CN104830246A - Precoating film and precoating film preparation method - Google Patents
Precoating film and precoating film preparation method Download PDFInfo
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- CN104830246A CN104830246A CN201510282750.7A CN201510282750A CN104830246A CN 104830246 A CN104830246 A CN 104830246A CN 201510282750 A CN201510282750 A CN 201510282750A CN 104830246 A CN104830246 A CN 104830246A
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Abstract
The invention provides a precoating film and a precoating film preparation method. The precoating film comprises a microlensing structural layer, a transparent substrate, an intermediate layer and a hot melt adhesive layer sequentially from top to bottom. By means of light focusing function of the microlensing structural layer additionally arranged on the transparent substrate, the precoating film not only has functions, such as water resistance, moisture resistance, pollution prevention and the like, of common precoating films but also is capable of brightening characters or patterns on printed matters to realize glossiness and brightness, so that customers can be better attracted.
Description
Technical field
The present invention relates to printing film coating technique field, in particular to the preparation method of a kind of pre-coating film and pre-coating film.
Background technology
Pre-coating film, as a kind of flexible packing material for print product, is overlayed on the printed matter surfaces such as paper printing thing, packing material and can play good waterproof, the provide protection such as anti-tear by pre-coating film.Glue-coating is first selected for producer after rewinding according to using the difference of specification breadth by pre-coating film source mill by it on film, then carries out compound with printed matter again.
Overlay film, i.e. pad pasting, coat tamanori by plastics film exactly, makes it to stick together after heating, pressurizeing with paper printed matter, forms the processing technology of paper unification product.Through the printed matter of overlay film, due to the surface plastics film how one deck is thin and transparent, surface more level and smooth light, thus improve glossiness and the fastness of printed matter, picture and text color is more bright-coloured, is rich in stereoscopic sensation, more plays the effects such as waterproof, antifouling, wear-resisting, resistance to folding, resistance to chemical attack simultaneously.In existing technology, the surface due to common pre-coating film is plane or the face without special construction, more limited to the optical quality function ratio improving printed matter.
Summary of the invention
Main purpose of the present invention is the preparation method providing a kind of pre-coating film and pre-coating film, with improve utilize pre-coating film to be formed printed matter on word or the brightness of pattern.
To achieve these goals, according to an aspect of the present invention, provide a kind of pre-coating film, this pre-coating film comprise set gradually from top to bottom microlens structure layer, transparent substrate, middle layer and hot melt adhesive layer.
Further, microlens structure layer comprises multiple microlens, and lenticular radius is R, and lenticular specific refractory power is n, and lenticular focal length is f, and the total thickness of pre-coating film is d, and f=R/ (n-1), 0.4d≤f≤1.6d.
Further, to be separated by between each adjacent microlens in microlens structure layer arrangement; Or arranged end between each adjacent microlens in microlens structure layer; Or partial overlapping arrangement between each adjacent microlens in microlens structure layer.
Further, in microlens structure layer each microlens according to rectangular arranged; Or each microlens arranges according to prismatic in microlens structure layer; Or each microlens No-L aw Order in microlens structure layer.
Further, the thickness of microlens structure layer is 5 ~ 180 μm; Lenticular radius is 10 ~ 200 μm.
Further, the material of microlens structure layer is identical with the material of transparent substrate, is Biaxially oriented polypropylene film (BOPP) or biaxially oriented polyester film.
Further, the thickness of transparent substrate is 12-100 μm.
Further, the material in middle layer is polymine, and the thickness in middle layer is 0.01 ~ 0.03 μm.
Further, the material of hot melt adhesive layer is the EVA resin of EVA content about 14% ~ 20%, and the thickness of hot melt adhesive layer is 10 ~ 40 μm.
According to a further aspect in the invention, provide a kind of preparation method of above-mentioned pre-coating film, this preparation method comprises the following steps: transparent substrate one on the surface hot pressing form microlens structure layer, and apply on the surface at another of transparent substrate and form middle layer; Form hot melt adhesive layer on the intermediate layer by the mode extruded, and microlens structure layer, transparent substrate, middle layer and hot melt adhesive layer form pre-coating film.
Apply technical scheme of the present invention, the present invention is by increasing microlens structure layer over the transparent substrate, and utilize the focussing force of microlens structure layer light, thus make pre-coating film provided by the invention not only have the function such as water-fast, moisture resistance, anti-pollution of common pre-coating film, the function of blast can also be played to the word on printed matter or pattern, gloss is bright-coloured, thus attracts human consumer better.
Accompanying drawing explanation
The Figure of description forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 shows the diagrammatic cross-section of the pre-coating film provided according to embodiment of the present invention;
Fig. 1 a and Fig. 1 b shows the schematic diagram of the blast mechanism of the pre-coating film that embodiment of the present invention provides;
Fig. 2 has shown lenticular arrangement mode in the microlens structure layer that embodiment 1 provides;
Fig. 3 shows the sectional view of the pre-coating film that embodiment 1 provides;
Fig. 4 shows that embodiment 1 provides with brightening effect comparison diagram that is common pre-coating film;
Fig. 5 has shown lenticular arrangement mode in the microlens structure layer that embodiment 2 provides;
Fig. 6 shows the sectional view of the pre-coating film that embodiment 2 provides;
Fig. 7 shows that embodiment 2 provides with brightening effect comparison diagram that is common pre-coating film;
Fig. 8 has shown lenticular arrangement mode in the microlens structure layer that embodiment 3 provides; And
Fig. 9 shows that embodiment 3 provides with brightening effect comparison diagram that is common pre-coating film.
Embodiment
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the application in detail in conjunction with the embodiments.
It should be noted that used term is only to describe embodiment here, and be not intended to the illustrative embodiments of restricted root according to the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative is also intended to comprise plural form, in addition, it is to be further understood that, " comprise " when using term in this manual and/or " comprising " time, it indicates existing characteristics, step, operation, device, assembly and/or their combination.
For convenience of description, here can usage space relative terms, as " ... on ", " in ... top ", " at ... upper surface ", " above " etc., be used for the spatial relation described as a device shown in the figure or feature and other devices or feature.Should be understood that, space relative terms is intended to comprise the different azimuth in use or operation except the described in the drawings orientation of device.Such as, " in other devices or structure below " or " under other devices or structure " will be positioned as after if the device in accompanying drawing is squeezed, being then described as the device of " above other devices or structure " or " on other devices or structure ".Thus, exemplary term " in ... top " can comprise " in ... top " and " in ... below " two kinds of orientation.This device also can other different modes location (90-degree rotation or be in other orientation), and relatively describe space used here and make respective explanations.
From background technology, the word on the existing printed matter utilizing pre-coating film to be formed or the brightness of pattern lower.The present inventor studies for the problems referred to above, proposes a kind of pre-coating film, this pre-coating film comprise set gradually from top to bottom microlens structure layer 1, transparent substrate 2, middle layer 3 and hot melt adhesive layer 4.
The present invention by increasing microlens structure layer 1 on transparent substrate 2, and utilize the focussing force of microlens structure layer 1 light, thus make pre-coating film provided by the invention not only have the function such as water-fast, moisture resistance, anti-pollution of common pre-coating film, the function of blast can also be played to the word on printed matter or pattern, gloss is bright-coloured, thus attracts human consumer better.
Further, the present invention adds last layer microlens structure layer 1 on original pre-coating film basis, microlens structure layer 1 be by sphere lens one by one in order or lack of alignment form, sphere lens has the optically focused effect of convex lens, as shown in Figure 1, the position of focus near the bottom surface of this pre-coating film, near the position being namely in word on printed matter or pattern.
The reflective character of general print product paper layer is diffuse-reflectance, the pre-coating film with microlens structure layer 1 is covered in after in paper layer, the reflection ray of paper layer is through the convergence effect of lens, recto luminous energy converges, make experience stronger brightness perpendicular to paper direction beholder, thus realize brightness enhancement function (as shown in Figure 1 a, 1 b).
Preferably, lenticular radius is R, and lenticular specific refractory power is n, and lenticular focal length is f, and the total thickness of pre-coating film is d, and f=R/ (n-1), 0.4d≤f≤1.6d.Now, due to lenticular optically focused effect, so the light that can reflect the word on printed matter or pattern plays convergence effect, strengthen the function of luminance brightness, also retains the waterproof of common pre-coating film, the function such as anti-tear.| in another embodiment, | f-d|/d≤60%.
In above-mentioned pre-coating film, preferably, to be separated by between each adjacent microlens in microlens structure layer 1 arrangement; Or arranged end between each adjacent microlens in microlens structure layer 1; Or partial overlapping arrangement between each adjacent microlens in microlens structure layer 1.In microlens structure layer 1, each microlens is according to rectangular arranged; Or each microlens arranges according to prismatic in microlens structure layer 1; Or each microlens No-L aw Order in microlens structure layer 1.
Preferably, the thickness of microlens structure layer 1 is 5 ~ 180 μm; Lenticular radius is 10 ~ 200 μm.The material of microlens structure layer 1 is identical with the material of transparent substrate 2, is Biaxially oriented polypropylene film (BOPP) or biaxially oriented polyester film.
Hot melt adhesive layer 4 for printed matter surface hot pressing compound, play the effect of protection, printed matter attractive in appearance.The material and thickness etc. of transparent substrate 2, middle layer 3 and hot melt adhesive layer 4 can set according to prior art.In a preferred embodiment, the thickness of transparent substrate 2 is 12-100 μm.Middle layer 3 is mainly used in protection against the tide, and namely middle layer 3 is moisture-proof barrier.The material in middle layer 3 can be polymine, and the thickness in middle layer 3 is 0.01 ~ 0.03 μm.The material of hot melt adhesive layer 4 is the EVA resin of EVA content about 14% ~ 20%, and the thickness of hot melt adhesive layer 4 is 10 ~ 40 μm.
According to a further aspect in the invention, provide a kind of preparation method of above-mentioned pre-coating film, this preparation method comprises the following steps: transparent substrate 2 one on the surface hot pressing form microlens structure layer 1, and apply on the surface at another of transparent substrate 2 and form middle layer 3; On middle layer 3, form hot melt adhesive layer 4 by the mode extruded, and microlens structure layer 1, transparent substrate 2, middle layer 3 and hot melt adhesive layer 4 form pre-coating film.
Pre-coating film provided by the invention is further illustrated below in conjunction with embodiment.
Embodiment 1
The pre-coating film that the present embodiment provides has four-layer structure, is followed successively by microlens structure layer from top to bottom, transparent substrate, middle layer and hot melt adhesive layer.Wherein, the material of microlens structure layer and transparent substrate is Biaxially oriented polypropylene film (BOPP); The lens of microlens structure layer are spherical lens, and thickness is 36 μm; The thickness of transparent substrate is 36 μm; The material in middle layer is polymine, and thickness is 0.02 μm; The material of hot melt adhesive layer is ethylene-vinyl acetate (EVA), and thickness is 20 μm.
Fig. 2 has shown lenticular arrangement mode in microlens structure layer.As can be seen from Figure 2, rectangular shape arrangement pressed by each microlens, lens and lens be spaced apart 100 μm.Fig. 3 shows the sectional view of the pre-coating film that the present embodiment provides.As can be seen from Figure 3, in sectional view, lenticular radius is 46 μm, and rise is 36 μm.
Figure 4 shows that the pre-coating film (the blast pre-coating film in Fig. 4) that the present embodiment provides and the brightening effect of common pre-coating film compare, wherein light source is incandescent light, and light source is in directly over this film, and vertical irradiation is on film; The word of printed matter or pattern are at the lowest layer of this film, printed matter has diffusing characteristic diffuser for incident beam, 100mm place placement one brightness receptor on pre-coating film under light source, aligning printed matter is fixed within the scope of some left and right 200mm and is received brightness data by brightness receptor, receives the luminance brightness of word or pattern reflected light.As can be seen from Figure 4, the pre-coating film that the present embodiment provides serves the effect of blast.
Embodiment 2
The pre-coating film that the present embodiment provides has four-layer structure, is followed successively by microlens structure layer from top to bottom, transparent substrate, middle layer and hot melt adhesive layer.Wherein, the material of microlens structure layer and transparent substrate is biaxially oriented polyester film; The lens of microlens structure layer are spherical lens, and thickness is 22 μm; The thickness of transparent substrate is 30 μm; The material in middle layer is polymine, and thickness is 0.02 μm; The material of hot melt adhesive layer is ethylene-vinyl acetate (EVA), and thickness is 12 μm.
Figure 5 shows that lenticular arrangement mode in microlens structure layer, as can be seen from Figure 5, prismatic shape close-packed arrays pressed by each microlens, and the minimum interval of lens and lens is 50 μm.The sectional view of the pre-coating film that Fig. 6 provides for the present embodiment.As can be seen from Figure 6, in sectional view, lenticular radius is 32 μm, and rise is 22 μm.Figure 7 shows that the pre-coating film (the blast pre-coating film in Fig. 7) that the present embodiment provides and the brightening effect of common pre-coating film compare, wherein light source is incandescent light, and light source is in directly over this film, and vertical irradiation is on film; The word of printed matter or pattern are at the lowest layer of this film, printed matter has diffusing characteristic diffuser for incident beam, 100mm place placement one brightness receptor on pre-coating film under light source, aligning printed matter is fixed within the scope of some left and right 200mm and is received brightness data by brightness receptor, receives the luminance brightness of word or pattern reflected light.As can be seen from Figure 7, the pre-coating film that the present embodiment provides serves the effect of blast.
Embodiment 3
The pre-coating film that the present embodiment provides has four-layer structure, is followed successively by microlens structure layer from top to bottom, transparent substrate, middle layer and hot melt adhesive layer.Wherein, the material of microlens structure layer and transparent substrate is biaxially oriented polyester film; The lens of microlens structure layer are spherical lens, and thickness is 100 μm; The thickness of transparent substrate is 80 μm; The material in middle layer is polymine, and thickness is 0.02 μm; The material of hot melt adhesive layer is ethylene-vinyl acetate (EVA), and thickness is 20 μm.
Fig. 8 has shown lenticular arrangement mode in microlens structure layer.As can be seen from Figure 8, microlens random alignment in microlens structure layer 1, the radius of lens is 150 μm.Figure 9 shows that the pre-coating film (the blast pre-coating film in Fig. 9) that the present embodiment provides and the brightening effect of common pre-coating film compare, wherein light source is incandescent light, and light source is in directly over this film, and vertical irradiation is on film; The word of printed matter or pattern are at the lowest layer of this film, printed matter has diffusing characteristic diffuser for incident beam, 100mm place placement one brightness receptor on pre-coating film under light source, aligning printed matter is fixed within the scope of some left and right 200mm and is received brightness data by brightness receptor, receives the luminance brightness of word or pattern reflected light.As can be seen from Figure 9, the pre-coating film that the present embodiment provides serves the effect of blast.
As can be seen from the above embodiments, the above-mentioned example of the present invention achieves following technique effect: the present invention is by increasing microlens structure layer over the transparent substrate, and utilize the focussing force of microlens structure layer light, thus make pre-coating film provided by the invention not only have the function such as water-fast, moisture resistance, anti-pollution of common pre-coating film, the function of blast can also be played to the word on printed matter or pattern, gloss is bright-coloured, thus attracts human consumer better.
These are 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 done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a pre-coating film, is characterized in that, described pre-coating film comprise set gradually from top to bottom microlens structure layer (1), transparent substrate (2), middle layer (3) and hot melt adhesive layer (4).
2. pre-coating film according to claim 1, it is characterized in that, described microlens structure layer (1) comprises multiple microlens, described lenticular radius is R, described lenticular specific refractory power is n, and described lenticular focal length is f, and the total thickness of described pre-coating film is d, and f=R/ (n-1), 0.4d≤f≤1.6d.
3. pre-coating film according to claim 2, is characterized in that,
To be separated by between each adjacent described microlens in described microlens structure layer (1) arrangement; Or
Arranged end between each adjacent described microlens in described microlens structure layer (1); Or
Partial overlapping arrangement between each adjacent described microlens in described microlens structure layer (1).
4. pre-coating film according to claim 2, is characterized in that,
In described microlens structure layer (1), each described microlens is according to rectangular arranged; Or
In described microlens structure layer (1), each described microlens arranges according to prismatic; Or
Each described microlens No-L aw Order in described microlens structure layer (1).
5. pre-coating film according to claim 2, is characterized in that, the thickness of described microlens structure layer (1) is 5 ~ 180 μm; Described lenticular radius is 10 ~ 200 μm.
6. pre-coating film according to claim 1, is characterized in that, the material of described microlens structure layer (1) is identical with the material of described transparent substrate (2), is Biaxially oriented polypropylene film (BOPP) or biaxially oriented polyester film.
7. pre-coating film according to claim 1, is characterized in that, the thickness of described transparent substrate (2) is 12-100 μm.
8. pre-coating film according to claim 1, is characterized in that, the material of described middle layer (3) is polymine, and the thickness of described middle layer (3) is 0.01 ~ 0.03 μm.
9. pre-coating film according to claim 1, is characterized in that, the material of described hot melt adhesive layer (4) is the EVA resin of EVA content about 14% ~ 20%, and the thickness of described hot melt adhesive layer (4) is 10 ~ 40 μm.
10. a preparation method for the pre-coating film according to any one of claim 1 to 9, is characterized in that, described preparation method comprises the following steps:
Transparent substrate (2) one on the surface hot pressing form microlens structure layer (1), and apply on the surface at another of described transparent substrate (2) and form middle layer (3);
On described middle layer (3), form hot melt adhesive layer (4) by the mode extruded, and described microlens structure layer (1), described transparent substrate (2), described middle layer (3) and described hot melt adhesive layer (4) form described pre-coating film.
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| CN201510282750.7A CN104830246B (en) | 2015-05-28 | 2015-05-28 | The preparation method of pre-coating film and pre-coating film |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101792645A (en) * | 2010-01-13 | 2010-08-04 | 友达光电股份有限公司 | Micro-structure adhesive tape |
| JP5420786B1 (en) * | 2013-07-23 | 2014-02-19 | 株式会社オプトメイト | Microlens film with adhesive layer |
| CN204244640U (en) * | 2014-09-01 | 2015-04-01 | 苏州斯迪克新材料科技股份有限公司 | Multifunctional protective retaining tape |
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2015
- 2015-05-28 CN CN201510282750.7A patent/CN104830246B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101792645A (en) * | 2010-01-13 | 2010-08-04 | 友达光电股份有限公司 | Micro-structure adhesive tape |
| JP5420786B1 (en) * | 2013-07-23 | 2014-02-19 | 株式会社オプトメイト | Microlens film with adhesive layer |
| CN204244640U (en) * | 2014-09-01 | 2015-04-01 | 苏州斯迪克新材料科技股份有限公司 | Multifunctional protective retaining tape |
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| CN104830246B (en) | 2018-03-13 |
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