CN104594118A - Waterproof coating used for paper product - Google Patents
Waterproof coating used for paper product Download PDFInfo
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- CN104594118A CN104594118A CN201510007377.4A CN201510007377A CN104594118A CN 104594118 A CN104594118 A CN 104594118A CN 201510007377 A CN201510007377 A CN 201510007377A CN 104594118 A CN104594118 A CN 104594118A
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Abstract
The invention discloses a waterproof coating used for a paper product. The formula comprises two waterproof function components with synergistic effects, namely (1) macromolecular silicone oil emulsion accounting for 2%-10% of the total mass of the coating, and (2) nano wax emulsion accounting for 1%-10% of the total mass of the coating. The macromolecular silicone oil emulsion is oil-in-water emulsion prepared from polysiloxane with the molecular weight not lower than 1000, a surfactant and water. The nano wax emulsion is an aqueous dispersed solute with the grain diameter of 50nm-1000nm, which is prepared from natural wax and/or synthetic wax, a surfactant and water. A silicone oil-nano composite layer is formed in the outer surface of a paper product by the waterproof coating so that the excellent waterproof effect and transparency are generated. The waterproof coating has stable performances, can be manually coated and also can be online coated and applied to the outermost layer of a presswork by a printing machine or offline coated and applied to the outermost layer of the presswork by a glazing machine; and the operation is simple, and the damages to oil ink of the inner layer and paper sheets, caused by the water, can be effectively prevented. The coated presswork has an ultrahigh waterproof performance, is not wetted and damaged when directly contacted with the water for more than 8 hours, and keeps the good transparency.
Description
Technical field
The present invention relates to a kind of water-repellent paint for paper products.Be mainly used in printed matter made of paper, special paper package product.Can be used alone, or be applied to ink pellet surface as oil polish.
Background technology
Main material at present for commodity packaging is still paper products, comprises paper, cardboard, carton.Compared to other materials such as plastics, paper printed matter has cheap and easy to get, prints easy, and the characteristic of the multiple excellence such as environmental protection.But the poor shortcoming of water proofing property also greatly limit paper printed matter application in a lot of fields.Particularly those occasions easily contacted with water.Product after packing for preventing papery is by water destruct; people adopt in two ways; namely outer plastic film coated or oil polish is coated in the outer surface of paper products packaging by the mode of online or independent printing in paper products packaging, to play protection paper product or to reconcile the effect of printing effect.But plastic film coated cost is higher, and non-degradable reclaims, and easily causes environmental pollution.
Oil polish is a kind of common print post-processing technology, and the process of oil polish is simple, with low cost.Oil polish is roughly the same with the composition of ink, therefore can not affect degraded or the recovery of paper printed matter, is a kind of desirable plastic film coated alternative means.But current oil polish does not also reach the requirement of people in water proofing property.Through finding the literature search of prior art, " Novel oil polishing of a kind of Gao Guang, high conglutination-resistance, anti-wear performance " (publication number: CN101798776A) invented by people such as Sun Fuxia, benzene-propyl-organosilicon the copolymer emulsion with nucleocapsid structure is adopted to be oil polish prepared by main body, although its water proofing property is better than common polyacrylic gloss oil, but the benzene of nucleocapsid structure-propyl-organosilicon copolymer emulsion complicated process of preparation, cost is higher, and water resistance be still not enough to replace plastic film coated.
Often have in water paint and use silicone oil composition.Such as CN 101967341 reports the wetting agent using silicone oil as coating.But wetting agent silicone oil can not improve water proofing property.
Moreover existing oil polish also to there is a problem be exactly that the transparency is short of to some extent, after coating existing gloss oil, the word in packaging and figure are not very saturating due to the existence of gloss oil, have influence on visual effect.
Summary of the invention
The invention discloses a kind of water-repellent paint for paper products, its object is to effectively to overcome coating water-proof poor performance and transparent slightly poor drawback in prior art, adopt the present invention fill a prescription preparation coating not only there is superelevation water proofing property, ensure that paper products are having the use under water condition, and also have the good transparency and technique is simple, with low cost, degraded or the recovery that can not affect paper printed matter.
Thinking of the present invention is by adding hydrophobic polymeric in coating simultaneously, and dewatering nano structure component and suitable proportioning both controlling.Make coating after the drying, hydrophobic polymeric and dewatering nano structure energy Spontaneous migration, to coating top, form composite construction, produce excellent hydrophobic effect and the transparency of excellence.In order to ensure the generation of described composite construction, the present invention adopts the additive of wax emulsion as coating of macromolecule silicone oil work and suitable nanoscale.
Technical problem to be solved by this invention can be achieved through the following technical solutions:
A kind of water-repellent paint for paper products, it is characterized in that: containing two kinds of synergy water-proof function compositions, namely (1) accounts for the macromolecule silicone oil emulsion of coating gross mass 2-10%, and (2) account for the nanometer paraffin wax emulsion of coating gross mass 1-10%, all the other are for be mixed with oil polish by acrylic resin soln, emulsion acrylic resin, defoamer, levelling agent, isopropyl alcohol and water; After the coating of this water-repellent paint, silicone oil is mainly distributed in described oil polish surface, and nanometer paraffin wax can be spaced in the mode exposing silicone oil surface 5 ~ 100nm, leaves 0 ~ 50nm space between described nanometer paraffin wax.
In a preferred embodiment of the invention, described macromolecule silicone oil emulsion refers to by siloxanes, the O/w emulsion that surfactant and water are prepared from.
In a preferred embodiment of the invention, formula of wax emulsion and preparation method thereof is as follows: in a reaction vessel, add wax, surfactant, water and other additives, pass through means THE ADIABATIC SHEAR IN emulsification certain hours such as stirring, ultrasonic in a heated condition, then cool and filter.
In a preferred embodiment of the invention, described macromolecule silicone oil emulsion is the polysiloxanes of molecular weight between 5000 to 10 ten thousand.
In a preferred embodiment of the invention, described nanometer paraffin wax emulsion is the aqueous liquid dispersion of particle diameter at 50-200nm.
In a preferred embodiment of the invention, the mass ratio between described macromolecule silicone oil emulsion and nanometer paraffin wax emulsion is between 5:1 to 1:5.
Coating of the present invention can form silicone oil-nanometer composite layer at paper products outer surface, produces excellent waterproof effect.Water-repellent paint properties of product of the present invention are stablized, can manual application, also can be put on the outermost layer of printed matter by printing machine online or the coating of polisher off-line, simple to operate, can the injury of the internal layer ink of effectively anti-sealing and paper.Printed matter after coating has superelevation water proofing property, directly contacts do not soaked injury in more than 8 hours with water.
Water-repellent paint prepared by the present invention, can be put on the outermost layer of printed matter, be used for protecting printed layers to have the very high transparency due to it simultaneously, also promote to some extent the visual effect of printing by printing machine online or the coating of polisher off-line.
The present invention is used for the water-repellent paint of papery, have employed the method for adding functional component in existing oil polish product, paper printed matter surface formed the watertight composition that is made up of silicone oil and wax especially wax can float on the face of silicone oil, make it to produce good hydrophobic effect, there is the very high transparency simultaneously.
The injury of the internal layer ink of effective anti-sealing and paper, not only simple to operate, properties of product are stablized, and there is superelevation water proofing property, after waterproof printing gloss oil the present invention prepared is used for paper printed matter, directly contact with water and do not soaked injury in more than 8 hours, be applicable to most water lustering oil products that modification is conventional at present; Printability and the transparency of the oil polish obtained are unaffected, and water proofing property is but greatly improved, and can replace plastic film coated in numerous occasion, have huge application potential.
Accompanying drawing explanation
Fig. 1 is the surface microscopic schematic diagram after embodiment 1 applies.
Fig. 2 is the surface microscopic schematic diagram after embodiment 2 applies.
Fig. 3 is the surface microscopic schematic diagram after embodiment 3 applies.
Detailed description of the invention
Following examples are only limitted to explanation of the invention, do not form limiting to the claimed invention.
Embodiment 1
For a water-repellent paint for paper products, be prepared from by following methods:
The first step:
By acrylic resin soln (resistance to 362U of a specified duration, Rhodia) 200g, emulsion acrylic resin (
aC-261, Dow Chemical) 500g, defoamer 10g, levelling agent 10g, isopropyl alcohol 100g, and water 180g mixes, and prepares common oil polish;
Second step: the preparation of macromolecule silicone oil emulsion
By 30 grams of alkylphenol polyoxyethylene OP-7,20g sorbitan monooleate polyoxyethylene ether Tween80, add after 300 ml waters in reactor, stir (400r/min) while be warming up to 85 DEG C, after arriving temperature, Keep agitation is after 10 minutes, add 70 grams of octamethylcy-clotetrasiloxane D4 and continue stirring 15 minutes, then the sodium hydroxide solution 10mL adding 1mol/mL starts polymerisation.Constant temperature Keep agitation 2 hours, reaction terminates rear dropping 5mol/mL acetum until the pH of emulsion is 7;
3rd step: the preparation of nanometer paraffin wax emulsion
400 grams, Tissuemat E PEW-10 (Ningbo Fu Mei Chemical Co., Ltd.) are added in a high temperature high pressure enclosed reactor, 60g sorbitan monooleate polyoxyethylene ether Tween 80,1000 ml waters, 3 grams of NaOH, by stirring (100r/min) emulsification 1 hour under 130 degrees celsius, then cooling and filtering.
4th step: add macromolecule silicone oil emulsion 100g prepared by second step in the oil polish of the 1000g prepared to the first step, and nanometer paraffin wax emulsion 100g prepared by the 3rd step, prepare the water-repellent paint for paper products after mixing.
The common oil polish that in this example, the first step obtains, under the condition of the online glazing of gravure, its paper printed matter obviously soaks injury directly contacting 1 hour namely produce with water.And under the condition of the online glazing of gravure, being coated in printing white board (paper size grams is 300 grams) through the water-repellent paint for paper products of first, second, third and fourth step preparation, coating thickness is 10g/m
2, infrared heating is dried or is passed through scanning electron microscopic observation after naturally drying.See Fig. 1, on cardboard 4, silicone oil 1 floats on oil polish 2 surface, and nanometer paraffin wax 3 can be spaced in the mode exposing the surperficial 20nm of silicone oil 1, leaves 10nm space between nanometer paraffin wax 3.
Above-mentioned cardboard 4 at normal temperatures surface drips 1ml water, and same position supplements and drips 1ml water before water droplet drying, and so repeat, after ensureing that cardboard and aqueous water continue directly to contact 8 hours, observation cardboard drips and locates back side no-watermark;
In this example, oil polish coating is completely transparent, is coated on non-whitening on printed patterns.
Embodiment 2
The first step: identical with the first step described in embodiment 1;
Second step: the preparation of macromolecule silicone oil emulsion
By 40g sorbitan monooleate polyoxyethylene ether Tween 60, add after 300 ml waters in reactor, stir (400r/min) while be warming up to 85 DEG C, after arriving temperature, Keep agitation is after 10 minutes, add 80 grams of octamethylcy-clotetrasiloxane D4 and continue stirring 15 minutes, then the ammonia spirit 10mL adding 3mol/mL starts polymerisation.Constant temperature Keep agitation 2 hours, reaction terminates rear dropping 5mol/mL acetum until the pH of emulsion is 7;
3rd step: the preparation of nanometer paraffin wax emulsion
400 grams, Tissuemat E PEW-10 (Ningbo Fu Mei Chemical Co., Ltd.) are added in a high temperature high pressure enclosed reactor, 30g sorbitan monooleate polyoxyethylene ether Tween 20,1000 ml waters, 2 grams of NaOH, by stirring (100r/min) emulsification 1 hour under 130 degrees celsius, then cooling and filtering.
4th step: add macromolecule silicone oil emulsion 50g prepared by second step in the oil polish of the 880g prepared to the first step, and nanometer paraffin wax emulsion 100g prepared by the 3rd step, prepare the water-repellent paint for paper products after mixing.
The common oil polish that in this example, the first step obtains, under the condition of the online glazing of gravure, its paper printed matter obviously soaks injury directly contacting 1 hour namely produce with water.And under the condition of the online glazing of gravure, being coated in printing white board (paper size grams is 300 grams) through the water-repellent paint for paper products of first, second, third and fourth step preparation, coating thickness is 12g/m
2, infrared heating is dried or is passed through scanning electron microscopic observation after naturally drying.See Fig. 2, on cardboard 4, silicone oil 1 floats on oil polish 2 surface, and nanometer paraffin wax 3 can be spaced in the mode exposing silicone oil 1 surface about 50nm, leaves about 5nm space between nanometer paraffin wax 3.
Above-mentioned cardboard 4 at normal temperatures surface drips 1ml water, and same position supplements and drips 1ml water before water droplet drying, and so repeat, after ensureing that cardboard and aqueous water continue directly to contact 12 hours, observation cardboard drips and locates back side no-watermark;
In this example, oil polish coating is completely transparent, is coated on non-whitening on printed patterns.
Embodiment 3
The first step: identical with the first step described in embodiment 2;
Second step: identical with the first step described in embodiment 2;
3rd step: identical with the first step described in embodiment 2; ;
4th step: add macromolecule silicone oil emulsion 100g prepared by second step in the oil polish of the 890g prepared to the first step, and nanometer paraffin wax emulsion 20g prepared by the 3rd step, prepare the water-repellent paint for paper products after mixing.
The common oil polish that in this example, the first step obtains, under the condition of the online glazing of gravure, its paper printed matter obviously soaks injury directly contacting 1 hour namely produce with water.And under the condition of the online glazing of gravure, being coated in printing white board (paper size grams is 300 grams) through the water-repellent paint for paper products of first, second, third and fourth step preparation, coating thickness is 12g/m
2, infrared heating is dried or is passed through scanning electron microscopic observation after naturally drying.See Fig. 3, on cardboard 4, silicone oil 1 floats on oil polish 2 surface, and nanometer paraffin wax 3 can be spaced in the mode exposing silicone oil 1 surface about 10nm, leaves about 10nm space between nanometer paraffin wax 3.
Above-mentioned cardboard 4 at normal temperatures surface drips 1ml water, and same position supplements and drips 1ml water before water droplet drying, and so repeat, after ensureing that cardboard and aqueous water continue directly to contact 6 hours, observation cardboard drips and locates back side no-watermark;
In this example, oil polish coating is completely transparent, is coated on non-whitening on printed patterns.
Claims (6)
1. the water-repellent paint for paper products, it is characterized in that: containing two kinds of synergy water-proof function compositions, namely (1) accounts for the macromolecule silicone oil emulsion of coating gross mass 2-10%, and (2) account for the nanometer paraffin wax emulsion of coating gross mass 1-10%, all the other are for be mixed with oil polish by acrylic resin soln, emulsion acrylic resin, defoamer, levelling agent, isopropyl alcohol and water; After the coating of this water-repellent paint, silicone oil floats on described oil polish surface, and nanometer paraffin wax can be spaced in the mode exposing silicone oil surface 5 ~ 100nm, leaves 0 ~ 50nm space between described nanometer paraffin wax.
2. a kind of water-repellent paint for paper products as claimed in claim 1, is characterized in that: described macromolecule silicone oil emulsion refers to by siloxanes, the O/w emulsion that surfactant and water are prepared from.
3. a kind of water-repellent paint for paper products as claimed in claim 1, it is characterized in that: formula of wax emulsion and preparation method thereof is as follows: in a reaction vessel, add wax, surfactant, water and other additives, pass through means THE ADIABATIC SHEAR IN emulsification certain hours such as stirring, ultrasonic in a heated condition, then cool and filter.
4. a kind of water-repellent paint for paper products as claimed in claim 1, is characterized in that: described macromolecule silicone oil emulsion is the polysiloxanes of molecular weight between 5000 to 10 ten thousand.
5. a kind of water-repellent paint for paper products as claimed in claim 1, is characterized in that: described nanometer paraffin wax emulsion is the aqueous liquid dispersion of particle diameter at 50-200nm.
6. a kind of water-repellent paint for paper products as claimed in claim 1, is characterized in that: the dry weight between described macromolecule silicone oil emulsion and nanometer paraffin wax emulsion is than between 5:1 to 1:5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510007377.4A CN104594118B (en) | 2015-01-07 | 2015-01-07 | A kind of water-repellent paint for paper products |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510007377.4A CN104594118B (en) | 2015-01-07 | 2015-01-07 | A kind of water-repellent paint for paper products |
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| CN104594118A true CN104594118A (en) | 2015-05-06 |
| CN104594118B CN104594118B (en) | 2018-01-02 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105368133A (en) * | 2015-12-19 | 2016-03-02 | 南京巨鲨显示科技有限公司 | Waterproof blooming-preventive printing ink for chemical indicator card |
| CN106283860A (en) * | 2016-08-08 | 2017-01-04 | 苏州莱奥生物技术有限公司 | A kind of carton water-repellent paint |
| CN107719877A (en) * | 2017-09-29 | 2018-02-23 | 广东中穗纸品有限公司 | A kind of nanometer quick-freezing fresh-keeping carton |
| CN109295801A (en) * | 2018-09-30 | 2019-02-01 | 兰溪泛仕达新材料科技有限公司 | A kind of water-based hydrophobic water-proof emulsion |
| CN112095363A (en) * | 2019-11-04 | 2020-12-18 | 上海映通印刷包装有限公司 | Paper special for mark pen drawing |
| CN113829770A (en) * | 2021-10-08 | 2021-12-24 | 东莞金杯印刷有限公司 | Glazing process for replacing adhesive film |
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| JP2005248026A (en) * | 2004-03-04 | 2005-09-15 | Unitika Ltd | Humidity-preventing coating agent and humidity prevention-processed article by coating the same |
| CN102154941A (en) * | 2011-03-18 | 2011-08-17 | 上海理工大学 | Preparation method of waterproof printing polishing oil for paper presswork |
| WO2014120175A1 (en) * | 2013-01-31 | 2014-08-07 | Hewlett-Packard Development Company, L.P. | Pre-treatment coating |
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2015
- 2015-01-07 CN CN201510007377.4A patent/CN104594118B/en not_active Expired - Fee Related
Patent Citations (3)
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| JP2005248026A (en) * | 2004-03-04 | 2005-09-15 | Unitika Ltd | Humidity-preventing coating agent and humidity prevention-processed article by coating the same |
| CN102154941A (en) * | 2011-03-18 | 2011-08-17 | 上海理工大学 | Preparation method of waterproof printing polishing oil for paper presswork |
| WO2014120175A1 (en) * | 2013-01-31 | 2014-08-07 | Hewlett-Packard Development Company, L.P. | Pre-treatment coating |
Non-Patent Citations (1)
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105368133A (en) * | 2015-12-19 | 2016-03-02 | 南京巨鲨显示科技有限公司 | Waterproof blooming-preventive printing ink for chemical indicator card |
| CN106283860A (en) * | 2016-08-08 | 2017-01-04 | 苏州莱奥生物技术有限公司 | A kind of carton water-repellent paint |
| CN107719877A (en) * | 2017-09-29 | 2018-02-23 | 广东中穗纸品有限公司 | A kind of nanometer quick-freezing fresh-keeping carton |
| CN109295801A (en) * | 2018-09-30 | 2019-02-01 | 兰溪泛仕达新材料科技有限公司 | A kind of water-based hydrophobic water-proof emulsion |
| CN112095363A (en) * | 2019-11-04 | 2020-12-18 | 上海映通印刷包装有限公司 | Paper special for mark pen drawing |
| CN113829770A (en) * | 2021-10-08 | 2021-12-24 | 东莞金杯印刷有限公司 | Glazing process for replacing adhesive film |
| CN113829770B (en) * | 2021-10-08 | 2024-03-22 | 东莞金杯印刷有限公司 | Glazing process for replacing adhesive film |
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| CN104594118B (en) | 2018-01-02 |
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Effective date of registration: 20180131 Address after: 200433 Shanghai city Yangpu District road 265 Lane 18 room 602 Co-patentee after: Ni Jingxue Patentee after: Deng Kaifa Co-patentee after: Miao Yufeng Co-patentee after: SHANGHAI YONGLE DIGITAL TECHNOLOGY CO.,LTD. Address before: 200433 Shanghai city Yangpu District road 265 Lane 18 room 602 Co-patentee before: Ni Jingxue Patentee before: Deng Kaifa Co-patentee before: Miao Yufeng |
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