CN113002097A - Production process of dry film material - Google Patents
Production process of dry film material Download PDFInfo
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- CN113002097A CN113002097A CN202110192891.5A CN202110192891A CN113002097A CN 113002097 A CN113002097 A CN 113002097A CN 202110192891 A CN202110192891 A CN 202110192891A CN 113002097 A CN113002097 A CN 113002097A
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- 239000000463 material Substances 0.000 title claims abstract description 31
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 24
- 239000002131 composite material Substances 0.000 claims abstract description 35
- 238000003756 stirring Methods 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 claims abstract description 17
- 230000008569 process Effects 0.000 claims abstract description 15
- 239000000853 adhesive Substances 0.000 claims abstract description 11
- 230000001070 adhesive effect Effects 0.000 claims abstract description 11
- 229920006267 polyester film Polymers 0.000 claims abstract description 11
- 239000011347 resin Substances 0.000 claims abstract description 10
- 229920005989 resin Polymers 0.000 claims abstract description 10
- 239000003112 inhibitor Substances 0.000 claims abstract description 8
- 239000003999 initiator Substances 0.000 claims abstract description 8
- 239000000178 monomer Substances 0.000 claims abstract description 8
- 239000004014 plasticizer Substances 0.000 claims abstract description 8
- 238000006116 polymerization reaction Methods 0.000 claims abstract description 8
- 239000002562 thickening agent Substances 0.000 claims abstract description 8
- 239000000049 pigment Substances 0.000 claims abstract description 7
- 238000006243 chemical reaction Methods 0.000 claims abstract description 6
- 238000010521 absorption reaction Methods 0.000 claims abstract description 5
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 5
- 239000011248 coating agent Substances 0.000 claims abstract description 5
- 238000000576 coating method Methods 0.000 claims abstract description 5
- 229920000642 polymer Polymers 0.000 claims abstract description 4
- 238000001035 drying Methods 0.000 claims description 15
- 238000003825 pressing Methods 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 5
- 238000007747 plating Methods 0.000 claims description 5
- 239000004698 Polyethylene Substances 0.000 claims description 4
- 238000013329 compounding Methods 0.000 claims description 4
- 230000007613 environmental effect Effects 0.000 claims description 4
- 238000002474 experimental method Methods 0.000 claims description 4
- -1 polyethylene Polymers 0.000 claims description 4
- 229920000573 polyethylene Polymers 0.000 claims description 4
- 230000035945 sensitivity Effects 0.000 claims description 4
- 229910000679 solder Inorganic materials 0.000 claims description 3
- 230000002194 synthesizing effect Effects 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 2
- 230000008901 benefit Effects 0.000 abstract description 3
- 230000002860 competitive effect Effects 0.000 abstract description 2
- 238000010276 construction Methods 0.000 abstract description 2
- 230000006872 improvement Effects 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 8
- 239000010931 gold Substances 0.000 description 4
- 206010034960 Photophobia Diseases 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 208000013469 light sensitivity Diseases 0.000 description 3
- 238000013478 data encryption standard Methods 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- MSNOMDLPLDYDME-UHFFFAOYSA-N gold nickel Chemical compound [Ni].[Au] MSNOMDLPLDYDME-UHFFFAOYSA-N 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000007888 film coating Substances 0.000 description 1
- 238000009501 film coating Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
Images
Classifications
-
- 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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
-
- 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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- 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
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/0427—Coating with only one layer of a composition containing a polymer binder
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
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- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
Abstract
The invention discloses a production process of a dry film material, and relates to the technical field of circuit board dry film production. A production process of a dry film material comprises the following steps: s1: adding the premixed and pre-ground adhesive, the photo-polymer monomer, the initiator, the polymerization inhibitor, the thickening agent, the tackifier, the pigment and the plasticizer into an absorption reaction kettle with a stirring function according to an adding process sequence to obtain a mixed material A; s2: primarily stirring the mixed material A, adding a defoaming agent into the reaction kettle for secondary stirring, and standing for a period of time after secondary stirring to obtain dry film main body resin; s3: unreeling the biaxially oriented polyester film, and uniformly coating the surface of the biaxially oriented polyester film with a dry film main body resin to form a prefabricated composite film by using a roll coater. The invention realizes the improvement of the product performance, has international competitive advantage on the cost, breaks monopoly of foreign capital enterprises and effectively solves the problem of higher construction cost of dry film production.
Description
Technical Field
The invention relates to the technical field of circuit board dry film production, in particular to a production process of a dry film material.
Background
The film is used as an essential raw material in the production process of the laminated printed circuit board, along with the continuous enlargement of the industry, the proportion of the dry film to the production area of the laminated printed circuit board is about 1.2:1 due to the use mode, the dry film is a considerable market consumption, compared with the wet film application of the traditional process, the dry film has incomparable advantages of high efficiency, high speed, fast reaction, low energy consumption and the like, the substitution proportion reaches over 80 percent, and only the dry film with excellent performance can be widely applied to the fields of PCB imaging, solder resistance and the like. Therefore, it is necessary to discuss the technical direction of the dry film, the performance requirement and the operation simplicity of the printed circuit board product at the client are the driving force for the development of the dry film technology, and the circuit density is higher and higher due to the continuous high-end development of the circuit board industry.
At present, as the production technology of the dry film is monopolized by foreign enterprises, a set of facilities such as dry film equipment, environmental facilities, factory buildings and the like are provided, tens of millions of capital are frequently obtained, and the capital demand is very large due to the mobile capital, so that the ordinary enterprises can not bear the capital demand.
Disclosure of Invention
The present invention is directed to a dry film material production process to solve the above problems of the prior art.
In order to achieve the purpose, the invention provides the following technical scheme: a production process of a dry film material comprises the following production steps:
s1: adding the premixed and pre-ground adhesive, the photo-polymer monomer, the initiator, the polymerization inhibitor, the thickening agent, the tackifier, the pigment and the plasticizer into an absorption reaction kettle with a stirring function according to an adding process sequence to obtain a mixed material A;
s2: primarily stirring the mixed material A, adding a defoaming agent into the reaction kettle for secondary stirring, and standing for a period of time after secondary stirring to obtain dry film main body resin;
s3: unreeling the biaxially oriented polyester film, and uniformly coating the surface of the biaxially oriented polyester film with a dry film main body resin to form a prefabricated composite film by using a roll coater;
s4: feeding the prefabricated composite film into a drying oven, and drying for a period of time at a proper drying temperature to obtain a primary composite film;
s5: pressing and synthesizing the unreeled polyethylene film and the prefabricated composite film into a final composite film through an automatic film pressing machine, and collecting the final composite film through a roller;
s6: and (4) checking the compounding condition of the finished composite film, and finally submitting the composite film to a pilot plant experiment to detect indexes of all aspects of the composite film so as to obtain a finished dry film.
Further, the adding process in the step S1 includes, in order, a photopolymerizable monomer, an initiator, a polymerization inhibitor, an adhesive, a thickener, a tackifier, a plasticizer, and a colorant.
Further, the primary stirring time in the step of S2 is 20-40 minutes, the secondary stirring time is 5-15 minutes, and the standing time is 30-60 minutes.
Further, the step S3 requires the environmental cleaning level of 100-.
Further, the oven in the step S4 is dried in a hot air circulation manner, and the drying temperature is set to 45-60 ℃.
Further, the items of the detection indexes in the step S6 include film thickness, sensitivity, resolution, CET, elastic modulus, tensile strength, elongation, solder dip heat resistance, resistance to electroless Ni/Au plating, HAST resistance, TCT resistance, and PCT resistance.
Compared with the prior art, the invention has the beneficial effects that:
compared with the dry film material used in the prior domestic production, the dry film material produced by the method has greatly improved light sensitivity, resolution, adhesive force, CET, tensile strength, elongation and the like, realizes the improvement of product performance, has more international competitive advantage in cost, breaks monopoly of foreign capital enterprises, and effectively solves the problem of higher construction cost of dry film production.
Drawings
FIG. 1 is a schematic diagram of the dry film coating process of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that in the description of the present invention, the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience of description and simplification of description, and do not indicate or imply that the referred device or element must have a specific orientation, be configured in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Further, it will be appreciated that the dimensions of the various elements shown in the figures are not drawn to scale, for ease of description, and that the thickness or width of some layers may be exaggerated relative to other layers, for example.
It should be noted that like reference numerals and letters refer to like items in the following figures, and thus, once an item is defined or illustrated in one figure, it will not need to be further discussed or illustrated in detail in the description of the following figure.
The invention provides a technical scheme that: a production process of a dry film material comprises the following production steps:
s1: adding the premixed and pre-ground adhesive, the photo-polymer monomer, the initiator, the polymerization inhibitor, the thickening agent, the tackifier, the pigment and the plasticizer into an absorption reaction kettle with a stirring function according to an adding process sequence to obtain a mixed material A;
s2: primarily stirring the mixed material A, adding a defoaming agent into the reaction kettle for secondary stirring, and standing for a period of time after secondary stirring to obtain dry film main body resin;
s3: unreeling the biaxially oriented polyester film, and uniformly coating the surface of the biaxially oriented polyester film with a dry film main body resin to form a prefabricated composite film by using a roll coater;
s4: feeding the prefabricated composite film into a drying oven, and drying for a period of time at a proper drying temperature to obtain a primary composite film;
s5: pressing and synthesizing the unreeled polyethylene film and the prefabricated composite film into a final composite film through an automatic film pressing machine, and collecting the final composite film through a roller;
s6: and (4) checking the compounding condition of the finished composite film, and finally submitting the composite film to a pilot plant experiment to detect indexes of all aspects of the composite film so as to obtain a finished dry film.
The adding process in the step S1 sequentially comprises a photopolymerization monomer, an initiator, a polymerization inhibitor, an adhesive, a thickening agent, a tackifier, a plasticizer and a pigment.
The primary stirring time in the step S2 is 20-40 minutes, the secondary stirring time is 5-15 minutes, and the standing time is 30-60 minutes.
S3 step, the environmental purification level of the coating area is required to be 100-.
And the oven in the step S4 is dried in a hot air circulation mode, the drying temperature is set to be 45-60 ℃, and the drying time is kept to be 5-6 minutes.
The detection items of the detection indexes in the step S6 include film thickness, light sensitivity, resolution, CET, elastic modulus, tensile strength, elongation, dip soldering heat resistance, resistance to electroless Ni/Au plating, HAST resistance, TCT resistance, and PCT resistance, and the test results of all the items are summarized and a comparison table is prepared by referring to the relevant parameters of the existing similar products of the large-scale enterprise.
The dry film pilot test line test is required to be utilized in the production process of the printed circuit board, the method comprises the steps of utilizing a pretreatment plate grinding machine to grind a circuit board to be processed, utilizing an automatic press grinding machine to press the produced dry film and the circuit board together, utilizing a CCD (charge coupled device) exposure frame to expose the dry film, utilizing a DES (data encryption standard) line to carry out development operation on the circuit board, and finally utilizing optical scanning to carry out final processing operation, wherein the test parameters of the whole dry film pilot test line test are as follows:
TABLE 1 Dry film Pilot line test parameters
The dry film material researched and developed by the project and the product parameters of domestic first-class dry film production enterprises make comparison data, wherein the comparison parameters comprise sensitivity (ST ═ 8), resolution, CET, elastic rate, tensile strength, elongation and film thickness, so that the principle difference between the product and the like products of the existing enterprises is judged, and the obtained comparison data are as follows:
TABLE 2 comparison of Dry film materials developed in this project with domestic first-class enterprises parameters
The data obtained by performing the relevant tests on the finished dry film in the performance test of the dry film are as follows:
TABLE 3 predicted Performance parameters for New Dry films
| Item | Condition | Unit of | Index parameter |
| Film thickness | / | μm | 20-25 |
| Sensitivity of light | ST＝8 | Mj/cm2 | 13 |
| Resolution of | Punching holes | μm | 34 |
| CET | 10-6 | 57/148 | |
| Modulus of elasticity | Tensile test | Gpa | 2.3 |
| Tensile strength | Mpa | 7.6 | |
| Elongation rate | ％ | 6.0 | |
| Dip soldering Heat resistance | 260℃/10sec/3cycles | / | pass |
| Resistance to electroless Ni/Au plating | Ni：5μm，Au：0.1μm | / | pass |
| HAST resistance | 130℃/85％/6V/300h | Ω | >1.0E+12 |
| TCT resistance | -55℃/125℃/1000cycles | / | pass |
| PCT resistance | 121℃/2.1atm/100h | / | pass |
The above table shows that the dry film material developed by the project has greatly improved various indexes in the aspects of light sensitivity, resolution, adhesive force, CET, tensile strength, elongation and the like compared with the dry film material used in the current domestic production, and the practical application is as follows:
1. the resolution is improved, the exposure time tolerance is large, and more fine circuits can be manufactured.
2. The adhesive force and the covering power are improved, and the side etching is reduced.
3. Has better chemical resistance and plating resistance.
4. The membrane is flexible and has excellent pore-plugging properties.
5. The pollution to chemical nickel-gold liquid medicine and electroplating nickel-gold liquid medicine is extremely low.
6. The color contrast is obvious after exposure, and the identification is convenient.
7. The requirement for storing temperature and humidity is reduced.
8. The exposure speed is fast, and the production efficiency is high.
9. The film pasting speed is high, and the temperature requirement is low.
The working principle is as follows: when the novel dry film is produced, firstly, pre-mixing and utilizing the adhesive, the photopolymer monomer, the initiator, the polymerization inhibitor, the thickening agent, the tackifier, the pigment and the plasticizer which are pre-ground are added into an absorption reaction kettle with a stirring function according to an adding process sequence to obtain a mixed material A, the mixed material A is primarily stirred and then added with the defoaming agent into the reaction kettle for secondary stirring, the mixed material A is kept still for a period of time until dry film main body resin is obtained, the biaxially oriented polyester film is unreeled, the biaxially oriented polyester film is uniformly coated on the surface of the biaxially oriented polyester film by using a roll coater until the pre-fabricated composite film with the dry film main body resin is obtained, the pre-fabricated composite film is sent into a drying oven, the preliminarily-fabricated composite film is dried for a period of time at a proper drying temperature, the unreeled polyethylene film and the pre-fabricated composite film are, and (4) checking the compounding condition of the finished composite film, and finally submitting the composite film to a pilot plant experiment to detect indexes of all aspects of the composite film so as to obtain a finished dry film.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A production process of a dry film material is characterized by comprising the following steps: the production steps are as follows:
s1: adding the premixed and pre-ground adhesive, the photo-polymer monomer, the initiator, the polymerization inhibitor, the thickening agent, the tackifier, the pigment and the plasticizer into an absorption reaction kettle with a stirring function according to an adding process sequence to obtain a mixed material A;
s2: primarily stirring the mixed material A, adding a defoaming agent into the reaction kettle for secondary stirring, and standing for a period of time after secondary stirring to obtain dry film main body resin;
s3: unreeling the biaxially oriented polyester film, and uniformly coating the surface of the biaxially oriented polyester film with a dry film main body resin to form a prefabricated composite film by using a roll coater;
s4: feeding the prefabricated composite film into a drying oven, and drying for a period of time at a proper drying temperature to obtain a primary composite film;
s5: pressing and synthesizing the unreeled polyethylene film and the prefabricated composite film into a final composite film through an automatic film pressing machine, and collecting the final composite film through a roller;
s6: and (4) checking the compounding condition of the finished composite film, and finally submitting the composite film to a pilot plant experiment to detect indexes of all aspects of the composite film so as to obtain a finished dry film.
2. The process according to claim 1, wherein said dry film material comprises: the adding process in the step S1 sequentially comprises a photopolymerization monomer, an initiator, a polymerization inhibitor, an adhesive, a thickening agent, a tackifier, a plasticizer and a pigment.
3. The process according to claim 1, wherein said dry film material comprises: the primary stirring time in the step S2 is 20-40 minutes, the secondary stirring time is 5-15 minutes, and the standing time is 30-60 minutes.
4. The process according to claim 1, wherein said dry film material comprises: the S3 step requires the environmental cleaning grade of 100-.
5. The process according to claim 1, wherein said dry film material comprises: and the oven in the step S4 is dried in a hot air circulation mode, and the drying temperature is set to be 45-60 ℃.
6. The process according to claim 1, wherein said dry film material comprises: the detection items of the detection indexes in the step S6 include film thickness, sensitivity, resolution, CET, modulus of elasticity, tensile strength, elongation, solder dip resistance, resistance to electroless Ni/Au plating, HAST resistance, TCT resistance, and PCT resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110192891.5A CN113002097A (en) | 2021-02-20 | 2021-02-20 | Production process of dry film material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110192891.5A CN113002097A (en) | 2021-02-20 | 2021-02-20 | Production process of dry film material |
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| CN113002097A true CN113002097A (en) | 2021-06-22 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101441416A (en) * | 2008-12-18 | 2009-05-27 | 番禺南沙殷田化工有限公司 | Dry film photoresist and preparing method thereof |
| CN112045962A (en) * | 2020-07-30 | 2020-12-08 | 苏州康迪科光电新材料有限公司 | Dry film production process |
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2021
- 2021-02-20 CN CN202110192891.5A patent/CN113002097A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101441416A (en) * | 2008-12-18 | 2009-05-27 | 番禺南沙殷田化工有限公司 | Dry film photoresist and preparing method thereof |
| CN112045962A (en) * | 2020-07-30 | 2020-12-08 | 苏州康迪科光电新材料有限公司 | Dry film production process |
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Application publication date: 20210622 |
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