GB886211A - Process of and apparatus for manufacturing polyethylene granulates - Google Patents
Process of and apparatus for manufacturing polyethylene granulatesInfo
- Publication number
- GB886211A GB886211A GB1462660A GB1462660A GB886211A GB 886211 A GB886211 A GB 886211A GB 1462660 A GB1462660 A GB 1462660A GB 1462660 A GB1462660 A GB 1462660A GB 886211 A GB886211 A GB 886211A
- Authority
- GB
- United Kingdom
- Prior art keywords
- polyethylene
- granulating device
- granulates
- point
- worm
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
A process for the manufacture of granulates of polyethylene produced by a high pressure process comprises maintaining the polyethylene at 150 DEG to 190 DEG C. and at an excess pressure of up to 10 atmospheres, and feeding the polyethylene at constant rate to a granulating device in which it is, in one operation, initially mixed intensively and subsequently granulated. The polyethylene may be subjected to counter-mixing in the granulating device. Additives, e.g. stabilizers, may be incorporated in the polyethylene by metering into the granulating device at a point closely preceding the point of entry of the polyethylene. Apparatus suitable for carrying out the process of the invention is described and illustrated.ALSO:A process for the manufacture of granulates of polyethylene produced by a high pressure process comprises maintaining the polyethylene at 150 to 190 DEG C. and at an excess pressure of up to ten atmospheres, and feeding the polyethylene at a constant rate to a granulating device in which it is in one operation initially mixed intensively and subsequently granulated. The granulating device may be in the form of a worm granulator provided at the outlet with a nozzle and cutting device, and the polyethylene may be subjected to counter-mixing therein, e.g. by providing large clearance between the worm and cylinder wall, or damming sills or worm runs which may be reciprocally displaced in the axial direction. Additives, e.g. stabilisers, may be incorporated in the polyethylene by introducing them into the granulating device at a point closely preceding the point of entry of the polyethylene. Apparatus suitable for carrying out the process of the invention is described and illustrated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1462660A GB886211A (en) | 1960-04-26 | 1960-04-26 | Process of and apparatus for manufacturing polyethylene granulates |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1462660A GB886211A (en) | 1960-04-26 | 1960-04-26 | Process of and apparatus for manufacturing polyethylene granulates |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB886211A true GB886211A (en) | 1962-01-03 |
Family
ID=10044662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1462660A Expired GB886211A (en) | 1960-04-26 | 1960-04-26 | Process of and apparatus for manufacturing polyethylene granulates |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB886211A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1005972A2 (en) * | 1998-12-04 | 2000-06-07 | Basf Corporation | Apparatus and method for direct injection of additives into a polymer melt stream |
-
1960
- 1960-04-26 GB GB1462660A patent/GB886211A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1005972A2 (en) * | 1998-12-04 | 2000-06-07 | Basf Corporation | Apparatus and method for direct injection of additives into a polymer melt stream |
| EP1005972A3 (en) * | 1998-12-04 | 2001-12-05 | Basf Corporation | Apparatus and method for direct injection of additives into a polymer melt stream |
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