JP6532445B2 - Tissue paper packaging products - Google Patents

Description

  The present invention relates to a tissue paper packaging product in which a bundle of a plurality of tissue papers is packaged by a flexible film.

  Household tissue packaging products in which a plurality of bundles of household tissue sheets are stored in a storage container are well known. A typical example of such household thin paper is tissue paper, and among tissue paper products in which a bundle of a plurality of tissue papers is stored in a storage container, it is referred to as a general-purpose type, general-purpose product, etc. There are product categories where emphasis is placed on low prices.

  With such tissue paper products, raw material costs have been reduced while maintaining the feeling of use, such as reducing the basis weight of base paper and reducing the sheet size of one sheet in order to make them cheaper.

  In addition, most of the tissue paper products are storage containers made of relatively rigid paper storage boxes such as coated cardboard, etc. Among the general-purpose types of tissue paper products, materials for such storage containers are included. The market has been expanding, as some bundles have been packaged with cheap resin films that have reduced costs.

  On the other hand, as Patent Document 1 is referred to, a thin film such as polyethylene or polypropylene is used as a packaging film of tissue paper, and linear perforations are formed on the upper surface of the package, At the time of use, the perforations are opened, and the tissue paper is taken out from the opened slit.

JP 2014-129113 A

  However, when the tissue paper is taken out from the slit, the tissue paper to be taken out gets clogged, particularly at the end of the slit, and in some cases, the subsequent tissue paper overlaps and clogs, resulting in tearing of the tissue paper Defective removal occurs such as lifting of the product along with the packaging film.

  Therefore, a main object of the present invention is to provide a tissue paper packaging product with improved removability.

A tissue paper packaging product according to the present invention for solving the above problems is:
A bundle of tissue paper constructed by folding a large number of tissue papers in a pop-up manner is accommodated inside a film packaging bag formed of a flexible film, and the upper surface of the film packaging bag is made of the tissue paper It is a tissue paper packaging product with an outlet formed along the width direction of the bundle,
The above-mentioned tissue paper has a softness of 1.0 to 4.0 cN measured based on the handle ohm method according to JIS L 1096 (2010) E method and is measured based on JIS P 8124 (1998). Basis weight per sheet is 10.0 to 14.0 g / m ² ,
The flexible film forming the film packaging bag has a thickness of 20 to 60 μm, which is measured in accordance with JIS P 8118 (1998), and is in accordance with the handle ohm method according to JIS L 1096 (2010) E method. The softness measured based on it is 5.0 to 50.0 cN,
In the storage space of the film packaging bag, the length in the width direction is 103 to 135% of the length in the width direction of the bundle of tissue paper, and the length in the depth direction is 103 to 135% of the length in the depth of the tissue paper bundle ,
The width of the outlet is 78% to 96% of the width of the tissue paper bundle, the depth is 15% to 28% of the tissue paper bundle, and both widthwise ends are A curve having a radius of curvature of 5 mm or more, or a straight portion of 5 mm or more as the end edge, at least in the range of 5 mm before and after the depth including the edge at the center
A tissue paper packaging product characterized by

  According to the present invention, the removability of a thin paper which is a tissue paper packaged by a film packaging bag is improved.

If the film packaging bag has straight perforations along the width direction as an outlet on the upper surface of the film packaging bag, one set of paper sheets is sequentially taken out from the outlet (slit port), and the number of remaining sets decreases. If you
(1) Especially at the end of the outlet, the removal of the pair from the outlet becomes difficult,
(2) When pulled up forcibly, the thin paper breaks.
(3) When pulled up forcefully, the paper packaging product itself lifts up,
(4) Or at the time of the removal, the end of the outlet is torn, the width of the outlet becomes longer, the holding power of the thin paper becomes weak at both edges of the outlet, and the holding property of the thin paper decreases.
Phenomena such as
In the present invention, one tissue sheet refers to a form in which one sheet or a plurality of plies (a plurality of sheets are stacked) in the embodiment, and for example, in tissue paper products, generally two plies (two Stack up) as one set.

The inventor made various studies in order to find out the factors causing these phenomena. As a result, they found that the following was the root cause.
That is, if the number of remaining sets is reduced by repeated removal from the outlet, the space between the upper surface of the thin paper sheet bundle and the upper surface of the film becomes large and the shape of the packaging film is easily deformed. There is a phenomenon that the contact area between the set of tissue paper and the inner surface of the upper surface of the film increases, and the friction generated between them increases the take-out resistance.
That is, when the number of remaining sets decreases, when the film upper surface floats and is deformed in a chevron toward the taking-out port, the friction generated between the thin paper and the inner surface of the film upper surface occurs as a result. It is considered that the phenomenon of (1) described above occurs.

  The present invention is for improving the removability, and is intended to solve the above-mentioned problem (1).

In the present invention, the width of the outlet improves the removability. Further, instead of the linear slit opening in the present invention, by to have a large depth to some extent from 15% to 28% with respect to the depth direction of the thin paper bundle can be suppressed extraction resistance due to extraction, from the surface Also, the removability becomes good.

  It is particularly desirable that each end of the outlet has a curve with a radius of curvature of 5 mm or more, or a straight portion of 5 mm or more as the outermost edge, at least in the range of 5 mm before and after the depth centering on the outermost edge.

  It is desirable that the outlet be opened by excision. By opening the outlet by cutting, the removal resistance between the side edge of the outlet and the thin paper becomes small.

  As long as the conditions of the present invention are satisfied, the outlet can also be formed by perforations arranged along the width direction. In the case of the above-mentioned excision, it is necessary to discard the excision piece, which is an environmental burden. If perforations are formed in advance and the user opens the container at the time of use, it is possible to prevent foreign matter from being mixed into the film packaging bag, and to suppress the load on the environment.

  The outlet may be S-shaped in plan view.

  The end of the outlet may be located on the same side in the depth direction. The meaning of the "same side in the depth direction" will be described later.

  As a film to be used, at least one of polyethylene and polypropylene can be used as a material. It may be of two or more of these laminated structures.

  According to the present invention, the removability of the thin paper packaged by the film packaging bag can be improved.

It is a perspective view of a tissue paper package of an embodiment of the present invention. (A) is a top view of an example of an outlet, (B) is a sectional view taken along the line 2-2 in FIG. 3 is a cross-sectional view taken along line 3-3 in FIG. It is a perspective view of the situation which takes out tissue paper from a tissue paper package. It is a top view which shows the example of an extraction port. It is a top view which shows the other example of an extraction port. It is a top view which shows another example of an extraction port. It is sectional drawing of the tissue paper extraction condition in the case of a slit opening (extraction opening). It is a perspective view explaining the measuring method of extraction resistance value.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The tissue paper of the embodiment described below is a tissue paper.

  The arrow WD shown in the drawing indicates the width direction, the arrow CD indicates the depth direction, and the arrow HD indicates the bulk direction.

First Embodiment
1 to 4 show a first embodiment of a paper package product according to the present invention. This thin paper packaged product 1 has a film packaging bag 10 formed of a flexible resin film, and a thin paper bundle 20 stored in a storage space 16 inside the film packaging bag 10.

At the center of the top surface 11 of the film packaging bag 10 in the depth direction, an outlet 15 is formed along the width direction WD of the bundle of thin paper sheets 20.
The bundle of thin paper sheets 20 stored in the storage space 16 of the film packaging bag 10 is formed by folding a large number of thin paper sheets 2 in a pop-up manner, and has a rectangular parallelepiped shape as a whole. As illustrated, the thin paper 2 is folded in a bulk direction, and the folding direction of the thin paper 2 and the upper surface of the film packaging bag 10 are opposed to each other.
The thin paper 2 can be taken out by picking up from the outlet 15 one by one.

  As a dimension example of the bundle of thin paper sheets 20, the width W2 is 150 to 250 mm, the length C2 in the depth direction is 80 to 130 mm, and the length H2 in the bulk height direction is about 25 to 110 mm. The dimensions of can also be within this range.

  In the storage space 16 of the film packaging bag 10, the widthwise length W1 is 103 to 135% of the widthwise length W2 of the thin paper bundle 20, and the depthwise length C1 is the depthwise length C2 of the thin paper bundle 20 Preferably, it is 103 to 135% of If the widthwise length W1 and the depthwise length C1 of the storage space are within the above numerical range, the contact portion between the widthwise both sides and both the depthwise both sides of the thin paper sheet bundle 20 and the inner wall of the film packaging bag 10 is reduced. As a result, it is possible to prevent the paper sheet bundle 20 from being shifted excessively in the storage space 16.

  On the other hand, the bulk height direction length H1 of the storage space 16 of the film packaging bag 10 is preferably 100 to 130% of the bulk height direction length H2 of the thin paper sheet bundle 20. When the bulk height direction length H1 of the storage space 16 of the film packaging bag 10 exceeds 130% of the bulk height direction length H2 of the thin paper sheet bundle 20, the appearance becomes worse and the film packaging bag 10 takes over and takes out the thin paper sheet 2. There is a problem that becomes difficult.

  As the thin paper 2 constituting the thin paper bundle 20, a tissue paper, a paper towel, and a kitchen paper are used, and the softness is 1.0 to 4.0 cN. Here, softness refers to the value measured based on the handle ohm method according to JIS L 1096 (2010) E method. However, the size of the test piece is 100 mm × 100 mm, and the clearance is 5 mm. One sheet is measured five times each in the longitudinal direction and the lateral direction, and the average value of all ten times is taken. Softness is unitless, but in consideration of the size of the test piece, cN / It may be expressed in units of 100 mm.

The basis weight per sheet specified in JIS P 8124 (1998) is 9.0 to 20.0 g / m ² as the thin paper 2 constituting the thin paper bundle 20.

  As the thin paper 2 constituting the thin paper bundle 20, a tissue paper, a paper towel, and a kitchen paper are used, and the thickness in the embodiment is 100 to 170 μm. Here, after the paper thickness is adjusted sufficiently under the conditions of JIS P 8111 (1998), the thickness of the paper is dial thickness gauge (thickness measuring instrument) "PEACOCK G type" (manufactured by Ozaki Mfg.) Under the same conditions. It means the value measured by using. The concrete procedure of this paper thickness measurement is to make sure that there is no dirt and dust etc. between the plunger and the measuring table, lower the plunger on the measuring table, move the memory of the dial thickness gauge and zero it. Align the points and then raise the plunger to place the sample on the test bench, slowly lower the plunger and read the gauge at that time. At this time, only put the plunger on. The terminal of the plunger is made of metal so that a circular plane with a diameter of 10 mm is perpendicular to the plane of the paper or film, and the load at the time of this paper thickness measurement is about 70 gf. Take an average of 10 measurements.

  As a packaging form of the film packaging bag 10, the widthwise end 17 is sealed by heat sealing or the like in a state in which the thin paper sheet bundle 20 is accommodated inside the flexible (plastic) film, and the sealing portion 19 is formed. For example, a pillow type packaging bag can be mentioned.

  The film packaging bag 10 may be a caramel packaging bag or a gusset packaging bag in addition to the pillow packaging bag. The packaging form can be appropriately selected depending on the number of sets to be stored mainly. Pillow packaging bags are flexible and suitable, but not very suitable for thick packages and large sets. The caramel packaging bag has an advantage of being less likely to bend since the support of both widthwise end portions (that is, the surface in the depth direction) of the packaging bag is stronger than other packaging forms. Gazette packaging is suitable for large numbers of sets.

The pillow package is a package form in which a bundle to be packaged is wrapped up with an exterior film so as to be wound up, the overlapping edges are adhered in the winding direction, and a portion extending beyond the package is also adhered. It is.
A caramel package wraps a bundle to be wrapped to be wrapped in a wrapping film so as to be wound with an outer film, bonds overlapping edges in the winding direction, and further extends a part extending beyond the package from two opposing edges In the packaging aspect, at least the respective front end edges of the triangular or trapezoidal pieces formed at that time are folded on the side of the material to be packaged.
Gazette packaging is a packaging mode in which a package is inserted into a tubular body with both ends open, both ends jumping out beyond the package are surplus, and the opening to which this surplus is adhered is sealed by heat sealing. .
A pillow-type gusset package is a package mode in which a bundle to be packaged is wrapped in an outer film so as to be wound up, both ends jumping out beyond the package are used as surplus, and an opening bonded with the surplus is sealed. It is.

As a flexible film which comprises the film packaging bag 10, the general purpose thing used for the film packaging bag 10 of this kind can be used, for example, a polypropylene resin film, a polyethylene resin film, a polyethylene terephthalate resin film Although it can be used, a polypropylene resin film and a polyethylene resin film are particularly preferable in terms of cost and productivity. The flexible film may be a laminated film in which several films are laminated.
As the polyethylene resin film, a film of a linear or linear short-chain branched polyethylene resin composition can be used. A laminated film of polyethylene terephthalate and a linear or linear short chain branched polyethylene resin composition is preferred.
The linear or linear short-chain branched polyethylene resin composition is also referred to as LLDPE, and can be produced by a known method using a metallocene catalyst. This LLDPE is excellent in heat sealability. Further, as another film, a highly versatile and inexpensive film called LDPE can be used.

  The flexible film constituting the film packaging bag 10 has a thickness measured according to JIS P 8118 (1998) of 20 to 60 μm, and a handle according to JIS L 1096 (2010) E method The softness measured based on the meter method is set to 5.0 to 50.0 cN, more preferably, the thickness is set to 15 to 40 μm, and the softness is 10.0 to 30.0 cN It is assumed. When the thickness of the flexible film is less than 20 μm, there is a problem that the flexible film is easily broken at the time of use, and when the thickness is more than 60 μm, it is difficult to reduce the softness to 50.0 cN or less.

  On the other hand, if the softness of the flexible film constituting the film packaging bag 10 exceeds 50.0 cN, the film packaging bag 10 and the thin paper 2 are excessively rubbed at the time of removal, and the desired effect is obtained by increasing the removal resistance. It becomes difficult to be

  When forming a flexible film having a thickness of 60 μm or more, the softness is reduced by increasing the blending ratio of materials having a low melting point such as LDPE contained in the flexible film and having a soft property. It is preferable to set it to .0 cN or less.

[About outlet]
The width W3 of the outlet according to the present invention is 78% to 96% (86% to 95% is particularly desirable) with respect to the width W2 of the sheet bundle 20, and the depth C3 of the outlet is with respect to the depth C2 of the sheet bundle 20. 15% to 28% (18% to 25% is particularly desirable).

  As the outlet 15 of the present invention, as long as having the depth C 3, examples of the outlet 15, 15A to 15D opened by cutting shown in FIGS. 1 to 5 and the outlet 15J shown in FIG. Can be mentioned.

As the outlet 15 of the present invention, the outlets 15E and 15F shown in FIGS. 6 (A) and 6 (B) and the outlets 15G and 15H shown in FIGS. 7 (A) and 7 (B) by slit holes having a depth C3. It may be an example of
The slit port in this case may be formed in advance continuously, but may be formed by intermittent perforations and the slit port may be formed by breakage by the user.

[Embodiment of outlet shape]
As shown in FIG. 1 and FIG. 2 (A) and FIG. 5 (A), the both ends in the width direction of the outlet 15 in the first embodiment are arcs 15a and 15a.

  The end shape of the outlet can be selected as appropriate. And it is particularly suitable that each end has a curve having a radius of curvature of 5 mm or more, or a straight portion of 5 mm or more as the end edge, at least in the range of 5 mm before and after the depth including the end edge. ing.

The conditions of the shape of the width direction both end part of an extraction port are demonstrated based on FIG.
That is, the radius of curvature (the center of curvature in the illustrated example is of course on the right side) is 5 mm in the range of 5 mm back and forth within at least the depth C3 range including the end edge of the outlet 15 (the left edge of FIG. 5) It is desirable that the above-mentioned curve, or the condition that the outermost edge itself has a linear portion of 5 mm or more, be satisfied.

More specifically, the curvature radius R at least in the range of 5 mm before and after the depth direction in the range CS in the depth direction including the end edge of the outlet 15 (the edge indicated by the two-dot chain line at the left end of FIG. 5) Has a curve of 5 mm or more, or not a curve but a straight portion of 5 mm or more.
Here, a curve having a radius of curvature R of 5 mm or more includes a curve having an infinite radius of curvature R, and a curve having an infinite radius of curvature R is substantially the same as a straight line, but the radius of curvature R is infinite Curves that are large and lines are at least different in concept, so they are defined differently in this specification.

Having a curve with a radius of curvature of less than 5 mm, or a straight portion of less than 5 mm as the outermost edge, at least in the range of 5 mm before and after the depth C3 including the center of the extreme edge of the outlet 15 (left edge in FIG. 5) Means that the outlet is sharp near the extreme edge.
In this case, the takeout resistance value of the tissue paper tends to be large at the acute end, which tends to deteriorate the takeout ability.
In addition, when the film packaging bag 10 is susceptible to tearing (low tear strength) as the material of the film packaging bag 10, tearing of the film packaging bag from the end edge of the takeout is likely to occur when taking out the thin paper. There is a tendency.

  Therefore, a curve with a radius of curvature of 5 mm or more, or a straight portion of 5 mm or more as the outermost edge at least in the range of 5 mm before and after the depth C3 including the center of the extreme edge of the outlet 15 (left edge in FIG. 5) Even if the depth C3 of the outlet 15 is 15% to 28% with respect to the depth C2 of the thin sheet bundle 20, satisfying the condition to be satisfied is a condition to be emphasized in the selection of the embodiment.

  The end of the outlet 15 shown in FIG. 5A is a circular arc, but may have a straight portion as shown in FIG. 5B, or it may be a straight line as shown in FIG. 5C. , (D) may be a curve having a plurality of radius of curvature (r1, r2, r3...).

  On the other hand, it may be a slit having a curved portion such as a circular arc at the end as in the case of the outlets 15E and 15F shown in FIGS. 6 (A) and 6 (B). In this case, each curve portion is directed to the opposite side in the depth direction.

  Further, as with the outlets 15G and 15H shown in FIGS. 7 (A) and 7 (B), the curved portions at the ends may face in the same direction in the depth direction.

  Although the middle slit opening along the width direction connecting the ends is straight at the outlets 15E and 15F shown in FIGS. 6 (A) and 6 (B) and the outlet 15G shown in FIG. 7 (A), FIG. It may be a bulging curve, such as the outlet 15H shown in FIG.

  The depth C3 length in the above example is as illustrated. That is, it means the depth direction range length of the outlet.

In the case of the extraction port 15F shown in FIG. 6B, the peripheral length of the end is long and approaches the middle slit port with a distance G, but there is a possibility that the position in the width direction at the time of extraction of tissue paper may shift. It is difficult to recommend this point of view.
Further, as shown by the removal opening 15J shown in FIG. 7C by cutting, the edge of the intermediate removal opening may be a bulging curve.

In the conventional example, as shown in FIG. 8, in the case of using the slit opening S formed by opening the perforations, extraction from the slit opening S is repeated, and when the number of remaining sets is reduced, thin paper The space between the upper surface of the bundle 20 and the upper surface of the film packaging bag 10 is increased.
Since the shape of the film packaging bag 10 is easily deformed, the contact area between the pair of thin paper sheets 2 currently being taken out and the inner surface of the upper surface of the film packaging bag 10 is increased, and the removal resistance due to friction generated therebetween increases. The phenomenon is seen. That is, when the number of remaining sets decreases, the upper surface of the film packaging bag 10 is deformed toward the slit S in a mountain shape as shown in FIG. As a result, the friction generated between the thin paper 2 and the inner surface of the upper surface of the film packaging bag 10 occurs in a wide range, the take-out resistance becomes large, and the take-out ability is lowered.

  In the present invention, as shown in FIG. 3, since the outlet 15 extends at least in the depth direction CD, the contact between the thin paper 2 of the set and the inner surface of the upper surface of the film packaging bag 10 can be suppressed. It is possible to suppress the change of the takeout resistance value according to the decrease of the pressure drop, thereby suppressing the change of the shape of the upper surface of the film packaging bag 10 (lifting of the upper surface of the film packaging bag 10) as shown in FIG. As a result, since it is possible to stably take out the tissue paper from the outlet 15 up to the final set, there is no breakage of the thin paper or lifting of the thin paper packaged product 1 itself.

  The bundle of thin paper sheets 20 according to the embodiment is formed by folding a square thin paper sheet in two and arranging the edges of the folded pieces on the inner side of the folded back side of the thin paper sheets that are adjacent to each other in a staggered manner. When one folded-up piece located at is pulled up, another adjacent folded-up piece immediately below it is pulled up and becomes a so-called pop-up type thin paper sheet bundle 20. Such a bundle of paper sheets 20 can be manufactured by a multi-stand type, rotary type known inter-folder. However, the bundle of thin paper sheets 20 of the present invention is not limited to the above-described pop-up type thin paper bundle 20, and may be a stack of square tissue paper folded in half. The shape of the bundle of thin paper sheets 20 is substantially rectangular.

  Although the number of the thin paper sheets 2 constituting the thin paper sheet bundle 20 is not limited, in the case of a tissue paper product, generally, two plies (two sheets are stacked) form 90 to 240, and Also in the case of the paper package product 1, the number can be set to 90 to 240.

  Each of the thin paper sheets 2 constituting the thin paper sheet bundle 20 has a ply structure in which 2 to 3 thin paper sheets having a crepe are stacked to be a set. This tissue paper 2 is of the dried type.

  The raw material pulp of the thin paper constituting the thin paper 2 is a mixture of NBKP and LBKP. Waste paper pulp may be blended, but in terms of texture and the like, it may be composed of only NBKP and LBKP. As a blend ratio, NBKP: LBKP = 20: 80-80: 20 is good, and in particular, NBKP: LBKP = 30: 70-60: 40 is good.

The basis weight per one thin paper sheet constituting each ply of the thin paper 2 is 10.0 to 14.0 g / m ² of the general-purpose type. The preferable basis weight here in the thin paper 2 of the present embodiment is that according to the measurement method of JIS P 8124 (1998). Moreover, the thickness of the thin paper 2 is 100 to 170 μm, more preferably 100 to 140 μm, in the state of 2 plies. The paper thickness here is a dial thickness gauge (thickness measuring device) “PEACOCK G type” (manufactured by Ozaki Mfg. Co., Ltd.) under the same conditions after sufficiently conditioning the test piece under the conditions of JIS P 8111 (1998). It is the value measured in the two-ply condition.

  Next, the packaging film to be used will be described. As described above, various polyethylenes and polypropylenes are suitably used as the material to be used. In particular, polypropylene is preferable because it has the stiffness of a film and perforations can be easily opened. Furthermore, the film packaging bag 10 may use a laminated film formed by laminating two or more types of polyethylene and polypropylene layers. Specific examples of the laminated structure include (1) OPP / CPP bonded two-layer structure (dry laminate), (2) OPP / PE / CPP three-layer structure, and (3) PE / PE two-layer structure. Be Here, OPP indicates biaxially oriented polypropylene, CPP indicates non-oriented polypropylene, and PE indicates polyethylene. The CPP is preferably formed by coextrusion of two or more kinds of polypropylene having different melting points. As PE, low density polyethylene, linear low density polyethylene, etc. can be used.

20-60 micrometers is preferable and, as for the thickness of the film packaging bag 10, 30-50 micrometers is more preferable. If the thickness of the film packaging bag 10 is less than the above range, the strength decreases and it is easily broken. If it exceeds the above range, it may be difficult to open at the breaking line, or the heat sealing process may not be performed cleanly on the operation surface.
The extension in the CD direction of the film packaging bag 10 is preferably 10 to 300%, more preferably 40 to 250%, and still more preferably 80 to 150%. If the elongation of the film packaging bag 10 in the CD direction is less than the above range, the breaking line may pass through the seal portion and reach the end at the time of unsealing, and the package may be easily torn; Tends to be difficult to open.
The tear strength in the MD direction of the film packaging bag 10 is preferably 150 to 8000 mN, and more preferably 1000 to 4000 mN. If the tear strength of the film packaging bag 10 in the MD direction is less than the above range, the breaking line may pass through the sealing portion and reach the end during opening, and the package may be easily broken. It tends to be difficult to open with a line.

The basis weight of the film packaging bag 10 is measured in accordance with JIS P 8124 (1998). The thickness of the film packaging bag 10 is measured in accordance with JIS P 8118 (1998).
The tensile strength and the elongation of the film packaging bag 10 in the CD direction are measured in accordance with JIS P 8113 (2006). In addition, the measurement of tensile strength and elongation can use the tensile strength measuring device (SE-062) made from former Lorentzen & Wettre, for example. Specifically, prepare a strip-shaped sample with a width of 50 mm in the MD direction and long in the CD direction, insert a slit with a length of 40 mm along the MD direction at the longitudinal center of the sample, and pull in the CD direction taking measurement. The extension speed of the test piece (moving speed of the gripping tool) is 20 mm / min, and the span of the gripping tool is 100 mm.
The tear strength of the film packaging bag 10 in the MD direction is measured in accordance with JIS P 8116 (2000). In addition, the tear strength can use the Elmendorf type tear strength tester (SE-009) by former Lorentzen & Wettre company, for example. Specifically, a single strip-shaped sample with a width of 63 mm in the MD direction and a long strip set in the CD direction is set, and a cut is made along the MD direction in the longitudinal center of the sample with a knife provided in the tear strength tester. And tear in the MD direction and measure. Cut the length of the cut 20 mm.

  As the dimensions of thin paper (web), the bulk can be 30 to 100 mm, the width can be 150 to 250 mm, the depth can be 95 to 120 mm, and the number of storage sets can be 90 to 240.

  With regard to the takeout resistance value of thin paper, the 10th set takeout resistance value is preferably 60 gf or less, in particular 52 gf or less, and more preferably less than 50 gf.

Here, the measurement of the takeout resistance value is performed in the following order.
As shown in FIG. 9, the center of the tip of the thin paper 2 popping up from the outlet is held by a clip 21 (manufactured by KOKUYO Co., Ltd., trade name: Eyeball clip CREE 17). Specifically, a circle mark 23 with a diameter of about 1 mm is attached with a water-based pen at the center of the widthwise side of the thin paper 2 and 10 mm from the end in the take-out direction It is parallel to the width direction, and is held so that the center of the holding portion and the circle mark 23 coincide with each other.
Pass the hook 22a of the push-pull gauge 22 (made by Imada Co., Ltd., trade name: digital force gauge DPS-20) through the hole of one pressing portion 21a of the clip 21 and pull the push-pull gauge 22 upward to make 0. The thin paper 2 is taken out vertically from the film packaging bag 10 at a constant speed over a period of 4 seconds to 0.6 seconds, and the maximum value of the resistance during the taking-out operation is taken as the taking-out resistance value.
In the measurement, the first to tenth sets of tissue paper 2 are taken out 10 times from the top layer, and the average value of the 10th set of each time is calculated.

  Next, Examples and Comparative Examples of the paper package product 1 according to the present invention will be shown to clarify the effect of the present invention.

(Commercial item)
With regard to film packaging bags each containing 150 sets (two sheets, one set) of tissue paper commercially available, the removal properties were evaluated by the "extraction resistance value" and "the number of sets in which film lifting (lifting of packaging bag) occurred".
Here, the "extraction resistance value" was measured for the first set, the fifth set, the 10th set, the 25th set, the 50th set respectively, but the 10th set "extraction resistance value clearly shows the tendency of the extractability. "I filled out the table only.
In addition, when "the number of sets of film floating (lifting of the packaging bag) occurs" is taken out sequentially, the shape of the upper surface of the film packaging bag changes, the outlet is deformed, and the film packaging bag floats (lifts). The number of sets that the department has completely floated from the storage area such as desks and floors.
Other extractability is described in the remarks.
As shown in Table 1, those with a depth of 0 mm that form slit openings by opening the perforations all have a small number of remaining groups, and when the take-out resistance value exceeds the product weight, “film floats” It occurs.

(Comparison of trial product and comparison product)
The trial product and the comparative product which changed the width direction length of a slit opening and the packaging form were created (all 150 sets (two sheets 1 set)), and the removal property was evaluated. The basis weight of thin paper is common at 10.9 g / m ² .
As shown in Table 1, there is a tendency that the takeout resistance value tends to increase due to the reduction of the length in the width direction of the takeout port (comparison of prototype 1 and comparative product 1). Further, as in the comparative product 2, the length in the width direction can be further reduced and the length in the width direction can be extended to reduce the takeout resistance value, but when the length in the width direction is too short, the tissue paper may shrink. This is a result of the occurrence of clogging, and the lift of the film packaging bag has not been improved. It is presumed that this is because the widthwise side edge of the tissue paper comes in contact with the end of the slit and the resistance at that time is added as a takeout resistance value.

(Prototypes 1 to 4)
With the dimensions of the outlet fixed, trial products having different film materials and film thicknesses were prepared, and the removability was evaluated.
As shown in Table 1, if the film material and film thickness are within the specified range and the film take-out port is constant, the take-off resistance is suppressed and no film floating occurs, but the take-off resistance is due to the film becoming too thick. The value increases and film floating occurs.

(Comparison of Prototypes 2 to 4 and Comparatives 4 to 5) With respect to Comparative Product 4 in which the width direction is further increased from the outlet port ratio which is not specified in the present invention, the bundle of It came out of the exit, and it became the result which can not be taken out until the end. Moreover, about the comparative product 5 which narrowed the depth direction, extraction property fell and generation | occurrence | production of film floating was confirmed.

DESCRIPTION OF SYMBOLS 1 ... paper sheet packaging product, 2 ... tissue sheet, 10 ... film packaging bag, 15 ... outlet, 15a ..., 16 ... storage space, 17 ... width direction end, 19 ... seal part, 20 ... paper sheet Bundle, 21: clip, 21a: pressing portion of clip, 22: push-pull gauge, 22a: hook, 23: circle of clip, WD: width direction, CD: depth direction, HD: bulky direction, S: slit opening.

Claims (6)

A bundle of tissue paper constructed by folding a large number of tissue papers in a pop-up manner is accommodated inside a film packaging bag formed of a flexible film, and the upper surface of the film packaging bag is made of the tissue paper It is a tissue paper packaging product with an outlet formed along the width direction of the bundle,
The above-mentioned tissue paper has a softness of 1.0 to 4.0 cN measured based on the handle ohm method according to JIS L 1096 (2010) E method and is measured based on JIS P 8124 (1998). Basis weight per sheet is 10.0 to 14.0 g / m ² ,
The flexible film forming the film packaging bag has a thickness of 20 to 60 μm, which is measured in accordance with JIS P 8118 (1998), and is in accordance with the handle ohm method according to JIS L 1096 (2010) E method. The softness measured based on it is 5.0 to 50.0 cN,
In the storage space of the film packaging bag, the length in the width direction is 103 to 135% of the length in the width direction of the bundle of tissue paper, and the length in the depth direction is 103 to 135% of the length in the depth of the tissue paper bundle ,
The width of the outlet is 78% to 96% of the width of the tissue paper bundle, the depth is 15% to 28% of the tissue paper bundle, and both widthwise ends are A curve having a radius of curvature of 5 mm or more, or a straight portion of 5 mm or more as the end edge, at least in the range of 5 mm before and after the depth including the edge at the center
A tissue paper packaging product characterized by   The tissue paper packaged product according to claim 1, wherein the outlet is cut open. A bundle of tissue paper constructed by folding a large number of tissue papers in a pop-up manner is accommodated inside a film packaging bag formed of a flexible film, and the upper surface of the film packaging bag is made of the tissue paper It is a tissue paper packaging product with an outlet formed along the width direction of the bundle,
The above-mentioned tissue paper has a softness of 1.0 to 4.0 cN measured based on the handle ohm method according to JIS L 1096 (2010) E method and is measured based on JIS P 8124 (1998). Basis weight per sheet is 10.0 to 14.0 g / m ² ,
The flexible film forming the film packaging bag has a thickness of 20 to 60 μm, which is measured in accordance with JIS P 8118 (1998), and is in accordance with the handle ohm method according to JIS L 1096 (2010) E method. The softness measured based on it is 5.0 to 50.0 cN,
In the storage space of the film packaging bag, the length in the width direction is 103 to 135% of the length in the width direction of the bundle of tissue paper, and the length in the depth direction is 103 to 135% of the length in the depth of the tissue paper bundle ,
The outlet is formed by slits arranged along the width direction, and the width is 78% to 96% with respect to the width of a bundle of tissue paper, and both widthwise ends are centered on the outermost edge. Including a curve with a radius of curvature of 5 mm or more, or a straight portion of 5 mm or more as the outermost edge at least in the range of 5 mm before and after the depth, and the depth direction range length is 15 with respect to the depth of the tissue paper bundle % -28% ,
A tissue paper packaging product characterized by   The tissue paper packaged product according to claim 3, wherein the outlet port has an S-shape in plan view.   The tissue paper packaged product according to claim 3, wherein the outlet has a curved portion at an end, and the curved portion is shaped to be curved in the same direction of depth.   The tissue paper packaging product according to claim 1, wherein the film is made of at least one of polyethylene and polypropylene.

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