CN104527196B - A kind of preparation method of the optical cement of thicker without base material - Google Patents
A kind of preparation method of the optical cement of thicker without base material Download PDFInfo
- Publication number
- CN104527196B CN104527196B CN201410848155.0A CN201410848155A CN104527196B CN 104527196 B CN104527196 B CN 104527196B CN 201410848155 A CN201410848155 A CN 201410848155A CN 104527196 B CN104527196 B CN 104527196B
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- CN
- China
- Prior art keywords
- optical cement
- mould release
- release membrance
- bondline thickness
- thicker
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/10—Removing layers, or parts of layers, mechanically or chemically
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B39/00—Layout of apparatus or plants, e.g. modular laminating systems
Abstract
The present invention relates to the preparation method of a kind of optical cement of thicker without base material, it is characterized in that comprising the steps: the bondline thickness N of thicker optical cement is decomposed into multiple bondline thickness optical cement in≤125 μm, the bondline thickness of each described optical cement is identical or different, and the bondline thickness sum of each described optical cement is N；Prepare each described optical cement according to a conventional method；The heavy mould release membrance of the both sides attachment of each described optical cement and ratio >=1.5 of the off-type force of light-duty mould release membrance, participate in ratio >=1.5 of the off-type force of the heavy mould release membrance of two compound optical cements；The light-duty mould release membrance of described optical cement is torn by laminating machine, the glue-line of each optical cement is combined with each other the most two-by-two, i.e. obtain thicker optical cement.The present invention solves the problems such as thicker glue-line application difficulties, speed of production be low, bubble, atomization, and outward appearance is good, optical good, and production cost is low, and conforming product rate is high, also can composite multifunction optical cement.
Description
Technical field
The present invention relates to acrylate series pressure-sensitive field, refer specifically to the preparation method of a kind of optical cement of thicker without base material.
Background technology
In recent years, the development of touch screen is extremely rapid, and along with growing with each passing day multimedia information inquiry, people are to touch
The application of screen gets more and more.Anacidity optical cement is owing to possessing water white transparency, full light transmission rate more than 90%, adhesive strength
Height, can solidify under room temperature or middle temperature, and cure shrinkage is little, does not produce xanthochromia, particularly to ito glass and light
Learn the advantages such as element non-corrosiveness, be widely used in touch screen industry.
Bondline thickness below 50 μm for thin optical glue, bondline thickness between 50-175 for medium-thick type optics
Glue, and bondline thickness >=175 μm for thicker optical cement.Its medium-thick type optical cement is excellent due to the section of possessing difference fillibility,
Sealing is good, and concavo-convex absorbability is good, and capacity of resisting disturbance is strong, and touch feeling is comfortable, the excellent many merits of optical property, institute
To be widely used in capacitive touch screen industry.
But heat cure acrylic ester is without base material thicker optical cement, owing to being limited by the limitation of its solid content and viscosity, one
During the solidification of secondary property coated heat, if coating is the thickest, solvent volatilization difficulty is big, easily forms bubble or increases mist degree, causing
Optical property declines；And solvent is difficult to be dried fully, residual solvent amount is higher, produces environment and pollutes and to user
Health work the mischief；Due to the limitation (general baking oven length ＜ 30m) of drying oven length, so coating speed is wanted
Controlling relatively slow, generally≤4m/min, the slowest coating speed not only production capacity is low and equipment can cause certain infringement；
And if speed ＞ 4m/min, then easily cause the generation of dry insufficient and bubble, cause yield rate low.
Existing acrylic ester the most typically can only achieve 175 μm without the thickness of base material optical cement, causes heat cure third
Olefin(e) acid ester system is without the limitation in the application of base material optical cement.
Summary of the invention
The technical problem to be solved is that the present situation for prior art provides a kind of coating speed fast and noresidue
Solvent, optical property are preferably without the preparation method of base material thicker optical cement.
The present invention solves the technical scheme that above-mentioned technical problem used: this is without the preparation method of base material thicker optical cement,
It is characterized in that comprising the steps:
The bondline thickness N of thicker optical cement is decomposed into multiple bondline thickness optical cement in≤125 μm, each described light
The bondline thickness learning glue is identical or different, and the bondline thickness sum of each described optical cement is N；Prepare each institute according to a conventional method
State optical cement；
The heavy mould release membrance of the both sides attachment of each described optical cement and ratio >=1.5 of the off-type force of light-duty mould release membrance, and join
Ratio >=1.5 with the off-type force of the heavy mould release membrance of two compound optical cements；
The light-duty mould release membrance of described optical cement is torn by laminating machine, the glue-line of each optical cement is compounded in one the most two-by-two
Rise, i.e. obtain thicker optical cement；
Described laminating machine includes first volume shaft the 1, first mould release membrance Scroll the 2, first heated oven 3, inside sets heating
The laminating axle 4 of device, winding off spindle 5, volume Two shaft the 6, second mould release membrance Scroll 7 and the second heated oven 8；Institute
Stating the first heated oven 3 at described first volume shaft 2 and to fit between axle 4, described second heated oven 8 is positioned at institute
State between volume Two shaft 2 and described laminating axle 4；Described first heated oven 3 and the temperature of described second heated oven 8
Degree is 60～80 DEG C, and optical cement is 20～40m/min through the speed of corresponding heated oven, between two are fitted between axles
Gap is the 75%～95% of bondline thickness to be composite, laminate pressure 0～1MPa, and the surface temperature of two laminating axles is 30 DEG C
～50 DEG C；
Preferably, the off-type force of the light-duty mould release membrance of each described optical cement is 3～10gf/25mm；Heavy mould release membrance from
Type power is 4.5～50gf/25mm.When off-type force is less than 3gf/25mm, glue-line and release film layer easily produce bubble etc.
Problem, when more than 50gf/25mm, easily there will be when tearing weight mould release membrance and counter shells, draws the phenomenons such as glue.
Preferably, bondline thickness≤100 μm of each described optical cement.
Further, bondline thickness≤75 μm of each described optical cement.
Bondline thickness≤50 μm of the most each described optical cement.This structure production efficiency is high, and solvent volatilization is uniform, thorough
The end, the optical cement performance after being combined is good.
Compared with prior art, the glue-line of thicker optical cement is decomposed into multiple slim glue-line by the present invention, then by slim glue
Layer is combined with each other the most two-by-two, efficiently solves disposable coating thicker glue-line application difficulties, speed of production glue low, thick
The problems such as layer solvent volatilization uneven caused bubble, atomization, not only outward appearance is good, and ensure that the light of thicker optical cement
The property learned, not only reduces production cost, and conforming product rate and production efficiency is all greatly improved, furthermore it is also possible to
Prepare the thin optical glue of different performance as required, after being combined with each other, form multi-functional thicker optical cement.Energy of the present invention
Meet the requirement of the optical cement of thicker without base material of different-thickness demand.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of optical cement in the embodiment of the present invention；
Fig. 2 is the composite principle figure of embodiment of the present invention medium-thick type optical cement；
Fig. 3 is the schematic diagram of laminating machine in the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing embodiment, the present invention is described in further detail.
Laminating machine used in each embodiment is as it is shown on figure 3, described laminating machine includes for winding the first optics to be composite
The first volume shaft 1 of glue, the first mould release membrance Scroll 2 for the rolling first light-duty mould release membrance of optical cement to be composite, use
The first heated oven 3 in heating the first optical cement to be composite；For winding the volume Two shaft of the second optical cement to be composite
6, for the second mould release membrance Scroll 7 of the rolling second light-duty mould release membrance of optical cement to be composite, second to be composite for heating
Second heated oven 8 of optical cement；And the glue-line of first, second optical cement to be composite is combined with each other two fits
Axle 4 and the winding off spindle 5 for rolling the first complex optics glue.Each axle is driven by Power Drive Unit and rotates.Laminating axle
Inside it is provided with the heater 9 for adding thermal-adhering axle.
Wherein, the first heated oven 3 is between first volume shaft 1 and laminating axle 4, and the second heated oven 8 is positioned at institute
State between volume Two shaft 6 and laminating axle 4；The temperature of described first heated oven 3 and described second heated oven 8 is
60～80 DEG C, optical cement is 20～40m/min through the speed of corresponding heated oven, the gap between two laminating axles 4
For bondline thickness to be composite 75%～95%；When can be too many to glue-line compression less than 75%, do not reach to be composite after being combined
Thickness, then there will be glue-line laminating beyond 95% bad, easily produces bubble, and interlaminar strength is deteriorated, and even there will be
Disengaging equivalent risk, laminate pressure is normally controlled in 0～1MPa, and the heating and temperature control at two laminating axles is at 30 DEG C～50
℃。
Thickness to be prepared is the optical cement of thicker without base material of N, is first decomposed into the light of multiple≤125 μm according to thickness N
Learning glue, thin optical glue is paid the utmost attention to, and bondline thickness N is decomposed into multiple optics that thickness is N1 ... Nn thickness
Glue, n >=2, N1+ ... Nn=N.
Prepare the second optics that the first optical cement ... bondline thickness is Nn that bondline thickness is N1 according to a conventional method
Glue.The structure of each optical cement is as shown in Figure 1.
The heavy mould release membrance of each optical cement both sides attachment and the off-type force of light-duty mould release membrance be respectively A and A ', A/A ' >=
1.5；Participate in two compound optical cements, the ratio of off-type force bigger in two heavy mould release membrances and another off-type force
>=1.5, so that still meeting the heavy mould release membrance ratio with the off-type force of light-duty mould release membrance after both are compound more than or equal to 1.5.
Limit heavy mould release membrance and ratio >=1.5 of light-duty mould release membrance off-type force, it is possible to smoothly tear light-duty mould release membrance and make both multiple
Close.
It is combined the principle of preparation thicker optical cement as shown in Figure 2 by the glue-line of optical cement.
First the first optical cement to be composite and the second optical cement to be composite are placed individually on first volume shaft 1 and volume Two
On shaft 6, tear both light-duty mould release membrances, be wound on respectively the first light-duty mould release membrance Scroll 2 and second light-duty from
On type film Scroll 7.The glue-line of the first optical cement to be composite and the second optical cement to be composite all adheres to heavy mould release membrance respectively
After the first heated oven 3 and the second heated oven 8 heat, enter between two laminating axles, two optics to be composite
The glue-line of glue is bonded together, and obtains the first complex optics glue that thickness is N1+N2, the both sides of the first complex optics glue
Adhere to is heavy mould release membrance and the heavy mould release membrance of the second optical cement to be composite of the first optical cement to be composite respectively；First
Ratio >=1.5 of the off-type force of the heavy mould release membrance of the heavy mould release membrance of optical cement to be composite and the second optical cement to be composite.
Compound first complex optics glue and the 3rd optical cement to be composite on laminating machine, obtain second multiple the most as stated above
Close optical cement, the bondline thickness of the second complex optics glue and at N1+N2+N3.Repeat aforesaid operations, until after Fu He
Bondline thickness is N.
The concrete data of embodiment 1 to embodiment 8 are as shown in table 1.
Comparative example 1 to 3 is the data of the directly thicker optical cement of preparation.
The adhesive tape of preparation is carried out performance test, and test result is as shown in table 1.
Wherein adhesion strength foundation GB/T2792-1998 is about the concrete grammar measuring 180 ° of peel strengths of pressure sensitive adhesive tape.
Each sample is cut into 25mm × 100mm, by free end doubling 180 °, and strip off adhesive surface on brassboard
25mm.Style free end and brassboard respectively on upper and lower holder.Release surface should be made to keep one with the experimental machine line of force
Cause.Experimental machine is peeled off continuously with 300mm/min decrease speed, autographic apparatus draw stripping curve.
Full light transmission rate and mist degree use color HM-150 haze meter test in village.
Lamination is observed by microscope.
Foaming and blushing tear the most release after by weight release glue surface fit in visual observations on glass plate.
Test result is as shown in table 1.
In table 1:
* being the ratio of the medium and heavy mould release membrance of each optical cement and the off-type force of light-duty mould release membrance, described release unit of force is
gf/25mm；
* is the ratio of the off-type force of two heavy mould release membrances of attachment on compound rear glue-line N.
In table 1, comparative example 1 to 3 is conventional production process, is i.e. directly coated on mould release membrance by the glue-line of desired thickness.
Claims (5)
1. the preparation method without base material thicker optical cement, it is characterised in that comprise the steps:
The bondline thickness N of thicker optical cement is decomposed into multiple bondline thickness optical cement in≤125 μm, each described light
The bondline thickness learning glue is identical or different, and the bondline thickness sum of each described optical cement is N；Prepare each institute according to a conventional method
State optical cement；
The heavy mould release membrance of the both sides attachment of each described optical cement and ratio >=1.5 of the off-type force of light-duty mould release membrance, participate in multiple
Ratio >=1.5 of the off-type force of the heavy mould release membrance of two optical cements closed；
The light-duty mould release membrance of described optical cement is torn by laminating machine, the glue-line of each optical cement is compounded in one the most two-by-two
Rise, i.e. obtain thicker optical cement；
Described laminating machine includes first volume shaft (1), the first mould release membrance Scroll (2), the first heated oven (3), two patches
Sympodium (4), winding off spindle (5), volume Two shaft (6), the second mould release membrance Scroll (7) and the second heated oven (8)；Described
One heated oven (3) is positioned between described first volume shaft (1) and laminating axle (4), and described second heated oven (8) is positioned at described
Between volume Two shaft (6) and described laminating axle (4)；Described first heated oven (3) and the temperature of described second heated oven (8)
Degree is 60～80 DEG C, and optical cement is 20～40m/min through the speed of corresponding heated oven, between two are fitted between axles
Gap is the 75%～95% of bondline thickness to be composite, laminate pressure 0～1MPa, and the surface temperature of two laminating axles is 30 DEG C
～50 DEG C.
Preparation method the most according to claim 1, it is characterised in that the light-duty mould release membrance of each described optical cement from
Type power is 3～10gf/25mm；The off-type force of heavy mould release membrance is 4.5～50gf/25mm.
Preparation method the most according to claim 2, it is characterised in that bondline thickness≤100 of each described optical cement
μm。
Preparation method the most according to claim 3, it is characterised in that bondline thickness≤75 μ of each described optical cement
m。
Preparation method the most according to claim 4, it is characterised in that bondline thickness≤50 μ of each described optical cement
m。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410848155.0A CN104527196B (en) | 2014-12-29 | 2014-12-29 | A kind of preparation method of the optical cement of thicker without base material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410848155.0A CN104527196B (en) | 2014-12-29 | 2014-12-29 | A kind of preparation method of the optical cement of thicker without base material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104527196A CN104527196A (en) | 2015-04-22 |
| CN104527196B true CN104527196B (en) | 2016-09-21 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108803077B (en) * | 2018-06-12 | 2020-08-28 | 湖南工学院 | Contact lens for correcting achromatopsia and manufacturing method thereof |
| CN111319271A (en) * | 2020-03-31 | 2020-06-23 | 南京汇鑫光电材料有限公司 | Thick glue multilayer laminating process |
| CN114672255A (en) * | 2022-04-27 | 2022-06-28 | 东莞爵士先进电子应用材料有限公司 | Production process of solvent type super-thick substrate-free double faced adhesive tape |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120276317A1 (en) * | 2009-12-08 | 2012-11-01 | Kiu-Yuen Tse | Optically diffusive adhesive and method of making the same |
| CN202088542U (en) * | 2011-05-27 | 2011-12-28 | 东莞创先新材料科技有限公司 | Electro-optical cement |
| CN103450821A (en) * | 2012-05-28 | 2013-12-18 | 祐鼎（福建）光电材料有限公司 | Base material-free optical adhesive tape and its manufacturing method |
| CN203077718U (en) * | 2012-10-10 | 2013-07-24 | 江阴通利光电科技有限公司 | Anti-dazzle electronic optical cement |
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