JP4448459B2 - Seal substrate and method for manufacturing seal substrate - Google Patents

Description

  The present invention relates to a seal stamp substrate and a method for manufacturing a stamp stamp substrate.

  Conventionally, for example, a seal is generally manufactured by engraving a seal on the end face of a columnar seal base material made of hard wood or a dense material such as animal horns or bones. It has been a long time since a stamping base material is made of a synthetic resin without using such a natural product as a raw material from the viewpoint of high cost.

  Synthetic resin stamp base materials are usually manufactured by a so-called molding process by injecting a predetermined synthetic resin material in a molten state into a cylindrical mold. It is just what it is presenting and is extremely murderous.

  In order to eliminate such inconveniences, two types of synthetic resins of different colors are gently mixed and injected into a mold to produce a stamped base material with a striped pattern, or a fine metal piece on a transparent molten resin In some cases, the metal pieces are scattered in the seal stamp base material by mixing.

  However, the seal stamp base material is very simple as a picture even if it is provided with a striped pattern on its peripheral surface or scattered with metal pieces inside, and all of them are in the same state, so it can claim originality. It won't be interesting.

  Therefore, it is often performed that a pattern is engraved on the outer peripheral surface of the seal stamp base material or various patterns are handwritten. By doing so, the uniform outer peripheral surface of the seal stamp substrate can exhibit originality.

  However, engraving or hand-drawing the pattern on the outer peripheral surface of the stamp base material one by one is very troublesome and inferior in productivity, so that the stamp base material with the pattern becomes expensive and cannot be widely spread. Has a problem.

  Moreover, since the pattern handwritten on the outer peripheral surface of the seal stamp base material is rubbed by hand every time it is used, there is a problem that it is easily peeled off. And once the pattern is partially peeled off, it becomes more unsightly than the one without the pattern.

  The present invention has been made in view of the situation as described above, and provides a seal substrate and a method for manufacturing a seal substrate in which the pattern once applied is not easily erased while ensuring the ease of application of the pattern. It is an issue.

The present invention, the problems in which was made as a method of manufacturing a seal substrate and seal substrate to solve, the invention includes a transparent bottomed tubular body, the inner circumference of the cylinder according to the seal base so as to have a predetermined gap between the surface and the core body is inserted into the cylindrical body has a smaller outer diameter than the inner diameter of the cylindrical body, wrapped all around the said core, the core body and the picture with the sheet member interposed between the inner peripheral surface of the outer peripheral surface and the cylindrical body of synthetic resins which solidification after being injected in a fluid state between the cylindrical body and the core body is formed is subjected It consists of a filler.

  According to the present invention, even if the surface of the seal stamp base material is rubbed by repeated use, the pattern provided on the core body is protected by the coated cylinder, There is no inconvenience that the outer peripheral surface is rubbed and peeled off like a picture handwritten on the outer peripheral surface, and the seal can maintain a beautiful state indefinitely.

  In addition to being able to easily adopt various patterns, it is possible to adopt not only simple patterns but also photographs and calligraphy, making the seals rich in originality. it can.

  The invention relating to the method for producing a seal stamp base material injects an amount of filler less than a full amount into a transparent bottomed cylinder, and then inserts the core into the cylinder to obtain the filler. The filling is performed over substantially the entire length of the outer peripheral surface of the core body, and the filler is further poured into the cylinder until it is full.

  According to this invention, since there is no troublesome process of engraving the peripheral surface of the cylindrical body or handwriting the design, it is easy to manufacture and suitable for mass production, and the manufacturing cost of the stamp base material having the pattern is also high It can contribute to reduction.

  According to the present invention, for example, there is no inconvenience of scraping and peeling off like a handwritten pattern on the outer peripheral surface of a conventional seal stamp base material, and the stamp can be kept in a beautiful state indefinitely. In addition to being able to easily adopt various types of patterns for sheet bodies with patterns, it is possible to adopt not only simple patterns but also photographs and calligraphy, and the stamps are rich in originality. Can be.

  According to the present invention, since there is no troublesome process of engraving on the peripheral surface of the cylinder or hand-drawing the design, it is easy to manufacture and suitable for mass production. It can contribute to reduction.

  FIG. 1 is a diagram showing a first embodiment of a seal stamp substrate according to the present invention, where (A) is a perspective view, (B) is a cross-sectional view taken along line AA, and (C) is a cross-sectional view taken along line BB. It is. As shown in FIG. 1, the seal stamp substrate 10 according to the first embodiment is provided on a transparent bottomed cylinder 20, a core 40 inserted into the cylinder 20, and the surface of the core 40. It is basically composed of a predetermined pattern 30 and a filler 50 such as a synthetic resin formed by being injected between the cylindrical body 20 and the core body 40 in a fluidized state and then subjected to a solidification process.

  In the present embodiment, the cylindrical body 20 has a cylindrical shape, but is not limited to a cylindrical shape, and has various shapes such as an elliptical shape, a rectangular shape, or a polygonal shape in a cross-sectional view. Can be adopted. In the present embodiment, the cylindrical body 20 is formed of an acrylic synthetic resin (acrylic resin). The acrylic resin is used for the cylinder 20 because acrylic resin (particularly polymethyl methacrylate (PMMA)) has high transparency, and the pattern 30 in the cylinder 20 can be clearly seen from the outside.

  The present invention is not limited to the cylindrical body 20 made of an acrylic resin, and may be other transparent synthetic resin (for example, polyethylene, polypropylene, polyvinyl chloride, polyamide, etc.) or transparent glass It may be. The term “transparent” includes opaqueness that allows the pattern 30 to be visually recognized.

  The pattern 30 is a sheet body with a pattern, and in this embodiment, Japanese paper is used as the sheet body. The pattern-attached sheet body 30 is formed by printing a predetermined pattern display portion 30a on the surface of the sheet body made of Japanese paper. The reason for adopting Japanese paper as the sheet body is as follows. That is, when the filler in a fluid state is injected into the cylindrical body 20, the filler penetrates into the pores of the coarse Japanese paper, and the Japanese paper is half the ground except for the picture display portion 30a. This is because it becomes transparent, and a fiber pattern peculiar to Japanese paper is revealed, so that the appearance of the seal stamp substrate 10 is very rich in texture.

  However, the present invention is not limited to the sheet body being Japanese paper, and may be ordinary western paper or a synthetic resin film. Further, the pattern display section 30a of the pattern-attached sheet body 30 includes not only patterns, characters, figures, symbols, or combinations thereof, but also photographs, handwritten drawings, and the like.

  For example, the pattern-equipped sheet body 30 is set so that the vertical dimension is slightly shorter than the inner dimension of the cylindrical body 20 in the axial direction, and the horizontal dimension is approximately equal to the outer peripheral length of the core body 40. ing. In addition, as a means to provide the pattern 30 in the core body 40, each pattern display part 30a may be stuck on the core body 40, or may be provided by thermal transfer, and is not limited.

  In the present embodiment, the filler is formed of, for example, an epoxy UV curable resin. Such resin is employed for the following reason. That is, the epoxy UV curable resin is solidified by mixing a predetermined curing agent in a liquid state before solidification and performing a heating treatment for a predetermined time, so that it is easy to handle and has excellent molding workability. Because. Further, the epoxy UV curable resin does not shrink at the time of curing, and has extremely good dimensional stability. Furthermore, the epoxy resin is excellent in workability such as engraving and is excellent as a material of the seal stamp substrate 10.

  The reason why the UV curable resin is used is that it is possible to prevent the filler from blocking the ultraviolet rays and prevent the pattern-equipped sheet body 30 from being discolored by sunlight. However, the present invention is not limited to the filler 50 being made of an epoxy resin, and another synthetic resin rich in dimensional stability may be employed instead of the epoxy resin.

  As shown in FIG. 1, the filler mixed with the curing agent is injected into the cylindrical body 20 into which the core body 40 around which the sheet body 30 with a pattern is wound is inserted, and then subjected to solidification treatment by heating. A seal stamp substrate 10 is obtained. The engraving surface 41 is formed on the end surface of the core body 40 exposed to the outside of the seal stamp substrate 10 obtained in this manner, and the engraving surface 41 is subjected to a predetermined engraving process to complete the seal stamp. .

  The core body 40 can be made of the same material as the cylindrical body 20, but is not particularly limited.

  FIG. 2 is a process diagram for explaining the manufacturing method of the seal stamp substrate 10 of the first embodiment. As shown in this figure, the stamp base material 10 of the first embodiment includes a primary injection process P1, a core body insertion process P2, a secondary injection process P3, a solidification process P4, and a finishing process P5. Manufactured by going through.

  The primary injection step P1 is a step of injecting a liquid filler 50 made of an epoxy UV curable resin mixed with a curing agent into the cylindrical body 20. In the primary injection step P1, the filler 50 is injected into the cylindrical body 20 in an amount less than the full amount. In the present embodiment, the filler 50 is injected into the cylindrical body 20 up to 15% to 30%, preferably approximately 20% of the internal volume of the cylindrical body 20. The reason for this is to ensure that the filler spreads over the entire length of the core body in the next core body insertion step P2.

  The core body insertion step P2 is a step of inserting the core body 40 whose surface is decorated into the cylinder body 20 into which the filler 50 has been injected until the full amount in the first primary injection step P1. It is. And in this core body insertion process P2, the core body 40 with a pattern which has an outer diameter dimension smaller than the internal diameter dimension of the cylinder 20 has a predetermined gap between the inner peripheral surface of the cylinder 20 Is gently inserted into the cylindrical body 20. In addition, the core body with a pattern is manufactured in advance so that the sheet body 30 with a pattern is wound around the outer peripheral surface of the core body 40 through an adhesive, for example.

  The second injection process P3 is a process of adding the filler 50 to the full amount in the cylindrical body 20 in which the core body 40 is inserted in the core body insertion process P2. By passing through the second injection step P3, the cylinder 20 is loaded with all of the materials that should constitute the seal substrate 10.

  In the solidification step P4, the cylindrical body 20 into which the filler 50 has been injected is charged in a predetermined soaking furnace 55 until the full amount is reached in the previous secondary injection step P3, and heat treatment is performed thereby. This is a process for solidifying the material 50. In the present embodiment, the temperature inside the soaking furnace 55 is controlled to 40 ° C. to 90 ° C. The cylindrical body 20 having the full amount of the filler 50 is loaded in the soaking furnace 55 and left to stand for 1 to 2 hours. By doing so, the filler 50 in the cylindrical body 20 is cured and solidified, and the original body 56 of the seal stamp substrate 10 is formed.

  In the next finishing process P5, the base material 56 thus obtained is subjected to a surface such as so-called water polishing that receives high-pressure water injection or so-called buffing that is polished by pressing the peripheral surface against a rotating buff. The seal substrate 10 as a product is processed.

  According to the seal stamp substrate 10 of the first embodiment manufactured as described above, even if the surface of the seal stamp is rubbed by repeated use, the pattern is protected by the cylindrical body 20, so that the conventional stamp stamp substrate 10 There is no inconvenience of scraping and peeling off like a handwritten pattern on the outer peripheral surface, and it is possible to maintain a beautiful state indefinitely.

  In addition, as the pattern display portion 30a of the pattern-attached sheet body 30, it is possible to adopt not only a simple pattern but also a photograph or a print, and the stamp base material 10 is extremely rich in specificity. In particular, if Japanese paper is used as the sheet body of the pattern 30, a unique texture of Japanese paper is created on the seal stamp substrate 10, and the seal stamp substrate 10 can be made rich.

  Furthermore, if a photographic paper photographed with an instant photo, commonly known as a photo booth, is used as the pattern 30, the seal base material 10 becomes an original souvenir of the owner and the tasteless dry seal is extremely interesting. It can be something that can arouse attachment.

  Moreover, the manufacturing method of the stamp base material 10 is easy to manufacture and suitable for mass production because there is no troublesome process of engraving the peripheral surface of the cylindrical body 20 and handwriting the design. Can contribute to cost reduction.

  The manufacturing method of the embodiment of the present invention is not limited to the above. For example, it may be a case where the primary injection step is omitted. Specifically, as shown in FIG. 3, a core body 40 whose surface is decorated is inserted into the cylindrical body 20 (core body insertion step, see FIG. 3A). The filler 50 is injected into the cylindrical body 20 in which the core body 40 has been inserted in the core body insertion step until the full amount is reached (injection step, see FIG. 7B). Thereafter, the solidification process is performed in the same manner as described above (see (b) in the figure).

  The stamp may be of a stamp type that does not require vermilion, as shown in FIG. In such a case, the seal stamp substrate 10 constitutes a handle portion (a portion to be sandwiched). And the seal | sticker part 60 which has a sculpture surface is attached to the front-end | tip of the seal | sticker base material 10 so that attachment or detachment is possible.

  Further, even if the core 40 of the seal stamp base material is solid, the core 40 can be formed in a cylindrical shape as shown in FIG.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows 1st embodiment of the seal | sticker base material which concerns on this invention, (A) is a perspective view, (B) is AA sectional view, (C) is BB sectional drawing. It is process drawing for demonstrating the manufacturing method of the seal stamp base material of 1st embodiment. (A)-(b) is process drawing for demonstrating the manufacturing method of the seal | sticker base material of 2nd embodiment. (A) is a figure which shows another seal stamp base material, (b) is sectional drawing which shows the seal stamp base material of other embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Seal substrate 20 ... Tube 30 ... Pattern (sheet body with pattern)
40 ... Core 50 ... Filler

Claims (2)

A transparent bottomed cylindrical body, so as to have a predetermined gap between the inner peripheral surface of the cylinder, is inserted than the inner diameter of the cylindrical body has a smaller outer diameter to the cylindrical body a core member was wound around the entire circumference of the core, and the picture with the sheet member interposed between the outer surface and the inner peripheral surface of the cylindrical body of the core, fluid state between the cylindrical body and the core body in solidification after it has been injected, characterized in that it consists of filling material of the synthetic resins formed are subjected seal substrate.
Injecting a less than full amount of the filler into the transparent bottomed cylinder, and then inserting the core into the cylinder, the filler fills the entire length of the outer peripheral surface of the core. A method of manufacturing a seal stamp base material, wherein the filler is further poured into the cylinder until it is full.

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