CN102248729A - Heat-sealing polyvinylidene chloride coating film and manufacture method thereof - Google Patents
Heat-sealing polyvinylidene chloride coating film and manufacture method thereof Download PDFInfo
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- CN102248729A CN102248729A CN2011101190777A CN201110119077A CN102248729A CN 102248729 A CN102248729 A CN 102248729A CN 2011101190777 A CN2011101190777 A CN 2011101190777A CN 201110119077 A CN201110119077 A CN 201110119077A CN 102248729 A CN102248729 A CN 102248729A
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- polyvinylidene chloride
- heat
- coating
- sealing type
- sealing
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- 229920001328 Polyvinylidene chloride Polymers 0.000 title claims abstract description 71
- 239000005033 polyvinylidene chloride Substances 0.000 title claims abstract description 71
- 238000000576 coating method Methods 0.000 title claims abstract description 55
- 239000011248 coating agent Substances 0.000 title claims abstract description 51
- 238000007789 sealing Methods 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 11
- 239000000463 material Substances 0.000 claims abstract description 27
- CHQMHPLRPQMAMX-UHFFFAOYSA-L sodium persulfate Substances [Na+].[Na+].[O-]S(=O)(=O)OOS([O-])(=O)=O CHQMHPLRPQMAMX-UHFFFAOYSA-L 0.000 claims abstract description 13
- 239000004816 latex Substances 0.000 claims abstract description 11
- 229920000126 latex Polymers 0.000 claims abstract description 11
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims abstract description 8
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 8
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000008367 deionised water Substances 0.000 claims abstract description 5
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 5
- 238000001035 drying Methods 0.000 claims abstract description 5
- 239000000839 emulsion Substances 0.000 claims abstract description 3
- 239000002994 raw material Substances 0.000 claims abstract description 3
- 239000010409 thin film Substances 0.000 claims description 26
- 239000004814 polyurethane Substances 0.000 claims description 7
- 229920002635 polyurethane Polymers 0.000 claims description 7
- 235000011194 food seasoning agent Nutrition 0.000 claims description 5
- 238000012986 modification Methods 0.000 claims description 5
- 230000004048 modification Effects 0.000 claims description 5
- -1 polyethylene Polymers 0.000 claims description 4
- 239000004677 Nylon Substances 0.000 claims description 3
- 239000004698 Polyethylene Substances 0.000 claims description 3
- 229920006378 biaxially oriented polypropylene Polymers 0.000 claims description 3
- 239000011127 biaxially oriented polypropylene Substances 0.000 claims description 3
- 229920001778 nylon Polymers 0.000 claims description 3
- 229920000728 polyester Polymers 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 3
- 239000004800 polyvinyl chloride Substances 0.000 claims description 3
- 239000000758 substrate Substances 0.000 claims description 3
- 238000003851 corona treatment Methods 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- 239000002904 solvent Substances 0.000 claims description 2
- WSLDOOZREJYCGB-UHFFFAOYSA-N 1,2-Dichloroethane Chemical group ClCCCl WSLDOOZREJYCGB-UHFFFAOYSA-N 0.000 claims 2
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000007603 infrared drying Methods 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 239000011247 coating layer Substances 0.000 abstract 3
- 239000010410 layer Substances 0.000 abstract 2
- LCPVQAHEFVXVKT-UHFFFAOYSA-N 2-(2,4-difluorophenoxy)pyridin-3-amine Chemical compound NC1=CC=CN=C1OC1=CC=C(F)C=C1F LCPVQAHEFVXVKT-UHFFFAOYSA-N 0.000 abstract 1
- 239000005977 Ethylene Substances 0.000 abstract 1
- 239000010408 film Substances 0.000 description 21
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 18
- 239000012530 fluid Substances 0.000 description 11
- 229920000768 polyamine Polymers 0.000 description 8
- 239000005026 oriented polypropylene Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 229920006225 ethylene-methyl acrylate Polymers 0.000 description 4
- 238000010792 warming Methods 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 3
- 238000011056 performance test Methods 0.000 description 3
- 239000003643 water by type Substances 0.000 description 3
- 241000209094 Oryza Species 0.000 description 2
- 235000007164 Oryza sativa Nutrition 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 235000009566 rice Nutrition 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
Landscapes
- Laminated Bodies (AREA)
- Coating Of Shaped Articles Made Of Macromolecular Substances (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention relates to a heat-sealing polyvinylidene chloride coating film, comprising a base material and a coating layer on a base material surface. A primer layer is arranged between the coating layer and the base material; the coating layer is formed by coating a modified heat-sealing polyvinylidene chloride latex prepared by the invention on the primer layer and drying; and the heat-sealing polyvinylidene chloride latex is prepared from raw materials of, by weight, 1-2 parts of sodium persulfate, 48-52 parts of deionized water, 2-3.5 parts of ethylene, 34.5-39.5 parts of polyvinylidene chloride and 4-5.5 parts of acrylic acid. The manufacture method comprises steps that a polyvinylidene chloride emulsion is first modified to prepare a heat-sealing polyvinylidene chloride latex with good heat-sealing performance, and the heat-sealing polyvinylidene chloride latex prepared by the invention is coated on various base materials by coating equipment, dried and solidified to obtain the heat-sealing polyvinylidene chloride coating film of the invention finally.
Description
Affiliated technical field
The present invention relates to a kind of heat-sealing type polyvinylidene chloride coated thin film and manufacture method thereof, under the prerequisite that keeps former polyvinylidene chloride coated thin film high obstructing performance, improve its heat sealability, solved the low problem of traditional polyvinylidene chloride coated thin film heat seal strength, reduced traditional polyvinylidene chloride coated thin film must with the compound technologies that satisfy the packaging material heat sealability of other heat-sealable material such as un-stretched polypropylene film, reduced packing cost, made the application of polyvinylidene chloride coated thin film more wide.The invention belongs to the novel high polymer material field.
Background technology
In recent years, people are in order to enlarge the range of application of polyvinylidene chloride coated film, polyvinylidene chloride coating emulsion is carried out modification by every possible means, mainly be oxygen resistance and block-water performance in order to improve the polyvinylidene chloride coated film, but these technology can not solve the weak problem of traditional polyvinylidene chloride coated film heat seal strength, for oxygen resistance and the block-water performance of using the polyvinylidene chloride coated film, have to use material to carry out compound with good heat sealability, the corresponding cost that also increased of the increase of compound working procedure, complicated technology and expensive cost cause the user simply just to replace with various aluminizers, have limited the range of application of traditional polyvinylidene chloride coated film greatly.
Summary of the invention
Above-mentioned defective at present traditional polyvinylidene chloride coated film, the problem to be solved in the present invention is: a kind of novel heat-sealing type polyvinylidene chloride coated thin film is provided, and this coated thin film has good heat sealability simultaneously on the basis that keeps traditional polyvinylidene chloride coated thin film excellent barrier properties.In order to solve above technical problem, the invention provides a kind of novel heat-sealing type polyvinylidene chloride coated thin film.
Accordingly, the present invention also provides a kind of manufacture method of novel heat-sealing type polyvinylidene chloride coated thin film.
Heat-sealing type polyvinylidene chloride coated thin film provided by the invention, the dope layer that comprises base material and substrate surface, between dope layer and the base material primer layer is arranged, described dope layer is the coating that is formed after primer layer surface and oven dry by the heat-sealing type polyvinylidene chloride latex-coating that the present invention makes by modification, and described heat-sealing type polyvinylidene chloride latex is mixed with by the raw material that contains following weight content: 1-2 part sodium peroxydisulfate, 48-52 part deionized water, 2-3.5 part ethene, 34.5-39.5 part polyvinylidene chloride, 4-5.5 part acrylic acid; Described base material is any one in Biaxially oriented polypropylene, biaxial tension nylon, biaxial stretching polyester, polyethylene and the polyvinyl chloride; Described primer layer is the coating that aqueous polyurethane or solvent borne polyurethane form.
Described dope layer can also can exist at two faces of base material simultaneously at a face of base material;
The solid content of described heat-sealing type polyvinylidene chloride latex is 48-52%.
The present invention also provides the manufacture method of heat-sealing type polyvinylidene chloride coated thin film, and this method is:
(1) in reactor, adds 48-52 part deionized water, 1-2 part sodium peroxydisulfate, mixing speed 60-100 rev/min, 35-40 ℃ of temperature control.
(2) use constant flow pump to add 2-3.5 part ethene, 34.5-39.5 part polyvinylidene chloride to reactor, adding speed is the 200-300 gram/minute, 40-45 ℃ of reinforced process reaction still temperature, mixing speed 60-100 rev/min.
(3) improve temperature of reaction kettle, be controlled at 65-75 ℃, use constant flow pump to add 4～5.5 parts of acrylic acid, the reinforced constant temperature 30 minutes of finishing to reactor.
(4) be warming up to 85-90 ℃, use the constant flow pump constant speed to add 3.5-4.5 part EMA.Adding speed is the 50-80 gram/minute.
(5) constant temperature is 2 hours, is prepared into the polyvinylidene chloride coating fluid with heat sealability.
(6) base material film is by after the sided corona treatment, with coating apparatus coating polyamine fat primer and oven dry, coating speed be 150-300 rice/minute, bake out temperature is 80-150 ℃, drying mode adopts hot-air seasoning or Far-infrared Heating oven dry, or adopting far infrared and two kinds of formulas of hot-air seasoning simultaneously, coating weight is 0.4-0.6g/m
2
(7) dry behind the above-mentioned polyvinylidene chloride coating fluid that makes of polyamine fat primer face coating with coating apparatus, coating speed be 150-300 rice/minute, bake out temperature is 80-150 ℃, drying mode adopts hot-air seasoning or Far-infrared Heating oven dry, or adopting far infrared and two kinds of formulas of hot-air seasoning simultaneously, coating weight is 2.0-3.0g/m
2
(8) with above-mentioned coated film hardening 36-60 hour, solidification temperature was 40-45 ℃, promptly made heat-sealing type polyvinylidene chloride coated thin film of the present invention.
Described coating process adopts and reverses the roller kiss-type coating method, to solve the adaptability difficult problem to the base material thickness deviation.
Pass through among the present invention the polyvinylidene chloride modification, on the basis that keeps traditional polyvinylidene chloride coated thin film good barrier performance, possesses good heat sealability (partial data sees the following form) simultaneously, enlarged the range of application of polyvinylidene chloride coated thin film, reduce packing cost simultaneously, promoted the development of flexible package industry.
This product and traditional polyvinylidene chloride coated thin film heat sealability contrast table
The specific embodiment
Embodiment one:
48 kilograms of deionized waters are fed in the 200L reactor, add 1.5 kilograms of sodium peroxydisulfates, 60 rev/mins of mixing speeds, 38 ℃ of temperature controls.Use the constant flow pump constant speed to add 2.8 kilograms of ethene, 36 kilograms of polyvinylidene chloride to reactor, adding speed is 200 gram/minute, 40 ℃ of reinforced process reaction still temperature, 60 rev/mins of mixing speeds.Improve temperature of reaction kettle, be controlled at 72 ℃, use the constant flow pump constant speed to add 5 kilograms of acrylic acid, the reinforced constant temperature 30 minutes of finishing to reactor.Be warming up to 88 ℃, use the constant flow pump constant speed to add 4 kilograms of EMAs.Adding speed is 80 gram/minute.Constant temperature 1 hour, 80 rev/mins of mixing speeds promptly are prepared into the polyvinylidene chloride coating fluid with heat sealability, usefulness to be coated.Open ribbon formula coating machine, the OPP base material film is unreeled in coating machine, make bottom-coating with the ethyl acetate solution of polyurethane, oven temperature is controlled at 90 ℃, and machine speed is controlled at 150 meters/minute.After treating the ethyl acetate oven dry, polyamine fat film forming is on OPP base material face.With oil pump coating fluid is got in the 160 line roller grooves, allowed coating fluid in the roller groove, circulate, continue coating at polyamine fat face, 150 meters/minute of applicator roll controls, 120 ℃ of bake out temperatures, coating weight is 2.4g/m
2After solidifying, be heat-sealing polyvinylidene chloride coated film.Heat-obtaining envelope polyvinylidene chloride coated film is done performance test, and heat seal strength is 3.51N/15mm.
Embodiment two:
48 kilograms of deionized waters are fed in the 200L reactor, add 2 kilograms of sodium peroxydisulfates, 100 rev/mins of mixing speeds, 35 ℃ of temperature controls.Use the constant flow pump constant speed to add 2 kilograms of ethene, 39 kilograms of polyvinylidene chloride to reactor, adding speed is 250 gram/minute, 40 ℃ of reinforced process reaction still temperature, 80 rev/mins of mixing speeds.Improve temperature of reaction kettle, be controlled at 65 ℃, use the constant flow pump constant speed to add 4 kilograms of acrylic acid, the reinforced constant temperature 30 minutes of finishing to reactor.Be warming up to 85 ℃, use the constant flow pump constant speed to add 3.5 kilograms of EMAs.Adding speed is 80 gram/minute.Constant temperature 1 hour, 100 rev/mins of mixing speeds promptly are prepared into the polyvinylidene chloride coating fluid with heat sealability, usefulness to be coated.Open ribbon formula coating machine, the OPP base material film is unreeled in coating machine, make bottom-coating with the ethyl acetate solution of polyurethane, oven temperature is controlled at 100 ℃, and machine speed is controlled at 180 meters/minute.After treating the ethyl acetate oven dry, polyamine fat film forming is on OPP base material face.With oil pump coating fluid is got in the 120 line roller grooves, allowed coating fluid in the roller groove, circulate, continue coating at polyamine fat face, 180 meters/minute of applicator roll controls, 125 ℃ of bake out temperatures, coating weight is 2.4g/m
2After solidifying, be heat-sealing polyvinylidene chloride coated film.Heat-obtaining envelope polyvinylidene chloride coated film is done performance test, and heat seal strength is 3.64N/15mm.
Embodiment three:
52 kilograms of deionized waters are fed in the 200L reactor, add 1 kilogram of sodium peroxydisulfate, 80 rev/mins of mixing speeds, 40 ℃ of temperature controls.Use the constant flow pump constant speed to add 3.5 kilograms of ethene, 37 kilograms of polyvinylidene chloride to reactor, adding speed is 250 gram/minute, 35 ℃ of reinforced process reaction still temperature, 100 rev/mins of mixing speeds.Improve temperature of reaction kettle, be controlled at 75 ℃, use the constant flow pump constant speed to add 5.5 kilograms of acrylic acid, the reinforced constant temperature 30 minutes of finishing to reactor.Be warming up to 90 ℃, use the constant flow pump constant speed to add 4.5 kilograms of EMAs.Adding speed is 50 gram/minute.Constant temperature 1 hour, 80 rev/mins of mixing speeds promptly are prepared into the polyvinylidene chloride coating fluid with heat sealability, usefulness to be coated.Open ribbon formula coating machine, the OPP base material film is unreeled in coating machine, make bottom-coating with the ethyl acetate solution of polyurethane, oven temperature is controlled at 110 ℃, and machine speed is controlled at 250 meters/minute.After treating the ethyl acetate oven dry, polyamine fat film forming is on OPP base material face.With oil pump coating fluid is got in the 140 line roller grooves, allowed coating fluid in the roller groove, circulate, continue coating at polyamine fat face, 250 meters/minute of applicator roll controls, 130 ℃ of bake out temperatures, coating weight is 2.4g/m
2After solidifying, be heat-sealing polyvinylidene chloride coated film.Heat-obtaining envelope polyvinylidene chloride coated film is done performance test, and heat seal strength is 3.53N/15mm.
Claims (8)
1. heat-sealing type polyvinylidene chloride coated thin film, the dope layer that comprises base material and substrate surface, primer layer between dope layer and the base material, it is characterized in that: described dope layer is the coating that is formed after primer layer surface and oven dry by the heat-sealing type polyvinylidene chloride latex-coating that the present invention makes by modification, and described heat-sealing type polyvinylidene chloride latex is mixed with by the raw material of following weight content: 1-2 part sodium peroxydisulfate, 48-52 part deionized water, 2-3.5 part ethene, 34.5-39.5 part polyvinylidene chloride, 4-5.5 part acrylic acid; Described base material is any one in Biaxially oriented polypropylene, biaxial tension nylon, biaxial stretching polyester, polyethylene or the polyvinyl chloride; Described primer layer is the coating that aqueous polyurethane or solvent borne polyurethane form.
2. heat-sealing type polyvinylidene chloride coated thin film as claimed in claim 1 is characterized in that: described dope layer can also can exist at two faces of base material simultaneously at a face of base material.
3. heat-sealing type polyvinylidene chloride coated thin film as claimed in claim 1 is characterized in that: the solid content of polyvinylidene chloride emulsion is 48-52% in the described heat-sealing type polyvinylidene chloride latex.
4. the manufacture method of a heat-sealing type polyvinylidene chloride coated thin film is characterized in that:
Base material is carried out sided corona treatment, and described base material is any one in Biaxially oriented polypropylene, biaxial tension nylon, biaxial stretching polyester, polyethylene or the polyvinyl chloride;
At the corona surface precoating primer of described base material and dry, substrate surface forms primer layer;
The heat-sealing type polyvinylidene chloride latex that modification makes is evenly coated described primer layer surface and dried formation heat-sealing type polyvinylidene chloride coating, solidify 36h-60h, obtain heat-sealing type polyvinylidene chloride coated thin film at 40 ℃-45 ℃.
The modified polyvinilidene dichloroethylene latex-coating that described heat-sealing polyvinylidene chloride coating is following composition forms after the drying of described primer layer surface: 1-2 part sodium peroxydisulfate, 48-52 part deionized water, 2-3.5 part ethene, 34.5-39.5 part polyvinylidene chloride, 4-5.5 part acrylic acid.
5. the manufacture method of heat-sealing type polyvinylidene chloride coated thin film as claimed in claim 4 is characterized in that: the coating weight of described heat-sealing type polyvinylidene chloride latex is 2.0-3.0g/m
2
6. the manufacture method of heat-sealing type polyvinylidene chloride coated thin film as claimed in claim 4 is characterized in that: the coating speed of modified polyvinilidene dichloroethylene latex evenly being coated described primer layer is 150m/min-300m/min.
7. the manufacture method of heat-sealing type polyvinylidene chloride coated thin film as claimed in claim 4 is characterized in that: described drying mode is that in hot-air seasoning and the far infrared drying one or both use simultaneously, and described bake out temperature is 80 ℃-150 ℃.
8. the manufacture method of heat-sealing type polyvinylidene chloride coated thin film as claimed in claim 4 is characterized in that: described coating method is for reversing the roller kiss-type coating method.
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| CN 201110119077 CN102248729B (en) | 2011-05-04 | 2011-05-04 | Manufacture method of heat-sealing polyvinylidene chloride coating film |
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| CN 201110119077 CN102248729B (en) | 2011-05-04 | 2011-05-04 | Manufacture method of heat-sealing polyvinylidene chloride coating film |
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| CN102248729B CN102248729B (en) | 2013-08-21 |
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Cited By (4)
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|---|---|---|---|---|
| CN102730307A (en) * | 2012-07-12 | 2012-10-17 | 云南绅博源生物科技有限公司 | Degradable transparent packaging material for cigarettes |
| CN102850866A (en) * | 2012-08-31 | 2013-01-02 | 海南必凯水性涂料有限公司 | High oxygen resistance polyvinylidenechloride emulsion for coating, and preparation method thereof |
| CN103754467A (en) * | 2013-11-30 | 2014-04-30 | 南通宝田包装科技有限公司 | Method for manufacturing repeatedly used packaging bag for cooked food |
| CN109232938A (en) * | 2017-05-18 | 2019-01-18 | 四川高盛包装制品有限公司 | A kind of food-grade antirust polypropylene double-way stretched film and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102850866B (en) * | 2012-08-31 | 2014-10-08 | 海南必凯水性涂料有限公司 | High oxygen resistance polyvinylidenechloride emulsion for coating, and preparation method thereof |
| CN103754467A (en) * | 2013-11-30 | 2014-04-30 | 南通宝田包装科技有限公司 | Method for manufacturing repeatedly used packaging bag for cooked food |
| CN109232938A (en) * | 2017-05-18 | 2019-01-18 | 四川高盛包装制品有限公司 | A kind of food-grade antirust polypropylene double-way stretched film and preparation method thereof |
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| Publication number | Publication date |
|---|---|
| CN102248729B (en) | 2013-08-21 |
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