JPS5655235A - Manufacture of polyester heat shrinkable tube - Google Patents
Manufacture of polyester heat shrinkable tubeInfo
- Publication number
- JPS5655235A JPS5655235A JP13151379A JP13151379A JPS5655235A JP S5655235 A JPS5655235 A JP S5655235A JP 13151379 A JP13151379 A JP 13151379A JP 13151379 A JP13151379 A JP 13151379A JP S5655235 A JPS5655235 A JP S5655235A
- Authority
- JP
- Japan
- Prior art keywords
- tube
- stretching
- stretched
- kept
- given
- 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
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
- B29C61/00—Shaping by liberation of internal stresses; Making preforms having internal stresses; Apparatus therefor
- B29C61/003—Shaping by liberation of internal stresses; Making preforms having internal stresses; Apparatus therefor characterised by the choice of material
-
- 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
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Abstract
PURPOSE:To improve an anti-chemical property, a heat resistance, and a mechanical quality, by a method wherein an unstretched tube made from given polyester mixture is kept at a given temperature, and the tube is stretched by a given ratio in longitudinal and lateral directions by feeding with pressure a gaseous matter into the tube. CONSTITUTION:An unstretched tube is molded from a mixture of 10-80wt% of polyester copolymer and 90-20wt% of polyethylene terephthalate, said polyester copolymer being made from 95-65wt% of terephtalate acid, 5-35wt% of isophthalic acid and ethylene glicol. A tube temperature at a start point of stretching is kept at 80-95 deg.C, and a tube temperature at a terminal point of stretching is kept at 5-20 deg.C lower than that at the start point of stretching. With this gas is pressedly fed into the tube, and the film is stretched 2.5 times or more in a radial direction. It is then loosened by 0.5-15% in an axial direction at 70-85 deg.C, and simultaneously, is re-stretched by 1-20% in the radial direction to produce the beat shrinkable tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13151379A JPS5655235A (en) | 1979-10-12 | 1979-10-12 | Manufacture of polyester heat shrinkable tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13151379A JPS5655235A (en) | 1979-10-12 | 1979-10-12 | Manufacture of polyester heat shrinkable tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5655235A true JPS5655235A (en) | 1981-05-15 |
| JPS6241860B2 JPS6241860B2 (en) | 1987-09-04 |
Family
ID=15059786
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13151379A Granted JPS5655235A (en) | 1979-10-12 | 1979-10-12 | Manufacture of polyester heat shrinkable tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5655235A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5864958A (en) * | 1981-10-09 | 1983-04-18 | 大日本インキ化学工業株式会社 | Heat-shrinkable film and method for heat-shrinkable packaging of articles using the heat-shrinkable film |
| JPS60206839A (en) * | 1984-03-30 | 1985-10-18 | Okura Ind Co Ltd | heat shrinkable polyester film |
| JPS61149348A (en) * | 1984-12-24 | 1986-07-08 | 大倉工業株式会社 | Shrink packaging with excellent impact resistance |
| JPS61203161A (en) * | 1985-03-05 | 1986-09-09 | Mitsui Petrochem Ind Ltd | heat shrink film |
| JPS6228226A (en) * | 1985-07-30 | 1987-02-06 | Okura Ind Co Ltd | Unidirectionally heat-shrinkable tubular film and manufacture thereof |
| JPS6291555A (en) * | 1985-10-18 | 1987-04-27 | Toyobo Co Ltd | Heat-shrinkable polyester film |
| JPS63170019A (en) * | 1987-01-07 | 1988-07-13 | Mitsubishi Plastics Ind Ltd | Curved part covering method |
-
1979
- 1979-10-12 JP JP13151379A patent/JPS5655235A/en active Granted
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5864958A (en) * | 1981-10-09 | 1983-04-18 | 大日本インキ化学工業株式会社 | Heat-shrinkable film and method for heat-shrinkable packaging of articles using the heat-shrinkable film |
| JPS60206839A (en) * | 1984-03-30 | 1985-10-18 | Okura Ind Co Ltd | heat shrinkable polyester film |
| JPS61149348A (en) * | 1984-12-24 | 1986-07-08 | 大倉工業株式会社 | Shrink packaging with excellent impact resistance |
| JPS61203161A (en) * | 1985-03-05 | 1986-09-09 | Mitsui Petrochem Ind Ltd | heat shrink film |
| JPS6228226A (en) * | 1985-07-30 | 1987-02-06 | Okura Ind Co Ltd | Unidirectionally heat-shrinkable tubular film and manufacture thereof |
| JPS6291555A (en) * | 1985-10-18 | 1987-04-27 | Toyobo Co Ltd | Heat-shrinkable polyester film |
| JPS63170019A (en) * | 1987-01-07 | 1988-07-13 | Mitsubishi Plastics Ind Ltd | Curved part covering method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6241860B2 (en) | 1987-09-04 |
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