IT1021701B - Procedimento e dispositivo per la produzione di oggetti in plastica schiumosa a celle chiuse - Google Patents

Procedimento e dispositivo per la produzione di oggetti in plastica schiumosa a celle chiuse

Info

Publication number
IT1021701B
IT1021701B IT53368/74A IT5336874A IT1021701B IT 1021701 B IT1021701 B IT 1021701B IT 53368/74 A IT53368/74 A IT 53368/74A IT 5336874 A IT5336874 A IT 5336874A IT 1021701 B IT1021701 B IT 1021701B
Authority
IT
Italy
Prior art keywords
closed
production
foam plastic
celled foam
plastic objects
Prior art date
Application number
IT53368/74A
Other languages
English (en)
Inventor
H Lucas
F Alfter
H Breitscheidel
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
Application granted granted Critical
Publication of IT1021701B publication Critical patent/IT1021701B/it

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
IT53368/74A 1973-10-08 1974-10-04 Procedimento e dispositivo per la produzione di oggetti in plastica schiumosa a celle chiuse IT1021701B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19732350355 DE2350355A1 (de) 1973-10-08 1973-10-08 Verfahren und vorrichtung zum herstellen von formteilen aus thermoplastischen, geschlossenzelligen schaumstoffen nach dem vakuumformverfahren

Publications (1)

Publication Number Publication Date
IT1021701B true IT1021701B (it) 1978-02-20

Family

ID=5894767

Family Applications (1)

Application Number Title Priority Date Filing Date
IT53368/74A IT1021701B (it) 1973-10-08 1974-10-04 Procedimento e dispositivo per la produzione di oggetti in plastica schiumosa a celle chiuse

Country Status (8)

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

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS629069Y2 (it) * 1980-09-05 1987-03-03
DE3922545A1 (de) * 1989-07-08 1991-01-17 Hoechst Ag Verfahren zur herstellung von kunststoff-hohlkoerpern mit geschaeumten waenden
DE4206617A1 (de) * 1992-03-03 1993-09-09 Happich Gmbh Gebr Verfahren zum herstellen einer zumindest bereichsweise strukturierten oberflaeche an einem aus expandierten polypropylen-partikeln gefertigten schaumstoff-formkoerper
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 (de) 1975-04-17
SE7412599L (sv) 1975-04-09
JPS5065573A (it) 1975-06-03
FR2246372A1 (it) 1975-05-02
GB1478376A (en) 1977-06-29
BE820565A (fr) 1975-01-16
NL7413228A (nl) 1975-04-10

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