TWI599628B - A method and device for masking paint and removing masking paint - Google Patents

Description

Method and device for masking paint and removing masking paint

The present invention relates to a masking coating and a method and apparatus for removing a masking coating, and more particularly to a masking coating implemented as a composite material and a method of removing the masking coating material intact.

With the development of technology research and development, metal parts or electronic parts are gradually becoming finer and smaller, so that the manufacturing process of the components to be processed of the metal parts or electronic parts tends to be fine and complicated. Among them, in terms of surface treatment work, since the structure of the component to be processed is miniaturized, the original surface treatment work such as plating and etching is becoming more and more difficult, and the fineness after the production is increasingly pursued.

According to the surface treatment operations currently practiced in the industry, electroplating, etching, and the like are performed to form a microstructure or an image structure on the workpiece to be processed through the surface treatment. However, it is generally required to perform the surface treatment operation. A masking action is performed on the processing component to distinguish between a masked area and an unmasked area, so that the surface treatment operation only performs work on the unmasked area. However, in the general industry, the shielding operation is performed by masking liquid, masking tape, paraffin wax or thermoplastic ink. In the case of shielding liquid, the current shielding liquid is normally in a liquid state, and a curing process is required to make the shielding liquid The liquid is turned into a solid state, which increases the manufacturing process for surface treatment operations. In addition, if the material properties of the shielding liquid itself are limited to the surface treatment operations that can be performed, further, when the shielding liquid is organic and applied to electroplating, the characteristics of the shielding liquid itself and the electroplating are The chemical liquid used produces a chemical reaction that does not function properly as a shadow, and the masking liquid is limited by its own tension and is difficult to apply to smaller components to be processed. Furthermore, if the operator performs the masking operation with the masking tape, at the beginning of the masking operation, the masking tape is first cut to an appropriate size, and the masking tape is adhered to the intended masking area of the component to be processed. However, since the masking tape is difficult to perform cutting of a small area, the masking tape is generally difficult to apply to a smaller component to be processed. Moreover, there are also manufacturers who use paraffin to cover the work, as disclosed in Japanese Patent Publication No. 2014-28357. However, the material properties of paraffin itself are quite sensitive to temperature changes, and a slight temperature change will cause the paraffin to shrink. In the process of masking the paraffin, it is necessary to warm the coating before it is coated. After cooling, the masking is formed. Thus, if the paraffin is used for the masking of the fine area, the paraffin is formed at the moment of coating and cooling to form a shadow. The area will change and it will not be masked, and the masking paint made of paraffin alone cannot be used in electroplating. In addition, in the process of masking by paraffin alone, the paraffin is also clogged in the nozzle of the coating device by temperature changes, and the coating device cannot stably discharge paraffin for coating. Moreover, today's manufacturers have simply used thermoplastic inks for this masking operation, but the price of thermoplastic inks is generally too high, which has led to an increase in manufacturers' development costs, which is not conducive to manufacturers' sales of products, and is implemented by thermoplastic inks. The masking coating cannot be applied to an electroplating operation at an operating temperature of 70 ° C or higher, and a problem of incomplete dissolving of the dissolution occurs.

Furthermore, after the surface treatment operation, a process for removing the masking paint is generally required, and the general practitioner often performs the method of ultrasonic peeling, cooling peeling or heat stripping. In the case of ultrasonic peeling, when the ultrasonic peeling is performed, the surface-processed component to be processed is placed in a reaction tank of an ultrasonic device, so that the ultrasonic device starts the reaction tank. The water inside is subjected to vibration, so that the water stored in the reaction tank forms a shock wave like an ultrasonic wave, and the shielding paint on the component to be processed is removed by the shock wave, but the structure to be processed is not flat, so that the workpiece is to be processed The seismic waves received by each part of the components are not the same, and the problem of incomplete peeling of the masking paint is likely to occur. Furthermore, ultrasonic stripping requires a longer reaction tank, which is not advantageous for use in a short-process production line. For example, the working time of ultrasonic stripping is 5 minutes, and the conveying speed of the raw line is every minute. Calculated from 6 to 8 meters, the workstation with ultrasonic peeling requires a reaction tank of 30 to 40 meters. In addition, the cooling and peeling will be described. Generally, the cooling and peeling is to provide a cooling liquid to rapidly cool the surface-treated component to be processed, so that the shielding paint originally attached to the component to be processed is cooled and contracted. The adhesion is reduced and the masking coating is peeled off from the components to be processed. However, in the actual operation process, it is difficult to make the masking coating on the component to be processed instantaneously fall below the freezing point, and the coolant cannot be implemented in pure water because the pure water is cooled low. At freezing point, freezing occurs. To prevent the freezing of pure water at the freezing point, it is necessary to mix other antifreeze to make a mixture with a freezing point lower than the freezing point. In this way, the process of using the cooling stripping needs to add an ice-preserving process, and the development cost of the mixed liquid will be passed on to the product, which is not conducive to market competition. Moreover, after the cooling and peeling technique is performed, the masking paint cannot be completely separated from the component to be processed, and a residual object appears. For this reason, the manufacturer forcibly removes the residual by external force such as compressed gas. The masking paint is separated from the component to be processed, but this easily causes damage to the fine structure on the component to be processed, and the yield is lowered. Furthermore, the method of heating and peeling is continued. The heat stripping is performed by heating the heat shield or the heat gun to heat the masking paint on the component to be processed, so that the masking paint is solidified into a liquid state, and finally The masking paint that is melted into a liquid state is removed from the component to be processed by a wiping cloth or a wiping paper. However, in the above manner, a large amount of wiping cloth or wiping paper is used, and during the wiping process, it is still limited by the wiping cloth or the wiping paper itself, and the small component of the workpiece to be processed cannot be wiped. In addition to this, another embodiment is to use a water vapor to warm the masking coating to convert the masking coating from a solid to a liquid. However, in actual operation, the temperature of the water vapor cannot be surely taken. If the masking paint is implemented as a water-insoluble oil, the temperature of the water vapor cannot be significantly higher than the transition temperature of the masking paint, that is, It may be that the masking paint will only be converted from a solid state to a paste, and the masking paint that becomes this aspect will be more difficult to remove it on the component to be processed, and further, if the operator takes advantage of the strong use The wind pressure supplies the water vapor to the component to be processed, and although the separation effect of the masking paint and the component to be processed is enhanced, during the implementation, the surface-treated fine structure of the component to be processed may be damaged.

The main object of the present invention is to solve the problem of high price or poor shielding effect of masking coatings used in surface treatment operations today.

Another object of the present invention is to solve the problem that the conventional method of removing the masking coating cannot completely peel off the masking coating from the component to be processed.

In order to achieve the above object, the present invention provides a masking coating for attaching to a surface of a component to be processed, so that the surface forms a masking area and an unmasked area, so that the component to be processed can be surface treated. The operation is performed on the unmasked area, and the masking paint is composed of a thermoplastic ink and a paraffin wax. The thermoplastic ink has an average particle diameter of 5 to 700 nm and a maximum particle diameter of 1000 nm or less. The paraffin wax comprises from 1% to 80% by weight of the total weight of the masking coating. The masking coating is solid at room temperature and is insoluble in an organic solvent, and the masking coating has a transition temperature, the transition temperature. Between 70 and 90 ° C, and when the masking paint is heated to the transition temperature, the solid state transitions to a liquid state.

In an embodiment of the invention, the masking coating is a film at normal temperature.

In an embodiment of the invention, the temperature of the masking paint is lower than the transition temperature, that is, the transition state returns to the solid state.

In an embodiment of the invention, the transition temperature is 80 °C.

In an embodiment of the invention, the thermoplastic ink is composed of at least a resin, a polymer, and a pigment.

In an embodiment of the invention, the thermoplastic ink accounts for 20% of the total weight of the masking coating, and the paraffin wax accounts for 80% of the total weight of the masking coating.

In an embodiment of the invention, the thermoplastic ink accounts for 30% of the total weight of the masking coating, and the paraffin wax accounts for 70% of the total weight of the masking coating.

In addition to the above-mentioned masking paint, the present invention also provides a method for removing a masking paint, the method comprising the following steps: Step 1: providing the component to be processed, and the surface of the component to be processed is coated with the masking paint to form the a masking area and the unmasked area; in step 2, providing a grease removing agent, heating the grease removing agent, and heating the grease removing agent from a normal temperature to at least 70 ° C and higher than the shifting state of the masking paint The third step is to provide the heated grease-based remover to the component to be processed in a natural trickle pattern, so that the masking paint is removed from the surface of the component to be processed by the grease-based remover.

In an embodiment of the invention, the third step further comprises a sub-step of adjusting the placement state of the component to be processed parallel to the drip trajectory of the grease-based remover.

In an embodiment of the present invention, after the step 3, a step 4 is further included: collecting the grease-based remover after the trickle flow and the masking paint after the transition, and cooling the grease-based remover and the masking paint The grease-based remover is separated from the masking coating.

In an embodiment of the invention, the grease removal agent has a flash point of 40 ° C or higher, an auto-ignition temperature of 220 ° C, a viscosity of 2.42 mPa·s at 20 ° C, and 0.82 mPa·s at 80 ° C.

In an embodiment of the invention, the grease removal agent is heated to 120 ° C in the second step.

In addition, the present invention also provides an apparatus for removing a masking coating, the apparatus comprising a support portion, a warming portion, and a supply portion. The supporting portion is formed with a working area for providing a component to be processed coated with the shielding material, wherein the heating portion stores the grease removing agent and warms the grease removing agent, and the feeding portion is connected The warming portion is disposed in the working area, and the grease removing agent is obtained from the warming portion, and the grease removing agent is dripped onto the workpiece to be processed in the natural trickle type.

In an embodiment of the invention, the support portion includes a transport module and a plurality of frames that are driven by the transport module and respectively support the components to be processed.

In an embodiment of the invention, the warming portion includes a storage module for storing the grease removal agent, and a heating module for storing the module to heat the storage module.

In an embodiment of the present invention, the storage module of the heating portion is disposed under the supply portion to allow the applied grease removing agent and the shielding paint to be stored in the storage module.

In an embodiment of the invention, the supply portion includes an infusion module that connects the warming portion to obtain the grease removing agent, and a liquid supply module that connects the infusion module to the working area.

In an embodiment of the invention, the infusion module comprises a pressure pump and an infusion tube connected to the pressure pump.

Through the above-mentioned technical solution of the present invention, the following advantages are compared with the conventional technology:

1. The masking paint of the present invention is composed of the thermoplastic ink and paraffin wax, and the paraffin wax further accounts for 1% to 80% of the total weight percentage of the masking paint, whereby the masking paint of the present invention is formed into a single thermoplasticity. The shading effect of the ink is reduced, and at the same time, the development cost of the masking coating is reduced, and the problem of high price or poor shielding effect of the masking coating is solved.

2. The present invention uses a grease-based remover as a main medium for removing the masking coating, and causes the grease-based remover to be appropriately heated, and then dripped onto the component to be processed in a natural trickle pattern, so that the masking coating is subjected to the coating. The high temperature action of the grease-based remover produces a transitional state that allows the masking coating to completely detach from the component to be processed.

The detailed description and technical contents of the present invention will now be described as follows:

The present invention provides a masking coating which is mainly used for a surface treatment operation, and the so-called surface treatment operation refers to an electroplating or an etching operation. The masking paint is composed of a thermoplastic ink and a paraffin wax, wherein the thermoplastic ink has an average particle diameter of 5 to 700 nm, a maximum particle diameter of 1000 nm or less, and the paraffin wax accounts for the masking paint. The present invention is capable of ensuring the quality of the surface treatment operation during the surface treatment operation, and the masking paint of the present invention is at room temperature. a solid state and insoluble in an organic solvent, and the masking paint has a transition temperature, and the transition temperature is between 70 and 90 ° C to generate when the masking paint is heated or cooled to the transition temperature. In the transition state, for example, it is assumed that the masking paint is at a normal temperature and is solid when not applied, and when the masking paint is heated to exceed the transition temperature, it is converted from a solid state to a liquid state, and if the masking paint is at a When the temperature is lowered to a temperature lower than the transition temperature, the masking paint is converted from a liquid state to a solid state, whereby the present invention is utilized in the surface treatment operation. Furthermore, the thermoplastic ink of the present invention may be selected from the thermoplastic inks sold by Sable Black, or one selected from the group consisting of thermoplastic resins or thermoplastic polymers. Moreover, in an embodiment, the thermoplastic ink may be a ratio of a resin, a polymer, and a pigment, wherein the resin may be a compound such as a urethane or a diisocyanate. The polymer may be a compound such as a polyvinyl chloride or a polyurethane urea crosslinked particle, and the pigment may be an azo dye, a metal dye or a naphthol dye. On the other hand, the paraffin wax of the present invention is an alkane having a carbon number of 20 or more (having a formula of CnH2n+2), and has a melting point of about 88 ° C and an oil content of 0.2% / mass. In one embodiment, the paraffin wax Paraffin wax sold by the Japanese wax company must be used. More specifically, in one embodiment of the invention, the masking coating is a mixture of 20% thermoplastic ink and 80% paraffin wax, and the masking coating is applied to an object, as shown in FIG. The masking coating in this embodiment can surely shield part of the structure of the article, but in order to further enhance the coating effect of the masking coating, in another embodiment, the masking coating is 30% The thermoplastic ink is mixed with 70% paraffin. The coating effect of this embodiment is shown in Fig. 2. After comparing Fig. 1 with Fig. 2, it can be clearly seen that the masking paint of Fig. 2 produces better image resolution. , and can be more specifically applied to a small, fine surface treatment operation, according to which the masking paint of the present invention adjusts the proportion of the thermoplastic ink and the paraffin wax in the masking paint according to the implementation requirement, so as to meet the corresponding The need for surface treatment operations, such as the image resolution formed by the masking coating, or the transition temperature of the masking coating, and the like. In the embodiment, the masking coating of the present invention has a transition temperature of 80 ° C.

According to the above description, after the masking coating of the present invention is completed, the masking material is presented in a solid state at room temperature, and in the form of a film, the masking coating is insoluble in this state. Among the organic solvents, it is possible to avoid the action of the organic solvent (such as toluene, acetone, etc.) used in the surface treatment work during the surface treatment of the masking paint. Referring to FIG. 3, it can be seen from the foregoing that the masking paint of the present invention is applied to the surface treatment operation, and is coated on a surface 11 of a component 1 to be processed, so as to be formed on the surface 11 in a shielding region 111. And an unmasked area 112. More specifically, the component 1 to be processed in the present invention may be a mechanical component or a component constituting an electronic device, and the component 1 to be processed may be made of a metal, a resin or a plasticized material. Furthermore, at the beginning of the surface treatment operation, the shielding area 111 and the unmasked area 112 on the surface 11 need to be defined so that the surface treatment operation can only act on the unmasked area 112. Then, the masking coating is correspondingly applied to the shielding area 111 by a coating device, and during the coating process, the coating device heats the masking coating to cause the masking coating to heat up and exceed the The transition temperature, entering the liquid state, and then applying the masking coating to the component 1 to be processed according to the position of the shielding region 111, and after the coating is completed, placing the component 1 or the pair to be processed The component to be processed 1 is cooled, so that the temperature of the masking paint is lower than the transition temperature and converted from the liquid state to the solid state, so that the masking paint forms the film on the component 1 to be processed, as indicated in FIG. 2. In this way, the component 1 to be processed can perform the subsequent surface treatment operation, so that the unmasked region 112 forms a plated image or a microstructure.

Referring to FIG. 4 and FIG. 5, after the surface processing operation is performed, the workpiece 1 to be processed is subjected to a removal masking operation to remove the masking paint from the workpiece 1 to be processed. Accordingly, the present invention also provides a method of removing a masking coating which is carried out in conjunction with a device 3 for removing the masking coating during the practice. However, in order to specifically describe the method for removing the masking paint of the present invention, the apparatus 3 for removing the masking paint is first described. In an embodiment, the apparatus 3 for removing the masking paint comprises a supporting portion 31 and a heating portion 32. And a supply portion 33, more specifically, the support portion 31 can be formed by a plurality of support members (such as iron pipe, aluminum extrusion), as shown in FIG. 4, in addition, the support portion 31 is also It can be implemented by a conveyor belt 31 which further forms a work area 311, and the present invention, as referred to herein, refers to a space for providing the workpiece 1 to be processed for removal of the masking paint. In addition, the heating unit 32 can be formed by a storage module 321 and a heating module 322. The storage module 321 provides a solvent for removing the masking material, and the storage module is stored therein. 321 is a liquid storage tank or a liquid storage tank, and the heating module 322 is disposed corresponding to the storage module 321 to heat the storage module 321 after being activated, and further, the heating The module 322 partially covers or completely covers the storage module 321 to stably heat the storage module 321 . Further, the supply portion 33 of the present invention may be an infusion tube or other infusion operation. The storage unit 33 is connected to the heating unit 32 at one end, and the working area 311 of the supporting unit 31 is disposed at the other end. Further, the storage unit 33 of the present invention is connected to the storage module of the heating unit 32. 321 is taken to obtain the solvent, and the solvent is sent to the working area 311 of the support portion 31, so that the solvent removes the masking paint from the workpiece 1 to be processed placed in the working area 311.

In view of the above, the present invention specifically removes the masking coating from the component to be processed, and further uses a grease removing agent as a solvent for removing the masking coating, and more specifically, the grease referred to in the present invention. The type of remover is selected from oils having low viscosity and high volatility so that the grease remover can be easily washed away from the component 1 to be processed. In addition, in order to consider the public safety during the implementation process, the grease-based remover of the present invention needs to have a lower flash point and a higher auto-ignition temperature. In one embodiment, the oil-based remover has an oil characteristic of a flash point of 40° C. or higher, an auto-ignition temperature of 200° C., a viscosity of 2.42 mPa·s at 20° C., and a 0.82 mPa·s at 80° C. Further, the grease-based remover of the present invention is obtained as a lamp oil.

As described above, the method for removing the masking paint of the present invention comprises the following steps:

Step 1 (41): providing the component 1 to be processed, and the surface 11 of the component 1 to be processed is coated with the masking paint to form the shielding area 111 and the unmasked area 112;

Step 2 (42): providing the grease-based remover, heating the grease-based remover, and heating the grease-based remover from a normal temperature to at least 70 ° C and higher than the transition temperature of the masking paint;

Step 3 (43): providing the component 1 to be processed with the heated grease removing agent in a natural trickle pattern, and removing the masking coating from the component to be processed by the action of the grease removing agent The surface 11 of 1.

In order to clearly show the implementation of the oil-and-fat remover of the present invention in the method, the present invention discloses the grease-removing agent as 5. In the initial implementation of the present invention, the grease removing agent 5 is stored in the storage module 321 of the heating portion 32 at a normal temperature, and the surface treatment operation is completed during the process of removing the masking paint. The workpiece 1 to be processed is placed in the work area 311 (ie, step 41), and thereafter, the warming portion 32 of the device 3 for removing the paint removes the grease remover 5 to make the grease The type-removing agent 5 is heated from normal temperature to at least 70 ° C and higher than the transition temperature of the masking coating (ie, step 2 42), in other words, the grease-based removing agent 5 of the present invention needs to be heated to at least higher than the masking coating. In one embodiment, the method of the present invention raises the grease removal agent 5 to 120 degrees, and in order to prevent the grease removal agent 5 from being in contact with the air during the dripping process, heat exchange occurs. The temperature drop is not advantageous for implementation. Therefore, the present invention further causes the temperature of the grease-based remover 5 to be output from the supply portion 33 to be greater than the transition temperature of the masking paint. Further, the supply unit 33 of the device 3 for removing the coating material obtains the heated grease removing agent 5 from the storage module 321 of the heating unit 32, and supplies the grease removing agent 5 thereto. The working area 311 of the supporting portion 31, and causing the grease removing agent 5 to drip the component 1 to be processed in the natural trickle pattern, so that the film 2 formed by the masking paint is subjected to the grease removal The high temperature of the agent 5 is raised to the transition temperature, and is converted into a liquid from the solid state, and is removed from the component 1 to be processed as the oil-based remover 5 flows. Thereafter, the component 1 to be processed is subjected to a simple cleaning, that is, the work is completed. Further, the natural trickle type referred to in the present invention means that the oil-and-fat remover 5 is dropped from the supply portion 33 toward the support portion 31, and the form of dripping is as if the raindrops fall. Further, when the position of the warming portion 32 is significantly higher than the support portion 31, the grease removing agent 5 conveyed in the feeding portion 33 is subjected to a drop between the warming portion 32 and the supporting portion 31. The hydraulic pressure is formed so that the oil-and-fat remover 5 in the supply unit 33 is dripped toward the support portion 31 by the hydraulic action.

With reference to FIG. 6 and FIG. 7 , in the embodiment of the present invention, the third step (43) includes adjusting the placement state of the component 1 to be processed and the grease removing agent. The drip trajectory of 5 is a parallel sub-step (431). More specifically, in order to drip the grease-based remover 5 to the component 1 to be processed, the grease-removing agent 5 is added and the In the embodiment, the contact state of the component 1 to be processed is further adjusted, so that the flow path of the component 1 to be processed and the grease remover 5 are parallel. As shown in FIG. 6, the drip trajectory is referred to as 51 as indicated in FIG. 6, so that the grease removing agent 5 can be caused to drip the component 1 to be processed along the surface 11 after dripping the component 1 to be processed. Flowing, which can generate more contact area, greatly increases the chance of contact of the film 2 with the grease-removing agent 5, so that the masking paint can be more completely removed from the component 1 to be processed. In addition, the above-mentioned adjustment of the placement state can also reduce the splash generated by the grease removing agent 5 during the dripping process, and the grease removing agent 5 and the removed masking paint can flow down. It does not need to be cleaned up with other tools. Furthermore, the present invention can also cause the component 1 to be processed to be tilted into the working area 311 to achieve a similar effect.

According to the invention, after the masking paint is removed, the masking paint and the grease removing agent 5 can be recovered for the next operation. Referring to FIG. 7 and FIG. 8 , in the embodiment, the storage module 321 of the heating portion 32 of the device for removing the coating material is disposed below the supply portion 33, and more specifically, the supply portion 33 includes an infusion module 331 connected to the warming portion 32 to obtain the grease removing agent 5, and a liquid supply module 332 connected to the infusion module 331 and disposed in the working area 311. Further, the infusion module 331 includes a pressurizing pump 333 and an infusion tube 334 connected to the pressurizing pump 333. In this embodiment, the liquid supply module 332 of the supply portion 33 is disposed on the working area 311 of the support portion 31 to supply the grease removal agent 5 to the working area 311. 333, a pressure is applied to the oil-and-fat remover 5 in the infusion tube 334, and the oil-based remover 5 is pumped from the warming portion 32 to the liquid supply module 332, and dripped from above the support portion 31. The grease-based remover 5. On the other hand, the storage module 321 of the warming portion 32 has an opening facing the working area 311 in the embodiment, and is disposed above the supporting portion 31 corresponding to the working area 311, so that The grease removing agent 5 and the masking paint after the action can be returned to the storage module 321 . According to the present invention, the method further includes a step four (44) of collecting the drip-flowing grease removing agent 5 and the masking paint after the transition, the grease removing agent 5 and the masking coating is cooled to separate the grease removing agent 5 from the masking coating. Further, after the method of the present invention is performed from the first step (41) to the third step (43), the grease removing agent 5 is caused to flow while the workpiece 1 to be processed is placed. The masking paint is removed and flows toward the storage module 321 placed under the working area 311, and is collected in the storage module 321 , and the storage module 321 is completed during the entire removal operation, and the storage module 321 is stopped. The operation of the heating module 322 causes the storage module 321 to cool down, and the masking paint is again turned to the state of the film 2. At this time, since the grease removing agent 5 and the film 2 have different densities, A layering phenomenon occurs in the storage module 321, so that the masking paint and the grease removing agent 5 that are transferred to the film 2 can be classified and recovered. Furthermore, the storage module 321 of the present invention further has an isolation cavity (not shown) for removing the masking paint of the present invention, and the shielding paint and the grease removing agent 5 can be obtained after the action. Temporarily stored in the isolation chamber to avoid the problem that the supply unit 33 is erroneously pumped and an abnormal operation occurs. In addition, in an embodiment, the support portion 31 further includes a transport module 312, and a plurality of racks 313 that are driven by the transport module 312 and respectively support the components 1 to be processed.

In summary, the present invention provides a masking coating and a method and apparatus for removing a masking coating, wherein the masking coating is used for a surface treatment operation, which is composed of a thermoplastic ink and a paraffin wax. The thermoplastic ink has an average particle diameter of 5 to 700 nm and a maximum particle diameter of 1000 nm or less, and the paraffin wax accounts for 1% to 80% of the total weight of the masking paint, so that the masking paint is at room temperature. A solid state with a transition temperature between 70 and 90 °C. In addition, the present invention also provides a method and a device for removing the masking coating, which is dripped onto a workpiece to be processed coated with the masking paint by a heated drip-type agent through a heated drip-type agent. The masking coating is completely removed from the component to be processed by the action of the grease removing agent. Therefore, in order to solve the problem that the cost of the conventional masking coating is high or the shielding effect is poor, and the conventional method of removing the masking coating cannot completely peel off the masking coating from the component to be processed.

The present invention has been described in detail above, but the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Variations and modifications are still within the scope of the patents of the present invention.

1‧‧‧Processing components

11‧‧‧ surface

111‧‧‧ shaded area

112‧‧‧Uncovered area

2‧‧ ‧ film

3‧‧‧Devices for removing masking paint

31‧‧‧Support

311‧‧‧Working area

312‧‧‧Transport module

313‧‧‧ ‧ frame

32‧‧‧Heating Department

321‧‧‧ storage module

322‧‧‧ Heating Module

33‧‧‧Supply Department

331‧‧‧Infusion module

332‧‧‧liquid supply module

333‧‧‧Pressure pump

334‧‧‧Infusion tube

41, 42, 43, 431, 44 ‧ ‧ steps

5‧‧‧ Grease remover

51‧‧‧ drip trajectory

FIG. 1 is a schematic view showing an embodiment of a masking coating of the present invention. Fig. 2 is a schematic view showing the implementation of another embodiment of the masking paint of the present invention. FIG. 3 is a schematic structural view of an embodiment of a component to be processed according to the present invention. 4 is a schematic view (1) of an embodiment of the present invention. FIG. 5 is a flow chart of an embodiment of a method for removing a masking coating of the present invention. FIG. 6 is a schematic diagram (2) of an embodiment of the present invention. Figure 7 is a flow chart of another embodiment of a method of removing a masking coating of the present invention. FIG. 8 is a schematic structural view of another embodiment of an apparatus for removing a masking paint according to the present invention.

1‧‧‧Processing components

11‧‧‧ surface

2‧‧ ‧ film

31‧‧‧Support

311‧‧‧Working area

32‧‧‧Heating Department

321‧‧‧ storage module

322‧‧‧ Heating Module

33‧‧‧Supply Department

5‧‧‧ Grease remover

Claims (16)

A masking coating for attaching to a surface of a component to be processed, such that the surface forms a masking area and an unmasked area, so that the component to be processed can perform a work on the unmasked area by a surface treatment operation, the masking The coating material is characterized in that the masking coating is composed of a thermoplastic ink and a paraffin wax, and the thermoplastic plastic ink has an average particle diameter of 5 to 700 nm and a maximum particle diameter of 1000 nm or less, and the paraffin wax is 1% to 80% of the total weight percentage of the masking coating, the masking coating is solid at room temperature and insoluble in an organic solvent, and the masking coating has a transition temperature of 70~ Between 90 ° C, and when the masking paint is heated to the transition temperature, the solid state is converted into a liquid state; wherein, when the thermoplastic ink accounts for 20% of the total weight percentage of the masking paint, the paraffin wax accounts for the shielding The overall weight percentage of the coating is 80; and when the thermoplastic ink accounts for 30% of the total weight of the masking coating, the paraffin wax accounts for 70% of the total weight of the masking coating. The masking paint according to claim 1, wherein the masking paint is a film at normal temperature. The masking paint according to claim 1, wherein the masking paint temperature is lower than the transition temperature, that is, the transition state returns to the solid state. The masking paint according to claim 1, 2 or 3, wherein the transition temperature is 80 °C. A method for removing a masking coating, the method comprising the following steps: Step 1: providing the component to be processed, and the surface of the component to be processed is coated with the masking coating to form the shielding area and the unmasked area; Providing a grease removing agent, heating the grease removing agent, and heating the grease removing agent from a normal temperature to at least 70 ° C and higher than the transition temperature of the masking paint; Step 3, the heated grease-based remover is supplied to the component to be processed in a natural trickle pattern, and the masking paint is removed from the surface of the component to be processed by the grease-based remover. The method of removing the masking paint according to claim 5, wherein the step 3 further comprises a sub-step of adjusting a state in which the component to be processed is placed in parallel with a drip trajectory of the grease-based remover. The method for removing the masking paint according to claim 5 or 6, wherein after the step 3, the method further comprises a step 4: collecting the grease-based remover after the trickle flow and the masking paint after the transition, the grease The removing agent and the masking coating are cooled to separate the grease removing agent from the masking coating. The method for removing a masking coating according to claim 5 or 6, wherein the grease removing agent has a flash point of 40 ° C or higher, an auto-ignition temperature of 220 ° C, a viscosity of 2.42 mPa ‧ at 20 ° C, and a temperature of 80 ° C at 80 ° C 0.82mPa‧s. The method for removing a masking coating according to claim 8, wherein the grease-based removing agent is heated to 120 ° C in the second step. A method of removing a masking coating according to claim 5 or 6, wherein in the second step, the grease removing agent is heated to 120 °C. A device for removing a masking coating for performing the method for removing a masking paint according to any one of claims 8 to 13, the device comprising: a supporting portion formed with a component to be processed coated with the masking material disposed therein a working area; a warming portion storing the grease removing agent and heating the grease removing agent; a supply unit that is connected to the heating portion and disposed in the working area to obtain the grease removing agent from the heating portion, and dripping the grease removing agent onto the component to be processed in the natural trickle pattern on. The device for removing a masking coating according to claim 11, wherein the supporting portion comprises a conveying module and a plurality of frames supported by the conveying module and respectively supporting the components to be processed. The device for removing a masking coating according to claim 11 or 12, wherein the warming portion comprises a storage module for storing the grease removing agent, and a pair of heating modules for storing the module. Temperature module. The apparatus for removing the masking paint according to claim 13, wherein the storage module of the warming portion is correspondingly disposed under the supply portion, so that the applied grease removing agent and the masking paint are returned to the In the storage module. The device for removing the masking paint according to claim 11, wherein the supply portion comprises an infusion module connected to the warming portion to obtain the grease removing agent, and a connecting unit for connecting the infusion module to the working area. Liquid supply module. The device for removing masking paint according to claim 15, wherein the infusion module comprises a pressurizing pump and an infusion tube connected to the pressurizing pump.