JP2019176996A - Fitting tool and bag body with fitting tool - Google Patents

Abstract

To provide a fitting tool having a base part of a small width substantially the same as that of a fitting part, and capable of suppressing increase of force required for opening work of an opening part.SOLUTION: A fitting tool 11 is provided with: a first substrate 13 having a first base part 29 of a band shape jointed along an opening part 25 to an inner surface of one sheet material 27 of a bag body 21 formed by sealing a double sheet material 27; a second substrate 15 having a second base part 37 of a band shape jointed to an inner surface of another sheet material 27 of the bag body 21 so as to face the first substrate 13; a fitting part 17 formed in surfaces facing with each other of the first base part 29 and the second base part 37, having a first fitting part 31 and a second fitting part 39 that detachably and attachably fit to each other, and having substantially the same width dimension as the width dimensions of the first base part 29 and the second base part 37; and an adhesion layer 19 provided in an accommodation part outside A in a substantially half dimension of the width dimension in sheet material facing surfaces 47 of the first base part 29 and the second base part 37, and formed of a low melting resin for jointing the first base part 29 and the second base part 37 to the respective sheet materials 27.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a fitting tool and a bag body with a fitting tool.

  In various fields such as food and miscellaneous goods, a bag body with a fitting tool is widely used, which has a fitting tool that seals the opening portion on the inner surface near the opening portion of the bag body (patent) Reference 1 etc.).

JP 2005-145536 A

  In recent years, band-shaped fittings fused to the bag body tend to be narrow due to customer needs and the like. In particular, the band-like base portion provided with the fitting portion omits the flange portion that is the fusion portion with the bag body provided on both sides in the width direction, and has a narrow base portion having substantially the same width as the fitting portion. There is a request to do. Conventionally, the width of the fitting has been about 8 mm to 10 mm in total, for example, 3 mm + 3 mm = 6 mm for the flanges on both sides and 2 mm to 4 mm for the fitting part. In this case, in the fitting tool in which the flange portion is omitted, the width becomes a narrow width of 2 mm to 4 mm. However, when the fitting tool becomes a narrow width of, for example, 2 mm, when the bag is fused to the bag main body using the bag making heat seal bar, a relative positional deviation from the bag making heat seal bar is likely to occur. . This means that if the fitting has a flange part, the fusion part with the bag body has a width of 3 mm, and the allowable width of the fusion is wide. Although the width is compensated for, if the width becomes narrow, the poor fusion causes a variation in the unlocking force of the fitting portion, which makes it difficult to open the opening.

  The present invention has been made in view of the above situation, and an object of the present invention is to provide a bag making heat seal bar at the time of fusing to a bag body in a fitting tool having a narrow base portion having substantially the same width as the fitting portion. An object of the present invention is to provide a fitting tool and a bag body with a fitting tool that can suppress an increase in force required for the opening operation of the opening even if the deviation occurs.

Next, means for solving the above problems will be described with reference to the drawings corresponding to the embodiments.
The fitting tool 11 according to claim 1 of the present invention has the opening on the inner surface of one sheet material 27 of the bag body 21 formed by sealing the periphery of the double sheet material 27 except for the opening 25. A first base material 13 having a band-shaped first base portion 29 joined along the portion 25;
A second base material 15 having a band-shaped second base 37 that is opposed to the first base material 13 and is joined to the inner surface of the other sheet material 27 of the bag body 21;
The first base portion 29 and the second base portion 37 are formed on mutually facing surfaces, and have a first fitting portion 31 and a second fitting portion 39 that are detachably fitted to each other to open and close the opening portion 25. A fitting portion 17 having substantially the same width as the width perpendicular to the longitudinal direction of the first base 29 and the second base 37;
On the sheet material facing surface 47 of the first base portion 29 and the second base portion 37 facing the inner surface of the sheet material 27, the dimension is approximately half the width of the first base portion 29 and the second base portion 37. An adhesive layer 19 provided on the outer side A of the accommodating portion and made of a low melting point resin having a lower melting point than the sheet material facing surface 47 and joining the first base portion 29 and the second base portion 37 to the respective sheet materials 27. When,
It is characterized by comprising.

In this fitting 11, the adhesive layer 19 is provided on the sheet material facing surface 47 of each of the first base portion 29 and the second base portion 37 on the outer side A of the accommodating portion that is approximately half the width dimension and is on the opening 25 side. Is provided. The adhesive layer 19 is made of a resin having a lower melting point than the sheet material facing surface 47. Thereby, the fitting tool 11 is positioned relative to the bag making heat seal bar when the narrow first base portion 29 and the second base portion 37 are thermocompression bonded to the sheet material 27 by the bag making heat seal bar. Even if the misalignment occurs, the housing portion outer side A of each of the base portions 29 and 37 is preferentially fused to the sheet material 27 by the low melting point resin that melts first. When the pair of sheet materials 27 facing each other at the opening portion 25 is opened by reliably fitting the housing portion outside A of the base portions 29 and 37 to the sheet material 27, the fitting tool 11 is fitted to the fitting tool 11. A load f is mainly applied to the opening side region 49 corresponding to approximately half of the width of the fitting portion 17 and the fitting portion 17 is elastically deformed. Therefore, the load f is used as a force (locking release force) for deforming the female claw portion 36 on the opening 25 side mainly in the locking release direction among the pair of female claw portions 35 and 36 constituting the fitting portion 17. Works efficiently. That is, the female claw portion 36 on the outer side A of the accommodating portion is displaced in a direction away from the barb portion 46.
Therefore, according to the fitting 11 in which the adhesive layer 19 is provided on substantially half of the housing portion outside A, the housing portion outside A of the base portions 29 and 37 can be reliably fused to the sheet material 27, and the opening portion 25 is opened. An increase in force required for work can be suppressed. Thereby, the fitting tool 11 can enable the opening operation with a stable and constant small load f.

The fitting 11 according to claim 2 of the present invention is the fitting 11 according to claim 1,
The first fitting portion 31 and the second fitting portion 39 have a fitting strength that is necessary for releasing the fitting compared to the fitting strength inside the housing portion, and the fitting strength on the outside A of the housing portion. Is set low.

  In this fitting 11, the fitting portion 17 has different fitting strengths on the inner and outer sides in the width direction of the fitting 11. That is, the fitting strength on the outer side A of the accommodating portion is lower than the fitting strength on the inner side of the accommodating portion. The fitting portion 17 can be easily opened from the opening portion 25 side which is the accommodating portion outer side A, but is difficult to be opened from the accommodating portion inner side. Thereby, it can suppress that it opens carelessly (it opens). For example, even if the pressure inside the housing portion increases, it does not open easily and is safe.

  The bag body 23 with a fitting tool according to claim 3 of the present invention is such that the fitting tool 11 according to claim 1 or 2 is provided in the opening 25 of the bag body 21 made of the double sheet material 27. It is provided.

  In this bag body 23 with a fitting tool, even when the fitting tool 11 and the bag body 21 are thermocompression bonded, even if the bag-making heat seal bar is displaced or the fitting tool 11 is displaced, it is made of a low melting point resin. With the adhesive layer 19, the housing portion outer side A of the fitting 11 and the bag body 21 can be reliably fused. As a result, the engagement portion 17 has an unlocking force that acts efficiently and stably, and the female claw portion 36 on the outer side A of the housing portion is displaced in a direction away from the barb portion 46, thereby opening the opening portion. An increase in force required for the 25 opening operation can be suppressed.

  According to the fitting tool of the first aspect of the present invention, in the fitting tool having a narrow base portion that is substantially the same width as the fitting portion, the bag-making heat seal bar Even if misalignment occurs, it can be reliably fused with an adhesive layer made of a low-melting resin, and the fusion position is on the outside of the housing, increasing the force required for opening the opening. Can be suppressed.

  According to the fitting tool of the second aspect of the present invention, the opening operability is improved by facilitating the opening from the outside of the housing portion, while the reliability of the housing performance is improved by making it difficult to open from the inside of the housing portion. it can.

  According to the bag body with a fitting tool according to claim 3 of the present invention, even if the fitting tool is narrow, an increase in force required for the opening operation of the opening can be suppressed.

It is the top view which looked at the fitting tool which concerns on embodiment of this invention from the one end side of the longitudinal direction. It is a principal part top view of the bag main body with which the fitting tool of FIG. 1 was attached along the opening part. It is a front view of the bag body with a fitting tool to which the fitting tool shown in FIG. 1 was attached. It is operation | movement explanatory drawing before opening of a bag body with a fitting tool. It is operation | movement explanatory drawing which represented typically the condition in the middle of opening of the bag body with a fitting tool. It is operation | movement explanatory drawing which represented typically the condition in the middle of opening of the bag body with a fitting tool to which the fitting tool which concerns on the comparative example was attached. It is operation | movement explanatory drawing after opening of a bag body with a fitting tool.

Embodiments according to the present invention will be described below with reference to the drawings.
FIG. 1 is a plan view of a fitting 11 according to an embodiment of the present invention as viewed from one end side in the longitudinal direction.
The fitting 11 according to the present embodiment includes a first base material 13, a second base material 15, a fitting portion 17, and an adhesive layer 19 as main components.

  The fitting 11 is attached to the bag body 21 (see FIG. 3). The fitting tool 11 and the bag body 21 constitute a bag body 23 with a fitting tool (see FIG. 3).

FIG. 2 is a plan view of the main part of the bag body 21 to which the fitting tool 11 of FIG. 1 is attached along the opening 25.
The first base material 13 is joined along the opening 25 to the inner surface of one sheet material 27 of the bag body 21 in which the periphery of the double sheet material 27 is sealed. The first base material 13 has a strip-shaped first base portion 29. A first fitting portion 31 is formed along the opening 25 on the surface of the first base portion 29 opposite to the one sheet material 27.

  The 1st fitting part 31 turns into a female side fitting part in this embodiment. The first fitting portion 31 is formed with a pair of female claws 35 and 36 that rise from the first base portion 29, have a tip bent in a hook shape, and sandwich the recess 33. The first fitting portion 31 is formed at a substantially central portion in the width direction (the left-right direction in FIG. 1) of the first base portion 29 and is continuously formed along the longitudinal direction of the first base portion 29 (the direction perpendicular to the plane of FIG. 1). Is done.

  The second base material 15 is bonded to the inner surface of the other sheet material 27 of the bag body 21 so as to face the first base material 13. The second base material 15 has a band-shaped second base portion 37. A second fitting portion 39 that fits into the first fitting portion 31 is formed on the surface of the second base portion 37 opposite to the other sheet material 27.

  The 2nd fitting part 39 turns into a male side fitting part in this embodiment. The second fitting portion 39 is formed having a strip 41 that rises from the second base 37 and an arrowhead-shaped head 43 provided at the tip of the strip 41. The second fitting portion 39 is formed at a substantially central portion in the width direction (left-right direction in FIG. 1) of the second base portion 37 and is continuously formed along the longitudinal direction of the second base portion 37 (perpendicular direction in FIG. 1). Is done.

  The first fitting portion 31 and the second fitting portion 39 are formed on surfaces of the first base portion 29 and the second base portion 37 that face each other. The first fitting portion 31 and the second fitting portion 39 can be detachably fitted by fitting the head portion 43 of the second fitting portion 39 into the concave portion 33 of the first fitting portion 31. ing. That is, the first fitting part 31 and the second fitting part 39 are detachably fitted to each other so that the opening 25 can be opened and closed.

  The first fitting portion 31 and the second fitting portion 39 constitute the fitting portion 17.

  The fitting part 17 is formed to have substantially the same width dimension as the width dimension orthogonal to the longitudinal direction of the first base part 29 and the second base part 37.

  In other words, the fitting 11 of the present invention is formed with a narrow width in which the flange portions extending from both sides in the width direction of the first base portion 29 and the second base portion 37 are omitted. For this reason, for example, with respect to a conventional fitting tool having a total width of 10 mm, the fitting tool 11 according to this embodiment is about 2 mm to 4 mm in which the width length 3 mm + 3 mm = 6 mm of the flange portion is omitted. ing.

  The fitting portion 17 has a fitting strength required to release the fitting, and the fitting strength of the housing portion outer side A on the opening 25 side is set lower than the fitting strength inside the housing portion. Yes. The fitting portion 17 is shaped so that the angles of the barb portions 45 and 46 of the arrowhead-shaped head portion 43 are different on the left and right of FIG. That is, the angle formed between the barb portion 45 inside the housing portion and the strip portion 41 is formed as an acute angle. The angle formed between the barb portion 46 on the outer side A of the accommodating portion and the strip portion 41 is an obtuse angle. Due to the difference in angle between the barb portions 45 and 46, the ease of detachment of the female-side fitting portion 31 is made different between the housing portion inner side and the housing portion outer side A. That is, directionality is imparted so that the bag body 23 can be easily opened and closed from the housing portion outer side A on the opening 25 side.

  Examples of the material used for the fitting 11 include polyethylene such as low density polyethylene, linear low density polyethylene, and high density polyethylene, unstretched polypropylene, ethylene-vinyl acetate copolymer, and ionomer.

  Moreover, the fitting tool 11 may consist of 1 type of resin, and may consist of the resin composition containing 2 or more types of resin. Moreover, well-known additives, such as a stabilizer, antioxidant, a lubricant, an antistatic agent, and a coloring agent, may be added as needed.

  Incidentally, the adhesive layer 19 is provided on the sheet material facing surface 47 of the first base portion 29 and the second base portion 37 facing the inner surface of the sheet material 27. The adhesive layer 19 has a dimension W / 2 that is substantially half the width dimension W of the first base portion 29 and the second base portion 37, and is provided on the half portion of the housing portion outer side A. The adhesive layer 19 is made of a low melting point resin having a lower melting point than the sheet material facing surface 47, and joins the first base portion 29 and the second base portion 37 to the respective sheet materials 27.

FIG. 3 is a front view of the bag body 23 with a fitting tool to which the fitting tool 11 shown in FIG. 1 is attached.
The bag body with fitting tool 23 according to the present embodiment is formed by providing the fitting tool 11 in the opening 25 of the bag body 21 made of the double sheet material 27.

FIG. 4 is an operation explanatory view before opening the bag body 23 with a fitting tool.
The bag body with fitting 23 has the edge of the opening 25 on the first base side gripped with one finger, the edge of the opening 25 on the second base side gripped with the other finger, and By separating the sheet material 27 so as to peel off, the fitting of the first fitting portion 31 and the second fitting portion 39 is released, and the contents can be taken out.

Next, the operation of the above configuration will be described.
In the fitting tool 11 according to the present embodiment, the adhesive layer 19 is provided on the outer side A of the storage portion on the sheet material facing surfaces 47 of the first base portion 29 and the second base portion 37 so as to be approximately half the width size. ing. The adhesive layer 19 is made of a low melting point resin having a lower melting point than the sheet material facing surface 47. Thereby, the fitting tool 11 is positioned relative to the bag making heat seal bar when the narrow first base portion 29 and the second base portion 37 are thermocompression bonded to the sheet material 27 by the bag making heat seal bar. Even if the misalignment occurs, the housing portion outer side A of each of the base portions 29 and 37 is preferentially fused to the sheet material 27 by the low melting point resin that melts first.

FIG. 5 is an operation explanatory view schematically showing a state in the middle of opening the bag body 23 with the fitting tool.
In the fitting tool 11, the housing portion outer side A of the base portions 29 and 37 is securely fused to the sheet material 27, so that the pair of sheet materials 27 facing each other at the opening 25 are opened with the point P as a virtual fulcrum. At that time, the load f is mainly applied to the opening side region 49 (hatched portion in FIG. 5) corresponding to approximately half the width of the fitting 11 and the fitting portion 17 is elastically deformed. That is, the sheet material 27 and the base portions 29 and 37 of the opening side region 49 are bonded and fixed and are substantially integrated, and the sheet material 27 and the base portions 29 and 37 are not fixed inside the housing portion. It is said that. Therefore, the load f is used as a force (locking release force) for deforming the female claw portion 36 on the opening 25 side mainly in the locking release direction among the pair of female claw portions 35 and 36 constituting the fitting portion 17. Works efficiently. That is, the female claw portion 36 on the outer side A of the accommodating portion is easily displaced in the direction away from the barb portion 46.

FIG. 6 is an operation explanatory view schematically showing a situation in the middle of opening of the bag body 53 with the fitting tool to which the fitting tool 51 according to the comparative example is attached.
On the other hand, for example, in the fitting 51 according to the comparative example in which the inner sides of the accommodating portions of the base portions 29 and 37 are fused to the sheet material 27 by the adhesive layer 19, the sheet material 27 moves away from the fitting tool 11. And the accommodating portion side region 55 (shaded portion in FIG. 6) inside the accommodating portion of the fitting 11 is elastically deformed first, so that the deformation is not transmitted to the female nail portion 36 on the accommodating portion outer side A, The locking release force does not act on the female nail portion 36 efficiently. That is, the female claw portion 36 on the outer side A of the accommodating portion is displaced in a direction in which it is engaged with the barb portion 46. For this reason, in order to unlock the female claw portion 36 on the outer side A of the accommodating portion from the barb portion 46, a larger unlocking force (load F) is required. That is, when opening, a load F larger than the load f is required.

  As described above, according to the fitting 11 according to the present embodiment, the adhesive layer 19 is provided in substantially half of the housing portion outside A, so that the housing portion outside A of the base portions 29 and 37 can be securely attached to the sheet material 27. Can be fused. As a result, an increase in force required for the opening operation of the opening 25 can be suppressed. Thereby, the fitting tool 11 can enable the opening operation with a stable (constant) small load f. Further, the opening operation of the opening portion 25 is performed by continuously fixing the half of the opening portion 25 side where the force is applied at the time of opening, and maintaining the fusion fixing width in the longitudinal direction. Since it is surely fused, the opening can be stably performed even if the opening operation is repeated.

FIG. 7 is an operation explanatory view after opening the bag body 23 with the fitting tool.
The fitting-equipped bag body 23 in which the fitting of the first fitting portion 31 and the second fitting portion 39 has been released enables the contents to be taken out from the opening 25 that has been released from the fitting.

  In addition, as for the fitting tool 11, a base material will have thickness because the adhesive layer 19 is provided. This also makes it easy for the fitting 11 to be fused to the sheet material 27 during bonding.

  In the fitting 11, the fitting portion 17 has different fitting strengths on the inner and outer sides in the fitting tool width direction. That is, the fitting strength on the outer side A of the accommodating portion is lower than the fitting strength on the inner side of the accommodating portion. The fitting portion 17 is easily opened from the opening edge 25 side which is the housing portion outer side A, but is difficult to be opened from the housing portion inner side. Thereby, it can suppress that it opens carelessly (it opens). For example, even if the internal pressure increases, it does not open easily and is safe. As a result, the opening operability can be improved by facilitating the opening from the housing portion outer side A, while the reliability of the housing performance can be increased by making it difficult to open from the housing portion inner side.

  And in the bag body 23 with a fitting tool which concerns on this embodiment, when the fitting tool 11 and the bag main body 21 are thermocompression bonded, even if the bag-making heat seal bar is displaced or the fitting tool 11 is displaced. The housing outer side A of the fitting 11 and the bag body 21 can be reliably fused. As a result, the engagement portion 17 has an unlocking force that acts efficiently and stably, and the female claw portion 36 on the outer side A of the housing portion is displaced in a direction away from the barb portion 46, thereby opening the opening portion. An increase in force required for the 25 opening operation can be suppressed.

  Therefore, according to the fitting tool 11 according to the present embodiment, the bag making heat seal at the time of fusing to the bag body 21 in the fitting tool 11 having a narrow base portion that is substantially the same width as the fitting portion 17. Even if the bar is displaced, an increase in force necessary for opening the opening 25 can be suppressed.

  According to the bag body 23 with a fitting tool according to the present embodiment, even if the fitting tool 11 is narrow, an increase in force necessary for the opening operation of the opening 25 can be suppressed.

  The present invention is not limited to the above-described embodiments, and the configurations of the embodiments may be combined with each other, or may be modified or applied by those skilled in the art based on the description of the specification and well-known techniques. The invention is intended and is within the scope of seeking protection.

  For example, in the above configuration example, the bag body formed by sealing the periphery except the opening portion of the double sheet material is illustrated, but the bag body is one in which the opening side of the opening portion is sealed by the sealing portion. It may be. In this case, the space between the fitting tool and the sealing portion on the opening side is left as a sealed space with no fusion in order to form the opening. The sealed space is cut along the fitting tool by a notch or the like. In the bag body with a fitting tool, the sheet material on the front surface and the back surface is simultaneously cut by the notch, whereby the sealing portion on the opening side is cut off. In this bag body with a fitting tool, the sealed space is thereby opened and becomes an opening.

DESCRIPTION OF SYMBOLS 11 ... Fitting tool 13 ... 1st base material 15 ... 2nd base material 17 ... Fitting part 19 ... Adhesive layer 21 ... Bag main body 23 ... Bag body with fitting tool 25 ... Opening part 27 ... Sheet material 29 ... 1st Base 31 ... first fitting portion 37 ... second base 39 ... second fitting portion 47 ... sheet material facing surface

Claims (3)

The 1st base material which has the belt-like 1st base joined along the opening to the inner surface of one sheet material of the bag body formed by sealing the circumference except the opening of the double sheet material When,
A second base material having a strip-shaped second base portion that is bonded to the inner surface of the other sheet material of the bag body opposite the first base material;
The first base portion includes first and second fitting portions that are formed on opposite surfaces of the first base portion and the second base portion and that are detachably fitted to each other to open and close the opening. And a fitting portion having substantially the same width dimension as the width dimension orthogonal to the longitudinal direction of the second base part,
Provided on the sheet material facing surface of the first base and the second base facing the inner surface of the sheet material on the outer side of the accommodating portion with a dimension approximately half the width of the first base and the second base. A low melting point resin having a lower melting point than the sheet material facing surface, and an adhesive layer that joins the first base and the second base to the respective sheet materials,
The fitting characterized by comprising. The fitting according to claim 1,
The first fitting portion and the second fitting portion are set so that the fitting strength necessary for releasing the fitting is lower than the fitting strength inside the housing portion compared to the fitting strength inside the housing portion. The fitting which is characterized by the above-mentioned.   A bag body with a fitting tool, wherein the fitting tool according to claim 1 or 2 is provided in the opening of the bag body made of the double sheet material.

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