GB1250768A - - Google Patents

Info

Publication number
GB1250768A
GB1250768A GB4754868A GB1250768DA GB1250768A GB 1250768 A GB1250768 A GB 1250768A GB 4754868 A GB4754868 A GB 4754868A GB 1250768D A GB1250768D A GB 1250768DA GB 1250768 A GB1250768 A GB 1250768A
Authority
GB
United Kingdom
Prior art keywords
mould
nozzles
heating medium
cavity
closed
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
GB4754868A
Other languages
English (en)
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 filed Critical
Publication of GB1250768A publication Critical patent/GB1250768A/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
    • B29C44/38—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length
    • B29C44/44—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length in solid form
    • B29C44/445—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length in solid form in the form of expandable granules, particles or beads
    • 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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/02—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means
    • B29C33/04—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means using liquids, gas or steam
    • 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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
    • 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
    • B29C44/3415—Heating or cooling
    • B29C44/3426—Heating by introducing steam in the mould

Landscapes

  • Moulds For Moulding Plastics Or The Like (AREA)
  • Molding Of Porous Articles (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
GB4754868A 1968-08-06 1968-11-08 Expired GB1250768A (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DD13395368 1968-08-06

Publications (1)

Publication Number Publication Date
GB1250768A true GB1250768A (enrdf_load_stackoverflow) 1971-10-20

Family

ID=5480250

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4754868A Expired GB1250768A (enrdf_load_stackoverflow) 1968-08-06 1968-11-08

Country Status (9)

Country Link
AT (1) AT309796B (enrdf_load_stackoverflow)
CH (1) CH510509A (enrdf_load_stackoverflow)
CS (1) CS163194B2 (enrdf_load_stackoverflow)
DE (1) DE1779662C3 (enrdf_load_stackoverflow)
FR (1) FR1593241A (enrdf_load_stackoverflow)
GB (1) GB1250768A (enrdf_load_stackoverflow)
HU (1) HU163177B (enrdf_load_stackoverflow)
RO (1) RO56839A2 (enrdf_load_stackoverflow)
YU (1) YU32866B (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2233275A (en) * 1989-05-25 1991-01-09 Barnett Int Ltd Uniformly curing moulded plastics by varying the heat input in proportion to the cavity size

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2233275A (en) * 1989-05-25 1991-01-09 Barnett Int Ltd Uniformly curing moulded plastics by varying the heat input in proportion to the cavity size

Also Published As

Publication number Publication date
DE1779662C3 (de) 1973-09-20
CH510509A (de) 1971-07-31
FR1593241A (enrdf_load_stackoverflow) 1970-05-25
CS163194B2 (enrdf_load_stackoverflow) 1975-08-29
AT309796B (de) 1973-07-15
DE1779662A1 (de) 1972-03-23
YU202069A (en) 1975-04-30
YU32866B (en) 1975-10-31
HU163177B (enrdf_load_stackoverflow) 1973-06-28
RO56839A2 (ro) 1974-03-13
DE1779662B2 (de) 1973-03-01

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees