GB1326262A - Biaxially stretched films of crystalline vinylidene chloride copolymer - Google Patents
Biaxially stretched films of crystalline vinylidene chloride copolymerInfo
- Publication number
- GB1326262A GB1326262A GB5037470A GB5037470A GB1326262A GB 1326262 A GB1326262 A GB 1326262A GB 5037470 A GB5037470 A GB 5037470A GB 5037470 A GB5037470 A GB 5037470A GB 1326262 A GB1326262 A GB 1326262A
- Authority
- GB
- United Kingdom
- Prior art keywords
- film
- chloride copolymer
- vinylidene chloride
- weight
- parts
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
Abstract
1326262 Vinylidene chloride copolymer films KUREHA KAGAKU KOGYO KK 23 Oct 1970 [24 Oct 1969] 50374/70 Heading B5B A process for the production of biaxially oriented tubular films of a crystalline vinylidene chloride copolymer comprises melt extruding a tubular film comprising 100 parts by weight of a vinylidene chloride/vinyl chloride copolymer, up to 20 parts by weight of a plasticizer (e.g. dibutyl sebacate) and up to 10 parts by weight stabilizer (e.g. epoxidized soybean oil), strongly heating the film to a temperature between 100‹ and 300‹ C. for 1 to 15 seconds, immediately biaxially stretching the film at the heated portion by inflation moulding under conditions which impart to the film a mimimum heat shrinkage stress of 100 (kg/cm<SP>2</SP>)<SP>2</SP> and maximum creep compliance of 60 x 10<SP>-4</SP> (%/kg/cm<SP>2</SP>)<SP>2</SP> and thereafter heat setting the thus oriented film, preferably at a temperature of 120‹-150‹ C. In an example the copolymer vinylidene used has a vinyl chloride copolymer ratio of 80 : 20 by weight.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8464769A JPS5019594B1 (en) | 1969-10-24 | 1969-10-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1326262A true GB1326262A (en) | 1973-08-08 |
Family
ID=13836475
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5037470A Expired GB1326262A (en) | 1969-10-24 | 1970-10-23 | Biaxially stretched films of crystalline vinylidene chloride copolymer |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPS5019594B1 (en) |
| DE (1) | DE2052076A1 (en) |
| GB (1) | GB1326262A (en) |
| NL (1) | NL7015470A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53101890U (en) * | 1977-01-22 | 1978-08-17 | ||
| JP4889478B2 (en) * | 2006-12-27 | 2012-03-07 | 旭化成ケミカルズ株式会社 | Method for heat treatment of vinylidene chloride-methyl acrylate copolymer biaxially stretched film |
-
1969
- 1969-10-24 JP JP8464769A patent/JPS5019594B1/ja active Pending
-
1970
- 1970-10-22 NL NL7015470A patent/NL7015470A/xx unknown
- 1970-10-23 DE DE19702052076 patent/DE2052076A1/en active Pending
- 1970-10-23 GB GB5037470A patent/GB1326262A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL7015470A (en) | 1971-04-27 |
| DE2052076A1 (en) | 1971-05-06 |
| JPS5019594B1 (en) | 1975-07-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |