GB845059A - Process and apparatus for manufacturing hollow articles of a thermoplastic material - Google Patents

Process and apparatus for manufacturing hollow articles of a thermoplastic material

Info

Publication number
GB845059A
GB845059A GB25692/58A GB2569258A GB845059A GB 845059 A GB845059 A GB 845059A GB 25692/58 A GB25692/58 A GB 25692/58A GB 2569258 A GB2569258 A GB 2569258A GB 845059 A GB845059 A GB 845059A
Authority
GB
United Kingdom
Prior art keywords
mould
tube
ram
convolutions
discharge
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
GB25692/58A
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.)
Individual
Original Assignee
Individual
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
Application filed by Individual filed Critical Individual
Priority to GB25692/58A priority Critical patent/GB845059A/en
Priority to DE19591164648D priority patent/DE1164648B/en
Publication of GB845059A publication Critical patent/GB845059A/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
    • B29C31/00—Handling, e.g. feeding of the material to be shaped, storage of plastics material before moulding; Automation, i.e. automated handling lines in plastics processing plants, e.g. using manipulators or robots
    • B29C31/04—Feeding of the material to be moulded, e.g. into a mould cavity
    • 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
    • B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
    • B29C41/02—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
    • B29C41/04—Rotational or centrifugal casting, i.e. coating the inside of a mould by rotating the mould
    • B29C41/042—Rotational or centrifugal casting, i.e. coating the inside of a mould by rotating the mould by rotating a mould around its axis of symmetry
    • 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
    • B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
    • B29C41/02—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
    • B29C41/20—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. moulding inserts or for coating articles
    • 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
    • B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
    • B29C41/34—Component parts, details or accessories; Auxiliary operations
    • B29C41/36—Feeding the material on to the mould, core or other substrate
    • 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
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Robotics (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

845,059. Extrusion-centrifugal moulding machines. PATELLA, L. Aug. 11, 1958, No. 26692/58. Class 87(2). A process of moulding hollow articles of a thermoplastic material comprises extruding softened material 50 on to the inner surface of a cylindrical mould 32 so that the material lies in helical convolutions 51 whilst rotating the mould at a relatively low speed and heating it during the laying-down step to maintain the material in its softened condition, centrifuging the material in the mould at a high speed so that the convolutions 51 fuse together and then cooling the material to form a unitary body. Thermoplastic end pieces 33, 34 may be placed in the mould 32 so they fuse to the convolutions and the convolutions may be laid in more than one layer and of different materials. An axially movable tube 17 has a discharge orifice or orifices 20 through which plastic material is forced by a ram 23 into a mould 32 rotated on rollers 31. Two such tubes may discharge into the mould, one from either end. The tube 17 and ram 23 are mounted on a rotatable bracket 19 having an extrusion barrel 11 and distribution chamber 14. In operation the tube 17 is withdrawn until the orifice 20 is within the chamber 14 whereupon the pressure of the plastic material within the chamber 14 forces back the ram 23 and fills the tube 17, the volume contained by the tube 17 being adjustable by a ram stop 24. The tube 17 and ram 23 are then advanced in the mould 32 and differential withdrawal of the tube and ram extrudes the helical convolution 51. Rotation of the bracket 19 enables the tube 17 to discharge into a second mould whilst the material in the first mould is centrifuging.
GB25692/58A 1958-08-11 1958-08-11 Process and apparatus for manufacturing hollow articles of a thermoplastic material Expired GB845059A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB25692/58A GB845059A (en) 1958-08-11 1958-08-11 Process and apparatus for manufacturing hollow articles of a thermoplastic material
DE19591164648D DE1164648B (en) 1958-08-11 1959-08-11 Method and device for the production of hollow objects from thermoplastic material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB25692/58A GB845059A (en) 1958-08-11 1958-08-11 Process and apparatus for manufacturing hollow articles of a thermoplastic material

Publications (1)

Publication Number Publication Date
GB845059A true GB845059A (en) 1960-08-17

Family

ID=10231746

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25692/58A Expired GB845059A (en) 1958-08-11 1958-08-11 Process and apparatus for manufacturing hollow articles of a thermoplastic material

Country Status (2)

Country Link
DE (1) DE1164648B (en)
GB (1) GB845059A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3187381A (en) * 1961-04-28 1965-06-08 Injecticon International Inc Apparatus for molding hollow articles
US3217078A (en) * 1962-04-16 1965-11-09 C R Custom Plastics Corp Process for molding hollow articles from thermoplastic materials
US3301925A (en) * 1961-12-07 1967-01-31 Vasco Ind Corp Process and apparatus for molding hollow articles from synthetic thermoplastic materials
GB2156727A (en) * 1984-03-09 1985-10-16 Pemberton Sintermatic Method for the production of helical protein products

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023121583A1 (en) * 2021-12-25 2023-06-29 Fr Maki̇na Ve Mühendi̇sli̇k Anoni̇m Şi̇rketi̇ Pet preform injection system and production method

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2654124A (en) * 1948-03-25 1953-10-06 Purolator Products Inc Method and apparatus for manufacture of plastic edge type filters

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3187381A (en) * 1961-04-28 1965-06-08 Injecticon International Inc Apparatus for molding hollow articles
US3301925A (en) * 1961-12-07 1967-01-31 Vasco Ind Corp Process and apparatus for molding hollow articles from synthetic thermoplastic materials
US3217078A (en) * 1962-04-16 1965-11-09 C R Custom Plastics Corp Process for molding hollow articles from thermoplastic materials
GB2156727A (en) * 1984-03-09 1985-10-16 Pemberton Sintermatic Method for the production of helical protein products

Also Published As

Publication number Publication date
DE1164648B (en) 1964-03-05

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