CN108329813A - A kind of bend resistance aqueous transfer coating and preparation method thereof - Google Patents
A kind of bend resistance aqueous transfer coating and preparation method thereof Download PDFInfo
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- CN108329813A CN108329813A CN201711486558.5A CN201711486558A CN108329813A CN 108329813 A CN108329813 A CN 108329813A CN 201711486558 A CN201711486558 A CN 201711486558A CN 108329813 A CN108329813 A CN 108329813A
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- transfer coating
- bend resistance
- aqueous transfer
- coating according
- resistance aqueous
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Paints Or Removers (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The present invention provides a kind of bend resistance aqueous transfer coating and preparation method thereof, the coating includes each component of following parts by weight：15 30 parts of aqueous polyurethane emulsion；0.5 1 parts of crosslinking agent；69 84 parts of deionized water；0.5 1 parts of auxiliary agent；The aqueous polyurethane emulsion is synthesized using IPDI with polycarbonate polyol.The present invention effectively overcomes the problem not resistant to bending of existing transfer coatings generally existing, and the performance of bending during contributing to promotion to shift paper printing and packet cigarette is not in paper or is printed quick-fried the phenomenon that buckleing.The present invention uses water-base resin system completely, is free of any volatile organic solvent, is a kind of environmental-protection aqueous transfer coating.
Description
Technical field
The present invention relates to technical field of coatings, and in particular, to a kind of bend resistance aqueous transfer coating and preparation method thereof.
Background technology
Transfer coatings are commonly used with tobacco package field, to transfer aluminum plated layer to realize that the metallic silver of outer packing is imitated
Fruit, it is another to accept printing layer to the function that shows fine printed patterns to realize anti-fake；Transfer coatings are applied with solvent type at present
Based on material, containing a large amount of volatile organic compounds (VOCs), while coating is subsequently printing after being transferred on paper
Need, by multiple tracks technique, there is repeatedly bending situation with paper during packet cigarette, usually in this case, packaging paperboard printing
Face will appear the phenomenon that ink is broken and leads to bottom drain paper, influence product packaging appearance.Therefore, it is urgent to provide a kind of transfer paintings
The case where expecting, on the one hand solving existing transfer coated not folding, on the other hand solves the solvent volatile zone of existing solvent based coating
The pollution problem come, can be entirely free of volatile organic compounds.
Invention content
For the defects in the prior art, the object of the present invention is to provide a kind of bend resistance aqueous transfer coating and its preparations
Method.
The purpose of the present invention is achieved through the following technical solutions：
The present invention provides a kind of bend resistance aqueous transfer coating, includes each component of following parts by weight：
If the parts by weight of above-mentioned aqueous polyurethane emulsion are less than 15 parts, film-forming resin is unfavorable for forming a film very little and hand over
Connection；If being higher than 30 parts of resins, when aqueous polyurethane contains admittedly higher than 45%, the levelling problem of finally formed formula is bigger,
It is poor to be coated with levelling difference mirror effect, is not suitable for transfer coatings.
If the parts by weight of above-mentioned crosslinking agent are less than 0.5 part, crosslink density is inadequate, and folding is insufficient；If more than 1 part, meeting
It causes auxiliary agent extra, forms waste.In being coated with drying course, crosslinking agent is reacted with aqueous polyurethane, improves polymer chain
Intersegmental crosslink density, to improve folding resistance.
Preferably, the aqueous polyurethane emulsion is synthesized using IPDI with polycarbonate polyol.
Preferably, the number-average molecular weight of the polycarbonate polyol is 2000-3000.And when molecular weight polycarbonate is more
After the number-average molecular weight of first alcohol is more than 3000, viscosity is too big, can not carry out phase inversion after reaction completely.
Preferably, the hard section ratio of the aqueous polyurethane emulsion is 50-75%.If the hard section ratio of aqueous polyurethane emulsion
Example is less than 50%, and heatproof is insufficient after emulsion film forming, and is higher than 75%, and it is poor that emulsion film forming retrodeviates crisp folding resistance.
Preferably, the solid of the aqueous polyurethane emulsion contains for 25-45%.
Preferably, the crosslinking agent is Carbodiimides, aziridines or oxazoline class crosslinking agent.Transfer coatings are being answered
With the technique that there is coating drying in the process, using the thermal energy of drying make crosslinking agent react with aqueous polyurethane raising polyurethane at
Crosslink density after film is to improve buckle resistance；It is obtained after the verification of a large amount of actual experiment preferably above-mentioned in the present invention
The crosslinking agent of three types.
Preferably, the auxiliary agent is antifoaming agent and wetting agent.
Preferably, the antifoaming agent is Tego Foamex830.Foamex830 be selected after largely testing it is non-
Silicon class antifoaming agent has different from silicon class antifoaming agent conventional in the market, solves siliceous class antifoaming agent by using Foamex830 and exist
It is placed for a long time in water-based system and there are problems that stability.
Preferably, the wetting agent is Tego Wet240.It is obtained by largely testing, WET240 is in this patent application
In wetting ability can be effectively provided, form excellent levelling effect.
Preferably, the deionized water is normal commercial.
The present invention also provides a kind of preparation methods of bend resistance aqueous transfer coating, include the following steps：
S1, the aqueous polyurethane emulsion is added in deionized water, adds auxiliary agent, stirs and evenly mixs；
Be added crosslinking agent in S2, the solution obtained by step S1, stirring, filter to get.
Preferably, according to the solid crosslinking agent containing addition of the aqueous polyurethane emulsion, the quality that the crosslinking agent is added is
The aqueous polyurethane emulsion contain admittedly 2%.
Preferably, after step S2, diluent is added according to practical coating dry measure demand and adjusts lotion to properly containing admittedly, institute
It is ethanol/water=2/1 to state diluent.
The present invention provides a kind of aqueous bend resistance transfer coatings, on the one hand solves the feelings of existing transfer coated not folding
On the other hand condition is entirely free of volatile organic compounds, the pollution for solving the solvent volatile zone of existing solvent based coating is asked
Topic.
Compared with prior art, the present invention has following advantageous effect：
1, the present invention effectively overcomes the problem not resistant to bending of existing transfer coatings generally existing, by using specific
Aqueous polyurethane emulsion and crosslinking agent, and by specific proportioning, substantially increase the bending resistance of transfer coatings.Using this turn
Move coating contribute to promoted transfer paper printing and packet cigarette during bend performance, be not in paper or printing it is quick-fried buckle show
As.
2, the present invention uses water-base resin system completely, is free of any volatile organic solvent, is a kind of environment-friendly type water
Property transfer coatings.
Specific implementation mode
With reference to specific embodiment, the present invention is described in detail.Following embodiment will be helpful to the technology of this field
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill of this field
For personnel, without departing from the inventive concept of the premise, several changes and improvements can also be made.These belong to the present invention
Protection domain.
Embodiment 1
The present embodiment is related to a kind of bend resistance aqueous transfer coating, includes each component of following weight percent content：
The preparation method of the present embodiment aqueous transfer coating includes：
Aqueous polyurethane emulsion is added in deionized water, Foamex830 and Wet240 is added, 800rpm stirs 30 points
Clock, is then added carbodiimides, and 500rpm is stirred 5 minutes, using after 320 mesh filter screen filtrations up to required emulsion coatings.
The aqueous transfer coating matched by above-mentioned formula is aluminized using the technique coating of roller coating and is transferred in paperboard, resistance to
It is not in coating failure phenomenon that folding folds test up to 10 times back and forth according to positive and negative 180 DEG C.
Embodiment 2
The present embodiment is related to a kind of bend resistance aqueous transfer coating, includes each component of following weight percent content：
The preparation method of the present embodiment aqueous transfer coating is consistent with embodiment 1.
The aqueous transfer coating matched by above-mentioned formula is aluminized using the technique coating of roller coating and is transferred in paperboard, resistance to
It is not in coating failure phenomenon that folding folds test up to 20 times back and forth according to positive and negative 180 DEG C.
Embodiment 3
The present embodiment is related to a kind of bend resistance aqueous transfer coating, includes each component of following weight percent content：
The preparation method of the present embodiment aqueous transfer coating is consistent with embodiment 1.
The aqueous transfer coating matched by above-mentioned formula, the aqueous transfer coating matched by above-mentioned formula, using roller
The technique coating of painting, which is aluminized, to be transferred in paperboard, and folding is not in that coating failure is existing up to 40 times according to positive and negative 180 DEG C tests
As.
Comparative example 1
Triumphant photoelectricity new material Co., Ltd solvent type transfer coatings BL-0905C is tieed up using Shanghai, according to identical as embodiment
Coating aluminize combination process, folding folds test 3 times according to positive and negative 180 DEG C and coating failure phenomenon occurs back and forth.
Comparative example 2
It is basic with embodiment 1 that this comparative example is related to a kind of bend resistance aqueous transfer coating, constituent content and preparation method
Unanimously, the difference is that：Non-carbonized diimine class crosslinker component.
Comparative example 3
It is basic with embodiment 1 that this comparative example is related to a kind of bend resistance aqueous transfer coating, constituent content and preparation method
Unanimously, the difference is that：Crosslinking agent uses water-based isocyanate crosslinking agent, can not improve folding resistance.
Comparative example 4
It is basic with embodiment 1 that this comparative example is related to a kind of bend resistance aqueous transfer coating, constituent content and preparation method
Unanimously, the difference is that：Aqueous polyurethane emulsion is synthesized using IPDI with polyether polyol, and the molecular weight of polyether polyol is
2000。
Test result
Test coating buckle resistance：Aqueous transfer coating prepared by each embodiment and each comparative example, using the work of roller coating
Skill coating, which is aluminized, to be transferred in paperboard, and folding folds the testing time for coating failure phenomenon occur back and forth according to positive and negative 180 DEG C, surveys
Test result is as shown in table 1.
Organic solvent residual is tested：Using the measurement head space and gas phase of dissolvent residual in YC/T-207-2014 Cigarette papers
Chromatography/Mass Spectrometry is combined testing standard, and test result is as shown in table 1.
Table 1
Specific embodiments of the present invention are described above.It is to be appreciated that the invention is not limited in above-mentioned
Particular implementation, those skilled in the art can make a variety of changes or change within the scope of the claims, this not shadow
Ring the substantive content of the present invention.In the absence of conflict, the feature in embodiments herein and embodiment can arbitrary phase
Mutually combination.
Claims (10)
1. a kind of bend resistance aqueous transfer coating, which is characterized in that include each component of following parts by weight：
2. bend resistance aqueous transfer coating according to claim 1, which is characterized in that the aqueous polyurethane emulsion uses
IPDI is synthesized with polycarbonate polyol.
3. bend resistance aqueous transfer coating according to claim 2, which is characterized in that the number of the polycarbonate polyol
Average molecular weight is 2000-3000.
4. bend resistance aqueous transfer coating according to claim 1, which is characterized in that the aqueous polyurethane emulsion it is hard
Section ratio is 50-75%, Gu containing being 25-45%.
5. bend resistance aqueous transfer coating according to claim 1, which is characterized in that the crosslinking agent is carbodiimides
Class, aziridines or oxazoline class crosslinking agent.
6. bend resistance aqueous transfer coating according to claim 1, which is characterized in that the auxiliary agent is antifoaming agent and wetting
Agent.
7. bend resistance aqueous transfer coating according to claim 6, which is characterized in that the antifoaming agent is
TegoFoamex830。
8. bend resistance aqueous transfer coating according to claim 6, which is characterized in that the wetting agent is
TegoWet240。
9. a kind of preparation method of bend resistance aqueous transfer coating according to any one of claim 1-8, feature exist
In including the following steps：
S1, the aqueous polyurethane emulsion is added in deionized water, adds auxiliary agent, stirs and evenly mixs；
Be added crosslinking agent in S2, the solution obtained by step S1, stirring, filter to get.
10. the preparation method of bend resistance aqueous transfer coating according to claim 9, which is characterized in that including walking as follows
Suddenly：After step S2, diluent is added according to practical coating dry measure demand and adjusts the coating to properly containing admittedly, the diluent
For ethanol/water=2/1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711486558.5A CN108329813B (en) | 2017-12-29 | 2017-12-29 | Bending-resistant water-based transfer coating and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711486558.5A CN108329813B (en) | 2017-12-29 | 2017-12-29 | Bending-resistant water-based transfer coating and preparation method thereof |
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| CN108329813A true CN108329813A (en) | 2018-07-27 |
| CN108329813B CN108329813B (en) | 2020-09-08 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110105861A (en) * | 2019-06-03 | 2019-08-09 | 云南玉溪东魅包装材料有限公司 | Complete aqueous release coating and preparation method thereof for alumite thermoprinting foil |
| CN110802935A (en) * | 2019-11-19 | 2020-02-18 | 东莞市信彩包装有限公司 | Anti-cracking printing method for printing ink at bending part of paper box |
| CN115477886A (en) * | 2022-08-03 | 2022-12-16 | 广东邦固化学科技有限公司 | Water-based folding-resistant high-brightness composite coating and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101407654A (en) * | 2008-11-14 | 2009-04-15 | 上海维凯化学品有限公司 | High peeling environment-friendly type aqueous transfer coating and use thereof |
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2017
- 2017-12-29 CN CN201711486558.5A patent/CN108329813B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101407654A (en) * | 2008-11-14 | 2009-04-15 | 上海维凯化学品有限公司 | High peeling environment-friendly type aqueous transfer coating and use thereof |
Non-Patent Citations (1)
| Title |
|---|
| 耿耀宗: "《现代水性涂料 工艺·配方·应用》", 31 March 2003, 中国石化出版社 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110105861A (en) * | 2019-06-03 | 2019-08-09 | 云南玉溪东魅包装材料有限公司 | Complete aqueous release coating and preparation method thereof for alumite thermoprinting foil |
| CN110802935A (en) * | 2019-11-19 | 2020-02-18 | 东莞市信彩包装有限公司 | Anti-cracking printing method for printing ink at bending part of paper box |
| CN110802935B (en) * | 2019-11-19 | 2021-07-02 | 东莞市信彩包装有限公司 | Anti-cracking printing method for printing ink at bending part of paper box |
| CN115477886A (en) * | 2022-08-03 | 2022-12-16 | 广东邦固化学科技有限公司 | Water-based folding-resistant high-brightness composite coating and preparation method thereof |
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| Publication number | Publication date |
|---|---|
| CN108329813B (en) | 2020-09-08 |
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