CN205443164U - Coating machine of pressure sensitive adhesive sheet that thermal energy strippable leaves - Google Patents
Coating machine of pressure sensitive adhesive sheet that thermal energy strippable leaves Download PDFInfo
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- CN205443164U CN205443164U CN201521118513.9U CN201521118513U CN205443164U CN 205443164 U CN205443164 U CN 205443164U CN 201521118513 U CN201521118513 U CN 201521118513U CN 205443164 U CN205443164 U CN 205443164U
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Abstract
The utility model relates to an electronic components makes technical field's a coating machine of pressure sensitive adhesive sheet that thermal energy strippable leaves, including coating system, conveying system, drying system and frame, the coating system including the adhesive layer coating box and the foaming layer coating box of infundibulate, at the both ends of coating box, connects the differential head of two adjustable coating thicknesss respectively, conveying system includes drive number and return idler, and the return idler is connected to the PET film substrate of the not coating of drum, receives the reel of the PET film substrate after coating adhesive layer and foaming layer and the drying, the connection drive number, drying system, be located PET film substrate above, including preceding, back tunnel type oven, every tunnel type oven, set up heating area, flat -temperature zone, cooling district in proper order from PET film substrate import to export, be equipped with updraft ventilator on the flat -temperature zone, the utility model discloses coating machine, coating are levelly and smoothly even, and be dry even, and the thickness is unanimous.
Description
Technical field
The present invention relates to electronic devices and components manufacturing technology field, specifically refer to produce the coating machine of a kind of thermal expansion strippable pressure sensitive adhesive sheet material of electronic element.
Background technology
In recent years, electronic product kind gets more and more, and function is become stronger day by day, and volume is more and more less.This Main electronic parts such as electric capacity, resistance, inductance, sensor etc. that just require to manufacture electronic product, volume is the least, and reliability to be tried one's best height.At present, only chip ceramic electron element could meet above-mentioned requirements simultaneously, and ceramic electron element is calcined through 1000 ° of C high temperature above, its insulating properties, thermostability, durability and otherwise all present excellent properties.Therefore, chip ceramic electron element manufacture, sell and use obtains vigorous growth.Manufacturing ceramic electronic component must use ceramic membrane, prints electrode on ceramic membrane, and then multiple ceramic membrane laminations, form through being laminated, cut, sintering.The application of ceramic electron element the most constantly expands.
Traditional process producing chip ceramic electron element is:
1, electronic ceramic powder is added binding agent and solvent, through being dispersed into the ceramic size of flowable；
2, ceramic size is dried and cut into square ceramic diaphragm through steel band casting machine, curtain coating, manually it is accommodated in square plastic magazine；
3, by first ceramic diaphragm pressure fixing on the corrosion resistant plate being pre-printed with coarse fecula membrane layer, electrode in printing, more manually press second ceramic diaphragm, republish electrode, until it reaches the number of plies of needs；
4, through lamination, cutting, then with cutter, electronic component green compact are scraped off from corrosion resistant plate；
5, electronic component green compact are after the high temperature sintering of more than 1000 DEG C, be polished, upper end electrode, plating, become finished product.
Above-mentioned 2nd, 3 steps need to use a large amount of manual operation, owing to labor strength is high, working hard, cause personnel serious, new worker and unskilled labor occupy the majority, and the product that manual operation is produced, the reasons such as precision does not reaches requirement, and reliability is unstable, the most for a long time, domestic traditional production line can only produce mid and low-end products, and high-end product needs supporting purchase imported product.In order to improve product specification, the most domestic numerous and confused Introduced from Japan technical equipment.Mainly substitute above-mentioned 2nd, the manual operation of 3 steps, use Machine automated operation.
In recent years the Japanese automatic assembly line introduced and the domestic process producing chip ceramic electron element digested and assimilated be:
1, electronic ceramic powder is added binding agent and solvent, through being dispersed into the ceramic size of flowable；
2, ceramic size is dried and is attached in PET film through PET film casting machine, curtain coating, being accommodated ceramic diaphragm and the two-in-one thin film of PET film of drum, and do not cut into square, conveniently deposit；
3, on the ceramic diaphragm becoming drum, print electrode, after printing has been dried, then it is accommodated ceramic diaphragm and the two-in-one thin film of PET film of drum；Take individual a square mylar, with vac sorb in ceramic diaphragm stacking station, machine automatically, from the ceramic diaphragm and the two-in-one thin film of PET film of horizontal opening, cuts and adsorbs first ceramic diaphragm having printed electrode, being pressed on mylar, cut again and adsorb second ceramic diaphragm having printed electrode, it is pressed in first ceramic diaphragm having printed electrode, the 3rd, the 4th, the rest may be inferred, until reaching the number of plies set；Finally, then peel off the mylar of bottom.If do not peeled off, then inconsistent due to the shrinkage factor of mylar and ceramic diaphragm, the bar block that multiple ceramic diaphragms are made, through lamination, is easily deformed.Through lamination, then it is stained with the pressure sensitive adhesive sheet material of a prior art；
4, through cutting, then heating pressure sensitive adhesive sheet material, electronic component green compact depart from pressure sensitive adhesive sheet material；
5, electronic component green compact are after the high temperature sintering of more than 1000 DEG C, be polished, upper end electrode, plating, become finished product.
Above-mentioned conventional production lines and the main distinction of introduction of production line are the 2nd, 3 steps different, conventional production lines manual operation, efficiency is low, corrosion resistant plate is leaned in the para-position of production process product, and aligning accuracy is low, and corrosion resistant plate is before pressing ceramic diaphragm, need to print on stainless steel the fecula membrane layer of exsiccation property after drying, the corrosion resistant plate surface making otherwise smooth becomes coarse, just can make the ceramic diaphragm adhesion-tight pressed, not fall off.Printing fecula membrane layer is handwork, tired, corrosion resistant plate Heavy Weight, production process difficult.When electronic component green compact being scraped off from corrosion resistant plate with cutter after cutting, electronic component green compact may adhere to a small amount of fecula diaphragm, after sintering, chip surface can leave speckle, its unique advantage is that ceramic diaphragm is securely seated between on corrosion resistant plate from the beginning, until after being laminated, having cut, just being scraped off, electronic component green compact are not likely to produce deformation.
The contrast of above-mentioned introduction of production line, is automatically brought into operation efficiency high, and aligning accuracy is high, shortcoming: is that the bar block that mylar is made with multiple ceramic diaphragms separates, and sticks the pressure sensitive adhesive sheet material of prior art again, and electronic component green compact exist the possibility of deformation；Two is the pressure sensitive adhesive sheet material due to prior art, the binding agent on its surface is adhesive sticker, it is i.e. sticking under room temperature, quality is soft, therefore during diced chip, the soft substrate under chip, easily make the support force of this most cleaved chip weaken, during cutting, chip is the most mobile toward this most cleaved one side, causes the possible increasing cut partially and deform.Because usual diced chip is to use formula hilted broadsword squash type from top to down cutting of cutting the dish, and single solution for diverse problems is got off, and the chip on both sides can press to respective, and majority of case can press to one side that support force weakens；Three is after electronic component green compact and pressure sensitive adhesive sheet separation, has a small amount of adhesive sticker and is attached on electronic component green compact chip, and this is that the viscous characteristics of adhesive sticker is determined, after causing sintering, chip surface can leave speckle.
Problem present in corrosion resistant plate is used in order to solve above-mentioned conventional production lines, domestic pharmaceutical industry has had people that corrosion resistant plate changes into mylar+pressure sensitive adhesive sheet material, but, use the phenomenon of " attachment of chip adhesive sticker, chip are cut partially and deformation " of pressure sensitive adhesive sheet material to yet suffer from.In order to solve this problem, Nitto Denko Corp of Japan has applied for patent: the pressure-sensitive adhesive sheets (CN1473184A) of heat-peelable, and domestic Jie Li company has applied for two patents: hot soarfing from Acrylic Pressure Sensitive Adhesive, adhesive tape and preparation method thereof (CN102559101B) and hot soarfing from the preparation method and applications (CN104371610A) of Acrylic Pressure Sensitive Adhesive.Above-mentioned three patents still use adhesive sticker pressure sensitive adhesive sheet material, and from Japan and the Related product analysis produced of domestic enterprise and on probation, the problems referred to above the most do not have been resolved.
The applicant is researching and developing tackling key problem the most always, makes every effort to solve problem above, has been achieved for certain effect.
Summary of the invention
The present invention needs the problem solved to be to overcome the deficiency that background technology production line exists, it is provided that the coating machine of a kind of thermal expansion strippable pressure sensitive adhesive sheet material.
The technical thought of the present invention: one is adhesive layer and the foaming layer that the pressure sensitive adhesive sheet surface of prior art uses adhesive sticker, changes adhesive layer and the foaming layer of dryness glue into, makes the soft substrate under chip, become rigid substrate；Two is that the two unites two into one, and becomes the application by the pressure sensitive adhesive sheet material of the mylar in background technology Yu prior art, does not i.e. peel off mylar in production process, reduces deformation；Three is to use the application coating machine coating adhesive layer and foaming layer, and uniformly, uniform drying, thickness is consistent in coating.
The technical scheme that the present invention uses is as follows:
A kind of thermal expansion strippable pressure sensitive adhesive sheet material, it includes PET film ground, on PET film ground according to lower and on be coated with adhesive layer and foaming layer, described adhesive layer is by following weight portion: polyurethane resin 50-100, polyisocyanate crosslinker 1-30, ethyl acetate 10-50, mix and blend dissolves, then coat above PET film ground, dry temperature 60-120 DEG C, dried adhesive layer thickness 10-30 μm；Described foaming layer is by following weight portion: polybutyl methacrylate or polymethyl methacrylate 50-100, organic micropowder 100-500, dioctyl phthalate 10-20, ethyl acetate 100-500, expandable microspheres 10-50, uses high speed dispersor to carry out being sufficiently mixed dispersion, is coated on described adhesive layer, dry temperature 40-80 DEG C, dried depth of foam 20-30 μm；Described PET film ground thickness 40-150 μm.
Adhesive layer and foaming layer will be coated with, and the PET film ground after Hong Ganing, being cut into length and width is respectively the square of 20-70cm, every 100-1000 opens vertical stack, it is placed in forcing press compacting, pressure 5-60 megapoise, 300 seconds time, purpose is to make adhesive layer and foaming layer surface more even uniform, and thickness is consistent.
Put into the most again and baking oven carries out ripening, 48 hours time, temperature 40-50 DEG C, it is therefore an objective to make adhesive layer and foaming layer be fully cured, and eliminate in above-mentioned compression process, the internal stress between adhesive layer, foaming layer and PET film ground three.
Adhesive layer and foaming layer are dried, the most do not possess viscosity, and i.e. less than 60 DEG C do not have viscosity, and 60-80 DEG C has slightly viscous, and heating-up temperature is higher than microsphere expansion after microsphere expansion temperature, and foaming layer is inviscid.
Strippable for one thermal expansion pressure sensitive adhesive sheet material is heated to 90-150 DEG C, foaming layer foaming and intumescing, adheres to superincumbent electronic component green compact chip, meeting Automatic-falling, and foaming layer will not stick on electronic component green compact chip.
The coating machine of a kind of thermal expansion strippable pressure sensitive adhesive sheet material, it includes coating system, induction system, drying system and frame；Described coating system, including funnel shaped adhesive layer coating box and foaming layer coating box, at the two ends of coating box, connects the differential head of two scalable coating thickness respectively；Described induction system includes driving rolls and return idler, the uncoated PET film ground of drum, connects return idler, receives coating adhesive layer and foaming layer and the reel of dried PET film ground, connects driving rolls；Described drying system, is positioned at above PET film ground, including forward and backward tunnel type baking oven, each tunnel type baking oven, arranges heating zone, flat-temperature zone, cooling area from PET film ground import to outlet order, is arranged above with extractor fan in flat-temperature zone.Front tunnel type baking oven dries temperature 60-120 DEG C, and rear tunnel type baking oven dries temperature 40-80 DEG C.
The composition of organic micropowder is the one in polypropylene, starch, polyamide, polyethylene, politef, polyvinyl alcohol, organic micropowder a diameter of 2-10 μm.
Beneficial effects of the present invention:
1, adhesive layer and foaming layer are changed into dryness glue by adhesive sticker, solve the attachment of chip adhesive sticker, chip is cut partially and problem on deformation, after foaming layer foaming and intumescing, adheres to superincumbent electronic component green compact chip, meeting Automatic-falling is clean, and foaming layer will not stick on electronic component green compact chip；
2, a kind of thermal expansion strippable pressure sensitive adhesive sheet material substitutes traditional mylar+pressure sensitive adhesive sheet material, has both saved production operation flow process and manufacturing cost, and electronic component green compact are unlikely to deform the most again；
3, a kind of thermal expansion strippable pressure sensitive adhesive sheet material uses dryness glue, can directly stack between sheet material, it is not necessary to use thin film isolation, cost-effective, manufactures and use process is convenient；
4, the coating machine of the application is used, a kind of thermal expansion strippable pressure sensitive adhesive sheet material of coating, it is coated with even uniform, thickness is consistent, uniform drying.
Accompanying drawing explanation
The coating machine of a kind of thermal expansion of Fig. 1 strippable pressure sensitive adhesive sheet material.
Fig. 2 is A-A sectional view in Fig. 1.
Fig. 3 is a kind of thermal expansion strippable pressure sensitive adhesive sheet material generalized section.
In figure, arrow is the direction of motion of PET film ground, in figure, and 1-frame, the uncoated PET film ground of 2-drum, 3-driving rolls, 4-return idler, 5-adhesive layer coating box, tunnel type baking oven before 6-, 7-extractor fan, 8-foaming layer coating box, tunnel type baking oven after 9-, 10-drum have been coated with PET film ground, the differential head of 11-scalable coating thickness, 12-PET thin film ground, 13-adhesive layer, 14-foaming layer.
Detailed description of the invention
The invention will be further described below in conjunction with the accompanying drawings.
Facility example 1:
Thermal expansion strippable pressure sensitive adhesive sheet material, it is included in above PET film ground according to lower and upper coating adhesive layer and foaming layer, described adhesive layer is by following weight portion: polyurethane resin 70, polyisocyanate crosslinker 12, ethyl acetate 36, mix and blend dissolves, then coats above PET film ground, dry temperature 90 DEG C, dried adhesive layer thickness 22 μm；Described foaming layer is by following weight portion: polybutyl methacrylate or polymethyl methacrylate 68, organic micropowder 280, dioctyl phthalate 12, ethyl acetate 320, expandable microspheres 30, uses high speed dispersor to carry out being sufficiently mixed dispersion, is coated on described adhesive layer, dry temperature 60 C, dried depth of foam 25 μm；Described PET film ground thickness 100 μm.
To be coated with the PET film ground after adhesive layer and foaming layer, and drying, being cut into length and width is respectively the square of 25cm, and every 500 vertical stack are placed in forcing press compacting, pressure 10 megapoise, 300 seconds time.Put into again and baking oven carries out ripening, 48 hours time, temperature 45 C, makes adhesive layer and foaming layer be dried and be fully cured, i.e. prepares adhesive layer densification hard, the most do not possesses viscosity, i.e. less than 60 DEG C do not have viscosity, and 60 1 80 DEG C have microviscosity, are heated to 125 DEG C, foaming layer foaming and intumescing post-foaming layer is inviscid, and Fig. 3 is its profile.
A kind of swollen strippable pressure sensitive adhesive sheet material of hot Peng, Commonly Used Size: 160 160mm180 180mm200 200mm230 230mm250 250mm, conventional selectable blowing temperature: low temperature: 90-120 DEG C, foaming in 3-5 minute is peeled off, and uses and storage temperature is less than 70 DEG C.Middle temperature: 125-135 DEG C, foaming in 3-5 minute is peeled off, and uses and storage temperature is less than 80 DEG C.High temperature: 135-145 DEG C, foaming in 3-5 minute is peeled off, and uses and storage temperature is less than 90 DEG C.
Facility example 2:
The coating machine of a kind of thermal expansion strippable pressure sensitive adhesive sheet material, as shown in Figure 1 and Figure 2, it includes funnel shaped adhesive layer coating box and foaming layer coating box, at the two ends of coating box, connects the differential head of two scalable coating thickness respectively；Induction system includes driving rolls and return idler, the uncoated PET film ground of drum, connects return idler, receives coating adhesive layer and foaming layer and the reel of dried PET film ground, connects driving rolls；Drying system, it is positioned at above PET film ground, including forward and backward tunnel type baking oven, each tunnel type baking oven, from PET film ground import, heating zone, flat-temperature zone, cooling area are set to outlet order, be arranged above with extractor fan in flat-temperature zone, front tunnel type baking oven dries temperature 60-120 DEG C, and rear tunnel type baking oven dries temperature 40-80 DEG C.
The operating process of coating machine:
1, adhesive layer binding agent and foaming layer binding agent are prepared respectively, stand-by；
2, PET film ground passes forward and backward tunnel type baking oven, opens forward and backward tunnel type baking oven heater and extractor fan, opens coating machine driving means, and PET film ground is kept in motion；
3, by adhesive layer binding agent and foaming layer binding agent, adhesive layer coating box and foaming layer coating box are poured respectively into；
4, receive coating adhesive layer and foaming layer and the spool turns of dried PET film ground, rolling, be then cut into finished product.
Facility example 3:
Water-base resin is used to replace the solvent type resin in embodiment 1, solve environmental issue, although ethyl acetate is innoxious solvent, but its abnormal smells from the patient is the biggest, a large amount of uses can cause surrounding resident to dislike, even complaining, the applicant uses the village minister water-base resin of import BASF to have developed following relevant adhesive material.
Adhesive layer binder wt proportioning: waterborne polyurethane resin 50-100, water dispersible polyisocyanate cross-linking agent or aqueous epoxy resins cross-linking agent 1-30, pure water 100-500；Mix and blend dissolves, and then coats above PET film ground, dries temperature 120 DEG C, dried adhesive layer thickness 22 μm；Foaming layer binder wt proportioning: aqueous styrene-acrylic resin 50-100, organic micropowder 100-500, pure water 100-500, ethanolamine 10-50, expandable microspheres 10-50；Use high speed dispersor to carry out being sufficiently mixed dispersion, be coated on described adhesive layer, dry temperature 70 C, dried depth of foam 25 μm.
Use production method in the same manner as in Example 1, manufacture binding agent and the binding agent of foaming layer of adhesive layer, then the coating machine of the application is used, make a kind of thermal expansion strippable pressure sensitive adhesive sheet material, through on probation, property indices all reaches the level of the solvent type resin in embodiment 1, and next step is by increasing application dynamics.
Facility example 4:
Transformation to prior art adhesive sticker pressure sensitive adhesive sheet material so that it is overcome shortcoming present in background technology:
The adhesive sticker pressure sensitive adhesive sheet material of currently available technology; use commonplace; technique and equipment also comparative maturity; as transition; facility example 4; introduce improved adhesive sticker thermal expansion strippable pressure sensitive adhesive sheet material, its be also on PET film ground according to lower and on be coated with adhesive layer and foaming layer, on its face, be covered with the release protecting film of PET after drying.Described adhesive layer is by following weight portion: polyacrylic acid pressure sensitive adhesive 100, polyurethane crosslinking and curing agent 2, ethyl acetate 100, organic micropowder 50, and mix and blend dissolves, and then coats above PET film ground, dries temperature 90 DEG C, dried adhesive layer thickness 22 μm；Described foaming layer is by following weight portion: polyacrylic acid pressure sensitive adhesive 100, polyurethane crosslinking and curing agent 2, expandable microspheres 22, ethyl acetate 80, electrostatic agent 5, use high speed dispersor to carry out being sufficiently mixed dispersion, it is coated on described adhesive layer, dries temperature 80 DEG C, dried depth of foam 25 μm；Described PET film ground thickness 100 μm, PET release protecting film 25 μm.
The organic micropowder of above-mentioned addition mainly increases adhesive layer hardness, and it is excessive to add electrostatic when electrostatic agent mainly improves foaming layer heating, separates because electrostatic crosses the foaming layer that ambassador's electronic devices and components are difficult to sheet material.Being covered with the PET film ground of release protecting film after being coated with adhesive layer and foaming layer, and drying, being cut into length and width is respectively the square of 25cm, puts into and carries out ripening in baking oven, 48 hours time, and temperature 45 C makes adhesive layer and foaming layer be fully cured.I.e. preparing toughness under the room temperature improved, be heated to 125 DEG C, foaming layer foaming and intumescing post-foaming layer is inviscid, the pressure sensitive adhesive sheet material of such a heat-peelable.
Claims (1)
1. the coating machine of a thermal expansion strippable pressure sensitive adhesive sheet material, it is characterised in that: it includes coating system, induction system, drying system and frame；Described coating system, including funnel shaped adhesive layer coating box and foaming layer coating box, at the two ends of coating box, connects the differential head of two scalable coating thickness respectively；Described induction system includes driving rolls and return idler, the uncoated PET film ground of drum, connects return idler, receives coating adhesive layer and foaming layer and the reel of dried PET film ground, connects driving rolls；Described drying system, is positioned at above PET film ground, including forward and backward tunnel type baking oven, each tunnel type baking oven, arranges heating zone, flat-temperature zone, cooling area from PET film ground import to outlet order, is arranged above with extractor fan in flat-temperature zone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521118513.9U CN205443164U (en) | 2015-12-30 | 2015-12-30 | Coating machine of pressure sensitive adhesive sheet that thermal energy strippable leaves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521118513.9U CN205443164U (en) | 2015-12-30 | 2015-12-30 | Coating machine of pressure sensitive adhesive sheet that thermal energy strippable leaves |
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| Publication Number | Publication Date |
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| CN205443164U true CN205443164U (en) | 2016-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521118513.9U Withdrawn - After Issue CN205443164U (en) | 2015-12-30 | 2015-12-30 | Coating machine of pressure sensitive adhesive sheet that thermal energy strippable leaves |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105400443A (en) * | 2015-12-30 | 2016-03-16 | 深圳市森荣地科技有限公司 | Thermal-expansion strippable pressure-sensitive adhesive sheet and coater |
-
2015
- 2015-12-30 CN CN201521118513.9U patent/CN205443164U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105400443A (en) * | 2015-12-30 | 2016-03-16 | 深圳市森荣地科技有限公司 | Thermal-expansion strippable pressure-sensitive adhesive sheet and coater |
| CN105400443B (en) * | 2015-12-30 | 2018-11-13 | 肇庆森荣地新材料科技有限公司 | It is a kind of to thermally expand strippable pressure sensitive adhesive sheet material and coating machine |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160810 Effective date of abandoning: 20181113 |
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| AV01 | Patent right actively abandoned |