JP4114907B2 - Plastic processing method of natural leather print - Google Patents

Description

[0001]
[Industrial application fields]
The present invention is a leather interior in which natural leather is patterned with a method such as transfer printing, silk screen printing, ink jet printing, etc., simultaneously with relief three-dimensional (embossing) processing. Product and stationery accessories, or shoes, leather clothes, bags (bags, wallets, etc.), and other leather (leather) products. It is related to high three-dimensional decoration.
[0002]
[Prior art]
Conventionally, as a method of embossing the surface of leather by applying patterns and colors, hand-painting using acrylic paint or dye on the surface of the leather and hand-decorating a single item using a tool Using a metal or wooden stamp that has been embossed or reverse-carved with hand-carved decorations, softened by moistening the leather with moisture, and then pressing it onto the surface of the leather with pressing force. In addition, there are methods such as handwriting using acrylic paints and dyes.
[0003]
In addition, as a three-dimensional (embossing) processing method, inventions such as Japanese Patent Laid-Open Nos. 01-232990, 05-31267, 07-05960, 07-138600, and 2000-104100 are disclosed. It has been known.
[0004]
In addition to various three-dimensional (embossing) processing as a technology to create three-dimensional decorated leather products, patterns and three-dimensionalization are morphological despite the establishment of technology to add designs and decorations to the leather surface by transfer printing. In addition, leather processing technology that is fused with printing and molding technology has not been established. In other words, select the part to be processed according to the pattern painting method and plastic processing, the production of a solid (embossed) mold integrated with the sketch, plastic processing by moistening and softening the leather and the pattern and decoration Based on digitized sketch data as a painting method, decoration by transfer print, silk screen print, ink jet print, etc. is practically applied by the transfer print of patent 3069064 which is the right of the applicant. However, no technology has been established to create a decorative and high-quality leather product by integrating patterning and three-dimensionalization.
[0005]
[Problems to be solved by the invention]
Therefore, the present invention applies a pattern by transfer printing, silk screen printing, inkjet printing, etc. to the leather based on digital image data, and integrates this patterning and three-dimensionalization to make it decorative and highly shaped. It is intended to establish technology for making leather products.
[0006]
[Means for Solving the Problems]
Therefore, the present invention applies a pattern by transfer printing, silk screen printing, inkjet printing, etc. to the leather based on digital image data, and integrates this patterning and three-dimensionalization to make it decorative and highly shaped. It is intended to establish technology for making leather products. More specifically, based on the digitized 2D image (file format is image file, vectorized file), the vertical (horizontal) axis ( X, Y points) points, lines, and surfaces of the image (image outline) , Arbitrarily define the height ( Z axis), create a mold, this point point ( X, Y coordinate) and 2D image can be matched with the coordinate axis (the original is the same), so the 2D print image is part Or the whole can be three-dimensionalized, mass-produced, standardized, and solved.
[0007]
First, as an example, when a leather pattern is formed by transfer print printing of a thermoplastic polyurethane resin transfer sheet based on a two-dimensional image as a rough sketch, and the leather is plastically processed into a three-dimensional (embossed) shape, the same rough sketch is used. As digital images, it is used as CAD data using CAD software for computers, and it is selectively used according to the pattern or pattern when producing a three-dimensional (embossed) mold or plasticizing by moistening and softening leather. It is a dense plastic working that is integrated with patterning such as plasticizing.
[0008]
【Example】
The manufacturing process will be described with reference to FIG. 1. First, transfer sheet processing 2 based on digital image data 1 obtained by computer processing of photographs, illustrations, pictures, characters, etc., transfer print processing 3 to leather 10, humidification softening processing 6 The three-dimensional mold 5 for three-dimensional (embossing) processing is performed based on the CAD data 4 based on the same image data 1, and the three-dimensional mold obtained by the three-dimensional mold 5 is applied to the leather 10 subjected to the humidification softening process 6. A three-dimensional molding process 7 and a drying (fixing) process 8 are performed to integrate the decoration and the three-dimensional (embossing) process, and a leather product 9 having a high decorativeness and a high degree of modeling can be obtained.
[0008]
As another embodiment, referring to FIG. 2, CAD data 4 is created on the basis of digital image data 1 obtained by computer processing of pictures, illustrations, pictures, characters, etc. as a background, thereby enabling upper mold (male) or The lower mold (female mold) and other leather molds are manufactured 3D, while the leather 10 is humidified and softened 6 and the leather 10 is embossed by the 3D mold obtained by the previous 3D mold 5 Three-dimensional molding processing 7 (plastic molding) is performed on the shape, and drying (fixation) processing 8 is performed. Then, a fine decoration is printed on the leather 10 based on the image data 1 using an inkjet printer 12. A leather product 9 decorated in three dimensions is made.
[0009]
As another embodiment, as shown in FIG. 3, first, a picture, an illustration, a picture, an image to be a sketch such as a character, etc. are made based on the digital image data 1, a positive film, a plate making process 12 for silk screen printing, and a leather 10. Silk screen printing 13 and humidification softening processing 6 are performed, and then image CAD data 4 is used for three-dimensional mold manufacturing 5 for three-dimensional (embossing) processing, three-dimensional molding processing 7, drying (fixation) processing 8 After finishing painting and the like, silk screen printing and three-dimensional (embossing) integration are integrated, so that the decorative and high-quality leather product 9 can be processed.
[0010]
As shown in the manufacturing process of FIG. 3 described above, the present invention integrates decoration and three-dimensionalization into leather through digital image technology, printing technology, leather plastic processing technology, and drying and fixing technology. It was invented for the purpose of adding highly functional processing. In this case, decorative materials such as pictures, illustrations, designs, letters, etc. used as background pictures are used as digital images that have been processed by computer. CAD input works, scanning from scanners, digital camera images and video works, and DTP works that combine these works.
[0011]
The decoration method on the leather surface is suitable for printing or printing, such as transfer printing, ink jet printing, silk screen printing, etc. according to Japanese Patent No. 3069064, transfer film for transfer printing, and piezo type ink jet printer for ink jet printing. It is characterized by the fact that it is possible to make clear prints and prints with leather and ink that can follow elastic deformation in silk screen printing and handwriting. The transfer print to leather according to Japanese Patent No. 3069064 is characterized in that it can follow the property of the skin stretching due to humidification softening when transferring a picture-like design to the leather.
[0012]
Next, the plastic processing method of the leather is the plastic property that the leather becomes easy to stretch by wet softening, that is, after moistening the leather after finishing the skin of animals such as cattle, pigs, horses, deer, sheep, etc. In addition, if necessary, a solution obtained by diluting polyurethane resin, acrylic resin, polycarbonate resin, natural rubber latex, synthetic rubber latex, etc. in an aqueous solution is applied to the aqueous solution, or it is molded after being softened by immersion, and then fixed by drying. It features a molding method that utilizes the plastic properties of (embossed) leather.
[0013]
In addition, when plastic processing is performed on the printed or printed leather 10, it is necessary to refer to the background picture to determine how much deformation or unevenness is required in which portion, and based on the two-dimensional digital image data 1. It is necessary to select and assemble CAD software. For example, when three-dimensionalization is performed based on the image data 1, outline processing is performed on a portion of the image data 1 that is desired to be three-dimensionalized, clustered in several stages according to height, and CAD data 4 is generated. Similar to the decoration, by adopting the three-dimensional production linked to the CAD data 4 by the same digital image data 1, it is possible to process the leather product 9 in which the integration of decoration and formability is more precise.
[0014]
In addition to processing with molds, plastic crafting is also possible by using a three-dimensional surface print decoration or printing a decorative back mold on the back and attaching irregularities with a trowel or punch, etc. by hand processing. It can also be used for leather crafts.
[0015]
The three-dimensional mold manufacturing 5 linked with the CAD data 4 described above is a mold shown in FIGS. 4, 5, 6, 7 and the like, and by similarly processing and laminating paperboard and plastic plates. Cylinders, hemispheres, prismatic original shapes and molds are similar.
[0016]
Finishing of the plastic processing of the leather according to the present invention, that is, fixing with drying, as described above, at the stage of humidification and softening, in addition to wet softening with water, polyurethane resin, acrylic resin, polycarbonate resin, natural rubber latex, Applying or immersing a diluted solution of synthetic rubber latex, etc., moistening and softening, and then bonding and curing between the fibers along with drying and fixing. Also, a plastic resin such as polyurethane resin or silicone resin is applied to the concave portion on the back surface. There is a method by filling.
[0017]
As described above, the natural leather print plastic processing method provides a decorative and high-quality leather product in which patterning and three-dimensionalization are integrated by digital image technology, print technology, leather plastic processing technology, dry fixing technology. It is possible.
[0018]
Among the forming dies in the three-dimensional mold manufacturing 5 relating to the plastic working of the present invention, FIGS. 4, 5 and 6 show CAD data 4 as a pressing die (male type or female type) that performs three-dimensional (embossing) processing on leather. The upper mold (male mold) or lower mold (female mold) is made by using a plastic or metal plate cut out by an NC router (not shown) controlled by a computer and interlocked. Solid (embossed) processing is performed by pressing along the processed grooves and holes and by the opposite protrusions.
[0019]
In addition, among the molds in the three-dimensional mold manufacturing 5, the stamping mold according to FIG. 6 creates a mask sheet for sit blasting based on CAD data 4, and makes glass, cement board, stone board, etc. with predetermined projections and grooves by sit blasting, It is convenient to form the hole shape into a mold (female mold), and at this time, the pressure side is made of a rubber or plastic cushioning material.
[0020]
Furthermore, as in the inventions of JP-A-01-232990, JP-A-05-31267, JP-A-07-138600 and JP-A-2000-104100, natural leather craft, hand-carving, and engraving prototypes are molds, hard rubber molds, Use a hard resin mold, as shown in Fig. 7, use a vacuum forming mold, soften the leather with moisture or a resin-diluted aqueous solution treatment, and then suck the leather along with the mold to give a solid (embossed) shape. There are some that are dried and fixed and then removed from the mold to complete the molding process.
[0021]
【The invention's effect】
The present invention captures the original image into a computer as a digital image, and the surface decoration of the leather is made based on CAD data of the same image even when creating a pattern for digital printing or printing and creating a three-dimensional mold for processing. It is characterized by the fact that the pattern and the three-dimensional (embossed) shape are integrally formed by molding, so that the three-dimensional (embossed) processing uses a cutting die, vacuum forming die, laminated die, etc. The processing method can be appropriately selected depending on the size and form of the processed product. In other words, cut-out molds and laminated molds are used for simple and compact objects, and objects that are three-dimensionally deeply carved or densely shaped are used by using a vertically fitting mold or a vacuum mold. Matching three-dimensional (embossing) processing can be selected as appropriate, and it becomes possible to provide leather products that match the production lot and price.
[0022]
In addition, design and three-dimensional processing has been realized on the leather from the present invention. Conventionally, a single-colored leather decoration based on the leather background has been added with a detailed decoration processing with digital images, greatly enhancing the decorative expression of leather products. It can be applied to leather interior products and stationery accessories, shoes and bags, leather clothes, ornaments, leather crafts, etc., and has excellent effects not found in conventional products.
[Brief description of the drawings]
FIG. 1 is an explanatory view of a production process of a natural leather print plastic working method according to the present invention.
FIG. 2 is an explanatory view of a production process of a natural leather print plastic working method according to another embodiment of the present invention.
FIG. 3 is an explanatory view of a production process of a natural leather print plastic working method according to another embodiment of the present invention.
FIG. 4 is an explanatory view showing a cut-out female mold, a workpiece (leather), and a mechanism by pressure molding.
FIG. 5 is a perspective view showing a state of a cut-out female mold.
FIG. 6 is an explanatory view showing a forming mechanism using a cutout female die, a workpiece and a pressure backing material using a cushioning material.
FIG. 7 is an explanatory view showing a vacuum forming male mold, a workpiece, and a mechanism by air suction molding.
[Explanation of symbols]
1 is image data.
2 is a transfer sheet processing.
3 is a transfer printing process.
4 is CAD data.
5 is three-dimensional production.
6 is humidified softening treatment.
7 is a three-dimensional molding process.
8 is a drying process.
9 is a leather product.
10 is leather.
11 is a print process.
12 is a plate making process.
13 is silk screen printing.

Claims (1)

 Creates CAD data based on digital image data obtained by computer processing of photographs, illustrations, pictures, characters, etc., and creates a three-dimensional mold for three-dimensional (embossing) processing based on this CAD data. Before or after the three-dimensional molding process, the leather is subjected to a patterning process for printing an image by means of transfer printing, silk screen printing or ink jet printing based on the same digital image data as described above. A natural leather print plastic processing method that integrates patterning and three-dimensionalization by three-dimensional molding corresponding to this patterning.

Images