GB880055A - Process for the production of beads or bead-like granules from molten or heat plastified thermo-plastic polymeric material and apparatus therefor - Google Patents

Process for the production of beads or bead-like granules from molten or heat plastified thermo-plastic polymeric material and apparatus therefor

Info

Publication number
GB880055A
GB880055A GB1031/60A GB103160A GB880055A GB 880055 A GB880055 A GB 880055A GB 1031/60 A GB1031/60 A GB 1031/60A GB 103160 A GB103160 A GB 103160A GB 880055 A GB880055 A GB 880055A
Authority
GB
United Kingdom
Prior art keywords
outlets
grooves
slots
inert material
inlet
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
Application number
GB1031/60A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dow Chemical Co
Original Assignee
Dow Chemical Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from US787072A external-priority patent/US3003193A/en
Priority claimed from US787073A external-priority patent/US2958099A/en
Application filed by Dow Chemical Co filed Critical Dow Chemical Co
Publication of GB880055A publication Critical patent/GB880055A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/36—Feeding the material to be shaped
    • B29C44/46—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length
    • B29C44/461—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length dispensing apparatus, e.g. dispensing foaming resin over the whole width of the moving surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
    • B01J2/20—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by expressing the material, e.g. through sieves and fragmenting the extruded length
    • 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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/36—Feeding the material to be shaped
    • B29C44/46—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length
    • B29C44/50—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length using pressure difference, e.g. by extrusion or by spraying

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Abstract

880,055. Pelletting plastic materials. DOW CHEMICAL CO. Jan. 12, 1960 [Jan. 15, 1959(2)], No. 1031/60. Class 87(2). A process of making pellets from plastic material comprises extruding the heat plastified material into a confined space which is open on opposite sides and ejecting the material from the space, with simultaneous coding, by introducing a compressed inert material into the space. Details of various solid and cellular composition are given and the compressed inert material may be gaseous or liquid, e.g. water, steam, nitrogen, propane or methyl alcohol. In Fig. 1 a screw extrudes plastic material through peripheral slots 27 in a screw extension 13 that is forced by the pressure of the material against a die member 14. The bearing face of the extension 13 has an annular groove 31 and radial grooves 30. The die member 14 has stepped outlets 24 and an inlet 23, for the inert material, which connects with the grooves 31, 30. As the screw and extension 13 rotate the material passes through the slots 27 in to the outlets 24 until the slots 27 and outlets 24 are out of register, continued rotation of the extension 13 brings the grooves 30 in register with the outlets 24 so that the inert material passes through the inlet 23, grooves 31 and 30 and ejects the plastic material from the outlets 24. The grooves 27 and outlets 24 may have different circumferential pitches to avoid pulsation of the plastic material and inert material. In Fig. 8, a discharge member 36 with outlets 37 rotates around a stationary die member 34 having longitudinal slots 35 and surface grooves 38 leading to groover 39 in the discharge member 36 and a inert material inlet 40. In operation the material is extruded through the slots 35 into the outlets 37 whose rotation brings them over the grooves 38 so that the inert material from the inlet 40 grooves 39 and 38 may eject and cool the pellets. The die has a cleaning outlet 43 uncovered by a plug 42 and the discharge member is rotated by a sprocket 52. The outlets 24, 37 may be of any cross-sectional shape. U.S.A. Specification 2,453,088 is referred to.
GB1031/60A 1959-01-15 1960-01-12 Process for the production of beads or bead-like granules from molten or heat plastified thermo-plastic polymeric material and apparatus therefor Expired GB880055A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US787072A US3003193A (en) 1959-01-15 1959-01-15 Method for making beads of thermoplastic polymers
US787073A US2958099A (en) 1959-01-15 1959-01-15 Extrusion die for plastic extruders

Publications (1)

Publication Number Publication Date
GB880055A true GB880055A (en) 1961-10-18

Family

ID=27120612

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1031/60A Expired GB880055A (en) 1959-01-15 1960-01-12 Process for the production of beads or bead-like granules from molten or heat plastified thermo-plastic polymeric material and apparatus therefor

Country Status (4)

Country Link
DE (1) DE1404966B2 (en)
FR (1) FR1247574A (en)
GB (1) GB880055A (en)
LU (1) LU38134A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009061621A1 (en) 2007-11-08 2009-05-14 Exxonmobil Chemical Patents Inc. Method and apparatus for pelletizing a polymer feed
CN106268510A (en) * 2016-09-18 2017-01-04 湖南万容科技股份有限公司 A kind of pyrolysis oil bottoms processing system
CN112092277A (en) * 2020-08-05 2020-12-18 江苏佳境生态工程技术有限公司 Process for manufacturing permeable plastic road surface layer particles

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2210727A2 (en) * 2002-10-04 2010-07-28 Eastman Chemical Company Method for granulating plastics
EP1608696B1 (en) 2003-10-17 2006-06-21 BKG Bruckmann & Kreyenborg Granuliertechnik GmbH Method for the thermal treatment of polyester pellets

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009061621A1 (en) 2007-11-08 2009-05-14 Exxonmobil Chemical Patents Inc. Method and apparatus for pelletizing a polymer feed
CN106268510A (en) * 2016-09-18 2017-01-04 湖南万容科技股份有限公司 A kind of pyrolysis oil bottoms processing system
CN112092277A (en) * 2020-08-05 2020-12-18 江苏佳境生态工程技术有限公司 Process for manufacturing permeable plastic road surface layer particles
CN112092277B (en) * 2020-08-05 2022-02-25 江苏佳境生态工程技术有限公司 Process for manufacturing permeable plastic road surface layer particles

Also Published As

Publication number Publication date
DE1404966B2 (en) 1970-02-19
FR1247574A (en) 1960-12-02
DE1404966A1 (en) 1968-10-03
LU38134A1 (en) 1900-01-01

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