CA1070070A - Methode et appareil d'extrusion de matieres thermoplastiques en presence d'agents moussants - Google Patents

Methode et appareil d'extrusion de matieres thermoplastiques en presence d'agents moussants

Info

Publication number: CA1070070A
Authority: CA; Canada
Prior art keywords: channel; extrusion; composition; foam; shaping
Prior art date: 1976-03-09
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

CA247,499A

Other languages

English (en)

Inventor

Guy A. Hoenke

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.)

Dow Chemical Co

Original Assignee

Dow Chemical Co

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.)

1976-03-09

Filing date

1976-03-09

Publication date

1980-01-22

1976-03-09 Application filed by Dow Chemical Co filed Critical Dow Chemical Co

1976-03-09 Priority to CA247,499A priority Critical patent/CA1070070A/fr

1980-01-22 Application granted granted Critical

1980-01-22 Publication of CA1070070A publication Critical patent/CA1070070A/fr

Status Expired legal-status Critical Current

Links

238000001125 extrusion Methods 0.000 title claims abstract description 25
238000000034 method Methods 0.000 title claims description 8
239000012815 thermoplastic material Substances 0.000 title 1
239000006260 foam Substances 0.000 claims abstract description 31
239000000203 mixture Substances 0.000 claims description 21
238000007493 shaping process Methods 0.000 claims description 15
229920001169 thermoplastic Polymers 0.000 claims description 5
239000004416 thermosoftening plastic Substances 0.000 claims description 5
238000002360 preparation method Methods 0.000 claims description 4
208000036366 Sensation of pressure Diseases 0.000 claims description 2
238000005187 foaming Methods 0.000 abstract description 2
239000000463 material Substances 0.000 abstract description 2
239000002984 plastic foam Substances 0.000 abstract description 2
239000004033 plastic Substances 0.000 description 6
229920003023 plastic Polymers 0.000 description 6
239000000047 product Substances 0.000 description 6
238000004891 communication Methods 0.000 description 5
230000006854 communication Effects 0.000 description 5
230000001105 regulatory effect Effects 0.000 description 3
235000012438 extruded product Nutrition 0.000 description 2
238000009413 insulation Methods 0.000 description 2
-1 polyethylene Polymers 0.000 description 2
239000004604 Blowing Agent Substances 0.000 description 1
239000004698 Polyethylene Substances 0.000 description 1
239000004743 Polypropylene Substances 0.000 description 1
239000004793 Polystyrene Substances 0.000 description 1
241000153282 Theope Species 0.000 description 1
239000007795 chemical reaction product Substances 0.000 description 1
230000003111 delayed effect Effects 0.000 description 1
239000006261 foam material Substances 0.000 description 1
150000002500 ions Chemical class 0.000 description 1
230000000704 physical effect Effects 0.000 description 1
229920000573 polyethylene Polymers 0.000 description 1
229920001155 polypropylene Polymers 0.000 description 1
229920002223 polystyrene Polymers 0.000 description 1
229920000915 polyvinyl chloride Polymers 0.000 description 1
239000004800 polyvinyl chloride Substances 0.000 description 1
229920005992 thermoplastic resin Polymers 0.000 description 1
238000009966 trimming Methods 0.000 description 1
239000002699 waste material Substances 0.000 description 1

Landscapes

Extrusion Moulding Of Plastics Or The Like (AREA)

CA247,499A 1976-03-09 1976-03-09 Methode et appareil d'extrusion de matieres thermoplastiques en presence d'agents moussants Expired CA1070070A (fr)

Priority Applications (1)

Application Number	Priority Date	Filing Date	Title
CA247,499A CA1070070A (fr)	1976-03-09	1976-03-09	Methode et appareil d'extrusion de matieres thermoplastiques en presence d'agents moussants

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
CA247,499A CA1070070A (fr)	1976-03-09	1976-03-09	Methode et appareil d'extrusion de matieres thermoplastiques en presence d'agents moussants

Publications (1)

Publication Number	Publication Date
CA1070070A true CA1070070A (fr)	1980-01-22

Family

ID=4105430

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA247,499A Expired CA1070070A (fr)	1976-03-09	1976-03-09	Methode et appareil d'extrusion de matieres thermoplastiques en presence d'agents moussants

Country Status (1)

Country	Link
CA (1)	CA1070070A (fr)

1976
- 1976-03-09 CA CA247,499A patent/CA1070070A/fr not_active Expired

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Legal Events

Date	Code	Title	Description
1997-01-22	MKEX	Expiry