CN103612396A - Production process of plastic films - Google Patents
Production process of plastic films Download PDFInfo
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- CN103612396A CN103612396A CN201310550207.1A CN201310550207A CN103612396A CN 103612396 A CN103612396 A CN 103612396A CN 201310550207 A CN201310550207 A CN 201310550207A CN 103612396 A CN103612396 A CN 103612396A
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Abstract
The invention discloses a production process of plastic films. The production process comprises the following steps of (1) sieving materials; (2) melting; (3) modifying; (4) extruding and casting; (5) cooling; (6) carrying out corona treatment; and (7) cutting waste edge rolls. The production process disclosed by the invention has the advantages that the process is reasonable and simple, the process flow is greatly shortened, the efficiency is high, the speed is fast, the material selection is reasonable, the cost is low, fast degradation can be achieved, and the environmental pollution is alleviated; most importantly, the heat resistance, the wear resistance and the toughness are enhanced on the basis of the performance of the original plastic film, safety, convenience and reliability are achieved, and the market prospect is wide.
Description
Technical field
The production technology of the plastic, rubber the present invention relates to, particularly relates to a kind of plastic film production process.
Background technology
Plastic sheeting is the common daily necessitiess of present people, it is good that plastic sheeting has the transparency, it is moist good to hinder, excellent heat resistance, easy to use, the advantages such as low price are widely used in all trades and professions, but plastic sheeting in the market mainly be take sealed polyethylene plastic as main, to environment, bring severe contamination, also with its refractory organics, be called as " white pollution ", and itself can discharge pernicious gas, that gives people healthyly brings threat, application number is the production technology that CN02128406.7 discloses a kind of plastic sheeting, it take Biodegradable resin as primary raw material, by processing aid, biodegradation auxiliary agent, dispersing aid, photosensitizer additive mixes according to a certain percentage, be processed under certain conditions plastic sheeting, this plastic sheeting can microbial degradation, there iing under the condition of light degradation speed faster, eliminated the environmental pollution that plastic sheeting brings, but its working condition is indefinite, it is not clear that can equipment and technology reach requirement, can produce get a desired effect cannot guarantee.
Summary of the invention
For the deficiency existing in prior art, the invention provides a kind of plastic film production process.
For realizing object of the present invention, technical scheme of the present invention is as follows:
A plastic film production process, its processing step is as follows:
(1) raw material screening: plastic grain screens through 20～200 object object sieves, and described plastic grain is PLA particle;
(2) melt: the object particle after screening in step (1) is added in reactor, and temperature is controlled at 170 ℃～190 ℃, under the condition stirring, object particle is melted into molten condition;
(3) modification: by the material modified fused solution adding in step (2), and mix under the condition of vacuum stirring, described material modified be the mixture of magnalium hydrotalcite, APP, cobalt powder, its mixed proportion is 3:2:2;
(4) extrude curtain coating: by the mixed melting liquid in step (3) through T-shaped membrana oralis casting machine melt extrusion film;
(5) cooling: by the melt film of extruding in step (4) be close on chill roll, carry out cooling;
(6) sided corona treatment: by the cooling plastic sheeting obtaining in step (5), carry out sided corona treatment through corona treatment;
(7) excision slitter edge batches: the plastic sheeting both sides slitter edge obtaining in step (6) is excised and batch packing.
Above-mentioned a kind of plastic film production process, wherein, in described step (5), described chilling temperature is-2 ℃～0 ℃.
Above-mentioned a kind of plastic film production process, wherein, in described step (4), described T-shaped membrana oralis casting machine is provided with β ray and examines thick device.
Above-mentioned a kind of plastic film production process, wherein, in described step (3), described material modified content is fused solution 2%～5%.
Beneficial effect: the present invention is by the raw material screening to polylactic acid plastic particle, melt, modification, extrude curtain coating, cooling, sided corona treatment and excision slitter edge batch the production technology that seven large steps complete plastic sheeting, make its technique reasonable, succinctly, shortened process greatly, efficiency is high, speed is fast, raw material is selected rationally, cost is lower, capable of being fast degraded, reduce environmental pollution, most importantly on the basis of original performance of plastic film, strengthened its heat resistance, wearability and toughness, in raw material screening, make polylactic acid plastic granular size moderate, the particle that enlarge active surface is conducive to next step melts, and the selection of poly-lactic acid material, can access biodegradation very, reduce environmental pollution, vacuum stirring condition in modification, guaranteed that fused solution is even, fine and close, without bubble, material modified adding makes the heat-resisting of plastic sheeting, wear-resisting and toughness strengthens, especially make it have degradation speed under the condition of light to accelerate adding of cobalt powder, the installation of examining thick device at extrudate flow Yanzhong β ray has guaranteed the automation that plastic sheeting is produced even thickness, in cooling, the control of chilling temperature has guaranteed the flatness on plastic sheeting surface, safety, convenient, reliably, there are very wide market prospects.
The specific embodiment
For technological means, creation characteristic that the present invention is realized, reach object and effect is easy to understand, below in conjunction with the specific embodiment, further set forth the present invention.
embodiment 1
A kind of plastic film production process of the present embodiment, is characterized in that, its processing step is as follows:
(1) raw material screening: plastic grain screens through 80 object object sieves, described plastic grain is PLA particle, polylactic acid plastic granular size is moderate, the particle that enlarge active surface is conducive to next step melts, and the selection of poly-lactic acid material, can access biodegradation very, reduce environmental pollution;
(2) melt: the object particle after screening in step (1) is added in reactor, and temperature is controlled at 170 ℃, under the condition stirring, object particle is melted into molten condition;
(3) modification: by the material modified fused solution adding in step (2), under the condition of vacuum stirring, mix, described material modified be the mixture of magnalium hydrotalcite, APP, cobalt powder, its mixed proportion is 3:2:2, described material modified content is fused solution 2%, and heat-resisting, the wear-resisting and toughness of plastic sheeting is strengthened, and especially makes it have degradation speed under the condition of light to accelerate adding of cobalt powder;
(4) extrude curtain coating: through T-shaped membrana oralis casting machine melt extrusion film, described T-shaped membrana oralis casting machine is provided with β ray and examines thick device by the mixed melting liquid in step (3), guaranteed the automation that plastic sheeting is produced even thickness;
(5) cooling: the melt film of extruding in step (4) is close to and on chill roll, carries out coolingly, and described chilling temperature is-2 ℃, has guaranteed the flatness on plastic sheeting surface;
(6) sided corona treatment: by the cooling plastic sheeting obtaining in step (5), carry out sided corona treatment through corona treatment;
(7) excision slitter edge batches: the plastic sheeting both sides slitter edge obtaining in step (6) is excised and batch packing.
embodiment 2: all the other are identical with described embodiment 1, and difference is, step (1) changes 150 object sieves into, and described in step (3), material modified content is fused solution 3%, and in step (5), described chilling temperature is-1 ℃.
embodiment 3:all the other are identical with described embodiment 1, and difference is, step (1) changes 200 object sieves into, and in step (3), described material modified content is fused solution 5%, and in step (4), described T-shaped membrana oralis casting machine is provided with β ray and examines thick device.
| ? | Embodiment 1 | Embodiment 2 | Embodiment 3 |
| The complete melting time of plastic grain | 50min | 45min | 55min |
| The degradable time of plastic sheeting | 35d | 31d | 28d |
By above-mentioned 3 embodiment, there are in upper table three groups of data known, when plastic grain is controlled at 200 order, particle fusion is fastest, when material modified content is 5%, the degradable shortest time of plastic sheeting.
The present invention is by the raw material screening to polylactic acid plastic particle, melt, modification, extrude curtain coating, cooling, sided corona treatment and excision slitter edge batch the production technology that seven large steps complete plastic sheeting, make its technique reasonable, succinctly, shortened process greatly, efficiency is high, speed is fast, raw material is selected rationally, cost is lower, capable of being fast degraded, reduce environmental pollution, most importantly on the basis of original performance of plastic film, strengthened its heat resistance, wearability and toughness, in raw material screening, make polylactic acid plastic granular size moderate, the particle that enlarge active surface is conducive to next step melts, and the selection of poly-lactic acid material, can access biodegradation very, reduce environmental pollution, vacuum stirring condition in modification, guaranteed that fused solution is even, fine and close, without bubble, material modified adding makes the heat-resisting of plastic sheeting, wear-resisting and toughness strengthens, especially make it have degradation speed under the condition of light to accelerate adding of cobalt powder, the installation of examining thick device at extrudate flow Yanzhong β ray has guaranteed the automation that plastic sheeting is produced even thickness, in cooling, the control of chilling temperature has guaranteed the flatness on plastic sheeting surface, safety, convenient, reliably, there are very wide market prospects.
The foregoing is only embodiments of the invention; not thereby limit the scope of the claims of the present invention; every equivalent structure or conversion of equivalent flow process that utilizes description of the present invention to do; 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 (4)
1. a plastic film production process, is characterized in that, its processing step is as follows:
(1) raw material screening: plastic grain screens through 20～200 object object sieves, and described plastic grain is PLA particle;
(2) melt: the object particle after screening in step (1) is added in reactor, and temperature is controlled at 170 ℃～190 ℃, under the condition stirring, object particle is melted into molten condition;
(3) modification: by the material modified fused solution adding in step (2), and mix under the condition of vacuum stirring, described material modified be the mixture of magnalium hydrotalcite, APP, cobalt powder, its mixed proportion is 3:2:2;
(4) extrude curtain coating: by the mixed melting liquid in step (3) through T-shaped membrana oralis casting machine melt extrusion film;
(5) cooling: by the melt film of extruding in step (4) be close on chill roll, carry out cooling;
(6) sided corona treatment: by the cooling plastic sheeting obtaining in step (5), carry out sided corona treatment through corona treatment;
(7) excision slitter edge batches: the plastic sheeting both sides slitter edge obtaining in step (6) is excised and batch packing.
2. a kind of plastic film production process according to claim 1, is characterized in that, in described step (5), described chilling temperature is-2 ℃～0 ℃.
3. a kind of plastic film production process according to claim 1, is characterized in that, in described step (4), described T-shaped membrana oralis casting machine is provided with β ray and examines thick device.
4. a kind of plastic film production process according to claim 1, is characterized in that, in described step (3), described material modified content is fused solution 2%～5%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310550207.1A CN103612396A (en) | 2013-11-08 | 2013-11-08 | Production process of plastic films |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310550207.1A CN103612396A (en) | 2013-11-08 | 2013-11-08 | Production process of plastic films |
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| CN103612396A true CN103612396A (en) | 2014-03-05 |
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| CN201310550207.1A Pending CN103612396A (en) | 2013-11-08 | 2013-11-08 | Production process of plastic films |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104401010A (en) * | 2014-11-28 | 2015-03-11 | 桐城市福润包装材料有限公司 | Production process of plastic films |
| CN104788913A (en) * | 2015-03-30 | 2015-07-22 | 安徽松泰包装材料有限公司 | PET protective film production process |
| CN108047598A (en) * | 2017-12-17 | 2018-05-18 | 苏州纽东精密制造科技有限公司 | A kind of production technology of plastic film |
| CN109593300A (en) * | 2018-12-17 | 2019-04-09 | 嘉兴彩虹光学膜片科技有限公司 | A kind of plastic film factory formula and its processing technology |
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| US20020077404A1 (en) * | 2000-11-01 | 2002-06-20 | Young-Hwan Yu | Composition of polypropylene resin |
| KR20020062440A (en) * | 2001-01-20 | 2002-07-26 | 민병창 | New specific compound material and method of making it |
| CN101372550A (en) * | 2008-09-27 | 2009-02-25 | 浙江海正生物材料股份有限公司 | Hydrolysis resistant polylactic acid composite material |
| CN102501529A (en) * | 2011-11-18 | 2012-06-20 | 佛山佛塑料科技集团股份有限公司 | Biaxial drawing polylactic acid compound film with barrier property and preparation method thereof |
-
2013
- 2013-11-08 CN CN201310550207.1A patent/CN103612396A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020077404A1 (en) * | 2000-11-01 | 2002-06-20 | Young-Hwan Yu | Composition of polypropylene resin |
| KR20020062440A (en) * | 2001-01-20 | 2002-07-26 | 민병창 | New specific compound material and method of making it |
| CN101372550A (en) * | 2008-09-27 | 2009-02-25 | 浙江海正生物材料股份有限公司 | Hydrolysis resistant polylactic acid composite material |
| CN102501529A (en) * | 2011-11-18 | 2012-06-20 | 佛山佛塑料科技集团股份有限公司 | Biaxial drawing polylactic acid compound film with barrier property and preparation method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104401010A (en) * | 2014-11-28 | 2015-03-11 | 桐城市福润包装材料有限公司 | Production process of plastic films |
| CN104788913A (en) * | 2015-03-30 | 2015-07-22 | 安徽松泰包装材料有限公司 | PET protective film production process |
| CN108047598A (en) * | 2017-12-17 | 2018-05-18 | 苏州纽东精密制造科技有限公司 | A kind of production technology of plastic film |
| CN109593300A (en) * | 2018-12-17 | 2019-04-09 | 嘉兴彩虹光学膜片科技有限公司 | A kind of plastic film factory formula and its processing technology |
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Application publication date: 20140305 |