JPH1071526A - Embossing roller for paper roll and its forming method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the cost of a device for forming a finished product having a complicated ornament pattern by fabricating a roller for embossing a paper roll composed of a first stage which forms a series of projections and a second stage which forms a pattern or a design including at least partial removal of a prescribed number of projections. SOLUTION: An embossing roller 1 is composed of two embossing rollers whose embossing faces are attached in such a state as to being in contact with projections opposed to respective rollers by two parallel shafts. The embossing roller 1 directly moves a series of uniform projections 3 to a first stage which forms them by machining and a second stage which selectively executes a finishing work or forms an ornament pattern or a design 5 composed of at least partial removal of a prescribed number of projections. The projections 3 can be reproduced into another roller by a numerical controller by a symmetric method so that many kinds of deformation and correction are facilitated and the details can be replaced with similar elements technologically.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for forming a roller, in particular, a roller for embossing a wrapping paper of textiles such as kitchen paper and toilet paper.

[0002]

2. Description of the Related Art For example, a paper embossing apparatus for producing a composite kitchen paper roll composed of two sheets is composed of two embossing rollers. Each roller has a series of protrusions arranged in parallel rows and cooperates with a respective pressing roller for embossing each paper sheet.

In order to join two embossed sheets, the embossing rollers are arranged close together by matching their embossing locations. One of the two embossing rollers is coated with an adhesive to adhere the two sheets together.

The protrusions of the embossing roller are formed by machining or by chemical etching, so that the sheet has a series of inwardly directed parallel points, ie, a sheet of sheets facing each other. Uniform stippling constituted by parallel rows on the surface is formed.

[0005]

However, an advantageous condition for a stable combination of the two sheets is that the largest possible number of protrusions on a single sheet besides that of ensuring a wide attachment surface. Is to match with the projection of the sheet.
Alternatively, in a staggered arrangement, the protrusions on one sheet must correspond to the spacing between the protrusions on the other sheet.

GB-A-2166690 discloses an embossing process for making embossed paper sheets such as towels, wherein the embossed pattern is arranged in such a way that almost all main axes of the embossed pattern intersect the machine. Consists of an embossed pattern having a major axis and a minor axis.

[0007] WO-A-93 / 25383 discloses a chemically etched, paper stamping module pattern roll made by assembling discrete components rather than as one piece. . While this structure is advantageous, it is complex and expensive.

[0008]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method and apparatus for manufacturing rollers, and in particular, rollers for embossing wrapping paper, capable of forming complex decorative patterns in finished products. is there.

[0009] It is an object of the present invention to provide a method and apparatus which, from a manufacturing point of view, is considerably less costly than conventional approaches.

It is another object of the present invention to provide a method and apparatus for fabricating a variety of complex decorative patterns and designs in accordance with the present invention, but with a very high degree of precision and duplication, even for mirror symmetric duplications on multiple rollers. It is to be.

[0011] These and other objects which will become apparent in the following description are a first step of forming a series of projections, making a roller, in particular a roller for embossing wrapping paper, and at least a certain number of projections. A second step of shaping the pattern or design including partial removal.

[0012] Other features and advantages will be apparent from the preferred but non-limiting embodiments of the present invention, as illustrated in the accompanying drawings.

[0013]

DETAILED DESCRIPTION OF THE INVENTION The embossing roller according to the present invention comprises:
It is generally designated by the reference numeral 1 and is suitable for use in many conventional machines for embossing paper, a type of machine in which the embossing surface of two rollers is
It consists of two embossed rollers mounted on parallel axes so as to make contact at the location of the 0 facing projections.

In a manner known per se, each embossing roller cooperates with each embossing roller made of rubber or other elastic material to emboss the wrapper. In practice, the two wrappers are fed to a first and second set of embossing and pressing rollers, respectively, for embossing. When embossed,
The two wrappers are joined on the contact line of the two embossing rollers to obtain a double wrapper.

According to the invention, the embossing roller is manufactured in a first stage in which a series of uniform projections 3 are formed, for example by machining. It is possible to carry out the finishing operation selectively, or to go directly to the second stage of shaping the decorative pattern or design 5, consisting of at least partial removal of a certain number of projections.

The protrusions are advantageously removed by a numerical controller, for example a milling machine. This allows each decorative pattern or design to be replicated on another roller, even in a symmetrical way. Indeed, it is very important to match the many facing points of the protrusions of the two rollers in order to ensure a good lamination of the double wrapper.

In fact, by forming a symmetrically identical design on the two embossing rollers, all the points on one roller coincide with all the points on the other roller, and the lamination between the two wrapping webs Make sure the spots are maximized.

It has been observed in practice that the present invention achieves its intended purpose and goals, and this method has produced the formation of embossed rollers in very complex decorative patterns.

The method according to the invention is amenable to many variations and modifications, many of which are within the scope of the appended claims. All details can be replaced by technically equivalent elements.

For example, the above steps can be performed in reverse order.

The materials and dimensions used are, of course, all according to the requirements and the state of the art.

[Brief description of the drawings]

FIG. 1 is a schematic view of an embossing roller according to the present invention.

FIG. 2 is an enlarged partial view of a portion of a roller surface according to the present invention.

[Explanation of symbols]

 1 embossing roller 3 protrusion 5 decorative pattern or design

[Procedure amendment]

[Submission date] April 14, 1997

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Name of invention

[Correction method] Change

[Correction contents]

Patent application title: Embossing roller for wrapping paper and method of forming the same

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0001

[Correction method] Change

[Correction contents]

[0001]

TECHNICAL FIELD The present invention relates to a roller, and more particularly, to a roller for embossing a wrapping paper of textiles such as kitchen paper and toilet paper, and a roller thereof.
It relates to a molding method .

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0006

[Correction method] Change

[Correction contents]

[0006] GB-A-2166690 discloses an embossing to produce the embossed paper sheet such as a towel, this sheet is, almost all of the major axis of the embossed pattern is arranged in a direction intersecting with the machine It has an embossed pattern having a main axis and a sub-axis.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0008

[Correction method] Change

[Correction contents]

[0008]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a roller, and more particularly, a roller for embossing wrapping paper, capable of forming a complicated decorative pattern into a finished product, and a method of forming the same. That is.

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0021

[Correction method] Change

[Correction contents]

[0021] The materials used and the dimensions, Needless to say, due to the current state of all the requirements and technology.

Claims (11)

[Claims] 1. A method for forming a roller for embossing wrapping paper, comprising a first step of forming a series of protrusions and a second step comprising at least partial removal of a certain number of said protrusions. 2. The method according to claim 1, wherein said first step of forming said series of projections comprises a machining operation.
Molding method. 3. The method according to claim 1, wherein said first step of forming said series of protrusions comprises a chemical treatment. 4. The method of claim 1, wherein a finishing operation follows the first step of forming the series of protrusions. 5. The method according to claim 1, wherein the second step of forming a pattern or design including at least partial removal of a certain number of the protrusions is performed by a numerical controller. 6. The method according to claim 1, wherein said second step of forming a pattern or design including at least partial removal of said number of protrusions is performed by a knurling machine. 7. The molding method according to claim 5, wherein the numerical controller is a milling machine. 8. A roll for embossing wrapping paper, comprising a series of projections distributed on a cylindrical surface and a pattern formed by at least partially removing some of said projections. Molding method. 9. A method comprising the steps of embossing rollers, each comprising a series of protrusions distributed on the surface of the rollers and a pattern formed by at least partial removal of some of said protrusions. Embossing device for wrapping paper. 10. The apparatus according to claim 9, comprising two opposing rollers, one of said rollers comprising a pattern which is symmetrically identical to the other roller design. 11. A mold, comprising: a two-ply embossed to form a series of inwardly directed projections; and a pattern molded in areas where said raised portions do not appear. Pressed paper.