IT1064130B - Procedimento per l ottenimento di un foglio di polipropilene alleggerito e foglio ottenuto mediante tale procedimento - Google Patents

Procedimento per l ottenimento di un foglio di polipropilene alleggerito e foglio ottenuto mediante tale procedimento

Info

Publication number
IT1064130B
IT1064130B IT50483/76A IT5048376A IT1064130B IT 1064130 B IT1064130 B IT 1064130B IT 50483/76 A IT50483/76 A IT 50483/76A IT 5048376 A IT5048376 A IT 5048376A IT 1064130 B IT1064130 B IT 1064130B
Authority
IT
Italy
Prior art keywords
procedure
sheet
lightened
obtaining
polypropylene
Prior art date
Application number
IT50483/76A
Other languages
English (en)
Italian (it)
Original Assignee
Charbonnages Ste Chimique
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 FR7523222A external-priority patent/FR2318725A1/fr
Priority claimed from FR7610740A external-priority patent/FR2348039A2/fr
Application filed by Charbonnages Ste Chimique filed Critical Charbonnages Ste Chimique
Application granted granted Critical
Publication of IT1064130B publication Critical patent/IT1064130B/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
    • B29C44/56—After-treatment of articles, e.g. for altering the shape
    • 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
    • B29C44/505—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 extruding the compound through a flat die
    • 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
    • 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
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0012—Combinations of extrusion moulding with other shaping operations combined with shaping by internal pressure generated in the material, e.g. foaming
    • 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
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0017—Combinations of extrusion moulding with other shaping operations combined with blow-moulding or thermoforming
    • 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
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • 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
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; 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
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/10—Polymers of propylene
    • B29K2023/12—PP, i.e. polypropylene
    • 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
    • B29K2105/04—Condition, form or state of moulded material or of the material to be shaped cellular or porous
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2007/00—Flat articles, e.g. films or sheets
    • B29L2007/008—Wide strips, e.g. films, webs
IT50483/76A 1975-07-24 1976-07-16 Procedimento per l ottenimento di un foglio di polipropilene alleggerito e foglio ottenuto mediante tale procedimento IT1064130B (it)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7523222A FR2318725A1 (fr) 1975-07-24 1975-07-24 Procede d'obtention d'une feuille en polypropylene allege et feuille obtenue par ce procede
FR7610740A FR2348039A2 (fr) 1976-04-12 1976-04-12 Procede d'obtention d'une feuille en polypropylene allege et feuille obtenue par ce procede

Publications (1)

Publication Number Publication Date
IT1064130B true IT1064130B (it) 1985-02-18

Family

ID=26218997

Family Applications (1)

Application Number Title Priority Date Filing Date
IT50483/76A IT1064130B (it) 1975-07-24 1976-07-16 Procedimento per l ottenimento di un foglio di polipropilene alleggerito e foglio ottenuto mediante tale procedimento

Country Status (10)

Country Link
BR (1) BR7604748A (enrdf_load_stackoverflow)
DE (1) DE2633307A1 (enrdf_load_stackoverflow)
DK (1) DK335376A (enrdf_load_stackoverflow)
ES (1) ES450072A1 (enrdf_load_stackoverflow)
FI (1) FI762121A7 (enrdf_load_stackoverflow)
IT (1) IT1064130B (enrdf_load_stackoverflow)
LU (1) LU75415A1 (enrdf_load_stackoverflow)
NL (1) NL7608100A (enrdf_load_stackoverflow)
NO (1) NO762577L (enrdf_load_stackoverflow)
PT (1) PT65356B (enrdf_load_stackoverflow)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0725916B2 (ja) * 1987-04-13 1995-03-22 三菱油化株式会社 ポリプロピレン発泡体の製造方法
US5116881A (en) * 1990-03-14 1992-05-26 James River Corporation Of Virginia Polypropylene foam sheets

Also Published As

Publication number Publication date
BR7604748A (pt) 1977-08-02
LU75415A1 (enrdf_load_stackoverflow) 1977-04-06
NO762577L (enrdf_load_stackoverflow) 1977-01-25
DK335376A (da) 1977-01-25
FI762121A7 (enrdf_load_stackoverflow) 1977-01-25
PT65356B (fr) 1978-01-09
ES450072A1 (es) 1977-07-16
NL7608100A (nl) 1977-01-26
DE2633307A1 (de) 1977-02-10
PT65356A (fr) 1976-08-01

Similar Documents

Publication Publication Date Title
RO81244A (ro) Procedeu pentru obtinerea dimetileterului
AT358184B (de) Diagnostische einrichtung
SE7603754L (sv) Tetningslist
MX5459E (es) Procedimiento de obtencion de una glicoproteina
IT1099566B (it) Polipropilene elastomerico
SE7703771L (sv) Tetningsmaterial
SE7706840L (sv) Separationsforfarande
BE866103A (fr) Pneumatique
TR19495A (tr) Huecre kueltuerue yapilmasina mahsus usul
RO67250A (ro) Procedeu de obtinere a unor copolimeri pe baza de nitrilacrilic
RO73519A (ro) Procedeu de obtinere a unor corticoide
BE863023A (fr) Pneumatique
IT1064130B (it) Procedimento per l ottenimento di un foglio di polipropilene alleggerito e foglio ottenuto mediante tale procedimento
RO74196A (ro) Procedeu de obtinere a izobutilenei
SE7701143L (sv) Polumerisatinosforfarande
DK146556C (da) Aerosolbeholder
IT1091125B (it) Procedimento per depurare epsilon-caprolattame
BR7802908A (pt) Pneumatico
RO69985A (ro) Procedeu de obtinere a antibioticului a-30912
BE853036A (fr) Piege a taupes
FI780030A7 (fi) Foerfarande foer separering av polyvinylalkohol ur vattenhaltiga loesningar
RO67388A2 (ro) Procedeu de obtinere a streptomicinei
IT1075949B (it) Procedimento di preparazione di dialdeidi sature e insature
RO66663A2 (ro) Procedeu de obtinere a bis-tioureidobenzenilor
RO67451A2 (ro) Procedeu de obtinere a 2-nitrofenol-4-sulfonamidelor