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GB1478376A - Vacuum moulding process and apparatus for use therein - Google Patents

Vacuum moulding process and apparatus for use therein

Info

Publication number
GB1478376A
GB1478376A GB4363574A GB4363574A GB1478376A GB 1478376 A GB1478376 A GB 1478376A GB 4363574 A GB4363574 A GB 4363574A GB 4363574 A GB4363574 A GB 4363574A GB 1478376 A GB1478376 A GB 1478376A
Authority
GB
United Kingdom
Prior art keywords
sheet
oct
copolymers
tool
moulding
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
GB4363574A
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.)
Dynamit Nobel AG
Original Assignee
Dynamit Nobel AG
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 Dynamit Nobel AG filed Critical Dynamit Nobel AG
Publication of GB1478376A publication Critical patent/GB1478376A/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
    • B29C44/3403—Foaming under special conditions, e.g. in sub-atmospheric pressure, in or on a liquid
    • 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
    • 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
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/10—Applying counter-pressure during expanding
    • 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
    • B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/25—Solid
    • B29K2105/253—Preform
    • B29K2105/256—Sheets, plates, blanks or films

Landscapes

  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Molding Of Porous Articles (AREA)

Abstract

1478376 Moulding foamed plastics DYNAMIT NOBEL AG 8 Oct 1974 [8 Oct 1973] 43635/74 Heading B5A An article of foamed thermoplastics material, e.g. packaging plates, Fig. 2, not shown, is produced by placing a heated sheet 1a in a moulding tool 1 so that it divides the cavity into two chambers, and then reducing the pressure on each side of the sheet so that it expands and conforms to the cavity wall profile. A stack of sheets, or strips, can be placed in the tool 1, and during expansion can be united together. The sheet can be formed from ethylene homopolymers and copolymers, vinyl chloride homopolymers or copolymers, or polypropylene.
GB4363574A 1973-10-08 1974-10-08 Vacuum moulding process and apparatus for use therein Expired GB1478376A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19732350355 DE2350355A1 (en) 1973-10-08 1973-10-08 METHOD AND DEVICE FOR MANUFACTURING MOLDED PARTS FROM THERMOPLASTIC, CLOSED-CELL FOAMS BY THE VACUUM FORMING PROCESS

Publications (1)

Publication Number Publication Date
GB1478376A true GB1478376A (en) 1977-06-29

Family

ID=5894767

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4363574A Expired GB1478376A (en) 1973-10-08 1974-10-08 Vacuum moulding process and apparatus for use therein

Country Status (8)

Country Link
JP (1) JPS5065573A (en)
BE (1) BE820565A (en)
DE (1) DE2350355A1 (en)
FR (1) FR2246372A1 (en)
GB (1) GB1478376A (en)
IT (1) IT1021701B (en)
NL (1) NL7413228A (en)
SE (1) SE7412599L (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019139832A1 (en) * 2018-01-15 2019-07-18 Amazon Technologies, Inc. Self-skinning cast components having cavities therein
US11052583B2 (en) 2018-01-15 2021-07-06 Amazon Technologies, Inc. Cast components having surfaces with resin coatings
US11731325B2 (en) 2018-01-15 2023-08-22 Amazon Technologies, Inc. Self-skinning cast components having negative space spars
US11858179B2 (en) 2018-01-15 2024-01-02 Amazon Technologies, Inc. Thermally expanding mandrel for cast components

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS629069Y2 (en) * 1980-09-05 1987-03-03
DE3922545A1 (en) * 1989-07-08 1991-01-17 Hoechst Ag METHOD FOR PRODUCING PLASTIC HOLLOW BODIES WITH MOLDED CHANGES
DE4206617A1 (en) * 1992-03-03 1993-09-09 Happich Gmbh Gebr METHOD FOR PRODUCING AN AT LEAST AREA STRUCTURED SURFACE ON A FOAM MOLDED BODY MADE FROM EXPANDED POLYPROPYLENE PARTICLES

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019139832A1 (en) * 2018-01-15 2019-07-18 Amazon Technologies, Inc. Self-skinning cast components having cavities therein
US11052583B2 (en) 2018-01-15 2021-07-06 Amazon Technologies, Inc. Cast components having surfaces with resin coatings
US11731325B2 (en) 2018-01-15 2023-08-22 Amazon Technologies, Inc. Self-skinning cast components having negative space spars
US11858179B2 (en) 2018-01-15 2024-01-02 Amazon Technologies, Inc. Thermally expanding mandrel for cast components

Also Published As

Publication number Publication date
DE2350355A1 (en) 1975-04-17
SE7412599L (en) 1975-04-09
IT1021701B (en) 1978-02-20
BE820565A (en) 1975-01-16
JPS5065573A (en) 1975-06-03
NL7413228A (en) 1975-04-10
FR2246372A1 (en) 1975-05-02

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee