GB829152A - Apparatus and process for pelleting thermoplastic materials - Google Patents
Apparatus and process for pelleting thermoplastic materialsInfo
- Publication number
- GB829152A GB829152A GB23406/57A GB2340657A GB829152A GB 829152 A GB829152 A GB 829152A GB 23406/57 A GB23406/57 A GB 23406/57A GB 2340657 A GB2340657 A GB 2340657A GB 829152 A GB829152 A GB 829152A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pelleting
- fluid
- inlet
- temperature
- water
- 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
- 239000012815 thermoplastic material Substances 0.000 title abstract 2
- 239000000463 material Substances 0.000 abstract 4
- 239000012530 fluid Substances 0.000 abstract 3
- 229920003023 plastic Polymers 0.000 abstract 3
- 239000004033 plastic Substances 0.000 abstract 3
- 238000001125 extrusion Methods 0.000 abstract 2
- 239000008188 pellet Substances 0.000 abstract 2
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 2
- 230000007797 corrosion Effects 0.000 abstract 1
- 238000005260 corrosion Methods 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 239000003112 inhibitor Substances 0.000 abstract 1
- 229920000573 polyethylene Polymers 0.000 abstract 1
- 235000010288 sodium nitrite Nutrition 0.000 abstract 1
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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
829,152. Pelleting plastic materials. CANADIAN INDUSTRIES Ltd. July 24, 1957 [Aug. 4, 1956], No. 23406/57. Class 87(2). An apparatus for pelleting thermoplastic materials comprises a hollow frusto-conical die 1 having a plurality of extrusion orifices 2 on its internal face, at least one knife 17 arranged to revolve in a plane parallel to the internal face to sever the extruded material and means to conduct fluid through an internal core 18 to carry away the severed pellets. The die 1 is formed by inner and outer members 7, 8 with an insulating layer 9 between, has a jacket 3 with an inlet 5 for the plastic material, is surrounded by a heating jacket 4, and has the extrusion orifices 2, in four rows, staggered to allow the cut pellets to rise freely to a fluid outlet 26. The knives 17 on the core 18 are mounted on a shaft 20 which is rotatably sealed in an inlet 15 for the fluid which may be water at a pressure and temperature of ten to twenty p.s.i. and 85‹F to 140‹F. The plastic material may be polythene at a temperature of from 275‹F to 485‹F. The water may contain a corrosion inhibitor, e.g. sodium nitrite. Specification 774,681 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA829152X | 1956-08-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB829152A true GB829152A (en) | 1960-02-24 |
Family
ID=4172615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB23406/57A Expired GB829152A (en) | 1956-08-04 | 1957-07-24 | Apparatus and process for pelleting thermoplastic materials |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB829152A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2177646A1 (en) * | 1972-03-30 | 1973-11-09 | Welding Engineers | Cutting head for thermoplastic pellets - applied to extruded material |
| FR2318719A1 (en) * | 1975-07-25 | 1977-02-18 | Japan Steel Works Ltd | SUBMERSIBLE CUTTING ELEMENT PASTILER |
-
1957
- 1957-07-24 GB GB23406/57A patent/GB829152A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2177646A1 (en) * | 1972-03-30 | 1973-11-09 | Welding Engineers | Cutting head for thermoplastic pellets - applied to extruded material |
| FR2318719A1 (en) * | 1975-07-25 | 1977-02-18 | Japan Steel Works Ltd | SUBMERSIBLE CUTTING ELEMENT PASTILER |
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