JPS5688437A - Production of packaging film having high elastic modulus - Google Patents
Production of packaging film having high elastic modulusInfo
- Publication number
- JPS5688437A JPS5688437A JP16474279A JP16474279A JPS5688437A JP S5688437 A JPS5688437 A JP S5688437A JP 16474279 A JP16474279 A JP 16474279A JP 16474279 A JP16474279 A JP 16474279A JP S5688437 A JPS5688437 A JP S5688437A
- Authority
- JP
- Japan
- Prior art keywords
- film
- heat
- temp
- temperature
- extruded
- 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
- 229920006280 packaging film Polymers 0.000 title 1
- 239000012785 packaging film Substances 0.000 title 1
- 239000004698 Polyethylene Substances 0.000 abstract 4
- 229920000573 polyethylene Polymers 0.000 abstract 3
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 abstract 2
- 239000005977 Ethylene Substances 0.000 abstract 2
- -1 polyethylene Polymers 0.000 abstract 2
- 239000011347 resin Substances 0.000 abstract 2
- 229920005989 resin Polymers 0.000 abstract 2
- 229920001577 copolymer Polymers 0.000 abstract 1
- 239000002356 single layer Substances 0.000 abstract 1
- 239000004711 α-olefin Substances 0.000 abstract 1
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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
- B29C2948/92895—Barrel or housing
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92904—Die; Nozzle zone
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Wrappers (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
PURPOSE:To obtain the titled film in which Young's modulus is remarkably improved, by a method wherein a low-density PE having a specified heat-resisting temperature is extruded into a film at a resin temperature not lower than a specified temperature, and the extruded PE film is heat-treated in an unstreched state. CONSTITUTION:A low-density ethylene polymer having a heat-resisting temp. of 107-118 deg.C and a density of 0.925-0.939, or a copolymer of ethylene with an alpha- olefin and composed mainly of ethylene, is extruded into a film at a resin temp. of not lower than 260 deg.C. The resulting polyethylene film is left to stand in an unstreched state at a temperature which is 70-10 deg.C lower than the above heat-resisting temperature, or at a temp. of 40-95 deg.C for 1sec-15 days in order to heat- treat the polyethylene film. For example, a lap film-rolled package packed in a corrugated box is left to stand at a temp. of 40-70 deg.C for 2-15 days. Alternatively, a single-layer film is heat-treated in an oven kept at a temp. of 80-95 deg.C by an infrared heater, etc. for 1-50sec. The titled film having excellent transparency and remarkably improved Young's modulus can be produced at low cost with good productivity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54164742A JPS6044121B2 (en) | 1979-12-20 | 1979-12-20 | Manufacturing method of high elastic modulus film for packaging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54164742A JPS6044121B2 (en) | 1979-12-20 | 1979-12-20 | Manufacturing method of high elastic modulus film for packaging |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5688437A true JPS5688437A (en) | 1981-07-17 |
| JPS6044121B2 JPS6044121B2 (en) | 1985-10-02 |
Family
ID=15799037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP54164742A Expired JPS6044121B2 (en) | 1979-12-20 | 1979-12-20 | Manufacturing method of high elastic modulus film for packaging |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6044121B2 (en) |
-
1979
- 1979-12-20 JP JP54164742A patent/JPS6044121B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6044121B2 (en) | 1985-10-02 |
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