GB851874A - Improvements in or relating to the production of polymeric linear terephthalate ester films - Google Patents

Improvements in or relating to the production of polymeric linear terephthalate ester films

Info

Publication number
GB851874A
GB851874A GB39728/57A GB3972857A GB851874A GB 851874 A GB851874 A GB 851874A GB 39728/57 A GB39728/57 A GB 39728/57A GB 3972857 A GB3972857 A GB 3972857A GB 851874 A GB851874 A GB 851874A
Authority
GB
United Kingdom
Prior art keywords
film
ester
stretch
stretched
terephthalic acid
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
GB39728/57A
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.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and 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 EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Publication of GB851874A publication Critical patent/GB851874A/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
    • B29C55/00—Shaping by stretching, e.g. drawing through a die; 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
    • B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
    • B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
    • B29C55/10—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial
    • B29C55/12—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial
    • B29C55/14—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial successively
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/73—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer
    • G11B5/739—Magnetic recording media substrates
    • G11B5/73923—Organic polymer substrates
    • G11B5/73927—Polyester substrates, e.g. polyethylene terephthalate
    • 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
    • B29C71/00—After-treatment of articles without altering their shape; 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
    • B29K2067/00—Use of polyesters or derivatives thereof, as moulding material

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)

Abstract

The physical properties of linear terephthalate ester film are improved by stretching the substantially amorphous film at a temperature of 80-120 DEG C. from 1,5-3,0 times the unstretched dimension in one direction and from 3,7-5,0 times in the direction transverse to that of the first stretch, and heat-setting the stretched film at a temperature of 150-200 DEG C. under tension. After the first stretch the film may be restrained from shrinking in this direction while being stretched transversely, or alternatively the film may be stretched more than is required in the first stretch and allowed to shrink to within the specified limits during the transverse stretch. Specified linear terephthalate esters from which the films may be made are those derived by reacting a glycol of formula HO(CH2)nOH, where there is an integer of 2-10, with terephthalic acid or an ester-forming derivative thereof or a low molecular weight alkyl ester thereof, e g the dimethyl or diethyl ester, with or without up to 20% by weight (based on the weight of terephthalic acid or derivative thereof) of a second acid or ester thereof, said second acid being isophthalic, diphenic sebacic, hexahydroterephthalic, adipic, azelaic, naphthalic, or 2 : 5 dimethyl terephthalic acid or bis-p-carboxyphenoxy ethane Examples of the treatment of polyethylene terephthalate film are given. Specifications 743,503 and 851,875 are referred to.
GB39728/57A 1956-12-20 1957-12-27 Improvements in or relating to the production of polymeric linear terephthalate ester films Expired GB851874A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US851874XA 1956-12-20 1956-12-20
DEP0022855 1959-05-27

Publications (1)

Publication Number Publication Date
GB851874A true GB851874A (en) 1960-10-19

Family

ID=25989891

Family Applications (1)

Application Number Title Priority Date Filing Date
GB39728/57A Expired GB851874A (en) 1956-12-20 1957-12-27 Improvements in or relating to the production of polymeric linear terephthalate ester films

Country Status (3)

Country Link
DE (2) DE1239840B (en)
FR (1) FR1188651A (en)
GB (1) GB851874A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4153667A (en) 1976-07-30 1979-05-08 Owens-Illinois, Inc. Method of forming articles from thermoplastic materials
DE2926044A1 (en) 1979-06-28 1981-01-08 Owens Illinois Inc Blow moulding PET containers with configured surfaces - by using a blank with a configured surface the configuration of which is retained during the blowing
DE2953772A1 (en) * 1979-06-28 1982-06-03

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1979762A (en) * 1930-02-12 1934-11-06 Fiberloid Corp Method of finishing sheet pyroxylin
NL37479C (en) * 1932-10-24 1900-01-01
DE673607C (en) * 1933-03-15 1939-03-25 I G Farbenindustrie Akt Ges Process for the production of foils
DE700944C (en) * 1933-11-19 1941-01-08 I G Farbenindustrie Akt Ges Process for the production of films, tapes or the like.
CH260375A (en) * 1943-08-17 1949-03-15 Cellulose Sidac Societe Anonym A method and apparatus for producing a continuous sheet of an organic polymer whose molecules are oriented along two axes.
US2461975A (en) * 1945-10-20 1949-02-15 Visking Corp Method of making flattened thermoplastic tubing of predetermined desired characteristics
DE830413C (en) * 1949-11-01 1952-02-04 Kalle & Co Ag Device for the continuous stretching of plastic films in the transverse direction of the web
US2641022A (en) * 1950-02-21 1953-06-09 Extruders Inc Method of manufacturing plastic film
US2627088A (en) * 1950-03-22 1953-02-03 Du Pont Preparation of oriented coated films
CH290384A (en) * 1950-06-03 1953-04-30 Cellulose Sidac Societe Anonym Process for the production of a continuous film of organic plastic material by extrusion and apparatus for carrying out the process.
BE516069A (en) * 1950-12-22 1900-01-01
GB753603A (en) * 1953-12-31 1956-07-25 Ici Ltd Improvements in and relating to the manufacture of films
FR1122488A (en) * 1954-04-09 1956-09-07 Kalle & Co Ag Method of stretching strips of thermoplastic sheets, in the transverse direction

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4153667A (en) 1976-07-30 1979-05-08 Owens-Illinois, Inc. Method of forming articles from thermoplastic materials
DE2926044A1 (en) 1979-06-28 1981-01-08 Owens Illinois Inc Blow moulding PET containers with configured surfaces - by using a blank with a configured surface the configuration of which is retained during the blowing
DE2953772A1 (en) * 1979-06-28 1982-06-03

Also Published As

Publication number Publication date
DE1239840B (en) 1967-05-03
DE1404480A1 (en) 1968-11-28
FR1188651A (en) 1959-09-24

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