FR2097128A1 - High molecular polymer sheet - by rolling softened polymer to avoid melt fracture problems - Google Patents

High molecular polymer sheet - by rolling softened polymer to avoid melt fracture problems

Info

Publication number
FR2097128A1
FR2097128A1 FR7123574A FR7123574A FR2097128A1 FR 2097128 A1 FR2097128 A1 FR 2097128A1 FR 7123574 A FR7123574 A FR 7123574A FR 7123574 A FR7123574 A FR 7123574A FR 2097128 A1 FR2097128 A1 FR 2097128A1
Authority
FR
France
Prior art keywords
polymer
sheet
rolling
high molecular
melt fracture
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.)
Granted
Application number
FR7123574A
Other languages
French (fr)
Other versions
FR2097128B1 (en
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.)
Eastman Kodak Co
Original Assignee
Eastman Kodak 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.)
Filing date
Publication date
Application filed by Eastman Kodak Co filed Critical Eastman Kodak Co
Publication of FR2097128A1 publication Critical patent/FR2097128A1/en
Application granted granted Critical
Publication of FR2097128B1 publication Critical patent/FR2097128B1/fr
Granted 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/22—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length
    • B29C43/24—Calendering

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Abstract

Sheet is produced continuously from polymer with high melt viscosity at temps. below its decompsn. point by (a) softening polymer by heating; (b) passing into nip between 2 rolls rotating at same speed and heated at least to tack temp. of polymer, without marked dynamic pressure or shear; (c) rolling to sheet between these rolls without stretching under pressure, and (d) cooling. Technique can be used to produce sheet from a variety of high mol. polyolefins and their halogenated derivs., acrylics, polyesters, poly(di)olefin oxides, polyamides and their co- or ter-polymers.
FR7123574A 1970-07-02 1971-06-29 High molecular polymer sheet - by rolling softened polymer to avoid melt fracture problems Granted FR2097128A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US5209670A 1970-07-02 1970-07-02

Publications (2)

Publication Number Publication Date
FR2097128A1 true FR2097128A1 (en) 1972-03-03
FR2097128B1 FR2097128B1 (en) 1975-02-07

Family

ID=21975446

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7123574A Granted FR2097128A1 (en) 1970-07-02 1971-06-29 High molecular polymer sheet - by rolling softened polymer to avoid melt fracture problems

Country Status (2)

Country Link
DE (1) DE2132647A1 (en)
FR (1) FR2097128A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE870900C (en) * 1941-03-23 1953-03-19 Basf Ag Process for the production of rolled films from polymers of vinyl chloride
GB1058007A (en) * 1965-02-17 1967-02-08 Shell Int Research Polyolefin sheet material and the manufacture thereof
FR2054186A5 (en) * 1969-07-07 1971-04-16 Union Carbide Corp

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE870900C (en) * 1941-03-23 1953-03-19 Basf Ag Process for the production of rolled films from polymers of vinyl chloride
GB1058007A (en) * 1965-02-17 1967-02-08 Shell Int Research Polyolefin sheet material and the manufacture thereof
FR2054186A5 (en) * 1969-07-07 1971-04-16 Union Carbide Corp

Also Published As

Publication number Publication date
DE2132647A1 (en) 1972-01-05
FR2097128B1 (en) 1975-02-07

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Legal Events

Date Code Title Description
ST Notification of lapse