GB915805A - Improvements in the production of polymeric linear terephthalate ester films - Google Patents
Improvements in the production of polymeric linear terephthalate ester filmsInfo
- Publication number
- GB915805A GB915805A GB1681259A GB1681259A GB915805A GB 915805 A GB915805 A GB 915805A GB 1681259 A GB1681259 A GB 1681259A GB 1681259 A GB1681259 A GB 1681259A GB 915805 A GB915805 A GB 915805A
- Authority
- GB
- United Kingdom
- Prior art keywords
- film
- stretched
- production
- terephthalate ester
- polymeric linear
- 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
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
A substantially amorphous polymeric linear terephthalate ester film is biaxially stretched at 80 DEG -180 DEG C. to produce a film extended by 3-4 times the original dimension of the film in one direction and by above 4 and up to 6 times its original dimension in the direction at right angles thereto, the final difference between the extent of stretch in the two directions being at least 1,0, and heat-set at 150 DEG -240 DEG C. Polyethylene terephhalate film may be so treated. Preferably, the film is stretched by 3-4 times in one direction at 80 DEG -90 DEG C., and by above 4 and up to 6 times in the second direction at 120 DEG -180 DEG C. After being stretched in the first direction the film may be partially heat-set at 90 DEG -130 DEG C., before being stretched in the second direction. Desirably, the second direction is the longitudinal direction of the film. Films so treated exhibit the enhanced unidirectional properties of films treated according to the parent Specification. Specification 890,004 also is referred to.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1681259A GB915805A (en) | 1959-05-15 | 1959-05-15 | Improvements in the production of polymeric linear terephthalate ester films |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1681259A GB915805A (en) | 1959-05-15 | 1959-05-15 | Improvements in the production of polymeric linear terephthalate ester films |
Publications (1)
Publication Number | Publication Date |
---|---|
GB915805A true GB915805A (en) | 1963-01-16 |
Family
ID=10084112
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1681259A Expired GB915805A (en) | 1959-05-15 | 1959-05-15 | Improvements in the production of polymeric linear terephthalate ester films |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB915805A (en) |
Cited By (3)
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 |
-
1959
- 1959-05-15 GB GB1681259A patent/GB915805A/en not_active Expired
Cited By (3)
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 |
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