CN109880436A - A kind of plastic film flexographic printing water-based ink - Google Patents
A kind of plastic film flexographic printing water-based ink Download PDFInfo
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- CN109880436A CN109880436A CN201910240192.6A CN201910240192A CN109880436A CN 109880436 A CN109880436 A CN 109880436A CN 201910240192 A CN201910240192 A CN 201910240192A CN 109880436 A CN109880436 A CN 109880436A
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Abstract
The present invention relates to a kind of plastic film flexographic printing water-based inks, the water-based ink includes following components: water-and acrylate lotion 45%-48%, aqueous dicyclopentadiene acrylate lotion 10%-12%, pigment 15%-18%, defoaming agent 0.5%-0.8%, dispersing agent 0.8%-1.0%, substrate wetting agents 0.5%-0.8%, levelling agent 0.5%-0.8%, fumed silica 0.5%-1.0%, and surplus is water and pH stabilizer.Gained water-based ink items basic performance is excellent, meet the requirement of flexographic printing, printing adhesive force on plastic film especially polyolefin film is big, adhesion-tight degree is high, gained ink film strength is high, no water wave phenomenon, and with excellent anti-dry/wet friction, anti-rubbing property and resistance to marring, printing quality is high, prints suitable for by the package of stock of plastic film.
Description
Technical field
The invention belongs to water-based ink technical fields, and in particular to a kind of plastic film flexographic printing water-based ink.
Background technique
As the fast development of industrial sector and living standard greatly improve, people increasingly pay attention to environmental protection and green
Color safety.The VOCs discharge amount of packages printing industry increases year by year, gradually causes the concern of people；Traditional Packing printing industry face
Face transition pressure, under the guidance of " green printing " concept, flexography process and water-based ink are developed.
Water-based ink be based on water, by aqueous high molecular compound as binder, with pigment, auxiliary agent through design,
A kind of environmentally friendly printing ink made of allotment, grinding stirring and processing.Compared with traditional solvent-based ink, water-based ink with
Water replaces solvent of the tradition based on benzene class, and having can be reduced VOCs discharge, reduce printed matter surface residual poisonous substance, reduce resource
Consumption reduces environmentally friendly cost, improves the characteristics of operating environment safety, packing and decorating printing is mainly used in, especially to peace
Entirely, the package printed matters such as environmental protection, health requirements high food, tobacco and wine, toy for children.
Water-based ink is mainly made of waterborne binder, pigment, auxiliary agent and four part of solvent.Wherein, waterborne binder master
If water-base resin, including water-soluble resin, water-soluble gum resin and water dispersed resin (emulsion polymer), be ink main body at
Point, the basic framework of printing film layer is constituted, there is very big shadow to the viscosity of ink, adhesive force, gloss, drying and printability
It rings.Pigment different color for rendering, satisfies the use demand.Auxiliary agent mainly have defoaming agent, stabilizer, wetting agent, thickener,
Levelling agent, coalescing agent etc. improve ink film performance for improving printability.Solvent is based on water, or a small amount of alcohols of addition helps
Solvent adjusts viscosity and rate of drying for dispersing binder and colorant.
Flexographic printing is a kind of direct relief printing plate rotary printing mode, can print to liquid or paste ink biography on stock,
Have the characteristics that printable fabric is extensive, printing effect is good, machine construction is simple, printing format is flexible, high speed, at low cost, soft version
Printing technology is especially suitable for using water-based ink because ink consumption amount is few.Flexographic printing water-based ink is according to the difference of stock
Be divided into paper base dielectric printing to be used with non-absorbing dielectric printing: paper base medium includes art paper, corrugated paper, newspaper, sanitary napkins
Paper etc., water-based ink used is almost the same in the selection of binder, can meet use by adjusting host and additive and want
It asks.Non-absorbing medium such as plastic film occupies very important status in packages printing industry, at present the maximum polyene of usage amount
Hydrocarbon film, plastic film cause its surface can lower, solubility because of factors such as its molecular structure, polar group and crystallization degrees
Parameter is small, surface is smooth, is easy to produce electrostatic, and the surface tension of water is larger, and water-based ink is in Plastic film surface adhesive force
It is small, attachment fastness is inadequate, sprawls uneven, hiding rare is low, slow drying speed, and printing effect is bad, to limit soft version print
Fast development of the brush water-based ink in plastic film packaging industry.
Summary of the invention
The object of the present invention is to provide a kind of plastic film flexographic printing water-based inks, and it is thin in plastics to improve water-based ink
Adhesive force on film, printing effect are good.
To achieve the goals above, the technical scheme adopted by the invention is as follows:
A kind of plastic film flexographic printing water-based ink, includes the following components'mass percentage: water-and acrylate
Lotion 45%-48%, aqueous dicyclopentadiene acrylate lotion 10%-12%, pigment 15%-18%, defoaming agent 0.5%-
0.8%, dispersing agent 0.8%-1.0%, substrate wetting agents 0.5%-0.8%, levelling agent 0.5%-0.8%, fumed silica
0.5%-1.0%, surplus are water and pH stabilizer；The pH value of the water-based ink is 8.5-9.0.
The water-and acrylate lotion is by raw material monomer butyl acrylate, methyl methacrylate, acrylic acid, propylene
Sour hydroxypropyl acrylate and buffer, emulsifier, initiator are prepared by emulsion polymerization, solid content 40%-42%.
The raw material monomer methyl methacrylate, butyl acrylate, acrylic acid, hydroxypropyl acrylate mass ratio be
25:(13-14):(1.5-2.0):(0.5-1.0)。
Emulsifier used in the water-and acrylate lotion is NP-10 and the mass ratio of SE-10N is 1:(0.5-0.55)
Mixture；The dosage of the emulsifier is the 4%-5% of raw material monomer gross mass.
Further, the water-and acrylate lotion is prepared by following methods:
Raw material monomer methyl methacrylate, butyl acrylate, acrylic acid, the hydroxypropyl acrylate is taken to be according to mass ratio
25:(13-14): (1.5-2.0): the ratio of (0.5-1.0) is uniformly mixed, and obtains monomer mixture；
A small amount of monomer mixture and emulsifier, buffer are added to the water, 76 DEG C -78 DEG C are heated to after mixing, is added few
Initiator is measured, 82 DEG C -84 DEG C is warming up to and is reacted, residual monomer mixture and initiator are added after 30-40min, is warming up to
88 DEG C of -90 DEG C of reaction 2-3h, after be cooled to room temperature, adjusting pH value is 7.5-8.0, and it is 40%-42% that solid content, which is obtained by filtration,
Water-and acrylate lotion to get.
The buffer is sodium bicarbonate, and dosage is the 1.0%-1.5% of monomer mixture gross mass；The initiator is
Ammonium persulfate, dosage are the 0.4%-0.5% of monomer mixture gross mass.
The aqueous dicyclopentadiene acrylate lotion is by dicyclopentadiene acrylate resin, hydroxy ethyl fiber
Made of element, emulsifier and isopropanol are dispersed in water, solid content 40%-42%.
Emulsifier used in the aqueous dicyclopentadiene acrylate lotion is NP-10 and the mass ratio of SDS is 1:
The mixture of (0.65-0.70)；The dosage of the emulsifier is that dicyclopentadiene acrylate resin quality is 4%-5%.
The hydroxyethyl cellulose is 3%- in the mass percent of the aqueous dicyclopentadiene acrylate lotion of gained
4%.
The isopropanol is 5%-6% in the mass percent of the aqueous dicyclopentadiene acrylate lotion of gained.
Further, the aqueous dicyclopentadiene acrylate lotion is prepared by following methods:
Dicyclopentadiene acrylate resin, hydroxyethyl cellulose, emulsifier and isopropanol is taken to be added to the water, shear agitation
And grind, obtain solid content be 40%-42% aqueous dicyclopentadiene acrylate lotion to get.The grinding, which refers to, adopts
Ball milling, speed 900-1000r/min, time 2-2.5h are carried out with planetary ball mill.
The pH stabilizer is triethanolamine.
Above-mentioned plastic film with flexographic printing water-based ink is prepared by following methods: by water-and acrylate lotion,
Aqueous dicyclopentadiene acrylate lotion and pigment, defoaming agent, dispersing agent are added in the water of part, after stirring is pre-dispersed, then plus
Enter substrate wetting agents, levelling agent, fumed silica and remaining water, be dispersed with stirring and filtered after grinding, with pH stabilizer tune
Save system pH be 8.5-9.0 to get.
Further, the preparation method of the plastic film flexographic printing water-based ink can be with are as follows: will be aqueous bicyclic
Pentadiene acrylic acid ester emulsion and pigment, dispersing agent, defoaming agent are added in the water of part, and after stirring is pre-dispersed, clipped stirring is simultaneously
Mill base is made in grinding；Gained mill base and water-and acrylate lotion, substrate wetting agents, levelling agent, fumed silica are added again
Enter in remaining water, filtered after being dispersed with stirring, with pH stabilizer adjust pH value to 8.5-9.0 to get.
The grinding, which refers to, carries out ball milling, speed 700-800r/min, time 2-2.5h using planetary ball mill.
Plastic film of the invention flexographic printing water-based ink is replaced using aqueous dicyclopentadiene acrylate lotion
Least a portion of water-and acrylate lotion, i.e., it is multiple using water-and acrylate lotion and aqueous dicyclopentadiene acrylate lotion
With as binder, the two is acrylic emulsion, and compatibility is good, is easily dispersed.Due to dicyclopentadiene acrylate
Containing unsaturated cyclopentene structure in molecule, complicated molecular structure is tangled with acrylate molecule, three-dimensional space crosslinking is formed,
Improve water-based ink internal adhesion and cohesive force；Unsaturated ring amylene structure in dicyclopentadiene acrylate molecule,
Similar to the plastic film of polyolefins to mix, when being in contact with surface of the stock, affinity is stronger, it is easier to diffusion attachment and
It uniformly sprawls, contact area is big, and printing effect is good, is not likely to produce water wave phenomenon；In ink film solidification process, dicyclopentadiene third
Unsaturated ring amylene structure in olefin(e) acid ester molecule can be oxidized to cyclopentadienyl alcohol with the oxygen collision in environment or in ink, contain
Hydroxyl increase the adhesive force and attachment fastness of ink film film layer and plastic film substrate after solidifying, improve printing ink film
Rub resistance energy.Simultaneously as the cure shrinkage of dicyclopentadiene acrylate is low, the ink film consistency after solidification is high, firmly
Degree is big, and intensity is high, to improve the rub resistance and adhesion strength of ink film.
Plastic film of the invention flexographic printing water-based ink, using water-and acrylate lotion and aqueous bicyclic penta 2
Alkene acrylate latex composite compounding is as binder, when preparing water-and acrylate lotion, using methyl methacrylate, propylene
These four monomers of acid butyl ester, acrylic acid, hydroxypropyl acrylate are as raw material, scientific design monomer ratio.Methyl methacrylate
As hard monomer, it is mainly used for improving adhesive force, hardness and the resistance to soiling of acrylate polymer；Butyl acrylate is as soft list
Body is mainly used for improving the flexibility of acrylate polymer, improves filming performance；Acrylic acid is as function monomer, Ji Nengti
The oil resistivity of high acrylate polymer, solvent-resisting, moreover it is possible to by being crosslinked the adhesive force for improving acrylate polymer, hardness
And wearability, hydroxypropyl acrylate is as function monomer, for enhancing crosslinked polymer ability to cure, and the hydroxyl having using it
Base reaches better water-soluble effect.Gained water-and acrylate lotion has good dispersibility and film forming, suitable for soft
Version printing water-based ink, glass transition temperature is low, and rate of drying is fast, and film-formation result is good.
Plastic film of the invention flexographic printing water-based ink, using water-and acrylate lotion and aqueous bicyclic penta 2
Alkene acrylate latex composite compounding is as binder, is by bicyclic penta 2 when preparing aqueous dicyclopentadiene acrylate lotion
Made of alkene acrylate, hydroxyethyl cellulose, emulsifier and isopropanol are dispersed in water, isopropanol is helped as cosolvent
Dispersion is helped, hydroxyethyl cellulose enhances emulsion intercalation method as protecting colloid substance.
The present invention using water-and acrylate lotion and aqueous dicyclopentadiene acrylate latex composite compounding as binder,
It is aided with defoaming agent, dispersing agent, substrate wetting agents, levelling agent, fumed silica and pH stabilizer, is mixed with pigment and water
Flexographic printing water-based ink, gained water-based ink items basic performance is excellent, and storage stability is qualified, meets flexographic printing water
The requirement of property ink；Flexographic printing water-based ink of the invention is at plastic film (especially polyolefin film, such as PP film)
On printing adhesive force it is big, adhesion-tight degree is high, and gained ink film intensity is high, and printed matter is without water wave phenomenon, and with excellent anti-
Dry/wet friction, anti-rubbing property and resistance to marring, printing quality is high, suitable for using plastic film as the package of stock
Printing.
Plastic film of the invention with flexographic printing water-based ink in the preparation, first by aqueous dicyclopentadiene acrylate
Lotion and pigment, dispersing agent, defoaming agent are added in the water of part, stir pre-dispersed rear shear agitation and mill base is made in grinding, then will
Gained mill base and water-and acrylate lotion and remaining ingredient are mixed with water-based ink, and the dispersion effect of this method is good, ink
Particle is uniformly dispersed, not easy to reunite and precipitating；Gained water-based ink performance is stablized, and storage time is long, and using effect is good；This method
Simple process, it is easy to operate, it is suitble to promote the use of.
Specific embodiment
The present invention is described further With reference to embodiment.
In specific embodiment, when modulating water-based ink, pigment used is phthalocyanine blue BGS, commercial goods；Defoaming used
Agent is Digao TEGO Twin 4000, commercial goods；Dispersing agent used is Digao TEGO Dispers 760W dispersing agent, commercially available
Commodity；Substrate wetting agents used are Digao TEGO DO75 wetting agent, commercial goods；Levelling agent used is Digao TEGO
Glide100 levelling agent, commercial goods.
In specific embodiment, dicyclopentadiene acrylate resin used is commercial goods, DCPA L-6101, density
For 1.1g/cm3, viscosity is 20cps (25 DEG C), acid value≤2mgKOH (25 DEG C).Hydroxyethyl cellulose used is commercial goods, pottery
Family name (HEC) QP-52000H.
Embodiment 1
The plastic film of the present embodiment flexographic printing water-based ink, consists of the following mass percentage components: aqueous
Acrylic acid ester emulsion 45%, aqueous dicyclopentadiene acrylate lotion 12%, pigment 17%, defoaming agent 0.5%, dispersing agent
0.9%, substrate wetting agents 0.7%, levelling agent 0.8%, fumed silica 0.8%, surplus are three ethyl alcohol of water and pH stabilizer
Amine, the pH value of the water-based ink are 8.5-9.0.
The preparation method of the plastic film of the present embodiment flexographic printing water-based ink, comprising the following steps:
1) water-and acrylate lotion is prepared:
Raw material monomer methyl methacrylate, butyl acrylate, acrylic acid, the hydroxypropyl acrylate is taken to be according to mass ratio
The ratio of 25:13:1.5:0.5 is uniformly mixed, and obtains monomer mixture；
1/10 monomer mixture and the first emulsifier, buffer sodium bicarbonate are added to the water, 76 DEG C are heated to after mixing,
1/5 initiator ammonium persulfate is added, is warming up to 82 DEG C and is reacted, residual monomer mixture and initiator are added after 40min, rises
Temperature to 88 DEG C of reaction 3h, after be cooled to room temperature, adjusting pH value with ammonium hydroxide is 8.0, and aqueous third that solid content is 40% is obtained by filtration
Olefin(e) acid ester lotion, it is spare；
Wherein, the mixture that first emulsifier is NP-10 and the mass ratio of SE-10N is 1:0.50, the first emulsifier
Dosage be monomer mixture gross mass 5%；The buffer dosage is the 1.5% of monomer mixture gross mass；Initiator
Dosage is the 0.5% of monomer mixture gross mass；
2) aqueous dicyclopentadiene acrylate lotion is prepared:
It takes dicyclopentadiene acrylate resin, hydroxyethyl cellulose, the second emulsifier and isopropanol to be added to the water, shears
Stirring is placed in planetary ball mill and grinds 2h with the speed of 1000r/min, obtains aqueous bicyclic penta 2 that solid content is 40%
Alkene acrylic acid ester emulsion, it is spare；
Wherein, the hydroxyethyl cellulose is 3.0% in the mass percent of aqueous dicyclopentadiene acrylate lotion；
The mixture that second emulsifier is NP-10 and the mass ratio of SDS is 1:0.65, dosage are dicyclopentadiene acrylate tree
Lipid amount is 4%；The isopropanol is 5% in the mass percent of aqueous dicyclopentadiene acrylate lotion；
3) water-based ink is deployed:
1/2 water is added in aqueous dicyclopentadiene acrylate lotion obtained by step 2) and pigment, dispersing agent, defoaming agent
In, after stirring is pre-dispersed, after clipped stirring, it is placed in planetary ball mill and color is made with the speed grinding 2.5h of 800r/min
Slurry；Gained mill base and water-and acrylate lotion, substrate wetting agents, levelling agent, fumed silica obtained by step 1) are added again
Enter in remaining water, with 200 mesh filter-cloth filterings after being dispersed with stirring, adjusts pH value to 8.5-9.0 to get the plastics with pH stabilizer
Film flexographic printing water-based ink.
Embodiment 2
The plastic film of the present embodiment flexographic printing water-based ink, consists of the following mass percentage components: aqueous
Acrylic acid ester emulsion 48%, aqueous dicyclopentadiene acrylate lotion 10%, pigment 17%, defoaming agent 0.6%, dispersing agent
1.0%, substrate wetting agents 0.6%, levelling agent 0.6%, fumed silica 0.9%, surplus are three ethyl alcohol of water and pH stabilizer
Amine, the pH value of the water-based ink are 8.5-9.0.
The preparation method of the plastic film of the present embodiment flexographic printing water-based ink, comprising the following steps:
1) water-and acrylate lotion is prepared:
Raw material monomer methyl methacrylate, butyl acrylate, acrylic acid, the hydroxypropyl acrylate is taken to be according to mass ratio
The ratio of 25:13.5:1.7:0.8 is uniformly mixed, and obtains monomer mixture；
1/10 monomer mixture and the first emulsifier, buffer sodium bicarbonate are added to the water, 78 DEG C are heated to after mixing,
1/5 initiator ammonium persulfate is added, is warming up to 84 DEG C and is reacted, residual monomer mixture and initiator are added after 35min, rises
Temperature to 90 DEG C of reaction 2h, after be cooled to room temperature, adjusting pH value with ammonium hydroxide is 8.0, and aqueous third that solid content is 41% is obtained by filtration
Olefin(e) acid ester lotion, it is spare；
Wherein, the mixture that first emulsifier is NP-10 and the mass ratio of SE-10N is 1:0.55, the first emulsifier
Dosage be monomer mixture gross mass 4.5%；The buffer dosage is the 1.2% of monomer mixture gross mass；Cause
Agent dosage is the 0.45% of monomer mixture gross mass；
2) aqueous dicyclopentadiene acrylate lotion is prepared:
It takes dicyclopentadiene acrylate resin, hydroxyethyl cellulose, the second emulsifier and isopropanol to be added to the water, shears
Stirring is placed in planetary ball mill and grinds 2.5h with the speed of 900r/min, obtains aqueous bicyclic penta 2 that solid content is 41%
Alkene acrylic acid ester emulsion, it is spare；
Wherein, the hydroxyethyl cellulose is 3.5% in the mass percent of aqueous dicyclopentadiene acrylate lotion；
The mixture that second emulsifier is NP-10 and the mass ratio of SDS is 1:0.70, dosage are dicyclopentadiene acrylate tree
Lipid amount is 4.5%；The isopropanol is 5.5% in the mass percent of aqueous dicyclopentadiene acrylate lotion；
3) water-based ink is deployed:
1/2 water is added in aqueous dicyclopentadiene acrylate lotion obtained by step 2) and pigment, dispersing agent, defoaming agent
In, after stirring is pre-dispersed, after clipped stirring, it is placed in planetary ball mill and mill base is made with the speed grinding 2h of 800r/min；
Water-and acrylate lotion, substrate wetting agents obtained by gained mill base and step 1), levelling agent, fumed silica are added again surplus
Yu Shuizhong adjusts pH value to 8.5-9.0 to get the plastic film with pH stabilizer with 200 mesh filter-cloth filterings after being dispersed with stirring
With flexographic printing water-based ink.
Embodiment 3
The plastic film of the present embodiment flexographic printing water-based ink, consists of the following mass percentage components: aqueous
Acrylic acid ester emulsion 46%, aqueous dicyclopentadiene acrylate lotion 11%, pigment 17%, defoaming agent 0.7%, dispersing agent
0.8%, substrate wetting agents 0.8%, levelling agent 0.5%, fumed silica 1.0%, surplus are three ethyl alcohol of water and pH stabilizer
Amine, the pH value of the water-based ink are 8.5-9.0.
The preparation method of the plastic film of the present embodiment flexographic printing water-based ink, comprising the following steps:
1) water-and acrylate lotion is prepared:
Raw material monomer methyl methacrylate, butyl acrylate, acrylic acid, the hydroxypropyl acrylate is taken to be according to mass ratio
The ratio of 25:14:2.0:1.0 is uniformly mixed, and obtains monomer mixture；
1/10 monomer mixture and the first emulsifier, buffer sodium bicarbonate are added to the water, 77 DEG C are heated to after mixing,
1/5 initiator ammonium persulfate is added, is warming up to 83 DEG C and is reacted, residual monomer mixture and initiator are added after 30min, rises
Temperature to 89 DEG C of reaction 2.5h, after be cooled to room temperature, adjusting pH value with ammonium hydroxide is 8.0, be obtained by filtration solid content be 42% it is aqueous
Acrylic acid ester emulsion, it is spare；
Wherein, the mixture that first emulsifier is NP-10 and the mass ratio of SE-10N is 1:0.50, the first emulsifier
Dosage be monomer mixture gross mass 4%；The buffer dosage is the 1.0% of monomer mixture gross mass；Initiator
Dosage is the 0.4% of monomer mixture gross mass；
2) aqueous dicyclopentadiene acrylate lotion is prepared:
It takes dicyclopentadiene acrylate resin, hydroxyethyl cellulose, the second emulsifier and isopropanol to be added to the water, shears
Stirring is placed in planetary ball mill and grinds 2.5h with the speed of 1000r/min, obtains aqueous bicyclic penta that solid content is 42%
Diene acrylic acid ester emulsion, it is spare；
Wherein, the hydroxyethyl cellulose is 4% in the mass percent of aqueous dicyclopentadiene acrylate lotion；Institute
The mixture that the second emulsifier is NP-10 and the mass ratio of SDS is 1:0.70 is stated, dosage is dicyclopentadiene acrylate resin
Quality is 5%；The isopropanol is 6% in the mass percent of aqueous dicyclopentadiene acrylate lotion；
3) water-based ink is deployed:
1/2 water is added in aqueous dicyclopentadiene acrylate lotion obtained by step 2) and pigment, dispersing agent, defoaming agent
In, after stirring is pre-dispersed, after clipped stirring, it is placed in planetary ball mill and color is made with the speed grinding 2.5h of 700r/min
Slurry；Gained mill base and water-and acrylate lotion, substrate wetting agents, levelling agent, fumed silica obtained by step 1) are added again
Enter in remaining water, with 200 mesh filter-cloth filterings after being dispersed with stirring, adjusts pH value to 8.5-9.0 to get the plastics with pH stabilizer
Film flexographic printing water-based ink.
Experimental example
Basic performance and service performance of this experimental example to plastic film flexographic printing water-based ink obtained by embodiment 1-3
It is detected.The results are shown in Table 1.
In table 1, the water-based ink of comparative example consists of the following mass percentage components: water-and acrylate lotion
57%, pigment 17%, defoaming agent 0.5%, dispersing agent 0.9%, substrate wetting agents 0.7%, levelling agent 0.8%, gas phase titanium dioxide
Silicon 0.8%, surplus are water and pH stabilizer triethanolamine, and the pH value of the water-based ink is 8.5-9.0.The same embodiment of preparation method
1；With the water-based ink of comparative example not property of water-bearing dicyclopentadiene acrylate lotion is only that in place of the difference of embodiment 1.
It is stock with plastic film (PP film, 15 μm thick, no primary coat), using printability instrument and embodiment 1-3, right
The water-based ink preparation detection sample of ratio: printing pressure 150N, reticulate pattern roller pressure are 250N, print speed printing speed 0.3m/s, net
Line roller screen frequency is 200dpi.
In resistance to dry friction detection method, the setup parameter of frictional testing machine is printed are as follows: 85rpm, 21b clump weight, friction
50 times；It is evaluated using rub resistance of the density decay rate to water-based ink, density decay rate is smaller, and crocking resistance is got over
It is good.Density decay rate=(printed patterns density after printed patterns density-friction before rubbing)/preceding printed patterns density of friction ×
100%.In moisture-proof frictional property detection method, it will test after sample dips in water and detected again, method is same as above.
Rub resistance detection method: taking length is that the detection sample of 10cm is placed between two hands, is rubbed, is observed with constant force
Printed patterns density decay situation, record printed patterns density decay rate reach 10% rubbing number.
In resistance to marring detection method, the initial load for drawing ring is that 100g is at least moved with the speed stroke of 6mm/s
80mm；If ink film is not scratched, successively continue to test with biggish load (50g increment), until ink film is scratched, every kind is examined
Test sample respectively carries out 5 tests, and the minimum load for as a result causing ink film to scratch at least 2 times indicates.
The performance test results of plastic film flexographic printing water-based ink obtained by 1 embodiment 1-3 of table
As it can be seen from table 1 plastic film obtained by embodiment 1-3 is with the pH value of flexographic printing water-based ink in 8.60-
Between 8.90, viscosity is in 45s or so under the conditions of 25 DEG C, and surface tension is between 36-38mN/m, and fineness is 10-12 μm, tinting strength, tinting power
>=98.70%, glossiness is not less than 88.60%, and first stemness is 100-102mm/90s, and storage stability is qualified.Testing result table
Bright, water-based ink items basic performance of the invention is excellent, meets the requirement of flexographic printing water-based ink.
It is only that binder is different with water-and acrylate lotion from comparative example, the flexographic printing water-based ink of embodiment 1-3
The water-and acrylate lotion that gross mass 10%-12% is replaced with aqueous dicyclopentadiene acrylate lotion, thus using water
Property acrylic acid ester emulsion and aqueous dicyclopentadiene acrylate latex composite compounding be used as binder, raising water-based ink it is thin in plastics
The adhesive force of film surface flexographic printing.
As it can be seen from table 1 attachment fastness of the flexographic printing water-based ink of embodiment 1-3 on PP film is from comparative example
90.01% be increased to 99% or so.In rub resistance test experience, the flexographic printing water-based ink of embodiment 1-3 exists
Density decay under DRY SLIDING is only 3.40%-3.71%, and the density decay under the conditions of wet friction is only 5.17%-
5.48%, well below the 7.95% of comparative example and 11.72%.In rub resistance test experience, the ink film of comparative example is only
It is rubbed by 19 times, density decay reaches 10% or more；And use ink film obtained by the water-based ink flexographic printing of embodiment 1-3
Rubbing number under similarity condition reaches 38 times or more, and anti-rubbing performance is more than doubled.It is detected in resistance to marring real
In testing, the minimum load that scratches that the ink film of comparative example can be born is 200g, and uses the water-based ink flexographic printing of embodiment 1-3
The minimum load that scratches that gained ink film can be born under similarity condition is 500g, is greatlyd improve relative to comparative example.On
State service performance testing result show flexographic printing water-based ink of the invention plastic film (especially polyolefin film, such as
PP film) printing adhesive force it is big, adhesion-tight degree is high, and gained ink film strength is high, and gained printed matter has excellent without water wave
Anti- dry/wet friction, anti-rubbing property and resistance to marring, printing quality is high, suitable for using plastic film as the packet of stock
The printing of dress product.
Claims (9)
1. a kind of plastic film flexographic printing water-based ink, it is characterised in that: include the following components'mass percentage: aqueous
Acrylic acid ester emulsion 45%-48%, aqueous dicyclopentadiene acrylate lotion 10%-12%, pigment 15%-18%, defoaming
Agent 0.5%-0.8%, dispersing agent 0.8%-1.0%, substrate wetting agents 0.5%-0.8%, levelling agent 0.5%-0.8%, gas phase
Silica 0.5%-1.0%, surplus are water and pH stabilizer；The pH value of the water-based ink is 8.5-9.0.
2. plastic film according to claim 1 flexographic printing water-based ink, it is characterised in that: the water soluble acrylic acid
Ester lotion is by raw material monomer butyl acrylate, methyl methacrylate, acrylic acid, hydroxypropyl acrylate and buffer, emulsification
Agent, initiator are prepared by emulsion polymerization, solid content 40%-42%.
3. plastic film according to claim 2 flexographic printing water-based ink, it is characterised in that: the raw material monomer first
Base methyl acrylate, butyl acrylate, acrylic acid, hydroxypropyl acrylate mass ratio be 25:(13-14): (1.5-2.0):
(0.5-1.0)。
4. plastic film according to claim 2 flexographic printing water-based ink, it is characterised in that: the water soluble acrylic acid
Emulsifier used in ester lotion is NP-10 and the mass ratio of SE-10N is 1:(0.5-0.55) mixture；The emulsifier
Dosage is the 4%-5% of raw material monomer gross mass.
5. plastic film according to claim 1 flexographic printing water-based ink, it is characterised in that: described aqueous bicyclic penta
Diene acrylic acid ester emulsion is to be dispersed in dicyclopentadiene acrylate resin, hydroxyethyl cellulose, emulsifier and isopropanol
Made of in water, solid content 40%-42%.
6. plastic film according to claim 5 flexographic printing water-based ink, it is characterised in that: described aqueous bicyclic penta
Emulsifier used in diene acrylic acid ester emulsion is NP-10 and the mass ratio of SDS is 1:(0.65-0.70) mixture；It is described
The dosage of emulsifier is that dicyclopentadiene acrylate resin quality is 4%-5%.
7. plastic film according to claim 5 flexographic printing water-based ink, it is characterised in that: the hydroxy ethyl fiber
Element is 3%-4% in the mass percent of the aqueous dicyclopentadiene acrylate lotion of gained.
8. plastic film according to claim 5 flexographic printing water-based ink, it is characterised in that: the isopropanol is in institute
The mass percent for obtaining aqueous dicyclopentadiene acrylate lotion is 5%-6%.
9. plastic film according to claim 1 flexographic printing water-based ink, it is characterised in that: the pH stabilizer is
Triethanolamine.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110272654A (en) * | 2019-07-09 | 2019-09-24 | 武汉威仕包装材料有限公司 | A kind of preparation process of aqueous flexible plate base gravure ink |
| CN111231532A (en) * | 2020-03-16 | 2020-06-05 | 扬州云翰塑料包装有限公司 | Environment-friendly water-based gravure printing process for plastic packaging bag |
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| US20140058031A1 (en) * | 2010-12-20 | 2014-02-27 | Dsm Ip Assets B.V. | Aqueous bio-renewable vinyl polymer composition |
| CN106497222A (en) * | 2016-10-25 | 2017-03-15 | 中国印刷科学技术研究院 | A kind of full water-based plastic flexographic ink and preparation method thereof |
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| CN102190990A (en) * | 2010-03-08 | 2011-09-21 | 上海奇想青晨新材料科技股份有限公司 | Water-based printing ink emulsion for plastic foil, and preparation method thereof |
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| CN111231532A (en) * | 2020-03-16 | 2020-06-05 | 扬州云翰塑料包装有限公司 | Environment-friendly water-based gravure printing process for plastic packaging bag |
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Application publication date: 20190614 |