CN201520058U - Thin film stretching device - Google Patents
Thin film stretching device Download PDFInfo
- Publication number
- CN201520058U CN201520058U CN2009200492848U CN200920049284U CN201520058U CN 201520058 U CN201520058 U CN 201520058U CN 2009200492848 U CN2009200492848 U CN 2009200492848U CN 200920049284 U CN200920049284 U CN 200920049284U CN 201520058 U CN201520058 U CN 201520058U
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- roll
- roller
- film
- preheat
- draw
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- Expired - Fee Related
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- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Abstract
The utility model relates to the technical field of thin film production equipment, in particular to a two-way thin film stretching device which comprises a preheat roll, an infrared heating device, rubber press rolls, a draw roll and a cooling setting roll, wherein a cast film sequentially passes through the preheat roll, the draw roll and the cooling setting roll; the film is flatted by the rubber press rolls when passing through the preheat roll, the draw roll and the cooling setting roller; the infrared heating device is arranged at the film entrance of the draw roll; the preheat roll comprises a polytetrafluoroethylene roll with the roll position being changed into the draw roll; and the draw roll comprises a polytetrafluoroethylene roll with the roll position being changed into the preheat roll. The utility model provides a device which can conduct longitudinal single or double point(s) stretching conversion so as to lead the production line to be capable of producing two-way stretching thin films with wider thickness range and various varieties and improve the production line flexibility.
Description
Technical field
The utility model relates to the production equipment technical field of film, especially a kind ofly is applicable to two-way film stretching device.
Background technology
The production of biaxially oriented polyester film is mainly carried, pre-crystallization, drying, is extruded, measures, filters, casts sheet, sheet thickness measuring, longitudinal stretching, cross directional stretch, traction, film thickness measuring, sided corona treatment, rolling, cuts, packs and form through raw material.
Longitudinal stretching be will finish the sheet of casting sheet, heat by a plurality of high-precision metal rollers, and under certain velocity gradient, with sheet vertically elongate, attenuation, be that polymer molecule is carried out process machine-direction oriented and the typing cooling.The used equipment of longitudinal stretching abbreviates as and vertical draws equipment, can be divided into single-point, 2 points, multiple spot and stretch three types, and no matter the sort of type generally all is made up of preheating zone, drawing zone, typing cooling zone.
Sheet stretches evenly for making when stretching, and more stable drawing point is arranged, and needs elder generation with the sheet heating, and the mode of heating adopts infrared heater, avoids heater or heat medium to cause unstable the stretching with contacting of film.For guaranteeing that draw ratio stablizes constantly, on stretching-machine, drive several pressure rollers with cylinder by compressed air, be pressed on the draw roll.The speed of draw roll is controlled by thyristor speed control system by direct current generator, position according to preheating zone, drawing zone and the cooling section at place, by heat-conducting oil heating or water quench, remaining can or use water quench with electrical heating, can be within ± 1 ℃ to control its surface temperature.
The explained hereafter that present biaxially oriented polyester film production line longitudinal stretching generally adopts single-point to stretch, mainly be between one group of stretching roller, to finish longitudinal stretching, because the needs of production technology, the sheet longitudinal stretching is than can not sudden change significantly improving, the intensity of film just can not improve, line speed is lower, and output is less, and it is just very difficult also very uneconomical to produce thin film.Vertical 2 stretchings are meant that sheet finishes twice stretching between two groups of stretching rollers, and the raising of draw ratio and speed of production is more or less freely, when adopting the thin film of this explained hereafter, advantage is comparatively obvious, but when producing thicker special membrane, be prone to the stretching spot, produce quality problems.
The utility model content
The technical problems to be solved in the utility model is: for the shortcoming that solves above-mentioned existence with not enough, a kind of film stretching device is provided, the device of the conversion that vertically can single, double point stretches has very big benefit to the flexibility that improves production line production.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of film stretching device, has preheat roll, infrared heating device, rubber roller, draw roll and cooling and shaping roller, the preheat roll that casting sheet film passes through successively, draw roll and cooling and shaping roller, film flattens by rubber roller when preheat roll, film drawn roller flattens with film by rubber roller and flattens by rubber roller when the cooling and shaping roller, infrared heating device is arranged on the film porch of draw roll, but preheat roll includes the change of roller position is the polytetrafluoroethylene (PTFE) roller of draw roll, but draw roll includes the change of roller position is the polytetrafluoroethylene (PTFE) roller of preheat roll, roller position change by preheat roll and draw roll, realize the stretching conversion of vertical two point and single-point, the flexibility that improves production line.
Further, for the best results that make to stretch, preheat roll has the polytetrafluoroethylene (PTFE) roller that passes through behind chrome-plated roller that film passes through earlier and the film.
Described draw roll has the polytetrafluoroethylene (PTFE) roller of close preheat roll and the chrome-plated roller of close cooling and shaping roller.
Described cooling and shaping roller is a chrome-plated roller.
In order to improve hot strength, be not prone to stretching spot etc., be provided with the jockey pulley that film passes through before the preheat roll.
Be provided with the jockey pulley that film passes through behind the described cooling and shaping roller.
Described jockey pulley is the roller of aluminizing.
The beneficial effects of the utility model are, film stretching device of the present utility model, design a kind of vertically can be single, double the stretch device of conversion of point, make production line can produce the biaxially oriented film of broad thickness range and many kinds, improve the flexibility of production line, improved the performance of enterprises.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is 2 drawing process flow charts of film of the present utility model;
Fig. 2 is a film single-point drawing process flow chart of the present utility model.
Among the figure 1, preheat roll, 2, infrared heating device, 3, rubber roller, 4, draw roll, 5, the cooling and shaping roller, 6, jockey pulley.
The specific embodiment
In conjunction with the accompanying drawings the utility model is described in further detail now.These accompanying drawings are the schematic diagram of simplification, basic structure of the present utility model only is described in a schematic way, so it only show the formation relevant with the utility model.
As Fig. 1, the film stretching device of preferred forms shown in Figure 2, has preheat roll 1, infrared heating device 2, rubber roller 3, draw roll 4 and cooling and shaping roller 5, the preheat roll 1 that casting sheet film passes through successively, draw roll 4 and cooling and shaping roller 5, film flattens by rubber roller 3 when preheat roll 1, film drawn roller 4 flattens with film by rubber roller 3 and flattens by rubber roller 3 when the cooling and shaping roller 5, infrared heating device 2 is arranged on the film porch of draw roll 4, but preheat roll 1 includes the change of roller position is the polytetrafluoroethylene (PTFE) roller of draw roll 4, is the polytetrafluoroethylene (PTFE) roller of preheat roll 1 but draw roll 4 includes the change of roller position.
When the utility model is implemented, be illustrated in figure 1 as 2 drawing process flow charts, casting sheet film flattens by jockey pulley 6 earlier, then through after 14 preheat roll 1 preheatings, entering 4 draw rolls 4 stretches, heat by infrared heating device 2 when stretching, then cool off, at last by carrying out rolling behind the jockey pulley 6 by 6 cooling and shaping rollers 5.
Be illustrated in figure 2 as single-point drawing process flow chart, casting sheet film flattens by jockey pulley 6 earlier, then through after 16 preheat roll 1 preheatings, entering 2 draw rolls 4 stretches, heat by infrared heating device 2 when stretching, then cool off, at last by carrying out rolling behind the jockey pulley 6 by 6 cooling and shaping rollers 5.
Acted on simultaneously by rubber roller 3 when film is come out to enter preheat roll 1 by jockey pulley 6, make film indeformable, easily preheating is provided with rubber roller 3 as required in the process that stretches etc., improve the flatness of film, improves drawing effect.
With above-mentioned foundation desirable embodiment of the present utility model is enlightenment, and by above-mentioned description, the related work personnel can carry out various change and modification fully in the scope that does not depart from this utility model technological thought.The technical scope of this utility model is not limited to the content on the specification, must determine its technical scope according to the claim scope.
Claims (7)
1. film stretching device, it is characterized in that: have preheat roll (1), infrared heating device (2), rubber roller (3), draw roll (4) and cooling and shaping roller (5), the preheat roll (1) that casting sheet film passes through successively, draw roll (4) and cooling and shaping roller (5), film flattens by rubber roller (3) when preheat roll (1), film drawn roller (4) flattens with film by rubber roller (3) and flattens by rubber roller (3) when cooling and shaping roller (5), infrared heating device (2) is arranged on the film porch of draw roll (4), preheat roll (1) but include roller position change and be the polytetrafluoroethylene (PTFE) roller of draw roll (4), draw roll (4) but include the roller position and change and be the polytetrafluoroethylene (PTFE) roller of preheat roll (1).
2. film stretching device according to claim 1 is characterized in that: described preheat roll (1) has the polytetrafluoroethylene (PTFE) roller that passes through behind chrome-plated roller that film passes through earlier and the film.
3. film stretching device according to claim 1 is characterized in that: described draw roll (4) has the polytetrafluoroethylene (PTFE) roller of close preheat roll (1) and the chrome-plated roller of close cooling and shaping roller (5).
4. film stretching device according to claim 1 is characterized in that: described cooling and shaping roller (5) is a chrome-plated roller.
5. film stretching device according to claim 1 is characterized in that: described preheat roll (1) is preceding to be provided with the jockey pulley (6) that film passes through.
6. film stretching device according to claim 1 or 5 is characterized in that: be provided with the jockey pulley (6) that film passes through behind the described cooling and shaping roller (5).
7. according to claim 5 and/or 6 described film stretching devices, it is characterized in that: described jockey pulley (6) is the roller of aluminizing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200492848U CN201520058U (en) | 2009-10-26 | 2009-10-26 | Thin film stretching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200492848U CN201520058U (en) | 2009-10-26 | 2009-10-26 | Thin film stretching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201520058U true CN201520058U (en) | 2010-07-07 |
Family
ID=42506238
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200492848U Expired - Fee Related CN201520058U (en) | 2009-10-26 | 2009-10-26 | Thin film stretching device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201520058U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103328187A (en) * | 2011-03-22 | 2013-09-25 | 东丽株式会社 | Method for stretching film |
| CN104149368A (en) * | 2014-07-28 | 2014-11-19 | 浙江绍兴华东包装有限公司 | Single-point and double-point switching type BOPET thin film processing device and method |
| CN106426682A (en) * | 2016-09-30 | 2017-02-22 | 营口康辉石化有限公司 | Method for eliminating crystal point on surface of thick film |
| CN114643703A (en) * | 2022-03-24 | 2022-06-21 | 江苏集萃功能材料研究所有限公司 | A film stretching system and its application |
| CN115416272A (en) * | 2022-09-16 | 2022-12-02 | 华瑞达包装材料股份有限公司 | Stretching device is used in production of BOPP film |
-
2009
- 2009-10-26 CN CN2009200492848U patent/CN201520058U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103328187A (en) * | 2011-03-22 | 2013-09-25 | 东丽株式会社 | Method for stretching film |
| CN103328187B (en) * | 2011-03-22 | 2015-09-30 | 东丽株式会社 | Film drawing process |
| CN104149368A (en) * | 2014-07-28 | 2014-11-19 | 浙江绍兴华东包装有限公司 | Single-point and double-point switching type BOPET thin film processing device and method |
| CN106426682A (en) * | 2016-09-30 | 2017-02-22 | 营口康辉石化有限公司 | Method for eliminating crystal point on surface of thick film |
| CN106426682B (en) * | 2016-09-30 | 2019-06-28 | 营口康辉石化有限公司 | A method of eliminating thick film film surface crystal point |
| CN114643703A (en) * | 2022-03-24 | 2022-06-21 | 江苏集萃功能材料研究所有限公司 | A film stretching system and its application |
| CN115416272A (en) * | 2022-09-16 | 2022-12-02 | 华瑞达包装材料股份有限公司 | Stretching device is used in production of BOPP film |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100707 Termination date: 20151026 |
|
| EXPY | Termination of patent right or utility model |