CN117141925A - Bag-making material - Google Patents

Abstract

The invention provides a bag making material capable of being stably supplied. The bag-making material (10) is provided with a storage section (2) and an extension section (3). The protruding part (3) has: a seal part (31) formed by bonding part of paper materials facing in the thickness direction crossing both the length direction and the width direction; a non-sealing portion (32) at which other portions of the paper materials, excluding a portion, of the portions facing in the thickness direction are not bonded to each other, and at which an internal passage (3A) that communicates with the internal space (2A) and is capable of ventilation is formed between the paper materials facing in the thickness direction; and a hole (3H) which is formed by penetrating the paper material of the part of the extension (3) except for a part and other parts in the thickness direction, and which communicates with the outside and with the internal passage (3A).

Description

Bag-making material

Technical Field

The present invention relates to a strip-shaped bag-making material supplied during bag manufacture.

Background

As one of materials for producing bags, a tubular bag-producing material folded in a band shape is known. As such a bag-making material, the following materials are mentioned: the cut portion is formed into a bag by cutting at predetermined lines of cutting provided at predetermined intervals corresponding to the size of the bag to be manufactured in the longitudinal direction.

As an example of a technique using the above-described bag-making material, the following technique has been proposed: the bag-making material wound in a roll is fed while being sandwiched between a pair of rollers, and the bag-making material fed by the feeding is subjected to a process of adsorbing and unwinding a part, a cutting process at a line to cut, or the like (see patent document 1).

Patent document 1: japanese patent laid-open No. 2006-69630

However, as described above, if air is present in the interior of the tubular bag-making material (so-called in-tubular), the supply of the bag-making material may become unstable due to the air in the interior. For example, when a bag-making material provided with a portion to which a portion is attached in advance is supplied, the air in the bag-making material is blocked by the attached portion, and the bag-making material expands and deforms, which may cause wrinkles or twists of the bag-making material, or even may cause the bag-making material to separate from the supply path.

Therefore, there is room for improvement in providing a bag-making material that can be stably supplied.

Disclosure of Invention

The present invention has been made in view of the above problems, and an object thereof is to provide a bag-making material that can be stably supplied. The present invention is not limited to this, and other objects can be achieved by positioning the device that can exhibit the functions and effects derived from the respective configurations shown in the "specific embodiments" described later, that is, the functions and effects that cannot be obtained in the prior art.

The bag-making material disclosed herein has the following structures (1) to (5).

(1) A bag-making material comprising a paper material, wherein a bag portion, which is a portion of a side-folded bag formed with a bag-opening portion, is arranged in a longitudinal direction intersecting the width direction across a line to cut along the width direction, the side-folded bag having a flat-plate-shaped protruding portion protruding from a three-dimensional storage portion for storing contents, the bag-making material having a strip shape along both the longitudinal direction and the width direction and being tubular,

it is characterized in that the method comprises the steps of,

the bag-making material is provided with:

a housing portion that is a portion of the bag portion corresponding to the housing portion, is disposed adjacent to the line to cut on one side in the longitudinal direction, and has an internal space corresponding to a space for housing the content; and

a protruding portion that is a portion of the bag portion corresponding to the protruding portion, the protruding portion being disposed adjacent to the other side in the longitudinal direction with respect to the line to cut, and being disposed adjacent to the one side in the longitudinal direction with respect to the housing portion,

the protruding portion has:

a seal part formed by bonding a part of the paper material facing in a thickness direction intersecting both the longitudinal direction and the width direction;

a non-sealing portion at which other portions of the paper materials than the portion in the portion facing in the thickness direction are not bonded to each other, and at which the paper materials facing in the thickness direction form an internal passage that communicates with the internal space and is capable of ventilation therebetween; and

and a hole portion that is formed by penetrating the paper material in a portion of the protruding portion other than the portion and the other portion in the thickness direction, the hole portion being in communication with the outside and the internal passage.

(2) The bag-making material according to (1), wherein,

the non-sealing portion is disposed at the other portion where only two layers of the paper material are provided in the thickness direction.

(3) The bag-making material according to (1) or (2), characterized in that,

the non-sealing portion is disposed at the other portion where four layers of the paper material are provided in the thickness direction.

(4) The bag-making material according to any one of (1) to (3), characterized in that,

the hole portion is provided as a hand-held hole penetrating through the protruding portion.

(5) The bag-making material according to any one of (1) to (4), characterized in that,

at the hole portion, the paper material at a portion other than the portion and the other portion of the protruding portion is provided on one side in the thickness direction, and only the other side in the thickness direction penetrates in the thickness direction.

According to the present invention, a bag-making material that can be stably supplied can be provided.

Drawings

Fig. 1 is a top view showing a bag-making material of one embodiment.

Fig. 2 is a schematic diagram showing a portion as viewed along the II-II arrow of fig. 1.

Fig. 3 is a schematic diagram showing a portion as viewed along the III-III arrow of fig. 1.

Fig. 4 is a schematic diagram showing a portion as viewed along the IV-IV arrow of fig. 1.

Fig. 5 is a perspective view showing an edge fold bag made from one embodiment of the bag making material.

Fig. 6 is a plan view showing a main part of a bag-making material according to modification 1.

Fig. 7 is a schematic diagram showing a portion as viewed along the VII-VII arrow of fig. 6.

Detailed Description

The bag-making material according to the embodiment will be described below.

The bag-making material of the present embodiment is a band-shaped material supplied for producing an edge folding bag, and is made of a paper material. The side folding bag manufactured by the bag manufacturing material accommodates the contents as the object of packaging.

In the following embodiments, a roll toilet paper is exemplified as the content contained in an edge folding bag made of a bag making material. However, the content contained in the present side folding bag is not limited to roll toilet paper, and may be household toilet paper such as tissue paper and kitchen paper roll, or may be other articles.

In the present embodiment, the directions for explanation are defined as follows.

In the description of the side folding bag, the vertical direction and the horizontal direction orthogonal (intersecting) to each other are used on the premise that the side folding bag is placed on the horizontal plane.

The longitudinal direction is a direction along both a lower direction (denoted as "D" in the drawing) in which gravity acts and an upper direction (denoted as "U" in the drawing) which is the opposite direction of the lower direction. The lateral direction is a direction along the horizontal direction. The lateral direction is a direction along four directions of a front direction (denoted as "F" in the drawings), a rear direction (denoted as "B" in the drawings), a left direction (denoted as "L" in the drawings), and a right direction (denoted as "R" in the drawings). The front and rear directions are directions facing opposite directions to each other, and the left and right directions are directions facing opposite directions to each other, and the front-rear direction and the left-right direction are orthogonal (intersecting) to each other.

In the explanation of the bag-making material, the longitudinal direction, the width direction (denoted as "CD" in the drawings), and the thickness direction (denoted as "TD" in the drawings) which are orthogonal to each other are used.

The longitudinal direction and the width direction are directions along the direction in which the bag-making material extends in a strip shape.

The longitudinal direction is a direction corresponding to the longitudinal direction of the edge folding bag, and is along the feeding direction of the bag-making material (denoted as "MD" in the drawings). The feeding direction is a so-called "sheet feeding direction". Upstream and downstream are determined based on the feeding direction of the bag-making material. The direction toward the upstream side in the feeding direction of the bag-making material is set to one side in the longitudinal direction, and the direction toward the downstream side in the feeding direction of the bag-making material is set to the other side in the longitudinal direction.

The width direction is a direction corresponding to the width of the band formed by the bag-making material, and also a direction corresponding to the width of the side-folded bag. Either one of the left and right sides of the side gusset corresponds to one side in the width direction, and the other one of the left and right sides of the side gusset corresponds to the other side in the width direction.

The thickness direction is a direction penetrating the bag-making material, and is also a direction corresponding to the front-rear direction of the side folding bag. Either the front or the rear of the side folding bag corresponds to one side in the thickness direction, and the other corresponds to the other side in the thickness direction.

[ I ] one embodiment ]

In the following embodiment, the structure related to the bag-making material will be described with reference to item [1 ]. The action and effect of the structure of item [1] are then described in item [2 ].

[1. Structure ]

In the present item [1], the structure of the edge-folded bag manufactured from the bag-making material is summarized by the small item [1-1], and then the structure of the bag-making material is described in detail by the small item [1-2 ]. Hereinafter, side-folded bags symmetrical in the front-rear direction and symmetrical in the left-right direction are exemplified, and bag-making materials symmetrical in the width direction are exemplified.

[1-1. Edge folding bag ]

As shown in fig. 5, the side folding bag 1' is a bag with a stay portion extending from the housing portion 2' to the holding portion 3' (extending portion). The housing portion 2 'is a three-dimensional portion for housing the roll toilet paper 9'. The holding portion 3 'is a portion protruding upward in a flat plate shape from the housing portion 2'. The hand-held portion 3 'is provided with a hand-held hole 3H' penetrating in the front-rear direction. The hand-held hole 3H 'is a through hole provided for facilitating the hand of a user who wants to carry the edge folding bag 1' to hang and carry.

If the side folding bag 1' is applied to a gable-top (gable-top) milk box, the prismatic portion filled with milk corresponds to the housing portion 2', and the portion subjected to top sealing corresponds to the hand-held portion 3 '.

In the side folding bag 1' illustrated here, paper materials constituting four portions 1F ', 1B ', 1L ', 1R ' listed below are attached, respectively.

Front face 1F': a part arranged in front of the edge folding bag 1

Back face 1B': is arranged at the rear part of the side folding bag 1

Left fold 1L': is arranged at the left part of the side folding bag 1

Right fold 1R': is arranged at the right part of the side folding bag 1

Left and right side folds 1L ', 1R' are arranged between the front face 1F 'and the rear face 1B'.

The side folds 1L ', 1R' are portions forming a folded portion in the side folded bag 1', and have a valley fold line 1V' extending in the up-down direction at an intermediate portion in the front-back direction. The edge folds 1L ', 1R ' are provided so as to be foldable at the valley fold line 1V '.

In a state where the valley folds at the valley fold line 1V ' are unfolded, the front surface portion 1F ' is separated from the back surface portion 1B ', and a space for accommodating the roll toilet paper 9' is formed inside the side folding bag 1'. In the thus unfolded state, the roll toilet paper 9 'is accommodated in the edge folding bag 1'.

On the other hand, in a state where the edge folding portions 1L ', 1R ' are valley-folded at the valley-fold line 1V ', the front surface portion 1F ' is close to the back surface portion 1B ', and a space capable of accommodating the roll toilet paper 9' is not formed inside the edge folding bag 1'. The folded-in state is a state in which the edge folding bag 1 'is folded into a sheet shape, and is, for example, a state used when the edge folding bag 1' is stored.

The above-described side folding bag 1' is manufactured from a bag-making material described below in order.

1-2 bag-making Material

As shown in fig. 1, the bagging material 10 is a material that extends in a strip. In this bag-making material 10, the bag portions 1, which are the portions corresponding to the side-folded bags 1' to be manufactured, are arranged in the longitudinal direction, and a line C (indicated by a two-dot chain line in fig. 1) to cut along the width direction is provided at the boundary between the bag portions 1.

Each pocket 1 is provided with a storage portion 2 corresponding to the storage portion 2 'of the side folding pocket 1', and a holding portion 3 (extension portion) corresponding to the holding portion 3 'of the side folding pocket 1'.

In the present bag-making material 10, the housing portion 2 is disposed adjacent to the line to cut C on the upstream side in the feeding direction (one side in the longitudinal direction), and the hand-held portion 3 is disposed adjacent to the line to cut C on the downstream side in the feeding direction (the other side in the longitudinal direction). That is, in the bag making material 10, the storage sections 2 and the holding sections 3 are alternately arranged in the longitudinal direction.

As described above, the bag-making material 10 in which the bag portions 1 are arranged in the longitudinal direction across the line to cut C is subjected to the bag-making process as follows: a process of expanding the housing portion 2 of each pocket 1 or a cutting process performed at the line to cut C. Thus, the edge folding bag 1' is manufactured in this order.

As shown in fig. 2 to 4, the present bag-making material 10 is provided in a tubular shape formed by bonding four materials 1F, 1B, 1L, 1R, which will be described below. These materials 1F, 1B, 1L, 1R are bonded into a tube shape, and then folded in a band shape, thereby forming the bag-making material 10.

Front material 1F: material provided on one side in the thickness direction in bag-making material 10

Back material 1B: material provided on the other side in the thickness direction in the bag-making material 10

Left folded material 1L: material arranged on one side in the width direction in the bag making material 10

Right folded material 1R: material arranged on the other side in the width direction in the bag making material 10

The regions of the materials 1F, 1B, 1L, and 1R extending in the longitudinal direction are the same as the regions of the bag-making material 10 extending in the longitudinal direction. In addition, the regions where the front surface material 1F and the back surface material 1B extend in the width direction are the same as the regions where the bag-making material 10 extends in the width direction. On the other hand, the region in which the left side gusset material 1L extends in the width direction extends only in the region on one side in the width direction from among the regions in which the bag making material 10 extends in the width direction. In addition, the region in which the right side gusset material 1R extends in the width direction extends only in the region on the other side in the width direction from among the regions in which the bag making material 10 extends in the width direction.

The front material 1F and the back material 1B are each a material that extends in a planar shape without being folded (without folds or folding lines).

On the other hand, the edge folding materials 1L, 1R are folded in half at the valley folding line 1V, respectively, and sandwiched between the front surface material 1F and the back surface material 1B in a state where two layers of one layer and the other layer are formed with respect to the valley folding line 1V. The left side folded material 1L and the right side folded material 1R are arranged with a gap therebetween in the center in the width direction.

The bag-making material 10 in which the materials 1F, 1B, 1L, and 1R are arranged as described above is roughly divided into the following two portions according to the number of layers of the materials 1F, 1B, 1L, and 1R.

Four layer part P4: the front surface material 1F, the back surface material 1B, and the folded edge material 1L or 1R are overlapped in four layers

Two-layer part P2: the part where the front material 1F and the back material 1B are overlapped in two layers

The four-layer portion P4 is a portion of the bag making material 10 other than the region in the width direction center where the edge folding materials 1L, 1R are not provided, and the four-layer portion P4 is provided on one side and the other side in the width direction, respectively.

Focusing on one side in the width direction, in the four-layer portion P4, a total of four layers are laminated, namely, one layer formed of the front surface material 1F, two layers formed of the left folded material 1L folded in half at the valley fold line 1V, and one layer formed of the back surface material 1B.

In the two-layer portion P2 to be described later, only two layers of the front surface material 1F and the back surface material 1B are provided in the thickness direction, with respect to the four-layer portion P4 in which the four layers of the materials 1F, 1B, 1L, 1R are provided in the thickness direction as described above.

The two-layer portion P2 is a portion of the bag material 10 where the region at the widthwise center of the side folding materials 1L, 1R is not provided. In the two-layer portion P2, a total of two layers, that is, one layer formed of the front surface material 1F and one layer formed of the back surface material 1B are laminated, and the front surface material 1F and the back surface material 1B face each other in the thickness direction without sandwiching the side materials 1L, 1R.

The front material 1F includes a portion that becomes the front portion 1F 'in the description of the side folding bag 1'. The back material 1B includes a portion of the back surface 1B 'that becomes the side gusset 1'. Similarly, the edge folding materials 1L and 1R include portions to be edge folds 1L ' and 1R ' of the edge folding bag 1'.

The above-described materials 1F, 1B, 1L, and 1R are different from each other in the form of being bonded to the housing portion 2 of each bag portion 1 and the form of being bonded to the hand-held portion 3.

The materials 1F, 1B, 1L, and 1R may be made of various known paper materials, and various bag-making materials mainly composed of paper may be used.

In one embodiment illustrated here, as the front surface material 1F and the back surface material 1B, a single-sided laminated paper having a thermoplastic fusion layer laminated on the back surface and no thermoplastic fusion layer laminated on the front surface is used. On the other hand, for the left and right edge folding materials 1L, 1R, a double-sided laminated paper having thermoplastic fusion layers laminated on both the back surface and the front surface is used.

However, not only the left and right side folding materials 1L, 1R, but also the front surface material 1F and the back surface material 1B may be double-sided laminated papers. Alternatively, the materials 1F, 1B, 1L, and 1R may be materials in which a sealing material is applied to a portion including a bonded portion.

That is, the functional agent for bonding may be added to at least the bonded portion of the materials 1F, 1B, 1L, and 1R.

As shown in fig. 2, the housing portion 2 is provided with a sealing layer 2S for bonding the materials 1F, 1B, 1L, 1R to each other only at the end edge in the width direction.

Focusing on the detailed description of one side in the width direction, two kinds of sealing layers 2S (indicated by mesh points in fig. 1 and 2) shown below are provided in the housing portion 2.

First sealing layer 21S: sealing layer 2S for bonding front material 1F and left folded material 1L

Second sealing layer 22S: sealing layer 2S for bonding back surface material 1B and left edge folding material 1L

The housing portion 2 formed by bonding the materials 1F, 1B, 1L, 1R by the seal layer 2S has an internal space 2A corresponding to the space in which the roll toilet paper 9 'is housed in the edge folding bag 1'. The internal space 2A is a space in the cylinder surrounded by the materials 1F, 1B, 1L, 1R, and may be said to be a space in the housing portion 2 in most of the portions except the end edge portions in the width direction. When the bag portion 1 is folded to the side bag 1', the space 2A is expanded to a size capable of accommodating the roll toilet paper 9' by separating the front surface material 1F from the back surface material 1B while unfolding the valley folds of the valley fold lines 1V of the side fold materials 1L and 1R.

As shown in fig. 3, a seal layer 3S for bonding the materials 1F, 1B, 1L, and 1R to each other is provided in the hand-held portion 3 in most part (part) in the width direction.

In the hand-held portion 3 illustrated in one embodiment, the sealing layer 3S (indicated by mesh points in fig. 1 and 3) is provided only in the four-layer portion P4. Focusing on the detailed description of one side in the width direction, three kinds of sealing layers 3S listed below are provided.

First sealing layer 31S: sealing layer 3S for bonding front material 1F and left folded material 1L

Second sealing layer 32S: sealing layer 3S for bonding back surface material 1B and left edge folding material 1L

Third sealing layer 33S: sealing layer 3S for bonding half portions of left edge folding material 1L with valley folding line 1V therebetween

In the hand-held portion 3, the sealing portions 31 are portions bonded by the sealing layers 31S, 32S, and 33S. Then, in the hand-held portion 3, in addition to the seal portion 31, a non-seal portion 32 in which the front face material 1F and the back face material 1B facing in the thickness direction are not bonded to each other is provided. Further, in the description of the side folding bag 1', the hole portion 3H corresponding to the above-described hand-held hole 3H' is also provided in the hand-held portion 3. That is, as the holding hole 3H 'of the holding portion 3', a hole portion 3H is provided.

In the hand-held portion 3 illustrated in fig. 1, the seal portion 31 and the non-seal portion 32 are provided in most of the longitudinal direction, and the hole portion 3H is arranged in the longitudinal direction region in which the seal portion 31 and the non-seal portion 32 are provided. The holding portion 3 is provided with a margin portion 30 on the upstream side in the feeding direction with respect to the sealing portion 31 and the non-sealing portion 32.

The margin portion 30 is provided so as to expand the housing portion 2 even when the bag making material 10 is cut slightly downstream in the feeding direction with respect to the line to cut C. The margin portion 30 is bonded to the housing portion 2 in the same manner as the housing portion 2, and is provided between the sealing portion 31 and the non-sealing portion 32 and the line C to cut. In other words, the position of the line to cut C is set slightly upstream in the feeding direction with respect to the sealing portion 31. The margin portion 30 may be directly left without being cut out in the process of manufacturing the edge folding bag 1', but is preferably cut out in the same manner as the edge material portion 23 described later.

The seal portion 31 is a portion where all the materials 1F, 1B, 1L, 1R facing in the thickness direction are bonded together, and is provided in the four-layer portion P4 in the hand-held portion 3. The seal 31 formed by bonding all the materials 1F, 1B, 1L, and 1R of the four-layer portion P4 can be said to be a portion that plays a role of securing the strength of the grip portion 3. Thereby, the strength of the hand-held portion 3 'in the edge-folded bag 1' manufactured from the bag-making material 10 is ensured.

The non-sealing portion 32 is a portion where the front face material 1F and the back face material 1B facing in the thickness direction are not bonded to each other, and is provided in the two-layer portion P2 in the hand-held portion 3. In other words, the non-sealing portion 32 is a portion of the region (other portion) of the hand-held portion 3 excluding the margin portion 30 and the sealing portion 31, of the region where at least a part of the materials 1F, 1B, 1L, 1R face in the thickness direction. In fig. 1, an example is illustrated in which the non-sealing portion 32 is provided in the entire region of the two-layer portion P2.

An internal passage 3A that communicates with the internal space 2A of the housing portion 2 and is capable of circulating air is formed between the front surface material 1F and the back surface material 1B in the non-sealing portion 32. The internal passage 3A illustrated here is provided to extend in the longitudinal direction.

The internal space 2A of the housing portion 2 is present in most part except the end edge portion in the width direction, whereas the internal passage 3A of the unsealed portion 32 is a part of the center in the width direction, and therefore the internal space 2A can be said to be a wide flow passage (large passage), and the internal passage 3A can be said to be a narrow flow passage (narrow passage).

The unsealed portion 32 in which the internal passage 3A is formed as described above communicates with the hole 3H described below.

As shown in fig. 4, the hole 3H is a portion where no element facing in the thickness direction is present, and is a portion where the margin portion 30, the seal portion 31, and the non-seal portion 32 are removed from the hand-held portion 3. The hole 3H is provided in the hand-held portion 3 so as to penetrate in the thickness direction, and communicates with the outside and the internal passage 3A.

To summarize the internal space 2A, the internal passage 3A, and the hole 3H, a flow passage provided in the hand-held portion 3 in the longitudinal direction is the internal passage 3A for guiding air in the internal space 2A to the hole 3H. In order to discharge the air in the internal passage 3A to the outside, a flow passage which communicates with the internal passage 3A and which penetrates at least a part of the materials 1F, 1B, 1L, 1R in the hand-held portion 3 and is provided so as to communicate with the outside is a hole portion 3H. In other words, the internal space 2A, the internal passage 3A, and the hole 3H are provided so that the air in the internal space 2A flows in the longitudinal direction and is discharged to the hole 3H of the hand-held portion 3 instead of the housing portion 2.

The housing portion 2 is thinned into three portions which are arranged in this order from the upstream side toward the downstream side in the feeding direction, namely, the main portion 21, the bottom seal portion 22, and the trim portion 23.

The main portion 21 is a portion corresponding to a portion provided in the edge folding bag 1 'facing the roll toilet paper 9'. The bottom seal 22 is a portion to be bonded after the roll toilet paper 9' is stored in the main portion 21. The rim charge portion 23 is a portion cut out after the bottom seal portion 22 is bonded.

The rim charge portion 23 of the bag-making material 10 illustrated here is provided with a hole portion 2H penetrating in the thickness direction. Such an example is shown in fig. 1: the hole portion 2H is provided in a region in which the two-layer portion P2 in the width direction extends. However, the hole portion 2H may be provided in the bottom seal portion 22 or may be provided in a region where the four-layer portion P4 in the width direction extends.

In addition, from the viewpoint of preventing foreign matter from being mixed into the housing portion 2' after the bag is made, it is preferable that the main portion 21 of the housing portion 2 is not provided with a structure that penetrates at least a part of the materials 1F, 1B, 1L, 1R like the hole portions 2H, 3H.

[2. Action and Effect ]

Conventionally, if air exists in a bag-making material formed in a tubular shape and folded in a band-like shape, the supply of the bag-making material may become unstable due to the air inside. For example, when a bag-making material provided with a portion to which a portion is attached in advance is supplied, the air in the interior is blocked by the attached portion, and the bag-making material expands and deforms, which may cause wrinkles or twists of the bag-making material, or even cause the bag-making material to separate from the supply path. Alternatively, since the bag-making material is cut at a position deviated from the line to cut, there is a possibility that the pitch of the bags cut from the bag-making material may deviate. In the case where a pair of rollers for sandwiching and mounting the bag-making material is used for supplying the bag-making material, there is a possibility that the bag-making material cannot be supplied when a large amount of air accumulated in the bag-making material is blocked by the portion to be bonded in advance and expands.

Therefore, there is room for improvement in providing a bag-making material that can be stably supplied.

The bag making material 10 according to one embodiment has the above-described structure with respect to the above-described conventional bag making material, and therefore can obtain the following actions and effects.

(1) According to the bag-making material 10, even if air is present in the internal space 2A of the housing portion 2, the air can be discharged to the outside through the internal passage 3A and the hole portion 3H of the non-sealing portion 32 in the hand-held portion 3. Therefore, the supply of the bag-making material 10 can be stabilized.

Thus, the bag-making material 10 can be supplied stably.

For example, when the bag-making material 10 provided with the sealing portion 31 in which the materials 1F, 1B, 1L, 1R are bonded to each other in advance by the sealing layer 3S is supplied, even if air in the internal space 2A is present, the air is not blocked by the sealing portion 31, but flows through the internal passage 3A of the non-sealing portion 32 and is discharged from the hole portion 3H. In this way, the supplied bag-making material 10 can be prevented from expanding and deforming.

Since the expansion and deformation of the bag-making material 10 are suppressed, the occurrence of wrinkles and twisting of the bag-making material 10 can be suppressed, and the bag-making material 10 is also suppressed from being separated from the supply path. Further, cutting of the bag-making material 10 at a position deviated from the line to cut C is suppressed, and variation in pitch (size) of the produced edge folding bag 1' is suppressed.

When the bag-making material 10 is supplied in a state sandwiched by a pair of rollers, air present in the internal space 2A of the bag-making material 10 is pushed out by the pair of rollers, passes through the internal passage 3A and the hole portion 3H, and is discharged. Therefore, the expansion of the bag-making material 10 due to the air in the internal space 2A being blocked by the sealing portion 31 can be suppressed. From this point, the bag-making material 10 can be stably supplied, and the operation rate of the production line for producing the edge folding bag 1' can be improved without stopping the supply of the bag-making material 10.

(2) Since the non-sealing portion 32 of the hand-held portion 3 is disposed in the two-layer portion P2 provided with only two layers of the front surface material 1F and the back surface material 1B, the front surface material 1F and the back surface material 1B are easily separated from each other, and the internal passage 3A can be reliably formed, as compared with the case of disposing in the four-layer portion provided with four layers of all the materials 1F, 1B, 1L, 1R. Therefore, the air in the internal space 2A can be reliably circulated to the hole 3H. Therefore, the bag-making material 10 can be supplied more stably.

(3) Since the hole 3H of the hand-held portion 3 is provided as the hand-held hole 3H 'of the hand-held portion 3', the hand-held hole 3H 'for allowing the hand of the user who carries the side folding bag 1' to be easily caught and carried can be used as the hole 3H for exhausting the air in the internal space 2A.

That is, the hole portion 3H serving as the hand hole 3H ' plays a role of stabilizing the supply of the bag making material 10 during the production of the side folding bag 1' to which the bag making material 10 is supplied, and plays a function of improving the portability of the produced side folding bag 1' by improving the portability of the user. Therefore, the hole portion 3H provided as the hand-held hole 3H 'of the hand-held portion 3' can exert a stable supply function before the edge folding bag 1 'is manufactured, and can exert a portability improvement function after the edge folding bag 1' is manufactured.

[ II ] modification example

The above-described embodiments are merely examples, and are not intended to exclude various modifications and technical applications not explicitly shown in the embodiments. The structures of the present embodiment can be variously modified and implemented within a range not departing from the gist of the present embodiment. The selection may be made as needed, or may be appropriately combined.

For example, the non-sealing portion is not limited to being disposed in the entire region where only the two-layer portion including the two layers of the front surface material and the back surface material is disposed, and may be a non-sealing portion only in a region downstream (the other side in the longitudinal direction) of the hole portion in the supply direction (the region upstream of the hole portion in the supply direction may be included in the sealing portion).

As shown in fig. 6 and 7, the non-sealing portion 32″ may be disposed not in the two-layer portion p2″ but in a four-layer portion p4″ in which four layers of the materials 1F ", 1B", 1L ", and 1R" (see fig. 7) are disposed. An example of this is shown in fig. 7 as follows: in the left side folded material 1L ", an internal passage 3A" is formed between one of the front surface material 1F "sides (either one of the one side and the other side in the thickness direction) of the two half portions of the valley-folded at the valley-folded line 1V" and the front surface material 1F ". The internal passage 3a″ communicates with a hole 3h″ communicating with the outside.

The bag-making material 10″ illustrated in fig. 6 is a material for manufacturing an edge folding bag in which no hand hole is provided, and there is no hole portion provided as a hand hole, that is, a small-sized hole portion 3h″ that does not function as a hand hole is provided.

However, the internal passage 3a″ of the present modification may communicate with a hole portion provided as a hand hole, or may communicate with a hole portion provided separately from the hand hole. In one embodiment, such a bagging material 10 is illustrated: in the case of the side folding bag 1 'having the hand-held portion 3' provided with the hand-held hole 3H ', the portion corresponding to the hand-held portion 3 in the bag-making material for manufacturing the side folding bag not provided with the hand-held hole contributes to portability even if the hand-held hole 3H' is not provided, and therefore, the side folding bag can be referred to as a hand-held portion as it is, or can be referred to as an extension portion in an extended form with respect to the storage portion, or can be referred to as a top sealing portion in a bonded form or arrangement.

The hole portion is not limited to a form in which all the material of the portion other than the margin portion, the seal portion, and the non-seal portion is penetrated in the thickness direction in the hand-held portion, and may be a form in which only one or the other of the materials of the portion other than the margin portion, the seal portion, and the non-seal portion is penetrated in the thickness direction in the hand-held portion.

As illustrated in fig. 7, in the hole portion 3H ", as a specific example, a left folded material 1L" or a back material 1B "may be provided on one side (lower side in fig. 7) in the thickness direction and no material may be provided on the other side (upper side in fig. 7) in the thickness direction (or may be provided so as to penetrate only the front material 1F") in a portion of the hand-held portion 3 "other than the remaining portion 30", the sealing portion 31 ", and the non-sealing portion 32".

If the bag-making material 10 "leaves the factory in a state where the hole 3H" penetrates through in the thickness direction, the air of the bag-making material 10 "wound in a roll shape can be smoothly discharged by setting the other side in the thickness direction on the outer peripheral side (the side in the thickness direction on the inner peripheral side).

Alternatively, if the bag-making material 10 "is shipped in a state of being corrugated like a folded paper, it is preferable that the hole 3H" penetrating one side in the thickness direction is provided in the other bag portion 1 "adjacent to the bag portion 1" provided with the hole 3H "penetrating the other side in the thickness direction. By alternately setting the direction in which the hole portion 3h″ penetrates to one side and the other side in the thickness direction in this way, smooth air discharge of the bellows-folded bag-making material 10″ is facilitated.

The non-sealing portion may be provided in both the four-layer portion and the two-layer portion, and as the hole portion, not only a hand hole but also a hole portion other than the hand hole (for example, the hole portion 3H ") may be provided in parallel.

The bag-making material is not limited to the form of bonding four materials, and may be a form of bonding three or less materials or a form of bonding five or more materials. According to the bag-making material to which three or less materials are bonded, bonding work for manufacturing the bag-making material can be simplified. With respect to the bag-making material to which five or more materials are bonded, by selecting each material, various properties such as sealability, waterproofness, and printing characteristics can be set for each portion where each material is used, thereby contributing to improvement of commercial properties.

Description of the reference numerals

1: a bag portion;

10: bag making material;

1F: a front material;

1B: a back surface material;

1L: left folded material;

1R: a right fold material;

1': edge folding bags;

1F': a front surface portion;

1B': a back surface portion;

1L': a left edge fold;

1R': a right fold;

1V': valley fold lines;

2: a storage section;

21: a main part;

21S: a first sealing layer;

22: a bottom sealing part;

22S: a second sealing layer;

23: a rim charge part;

2A: an inner space;

2S: a sealing layer;

2H: a hole portion;

2': a housing portion;

3: a hand-held portion (protruding portion);

30: a margin portion;

31: a sealing part;

31S: a first sealing layer;

32: a non-sealing portion;

32S: a second sealing layer;

33S: a third sealing layer;

3A: an internal passage;

3H: a hole portion;

3H': a hand-held hole;

3S: a sealing layer;

3': a hand-held portion (protruding portion);

9': roll toilet paper (content);

c: cutting off the preset line;

p2: a two-layer portion;

p4: four layer portions.

Claims (5)

1. A bag-making material comprising a paper material, wherein a bag portion, which is a portion of a side-folded bag formed with a bag-opening portion, is arranged in a longitudinal direction intersecting the width direction across a line to cut along the width direction, the side-folded bag having a flat-plate-shaped protruding portion protruding from a three-dimensional storage portion for storing contents, the bag-making material having a strip shape along both the longitudinal direction and the width direction and being tubular,

it is characterized in that the method comprises the steps of,

the bag-making material is provided with:

a housing portion that is a portion of the bag portion corresponding to the housing portion, is disposed adjacent to the line to cut on one side in the longitudinal direction, and has an internal space corresponding to a space for housing the content; and

a protruding portion that is a portion of the bag portion corresponding to the protruding portion, the protruding portion being disposed adjacent to the other side in the longitudinal direction with respect to the line to cut, and being disposed adjacent to the one side in the longitudinal direction with respect to the housing portion,

the protruding portion has:

a seal part formed by bonding a part of the paper material facing in a thickness direction intersecting both the longitudinal direction and the width direction;

a non-sealing portion at which other portions of the paper materials than the portion in the portion facing in the thickness direction are not bonded to each other, and at which the paper materials facing in the thickness direction form an internal passage that communicates with the internal space and is capable of ventilation therebetween; and

and a hole portion that is formed by penetrating the paper material in a portion of the protruding portion other than the portion and the other portion in the thickness direction, the hole portion being in communication with the outside and the internal passage.

2. The bag-making material according to claim 1, wherein,

the non-sealing portion is disposed at the other portion where only two layers of the paper material are provided in the thickness direction.

3. The bag-making material according to claim 1, wherein,

the non-sealing portion is disposed at the other portion where four layers of the paper material are provided in the thickness direction.

4. A bag-making material according to claim 1 or 2, characterized in that,

the hole portion is provided as a hand-held hole penetrating through the protruding portion.

5. A bag-making material according to claim 1 or 2, characterized in that,

at the hole portion, the paper material at a portion other than the portion and the other portion of the protruding portion is provided on one side in the thickness direction, and only the other side in the thickness direction penetrates in the thickness direction.