JP2011167804A - String for ink pot - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a string 1 for an ink pot satisfying both of transferring of a clear ink line and durability. <P>SOLUTION: The string 1 for an ink pot includes a core 11 formed of a required number of first raw yarns 11a and a sheath 12 formed by combining a plurality of second raw yarns 12a into a braided shape outside the core 11. According to the constitution, a required tensile strength can be secured by the core 11, the surface becomes smooth and does not wear easily compared with the case of a twist yarn as the sheath 12 is in the braided shape, flattening of a sectional shape in a moment when the string 1 is flipped by a finger and collides with a working object surface after being extended over the working object surface is suppressed by the core 11 in inking work, and thereby the clear ink line equivalent to a case of using a twist yarn can be transferred. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a thread used in a black ink brush for drawing in woodwork or construction work.

  Inkwood is widely used as a tool for drawing lines in woodwork or construction work. In the process of pulling out the thread wound around the spool, the ink brush is brought into contact with an ink penetrating member such as a sponge impregnated with ink so that the ink sticks to the thread. The ink line is transferred (inked) by placing it on the construction target surface and then flicking it with a finger to cause it to collide with the construction target surface.

  Conventionally, as a yarn used in this type of ink brush, for example, a twisted yarn of nylon or a twisted yarn of nylon and aramid fiber as described in Patent Document 1 is employed. This is because the twisted yarn does not change greatly in cross-sectional shape at the moment when it is made to collide with the construction target surface, and therefore, a clear black line can be transferred.

JP 2007-952 A

  However, twisted yarns are more likely to wear than braided yarns and have a problem of poor durability. In addition, although nylon and aramid fiber twisted yarns are excellent in durability, they consume a lot of sumi ink, and with the same amount of sumi ink, only half the number of times of inking can be printed as compared to the case where twisted yarn made of only nylon is used, There is a problem that the ink must be replenished frequently.

  In addition, because the twisted yarn is twisted in one direction in a spiral shape, it may be twisted if tension is not applied to some extent when the yarn is pulled out or taken up. There is also a problem that it is difficult to make ink because there is almost no elongation when it is flicked with a finger after being stretched on the target surface.

  The present invention has been made in view of the above-described points, and a technical problem thereof is to provide an ink bud yarn that can satisfy both clear ink line transfer and durability. .

  As a means for effectively solving the technical problem described above, the ink jet yarn according to the invention of claim 1 includes a core portion composed of a required number of first raw yarns and a plurality of second original yarns outside thereof. It consists of a sheath part in which yarns are braided. According to this configuration, the core portion can ensure the required tensile strength, and the sheath portion is braided so that the surface is smoother and less likely to wear than in the case of twisted yarns, and in addition, in the sanitization operation, the yarn is Flattening of the cross-sectional shape at the moment of striking the construction target surface after strung on the construction target surface is suppressed by the core, so that a clear black line equivalent to the case of using twisted yarn is transferred. And no wrinkling occurs when the yarn is drawn or wound.

  The ink line in this document is not limited to ink ink in a strict sense, and includes ink ink and water-based paint.

  According to a second aspect of the present invention, there is provided the ink-jet yarn according to the first aspect, wherein the first raw yarn and the second raw yarn are made of nylon.

  According to a third aspect of the present invention, there is provided the ink brush thread according to the first aspect of the present invention, wherein the core portion is made of a monofilament made of the first raw yarn whose core is thicker than the second raw yarn.

  According to a fourth aspect of the present invention, there is provided the ink jet yarn according to the first aspect, wherein the core portion is a twisted yarn obtained by twisting a plurality of first raw yarns.

  Further, according to a fifth aspect of the present invention, there is provided the ink brush thread according to the first aspect, wherein the ratio of the diameter of the core portion to the yarn diameter is 10% or more and less than 50%.

  According to the ink brush thread of the first aspect of the invention, it is possible to improve the durability necessary for the inking operation and to transfer a clear ink line equivalent to the case where the twisted thread is used.

  According to the ink brush thread according to the invention of claim 2, since the first raw yarn of the core part and the second raw yarn of the sheath part are made of nylon, in addition to the effect of claim 1, on the construction target surface Sufficient tensile strength when stretched and moderate elongation can be obtained, and good workability can be ensured during inking.

  According to the ink brush thread according to the invention of claim 3, the core portion is made of one first raw yarn that is thicker than the second raw yarn. Since the liquid is not retained, in addition to the effect of the first aspect, the consumption of the colored liquid such as the ink can be suppressed due to the repetition of the inking operation.

  According to the ink brush thread according to the invention of claim 4, since the core portion is a twisted yarn, the ink is also retained in the core portion. Therefore, in addition to the effect of claim 1, it is sufficient even if the yarn diameter is small. A clear ink line can be transferred by applying ink.

  According to the ink brush thread according to the invention of claim 5, by setting the ratio of the diameter of the core portion to the yarn diameter to be 10% or more and less than 50%, sufficient tensile strength and moderateness when stretched on the construction target surface Elongation can be obtained, and wear resistance superior to that of twisted yarn can be ensured.

1 is a perspective view showing a preferred embodiment of a string for ink brush according to the present invention. It is sectional drawing of the ink bud which shows the usage example of the string for ink buds concerning this invention. It is explanatory drawing which shows the method of an abrasion test.

  Hereinafter, preferred embodiments of the ink brush thread according to the present invention will be described with reference to the drawings.

  The ink-jet thread 1 according to the embodiment shown in FIG. 1 has a thread diameter (thread thickness) φ1 of about 0.7 mm, a core portion 11 made of one first raw yarn 11a, It consists of a sheath portion 12 in which a large number of second raw yarns 12a are assembled in a braid shape on the outside.

  The first raw yarn 11a and the second raw yarn 12a are both made of nylon monofilaments, and the first raw yarn 11a is thicker than the second raw yarn 12a and has a so-called Tegs shape. . Nylon is used because nylon is superior in tensile strength, elongation and wear resistance compared to other synthetic fibers, and is also resistant to bending. However, as the first yarn 11a, nylon is used. In addition, those made of a fluorine-based resin (fluorocarbon or the like) can also be suitably used.

  FIG. 2 is a cross-sectional view showing an example of the ink brush 2 in which the ink brush thread 1 according to the embodiment shown in FIG. 1 is used.

  That is, this type of ink candy 2 is provided with a spool 22 and an ink penetrating member 23 in a case 21, and the thread 1 is wound around the outer periphery of the spool 22 urged in the winding direction by a spiral spring 24. While being in contact with the ink penetrating member 23 made of sponge or the like impregnated with ink, the ink is drawn out from a thread outlet 21 a formed at one end of the case 21. A chalcone 25 having a needle 25a for attaching to a construction target surface such as wood is attached to the tip of the yarn 1 drawn out from the yarn lead-out portion 21a.

  In the inking (drawing) operation by the ink brush 2, first, the yarn 1 is pulled out from the bobbin 22 by moving the case 21 after the calco 25 is fixed to an arbitrary point on the construction target surface (not shown). Since the ink sticks to the thread 1 by contact with the ink penetrating member 23, the thread 1 is applied with an appropriate tension between the thread lead-out portion 21a of the case 21 and the calco 25. A straight ink line can be transferred by flicking the finger toward the surface.

  When the ink brush 2 is moved toward the calco 25 fixed to the mating member after the above-described summing operation is completed, the spiral spring 24 that is stored with the rotation of the bobbin 22 when the thread 1 is pulled out. Since the bobbin 22 rotates in the winding direction by the urging force, the yarn 1 is automatically wound. Finally, when the chalcone 25 is pulled out from the mating member, the yarn 1 is further wound and the chalcone 25 is locked to the yarn outlet portion 21a of the case 21 in a semi-contained state.

  The yarn 1 according to the present invention has a smoother surface than the case of a twisted yarn because the sheath portion 12 constituting the outer layer is braided, so that it is drawn out from the ink fountain 2 as described above, the transfer of the ink line, and the bobbin 22 Even if the operation such as winding is repeatedly performed, it is difficult to be worn, and therefore the life when the yarn diameter is the same is longer than that of the conventional twisted yarn.

  For example, when a normal braid such as six or eight is used for the ink brush, the cross-sectional shape of the thread is flattened by the impact at the moment when it strikes the construction target surface by flicking with a finger. It is difficult to transfer a thin and clear black line because it changes so as to be crushed. However, the yarn 1 of the present invention is a nylon monofilament (first filament thicker than the second raw yarn 12a constituting the sheath portion 12 of the outer layer). Since the core portion 11 made of one raw yarn 11a suppresses flattening of the cross-sectional shape of the sheath portion 12, it is possible to transfer a thin and clear black line equivalent to the case where a twisted yarn is used.

  In the yarn 1 of the present invention, the ratio of the diameter φ2 of the core portion 11 (first raw yarn 11a) to the yarn diameter φ1 is preferably 10% or more and less than 50%. Usually, the tensile load when tensioning to the construction target surface in the ink marking work is 1 to 2 N. However, when the diameter φ2 of the core 11 is less than 10% with respect to the yarn diameter φ1, When stretched, the elongation (sag) increases, and it is difficult to obtain the effect of preventing the cross-sectional shape of the thread from collapsing at the moment of collision with the construction target surface. As a result, it is impossible to transfer a thin and clear black line. . On the other hand, when the diameter φ2 of the core portion 11 is 50% or more with respect to the yarn diameter φ1, the amount of ink in the sheath portion 12 is reduced, and the elongation when stretched on the construction target surface is small. This is because the calco 25 comes off from the construction target surface when it is flicked with a finger, and it is easy to cause curl and breakage when wound on the bobbin 22.

  Table 1 shows the test results. All of the yarn samples to be tested are made of nylon, and the diameter of the yarn is 0.7 mm. Of these, Comparative Example 1 is a twisted yarn and has been conventionally used for ink brushes, and Comparative Example 2 is a core part. There is no braid. On the other hand, in Examples 1 to 4, nylon teg yarn was used for the core (first raw yarn), and the ratio of the diameter of the core to the yarn diameter was 10.6% in Example 1. Example 2 was 25.9%, Example 3 was 50.0%, and Example 4 was 67.1%.

  In the abrasion test, as shown in FIG. The 400 thread bar 101 is brought into contact with the thread sample S to be tested so that it bends at about 150 degrees with the file bar 101 as a boundary, and the thread sample S is tensioned by a weight 103 of 400 grams via the roller 102. In this state, the file rod 101 is reciprocated in the longitudinal direction (direction perpendicular to the cross section in the figure) at a speed of 8.26 mm / s, and the sliding amount until the yarn sample S is worn and cut (the file rod 101 Product of one round trip distance and the number of round trips). The sliding amount was up to 1000 mm.

  The elongation test is a measurement of the amount of elongation when 1N and 2N tensile loads are applied to the yarn sample. This is because, as described above, the tensile load is usually 1 to 2 N when it is stretched on the construction target surface in the inking operation.

  The inking test is performed by loading a yarn sample into the ink cartridge and performing the inking (drawing) operation by the method described in paragraph 0025. The feeling of

  As a result of these tests, Comparative Example 1, which is a twisted yarn, was able to strike a clear black line, but it was too stretched and slackened when the yarn was stretched, and the abrasion resistance was also low. In addition, Comparative Example 2 which is a braid without a core part has abrasion resistance, but in an actual inking test, the slack when the thread is stretched is large, and the cross-sectional shape of the thread is thin and clear. The ink line is not obtained and it can be seen that it is not suitable for ink brush use.

  On the other hand, Example 1 shows lower abrasion resistance than Comparative Example 2 but superior to Comparative Example 1 which is the current specification, and there is less sagging when a yarn is stretched in an actual ink test. I was able to strike a clear line.

  When Examples 1 to 4 are compared, in Example 1, the wear cutting of the yarn occurs simultaneously with the wear cutting of the sheath portion of the outer layer, whereas the wear resistance increases as the ratio of the diameter of the core portion to the yarn diameter increases. It is high. This is because, in Examples 2 to 4, even after the sheath portion of the outer layer was cut due to wear, the entire yarn was not cut until the wear of the core portion progressed to some extent. However, in Examples 3 and 4 in which the ratio of the core diameter to the yarn diameter is 50% or more, the tension of the thread is poor, and specifically, the elongation when the thread is stretched is too small. When repelling, it was easy for the calco to slip out of the surface to be constructed, and the core portion had a too high diameter ratio, which was a harsh feel.

  Therefore, as a result of the test described above, it was confirmed that the specifications of Examples 1 and 2 in which the ratio of the diameter of the core portion to the yarn diameter was 10% or more and less than 50% were suitable for the ink brush.

1 Yarn 11 Core 11a First raw yarn 12 Sheath 12a Second raw yarn

Claims (5)

  A string for ink brush characterized by comprising a core portion comprising a required number of first raw yarns and a sheath portion in which a plurality of second raw yarns are assembled in a braid form on the outside thereof.   2. The ink candy yarn according to claim 1, wherein the first raw yarn and the second raw yarn are made of nylon.   2. The ink brush yarn according to claim 1, wherein the core portion is made of a monofilament made of the first raw yarn that is thicker than the second raw yarn.   2. The ink brush yarn according to claim 1, wherein the core portion is a twisted yarn obtained by twisting a plurality of first raw yarns.   The ink brush thread according to claim 1, wherein the ratio of the diameter of the core portion to the yarn diameter is 10% or more and less than 50%.

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