JP2014083607A - Sand blast method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sand blast method capable of improving a yield more than usual.SOLUTION: A sand blast method processes a surface 11a by spraying an abrasive on the surface 11a of an object 11, and comprises: a register forming step of forming a register 12 by a register liquid on the surface 11a by inkjet-printing the register liquid on the surface 11a; and a surface polishing step of polishing a part unformed with the register 12 among the surface 11a by spraying an abrasive on the surface 11a side of the object 11 formed with the register 12 by the register forming step, and the surface polishing step is a step executed in a state where the register 12 formed on the surface 11a by the register forming step has a tack.

Description

  The present invention relates to a sandblasting method for processing a surface of an object by spraying an abrasive on the surface of the object.

  Conventionally, as a sandblasting method for processing the surface of an object by spraying an abrasive on the surface of the object, resist formation is performed by forming a resist solution on the surface of the object by inkjet printing a resist liquid on the surface of the object And a surface polishing step of polishing a portion of the surface of the object on which the resist is not formed by spraying an abrasive on the surface side of the object on which the resist is formed by the resist forming step. It is known (see Patent Document 1).

JP 2008-265224 A

  However, in the conventional sandblasting method, the resist is unexpectedly damaged by the collision with the abrasive in the surface polishing step, so that the part of the surface of the object that is not originally planned to be polished is polished. There is a case. That is, the conventional sandblasting method has a problem of poor yield.

  Then, an object of this invention is to provide the sandblasting method which can improve a yield conventionally.

  The sand blasting method of the present invention is a sand blasting method in which the surface is processed by spraying an abrasive on the surface of an object, and a resist solution is ink-jet printed on the surface to form a resist by the resist solution on the surface. A resist forming step; and a surface polishing step for polishing a portion of the surface where the resist is not formed by spraying the abrasive on the surface side of the object on which the resist is formed by the resist forming step; The surface polishing step is performed in a state where the resist formed on the surface by the resist forming step has a tack.

  With this configuration, in the sandblasting method of the present invention, since the resist has a tack in the surface polishing step, a layer of the abrasive is formed on the surface of the resist by the collision between the resist and the abrasive. Direct collision of the resist is prevented, and as a result, resist breakage is prevented. Therefore, the sandblasting method of the present invention can prevent the portion of the surface of the object that is not originally polished from being polished by the resist, and can improve the yield compared to the conventional method.

  In the sandblasting method of the present invention, the surface polishing step is performed in a state where the strength of the resist formed on the surface by the resist forming step is an elongation of 120% to 400%. Also good.

  With this configuration, the sand blasting method of the present invention absorbs the impact of the collision by the flexibility of the resist even if the abrasive collides with this layer on the resist having the abrasive layer formed on the surface. It is possible to more effectively prevent resist damage in the step.

  In the sandblasting method of the present invention, the surface polishing step may be performed in a state where the strength of the resist formed on the surface by the resist forming step is a pencil hardness of B or more and 2H or less. good.

  With this configuration, the sand blasting method of the present invention absorbs the impact of the collision by the flexibility of the resist even if the abrasive collides with this layer on the resist having the abrasive layer formed on the surface. It is possible to more effectively prevent resist damage in the step.

  In the sandblasting method of the present invention, the resist forming step may be a step of performing UV inkjet printing on the ultraviolet curable resist solution.

  With this configuration, the sand blasting method of the present invention has a faster curing speed of the resist solution compared to the configuration in which the resist solution is an organic solvent type liquid because the resist solution is an ultraviolet curable liquid. The overall speed of a series of processing can be improved.

  The sandblasting method of the present invention can improve the yield as compared with the conventional method.

It is side surface sectional drawing of the workpiece manufactured by the sandblasting method which concerns on one embodiment of this invention. It is a perspective view of the inkjet printer used for manufacture of the processed goods shown in FIG. (A) is side surface sectional drawing of the target object before processing with the sandblasting method which concerns on one embodiment of this invention. (B) is side surface sectional drawing of the target object shown to Fig.3 (a) by which the resist was formed in the surface. It is side surface sectional drawing of the target object shown in FIG. 3 by which the part in which the resist is not formed among the surfaces was grind | polished.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  First, the structure of the processed product manufactured by the sandblasting method according to the present embodiment will be described.

  FIG. 1 is a side cross-sectional view of a processed product 10 manufactured by the sandblasting method according to the present embodiment.

  As shown in FIG. 1, the processed product 10 is an object generated when the surface 11 a of the object 11 is recessed. For example, the object 11 is glass.

  Next, the configuration of the ink jet printer used for manufacturing the processed product 10 will be described.

  FIG. 2 is a perspective view of the ink jet printer 20 used for manufacturing the processed product 10.

  As shown in FIG. 2, the ink jet printer 20 includes a table 21 on which the object 11 is placed and a main body 22 extending in the main scanning direction indicated by an arrow 20a.

  The table 21 extends in the sub-scanning direction indicated by the arrow 20b and supports the guide mechanism 21a that supports the main body 22 so as to be movable in the sub-scanning direction indicated by the arrow 20b on both sides in the main scanning direction indicated by the arrow 20a. I have.

  The main body 22 includes a guide rail 23 extending in the main scanning direction indicated by an arrow 20a, and a carriage 24 supported by the guide rail 23 so as to be movable in the main scanning direction indicated by an arrow 20a. The carriage 24 has a recording head (not shown) for ejecting ultraviolet curable liquid droplets toward the table 21 and ultraviolet light for curing the ultraviolet curable liquid ejected by the recording head. An LED (Light Emitting Diode) (not shown) for irradiating it is mounted.

  Next, a sandblasting method for processing the surface 11a of the object 11 by spraying an abrasive on the surface 11a of the object 11, that is, a method for manufacturing the processed product 10 will be described.

  FIG. 3A is a side cross-sectional view of the object 11 before being processed by the sandblasting method according to the present embodiment. FIG. 3B is a side sectional view of the object 11 having a resist 12 formed on the surface 11a.

1. Resist formation step The operator fixes the object 11 shown in FIG. 3A at a predetermined position on the table 21 of the ink jet printer 20, and displays an image based on arbitrary print data on the object 11 with an ultraviolet curing type. The inkjet printer 20 is instructed to record with the resist solution.

  Upon receiving an instruction from the operator, the inkjet printer 20 moves the carriage 24 with respect to the table 21 along the guide rail 23 in the main scanning direction indicated by the arrow 20a, and moves the main body 22 to the guide mechanism 21a with respect to the table 21. Along the sub-scanning direction indicated by the arrow 20b. That is, the ink jet printer 20 moves the carriage 24 according to the print data with respect to the object 11 fixed on the table 21. The ink jet printer 20 ejects an ultraviolet curable resist solution onto the object 11 fixed on the table 21 by the recording head on the carriage 24, and the ultraviolet curable ink discharged onto the object 11. The ultraviolet light is irradiated by the LED on the carriage 24 toward the resist solution. That is, the ink jet printer 20 performs UV ink jet printing of an ultraviolet curable resist solution on the object 11 in the form of an image based on the print data, as shown in FIG. A resist 12 made of a liquid is formed on the object 11.

  The resist solution used in the resist formation step is a radical polymerization type resist ink containing a monofunctional monomer or monofunctional oligomer and a polyfunctional monomer or polyfunctional oligomer. In particular, the resist solution preferably contains 40% by mass or more (more preferably 60% or more) of the monofunctional monomer or monofunctional oligomer and 30% by mass or less of the polyfunctional monomer or polyfunctional oligomer. Here, as the monofunctional monomer, for example, isobornyl acrylate, acrylic acid ester, or the like can be employed. Moreover, as a polyfunctional monomer, an amine modified acrylic acid oligomer etc. can be employ | adopted, for example.

2. Surface Polishing Step Next, the operator removes the object 11 from the table 21 of the inkjet printer 20, and the resist 12 formed on the surface 11a of the object 11 removed from the table 21 of the inkjet printer 20 tacks (adhesive). In such a state, an abrasive is sprayed on the surface 11a side of the object 11 using a device such as a sand blaster. Accordingly, the portion of the surface 11a of the object 11 where the resist 12 is not formed is polished with the abrasive.

  Here, the timing at which the surface polishing step is performed may be when the resist 12 has a tack when the resist solution constituting the resist 12 is completely cured, or the resist 12 is configured. When the resist solution to be cured is cured to some extent, the resist 12 may have a tack.

  FIG. 4 is a side cross-sectional view of the object 11 in which a portion of the surface 11a where the resist 12 is not formed is polished.

  For example, an object 11 in which a portion of the surface 11a where the resist 12 is not formed is polished by the surface polishing step is as shown in FIG.

  As shown in FIG. 4, an abrasive layer 13 is formed on the surface of the resist 12 having tack by collision of the resist 12 with the abrasive.

3. Resist Stripping Step Next, the operator immerses the object 11 in the stripping solution. Therefore, the resist 12 on the surface 11a of the object 11 is peeled from the surface 11a of the object 11 by being swollen or dissolved by the stripping solution.

  The object 11 from which the resist 12 is peeled off from the surface 11a by the resist peeling step is completed as a processed product 10 as shown in FIG.

  As described above, in the sandblasting method according to the present embodiment, since the resist 12 has a tack in the surface polishing step, the abrasive layer 13 is formed on the surface of the resist 12 due to the collision between the resist 12 and the abrasive. As a result, direct collision between the resist 12 and the abrasive is prevented, and as a result, damage to the resist 12 is prevented. Therefore, the sandblasting method according to the present embodiment can prevent the resist 12 from polishing a portion of the surface 11a of the object 11 that is not originally planned to be polished, thereby improving the yield compared to the conventional method. Can do.

  In the sandblasting method according to the present embodiment, the strength of the resist 12 formed on the surface 11a of the object 11 by the resist forming step is an elongation of 120% or more and 400% or less, or B or more and 2H or less. The surface polishing step may be performed with the pencil hardness being. Here, the pencil hardness is a hardness defined in JIS K5600-5-4.

  In the sand blasting method according to the present embodiment, the resist 12 formed on the surface 11a of the object 11 in the resist forming step has a strength of 120% or more and 400% or less, or a pencil of B or more and 2H or less. When the surface polishing step is performed in the state of hardness, the resist 12 is soft even if the abrasive collides with the layer 13 on the resist 12 on which the abrasive layer 13 is formed. Since the impact of the collision is absorbed by the property, damage of the resist 12 in the surface polishing step can be more effectively prevented.

  In the sandblasting method according to the present embodiment, the strength of the resist 12 formed on the surface 11a of the object 11 by the resist formation step is in a state where the elongation is less than 120%, or the pencil hardness is less than B. In the state, the surface polishing step may be performed.

  In the sandblasting method according to the present embodiment, since the resist solution used in the resist formation step is an ultraviolet curable solution, the resist solution is hardened compared to the configuration in which the resist solution is an organic solvent type solution. The speed is high, and as a result, the overall speed of a series of processing can be improved.

  In addition, although the sandblasting method which concerns on this Embodiment is utilized for manufacture of the processed goods 10 of glass, you may be utilized for manufacture of the processed goods 10 other than glass.

  In the sandblasting method according to the present embodiment, an ultraviolet curable liquid is used as the resist liquid used in the resist forming step. For example, a resist liquid other than the ultraviolet curable liquid such as an organic solvent type resist liquid is used. May be adopted.

  In addition, the stripping solution used in the resist stripping step of the sandblasting method according to the present embodiment may be any substance that can strip the resist 12 from the surface 11a of the object 11. For example, at least a part of the monofunctional monomer or monofunctional oligomer and the polyfunctional monomer or polyfunctional oligomer contained in the resist solution has a free acid group (acrylic acid derivative), and the acid value is When it is 100 or more, an aqueous solution of a basic compound such as an alkali metal hydroxide such as sodium hydroxide, N-methyldiethanolamine, pyridine, or piperidine may be employed as the stripping solution.

  The sandblasting method according to the present embodiment includes a resist stripping step. However, in the case of the processed product 10 in which the resist 12 does not have to be stripped from the surface 11a of the object 11, the resist stripping step is performed. It does not have to be provided.

11 Object 11a Surface 12 Resist

Claims (4)

A sandblasting method of processing the surface by spraying an abrasive on the surface of an object,
A resist forming step for forming a resist with the resist solution on the surface by inkjet printing on the surface, and spraying the abrasive on the surface side of the object on which the resist is formed by the resist forming step And a surface polishing step for polishing a portion of the surface where the resist is not formed,
The sand polishing method, wherein the surface polishing step is performed in a state where the resist formed on the surface by the resist forming step has a tack.   The surface polishing step is a step executed in a state where the strength of the resist formed on the surface by the resist forming step is an elongation of 120% or more and 400% or less. Sandblasting method.   2. The step according to claim 1, wherein the surface polishing step is performed in a state where the strength of the resist formed on the surface by the resist forming step is a pencil hardness of B to 2H. Sand blasting method.   The sandblasting method according to any one of claims 1 to 3, wherein the resist forming step is a step of performing UV inkjet printing on the ultraviolet curable resist solution.

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