JP2008295832A - Roll paper - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enhance the aesthetic property in an end face of roll paper. <P>SOLUTION: Regular geometric patterns are printed in a prescribed range including the side edges of paper of the roll paper. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to roll paper such as kitchen paper and toilet paper.

Rolled toilet paper (hereinafter referred to as “toilet roll”) on which a pattern such as a flower pattern is printed has a visual effect such as improving the interior of the toilet.
JP 2003-265353 A JP 2006-136499 A

However, this type of conventional product has an end surface (mirror surface) due to a manufacturing method in which a long roll formed by winding a wide strip of continuous base paper on which a pattern is printed is cut into an appropriate size to make an individual toilet roll. Is an irregular marble pattern, and the design of the surface is not preferable. In particular, a pattern on which multicolor printing is performed is a marble pattern in which a plurality of colors are irregularly mixed and disordered, and is not particularly preferable in terms of design.
Such a lack of specular design of the mirror surface is a factor that hinders the appeal of the product because such products are generally packaged in a transparent resin bag and marketed.
Then, the main subject of this invention is providing not only a surrounding surface (body surface) but the roll paper which has the designability also on an end surface (mirror surface).

The present invention that has solved the above-described problems and the effects thereof are as follows.
<Invention of Claim 1>
A cylindrical roll paper in which a strip-shaped continuous paper having a pattern is wound,
The end surface is a non-patterned colored surface, a colored surface in which lines or dots are arranged substantially uniformly, or a regular patterned surface, in which a portion related to the side edge of the continuous paper pattern is exposed. Roll paper characterized by.

<Invention of Claim 2>
The roll according to claim 1, wherein the belt-like continuous paper has a pattern in which lines, dots, figures, designs, geometric designs or characters are regularly arranged continuously in a predetermined range in the width direction including side edges. paper.

<Invention of Claim 3>
The roll paper according to claim 2, wherein the side edges of the belt-like continuous paper have printed portions and non-printed portions regularly arranged in the longitudinal direction.

<Invention of Claim 4>
2. The roll paper according to claim 1, wherein the belt-like continuous paper has a predetermined range in the width direction including a side edge continuously printed in a solid or halftone dot.

<Invention of Claim 5>
The roll paper according to claim 1, wherein the belt-like continuous paper has a monochrome pattern in a predetermined range in the width direction including at least the side edges.

  As described above, according to the present invention, a roll paper having a design property is provided not only on the peripheral surface (body surface) but also on the end surface (mirror surface).

Next, embodiments of the present invention will be described in detail below with reference to the drawings.
<First Embodiment>
The roll paper X1 in the present embodiment is a roll paper in which a belt-like continuous paper 10 is wound up.
On the side edge portion 10S of the continuous paper 10, there is a pattern 11 having a solid printing portion 11b that is monochromatic solid printed continuously in the longitudinal direction in a predetermined direction in the width direction including the side edge 10e as a whole or a part of its constituent elements. It is arranged.
Due to the solid printing unit 11b, the end surface 1S of the roll paper X1 is formed of a continuous laminated surface of the solid printing unit 11b and is a non-patterned colored surface having a different color from the base of the continuous paper 10.
Here, halftone printing can be employed instead of solid printing. In this case, it is desirable to set the printing area to 5% or more. If it is less than 5%, it is difficult to become substantially blank.

On the other hand, in the roll paper X1 of the present embodiment, a pattern 12 in which a plurality of designs such as pictures, patterns, characters, etc. are arranged between the patterns 11 on both side edges 10S, 10S of the continuous paper 10 (hereinafter also referred to as a design pattern). Is arranged. The illustrated example has a pattern in which a plurality of floral designs are arranged.
The pattern constituting the design pattern 12 is not limited to the floral pattern in the illustrated example, and an appropriate design such as a spiral pattern, wave pattern, dot pattern, turtle shell pattern, star pattern, cross pattern, geometric pattern, etc. is arranged. be able to.
By having the above configuration, the roll paper X1 of the present embodiment has an excellent peripheral surface design by the design pattern 12 and has a marble pattern on the end surface caused by the design pattern 12 in the conventional product. In addition, the design is improved in that the end face 1S has a single-color non-pattern.

Furthermore, in the roll paper X1 according to the present embodiment, if the continuous paper 10 has the solid printing portion 11b, a colored non-pattern end face is formed. The pattern imparted to the side edge portion 10S can be a striped pattern 11s.
With such a stripe pattern 11s, the end face 1S can be formed as a colored non-pattern end face without giving unnaturalness to the pattern on the peripheral surface and without reducing the design.

Furthermore, as shown in FIG. 4, the design of the body surface 1 </ b> C can be improved by using the pattern 11 of the side edge portion 10 </ b> S including the solid print portion 11 b as a regular geometric pattern.
Here, specifically, the range L1 for solid printing or halftone printing is preferably set to a range of about 1 to 30 mm from the side edge 10e of the continuous paper. Even if the end surface 1S is slightly crushed, the other color portion is not exposed.
The method for applying the pattern / pattern 11 including the solid printing unit 11b and the design pattern 12 to the continuous paper 10 is not particularly limited, and can be performed by a known printing technique for continuous sheets. For example, it can be applied by a printing technique using an offset printer or a gravure printer.

Although a patternless colored end surface can be obtained by direct printing on the end surface 1S, it is extremely difficult to print on the end surface which is a laminated surface, and it is extremely difficult to manufacture by the solid printing portion forming method of the present embodiment. It is advantageous. In particular, roll paper made up of continuous paper such as a toilet roll, which has a small basis weight and is water-degradable, is extremely difficult. Is.
On the other hand, the continuous paper 10 may be provided with embossing. The embossing form and the like are not particularly limited, and can be appropriately given according to a known embossing technique. It is good to set it as the range of about 1-30 mm from the side edge 10e of continuous paper. Even if the end surface 1S is slightly crushed, the other color portion is not exposed.

Here, the physical properties of the continuous paper 10 can be appropriately designed according to each application of roll paper products such as toilet paper, kitchen paper, and towel paper.
For example, in the case of a toilet roll, the continuous paper is desirably 2 plies or 3 plies, and the basis weight according to JIS P 8124 of the 1 ply is preferably 10 to 25 g / m ² . The reason why the lower limit is defined as 10 g / m ² is that if it is less than 10 g / m ² , it is preferable from the viewpoint of improving softness, but the strength cannot be ensured properly. Further, the upper limit was defined as 25 g / m ^2, when greater than 25 g / m ^2, too hard, because the feel is deteriorated.
If it is set as a kitchen paper etc., the basic weight of a known kitchen paper can be made into high basis weight, for example, 15-30 g / m < ² > by reference.

Further, if the continuous paper 10 is a toilet roll, the longitudinal strength (MDT) is 200 to 400 gf / 15 mm, the lateral strength (CDT) is 50 to 150 gf / 15 mm, and the longitudinal elongation (MDS) is 10 to 30% ( The measurement is preferably based on JIS P8113).
In the case of a sheet product (kitchen paper) requiring higher strength, the longitudinal strength (MDT) is 1300 to 2000 gf / 15 mm, the lateral strength (CDT) is 400 to 700 gf / 15 mm, and the longitudinal elongation (MDS) is 5 It is preferable that it is ˜30% (measurement conforms to JIS P8113).
When the strength of the base paper is below these lower limits, sheet breakage or the like occurs, and when it exceeds the upper limits, the texture deteriorates. Further, when the sheet elongation is below these lower limit values, the sheet breaks or the like, and when it exceeds the upper limit value, wrinkles or the like occur in the sheet and the operability deteriorates.

The continuous paper 10 uses appropriate raw materials such as pulp fibers, films of polyethylene, polyethylene terephthalate, polypropylene, etc., depending on the use of roll paper such as toilet paper, kitchen paper, towel paper, etc. can do.
When the continuous paper 10 is made of pulp fiber or the like, a base paper that is subject to embossing through a known papermaking process, specifically, a wire part, a press part, a dryer part, a size press, a calendar part, etc. It can be a sheet. In this papermaking, for example, appropriate chemicals such as a dispersant, caustic soda, aqueous ammonia and other pH adjusters, antifoaming agents, preservatives, fluorescent dyes, mold release agents, water resistance agents, flow modifiers, yield improvers, etc. Can be added.

  When the raw material is a pulp fiber, the pulp fiber (raw pulp) may be wood pulp, non-wood pulp, synthetic pulp, waste paper pulp, or the like, more specifically, groundwood pulp (GP), stone ground pulp (SGP). ), Refiner ground pulp (RGP), pressurized groundwood pulp (PGW), thermomechanical pulp (TMP), chemithermomechanical pulp (CTMP), bleached chemithermomechanical pulp (BCTMP) and other mechanical pulp (MP), chemical Kraft pulp (KP) such as mechanical pulp (CGP), semi-chemical pulp (SCP), hardwood bleached kraft pulp (LBKP), softwood bleached kraft pulp (NBKP), soda pulp (AP), sulfite pulp (SP), Chemical pulp (CP) such as dissolving pulp (DP), nylon, rayo Synthetic pulp made from polyester, polyvinyl alcohol (PVA), deinked pulp (DIP), waste paper pulp such as waist pulp (WP), ground pulp (TP), cotton, flax, hemp, jute, manila hemp, ramie It is possible to use one or several kinds as appropriate from rag pulp, straw pulp, esparto pulp, bagasse pulp, bamboo pulp, kenaf pulp and other auxiliary pulps such as bast pulp, etc. it can.

In producing the roll paper X1 of the present embodiment described above, first, in a printing process for a wide continuous base paper, a linear printing unit approximately twice as large as a solid printing unit is provided in a range including a portion to be cut by a subsequent cutter. Then, after patterning the continuous paper 10, it is wound up by a winder.
The roll paper X1 concerning this form is obtained by cutting the winding paper into the cutter in the width direction and cutting the substantially center of the linear printed part. It can be produced according to known production processes.
In the case of the above width, there is almost no possibility of an accident in which the solid print portion cannot be obtained due to a deviation due to winding or a deviation at the time of cutting with a cutter.

<Second Embodiment>
In the roll paper X2 of the second embodiment, lines, dots, figures, designs, geometric designs or characters are regularly arranged in the longitudinal direction of the continuous paper on the side edge portion 10S of the continuous paper 10. In particular, the difference from the first embodiment is that the side edge 10e of the belt-like continuous paper 10 does not have a pattern (printed portion) P1 and the pattern. The portion (non-printing portion) P2 has a certain form.
The pattern 11 includes a dot pattern, a lattice pattern, a stitch pattern, and a large number of lines that intersect with the side edge 10e at a predetermined angle, for example, an angle of about 30 to 45 degrees. Appropriate designs such as mesh pattern, spiral pattern, wave pattern, dot pattern, turtle shell pattern, star pattern, cross pattern, geometric pattern can be arranged. However, it is not necessarily limited to this example.
The geometric pattern 11 in the roll paper X2 of this embodiment is preferably composed of a single color, particularly the same color as the base, and the pattern portion (printing portion) P1 and the non-pattern portion (non-printing portion) on the side edge 10e. It is more desirable that P2 is regularly continuous in the longitudinal direction at a constant ratio.
The ratio of the width of the pattern portion (printed portion) P1 and the width of the non-pattern portion (non-printed portion) P2 over the side edge 10e is preferably 10: 1 to 1: 1.
Although depending on the winding density of the roll paper, if the ratio of the non-patterned portion P2 is increased, it is not possible to expect an improvement in the design property that becomes an end face close to a marble pattern.
Furthermore, the non-pattern part (non-printing part) P2 concerning the side edge 10e is preferably less than 10 mm per unit part. If the range of the non-pattern portion (non-print portion) P2 is within such a range, at least the end surface 1S has a substantially uniform single color surface that is lighter than the print color as a whole due to the dot / line stacking by the print portion P1. Or a regular spiral pattern surface / circular pattern surface in which dots and lines overlap in a circle, and at least an end surface that is much more excellent in design than an irregular marble pattern.
In addition, the arrangement of the design pattern 12, the physical properties of the continuous paper, the manufacturing method, and the like can be the same as those in the first embodiment.

Next, a roll paper according to the present invention is prepared, and the relationship between the range of applying the pattern of the continuous paper side edge and the appearance, and the portion (printed portion) P1 on which the pattern of the side edge of the continuous paper is applied (the non-patterned portion) Printed portion) The ratio between P2 and the appearance was evaluated.
Samples 1 to 5 are toilet paper, and samples 6 to 10 are kitchen paper. The evaluation method was a sensory evaluation in which the subject was allowed to visually observe the peripheral surface and the end surface of the sample, and the feeling of appearance was selected with two choices of “good” and “bad”. There were 50 subjects. The result ◯ in the table is that 40 or more subjects felt that the appearance was good, and Δ was other than that.

  As shown in the evaluation column in the table, the number of subjects who do not feel good about the appearance of the torso tends to increase, and when the ratio of the non-patterned part to the pattern part is high, the appearance of the mirror surface does not feel good It was found that the number of subjects tended to increase.

  INDUSTRIAL APPLICATION This invention can be utilized for the sheet roll formed by winding up the strip-shaped sheet material which has a pattern other than roll paper.

It is a perspective view of the roll paper of 1st Embodiment. It is a figure for demonstrating the pattern and design of the continuous paper. It is a figure which shows the other example of a pattern of the roll paper of 1st Embodiment. It is a figure which shows another example of a pattern of the roll paper of 1st Embodiment. It is a figure for demonstrating the roll paper of 2nd Embodiment. It is an enlarged view of the one side edge part.

Explanation of symbols

  X1-2 ... Toilet roll, 1S ... Toilet roll end surface (mirror surface), 1C ... Toilet roll peripheral surface (torso surface), 10 ... Continuous paper, 10S ... Predetermined range including side edges of continuous paper, 10e ... Continuous paper side Edge, 11 ... Solid print part (geometric pattern part), 11s ... Stripe pattern, 12 ... Design pattern, P1 ... Pattern part, P2 ... Non-pattern part, L1 ... Solid print range.

Claims (5)

A cylindrical roll paper in which a strip-shaped continuous paper having a pattern is wound,
The end surface is a non-patterned colored surface, a colored surface in which lines or dots are arranged substantially uniformly, or a regular patterned surface, in which a portion related to the side edge of the continuous paper pattern is exposed. Roll paper characterized by.   The roll according to claim 1, wherein the belt-like continuous paper has a pattern in which lines, dots, figures, designs, geometric designs or characters are regularly arranged continuously in a predetermined range in the width direction including side edges. paper.   The roll paper according to claim 2, wherein the side edges of the belt-like continuous paper have printed portions and non-printed portions regularly arranged in the longitudinal direction.   2. The roll paper according to claim 1, wherein the belt-like continuous paper has a predetermined range in the width direction including a side edge continuously printed in a solid or halftone dot.   The roll paper according to claim 1, wherein the belt-like continuous paper has a monochrome pattern in a predetermined range in the width direction including at least the side edges.

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