CN107757168A - A kind of printing processing method of PE bottle caps - Google Patents
A kind of printing processing method of PE bottle caps Download PDFInfo
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- CN107757168A CN107757168A CN201710895822.4A CN201710895822A CN107757168A CN 107757168 A CN107757168 A CN 107757168A CN 201710895822 A CN201710895822 A CN 201710895822A CN 107757168 A CN107757168 A CN 107757168A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M1/00—Inking and printing with a printer's forme
- B41M1/26—Printing on other surfaces than ordinary paper
- B41M1/30—Printing on other surfaces than ordinary paper on organic plastics, horn or similar materials
- B41M1/305—Printing on other surfaces than ordinary paper on organic plastics, horn or similar materials using mechanical, physical or chemical means, e.g. corona discharge, etching or organic solvents, to improve ink retention
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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
- C09D11/00—Inks
- C09D11/02—Printing inks
- C09D11/03—Printing inks characterised by features other than the chemical nature of the binder
-
- 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
- C09D11/00—Inks
- C09D11/02—Printing inks
- C09D11/10—Printing inks based on artificial resins
- C09D11/101—Inks specially adapted for printing processes involving curing by wave energy or particle radiation, e.g. with UV-curing following the printing
-
- 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
- C09D11/00—Inks
- C09D11/02—Printing inks
- C09D11/10—Printing inks based on artificial resins
- C09D11/102—Printing inks based on artificial resins containing macromolecular compounds obtained by reactions other than those only involving unsaturated carbon-to-carbon bonds
-
- 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
- C09D11/00—Inks
- C09D11/02—Printing inks
- C09D11/10—Printing inks based on artificial resins
- C09D11/102—Printing inks based on artificial resins containing macromolecular compounds obtained by reactions other than those only involving unsaturated carbon-to-carbon bonds
- C09D11/103—Printing inks based on artificial resins containing macromolecular compounds obtained by reactions other than those only involving unsaturated carbon-to-carbon bonds of aldehydes, e.g. phenol-formaldehyde resins
-
- 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
- C09D11/00—Inks
- C09D11/02—Printing inks
- C09D11/10—Printing inks based on artificial resins
- C09D11/102—Printing inks based on artificial resins containing macromolecular compounds obtained by reactions other than those only involving unsaturated carbon-to-carbon bonds
- C09D11/104—Polyesters
-
- 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
- C09D11/00—Inks
- C09D11/02—Printing inks
- C09D11/10—Printing inks based on artificial resins
- C09D11/106—Printing inks based on artificial resins containing macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- General Chemical & Material Sciences (AREA)
- Inks, Pencil-Leads, Or Crayons (AREA)
- Printing Methods (AREA)
Abstract
The invention discloses a kind of printing processing method of PE bottle caps, comprise the following steps：（1）UV ink formulations,（2）PE bottle caps cleaning treatment,（3）The surface treatment of PE bottle caps,（4）Print curing process.The present invention has been carried out special and reasonably improved to the printing processing method of PE bottle caps, effectively enhance the quality of printing treatment, and the stripping quantity of PE bottle cap harmful substances can be reduced, enhance the safety in utilization of PE bottle caps, the great market competitiveness and application value.
Description
Technical field
The invention belongs to PE bottle cap working process technical fields, and in particular to a kind of printing processing method of PE bottle caps.
Background technology
The bottle cap of PE materials is a species common on present beverage bottle, and its is cheap, has good processing special
Property, and lower temperature resistance is good, chemical stability is strong, relatively conventional in people live.PE bottle caps generally also need after machining
Printing treatment is carried out, manufacturer, mark, explanation etc. can be printed in general above, has now just used UV ink.UV ink is one
Kind complies fully with the novel ink of low-carbon environment-friendly policy, has the advantages that rate of drying is fast, and environmental pollution is small, and printing quality is high,
It is the common raw material in existing PE bottle caps processing.Although there is UV ink good synthesis to use quality, its there are still with
The problems such as PE bottle cap adhesive strengths are not high, solvent resistance is not strong.It is existing especially with the further reinforcement of national environmental protection policy
The printing of PE bottle caps have to pass through 4 hours sterilization treatments soaked at 90 DEG C of 1800ppm peracetic acid solns, but existing market
On UV ink after sterilization treatment, serious void will occur, this seriously constrains UV ink in PE bottle caps
The application of print field.In addition some existing PE bottle caps can use some auxiliary agents in processing and manufacturing, cause in finished product bottle cap
Containing micro heavy metal, such PE bottle caps can more be easily caused the dissolution of heavy metal element by above-mentioned sterilization treatment, and then
The health and safety of product and human body can be influenceed.
The content of the invention
The purpose of the present invention is to be directed to the problem of existing, there is provided a kind of printing processing method of PE bottle caps.
The present invention is achieved by the following technical solutions：
A kind of printing processing method of PE bottle caps, comprises the following steps：
（1）UV ink formulations：
A. following material is weighed by corresponding parts by weight：2 ~ 4 parts of pigment, 1.5 ~ 2.5 parts of light triggers, 14 ~ 18 parts of precipitated calcium carbonates,
3 ~ 5 parts of nano titanium oxides, 1 ~ 2 part of defoamer, 1 ~ 2 part of levelling agent, 0.5 ~ 1 part of dispersant, 8 ~ 10 parts of propylene of neopentyl glycol two
Acid esters, 6 ~ 8 parts of trimethylolpropane trimethacrylates, 35 ~ 40 parts of compound prepolymers；
B. mixing is put into agitator tank all the components operation a weighed jointly, continuous with 800 ~ 900 revs/min of rotating speed
Taken out after 1 ~ 2h of stir process standby；
（2）PE bottle cap cleaning treatments：
Immersion oil removal treatment is carried out to PE bottle caps with electrochemical deoiling agent, after the completion of take out and use a time standby of deionized water rinsing again
With；
（3）PE bottle caps are surface-treated：
By step（2）PE bottle caps after processing are put into 20 ~ 25min of immersion treatment in phosphoric acid solution, after the completion of take out and be put into
Radiation treatment is carried out in irradiation box, is taken out after 4 ~ 6min standby；
（4）Print curing process：
By step（1）Obtained UV ink is printed onto step（3）On PE bottle caps after processing, then the PE bottle caps printed are put
Enter and be irradiated curing process into ultraviolet light curing case, after the completion of take out.
Further, step（1）The light trigger operated described in a is 2- hydroxy-2-methyl -1- phenyl -1- acetone, 1-
Any one in hydroxycyclohexyl phenyl ketone, isopropyl thioxanthone.
Further, step（1）The particle diameter of nano titanium oxide described in operation a is not more than 50nm.
Further, step（1）The preparation method of compound prepolymer described in operation a comprises the following steps：
（1）By benzoic anhydride polyester polyol and methyl acrylate according to mol ratio 1：2 ~ 2.2, which carry out mixing, is put into reactor, so
The N of its gross mass 1.8 ~ 2%, N- dimethyl benzylamines are added afterwards, and the temperature heated in holding reactor is 85 ~ 90 DEG C, is constantly stirred
Mix after 1 ~ 1.5h of reaction treatment reactant A is standby；
（2）To step（1）Reactor in add the hybrid resin of 1.9 ~ 2.1 times of reactant A gross mass, then add its total matter
The N of amount 0.4 ~ 0.6%, N- dimethyl benzylamines, 0.2 ~ 0.3% 2- TBHQs, and heat the temperature kept in reactor
Spend for 78 ~ 82 DEG C, be stirred continuously after 1.2 ~ 1.6h of reaction treatment reactant B is standby；The hybrid resin is by epoxy resin, urea
Urea formaldehyde and terpene resin are according to mass ratio 9：4：1 mixes；The hybrid resin of addition be using epoxy resin as matrix composition,
Lauxite is with the addition of again and terpene resin carries out compounding use, can effectively lift the complexity of compound prepolymer entirety chain structure
Property, improve the use quality of UV ink；
（3）To step（2）Reactor in add acrylic acid, 0.3 ~ 0.5 times of the methyl of 1.6 ~ 1.8 times of reactant B gross mass
Glycidyl acrylate, then add tetraethylammonium bromide, 0.1 ~ 0.3% 2- tert-butyl groups pair of its gross mass 1.3 ~ 1.6%
Benzenediol, and heat that to keep the temperature in reactor be 98 ~ 103 DEG C, be stirred continuously after 2.5 ~ 3h of reaction treatment take out produce it is multiple
Close prepolymer.
Further, step（1）The temperature that heating is kept stirring in tank when operating the stir process described in b is 50 ~ 55
℃。
Further, step（2）Described in electrochemical deoiling agent be acetone.
Further, step（3）Described in phosphoric acid solution in phosphoric acid mass fraction be 4 ~ 6%.
Further, step（3）Described in radiation treatment be use60Co- gamma-rays carries out radiation treatment, total agent of irradiation
Measure as 10 ~ 12kGy.
Further, step（4）Described in ultraviolet light curing case processing power be 2.5 ~ 3kW.
It is not only relevant with the quality of used UV ink to the printing treatment effect of PE bottle caps, while and and printing treatment
Technique it is relevant, existing most UV ink cause it between PE bottle caps because single, collocation into component selections use unreasonable
The characteristic such as bond strength it is poor, processing mode during printing treatment for PE bottle caps is simple, equally also result in printing effect
The problem of bad.On the other hand, the present invention has carried out improvement processing to the typography of PE bottle caps, wherein first entering to the composition of UV ink
To go improvement, with the addition of nano titanium oxide composition, the addition of this composition can strengthen the compactness of UV ink morphology structures,
Its wear-resisting, corrosion resistant, solvent resistant characteristic are improved, while the little particle of this Nano grade can lift UV ink integrally to ultraviolet light intensity
The absorption of degree, enhance light trigger uses treatment effect, shortens hardening time, improves the efficiency of processing；It with the addition of
Two kinds of neopentylglycol diacrylate, trimethylolpropane trimethacrylate compositions can adjust as diluting monomer, diluting monomer
The viscosity of UV ink, and photocuring reaction is participated in, this two kinds of components matchings can effectively reduce the internal stress of subsequent reactions, avoid
UV ink film layer volume contractions excessive the problem of influenceing adhesive strength during ultraviolet light processing, while can be lifted to film layer
Regulating power is diluted, promotes film layer more smooth after solidifying, and the crosslinking complexity between compound pre-polymer component can be lifted, is entered
One step enhances the adhesive strength between entirety and PE bottle caps；Prepolymer is the bulk composition of UV ink, which constitutes the base of film layer
This skeleton, the special compound pre-polymer composition of the present invention instead of the single esters of acrylic acid prepolymer of tradition as prepolymer
Use, this special compound prepolymer is the epoxy acrylic that a kind of chain length is longer, side chain is more, reaction active groups are abundant
Esters prepolymer, the overall tack of UV ink, solvent resistance, heat-proof corrosion resistant etc. can be obviously improved, and then improve UV oil
The use quality of ink；Then the technique of printing treatment is improved, specifically before printing treatment, PE bottle caps carried out
Surface treatment, first carries out immersion treatment with phosphoric acid solution, slight etching effect is generated to PE bottle caps, improve UV ink
Attached base, Ran Houyong60Co- gamma-rays carries out radiation treatment, improves the activity group content of PE bottle cap substrate surfaces, and then
Enhance the bond strength with UV ink.
The present invention has advantages below compared with prior art：
The present invention has been carried out special and reasonably improved to the printing processing method of PE bottle caps, effectively enhances the product of printing treatment
Matter, and can reduce the stripping quantity of PE bottle cap harmful substances, enhances the safety in utilization of PE bottle caps, the great market competitiveness and pushes away
Wide application value.
Embodiment
Embodiment 1
A kind of printing processing method of PE bottle caps, comprises the following steps：
（1）UV ink formulations：
A. following material is weighed by corresponding parts by weight：2 parts of pigment, 1.5 parts of light triggers, 14 parts of precipitated calcium carbonates, 3 parts of nanometers two
Titanium oxide, 1 part of defoamer, 1 part of levelling agent, 0.5 part of dispersant, 8 parts of neopentylglycol diacrylates, 6 parts of trimethylolpropanes
Triacrylate, 35 parts of compound prepolymers；
B. mixing is put into agitator tank all the components operation a weighed jointly, is stirred continuously with 800 revs/min of rotating speed
Taken out after processing 1h standby；
（2）PE bottle cap cleaning treatments：
Immersion oil removal treatment is carried out to PE bottle caps with electrochemical deoiling agent, after the completion of take out and use a time standby of deionized water rinsing again
With；
（3）PE bottle caps are surface-treated：
By step（2）PE bottle caps after processing are put into immersion treatment 20min in phosphoric acid solution, after the completion of take out be put into irradiation
Radiation treatment is carried out in case, is taken out after 4min standby；
（4）Print curing process：
By step（1）Obtained UV ink is printed onto step（3）On PE bottle caps after processing, then the PE bottle caps printed are put
Enter and be irradiated curing process into ultraviolet light curing case, after the completion of take out.
Further, step（1）The light trigger operated described in a is 2- hydroxy-2-methyl -1- phenyl -1- acetone.
Further, step（1）The particle diameter of nano titanium oxide described in operation a is not more than 50nm.
Further, step（1）The preparation method of compound prepolymer described in operation a comprises the following steps：
（1）By benzoic anhydride polyester polyol and methyl acrylate according to mol ratio 1：2, which carry out mixing, is put into reactor, Ran Houjia
Enter the N of its gross mass 1.8%, N- dimethyl benzylamines, and the temperature heated in holding reactor is 85 DEG C, is stirred continuously at reaction
It is standby that reactant A is obtained after reason 1h；
（2）To step（1）Reactor in add the hybrid resin of 1.9 times of reactant A gross mass, then add its gross mass
0.4% N, N- dimethyl benzylamine, 0.2% 2- TBHQs, and the temperature heated in holding reactor is 78 DEG C, no
It is standby that reactant B is obtained after disconnected stirring reaction processing 1.2h；The hybrid resin is pressed by epoxy resin, Lauxite and terpene resin
According to mass ratio 9：4：1 mixes；
（3）To step（2）Reactor in add acrylic acid, the contracting of 0.3 times of methacrylic acid of 1.6 times of reactant B gross mass
Water glyceride, then adds tetraethylammonium bromide, the 0.1% 2- TBHQs of its gross mass 1.3%, and heats holding
Temperature in reactor is 98 DEG C, is stirred continuously after reaction treatment 2.5h to take out and produces compound prepolymer.
Further, step（1）The temperature that heating is kept stirring in tank when operating the stir process described in b is 50 DEG C.
Further, step（2）Described in electrochemical deoiling agent be acetone.
Further, step（3）Described in phosphoric acid solution in phosphoric acid mass fraction be 4%.
Further, step（3）Described in radiation treatment be use60Co- gamma-rays carries out radiation treatment, total agent of irradiation
Measure as 10kGy.
Further, step（4）Described in ultraviolet light curing case processing power be 2.5kW.
Embodiment 2
A kind of printing processing method of PE bottle caps, comprises the following steps：
（1）UV ink formulations：
A. following material is weighed by corresponding parts by weight：3 parts of pigment, 2 parts of light triggers, 16 parts of precipitated calcium carbonates, 4 parts of nano-silicas
Change titanium, 1.5 parts of defoamers, 1.5 parts of levelling agents, 0.8 part of dispersant, 9 parts of neopentylglycol diacrylates, 7 parts of trihydroxy methyls third
Alkane triacrylate, 38 parts of compound prepolymers；
B. mixing is put into agitator tank all the components operation a weighed jointly, is stirred continuously with 850 revs/min of rotating speed
Taken out after processing 1.5h standby；
（2）PE bottle cap cleaning treatments：
Immersion oil removal treatment is carried out to PE bottle caps with electrochemical deoiling agent, after the completion of take out and use a time standby of deionized water rinsing again
With；
（3）PE bottle caps are surface-treated：
By step（2）PE bottle caps after processing are put into immersion treatment 23min in phosphoric acid solution, after the completion of take out be put into irradiation
Radiation treatment is carried out in case, is taken out after 5min standby；
（4）Print curing process：
By step（1）Obtained UV ink is printed onto step（3）On PE bottle caps after processing, then the PE bottle caps printed are put
Enter and be irradiated curing process into ultraviolet light curing case, after the completion of take out.
Further, step（1）The light trigger operated described in a is 1- hydroxycyclohexyl phenyl ketones.
Further, step（1）The particle diameter of nano titanium oxide described in operation a is not more than 50nm.
Further, step（1）The preparation method of compound prepolymer described in operation a comprises the following steps：
（1）By benzoic anhydride polyester polyol and methyl acrylate according to mol ratio 1：2.1, which carry out mixing, is put into reactor, then
The N of its gross mass 1.9%, N- dimethyl benzylamines are added, and the temperature heated in holding reactor is 88 DEG C, is stirred continuously reaction
It is standby that reactant A is obtained after processing 1.2h；
（2）To step（1）Reactor in add the hybrid resin of 2 times of reactant A gross mass, then add its gross mass 0.5%
N, N- dimethyl benzylamines, 0.25% 2- TBHQs, and heat keep reactor in temperature be 80 DEG C, constantly
It is standby that reactant B is obtained after stirring reaction processing 1.5h；The hybrid resin by epoxy resin, Lauxite and terpene resin according to
Mass ratio 9：4：1 mixes；
（3）To step（2）Reactor in add acrylic acid, the contracting of 0.4 times of methacrylic acid of 1.7 times of reactant B gross mass
Water glyceride, then adds tetraethylammonium bromide, the 0.2% 2- TBHQs of its gross mass 1.5%, and heats holding
Temperature in reactor is 100 DEG C, is stirred continuously after reaction treatment 2.8h to take out and produces compound prepolymer.
Further, step（1）The temperature that heating is kept stirring in tank when operating the stir process described in b is 53 DEG C.
Further, step（2）Described in electrochemical deoiling agent be acetone.
Further, step（3）Described in phosphoric acid solution in phosphoric acid mass fraction be 5%.
Further, step（3）Described in radiation treatment be use60Co- gamma-rays carries out radiation treatment, total agent of irradiation
Measure as 11kGy.
Further, step（4）Described in ultraviolet light curing case processing power be 2.8kW.
Embodiment 3
A kind of printing processing method of PE bottle caps, comprises the following steps：
（1）UV ink formulations：
A. following material is weighed by corresponding parts by weight：4 parts of pigment, 2.5 parts of light triggers, 18 parts of precipitated calcium carbonates, 5 parts of nanometers two
Titanium oxide, 2 parts of defoamers, 2 parts of levelling agents, 1 part of dispersant, 10 parts of neopentylglycol diacrylates, 8 parts of trimethylolpropane tris
Acrylate, 40 parts of compound prepolymers；
B. mixing is put into agitator tank all the components operation a weighed jointly, is stirred continuously with 900 revs/min of rotating speed
Taken out after processing 2h standby；
（2）PE bottle cap cleaning treatments：
Immersion oil removal treatment is carried out to PE bottle caps with electrochemical deoiling agent, after the completion of take out and use a time standby of deionized water rinsing again
With；
（3）PE bottle caps are surface-treated：
By step（2）PE bottle caps after processing are put into immersion treatment 25min in phosphoric acid solution, after the completion of take out be put into irradiation
Radiation treatment is carried out in case, is taken out after 6min standby；
（4）Print curing process：
By step（1）Obtained UV ink is printed onto step（3）On PE bottle caps after processing, then the PE bottle caps printed are put
Enter and be irradiated curing process into ultraviolet light curing case, after the completion of take out.
Further, step（1）The light trigger operated described in a is isopropyl thioxanthone.
Further, step（1）The particle diameter of nano titanium oxide described in operation a is not more than 50nm.
Further, step（1）The preparation method of compound prepolymer described in operation a comprises the following steps：
（1）By benzoic anhydride polyester polyol and methyl acrylate according to mol ratio 1：2.2, which carry out mixing, is put into reactor, then
The N of its gross mass 2%, N- dimethyl benzylamines are added, and the temperature heated in holding reactor is 90 DEG C, is stirred continuously at reaction
It is standby that reactant A is obtained after reason 1.5h；
（2）To step（1）Reactor in add the hybrid resin of 2.1 times of reactant A gross mass, then add its gross mass
0.6% N, N- dimethyl benzylamine, 0.3% 2- TBHQs, and the temperature heated in holding reactor is 82 DEG C, no
It is standby that reactant B is obtained after disconnected stirring reaction processing 1.6h；The hybrid resin is pressed by epoxy resin, Lauxite and terpene resin
According to mass ratio 9：4：1 mixes；
（3）To step（2）Reactor in add acrylic acid, the contracting of 0.5 times of methacrylic acid of 1.8 times of reactant B gross mass
Water glyceride, then adds tetraethylammonium bromide, the 0.3% 2- TBHQs of its gross mass 1.6%, and heats holding
Temperature in reactor is 103 DEG C, is stirred continuously after reaction treatment 3h to take out and produces compound prepolymer.
Further, step（1）The temperature that heating is kept stirring in tank when operating the stir process described in b is 55 DEG C.
Further, step（2）Described in electrochemical deoiling agent be acetone.
Further, step（3）Described in phosphoric acid solution in phosphoric acid mass fraction be 6%.
Further, step（3）Described in radiation treatment be use60Co- gamma-rays carries out radiation treatment, total agent of irradiation
Measure as 12kGy.
Further, step（4）Described in ultraviolet light curing case processing power be 3kW.
Comparative example 1
This comparative example 1 compared with Example 2, saves step（1）UV ink formulations operation a in nano titanium oxide into
Point, method and step all same in addition.
Comparative example 2
This comparative example 2 compared with Example 2, saves step（1）Trimethylolpropane tris third in UV ink formulations operation a
Olefin(e) acid ester composition, method and step all same in addition.
Comparative example 3
This comparative example 3 compared with Example 2, in the preparation process of compound prepolymer, saves the ureaformaldehyde in hybrid resin
Two kinds of compositions of resin and terpene resin, method and step all same in addition.
Comparative example 4
This comparative example 4 compared with Example 2, in step（1）UV ink formulations operation a in, with etc. mass parts acrylic acid
Methyl esters substitutes compound pre-polymer composition, method and step all same in addition.
Comparative example 5
This comparative example 5 compared with Example 2, saves step（3）PE bottle caps are surface-treated, and method and step in addition is homogeneous
Together.
Control group
The printing processing method of existing PE bottle caps.
In order to contrast effect of the present invention, to above-described embodiment 2, comparative example 1, comparative example 2, comparative example 3,
PE bottle caps after comparative example 4, comparative example 5, the processing of control group methods described carry out attribute test, specific correction data
It is as shown in table 1 below：
Table 1
| Adhesive force A（%） | Adhesive force B（%） | |
| Embodiment 2 | 97.5 | 92.7 |
| Comparative example 1 | 95.2 | 88.6 |
| Comparative example 2 | 94.1 | 83.4 |
| Comparative example 3 | 93.3 | 81.5 |
| Comparative example 4 | 92.4 | 78.2 |
| Comparative example 5 | 93.6 | 82.8 |
| Control group | 91.3 | 71.3 |
Note：Adhesive force A described in upper table 1 refers to carry out adhesive force test, institute to just irradiating the PE bottle caps after curing process
The adhesive force B stated refer to first to after curing process PE bottle caps carry out immersion treatment after, then to PE bottle caps carry out adhesive force test,
Immersion treatment is that PE bottle caps are immersed in into 1800ppm peracetic acid solns at 90 DEG C to soak 4 hours, attachment described above
Power test is to be adhered to 600# adhesive tapes in the UV ink solidification film layers on PE bottle caps, by 180 ° of direction stripping tapes, with not by
The ink area of tear-away portion divided by the UV ink solidification film layer areas of whole bottle cap printing characterize adhesive force, the bigger table of ratio
Bright adhesion effect is better.
Binding characteristic between UV ink and PE bottle caps can effectively be lifted by the inventive method it can be seen from upper table 1, strengthened
The stability of press quality, use value are higher.
In order to further contrast effect of the present invention, from the PE bottle cap conducts after above-described embodiment 2, the processing of control group method
Experimental subjects（Ensure that two methods are identical to the printing areas of PE bottle caps, thicknesses of layers etc., printing area is PE bottle caps surface
Long-pending 60%）, then PE bottle caps are put into distilled water, it is 90 DEG C that heating, which keeps distillation coolant-temperature gage, electricity consumption after immersion treatment 3h
Feel coupled plasma mass and heavy metal lead, cadmium content test are carried out to the distilled water after immersion, specific correction data is as follows
Shown in table 2：
Table 2
| Lead content（mg/L） | Cadmium content（μg/L） | |
| Embodiment 2 | 1.16 | 6.34 |
| Control group | 2.57 | 15.83 |
The inventive method printing processing method can effectively reduce the dissolution of PE bottle cap harmful elements, table it can be seen from upper table 2
The attachment bond strength between film layer and PE bottle caps after bright printing is more preferable, and the insulation blocking to PE bottle caps is better, can reduce
The side effect effect that high-temperature sterilization processing is brought, and then improve the safety in utilization of PE bottle caps.
Claims (9)
1. a kind of printing processing method of PE bottle caps, it is characterised in that comprise the following steps：
（1）UV ink formulations：
A. following material is weighed by corresponding parts by weight：2 ~ 4 parts of pigment, 1.5 ~ 2.5 parts of light triggers, 14 ~ 18 parts of precipitated calcium carbonates,
3 ~ 5 parts of nano titanium oxides, 1 ~ 2 part of defoamer, 1 ~ 2 part of levelling agent, 0.5 ~ 1 part of dispersant, 8 ~ 10 parts of propylene of neopentyl glycol two
Acid esters, 6 ~ 8 parts of trimethylolpropane trimethacrylates, 35 ~ 40 parts of compound prepolymers；
B. mixing is put into agitator tank all the components operation a weighed jointly, continuous with 800 ~ 900 revs/min of rotating speed
Taken out after 1 ~ 2h of stir process standby；
（2）PE bottle cap cleaning treatments：
Immersion oil removal treatment is carried out to PE bottle caps with electrochemical deoiling agent, after the completion of take out and use a time standby of deionized water rinsing again
With；
（3）PE bottle caps are surface-treated：
By step（2）PE bottle caps after processing are put into 20 ~ 25min of immersion treatment in phosphoric acid solution, after the completion of take out and be put into
Radiation treatment is carried out in irradiation box, is taken out after 4 ~ 6min standby；
（4）Print curing process：
By step（1）Obtained UV ink is printed onto step（3）On PE bottle caps after processing, then the PE bottle caps printed are put
Enter and be irradiated curing process into ultraviolet light curing case, after the completion of take out.
A kind of 2. printing processing method of PE bottle caps according to claim 1, it is characterised in that step（1）Operate institute in a
The light trigger stated is 2- hydroxy-2-methyl -1- phenyl -1- acetone, 1- hydroxycyclohexyl phenyl ketones, isopropyl thioxanthone
In any one.
A kind of 3. printing processing method of PE bottle caps according to claim 1, it is characterised in that step（1）Operate institute in a
The particle diameter for the nano titanium oxide stated is not more than 50nm.
A kind of 4. printing processing method of PE bottle caps according to claim 1, it is characterised in that step（1）Operate institute in a
The preparation method for the compound prepolymer stated comprises the following steps：
（1）By benzoic anhydride polyester polyol and methyl acrylate according to mol ratio 1：2 ~ 2.2, which carry out mixing, is put into reactor, so
The N of its gross mass 1.8 ~ 2%, N- dimethyl benzylamines are added afterwards, and the temperature heated in holding reactor is 85 ~ 90 DEG C, is constantly stirred
Mix after 1 ~ 1.5h of reaction treatment reactant A is standby；
（2）To step（1）Reactor in add the hybrid resin of 1.9 ~ 2.1 times of reactant A gross mass, then add its total matter
The N of amount 0.4 ~ 0.6%, N- dimethyl benzylamines, 0.2 ~ 0.3% 2- TBHQs, and heat the temperature kept in reactor
Spend for 78 ~ 82 DEG C, be stirred continuously after 1.2 ~ 1.6h of reaction treatment reactant B is standby；The hybrid resin is by epoxy resin, urea
Urea formaldehyde and terpene resin are according to mass ratio 9：4：1 mixes；
（3）To step（2）Reactor in add acrylic acid, 0.3 ~ 0.5 times of the methyl of 1.6 ~ 1.8 times of reactant B gross mass
Glycidyl acrylate, then add tetraethylammonium bromide, 0.1 ~ 0.3% 2- tert-butyl groups pair of its gross mass 1.3 ~ 1.6%
Benzenediol, and heat that to keep the temperature in reactor be 98 ~ 103 DEG C, be stirred continuously after 2.5 ~ 3h of reaction treatment take out produce it is multiple
Close prepolymer.
A kind of 5. printing processing method of PE bottle caps according to claim 1, it is characterised in that step（1）Operate institute in b
The temperature that heating is kept stirring in tank during the stir process stated is 50 ~ 55 DEG C.
A kind of 6. printing processing method of PE bottle caps according to claim 1, it is characterised in that step（2）Described in
Electrochemical deoiling agent is acetone.
A kind of 7. printing processing method of PE bottle caps according to claim 1, it is characterised in that step（3）Described in
The mass fraction of phosphoric acid is 4 ~ 6% in phosphoric acid solution.
A kind of 8. printing processing method of PE bottle caps according to claim 1, it is characterised in that step（3）Described in
Radiation treatment is to use60Co- gamma-rays carries out radiation treatment, and the accumulated dose of irradiation is 10 ~ 12kGy.
A kind of 9. printing processing method of PE bottle caps according to claim 1, it is characterised in that step（4）Described in
The power of ultraviolet light curing case processing is 2.5 ~ 3kW.
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| CN106480416A (en) * | 2016-09-28 | 2017-03-08 | 南宁市日建塑料包装有限责任公司 | A kind of method improving ink adhesion in plastic printing product |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1393344A (en) * | 2001-06-22 | 2003-01-29 | 李光明 | Offset print technology for PP or PE plastic surface |
| CN103483905A (en) * | 2013-08-22 | 2014-01-01 | 广东理想彩色印务有限公司 | Ultraviolet (UV) curing ink and preparation method thereof |
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