CN103351842B - A kind of silk printing glass polaroid pressure sensitive adhesive and silk printing glass polaroid - Google Patents
A kind of silk printing glass polaroid pressure sensitive adhesive and silk printing glass polaroid Download PDFInfo
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- CN103351842B CN103351842B CN201310325518.8A CN201310325518A CN103351842B CN 103351842 B CN103351842 B CN 103351842B CN 201310325518 A CN201310325518 A CN 201310325518A CN 103351842 B CN103351842 B CN 103351842B
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Abstract
The open a kind of silk printing glass polaroid pressure sensitive adhesive of the present invention, it comprises: pressure sensitive adhesive, bridging agent, glass couplant, weather-proof additive and tackifier. Wherein, the weight ratio of described bridging agent and pressure sensitive adhesive is: 0.2%��1.0%; The weight ratio of described glass couplant and pressure sensitive adhesive is: 0.02%��0.5%; The weight ratio of described tackifier and pressure sensitive adhesive is: 0.05%��5.0%. The situation of silk printing glass it is difficult to be applicable to relative to pressure sensitive adhesive of the prior art, pressure sensitive adhesive provided by the invention is by adding staybelite fat as tackifier, tackifier and the reaction such as bridging agent, coupling agent generate the functional group good with ink affinity, and then improve the caking ability of pressure sensitive adhesive and LCD glass silk screen printing layer, avoiding bottom silk-screen layer and form big bubble between LCD glass surface, product deaeration is effective. The present invention also provides a kind of silk printing glass polaroid with above-mentioned pressure sensitive adhesion oxidant layer.
Description
Technical field
The present invention relates to optical polarization component manufacturing technology field, particularly relate to a kind of silk printing glass polaroid pressure sensitive adhesive and silk printing glass polaroid.
Background technology
Polaroid is applicable to the multiple electro-luminescence display device such as liquid-crystal display, plasma display, and it is generally bonded on LCD glass by binding agent. At present, common LCD glass is light face, and the binding agent between itself and polaroid is by pressure sensitive adhesive (PSA, Pressuresensitiveadhesive) former glue successively adds bridging agent according to a certain percentage, weather-proof additive, glass coupling additive, diluting solvent etc. stir evenly obtained. During actual bonding, first binding agent is coated on release film, then dries through oven heat together with release film, finally the polaroid of band binding agent is fitted on LCD glass.
But, in order to obtain better display effect, also there are some LCD glass itself to have the ink silk screen printing such as pattern, form, word. These ink silk screen printing form protruding usually at LCD glass surface. At this moment, adopt existing this kind of binding agent and adhesive method, often formed between protruding bottom and LCD glass surface and fill space, cause product to disappear and steep difficulty, it is easy to occur that product is bad, affect result of use.
Summary of the invention
For the defect existed in prior art, pressure sensitive adhesion agent prescription is adjusted by the present invention, pressure sensitive adhesive is made both to have kept the clinging power between original and polaroid and liquid-crystalline glasses and weather resistance, increase again the clinging power between ink silk screen printing, avoid big bubble to produce, solve the problem of the bubble difficulty that disappears.
The present invention also provides a kind of silk printing glass polaroid comprising above-mentioned pressure sensitive adhesion oxidant layer.
For reaching above object, the present invention adopts following technical scheme.
A kind of silk printing glass polaroid pressure sensitive adhesive, it is characterised in that, it comprises: pressure sensitive adhesive, bridging agent, glass couplant, weather-proof additive and tackifier, wherein,
The weight ratio of described bridging agent and pressure sensitive adhesive is: 0.2%��1.0%;
The weight ratio of described glass couplant and pressure sensitive adhesive is: 0.02%��0.5%;
The weight ratio of described weather-proof additive and pressure sensitive adhesive is: 0.01%��0.1%;
The weight ratio of described tackifier and pressure sensitive adhesive is: 0.05%��5.0%.
As a kind of preferred embodiment, described pressure sensitive adhesive be molecular weight between 80 ten thousand to 100 ten thousand, solid content between 27% to 29%, the pressure sensitive adhesive of viscosity between 4500cps to 6000cps.
As a kind of preferred embodiment, described bridging agent is polymeric polyisocyanate, containing epoxy-functional bridging agent, containing one or more in metal chelate bridging agent; This bridging agent adding proportion is between the 0.21%��0.84% of pressure sensitive adhesive weight.
As a kind of preferred embodiment, described glass couplant is silane coupling agent, described silane coupling agent is any one in methyltrimethoxy silane, Union carbide A-162, ��-aminopropyl triethoxysilane, ��-aminopropyltrimethoxysilane or ��-aminopropyl methyl dimethoxysilane, and this glass couplant adding proportion is between the 0.05%��0.07% of pressure sensitive adhesive weight.
As a kind of preferred embodiment, described weather-proof additive is epoxy typeBridging agent, the addition of described weather-proof additive is the 0.03% of pressure sensitive adhesive weight.
As a kind of preferred embodiment, described tackifier are one or more in ester gum, modified rosin resin, hydrogenated rosin glyceride, staybelite fat; This tackifier adding proportion is between the 1.0%��2.8% of pressure sensitive adhesive weight.
The present invention also provides a kind of silk printing glass polaroid, it is characterised in that, there is the pressure sensitive adhesion oxidant layer of above-mentioned pressure sensitive adhesive between silk printing glass and polaroid.
As a kind of preferred embodiment, the thickness of described pressure sensitive adhesion oxidant layer is between 20 ��m-25 ��m.
As a kind of preferred embodiment, there is the clearance that largest interval is less than or equal to 30 ��m, the connection face indent of described clearance and pressure sensitive adhesion oxidant layer between bottom the silk-screen layer of pressure sensitive adhesion oxidant layer and silk printing glass.
As a kind of preferred embodiment, in bonding process, pressure sensitive adhesive through High Temperature High Pressure defoaming treatment, described High Temperature High Pressure defoaming treatment condition is: 50 DEG C �� 5kg/cm2��20min��
Compared with prior art, a kind of silk printing glass polaroid pressure sensitive adhesive provided by the invention, by adding staybelite as tackifier, tackifier and the reaction such as bridging agent, coupling agent generate the functional group good with ink affinity, keeping on pressure sensitive adhesive and the joint power basis between liquid-crystalline glasses, polaroid, increasing the joint power between glue and silk-screen layer, thus reach the bubble object that disappears, product deaeration is effective. Through a large amount of test, its various performance is as follows:
Especially, it is epoxy type at weather-proof additiveUnder the established condition of bridging agent, other bridging agent addition can suitably reduce, to take into account weathering resistance and cutting property of sanction.
In addition, when the molecular weight of pressure sensitive adhesive is between 80 ten thousand to 100 ten thousand, solid content is between 27% to 29%, and viscosity is between 4500cps to 6000cps; Bridging agent adding proportion is between the 0.21%��0.84% of pressure sensitive adhesive weight; Glass couplant adding proportion is between the 0.05%��0.07% of pressure sensitive adhesive weight; When tackifier adding proportion is between the 1.0%��2.8% of pressure sensitive adhesive weight; The pressure sensitive adhesive performance obtained is far superior to relevant industries standard, polaroid and silk printing glass fit after 20 ��m, bubble, and bubble surface is concavely, weather-proof (80 DEG C �� 500hr; 60 DEG C �� 90% �� 500hr) property retention is constant.
A kind of polaroid with above-mentioned pressure-sensitive adhesive mixture provided by the invention, by being limited between 20 ��m-25 ��m by the thickness of pressure sensitive adhesion oxidant layer, is convenient to control the generation of clearance. Meanwhile, owing to the largest interval between bottom the silk-screen layer of pressure sensitive adhesion oxidant layer and silk printing glass is less than or equal to 30 ��m, and the connection face indent of clearance and pressure sensitive adhesion oxidant layer, avoid clearance that the result of use of polaroid is brought impact. Especially, by adopting: 50 DEG C �� 5kg/cm2The High Temperature High Pressure of �� 20min disappears bubble condition, while ensureing pressure sensitive adhesive and silk printing glass, polaroid adhesive property, the clearance also effectively suppressed and eliminate between bottom the ink silk screen printing layer of pressure sensitive adhesion oxidant layer and silk printing glass, reach clinging power between increase and ink silk screen printing, avoid the object that big bubble produces.
Accompanying drawing explanation
Fig. 1 show existing pressure sensitive adhesive and silk-screen layer actual adhesion design sketch;
Fig. 2 show pressure sensitive adhesive provided by the invention and silk-screen layer actual adhesion design sketch;
Fig. 3 show silk printing glass polaroid structure schematic diagram provided by the invention.
Description of reference numerals:
1, silk printing glass, 2, polaroid, 3, pressure sensitive adhesion oxidant layer, 4, clearance,
11, silk-screen layer.
Embodiment
For setting forth the essence of the present invention further, below the specific embodiment of the present invention is described in detail, but it is not limited to embodiment.
Pressure-sensitive adhesive mixture embodiment
A kind of silk printing glass polaroid pressure sensitive adhesive, it comprises: pressure sensitive adhesive, weather-proof additive, bridging agent, glass couplant and tackifier. During actual fabrication, in pressure-sensitive collagen glue, ratio successively adds bridging agent, weather-proof additive, glass coupling additive, and diluting solvent also stirs evenly. In the present embodiment, it is preferable that the molecular weight of pressure sensitive adhesive is 800,000, solid content 27%, viscosity is 4500cps. Preferred diluting solvent is ethyl acetate, and the weight ratio of itself and pressure sensitive adhesive is 15%. Preferred weather-proof additive is epoxy curing agent, and the weight ratio of itself and pressure sensitive adhesive is 0.05%. Preferred bridging agent is the bridging agent containing epoxy-functional, and the weight ratio of itself and pressure sensitive adhesive is 0.21%. Preferred glass couplant is silane coupling agent, and the weight ratio of itself and pressure sensitive adhesive is 0.05%. Preferred tackifier are staybelite fat, and the weight ratio of itself and pressure sensitive adhesive is 1.0%.
The situation of silk printing glass it is difficult to be applicable to relative to pressure sensitive adhesive of the prior art, the pressure sensitive adhesive that the present embodiment provides is by adding staybelite fat as tackifier, staybelite fat and the reaction such as bridging agent, coupling agent is made to generate the functional group good with ink affinity, and then improve the caking ability of pressure sensitive adhesive and LCD glass silk screen printing layer, forming big bubble bottom silk-screen layer and between LCD glass surface when avoiding pressure sensitive adhesive to bond, product deaeration is effective. Through a large amount of test, the pressure sensitive adhesive that the present embodiment provides is wet at height high temperature resistant, resistance to, resistance to thermal shock, be also better than prior art in sticky power, bubble size, and its various test case is as follows:
As a kind of conversion embodiment of the present embodiment, the selection of described pressure sensitive adhesive, the weight ratio of described bridging agent, glass couplant, tackifier and pressure sensitive adhesive suitably adjusts. Such as:
It is 1,000,000 that pressure sensitive adhesive is elected as molecular weight, and solid content is 29%, and viscosity is the pressure sensitive adhesive of 6000cps;
The weight ratio of bridging agent and pressure sensitive adhesive is adjusted to 0.84%;
The weight ratio of glass couplant and pressure sensitive adhesive is adjusted to 0.07%;
The weight ratio of tackifier and pressure sensitive adhesive is adjusted to 2.8%;
Elect weather-proof additive as epoxy typeBridging agent, is adjusted to 0.03% by the weight ratio of weather-proof additive and pressure sensitive adhesive. Especially, it is epoxy type at weather-proof additiveEstablished condition under, other bridging agent additions suitably reduce, and avoid the excessive interpolation of bridging agent, to take into account weathering resistance and cutting property of sanction.
In other enforcement modes, described pressure sensitive adhesive is 10 ten thousand to 100 ten thousand at molecular weight, and solid content is 16% to 29%, and viscosity is select arbitrarily in the pressure sensitive adhesive between 2000cps to 8000cps. Described bridging agent is one or more in polymeric polyisocyanate, the bridging agent containing epoxy-functional, the bridging agent containing metal chelate; Bridging agent adding proportion is the 0.2%��1.0% of pressure sensitive adhesive weight. Described glass coupler is the one in methyltrimethoxy silane, Union carbide A-162, ��-aminopropyl triethoxysilane, ��-aminopropyltrimethoxysilane, ��-aminopropyl methyl dimethoxysilane; Glass couplant adding proportion is the 0.02%��0.5% of pressure sensitive adhesive weight. Described tackifier are one or more in ester gum, modified rosin resin, hydrogenated rosin glyceride, staybelite fat; Tackifier adding proportion is the 0.05%��5.0% of pressure sensitive adhesive weight. Described diluting solvent is one or more in toluene, butanone, ethyl acetate, and diluting solvent addition is the 7%��25% of pressure sensitive adhesive weight. Described weather-proof additive is first made into 1%��10% solution, and its addition is selected arbitrarily between the 0.01%��0.1% of pressure sensitive adhesive weight; It is not limited to the present embodiment.
By a large amount of experiment test, when the molecular weight of pressure sensitive adhesive is between 80 ten thousand to 100 ten thousand, solid content is between 27% to 29%, and viscosity is between 4500cps to 6000cps;
Bridging agent adding proportion is between the 0.21%��0.84% of pressure sensitive adhesive weight;
Glass couplant adding proportion is between the 0.05%��0.07% of pressure sensitive adhesive weight;
When tackifier adding proportion is between the 1.0%��2.8% of pressure sensitive adhesive weight;
The pressure sensitive adhesive performance obtained is far superior to relevant industries standard, and after polaroid glue surface plaster silk print, bubble maximum clearance is reduced to 20 ��m, and bubble surface is concavely, weather-proof (80 DEG C �� 500hr; 60 DEG C �� 90% �� 500hr) property retention is constant. As shown in Figure 2, it have chosen a kind of pressure sensitive adhesive result of use figure that scope is obtained according to the above ratio, and picture is by 50 times of amplifications. From, Fig. 2, we are difficult to find obvious bubble; And from, the existing pressure sensitive adhesive result of use figure of Fig. 1, we have even exceeded 450 ��m it can be seen that be interposed between some place between bubble, and bubble is outer gibbosity, affects polaroid result of use.
Polaroid embodiment
As shown in Figure 3, a kind of silk printing glass polaroid with pressure sensitive adhesive, it is characterised in that, there is the pressure sensitive adhesion oxidant layer 3 of above-mentioned pressure sensitive adhesive between silk printing glass 1 and polaroid 2.
Wherein, the thickness of described pressure sensitive adhesion oxidant layer 3 is between 20 ��m-25 ��m; There is the clearance 4 that largest interval is less than or equal to 30 ��m, the connection face indent of described clearance 4 and pressure sensitive adhesion oxidant layer 3 between bottom the silk-screen layer 11 of pressure sensitive adhesion oxidant layer 3 and silk printing glass 1.
Relative to, in prior art, the clearance between bottom the silk-screen layer of pressure sensitive adhesion oxidant layer and silk printing glass is big, and clearance is outer gibbosity, affects the defect of result of use; Pressure-sensitive adhesive mixture provided by the invention, when specifically bonding, the clearance 4 between bottom the silk-screen layer 11 of itself and silk printing glass 1 is less, and clearance 4 is in inner concavity, does not affect result of use; By a large amount of experiment test, clearance 4 at this moment is within 30 ��m.
More specifically, when reality uses pressure sensitive adhesive provided by the invention to bond, pressure sensitive adhesive must through High Temperature High Pressure defoaming treatment after fitting, and described High Temperature High Pressure defoaming treatment condition is: 50 DEG C �� 5kg/cm2�� 20min. By this High Temperature High Pressure defoaming treatment, while ensureing pressure sensitive adhesive and silk printing glass, polaroid adhesive property, the clearance also effectively suppressed and eliminate between bottom pressure sensitive adhesion oxidant layer and silk printing glass silk-screen layer, reach clinging power between increase and ink silk screen printing, avoid the object that big bubble produces.
The essence of the present invention has been described in detail by above embodiment, but protection scope of the present invention can not be limited with this. Apparently; under the enlightenment of essence of the present invention; the art those of ordinary skill also can carry out many improvement and modification, as long as the simple modifications, modification or the equivalent transformation that do according to the essence of the present invention, all drops within the claims of the present invention.
Claims (9)
1. a silk printing glass polaroid pressure sensitive adhesive, it is characterised in that, it comprises: pressure sensitive adhesive, bridging agent, glass couplant, weather-proof additive and tackifier, wherein,
The weight ratio of described bridging agent and pressure sensitive adhesive is: 0.2%��1.0%;
The weight ratio of described glass couplant and pressure sensitive adhesive is: 0.02%��0.5%;
The weight ratio of described weather-proof additive and pressure sensitive adhesive is: 0.01%��0.1%;
The weight ratio of described tackifier and pressure sensitive adhesive is: 0.05%��5.0%;
Described pressure sensitive adhesive be molecular weight between 80 ten thousand to 100 ten thousand, solid content between 27% to 29%, the pressure sensitive adhesive of viscosity between 4500cps to 6000cps.
2. a kind of silk printing glass polaroid pressure sensitive adhesive according to claim 1, it is characterised in that, described bridging agent is polymeric polyisocyanate, containing epoxy-functional bridging agent, containing one or more in metal chelate bridging agent; This bridging agent adding proportion is between the 0.21%��0.84% of pressure sensitive adhesive weight.
3. a kind of silk printing glass polaroid pressure sensitive adhesive according to claim 1, it is characterized in that, described glass couplant is silane coupling agent, described silane coupling agent is any one in methyltrimethoxy silane, Union carbide A-162, ��-aminopropyl triethoxysilane, ��-aminopropyltrimethoxysilane or ��-aminopropyl methyl dimethoxysilane, and this glass couplant adding proportion is between the 0.05%��0.07% of pressure sensitive adhesive weight.
4. a kind of silk printing glass polaroid pressure sensitive adhesive according to claim 1, it is characterised in that, described tackifier be ester gum, modified rosin resin, hydrogenated rosin glyceride, staybelite fat one or more; This tackifier adding proportion is between the 1.0%��2.8% of pressure sensitive adhesive weight.
5. a kind of silk printing glass polaroid pressure sensitive adhesive according to claim 1, it is characterised in that, described weather-proof additive is epoxy type bridging agent, and the addition of described weather-proof additive is the 0.03% of pressure sensitive adhesive weight.
6. a silk printing glass polaroid, it is characterised in that, there is the pressure sensitive adhesion oxidant layer of pressure sensitive adhesive as claimed in claim 1 between silk printing glass and polaroid.
7. the silk printing glass polaroid with pressure sensitive adhesive according to claim 6, it is characterised in that, the thickness of described pressure sensitive adhesion oxidant layer is between 20 ��m-25 ��m.
8. the silk printing glass polaroid with pressure sensitive adhesive according to claim 6, it is characterized in that, there is the clearance that largest interval is less than or equal to 30 ��m, the connection face indent of described clearance and pressure sensitive adhesion oxidant layer between bottom the silk-screen layer of pressure sensitive adhesion oxidant layer and silk printing glass.
9. the silk printing glass polaroid with pressure sensitive adhesive according to claim 6, it is characterised in that, in bonding process, pressure sensitive adhesive through High Temperature High Pressure defoaming treatment, described High Temperature High Pressure defoaming treatment condition is: 50 DEG C �� 5kg/cm2��20min��
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| CN111290067A (en) * | 2020-04-02 | 2020-06-16 | 佛山纬达光电材料股份有限公司 | Polaroid for wide-viewing-angle liquid crystal display |
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| CN101852943B (en) * | 2010-06-18 | 2012-05-23 | 欧浦登(福建)光学有限公司 | Polarizer of liquid crystal screen |
| JP2012149179A (en) * | 2011-01-19 | 2012-08-09 | Nitto Denko Corp | Optical acrylic pressure-sensitive adhesive composition and optical acrylic pressure-sensitive adhesive tape |
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Address after: 528100 Southwest Industrial Park, Sanshui District, Foshan City, Guangdong Province Patentee after: Foshan Weida photoelectric material Limited by Share Ltd Address before: 528100 Southwest Industrial Park, Sanshui District, Foshan City, Guangdong Province Patentee before: Winda Opto-Electronic Co., Ltd. |
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