JP2019034375A - Wool buff - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a buff made of a fiber material having excellent grinding power to eliminate defects such as paper grain and polishing scratches while utilizing the characteristics of the buff made of a fiber material capable of obtaining a good surface gloss during buff polishing. SOLUTION: A wool buff for surface polishing is characterized in that a pile surface in contact with a surface to be polished is a pile surface of a cut pile knit using wool fibers as pile yarns. In addition, the wales of the base fabric of the cut pile knitted fabric are 8 to 28 gauge per inch, the course is 16 to 45 courses, the thickness of the pile yarn is 200 to 1200 denier, and the length of the cut pile is 3. It is 10 mm. [Selection diagram] Fig. 3

Description

  The present invention relates to a buff surface polishing tool such as a painted surface of an automobile or the like, and a resin molded product surface, and more particularly to a wool buff using a wool fiber material used in the polishing tool.

  In order to give a surface gloss as a finish of a paint surface, it is widely performed to buff the paint surface using various rotary polishers (rotary polishing tools). The finish polishing of the painted surface is performed to finish the surface to a smooth and uniform glossy surface. Unlike the mirror finish of general metal molded products, the surface is made of a flexible resin, and the surface is polished by buffing. The buffs attached to the polishing tool play an important role in order to impart the varnish, and various buffs are used. As the buff, a buff made of a fiber material, a buff made of a sponge material, or the like is used. The reason why the buff having two different properties is used for the finish polishing of the painted surface is that the resin is remarkably soft as compared with metal and glass, so that only the buff made of a fiber material does not give a gloss. The buff is used when a large polishing force is required. However, due to the difference in hardness between the abrasive grains and the coating film, if the abrasive grains do not move well on the surface to be polished, they will immediately bite into the wound. Therefore, this scratch cannot be erased with a sponge buff with a low polishing power made for gloss. As the buff made of fiber material, pile woven fabric with hairs made of various fiber yarns is used for the base fabric, and it has excellent polishing power and uniformity of remaining scratches. Is widely used for buffing. As the fiber material, natural fibers such as wool (wool), cotton, silk, and various regenerated fibers and synthetic fibers are used, and they are used as wool buffs, cotton buffs, and the like.

  Buffing, which is performed as a finishing process on the painted surface and resin molded product surface, is performed following the paper hanging process that corrects defects such as protrusions and recesses on the painted surface, and while erasing the paper generated by this paper hanging, This is done to impart surface gloss. Therefore, in buffing, in order to obtain surface gloss, the polishing scratches already existing on the coating surface are ground and erased, and newly generated polishing scratches are made finer and smaller to give surface gloss.

  A buff made of a specially designed fiber material is often used for initial polishing in buff polishing because polishing flaws generated by polishing work are fine and uniform, and a good surface gloss can be obtained by the subsequent sponge buff. However, the buff made of ordinary fiber material designed to prevent biting scratches has a small grinding force to erase defects such as paper eyes and polishing scratches already existing on the painted surface, and this grinding force is increased. Therefore, it has been desired to increase the polishing efficiency.

  In order to realize good buffing, various buffs obtained by improving the buff using a fiber material have been proposed so far. For example, Patent Document 1 discloses a rayon having a flat section with a specific flatness. A buff made of woven fabric or knitted fabric using a combination of cut pile groups and loop groups using multifilament yarns as a pile yarn has been proposed, and this buff is said to have higher gloss than wool or cotton. . However, in the cut pile group in this buff, it is an evaluation result with a moquette woven fabric which is a woven fabric (see [Table 1] of this document), and the pile group is an evaluation result with a weft loop pile fabric. The pile structure is a loop (see [Table 2] in this document). Patent Document 2 shows a buff made of a pile knitted fabric knitted in a loop shape. This buff is a vertical buff that causes the outer peripheral edge of a disk-shaped buff to act on the surface to be polished. The outer peripheral edge of the buff is formed in a bag shape, and polishing is performed at this portion. And as a fiber material, the super extra fine fiber by a synthetic fiber is considered preferable.

  Patent Document 3 proposes a moquette which is a fabric having “pile” in which wool or synthetic fiber and wool are mixed as a fabric for wool buffing. In this woven fabric, the wool buff can be washed with water by carrying out a distillation with a thermoplastic resin instead of applying a latex liquid as a distillation, which has been performed to prevent hair loss of “keb”. There has been proposed a woven fabric that does not need to be deformed and that does not require individual application of an adhesive when the buff is produced.

  In Patent Document 4, as a polishing pad (buff) used for polishing and polishing the coated surface, a backup material made of a material such as polyurethane foam or soft rubber having an Asker F type hardness of 60 or more, and a fiber length (pile length) A composite buff made of a surface material made of a woven fabric having a thickness of 2 mm or less is shown. However, the surface material of the composite buff is made of natural fibers such as silk or wool, but is used as a woven fabric or a non-woven fabric.

  As described above, various buffs made of fiber materials including wool have been proposed so far, and all of them have grinding power to erase defects such as paper eyes and polishing scratches already existing on the above-mentioned painted surface. It has not always been sufficient to increase the polishing efficiency and increase the polishing efficiency.

JP-A-10-235564 JP-A-10-52322 JP 2000-190234 A JP 2001-105296 A

  The object of the present invention is to take advantage of the characteristics of the buffing with a fiber material that can leave only scratches that can be erased even with a sponge buff with weak polishing power, has a high glossing ability, and can obtain a good surface gloss during buffing. On the other hand, it is to provide a buff made of a fiber material having excellent grinding power for eliminating defects such as paper eyes and polishing scratches.

  The inventor of the present application has conducted various studies in order to obtain a buff with excellent grinding force by a fiber material, and as a result, has found that a cut pile knitted fabric using wool fibers as a pile yarn is excellent in grinding force. It came to make.

  The buff made of a fiber material provided in the present invention is a wool buff for surface polishing, wherein the pile surface in contact with the surface to be polished is a pile surface of a cut pile knitted fabric using wool fibers as pile yarns.

  In the above wool buff, the base of the cut pile fabric is 8 to 28 gauge per inch, the course is 16 to 45 course, the pile yarn thickness is 200 to 1200 denier, and the length of the cut pile The thickness is preferably 3 to 10 mm, particularly 4 to 7 mm. Furthermore, although the wool fiber is used as the fiber material of the pile yarn of the cut pile knitted fabric, other fibers may be mixed and used. In this case, in order not to impair the function and effect of the wool fiber, it is used in the range of 30% by weight or less. For example, when silk fibers are used to improve the gloss of the polished surface after polishing, the content is preferably in the range of 5 to 30% by weight.

  The knitted fabric in the present invention is also called a knit, and the knitted fabric (knit) is formed by the intersection of yarns (warp and weft) from two directions of the warp direction and the weft direction. The yarn is made by continuously using one of the warp direction yarns, and the stitches are continuous. Further, it includes a weft knitting in which the stitches are continuous in the weft direction and the warp knitting in which the stitches are continuous in the warp direction.

  The surface polishing wool buff of the present invention is a cut pile knitted fabric that is made of a knitted fabric using a wool fiber material and cuts a loop pile of a pile knitted fabric that has a loop pile on the surface of a base fabric to form a pile surface. . As shown in FIG. 1 (a), the pile knitted fabric is knitted by knitting a pile yarn to the ground yarn 2 constituting the base fabric, so that each cut pile 1 obtained by cutting the loop pile is the ground yarn 2 The cut pile 1 is lined up in a direction close to the knitted fabric 22 composed of the ground yarn 2 as shown in FIG. On the other hand, in the pile woven fabric, as shown in FIG. 2, the pile yarn is woven together with either the ground warp yarn 4 or the ground weft yarn 5 constituting the base fabric (in FIG. 2, along the weft yarn 5), This pile yarn is pulled out to make a loop pile, and this pile is cut into a cut pile 3, which is a cut pile fabric. Therefore, in the woven fabric, the pile has a structure straddling the ground warp or the ground weft in the base fabric, and each pile is directed in a different direction. However, when the yarn density is high enough to be used as a buff, the yarns are lined up in a direction orthogonal to the base fabric (around 90 degrees) due to the tension of each yarn.

  On the other hand, wool, which is a natural fiber, is composed of a crimp that has a double structure in composition and a scale that covers the surface, and the scale has a scale-like structure in which two cuticles are covered with one epicuticle. The cut pile yarn is not composed of a single fiber but is composed of a plurality of fibers. In FIGS. 1 and 2, the scale 6 on the fiber side surface of each cut pile is schematically shown. As described above, the cut pile 1 of the surface polishing wool buff according to the present invention is in the direction of approaching the base fabric of the knitted fabric as a characteristic of the cut pile knitted fabric, so that the fiber side surface of each pile acts efficiently on the polished surface during buff polishing. Therefore, the grinding force by the scale 6 on the side of the fiber can be fully exhibited, and the grinding force of this wool buff becomes excellent. On the other hand, in the pile fabric, as described above, since the piles 3 are arranged along the direction orthogonal to the base fabric, the action of the fiber side surface on the surface to be polished is not efficient. In addition, if the pile is left in a loop shape, the degree of freedom of movement of the pile is reduced during buffing, the contact between the fiber side surface of each pile and the surface to be polished is not sufficient, and the grinding force of the scale scale is sufficient. Since it cannot be used, the grinding force decreases, which is not preferable, and it is necessary to cut the pile loop to form a cut loop.

  In addition, as described above, when other fibers are added to the wool fibers, it is necessary to set the range to 30% by weight or less so as not to impair the effects of the wool fibers. A buff made of silk fiber pile has a good surface gloss on the buffed surface. Therefore, by mixing silk fiber with wool fiber as a pile thread, the surface gloss after polishing is increased in addition to the high grinding force of wool fiber. It is possible to improve, that is, improve the gloss of the painted surface.

  As described above, the wool buff of the present invention is a buff with improved grinding force that eliminates defects such as paper eyes and polishing scratches on the painted surface while utilizing the characteristics of the buff made of a fiber material.

It is explanatory drawing of the stitch and cut pile in a cut pile knitting, (a) is explanatory drawing seen from the upper surface, (b) is explanatory drawing seen from the side surface. It is explanatory drawing of the ground warp, ground weft, and cut pile in a cut pile fabric. It is explanatory drawing of the cut pile in the cut pile fabric which used the hair part as the hook shape. It is side surface explanatory drawing of the polishing tool which attached the wool buff.

  The embodiment of the present invention will be further described below.

  The wool buff of the present invention is attached to a rotary polisher type polishing tool and used for buffing. FIG. 4 shows a side view of the polishing tool 50 to which the wool buff 20 is attached. The polishing tool 50 has a motor 52 built in the main body 51, a drive shaft 53 that outputs a driving force from the motor 52, and a rotating disk 54 fixed to the motor 52. The wool buff 20 has the pile surface 21 as a front surface. The base fabric 22 is detachably attached to the rotating disk 54 by a mounting member 7 made of a hook-and-loop fastener or the like through a cushion material 23 made of soft rubber or sponge. The respective cut piles of the pile surface 21 are arranged in a direction close to the base fabric 22, and the side surfaces of the cut pile made of wool fibers can be efficiently applied to the surface to be polished. The polishing operation by the buffing tool 50 can be performed by an operator holding the main grip 55 and the subgrip 56 and pressing the pile surface 21 against the surface to be polished.

  In FIG. 4, as the buffing tool 50, a single rotation type polisher that performs polishing by simply rotating the rotating disk 54 is shown. However, the handy polisher is also a swing that performs forward / reverse rotation alternately. Type polisher, gear action polisher that performs complex trochoidal motion, and the rotational axis center of the rotating disk is installed at a position deviated from the center of the drive output shaft 53, thereby making the rotational motion of the rotating disk 54 irregular and complex motion. There are random action polishers. However, both types are the same in which the buff 20 is attached to the rotating disk 54 and used for the buffing operation, and the wool buff of the present invention can be applied to any polisher.

  The pile surface 21 of the wool buff 20 is a pile surface of a cut pile knitted fabric using wool fibers as pile yarn. As described above, FIG. 1 is an explanatory view of a stitch and a cut pile of a cut pile knitted fabric, and FIG. 2 is an explanatory view of a ground warp, a weft and a cut pile of a cut pile fabric. The cut piles 1 and 3 in these drawings are spun yarns and blended yarns such as eyelash yarns and spun yarns, and are composed of a plurality of fiber yarns, but are shown on the side surfaces of the cut piles 1 and 3 in the drawings. The scale 6 is conceptually shown. Also, the relationship between the stitches and the ground yarn and the cut pile represents only a part, and symbolizes that the other cut piles exist as fluff. As shown in FIG. 1, the direction of each cut pile 1 obtained by cutting the loop pile is a direction close to the knitted fabric 22 made of the ground yarn 2, and as described above, the fibers of each pile 1. The grinding force by the side scale 6 is exhibited. On the other hand, in the cut pile 3 of the cut pile fabric shown in FIG. 2, the direction of each pile is divided by the ground warp yarn 4, and the direction of the cut pile 3 is along the direction orthogonal to the base fabric (around 90 degrees). Therefore, the grinding force by the scale 6 on the fiber side surface of each pile 3 cannot be sufficiently exhibited.

  Further, it is known that, in a cut pile fabric for a wool buff, by not making the cut pile partly hairy on the base fabric, the hair part of the cut pile is made into a hook shape and the grinding force of the wool buff is increased. In this case, the reason why the grinding force of the buff is increased is considered as follows. FIG. 3 shows a cross-sectional view of a buff in which a cut pile is haired in a hook shape on the base fabric 10, and the hair portion 11 and the non-hair portion 12 are hook-like. In this case, the cut piles of the hairy portions 11 are arranged along the direction (around 90 degrees) orthogonal to the base fabric 10 as described above, and the cut pile 3a in the central portion of the heel corresponds to that. The cut piles 3b present at both ends of the heel are falling in the direction of the unhaired part. Therefore, the cut pile 3b is closer to the direction of the base fabric than in the case where the entire surface of the base fabric is bristled, the fiber side surface is likely to act on the surface to be polished, and the grinding force by the scale can be exhibited. However, the cut pile 3b is a part of the entire cut pile, and there is a limit to the exertion of the grinding force. On the other hand, in the cut pile knitted fabric, as described above, the cut pile 1 is arranged along the base fabric of the knitted fabric, so that the contact angle with the coating surface is about 180 degrees at the maximum and the contact area of the fiber side surface is large. Therefore, the grinding force on the fiber side surface can be used efficiently.

  On the other hand, the wool fiber side surface has a high frictional force due to the presence of the scale, but the scale has directionality, and the friction coefficient is larger when the friction is caused from the tip of the hair toward the root than the opposite. Therefore, as shown in FIG. 1, the cut pile 1 is woven so as to reciprocate along the ground yarn 2, so that only the one having a larger coefficient of friction is not used, but at least half of it is directed from the tip to the root. Scale can be used and the coefficient of friction is reduced, but the effect of friction on the side of the fiber can use all cut piles. On the other hand, in the cut pile woven fabric, the cut pile 3b that can use the fiber side surface even if the ridge is provided is limited to a part of the pile, and does not reach the cut pile knitted fabric.

  In order to knit a cut pile knitted fabric, a pile yarn is added to the ground yarn 2 constituting the base fabric, and the pile yarn and the pile yarn are fed to the knitting needle using a pile / sinker of a loom, and the pile is piled. While knitting the knitted fabric, the loop pile piled on the surface of the base fabric is cut to obtain a cut pile knitted fabric. The knitted fabric has a wage of 8 to 28 gauge per inch, a course of 16 to 45 course, a pile yarn thickness of 200 to 1200 denier, and a cut pile length of 3 to 10 mm, especially It is preferable that it is 4 mm-7 mm. If the length of the cut pile is less than 3 mm, the movement of the pile is limited during buffing, and the grinding force of the scale cannot be made sufficient. When the length exceeds 10 mm, the contact pressure between the surface to be polished and the pile surface is insufficient, and a sufficient grinding force cannot be obtained.

  In the wool buff, in order to prevent the pile yarn from falling off, it is possible to impregnate the back surface, which is the opposite side of the pile surface of the base fabric, with a resin or adhesive after knitting the cut pile knitted fabric, and fix the pile yarn to the base fabric. It is valid. In this case, it is necessary not to impregnate the cut pile planted on the pile surface.

  Further, as shown in FIG. 4, the cushioning member 22 attached to the back surface of the wool buff 20 is attached to the rotating disk 54 of the polishing tool 50 by the attachment member 7, and the pile surface 21 is pressed against the surface to be polished for polishing. Although provided for work, the attachment member 7 is preferably a hook-and-loop fastener so that the wool buff 20 can be detachably attached.

  In the present invention, a wool material that is a wool fiber or a mixed fiber mainly composed of a wool fiber is used as the pile yarn, but the fibers constituting the base fabric are not particularly limited, and are limited to these fibers. Without limitation, other natural fibers and synthetic fibers can be used.

  Cut pile knitted fabrics using wool fibers as pile yarns and wool buffs made of cut pile woven fabrics were manufactured, attached to a rotary polisher, and subjected to a buff polishing test, and the grinding power and surface gloss after polishing were compared. The surface to be polished is painted with black paint (BASF, trade name: Diamond) and Chrono Top Clear (trade name, made by BASF) as a clear coat, and dried with a far infrared heater with a panel temperature of 60 ° C for 1 hour. The painted surface was used.

  The coated surface is paper-coated with # 600 sandpaper to generate paper eyes, and then a very fine compound (trade name: 1st NeoBLack manufactured by Ketec Co., Ltd.) is dropped and a rotary polisher with various wool buffs attached. Buffing was performed, and it was confirmed how many times the paper was removed by dropping, and the grinding force was evaluated. And the glossiness of the polished surface after erasing the paper was also evaluated.

Tables 1 and 2 show the buffing test results. Table 1 shows the number of dripping times of the compound at which the paper disappears, and Table 2 shows L ^* a ^* b obtained by measuring the glossiness of the polished surface 20 times with a colorimeter and averaging the measured values. ^* Indicated by color values.

実施例であるカットパイル編物ではコンパウンド４回の滴下でペーパー目が消失し、比較例より、研削力に優れていることが分かった。

In the cut pile knitted fabric which is an example, the paper eyes disappeared by dripping 4 times of the compound, and it was found that the grinding force was superior to the comparative example.

研磨した塗装面は黒色であり、明度が低いものがより黒いので、Ｌ^*のより小さいものがツヤがある、すなわち良好な表面光沢度と判断され、数値差が０．５以下ではほぼ同等であるとされる。したがって、実施例１のウールバフは良好な表面光沢度の得られる従来のウールバフである比較例と同等のツヤ(光沢度)のある塗装面を得る能力を維持しつつ、表1に示すように、ペーパー目を消去する研削力に優れていると判断される。すなわち、実施例１のウールバフは、研削力に優れているが、表面光沢度に影響するような研磨傷を残さないバフであることが示されている。

The polished painted surface is black, and the one with low brightness is blacker. Therefore, the one with a smaller L ^* is glossy, that is, it is judged to have good surface glossiness. It is supposed to be. Therefore, as shown in Table 1, the wool buff of Example 1 maintains the ability to obtain a coated surface having a gloss (glossiness) equivalent to that of the comparative example which is a conventional wool buff that can obtain a good surface glossiness. It is judged that it has excellent grinding power for erasing paper eyes. That is, it is shown that the wool buff of Example 1 is a buff that is excellent in grinding force but does not leave polishing scratches that affect the surface glossiness.

  The method of the present invention is a wool buff that can be preferably applied to buff polishing of painted surfaces of automobiles, but can also be applied to mirror polishing of synthetic resin molded products.

DESCRIPTION OF SYMBOLS 1 Cut pile (knitted fabric) 2 Base yarn 3 Cut pile (woven fabric) 3a, 3b Cut pile (woven fabric hook shape)
4 Ground warp 5 Ground weft 6 Scale 7 Attaching member 10 Base fabric (woven fabric) 11 Pile hair part (畝)
12 Pile non-haired portion 20 Wool buff 21 Pile surface 22 Base fabric (knitted fabric) 23 Cushion material 50 Polishing tool 51 Main body 52 Motor 53 Drive shaft 54 Rotating disk 55 Main grip 56 Sub grip

Claims (2)

  A wool buff for surface polishing, wherein the pile surface in contact with the surface to be polished is a pile surface of a cut pile knitted fabric using wool fibers as pile yarns.   Cut pile knitted fabric base wale is 8 to 28 gauge per inch, course is 16 to 45 course, pile yarn thickness is 200 to 1200 denier, cut pile length is 3 to 10mm The wool buff for surface polishing according to claim 1, wherein

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