GB1083665A - Biaxially oriented polyethylene terephthalate films - Google Patents
Biaxially oriented polyethylene terephthalate filmsInfo
- Publication number
- GB1083665A GB1083665A GB9501/65A GB950165A GB1083665A GB 1083665 A GB1083665 A GB 1083665A GB 9501/65 A GB9501/65 A GB 9501/65A GB 950165 A GB950165 A GB 950165A GB 1083665 A GB1083665 A GB 1083665A
- Authority
- GB
- United Kingdom
- Prior art keywords
- film
- temperature
- drawn
- machine direction
- rolls
- 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
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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Abstract
1,083,665. Biaxially orienting polyethylene terephthalate films. IMPERIAL CHEMICAL INDUSTRIES Ltd. Feb. 16, 1966 [March 5, 1965], No. 9501/65. Heading B5B. A process in which an amorphous polyethylene terephthalate film is drawn at a temperature above its second order transition point, first in its machine and then uniformly in the transverse direction is characterized in that the film is drawn in its machine direction to a draw ratio of from 3À75 : 1 to 4À75 : 1 the film being held for such drawing at a temperature so little above its second order transistion point and for so short a time that the density of the film after drawing in its machine direction does not exceed 1À365. The second order transition point of polyethylene terephthalates varies slightly, but is about 78‹ C. The transverse draw may be conducted at a temperature not greater than 130‹ C. and preferably not greater than 120‹ C. In the two examples the film is drawn in the machine direction at a draw ratio of 4À2 : 1 at 90‹ C. and the transverse drawing is conducted at 110‹ C. and 117‹ C. respectively to corresponding draw ratios 3À8 : 1 and 3À65 : 1. The film may be drawn in the machine direction by passing it between or round a pair or series of slow rolls heated to the desired drawing temperature and then between or round a pair or series of fast rolls at least the first of which is cooled, the two pairs or series of rolls being closely spaced so that the film is supported upon the rolls over most of the region in which it is subjected to tension. The film may be heated by means of radiant heat applied to as small a length of film, in the desired drawing region, as is consistent with the need to heat the film to the desired drawing temperature. The biaxially stretched film may be heat set at a temperature in the range 150-230‹ C.
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9501/65A GB1083665A (en) | 1965-03-05 | 1965-03-05 | Biaxially oriented polyethylene terephthalate films |
SE2736/66A SE303867B (en) | 1965-03-05 | 1966-03-02 | |
BE677403D BE677403A (en) | 1965-03-05 | 1966-03-04 | |
ES0323796A ES323796A1 (en) | 1965-03-05 | 1966-03-04 | Procedure to orient biaxily thermoplastic films. (Machine-translation by Google Translate, not legally binding) |
CH309966A CH440678A (en) | 1965-03-05 | 1966-03-04 | Process for stretching films made of polyethylene terephthalate |
NL6602835A NL6602835A (en) | 1965-03-05 | 1966-03-04 | |
DE19661629466 DE1629466B1 (en) | 1965-03-05 | 1966-03-04 | PROCESS FOR MANUFACTURING BIAXIALLY STRETCHED FILMS OF HIGH STRENGTH FROM POLYAETHYLENE TEREPTHALATE |
FR52098A FR1473405A (en) | 1965-03-05 | 1966-03-04 | Two-way oriented thermoplastic films |
LU50570A LU50570A1 (en) | 1965-03-05 | 1966-03-04 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9501/65A GB1083665A (en) | 1965-03-05 | 1965-03-05 | Biaxially oriented polyethylene terephthalate films |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1083665A true GB1083665A (en) | 1967-09-20 |
Family
ID=9873177
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9501/65A Expired GB1083665A (en) | 1965-03-05 | 1965-03-05 | Biaxially oriented polyethylene terephthalate films |
Country Status (9)
Country | Link |
---|---|
BE (1) | BE677403A (en) |
CH (1) | CH440678A (en) |
DE (1) | DE1629466B1 (en) |
ES (1) | ES323796A1 (en) |
FR (1) | FR1473405A (en) |
GB (1) | GB1083665A (en) |
LU (1) | LU50570A1 (en) |
NL (1) | NL6602835A (en) |
SE (1) | SE303867B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4944083A (en) * | 1972-07-19 | 1974-04-25 | ||
US4153667A (en) | 1976-07-30 | 1979-05-08 | Owens-Illinois, Inc. | Method of forming articles from thermoplastic materials |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6056101B2 (en) * | 1980-09-25 | 1985-12-09 | 東レ株式会社 | Manufacturing method of polyester film |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE573836A (en) * | 1957-12-12 |
-
1965
- 1965-03-05 GB GB9501/65A patent/GB1083665A/en not_active Expired
-
1966
- 1966-03-02 SE SE2736/66A patent/SE303867B/xx unknown
- 1966-03-04 CH CH309966A patent/CH440678A/en unknown
- 1966-03-04 FR FR52098A patent/FR1473405A/en not_active Expired
- 1966-03-04 ES ES0323796A patent/ES323796A1/en not_active Expired
- 1966-03-04 DE DE19661629466 patent/DE1629466B1/en active Pending
- 1966-03-04 BE BE677403D patent/BE677403A/xx unknown
- 1966-03-04 LU LU50570A patent/LU50570A1/xx unknown
- 1966-03-04 NL NL6602835A patent/NL6602835A/xx unknown
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4944083A (en) * | 1972-07-19 | 1974-04-25 | ||
JPS5635530B2 (en) * | 1972-07-19 | 1981-08-18 | ||
US4153667A (en) | 1976-07-30 | 1979-05-08 | Owens-Illinois, Inc. | Method of forming articles from thermoplastic materials |
Also Published As
Publication number | Publication date |
---|---|
ES323796A1 (en) | 1967-01-16 |
DE1629466B1 (en) | 1972-05-25 |
SE303867B (en) | 1968-09-09 |
CH440678A (en) | 1967-07-31 |
LU50570A1 (en) | 1966-05-04 |
BE677403A (en) | 1966-09-05 |
NL6602835A (en) | 1966-09-06 |
FR1473405A (en) | 1967-03-17 |
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