CN117677054A - Novel manufacturing process of FPC single-sided product - Google Patents
Novel manufacturing process of FPC single-sided product Download PDFInfo
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- CN117677054A CN117677054A CN202311404800.5A CN202311404800A CN117677054A CN 117677054 A CN117677054 A CN 117677054A CN 202311404800 A CN202311404800 A CN 202311404800A CN 117677054 A CN117677054 A CN 117677054A
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- fpc
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 36
- 239000000463 material Substances 0.000 claims abstract description 94
- 239000000758 substrate Substances 0.000 claims abstract description 63
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 39
- 239000011889 copper foil Substances 0.000 claims abstract description 39
- 238000007689 inspection Methods 0.000 claims abstract description 28
- 238000005096 rolling process Methods 0.000 claims abstract description 21
- 238000004140 cleaning Methods 0.000 claims abstract description 17
- 238000005520 cutting process Methods 0.000 claims abstract description 15
- 238000010030 laminating Methods 0.000 claims abstract description 12
- 238000004381 surface treatment Methods 0.000 claims abstract description 11
- 238000007650 screen-printing Methods 0.000 claims abstract description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 56
- 230000005540 biological transmission Effects 0.000 claims description 42
- 229910052742 iron Inorganic materials 0.000 claims description 28
- 238000005229 chemical vapour deposition Methods 0.000 claims description 26
- 238000007599 discharging Methods 0.000 claims description 20
- 238000005406 washing Methods 0.000 claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 13
- 239000000741 silica gel Substances 0.000 claims description 13
- 229910002027 silica gel Inorganic materials 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 11
- 238000007664 blowing Methods 0.000 claims description 10
- 238000012545 processing Methods 0.000 claims description 10
- 230000003287 optical effect Effects 0.000 claims description 9
- 238000004080 punching Methods 0.000 claims description 8
- 230000007547 defect Effects 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000003475 lamination Methods 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 5
- 230000000007 visual effect Effects 0.000 claims description 5
- 238000011161 development Methods 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 claims description 4
- 238000005530 etching Methods 0.000 claims description 4
- 239000006247 magnetic powder Substances 0.000 claims description 4
- 238000005488 sandblasting Methods 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 4
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 238000011010 flushing procedure Methods 0.000 claims description 3
- 230000037303 wrinkles Effects 0.000 abstract description 5
- 238000010023 transfer printing Methods 0.000 abstract 1
- 239000010408 film Substances 0.000 description 59
- 238000003825 pressing Methods 0.000 description 8
- 230000001105 regulatory effect Effects 0.000 description 5
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 208000025962 Crush injury Diseases 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000013039 cover film Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 150000003071 polychlorinated biphenyls Chemical class 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/02—Apparatus or processes for manufacturing printed circuits in which the conductive material is applied to the surface of the insulating support and is thereafter removed from such areas of the surface which are not intended for current conducting or shielding
- H05K3/022—Processes for manufacturing precursors of printed circuits, i.e. copper-clad substrates
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/0011—Working of insulating substrates or insulating layers
- H05K3/0044—Mechanical working of the substrate, e.g. drilling or punching
- H05K3/0052—Depaneling, i.e. dividing a panel into circuit boards; Working of the edges of circuit boards
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/0058—Laminating printed circuit boards onto other substrates, e.g. metallic substrates
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/02—Apparatus or processes for manufacturing printed circuits in which the conductive material is applied to the surface of the insulating support and is thereafter removed from such areas of the surface which are not intended for current conducting or shielding
- H05K3/06—Apparatus or processes for manufacturing printed circuits in which the conductive material is applied to the surface of the insulating support and is thereafter removed from such areas of the surface which are not intended for current conducting or shielding the conductive material being removed chemically or electrolytically, e.g. by photo-etch process
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/10—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern
- H05K3/12—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern using thick film techniques, e.g. printing techniques to apply the conductive material or similar techniques for applying conductive paste or ink patterns
- H05K3/1216—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern using thick film techniques, e.g. printing techniques to apply the conductive material or similar techniques for applying conductive paste or ink patterns by screen printing or stencil printing
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/22—Secondary treatment of printed circuits
- H05K3/26—Cleaning or polishing of the conductive pattern
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Laminated Bodies (AREA)
Abstract
The invention provides a novel manufacturing process of an FPC single-sided product, which comprises the following steps: s1, a single-sided substrate is rolled back to a bearing film before material cutting, the two sides of the bearing film are simultaneously backed by the single-sided substrate to form a double-sided copper foil substrate, and then the double-sided copper foil substrate is sequentially subjected to exposure and cutting for treatment; s2, the double-sided copper foil base material after cutting treatment is subjected to DES treatment. According to the invention, the rolling material substrate back bearing film is finished by utilizing the roller press, so that the occurrence of the conditions of bubbles and wrinkles of the rolling material substrate when the rolling material substrate is carried on the back bearing film can be effectively ensured, the CVL and the rolling material substrate are subjected to laminating treatment after being covered and attached, and the silk screen printing and the curing treatment are sequentially carried out after the surface treatment of the FPC single-sided board, so that the problems of incomplete laminating and transfer printing when the product is carried on the back bearing film to produce the laminated CVL are effectively solved, and finally, the product on the FPC single-sided board is subjected to cleaning by a comprehensive cleaning line after being torn off, and is subjected to inspection by FQC and FQA after being cleaned, thereby greatly improving the production efficiency and quality of the single-sided product.
Description
Technical Field
The invention relates to the technical field of FPC production, in particular to a novel manufacturing process of a single-sided FPC product.
Background
At present, the demand of market consumer electronics products for FPC is larger and larger, wherein the demand of 5G antenna, new energy battery and electronic flat cable products for FPC single-sided board is larger and higher.
Conventional single-sided product production flows are inefficient, low yield, such as PI12.5/15UM CU: the 12/18 substrate product has high wrinkles, crush injuries and warping defects in the production process, and therefore, the novel manufacturing process of the FPC single-sided product is provided.
Disclosure of Invention
In view of the foregoing, it is desirable to provide a novel manufacturing process for a single-sided product of an FPC, so as to solve or alleviate the technical problems existing in the prior art, and at least provide a beneficial choice.
The technical scheme of the embodiment of the invention is realized as follows: a novel manufacturing process of an FPC single-sided product comprises the following steps:
s1, a single-sided substrate is rolled back to a bearing film before material cutting, the two sides of the bearing film are simultaneously backed by the single-sided substrate to form a double-sided copper foil substrate, and then the double-sided copper foil substrate is sequentially subjected to exposure and cutting for treatment;
s2, the double-sided copper foil base material after cutting is processed through DES;
s3, performing appearance optical inspection on the double-sided copper foil substrate subjected to DES treatment through AOI;
s4, performing target punching treatment on the double-sided copper foil substrate subjected to AOI appearance optical inspection to be qualified, and then performing CVL (chemical vapor deposition) pasting treatment on the double-sided copper foil substrate subjected to target punching treatment;
s5, performing lamination treatment after covering and laminating the CVL and the double-sided copper foil base material to form an FPC single-sided board, and then performing slitting treatment on the FPC single-sided board;
s6, performing sand blasting on the FPC single-sided board subjected to the parting treatment, and then performing surface treatment on the FPC single-sided board;
s7, sequentially performing silk screen printing and curing treatment after the surface treatment of the FPC single-sided board, cleaning a product after tearing off a bearing film on the FPC single-sided board by a comprehensive cleaning line, inspecting by FQC and FQA after cleaning, and discharging after inspection is completed.
In some embodiments, in S1, the thickness of the carrier film is 20-50um, and the two single-sided substrates become double-sided copper foil substrates after the carrier film is backed up. The bearing film can protect the surface of the single-sided substrate, reduce the occurrence of accidental scratch of the single-sided substrate in the processing process, and can select the bearing film with different thickness of 20-50um according to the thickness of the single-sided substrate, the low heat shrinkage characteristic of the bearing film is suitable for the protection in the whole process and the pressing process with higher requirements, and the whole roll of single-sided substrate becomes the double-sided copper foil substrate after the bearing film is backed up.
In some embodiments, in S1, a roller press is used for the single-sided substrate when the carrier film is attached, a receiving device with film belt braking tension and a discharging device with two substrate belts braking tension are mounted on the roller press, two sets of roller press rollers are mounted in the roller press, and an anti-deviation correcting sensor is mounted on one side of the roller press. The material collecting device and the material discharging device in the roller press can be used for carrying out material rolling operation on the roller press, the anti-deviation correcting sensor is utilized for guaranteeing the material backing precision of the roller press, and meanwhile, the brake tension is utilized for guaranteeing that the single-sided base material is not easy to generate wrinkles in the film backing and bearing process.
In some embodiments, the end of the material collecting reel and the end of the material releasing reel are both provided with single-sided wallboards, the material collecting device comprises two material collecting reels which are in running fit with the middle of the single-sided wallboards, the material releasing device comprises three material releasing reels which are in running fit with the middle of the single-sided wallboards, the circumference sides of the material collecting reel and the material releasing reel are both provided with magnetic powder brakes, the material collecting reel and the material releasing reel are all inflatable shafts, the tension of the material collecting reel and the material releasing reel is 10-300mN/m, the diameter of a winding core is fixed by 3 inches, the diameter of each material collecting reel and the diameter of the material releasing reel are fixed by 2 inches, a plurality of transmission motors are fixed on the outer side of the single-sided wallboards, and the output ends of the transmission motors are respectively fixed with the end parts of the material collecting reel and the material releasing reel. Through setting up drive motor driven receipts material spool and blowing spool rotation, accomplish single face substrate and bear the weight of membrane rolling work to utilize the magnetic powder brake to control each receipts material spool and the tension of blowing spool, guarantee that single face substrate is difficult for producing the fold in the back of body bears the weight of membrane in-process.
In some embodiments, fixed wallboards are arranged on two opposite sides of two groups of rolling press rollers, each rolling press roller comprises a transmission iron wheel and a silica gel pinch roller which are in rotary fit between the two fixed wallboards, two adjusting cylinders are arranged on the upper sides of the rolling press, the output ends of the adjusting cylinders are fixed with the silica gel pinch roller, the transmission iron wheel is positioned under the silica gel pinch roller, the transmission iron wheel is made of titanium alloy materials, a heating device is arranged in the transmission iron wheel, the heating device comprises a mold temperature machine arranged in the transmission iron wheel, and one side of the mold temperature machine is connected with a temperature control switch;
one end of the two transmission iron wheels is fixed with a transmission belt, one side of the fixed wallboard is fixed with a motor, the output end of the motor is fixed with one end of the transmission belt, and the output end of the adjusting cylinder is provided with an electromagnetic valve.
The temperature of the transmission iron wheel is controlled to be between 80 ℃ and 130 ℃ by a mold temperature machine arranged in the transmission iron wheel and heated by using a heat conducting oil mode, and the transmission iron wheel is driven to move by a motor to drive a transmission belt to transmit single-sided base materials, the air pressure range of an adjusting air cylinder is controlled to be 0-10kg/cm < 2 > by an electromagnetic valve, so that the output end of the adjusting air cylinder drives a silica gel pinch roller to move towards one side close to the transmission iron wheel, and the two single-sided base materials and a bearing film are better rolled and transmitted.
In some embodiments, in S2, the DES processing steps are development, water washing, etching, water washing, stripping, water washing, chemical washing, water washing, and drying in sequence. The improvement and improvement of the DES process capability is also a precondition for the improvement and improvement of the full process capability.
In some embodiments, AOI employs visual processing techniques to detect various misassembly and solder defects on the FPC in S3, and the CVL is applied in a sheet-to-roll manner in S4. The visual processing technology of the AOI can better detect various different misloading and welding defects of the FPC, the CVL can protect the copper foil from being exposed in the air, the copper foil is prevented from being oxidized, and the copper foil is covered for subsequent surface treatment. Such as areas not requiring gold plating, are covered with CVL.
In some embodiments, in S5, a pressing device is used when the CVL and the coiled material substrate are pressed, the openings of the upper die and the lower die of the pressing device are both provided with cushions, and in S7, when the surface of the FPC single-sided board is subjected to screen printing, butterfly PAD is adopted to align, overlap and fix the front and back films. Through the blotter that sets up, the blotter compliance is suitable, can be better carry out pressfitting processing to CVL and coil stock substrate, and the positive and negative film of figure transfer counterpoint is fixed positive and negative film according to butterfly PAD counterpoint coincidence, and line operator counterpoint uses page type counterpoint mode production, guarantees the complete coincidence of positive and negative figure to guaranteed the production product front and the necessary unanimity of reverse side windowing.
In some embodiments, in the step S7, the carrier film is a middle-adhesion carrier film, the release force is controlled within 12-18mN, and an FR4 cover plate is pressed above the FPC single panel. Through the medium-viscosity carrier film adopted, the viscosity of the carrier film is stable, and the FR4 cover plate is utilized to press the FPC single-sided board, so that the carrier film can be better torn off.
In some embodiments, in S7, the product after the carrier film has been peeled off is subjected to a contour rinse, and the rinsed product is subjected to an appearance inspection and a quality inspection via FQC and FQA. The impurity dust on the surface of the product is cleaned by flushing, and appearance inspection and quality inspection are carried out by FQC and FQA, so that the yield of shipment is ensured.
By adopting the technical scheme, the embodiment of the invention has the following advantages:
according to the invention, the rolling material substrate back bearing film is finished by utilizing the roller press, so that the occurrence of the conditions of bubbles and wrinkles of the rolling material substrate when the rolling material substrate is carried out on the back bearing film can be effectively ensured, the CVL and the rolling material substrate are subjected to laminating treatment after being covered and attached to form the FPC single-sided board, and after the surface treatment of the FPC single-sided board, the silk screen printing and the curing treatment are sequentially carried out, so that the problem that the products are not compacted and transferred when the laminating CVL is produced by the back bearing film is effectively solved, finally, the products on the FPC single-sided board are subjected to cleaning by a comprehensive cleaning line after being torn off, are inspected by FQC and FQA after being cleaned, and the production efficiency and the quality of the single-sided products are greatly improved after inspection.
The foregoing summary is for the purpose of the specification only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will become apparent by reference to the drawings and the following detailed description.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the technical descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of a first embodiment of the present invention;
FIG. 2 is a flow chart of a second embodiment of the present invention;
FIG. 3 is a schematic view of a roller press according to the present invention;
fig. 4 is a schematic diagram of a pressing mode of the present invention.
Wherein the above figures include the following reference numerals:
1. a material collecting reel; 2. a discharging reel; 3. a single-sided wallboard; 4. fixing the wallboard; 5. adjusting a cylinder; 6. a transmission iron wheel; 7. a silica gel pinch roller.
Detailed Description
Hereinafter, only certain exemplary embodiments are briefly described. As will be recognized by those of skill in the pertinent art, the described embodiments may be modified in various different ways without departing from the spirit or scope of the present invention. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive.
It should be noted that the terms "first," "second," "symmetric," "array," and the like are used merely for distinguishing between description and location descriptions, and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of features indicated. Thus, a feature defining "first," "symmetry," or the like, may explicitly or implicitly include one or more such feature; also, where certain features are not limited in number by words such as "two," "three," etc., it should be noted that the feature likewise pertains to the explicit or implicit inclusion of one or more feature quantities;
in the present invention, unless explicitly specified and limited otherwise, terms such as "mounted," "connected," "secured," and the like are to be construed broadly; for example, the connection can be fixed connection, detachable connection or integrated molding; the connection may be mechanical, direct, welded, indirect via an intermediate medium, internal communication between two elements, or interaction between two elements. The specific meaning of the terms described above in the present invention will be understood by those skilled in the art from the specification and drawings in combination with specific cases.
Referring to fig. 1-4, embodiments of the present invention are described in detail below with reference to the accompanying drawings.
Example 1
As shown in fig. 1, the embodiment of the invention provides a novel manufacturing process of an FPC single-sided product, which comprises the following steps of a single-chip production process flow:
s1, a single-sided substrate is rolled back to a bearing film before material cutting, the two sides of the bearing film are simultaneously backed by the single-sided substrate to form a double-sided copper foil substrate, and then the double-sided copper foil substrate is sequentially subjected to exposure and cutting for treatment;
s2, the double-sided copper foil base material after cutting is processed through DES;
s3, performing appearance optical inspection on the double-sided copper foil substrate subjected to DES treatment through AOI;
s4, performing target punching treatment on the double-sided copper foil substrate subjected to AOI appearance optical inspection to be qualified, and then performing CVL (chemical vapor deposition) pasting treatment on the double-sided copper foil substrate subjected to target punching treatment;
s5, performing lamination treatment after covering and laminating the CVL and the double-sided copper foil base material to form an FPC single-sided board;
s6, performing sand blasting treatment on the FPC single-sided board, and then performing surface treatment on the FPC single-sided board;
s7, sequentially performing silk screen printing and curing treatment after the surface treatment of the FPC single-sided board, cleaning a product after tearing off a bearing film on the FPC single-sided board by a comprehensive cleaning line, inspecting by FQC and FQA after cleaning, and discharging after inspection is completed.
As shown in fig. 2, embodiment two
The production process flow of the roll-to-roll connecting sheet comprises the following steps:
s1, a single-sided substrate is rolled back to a bearing film before material cutting, the two sides of the bearing film are simultaneously backed by the single-sided substrate to form a double-sided copper foil substrate, and then the double-sided copper foil substrate is sequentially subjected to exposure and cutting for treatment;
s2, the double-sided copper foil base material after cutting is processed through DES;
s3, performing appearance optical inspection on the double-sided copper foil substrate subjected to DES treatment through AOI;
s4, performing target punching treatment on the double-sided copper foil substrate subjected to AOI appearance optical inspection to be qualified, and then performing CVL (chemical vapor deposition) pasting treatment on the double-sided copper foil substrate subjected to target punching treatment;
s5, performing pressurizing and pressing treatment on the CVL and the double-sided copper foil substrate in sequence after covering and laminating to form an FPC single-sided board, and then performing slitting treatment on the FPC single-sided board;
s6, performing sand blasting on the FPC single-sided board subjected to the parting treatment, and then performing surface treatment on the FPC single-sided board;
s7, sequentially performing silk screen printing and curing treatment after the surface treatment of the FPC single-sided board, cleaning a product after tearing off a bearing film on the FPC single-sided board by a comprehensive cleaning line, inspecting by FQC and FQA after cleaning, and discharging after inspection is completed.
In some embodiments, in S1, the thickness of the carrier film is 20-50um, and the two single-sided substrates become double-sided copper foil substrates after the carrier film is backed up. According to different thickness specifications of the single-sided substrate, the carrier films with different thicknesses of 20-50um can be selected.
Referring to fig. 3, in some embodiments, in S1, a roller press is used for attaching a carrier film to a single-sided substrate, a receiving device with a film braking tension and a discharging device with two substrate braking tensions are mounted on the roller press, two sets of roller press rollers are mounted in the roller press, and an anti-deviation correcting sensor is mounted on one side of the roller press.
When the single-sided base material is used for carrying the film, firstly, the single-sided base material and the carrier film are subjected to discharging through the discharging device and are conveyed to the pressing roller positions of the two sets of rolling presses to carry out material carrying, at the moment, the anti-deviation correcting sensor detects the single-sided base material and ensures the material carrying precision of equipment, and after material carrying is finished, the single-sided base material and the carrier film are wound through the material collecting device.
Referring to fig. 3, in some embodiments, the ends of the material collecting reel 1 and the material discharging reel 2 are respectively provided with a single-sided wallboard 3, the material collecting device comprises two material collecting reels 1 rotatably matched with the middle part of the single-sided wallboard 3, the material discharging device comprises three material discharging reels 2 rotatably matched with the middle part of the single-sided wallboard 3, the circumferential sides of the material collecting reel 1 and the material discharging reel 2 are respectively provided with a magnetic powder brake, the material collecting reel 1 and the material discharging reel 2 are respectively air expansion shafts, the tension of the material collecting reel 1 and the material discharging reel 2 is 10-300mN/m, the diameter of a winding core is fixed by 3 inches, the diameter of each material collecting reel 1 and the diameter of the material discharging reel 2 are fixed by 2 inches, a plurality of transmission motors are fixed on the outer side of the single-sided wallboard 3, and the output ends of the transmission motors are respectively fixed with the ends of the material collecting reel 1 and the material discharging reel 2. Two single-sided base materials and a bearing film are respectively arranged on the 2 peripheral sides of three discharging reels, wherein the bearing film is positioned between the two single-sided base materials, then the bearing film is driven by a transmission motor to rotate and discharge materials, then the two single-sided base materials and the bearing film carry out back materials through the compression rollers of two sets of rolling machines, the back materials are transmitted to the 1 peripheral sides of the collecting reels after being completed, and the materials are wound and collected through the collecting reels 1.
Referring to fig. 3, in some embodiments, two opposite sides of two sets of press rollers of a rolling machine are respectively provided with a fixed wallboard 4, each press roller of the rolling machine comprises a transmission iron wheel 6 and a silica gel pinch roller 7 which are in rotary fit between the two fixed wallboards 4, two adjusting cylinders are arranged on the upper sides of the rolling machine, the output ends of the adjusting cylinders 5 are fixed with the silica gel pinch rollers 7, the transmission iron wheels 6 are positioned under the silica gel pinch rollers 7, the transmission iron wheels 6 are made of titanium alloy materials, a heating device is arranged in the transmission iron wheels 6 and comprises a mold temperature machine arranged in the transmission iron wheels 6, and one side of the mold temperature machine is connected with a temperature control switch;
one end of the two transmission iron wheels 6 is fixed with a transmission belt, one side of the fixed wallboard 4 is fixed with a motor, the output end of the motor is fixed with one end of the transmission belt, and the output end of the adjusting cylinder 5 is provided with an electromagnetic valve. When the single-sided base material and the bearing film are transmitted to the upper part of the transmission iron wheel 6, the mold temperature machine is heated in a heat conduction oil mode, the temperature of the mold temperature machine is regulated by utilizing a temperature control switch, so that the temperature of the transmission iron wheel 6 is controlled to be 80-130 ℃, the regulating cylinder 5 and the electromagnetic valve are started, the electromagnetic valve controls the air pressure of the regulating cylinder 5, the pressure control range is 0-10kg/cm < 2 >, the regulating control is manually carried out, then the regulating cylinder 5 drives the lower-end silica gel pinch roller 7 to move towards one side close to the transmission iron wheel 6, the single-sided base material and the bearing film are positioned between the transmission iron wheel 6 and the silica gel pinch roller 7, the motor is started, the output end of the motor drives the transmission belt to rotate, and the transmission belt drives the transmission iron wheel 6 to move to transmit the upper single-sided base material and the bearing film.
In some embodiments, in S2, the DES processing steps are development, water washing, etching, water washing, stripping, water washing, chemical washing, water washing, and drying in sequence. In S3, AOI detects various incorrect mounting and welding defects on FPC by using visual processing technology, and in S4, CVL is pasted by adopting a sheet-to-roll pasting mode. The exposed or cut double-sided copper foil substrate is sequentially subjected to development, water washing, etching, water washing, film stripping, water washing, chemical washing, water washing and drying, then various different staggered mounting and welding defects on the FPC are detected by utilizing AOI (advanced optical inspection) and visual processing technology, and the qualified substrate is pasted with CVL (chemical vapor deposition) in a sheet-to-roll pasting mode.
Referring to fig. 4, in some embodiments, in S5, a lamination device is used for laminating the CVL and the coiled material substrate, buffer PADs are respectively installed at the openings of the upper and lower dies of the lamination device, and in S7, a butterfly PAD is used for aligning and overlapping the front and back films when the surface of the FPC single-sided board is subjected to screen printing. In the product line exposure process, the butterfly PAD is designed for the alignment front and back film engineering, the pattern transfer alignment front and back films are aligned and overlapped according to the butterfly PAD to fix the front and back films, the line operator alignment is produced by using a page alignment mode, the front and back patterns are ensured to be completely overlapped, and the front plate is required to check the front and back line overlap ratio and is ensured to be within 0.2 mm.
In some embodiments, in the step S7, the carrier film is a middle-adhesion carrier film, the release force is controlled within 12-18mN, and an FR4 cover plate is pressed above the FPC single panel. The viscosity of the middle adhesive bearing film is stable, the FR4 cover plate is 0.5mm thick, the plate surface and the pressing plates with four smooth sides are used for pressing the FPC single-sided board under the lower surface, one corner of the bearing film of the product starts to be torn, the bearing film cannot be stopped midway when being torn, and the product is prevented from being creased after being torn.
In some embodiments, in S7, the product after the carrier film has been peeled off is subjected to a contour rinse, and the rinsed product is subjected to an appearance inspection and a quality inspection via FQC and FQA. And the product after the bearing film is torn off is cleaned by an overall cleaning line, impurity dust on the surface of the product is cleaned, and then appearance inspection and quality inspection are carried out through FQC and FQA, and the product is discharged after the inspection is finished, so that the production efficiency of the single-sided product is greatly improved, and the scrapping condition of the product caused by wrinkles is reduced.
Wherein:
DES: one process in the circuit board flow;
AOI: automatic chemical detection;
CVL: an FPC cover film;
FPC: a flexible circuit board;
FQC: appearance inspection;
FQA: quality inspection;
butterfly PAD: the manual alignment device is used for manual alignment among printed films of multiple PCBs.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that various changes and substitutions are possible within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The novel manufacturing process of the FPC single-sided product is characterized by comprising the following steps of:
s1, a single-sided substrate is rolled back to a bearing film before material cutting, the two sides of the bearing film are simultaneously backed by the single-sided substrate to form a double-sided copper foil substrate, and then the double-sided copper foil substrate is sequentially subjected to exposure and cutting for treatment;
s2, the double-sided copper foil base material after cutting is processed through DES;
s3, performing appearance optical inspection on the double-sided copper foil substrate subjected to DES treatment through AOI;
s4, performing target punching treatment on the double-sided copper foil substrate subjected to AOI appearance optical inspection to be qualified, and then performing CVL (chemical vapor deposition) pasting treatment on the double-sided copper foil substrate subjected to target punching treatment;
s5, performing lamination treatment after covering and laminating the CVL and the double-sided copper foil base material to form an FPC single-sided board, and then performing slitting treatment on the FPC single-sided board;
s6, performing sand blasting on the FPC single-sided board subjected to the parting treatment, and then performing surface treatment on the FPC single-sided board;
s7, sequentially performing silk screen printing and curing treatment after the surface treatment of the FPC single-sided board, cleaning a product after tearing off a bearing film on the FPC single-sided board by a comprehensive cleaning line, inspecting by FQC and FQA after cleaning, and discharging after inspection is completed.
2. The novel manufacturing process of the single-sided product of the FPC as set forth in claim 1, wherein the manufacturing process comprises the following steps: in S1, the thickness of the carrier film is 20-50um.
3. The novel manufacturing process of the single-sided product of the FPC as set forth in claim 1, wherein the manufacturing process comprises the following steps: in S1, a roller press is used when a single-sided base material is attached to a bearing film, a film belt braking tension receiving device and two base material belt braking tension discharging devices are arranged on the roller press, two groups of roller press rollers are arranged in the roller press, and an anti-deviation correcting sensor is arranged on one side of the roller press.
4. A novel manufacturing process of an FPC single-sided product according to claim 3, wherein: receive material spool (1) and blowing spool (2) tip all is installed single face wallboard (3), receive material device including normal running fit in two receipts material spools (1) at single face wallboard (3) middle part, the blowing device is including normal running fit and three blowing spool (2) at single face wallboard (3) middle part, the magnetic powder brake has all been installed to the week side of receipts material spool (1) and blowing spool (2), and receipts material spool (1) and blowing spool (2) are the physiosis axle, receive the tension size of material spool (1) and blowing spool (2) and be 10-300mN/m, core diameter fixed 3 cun, each receipts material spool (1) and blowing spool (2) diameter fixed 2 cun, and the outside of single face wallboard (3) is fixed with a plurality of drive motors, the output of a plurality of drive motors is fixed with the tip of receipts material spool (1) and blowing spool (2) respectively.
5. The novel manufacturing process of the single-sided FPC product according to claim 4, wherein the manufacturing process comprises the following steps of: the two opposite sides of the two groups of rolling press rollers are respectively provided with a fixed wallboard (4), each rolling press roller comprises a transmission iron wheel (6) and a silica gel pinch roller (7) which are in rotary fit between the two fixed wallboards (4), two adjusting cylinders are arranged on the upper sides of the rolling press, the output ends of the adjusting cylinders (5) are fixed with the silica gel pinch rollers (7), the transmission iron wheels (6) are positioned under the silica gel pinch rollers (7), the transmission iron wheels (6) are made of titanium alloy materials, a heating device is arranged in each transmission iron wheel (6), each heating device comprises a mold temperature machine arranged in each transmission iron wheel (6), and one side of each mold temperature machine is connected with a temperature control switch;
one end of the two transmission iron wheels (6) is fixed with a transmission belt, one side of the fixed wallboard (4) is fixed with a motor, the output end of the motor is fixed with one end of the transmission belt, and the output end of the adjusting cylinder (5) is provided with an electromagnetic valve.
6. The novel manufacturing process of the single-sided product of the FPC as set forth in claim 1, wherein the manufacturing process comprises the following steps: in S2, the processing procedures of DES are sequentially development, water washing, etching, water washing, film stripping, water washing, chemical washing, water washing and drying.
7. The novel manufacturing process of the single-sided product of the FPC as set forth in claim 1, wherein the manufacturing process comprises the following steps: in S3, AOI detects various incorrect mounting and welding defects on FPC by using visual processing technology, and in S4, CVL is pasted by adopting a sheet-to-roll pasting mode.
8. The novel manufacturing process of the single-sided product of the FPC as set forth in claim 1, wherein the manufacturing process comprises the following steps: in S5, laminating equipment is used when laminating is carried out on the CVL and the double-sided copper foil base material, buffer cushions are arranged on openings of an upper die and a lower die of the laminating equipment, and in S7, butterfly PAD is adopted to align, overlap and fix front and back films when silk-screen printing is carried out on the surface of the FPC single-sided board.
9. The novel manufacturing process of the single-sided product of the FPC as set forth in claim 1, wherein the manufacturing process comprises the following steps: in the S7, the carrier film is a middle-adhesion carrier film, the release force is controlled within 12-18mN, and an FR4 cover plate is pressed above the FPC single panel.
10. The novel manufacturing process of the single-sided product of the FPC as set forth in claim 1, wherein the manufacturing process comprises the following steps: in S7, the product after the carrier film is torn off is subjected to contour flushing, and the product after flushing is subjected to appearance inspection and quality inspection through FQC and FQA.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311404800.5A CN117677054A (en) | 2023-10-26 | 2023-10-26 | Novel manufacturing process of FPC single-sided product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311404800.5A CN117677054A (en) | 2023-10-26 | 2023-10-26 | Novel manufacturing process of FPC single-sided product |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117677054A true CN117677054A (en) | 2024-03-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311404800.5A Pending CN117677054A (en) | 2023-10-26 | 2023-10-26 | Novel manufacturing process of FPC single-sided product |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117677054A (en) |
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2023
- 2023-10-26 CN CN202311404800.5A patent/CN117677054A/en active Pending
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