JP2006297354A - Coating tool for uniformly coating coating liquid on coating surface of automobile body - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a coating tool uniformly coating a film-forming substance for protecting the coated surface of an automobile body, and a coating liquid dissolving or dispersing the substance, having a volatile solvent as a principal component, to form a thin film. <P>SOLUTION: This coating tool 17 uniformly coating the coating liquid on the coated surface of an automobile body, is formed by inserting a sponge core body 1 having a shape of an acute angle of a tip 15 side into a bag body 16 consisting of cloth impregnated with a coating liquid having a film forming substance and a volatile solvent as principal components, the solvent being capable of dissolving or dispersing the film forming substance. The bag body 16 is formed of cloth with a sliding angle of 35° or less from a horizontal face when a load of 490 Pa is applied to the cloth impregnated with the coating liquid, laminated to a thickness of 1 mm, and capable of impregnating 0.01-0.4 cc of coating liquid per 1 cm<SP>2</SP>. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention uniformly applies a thin film of a coating liquid mainly composed of a film-forming substance and a volatile solvent capable of dissolving or dispersing it on a painted surface of an automobile body, in particular, a painted surface of a new vehicle body, followed by drying and curing. The present invention also relates to an applicator for a coating liquid mainly composed of a film-forming substance used for protecting a painted surface of a body and a volatile solvent capable of dissolving or dispersing the substance.

  In general, the painted surface of the outer surface of an automobile body, the resin portion, the glass portion, or the painted surface of the interior of a vehicle, particularly the painted surface of a new vehicle body such as a passenger car, is a film-forming substance and it prior to vehicle shipment. Applying a coating solution mainly composed of a volatile solvent that can dissolve or disperse the material, and drying it to form a thin film on the painted surface to protect the painted surface and often improve the added value further. Has been done. In addition, even when such a film-forming substance and a coating liquid mainly composed of a volatile solvent capable of dissolving or dispersing the same are applied, the protective function is lost again after the endurance period has passed. It is also practiced to apply the coating liquid and finish it again. Therefore, the coating liquid mainly composed of a film-forming substance and a volatile solvent capable of dissolving or dispersing it is impregnated in the cloth, and the coated liquid is wiped by holding the impregnated cloth with a palm or the like and wiping the coated surface. A thin film is formed. In this case, when the coating liquid is depleted from the cloth, the coating liquid is infiltrated into the cloth again, or it is dropped on the painted surface and wiped with the cloth again to form a coating film of the coating liquid on the painted surface. .

  By the way, in an actual automobile, there are many curved surfaces and uneven portions. For this reason, it is difficult to spread the coating solution uniformly and sufficiently on these painted surfaces, and the film thickness of the finished film tends to be uneven, and this requires extra work such as correction. Therefore, in order to prevent such a situation from occurring, it is necessary to spread the coating liquid uniformly and sufficiently on the painted surface. For this purpose, the coating liquid containing a film-forming substance and a volatile solvent capable of dissolving or dispersing it as a main component must be spread on the painted surface in as short a time as possible. Furthermore, an appropriate applicator for that purpose was required. However, it is not easy in practice to obtain a finished surface having a uniform thin film thickness. This required skilled manual work.

  On the other hand, as an applicator that can apply the coating liquid to a thin film having a uniform film thickness, an applicator and an application method for applying the coating liquid in line contact with the surface to be applied have been developed (for example, Patent Document 1). reference.). By the way, in this applicator and application method, line contact is an absolute condition as described above, and for this purpose, a tool with a special handle is required, and for this reason, it is difficult to apply the coating liquid to a fine uneven portion, and it is wide. There was a problem that a coating film could be formed only on a flat area. Furthermore, the coating method using this applicator relates to a coating method that does not generate an interference film on smooth transparent glass.

  On the other hand, a brush for painting has been proposed in which a brush surface-constituting fabric made of fibers knitted with ultrafine fibers is attached to a roller body (see, for example, Patent Document 2). Further, a painting brush in which a surface of a roller body is coated with a tubular cloth body of ultrafine fibers has been proposed (for example, see Patent Document 3). However, these have a brush-rotating brush shape, and have a problem that only a thick coating film having a thickness of 1 μm or more can be applied by applying a coating liquid having a relatively high viscosity.

JP 2003-164793 A Japanese Utility Model Publication No. 5-74679 JP-A-11-19573

  The problem to be solved by the present invention is to uniformly apply a coating liquid composed mainly of a film-forming substance and a volatile solvent capable of dissolving or dispersing it in order to protect the painted surface of the body of an automobile. An object of the present invention is to provide an applicator for forming a thin film and an applicator applicable not only to a flat painted surface but also to a fine curved surface.

  The means of the present invention for solving the above-mentioned problems is an applicator for thinly and uniformly applying a coating liquid to a painted surface of an automobile body according to the invention of claim 1, wherein the applicator is a film-forming substance. And a cloth that can be impregnated with a coating liquid mainly composed of a volatile solvent that can dissolve or disperse it, and from a sponge having a shape with at least one tip at a sharp angle to a bag that can be grasped by hand. An applicator for applying a coating liquid thinly and uniformly onto a painted surface of an automobile body having a core body inserted therein.

  According to a second aspect of the present invention, there is provided an applicator for uniformly applying a coating liquid onto the painted surface of the automobile body according to the first aspect, wherein a film-forming substance and a volatile solvent capable of dissolving or dispersing the film-forming substance are provided. The coating liquid is applied to the painted surface of an automobile body having a cloth base material which is impregnated with a main component and a core body made of a sponge having a sharp shape with at least one tip at a bag body made of polyester. Is an applicator for applying a thin and uniform coating.

According to a third aspect of the present invention, there is provided an applicator for uniformly applying a coating liquid onto a painted surface of an automobile body according to the means of the first or second aspect, wherein the film-forming substance and the coating liquid can be dissolved or dispersed. A bag made of a cloth that can be impregnated with a coating liquid containing a volatile solvent as a main component slides on the same surface as an automobile when a load of 490 Pa (= 5 gf / cm ² ) is applied to the cloth impregnated with the coating liquid. Application having a bag formed of a cloth having an angle of 35 ° or less from a horizontal plane and layered with a thickness of 1 mm and capable of impregnating 0.01 to 0.4 cc of coating liquid per 1 cm ² area. It is a tool.

  In the invention of claim 4, the bag body made of cloth in the means of any one of claims 1 to 3 is made of a cloth made up of a plurality of 2 to 4 sheets, It consists of a bag body with a thickness of 10 to 30 mm, a width of 40 to 100 mm, and a length of 50 to 300 mm. The size of this bag body is an acute angle with a tip in the length direction of 20 to 45 °. The core that consists of sponge plates with a sharp angle formed can be inserted, and the coating solution is evenly applied to the painted surface of the automobile body consisting of these bags and sponges. It is an applicator for doing.

  According to a fifth aspect of the present invention, in the applicator for uniformly applying the coating liquid to the painted surface of the automobile body according to any one of the first to fourth aspects, a sponge having a shape having at least one acute angle. The core body is an applicator characterized in that a sponge is formed from open cells or closed cells.

  The cloth satisfying the above conditions of the bag body made of cloth has polyester (hereinafter referred to as “PET”) as a main base material from the viewpoints of impregnation property, ejection property, slipperiness, durability and the like of the coating liquid. Of these, those made of 100% PET are preferred. As a commercially available cloth, a knit cloth (trade name: ME wiper) made of 100% PET 100% long fiber having a fiber diameter of 11 μm, and a knit cloth made of 100% PET fiber having a fiber diameter of 15 μ (trade name: raw machine product number 80370). ), Knitted cloth (trade name: Clean Knit 04026w) made of PET fibers having a fiber diameter of 60 μm, and cloths made of 100% polyester non-woven fabric (trade name: GC120).

  In the present invention, since the applicator of the invention of claim 1 has a core body made of a sponge having an acute angle at least one of which is inserted, the distal end side is easily bent, and therefore the distal end side is bent at an appropriate angle. When applied, it is easy to distribute the force applied to the painted surface, and therefore it is possible to work smoothly even in a curved portion. Furthermore, the core body inserted from the bag body after this application can be removed, and the bag body and the core body can be separately washed and reused. Furthermore, since the cloth base material of the applicator of the invention of claim 2 is made of polyester, it is extremely excellent in terms of impregnation property, discharge property, slipping property, durability, etc. of the coating solution. When the bag body is impregnated with the coating liquid, the applicator of the invention is made of a material having a sliding start angle of 35 ° or less. A thin film can be applied uniformly with an impregnated applicator. Furthermore, the applicator of the invention of claim 4 is of a size that can be gripped by hand, and can be applied efficiently by directly gripping and coating not only a flat painted surface but also a narrow curved surface such as the inside of a door knob. Can do.

  Furthermore, the applicator of the invention of claim 5 has a sponge core made of open cells or closed cells, and when having a sponge core made of open cells, the sponge core is impregnated with a coating liquid. As a result, the coating liquid oozes out from the core impregnated with the coating liquid in the middle of application, so that the situation where the coating liquid is exhausted is reduced. The sponge core made of open cells has the advantage of being familiar with the hand. Further, when the sponge core is composed of closed cells, the coating liquid is not substantially sucked into the polyurethane core more than necessary for the coating, so the cloth is impregnated in the cloth. Even if too much hand force is applied, the excess coating liquid is unlikely to come out of the core, so the coating liquid that oozes out from the bag is relatively uniform and thinly extended. It is easy to apply uniformly, and the bag and core after use can be easily cleaned. As described above, the present invention has an excellent effect that has not been achieved in the past.

  The best mode for carrying out the present invention will be described. The core body 1 used for the applicator 17 of the present invention was formed from an elastic material. That is, as the elastic material of the core 1, a polyurethane / polyethylene / rubber sponge can be used, but a polyurethane sponge particularly preferable in terms of durability and workability is used. The core 1 was formed by hot pressing a 60 mm thick polyurethane sponge at a temperature of, for example, 190 ° C. and compressing it to a thickness of 20 mm. For example, when the core body 1 is shown in FIG. 1, the core body 1 has a trapezoidal shape, and the shape thereof is formed at the rear end 4 of the surface perpendicular to the trapezoidal lower and upper bases 2 and 3. The length of the lower base 2 is 120 mm, the length of the upper base 3 is 90 mm, the width 5 is 80 mm, the height of the rear end 4 is 20 mm in thickness, and the tip 6 in the length direction is an acute angle, For example, it is formed at an acute angle of 30 °. In the invention of claim 4, the elastic material of the core is formed from a polyurethane sponge composed of open cells, and on the other hand, formed from a polyurethane sponge composed of closed cells which is a material that hardly absorbs liquid instead of the open cells. did. Further, these cores 1 are inserted into a bag 16 formed of a cloth that can be impregnated with a coating liquid mainly composed of a film-forming substance and a volatile solvent that can dissolve or disperse the film-forming substance. As a coating liquid mainly composed of a film-forming substance and a volatile solvent capable of dissolving or dispersing the same, Japanese Patent Application Laid-Open No. 2003-327908, Japanese Patent No. 3367953, Japanese Patent No. 3374368, Japanese Patent No. 3302930 The coating liquid described in the publication is exemplified.

  Furthermore, for various kinds of commercial cloths having the trade names shown in Table 1 as these cloths, the workability, the appearance of the coated surface, etc. are comprehensively determined using the coating liquid composed of the peeling paint liquid described in the patent publication No. 3367953. evaluated. The overall evaluation level of the overall evaluation is shown by numbers 1 to 6. Table 1 shows that the overall evaluation level 1 is inferior and 6 is the most excellent. In addition, the code | symbol of aw was attached | subjected to the commercial product name of Table 1 for the convenience at the time of showing as a graph in FIG. In addition, the overall evaluation in Table 1 is based on the workability A such as the presence or absence of hair loss from the cloth at the time of work, compatibility with the unevenness of the coated surface, compatibility between the cloth and the coating liquid, the occurrence of white spots during drying, and the time of application. Appearance B such as the occurrence of black spots due to excessive application of coating liquid, presence or absence C of hydrophilic spots due to the strength of hydrophilic performance, and workability D such as the addition of coating liquid and the presence or absence of sliding performance in the vertical and horizontal directions It was evaluated and shown at the overall evaluation level. The “problem with hydrophilic spots” in the comments in Table 1 may or may not occur with hydrophilic spots, indicating that reproducibility is unstable. However, even in this case, the nylon cloth is excellent in terms of durability, so even if there is a problem with hydrophilicity, the cloth with the signs a, b and e is a cloth that conforms to PET. Can be used sufficiently for applicators.

  In Table 1, a list of commercially available cloths having an overall evaluation level of 6 is a knit cloth (trade name: ME wiper) made of 100% PET 100% long fibers having a fiber diameter of 11 μm, and a fiber diameter of 15 μm of a symbol n. Knitted cloth made of 100% PET fiber (trade name: raw machine product number 80370), knitted cloth made of PET fiber having a fiber diameter of q of 60 μm (trade name: clean knit 04026w), or polyester fiber of code w It was the cloth which consists of the nonwoven fabric which consists of (brand name: GC120) etc.

  Furthermore, the sliding performance test which investigates the sliding performance with respect to the coating surface to process of the cloth of the brand name shown in Table 1 was implemented. In this test, first, a cloth in a dry state not impregnated with a coating solution composed of a hydrophilic polymer was prepared, a load of 490 Pa was applied on each cloth, and a coated steel sheet equivalent to a horizontally disposed automobile painted surface was used. Placed on the painted surface. Next, the coated surface of the coated steel sheet was gradually inclined, and the angle of inclination from the horizontal plane where the cloth to which the load was applied started to slide was determined to be the sliding start angle. In this case, the cloth of the brand name shown in Table 1 marketed as cloth was used. The cloth used in the above test was formed from a plurality of cloths that were overlapped so that the total thickness was 0.5 to 5.0 mm, imitating a bag. Next, the results of the sliding performance test in the dry state are shown by reference numerals in FIG. 2 together with the overall evaluation level.

The applicator 17 in which the core body 1 is inserted into the bag body 16 made of the cloth of these comprehensive evaluation levels 6 has a thickness of 1 mm of the cloth forming the bag body 16 and 0.01 to 0.4 cc per 1 cm ² area. The bag body 16 is formed from a cloth impregnated with the coating liquid, and the core body 1 is inserted into the bag body 16 from the acute end 15 side. As can be seen in FIG. 2, the above-mentioned cloth having the overall evaluation level 6 in Table 1 has a sliding start speed of 35 ° or less from the horizontal plane.

  This bag body 16 was formed by sewing, for example, a stack of three cloths into a size having a width of 40 to 100 mm and a length of 50 to 300 mm. These sizes are obtained from the ease of the work of grasping by hand and the amount of coating liquid impregnated. The bag body 16 is inserted with a core body 1 made of a sponge having an acute angle on at least one of its longitudinal ends 15 formed at an acute angle of 20 to 45 °, for example, the polyurethane sponge shown in FIG. did. If the angle of the tip 15 is less than 20 °, it is necessary to increase the length of the bottom of the trapezoid. As a result, the applicator 17 itself becomes too large and difficult to handle. It is difficult to apply the bending force when bending and applying the force of the hand to be gripped. The sewing method of the bag body 16 will be described with reference to FIG. 2. First, for example, a knit cloth made of 100% PET 100% long fiber having a fiber diameter of 11 .mu. A maximum width fabric 8 having a length of 19.5 cm and a width of 11 cm, an intermediate width fabric 9 having a length of 19.5 cm and a width of 9.5 cm, and a minimum width fabric 10 having a length of 19.5 cm and a width of 8.5 cm. Cut into three pieces of fabric. Next, these three fabrics were overlapped, and as shown in (b), a main stitch 11 on the end side of the central overlap portion and a main stitch 12 on both end portions in the longitudinal direction were sewn.

  In this case, the fine stitches of the knit stitches were used as the surface of the fabric, and the above-described main stitches 11 and 12 were sewn with careful arrangement so as to be the outermost layer when this fine surface was completed. Further, the portion of the maximum width fabric 8 on the outer side in the finished product was folded in the center so as to be on the inner side to obtain (c). Further, the side portion of the knitted fabric of the maximum width fabric 8 which is the most side portion of the mountain folds of (c) was sewn to the main stitch 13 to form a bag. The periphery of the mouth portion of the bag body is trimmed, and a bias tape border 14 is formed by sewing as shown in (d) to prevent the mouth end from fraying, and the obtained bag body is turned upside down. The bag 16 used in the present invention was completed with the outermost surface of the maximum width fabric 8 facing outward. The core body 1 made of a sponge having an acute angle shape is inserted into at least one of the bag body 16 shown in FIG. 1, the side portion of the main stitch 13 shown in FIG. 4 is provided, and the bias tape edge 14 is provided at the rear end. The applicator 17 includes a bag body 16 having an acute angle at the tip 15 and a core body 1 inserted into the bag body 16.

  By the way, when the core body 1 made of polyurethane sponge is made of open-cell polyurethane sponge in the means of claim 4, the coating liquid used for coating is impregnated in the core body 1. Therefore, it is possible to perform a coating operation for a long time by impregnating the impregnation amount once. However, on the other hand, it is necessary to extend and apply a large area to a uniform thin film in a short time as long as these polymers do not crosslink. For this reason, when using the core 1 made of open-cell polyurethane sponge, skill is required when the amount of impregnation is large. Furthermore, when the core body 1 is an open-cell polyurethane sponge, the coating liquid impregnated in the core body 1 is used up or the core body 1 is quickly washed after use to remove the remaining coating liquid. Otherwise, the remaining coating solution will be crosslinked and hardened in the core body 1, and the sponge core body 1 can no longer be used.

In order to prevent this from happening, when impregnating the applicator 17 with the coating liquid, the coating liquid is impregnated with 0.01 to 0.4 cc per 1 cm ^{2 of the} cloth with a thickness of 1 mm in advance. The coating liquid is weighed out and transferred to a flat bottom container, and then impregnated on the application surface of the applicator 17 or directly sprinkled on the application surface of the fabric of the bag body 16 to the core body 1 portion. Application was possible with almost no impregnation. After the predetermined area was applied, the next portion was applied by replenishing the coating solution in the same manner. As a result, a coating layer having a thickness of about 0.1 μm could be uniformly formed over a wide area. At this time, if the amount of the coating liquid to be impregnated per 1 cm ^{2 of} the cloth with a thickness of 1 mm is less than 0.01 cc, a sufficient film is not formed on the coated surface due to insufficient liquid amount and the performance is uneven. In addition, when the amount of the coating liquid impregnated per 1 cm ² of the cloth with a thickness of 1 mm exceeded 0.4 cc, problems such as coating unevenness were caused by the excessive amount of the liquid.

  The use state of the applicator 17 of the present invention will be described with reference to FIG. The applicator 17 in which the coating liquid is immersed in the cloth bag 1 is placed with the acute angle portion of the tip 15 as the side of the painted surface 18 of the automobile body to be processed. Grip and lift the rear end 4 side of the core body 1 and press the end 15 side against the painted surface 18 of the automobile body to move quickly and apply it in an appropriate curved shape. In this case, the application pressure on the painted surface 18 of the automobile body is adjusted by appropriately bending the applicator 17 as described above.

  As described above, only the cloth bag 16 is impregnated with the coating liquid, so that when the applicator 17 is gripped and applied by hand, even if the gripped hand pressure applied to the applicator 17 slightly varies, an extra The coating liquid did not ooze out from the core body 1. For this reason, it was possible to easily apply the coating liquid uniformly and thinly onto the painted surface 18 of the automobile body. In this case, since only one coating liquid impregnated into the bag body 16 is applied, the coating liquid can be sufficiently extended within a short period of time, and the applied portion does not extend completely and does not remain uneven. It was. In this case, when the coating liquid impregnated in the bag body 16 is used up, the used bag body 16 is impregnated with the coating liquid again, or the coating liquid is dropped on the painted surface 18 of the automobile body and the remaining liquid is continuously applied. The painted surface 18 of the automobile body could be applied with the applicator 17.

  On the other hand, instead of the above-mentioned open cell polyurethane sponge, these cores 1 are formed from closed cell polyurethane sponges that are difficult to absorb, and the coating liquid to be applied is difficult to be absorbed by the polyurethane sponges. . By forming the core body 1 from the closed cell polyurethane sponge which hardly absorbs the coating liquid, the core body 1 is impregnated with the coating liquid when the coating liquid is applied to the painted surface 18 of the automobile body. Therefore, only the cloth of the bag body 16 covering the outer periphery of the core body 1 can be impregnated with the coating liquid. It never happened.

  In addition, the cloth body 16 is made of the same base material and only one waste cloth having a thickness of 0.2 mm without overlapping the three cloth cloths as described above to form the bag body 16 having a total thickness of 0.5 to 5.0 mm. In the case where the bag body 16 is formed, the amount of impregnation of the coating liquid into the bag body 16 is not sufficient, the application area is reduced, and the coating liquid needs to be added many times. For this reason, it was not possible to apply uniformly and uneven coating occurred. In addition, if the cloth body 16 is made of cloth cloth so that the total thickness is 5 mm or more, the amount of the coating liquid impregnated becomes too large, resulting in a large loss of use amount and corresponding to uneven parts. Problems such as being unable to fill up occurred. According to these experiments, in the present invention, a knit cloth (trade name: ME) made of 100% PET 100% long fiber having a fiber diameter of 11 μm, which is a single or a plurality of commercially available cloths, so that the total thickness is 0.5 to 5 mm. Wiper), knitted cloth made of 100% PET fiber having a fiber diameter of 15 μ (trade name: raw machine product number 80370), knitted cloth made of PET fiber having a fiber diameter of 60 μm (trade name: clean knit 04026w), or polyester fiber Each of the bag bodies 16 formed by overlapping cloths made of non-woven fabric (trade name: GC120) or the like can satisfy the conditions described in claim 2.

It is a perspective view which shows the external appearance example of the core body inserted in the applicator of this invention. It is a graph which shows the sliding performance at the time of the dry state of cloth. It is a figure which shows the manufacturing process of the bag body of the applicator of this invention. It is a perspective view of one embodiment of the applicator of the present invention. It is a perspective view which shows the use condition of the applicator of this invention typically.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Core body 2 Lower base 3 Upper base 4 Rear end 5 Width 6 Front end 7 Acute angle 8 Maximum width cloth 9 Intermediate width cloth 10 Minimum width cloth 11 Main sewing 12 Main sewing 13 Main sewing 14 Bias tape edge 15 Front end 16 Bag body 17 Application Tool 18 Painted surface of automobile body

Claims (5)

  It consists of a cloth that can be impregnated with a coating liquid composed mainly of a film-forming substance and a volatile solvent that can dissolve or disperse it, and has a shape with at least one tip at an acute angle in a bag that can be gripped by hand. An applicator for uniformly applying a coating liquid to a painted surface of an automobile body, wherein a core made of a sponge is inserted.   2. The painted surface of an automobile body according to claim 1, wherein the cloth base material which can be impregnated with a coating liquid mainly composed of a film-forming substance and a volatile solvent capable of dissolving or dispersing it is polyester. An applicator for uniformly applying the coating liquid to the skin. A bag body made of cloth that can be impregnated with a coating liquid mainly composed of a film-forming substance and a volatile solvent that can dissolve or disperse the film-forming substance contains a film-forming substance and a volatile solvent that can dissolve or disperse the film-forming substance. When a load of 490 Pa is applied to the cloth impregnated with the coating liquid as a component, the sliding angle is 35 ° or less from the horizontal plane, and the coating liquid is impregnated with 0.01 to 0.4 cc per 1 cm ^{2 in} thickness of 1 mm. 3. An applicator for uniformly applying a coating liquid to a painted surface of an automobile body according to claim 1 or 2, wherein the applicator is formed from a cloth that can be used.   A bag made of cloth is formed from a cloth having a total thickness of 0.5 to 5.0 mm obtained by superimposing a single cloth or a plurality of cloths, having a thickness of 10 to 30 mm, a width of 40 to 100 mm, and a length of 50 to 300 mm. A core body made of a sponge made of a sponge having a length of at least one end in the length direction and having an acute angle of 20 to 45 ° can be inserted. The applicator for apply | coating a coating liquid uniformly to the coating surface of the motor vehicle body of any one of 1-3.   5. The automobile body according to claim 1, wherein the core made of a sponge having an acute angle at at least one tip is formed of open cells or closed cells. An applicator for evenly applying the coating liquid to the painted surface.

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