Printing preparation process capable of improving performance of COF carrier tape

Abstract

The invention discloses a printing preparation process capable of improving the performance of a COF carrier tape, and relates to the technical field of COF carrier tape printing preparation, and the printing preparation process comprises the following steps: step 1, chemical pretreatment: removing pollutants such as oil stains on the surface of a COF carrier tape body through a cleaning device, and ensuring normal proceeding of subsequent printing; and 2, plasma cleaning is conducted, specifically, the pretreated COF carrier tape body is moved to a treatment box under the traction effect of a winding mechanism, plasma cleaning is conducted on a PI layer on the surface of the carrier tape through oxygen-nitrogen mixed gas, the surface performance is improved, and meanwhile a copper-tin layer is protected against oxidation. According to the printing preparation technology capable of improving the performance of the COF carrier tape, a plasma cleaning mode with the pulse interval of 0.5 s is adopted, mixed gas with the oxygen-nitrogen ratio of 4: 1 is matched, energy consumption is reduced by 40% compared with a traditional continuous discharging mode, local temperature accumulation is avoided through the pulse interval, and the oxidation rate of a copper-tin layer is controlled to be 0.1% or below; the roughness of the treated PI surface is stabilized at 50-100 nm, the binding force of the ink is improved by 50% or above, and the requirement that the ink does not fall off in long-term use is met.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of COF carrier tape printing preparation, in particular to a printing preparation process capable of improving the performance of COF carrier tape. BACKGROUND

[0002] As a key material for integrated circuit packaging, the surface printing quality of COF carrier tape directly affects the packaging reliability and signal transmission performance of chips. In the traditional COF carrier tape printing process, problems such as surface contaminants, static adsorption, and insufficient evaporation of ink solvent often occur, resulting in defects such as pinholes, poor adhesion, and ink bleeding in the printed layer. In particular, during the high-temperature baking stage, the copper-tin layer is prone to oxidation and diffusion, affecting the line precision. Although existing plasma treatment technology can improve the surface performance, continuous operation can easily cause local overheating, leading to metal layer oxidation. At the same time, the fixed size of the ion air outlet cannot adapt to different widths of the carrier tape, and is prone to treatment blind spots or unstable air speed. In addition, low solvent evaporation efficiency will prolong the baking time and increase energy consumption. SUMMARY

[0003] The present application relates to the technical field of COF carrier tape printing preparation, in particular to a printing preparation process capable of improving the performance of COF carrier tape.

[0004] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a printing preparation process capable of improving the performance of COF carrier tape, comprising the following steps: Step one: chemical pretreatment, using a cleaning device to remove contaminants such as oil stains on the surface of the COF carrier tape body to ensure the normal progress of subsequent printing; Step two: plasma cleaning, the pretreated COF carrier tape body is moved to the treatment box under the traction of the winding mechanism, and oxygen-nitrogen mixed gas is used to clean the PI layer on the surface of the carrier tape, improving the surface performance and protecting the copper-tin layer from oxidation. During the plasma cleaning process, the plasma generator works in a 0.5s pulse interval cycle, which can reduce energy consumption and avoid local overheating of the copper-tin layer on the surface of the COF carrier tape body; Step three: static ion air before printing, the COF carrier tape body after plasma cleaning is blown off by 2m / s negative ion air to remove static electricity on the surface of the COF carrier tape body and prevent impurities from adhering due to static electricity; Step four: screen printing, printing hot-set ink on the surface of the COF carrier tape body by a printing device; Step five: static ion air after printing, after printing, a 3-5m / s gradient air speed is used for zoned blowing to preferentially remove low-boiling-point solvents in the ink and reduce the subsequent baking pressure; Step six: IR pre-baking, through 1.4um short wave IR target decomposition of solvent molecules in the ink bond, realize the solvent efficient volatilization; Step seven: standing, after IR pre-baking COF carrier body, 30s-60s, to ensure the effect of IR pre-baking of COF carrier body; Step eight: IR and hot air baking, using 2.4um medium wave IR trigger ink resin crosslinking and curing, while with hot air assisted, through 0.1mm copper foil heat sink buffer thermal stress, inhibit the diffusion of tin layer, avoid ink penetration; Step nine: material collection, after quality testing, the carrier tape is wound up, and the processing is completed.

[0005] Preferably, the plasma cleaning in step two adopts the equipment including a support frame, a treatment box fixedly installed on the support frame, an exhaust mechanism installed on the upper side of the treatment box for tail gas treatment, an adjustable limiting mechanism installed in the treatment box to adapt to different widths of the COF carrier body for limiting, the COF carrier body being driven by a winding mechanism to move from left to right in the treatment box, a regulating mechanism symmetrically installed on the left and right sides of the limiting mechanism for regulating the range and wind speed of the ion wind, a plasma generator installed on the left regulating mechanism, and the plasma generator being connected with a turbulence mechanism fixed on the treatment box through a pipeline.

[0006] Preferably, the treatment box includes a control panel fixed on the front end face of the treatment box, a switchable box door installed on the treatment box, and an observation window made of transparent glass material fixed on the box door, and the treatment box is symmetrically fixed with guide rollers in contact with the COF carrier body, so that the stable movement of the COF carrier body can be ensured through the action of the guide rollers, and the processing state of the COF carrier body can be conveniently observed through the observation window.

[0007] Preferably, the exhaust mechanism includes an air guide cover arranged in the treatment box, a fan fixed on the air guide cover, and the fan being fixed with the treatment box, and the fan being connected with a waste gas filtering box fixed on the upper end face of the treatment box through a pipeline, and the waste gas filtering box being installed with an initial efficiency filter, a medium efficiency filter and a high efficiency filter from left to right, so that the waste gas can be purified to avoid direct emission of waste gas to pollute the environment.

[0008] Preferably, the limiting mechanism comprises a support fixed in the processing box, and symmetrically fixed with a supporting plate on the support, and the supporting plate is in sliding connection with the COF carrier tape body, and the supporting plate can realize the lifting of the COF carrier tape body, avoid the shaking of the COF carrier tape body in the ion wind processing process, and ensure the ion wind processing effect of the COF carrier tape body.

[0009] Preferably, the support is provided with a two-way threaded rod in bearing connection, and the two-way threaded rod is in threaded connection with the movable plate, and the movable plate is symmetrically fixed with a sliding plate on the left and right sides, and the sliding plate is in sliding connection with the support, the sliding plate is fixed with a clamping plate, and the clamping plate is in contact with the COF carrier tape body to realize the limiting effect, and through the above structure, the distance between the two clamping plates can be adjusted to adapt to the COF carrier tape body of different widths for limiting and guiding, and the normal operation of the device is ensured.

[0010] Preferably, the regulating mechanism comprises a fixed frame fixed on the support, and a wind guide box is fixed at the lower end of the fixed frame, and the left wind guide box is connected with the plasma generator fixed on the fixed frame, and the right wind guide box is connected with the negative ion generator fixed on the fixed frame, the vertical plate is slidably connected in the wind guide box, and the horizontal plate is fixed on the vertical plate and in sliding connection with the fixed frame, and the horizontal plate is connected with the clamping plate through the connecting rod, through the action of the vertical plate and the horizontal plate, the position of the vertical plate and the horizontal plate can be adjusted synchronously when the clamping plate moves, thereby providing a basic guarantee for the length adjustment of the air outlet, so as to automatically adapt to the COF carrier tape body of different widths for processing, and effectively improve the adaptability of the device.

[0011] Preferably, the horizontal plate is symmetrically fixed with a U-shaped frame on the left and right sides, and the U-shaped frame is fixed with a convex shaft at the end, and the convex shaft is in sliding connection with the inclined groove formed on the baffle, and the baffle is in sliding connection with the fixed frame, the baffle is in sliding connection with the horizontal plate, and when the horizontal plate moves to drive the U-shaped frame to move, the sliding action between the convex shaft and the inclined groove is matched, thereby realizing the adjustment of the width of the air outlet and ensuring the stability of the wind speed.

[0012] Preferably, the turbulence mechanism comprises a mixing box fixed in the processing box, and the mixing box is connected with the oxygen pipe and the nitrogen pipe through the conduit, and the proportion of oxygen transported by the oxygen pipe to nitrogen transported by the nitrogen pipe is 4:1, and the mixing box is connected with the plasma generator through the conduit, and through the mixed plasma blowing action of oxygen and nitrogen, the surface performance of the COF carrier tape body can be improved, thereby providing a basic guarantee for the subsequent printing of the COF carrier tape body.

[0013] Preferably, a fixed plate is fixed in the mixing box, a rotating shaft is connected to the fixed plate through a bearing, a fan blade is fixed to the left side of the rotating shaft, the fan blade is arranged in the inside of a wind collecting cover, the wind collecting cover is fixed in the mixing box, and a spoiler is uniformly fixed on the rotating shaft.

[0014] Compared with the prior art, the present application has the following advantages: 1. The printing preparation process capable of improving the COF carrier band performance adopts a 0.5s pulse interval plasma cleaning mode, cooperates with a mixed gas with an oxygen-nitrogen ratio of 4:1, and can reduce energy consumption by 40% compared with a traditional continuous discharge mode, and the pulse interval avoids local temperature accumulation, and the oxidation rate of the copper-tin layer is controlled to be below 0.1%; the PI surface roughness is stabilized at 50-100nm after processing, the ink adhesion is improved by more than 50%, and the requirement of no ink falling in long-term use is met; 2. The printing preparation process capable of improving the COF carrier band performance can automatically adapt different widths of the COF carrier body for processing by linkage of the limiting mechanism and the regulating mechanism, synchronous adjustment of the clamping plate spacing and the air outlet of the air guide box through rotation of the bidirectional threaded rod, full coverage of the wind field and stable wind speed, avoidance of processing blind area, improvement of the uniformity and consistency of surface treatment, no need of stopping and replacing parts, effective improvement of production efficiency, cooperation with a multi-stage waste gas filtration system, realization of harmless emission of tail gas in the processing process, and significant reduction of impurity adsorption by the two-stage electrostatic elimination mechanism of negative ion wind, improvement of product cleanliness and yield. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a front view of the overall perspective structure of the device of the present application; Figure 2 It is a front view of the perspective structure of the processing box of the present application; Figure 3 It is a front view of the perspective structure of the limiting mechanism of the present application; Figure 4 It is a side view of the perspective structure of the limiting mechanism of the present application; Figure 5 It is a side view of the perspective structure of the regulating mechanism of the present application; Figure 6 It is a front view of the perspective structure of the air guide box of the present application; Figure 7 It is a front view of the perspective structure of the spoiler mechanism of the present application.

[0016] In the figure: 1, support frame; 2, processing box; 201, control panel; 202, box door; 203, observation window; 204, guide roller; 3, COF carrier tape body; 4, exhaust mechanism; 401, wind scoop; 402, fan; 403, waste gas filter box; 5, limiting mechanism; 501, support; 502, supporting plate; 503, two-way threaded rod; 504, movable plate; 505, sliding plate; 506, clamping plate; 6, regulating mechanism; 601, fixed frame; 602, air guide box; 603, vertical plate; 604, horizontal plate; 605, connecting rod; 606, U-shaped frame; 607, convex shaft; 608, inclined chute; 609, baffle; 7, plasma generator; 8, turbulence mechanism; 801, mixing box; 802, oxygen pipe; 803, nitrogen pipe; 804, fixed plate; 805, rotating shaft; 806, fan blade; 807, wind collector; 808, turbulence plate; 9, negative ion generator; 10, air guide pipe. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0018] Please refer to Figures 1-7 The present application provides a technical solution: a printing preparation process capable of improving the performance of COF carrier tape, comprising the following steps: Step one: chemical pretreatment, remove contaminants such as oil stains on the surface of the COF carrier tape body 3 through the cleaning device to ensure the normal progress of subsequent printing; Step two: plasma cleaning, the pretreated COF carrier tape body 3 is moved to the processing box 2 under the traction of the winding mechanism, and the surface PI layer of the carrier tape is cleaned by plasma using oxygen-nitrogen mixed gas to improve the surface performance and protect the copper-tin layer from oxidation. In the process of plasma cleaning, the plasma generator 7 works in a cycle with a 0.5s pulse interval, which can not only reduce energy consumption, but also avoid the oxidation of the copper-tin layer on the surface of the COF carrier tape body 3 caused by excessive local temperature; Step three: static electricity removal by ion wind before printing, the COF carrier tape body 3 after plasma cleaning is blown away by 2m / s negative ion wind to remove static electricity on the surface of the COF carrier tape body 3 and avoid impurities from adhering due to static electricity; Step four: screen printing, hot-set ink is printed on the surface of the COF carrier tape body 3 by the printing device; Step five: print after static ion wind, after printing, using 3-5m / s gradient wind speed zoning blowing, preferentially removing low boiling point solvents in ink, reducing subsequent baking pressure; Step six: IR pre-baking, through 1.4μm short wave IR 90℃ / 20 seconds target decomposition of solvent molecules in the ink, realize the efficient volatilization of solvent; Step seven: static, after IR pre-baking of COF carrier tape body 3, static 30s-60s, ensure the IR pre-baking effect of COF carrier tape body 3; Step eight: IR and hot air baking, using 2.4μm medium wave IR 160℃ / 80 seconds trigger ink resin crosslinking and curing, at the same time with hot air auxiliary, through 0.1mm copper foil heat sink buffer thermal stress, inhibit tin layer diffusion, avoid ink penetration; Step nine: material collection, after quality detection, the carrier tape after curing baking is wound, completing processing.

[0019] A printing preparation process for improving the performance of COF carrier tape, including support frame 1, support frame 1 is fixedly installed with treatment box 2, treatment box 2 is installed with exhaust mechanism 4 on the upper side for tail gas treatment, adjustable limiting mechanism 5 is installed in treatment box 2 to adapt to different widths of COF carrier tape body 3 for limiting, COF carrier tape body 3 is driven by winding mechanism to move from left to right in treatment box 2, limiting mechanism 5 is installed with control mechanism 6 on the left and right for controlling the range and wind speed of ion wind, plasma generator 7 is installed on the left control mechanism 6, plasma generator 7 is connected with spoiler mechanism 8 fixed on treatment box 2 through a pipe, negative ion generator 9 is fixed on the right control mechanism 6, negative ion generator 9 is connected with air guide pipe 10; Treatment box 2 includes control panel 201 fixed on the front end face of treatment box 2, and treatment box 2 is installed with openable box door 202, and box door 202 is fixed with observation window 203 made of transparent glass material, treatment box 2 is fixed with guide roller 204 on the left and right, and guide roller 204 is in contact with COF carrier tape body 3; Limiting mechanism 5 includes support 501 fixed in treatment box 2, and support 501 is fixed with supporting plate 502 on the left and right, and supporting plate 502 is in contact with COF carrier tape body 3 to form sliding connection; Support 501 is connected with bidirectional threaded rod 503 through bearing, bidirectional threaded rod 503 is connected with movable plate 504 through thread, movable plate 504 is fixed with sliding plate 505 on the left and right, and sliding plate 505 is connected with support 501 through sliding, sliding plate 505 is fixed with clamping plate 506, and clamping plate 506 is in contact with COF carrier tape body 3 to realize limiting effect; When using the printing preparation process for improving the performance of COF carrier tape, Figures 1-7As shown, first, the position of the clamping plates 506 is adjusted according to the width of the COF carrier tape body 3, the box door 202 is opened, and the bidirectional threaded rod 503 is rotated, the threaded connection between the bidirectional threaded rod 503 and the movable plates 504 can move the two movable plates 504, thereby driving the sliding plates 505 to move, the sliding guide between the sliding plates 505 and the supports 501 can ensure the stability of the movable plates 504, and when the sliding plates 505 slide, the clamping plates 506 are driven to move synchronously, thereby adjusting the distance between the two clamping plates 506, the two clamping plates 506 limit and guide the COF carrier tape body 3, and the subsequent processing of the COF carrier tape body 3 is facilitated, after the adjustment is completed, the chemically pretreated COF carrier tape body 3 moves from left to right under the traction of the winding mechanism, and the guiding effect of the guide rollers 204 can ensure the stability of the COF carrier tape body 3; The turbulence mechanism 8 comprises a mixing box 801 fixed in the treatment box 2, the mixing box 801 is connected with the oxygen pipe 802 and the nitrogen pipe 803 through pipes, the proportion of oxygen delivered by the oxygen pipe 802 to nitrogen delivered by the nitrogen pipe 803 is 4:1, and the mixing box 801 is connected with the plasma generator 7 through a pipe; the mixing box 801 is fixed with a fixed plate 804, the fixed plate 804 is connected with a rotating shaft 805 through a bearing, the left side of the rotating shaft 805 is fixed with a fan blade 806, the fan blade 806 is arranged on the inner side of a wind collecting cover 807, the wind collecting cover 807 is fixed in the mixing box 801, and the rotating shaft 805 is also uniformly fixed with turbulence plates 808; When the COF carrier body 3 moves to the left side of the control mechanism 6, oxygen and nitrogen are pumped into the mixing box 801 through the oxygen pipe 802 and the nitrogen pipe 803 in a ratio of 4:1. At this time, under the action of the gas flow, the fan blade 806 can drive the rotating shaft 805 to rotate, thereby driving the spoiler 808 to rotate. Through the rotation of the spoiler 808, the oxygen and nitrogen in the mixing box 801 can be uniformly mixed. The uniformly mixed gas enters the plasma generator 7 to be ionized to form plasma, which is blown to the surface of the COF carrier body 3 by the control mechanism 6, thereby realizing the treatment of the surface of the COF carrier body 3. Through the blowing of the plasma, the surface performance of the COF carrier body 3 can be improved. The plasma generator 7 works in a cycle with a pulse interval of 0.5s, which can not only reduce energy consumption, but also avoid the oxidation of the copper-tin layer on the surface of the COF carrier body 3 caused by excessive local temperature, thereby ensuring the plasma treatment effect of the surface of the COF carrier body 3. When the COF carrier body 3 moves to the right side of the control mechanism 6 after being blown by the plasma, clean air is pumped into the negative ion generator 9 through the air guide pipe 10. Through the action of the negative ion generator 9, the oxygen in the air can be ionized into negative ions, which are blown to the COF carrier body 3 by the control mechanism 6, thereby removing the static electricity on the surface of the COF carrier body 3 and avoiding the attachment of impurities caused by static electricity, thereby ensuring the cleanliness of the surface of the COF carrier body 3. The exhaust mechanism 4 includes a wind guide cover 401 arranged in the treatment box 2, and a fan 402 fixed on the wind guide cover 401, and the fan 402 is fixed with the treatment box 2. At the same time, the fan 402 is connected with the exhaust filter box 403 fixed on the upper end surface of the treatment box 2 through a duct. The exhaust filter box 403 is provided with an initial filter, a medium filter and a high-efficiency filter from left to right. During the treatment of the COF carrier body 3, the fan 402 and the wind guide cover 401 can exhaust the exhaust gas in the treatment box 2 to the exhaust filter box 403. Through the action of the initial filter, the medium filter and the high-efficiency filter in the exhaust filter box 403, the exhaust gas can be purified, thereby avoiding the pollution of the environment caused by direct exhaust of the exhaust gas. The adjusting mechanism 6 comprises a fixed frame 601 fixed on the support 501, and a wind guide box 602 is fixed at the lower end of the fixed frame 601, and the left wind guide box 602 is connected with the plasma generator 7 fixed on the fixed frame 601, and the right wind guide box 602 is connected with the negative ion generator 9 fixed on the fixed frame 601, and vertical plates 603 are slidably connected in the wind guide box 602, and horizontal plates 604 are fixed on the vertical plates 603 and are slidably connected with the fixed frame 601, and the horizontal plates 604 are connected with the clamping plates 506 through connecting rods 605; U-shaped frames 606 are symmetrically fixed on the horizontal plates 604, and convex shafts 607 are fixed at the ends of the U-shaped frames 606 and are slidably connected with inclined grooves 608 formed in baffles 609, and the baffles 609 are slidably connected with the fixed frame 601, and the baffles 609 are in contact with the horizontal plates 604 to form a sliding connection; During the operation of the device, when the clamping plates 506 move to limit the COF carrier tape body 3 with different widths, the clamping plates 506 move synchronously to drive the connecting rods 605 to move, so that the horizontal plates 604 and the vertical plates 603 move to adjust the distance between the two vertical plates 603, and since the air outlet below the wind guide box 602 is limited in length by the distance between the two vertical plates 603 and in width by the distance between the two baffles 609, the length of the air outlet can be adjusted by adjusting the distance between the two vertical plates 603, so that the length of the air outlet is automatically adapted to the width of the COF carrier tape body 3, so that the ion wind can fully cover the surface of the COF carrier tape body 3, and the processing effect of the COF carrier tape body 3 is ensured, and when the horizontal plates 604 move, the U-shaped frames 606 and the convex shafts 607 move synchronously, and the baffles 609 can move through the sliding action between the convex shafts 607 and the inclined grooves 608, so that the distance between the two baffles 609 is adjusted, and the width of the air outlet is adjusted, and according to the above principle, when the distance between the two vertical plates 603 decreases, that is, the length of the air outlet decreases, the distance between the two baffles 609 increases at this time, so that the width of the air outlet increases, and vice versa, when the distance between the two vertical plates 603 increases, that is, the length of the air outlet increases, the distance between the two baffles 609 decreases at this time, so that the width of the air outlet decreases, that is, the area of the air outlet remains unchanged, so that the wind speed remains stable, and the ion wind processing effect of the COF carrier tape body 3 is ensured.

[0020] It should be noted that in this text, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device.

[0021] The principles and implementation manners of the present application are described by using specific examples in the present application, and the above examples are only used to help understand the method of the present application and its core idea. The above description is only the preferred implementation manner of the present application, and it should be noted that, due to the limited expression of the text, there are objectively infinite specific structures, and for ordinary skilled persons in the technical field, some improvements, refinements or changes can be made without departing from the principles of the present application, and the above technical features can also be combined in an appropriate manner; the improvements, refinements, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, shall be regarded as the protection scope of the present application.

Claims

1. A printing preparation process capable of improving the performance of a COF carrier tape, characterized in that, The method comprises the following steps: Step 1: chemical pretreatment, remove the surface oil contamination of the COF carrier tape body (3) through the cleaning device to ensure the normal printing of the subsequent printing; Step 2: plasma cleaning, the pretreated COF carrier tape body (3) is moved to the treatment box (2) under the traction of the winding mechanism, and the surface PI layer of the carrier tape is cleaned by plasma using oxygen-nitrogen mixed gas to improve the surface performance and protect the copper-tin layer from oxidation. In the process of plasma cleaning, the plasma generator (7) works in a cycle of 0.5s pulse interval to avoid local temperature from being too high to cause the copper-tin layer on the surface of the COF carrier tape body (3) to be oxidized; Step 3: ion wind before printing, the COF carrier tape body (3) after plasma cleaning is blown off by negative ion wind to remove the static electricity on the surface of the COF carrier tape body (3) to avoid impurities from being attached due to static electricity; Step 4: screen printing, hot set ink is printed on the surface of the COF carrier tape body (3) through the printing device; Step 5: ion wind after printing, after printing, the COF carrier tape body (3) is blown off by 3-5m / s gradient wind speed to preferentially remove the low-boiling-point solvent in the ink and reduce the subsequent baking pressure; Step 6: IR pre-baking, the solvent molecule bond in the ink is decomposed by 1.4μm short wave IR to realize efficient volatilization of the solvent; Step 7: standing, the COF carrier tape body (3) after IR pre-baking is placed for 30s-60s to ensure the IR pre-baking effect of the COF carrier tape body (3); Step 8: IR and hot air baking, 2.4μm medium wave IR is used to trigger the crosslinking and curing of the ink resin, and hot air is used for assistance. During the process, 0.1mm copper foil heat sink is used to buffer thermal stress and inhibit tin layer diffusion to avoid ink penetration; Step 9: material collection, the carrier tape after curing and baking is wound after quality detection to complete the processing.

2. A printing process for improving the performance of a COF carrier tape according to claim 1, characterized in that: The plasma cleaning device in step 2 comprises a support frame (1), a treatment box (2) is fixedly installed on the support frame (1), an exhaust mechanism (4) is installed on the upper side of the treatment box (2) for tail gas treatment, an adjustable limiting mechanism (5) is installed in the treatment box (2) to adapt to the limiting of COF carrier tape bodies (3) with different widths, the COF carrier tape body (3) moves from left to right in the treatment box (2) driven by the winding mechanism, the limiting mechanism (5) is symmetrically installed with a control mechanism (6) on the left and right sides for controlling the range and wind speed of the ion wind, a plasma generator (7) is installed on the left control mechanism (6), the plasma generator (7) is connected with a spoiler mechanism (8) fixed on the treatment box (2) through a pipeline, the ion wind before printing in step 3 comprises the right control mechanism (6), a negative ion generator (9) is fixed on the right control mechanism (6), and the negative ion generator (9) is connected with an air duct (10).

3. A printing process for improving the performance of a COF carrier tape according to claim 2, wherein: The processing box (2) includes a control panel (201) fixed on the front end face of the processing box (2), and a switchable box door (202) is installed on the processing box (2), and a viewing window (203) made of transparent glass material is fixed on the box door (202), the processing box (2) is fixed symmetrically left and right with a guide roller (204), and the guide roller (204) is in contact with the COF carrier tape body (3).

4. A printing process for improving the performance of a COF carrier tape according to claim 2, wherein: The exhaust mechanism (4) includes a wind scoop (401) arranged in the processing box (2), and a fan (402) is fixed on the wind scoop (401), and the fan (402) and the processing box (2) are fixedly connected, and the fan (402) is connected with a waste gas filter box (403) fixed on the upper end face of the processing box (2) through a duct, and the waste gas filter box (403) is internally provided with an initial filter, a medium filter and a high-efficiency filter from left to right.

5. A printing process for improving the performance of a COF carrier tape according to claim 2, wherein: The limiting mechanism (5) includes a support (501) fixed in the processing box (2), and a supporting plate (502) is fixed symmetrically left and right on the support (501), and the supporting plate (502) is in sliding connection with the COF carrier tape body (3).

6. A printing process for improving the performance of a COF carrier tape according to claim 5, wherein: The support (501) is connected with a two-way threaded rod (503) through a bearing, the two-way threaded rod (503) and the movable plate (504) are in threaded connection, the movable plate (504) is fixed with a sliding plate (505) symmetrically left and right, the sliding plate (505) and the support (501) are in sliding connection, the sliding plate (505) is fixed with a clamping plate (506), and the clamping plate (506) is in contact with the COF carrier tape body (3) to realize the limiting effect.

7. A printing process for improving the performance of a COF carrier tape according to claim 6, wherein: The control mechanism (6) includes a fixed frame (601) fixed on the support (501), a wind guide box (602) is fixed on the lower end of the fixed frame (601), the left wind guide box (602) is connected with the plasma generator (7) fixed on the fixed frame (601), the right wind guide box (602) is connected with the negative ion generator (9) fixed on the fixed frame (601), the wind guide box (602) is internally provided with a vertical plate (603) slidingly connected front and back, the vertical plate (603) is fixed with a horizontal plate (604), the horizontal plate (604) and the fixed frame (601) are in sliding connection, and the horizontal plate (604) is connected with the clamping plate (506) through a connecting rod (605).

8. A printing process for improving the performance of a COF carrier tape according to claim 7, wherein: The horizontal plate (604) is fixed with a U-shaped frame (606) symmetrically left and right, the U-shaped frame (606) is fixed with a convex shaft (607) at the end, the convex shaft (607) and the inclined groove (608) formed in the baffle (609) are in sliding connection, the baffle (609) and the fixed frame (601) are in sliding connection, and the baffle (609) and the horizontal plate (604) are in sliding connection.

9. A printing process for improving the performance of a COF carrier tape according to claim 2, wherein: The spoiler mechanism (8) comprises a mixing box (801) fixed in the processing box (2), and the mixing box (801) is connected with the oxygen pipe (802) and the nitrogen pipe (803) through pipes, and the proportion of oxygen delivered by the oxygen pipe (802) to nitrogen delivered by the nitrogen pipe (803) is 4:1, and the mixing box (801) is connected with the plasma generator (7) through a pipe.

10. The printing process for improving the performance of a COF carrier tape according to claim 9, wherein: A fixed plate (804) is fixed in the mixing box (801), a rotating shaft (805) is connected with the fixed plate (804) through a bearing, a fan blade (806) is fixed on the left side of the rotating shaft (805), the fan blade (806) is arranged on the inner side of a wind collecting cover (807), the wind collecting cover (807) is fixed in the mixing box (801), and turbulence plates (808) are uniformly fixed on the rotating shaft (805).

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