JP2006320528A - Method for attaching decoration to leather and its jig - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for attaching decorations, such as crystal glass, noble metals or the like, to leather, and a jig which is convenient for the method. <P>SOLUTION: Positions of a plurality of marks of a design sheet on which design is drawn with the plurality of marks are marked on the surface of a water resistant layer of leather which has the water resistant layer 9 on the surface of a leather main body 8, then, a processing bar with a file-like leading front is put on the water resistant layer and the processing bar is rotated to remove the water resistant layer locally and make a plurality of concave portions 20 which are exposed from the surface of the leather main body, then, decorations 22 which have heat-sealing adhesive layer 23 in the rear face are fit into the concave portions from the heat-sealing adhesive layer side, the decoration is heated and pressed to the leather main body side and then cooled. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a method of attaching a decorative body such as crystal glass or precious stone to leather bags, clothes, shoes, etc., and particularly to a jig useful for this method.

  Conventionally, leather bags, clothes and shoes with small crystal glass or precious stones attached as decorations are commercially available. However, the leather used in these products is structured so that the surface of the leather body is covered with a waterproof layer such as a silicon sheet or a Teflon sheet so that water does not enter the leather body even if it gets wet a little. . When a decorative body such as crystal glass is attached to such leather with a heat-fusible adhesive, the decorative body will be bonded to the waterproof layer. The body may come off the leather.

Therefore, in order to bond the decorative body to the leather more strongly, a decorative body with a heat-fusible adhesive applied on the back is placed on the surface of the leather, and ultrasonic vibration is applied to the decorative body to heat it. Japanese Patent Laid-Open No. 2002-249729 proposes a method in which the waterproof layer on the surface is removed by heat and the decorative body is directly bonded to the leather body.
JP 2002-249729 A

  However, in the method described in the above publication, the heating temperature by ultrasonic vibration is assumed to be 200 ° C. or less, and at such a temperature, the waterproof layer is removed if it is a silicon sheet or a Teflon sheet. Since this cannot be done, the decorative body is still adhered to the surface of the waterproof layer. However, it is considered that it can be put to practical use for leather using a wax that volatilizes at a temperature of 200 ° C. or less as a waterproof layer.

  Therefore, an object of the present invention is to provide a method and jig capable of firmly adhering a decorative body to a leather having a waterproof layer such as a silicon sheet or a Teflon sheet.

  The method of attaching the decorative body to leather according to the present invention is the method of attaching the position of the plurality of marks on the design sheet on which the design is drawn by a plurality of marks, to the surface of the waterproof layer of leather having a waterproof layer on the surface of the leather body. The processing bar having a filed tip is applied to the mark on the waterproof layer, the processing bar is rotated, the waterproof layer is locally removed, and the surface of the leather body is exposed. A plurality of recesses are formed, and in these recesses, a decorative body provided with a heat-fusible adhesive layer on the back surface is fitted from the heat-fusible adhesive layer side, and the decorative body is heated and the leather body side is heated. It is characterized by pressurizing and then cooling.

Further, a small hole is provided in each of a plurality of mark portions of the design sheet, the design sheet is applied to the waterproof layer of the leather, and the position of the mark is marked on the waterproof layer through the small hole.
In addition, a plurality of decorative bodies are bonded to the long adhesive tape in a row on the opposite surface of the heat-fusible adhesive layer, and the decorative body is bonded to the adhesive tape, and one decorative body is formed on the concave portion. The tip of the ultrasonic generator is brought into contact with the decorative body through the adhesive tape.

  Furthermore, the jig used for attaching the decorative body to leather inserts a slide bar urged away from the handle into the hollow part of the handle, forms a spiral groove in the slide bar, and The projecting piece of the inner wall of the hollow portion is fitted, and a processing rod having a file-shaped tip is removably attached to the tip of the slide rod.

According to the method for attaching the decorative body to leather according to the present invention, the waterproof layer of the portion of the leather to which the decorative body is attached is removed in advance with a jig, and then the decorative body is attached to the removed recess with a hot-melt adhesive. Since the decorative body is directly bonded to the leather body, it is firmly fixed and does not easily peel off.
In addition, the position of the mark that is a component of the design is marked through a small hole provided in the design sheet, so that the design can be accurately copied to the leather.

In addition, the decorative bodies were bonded to the long adhesive tape in a row and adhered to the surface opposite to the adhesive layer, and the decorative bodies were fitted into the leather recesses one by one with the decorative body attached to the adhesive tape. So work efficiency is improved.
Furthermore, as a jig to remove the waterproof layer, grip the handle and press it against the leather, and when the handle is pushed down downward, the processed rod with a filed tip rotates to remove the waterproof layer of the leather locally. Work efficiency is good.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
As shown in FIG. 1, first, a first design sheet 3 describing a design 2 such as “MSK” constituted by a large number of marks 1 such as circles is prepared. The design sheet 3 may be either transparent paper or opaque paper.
The first design sheet 3 is copied to create a second design sheet 4 shown in FIG. A small hole 5 is formed in the center of a large number of marks 1 which are constituent elements of the design of the second design sheet 4. The second design sheet 4 is overlaid on the leather surface, and a mark indicating the position of the mark 1 is put on the leather surface through the small holes 5. FIG. 3 shows a state in which a mark 7 is attached to the surface of the leather 6. The mark 7 may be marked with a pencil or black ink, or may be marked with a cone. In the case of using a cone, the small hole 5 may not be provided. However, since the mark 7 due to scissors is difficult to recognize, it is preferable to provide the small hole 5 and provide a clear mark with a pencil or the like.

The leather 6 with the mark 7 is processed using a jig shown in FIGS. As shown in FIG. 8, the leather is formed by integrating a waterproof body 9 made of a silicon sheet, a Teflon sheet or the like on the leather body 8.
As shown in FIGS. 6 and 7, the jig inserts a metal slide shaft 12 into the hollow portion 11 of the handle 10. A spiral groove 13 is formed around the slide shaft 12, and a projecting piece 14 protruding from the inner wall of the hollow portion 11 of the handle 10 is fitted in the spiral groove 13. The slide shaft 12 is biased in a direction away from the handle 10 by a spring body 15 inserted into the hollow portion 11 of the handle 10. A screw portion 15 divided into two forks is provided at the tip of the slide shaft 12, the screw portion 15 is hollow, and a processing bar 16 is inserted therein, and the processing bar 16 is firmly fixed by a nut 17 to the tip of the slide shaft 12. It is fixed to the part.

  The tip of the processing bar 16 is planar, and a plurality of short (0.2 to 0.5 mm) protrusions 18 are formed as shown in FIG. 7a. Alternatively, a plurality of grooves 19 may be provided as shown in FIG. 7b. In short, it may be a file-like surface. A plurality of types of diameters of the tip of the processing bar 16 are prepared according to the size of a decorative body such as crystal glass attached to the leather 6. Since many decorative bodies have a size of about 1 to 10 mm, it is sufficient to prepare a decorative body within this range. Since the processing rod 16 can be freely attached and detached by loosening the nut 17 at the tip of the jig, the processing rod 16 can be replaced as necessary.

  When the processing bar 16 is pressed against the leather 6 and the handle 10 is pressed downward so that the mark 7 is at the center of the processing bar 16 as shown in FIG. The projecting piece 14 moves in the spiral groove 13 of the shaft 12, and as a result, the slide shaft 12 rotates. When this is repeated several times, a concave portion 20 shown in FIG. 8 is formed. That is, the waterproof layer 9 is locally removed at the recess 20. The black part shown in FIG. 4 is the recessed part 20, and is processed into the shape of 2 designs.

  As shown in FIG. 9, decorative bodies 22 made of crystal glass, precious stones, or the like are arranged in a row and bonded to a long adhesive sheet 21 having elasticity. The bonding direction is such that the front surface of the decorative body 22 is bonded to the pressure-sensitive adhesive sheet 21 and the hot-melt adhesive layer 23 provided on the back surface of the decorative body 22 is positioned away from the pressure-sensitive adhesive sheet 21. That is, bonding is performed on the surface opposite to the hot-melt adhesive layer 23.

  As shown in FIG. 9, the heat-meltable adhesive layer 23 of the decorative body 22 adhered to the pressure-sensitive adhesive sheet 21 is disposed facing the concave portion 20 of the leather 6, and the heat-meltable adhesive layer 23 is fitted into the concave portion 20 to The tip 25 of the ultrasonic generator 24 is pressed from above the sheet 21. Then, the decorative body 22 vibrates and heat is generated, the heat-meltable adhesive layer 23 melts and soaks into the inside of the leather body 8, and the leather body 9 and the decorative body 22 are directly bonded when cooled. When an ultrasonic wave is applied from the ultrasonic generator 24 to the decorative body 22 and heated, simultaneously, the ultrasonic generator 24 is pressed to apply pressure to the decorative body 22. That is, the decorative body 22 is thermocompression bonded to the leather body 8.

The ultrasonic generator 24 is generally used and may be generated for about 1 to 3 seconds depending on the size of the decorative body 22. Cooling may be natural cooling, or may be quickly cooled by placing a wet towel. Since the decorative bodies 22 are bonded to the adhesive sheet 21 in a line, the decorative bodies 22 may be sequentially put into the recesses 20 and bonded.
As described above, the waterproof layer 9 of the leather 6 where the decorative body 22 is attached is removed in advance by a jig, and then the decorative body 22 is attached to the removed recess 20 with a hot-melt adhesive. The body 22 is firmly fixed to the leather body 8 and does not easily peel off.

The heating need not be ultrasonic, and an iron may be used.
Further, the leather 6 may be a synthetic leather in which a waterproof layer is bonded to a synthetic fiber, in addition to a leather provided with a waterproof layer on the surface of natural leather. In addition, artificial leather provided by spraying or coating a waterproof layer on a nonwoven fabric such as nylon or polyester may be used.

  INDUSTRIAL APPLICABILITY The present invention is useful when attaching decorative bodies such as crystal glass and precious stones to leather products such as leather bags, clothes and shoes.

It is a top view of the 1st design sheet for demonstrating the method of attaching the decoration body in one Example of this invention to leather. It is a top view of the 2nd design sheet. It is a top view of the leather which copied the position of the design. It is a top view of the leather which processed the position of the design. It is a top view of the leather which attached the same decorative body. It is a cutaway front view of the jig | tool used when implementing the same method. a and b are perspective views of a tip end portion of a processing rod of the jig. It is a partially broken perspective view which shows the state which is implementing the method. It is a principal part sectional side view which shows another state which is implementing the method.

Explanation of symbols

1: Mark 2: Design 3: First design sheet 4: Second design sheet 5: Small hole 6: Leather 7: Mark 8: Leather body 9: Waterproof layer 10: Handle 11: Hollow part 12: Slide shaft 13: Spiral Groove 14: Projection piece 15: Screw part 16: Processing rod 17: Nut 18: Projection 19: Groove 20: Recess 21: Adhesive sheet 22: Decoration body 23: Hot-melt adhesive layer 24: Ultrasonic generator 25: Tip Part

Claims (4)

  A process in which the positions of the plurality of marks on the design sheet on which the design is drawn by a plurality of marks are marked on the surface of the waterproof layer of the leather having a waterproof layer on the surface of the leather body, and the tip has a file shape A stick is applied to the mark on the waterproof layer, the processed stick is rotated, and the waterproof layer is locally removed to form a plurality of recesses in which the surface of the leather body is exposed. A decorative body provided with a heat-fusible adhesive layer is fitted from the heat-fusible adhesive layer side, the decorative body is heated, pressurized to the leather body side, and then cooled. How to install on leather.   A small hole is provided in each of a plurality of mark portions of the design sheet, the design sheet is applied to the waterproof layer of the leather, and the position of the mark is marked on the waterproof layer through the small hole. Installation method of the decorative body to leather.   A plurality of decorative bodies are bonded to the long adhesive tape in a row on the opposite surface of the heat-fusible adhesive layer, and one decorative body is fitted into the recess while the decorative body is bonded to the adhesive tape. 2. The method for attaching a decorative body to leather according to claim 1, wherein the tip of the ultrasonic generator is brought into contact with the decorative body through the dent and the adhesive tape.   Insert a slide rod biased away from the handle into the hollow portion of the handle, form a spiral groove in this slide rod, fit the protruding piece of the inner wall of the hollow portion into this spiral groove, and attach it to the tip of the slide rod The jig used for the method of attaching a decorative body to leather according to claim 1, wherein a processing rod having a file-shaped tip is detachably attached.

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