JP2001270577A - Wet tissue packaging body and its manufacturing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for pieces of stably manufacturing laminated wet tissue paper even for a base cloth of large degree of elongation in the vertical direction hard to be provided in manufacturing methods heretofore available, because of the advantages of the new method in which a wet tissue packaging bogy formed of a base cloth folded in the lateral direction and laminated is provided with the good performances of forming only the small deformation of the shape of a piece of wet tissue paper when they are taken out and being hard to generate the slip phenomenon. SOLUTION: In the manufacturing method for the wet tissue packaging body in which the base is immersed with a liquid, folded and cut to form a piece of laminated wet tissue papers, (1) the base in the state of keeping the whole width is cut by the give pitches, and respective cut pieces are folded in the direction substantially orthogonal to the vertical direction of the base, and respective cut pieces are overlapped and folded to form a continuous laminate and (2) the continuous laminate is cut into the desired width and stored in the packaging body to manufacture pieces of wet tissue paper, and also the wet tissue packaging body is obtained in the above method.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wet tissue package having excellent take-out properties and a method for producing the same.

[0002]

2. Description of the Related Art Wet tissue is a liquid suitable for the purpose of use (eg, a liquid in which alcohol, a disinfectant, a preservative, a fragrance, etc. are mixed in water) for a base cloth such as paper or nonwoven fabric.
Is impregnated. In addition, the wet tissue is stored in an airtight film-like sealing bag or a plastic container in a state of being stacked in a large number (for example, about 50 to 100 sheets) to be a product.

By the way, as a method of laminating this kind of wet tissue, for example, Japanese Patent Publication No. 55-1
As seen in the web folding device described in Japanese Patent Publication No. 215, it is widely practiced to fold the web parallel to the running direction of the web, that is, in the longitudinal direction of the base fabric. Normal,
The base cloth is supplied in the form of a roll that is slit into a fixed width and wound up.In general, the tensile strength in the longitudinal direction of the base cloth is greater than the tensile strength in the horizontal direction, or the base cloth has a constant tensile strength. When stress is applied, the elongation in the vertical direction is smaller than the elongation in the horizontal direction. Therefore, the wet tissue package in which the base fabric is folded in the vertical direction and laminated by such a method is pulled in the horizontal direction of the base fabric when being pulled out from the outlet, and the shape (elongation) of the wet tissue is deformed (elongated). In the case of a laminated body which is folded or overlapped with each other, there is a problem that a so-called zipping phenomenon in which the next leaf is taken out and taken out easily occurs.

On the other hand, recently, a method of folding the base fabric in the lateral direction has been implemented, and for example, Japanese Patent Laid-Open No.
No. 8331 proposes a device suitable for this.
The laminate of wet tissue formed by this device is:
This realizes a continuous take-out structure for wet tissues described in Japanese Patent Application Laid-Open No. Hei 7-213453, in which the size of the wet tissue of the next leaf led out from the outlet of the container is two minutes in the case of a normal folding structure. There is an advantage that it can be shortened to one-fourth compared to one-third. In addition, the wet tissue package obtained by laminating the base fabric in the horizontal direction by this method and pulling it out of the outlet is pulled in the vertical direction of the base fabric, so that the shape of the wet tissue is less deformed and a slip phenomenon also occurs. Hard to do.

However, this device is sensitive to the characteristics of the base fabric, particularly the elongation in the vertical direction, due to the mechanism for cutting, folding, transferring, and laminating the base fabric on a roll having a constant diameter. Has an inherent instability that a laminate cannot be formed.

[0006]

Generally, in order to prevent the substrate from meandering and to obtain a desired folded shape, it is necessary to apply a constant tension in the longitudinal direction of the nonwoven fabric. The same applies to the above-mentioned folding machine used in the above. For example, in the case of a base fabric such as a nonwoven fabric having a bulky and high elongation or a water-disintegrated paper having a loose fiber bond, if sufficient tension is applied, the deformation of the base fabric becomes excessive and the product shape is damaged, or the strength is insufficient. Therefore, there is a problem of breakage, and it is necessary to operate under a low tension. However,
In this case, it has been found that there is a problem that normal operation cannot be continued in any case, such as difficulty in slit cutting in the product width direction in the former, and disorder in the folded shape in the latter. Such a problem is that the tensile stress at which the elongation in the longitudinal direction of the base fabric when dry becomes 5% is 2000 gf /
It has been found that it is easy to occur when the tensile stress at which the width is 50 mm or less and the longitudinal elongation when wet is 5% is 1000 gf / 50 mm or less. It is an object of the present invention to provide a method for manufacturing a wet tissue package, which can form a laminate of a base fabric excellent in the lateral direction folded in a lateral direction, and a wet tissue package obtained in this manner.

[0007]

SUMMARY OF THE INVENTION The present invention relates to a packaging bag in which a substrate is impregnated with a liquid, folded and cut to form a laminated wet tissue paper, which is liquid-impermeable and has an outlet. In the method for manufacturing a wet tissue package to be enclosed, (1) the base material is cut at a predetermined pitch while keeping the entire width, and each cut piece is folded substantially perpendicular to the longitudinal direction of the base material, and each cut is cut. (2) cutting the long laminated body into a desired width to form a laminated wet tissue paper housed in a package, after the pieces are folded with an overlap on each other to form a long laminated body; And a method for producing a wet tissue package.

[0008] The present invention is also a wet tissue package, wherein the laminated wet tissue paper impregnated with a liquid is liquid-impermeable and enclosed in a packaging bag having an outlet. Each leaf is folded substantially perpendicular to the longitudinal direction of the substrate,
Further, the present invention provides a wet tissue package characterized in that the leaves of the wet tissue paper are folded so as to overlap each other.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail. There is no particular limitation on the material and configuration of the base fabric used in the present invention, and rayon, pulp, a material appropriately combined with a fiber material such as synthetic fiber, a binder, and the like are used.
The sheet may be a single sheet or a sheet formed by laminating a plurality of sheets.

The physical properties of the base fabric such as breaking strength, breaking elongation, wet strength, water disintegration and the like are not particularly limited, but the tensile stress at which the longitudinal elongation in dry condition is 5% is 2000 gf.
The effect of the present invention is particularly exhibited in a base fabric having a width of not more than / 50 mm and a tensile stress of not more than 1000 gf / 50 mm at which the elongation in wet direction is 5% when wet.

FIG. 1 schematically shows the manufacturing method of the present invention. The base fabric is first impregnated, pitch-cut, folded and laminated with a width of several products. Each time the obtained wide continuous laminate reaches a predetermined number, it is separated from the continuous laminate process and divided into individual long laminates. The long laminate is cut into individual laminated wet tissue papers by an appropriate method, and is then sealed by a suitable method in a packaging bag that is liquid-impermeable and has an outlet. The base fabric used in the present invention is usually provided in a roll shape, and the roll width is 500 mm or more, particularly 700 m.
m or more is preferred.

[0012] As a method or an apparatus for forming a laminate used in the production method of the present invention, each leaf of the wet tissue paper is folded substantially perpendicularly to the longitudinal direction of the base fabric, and each leaf of the wet tissue paper is folded. There is no particular limitation as long as the leaves are folded so as to overlap with each other. For example, the devices described in JP-A-8-188331 or JP-A-5-124770 are preferably used. There is no particular limitation on the method or apparatus for cutting the long laminate.
The web laminate cutting device described in Japanese Patent Publication No. 2 is preferably used. Further, as a method for packaging the laminated wet tissue paper, for example, the continuous method for manufacturing a cosmetic-enclosed bag described in Japanese Patent Publication No. 64-3722 can be applied as it is.

On the other hand, FIG.
331 shows a conventional use form of the device of JP-A-331. In other words, the wide base cloth roll set with two right and left is first slit into the desired wet tissue product width,
Thereafter, impregnation, pitch cutting, folding and lamination.
At this time, in the case of the base fabric having a large elongation under the low tensile stress as described above, if the slit is first slit, the width drop becomes remarkable and the elongation increases, and the shape of the base fabric is maintained. Since the cutting pitch cannot be shortened, a desired overlapping width cannot be obtained, and defects such as normal folding and lamination cannot be formed. Therefore, when the operation is performed with the tensile stress at the time of processing reduced, there is a problem that the slit cutting itself cannot be normally performed, and the folding and lamination become impossible, so that the operation cannot be continued. That is, a base fabric having a tensile stress at which dry elongation at 5% is 2,000 gf / 50 mm or less and a tensile stress at wet wet elongation at 5% of at most 1000 gf / 50 mm. However, there is a problem that a desired laminated wet tissue paper cannot be normally obtained.

For the workability of the base fabric, physical characteristics such as breaking strength, breaking elongation, wet strength, and wet elongation have conventionally been used as indices. However, in the process of manufacturing a wet tissue paper, the tensile stress applied to the base fabric is not always the same as the tensile stress in the area of breakage or near even when dry or wet. Need to be processed under low stress. The tensile stress before pitch cutting in the production method of the present invention is 10 to 1000 gf / 50 mm width, preferably 20 to 500 gf / 50 mm width, and is equal to or less than the tensile stress at which the longitudinal elongation of the base fabric is 5%. Is preferably the value of At this time, a long laminated body can be formed using the base fabric having the tensile stress-strain characteristics as described above, and can be provided for the next cutting and packaging steps. When the tensile stress is larger than this range, the deformation of the base fabric is excessive, and when the tensile stress is smaller than this range, the base fabric meanders, and it is difficult to maintain a normal operation state.

[0015]

[Function] Slit cutting process, pitch cutting, folding,
Although the mechanism by which workability is improved after the lamination process is not always clear, the fact that the elongation of the base fabric at the time of processing at the full width is clearly smaller than that after the slit works. It is presumed that it is.

[0016]

EXAMPLES Hereinafter, the present invention will be described in more detail with reference to Examples, but the present invention is not limited to these Examples.

[0017]

Example 1 A three-layered web of rayon / pulp / rayon having a basis weight of 40 gf / m @ 2 and a thickness of 0.45
mm of water-disintegratable spunlaced nonwoven fabric, and two rolls of 750 mm-wide base cloth having tensile stresses of 960 gf / 50 mm width and 130 mm width when the longitudinal elongation of the base cloth in dry and wet conditions is 5%, respectively. Using the apparatus described in JP-A-8-188331.
After forming a long laminated body obtained by folding a piece of base cloth, the obtained long laminated body is cut into 5 equal parts by a conventional method, and then sealed in a water-impermeable film with an outlet label and wet. A tissue package was obtained. Tensile stress before pitch cutting is 1
The width was set to 00 gf / 50 mm, and the aqueous impregnation liquid was impregnated 2.5 times the weight of the base fabric. The cut pitch of the base cloth in the product is 197mm, the width is 154mm, the error of -1% and + 2% to the design dimensions respectively, the folded shape and the laminated body shape are normal, and continuous operation is possible Met. By cutting the long laminate into three equal parts, a laminated wet tissue paper having a cut pitch of 197 mm and a width of 255 mm was obtained.

[0018]

[Comparative Example 1] Laminating wet was performed using the same base cloth and apparatus as in Example 1, except that four slitters were used to divide the base cloth roll into five equal parts in the width direction in the process before folding the base cloth. Tissue paper was subjected to formation. The tensile stress before pitch cutting and the impregnation ratio of the aqueous impregnating liquid were set to the same conditions as in Example 1. Immediately after the start of the operation, the fold shape was disturbed, and the lamination width was widened or deformed, so that normal operation could not be continued.

[0019]

EXAMPLE 2 A spun lace nonwoven fabric having a material composition of 30% rayon / 70% polyester, a basis weight of 55 g / m @ 2 and a thickness of 0.75 mm. 5% tensile stress is 5
Using two base fabric rolls having a total width of 750 mm, which are 20 gf / 50 mm width and 280 gf / 50 mm width, and using a device described in JP-A-8-188331, a long laminate obtained by folding 50 base fabrics is used. After formation, the obtained long laminate was cut into 5 equal parts by a conventional method, and then sealed in a water-impermeable film with an outlet label to obtain a wet tissue package. The tensile stress before pitch cutting is 200
gf / 50 mm width, and the aqueous impregnating liquid was impregnated 2.0 times the weight of the base fabric. The cut pitch of the base cloth in the product is 19
The width was 8 mm, the width was 152 mm, the error was +/- 1% with respect to the design dimensions, the folded shape and the laminated body shape were normal, and continuous operation was possible.

[0020]

Comparative Example 2 Laminating wet was performed using the same base cloth and apparatus as in Example 2 except that four slitters for dividing the base cloth roll into five equal parts in the width direction were operated in the process before folding the base cloth. A tissue paper was formed. When the tensile stress before pitch cutting and the impregnation ratio of the aqueous impregnating liquid are the same as in Example 1, the cut pitch of the base fabric in the product is 192 mm and the width is 159 mm, which is significantly different from the design values.
Folding and laminating shapes were also disturbed. Also,
Slit cutting failure occurred and the operation was interrupted.

[0021]

According to the present invention, there is provided a method for forming a laminated wet tissue paper having a desired folded shape even on a substrate having a large elongation in the longitudinal direction under a constant tensile stress, such as a bulky nonwoven fabric or hydrolyzed paper. A wet tissue package is provided. In addition, the width of the laminate can be arbitrarily changed according to a desired product, and it has an advantage that it can cope with multi-product production. There is provided a flexible manufacturing method capable of manufacturing various sizes of wet tissue packages according to demand from various base cloths including cloth.

[Brief description of the drawings]

FIG. 1 is a schematic view showing a method for producing a wet tissue package of the present invention.

FIG. 2 is a schematic view illustrating a method for manufacturing a wet tissue package according to a conventional technique.

Claims (4)

[Claims] 1. A wet tissue package, wherein a laminated wet tissue paper impregnated with a liquid is liquid-impermeable and sealed in a packaging bag having an outlet.
Each leaf of the stored wet tissue paper is folded in a direction substantially perpendicular to the longitudinal direction of the base fabric, and each leaf of the wet tissue paper is folded so as to overlap each other. Tissue packaging. 2. The tensile stress at which the base fabric has a dry elongation of 5% when dry is 5% or less, and the tensile stress at which the base elongation when wet is 5% is 1%.
The wet tissue package according to claim 1, which has a size of 000 gf / 50 mm or less. 3. Manufacture of a wet tissue package in which a base fabric is impregnated with a liquid, folded and cut to form a laminated wet tissue paper, which is sealed in a liquid-impermeable packaging bag having an outlet. In the method, (1) the base cloth is cut at a predetermined pitch while keeping the entire width, and each cut piece is folded substantially perpendicular to the longitudinal direction of the base material, and each cut piece has an overlap with each other. After forming a long laminated body by folding, (2) the long laminated body is cut into a desired width to form a laminated wet tissue paper housed in the package, wherein the wet tissue package is characterized in that: Manufacturing method. 4. The tensile stress of the base cloth before pitch cutting is 10
The method for producing a wet tissue package according to claim 3, wherein the package has a width of up to 1000 gf / 50 mm and a value equal to or less than a tensile stress at which the longitudinal elongation of the base fabric is 5%.