CN104527101A - Production technology for R-PVC tangle film - Google Patents
Production technology for R-PVC tangle film Download PDFInfo
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- CN104527101A CN104527101A CN201410686518.5A CN201410686518A CN104527101A CN 104527101 A CN104527101 A CN 104527101A CN 201410686518 A CN201410686518 A CN 201410686518A CN 104527101 A CN104527101 A CN 104527101A
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Abstract
The invention discloses a production technology for an R-PVC tangle film, and relates to the field of film processing. The production technology comprises steps of material mixing, extrusion plasticization, calendaring shaping, longitudinal bidirectional stretching shaping, transversal bidirectional stretching shaping, trimming, surface corona treatment, rolling and film forming, examination, slitting and packaging, and the like. The method employs the stepped extending process which comprises first calendaring, second transversal bidirectional stretching and third longitudinal bidirectional stretching, and employs multi-stage control and multi-stage cooling for performing cooling control on all cooling segments, so that a polyvinyl chloride sheet is relatively uniformly heated, the product produced by the method is guaranteed to have high longitudinal and transversal tensile strength, good flatness and wide amplitude, and the phenomenon that products produced by a film blowing method and a flat-membrane extrusion method have two tight edges and a loose middle part is thoroughly changed.
Description
Technical field
The present invention relates to film manufacture field, particularly relate to a kind of production technology of R-PVC torsion film.
Background technology
PVC tangle film, is called for short PVC torsion film, is a kind of nontoxic, colourless transparent membrane, is widely used in the packing of product, and demand constantly increases, and it is all generally obtained by blowing or flat embrane method that current PVC tangle film is produced, and they are all with Corvic, plasticizer, heat stabilizer, reinforcing agent, lubricant, the formula of the composition such as processing aid, and then through heat mixing at a high speed, the mixing of low speed heat waits technological process to produce polychlorovinyl sheet material raw material, adopting blowing or flat embrane method when being shaped, so-called blowing, is directly polyvinyl chloride raw material is sent into inflation film manufacturing machine, the air utilizing inflation film manufacturing machine to blow out to polyvinyl chloride raw material inflation film forming, then cooling and shaping, traction, batch, finished product is got final product: extrude flat embrane method after cutting packaging, directly polyvinyl chloride raw material is sent into flat film machine, under the flat film head extruding of flat film machine, polyvinyl chloride raw material is produced into product, the PVC tangle film that above-mentioned two kinds of methods are produced all also exists the phenomenon of the tight middle pine in both sides, and hot strength is low, fabric width is narrow, the shortcomings such as poor flatness, bring great inconvenience to use, although also some is improved one's methods now, still can not address these problems.
Summary of the invention
For overcoming the deficiency in prior art, the object of the invention is to provide a kind of production technology of R-PVC torsion film.
For realizing object of the present invention, technical scheme of the present invention is as follows:
A production technology for R-PVC torsion film, comprises the following steps:
1) prepare material by weight percentage: the flexibilizer of 90-95%R-PVC powder, 5-10%, carry out heated material in a kettle. and be uniformly mixed, in described reactor, heating-up temperature is 160 ~ 180 DEG C;
2) at extruder plastifying fusion, then extrude by the flow of setting the co-extrusion diaphragm forming setting thickness at T-shaped die head, diaphragm is chilling sizing on the chill roll of 45-90 DEG C, obtains polychlorovinyl sheet material;
3) polychlorovinyl sheet material is put into calender, control the temperature of calender at 170-210 DEG C, Transmission Ratio Control is 1:1.2-1.5, the polychloroethylene film of extrusion is put into cooling calibrator, in the cooling roller of cooling calibrator, pass into the water of 40-50 DEG C, the temperature of controlled cooling model roller and the speed of travel, chilling temperature controls at 25-75 DEG C, the speed of travel controls at 45-85m/min, makes polyvinyl chloride film cooling and shaping;
4) secondary heating is carried out to polychlorovinyl sheet material, after 100-140 DEG C of preheat roll preheating, carry out 1:1.5-3 doubly horizontal biaxial tension, with the chill roll cooling and shaping of 60-95 DEG C;
5) 1:2-3 longitudinal biaxial tension is doubly carried out in the baking oven of 110-120 DEG C to the diaphragm after the diaphragm of shaping in step 4) stretches after preheating, then at 70-90 DEG C cooling and shaping;
6) roller is lowered the temperature, carry out trimming, carry out surface corona process, rolling film forming, check, finally carry out cutting packaging.
The production technology of above-mentioned a kind of R-PVC torsion film, wherein, in described step 1), described flexibilizer is the copolymer mixture that 40-80% polystyrene and 20-60% gather along butadiene.
The production technology of above-mentioned a kind of R-PVC torsion film, wherein, the roller temperature in described step 6) during trimming controls below 45 DEG C.
The production technology of above-mentioned a kind of R-PVC torsion film, wherein, tension force when cutting packaging in described step 6) controls at 20-30N, and speed is 160-200m/min.
The production technology of above-mentioned a kind of R-PVC torsion film, wherein, described step 4) and 5) in cooling and shaping time, temperature declines from high to low, and decrease speed is 2-5 DEG C/min.
Beneficial effect of the present invention: the method that in the method, substep extends, by the technique of once calendering and the horizontal biaxial tension of secondary and three longitudinal biaxial tensiones, adopt Multistage Control and multistage cooling, and respectively cooling control is carried out to each cooling section, make polychlorovinyl sheet material be subject to temperature evenly, ensure that the product vertical, horizontal hot strength that the method is produced is high, flatness is good, amplitude broad, revolutionizes blowing and the phenomenon extruding the tight middle pine in flat embrane method product both sides.
Detailed description of the invention
The technological means realized for making the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with detailed description of the invention, setting forth the present invention further.
embodiment 1:a production technology for R-PVC torsion film, comprises the following steps:
1) prepare material by weight percentage: 40% polystyrene of 900gR-PVC powder, 100g and the 60% poly-copolymer mixture along butadiene, carry out heated material in a kettle. and be uniformly mixed, in described reactor, heating-up temperature is 170 DEG C;
2) at extruder plastifying fusion, then extrude by the flow of setting the co-extrusion diaphragm forming setting thickness at T-shaped die head, diaphragm is chilling sizing on the chill roll of 45 DEG C, obtains polychlorovinyl sheet material;
3) polychlorovinyl sheet material is put into calender, control the temperature of calender at 210 DEG C, Transmission Ratio Control is 1:1.2-1.4, the polychloroethylene film of extrusion is put into cooling calibrator, in the cooling roller of cooling calibrator, pass into the water of 50 DEG C, the temperature of controlled cooling model roller and the speed of travel, chilling temperature controls at 25 DEG C, the speed of travel controls at 70m/min, makes polyvinyl chloride film cooling and shaping;
4) carry out secondary heating to polychlorovinyl sheet material, after 120 DEG C of preheat roll preheatings, carry out 1:2 doubly horizontal biaxial tension, with the chill roll cooling and shaping of 60 DEG C, during cooling and shaping, temperature declines from high to low, and decrease speed is 3 DEG C/min;
5) 1:2 longitudinal biaxial tension is doubly carried out in the baking oven of 110 DEG C to the diaphragm after the diaphragm of shaping in step 4) stretches after preheating, then at 70 DEG C cooling and shaping, during cooling and shaping, temperature declines from high to low, and decrease speed is 5 DEG C/min;
6) lowered the temperature by roller, roller temperature controls to carry out trimming at 30 DEG C, carries out surface corona process, rolling film forming, and check, finally carry out cutting packaging, tension force when cutting packaging controls at 20N, and speed is 200m/min.
embodiment 2:a production technology for R-PVC torsion film, comprises the following steps:
1) prepare material by weight percentage: 80% polystyrene of 95gR-PVC powder, 5g and the 20% poly-copolymer mixture along butadiene, carry out heated material in a kettle. and be uniformly mixed, in described reactor, heating-up temperature is 180 DEG C;
2) at extruder plastifying fusion, then extrude by the flow of setting the co-extrusion diaphragm forming setting thickness at T-shaped die head, diaphragm is chilling sizing on the chill roll of 90 DEG C, obtains polychlorovinyl sheet material;
3) polychlorovinyl sheet material is put into calender, control the temperature of calender at 170 DEG C, Transmission Ratio Control is 1:1.2, the polychloroethylene film of extrusion is put into cooling calibrator, in the cooling roller of cooling calibrator, pass into the water of 40 DEG C, the temperature of controlled cooling model roller and the speed of travel, chilling temperature controls at 40 DEG C, the speed of travel controls at 45m/min, makes polyvinyl chloride film cooling and shaping;
4) carry out secondary heating to polychlorovinyl sheet material, after 140 DEG C of preheat roll preheatings, carry out 1:3 doubly horizontal biaxial tension, with the chill roll cooling and shaping of 95 DEG C, during cooling and shaping, temperature declines from high to low, and decrease speed is 2 DEG C/min;
5) 1:2.5 longitudinal biaxial tension is doubly carried out in the baking oven of 115 DEG C to the diaphragm after the diaphragm of shaping in step 4) stretches after preheating, then at 90 DEG C cooling and shaping, during cooling and shaping, temperature declines from high to low, and decrease speed is 4 DEG C/min;
6) lowered the temperature by roller, roller temperature controls to carry out trimming at 45 DEG C, carries out surface corona process, rolling film forming, and check, finally carry out cutting packaging, tension force when cutting packaging controls at 25N, and speed is 160m/min.
embodiment 3:a production technology for R-PVC torsion film, comprises the following steps:
1) prepare material by weight percentage: 50% polystyrene of 185gR-PVC powder, 15g and the 50% poly-copolymer mixture along butadiene, carry out heated material in a kettle. and be uniformly mixed, in described reactor, heating-up temperature is 160 DEG C;
2) at extruder plastifying fusion, then extrude by the flow of setting the co-extrusion diaphragm forming setting thickness at T-shaped die head, diaphragm is chilling sizing on the chill roll of 50 DEG C, obtains polychlorovinyl sheet material;
3) polychlorovinyl sheet material is put into calender, control the temperature of calender at 200 DEG C, Transmission Ratio Control is 1:1.2, the polychloroethylene film of extrusion is put into cooling calibrator, in the cooling roller of cooling calibrator, pass into the water of 45 DEG C, the temperature of controlled cooling model roller and the speed of travel, chilling temperature controls at 75 DEG C, the speed of travel controls at 85m/min, makes polyvinyl chloride film cooling and shaping;
4) carry out secondary heating to polychlorovinyl sheet material, after 100 DEG C of preheat roll preheatings, carry out 1:1.5 doubly horizontal biaxial tension, with the chill roll cooling and shaping of 85 DEG C, during cooling and shaping, temperature declines from high to low, and decrease speed is 5 DEG C/min;
5) 1:3 longitudinal biaxial tension is doubly carried out in the baking oven of 120 DEG C to the diaphragm after the diaphragm of shaping in step 4) stretches after preheating, then at 80 DEG C cooling and shaping, during cooling and shaping, temperature declines from high to low, and decrease speed is 2 DEG C/min;
6) lowered the temperature by roller, roller temperature controls to carry out trimming at 20 DEG C, carries out surface corona process, rolling film forming, and check, finally carry out cutting packaging, tension force when cutting packaging controls at 30N, and speed is 180m/min.
The method that in the method, substep extends, by the technique of once calendering and the horizontal biaxial tension of secondary and three longitudinal biaxial tensiones, adopt Multistage Control and multistage cooling, and respectively cooling control is carried out to each cooling section, make polychlorovinyl sheet material be subject to temperature evenly, ensure that the product vertical, horizontal hot strength that the method is produced is high, flatness is good, amplitude broad, revolutionizes blowing and the phenomenon extruding the tight middle pine in flat embrane method product both sides.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize description of the present invention to do equivalent structure or the conversion of equivalent flow process, or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (5)
1. a production technology for R-PVC torsion film, is characterized in that: comprise the following steps:
1) prepare material by weight percentage: the flexibilizer of 90-95%R-PVC powder, 5-10%, carry out heated material in a kettle. and be uniformly mixed, in described reactor, heating-up temperature is 160 ~ 180 DEG C;
2) at extruder plastifying fusion, then extrude by the flow of setting the co-extrusion diaphragm forming setting thickness at T-shaped die head, diaphragm is chilling sizing on the chill roll of 45-90 DEG C, obtains polychlorovinyl sheet material;
3) polychlorovinyl sheet material is put into calender, control the temperature of calender at 170-210 DEG C, Transmission Ratio Control is 1:1.2-1.5, the polychloroethylene film of extrusion is put into cooling calibrator, in the cooling roller of cooling calibrator, pass into the water of 40-50 DEG C, the temperature of controlled cooling model roller and the speed of travel, chilling temperature controls at 25-75 DEG C, the speed of travel controls at 45-85m/min, makes polyvinyl chloride film cooling and shaping;
4) secondary heating is carried out to polychlorovinyl sheet material, after 100-140 DEG C of preheat roll preheating, carry out 1:1.5-3 doubly horizontal biaxial tension, with the chill roll cooling and shaping of 60-95 DEG C;
5) 1:2-3 longitudinal biaxial tension is doubly carried out in the baking oven of 110-120 DEG C to the diaphragm after the diaphragm of shaping in step 4) stretches after preheating, then at 70-90 DEG C cooling and shaping;
6) roller is lowered the temperature, carry out trimming, carry out surface corona process, rolling film forming, check, finally carry out cutting packaging.
2. the production technology of a kind of R-PVC torsion film according to claim 1, is characterized in that, in described step 1), described flexibilizer is the copolymer mixture that 40-80% polystyrene and 20-60% gather along butadiene.
3. the production technology of a kind of R-PVC torsion film according to claim 1, it is characterized in that, the roller temperature in described step 6) during trimming controls below 45 DEG C.
4. the production technology of a kind of R-PVC torsion film according to claim 1, it is characterized in that, tension force when cutting packaging in described step 6) controls at 20-30N, and speed is 160-200m/min.
5. the production technology of a kind of R-PVC torsion film according to claim 1, is characterized in that, described step 4) and 5) in cooling and shaping time, temperature declines from high to low, and decrease speed is 2-5 DEG C/min.
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| CN201410686518.5A CN104527101A (en) | 2014-11-26 | 2014-11-26 | Production technology for R-PVC tangle film |
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| CN201410686518.5A CN104527101A (en) | 2014-11-26 | 2014-11-26 | Production technology for R-PVC tangle film |
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Cited By (5)
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| CN108044919A (en) * | 2017-12-08 | 2018-05-18 | 广州宏信塑胶工业有限公司 | The secondary extension process of PVC adhesive plasters and its application |
| CN110120540A (en) * | 2018-02-05 | 2019-08-13 | 中国科学院金属研究所 | A kind of continuous preparation method of porous composite ionic membrane |
| CN110698783A (en) * | 2018-07-09 | 2020-01-17 | 江苏永润包装材料有限公司 | PVC (polyvinyl chloride) tangle film for candy packaging and preparation process thereof |
| CN111574784A (en) * | 2020-05-20 | 2020-08-25 | 江苏大海塑料股份有限公司 | High-strength anti-puncture winding film with high brightness and preparation method thereof |
| CN111923459A (en) * | 2020-07-01 | 2020-11-13 | 湖北环福塑料制品有限公司 | Process for calendering sheet into film |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108044919A (en) * | 2017-12-08 | 2018-05-18 | 广州宏信塑胶工业有限公司 | The secondary extension process of PVC adhesive plasters and its application |
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| CN110120540A (en) * | 2018-02-05 | 2019-08-13 | 中国科学院金属研究所 | A kind of continuous preparation method of porous composite ionic membrane |
| CN110120540B (en) * | 2018-02-05 | 2022-04-05 | 中国科学院金属研究所 | Continuous preparation method of porous composite ionic membrane |
| CN110698783A (en) * | 2018-07-09 | 2020-01-17 | 江苏永润包装材料有限公司 | PVC (polyvinyl chloride) tangle film for candy packaging and preparation process thereof |
| CN111574784A (en) * | 2020-05-20 | 2020-08-25 | 江苏大海塑料股份有限公司 | High-strength anti-puncture winding film with high brightness and preparation method thereof |
| CN111923459A (en) * | 2020-07-01 | 2020-11-13 | 湖北环福塑料制品有限公司 | Process for calendering sheet into film |
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Address after: Fuyang City, Anhui province 236500 victory road Jieshou City Industrial Park, No. 3 Applicant after: Hongxin, sky, Jieshou City material limited-liability company Address before: Fuyang City, Anhui province 236500 victory road Jieshou City Industrial Park, No. 3 Applicant before: Jieshou Tianhong Packaging Materials Co., Ltd. |
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