CN104629639A - Heat-stripping temporary positioning film - Google Patents
Heat-stripping temporary positioning film Download PDFInfo
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- CN104629639A CN104629639A CN201510037378.3A CN201510037378A CN104629639A CN 104629639 A CN104629639 A CN 104629639A CN 201510037378 A CN201510037378 A CN 201510037378A CN 104629639 A CN104629639 A CN 104629639A
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- layer
- auxiliary agent
- stripping
- hot soarfing
- assistant
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- Laminated Bodies (AREA)
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Abstract
The invention discloses a heat-stripping temporary positioning film, which comprises a base layer, an auxiliary later, a bonding layer and a first protective layer, wherein the base layer, the auxiliary layer, the bonding layer and the first protective layer are sequentially laminated together from bottom to top; the auxiliary layer is prepared from the following raw materials in percentage by weight: 95%-97% of resin, 0.8%-1% of a filler, 0.8%-1 of a first assistant and 0.8%-3% of an initiator; and the bonding layer is prepared from the following raw materials in percentage by weight: 50%-51% of acrylic acid 2-amphotericin B methyl ester, 35%-37% of ethylacrylic acid 2-ethyl propyl ester, 0.1%-0.2% of an initiator, 0.5%-0.7%of a second assistant, 11.5%-12.5% of silica propylene stripping assistant and 0.8%-1.5% of a third assistant. A uniform glue distribution layer is formed by virtue of the auxiliary layer and the bonding layer with specific formulas; the heat-stripping temporary positioning film has adhesive force at a room temperature; and the viscosity disappears about 30 seconds after the positioning film is heated to a proper temperature, so that simple stripping can be achieved; the stuck product is not damaged, and is free of a residue; and processed products can be well protected.
Description
Technical field
The present invention relates to film art, refer in particular to a kind of hot soarfing from locating film temporarily.
Background technology
So far, in the manufacture manufacturing procedure of ceramic plate, electronic unit etc., carry out the surface protection etc. of the temporarily fixing of various materials etc. or metal sheet etc.Bonding part for this purposes requires easily to peel off removing from adherend after application target completes, and the pressure-sensitive adhesive sheet meeting this requirement is desirable.In addition, in recent years, reprocessing relevant demand with the operation for improving yield rate is increasing, and requires to play excellent stripping removability, the pressure-sensitive adhesive sheet of separability during reprocessing.And then, even if in the pressure-sensitive adhesive sheet field of the strong cementability for residential equipment machine etc., from the viewpoint of arrange in operation produce reprocessing needs or use procedure in need repair repair etc. or application target bonding for a long time complete after recirculation, need easily can peel off from adherend pressure-sensitive adhesive sheet, can easily from the pressure-sensitive adhesive sheet that each parts decompose.Like this, in purposes as above, strong need to provide have the high bonding reliability of the various application target of reply and the easy separability after using concurrently and the pressure-sensitive adhesive sheet further with various characteristic.
Summary of the invention
In view of this, the present invention is directed to the disappearance of prior art existence, its main purpose is to provide a kind of hot soarfing from locating film temporarily, and it has the high bonding reliability of the various application target of reply and the easy separability after using concurrently.
For achieving the above object, the present invention adopts following technical scheme:
A kind of hot soarfing, from locating film temporarily, includes basic unit, supplementary layer, bonding coat and the first protective layer, this basic unit, supplementary layer, bonding coat and the first protective layer from lower to upper successively folded be located at together with;
This supplementary layer is made up of the raw material of following weight proportion: resin 95% ~ 97%; Weighting agent 0.8% ~ 1%; First auxiliary agent 0.8% ~ 1%; Initiator 0.8% ~ 3%;
This bonding coat is made up of the raw material of following weight proportion: vinylformic acid 2-Methylethyl 50% ~ 51%; Ethylacrylic acid 2-ethyl third fat 35% ~ 37%; Initiator 0.1% ~ 0.2%; Second auxiliary agent 0.5% ~ 0.7%; Auxiliary agent 11.5% ~ 12.5% peeled off by silica propylene; 3rd auxiliary agent 0.8%-1.5%.
Preferably, described resin is methacrylic acid and derivative thereof.
Preferably, described weighting agent is calcium stearate.
Preferably, described first auxiliary agent is titanium dioxide.
Preferably, described second auxiliary agent is barium sulfate.
Preferably, the bottom surface of described basic unit is provided with location glue-line, and the bottom surface of location glue-line is provided with the second protective layer.
Preferably, described basic unit is PET film.
The present invention compared with prior art has obvious advantage and beneficial effect, specifically, as shown from the above technical solution:
By adopting supplementary layer and the bonding coat of special formulation, form the glue-line that distributes uniformly, there is bounding force at normal temperatures, after being heated to suitable temperature, viscosity will disappear clean about 30 seconds time, so just can realize simple and easy stripping, do not damage by the product glued, also noresidue, converted products can well be protected, be widely used in accurate frangible wafer process, the chip-type laminated ceramic condenser of MLCC, MLCI chip inductor location is cut, semiconductor wafer surface is processed, electronics and opto-electronics parts make processing, LED and TP contact panel, glass thinning, grinding and polishing, LED positional dissection, grinding and polishing, the thinning grinding processing procedure of sapphire substrate, the transfer printing of copper base Graphene and CNT (carbon nano-tube) transfer printing etc.
For more clearly setting forth constitutional features of the present invention and effect, below in conjunction with accompanying drawing and specific embodiment, the present invention is described in detail.
Accompanying drawing explanation
Fig. 1 is sectional view of the present invention;
Fig. 2 is the sectional view of the another kind of structure of the present invention.
Accompanying drawing identifier declaration:
10, basic unit 20, supplementary layer
30, bonding coat 40, first protective layer
50, glue-line 60, second protective layer is located.
Embodiment
The present invention discloses a kind of hot soarfing from locating film temporarily; as shown in Figure 1; include basic unit 10, supplementary layer 20, bonding coat 30 and the first protective layer 40; this basic unit 10, supplementary layer 20, bonding coat 30 and the first protective layer 40 from lower to upper successively folded be located at together with; structure shown in this Fig. 1 is one side film, certainly also can be double coated film result, as shown in Figure 2; the bottom surface of this basic unit 10 is provided with location glue-line 50, and the bottom surface of location glue-line 50 is provided with the second protective layer 60.
This basic unit 10 is PET film, and the present invention selects two-way stretch PET film, PET film performance requriements; Good mechanical property, tensile strength wants high, and folding, number of bends will reach 150,000 times, and electrical isolation grade is excellent, reach the exhausted starting material of E level, heatproof 150 degrees Celsius, and 30 minutes indeformable, the positive and negative 2um of PET film thickness error.
This supplementary layer 20 is made up of the raw material of following weight proportion: resin 95% ~ 97%; Weighting agent 0.8% ~ 1%; First auxiliary agent 0.8% ~ 1%; Initiator 0.8% ~ 3%; This supplementary layer 20 selects resin, weighting agent, the first auxiliary agent and initiator to carry out emulsification making.The resin that the present invention selects is that methacrylic acid and derivative thereof are (as lipid, amides) be polymerized the resinoid made, be generally linear polymer, it can be homopolymer, also can be multipolymer, can dissolve in appropriate solvent, the present invention selects ethyl acetate to make solvent exactly, by its preparation resin emulsion, for the protection of glue-line by layer large after solvent evaporates, require that off-type force is the gathering film forming of molecule, crosslinking reaction is not had to occur during film forming, in order to realize good physical and chemical performance, the molecular weight of resin should be done large physical and chemical performance and processing characteristics compares balance, so weighting agent and the first auxiliary agent will be added, adding of weighting agent and the first auxiliary agent, when making the surface of resin molded body not form top layer, do not produce shrink mark, the distortion such as warpage, weighting agent is calcium stearate first auxiliary agent is titanium dioxide, as the use level of weighting agent, even if for its effect also can be given full play on a small quantity.The off-type force of supplementary layer is 20-50g, and supplementary layer will combine with PET film to be wanted firmly, without transfer.
This bonding coat 30 is made up of the raw material of following weight proportion: vinylformic acid 2-Methylethyl 50% ~ 51%; Ethylacrylic acid 2-ethyl third fat 35% ~ 37%; Initiator 0.1% ~ 0.2%; Second auxiliary agent 0.5% ~ 0.7%; Auxiliary agent 11.5% ~ 12.5% peeled off by silica propylene; 3rd auxiliary agent 0.8%-1.5%.Second auxiliary agent is barium sulfate, and the 3rd auxiliary agent is epoxy crosslinking agent.
When making bonding coat 30, adopt polymerization single polymerization monomer, it is propylene fat and methacrylic fat, hydroxyethyl methacrylate, second fat, wherein vinylformic acid 2-methyl acetic acid (EBA) and ethylacrylic acid 2-ethyl third fat (EBMH) are principal monomer, with the use of Ethyl acrylate (HA) and methyl methacrylate (BMA).Its methacrylic acid 2-methyl second fat (EBMH), can improve sizing agent is separation temperature.The total amount of vinylformic acid 2-methyl second fat (EBA) and ethylacrylic acid 2-ethyl third fat (EBMH) accounts for 25% and 36% of monomer total amount, be cross-linked in order to polymer moieties can be made, use the monomer with group, as vinylformic acid 2-methyl second fat (EBA) hydroxyethyl methylacrylate, Ethyl acrylate, methacrylic acid etc., preferred Ethyl acrylate and hydroxyethyl methacrylate second fat, special linking agent easy to use is like this cross-linked, several have and can the monomer of reactive functionality also can share together, initiators for polymerization can be organo-peroxide, benzoyl peroxide, isopropyl benzene hydroperoxide, many inert organic solvents, the solvent of polyreaction can be used as.
Consider the solvability to acrylic polymer, be easy to the factors such as dry and film-forming properties after coating, select methylbenzene, dimethylbenzene, ethyl acetate, the organic solvents such as butanone, can use wherein two kinds and two or more mixed solvents to add, barium sulfate 0.5% simultaneously, silica propylene stripper 15%, 0.9% 3rd auxiliary agent, polymerization starter 1%, the reaction times is determined according to temperature of reaction and reactivity.General needs 24 hours-48 hours, after the polymers soln cooling obtained, use is covered back of the body scraper type and is applied on biaxially oriented polyester film, and the thickness of film may be selected to be 0.75-0.1mm, drying channel of coating machine, temperature controls at 55 degree of-95 degree, and time of drying is generally not less than 6 minutes, and the time, very few solvent was not easy whole volatilization, and crosslinking reaction carry out dangerous, affect the cementability of pressure-sensitive adhesive film, time of drying is long, affects the effect that hot soarfing is peeled off from interim locating glue.
Evaluation test 1: acquisition hot soarfing is taken out wide 20mm from interim location film, and long 20mm is on stainless steel bonding, records peeling force 80g, then puts in baking oven, 30 seconds, and viscosity disappears, and reaches desirable effect.
Evaluation test 2: the hot soarfing of acquisition is got 150*150 (mm) from interim location film, clings to block with laminated ceramic capacitor and bond, cut into slices with cutter special, bar block is cut in range estimation confirmation, cut size accurate, be not shifted, do not fall sheet, be placed on 130 degree after baking oven for heating 1-3 minute to take out, fall sheet clean, noresidue, convenience sampling is observed, there is not crackle in sheet appearance, holds side do not produce fragment phenomenon with observation by light microscope cutting blade.
Below know-why of the present invention is described in conjunction with specific embodiments.These describe just in order to explain principle of the present invention, and can not be interpreted as limiting the scope of the invention by any way.Based on explanation herein, those skilled in the art does not need to pay performing creative labour can associate other embodiment of the present invention, and these modes all will fall within protection scope of the present invention.
Claims (7)
1. hot soarfing is from locating a film temporarily, it is characterized in that: include basic unit, supplementary layer, bonding coat and the first protective layer, this basic unit, supplementary layer, bonding coat and the first protective layer from lower to upper successively folded be located at together with;
This supplementary layer is made up of the raw material of following weight proportion: resin 95% ~ 97%; Weighting agent 0.8% ~ 1%; First auxiliary agent 0.8% ~ 1%; Initiator 0.8% ~ 3%;
This bonding coat is made up of the raw material of following weight proportion: vinylformic acid 2-Methylethyl 50% ~ 51%; Ethylacrylic acid 2-ethyl third fat 35% ~ 37%; Initiator 0.1% ~ 0.2%; Second auxiliary agent 0.5% ~ 0.7%; Auxiliary agent 11.5% ~ 12.5% peeled off by silica propylene; 3rd auxiliary agent 0.8%-1.5%.
2. a kind of hot soarfing as claimed in claim 1 is from locating film temporarily, it is characterized in that: described resin is methacrylic acid and derivative thereof.
3. a kind of hot soarfing as claimed in claim 1 is from locating film temporarily, it is characterized in that: described weighting agent is calcium stearate.
4. a kind of hot soarfing as claimed in claim 1 is from locating film temporarily, it is characterized in that: described first auxiliary agent is titanium dioxide.
5. a kind of hot soarfing as claimed in claim 1 is from locating film temporarily, it is characterized in that: described second auxiliary agent is barium sulfate.
6. a kind of hot soarfing as claimed in claim 1 is from locating film temporarily, it is characterized in that: the bottom surface of described basic unit is provided with location glue-line, and the bottom surface of location glue-line is provided with the second protective layer.
7. a kind of hot soarfing as claimed in claim 1 is from locating film temporarily, it is characterized in that: described basic unit is PET film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510037378.3A CN104629639B (en) | 2015-01-26 | 2015-01-26 | A kind of hot soarfing is from interim positioning film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510037378.3A CN104629639B (en) | 2015-01-26 | 2015-01-26 | A kind of hot soarfing is from interim positioning film |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104629639A true CN104629639A (en) | 2015-05-20 |
| CN104629639B CN104629639B (en) | 2019-04-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510037378.3A Expired - Fee Related CN104629639B (en) | 2015-01-26 | 2015-01-26 | A kind of hot soarfing is from interim positioning film |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019199561A (en) * | 2018-05-17 | 2019-11-21 | 日東電工株式会社 | Adhesive sheet |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103311342A (en) * | 2013-05-22 | 2013-09-18 | 宁波长阳科技有限公司 | Solar cell back panel film and preparation method thereof |
| CN104093802A (en) * | 2012-02-17 | 2014-10-08 | 古河电气工业株式会社 | Semiconductor-wafer-surface-protective adhesive tape |
| CN104152006A (en) * | 2014-07-10 | 2014-11-19 | 东莞市纳利光学材料有限公司 | Hardening coating and easily torn and located protective film prepared by utilizing hardening coating |
-
2015
- 2015-01-26 CN CN201510037378.3A patent/CN104629639B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104093802A (en) * | 2012-02-17 | 2014-10-08 | 古河电气工业株式会社 | Semiconductor-wafer-surface-protective adhesive tape |
| CN103311342A (en) * | 2013-05-22 | 2013-09-18 | 宁波长阳科技有限公司 | Solar cell back panel film and preparation method thereof |
| CN104152006A (en) * | 2014-07-10 | 2014-11-19 | 东莞市纳利光学材料有限公司 | Hardening coating and easily torn and located protective film prepared by utilizing hardening coating |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019199561A (en) * | 2018-05-17 | 2019-11-21 | 日東電工株式会社 | Adhesive sheet |
| JP7133355B2 (en) | 2018-05-17 | 2022-09-08 | 日東電工株式会社 | Adhesive sheet |
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| Publication number | Publication date |
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| CN104629639B (en) | 2019-04-23 |
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