped off.
Such apparatus is known from U.S. patent specification . 3,317,957, but in such apparatus peripheral plane parallelism cannot be obtained between the cutting blades and cutting plate.
If there are found to be different gaps between the individual cutting blades and the cutting plate as a result of manufacturing tolerances, there is no possibility of adjusting the blades to the plate. The plates can only be moved horizontally all together, and irregularities at one side cannot be dealt with.
The invention has among its objects to ensure that plane parallelism! i.e. an equal spacing around the periphery, is obtained between the rotating cutting blades and the cutting plate.
The invention further has among its objects to ensure good, exact cutting of plastics strands emerging from the cutting plate, wi-thout the polymer, part of which is highly fluid, smearing the cutting plate or forming snarls~ It also seeks to lengthen the useful life of the cutting blades and plate.
Accordingly, the invention as herein broadly claimed is an apparatus for granulating plastics melt and l:ike materials, comprising a granulating head, a housing surrounding said gra-nulating head, said housing including means for cooling and con-veying away granulated material, a cutting plate on said gra-nulating head, a rotatable cutter assembly, including a plurality of cutter blades cooperating with said cutting plate to gra-nulate said materials, a rotatable cutter shaft on ~hich said ~Z827(~
cutter assembly is mounted, drive means and bearing means for said shaft; said drive means, bearing means, shaf-t and cutter assembly being connected and operable as a uni~, and mounting means for said unit includiny means providiny a beariny surace adjacent said cutting plate such that said unit can be swivelled to adjust the cooperation of the blades o said cutter assembly with said cutting plate whereby the distance between said blades and said cutting plate can be maintained at a desired and constant spacing, and means operatively connected to said unit for effecting swivelling adjustment thereof.
Preferably the bearing means comprises a bearing housing, bearings, a cutter shaft mounting blade holders and cutting blades fixed to the blade holders, a holding plate, an adjusting spindle and a guard ring.
The apparatus advantageously includes screw drives to effect swivelling adjustment of the cutter shaft, bearing means and drive means about the bearing surface, the screw drives being mounted on an ou~er sleeve and engaging the holding plate.
Thus those parts of the cutter shaft, bearing means and drive means which are combined as a unit can be swivelled and adjusted by means of the screw drives and this enables the dis-tance between the cutting blades and plate to be adjusted so that it is const.ant around the whole periphery.
Differences in the spacing can be made apparent by fastening a gap measuring instrument with a scale onto a blade holder and making the blade holder describe one complete revolu-tion. The differences revealed by the reading can then be com-pensated for exactly by appropriate movemen-t of -the screw drives.
Advantageously the cutter shaft, bearing means and drive means are supported on a centering ring forming the bearing surface and are desi~ned to be centered horizontally by the screw drivesO Preferably plane parallelism to about 0~01 mm ~ ~f~ 8 Z7 0 is obtained between the cutting blades and plate regardless o any manufacturing inacauracies. This can ensure a clean cut, all the blades having the same clearance in each posltion, and extremely little wear on the blades and cutting plate, The invention is diagrammatically illustrated by way of example in the accompanying drawings, in which:
Figure 1 is longitudlnal section through granulating apparatus according to the invention;
Flgure 2 is a cross-section taken on line II-II of Figure l;
Figure 3 is a cross-section taken on line III-III
of Figure l;
and Figure 4 i5 a cross-section taken on line IV-IV
of Figure 1.
Rererring to the drawings, granulating apparatus has an outer sleeve 1 with an insulating jacket 2 disposed around it. Guide passages 4 for material are provided in a guide sleeve 3. The sleeve 3 is clad with an insulating layer 5. A cutter shaft 7, mounted by bearings 8, 9, is disposed in a bearing housing 6. Blade holders 10 with blades 11 attached thereto are mounted on the lower end of tha cutter shaft.
At the upper end of the cutter shaft 7 parallel axial adjustment means are provided comprising an adjusting spindle 12 and a guard ring 13 to arrest the cutter shaft.
The adjusting spindle 12 can be rotated by means of a lever 14, to provide a coarse height adjustment of the cutting blades 11 with respect to a cutting plate 15.
The cutting plate 15 is located at the underside o the granulator with apertures 16 therein through which the material to be granulated is extruded. The cutting plate ,, -3-~L2827() 15 is ~ixed to the outer sl.eeve l by screws 15~ igure 4) and to the guide sleeve 3.by screws 15b~ The guide sleeve 3 is in turn fixed to a bearing by screws 17a, the bearlng heiny formed by a resiliently deEor~nable centering ring 17 with th~
bearing housing 6 supported on it. Holes ~ are provided in the ring 17 and are directed towards the blades 11.
Cooling air is blown into a cylind.rical space 20 between the bearing housing 6 and the insulating layer 5 through a plurality of connections 19 distributed around the periphery. At the centering ring 17 side of the space 20 the cooling air is forced through the holes 18 towards the cutting blades. The space 20 is closed at the top by an annular wall 36 with the connections 19 leading to it.
The cutter shaft 7 can be rotated by a motor 21 by way of an interposed coupling 22 to compensate for vertical displacement of the shaft 7, and the rotation is transmitted through the holder 10 to the blades 11.
The liquid fused plastics material is pressed through an adapter 23 by an extruder (not shown) attached to it, into the material guide passages 4 and from there to the apertures 16 in the cutting plate 15.
As a means of obtaining plane parallelism between the cutting blades 11 and the cutting plate 15, the following components of the granulator are combined into a unit so as to swivel together as such:
The cutter shaft 7 with the blade holders 10 and outting blades 11 attached to it, the upper and lower bearings 8 and 9 for the.shaft 7~ the bearing housing 6, an upper holding plate 24 fixed to the bearing housing 6, the coupling 22 connecting the cutter shaft 7 to the drive motor 21, and the adjusting spindle 12 with the l~Z8;~70 guide ring 13, the drive motor 21.
The above listed components of the granulator, whlch are constructed as a unit, bear on the centering ring 17 by means of the bearing housing 6, are adjustable and can be swivelled to a limited extend about the resiliently deformable centering ring 17. The ability to swivel is provided by dis-tributing a plurality of differential screw drives 25 around the periphery, the screw drives being joined to the outer sleeve 1 by holding means 26.
To enable the unit to swivel horizontally, apertures 27 are provided in the holding plate 24 to receive cheese head screws 28 the shanks of which are smaller in diameter than the diameter of the apertures 27. In this way the holding plate 24 can move horizontally to a limited extend. Plate springs 29 are disposed between the heads of the screws 28 driven into the guide sleeve 3 and the holding plate 24, and these springs compensate for expansion o the sleeve 3 ln an upward direction.
Since the apertures 27 are larger than the diameter Of the shanks of the screws 28, there is an appropriate ad-justing path for the granulator components combined into a unit.
The granules chopped off are thrown outwardly in a radial direction by the centrifugal force of the cutting blades, and impinge on a surface 30 which is covered with a film of water overflowing a top edge 31 thereof. The film of water carries the chopped off granules downwardly into a granulating chamber 32, from which they can emerge through an outlet 33.
To enable the blades to be serviced, and particularly to enable differences in plane parallelism between the blades 11 and the cutt mg plate 15 to be detected, an outer casing ~L128'~7(~
37 together with the surface 30 are mounted to be movable vertically by means of hydrau~ic cylinders 38 and a rod system 39. When the outer casing 37 is moved downwar~s, the cutting blades 11 and cu~lny plate 15 ~re freel~ accessible~
In order to find any differences in plane parallelism between the cutting blades 11 and the cutting plate 15, a measuring instrument carrying a scale is mounted on one of the balde holders 10 and allowed to revolve once with the holder.
By observing the scale any inaccuracies in plane parallelism between the cutting blades and cutting plate are thus made apparent. According to the values obtained in this way, the screw drives 25 are adjusted (Figure 2), and absolute plane parallelism can be established over the whole periphery, that is to say, the granuIator components which are combined into a unit are swilled and adjusted about the centering ring 17 according to the differences in plane parallelism found.
Since the bottom end of the cylindrical bearing housing 6 is horizontally disposed, substantially on the same plane as the cutting surface, the gap between the blades 11 and cutting plate 15 does not vary when the temperature of the guide sleeve 3 differs from that of the outer sleeve 1. A `
heating cartridge 34 is preferably provided to heat the outer sleeve 1.
Apparatus o~ this kind has been p~eviously proposed comprising a granulating head having a cutting plate and a mul-ti-blade cutting implement mounted in front of the plate, and a housing surrounding the granulating head and having means for cooling and conveying away the granules chopped off.
Such apparatus is known from U.S. patent specification . 3,317,957, but in such apparatus peripheral plane parallelism cannot be obtained between the cutting blades and cutting plate.
If there are found to be different gaps between the individual cutting blades and the cutting plate as a result of manufacturing tolerances, there is no possibility of adjusting the blades to the plate. The plates can only be moved horizontally all together, and irregularities at one side cannot be dealt with.
The invention has among its objects to ensure that plane parallelism! i.e. an equal spacing around the periphery, is obtained between the rotating cutting blades and the cutting plate.
The invention further has among its objects to ensure good, exact cutting of plastics strands emerging from the cutting plate, wi-thout the polymer, part of which is highly fluid, smearing the cutting plate or forming snarls~ It also seeks to lengthen the useful life of the cutting blades and plate.
Accordingly, the invention as herein broadly claimed is an apparatus for granulating plastics melt and l:ike materials, comprising a granulating head, a housing surrounding said gra-nulating head, said housing including means for cooling and con-veying away granulated material, a cutting plate on said gra-nulating head, a rotatable cutter assembly, including a plurality of cutter blades cooperating with said cutting plate to gra-nulate said materials, a rotatable cutter shaft on ~hich said ~Z827(~
cutter assembly is mounted, drive means and bearing means for said shaft; said drive means, bearing means, shaf-t and cutter assembly being connected and operable as a uni~, and mounting means for said unit includiny means providiny a beariny surace adjacent said cutting plate such that said unit can be swivelled to adjust the cooperation of the blades o said cutter assembly with said cutting plate whereby the distance between said blades and said cutting plate can be maintained at a desired and constant spacing, and means operatively connected to said unit for effecting swivelling adjustment thereof.
Preferably the bearing means comprises a bearing housing, bearings, a cutter shaft mounting blade holders and cutting blades fixed to the blade holders, a holding plate, an adjusting spindle and a guard ring.
The apparatus advantageously includes screw drives to effect swivelling adjustment of the cutter shaft, bearing means and drive means about the bearing surface, the screw drives being mounted on an ou~er sleeve and engaging the holding plate.
Thus those parts of the cutter shaft, bearing means and drive means which are combined as a unit can be swivelled and adjusted by means of the screw drives and this enables the dis-tance between the cutting blades and plate to be adjusted so that it is const.ant around the whole periphery.
Differences in the spacing can be made apparent by fastening a gap measuring instrument with a scale onto a blade holder and making the blade holder describe one complete revolu-tion. The differences revealed by the reading can then be com-pensated for exactly by appropriate movemen-t of -the screw drives.
Advantageously the cutter shaft, bearing means and drive means are supported on a centering ring forming the bearing surface and are desi~ned to be centered horizontally by the screw drivesO Preferably plane parallelism to about 0~01 mm ~ ~f~ 8 Z7 0 is obtained between the cutting blades and plate regardless o any manufacturing inacauracies. This can ensure a clean cut, all the blades having the same clearance in each posltion, and extremely little wear on the blades and cutting plate, The invention is diagrammatically illustrated by way of example in the accompanying drawings, in which:
Figure 1 is longitudlnal section through granulating apparatus according to the invention;
Flgure 2 is a cross-section taken on line II-II of Figure l;
Figure 3 is a cross-section taken on line III-III
of Figure l;
and Figure 4 i5 a cross-section taken on line IV-IV
of Figure 1.
Rererring to the drawings, granulating apparatus has an outer sleeve 1 with an insulating jacket 2 disposed around it. Guide passages 4 for material are provided in a guide sleeve 3. The sleeve 3 is clad with an insulating layer 5. A cutter shaft 7, mounted by bearings 8, 9, is disposed in a bearing housing 6. Blade holders 10 with blades 11 attached thereto are mounted on the lower end of tha cutter shaft.
At the upper end of the cutter shaft 7 parallel axial adjustment means are provided comprising an adjusting spindle 12 and a guard ring 13 to arrest the cutter shaft.
The adjusting spindle 12 can be rotated by means of a lever 14, to provide a coarse height adjustment of the cutting blades 11 with respect to a cutting plate 15.
The cutting plate 15 is located at the underside o the granulator with apertures 16 therein through which the material to be granulated is extruded. The cutting plate ,, -3-~L2827() 15 is ~ixed to the outer sl.eeve l by screws 15~ igure 4) and to the guide sleeve 3.by screws 15b~ The guide sleeve 3 is in turn fixed to a bearing by screws 17a, the bearlng heiny formed by a resiliently deEor~nable centering ring 17 with th~
bearing housing 6 supported on it. Holes ~ are provided in the ring 17 and are directed towards the blades 11.
Cooling air is blown into a cylind.rical space 20 between the bearing housing 6 and the insulating layer 5 through a plurality of connections 19 distributed around the periphery. At the centering ring 17 side of the space 20 the cooling air is forced through the holes 18 towards the cutting blades. The space 20 is closed at the top by an annular wall 36 with the connections 19 leading to it.
The cutter shaft 7 can be rotated by a motor 21 by way of an interposed coupling 22 to compensate for vertical displacement of the shaft 7, and the rotation is transmitted through the holder 10 to the blades 11.
The liquid fused plastics material is pressed through an adapter 23 by an extruder (not shown) attached to it, into the material guide passages 4 and from there to the apertures 16 in the cutting plate 15.
As a means of obtaining plane parallelism between the cutting blades 11 and the cutting plate 15, the following components of the granulator are combined into a unit so as to swivel together as such:
The cutter shaft 7 with the blade holders 10 and outting blades 11 attached to it, the upper and lower bearings 8 and 9 for the.shaft 7~ the bearing housing 6, an upper holding plate 24 fixed to the bearing housing 6, the coupling 22 connecting the cutter shaft 7 to the drive motor 21, and the adjusting spindle 12 with the l~Z8;~70 guide ring 13, the drive motor 21.
The above listed components of the granulator, whlch are constructed as a unit, bear on the centering ring 17 by means of the bearing housing 6, are adjustable and can be swivelled to a limited extend about the resiliently deformable centering ring 17. The ability to swivel is provided by dis-tributing a plurality of differential screw drives 25 around the periphery, the screw drives being joined to the outer sleeve 1 by holding means 26.
To enable the unit to swivel horizontally, apertures 27 are provided in the holding plate 24 to receive cheese head screws 28 the shanks of which are smaller in diameter than the diameter of the apertures 27. In this way the holding plate 24 can move horizontally to a limited extend. Plate springs 29 are disposed between the heads of the screws 28 driven into the guide sleeve 3 and the holding plate 24, and these springs compensate for expansion o the sleeve 3 ln an upward direction.
Since the apertures 27 are larger than the diameter Of the shanks of the screws 28, there is an appropriate ad-justing path for the granulator components combined into a unit.
The granules chopped off are thrown outwardly in a radial direction by the centrifugal force of the cutting blades, and impinge on a surface 30 which is covered with a film of water overflowing a top edge 31 thereof. The film of water carries the chopped off granules downwardly into a granulating chamber 32, from which they can emerge through an outlet 33.
To enable the blades to be serviced, and particularly to enable differences in plane parallelism between the blades 11 and the cutt mg plate 15 to be detected, an outer casing ~L128'~7(~
37 together with the surface 30 are mounted to be movable vertically by means of hydrau~ic cylinders 38 and a rod system 39. When the outer casing 37 is moved downwar~s, the cutting blades 11 and cu~lny plate 15 ~re freel~ accessible~
In order to find any differences in plane parallelism between the cutting blades 11 and the cutting plate 15, a measuring instrument carrying a scale is mounted on one of the balde holders 10 and allowed to revolve once with the holder.
By observing the scale any inaccuracies in plane parallelism between the cutting blades and cutting plate are thus made apparent. According to the values obtained in this way, the screw drives 25 are adjusted (Figure 2), and absolute plane parallelism can be established over the whole periphery, that is to say, the granuIator components which are combined into a unit are swilled and adjusted about the centering ring 17 according to the differences in plane parallelism found.
Since the bottom end of the cylindrical bearing housing 6 is horizontally disposed, substantially on the same plane as the cutting surface, the gap between the blades 11 and cutting plate 15 does not vary when the temperature of the guide sleeve 3 differs from that of the outer sleeve 1. A `
heating cartridge 34 is preferably provided to heat the outer sleeve 1.
Claims (9)
1. Apparatus for granulating plastics melt and like materials, comprising a granulating head, a housing surrounding said granulating head, said housing including means for cooling and conveying away granulated material, a cutting plate on said granulating head, a rotatable cutter assembly, including a plurality of cutter blades cooperating with said cutting plate to granulate said materials, a rotatable cutter shaft on which said cutter assembly is mounted, drive means and bearing means for said shaft; said drive means, bearing means shaft and cutter assembly being connected and operable as a unit, and mounting means for said unit including means providing a bearing surface adjacent said cutting plate such that said unit can be swiveled to adjust the cooperation of the blades of said cutter assembly with said cutting plate whereby the distance between said blades and said cutting plate can be maintained at a desired and constant spacing, and means operatively connected to said unit for effecting swiveling adjustment thereof.
2. The apparatus of claim I, wherein said bearing surface is disposed substantially in the same plane as a cutting plane between said cutting plate and said cutting blades.
3. The apparatus of claim 1, wherein said cutting assembly includes blade holders mounted on said cutting shaft and mounting said cutter blades, and said bearing means comprises a bearing housing, bearings, a generally horizontally disposed holding plate, an adjusting spindle and a guard ring.
4. The apparatus of claim 1, wherein said drive means comprises a motor and a coupling to compensate for vertical displacement of said cutter shaft.
5. The apparatus of claim 1, wherein said bearing surface is formed by a resiliently deformable centering ring
6. The apparatus of claim 3, wherein said bearing surface is formed by a resiliently deformable centering ring and said means for effecting swiveling movement of said unit includes screw drive means mounted on an outer sleeve and engaging said holding plate, whereby said holding plate thus can be moved horizontally to effect swiveling movement of said shaft and cutter blades.
7. The apparatus of claim 6, wherein said screw drive means comprise a plurality of differential screw drives engaging the periphery of said holding plate.
8. The apparatus of claim 6, further including a guide sleeve, screws joining said holding plate to said guide sleeve, spring elements disposed between heads of said screws and said holding plate, and apertures in said holding plate to receive said screws, with said apertures being of greater diameter than said screws to allow horizontal displacement of said holding plate.
9. The apparatus of claim 1, further including means for vertically moving said housing, whereby the components of said housing can be moved vertically with respect to said cutting implement and said cutting plate.
The apparatus of claim 1, wherein said means for effecting swiveling movement of said unit comprises a plurality of screw drive members spaced arcuately around said granulating head and exposed at the periphery thereof, each of said screw drive members engaging a holding plate disposed generally horizontally around said shaft above said bearing means, whereby said holding plate can be moved horizontally as desired to swivel said shaft and said cutter blades relative to said cutting plate thereby to reestablish the constant spacing between said blades and said cutting plate.
The apparatus of claim 1, wherein said means for effecting swiveling movement of said unit comprises a plurality of screw drive members spaced arcuately around said granulating head and exposed at the periphery thereof, each of said screw drive members engaging a holding plate disposed generally horizontally around said shaft above said bearing means, whereby said holding plate can be moved horizontally as desired to swivel said shaft and said cutter blades relative to said cutting plate thereby to reestablish the constant spacing between said blades and said cutting plate.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2825288A DE2825288C3 (en) | 1978-06-09 | 1978-06-09 | Device for granulating plastic melts and plastic masses |
| DEP2825288.2 | 1978-06-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1128270A true CA1128270A (en) | 1982-07-27 |
Family
ID=6041401
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA329,214A Expired CA1128270A (en) | 1978-06-09 | 1979-06-06 | Apparatus for granulating melts of plastics material or plastic material |
Country Status (8)
| Country | Link |
|---|---|
| JP (1) | JPS54161666A (en) |
| CA (1) | CA1128270A (en) |
| DE (1) | DE2825288C3 (en) |
| FR (1) | FR2427891A1 (en) |
| GB (1) | GB2023485B (en) |
| IT (1) | IT7921746U1 (en) |
| NL (1) | NL7904527A (en) |
| SU (1) | SU890963A3 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0220307A (en) * | 1988-07-08 | 1990-01-23 | Plast Kogaku Kenkyusho:Kk | Pelletizer for thermoplastic material |
| JP4252180B2 (en) * | 2000-01-17 | 2009-04-08 | 株式会社日本製鋼所 | Dies used in underwater cut plastic granulators |
| ITTO20070026A1 (en) * | 2007-01-17 | 2008-07-18 | Ferioli Filippo S P A | EXTRUSION EQUIPMENT OF PLASTIC MATERIALS |
| AT508199B1 (en) * | 2008-12-16 | 2011-05-15 | Erema | DEVICE FOR HOT SPILL GRANULATION |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3143766A (en) * | 1961-04-17 | 1964-08-11 | Baker Perkins Inc | Pelletizing apparatus |
| US3292212A (en) * | 1964-05-27 | 1966-12-20 | Midland Ross Corp | Pelleting apparatus |
| US3271821A (en) * | 1964-07-24 | 1966-09-13 | Frank W Egan & Company | Underwater pelletizer |
| DE1919748U (en) * | 1964-11-27 | 1965-07-15 | Barmag Barmer Maschf | DEVICE FOR PELLETING THERMOPLASTIC PLASTICS, ESPECIALLY UNDER WATER. |
| US3317957A (en) * | 1965-06-11 | 1967-05-09 | Nrm Corp | Pelletizer |
| DE1964413C3 (en) * | 1969-12-23 | 1973-10-04 | Hermann Berstorff Maschinenbau Gmbh, 3000 Hannover | Device for granulating thermoplastics |
| JPS51986A (en) * | 1974-06-21 | 1976-01-07 | Nippon Kogaku Kk | JIDOZOFUKU SEIGIYOSOCHIOJUSURU HENKOKAISEKISOCHI |
| DE2638126C3 (en) * | 1976-08-25 | 1979-08-23 | Basf Ag, 6700 Ludwigshafen | Device for granulating thermoplastics |
-
1978
- 1978-06-09 DE DE2825288A patent/DE2825288C3/en not_active Expired
-
1979
- 1979-06-01 SU SU792770792A patent/SU890963A3/en active
- 1979-06-06 FR FR7914406A patent/FR2427891A1/en active Granted
- 1979-06-06 CA CA329,214A patent/CA1128270A/en not_active Expired
- 1979-06-06 IT ITMI1979U21746U patent/IT7921746U1/en unknown
- 1979-06-06 JP JP7001279A patent/JPS54161666A/en active Granted
- 1979-06-06 GB GB7919677A patent/GB2023485B/en not_active Expired
- 1979-06-08 NL NL7904527A patent/NL7904527A/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| FR2427891B1 (en) | 1984-11-02 |
| DE2825288B2 (en) | 1980-08-21 |
| DE2825288C3 (en) | 1983-12-29 |
| FR2427891A1 (en) | 1980-01-04 |
| SU890963A3 (en) | 1981-12-15 |
| IT7921746V0 (en) | 1979-06-06 |
| JPS6311123B2 (en) | 1988-03-11 |
| GB2023485A (en) | 1980-01-03 |
| JPS54161666A (en) | 1979-12-21 |
| NL7904527A (en) | 1979-12-11 |
| IT7921746U1 (en) | 1980-12-06 |
| DE2825288A1 (en) | 1979-12-13 |
| GB2023485B (en) | 1982-10-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA1118174A (en) | Granulating apparatus | |
| US4285652A (en) | Granulating apparatus | |
| GB2184972A (en) | An apparatus for extrusion granulating of plastics materials | |
| US4123207A (en) | Underwater pelletizer and heat exchanger die plate | |
| EP0152844B1 (en) | Die for hot die face cutting thermoplastic polymers | |
| US5611983A (en) | Process for pelletizing polymer | |
| US5017119A (en) | Cutting means for underwater pelletizer | |
| US3143766A (en) | Pelletizing apparatus | |
| US2413016A (en) | Cutting machine | |
| CA1128270A (en) | Apparatus for granulating melts of plastics material or plastic material | |
| US4021176A (en) | Cutting apparatus | |
| WO1994019161A1 (en) | Spring-loaded self-adjusting melt cutter | |
| KR101302574B1 (en) | Device for the production of granulate grains from a plastic melt | |
| US5292240A (en) | Pelletizer with cutting knife control | |
| US4269584A (en) | Hot pelletizer for extruders | |
| AU690306B2 (en) | Method and apparatus for high speed cutting of elastomeric materials | |
| JP2010105392A (en) | Device for machining die plate of extruder | |
| US4046497A (en) | Cutting apparatus | |
| US20080164352A1 (en) | Granulating Device | |
| US20020150641A1 (en) | Underwater pelletizer and cutting system therefor | |
| CA1305404C (en) | Cutting device for high-temperature granulation of thermoplastic polymers | |
| JP4008027B2 (en) | Underwater granulator | |
| CN221985521U (en) | Underwater hot pelletizing cutter device and pelletizer | |
| CA1147519A (en) | Adjustable pelletizing apparatus | |
| US4081927A (en) | Apparatus for grinding a rabbet in an edge of a glass sheet |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |