WO2018061308A1

WO2018061308A1 - Tissue paper package product

Info

Publication number: WO2018061308A1
Application number: PCT/JP2017/019211
Authority: WO
Inventors: 記瑞平田
Original assignee: 大王製紙株式会社
Priority date: 2016-09-29
Filing date: 2017-05-23
Publication date: 2018-04-05
Also published as: JP6532445B2; JP2018052559A

Abstract

[Problem] To provide a tissue paper package product from which a sheet of tissue paper can be pulled out more easily. [Solution] The tissue paper package product comprises a film packaging bag made of a flexible film and a bundle of tissue paper stored inside the film packaging bag, and the upper surface of the film packaging bag has a pullout opening formed along the width direction of the bundle of tissue paper. The bundle of tissue paper is formed from a plurality of sheets of tissue paper having a softness of 1.0-4.0 cN as measured on the basis of a handle-o-meter method conforming to method E in JIS L 1096 (2010) and a grammage of 9.0-20.0 g/m² per sheet as measured on the basis of JIS P 8124 (1998), the plurality of sheets of tissue paper being layered in such a manner that one set can be pulled out at a time through the pullout opening in a pop-up manner. The film forming the film packaging bag has a thickness of 20-60 μm as measured in conformity to JIS P 8118: 1998 and a softness of 5.0-50.0 cN as measured on the basis of the handle-o-meter method conforming to method E of JIS L 1096 (2010) E, the width of the pullout opening is 78%-96% with respect to the width of the bundle of tissue paper, and the cross length of the pullout opening is 15%-28% with respect to the cross length of the bundle of tissue paper.

Description

Thin paper packaging products

The present invention relates to a thin paper packaging product in which a bundle of a plurality of thin papers is wrapped with a flexible film.

家庭 Household thin paper packaging products in which a bundle of multiple household thin papers are stored in a storage container are well known. A representative example of such household thin paper is tissue paper. 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, a general-purpose product, etc. There are product categories where low price is important.

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

Many tissue paper products have a storage container made of paper, such as coated cardboard, which is relatively rigid. Some general-purpose tissue paper products have materials related to such storage containers. There is a package that bundles bundles with inexpensive resin films that reduce costs, and the market is expanding.

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

JP 2014-129113 A

However, when the tissue paper is taken out from the slit opening, the tissue paper to be taken out is clogged, particularly at the end of the slit opening, and in some cases, the tissue paper is overlapped and clogged, and the tissue paper is torn. And take-out defects such as product lifting with packaging film.

Therefore, a main problem of the present invention is to provide a thin paper packaging product with improved take-out property.

The thin paper packaging product according to the present invention for solving the above problems is
A film packaging bag formed of a flexible film, and a thin paper bundle stored inside the film packaging bag,
On the upper surface of the film packaging bag, an outlet is formed along the width direction of the thin paper bundle,
The soft paper has a softness measured based on a handle ohm method according to JIS L 1096 (2010) E method of 1.0 to 4.0 cN,
As for the basis weight of the thin paper, a plurality of thin papers having a basis weight of 9.0 to 20.0 g / m ² measured based on JIS P 8124 (1998) are pop-up type from the outlet. It is formed by being stacked so that it can be taken out one by one,
The film forming the film packaging bag has a thickness measured according to JIS P 8118 (1998) of 20 to 60 μm, and is measured based on a handle ohm method according to JIS L 1096 (2010) E method. The softness is 5.0 to 50.0 cN,
The width of the outlet is 78% to 96% with respect to the width of the thin paper bundle,
The depth of the outlet is 15% to 28% with respect to the depth of the thin paper bundle.

According to the present invention, the take-out property of the thin paper wrapped by the film packaging bag can be improved.

If the film packaging bag consists of straight perforations along the width direction as the outlet on the upper surface of the film packaging bag, the thin paper is taken out one by one from the outlet (slit opening), and the remaining number of sets is reduced. If
(1) It becomes difficult to take out the one set from the outlet, especially at the end of the outlet.
(2) When the paper is forcibly pulled up, the thin paper breaks.
(3) When forcedly pulled up, the thin paper packaging product itself is lifted.
(4) or at the time of taking out, the end of the take-out port is torn, the width of the take-out port becomes longer, the force held by the thin paper at both side edges of the take-out port becomes weak, and the holding property of the thin paper decreases.
Such a phenomenon occurs.
In the present invention, one set of thin paper refers to one or a plurality of plies (a plurality of stacked sheets) in the embodiment. For example, tissue paper products generally have two plies (2 It means to make one set.

The present inventor has conducted various studies to find out the factors that cause these phenomena. As a result, we found that the following is the root cause.
In other words, when the number of remaining sets is reduced after repeated removal from the take-out port, the space between the top surface of the thin paper bundle and the top surface of the film becomes large, and the shape of the packaging film is likely to be deformed. There is a phenomenon that the contact area between the thin paper of the set and the inner surface of the upper surface of the film increases, and the take-out resistance increases due to the friction generated between them.
That is, when the number of remaining sets is reduced, when the film upper surface floats and deforms in a mountain shape toward the take-out port, the friction generated between the thin paper and the inner surface of the film upper surface is caused in a wide range. It is considered that the phenomenon (1) occurs.

The present invention is for improving the take-out property and intends to solve the above-mentioned problem (1).

In the present invention, the take-out property is improved by the width of the take-out port. Further, in the present invention, by taking the outlet having a somewhat large depth of 15% to 28% with respect to the depth direction of the thin paper bundle instead of the slit opening, it is possible to suppress the extraction resistance associated with the extraction. Good take-out performance.

It is particularly desirable that each end of the outlet has a curve having a radius of curvature of 5 mm or more, or a straight part having a length of 5 mm or more as the end edge in a range of at least 5 mm before and after the depth including the end edge.

The outlet should be opened by excision. This is because the take-out resistance between the side edge of the take-out port and the thin paper is reduced by opening the take-out port by cutting.

As long as the conditions of the present invention are satisfied, the outlet may be formed by perforations arranged along the width direction. In the case of the above-described excision, it is necessary to discard the excised piece, which is an environmental load. If a perforation is formed in advance and the user opens it during use, it is possible to prevent foreign matter from entering the film packaging bag and to suppress the burden on the environment.

The outlet may have an S shape in plan view.

The end of the outlet may be located on the same side in the depth direction. The significance of this “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. Two or more types of laminated structures may be used.

According to the present invention, it is possible to improve the take-out property of the thin paper wrapped by the film packaging bag.

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

Hereinafter, embodiments of the present invention will be described with reference to the drawings. As an embodiment described below, an example in which tissue thin paper for household use which is a particularly preferable form is tissue paper will be described. However, the thin paper in the present invention is not limited to tissue paper, and may be so-called kitchen paper or paper towel as long as the basis weight, softness, and the like are within the specified range.

In the figure, an arrow WD indicates a width direction, an arrow CD indicates a depth direction, and an arrow HD indicates a bulky direction.

[First Embodiment]
1 to 4 show a first embodiment of a thin paper packaging product according to the present invention. The thin paper packaging product 1 includes 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 in the depth direction of the upper surface 11 of the film packaging bag 10, an outlet 15 is formed along the width direction WD of the thin paper bundle 20.
The thin paper bundle 20 accommodated in the storage space 16 of the film packaging bag 10 is formed by folding a large number of thin papers 2 in a pop-up manner, and has a rectangular parallelepiped shape as a whole. As shown in the figure, the thin paper 2 is folded in a bulky 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 it up from the take-out port 15 for each set.

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

The storage space 16 of the film packaging bag 10 has a width direction length W1 of 103 to 135% of the width direction length W2 of the thin paper bundle 20 and a depth direction length C1 of the thin paper bundle 20 in the depth direction C2. Preferably, the content is 103 to 135%. When the width direction length W1 and the depth direction length C1 of the storage space are within the above numerical range, the contact portions between the width direction both sides and the depth direction both sides of the thin paper bundle 20 and the inner wall of the film packaging bag 10 are reduced. Therefore, the take-out resistance is small, and on the other hand, it is possible to prevent the thin paper bundle 20 from being excessively displaced in the storage space 16.

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

As the thin paper 2 constituting the thin paper bundle 20, tissue paper, paper towel and kitchen paper are used, and the softness is 1.0 to 4.0 cN. Here, softness refers to a value measured based on the handle ohm method according to JIS L 1096 (2010) E method. However, the test piece has a size of 100 mm × 100 mm, and the clearance is 5 mm. One sheet is measured 5 times each in the vertical direction and the horizontal direction, and the average value is obtained for all 10 times. The softness is unitless, but cN / Sometimes expressed in units of 100 mm.

As for the thin paper 2 constituting the thin paper bundle 20, the basis weight per sheet specified by JIS P 8124 (1998) is 9.0 to 20.0 g / m ² .

As the thin paper 2 constituting the thin paper bundle 20, tissue paper, paper towel, and kitchen paper are used, and the thickness in the embodiment is 100 to 170 μm. Here, the paper thickness was adjusted sufficiently under the conditions of JIS P8111 (1998), and the dial thickness gauge (thickness measuring instrument) “PEACOCK G type” (manufactured by Ozaki Seisakusho) was used under the same conditions. It means the value measured using. The specific procedure for measuring the paper thickness is to check that there is no dust, dust, etc. between the plunger and the measuring table, lower the plunger on the measuring table, and move the dial thickness gauge memory to zero. Align the dots, then raise the plunger and place the sample on the test bench, slowly lower the plunger and read the gauge at that time. At this time, only the plunger is placed. The terminal of the plunger is made of metal so that a circular plane having a diameter of 10 mm is perpendicular to the plane of the paper or film, and the load at the time of measuring the paper thickness is about 70 gf. The average value obtained by performing the measurement 10 times is used.

As a packaging form of the film packaging bag 10, the seal portion 19 is formed by sealing the width direction end portion 17 by heat sealing or the like in a state where the thin paper bundle 20 is housed in the flexible (plastic) film. For example, a pillow type packaging can be mentioned.

The film packaging bag 10 can be a caramel packaging bag or a gusset packaging bag in addition to the pillow packaging bag. The packaging form can be selected as appropriate mainly depending on the number of sets to be stored. Pillow packaging bags are flexible and suitable, but are not very suitable when there are many items to be packaged or a large number of sets. The caramel packaging bag has an advantage that it is difficult to bend because the support of both ends in the width direction of the packaging bag (that is, the depth direction surface) is stronger than other packaging forms. Gazette packaging is suitable when there are many groups.

Pillow packaging is a packaging mode in which a bundle to be packaged is wrapped with an exterior film, the edges overlapping in the winding direction are bonded, and the portion extending beyond the package is also bonded. It is.
Caramel packaging wraps a bundle to be packaged with an exterior film, bonds the overlapping edges in the winding direction, and further extends the part extending beyond the package from two opposing edges. It is a packaging mode formed by folding at least the front edge portions of the triangular piece or the trapezoidal piece formed at that time on the packaged object side.
Gazette packaging is a packaging mode in which an article to be packaged is inserted into a cylindrical body having openings at both ends, both ends projecting beyond the article to be packaged are made into a surplus, and the opening where the surplus is bonded is sealed with a heat seal. .
Pillow-type gusset packaging is a packaging mode in which a bundle to be packaged is wrapped with an exterior film, both ends protruding beyond the package are used as surplus, and the opening to which this surplus is bonded is sealed It is.

As a flexible film which comprises the film packaging bag 10, the general purpose thing used for this kind of film packaging bag 10 can be used, For example, a polypropylene resin film, a polyethylene resin film, a polyethylene terephthalate resin film is used. 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 linear or linear short chain branched polyethylene resin composition film can be used. A laminate film of polyethylene terephthalate and a linear or linear short chain branched polyethylene resin composition is suitable.
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 the other 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 in accordance with JIS P 8118 (1998) of 20 to 60 μm, and a handle conforming to JIS L 1096 (2010) E method. The softness measured based on the ohmmeter method is 5.0 to 50.0 cN, more preferably, the thickness is 15 to 40 μm, and the softness is 10.0 to 30.0 cN. It is said. When the thickness of the flexible film is less than 20 μm, there is a problem that it is easily broken during use. When the thickness is more than 60 μm, it is difficult to make the softness 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 taking out, and the desired effect is obtained by increasing the taking out resistance. It becomes difficult to be.

In the case of 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 a soft property. 0.0 cN or less is preferable.

[About the exit]
The width W3 of the take-out port of the present invention is 78% to 96% (preferably 86% to 95% is preferable) with respect to the width W2 of the thin paper bundle 20; 15% to 28% (18% to 25% is particularly desirable).

Examples of the outlet 15 of the present invention include the

outlets

15 and 15A to 15D opened by excision shown in FIGS. 1 to 5 and the outlet 15J shown in FIG. 7C as long as the depth C3 is provided. Can be mentioned.

As the outlet 15 of the present invention, the

outlets

15E and 15F shown in FIGS. 6A and 6B and the

outlets

15G and 15H shown in FIGS. It may be an example.
In this case, the slit opening may be formed continuously in advance, but may be formed by intermittent perforations, and the slit opening may be formed when the user breaks.

(Embodiment of outlet shape)
As shown in FIGS. 1, 2 </ b> A, and 5 </ b> A, the outlet 15 in the first embodiment has

circular arcs

15 a and 15 a at both ends in the width direction.

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 part having a length of 5 mm or more as the outermost 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 ends of an extraction port are demonstrated based on FIG.
That is, the radius of curvature (the center of curvature in the illustrated example is on the right side in the illustrated example) is 5 mm in the range of 5 mm in the front and rear in at least the depth C3 range including the outermost edge (left edge in FIG. 5) as the center. It is desirable that the above curve or the condition that the outermost edge itself has a straight line portion of 5 mm or more is satisfied.

More specifically, the radius of curvature R is at least in the range of 5 mm before and after the depth direction among the range CS in the depth direction including the outermost edge of the outlet 15 (the edge indicated by the two-dot chain line at the left end in 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 curvature radius R of 5 mm or more includes a curve having an infinite curvature radius R, and a curve having an infinite curvature radius R is substantially the same as a straight line, but the curvature radius R is infinite. Since a large curve and a straight line have at least different concepts, they are defined separately in this specification.

A curve having a radius of curvature of less than 5 mm or a straight portion of less than 5 mm as the end edge in a range of at least 5 mm before and after the depth C3 including the outermost edge (left edge in FIG. 5) as the center. Means that the outlet is acute in the vicinity of the outermost edge.
In this case, the take-out resistance value of the tissue paper is increased at the acute end edge, and the take-out property tends to be deteriorated.
Further, when the film packaging bag 10 is easy to tear (low tear strength) as a material of the film packaging bag 10, the film packaging bag is likely to tear from the outermost edge of the outlet when the thin paper is taken out. There is a tendency.

Therefore, a curve having a radius of curvature of 5 mm or more, or a straight portion having a length of 5 mm or more as the end edge, at least in the range of 5 mm before and after the depth C3 including the outermost edge (left edge in FIG. 5) as the center. Satisfying the above conditions is a condition to be emphasized in the selection of the embodiment even if the depth C3 of the outlet 15 is 15% to 28% with respect to the depth C2 of the thin paper bundle 20.

The end of the outlet 15 in FIG. 5 (A) is a circular arc, but may have a straight portion as shown in (B), and almost the entire end may be straight as shown in (C). A curve having a plurality of radii of curvature (r1, r2, r3...) As shown in FIG.

On the other hand, it may be a slit opening having a curved portion such as a circular arc at the end, like the

outlets

15E and 15F shown in FIGS. In this case, each curved portion is directed to the opposite side in the depth direction.

Further, as in the case of the

outlets

15G and 15H shown in FIGS. 7A and 7B, the curved portions at the end portions may be oriented in the same direction in the depth direction.

The intermediate slit ports along the width direction connecting the end portions are straight at the

outlets

15E and 15F shown in FIGS. 6A and 6B and the outlet 15G shown in FIG. 7A, but FIG. A swollen curve may be used, such as an 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 outlet 15F in FIG. 6B, the peripheral length of the end is long and approaches the intermediate slit opening with a distance G, but the position in the width direction when taking out the tissue paper may be shifted, This viewpoint is difficult to recommend.
Further, the edge of the intermediate outlet may be a swollen curve, as shown by the outlet 15J shown in FIG.

In the conventional example, as shown in FIG. 8, in the case of using the slit opening S formed by opening the perforation, when the number of remaining sets decreases when the removal from the slit opening S is repeated, the 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 thin paper 2 of the set that is currently being taken out and the inner surface of the upper surface of the film packaging bag 10 is increased, and the resistance to take out due to the friction generated between them is increased. The phenomenon is seen. That is, when the number of remaining sets decreases, the upper surface of the film packaging bag 10 is deformed into a mountain shape toward the slit opening S 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 value is increased, and the take-out property 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, and the remaining number of sets. As shown in FIG. 3, a change in the shape of the upper surface of the film packaging bag 10 (lifting of the upper surface of the film packaging bag 10) can be suppressed. As a result, tissue paper can be stably taken out from the outlet 15 until the final set, so that the thin paper is not broken and the thin paper packaging product 1 itself is not lifted.

The thin paper bundle 20 according to the embodiment is formed by stacking two layers of rectangular thin paper, and the layers of the folded pieces are alternately stacked so that the edges of the folded pieces are positioned on the folded inner surface of the adjacent thin paper. When one folded piece located at the upper side is pulled upward, the other folded piece immediately adjacent to the folded piece is a so-called pop-up type thin paper bundle 20 that is pulled upward and lifted. Such a thin paper bundle 20 can be manufactured by a multi-stand type or rotary type known interfolder. However, the thin paper bundle 20 of the present invention is not limited to such a pop-up thin paper bundle 20, and may be a simple stack of square tissue paper folded in two. These thin paper bundles 20 have a substantially rectangular parallelepiped shape.

The number of thin paper sheets 2 constituting the thin paper sheet bundle 20 is not limited. However, in the tissue paper product, the number of the thin paper sheets 2 is generally 90 to 240 sets with two plies (two stacked) as one set. Similarly, the thin paper package product 1 can be 90 to 240 sets.

Each thin paper 2 constituting the thin paper bundle 20 has a ply structure in which two to three thin papers having a crepe are laminated to form a set. The thin paper 2 may be a dry type, or a wet type impregnated with a polyol-based chemical solution.

As a raw material pulp of the thin paper constituting the thin paper 2, NBKP and LBKP are blended. Although waste paper pulp may be blended, it is preferable that it is composed only of NBKP and LBKP in terms of texture and the like. The blending ratio is preferably NBKP: LBKP = 20: 80 to 80:20, and particularly preferably NBKP: LBKP = 30: 70 to 60:40.

The basis weight per thin paper constituting each ply of the thin paper 2 is 9.0 to 20.0 g / m ² . A preferable general-purpose type in the thin paper 2 of this embodiment is 10.0 to 14.0 g / m ² . The basis weight here refers to that based on the measurement method of JIS P 8124 (1998). Further, the thickness of the thin paper 2 is 100 to 170 μm, more preferably 100 to 140 μm in a 2-ply state. The paper thickness here is that after the specimen is fully conditioned under the conditions of JIS P 8111 (1998), the dial thickness gauge (thickness measuring instrument) “PEACOCK G type” (manufactured by Ozaki Seisakusho) is used under the same conditions. The value measured in the state of using 2 plies.

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

The thickness of the film packaging bag 10 is preferably 20 to 60 μm, and more preferably 30 to 50 μm. When the thickness of the film packaging bag 10 is less than the above range, the strength is easily reduced and it is easily broken, and when the thickness exceeds the above range, it may be difficult to open at the break line, or the heat sealing process may not be performed cleanly in terms of operation.
The elongation in the CD direction of the film packaging bag 10 is preferably 10 to 300%, more preferably 40 to 250%, and even more preferably 80 to 150%. When the elongation in the CD direction of the film packaging bag 10 is less than the above range, the breaking line may pass through the seal part at the time of opening and reach the end, and the package may be easily broken. 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, more preferably 1000 to 4000 mN. When the tear strength in the MD direction of the film packaging bag 10 is less than the above range, the breaking line may pass through the seal part at the time of opening and reach the end, and the package may be easily broken. It tends to be difficult to open with a wire.

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 according to JIS P 8118 (1998).
The tensile strength and elongation in the CD direction of the film packaging bag 10 are measured in accordance with JIS P 8113 (2006). The tensile strength and elongation can be measured using, for example, a tensile strength measuring instrument (SE-062) manufactured by the former Lorentzen & Wettre. Specifically, a strip-shaped sample having a width of 50 mm in the MD direction and a long length in the CD direction is prepared, a slit having a length of 40 mm along the MD direction is inserted in the center of the sample in the longitudinal direction, and the sample is pulled 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 in the MD direction of the film packaging bag 10 is measured according to JIS P 8116 (2000). For the tear strength, for example, an Elmendorf-type tear strength tester (SE-009) manufactured by the former Lorentzen & Wettre company can be used. Specifically, a strip-shaped sample with a width of 63 mm in the MD direction and a long length in the CD direction is set, and a cut along the MD direction is formed at the center in the longitudinal direction of the sample with a knife provided in the tear strength tester. And tear and measure in the MD direction. Cut the length of the cut by 20 mm.

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

Regarding the take-out resistance value of the thin paper, the take-out resistance value of the 10th set is preferably 60 gf or less, particularly 52 gf or less, and more preferably less than 50 gf.

Here, the extraction resistance value is measured 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 clamped by a clip 21 (trade name: Eye Clip Crea 17 manufactured by KOKUYO). Specifically, a circular mark 23 having a diameter of about 1 mm is attached with a water-based pen at a position 10 mm from the center in the width direction side of the thin paper 2 and the end in the take-out direction, and the longitudinal direction of the sandwiched portion of the clip 21 is the thin paper 2 Clamping is performed in parallel with the width direction so that the center of the clamping portion coincides with the circle 23.
A hook 22a of a push-pull gauge 22 (product name: Digital Force Gauge DPS-20) is passed through a hole of one pressing portion 21a of the clip 21, and the push-pull gauge 22 is pulled upward. 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 resistance value during the taking-out operation is taken as the take-out resistance value.
In the measurement, the first to tenth sets of thin paper 2 are taken out from the top layer 10 times, and the average value of the 10th set of each time is calculated.

Next, examples and comparative examples of the thin paper packaging product 1 according to the present invention will be shown to clarify the effects of the present invention.

(Commercial goods)
For all commercially available film packaging bags containing 150 pairs (one set of 2 sheets) of tissue paper, the removal property was evaluated based on the “removal resistance value” and “number of film floating (packaging lifting))”.
Here, the “removal resistance value” was measured for each of the first group, the fifth group, the tenth group, the 25th group, and the 50th group. ”Only in the table.
In addition, the “number of film floating (packing bag lifting) occurrences” is determined when the film packaging bag changes its shape on the top surface of the film packaging bag, the outlet is deformed, and the film packaging bag floats (lifts). The number of groups in which the part is completely lifted from the desk or floor.
Other removability is described in the remarks.
As shown in Table 1, when the perforation is opened, the slit opening is formed with a depth of 0 mm. In all cases, the number of remaining sets decreases, and when the product weight is taken out and the resistance value is exceeded, “film floating” occurs. Arise.

(Comparison between prototype and comparative product)
Prototypes and comparative products in which the width direction of the slit opening and the packaging form were changed and comparative products were prepared (150 sets (two sets of 1 set)), and the take-out property was evaluated. The basis weight of the thin paper is 10.9 g / m ² and is common.
As shown in Table 1, there is a tendency for the extraction resistance value to increase as the width direction length of the outlet decreases (comparison between prototype 1 and comparative product 1). In addition, as with the comparative product 2, it is possible to reduce the take-out resistance value by further reducing the length in the width direction and extending the length in the width direction, but the tissue paper is constricted because the length in the width direction is too short. This is the result of clogging, and the float of the film packaging bag cannot be improved. This is presumed that the side edge of the tissue paper in the width direction comes into contact with the end of the slit opening, and the resistance at that time is added as an extraction resistance value.

(Prototypes 1 to 4)
Prototypes with different film material and film thickness were created with the same outlet dimensions, and the removal property was evaluated.
As shown in Table 1, if the film outlet and the film thickness are within the specified range with the extraction port being constant, the extraction resistance value is suppressed and the film is not lifted, but the extraction resistance is caused by excessively thick film. The value increases and film floating occurs.

(Comparison between prototypes 2 to 4 and comparative products 4 to 5) For comparative product 4 in which the width direction is further increased from the outlet ratio, which is outside the scope of the present invention, the thin paper sheet bundle is removed because the outlet is too large. I got out of the exit, and I couldn't get it to the end. Moreover, about the comparative product 5 which narrowed the depth direction, taking-out property fell and generation | occurrence | production of the film floating was confirmed.

DESCRIPTION OF SYMBOLS 1 ... Thin paper packaging product, 2 ... Thin paper, 10 ... Film packaging bag, 15 ... Outlet, 15a ..., 16 ... Storage space, 17 ... End in the width direction, 19 ... Sealing part, 20 ... Thin paper Bundle, 21 ... clip, 21a ... pressing part 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

A film packaging bag formed of a flexible film, and a thin paper bundle stored inside the film packaging bag,
On the upper surface of the film packaging bag, an outlet is formed along the width direction of the thin paper bundle,
The soft paper has a softness measured based on a handle ohm method according to JIS L 1096 (2010) E method of 1.0 to 4.0 cN,
As for the basis weight of the thin paper, a plurality of thin papers having a basis weight of 9.0 to 20.0 g / m 2 measured based on JIS P 8124 (1998) are pop-up type from the outlet. It is formed by being stacked so that it can be taken out one by one,
The film forming the film packaging bag has a thickness measured according to JIS P 8118 (1998) of 20 to 60 μm, and is measured based on a handle ohm method according to JIS L 1096 (2010) E method. The softness is 5.0 to 50.0 cN,
The width of the outlet is 78% to 96% with respect to the width of the thin paper bundle,
The depth of the outlet is 15% to 28% with respect to the depth of the thin paper bundle,
Thin paper packaging product characterized by that.
Each end of the outlet has a curved line with a radius of curvature of 5 mm or more, or a straight line part of 5 mm or more as the end edge in a range of at least 5 mm before and after the depth including the most end edge as a center. Wrapping paper packaging product as described.
The thin paper packaging product according to claim 1, wherein the outlet is opened by excision.
The thin paper packaging product according to claim 1, wherein the outlet is formed by a slit arranged along the width direction.
The thin paper packaging product according to claim 4, wherein the outlet has an S shape in plan view.
The thin paper packaging product according to claim 4, wherein the end of the outlet is located on the same side in the depth direction.
The thin film packaging product according to claim 1, wherein the film is made of at least one of polyethylene and polypropylene.