JP6472691B2 - Topcoat for tape measure tape and tape measure tape coated with the topcoat - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a top coat for a tape measure tape applied to protect the measurement scale of a tape measure tape and a base coat that becomes a tape ground color from scratches and disappearances caused by sliding, and in particular, specializes in a tape measure tape. The present invention relates to a top coat for a tape measure tape.

  Conventionally, with a general tape measure tape, an undercoat serving as a base is applied to a thin base material which is the main body of the tape, and then a base coat such as white as a tape ground color is applied on the undercoat, and then this base coat is applied. A scale for measurement is displayed on the base coat by printing or the like, and a top coat for protecting the base coat and the scale from scratches or disappearance due to sliding or the like is applied to complete the tape.

  In the application of the top coat, it is fixed on the tape by baking coating, or a predetermined coating material is attached and cured on the tape surface to cover the tape surface.

  The undercoat / basecoat / scale / topcoat changes the shape of the tape measure tape, that is, when the tape measure tape is stored in the case, the shape changes to a flat state and is wound around a rotating drum. When pulled out from the case, it will return to its original shape curved in the width direction of the tape, and when used, the tape may be bent into a hairpin shape. It is applied with a hardness that can follow the shape change of the tape so that it does not peel off from the base coat.

  However, since the top coat is applied for the purpose of protecting the base coat and the scale from scratches and disappearance due to sliding or the like, considering the purpose, at least the surface has a high hardness and is resistant to sliding. Although wear must be increased, as described above, since it is applied with a hardness that can follow the tape shape change when using a tape measure, it can be applied by baking or by coating with a coating material. However, since the hardness of the top coat must be set low, the wear resistance is also low, and therefore it cannot sufficiently withstand long-term use of the tape. That is, in setting the hardness of the top coat, there is a conflicting relationship between improving the wear resistance and following the shape change, so this problem has not been solved yet.

  In addition to the low wear resistance as described above, the conventional top coat has a top surface that is fixed by baking, so the friction coefficient tends to be high because the surface is flat. However, since the coating is thick, it is difficult to make the tape measure case compact, and the coating is easily peeled off from the side surface of the tape. In recent years, the top coat is generally applied by baking, which can be easily performed and is effective for making the tape measure case compact.

JP 2008-268142 A JP 2014-0665814 A

  The object of the present invention is to improve the abrasion resistance of the top coat so that the base coat and scale under the top coat can be protected over a long period of time, and can follow the change in the shape of the tape when using the tape measure. An object of the present invention is to provide a top coat for a tape measure tape and a tape measure tape coated with the top coat.

  In order to solve the above-mentioned problems, a topcoat for a tape measure tape according to the present invention is a topcoat for a tape measure tape adjusted to a hardness capable of following the shape change of the tape measure tape, and the topcoat includes A plurality of transparent miniature bodies having at least corners that are curved are mixed, and a bulge is formed on the coating surface by at least the miniature bodies near the surface by drying after coating.

  Further, the plurality of miniature bodies have repellency on the surface, and a part of the miniature bodies in the vicinity of the surface is exposed from the coating surface by drying after coating.

  Further, the plurality of minimal bodies are formed by curved surfaces.

  Further, the plurality of minimal bodies are spheres.

  Further, the plurality of miniature bodies are made of glass, acrylic, polycarbonate, polypropylene, nylon, silicon, or a single substance or a combination thereof.

  Describing in detail the top coat for the tape measure tape described above, the shape change of the tape measure tape means that when the tape is housed in the case, the shape changes to a flat state and is wound around a rotating drum. In addition, when pulled out from the case, it returns to the original shape curved in the width direction of the tape, and in use, the tape may be bent into a hairpin shape. Is changing.

  The hardness adjusted to follow the change in shape of the tape measure tape is taken into consideration that the shape of the tape changes as described above, and the paint used for coating the tape including the top coat is applied to the tape. The hardness (hardness) of the coating film after the coating film was adjusted (about 3H to 4H after curing) so that the coating film would not peel off when the shape change occurred, and the tape shape changed. Even in this case, the coating film can cope with this change. Therefore, even if the tape shape changes by adjusting the coating film hardness, the coating film does not peel off.

  A transparent minimal body having curved surfaces at least at its corners is a very small solid with a plurality of adjacent planes, and all corners generated at the boundary between the plane and the plane are chamfered to form a curved surface. It is a solid that is. In other words, it is a solid in which a plane and a plane are connected via a curved surface. In addition, it is desirable that the ratio of a curved surface is larger than that of a plane when the ratio of one plane and one curved surface in the solid is compared.

  The size of this minimal body is selected depending on the dimensions of the tape measure to be applied (width, thickness, degree of curvature, etc.) and the thickness of the top coat, etc. It is selected in the range of 10 μm to 0.1 μm.

  In addition to the above-described minimal body having at least the corners of a curved surface, the minimal body having a curved surface as a whole or a minimal body formed in a sphere are used.

  The minimal body material may be any material that can be formed transparently. For example, glass, acrylic, polycarbonate, polypropylene, nylon, silicon, or a combination of these materials may be used. Glass is mainly composed of silicate, acrylic and polycarbonate are organic glass, and silicon is hard.

  The hardness of the minimal body may be appropriately set in accordance with the usage form of the tape in consideration of the degree of wear due to sliding between the minimal body and the external member. In a tape measure tape used for general dimension measurement, it is desirable that the hardness be as high as possible.

  The above-mentioned minimal body is mixed with the top coat to be in a suspended state, and after the top coat is applied and dried, a bulge is formed on the coated surface by at least the minimal body near the surface. Further, if the minimal body has repellency on the surface, after the top coat is applied and dried, a part of the minimal body near the surface is exposed from the coated surface.

  Furthermore, this tape measure tape is mixed with a top coat adjusted to a hardness that can follow the shape change of the tape measure tape, at least the corners are curved, and dried after application. It is characterized in that it is formed by applying a topcoat for a tape measure tape that is formed so that a bulge is formed on the coating surface by at least a local minimum body. Further, if the microbody has surface repellent properties, the topcoat for a tape measure tape in which a part of the microbody near the surface is exposed from the coated surface after the topcoat is applied and dried. It is characterized by being applied.

  According to the topcoat for a tape measure of the present invention, it is possible to maximize the performance of both the improvement in wear resistance and the follow-up to the shape change, which have been conflicting with each other. That is, by applying this top coat, the contact between the surface of the top coat and the surface of the external dimension measuring member can be made point contact, so that the friction coefficient of the top coat surface can be reduced and the top coat surface can be reduced. The wear resistance of the coat surface can be improved. Therefore, since the top coat can sufficiently withstand long-term use, it is possible to securely protect the base coat that is the color of the tape under the top coat and the scale for measurement over a long period of time. Moreover, if the base material of a tape is a steel material, the rust conventionally produced in the base material by scratching can also be suppressed.

  And since the hardness of this top coat can be set to a hardness that can follow the change in shape of the tape measure tape like the conventional top coat, it is wound around the rotating drum inside the tape measure case with its shape changed to a flat state. Even if the shape is changed to the original state where the tape is pulled out from the case and curved in the width direction of the tape, or the tape is bent into a hairpin shape at the time of use, the top coat is There is no peeling from the scale under the coat and the coating film of the base coat.

  In addition, since the friction coefficient of the top coat surface can be reduced, this top coat greatly reduces the sliding resistance when pulling the tape, and the torque of the tape pull spring can be reduced. Can be made compact, contributes to the compactness of the tape measure case and the weight reduction of the tape measure, and furthermore, the top coat can be applied by baking coating, which can be easily performed, which increases the size. It has market competitiveness and is economically superior.

The partially cutaway perspective view of the tape measure tape which applied the top coat concerning the present invention. Sectional drawing which showed the contact state of the tape and external member at the time of use. The figure which expanded a part in FIG. The expanded sectional view which showed the contact state of the tape and external member at the time of use. The perspective view which showed an example of the automatic winding type tape measure.

  Hereinafter, the topcoat for a tape measure tape according to the present invention and the tape measure tape coated with the topcoat will be described based on specific examples shown in the accompanying drawings. Moreover, although the double-sided scale tape which displayed the scale on both front and back is shown in a present Example, it may become a single-sided scale by the specification of a tape measure. In addition, the base material / undercoat / basecoat / scale / miniature / topcoat etc. in the figure are drawn with a thicker and wider diameter than the actual one in order to make the figure easy to see.

  FIG. 1 is a perspective view in which a part of a tape measure tape 1 to which the top coat is applied is cut out, and a cross-section of the cut-out portion (cut-out portion 2) is an enlarged cross-sectional view of the cut-out portion. Shown in.

  Reference numeral 3 in the enlarged sectional view of the notch is a thin plate-like base material made of resin, steel, or the like, which is the main body of the tape, and reference numeral 4 is an undercoat applied to improve the biting of the paint. Reference numeral 5 is a base coat which becomes the color of the tape base, reference numeral 6 is a scale for measurement, and reference numeral 7 is applied to protect the base coat 5 and the scale 6 mainly from damage or disappearance due to sliding. The top coat of the present invention, 8 is a minimal body mixed in the top coat 7.

  Note that the paint used for the undercoat 4 / base coat 5 / scale 6 / top coat 7 is a paint adjusted to a hardness that can follow the shape change of the tape measure tape 1 (about 3H to 4H after curing). When the tape measure tape 1 is housed in the case, the shape changes to a flat state and is wound around a rotating drum. When the tape is pulled out from the case, the tape tape 1 is bent in the width direction of the tape. When the tape is bent into a hairpin shape depending on the measurement environment, for example, when the measurement operation is performed again, the undercoat 4 / base coat 5 / scale 6 / top coat 7 And will not peel from the coating.

  Further, as shown in the enlarged sectional view of the notch, the tape measure 1 coated with the top coat 7 is formed on the flat surface 7a, which is the surface of the top coat 7, by the minimal body 8 mixed with the top coat 7. A bulge 9 is formed. That is, when the top coat 7 is applied, the paint that has turned along the outer surface of the microbody 8 located substantially on the surface of the top coat 7 is cured, and the flat surface 7a of the top coat 7 is raised.

  FIG. 2 is a cross-sectional view showing the contact state between the tape and the external member when using the tape of the tape measure. FIG. 2 (a) shows the state when the use period of the tape is not so long. FIG. 2B shows a state when the tape usage period is long.

  2 (a) and FIG. 2 (b) are different from each other in FIG. 2 (a) because the period of use of the tape is not so long in FIG. In contrast to the state in which wear due to sliding does not occur at the apex 9a of the bulge 9 of the top coat 7 that comes into contact with the surface 11, in FIG. The top 9 of the top coat 7 in contact with the surface 11 of the external member 10 (see FIG. (A)) and its periphery gradually wear by sliding, and is mixed with the top coat 7 from the portion of the top 9. A portion 8a of the minimal body 8 is exposed to the outside. Note that there is a process in which the portion of the bulge 9 is gradually scraped from the apex 9a portion and changes flatly until the portion 8a of the minimal body 8 is exposed to the outside. It is obvious that this is an extremely small increase value in consideration of the dimension of the microbody 8 that forms the bulge 9, and therefore has no influence on the slipperiness of the surface of the top coat 7. Further, FIG. 3 shows an enlarged view of the vicinity of this different portion. The figure corresponding to FIG. 2A is a diagram in FIG. 3, and the figure corresponding to FIG. FIG. 4B is a diagram in FIG.

  Sometimes, when the top coat 7 and the minimal body 8 are formed of, for example, an acrylic-based material, the top coat 7 obtained by curing the acrylic paint and the minimal body 8 as a molded product are molded products. It is obvious that the hardness of the minimal body 8 is much higher.

  FIG. 4 shows a case where a top coat 7 in which a minimal body 8 formed from polypropylene, nylon, and silicon having repellent properties is applied is applied to the surface, and the minimal body 8 located near the surface of the top coat 7 is shown in FIG. The part 8 a of the minimal body 8 is exposed from the surface 7 a of the top coat 7 from the beginning due to the repellency. That is, when the top coat 7 is applied, the outer side surface of the minimal body 8 located substantially on the surface of the top coat 7 repels the paint of the top coat 7, and in this state, the top coat 7 cures and the minimal body A portion 8 a of 8 is exposed from the flat surface 7 a of the top coat 7. In the minimal body 8, a minimal body having surface repellent properties or a surface having no repelling properties may be appropriately selected and used in accordance with the use environment of the tape measure. In addition, when using the minimal body which has repellency on the surface, you may make it have repellency by performing a repellency process to the minimal body which does not have repellency on the surface.

  Now, the operation of the top coat 7 will be described. First, FIG. 2 (a) is a state when the tape usage period is not so long, so that it is pulled out from the case (not shown) to measure the dimensions. When the tape measure tape 1 is placed on the surface 11 of the external member 10 that is the object to be measured, the portion of the tape measure tape 1 that comes into contact with the external member 10 is a flat surface that is the surface of the top coat 7 applied to the tape measure tape 1. It becomes the apex 9a of the rise 9 formed in 7a.

  When the tape tape 1 is pulled into the case in this state, the tape tape 1 is pulled into the case with the apex 9a of the bulge 9 in contact with the surface 11 of the external member 10. That is, when the tape measure tape 1 is drawn into the case, only the apex 9 a of the bulge 9 of the top coat 7 on the tape measure tape 1 slides in a point contact state where the surface 11 of the external member 10 is in contact. Accordingly, since sliding is performed by point contact, the slipperiness of the surface of the topcoat 7 is improved, and the friction coefficient of the surface of the topcoat 7 is reduced by the improvement of the slipperiness. Since the flat surface 7a of the top coat 7 basically does not come into contact with the surface 11 of the external member 10, the flat surface 7a is equal to being free from sliding wear.

  FIG. 2B is a state when the tape has been used for a long time, so that the tape tape 1 pulled out from the case (not shown) for measuring the dimensions is an external member as the object to be measured. When placed on the surface 11 of the tape 10, the part of the tape measure 1 that comes into contact with the external member 10 is external to the bulge 9 formed on the flat surface 7 a that is the surface of the top coat 7 applied to the tape measure 1. It becomes a part 8a of the minimal body 8 exposed to.

  When the tape measure tape 1 is pulled into the case in this state, a portion 8 a of the minimal body 8 exposed to the outside from the raised portion 9 of the top coat 7 due to wear of the top coat 7 is formed on the surface 11 of the external member 10. The tape measure tape 1 is drawn into the case in contact. That is, when the tape tape 1 is drawn into the case, a portion 8 a of the minimal body 8 exposed to the outside from the raised portion 9 of the top coat 7 in the tape tape 1 is in contact with the surface 11 of the external member 10. Slide in contact. Therefore, since the sliding is performed by point contact, the slipperiness of the surface of the topcoat 7 is maintained, and the friction coefficient of the surface of the topcoat 7 remains small due to the maintenance of the slipperiness. Since the flat surface 7a of the top coat 7 basically does not come into contact with the surface 11 of the external member 10, the flat surface 7a is equal to being free from sliding wear.

  Therefore, by applying the top coat 7, as described above, the state when the tape usage period shown in FIG. 2 (a) is not so long is of course shown in FIG. 2 (b). Even when the tape is used over a long period of time, the point contact state in which the part 8a of the minimal body 8 exposed to the outside from the raised part 9 of the top coat 7 contacts the surface 11 of the external member 10 over a long period of time. Since it lasts, the decrease in slipperiness of the surface of the topcoat 7 can be made equal to zero. That is, when the use of the tape measure 1 is started, the top coat material at the apex 9a portion of the bulge 9 of the top coat 7 ensures the slipperiness of the surface of the top coat 7, and the use of the tape measure tape 1 progresses. When the top coat material of the 9a portion is worn, the slipperiness of the surface of the top coat 7 is secured by the portion 8a of the minimal body 8 exposed to the outside from the bulge 9 portion. Further, since the minimal body 8 is a transparent solid body, it has a high hardness and strength and can be seen through. Therefore, the slipperiness of the surface of the topcoat 7 and the visibility of the scale under the topcoat 7 are ensured for a long period of time.

  In addition, when the top coat 7 mixed with the repellency minimal body 8 is applied to the surface shown in FIG. 4, the minimal body exposed to the outside from the flat surface 7a of the top coat 7 from the beginning of the tape measure tape use. 8 slides in a point contact state where a portion 8 a of 8 is in contact with the surface 11 of the external member 10.

  By the way, in the event that a considerable range of the miniature body 8 that has been in contact with the surface 11 of the external member 10 from the beginning has fallen off due to the extremely long use or overuse of the tape, the microminiature body that has fallen off has fallen. When the minimum body 8b located in the layer adjacent to 8 becomes a substitute for the minimum body 8 and the top coat 7 is worn by sliding and a part of the minimum body 8b is exposed to the outside, this exposed part is the outer member 10 It contacts the surface 11 in a point contact state (see FIGS. 3 and 4).

  FIG. 5 shows an example of an automatic winding type tape measure, and reference numeral 12 in the drawing is provided with a rotating drum for winding the tape measure tape 1 as a measuring tape around in a flat state. Reference numeral 13 is a hook piece provided for hooking the end of the measuring tape 1 to the end of the object to be measured, and reference numeral 14 is a fixed tape tape 1 pulled out. A brake lever 15 is a portable strap used when carrying the tape measure.

DESCRIPTION OF SYMBOLS 1 ... Tape measure tape 2 ... Notch part 3 ... Base material 4 ... Undercoat 5 ... Base coat 6 ... Scale 7 ... Top coat 7a ... Flat surface 8 ... Minimal body 8a ... Partial 8b ... Minimal body 9 ... Swell 9a ... Vertex 10 ... External member 11 ... surface 12 ... case 13 ... hook piece 14 ... brake lever 15 ... mobile phone strap

Claims (6)

  A topcoat for a tape measure tape adjusted to a hardness that can follow the change in shape of the tape measure tape, wherein the topcoat is mixed with a plurality of transparent miniature bodies having curved corners at least. A topcoat for a tape measure tape, wherein a bulge is formed on the coated surface by at least a local minimum near the surface by drying after coating.   The plurality of minimal bodies have surface repellency, and a portion of the minimal bodies near the surface is exposed from the coating surface by drying after coating. Top coat for tape measure tape.   The topcoat for a tape measure tape according to claim 1 or 2, wherein the plurality of minimal bodies are formed by curved surfaces.   The topcoat for a tape measure tape according to claim 1 or 2, wherein the plurality of minimal bodies are spheres.   The topcoat for a tape measure tape according to claim 1 or 2, wherein the plurality of minimal bodies are made of glass, acrylic, polycarbonate, polypropylene, nylon, silicon, or a single substance or a combination thereof.   A tape measure tape formed by applying the top coat for the tape measure according to claim 1 or 2.

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