CN1569450A - Biaxial tension production method for polyvinyl chloride kinking film - Google Patents
Biaxial tension production method for polyvinyl chloride kinking film Download PDFInfo
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- CN1569450A CN1569450A CN 200410014852 CN200410014852A CN1569450A CN 1569450 A CN1569450 A CN 1569450A CN 200410014852 CN200410014852 CN 200410014852 CN 200410014852 A CN200410014852 A CN 200410014852A CN 1569450 A CN1569450 A CN 1569450A
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Abstract
The invention is a double-way extension method for polyvinyl chloride screwing film. It uses polyvinyl chloride as material, heats the polyvinyl chloride piece material at first, the temperature is controlled between 70deg.C-100deg.C, then it is extended, the speed is 30-90meters per minute, the extension rate is controlled between 1:1.1 and 1:1.9, then carries shaping, the roller cylinder is cooled down when in shaping, the temperature is controlled under 45 degrees, finally carries on cutting and packaging, the stress is controlled between 20N and 30N, the speed is 160-200meters per minute. When carrying on double-way extension to the polyvinyl chloride, it realizes three temperature areas to control; the temperature of the polyvinyl chloride is more even, controls the extension speed and extension rate strictly. The method has excellent lengthwise and transverse extension intensity, the diaphaneity is excellent.
Description
Technical field
The present invention relates to a kind of production method of PVC tangle film, a kind of specifically PVC tangle film biaxial tension production method
Background technology
PVC tangle film is called for short the PVC torsion film, is a kind of nontoxic, colourless transparent membrane, is widely used in the packing of product, and demand constantly increases.PVC tangle film production at present generally all is to make by blown film method or flat embrane method, they all are the prescriptions of forming with Corvic, plasticizer, heat stabilizer, reinforcing agent, lubricant, processing aid etc., and then technological processes such as process high speed heat is mixed, the mixing of low speed heat are produced the polychlorovinyl sheet material raw material, employing blown film method or flat embrane method when shaping.So-called blown film method is directly the polyvinyl chloride raw material to be sent into inflation film manufacturing machine, and the air that utilizes inflation film manufacturing machine to blow out is blown into film to the polyvinyl chloride raw material, then cooling and shaping, can become finished product after drawing, batch, cut packing; Extruding flat embrane method, is the flat film machine of directly the polyvinyl chloride raw material being sent into, and under the flat film head extruding of flat film machine, the polyvinyl chloride raw material is produced finished product.The PVC tangle film that above-mentioned two kinds of methods are produced all exist both sides tight in the middle of the phenomenon of pine, and product has that transparency is not high, hot strength is low, fabric width is narrow, shortcomings such as poor flatness are brought great inconvenience to use.
Summary of the invention
This invent technical problem to be solved be exactly the blown film method and extrude PVC tangle film that flat embrane method produces all exist both sides tight in the middle of the phenomenon of pine, and product has, and transparency is not high, hot strength is low, fabric width is narrow, shortcomings such as poor flatness provide the PVC tangle film biaxial tension that a kind of flatness is good, transparency is high production method.
Solve the process technology scheme that its technical problem adopts: with polychlorovinyl sheet material is raw material, at first polychlorovinyl sheet material is heated, temperature is controlled at 70 ℃-100 ℃, stretches then, draw speed be 30-90 rice/minute, stretch rate is controlled at 1: 1.1-1: 1.9, and typing during typing is lowered the temperature roller again, roller temperature is controlled at below 45 ℃, cut packing at last, the tension force of cutting when packing is controlled at 20-30 newton, speed be 160-200 rice/minute.
Described heating is that the zone of heating with the polychlorovinyl sheet material process is divided into three warm areas, and the temperature of each warm area is 70-90 ℃, and the temperature of second warm area is 75-95 ℃, and the three-temperature-zone temperature is 80-100 ℃.
Beneficial effect: owing to adopted the production technology scheme of biaxial tension, when polychlorovinyl sheet material is carried out biaxial tension, implementing three warm areas controls, make polychlorovinyl sheet material be subjected to temperature more even, strict control draw speed and stretch rate have thoroughly changed blown film method and the phenomenon of extruding the tight middle pine in flat embrane method product both sides, product vertical, horizontal hot strength height with this method production, transparency is good, and flatness is good, amplitude broad, is particularly suitable for the high speed machine automatic packaging.
The specific embodiment
Embodiment 1: this invention biaxial tension method is produced PVC tangle film, is to be that raw material can obtain PVC tangle film through heating, stretch, finalize the design, cut this several steps of packing with common polychlorovinyl sheet material.
Concrete production method is as follows:
1, heat: use the UV250 stretching-machine, stretching-machine is the commercially available prod, and stretching-machine is made of baking oven and a plurality of roller, and baking oven and each roller heat by electric energy.Polychlorovinyl sheet material is put into baking oven heats, the thickness of selecting polychlorovinyl sheet material for use is that the sheet material of 30um thickness is the use raw material, make the after-tack of polychlorovinyl sheet material thermally equivalent, for stretching creates conditions, in operating process, the temperature of first temperature province in the baking oven of stretching-machine is that 70 ℃, the temperature of second temperature province are that 75 ℃, the temperature of the 3rd temperature province are 80 ℃, and speed is 30 meters/minute.
2, stretch: polychlorovinyl sheet material is carried out cross directional stretch, to the heating of sheet material, softening, by lateral traction, polychlorovinyl sheet material is laterally widened again by baking oven.In using UV250 stretching-machine process, concrete extensibility is controlled to be 1: 1.9.
3, typing: feed cooling water in the shaping roller tube in the UV250 stretching-machine, shaping roller tube through supercooling, by fully contacting of polychlorovinyl sheet material and shaping roller tube outer surface, the polychloroethylene film cooling and shaping after stretched, make qualified PVC tangle film, the temperature of the cooling water by shaping roller tube is controlled at below 25 ℃.
4, cut packing: the polychloroethylene film product through cooling and shaping is cut packing, produced the required product of user through cutting machine.Use the QF/2380 cutting machine,, cut, produce qualified product through cutting knife by home roll, traction, the tension force control of cutting machine.Cut the width location and want accurately to cut tension force and be controlled between 20 newton, the speed of cutting when cutting is moderate, is controlled at 160 meters/minute.No sudden and violent muscle in the middle of requiring during packing, both sides do not have webbing.
Embodiment 2: heat: the thickness of selecting polychlorovinyl sheet material for use is the sheet material of 35um thickness, the temperature of first temperature province in the baking oven of stretching-machine is that 78 ℃, the temperature of second temperature province are that 80 ℃, the temperature of the 3rd temperature province are 90 ℃, and speed is 50 meters/minute.Other and embodiment 1 omit together.
Stretch: concrete extensibility is controlled to be 1: 1.1.Other and embodiment 1 omit together.
Cut packing: cut tension force and be controlled between 25 newton, the speed of cutting when cutting is moderate, is controlled at 180 meters/minute.Other and embodiment 1 omit together.
Embodiment 3: heat: the thickness of selecting polychlorovinyl sheet material for use is the sheet material of 40um thickness, the temperature of first temperature province in the baking oven of stretching-machine is that 90 ℃, the temperature of second temperature province are that 95 ℃, the temperature of the 3rd temperature province are 100 ℃, and speed is 90 meters/minute.Other and embodiment 1 omit together.
Stretch: concrete extensibility is controlled to be 1: 1.3.Other and embodiment 1 omit together.
Cut packing: cut tension force and be controlled between 30 newton, the speed of cutting when cutting is moderate, is controlled between 200 meters/minute.Other and embodiment 1 omit together.
Claims (2)
1, a kind of PVC tangle film biaxial tension production method, it is characterized in that: with polychlorovinyl sheet material is raw material, at first polychlorovinyl sheet material is heated, temperature is controlled at 70 ℃-100 ℃, stretch then, draw speed be 30-90 rice/minute, stretch rate is controlled at 1: 1.1-1: 1.9, typing again, during typing roller is lowered the temperature, roller temperature is controlled at below 45 ℃, cuts packing at last, the tension force of cutting when packing is controlled at 20-30 newton, speed be 160-200 rice/minute.
2, PVC tangle film biaxial tension production method according to claim 1, it is characterized in that: described heating is that the zone of heating with the polyvinyl chloride process is divided into three warm areas, the temperature of each warm area is 70-90 ℃, the temperature of second warm area is 75-95 ℃, and the three-temperature-zone temperature is 80-100 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410014852 CN1569450A (en) | 2004-05-07 | 2004-05-07 | Biaxial tension production method for polyvinyl chloride kinking film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410014852 CN1569450A (en) | 2004-05-07 | 2004-05-07 | Biaxial tension production method for polyvinyl chloride kinking film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1569450A true CN1569450A (en) | 2005-01-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410014852 Pending CN1569450A (en) | 2004-05-07 | 2004-05-07 | Biaxial tension production method for polyvinyl chloride kinking film |
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| CN (1) | CN1569450A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102152585A (en) * | 2010-12-16 | 2011-08-17 | 浙江强盟实业股份有限公司 | Twistable polyester film and preparation method thereof |
| CN104527101A (en) * | 2014-11-26 | 2015-04-22 | 界首市天鸿包装材料有限公司 | Production technology for R-PVC tangle film |
-
2004
- 2004-05-07 CN CN 200410014852 patent/CN1569450A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102152585A (en) * | 2010-12-16 | 2011-08-17 | 浙江强盟实业股份有限公司 | Twistable polyester film and preparation method thereof |
| CN104527101A (en) * | 2014-11-26 | 2015-04-22 | 界首市天鸿包装材料有限公司 | Production technology for R-PVC tangle film |
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