CN103881277A - Formula and preparation method of PVA (polyvinyl alcohol) thin film aqueous solution - Google Patents
Formula and preparation method of PVA (polyvinyl alcohol) thin film aqueous solution Download PDFInfo
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Abstract
The invention discloses a PVA (polyvinyl alcohol) thin film prepared from the following raw materials in parts by weight: 5000-6000 parts of PVA, 1500-2500 parts of starch, 5-15 parts of a surfactant, 35-45 parts of a plasticizer and 1-10 parts of an anti-sticking agent. Correspondingly, the invention also discloses a preparation method of the PVA thin film. The method comprises the steps of adding 5000-6000 parts of PVA, 1500-2500 parts of starch, 5-15 parts of the surfactant, 35-45 parts of the plasticizer and 1-10 parts of the anti-sticking agent, mixing, heating and stirring to prepare a water-soluble glue with the solid content of 15-25%, then salivating and coating on a steel belt, drying to form a film, stripping from the steel belt, then drying in a drying chamber, and trimming and winding to obtain a finished film. By adopting the formula and preparation method disclosed by the invention, the PVA thin film is low in cost and excellent in performance, and the preparation method is simple in process, low in cost and energy consumption, high in efficiency, and suitable for large-scale production.
Description
Technical field
The present invention relates to water-soluble film technical field, especially the formula of PVA pellicular water solution and preparation method.
Background technology
PVA (polyvinyl alcohol) film has excellent barrier, water-soluble and friendly to environment, is the most successfully one of green material of recent domestic exploitation.It has obtained domestic and international environmental protection authoritative institution and users' generally approval, is more and more being widely used in the fields such as packing, weaving embroidery and water transfer printing brush.For example: agricultural chemicals, chemical fertilizer, dyestuff, sanitising agent, water conditioner, mineral additive, washing composition, gardens nursing are with chemical reagent etc., also can be used as in the packing of the multiple products such as vegetable seed, plant seed bag, clothing packaging bag, food and hospital's washing bag, also can be used for weaving embroidery simultaneously and pay for first on materials and water transfer printing brush and demoulding.
PVA film is the material of a kind of environmental friendliness, excellent combination property, but domestic market PVA film is expensive, complex manufacturing, and production cost is very high.
Summary of the invention
Technical problem to be solved by this invention is, a kind of with low cost but PVA film of excellent performance is provided.
Technical problem to be solved by this invention is also, a kind of preparation method of PVA film is provided, and this preparation method's technique is simple, cost is low, energy consumption is low, efficiency is high, be applicable to scale operation, and end properties excellence.
In order to solve the problems of the technologies described above, the invention provides a kind of PVA film, its raw material by following weight part meter is made:
Polyvinyl alcohol 5000-6000
Starch 1500-2500
Tensio-active agent 5-15
Softening agent 35-45
Release agent 1-10.
As the improvement of such scheme, described PVA film is made up of the raw material of following weight part meter:
Polyvinyl alcohol 5500
Starch 2000
Tensio-active agent 10
Softening agent 40
Release agent 5.
As the improvement of such scheme, described tensio-active agent is emulsifying agent, and described emulsifying agent is tween 80.
As the improvement of such scheme, described release agent is releasing agent, and described releasing agent is dimethyl silicone oil.
As the improvement of such scheme, described starch is Zulkovsky starch; Described softening agent is glycerine.
Accordingly, the present invention also provides a kind of preparation method of PVA film, comprise: add 5000-6000 part polyvinyl alcohol, 1500-2500 part starch, 5-15 part tensio-active agent, 35-45 part softening agent and 1-10 part release agent, Hybrid Heating stirs and makes solid content is 15～25% water-soluble glue, salivation is applied on steel band again, after drying film forming, peel off from steel band, then enter kiln dry after, trimming rolling obtains finished film.
As the improvement of such scheme, the solid content of described water-soluble glue is 18～20%.
As the improvement of such scheme, described steel band is mirror face stainless steel band.
As the improvement of such scheme, described PVA film is made up of the raw material of following weight part meter:
Polyvinyl alcohol 5500
Starch 2000
Tensio-active agent 10
Softening agent 40
Release agent 5.
As the improvement of such scheme, described tensio-active agent is emulsifying agent, and described emulsifying agent is tween 80;
Described release agent is releasing agent, and described releasing agent is dimethyl silicone oil;
Described starch is Zulkovsky starch;
Described softening agent is glycerine.
Implement the present invention, there is following beneficial effect:
The invention provides a kind of PVA film, adopting polyvinyl alcohol and starch is main raw material, add the auxiliary agents such as tensio-active agent, softening agent, release agent, Hybrid Heating stirs and makes solid content is 15～25% water-soluble glue, salivation is applied on steel band again, after drying and forming-film, peel off from steel band, and then drying, trimming are wound into finished film.
Adopt above-mentioned formula and preparation method, its raw material with low cost, can reduce production costs, and this preparation method's technique is simple, efficiency is high, and energy consumption is low, the rim charge producing in production process recycle again, reach zero release, do not produce gas, liquid, solid waste, be applicable to scale operation.
Moreover the PVA film appearance that adopts above-mentioned formula and preparation method to make is good, excellent performance, environment-protecting asepsis is pollution-free, can eliminate white pollution; Tensile strength, tension force etc. are all equal to or are better than conventional plastic film; Lightness is high, good luster; Pliability is high, sense of touch good; Oil resistant, solvent resistance be good, heat sealable, can print; Air transmission coefficient is low, gas barrier property good; Antistatic property is good, not dust suction.
Embodiment
For making the object, technical solutions and advantages of the present invention clearer, below the present invention is described in further detail.
The invention provides a kind of PVA film, its raw material by following weight part meter is made:
Polyvinyl alcohol 5000-6000
Starch 1500-2500
Tensio-active agent 5-15
Softening agent 35-45
Release agent 1-10.
Preferably, described PVA film is made up of the raw material of following weight part meter:
Polyvinyl alcohol 5500
Starch 2000
Tensio-active agent 10
Softening agent 40
Release agent 5.
Wherein, described polyvinyl alcohol fashionablely will first add appropriate water dissolution adding, and then mixes with starch, tensio-active agent, softening agent and release agent.The ratio of the consumption of polyethylene alcohol and water is 5000-6000:20000-35000.
Described starch is Zulkovsky starch, the Zulkovsky starch of preferentially selecting rice, corn, millet, potato, Ipomoea batatas to make.Better, described starch is selected sweet potato starch, and the particle of sweet potato starch is thicker, and the glued membrane that wrap outside easily breaks in the time being hydrolyzed, easily dry.
Described softening agent is glycerine, but is not limited to this.
Described tensio-active agent is emulsifying agent, and described emulsifying agent is tween 80, but is not limited to this.The present invention adds tween 80, in the time that it is dispersed in polyvinyl alcohol and starch surperficial, can stop the small droplets of disperse phase to condense mutually, makes the emulsion that forms more stable.
Described release agent is releasing agent, and described releasing agent is dimethyl silicone oil, but is not limited to this.
Accordingly, the present invention also provides a kind of preparation method of PVA film, comprise: add 5000-6000 part polyvinyl alcohol, 1500-2500 part starch, 5-15 part tensio-active agent, 35-45 part softening agent and 1-10 part release agent, Hybrid Heating stirs and makes solid content is 15～25% water-soluble glue, salivation is applied on steel band again, after drying film forming, peel off from steel band, then enter kiln dry after, trimming rolling obtains finished film.
As the present invention's one preferred embodiment, described preparation method comprises: add 5500 parts of polyvinyl alcohol, 2000 parts of starch, 10 parts of tensio-active agents, 40 parts of softening agent and 5 parts of release agents, being mixed and heated to 70-90 ℃ of stirring, to make solid content be 18～20% water-soluble glue, salivation is applied on mirror face stainless steel band again, drying and forming-film at the temperature of 100-115 ℃, peel off from steel band again, then enter kiln dry after, the temperature of kiln is controlled at 120-180 ℃, and trimming rolling obtains finished film.
Wherein, described polyvinyl alcohol fashionablely will first add appropriate water dissolution adding, and then mixes with starch, tensio-active agent, softening agent and release agent.The ratio of the consumption of polyethylene alcohol and water is 5000-6000:20000-35000.
Described starch is Zulkovsky starch, the Zulkovsky starch of preferentially selecting rice, corn, millet, potato, Ipomoea batatas to make.Better, described starch is selected sweet potato starch, and the particle of sweet potato starch is thicker, and the glued membrane that wrap outside easily breaks in the time being hydrolyzed, easily dry.
Described softening agent is glycerine, but is not limited to this.
Described tensio-active agent is emulsifying agent, and described emulsifying agent is tween 80, but is not limited to this.The present invention adds tween 80, in the time that it is dispersed in polyvinyl alcohol and starch surperficial, can stop the small droplets of disperse phase to condense mutually, makes the emulsion that forms more stable.
Described release agent is releasing agent, and described releasing agent is dimethyl silicone oil, but is not limited to this.
The present invention is to produce 8000 tons of PVA films per year as example, and the raw material of its consumption is roughly as follows: 5500 tons of polyvinyl alcohol pellets, 2000 tons of Zulkovsky starches, 40 tons of glycerine, 10 tons of tween 80s, 5 tons of dimethyl silicone oils.Because raw material of the present invention only comprises polyvinyl alcohol pellet, Zulkovsky starch, glycerine, tween 80 and dimethyl silicone oil, the cost of above-mentioned raw materials is lower, and adopts the raw material of 7555 tons to get final product the finished product of 8000 tons of outputs, and efficiency is high.
To produce 8000 tons of calculating of PVA film per year, main energy consumption is as follows:
| Numbering | The energy or resource name | Consumption |
| 1 | Electric power | 5,760,000 kwh |
| 2 | Coal | 0 |
| 3 | Oil | 0 |
| 4 | Sweet natural gas | 0 |
| 5 | Water | 35,000 tons |
| 6 | Other | 0 |
To produce 8000 tons of calculating of PVA film per year, main discharge situation is as follows:
| Numbering | Discharged waste kind or title | Quantity discharged |
| 1 | Gaseous waste | 0 |
| 2 | Liquid wastes | 0 |
| 3 | Solid waste | 0 |
Detect the PVA film that above-mentioned formula and method make, result is as follows:
| Project | Feature |
| Outward appearance | Outward appearance is essentially smooth smooth, exists without significant depressions, convex epirelief, bubble, impurity, ripple, defects i.e.cracks |
| Impurity | Diameter≤0.8mm, quantity≤25/square metre |
| Bubble | Diameter≤1.0mm, quantity≤25/square metre |
| Tensile strength | 45-63 Mpa |
| Elongation at break | 220-400% |
| Right-angle tearing power | >100KN/m |
| Water soluble characteristic | Start to dissolve < 25 seconds; Dissolve completely and < after within 20 minutes, dissolving completely, there is no thread sheet impurity (25 ℃ of 6cm × 6cm sheet tests of measuring water temperature) |
| Shelf-life | 2 years |
To sum up, adopt above-mentioned formula and preparation method, its raw material with low cost, can reduce production costs, and this preparation method's technique is simple, efficiency is high, energy consumption is low, and the rim charge producing in production process recycle again, reaches zero release, do not produce gas, liquid, solid waste, be applicable to scale operation.
The PVA film appearance that adopts above-mentioned formula and preparation method to make is good, excellent performance, and environment-protecting asepsis is pollution-free, can eliminate white pollution; Tensile strength, tension force etc. are all equal to or are better than conventional plastic film; Lightness is high, good luster; Pliability is high, sense of touch good; Oil resistant, solvent resistance be good, heat sealable, can print; Air transmission coefficient is low, gas barrier property good; Antistatic property is good, not dust suction.
Further set forth the present invention with specific embodiment below
Embodiment 1
Mix, make polyvinyl alcohol to dissolve 5500 parts of polyvinyl alcohol and 20000 parts of water, add again 2000 parts of starch, 10 parts of tween 80s, 40 parts of glycerine and 5 parts of dimethyl silicone oils, being mixed and heated to 70 ℃ of stirrings, to make solid content be 18% water-soluble glue, under the effect of scraper, salivate and be applied on mirror face stainless steel band again, at the temperature of 100 ℃, after drying and forming-film, peel off from steel band, then enter kiln dry, the temperature of kiln is controlled at 120 ℃, and trimming rolling obtains finished film.
Embodiment 2
Mix, make polyvinyl alcohol to dissolve 5000 parts of polyvinyl alcohol and 27000 parts of water, add again 1500 parts of starch, 6 parts of tween 80s, 35 parts of glycerine and 2 parts of dimethyl silicone oils, being mixed and heated to 75 ℃ of stirrings, to make solid content be 16% water-soluble glue, under the effect of scraper, salivate and be applied on mirror face stainless steel band again, at the temperature of 110 ℃, after drying and forming-film, peel off from steel band, then enter kiln dry, the temperature of kiln is controlled at 130 ℃, and trimming rolling obtains finished film.
Embodiment 3
Mix, make polyvinyl alcohol to dissolve 5300 parts of polyvinyl alcohol and 30000 parts of water, add again 2200 parts of starch, 8 parts of tween 80s, 42 parts of glycerine and 6 parts of dimethyl silicone oils, being mixed and heated to 80 ℃ of stirrings, to make solid content be 20% water-soluble glue, under the effect of scraper, salivate and be applied on mirror face stainless steel band again, at the temperature of 105 ℃, after drying and forming-film, peel off from steel band, then enter kiln dry, the temperature of kiln is controlled at 150 ℃, and trimming rolling obtains finished film.
Embodiment 4
Mix, make polyvinyl alcohol to dissolve 5600 parts of polyvinyl alcohol and 35000 parts of water, add again 2500 parts of starch, 15 parts of tween 80s, 45 parts of glycerine and 10 parts of dimethyl silicone oils, being mixed and heated to 90 ℃ of stirrings, to make solid content be 22% water-soluble glue, under the effect of scraper, salivate and be applied on mirror face stainless steel band again, at the temperature of 115 ℃, after drying and forming-film, peel off from steel band, then enter kiln dry, the temperature of kiln is controlled at 170 ℃, and trimming rolling obtains finished film.
Embodiment 5
Mix, make polyvinyl alcohol to dissolve 6000 parts of polyvinyl alcohol and 34000 parts of water, add again 1800 parts of starch, 12 parts of tween 80s, 38 parts of glycerine and 7 parts of dimethyl silicone oils, being mixed and heated to 75 ℃ of stirrings, to make solid content be 16% water-soluble glue, under the effect of scraper, salivate and be applied on mirror face stainless steel band again, at the temperature of 100 ℃, after drying and forming-film, peel off from steel band, then enter kiln dry, the temperature of kiln is controlled at 180 ℃, and trimming rolling obtains finished film.
Embodiment 6
Mix, make polyvinyl alcohol to dissolve 5800 parts of polyvinyl alcohol and 28000 parts of water, add again 2000 parts of starch, 10 parts of tween 80s, 40 parts of glycerine and 5 parts of dimethyl silicone oils, being mixed and heated to 80 ℃ of stirrings, to make solid content be 20% water-soluble glue, under the effect of scraper, salivate and be applied on mirror face stainless steel band again, at the temperature of 110 ℃, after drying and forming-film, peel off from steel band, then enter kiln dry, the temperature of kiln is controlled at 140 ℃, and trimming rolling obtains finished film.
Embodiment 7
Mix, make polyvinyl alcohol to dissolve 5100 parts of polyvinyl alcohol and 32000 parts of water, add again 1700 parts of starch, 9 parts of tween 80s, 43 parts of glycerine and 9 parts of dimethyl silicone oils, being mixed and heated to 85 ℃ of stirrings, to make solid content be 22% water-soluble glue, under the effect of scraper, salivate and be applied on mirror face stainless steel band again, at the temperature of 105 ℃, after drying and forming-film, peel off from steel band, then enter kiln dry, the temperature of kiln is controlled at 135 ℃, and trimming rolling obtains finished film.
Embodiment 8
Mix, make polyvinyl alcohol to dissolve 5500 parts of polyvinyl alcohol and 35000 parts of water, add again 2000 parts of starch, 10 parts of tween 80s, 40 parts of glycerine and 5 parts of dimethyl silicone oils, being mixed and heated to 70 ℃ of stirrings, to make solid content be 20% water-soluble glue, under the effect of scraper, salivate and be applied on mirror face stainless steel band again, at the temperature of 115 ℃, after drying and forming-film, peel off from steel band, then enter kiln dry, the temperature of kiln is controlled at 160 ℃, and trimming rolling obtains finished film.
Embodiment 1-8 is carried out to technology for detection, and result is as follows:
Above disclosed is only preferred embodiment of the present invention, certainly can not limit with this interest field of the present invention, and the equivalent variations of therefore doing according to the claims in the present invention, still belongs to the scope that the present invention is contained.
Claims (10)
1. a PVA film, is characterized in that, its raw material by following weight part meter is made:
Polyvinyl alcohol 5000-6000
Starch 1500-2500
Tensio-active agent 5-15
Softening agent 35-45
Release agent 1-10.
2. PVA film as claimed in claim 1, is characterized in that, described PVA film is made up of the raw material of following weight part meter:
Polyvinyl alcohol 5500
Starch 2000
Tensio-active agent 10
Softening agent 40
Release agent 5.
3. PVA film as claimed in claim 1 or 2, is characterized in that, described tensio-active agent is emulsifying agent, and described emulsifying agent is tween 80.
4. PVA film as claimed in claim 1 or 2, is characterized in that, described release agent is releasing agent, and described releasing agent is dimethyl silicone oil.
5. PVA film as claimed in claim 1 or 2, is characterized in that, described starch is Zulkovsky starch; Described softening agent is glycerine.
6. the preparation method of a PVA film, it is characterized in that, comprise: add 5000-6000 part polyvinyl alcohol, 1500-2500 part starch, 5-15 part tensio-active agent, 35-45 part softening agent and 1-10 part release agent, Hybrid Heating stirs and makes solid content is 15～25% water-soluble glue, salivation is applied on steel band again, after drying film forming, peel off from steel band, then enter kiln dry after, trimming rolling obtains finished film.
7. the preparation method of PVA film as claimed in claim 6, is characterized in that, the solid content of described water-soluble glue is 18～20%.
8. the preparation method of PVA film as claimed in claim 6, is characterized in that, described steel band is mirror face stainless steel band.
9. the preparation method of PVA film as claimed in claim 6, is characterized in that, described PVA film is made up of the raw material of following weight part meter:
Polyvinyl alcohol 5500
Starch 2000
Tensio-active agent 10
Softening agent 40
Release agent 5.
10. the preparation method of PVA film as claimed in claim 6, is characterized in that, described tensio-active agent is emulsifying agent, and described emulsifying agent is tween 80;
Described release agent is releasing agent, and described releasing agent is dimethyl silicone oil;
Described starch is Zulkovsky starch;
Described softening agent is glycerine.
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| CN201410102315.7A CN103881277A (en) | 2014-03-19 | 2014-03-19 | Formula and preparation method of PVA (polyvinyl alcohol) thin film aqueous solution |
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| CN201410102315.7A CN103881277A (en) | 2014-03-19 | 2014-03-19 | Formula and preparation method of PVA (polyvinyl alcohol) thin film aqueous solution |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104788734A (en) * | 2015-04-23 | 2015-07-22 | 福州大学 | Composite modifier for starch/polyvinyl alcohol composite material |
| CN104999822A (en) * | 2015-07-02 | 2015-10-28 | 嘉善宏瑞包装材料有限公司 | Preparation method of PVA water transfer printing membrane |
| CN105038054A (en) * | 2015-07-02 | 2015-11-11 | 嘉善宏瑞包装材料有限公司 | Water transfer membrane |
| CN105437691A (en) * | 2015-12-04 | 2016-03-30 | 辽宁本特耐科技发展有限公司 | Asphalt base pre-paved waterproof roll with protective bonding layer |
| CN105644091A (en) * | 2015-12-29 | 2016-06-08 | 秦皇岛市地维建材有限公司 | Preparation method of TPO crossed compound sheet self-adhesion waterproof coiled material |
| CN106182368A (en) * | 2016-07-10 | 2016-12-07 | 李金平 | A kind of environment-friendly type releasing agent |
| CN108276713A (en) * | 2017-01-06 | 2018-07-13 | 长沙市望城区金山纸业开发有限公司 | A kind of environmentally-friendly plastic wrapping paper |
| CN110540726A (en) * | 2019-09-19 | 2019-12-06 | 安徽钢铮机电有限公司 | Resin anchoring agent packaging composite film capable of being rapidly dissolved |
| CN110551352A (en) * | 2019-10-22 | 2019-12-10 | 陈祥海 | simulated biological film and preparation method and application thereof |
| CN110861438A (en) * | 2019-11-12 | 2020-03-06 | 东莞市鸿欣源科技有限公司 | Printing and coating process for surface pattern of solid chemical material |
| CN111484696A (en) * | 2020-05-12 | 2020-08-04 | 周栋 | Plastic packaging film for producing washing condensation beads and preparation method and application thereof |
| CN114525699A (en) * | 2022-03-09 | 2022-05-24 | 台山市晟丰新材料有限公司 | PVA coating liquid, PVA paper-plastic composite material and preparation method thereof |
| CN115246974A (en) * | 2021-04-28 | 2022-10-28 | 肇庆方兴包装材料有限公司 | Composite polyvinyl alcohol film and preparation process thereof |
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| CN1363628A (en) * | 2002-01-16 | 2002-08-14 | 郝喜海 | Method for regulating dissolving speed of water-soluble film |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104788734B (en) * | 2015-04-23 | 2017-03-08 | 福州大学 | A kind of composite modifier of PE/Starch alcohol composite |
| CN104788734A (en) * | 2015-04-23 | 2015-07-22 | 福州大学 | Composite modifier for starch/polyvinyl alcohol composite material |
| CN104999822A (en) * | 2015-07-02 | 2015-10-28 | 嘉善宏瑞包装材料有限公司 | Preparation method of PVA water transfer printing membrane |
| CN105038054A (en) * | 2015-07-02 | 2015-11-11 | 嘉善宏瑞包装材料有限公司 | Water transfer membrane |
| CN105038054B (en) * | 2015-07-02 | 2017-11-24 | 嘉善宏瑞包装材料有限公司 | Water transfer printing film |
| CN104999822B (en) * | 2015-07-02 | 2017-03-08 | 嘉善宏瑞包装材料有限公司 | The preparation method of PVA water transfer printing film |
| CN105437691A (en) * | 2015-12-04 | 2016-03-30 | 辽宁本特耐科技发展有限公司 | Asphalt base pre-paved waterproof roll with protective bonding layer |
| CN105644091A (en) * | 2015-12-29 | 2016-06-08 | 秦皇岛市地维建材有限公司 | Preparation method of TPO crossed compound sheet self-adhesion waterproof coiled material |
| CN106182368A (en) * | 2016-07-10 | 2016-12-07 | 李金平 | A kind of environment-friendly type releasing agent |
| CN108276713A (en) * | 2017-01-06 | 2018-07-13 | 长沙市望城区金山纸业开发有限公司 | A kind of environmentally-friendly plastic wrapping paper |
| CN110540726A (en) * | 2019-09-19 | 2019-12-06 | 安徽钢铮机电有限公司 | Resin anchoring agent packaging composite film capable of being rapidly dissolved |
| CN110551352A (en) * | 2019-10-22 | 2019-12-10 | 陈祥海 | simulated biological film and preparation method and application thereof |
| CN110861438A (en) * | 2019-11-12 | 2020-03-06 | 东莞市鸿欣源科技有限公司 | Printing and coating process for surface pattern of solid chemical material |
| CN111484696A (en) * | 2020-05-12 | 2020-08-04 | 周栋 | Plastic packaging film for producing washing condensation beads and preparation method and application thereof |
| CN111484696B (en) * | 2020-05-12 | 2023-04-14 | 武汉超好生物科技股份有限公司 | Plastic packaging film for producing washing coagulated beads and preparation method and application thereof |
| CN115246974A (en) * | 2021-04-28 | 2022-10-28 | 肇庆方兴包装材料有限公司 | Composite polyvinyl alcohol film and preparation process thereof |
| CN114525699A (en) * | 2022-03-09 | 2022-05-24 | 台山市晟丰新材料有限公司 | PVA coating liquid, PVA paper-plastic composite material and preparation method thereof |
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