CN103351704B - A kind of production equipment special of liquid crystal anti-counterfeit pigment - Google Patents
A kind of production equipment special of liquid crystal anti-counterfeit pigment Download PDFInfo
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- CN103351704B CN103351704B CN201310231584.9A CN201310231584A CN103351704B CN 103351704 B CN103351704 B CN 103351704B CN 201310231584 A CN201310231584 A CN 201310231584A CN 103351704 B CN103351704 B CN 103351704B
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Abstract
The present invention relates to a kind of production equipment special of liquid crystal anti-counterfeit pigment, comprise feeding device, hot melt aligning device, UV solidification equipment, peel off shredding unit and control device, control device is for controlling the operation of whole production unit, lower base carries out dip-coating by feeding device in the paste mixture of liquid crystal anti-counterfeit pigment, then hot melt aligning device is sent to and upper base is combined with each other, specific orientation is formed between upper base and lower base, the thin layer of particular color, UV solidification is carried out again by UV solidification equipment, form liquid crystal anti-counterfeit pigment film, finally enter stripping shredding unit, by film from upper, lower base is stripped out, pulverizing obtains liquid crystal anti-counterfeit pigment particle.Structure of the present invention is simple, easy to operate, can control upper doses by regulating material loading control roller; By the thickness and the degree of orientation that regulate orientation roller setter can control formed false proof liquid crystal mixolimnion; And solidifying controlling box can the intensity of control UV illumination separately.
Description
Technical field
The present invention relates to a kind of production equipment special of liquid crystal anti-counterfeit pigment, belong to production method and the equipment association area of liquid crystal anti-counterfeit pigment and liquid crystal anti-counterfeit pigment.
Background technology
At present, optical color variable pigment technology is used in the application of anti-counterfeiting ink and anti-forgery ink more and more, false proof for file and product.These technology have employed optical interference techniques, and the color effects that optical reflection is produced changes along with the change of viewing angle.This kind of pigment comprises inorganic and pigment dyestuff two class, and they differ from one another in performance, and its optical property is used in false proof aspect.This technology due to color with angle change and there is splendid metalluster and metachrosis, therefore, there is stronger anti-copying function, thus ensure that the verity of product.
The function that the existing color of cholesteric liquid crystal pigment changes with angle, has again characteristic that is left-handed specific to unique polarization characteristic and chiral molecules and dextrorotation, has therefore possessed the latent space developed in the uniqueness of anti-counterfeit field.Along with continuous improvement and the development of these technology, in conjunction with printing graphic design change programme, will take the course of its own in anti-counterfeit field.
Mineral dye of the same type adopts inorganic film coating method to produce, and this production method needs more complicated operating procedure, requires higher to the stability of equipment, under also needing vacuum condition simultaneously, so just causes pigment production cost and remains high.
Summary of the invention
Because organic cholesteric liquid crystal pigment substantially covers similar inorganic optical security pigment in performance, also possess polarization characteristic and the specific characteristic that the left-right rotary of light is modulated of chiral molecules that mineral dye do not possess simultaneously, therefore the present invention is based on and herein is provided a kind of liquid crystal anti-counterfeit pigment---the production equipment special of cholesteric liquid crystal pigment, in order to the production cholesteric liquid crystal pigment of rapid, high volume.
A kind of production equipment special of liquid crystal anti-counterfeit pigment, comprise feeding device, hot melt aligning device, UV solidification equipment, peel off shredding unit and control device, control device is for controlling the operation of whole production unit, lower base carries out dip-coating by feeding device in the paste mixture of liquid crystal anti-counterfeit pigment, then hot melt aligning device is sent to and upper base is combined with each other, and under the effect of certain temperature and dipole-dipole force, specific orientation is formed between upper base and lower base, the thin layer of particular color, UV solidification is carried out again by UV solidification equipment, form liquid crystal anti-counterfeit pigment film, finally enter stripping shredding unit, by film from upper, lower base is stripped out, pulverizing obtains liquid crystal anti-counterfeit pigment particle.
Described feeding device comprises base-material roller of going to the bottom, the first delivery roller, elevating hopper, material loading control roller, the second delivery roller, material loading smoothing roller and pressure roll, the paste mixture of the liquid crystal anti-counterfeit pigment prepared is placed in elevating hopper, the lower base of going to the bottom on base-material roller under the drive of winding motor through the first delivery roller, pressure roll, material loading smoothing roller, the paste mixture of a certain amount of liquid crystal anti-counterfeit pigment of dip-coating in elevating hopper, control dip-coating amount by material loading control roller, be then sent to hot melt aligning device by the second delivery roller.
Described hot melt aligning device comprises warming mill, orientation roller, orientation roller setter and upper base base-material roller, and wherein warming mill Heating temperature is room temperature ~ 250 DEG C.Dip-coating has the lower base of the paste mixture of liquid crystal anti-counterfeit pigment together with the upper base compound on upper base base-material roller through warming mill and orientation roller, adopt the combination degree between orientation roller setter adjustment orientation roller and upper and lower base and orientation effect, make the mixture of liquid crystal anti-counterfeit pigment between upper and lower base form the thin layer of specific orientation, particular color.
Described lower base and upper base are the various plastics films through rubbing process, as PET (polyethylene terephthalate), and PVC (polyethylene), PP (polypropylene), PI (polyimide) etc.
Described UV solidification equipment comprises the 3rd delivery rod, travelling belt, solidification case, the 4th delivery roller, the false proof thin layer of the liquid crystal of upper and lower base and intermediate formation thereof by solidification case, accepts a certain amount of UV radiation curing in the moving process in solidification case and forms liquid crystal false-proof film under the drive of the 3rd delivery roller and the 4th delivery roller and travelling belt.
Described stripping shredding unit comprises the 5th delivery roller, 6th delivery roller, 7th delivery roller, first stripper roll, second stripper roll, scraper, pigment bucket, first useless base material receiving roller and the second useless base material receiving roller and winding motor, on, lower base and liquid crystal false-proof film entirety are by the 5th delivery roller, 6th delivery roller, 7th delivery roller, first stripper roll and the second stripper roll, in scraper and the first stripper roll, under the dual function of the second stripper roll, by liquid crystal false-proof film from upper, lower base is peeled off, be crushed in pigment bucket, liquid crystal false-proof film peel off after upper, lower base is respectively by the first useless base material receiving roller and the second useless base material receiving roller rolling.
Described control device comprises UV and solidifies controlling box, distribution control box and return pulley, wherein UV solidify controlling box can the intensity of control UV illumination and radiated time separately.
The invention has the advantages that:
Pass through present device, feeding device is adopted to be coated on treated base different mixed system liquid crystal compounds, suitable temperature can produce distinct colors and different circularly polarized light (left-handed or dextrorotation) after the special processing of hot melt aligning device, then with the UV optical radiation certain hour of certain energy, distinct colors and polarization effect are fixed up with UV solidification equipment, then by peel off shredding unit process be crushed into anti-forgery ink can optical anti-counterfeiting pigment, whole process is manipulated by control device.The pigment using this equipment to prepare print process anti-counterfeiting label decorations there is macroscopic obvious different observation angle optic metachromatic effect, these antifalse effects cannot obtain by copying.
Structure of the present invention is simple, easy to operate, can control upper doses by regulable control material loading control roller; Thickness and the degree of orientation of formed false proof liquid crystal mixolimnion can be controlled by regulable control orientation roller setter; And solidifying controlling box can the intensity of control UV illumination separately.
Below by the drawings and specific embodiments, the present invention will be further described, but and do not mean that limiting the scope of the invention.
Accompanying drawing explanation
Fig. 1 is the main machine structure schematic diagram of present device.
Fig. 2 is the main frame three-dimensional side view of present device.
Fig. 3 is the main frame schematic three-dimensional top view of present device.
Main Reference Numerals illustrates:
To go to the bottom base-material roller 1 first delivery roller 2
UV solidifies controlling box 3 elevating hopper 4
Material loading control roller 5 second delivery roller 6
Material loading smoothing roller 7 pressure roll 8
Warming mill 9 orientation roller 10
Orientation roller setter 11 upper base base-material roller 12
3rd delivery rod 13 travelling belt 14
Solidification case 15 the 4th delivery roller 16
5th delivery roller 17 the 6th delivery roller 18
7th delivery roller 19 distribution control box 20
First stripper roll 21 second stripper roll 22
Scraper 23 pigment bucket 24
The useless base material receiving roller 26 of first useless base material receiving roller 25 second
Winding motor 27 return pulley 28
Embodiment
Please refer to Fig. 1-3, the production equipment special of liquid crystal anti-counterfeit pigment of the present invention, is made up of following components:
A) feeding device;
B) hot melt aligning device;
C) UV solidification equipment;
D) shredding unit is peeled off;
E) control device.
Lower base carries out dip-coating by feeding device in the paste mixture of liquid crystal anti-counterfeit pigment, then hot melt aligning device is sent to and upper base is combined with each other, and under the effect of certain temperature and dipole-dipole force, the thin layer of specific orientation, particular color is formed between upper base and lower base, liquid crystal anti-counterfeit pigment film is formed again by UV solidification equipment, finally enter stripping shredding unit, film is stripped out from upper and lower base, pulverizing obtains liquid crystal anti-counterfeit pigment particle, and control device controls for the operation of whole production unit.
Feeding device comprises base-material roller 1, first delivery roller 2 of going to the bottom, elevating hopper 4, material loading control roller 5, second delivery roller 6, material loading smoothing roller 7 and pressure roll 8, the paste mixture of the liquid crystal anti-counterfeit pigment prepared is placed in elevating hopper 4, the lower base of going to the bottom on base-material roller 1 under the drive of winding motor 27 through the first delivery roller 2, pressure roll 8, material loading smoothing roller 7, the paste mixture of a certain amount of liquid crystal anti-counterfeit pigment of dip-coating in elevating hopper 4, control dip-coating amount by material loading control roller 5, be then sent to hot melt aligning device by the second delivery roller 6.
Hot melt aligning device comprises warming mill 9, orientation roller 10, orientation roller setter 11 and upper base base-material roller 12, and wherein warming mill 9 Heating temperature is room temperature ~ 250 DEG C.Dip-coating has the lower base of the paste mixture of liquid crystal anti-counterfeit pigment together with the upper base compound on upper base base-material roller 12 through warming mill 9 and orientation roller 10, adopt orientation roller setter 11 to regulate combination degree between orientation roller 10 and upper and lower base and orientation effect, make the mixture of liquid crystal anti-counterfeit pigment between upper and lower base form the thin layer of specific orientation, particular color.
UV solidification equipment comprises the 3rd delivery rod 13, travelling belt 14, solidification case 15, the 4th delivery roller 16, the false proof thin layer of the liquid crystal of upper and lower base and intermediate formation thereof by solidification case 15, accepts a certain amount of UV radiation curing in the moving process in solidification case 15 and forms liquid crystal false-proof film under the drive of the 3rd delivery rod 13 and the 4th delivery roller 16 and travelling belt 14.
Lower base and upper base can adopt the various plastics films through rubbing process, as PET (polyethylene terephthalate), and PVC (polyethylene), PP (polypropylene), PI (polyimide) etc.
Peel off shredding unit and comprise the 5th delivery roller 17, 6th delivery roller 18, 7th delivery roller 19, first stripper roll 21, second stripper roll 22, scraper 23, pigment bucket 24, first waste material base rewinding rod 25 and the second useless base material receiving roller 26 and winding motor 27, on, lower base and liquid crystal false-proof film entirety are by the 5th delivery roller 17, 6th delivery roller 18, 7th delivery roller 19, first stripper roll 21 and the second stripper roll 22, in scraper 23 and the first stripper roll 21, under the dual function of the second stripper roll 22, by liquid crystal false-proof film from upper, lower base is peeled off, be crushed in pigment bucket 24, liquid crystal false-proof film peel off after upper, lower base is respectively by the first useless base material receiving roller 25 and the second useless base material receiving roller 26 rolling.
Control device is for controlling the operation of whole production unit, and control device comprises UV and solidifies controlling box 3, distribution control box 20 and return pulley 28, wherein UV solidify controlling box 3 can the intensity of control UV illumination and radiated time separately.
The operation logic effect of the special production system of liquid crystal anti-counterfeit pigment of the present invention is as follows:
The false proof liquid crystal paste mixture prepared is placed on elevating hopper 4, then the operation button in distribution control box 20 is opened, under the special plastics of going to the bottom on base-material roller 1 base under the slow drive of winding motor through the first delivery roller 2, pressure roll 8, a certain amount of false proof liquid crystal paste mixture of material loading smoothing roller 7 dip-coating in elevating hopper 4, dip-coating amount is controlled by material loading control roller 5, then the second delivery roller 6 is passed through together with base compound on the special plastics on upper base base-material roller 12 through warming mill 9 and orientation roller 10, under the effect of the certain temperature of warming mill 9 and under the effect of the dipole-dipole force of orientation roller 10, orientation roller setter 11 effectively can regulate combination degree between orientation roller 10 and plastics base and orientation effect, between upper and lower base, false proof liquid crystal compound forms specific orientation, the thin layer of particular color, then under the drive of the 3rd delivery roller 13 and the 4th delivery roller 16 and travelling belt 14 by solidification case 15, accept a certain amount of UV radiation curing in moving process in solidification case 15 and form liquid crystal false-proof film, then overall by the 5th delivery roller 17, 6th delivery roller 18, 7th delivery roller 19, first stripper roll 21, second stripper roll 22, in scraper 23 and the first stripper roll 21, peeling off from upper and lower base plastics film under the dual function of the second stripper roll 22 is crushed in pigment bucket 24, the plastics film of base up and down after the stripping of liquid crystal false-proof film is by the first useless base material receiving roller 23 and the second useless base material receiving roller 24 rolling.
In the apparatus of the present, upper doses can be controlled by the regulable control of material loading control roller 5, thickness and the degree of orientation of formed false proof liquid crystal mixolimnion can be controlled by the regulable control of orientation roller setter 11, can the intensity of control UV illumination separately by solidification controlling box.
Here is one and adopts production unit of the present invention, the example of preparation liquid crystal anti-counterfeit pigment.
The weight proportion of liquid crystal anti-counterfeit pigment is as follows:
Compound 1:29.49%
Compound 2:43.94%
Compound 3:11.18%
Compound 4:11.23%
Light trigger Iragacure819:4.10%
Hot stopper BHT:0.06%
Compound 1:
Compound 2:
Compound 3:
Compound 4:
Above compound is mixed in proportion in single port flask, adds after whole compound dissolution (compound 1 doublely can make linking agent) mixes by appropriate methylene dichloride, revolve part methylene chloride and obtain paste mixture, as coating fluid.The false proof liquid crystal paste mixture prepared is placed on elevating hopper 4, then the operation button in distribution control box 20 is opened, the base under the PET of rubbing process of going to the bottom on base-material roller 1 under the slow drive of winding motor through the first delivery roller 2, pressure roll 8, a certain amount of false proof liquid crystal paste mixture of material loading smoothing roller 7 dip-coating in elevating hopper 4, coating thickness is approximately 1 ~ 10 μm, dip-coating amount is controlled by material loading control roller 5, then by the second delivery roller 6 with on upper base base-material roller 12 in the PET of rubbing process together with base compound through warming mill 9 and orientation roller 10, under the effect of the certain temperature (being heated to 120 DEG C) of warming mill 9 and under the effect of the dipole-dipole force of orientation roller 10, orientation roller setter 11 effectively can regulate combination degree between orientation roller 10 and plastics base and orientation effect, between upper and lower base, false proof liquid crystal compound forms specific orientation, red thin layer, then under the drive of the 3rd delivery rod 13 and the 4th delivery roller 16 and travelling belt 14 by solidification case 15, UV light (intensity 80W mercury lamp) is accepted according to 20s in moving process in solidification case 15, UV radiation curing forms red fragility liquid crystal false-proof film, then overall by the 5th delivery roller 17, 6th delivery roller 18, 7th delivery roller 19, first stripper roll 21, second stripper roll 22, in scraper 23 and the first stripper roll 21, peeling off from upper and lower base plastics film under the dual function of the second stripper roll 22 is crushed in pigment bucket 24, the plastics film of base up and down after the stripping of liquid crystal false-proof film is by the first useless base material receiving roller 25 and the second useless base material receiving roller 26 rolling.The pigment obtained can be used for printing-ink liquid crystal anti-counterfeit pigment.
Observe under putting polaroid by above-mentioned gained liquid crystal pigment, dextrorotation sheet observation red color visible, redness is cannot see in left-handed observation.
Production unit of the present invention can be used for the production cholesteric liquid crystal pigment of rapid, high volume, use this kind of pigment print process anti-counterfeiting label decorations there is macroscopic obvious different observation angle optic metachromatic effect, these antifalse effects cannot obtain by copying.
Claims (4)
1. the preparation method of a liquid crystal anti-counterfeit pigment, it is characterized in that: the equipment of employing comprises feeding device, hot melt aligning device, UV solidification equipment, peel off shredding unit and control device, control device is for controlling the operation of whole production unit, described feeding device comprises base-material roller of going to the bottom, first delivery roller, elevating hopper, material loading control roller, second delivery roller, material loading smoothing roller and pressure roll, the paste mixture of liquid crystal anti-counterfeit pigment is placed in elevating hopper, the lower base of going to the bottom on base-material roller under the drive of winding motor through the first delivery roller, pressure roll, material loading smoothing roller, dip-coating in elevating hopper, then hot melt aligning device is sent to by the second delivery roller, described hot melt aligning device comprises warming mill, orientation roller, orientation roller setter and upper base base-material roller, dip-coating has the lower base of the paste mixture of liquid crystal anti-counterfeit pigment together with the upper base compound on upper base base-material roller through warming mill and orientation roller, adopt the combination degree between orientation roller setter adjustment orientation roller and upper and lower base and orientation effect, make the mixture of liquid crystal anti-counterfeit pigment between upper and lower base form the thin layer of certain orientation, certain color, described UV solidification equipment comprises travelling belt, solidification case, the 3rd delivery roller and the 4th delivery roller, the false proof thin layer of the liquid crystal of upper and lower base and intermediate formation thereof by solidification case, forms liquid crystal false-proof film under the drive of the 3rd delivery roller and the 4th delivery roller and travelling belt, described stripping shredding unit comprises the 5th delivery roller, 6th delivery roller, 7th delivery roller, first stripper roll, second stripper roll, scraper, pigment bucket, first and second useless base material receiving roller and winding motors, on, lower base and liquid crystal false-proof film are by the 5th delivery roller, 6th delivery roller, 7th delivery roller, first stripper roll and the second stripper roll, in scraper and the first stripper roll, under the dual function of the second stripper roll, by liquid crystal false-proof film from upper, lower base is peeled off, be crushed in pigment bucket, liquid crystal false-proof film peel off after upper, lower base is respectively by the first and second useless base material receiving roller rollings, described control device comprises UV and solidifies controlling box, distribution control box and return pulley, lower base carries out dip-coating by feeding device in the paste mixture of liquid crystal anti-counterfeit pigment, then hot melt aligning device is sent to and upper base is combined with each other, the thin layer of certain orientation, certain color is formed between upper base and lower base, UV solidification is carried out again by UV solidification equipment, form liquid crystal anti-counterfeit pigment film, finally enter stripping shredding unit, film is stripped out from upper and lower base, pulverize and obtain liquid crystal anti-counterfeit pigment particle.
2. the preparation method of liquid crystal anti-counterfeit pigment according to claim 1, is characterized in that: the Heating temperature of described warming mill is room temperature ~ 250 DEG C.
3. the preparation method of liquid crystal anti-counterfeit pigment according to claim 1, is characterized in that: described lower base and upper base are the plastics film through rubbing process.
4. the preparation method of liquid crystal anti-counterfeit pigment according to claim 3, is characterized in that: described plastics film is polyethylene terephthalate, polyethylene, polypropylene or polyimide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310231584.9A CN103351704B (en) | 2013-06-09 | 2013-06-09 | A kind of production equipment special of liquid crystal anti-counterfeit pigment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310231584.9A CN103351704B (en) | 2013-06-09 | 2013-06-09 | A kind of production equipment special of liquid crystal anti-counterfeit pigment |
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| Publication Number | Publication Date |
|---|---|
| CN103351704A CN103351704A (en) | 2013-10-16 |
| CN103351704B true CN103351704B (en) | 2015-10-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310231584.9A Expired - Fee Related CN103351704B (en) | 2013-06-09 | 2013-06-09 | A kind of production equipment special of liquid crystal anti-counterfeit pigment |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1693388A (en) * | 2005-06-09 | 2005-11-09 | 上海印钞厂 | Optical disclour pigment with polarization effect, its preparation process and manufactured printing ink |
| CN1702127A (en) * | 2005-07-01 | 2005-11-30 | 上海印钞厂 | Optical color variable pigment with near-infrared transmission feature and preparation process thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI236496B (en) * | 2000-03-16 | 2005-07-21 | Merck Patent Gmbh | Broadband liquid crystal pigments |
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2013
- 2013-06-09 CN CN201310231584.9A patent/CN103351704B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1693388A (en) * | 2005-06-09 | 2005-11-09 | 上海印钞厂 | Optical disclour pigment with polarization effect, its preparation process and manufactured printing ink |
| CN1702127A (en) * | 2005-07-01 | 2005-11-30 | 上海印钞厂 | Optical color variable pigment with near-infrared transmission feature and preparation process thereof |
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| CN103351704A (en) | 2013-10-16 |
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