CN105482728B - A kind of scratch resistance pre-coating film - Google Patents
A kind of scratch resistance pre-coating film Download PDFInfo
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- CN105482728B CN105482728B CN201510884485.XA CN201510884485A CN105482728B CN 105482728 B CN105482728 B CN 105482728B CN 201510884485 A CN201510884485 A CN 201510884485A CN 105482728 B CN105482728 B CN 105482728B
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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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
-
- 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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/08—Polyurethanes from polyethers
-
- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/016—Additives defined by their aspect ratio
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2433/00—Presence of (meth)acrylic polymer
- C09J2433/003—Presence of (meth)acrylic polymer in the primer coating
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2475/00—Presence of polyurethane
- C09J2475/003—Presence of polyurethane in the primer coating
Abstract
The present invention provides a kind of scratch resistance pre-coating films, including including scratch resistance substrate layer, color layer, hot melt adhesive layer, process layer successively from outside to inside, the scratch resistance substrate layer is utilized in the mode of line coating, and modified aqueous scratch resistance coating liquid is formed in the upper surface of a polymer film layer.The present invention realizes the coating of aqueous scratch resistance coating by online coating method, simplifies the treatment process of thin polymer film functionalization, saves the energy and finished product rate can be improved.
Description
Technical field
The present invention relates to print field, more particularly to one kind can improve with printed matter adhesiving effect, and can apply online
The scratch resistance pre-coating film of cloth.
Background technology
Currently, in pre-coating film industry, the coating method to printed matter includes offline and online two kinds of coating methods.
Wherein, the base material being coated with offline easily causes scratch, pollution durings winding, unreeling repeatedly, cut, carry etc.
Etc. surface defects.Meanwhile the coating of offline coated product is not easy to grasp uniformly, coating is thicker, is unable to reach certain specialities
Performance requirement.
Online coating is completed online, and coating layer thickness is adjustable, and online coating need not be any pre- to base material progress
Processing, will not injure the bulk properties of base material, no degradation effect.It is now simple for process with its, easy to operate and as the most feasible
Industrialization technology.
But when being coated on the printed matter that some need specially treated online, easily there is the phenomenon that aliquation.Such as digital printing
In the ink that product surface uses, often contain silicone oil or wax, the inorganic matter component content of silicone oil and wax is big, and when overlay film is not easy and precoats
Hot melt adhesive in film combines, and the conjugation of printed matter and film is inadequate after overlay film, easily occurs at the rolling line, embossing especially after overlay film
Aliquation phenomenon.
Invention content
It is an object of the present invention to provide a kind of scratch resistance pre-coating film that can improve adhesiving effect.
It is a further object to provide a kind of device, methods that can improve pre-coating film substrate layer scratch resistance effect.
Particularly, the present invention provides a kind of scratch resistance pre-coating films, include scratch resistance substrate layer, colour successively from outside to inside
Layer, hot melt adhesive layer, process layer, the scratch resistance substrate layer is utilized in the mode of line coating, by modified aqueous scratch resistance
Coating liquid is formed in the upper surface of a polymer film layer, and the aqueous coating fluid includes：
The aqueous polyurethane dispersion of 30~60 parts by weight；
40~70 parts by weight matt auxiliary agents；
The whisker of 0.01~10 parts by weight；
0.05~0.20 parts by weight levelling wetting agent；
0.1~0.5 parts by weight antifoaming agent；
3~15 parts by weight crosslinking and curing agents.
Further, the scratch resistance substrate layer be 15~30 microns in thickness biaxially oriented polyester film, two-way
The surface of oriented nylon film or bidirectional stretching polypropylene film by being coated with preparation online, the process layer be thickening material or
One kind of number material.
Further, the aqueous coating fluid further includes the water of the thickener and 0-20 parts by weight of 0~0.15 parts by weight, institute
It is association thickener to state thickener, and non-volatile component is 48~52%, proportion 1.02g/cm3.
Further, the aqueous polyurethane dispersion is polycarbonate polyurethane dispersion, fatty acid type polyurethane
The mixing of one or more of dispersion, polyether polyurethane dispersion.
Further, the matt auxiliary agent is the polyurethane matt resin from delustring, and solid content is 25~35%, viscosity
It is 7~9 for 600~800mPa.s, PH.
Further, the whisker is the mixed of one or more of alkali magnesium sulfate, zinc oxide, calcium carbonate, potassium titanate
It closes, wherein the length of the whisker is 1~30 micron, and draw ratio is 5~100；
The levelling wetting agent is the mixing of one or more of ionic polyacrylate solution.
Further, the crosslinking and curing agent be polyfunctionality aziridine, polycarbodiimide, HDI trimer and
The mixing of one or more of the compound tripolymers of HDI-IPDI.
Further, the hot melt adhesive layer is by ethylene butyl acrylate, ethylene ethyl acrylate, ethylene acrylic, ethylene-
Methyl acrylate copolymer mixture, ethylene-methylmethacrylate copolymer, ethylene-vinyl acetate copolymer or low-density
One or more of polyethylene is mixed to form, and thickness is 5~30 microns.
Further, the color layer is using colored or black and white, full width or local pattern coating and printing, and set on anti-
Scratch substrate layer lower surface.
The present invention provides a kind of preparation method of aforementioned scratch resistance pre-coating film, wherein the preparation method of scratch resistance pre-coating film
Include the following steps：
Step 10, aqueous coating fluid is formed after each component being mixed by predetermined weight part, then squeezes into intermediate batch can；
Step 20, after thin polymer film drawn equipment being carried out longitudinal stretching, with corona equipment to the polymer thin
Film surface carries out sided corona treatment；
Step 30, the aqueous coating fluid in intermediate batch can is pumped into closed doctor blade chamber by intermediate pump, recessed roller is by institute
The aqueous coating fluid in doctor blade chamber is stated by the contact cornerite with thin polymer film, the surface of thin polymer film is transferred to, with shape
At coating layer；
Step 40, the thin polymer film for being covered with aqueous coating fluid is sent into stretcher and carries out cross directional stretch, in lateral drawing
It stretches in preheating section, coating fluid finally forms uniform chemical treatment layer through drying process volatilization moisture content in film surface；
Step 50, traction winding is to get to scratch resistance substrate layer.
The beneficial effects of the invention are as follows：The coating that aqueous scratch resistance coating is realized by online coating method, simplifies
The treatment process of thin polymer film functionalization saves the energy and finished product rate can be improved.The present invention answers crystal whisker materials for the first time
It is handled in coating for polymeric film surface, enhances the wear-resisting anti-scratch ability of surface-treated layer.The present invention utilizes colour
Layer replaces the middle layer of traditional pre-coating film, simplifies product structure, both imparted between pre-coating film substrate layer and hot melt adhesive layer compared with
Good interlayer power, and increase the color diversity of pre-coating film.It is also possible to be selected according to application field different
Process layer, to provide the pre-coating film product of diversity and multiple functions unification.
Description of the drawings
Fig. 1 is the structural schematic diagram of pre-coating film in one embodiment of the invention.
Specific implementation mode
As shown in Figure 1, the scratch resistance pre-coating film of the present invention, to include hot melt adhesive successively from the point of view of the sequence that is contacted with printed matter
Layer 20, color layer 30 and substrate layer 40.
When for some special printing situations, can also between hot melt adhesive layer 20 and printed matter coating process layer 10.
The process layer 10 is one kind of tackifier or digital material, and to improve the adhesiving effect to specific printed matter, thickness can be
0.15 microns.Process layer 10, can be with unrestricted choice when for different application fields.By in 20 side of hot melt adhesive layer
Tackifier are coated with, the cementability between pre-coating film and printed matter can be improved so that the bonding force of pre-coating film is far longer than commonly
Pre-coating film especially has postprocessing working procedures to require some, moistened surface tension is low and print of the more difficult overlay film under high speed
Brush product have the improvement of highly significant.And the pre-coating film of digital material is added, can have very with the high digital printing product of silicone oil, wax content
Good cohesive force can go deep into paper fibre, realize and paper is strong bonded, to adapt to weight silicone oil or wax slop ink print product
Overlay film demand.
Wherein, hot melt adhesive layer 20 can melt at different temperature, and embody different adhesiving effects.The hot melt adhesive
Layer 20 can be by ethylene butyl acrylate (EBA), ethylene ethyl acrylate (EEA), ethylene acrylic (EAA), ethylene-acrylic acid
Methyl terpolymer mixture (EMA), ethylene-methylmethacrylate copolymer (EMMA), ethylene-vinyl acetate copolymer
(EVA) or one or more of low density polyethylene (LDPE) (LDPE) is mixed to form.
Color layer 30 can be made of according to different needs different colours, and specific color can be pure color, can also be
The combination of multicolour, in addition, color can form different patterns.Color layer 30 using colored or black and white, full width or
Local pattern coating and printing, be set to 40 lower surface of substrate layer, color layer 30 for polyester film (PET), nylon film (NY) or
The ink that the interlayer power of scratch resistance substrate layer 40 and hot melt adhesive layer 20 can be improved after polypropylene film (BOPP) selection film forming, to take
The middle layer of generation traditional pre-coating film.
Substrate layer 40 is coated on thin polymer film by aqueous coating fluid and is formed, under which generally may include
State the component of parts by weight：The aqueous polyurethane dispersion of 30~60 parts by weight, 40~70 parts by weight matt auxiliary agents, 0.01~10 weight
The whisker of part is measured, 0.05~0.20 parts by weight levelling wetting agent, 0.1~0.5 parts by weight antifoaming agent, the crosslinking of 3~15 parts by weight is admittedly
Agent.In other embodiments, which can also include the thickener and 0-20 parts by weight of 0~0.15 parts by weight
Water, the thickener can be association thickener, non-volatile component be 48~52%, proportion 1.02g/cm3, thickener
System shear viscosity can be improved, the stability of guarantee system, what is routinely used has ACRYSOLTMTT-935, RM-8w or SC-
The models such as 04.
Substrate layer 40 selects biaxially oriented polyester film (PET), BON biaxially oriented nylon film of the thickness for 15~30 microns
(NY) or one kind in bidirectional stretching polypropylene film (BOPP).
Antifoaming agent is the antifoaming agent without organosilicon and mineral oil, such as BYK-011, BYK-016 or HY-102 model pair
Coating performance does not have harmful effect.
Aqueous polyurethane dispersion in the aqueous coating fluid can be polycarbonate polyurethane dispersion, fatty acid type
The mixing of one or more of dispersions of polyurethanes, polyether polyurethane dispersion.Wherein, the solid content of dispersions of polyurethanes
For 20~40wt%, viscosity is 20~800mPa.s, and PH is 8~10.5, Konig hardness in 120~150s.
Matt auxiliary agent can be the polyurethane matt resin from delustring, and solid content is 25~35%, viscosity 600~
800mPa.s, PH are 7~9.
Whisker can be the mixing of one or more of alkali magnesium sulfate, zinc oxide, calcium carbonate, potassium titanate, wherein brilliant
The length of palpus is 1~30 micron, and draw ratio is 5~100.
The levelling wetting agent can be the mixing of one or more of ionic polyacrylate solution.Such as BYK-381,
The models such as D-LEVEL PW1336 or Sogo 3880, levelling wetting agent only promote levelability and on surface tension without influence.
The crosslinking and curing agent can be that polyfunctionality aziridine, polycarbodiimide, HDI trimer and HDI-IPDI are multiple
Close one or more of mixing of tripolymer.
In one embodiment of the invention, the step of substrate layer 40 is prepared by laminating machine is as follows：
Step 10, aqueous coating fluid is formed after each component being mixed by predetermined weight part, then squeezes into intermediate batch can；
Here component can be selected according to the requirement or property of product to be printed.
Step 20, after thin polymer film drawn equipment being carried out longitudinal stretching, with corona equipment to the polymer thin
Film surface carries out sided corona treatment；
Sided corona treatment can improve the surface tension of thin polymer film, enhance wettability
Step 30, the aqueous coating fluid in intermediate batch can is pumped into closed doctor blade chamber by intermediate pump, recessed roller is by institute
The aqueous coating fluid in doctor blade chamber is stated by the contact cornerite with thin polymer film, the surface of thin polymer film is transferred to, with shape
At coating layer；
Step 40, the thin polymer film for being covered with aqueous coating fluid is sent into stretcher and carries out cross directional stretch, in lateral drawing
It stretches in preheating section, coating fluid finally forms uniform chemical treatment layer through drying process volatilization moisture content in film surface；
Step 50, traction winding is to get to substrate layer.
The laminating machine that the present embodiment uses uses Conventional coverlay film machine.
Illustrate the manufacturing process of the pre-coating film of the present invention with specific embodiment below.
Embodiment one makes black scratch resistance nylon precoating film：
Using the polycarbonate polyurethane dispersion of 30 parts by weight, the alkali magnesium sulfate crystal whisker of 0.01 parts by weight, 70 weights
Measure part from delustring polyurethane resin, the ionic polyacrylate solution of 0.05 parts by weight, 0.1 parts by weight are free of organosilicon
With the antifoaming agent of mineral oil, the aziridine crosslinking and curing agent of 3 parts by weight is not added with thickener, uses the water and ethyl alcohol 1 of 5 parts by weight：
1 mixed solvent adjusts system viscosity, and high-speed stirred is uniformly mixed.
Then aqueous coating fluid is squeezed into intermediate batch can by solution feed pump.
Substrate layer selects 22 microns of nylon film, after nylon film is carried out longitudinal stretching by stretcher, passes through
Corona equipment carries out sided corona treatment to nylon film surface, and corona acc power is chosen to be 0.8KW.Intermediate pump is by intermediate batch can simultaneously
In aqueous coating fluid be pumped into closed doctor blade chamber, recessed roller by the aqueous coating fluid in doctor blade chamber, by with nylon film
Contact cornerite is transferred to the surface of nylon film, and coating layer is formed on the surface of nylon film.It is covered with the nylon of aqueous coating fluid
Film subsequently enters stretcher and carries out cross directional stretch, and in cross directional stretch preheating section, aqueous coating fluid is volatilized through drying process
Moisture content finally forms uniform chemical treatment layer 10 on nylon film surface.Then traction winding, it is 23 microns to obtain thickness,
The scratch resistance substrate layer 40 of breadth 4.2m, length 18000m.
Sided corona treatment is carried out to 40 outer surface of scratch resistance substrate layer, corona acc power is chosen to be 1.2KW, reaching after corona
Because being worth 48 or more.Black ink is coated on 40 inner surface of scratch resistance substrate layer by gravure coater, by oven drying,
Drying temperature may be provided in 60 DEG C to get to black layer (color layer 30).
Above-mentioned base material is sent to recombination site by deflector roll, extruder is cast to form hot melt adhesive layer 20, and casting films use MI
For 12, fusing point, 85 degrees Celsius ethene-vinyl acetate (EVA) copolymer hot melt adhesive.The compound of composite production line is squeezed out neighbouring
At position be equipped with ozone generator, by ozone generator generate ozone be blown in hot melt adhesive casting films, ozone it is a concentration of
35%, power 750W, gas flow 3.5SCXFM make the cast surface of resin generate some polar groups, then base material with
Hot melt adhesive casting films are combined by squeezing out the extruding of the nip roller of composite production line recombination site, form composite membrane.Using
It stretches, is cooling, hot melt adhesive layer 20 after deburring thickness is 13 microns.
The pressure of nip roller is 35psi, the desired temperature of extruder is respectively 130,160,190,200,220,220,
220,220,220,220,220,220,220,220,220,220,220,220 degrees Celsius.10 position of process layer can be omitted
After obtained product is cured for 24 hours at 45 DEG C, with printed matter overlay film at 95 DEG C, its correlated performance is tested, as a result
Such as following table：
| Test event | 45 ° of gloss | Resistance to marring/N | Peeling force/N | Surface tension/dyne | Color |
| Test result | 3.5 | 1.0 | 2.73 | 40 | Black |
The product of the present embodiment has good adhesion strength, and with higher surface under very low gloss
Power can adapt to gold stamping, the UV processing of printed matter post-processing.
Embodiment two, red scratch resistance polypropylene viscosify pre-coating film：
Wherein coating fluid includes：The polyether polyurethane dispersion of 60 parts by weight, the potassium titanate crystal whisker of 5 parts by weight, 55 weights
Part is measured from delustring polyurethane resin, 0.15 parts by weight ionic polyacrylate solution, 0.3 parts by weight are without organosilicon and mineral
The antifoaming agent of oil；The 15 compound trimer curing agents of parts by weight HDI-IPDI, 0.15 parts by weight association type polyurethane thickener, are not added with
Water.
Then aqueous coating fluid is squeezed into intermediate batch can by solution feed pump.
Substrate layer selects 15 microns of polypropylene film, after polypropylene film drawn equipment carries out longitudinal stretching, needs
Corona equipment is wanted to carry out sided corona treatment to the surface of polypropylene film, corona machine intensity is chosen to be 0.8KW.Simultaneously intermediate pump will in
Between aqueous coating fluid in batch can be pumped into closed doctor blade chamber, recessed roller by intracavitary aqueous coating fluid by with polypropylene film
Cornerite is contacted, the surface of polypropylene film is transferred to, coating layer is formed on polypropylene film surface.It is covered with the poly- of aqueous coating fluid
Polypropylene film subsequently enters stretcher and carries out cross directional stretch, and in cross directional stretch preheating section, aqueous coating fluid is through drying process
Volatilize moisture content, finally forms uniform chemical treatment layer 10 on polypropylene film surface.Then traction winding, obtaining thickness is
15.5 microns, breadth 8.7m, length 12000m of scratch resistance substrate layer 40.
By 40 outer surface of scratch resistance substrate layer through sided corona treatment, corona machine intensity is chosen to be 4.5KVA, reaching after corona
Because being worth 36 or more.Red water paint is coated on 40 outer surface of substrate layer by gravure coater, by oven drying,
Drying temperature may be provided in 90 DEG C to get to red color layer (color layer 30).
Deflector roll by squeezing out equipment complex send the polypropylene base with red color layer to compound position, and extruder squeezes out
Ethylene-methyl acrylate copolymer mixture (EMA) forms hot melt adhesive layer 20, after chill roll cools down, hot melt adhesive layer 20
Thickness is 5 microns.
Period, the pressure of nip roller are 35psi, the desired temperature of extruder is respectively 130,160,190,200,220,
220、220、220、220、220、220、220、220、220、220、220、220、220℃。
The polypropylene film sent from chill roll enters the second applicator roll, is coated with thickening material using the second applicator roll
On 20 surface of hot melt adhesive layer of polypropylene film, it is made to be combined with polypropylene film, then dries, winds, formed after deburring
Process layer 10, thickness are 0.15 μm.
Respectively by the product with process layer 10 and without process layer 10 at 95 DEG C with printed matter overlay film, test result is such as
Following table：
| Test event | 45 ° of gloss | Surface tension/dyne | Resistance to marring/N | Peeling force/N | Color |
| The product of tape handling layer | 5.8 | 40 | 1.2 | 1.96 | It is red |
| Without the product of process layer | 5.7 | 40 | 1.2 | 1.17 | It is red |
The peeling force that can be seen that thickening pre-coating film from the peel test force result in table improves 67%, is far longer than
Common pre-coating film, be suitably applied postprocessing working procedures require, moistened surface tension it is low and under high speed more difficult overlay film
Printing, while there is good scratch resistance capability and higher surface tension in very low glossiness.
Embodiment three, blue scratch resistance polyester digital pre-laminating film：
Using the fatty acid type dispersions of polyurethanes of 45 parts by weight, the calcium carbonate crystal whisker of 10 parts by weight, 40 parts by weight disappear certainly
Light polyurethane resin, 0.20 parts by weight ionic polyacrylate solution, 0.5 parts by weight are free of the defoaming of organosilicon and mineral oil
Agent, 8 parts by weight polycarbodiimide curing agent, 0.08 parts by weight association type polyurethane thickener, the water of 10 parts by weight.
Then aqueous scratch resistance coating fluid is squeezed into intermediate batch can by solution feed pump.
After polyester film drawn equipment is carried out longitudinal stretching, corona is carried out to polyester film surface by corona equipment
Processing, corona machine intensity are chosen to be 0.8KW.The aqueous coating fluid in intermediate batch can is pumped into closed doctor blade chamber by intermediate pump simultaneously
Interior, intracavitary aqueous coating fluid by the contact cornerite with polyester film, is transferred to the surface of polyester film, in polyester by recessed roller
The surface of film forms coating layer.The polyester film for being covered with coating fluid subsequently enters stretcher progress cross directional stretch, in lateral drawing
It stretches in preheating section, aqueous coating fluid finally forms uniform chemical treatment through drying process volatilization moisture content in polyester film surface
Layer 10.Then traction winding is to get the scratch resistance substrate layer 40 for being 30 microns, breadth 4.2m, length 12000m to thickness.
Deflector roll by squeezing out equipment complex will carry the base material of cyan coloring layer (color layer preparation method is same as Example 2)
Layer 40 is sent to compound position, and extruder squeezes out low density polyethylene (LDPE) (LDPE) and forms hot melt adhesive layer 20, after chill roll cools down,
The thickness of hot melt adhesive layer 20 is 30 microns.
Period, the pressure of nip roller are 35psi, the desired temperature of extruder is respectively 130,160,190,220,250,
270、270、270、270、270、270、270、270、270、270、270、270、270℃。
The polyester film sent from chill roll enters the second applicator roll, is coated on number material using the second applicator roll
On 20 surface of hot melt adhesive layer of polyester film, it is made to be combined with polyester film, then dries, winds, forms process layer after deburring
10, thickness is 0.15 μm.
It will be covered respectively with Konica C8000 number paper at 100 DEG C with process layer 10 and without the product of process layer 10
Film, test result is as follows table：
| Test event | 45 ° of gloss | Surface tension/dyne | Resistance to marring/N | Peeling force/N | Color |
| The product of tape handling layer | 8.2 | 40 | 1.5 | 9.10 | Blue |
| Without the product of process layer | 8.2 | 40 | 1.5 | 2.84 | Blue |
The product adhesion strength that can be seen that the embodiment from the test result of upper table is excellent, and surface tension can expire
Foot is gold stamping and UV is post-processed, and with after process layer 10, is significantly promoted to the cementability of Konica C8000 number paper.
So far, although those skilled in the art will appreciate that present invention has been shown and described in detail herein multiple shows
Example property embodiment still without departing from the spirit and scope of the present invention, still can according to the present disclosure directly
Determine or derive many other variations or modifications consistent with the principles of the invention.Therefore, the scope of the present invention is understood that and recognizes
It is set to and covers other all these variations or modifications.
Claims (9)
1. a kind of scratch resistance pre-coating film includes scratch resistance substrate layer, color layer, hot melt adhesive layer, process layer, institute successively from outside to inside
One kind that process layer is thickening material or digital material is stated, the scratch resistance substrate layer is utilized in the mode of line coating, will be modified
Aqueous scratch resistance coating liquid formed in the upper surface of a polymer film layer, the scratch resistance substrate layer is in thickness
Degree is logical for the surface of 15~30 microns of biaxially oriented polyester film, BON biaxially oriented nylon film or bidirectional stretching polypropylene film
Cross prepared by online coating, the aqueous coating fluid includes：
The aqueous polyurethane dispersion of 30~60 parts by weight；
40~70 parts by weight matt auxiliary agents；
The whisker of 0.01~10 parts by weight；
0.05~0.20 parts by weight levelling wetting agent；
0.1~0.5 parts by weight antifoaming agent；
3~15 parts by weight crosslinking and curing agents.
2. scratch resistance pre-coating film according to claim 1, wherein
The aqueous coating fluid further includes the water of the thickener and 0-20 parts by weight of 0~0.15 parts by weight, and the thickener is to form
Thickener, non-volatile component are 48~52%, proportion 1.02g/cm3。
3. scratch resistance pre-coating film according to claim 1 or 2, wherein
The aqueous polyurethane dispersion is polycarbonate polyurethane dispersion, fatty acid type dispersions of polyurethanes, polyether-type
The mixing of one or more of dispersions of polyurethanes.
4. scratch resistance pre-coating film according to claim 1 or 2, wherein
The matt auxiliary agent is from the polyurethane matt resin of delustring, and solid content is 25~35%, viscosity is 600~
800mPa.s, PH are 7~9.
5. scratch resistance pre-coating film according to claim 1, wherein
The whisker is the mixing of one or more of alkali magnesium sulfate, zinc oxide, calcium carbonate, potassium titanate, wherein the crystalline substance
The length of palpus is 1~30 micron, and draw ratio is 5~100；
The levelling wetting agent is the mixing of one or more of ionic polyacrylate solution.
6. scratch resistance pre-coating film according to claim 1, wherein
The crosslinking and curing agent is polyfunctionality aziridine, polycarbodiimide, HDI trimer and the compound trimerizations of HDI-IPDI
The mixing of one or more of body.
7. scratch resistance pre-coating film according to claim 1, wherein
The hot melt adhesive layer is total by ethylene butyl acrylate, ethylene ethyl acrylate, ethylene acrylic, ethylene-methyl acrylate
One in copolymer mixture, ethylene-methylmethacrylate copolymer, ethylene-vinyl acetate copolymer or low density polyethylene (LDPE)
Kind or it is several be mixed to form, thickness be 5~30 microns.
8. scratch resistance pre-coating film according to claim 1, wherein
The color layer is using colored or black and white, full width or local pattern coating and printing, and under scratch resistance substrate layer
Surface.
9. the preparation method of the scratch resistance pre-coating film according to any one of claim 1-8, wherein scratch resistance substrate layer
Preparation method includes the following steps：
Step 10, aqueous coating fluid is formed after each component being mixed by predetermined weight part, then squeezes into intermediate batch can；
Step 20, after thin polymer film drawn equipment being carried out longitudinal stretching, with corona equipment to the thin polymer film table
Face carries out sided corona treatment；
Step 30, the aqueous coating fluid in intermediate batch can is pumped into closed doctor blade chamber by intermediate pump, recessed roller is scraped described
The aqueous coating fluid of knife intracavitary is transferred to the surface of thin polymer film by the contact cornerite with thin polymer film, is applied with being formed
Layer of cloth；
Step 40, the thin polymer film for being covered with aqueous coating fluid is sent into stretcher and carries out cross directional stretch, it is pre- in cross directional stretch
In hot arc, coating fluid finally forms uniform chemical treatment layer through drying process volatilization moisture content in film surface；
Step 50, traction winding is to get to scratch resistance substrate layer.
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| CN111253878B (en) * | 2017-01-12 | 2021-07-20 | 常州百佳年代薄膜科技股份有限公司 | Preparation method of modified BOPET film and preparation method of adhesive film |
| CN107128096B (en) * | 2017-04-13 | 2023-04-28 | 张家港保税区康得菲尔实业有限公司 | Matte scratch-resistant functional precoating film and preparation method thereof |
| CN108330732A (en) * | 2018-01-31 | 2018-07-27 | 上海宏盾防伪材料有限公司 | One kind having the function of the mute adjustable aqueous polyurethane coating of degree of scratch resistant |
| CN108503876A (en) * | 2018-05-10 | 2018-09-07 | 重庆新康意安得达尔新材料有限公司 | A kind of scratch resistance function pre-coating film and its preparation process |
| CN108624211B (en) * | 2018-05-30 | 2019-08-02 | 广东艺都科技股份有限公司 | A kind of surface treating agent and preparation method thereof of pearly-lustre BOPP film |
| CN109203787B (en) * | 2018-09-30 | 2020-12-25 | 苏州泛普科技股份有限公司 | Intelligent blackboard |
| CN110511687A (en) * | 2019-08-16 | 2019-11-29 | 深圳市三上高分子环保新材料股份有限公司 | The degradable pre-coating film of surface touch and its production line and production method |
| CN111909413A (en) * | 2020-07-22 | 2020-11-10 | 厦门长塑实业有限公司 | Scratch-resistant and high-temperature-resistant extinction BOPA pre-coating film and preparation method thereof |
| CN113105819A (en) * | 2021-04-15 | 2021-07-13 | 广东鑫瑞新材料科技有限公司 | Production method for online coating vacuum aluminum plating transfer film and transfer coating |
| CN116285646A (en) * | 2022-11-30 | 2023-06-23 | 广东邦固化学科技有限公司 | Water-based paint with excellent adhesive force to polypropylene film and preparation method thereof |
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