CN110656534A - High-flexibility water-based varnish with good heat resistance and suitable for UV offset printing - Google Patents
High-flexibility water-based varnish with good heat resistance and suitable for UV offset printing Download PDFInfo
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- CN110656534A CN110656534A CN201910916194.2A CN201910916194A CN110656534A CN 110656534 A CN110656534 A CN 110656534A CN 201910916194 A CN201910916194 A CN 201910916194A CN 110656534 A CN110656534 A CN 110656534A
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- Prior art keywords
- water
- offset printing
- heat resistance
- emulsion
- varnish
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/10—Coatings without pigments
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/03—Non-macromolecular organic compounds
- D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
- D21H17/06—Alcohols; Phenols; Ethers; Aldehydes; Ketones; Acetals; Ketals
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/03—Non-macromolecular organic compounds
- D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
- D21H17/14—Carboxylic acids; Derivatives thereof
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/33—Synthetic macromolecular compounds
- D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D21H17/54—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen
- D21H17/57—Polyureas; Polyurethanes
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Paints Or Removers (AREA)
- Inks, Pencil-Leads, Or Crayons (AREA)
Abstract
The invention discloses a high-flexibility water-based varnish with better heat resistance and suitable for UV offset printing, which is a divisional application with the application number of 2017100265557 and adopts the technical scheme that the varnish consists of the following components in parts by weight: 10-20% of pure acrylic emulsion, 5-15% of acrylic acid modified waterborne polyurethane emulsion, 35-55% of self-crosslinking acrylic acid dispersing agent, 10-25% of water, 10-25% of alcohol solvent and 0.1-5% of water-based auxiliary agent; the invention provides a high-flexibility water-based varnish with good heat resistance and suitable for UV offset printing.
Description
The application is a divisional application, the original application has the application number of 2017100265557, and the application date is as follows: 14 days 01 and 2017, the invention name is: high-flexibility water-based varnish suitable for UV offset printing and preparation method thereof
[ technical field ] A method for producing a semiconductor device
The invention relates to a high-flexibility water-based varnish with good heat resistance and suitable for UV offset printing, belonging to the technical field of resin coatings.
[ background of the invention ]
In the field of packaging card paper printing such as cigarette packaging, wine box packaging, food packaging, medicine packaging, cosmetic packaging and the like, the used card paper is usually made into a composite card paper by adhering an aluminum foil and an aluminum-plated film to the surfaces of various card papers; in order to improve the quality and application field of the composite paperboard, improve the printing adaptability of the composite paperboard and protect aluminum atoms from oxidative discoloration, a layer of varnish is generally coated on the surfaces of an aluminum foil and an aluminum-plated film.
In recent years, as the main diluents of the water-based varnish in the production and preparation process are water and ethanol, the product has low VOC content, is environment-friendly and meets the national and local environmental protection requirements; the varnish is the varnish for coating the surface of the composite paperboard which is most popular and used in the largest amount in recent years.
The UV ink is free of solvent, high in drying speed, good in gloss, bright in color, water-resistant, solvent-resistant and good in wear resistance. The UV printing ink becomes a mature printing ink technology, the pollutant discharge is almost zero, and the national and local environmental protection requirements are met; high speed UV offset printing is increasingly becoming the mainstream of printing.
The common water-based varnish is generally made to be harder in consideration of the heat resistance of a paint film, so that UV ink is easy to burst when a printed product is required to be subjected to edge folding, embossing and bump pressing, the printed product is scrapped, and the application of the water-based varnish is limited.
Aiming at the UV ink bursting situation which occurs when paper is folded, embossed and embossed after the existing water-based varnish is printed with UV offset printing ink, a high-flexibility water-based varnish suitable for UV offset printing ink printing needs to be developed.
[ summary of the invention ]
The invention aims to overcome the defects of the existing water-based varnish and provide a water-based varnish which has high flexibility and is suitable for UV offset printing ink printing.
The invention also aims to provide a preparation method of the high-flexibility water-based varnish with better heat resistance and suitable for UV offset printing.
In order to achieve the purpose, the invention adopts the following technical scheme:
a high-flexibility water varnish with better heat resistance and suitable for UV offset printing is composed of the following components in parts by weight:
preferably, the glass transition temperature of the acrylic emulsion is 90-105 ℃, the lowest film forming temperature is more than 80 ℃, the particle size is 80-120 nm, and the solid content is 43-45%.
Preferably, the pure acrylic emulsion is an emulsion prepared by copolymerizing a plurality of acrylic acid, methacrylic acid, methyl methacrylate, acrylates and functional auxiliaries through an optimized process.
Preferably, the acrylic modified polyurethane emulsion is a composite emulsion prepared by copolymerization reaction of methyl methacrylate, butyl acrylate and waterborne polyurethane.
Preferably, the water is deionized water or distilled water.
Preferably, the minimum film-forming temperature of the self-crosslinking acrylic acid dispersant is less than 20 ℃, the particle size is 60-90 nm, and the solid content is 40-45%.
Preferably, the alcohol solvent is one or a mixture of ethanol, isopropanol and n-butanol.
Preferably, the aqueous auxiliary agent comprises a defoaming agent formed by one or more of polyether siloxane copolymer emulsion, organic modified polysiloxane emulsion, polysiloxane and higher alcohol, a leveling agent formed by one or more of polyether modified organic silicon, polysiloxane-polyether copolymer emulsion and modified silicone, and an anti-scratching agent formed by one or more of polydimethylsiloxane dispersion, high-molecular modified siloxane solution, silicone polymer, polyether modified organic silicon and polyethylene emulsifying wax.
A preparation method of a high-flexibility water-based varnish with better heat resistance and suitable for UV offset printing comprises the following steps:
1) preparing a component A: adding the pure acrylic emulsion, the acrylic acid modified waterborne polyurethane emulsion and the self-crosslinking acrylic acid dispersing agent into a dispersing cylinder according to the proportion, and stirring for 15 minutes at the rotating speed of 200 revolutions per minute to prepare a component A;
2) preparing a component B: adding deionized water, an alcohol solvent and a water-based auxiliary agent into a stirring cylinder according to a proportion, and stirring at a rotating speed of 300 revolutions per minute for 15 minutes to prepare a component B;
3) mixing: pumping the uniformly stirred component B into a dispersion cylinder, mixing with the component A, and stirring at the rotating speed of 200 revolutions per minute for 15 minutes;
4) filtering, purifying and packaging: impurities are removed through a filtering device, and the high-flexibility water-based varnish with better heat resistance and suitable for UV offset printing is obtained.
Compared with the prior art, the invention has the following advantages:
1. the high-flexibility water-based varnish with good heat resistance is suitable for UV offset printing, and the selected self-crosslinking acrylic acid dispersant has excellent recoatability and good adhesion with UV offset printing ink; and can provide excellent interlayer adhesion, namely, the adhesive has excellent adhesion to the substrate and the printed UV ink;
2. the high-flexibility water-based varnish with good heat resistance and suitable for UV offset printing can provide better flexibility by using the selected acrylic acid modified water-based polyurethane emulsion, and can prevent the ink from bursting when the processes of folding, embossing, bump stamping and the like are carried out after the UV ink is printed;
3. the high-flexibility water-based varnish has better heat resistance and is suitable for UV offset printing, the used diluent is water and an alcohol solvent, the varnish is non-toxic and non-pollution, the VOC emission is low, no adverse effect is caused on human bodies and the environment, and the varnish meets the requirements of national and industrial environmental protection standards.
[ detailed description ] embodiments
The invention is further described below with reference to specific examples:
the compositions of the components of the examples 1-5 in weight percentage are shown in the following table 1:
table 1:
the preparation method of the high-flexibility water-based varnish of the embodiment 1-5 comprises the following steps:
1) preparing a component A: adding the pure acrylic emulsion, the acrylic acid modified waterborne polyurethane emulsion and the self-crosslinking acrylic acid dispersing agent into a dispersing cylinder according to the formula proportion, and stirring for 15 minutes at the rotating speed of 200 revolutions per minute.
2) Preparing a component B: adding deionized water, an alcohol solvent and a water-based auxiliary agent into a stirring cylinder according to a proportion, and stirring for 15 minutes at a rotating speed of 300 revolutions per minute.
3) Mixing: the uniformly stirred component B is pumped into a dispersion cylinder, mixed with the component A and stirred for 15 minutes at the rotating speed of 200 revolutions per minute.
4) Filtering, purifying and packaging: impurities are removed through a filtering device, and the high-flexibility water-based varnish with better heat resistance and suitable for UV offset printing is obtained.
The aqueous defoamer of the embodiment 1 is polyether siloxane copolymer emulsion, the aqueous leveling agent is polysiloxane-polyether copolymer emulsion, and the aqueous anti-scratch agent is polyethylene emulsified wax.
The aqueous defoaming agent in example 2 is an organic modified polysiloxane emulsion, the aqueous leveling agent is polyether modified organosilicon, and the aqueous anti-scratch agent is a polydimethylsiloxane dispersion.
The aqueous defoamer of the embodiment 3 is polyether siloxane copolymer emulsion, the aqueous leveling agent is polyether modified organic silicon, and the aqueous anti-scratch agent is polyethylene emulsified wax.
The aqueous defoamer of the above example 4 is a polyether siloxane copolymer emulsion, the aqueous leveling agent is a polysiloxane-polyether copolymer emulsion, and the aqueous anti-scratch agent is a polydimethylsiloxane dispersion.
The aqueous defoamer of the embodiment 5 is polyether siloxane copolymer emulsion, the aqueous leveling agent is polysiloxane-polyether copolymer emulsion, and the aqueous anti-scratch agent is polydimethylsiloxane dispersoid.
The results of the physical and chemical property tests of examples 1 to 5 are shown in Table 2:
table 2:
the folding, embossing and embossing performances after printing the same UV offset printing ink coated with the aqueous varnish of examples 1 to 5 and the composite cardboard coated with the conventional aqueous varnish are shown in table 3:
table 3:
the test method comprises the following steps:
1) ink adhesion: testing the adhesive force of the UV offset printing ink by using a check method; firstly, cutting a cross-shaped lattice pattern on the UV ink layer subjected to curing by using a hundred-lattice knife until the cross-shaped lattice pattern reaches a substrate; and then brushing the cut edge five times along the diagonal direction by using a brush, finally adhering the cut edge on a 3M adhesive tape and pulling the cut edge open, and judging the adhesive force according to the condition of the ink in the latticed area.
2) And (3) edge folding testing: the composite paperboard printed with the UV offset printing ink is folded in half at 180 degrees for 20 times, and the condition of the ink at the folded edge is observed.
3) Embossing test: the composite cardboard printed with the UV offset ink was embossed with an embosser under a pressure of 20kg, and the ink condition at the embossed portion was observed.
4) And (3) bump test: the composite cardboard printed with the UV offset ink was embossed with an embossing machine under a pressure of 35kg, and the condition of the ink at the embossed portion was observed.
The results obtained from the above tests show that:
1) the high-flexibility water-based varnish with good heat resistance is suitable for UV offset printing, and has excellent adhesion to substrates and printed UV ink.
2) The high-flexibility water-based varnish has good heat resistance, is suitable for UV offset printing, has good flexibility, and can not crack when the UV offset printing ink is subjected to subsequent processes of edge folding, embossing, bump pressing and the like after being printed.
Claims (5)
1. A high-flexibility water varnish with better heat resistance and suitable for UV offset printing is characterized by comprising the following components in parts by weight:
the acrylic acid modified waterborne polyurethane emulsion is a composite emulsion prepared by copolymerization reaction of methyl methacrylate, butyl acrylate and waterborne polyurethane, the minimum film forming temperature of the self-crosslinking acrylic acid dispersing agent is less than 20 ℃, the particle size is 60-90 nm, the solid content is 40-45%, and the water is deionized water or distilled water.
2. The high-flexibility water-based varnish with good heat resistance suitable for UV offset printing as claimed in claim 1, wherein: the pure acrylic emulsion has the glass transition temperature of 90-105 ℃, the minimum film forming temperature of more than 80 ℃, the particle size of 80-120 nm and the solid content of 43-45%.
3. The high-flexibility water-based varnish with good heat resistance suitable for UV offset printing as claimed in claim 1, wherein: the pure acrylic emulsion is an emulsion prepared by copolymerizing a plurality of acrylic acid, methacrylic acid, methyl methacrylate, acrylic esters and functional auxiliaries through an optimized process.
4. The high-flexibility water-based varnish with good heat resistance suitable for UV offset printing as claimed in claim 1, wherein: the alcohol solvent is one or more of ethanol, isopropanol and n-butanol.
5. The high-flexibility water-based varnish with good heat resistance suitable for UV offset printing as claimed in claim 1, wherein: the water-based auxiliary agent comprises a defoaming agent formed by one or more of polyether siloxane copolymer emulsion, organic modified polysiloxane emulsion, polysiloxane and high-carbon alcohol, a leveling agent formed by one or more of polyether modified organic silicon, polysiloxane-polyether copolymer emulsion and modified silicone, and an anti-scratching agent formed by one or more of polydimethylsiloxane dispersoid, high-molecular modified siloxane solution, silicone polymer, polyether modified organic silicon and polyethylene emulsifying wax.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910916194.2A CN110656534A (en) | 2019-09-26 | 2019-09-26 | High-flexibility water-based varnish with good heat resistance and suitable for UV offset printing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910916194.2A CN110656534A (en) | 2019-09-26 | 2019-09-26 | High-flexibility water-based varnish with good heat resistance and suitable for UV offset printing |
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| CN110656534A true CN110656534A (en) | 2020-01-07 |
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| CN201910916194.2A Pending CN110656534A (en) | 2019-09-26 | 2019-09-26 | High-flexibility water-based varnish with good heat resistance and suitable for UV offset printing |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104530892A (en) * | 2015-01-20 | 2015-04-22 | 中山市博海精细化工有限公司 | Environment-friendly waterborne varnish for compound gold card paper and preparation method of waterborne varnish |
| CN105386365A (en) * | 2015-10-10 | 2016-03-09 | 洋紫荆油墨(中山)有限公司 | High-gloss anti-scratch waterborne glazing oil and preparation method thereof |
| CN106833223A (en) * | 2017-01-14 | 2017-06-13 | 中山市博海精细化工有限公司 | A kind of high-flexibility water varnish of suitable UV offset printings and preparation method thereof |
-
2019
- 2019-09-26 CN CN201910916194.2A patent/CN110656534A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104530892A (en) * | 2015-01-20 | 2015-04-22 | 中山市博海精细化工有限公司 | Environment-friendly waterborne varnish for compound gold card paper and preparation method of waterborne varnish |
| CN105386365A (en) * | 2015-10-10 | 2016-03-09 | 洋紫荆油墨(中山)有限公司 | High-gloss anti-scratch waterborne glazing oil and preparation method thereof |
| CN106833223A (en) * | 2017-01-14 | 2017-06-13 | 中山市博海精细化工有限公司 | A kind of high-flexibility water varnish of suitable UV offset printings and preparation method thereof |
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Application publication date: 20200107 |
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