GB1283165A - Method and apparatus for pelletizing synthetic resinous material - Google Patents
Method and apparatus for pelletizing synthetic resinous materialInfo
- Publication number
- GB1283165A GB1283165A GB688771A GB688771A GB1283165A GB 1283165 A GB1283165 A GB 1283165A GB 688771 A GB688771 A GB 688771A GB 688771 A GB688771 A GB 688771A GB 1283165 A GB1283165 A GB 1283165A
- Authority
- GB
- United Kingdom
- Prior art keywords
- drum
- strands
- drums
- rubber
- cutting
- 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
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
- B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
- B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
- B26D1/25—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member
- B26D1/34—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut
- B26D1/38—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut and coacting with a fixed blade or other fixed member
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
1283165 Roller mills DOW CHEMICAL CO 15 March 1971 6887/71 Heading B2A [Also in Division B5] Strands of synthetic resin are chopped into pellets by a pair of rotating toothed drums, each drum having shearing teeth arranged to slidingly engage those of the other drum, the engaging face 33 of each tooth being generally radial and defining a relief angle A with the radius of between 0‹ and 30‹, the included angle B between the engaging face 33 and the non-engaging face 34 being between 10‹ and 45‹. Preferably the tip of each tooth has a small flat 35, and the rotation of the drums is synchronised e.g. by arranging that one drum is driven and imparts the rotation to the second to which a braking force is applied to keep the interengaging teeth smoothly meshing. The strands may be fed into the cutting drum from rolls driven by belt and pulley transmission from the first drum, variable speed or variable effective diameter pulleys being used (Fig. 3, not shown). For high-speed operation, especially with small diameter drums, a further roll is placed adjacent to the first cutting drum to bring the strands into close contact with the latter before they are fed around into the nip between the severing teeth. When cutting very viscous materials a mould release composition such as a polysiloxane is applied to the drum surface and when cutting freshly extruded material, or other material at high temperature, the drums are cooled e.g. by a water spray or by air, nitrogen or alcohol. The plastics strands to be pelletized are intended to be soft or rubbery and if hard or brittle material is to be cut it should be heated first, a bending test to categorise the material being given. A detailed dimensioned example of the pelletizing of a blend of 50/50 w/w polytertiary butyl styrene and polyvinyl chloride is described; other exemplary materials are polystyrene (at 245‹F), uncured rubber, plasticized polyvinyl chloride, rubber-modified polystyrene, rubber-modified polymethyl methacrylate and graft polymers of styrene and rubber. Working speeds may be as low as 1 foot per sec. or as high as 2000 ft. per sec.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB688771A GB1283165A (en) | 1971-03-15 | 1971-03-15 | Method and apparatus for pelletizing synthetic resinous material |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB688771A GB1283165A (en) | 1971-03-15 | 1971-03-15 | Method and apparatus for pelletizing synthetic resinous material |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1283165A true GB1283165A (en) | 1972-07-26 |
Family
ID=9822616
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB688771A Expired GB1283165A (en) | 1971-03-15 | 1971-03-15 | Method and apparatus for pelletizing synthetic resinous material |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1283165A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2145013A (en) * | 1983-07-12 | 1985-03-20 | Derek Sidney Izzard | Comminuting wires |
-
1971
- 1971-03-15 GB GB688771A patent/GB1283165A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2145013A (en) * | 1983-07-12 | 1985-03-20 | Derek Sidney Izzard | Comminuting wires |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
SU1075955A3 (en) | Method for making thermoplastic sheet material | |
US3515325A (en) | Apparatus for fibrillating a transversely oriented plastic material | |
US3478138A (en) | Method of making thermoplastic articles having non-planar surface contours | |
US5658514A (en) | Method for producing thermoplastic resin sheet or film | |
US3353754A (en) | Process and apparatus for cutting synthetic polymer sheets into chips | |
GB1372782A (en) | Method and apparatus for slitting a film | |
GB1526398A (en) | Manufacture of extruded products | |
EP0004092B1 (en) | A method and means for continuously thermal forming oriented thermoplastic molded articles | |
GB1219292A (en) | Curable granules of a homo- or copolymer of an olefinic hydrocarbon | |
US5059111A (en) | Apparatus for processing unvulcanized rubber | |
GB1371334A (en) | Film stretching method and apparatus | |
GB1260836A (en) | The manufacture of filaments, fibres and yarns by fibrillation of synthetic organic thermoplastic polymers, and the resulting products | |
GB1283165A (en) | Method and apparatus for pelletizing synthetic resinous material | |
GB1412116A (en) | Process and apparatus for the production of flat polymeric structures | |
GB1073741A (en) | Process and apparatus for producing multifilament material and products produced therefrom | |
GB1328090A (en) | Filler-containing film fibres and process for the manufacture thereof | |
US3482277A (en) | Feeding and guiding device for plastic strips and cables | |
CN216229639U (en) | Cutting device for plastic product stretcher | |
GB1465138A (en) | Method of and apparatus for plasticising material such as rubber synthetic plastics and other plasticisable compositions | |
US3138824A (en) | Film stretching apparatus | |
GB1066379A (en) | Method and apparatus for reprocessing plastic waste material | |
GB1289161A (en) | ||
US4316570A (en) | Apparatus for feeding strips of rubber compositions simultaneously into an extruder | |
US3659765A (en) | Method for fibrillating a transversely oriented plastic material | |
IE36992B1 (en) | Processes and means for producing or treating films of plastics material |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PLNP | Patent lapsed through nonpayment of renewal fees |