CN103223744A - Preparation method of novel ultrathin nano peep-proof protection film - Google Patents

Abstract

The invention relates to a preparation method of a novel ultrathin nano peep-proof protection film, which is characterized in that UV light cure resin is coated on upper surface of a PET base material, a roughness surface is formed on the upper surface of PET to prepare an anti-dazzle anti-scratch layer, a layer of special bottom coat is coated on the lower surface of PET through a reticulate pattern roller, a shutter structure is produce through a mold, an optical high light transmittance low temperature sulfuration type silica gel is casted to the mold, the PET is covered on the leveling silica gel surface, one surface coated with the bottom coat is fitted with silica gel, solidification is carried out by sulphurating, the silica gel containing nano light-absorbing particles with uniform distribution is filled with slit of the shutter structure through a knife coating mode after demoulding, so that a low euphotic zone can be provided, after completing the technology, a layer of optical acrylic glue with high bonding performance is coated on the surface of a peep-proof layer, then the PET base material is covered, and another surface of the PET base material is coated a layer of silica gel to form a bonding layer.

Description

A kind of new type superthin nanometer peep-proof diaphragm preparation method

Technical field

The present invention relates to the diaphragm preparation method of a kind of mobile phone, computer, ATM display screen, be meant a kind of a kind of new type superthin nanometer peep-proof diaphragm preparation method who uses nanometer technology mold pressing preparation to have scratch resistance flower, anti-dazzle and prevent spying on especially.

Background technology

The screening glass that the display screen of mobile phone in the market, computer, ATM uses only provides the screen protection effect.Along with advent of Knowledge, the case of invading business secret is just in rising trend, and annual loss of divulging a secret because of commerce is up to tens billion of dollars.And in these leakages of a state or party secret, have the commerce more than 80% to divulge a secret because the employee causes inadequately that to sensitive information protection this information that has wherein just comprised PC is peeped.When people use computer under multiple occasions such as travelling merchants, negotiation, private meeting, can wish to have a kind of advantages of simplicity and high efficiency means can improve the PC privacy, free, safe individual usage space is provided.

Summary of the invention

In order to solve the demand of above-mentioned existence, the present invention has made following solution.

The present invention forms total thickness 300 ± 100 μ m, 60 ± 5 ° of visible angles by optical clear film (following abbreviation PET) 1, peep-proof layer 2, anti-dazzle scratch resistance flower layer 3 and adhered layer 4,0 ± 3 ° of shutter angle, case hardness 4H pencil hardness does not have obvious striped, can repeat to paste.

PET is a pet film, also can select triacetylcellulose film for use.In order to improve visual effect, its refractive index should remain between the 1.5-1.7, and light transmittance 80-98%, mist degree are 0.8%-20%, should be 25-200 μ m in order to guarantee frivolous scratch resistance flower performance film thickness.

Anti-dazzle scratch resistance flower layer be by the structure running roller at peep-proof layer upper surface coating UV light-cured type resin, forming average diameter is that 1-5 μ m, light transmittance are 88%, mist degree is that 12% male and fomale(M﹠F) is prepared from.Because of selected UV light-cured type resin has scratch resistance flower, high rigidity characteristic, make peep-proof layer upper surface possess anti-dazzle scratch resistance flower performance simultaneously.After anti-dazzle scratch resistance flower layer has prepared, be coated with the thick special primary coat of one deck 50-200nm at peep-proof layer lower surface by the reticulate pattern running roller, this primary coat is a kind of difunctional oligomer, after disperseing, dilution can on peep-proof layer base material, form the nanoscale coating easily, because of its difunctional characteristic and peep-proof layer and silica gel all have excellent then property, silica gel can be bonded together well with the peep-proof layer.Cut after this technology is finished to subsequent technique and prepare.

PET is prepared by mold pressing, and finishing impression goes out shutter on the special substance metal die of a suitable size earlier, again to die casting optical grade high transmission rate cryogenic vulcanization type silica gel, becomes the form height euphotic zone, light transmittance 75-95%; Then be covered with the peep-proof layer, the one side that makes PET scribble special primary coat is fitted with silica gel, vulcanizes under 60-200 ℃ of temperature.After treating that sulfuration finishes the demoulding, high extinction particle of nanometer and silica gel are mixed the slit of filling shutter by the scraper coating method, form the low light transmission band, wherein the high extinction particle of nanometer can be the organic or inorganic material, the requirement particle surface is coarse, it is non-conductive to be evenly distributed the back, can be coloured or colourless, and making low light transmission band light transmittance is 5-50%.Be coated with the optical grade acrylic glue of one deck high adhesiveness energy after above-mentioned technology is finished on the shutter surface, be covered with anti-dazzle scratch resistance flower layer then, and be coated with one deck silica gel at the another side of anti-dazzle scratch resistance flower layer, thickness is 3-20 μ m, makes it become adhered layer.

The peep-proof layer is that the optical characteristics by shutter realizes the peep-proof function, so shutter is crucial.In the present invention, through rigorous theoretical calculate and pilot scale checking, the angle of shutter is 00 ± 3, and high printing opacity tape thickness is 20-100 μ m, and the low light transmission tape thickness is 1-50 μ m, and when height was 50-300, visible angle the best was 60 ± 5 °.

Make wherein that the PET1 refractive index is n ₁, the low light transmission tape thickness is c, high printing opacity tape thickness is that a, the high b of being, refractive index are n ₂, incident angle is θ ₁, refraction angle is θ ₂, the theoretical calculate main formulas is seen formula (1), formula (2), formula (3).

c＜＜a......................................................(1)

θ ₁＞60°.....................................................(2)

${\sin \mathrm{\&theta;}}_1=\frac{{\mathrm{an}}_2}{n_1\sqrt{a^2+{\mathrm{<figure-callout\; id="2"\; label="b"\; filenames="HSA00000664423300011.png"\; state="\{\{state\}\}">b</figure-callout>}}^2}}...\left(3\right)$

Beneficial effect of the present invention is the shutter uniformity, and the peep-proof optical characteristics is outstanding, and top view is dazzle-free, does not have obvious black streaking, has outstanding visual experience again when the steady private effect of protection individual is good.

Description of drawings:

Fig. 1 is a structural representation of the present invention.

Fig. 2 is a theoretical calculate schematic diagram of the present invention.

Fig. 3 is a structure cutaway view of the present invention.

The specific embodiment:

As Fig. 1, the present invention is by optical clear film (following abbreviation PET) 1, peep-proof layer 2, anti-dazzle scratch resistance flower layer 3 and adhered layer 4 are formed, total thickness 300 ± 100 μ m, 60 ± 5 ° of visible angles, 0 ± 3 ° of shutter angle, case hardness 4H pencil hardness, there is not obvious striped, can repeat to paste. as Fig. 2, at PET base material upper surface coating UV light-cured type resin, make the pet sheet face form diameter 1-5 μ m, light transmittance is 88%, and mist degree is that the preparation of 12% male and fomale(M﹠F) becomes anti-dazzle scratch resistance flower layer 3, by the thick special primary coat of reticulate pattern running roller coating one deck 100-200nm, silica gel can be bonded together at the PET lower surface well with PET.Preparing angle by mould then is 00 ± 3 shutter, high printing opacity tape thickness is 70 μ m, the low light transmission tape thickness is 5 μ m, height is 200 peep-proof layer 2, preparation flow is earlier to die casting optical grade high transmission rate cryogenic vulcanization type silica gel, covered the PET sheet material after, under 180 ℃ of temperature, add sulfur curable, to contain the slit of the silica gel of the high extinction particle of equally distributed nanometer after the demoulding, and make it become the thick low light transmission band of 5 μ m by scraper coating method filling shutter.After above-mentioned technology is finished, be coated with the optical grade acrylic glue of one deck high adhesiveness energy on peep-proof layer 2 surface, be covered with the PET base material then, and be coated with one deck silica gel at the another side of PET base material, thickness is 3-20 μ m, makes it become adhered layer 4.After above-mentioned operation is finished, just formed new type superthin nanometer peep-proof diaphragm as shown in Figure 3.

Claims (13)

1. new type superthin nanometer peep-proof diaphragm preparation method; by the optical clear film; the peep-proof layer; anti-dazzle scratch resistance flower layer and adhered layer are formed; it is characterized in that being coated with anti-dazzle scratch resistance flower layer at PET base material upper surface earlier; be coated with the special primary coat of one deck at the PET lower surface by the reticulate pattern running roller; prepare hundred ultra micro leaf window construction peep-proof layers by mould then; then be coated with the optical grade acrylic glue of one deck high adhesiveness energy at the peep-proof laminar surface; be covered with the PET base material then; and at the another side of PET base material coating one deck silica gel; thickness is that 3-20 μ m makes it become adhered layer, total thickness 300 ± 100 μ m, 60 ± 5 ° of visible angles; 0 ± 3 ° of shutter angle; case hardness 4H pencil hardness does not have obvious striped, can repeat to paste.

2. by the described a kind of new type superthin nanometer peep-proof protector preparation method of claim 1, it is characterized in that refractive index should remain between the 1.5-1.7, light transmittance 80-98%, mist degree are 0.8%-20%, and thickness is 25-200 μ m.

3. by the described a kind of new type superthin nanometer peep-proof diaphragm preparation method of claim 1; it is characterized in that described anti-dazzle scratch resistance flower layer has anti-dazzle scratch resistance flower performance, be select for use the UV illumination with scratch resistance flower performance penetrate gel-type resin by the structure running roller form in the coating of PET upper surface that average diameter 1-5 μ m, light transmittance are 88%, mist degree is that 12% male and fomale(M﹠F) is prepared from.

4. by the described a kind of new type superthin nanometer peep-proof diaphragm preparation method of claim 1, it is characterized in that being coated with the thick special primary coat of one deck 50-200nm by the reticulate pattern running roller, form adhered layer, in order to fitting better with silica gel at the PET lower surface.

5. by the described a kind of special primary coat of claim 4, it is characterized in that this primary coat is a kind of difunctional oligomer, after disperseing, dilution can on the PET base material, form the nanoscale coating easily, because of its difunctional characteristic and PET and silica gel all have excellent then property, silica gel can be bonded together well with PET.

6. by the described a kind of new type superthin nanometer peep-proof diaphragm preparation method of claim 1; the structure that it is characterized in that the peep-proof layer is the ultra micro shutter; this structure is to pass through prefabricated mould; be cast in the mould by optical grade high transmission rate cryogenic vulcanization type silica gel; sulfuration is prepared under 60-200 ℃ of temperature; light transmittance is 75-95%, has formed high euphotic zone.

7. by the described a kind of new type superthin nanometer peep-proof diaphragm preparation method of claim 1, it is characterized in that scribbling and add sulfur curable again after the PET of special primary coat and ultra micro shutter upper surface are fitted.

8. by the described ultra micro blind window of claim 6 structure, it is characterized in that shutter adds the sulfur curable demoulding after, fill the slit of shutter by the scraper coating method with low-transmittance silica gel, formed the low light transmission band, light transmittance is 5-50%.

9. by the described low-transmittance silica gel of claim 8, it is characterized in that it being that high extinction particle of a kind of nanometer and silica gel are mixed, wherein the high extinction particle of nanometer can be the organic or inorganic material, requires particle surface coarse, it is non-conductive to be evenly distributed the back, can be coloured or colourless.

10. by the described a kind of new type superthin nanometer peep-proof diaphragm preparation method of claim 1; it is characterized in that peep-proof layer shutter preparation finishes the back is coated with one deck high adhesiveness energy at its lower surface optical grade acrylic glue; be covered with the PET base material then; and at the another side of PET base material coating one deck silica gel; thickness is 3-20 μ m, makes it become adhered layer.

11. by the described ultra micro shutter of claim 6, it is characterized in that learning that through theory reckoning and pilot scale checking the angle of shutter is 00 ± 3 that high printing opacity tape thickness is 20-100 μ m, the low light transmission tape thickness is 1-50 μ m, when height was 50-300, visible angle the best was 60 ± 5 °.

12. by the described theoretical calculate of claim 11, it is characterized in that making PET 1 refractive index is n ₁, the low light transmission tape thickness is c, high printing opacity tape thickness is that a, the high b of being, refractive index are n ₂, incident angle is θ ₁, refraction angle is θ ₂, the theoretical calculate main formulas is seen formula (1), formula (2), formula (3).

c＜＜a......................................................(1)

θ ₁＞60°.....................................................(2)

${\sin \mathrm{\&theta;}}_1=\frac{{\mathrm{an}}_2}{n_1\sqrt{a^2+b^2}}...\left(3\right)$

13. by the described a kind of new type superthin nanometer peep-proof diaphragm preparation method of claim 1; the ultra micro shutter uniformity that it is characterized in that the peep-proof layer; the peep-proof optical characteristics is outstanding; top view is dazzle-free; do not have obvious black streaking, when the steady private effect of protection individual is good, have outstanding visual experience again.

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