JPS5892588A - Method and device for bottom dyeing embossing of sheet shaped material - Google Patents

Abstract

PURPOSE:To make it possible to print colorful complicated patterns at the bottom parts of embossed patterns, by transferring printing ink, which is applied to the surface of letter presses bonded to the outer surface of plate cylinder rolls, to an embossing roll, and performing the embossing treatment. CONSTITUTION:The letter presses 2 and 2' are bonded to the outer surfaces of the plate cylinder rolls 3 and 3', and the printing ink, which is applied on the surfaces of the letter presses, is transferred to the surface of the embossing roll 1. The embossing treatment of the surface of a synthetic resin sheet 7 is performed by the embossing roll 1. In addition to the concave and convex grain patterns formed by the embossing roll 1, the colorful patterns corresponding to the colors and patterns of the letter presses 2 and 2' of the plate cylinder rolls 3 and 3' are formed at the bottom parts of the concave and convex grain patterns. In this method, the bottom dyed embossed patterns having a light animated tone, shaded patterns, or watermarked patterns can be simply formed.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and an apparatus for embossing sheet-like materials, and the present invention relates to a method and an apparatus for embossing sheet-like materials, and the present invention relates to a method and an apparatus for embossing sheet-like materials, and the present invention relates to a method for embossing sheet-like materials, and the present invention relates to a method for embossing sheet-like materials, and the present invention relates to a method for embossing sheet-like materials, and the present invention relates to a method for embossing sheet-like materials, and the present invention relates to a method for embossing sheet-like materials, and the present invention relates to a method for embossing sheet-like materials, and the present invention relates to a method for embossing sheet-like materials, and the present invention relates to a method for embossing sheet-like materials, and the present invention relates to a method for embossing sheet-like materials, and the present invention relates to a method for embossing sheet-like materials, and the present invention relates to a method for embossing sheet-like materials, and the present invention relates to a method for embossing sheet-like materials, and the present invention relates to a method and an apparatus for embossing sheet-like materials. The object of the present invention is to provide a method and apparatus for embossing a valley dyeing sheet material, which allows a three-dimensional valley dye emboss pattern to be easily imparted to materials, etc., and in which the color, pattern, etc. of the valley dye pattern can be easily changed. be.

Metallic embossing rolls (hereinafter referred to as embossing rolls) that are conventionally engraved or etched with any elaborate design.
A valley-dye embossing method for synthetic resin sheets, etc., in which coloring is applied to the convex portions using a gravure printing method, and at the same time, continuous rotary printing is performed on the printing material is known.

However, the conventional valley dyeing embossing method is a rotary printing method that reproduces elaborate and beautiful designs by coloring the entire convex part of the embossing roll, so it is easy to arbitrarily and easily create designs by providing uncolored or different colored parts. It cannot be changed and is suitable for manufacturing products with large quantities and heavy designs, but this requires expensive embossing rolls for each pattern and the need to replace huge, heavy embossing rolls. This method requires a great deal of labor and time, resulting in poor productivity, and is not suitable for manufacturing products with a wide variety of products in small quantities and with clever designs.

In addition, in the field of interior decoration materials such as wall covering materials using synthetic resin sheets, etc., as housing environments and design tastes diversify, increasingly expensive and intricate designs are required. The popularity of inexpensive decorative materials that have light and stylish designs with patterns and watermarks and that can be easily changed to suit changing tastes is increasing, but while some with flat printed patterns can be found here and there, three-dimensional decorative materials are becoming popular. There was no one with a valley-dyed embossed look.

The inventors of the present invention have focused on the technical background and social needs as described above, and as a result of intensive research, have created a design as described in the claims.

It is easy to change the color, and it is possible to obtain a sheet-like product with beautiful valley-dyed printing, such as a soft anime style, a hidden pattern style, or a watermark style.

The drawings show one embodiment of the present invention, and the present invention will now be described with reference to the illustrated example.

An embossing roll 1 is rotating in the direction of the arrow in the figure, and an embossed pattern is formed on the outer peripheral surface of the embossing roll 1 by engraving or etching. Copper rolls 3° 31 to which letterpress plates 2 and 2' made of soft rubber or plastic are attached with adhesive are rotating in contact with each other, and furthermore, the letterpress plates 2 and 2' of the copper plate rolls 3 and 3' are respectively coated. The mesh rolls 4, 4' are rotating in contact with each other, and the mesh roll 4.4' is ink with printing ink A in the ink bat 5.5'.
They each rotate in contact with a raising roll 6,6' which is partially immersed in B.

On the surfaces of the letterpress plates 2 and 2', flat patterns different from the concavo-convex texture pattern engraved on the embossing roll 1 are engraved by engraving, press working, or the like.

In the illustrated example, the embossing roll 1 has two copper plate rolls 3, 3.
' is attached, but the present invention is not limited to the illustrated example; 51 plate copper rolls may be used, three or more may be attached, and engraved rubber rolls may also be used.

Next, to explain the valley-dyed embossing method when a synthetic resin sheet is used as a sheet-like object using an illustrated example, the synthetic resin sheet 7 is heated in a heating device 8, the surface of which is softened by heat, and then rotated. The embossing roll 1 is inserted between the nip between the embossing roll 1 that is rotating and the press roll 9 that is rotating in contact with the embossing roll 1.

The sheet material used in the present invention may be paper or various heat-softening synthetic resin sheets such as vinyl chloride or polyethylene, and may be foamed or non-foamed. , a base material such as a single-knit non-woven fabric may be attached.

The heating conditions in the heating device 8 and the linear speed of the synthetic resin seeds can be appropriately selected depending on the type of resin of the synthetic resin sheet, etc., but for vinyl chloride sheets, the heating conditions are approximately 200°C, 10 to 15 seconds, Is speed. Processed at 6-15 m/min.

On the other hand, the embossing roll 1 has an ink pad 5.5'
The printing ink A is lifted up by the lifting roll 6.6'.
, B transfers to the mesh roll 4.4', and after scraping off excess ink with a doctor knife 10.10', the outer periphery of the copper plate roll 3.3' rotating in contact with the mesh roll 4.4'. Transferred onto the surface of the relief plates 2, 2', and further transferred from the relief plates 2, 2' to predetermined portions of the convex portions of the negative plate formed on the surface of the embossing roll 1 rotating in contact with the relief plates 2, 2'. be done. However, in carrying out the present invention, the raising roll 6.6' and the knife 10.10
' can be omitted and the printing ink can be applied directly from the ink pad 5.5' to the mesh roll 4.4'.

The printing inks A and B used in the present invention are those normally used for gravure printing of synthetic resins, etc., and generally solvent paints for gravure printing using synthetic resin as a vehicle are used.

As described above, the printing inks A and B applied to the convex portions of the embossing roll 1 are printed on the surface of the synthetic resin sheet 7 that is inserted between the nip between the embossing roll 1 and the press whirl 9. In this case, the surface of the synthetic resin sheet 7 has been thermally softened by the heating device 8, and is strongly pressed against the outer peripheral surface of the embossing roll 1 by the press roll 9, so that the convex portions of the embossing roll 1 are made of synthetic resin. At the same time as printing plate 2, 2 is bitten into plate 7, printing inks A and B printed on the convex portions are adhered to the outer circumferential surface of copper plate roll 3.3'.
A valley-dyed embossed pattern printed in the concave portions of the synthetic resin sheet 7 is formed as a color and pattern corresponding to the color pattern '.

That is, the synthetic resin sheet obtained according to the present invention has not only the textured pattern formed by the roll 1 but also the colors and patterns of the letterpress plates 2 and 2' of the copper plate rolls 3 and 3' on the four parts of the textured pattern. Colors and patterns corresponding to the above can be formed, and therefore, a light anime-like, hidden pattern, or watermark-like valley-dyed embossed pattern can be easily formed.

Since the synthetic resin sheet obtained by the above method is embossed with valley dyeing, the convex parts on the surface of the synthetic resin sheet are not colored and are the color of the base material. By applying a light coloring process such as staining, it is possible to create even more diverse color patterns.

In addition, the relief plates 2, 2' bonded to the outer circumferential surfaces of the copper plate rolls 3, 3' can be easily removed and replaced with those with another pattern, one color, etc. By attaching a copper plate roll with letterpress affixed to its outer circumferential surface and transferring the printing ink □ onto the embossing roll, it is possible to easily form valley-dyed embossments with a wide variety of variations.By simply modifying a conventional embossing machine, The present invention can be achieved.

Therefore, depending on the demand or preference for products such as wall covering materials for interior decoration or interior materials for vehicles such as automobiles, we can easily and quickly respond to both small-variety mass production as well as high-mix low-volume production. It is possible to obtain embossed products.

As described above, the present invention makes it possible to easily apply valley dyeing and embossing to sheet-like materials, and by combining one or more of the colors, patterns, etc. at that time, the valleys of the embossed pattern can be colored in a variety of colors. Not only can complex patterns be printed and valley-dyed embossments such as light anime style, IIL pattern, or watermark pattern not previously seen can be applied, but the color and pattern of the valley-dyed pattern can be easily changed. It can quickly respond to the diversification of social needs, and has great industrial benefits.

[Brief explanation of drawings]

The drawings are explanatory diagrams of one embodiment of the present invention. 1: Emboss roll, 2e 2': Letterpress, 3.3':
Copper plate roll, 4.41m mesh roll, 5°5': Ink bat, 6#6': Raising roll, 7: Synthetic resin sheet, 8: Heating device, 9: Press roll, 10.10'
:Doctor knife. Patent applicant Kyowa Reso Co., Ltd. Agent Rikichi Kawa

Claims (1)

[Claims] 1. A flexible female with an arbitrary pattern engraved on the outer peripheral surface of the copper plate roll.
A sheet-like article characterized in that a letterpress made of rubber or plastic is adhered, and after the printing ink applied to the surface of the letterpress is transferred to the surface of an embossing roll, the surface of the synthetic resin sheet is embossed with the embossing roll. Valley dye embossing method. 2. A plate in which a pressure roll is closely attached to one side of the outer peripheral surface of the embossing roll, and a letterpress is adhered to the outer peripheral surface of the roll on the other side of the outer peripheral surface of the embossing roll. one or more of the copper rolls are closely attached, and a mensch roll is attached closely to the letterpress surface to which the plate copper row is adhered to the outer peripheral surface; the embossing roll; Pressure 0IP-ke The copper plate roll and the mesh roll can be rotated closely together at the same linear speed. 1 The printing ink applied to the outer peripheral surface of the mesh roll passes through the letterpress on the outer peripheral surface of the copper plate roll to the embossing roll. While being transferred to the convex portion of the outer peripheral surface,
1. A valley-dye embossing device for sheet-like material, characterized in that it is configured to be able to print on a sheet-like material inserted between a nip between a pressure roll and an embossing roll.