CN103865418A - Non-newton-ring chemical treating two-way stretching polyester pre-coating film and preparation method thereof - Google Patents
Non-newton-ring chemical treating two-way stretching polyester pre-coating film and preparation method thereof Download PDFInfo
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- CN103865418A CN103865418A CN201410061247.4A CN201410061247A CN103865418A CN 103865418 A CN103865418 A CN 103865418A CN 201410061247 A CN201410061247 A CN 201410061247A CN 103865418 A CN103865418 A CN 103865418A
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Abstract
The invention provides a non-newton-ring chemical treating two-way stretching polyester pre-coating film. The non-newton-ring chemical treating two-way stretching polyester pre-coating film comprises a two-way stretching polyester film layer; one surface of the two-way stretching polyester film layer is uniformly coated and compounded with an intermediate layer and a hot melt glue layer in sequence, and while the other surface of the two-way stretching polyester film layer is uniformly coated and compounded with a chemical treating coating, wherein the chemical treating coating is prepared from acrylic substances. The non-newton-ring chemical treating two-way stretching polyester pre-coating film has the advantages that no newton ring can be observed with naked eyes; the binding strength with various ink layers is high; and outstanding resistance to damp and heat is also brought.
Description
Technical field
The present invention relates to print film coating technique field, particularly a kind of without rainbow line chemical treatment biaxial stretching polyester (BOPET) pre-coating film, be a kind of pre-coating film that adopts coating, extrusion composite technology technology to manufacture.
Background technology
Pre-coating film is a kind of for the very important flexible packing material of print product, and this product in use has the features such as safety and environmental protection, easy to operate, energy-efficient, excellent performance, and its share of market improves year by year.Pre-coating film is overlayed on to the printed matter surfaces such as paper printing thing, packing material and can play good waterproof, the provide protection such as anti-tear.
In order to increase the exterior decorative effect of printed matter; Packaging and Printing Enterprises sometimes needs to carry out follow-up glazing after pre-coating film overlay film; coating (or spray, print) one deck at printed matter surface can the curing water white transparency coating of UV-light (UV), by playing protection after ultraviolet light polymerization and increasing printed matter gloss.
Even and common light BOPET pre-coating film while dispatching from the factory through surface corona processing, if do not used in time within the regular hour, As time goes on, the moistened surface tension force of corona surface also can be more and more lower, and at this moment the sticking power of itself and UV coating will variation.Therefore need to, at the special Clear coating of glazing face coating one deck, improve the surface polarity of BOPET film, and keep the quite a long time, make the difficult UV ink adhering to originally, caking agent etc. reach desirable adhesion effect.
Being greater than 50 μ at thick BOPET(dinger thickness degree in recent years m) does hard Clear coating and has a lot of research in blooming field in surface.One of them research emphasis is how to eliminate BOPET surface to do the interference rainbow line producing after coating.And (the BOPET thickness that uses is less than 50 μ m) conventionally, does coating also have the phenomenon of interfering rainbow line on BOPET surface in packing film field.
At present, in pre-coating film industry, increasing high-end customer claims to the photosensitiveness gone up of pre-coating film, in order to tackle this market demand, exploitation is without rainbow line chemical treatment coating, change the surface polarity of BOPET film, make the difficult UV ink adhering to originally, it is extremely urgent that caking agent etc. reach desirable adhesion effect.
Summary of the invention
The object of the invention is to overcome the deficiency that prior art exists, provide a kind of without rainbow line chemical treatment biaxial stretching polyester (BOPET) pre-coating film and preparation method thereof.
In order to address the above problem, the invention provides a kind of without rainbow line chemical treatment biaxial tension polyester precoating film, comprise biaxially oriented laminated polyester film, evenly coating, composite interlayer and hot melt adhesive layer successively in described biaxially oriented laminated polyester film one side, evenly apply on another side, composite chemical processes coating; Described chemical treatment coating is acrylic acid or the like material.
Further, described middle layer is polymine, and hot melt adhesive layer is that one, two or more blend in ethylene-vinyl acetate, Low Density Polyethylene, ethylene-propylene acetoacetic ester and ethylene-methyl acrylate forms; Described acrylic acid or the like material is one in water dispersion, polycarbonate modified polyurethane dispersions or the aliphatic polyurethane dispersions of polyurethane dispersions, the modified acrylic ester copolymer of acrylic acid modified polyurethane dispersions, polyester modification, two or more is composite, its solid content is 20%-45%, and hydroxy radical content is 1-4%.
Further, the thickness of described biaxially oriented laminated polyester film is 12～100 μ m, and the thickness of described chemical treatment coating is 0.04～2 μ m, and coated weight is 0.009-0.011g/m
2; The thickness in middle layer is at 0.01-0.03 μ m, and coated weight is 0.009-0.011g/m
2, the thickness of hot melt adhesive layer is 6-200 μ m.
Further, described chemical treatment coating is that chemical treatment varnish is coated in to common biaxially oriented polyester film surface by the mode of roller coat or spraying, then drying formation.
Further, described chemical treatment varnish is water-based type, and composition is acrylic acid or the like material, the alcoholic solvent of 20-80 part, the deionized water of 20-80 part, 0.05-0.1 part wetting agent, 0.05-0.5 part defoamer, 0.05-5 part film coalescence aid of 1-15 part by weight.
Further, described levelling wetting agent be one in ethanol, Virahol, modification or unmodified polysiloxane, two or more.
Further, described defoamer be one in polydimethylsiloxane, ethanol, polypropylene glycerol aether, two or more.
Further, described film coalescence aid be one in N-Methyl pyrrolidone, lauryl alcohol ester, ethylene glycol, diethylene glycol monobutyl ether, two or more.
Further, described alcoholic solvent be one in ethanol, Virahol, propyl carbinol, two or more.
The present invention also provides a kind of preparation method without rainbow line chemical treatment biaxial tension polyester precoating film, comprises the steps:
Step 1: the deionized water of the alcoholic solvent of the acrylic acid or the like material of 1-15 part, 20-80 part, 20-80 part, 0.05-0.1 part wetting agent, 0.05-0.5 part defoamer, 0.05-5 part film coalescence aid are mixed in mixing tank, add in the hopper in coating line;
Step 2: the mode that adopts roller coat coating applies the even no color differnece of one deck, chemical treatment coating without rainbow line at biaxially oriented polyester film surface, obtain chemical treatment biaxial stretching polyester base material, the thickness of dry rear chemical treatment coating is between 0.04～2 μ m.
Step 3: the mode being coated with by roller coat on the non-chemical methods face of described chemical treatment biaxial stretching polyester base material is coated with the polymine middle layer of 0.01-0.03 μ m, after oven drying, adopt and extrude compound mode film ethylene-vinyl acetate hot melt adhesive layer, finally form without rainbow line chemical treatment biaxial tension polyester precoating film.
Beneficial effect of the present invention:
Provided by the invention without rainbow line chemical treatment biaxial tension polyester precoating film, the invisible rainbow line of naked eyes.More than its moistened surface tension force can remain on 56mN/m for a long time, there is good binding strength with various China ink layers.Have in addition excellent wet-hot aging performance, adhesion under hot and humid condition, adapts to long sea voyage.The printed matter that adopts chemical treatment pre-coating film overlay film provided by the invention to prepare has overcome common pre-coating film surface corona and has processed the rear surface wetting tension prolongation in time shortcoming of decay fast, excellent post-press finishing performance is provided, can have carried out easily further processing as UV printing, gold stamping etc.
Brief description of the drawings
Fig. 1 is that one of the present invention is without rainbow line chemical treatment biaxial tension polyester precoating film section structure schematic diagram.
Embodiment
Hereinafter in connection with accompanying drawing, embodiments of the invention are elaborated.It should be noted that, in the situation that not conflicting, the arbitrary combination mutually of the feature in embodiment and embodiment in the application.
The invention provides one as shown in Figure 1 without rainbow line chemical treatment biaxial tension polyester precoating film, comprise biaxially oriented laminated polyester film 1, in biaxially oriented laminated polyester film 1 one side, evenly apply successively, composite interlayer 2 and hot melt adhesive layer 3, on another side, evenly apply, composite chemical processes coating 4; Middle layer 2 is polymine, and hot melt adhesive layer 3 is that one, two or more blend in ethylene-vinyl acetate, Low Density Polyethylene, ethylene-propylene acetoacetic ester and ethylene-methyl acrylate forms; Chemical treatment coating 4 is acrylic acid or the like material.
Acrylic acid or the like material is one in water dispersion, polycarbonate modified polyurethane dispersions or the aliphatic polyurethane dispersions of polyurethane dispersions, the modified acrylic ester copolymer of acrylic acid modified polyurethane dispersions, polyester modification, two or more is composite, its solid content is 20%-45%, and hydroxy radical content is 1-4%.
The thickness of biaxially oriented laminated polyester film is 12～100 μ m, and the thickness of chemical treatment coating is 0.04～2 μ m, and coated weight is 0.009-0.011g/m
2; The thickness in middle layer is at 0.01-0.03 μ m, and coated weight is 0.009-0.011g/m
2, the thickness of hot melt adhesive layer is 6-200 μ m.
Chemical treatment coating is that chemical treatment varnish is coated in to common biaxially oriented polyester film surface by the mode of roller coat or spraying, then drying formation.
Chemical treatment varnish is water-based type, and composition is acrylic acid or the like material, the alcoholic solvent of 20-80 part, the deionized water of 20-80 part, 0.05-0.1 part wetting agent, 0.05-0.5 part defoamer, 0.05-5 part film coalescence aid of 1-15 part by weight.
Levelling wetting agent be one in ethanol, Virahol, modification or unmodified polysiloxane, two or more.
Defoamer be one in polydimethylsiloxane, ethanol, polypropylene glycerol aether, two or more.
Film coalescence aid be one in N-Methyl pyrrolidone, lauryl alcohol ester, ethylene glycol, diethylene glycol monobutyl ether, two or more.
Alcoholic solvent be one in ethanol, Virahol, propyl carbinol, two or more.
This levelling wetting agent can improve the wetting ability of chemical treatment varnish on BOPET surface, improves the bonding force between coating and BOPET, also can make coatingsurface more smooth, fine and close simultaneously.
The defoamer that the present invention selects can be eliminated the small bubbles that form because of high-speed stirring and crosslinking reaction etc., eliminates the impact of bubble on appearance of coat.
Film coalescence aid of the present invention can improve the film forming properties of polyurethane dispersions or acrylic dispersion, helps its film forming, and after film forming, film coalescence aid volatilizees, and can not affect the performance of coating.
Alcoholic solvent of the present invention is the fine solvent of water-borne acrylic resin dispersion, has improved the wettability of its film forming properties and base material simultaneously.
The present invention also provides a kind of preparation method without rainbow line chemical treatment biaxial tension polyester precoating film, comprises the steps:
Step 1: the deionized water of the alcoholic solvent of the acrylic acid or the like material of 1-15 part, 20-80 part, 20-80 part, 0.05-0.1 part wetting agent, 0.05-0.5 part defoamer, 0.05-5 part film coalescence aid are mixed in mixing tank, add in the hopper in coating line;
Step 2: the mode that adopts roller coat coating applies the even no color differnece of one deck, chemical treatment coating without rainbow line at biaxially oriented polyester film surface, obtain chemical treatment biaxial stretching polyester base material, the thickness of dry rear chemical treatment coating is between 0.04～2 μ m.
Step 3: the mode being coated with by roller coat on the non-chemical methods face of described chemical treatment biaxial stretching polyester base material is coated with the polymine middle layer of 0.01-0.03 μ m, after oven drying, adopt and extrude compound mode film ethylene-vinyl acetate hot melt adhesive layer, finally form without rainbow line chemical treatment biaxial tension polyester precoating film.
Embodiment mono-:
Chemical treatment biaxial stretching polyester (BOPET) pre-coating film taking width as 1300mm is example, is elaborated.
First prepare chemical treatment BOPET base material.In high-speed mixer, use low speed mixing even the polyurethane dispersions of 15 parts of polyester modifications, 0.5 part of N-Methyl pyrrolidone, 0.05 part of Virahol, 0.05 part of polydimethylsiloxane and 34.38 parts of deionized waters, and then add 50 parts of ethanolic solns (ratio of ethanol and water is 1:1) in the process stirring, stir, after filtration, the mode being coated with by roller coat is coated in the surface of commercially available light BOPET film (specification is 12 μ m*1340mm*12000m), and coated weight is 0.009g/m
2, after drying, forming chemical treatment BOPET base material, in coating process process, base material both sides need each trimming 10mm, so its specification becomes 12.3 μ m*1320mm*12000m.
Preparation chemical treatment BOPET pre-coating film.This pre-coating film is polymine (PEI) middle layer that the mode that is coated with by roller coat at the non-chemical methods face of above-mentioned chemical treatment BOPET base material is coated with 0.01 μ m, and coated weight is 0.009g/m
2.After oven drying, ethylene-vinyl acetate (EVA) the hot melt adhesive layer formation of compound mode film 8 μ m is extruded in employing.Because need trimming in the process of composite hot melt glue-line, so the specification of final chemical treatment BOPET pre-coating film becomes 20.3 μ m*1300mm*12000m.
Embodiment 2
Chemical treatment biaxial stretching polyester (BOPET) pre-coating film taking width as 1300mm is example, is elaborated.
First prepare chemical treatment BOPET base material.By 3 parts of water-borne acrylic resin dispersions (AC747), 5 parts of ethylene glycol, diethylene glycol monobutyl ether is the film coalescence aid of 1:1 composition in mass ratio, the levelling wetting agent of 0.02 part of ethanol and 0.05 part of unmodified polysiloxane composition, 0.25 part of polypropylene glycerol aether and 46.38 parts of deionized waters use low speed mixing even in high-speed mixer, and then add 20 parts of ethanolic solns (ratio of ethanol and water is 1:1) in the process stirring, stir, after filtration, the mode being coated with by roller coat is coated in the surface of commercially available light BOPET film (specification is 12 μ m*1340mm*12000m), coated weight is 0.01g/m
2.After drying, form chemical treatment base material, in coating process process, base material both sides need each trimming 10mm, so its specification becomes 12.9 μ m*1320mm*12000m.
Preparation chemical treatment BOPET pre-coating film.This pre-coating film is the PEI middle layer that the mode that is coated with by roller coat at the non-chemical methods face of above-mentioned chemical treatment BOPET base material is coated with 0.02 μ m, and coated weight is 0.01g/m
2after oven drying, the hot melt adhesive EVA layer formation of compound mode film 8 μ m is extruded in employing.Because need trimming in the process of composite hot melt glue-line, so the specification of final chemical treatment BOPET pre-coating film becomes 20.9 μ m*1300mm*12000m.
Chemical treatment biaxial stretching polyester (BOPET) pre-coating film taking width as 1300mm is example, is elaborated.
First prepare chemical treatment BOPET base material.By 1 part of water-borne acrylic resin dispersion (the 1:1 preparation in mass ratio of acrylic acid modified polyurethane dispersions and polycarbonate modified polyurethane dispersions), 0.05 part of lauryl alcohol ester is film coalescence aid, 0.1 part of ethanol, Virahol is the formulated levelling wetting agent of 1:2 in mass ratio, 0.5 part of polypropylene glycerol aether and 47.88 parts of deionized waters use low speed mixing even in high-speed mixer, and then add 80 parts of ethanolic solns (ratio of ethanol and water is 1:1) in the process stirring, stir, after filtration, the mode being coated with by roller coat is coated in the surface of commercially available light BOPET film (specification is 15 μ m*1340mm*12000m), coated weight is 0.011g/m
2after drying, form chemical treatment base material, in coating process process, base material both sides need each trimming 10mm, so its specification becomes 15.6 μ m*1320mm*12000m.
Preparation chemical treatment BOPET pre-coating film.This pre-coating film is the PEI middle layer that the mode that is coated with by roller coat at the non-chemical methods face of above-mentioned chemical treatment BOPET base material is coated with 0.03 μ m, and coated weight is 0.011g/m
2after oven drying, the hot melt adhesive EVA layer formation of compound mode film 8 μ m is extruded in employing.Because need trimming in the process of composite hot melt glue-line, so the specification of final chemical treatment BOPET pre-coating film becomes 23.6 μ m*1300mm*12000m.
Embodiment the performance test results is as shown in the table:
The thickness of chemical treatment coating is with respect to the very thin thickness of biaxially oriented laminated polyester film.As can be seen from the above table, the build of rainbow line phenomenon and chemical treatment layer, has direct relation with the solids content of coating fluid.By adjusting the formula of coating fluid, naked eyes are invisible for dried rainbow line phenomenon.
The one that adopts the present invention to prepare has very high moistened surface tension force without rainbow line chemical treatment biaxial stretching polyester (BOPET) pre-coating film, and can preserve for a long time.After damp and hot circulation is aging, still can keep higher moistened surface tension force, can directly carry out UV printing on surface, gold stamping etc. further process.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. one kind without rainbow line chemical treatment biaxial tension polyester precoating film, comprise biaxially oriented laminated polyester film, it is characterized in that: evenly coating, composite interlayer and hot melt adhesive layer successively in described biaxially oriented laminated polyester film one side, evenly apply on another side, composite chemical processes coating; Described chemical treatment coating is acrylic acid or the like material.
2. one as claimed in claim 1, without rainbow line chemical treatment biaxial tension polyester precoating film, is characterized in that:
Described middle layer is polymine, and hot melt adhesive layer is that one, two or more blend in ethylene-vinyl acetate, Low Density Polyethylene, ethylene-propylene acetoacetic ester and ethylene-methyl acrylate forms; Described acrylic acid or the like material is one in water dispersion, polycarbonate modified polyurethane dispersions or the aliphatic polyurethane dispersions of polyurethane dispersions, the modified acrylic ester copolymer of acrylic acid modified polyurethane dispersions, polyester modification, two or more is composite, its solid content is 20%-45%, and hydroxy radical content is 1-4%.
3. one as claimed in claim 2, without rainbow line chemical treatment biaxial tension polyester precoating film, is characterized in that:
The thickness of described biaxially oriented laminated polyester film is 12～100 μ m, and the thickness of described chemical treatment coating is 0.04～2 μ m, and coated weight is 0.009-0.011g/m
2; The thickness in middle layer is at 0.01-0.03 μ m, and coated weight is 0.009-0.011g/m
2, the thickness of hot melt adhesive layer is 6-200 μ m.
4. one as claimed in claim 3, without rainbow line chemical treatment biaxial tension polyester precoating film, is characterized in that:
Described chemical treatment coating is that chemical treatment varnish is coated in to common biaxially oriented polyester film surface by the mode of roller coat or spraying, then drying formation.
5. one as claimed in claim 4, without rainbow line chemical treatment biaxial tension polyester precoating film, is characterized in that:
Described chemical treatment varnish is water-based type, and composition is acrylic acid or the like material, the alcoholic solvent of 20-80 part, the deionized water of 20-80 part, 0.05-0.1 part wetting agent, 0.05-0.5 part defoamer, 0.05-5 part film coalescence aid of 1-15 part by weight.
6. one as claimed in claim 5, without rainbow line chemical treatment biaxial tension polyester precoating film, is characterized in that:
Described levelling wetting agent be one in ethanol, Virahol, modification or unmodified polysiloxane, two or more.
7. one as claimed in claim 6, without rainbow line chemical treatment biaxial tension polyester precoating film, is characterized in that:
Described defoamer be one in polydimethylsiloxane, ethanol, polypropylene glycerol aether, two or more.
8. one as claimed in claim 7, without rainbow line chemical treatment biaxial tension polyester precoating film, is characterized in that:
Described film coalescence aid be one in N-Methyl pyrrolidone, lauryl alcohol ester, ethylene glycol, diethylene glycol monobutyl ether, two or more.
9. one as claimed in claim 8, without rainbow line chemical treatment biaxial tension polyester precoating film, is characterized in that:
Described alcoholic solvent be one in ethanol, Virahol, propyl carbinol, two or more.
10. as claimed in claim 1 without a preparation method for rainbow line chemical treatment biaxial tension polyester precoating film, it is characterized in that comprising the steps:
Step 1: the deionized water of the alcoholic solvent of the acrylic acid or the like material of 1-15 part, 20-80 part, 20-80 part, 0.05-0.1 part wetting agent, 0.05-0.5 part defoamer, 0.05-5 part film coalescence aid are mixed in mixing tank, add in the hopper in coating line;
Step 2: the mode that adopts roller coat coating applies the even no color differnece of one deck, chemical treatment coating without rainbow line at biaxially oriented polyester film surface, obtain chemical treatment biaxial stretching polyester base material, the thickness of dry rear chemical treatment coating is between 0.04～2 μ m.
Step 3: the mode being coated with by roller coat on the non-chemical methods face of described chemical treatment biaxial stretching polyester base material is coated with the polymine middle layer of 0.01-0.03 μ m, after oven drying, adopt and extrude compound mode film ethylene-vinyl acetate hot melt adhesive layer, finally form without rainbow line chemical treatment biaxial tension polyester precoating film.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104403592A (en) * | 2014-11-25 | 2015-03-11 | 漳州市泰安预涂膜有限公司 | Printable pre-coating adhesive film and preparation method thereof |
| CN108587506A (en) * | 2018-05-10 | 2018-09-28 | 重庆新康意安得达尔新材料有限公司 | A kind of biaxial tension pre-coating film and preparation method thereof |
| CN109130349A (en) * | 2018-06-07 | 2019-01-04 | 苏州袭麟光电科技产业有限公司 | A kind of high definition is without scratch resistant PC material protective film of rainbow and preparation method thereof |
| CN115505155A (en) * | 2022-09-27 | 2022-12-23 | 惠州艺都文化用品有限公司 | Plate film and preparation method thereof |
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| CN102732174A (en) * | 2012-06-26 | 2012-10-17 | 北京康得新复合材料股份有限公司 | Pre-coating film and preparation method for the same |
| CN102888161A (en) * | 2012-10-23 | 2013-01-23 | 上海维凯化学品有限公司 | Environment-friendly water-based high-adhesion PET (polyethylene terephthalate) precoat coating composition as well as preparation method and application |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102732174A (en) * | 2012-06-26 | 2012-10-17 | 北京康得新复合材料股份有限公司 | Pre-coating film and preparation method for the same |
| CN102888161A (en) * | 2012-10-23 | 2013-01-23 | 上海维凯化学品有限公司 | Environment-friendly water-based high-adhesion PET (polyethylene terephthalate) precoat coating composition as well as preparation method and application |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104403592A (en) * | 2014-11-25 | 2015-03-11 | 漳州市泰安预涂膜有限公司 | Printable pre-coating adhesive film and preparation method thereof |
| CN108587506A (en) * | 2018-05-10 | 2018-09-28 | 重庆新康意安得达尔新材料有限公司 | A kind of biaxial tension pre-coating film and preparation method thereof |
| CN109130349A (en) * | 2018-06-07 | 2019-01-04 | 苏州袭麟光电科技产业有限公司 | A kind of high definition is without scratch resistant PC material protective film of rainbow and preparation method thereof |
| CN115505155A (en) * | 2022-09-27 | 2022-12-23 | 惠州艺都文化用品有限公司 | Plate film and preparation method thereof |
| CN115505155B (en) * | 2022-09-27 | 2023-03-10 | 惠州艺都文化用品有限公司 | Plate film and preparation method thereof |
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| CN103865418B (en) | 2016-01-27 |
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