CN105385226A

CN105385226A - Plastic film gravure inner printing aqueous printing ink and preparation method thereof

Info

Publication number: CN105385226A
Application number: CN201510907445.2A
Authority: CN
Inventors: 陈万成
Original assignee: 陈万成
Current assignee: Zhuhai Yue Yue ink new material Limited by Share Ltd
Priority date: 2015-12-09
Filing date: 2015-12-09
Publication date: 2016-03-09

Abstract

The invention relates to a plastic film gravure inner printing aqueous printing ink and a preparation method thereof. The aqueous printing ink mainly comprises aqueous polyurethane resin, aqueous acrylic resin, and maleic resin. The invention also provides a preparation method of the aqueous printing ink. The aqueous printing ink does not contain any solvent that is harmful or irritant to human body such as benzene, ketone, alcohol, or the like. Moreover, the aqueous printing ink is nontoxic, pollution-free, and inflammable, and barely discharges volatile organic compound (VOC). At the same time, the provided aqueous printing ink has the advantages of excellent adhesiveness, levelling property, flexibility, and anti-scraping performance in gravure inner printing and stable properties.

Description

Plastics film intaglio plate reverse printing ink and preparation method thereof

Technical field

The present invention relates to a kind of ink of intaglio printing, specifically, relate to a kind of for plastics film intaglio plate reverse printing ink and preparation method thereof.

Background technology

Intaglio printing is that image is from carving recessed plate-making technology on the surface.In general, adopt copper or zine plate as the surface of carving, recessed part can utilize burn into engraving, copperplate etching or mezzotint metallograph graphic arts process, and Collographs may according to gravure printing.

The typography of the flexible packaging thing of plastics film adopts the mode of intaglio printing usually.In the art, the character of the ink that intaglio printing uses is most important, and it needs the ink choosing particular types according to different print carriers usually.And in the ink system printed in known traditional plastics film intaglio plate, mostly adopt the organic solvent of benzene class, ketone as the resin dissolves solute in intaglio plate inner-printing ink system.And in the manufacture of this series products and operation and consumption use procedure, volatilize poisonous organic solvent and greatly pollute environment, and it easily causes direct or potential harm to crowds such as the final human consumers of the producer of ink, press operator and commodity.To this, European Union prohibited in the fields such as food, beverage, medicine, toy for children at PET(polyethylene terephthalate), OPP(oriented polypropylene), CPP(cast polypropylene), PE(polyethylene), BOPP(Biaxially oriented polypropylene film (BOPP)), PVC(polyvinyl chloride) etc. plastics film uses solvent type ink.

At present, the low ketone of low benzene and the compound oil ink without the low ketone of benzene has been there is in market, but this method can only reach the dissolvent residual reducing ketone, thoroughly can not remove the residual of low ketone, and these ink qualities can not reach or can not reach the requirement of print product and relevant quality standard completely.In addition, at application number, to be CN200810001855.3 and application number be discloses the ink adopting alcohol system in the Chinese invention patent application of CN201310240925.9, this avoids the harm of benzene class, ketones solvent to a certain extent, but alcohol itself is also organic solvent.The risk that this organic solvent brings on the one hand does not overcome completely, also can increase the manufacturing cost of this ink on the other hand.

Be disclose a kind of water-soluble inner print composite plastic ink in the Chinese invention patent application of CN201410241529.2 at application number, but the versatility of such ink application is inadequate, the scope of its printing carrier as the type of plastics film is restricted.Be in the Chinese invention patent application of CN201410328272.4, also disclose a kind of full water-based plastic film intaglio printing ink at application number, its major programme is based on three kinds of acrylic resin emulsions, but the range of application of this type ink is also restricted, such as, the non-constant of the applicability of such ink on PET film, this may be due to the melting of PET film or melting temperature higher, and such ink at relatively high temperatures properties significantly to reduce and cause.

Integrate and see, the range of applicability that conventional plastic film intaglio plate inner-printing ink exists is narrow, problem containing organic solvent, traditional ink is made easily to cause stock in printing enterprise, both consumed factory building, warehouse usable floor area and produce significant wastage, also add inflammable, the explosive risk of printing house.

Summary of the invention

For the problem that adaptability is narrow, printing effect is bad that existing intaglio plate inner-printing ink exists for plastics film, main purpose of the present invention be to provide a kind of adaptability to plastics film extensively, printing effect all shows well and not containing the plastics film intaglio plate reverse printing ink of noxious solvent.

In order to realize goal of the invention of the present invention, plastics film intaglio plate reverse printing ink provided by the invention comprises component below, and component carries out proportioning according to weight part: waterborne polyurethane resin 22 to 36 parts; Water-borne acrylic resin 20 to 35 parts; Maleic acid resin 10 to 15 parts; Flow agent 0.5 to 2.0 part; Wetting coupling agent 0.5 to 2.5 part; Defoamer 0.1 to 0.5 part; Pigment 9.0 to 11 parts; Filler 2.0 to 7.0 parts; Dispersion agent 0.3 to 1.0 part; Water-borne preservative 0.3 to 0.5 part; Pure water 8.0 to 15.0 parts.

From such scheme, the pattern of this intaglio plate reverse printing ink printing, after ink film drying and forming-film, to have a water resisting property, high gloss, anti-scratch, alkali-resistivity and anti-ultraviolet performance.The binder of ink provided by the invention primarily of water-soluble polyurethane, water-soluble acrylic resin, maleic acid resin composition, and does not use benzene, ketone, alcohol etc. to have the solvent of harm or hormesis to the health of people in component.Further, in the component of this ink containing the element forbidden on China and the international and compound thereof as lead, cadmium, mercury, selenium, arsenic, antimony, sexavalent chrome; Glycol ether and lipid are as ethylene glycol monomethyl ether, glycol methyl ether acetate, ethylene glycol ethyl ether, ethylene glycol ether acetate; Phthalate is if your ketone of o-phthalic acid dibutyl ester, dibutyl phthalate and different fluorine etc. is as the organic carrier of plastic-film water ink.In addition, ink of the present invention nontoxic, pollution-free, do not fire, almost there is no VOC(volatile organic compounds) discharge.In addition, ink of the present invention India and China in intaglio plate have fabulous tack, levelling property, snappiness, scrath resistance and glossiness, and stable performance.Ink of the present invention prints in technique in the intaglio plate of plastics film, need not preprint or print rear glazing (Lacquer finish), about the same in the method technique of other printing process and traditional oil type or solvent-borne type ink for screen printing, namely do not change Conventional printing process flow process, also do not change the mode of operations, also reduce labour intensity and product cost simultaneously.In addition, traditional intaglio plate inner-printing ink is generally only limitted to the plastics film of one or both particular types, or only good in the plastics film performance of one or both particular types.But ink range of application provided by the invention is widely and character performance is stable, therefore when polytype plastic film printing, without the need to changing ink and clear film processor during switching, very easy to use, greatly simplify related process operation.It needs to be noted, the component of ink provided by the invention is for print exploitation in intaglio plate, if when being applied in intaglio plate table print when reality uses, because the Property requirements of Biao Yin with Li Yin to ink is different, properties such as the luminance brightness of reverse printing ink can not meet the requirement showing print.

A preferred scheme is, plastics film is at least one in high-isolation film, polypropylene film, polyethylene film, polyester film, nylon film, metallized film, polyvinyl chloride film, pearl film or sub-light film.

From such scheme, widely, its versatility used is very high, significantly improves the convenience that it uses for the scope of the adaptable plastics film of ink provided by the invention.

Preferred scheme is that high-isolation film is PVA further; Polypropylene-base film is BOPP, CPP, OPP or PP; Polyethylene film is PE, LDPE, HDPE or LLDPE; Polyester film is PETPBT, PEN, PETG or BOPEI; Nylon film is PA, NY or BOPA; Metallized film is VMPET or VMCPP; Polyvinyl chloride film is PVC or PVDC; Pearl film is OPP; Sub-light film is OPP or CPP.

The preparation method of plastics film intaglio plate reverse printing ink provided by the invention performs step below successively: component carries out proportioning according to weight part,

Step (1): take the waterborne polyurethane resin of 22 to 36 parts, the maleic acid resin of the water-borne acrylic resin of 20 to 35 parts and 10 to 15 parts forms the first mixture;

Step (2): add 0.5 to 2.0 part of flow agent in the first mixture, 0.3 to 0.5 part of water-borne preservative, 0.1 to 0.5 part of defoamer, 2.0 to 7.0 parts of fillers, first part of pure water form the second mixture through pre-dispersed process;

Step (3): add 0.5 to 2.5 part of wetting coupling agent in the second mixture, 9.0 to 11 parts of pigment, 0.3 to 1.0 part of dispersion agent carry out high force dispersion process;

Step (4): the material that step (3) is obtained is through shredder process;

Step (5): detect fineness, sticking power and glossiness;

Step (6): add second part of pure water and carry out viscosity adjustment, and first part of pure water and second part of pure water totally 8.0 to 15.0 parts;

Step (7): obtain finished product with after metre filter.

From such scheme, manufacture craft is easy, easy handling, obtains the ink of good properties, and in preparation technology, do not relate to the noxious solvent to human body such as organic solvent.In addition, the object of first part of pure water is dissemination, and the object of second part of pure water is regulation system viscosity.

A preferred scheme is, in step (4): the number of times of shredder process is 1 to 3 time.

From such scheme, adopt high speed dispersor high speed dispersion, make resin liquid sweep along ground colorant fully, both achieved the high-level efficiency of production, low cost, the high quality that in turn ensure that (printing in intaglio plate) compound ink and dominance energy.

Preferred scheme is that high-isolation film is PVA(polyvinyl alcohol further); Polypropylene-base film is BOPP(Biaxially oriented polypropylene film (BOPP)), CPP(cast polypropylene), OPP(oriented polypropylene) or PP(polypropylene); Polyethylene film is PE(polyethylene), LDPE(Low Density Polyethylene), HDPE(high density polyethylene(HDPE)) or LLDPE(LLDPE); Polyester film is PET(polyethylene terephthalate), PBT(polybutylene terephthalate), PEN(PEN), PETG(polyethylene terephthalate-1,4 cyclohexane dimethanol ester) or BOPEI; Nylon film is PA(polymeric amide), NY or BOPA(BON biaxially oriented nylon film); Metallized film is VMPET (polyester aluminium plating film) or VMCPP (aluminium plating film); Polyvinyl chloride film is PVC(polyvinyl chloride) or PVDC(polyvinylidene chloride); Pearl film is OPP; Sub-light film is OPP or CPP.

Accompanying drawing explanation

Fig. 1 is the schema of preparation method's embodiment of plastics film intaglio plate reverse printing ink of the present invention.

Below in conjunction with drawings and Examples, the invention will be further described.

Embodiment

In an embodiment of the present invention, plastics film intaglio plate reverse printing ink carries out component proportioning according to weight part below: waterborne polyurethane resin 22 to 36 parts; Water-borne acrylic resin 20 to 35 parts; Maleic acid resin 10 to 15 parts; Flow agent 0.5 to 2.0 part; Wetting coupling agent 0.5 to 2.5 part; Defoamer 0.1 to 0.5 part; Pigment 9.0 to 11 parts; Filler 2.0 to 7.0 parts; Dispersion agent 0.3 to 1.0 part; Water-borne preservative 0.3 to 0.5 part; Pure water 8.0 to 15.0 parts.Wherein, maleic acid resin is preferably maleic acid rosin ester, and wetting coupling agent is preferably silane coupling agent, and filler comprises carbonate, silicon and silicates, Sulfates and other filler as known in the art etc.

In certain embodiments, plastics film is high-isolation film, high-isolation film is PVA, and polypropylene-base film is BOPP, CPP, OPP or PP, and polyethylene film is PE, LDPE, HDPE or LLDPE, polyester film is PET, PBT, PEN, PETG or BOPEI, nylon film is PA, NY or BOPA, and metallized film is VMPET or VMCPP, and polyvinyl chloride film is PVC or PVDC, pearl film is OPP, and sub-light film is OPP or CPP.

As shown in Figure 1, in certain embodiments, the preparation method of plastics film intaglio plate reverse printing ink performs step below successively.

First, step S1 is performed: take the waterborne polyurethane resin of 22 to 36 parts, the maleic acid resin of the water-borne acrylic resin of 20 to 35 parts and 10 to 15 parts forms the first mixture.

Then, step S2 is performed: in the first mixture, add 0.5 to 2.0 part of flow agent, 0.3 to 0.5 part of water-borne preservative, 0.1 to 0.5 part of defoamer, 2.0 to 7.0 parts of fillers, first part of pure water form the second mixture through pre-dispersed process.

Then, step S3 is performed: in the second mixture, add 0.5 to 2.5 part of wetting coupling agent, 9.0 to 11 parts of pigment, 0.3 to 1.0 part of dispersion agent carry out high force dispersion process, obtain dispersion treatment intermediate.

Then, step S4 is performed: the material in step S3 through shredder process, and in some preferred embodiments, in step s 4 which: the number of times of shredder process is 1 to 3 time, obtains milled processed intermediate.

Then, perform step S5: detect fineness, sticking power and glossiness, obtain detecting screening intermediate.

Then, perform step S6: add second part of pure water and carry out viscosity adjustment, first part of pure water and second part of pure water totally 8.0 to 15.0, obtains viscosity adjustment rear center body.

Finally, step S7 is performed: obtain finished product with after metre filter.

According to the preparation method of plastics film intaglio plate reverse printing ink above, the difference according to the concrete parts by weight of material various in component obtains multiple embodiment, and the component composition by weight of the ink in these embodiments is depicted as table 1 below, table 2 and table 3.

The component composition of the plastics film intaglio plate reverse printing ink of table 1. embodiment 1 to 5.

Each component and number	Embodiment 1	Embodiment 2	Embodiment 3	Embodiment 4	Embodiment 5
						Waterborne polyurethane resin	22	25	28	31	36
Water-borne acrylic resin	28	28	28	28	28
						Maleic acid resin	13	13	13	13	13
Flow agent	1.0	1.0	1.0	1.0	1.0
						Wetting coupling agent	1.5	1.5	1.5	1.5	1.5
Defoamer	0.3	0.3	0.3	0.3	0.3
						Pigment	10	10	10	10	10
Filler	4	4	4	4	4
						Dispersion agent	0.6	0.6	0.6	0.6	0.6
Water-borne preservative	0.4	0.4	0.4	0.4	0.4
						Pure water	12	12	12	12	12

。

The component composition of the plastics film intaglio plate reverse printing ink of table 2. embodiment 6 to 10.

Each component and number	Embodiment 6	Embodiment 7	Embodiment 8	Embodiment 9	Embodiment 10
						Waterborne polyurethane resin	30	30	30	30	30
Water-borne acrylic resin	20	23	26	30	35
						Maleic acid resin	13	13	13	13	13
Flow agent	1.0	1.0	1.0	2.0	1.0
						Wetting coupling agent	1.5	1.5	1.5	2.5	1.5
Defoamer	0.3	0.3	0.3	0.5	0.3
						Pigment	10	10	10	11	10
Filler	4	4	4	7	4
						Dispersion agent	0.6	0.6	0.6	1.0	0.6
Water-borne preservative	0.4	0.4	0.4	0.5	0.4
						Pure water	12	12	12	15	12

。

The component composition of the plastics film intaglio plate reverse printing ink of table 3. embodiment 11 to 15.

Each component and number	Embodiment 11	Embodiment 12	Embodiment 13	Embodiment 14	Embodiment 15
						Waterborne polyurethane resin	30	30	30	30	30
Water-borne acrylic resin	28	28	28	28	28
						Maleic acid resin	10	11	12	13	15
Flow agent	1.0	1.0	0.5	1.0	1.0
						Wetting coupling agent	1.5	1.5	0.5	1.5	1.5
Defoamer	0.3	0.3	0.1	0.3	0.3
						Pigment	10	10	9	10	10
Filler	4	4	2	4	4
						Dispersion agent	0.6	0.6	0.3	0.6	0.6
Water-borne preservative	0.4	0.4	0.3	0.4	0.4
						Pure water	12	12	8	12	12

Claims

1. plastics film intaglio plate reverse printing ink, is characterized in that: described plastics film intaglio plate reverse printing ink comprises component below, and component carries out proportioning according to weight part:

Waterborne polyurethane resin 22 to 36 parts;

Water-borne acrylic resin 20 to 35 parts;

Maleic acid resin 10 to 15 parts;

Flow agent 0.5 to 2.0 part;

Wetting coupling agent 0.5 to 2.5 part;

Defoamer 0.1 to 0.5 part;

Pigment 9.0 to 11 parts;

Filler 2.0 to 7.0 parts;

Dispersion agent 0.3 to 1.0 part;

Water-borne preservative 0.3 to 0.5 part;

Pure water 8.0 to 15.0 parts.

2. plastics film intaglio plate reverse printing ink according to claim 1, is characterized in that:

Described plastics film is at least one in high-isolation film, polypropylene film, polyethylene film, polyester film, nylon film, metallized film, polyvinyl chloride film, pearl film or sub-light film.

3. plastics film intaglio plate reverse printing ink according to claim 2, is characterized in that:

Described high-isolation film is PVA; Described polypropylene film is BOPP, CPP, OPP or PP; Described polyethylene film is PE, LDPE, HDPE or LLDPE; Described polyester film is PETPBT, PEN, PETG or BOPEI; Described nylon film is PA, NY or BOPA; Described metallized film is VMPET or VMCPP; Described polyvinyl chloride film is PVC or PVDC; Described pearl film is OPP; Described sub-light film is OPP or CPP.

4. the preparation method of plastics film intaglio plate reverse printing ink, is characterized in that: perform step below successively: component carries out proportioning according to weight part,

Step (3): add 0.5 to 2.5 part of wetting coupling agent in described second mixture, 9.0 to 11 parts of pigment, 0.3 to 1.0 part of dispersion agent carry out high force dispersion process;

Step (4): the material that described step (3) is obtained is through shredder process;

Step (5): detect fineness, sticking power and glossiness;

Step (7): obtain finished product with after metre filter.

5. the preparation method of plastics film intaglio plate reverse printing ink according to claim 4, is characterized in that:

In described step (4): the number of times of shredder process is 1 to 3 time.

6. the preparation method of plastics film intaglio plate reverse printing ink according to claim 4, is characterized in that:

7. the preparation method of plastics film intaglio plate reverse printing ink according to claim 6, is characterized in that:

Described high-isolation film is PVA; Described polypropylene film is BOPP, CPP, OPP or PP; Described polyethylene film is PE, LDPE, HDPE or LLDPE; Described polyester film is PET, PBT, PEN, PETG or BOPEI; Described nylon film is PA, NY or BOPA; Described metallized film is VMPET or VMCPP; Described polyvinyl chloride film is PVC or PVDC; Described pearl film is OPP; Described sub-light film is OPP or CPP.