CN100400172C - Die set for coextrusion coat, and method for coextrusion coating two kinds of coats - Google Patents
Die set for coextrusion coat, and method for coextrusion coating two kinds of coats Download PDFInfo
- Publication number
- CN100400172C CN100400172C CNB2004101034800A CN200410103480A CN100400172C CN 100400172 C CN100400172 C CN 100400172C CN B2004101034800 A CNB2004101034800 A CN B2004101034800A CN 200410103480 A CN200410103480 A CN 200410103480A CN 100400172 C CN100400172 C CN 100400172C
- Authority
- CN
- China
- Prior art keywords
- fluid
- intermediate plate
- coating
- wedge shape
- shape intermediate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The present invention discloses a double-layer co-extrusion coating die set and a method for two different coating liquid formulas of co-extrusion coating by the die set. The present invention makes two coating liquids respectively led in the co-extrusion coating die set. The two coating liquids respectively flow on two isolated planes in the die set, and are merged when the two coating liquids flow out of the die set for forming a double-layer structure. Meanwhile, the two coating liquids are coated on base materials, and then are dried. The present invention also discloses a lamp box sheet with an ink suction layer and a light diffusion layer for using the co-extrusion coating die set.
Description
Technical field
The invention relates to the preparation method of a kind of light diffusion lamp box panel (hereinafter to be referred as lamp box panel), the lamp box panel structure comprises a transparent polyester film, and coating comprises several layers of coating of light diffusion layer and blotting color layer (abbreviation ink absorbing layer) thereon.Lamp box panel is suitable for printing with the ink-jet technology color digital, is used as the advertising signboard of common location employed back side polishings such as station, department store, airport.
Background technology
Analyze from properties of product and structure, the essential structure of general lamp box panel is included in transparent polyester (PETG (polyethylene terephthalate) for example, abbreviation PET) coats three one functional layer on the base material 1, be respectively light diffusion layer 4, ink absorbing layer 3 and bonding coat 2, its structure as shown in Figure 1.Light diffusion layer 4 major functions are divergent light source, make lamp box panel present evenly bright, want simultaneously ink is penetrated rapidly, infiltrate ink absorbing layer, and Main Ingredients and Appearance comprises titanium dioxide and silicon dioxide granule, binder, interfacial agent etc.; Ink absorbing layer 3 major functions are for absorbing ink, and the color that presents pattern is saturated bright-coloured, and fixation, function such as stable must be arranged simultaneously, avoid phenomenons such as ink bleed, dizzy China ink, and Main Ingredients and Appearance comprises polyvinyl alcohol or gelatin (gelatin), interfacial agent etc.; Bonding coat 2 major functions are for increasing adhesion between coating and the base material, avoid functional layer to peel off and reduce product quality, and main component is acrylic acid-styrene copolymerized compound binder.
Because lamp box panel is the layer structure with two-layer above heterogeneity, the preparation method of lamp box panel is still based on the single coating processing procedure at present.Its processing procedure be earlier at base material to fall intaglio printing (reverse gravure) coating last layer bonding coat as thin as a wafer, between 1～5 μ m, utilize the coating of individual layer mould to go up the ink absorbing layer coating fluid, rolling after the oven dry after the oven dry approximately, carry out the coating of light diffusion layer again, the oven dry rolling.If lamp box panel is coated with ink absorbing layer and light diffusion layer coating fluid at twice, the ground floor acceptance rate is 80%, and second layer acceptance rate is 80%, and then whole acceptance rate is 64% or lower.And speed of production is coated with twice because of needs, and consuming time more, the energy of baking oven also loss is more.For lamp box panel, must be coated with ink absorbing layer earlier, and the ink absorbing layer stickiness is higher simultaneously, often contains on the backgear and roller that granule is attached to coating line, when being coated with light diffusion layer again, regular meeting produces defectives such as white or transparent dot.
Prior art is about light diffusion lamp box panel configuration aspects, and for example United States Patent (USP) 5,888, and No. 629 institute discloses, and a kind of inkjet printing consumptive material with sandwich construction is light as herein described and spreads lamp box panel.The coating layer of the lamp box panel that No. 5,888,629, this United States Patent (USP) comprises bonding and connects multiple functional layers such as floor, ink absorbing layer and light diffusion layer, and it adopts the single coating mode, and shortcoming as described above.United States Patent (USP) 5,989, the ink mist recording consumptive material that is disclosed for No. 701 comprises at least a masking liquid and the water miscible ink absorbing layer of one deck that contains particle, and mentioning in the literary composition needs coating more than twice, and its shortcoming is also as described above.United States Patent (USP) 6,183, the inkjet printing consumptive material that contains multi-layer coated rete that is disclosed for No. 844, but contain two or more water imbibition materials at least, one of them is an ink absorbing layer, another layer is a light diffusion layer, does not produce lamp box panel but clearly disclose the available double-coating mode for cloth that carries out simultaneously in its specification literary composition.
Summary of the invention
A main purpose of the present invention is disclosing a kind of set of molds and method of two kinds of coating fluids of coating on a base material simultaneously of being used for.
Another object of the present invention is in the double-layered co-extruded coating die group and the method that propose light diffusion lamp box panel.
Another object of the present invention is proposing to be applicable to that light spreads the ink absorbing layer and the light diffusion layer coating fluid prescription of the double-layered co-extruded coating of lamp box panel.
Disclosed a kind of set of molds that is used to coextrude and coat comprises: patrix, a counterdie and be clamped to a wedge shape intermediate plate between this patrix and the counterdie, wherein the lower surface of this patrix is corresponding to the upper surface of the upper surface of this wedge shape intermediate plate and this counterdie lower surface corresponding to this wedge shape intermediate plate, make and to be located at first groove of lower surface of this patrix and the first flow of a depression except one, and one be located at this counterdie upper surface second groove and one the depression second runner outside, this wedge shape intermediate plate is sealed between this patrix and the counterdie by fluid; Wherein
This patrix further comprises first charging aperture that communicates with this first groove, and this counterdie further comprises second charging aperture that communicates with this second groove; And
This first flow is extended to a sharp edge of this wedge shape intermediate plate by this first groove, this second runner is extended to the sharp edge of this wedge shape intermediate plate by this second groove, so this first flow does not communicate in this set of molds with second runner, and converge and form a slit at the sharp edge of this wedge shape intermediate plate.
Preferable, this patrix and this counterdie are symmetrical mutually across this wedge shape intermediate plate.
Preferable, this first groove and first flow are surrounded by " U " shape face on the lower surface that is positioned at this patrix.
The present invention also provides a kind of method that coextrudes and coat two kinds of coatings, and it is to utilize set of molds of the present invention to realize, this method comprises the following step:
One first fluid, one second fluid are imported this set of molds from this first charging aperture, this second charging aperture respectively, wherein this first fluid enters this first groove and first flow, and it is mobile to the sharp edge of this wedge shape intermediate plate, and this second fluid enters this second groove and second runner, and it is mobile to the sharp edge of this wedge shape intermediate plate, so this first fluid and second fluid converge at the sharp edge of this wedge shape intermediate plate, and flow out this set of molds by this slit; And
One base material is passed through from the below of the slit of this set of molds continuously, and this first fluid and second fluid are coated on the surface of this base material simultaneously, form and to be positioned at lip-deep second fluid coatings of this base material and to be positioned at first fluid coating on this second fluid coatings.
Preferable, this base material is the polymeric substrate of a transparent flexible.
Preferable, this base material comprises a bonding coat, and this second fluid coatings is positioned on this bonding coat.
Preferable, this bonding coat comprises polyacrylic acid or acrylic acid-styrol copolymer, and this bonding coat has the thickness between 0.1～5 μ m.
Preferable, this second fluid comprises water and one or more hydrophilic polymers.Better, this second fluid comprises two kinds of hydrophilic polymers, a kind of be polyvinyl alcohol (polyvinyl alcohol, PVA) and another kind be polyvinylpyrrolidone (polyvinyl pyrrolidone, PVP).Best, this second fluid comprises 3%～6% polyvinyl alcohol and 1～5% polyvinylpyrrolidone, is benchmark with the weight of this second fluid.
Preferable, this first fluid comprises water, one or more hydrophilic polymers, and alcohol, and be selected from the particulate of titanium dioxide or silica.Better, this first fluid comprises two kinds of hydrophilic polymers, and a kind of is that polyvinyl alcohol and another kind are polyacrylic acid; This alcohol is isopropyl alcohol; And particulate is a titanium dioxide.Best, this first fluid comprises 3%～10% titanium dioxide, 3～8% polyvinyl alcohol, 0.01～1% polyacrylic acid (polyacrylic acid, PAA), (isopropyl alcohol IPA), is a benchmark with the weight of this first fluid to 5～15% isopropyl alcohols.
Preferable, the viscosity ratio of this first fluid and second fluid is in 1/3～3/1 scope.Better, the viscosity ratio of this first fluid and second fluid is in 1/1.5～1.5/1 scope.
Preferable, the flow-rate ratio of this first fluid and second fluid is in 1/3～3/1 scope.Better, the flow-rate ratio of this first fluid and second fluid is in 1/1.5～1.5/1 scope.
Preferable, the inventive method further comprises dry this second fluid coatings and first fluid coating.Better, second fluid coatings of this drying has the thickness between 5～15 μ m, and this dry first fluid coating has the thickness between 3～10 μ m.
The present invention is directed to the contingent shortcoming of single coating is improved, cooperate the outside contact co-extrusion pressure of coating fluid prescription utilization mould to carry out the coating of two kinds of coating fluids simultaneously, make two kinds of coating fluids in the outside contact of set of molds, and then produce the coated product that thickness is even, interface quality is good bilayer is filmed, thereby the coating defects when significantly improving single coating and produce yield, increase economic efficiency.
Description of drawings
Fig. 1 is the basic structure generalized section of light diffusion lamp box panel.
Fig. 2 coextrudes and coat the perspective view of set of molds for outside contact of the present invention.
Fig. 3 is the schematic side view of Fig. 2 set of molds.
Fig. 4 is the schematic side view of the last film of set of molds among Fig. 2.
Fig. 5 is the floor map of the lower surface of the last film of set of molds among Fig. 2.
Fig. 6 is the schematic perspective view of the wedge shape intermediate plate of set of molds among Fig. 2.
Reference numeral:
1. be that base material 2. is bonding coat
3. be that ink absorbing layer 4. is light diffusion layer
10,10 '. for upper and lower mould 11. is a charging aperture
12,12 '. be groove 13,13 '. be feed pipe
14,14 '. be mould mould shoulder 15,15 ' up and down. be mould die lip up and down
16,16 ', 16 ". for screw hole 20. is the wedge shape intermediate plate
34. be that wedge shape intermediate plate mould shoulder 35. is wedge shape intermediate plate die lip
40,40 '. be first and second runner 42,42 '. be the coating outlet
A, B are coating fluid
The specific embodiment
According to a preferred embodiment of the present invention, the prescription of making a kind of light diffusion lamp box panel is provided.This lamp box panel structure comprises base material 1, bonding coat 2, ink absorbing layer 3 and light diffusion layer 4 four parts, as shown in Figure 1.Base material 1 can use multiple plastic foil to carry out the surface coating, comprises polyethylene, polypropylene and polyester multiple polymeric membranes such as (for example PET), because this type of plastic basis material has pliability, will help the continuous system journey.Bonding coat 2 is Improvement type polyacrylic acid binder, and structure is acrylic acid-styrol copolymer, and major function is for increasing the adhesion between coating and base material, avoids functional layer to peel off and reduces product quality.Ink absorbing layer 3, formed by hydrophilic macromolecule, for example PVA or PVP or other hydrophilic macromolecule, major function is the fast Absorption ink, color saturation, the color accuracy of print image are all showed well, and phenomenons such as unlikely generation ink bleed, dizzy China ink and be full of cracks take place.Light diffusion layer 4 then comprises solids, as SiO
2Or TiO
2Or other solids, its main function is even disperse light, makes the fluorescent tube of back side polishing can not show shape; And the PVA macromolecule, its function is to absorb, the infiltration ink, makes ink can arrive ink absorbing layer fast, unlikelyly makes image can't present optimum because of ink rests on light diffusion layer; And isopropyl alcohol, purpose is de-bubble and forms azeotropic mixture with water, accelerates subsequent drying and handles, and more utilize its high volatile volatile, but rapid draing can form looser TiO
2Arrange, help China ink down; And a small amount of polyacrylic acid (polyacrylic acid is called for short PAA), purpose is by the PAA molecule at TiO
2Lip-deep absorption produces electrostatic stabilization and space multistory stability, reaches even dispersion TiO
2It not is necessarily to be limited to PAA that purpose in solution, the macromolecule of tool similarity also can be used; And a small amount of interfacial agent, fluorine interfacial agent (Fluorosurfactant) for example, purpose is to reduce surface tension, improves the coating defects of the generation because surface tension is too high.
According to another preferred embodiment of the present invention, disclose a kind ofly with A and B two coating fluids, form set of molds and method that the AB bilayer is filmed simultaneously.Of the present invention one is characterised in that patrix and the counterdie that combination is special, and mediate one intermediate plate that is used to shunt.As shown in Figures 2 and 3, this set of molds comprises a patrix 10, one and counterdie 10 ', a wedge shape intermediate plate 20 of this patrix horizontal symmetrical.
In set of molds of the present invention, this patrix 10 is as Fig. 4 and shown in Figure 5, contain a charging aperture 11 that is positioned at this patrix upper surface, a groove 12 that is positioned at this patrix lower surface, connect this charging aperture 11 and this groove 12 a feed pipe 13, be positioned at the formed patrix mould shoulder 14 in an inclined-plane of this patrix side; Be positioned at a patrix die lip 15 in this mould shoulder 14 and this adjacent sideline of lower surface; Be positioned at this patrix lower surface is extended to a depression of this die lip 15 by this groove 12 first flow 40; And plurality of fixed screw hole 16.This counterdie 10 ' has mutual symmetrical structure with patrix 10, the assembly that it is identical with patrix 10 and partly with identical numeral but add ' and represent.
In set of molds of the present invention, this wedge shape intermediate plate 20 (as shown in Figure 6) comprises the formed die lip 35 of sharp edge and the plurality of fixed screw hole 16 of mould shoulder 34 and wedge shape intermediate plate ".
To shown in Figure 6, with this patrix 10, this wedge shape intermediate plate 20 and this counterdie 10 ' are by this corresponding screw hole 16 of bolt as Fig. 2,16 ', 16 " screw togather regularly, so in this patrix die lip 15 and counterdie die lip 15 ' and two coating fluids outlets 42,42 ' of wedge shape intermediate plate die lip 35 formation.When mold 10 and wedge shape intermediate plate 20 coincided, the A coating fluid in this groove 12 only can flow out this set of molds by this coating fluid outlet 42, and its excess-three limit is all sealed.This means that when the A coating fluid enters the groove 12 of this mold 10 by this feed pipe 13 the A coating fluid can only be flowed to the direction of coating fluid outlet 42 by the first flow 40 of this groove 12 along depression.Because mold 10 presents horizontal symmetrical up and down with bed die 10 ', therefore when this bed die 10 ' and wedge shape intermediate plate 20 be aligned coincide after, same, when the B coating fluid enters the groove 12 ' of this bed die 10 ' by this feed pipe 13 ', the B coating fluid can only be flowed to the direction of coating fluid outlet 42 ' by second runner 40 ' of this groove 12 ' along depression, flow out this set of molds by this coating fluid outlet 42 '.So when A and B two coating fluids flow out to coating fluid outlet 42,42 ' separately, when the outside contact of set of molds, have the double-deck fluid that is coated with rete with forming one, be coated on the selected base material (not being shown among the figure).
In the present invention, this patrix 10, this counterdie 10 ' and this wedge shape intermediate plate 20 respectively have the structure (shown in Fig. 2 and 3) of mould shoulder (die shoulder) (being respectively 14,14 ' and 34) and die lip (die lip) (being respectively 15,15 ', 35) at this set of molds outlet side.The purpose of this die lip and the design of mould shoulder can form stable applying area at applied substrate surface when being to be coated with.
A continous way coating process of the present invention comprises elder generation and is being coated with bonding coat on the PET base material, utilizes double-layered co-extruded coating method of the present invention to be coated with ink absorbing layer and light diffusion layer simultaneously after the oven dry immediately, and rolling after oven for drying can obtain finished product.For fear of funds and device-restrictive, do not carry out.In following embodiment 4 and 5, directly use the PET base material of uncoated bonding coat, carry out the experiment that continous way is coated with ink absorbing layer and light diffusion layer simultaneously.
Light diffusion layer is a kind of TiO of having
2Particle and as the dispersion masking liquid of table one composition, and ink absorbing layer is made up of the hydrophilic macromolecule aqueous solution, comprises PVA and PVP macromolecule, forms as shown in Table 2 in detail.Base material is the PET film, and thickness is 100 μ m.
The detailed compound method of light diffusion layer prescription masking liquid: PAA (ALDRICH company, molecular weight 2000) is slowly put into reverse osmosis (RO) water, stirred 30 minutes with 1000rpm, with TiO
2(DuPont company R960), slowly puts into previous solution, stirred 3 hours with 2000rpm, with IPA (connection worker chemical company, Taiwan), and FSO-100 (DuPont company), slowly put into previous solution, stirred 1 hour with 2000rpm, at last with PVA (molecular weight 120000, Changchun, Taiwan petro-chemical corporation, code name BP2420), slowly put into previous solution, stirred 3 hours with 100rpm, finish the preparation of light diffusion prescription, its relative weight percentage as shown in Table 1.
The detailed compound method of ink absorbing layer prescription masking liquid: with PVP (code name K-90, ISP company, USA) slowly put into RO water, stirred 2 hours with 300rpm, treat that PVP is dissolved in RO water fully after, slowly add PVA (molecular weight 120000 again, Changchun, Taiwan petro-chemical corporation, code name BP2420), stirred 5 hours with 100rpm, finish the preparation of ink absorbing layer prescription, its relative weight percentage as shown in Table 2.
Table one
Table two
The prescription of present embodiment is shown in table three and four, and itself and example 2 are similar, but the TiO of light diffusion layer
2Kind and ink absorbing layer formula rate slightly change.
Table three
Table four
The prescription of present embodiment is shown in table five and six, and itself and example 2 are similar, but the formula rate of light diffusion layer slightly changes.
Table five
Table six
The adhesion test experiments
1. experiment purpose
The experiment of this part is the adhesion between PET film that improves not pre-treatment and functional coat mainly.The improvement method for the pre-binder of coating acrylic acid-styrol copolymer on the offensive on the PET base material as bonding coat (primer), after the oven dry in regular turn again hand coat ink absorbing layer and light diffusion layer, obtain carrying out the adhesion test behind the finished product.
2. experiment material
Testing employed base material is the PET film, and by the manufacturing of Japanese SCHMIDT company, model is AS-100, and thickness is 100 μ m.Acrylic acid-styrol copolymer binder is the manufacturing of Dutch Neoresins company, and model is A1092 and A1120.Ink absorbing layer and light diffusion layer prescription then use embodiment 2 to 4 prepared persons.
3. experimental result
Utilize hand to be coated with the resulting finished product of mode, the bonding coat thickness between 1～3 μ m, the ink absorbing layer thickness between between 5～15 μ m and the light diffusion layer thickness between 3～10 μ m.The adhesion test is then analyzed according to the standard of U.S. ASTM D3359-95a.According to experimental result, we find to have or not the adding bonding coat, and are very big for the adhesion influence of base material and ink absorbing layer and light diffusion layer coating.If the uncoated bonding coat of PET base material promptly is coated with ink absorbing layer and light diffusion layer, its adhesion test result is the poorest, belongs to the grade of 0B.If the PET base material is earlier through being coated with bonding coat, ink absorbing layer and light diffusion layer are gone up in coating again, and its adhesion test result shows that adhesion obviously promotes, between 3B～4B.
The light diffusion lamp box panel that gets via above embodiment 2 prescription making, its light diffusivity and print quality are all very good.The light diffusivity is that fluorescent tube can't show shape via before lamp box panel is placed the fluorescent tube of back side polishing, and presents one bright uniformly; The criterion of printing test quality is after utilizing draught machine (HP designjet 5000) to print the standard drawing shelves, observes its China ink, following black speed, whether swoon black ink bleed and several critical natures of color accuracy down.
Above embodiment 3 prescriptions also can be produced good light diffusion lamp box panel, and the performance of its light diffusivity and printing test is also very good.
The prescription of embodiment 4 belongs to the prescription of failure, and through the lamp box panel of filling a prescription and being made thus, ink can't see through light diffusion layer fully, cause color representation poor, even if adjust the thickness of light diffusion layer, following China ink also can't get a promotion, so this prescription is the prescription of failure.
Embodiment 5. process parameter
Use the set of molds shown in Fig. 2 to 6 to carry out present embodiment, wherein the coating fluid of set of molds 42 (42 ') of outlet have the height of 350 μ m and the width of 10cm.Use the prescription masking liquid of embodiment 2 to have the PET base material of bonding coat to coextrude and coat to uncoated.The parameter that need control when coating comprises the nozzle wind velocity and the baking temperature of masking liquid flow-rate ratio, viscosity ratio, application rate, substrate tension, baking oven, and detail parameters as shown in Table 7.Coating machine is the made experimental machine of Japanese Inokin company.
Table seven
Through continuous process thus make and light diffusion lamp box panel, because can be via calculating in advance, its each coating layer thickness is all within control, and the uniformity of coating and tight ness rating are all very good, criterion is that (scanning electron microscope, SEM) the profile analysis is learnt via sweep electron microscope.
Embodiment 6. process parameter
With example 5 same coated modes, but process parameter is slightly different, and detail parameters as shown in Table 8.
Table eight
Light diffusion lamp box panel through processing procedure thus obtains because its application rate is very fast, causes light diffusion layer thickness too thin, causes lamp box panel light diffusivity deficiency, and fluorescent tube can display, and belongs to the coating process of a failure.Must adjust again at flow and application rate.
The present invention is described in, and person skilled in the art scholar still can make multiple variation and the modification that does not break away from following claim.
Claims (12)
1. method that coextrudes and coat two kinds of coatings, the set of molds that is used for described method, comprise a patrix, a counterdie and be clamped to a wedge shape intermediate plate between this patrix and the counterdie, wherein the lower surface of this patrix is corresponding to the upper surface of the upper surface of this wedge shape intermediate plate and this counterdie lower surface corresponding to this wedge shape intermediate plate, make and to be located at first groove of lower surface of this patrix and the first flow of a depression except one, and one be located at this counterdie upper surface second groove and one the depression second runner outside, this wedge shape intermediate plate is sealed between this patrix and the counterdie by fluid; Wherein
This patrix further comprises first charging aperture that communicates with this first groove, and this counterdie further comprises second charging aperture that communicates with this second groove; And
This first flow is extended to a sharp edge of this wedge shape intermediate plate by this first groove, this second runner is extended to the sharp edge of this wedge shape intermediate plate by this second groove, so this first flow does not communicate in this set of molds with second runner, and converge and form a slit at the sharp edge of this wedge shape intermediate plate;
Wherein: this method comprises the following step:
One first fluid, one second fluid are imported this set of molds from this first charging aperture, this second charging aperture respectively, wherein this first fluid enters this first groove and first flow, and it is mobile to the sharp edge of this wedge shape intermediate plate, and this second fluid enters this second groove and second runner, and it is mobile to the sharp edge of this wedge shape intermediate plate, so this first fluid and second fluid converge at the sharp edge of this wedge shape intermediate plate, and flow out this set of molds by this slit; And
One base material is passed through from the below of the slit of this set of molds continuously, and this first fluid and second fluid are coated on the surface of this base material simultaneously, form and to be positioned at lip-deep second fluid coatings of this base material and to be positioned at first fluid coating on this second fluid coatings;
The viscosity ratio of the described first fluid and second fluid is in 1/3～3/1 scope;
Described second fluid comprises water, polyvinyl alcohol and polyvinyl pyrrolidone; Described first fluid comprises water, polyvinyl alcohol, and polyacrylic acid, alcohol, and be selected from the particulate of titanium dioxide or silica.
2. the method for claim 1, wherein this base material is the polymeric substrate of a transparent flexible.
3. method as claimed in claim 2, wherein this base material comprises a bonding coat, and this second fluid coatings is positioned on this bonding coat.
4. method as claimed in claim 3, wherein this bonding coat comprises polyacrylic acid or acrylic acid-styrol copolymer, and this bonding coat has the thickness between 0.1～5 μ m.
5. the method for claim 1, wherein this second fluid comprises 5%～6% polyvinyl alcohol and 2～3% polyvinylpyrrolidone, is benchmark with the weight of this second fluid.
6. the method for claim 1, wherein said first fluid alcohol is isopropyl alcohol; And particulate is a titanium dioxide.
7. method as claimed in claim 6, wherein this first fluid comprises 4.9%～8.32% titanium dioxide, 4.9～8.32% polyvinyl alcohol, 0.2～1% polyacrylic acid, 8.32～9.8% isopropyl alcohols, is benchmark with the weight of this first fluid.
8. the method for claim 1, wherein the viscosity ratio of this first fluid and second fluid is in 1/1.5～1.5/1 scope.
9. the method for claim 1, wherein the flow-rate ratio of this first fluid and second fluid is in 1/3～3/1 scope.
10. method as claimed in claim 9, wherein the flow-rate ratio of this first fluid and second fluid is in 1/1.5～1.5/1 scope.
11. as each described method of claim 1 to 10, it further comprises dry this second fluid coatings and first fluid coating.
12. method as claimed in claim 11, second fluid coatings that wherein should drying has the thickness between 5～15 μ m, and this dry first fluid coating has the thickness between 3～10 μ m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004101034800A CN100400172C (en) | 2004-12-30 | 2004-12-30 | Die set for coextrusion coat, and method for coextrusion coating two kinds of coats |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004101034800A CN100400172C (en) | 2004-12-30 | 2004-12-30 | Die set for coextrusion coat, and method for coextrusion coating two kinds of coats |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1795996A CN1795996A (en) | 2006-07-05 |
| CN100400172C true CN100400172C (en) | 2008-07-09 |
Family
ID=36817442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004101034800A Expired - Fee Related CN100400172C (en) | 2004-12-30 | 2004-12-30 | Die set for coextrusion coat, and method for coextrusion coating two kinds of coats |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100400172C (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008178818A (en) * | 2007-01-25 | 2008-08-07 | Chugai Ro Co Ltd | Slit die and shim |
| CN102107175B (en) * | 2011-02-25 | 2013-11-13 | 苏州纳格光电科技有限公司 | Manufacturing method of light dispersion plate |
| AU2013243841B2 (en) * | 2012-04-06 | 2016-05-12 | Stowe Woodward Licensco, Llc | A hydrophobic and/or amphiphobic roll cover |
| CN103897529B (en) * | 2012-12-27 | 2016-01-20 | 青岛佳艺影像新材料技术有限公司 | The preparation method of double-deck full-face spray light box film coating fluid |
| CN104269506A (en) * | 2014-10-24 | 2015-01-07 | 深圳市星源材质科技股份有限公司 | Method and device for preparing composite diaphragm of lithium battery in multilayer co-extrusion coating way |
| CN108114863B (en) * | 2016-11-29 | 2020-10-23 | 深圳市比亚迪锂电池有限公司 | Die head device |
| CN113083617B (en) * | 2021-04-07 | 2022-08-05 | 深圳市曼恩斯特科技股份有限公司 | Coating die head and coating machine |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1174524A (en) * | 1995-02-02 | 1998-02-25 | 美国3M公司 | Method and apparatus for coating substrates using air knife |
| US5888629A (en) * | 1995-10-05 | 1999-03-30 | Azon Corporation | Ink jet recording medium |
| CN1079704C (en) * | 1994-04-29 | 2002-02-27 | 美国3M公司 | Multiple layer and slide die coating method and apparatus |
| CN1080143C (en) * | 1994-12-28 | 2002-03-06 | 东丽株式会社 | Coating method and coating apparatus |
-
2004
- 2004-12-30 CN CNB2004101034800A patent/CN100400172C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1079704C (en) * | 1994-04-29 | 2002-02-27 | 美国3M公司 | Multiple layer and slide die coating method and apparatus |
| CN1080143C (en) * | 1994-12-28 | 2002-03-06 | 东丽株式会社 | Coating method and coating apparatus |
| CN1174524A (en) * | 1995-02-02 | 1998-02-25 | 美国3M公司 | Method and apparatus for coating substrates using air knife |
| US5888629A (en) * | 1995-10-05 | 1999-03-30 | Azon Corporation | Ink jet recording medium |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1795996A (en) | 2006-07-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6913722B2 (en) | Method of making an optically transparent inkjet printing medium | |
| CN1084662C (en) | Extrusion coating process for making protective and decorative films | |
| CN104245343B (en) | Multilayer film for multi-purpose inkjet systems | |
| US6386699B1 (en) | Embossed receptor media | |
| CN1162493C (en) | Cling film having microreplicated topography and methods of making and using same | |
| AU660946B2 (en) | Composite coating of variable thickness having a gradient coloration in the cross web direction | |
| CN1224385A (en) | Image receptor medium | |
| CN100400172C (en) | Die set for coextrusion coat, and method for coextrusion coating two kinds of coats | |
| CN1230311C (en) | Image forming method | |
| CN1307523A (en) | Thick sheet lamination process for making exterior automative body panels | |
| CN102333652A (en) | Method for making multi-layer print media by extrusion coating | |
| CN1085563C (en) | Process for the preparation of composite coatings with variable thickness in the cross-web direction | |
| CN106273956A (en) | A kind of embossing release film and processing technology thereof | |
| JP4882739B2 (en) | Method for producing thermal transfer image-receiving sheet | |
| JP4877021B2 (en) | Method for producing thermal transfer image-receiving sheet and coating liquid for forming thermal transfer image-receiving sheet | |
| CN1188815C (en) | Multilayer optically uniform film | |
| JPS63280627A (en) | Highly bright laminated metal plate and its manufacture | |
| CN101484321A (en) | Composite film | |
| TWI284063B (en) | Co-extrusion coating die set and process for co-extrusion coating two coating solutions | |
| CN1323334A (en) | Adhesive sheets and adhesive structures | |
| JP5151538B2 (en) | Thermal transfer image-receiving sheet and method for producing the same | |
| CN107615117A (en) | Optical reflectance coating | |
| CN104943302A (en) | Advertisement consumable without cold laminating film and production method thereof | |
| JP4993127B2 (en) | Thermal transfer image receiving sheet | |
| CN1640656A (en) | Laminate sheet and lamination method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |