JP2014118169A - Packing bag and manufacturing device of packing bag - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packing bag for easily taking out the content, and easily filling the content, while securing the surface area for displaying a predetermined item.SOLUTION: A packing bag 100 displays predetermined information on at least a part of a surface, by molding in a bag shape by welding the peripheral edge by superposing two films, and comprises a storage part 101 for storing the content and a welding part 102 provided so as to enclose the storage part 101 and welding the two films, and the storage part 101 is provided so that the longitudinal direction of the storage part 101 runs along the longitudinal direction of the packing bag 100, and is formed in the length by which a user can closely press down a both-end space of a width of the storage part 101 by fingers.

Description

  The present invention relates to a packaging bag and a packaging bag manufacturing apparatus.

  There are packaging bags that contain a small amount (for example, a single use amount) of products such as shampoo, rinse, lotion, and essence. The packaging bag containing the product is distributed to consumers as a free sample for product promotion and advertisement, or is used by the guest in the accommodation facility.

  For example, a rectangular packaging bag in which two films are overlapped and four sides are welded is known. In addition, there is a type in which such a packaging bag is divided in the longitudinal direction, one serving as a filling portion for filling contents inside, and the other serving as a display portion for performing predetermined display on the outside. And by making the surface area of a filling part into 10-50% with respect to the surface area of a packaging bag, while ensuring the area of a display part enough, the magnitude | size of an accommodating part is ensured according to internal capacity. The contents are easily taken out (see, for example, Patent Document 1).

  When the internal capacity is about 5 to 14 cc or 5 to 14 g, for example, a packaging bag having a longitudinal size of about 100 to 140 mm and a short size of about 50 to 60 mm may be employed. is there. In general, if it is a packaging bag of this size, the product name or logo mark of the contents, the name of the manufacturer or distributor of the product, the ingredients or raw materials, the method of use, advertising, etc. (Hereinafter also referred to as “predetermined matters” or “predetermined information”) can be printed on the packaging bag.

Japanese Patent Laid-Open No. 10-291545

  On the other hand, when accommodating a very small amount (for example, about 0.2 to 2.0 cc or about 0.2 to 2.0 g) of contents, it is possible to secure a surface area for displaying predetermined items and to easily take out the contents. It becomes more difficult to realize a packaging bag that satisfies the requirements of improvement and ease of filling the contents at the time of manufacture.

  For example, when accommodating a very small amount of contents, a rectangular packaging bag having a side of about 50 to 60 mm may be employed. However, the smaller the surface area of the packaging bag, the more difficult it is to display all of the predetermined items on the packaging bag. Then, in order to display all predetermined items, a mount or brochure is added, or the packaging bag filled with the product and the mount or brochure are accommodated in another packaging container. That is, the number of members and manufacturing processes for manufacturing the final product increase, and the cost also increases.

Further, even when the packaging bag is divided in the longitudinal direction and the filling part and the display part are provided, if the internal capacity is very small, a problem occurs during the production of the packaging bag. For example, when sealing after filling the filling portion with contents such as liquid with a filling means such as a nozzle, if the depth of the filling portion is not sufficient, the liquid surface will be close to the welded location, resulting in poor sealing ("Seam Also called “bad”). However, when the depth is simply increased, the area of the inner wall of the filling portion also increases, so that when the content is taken out from the packaging bag, the amount of the content attached to the inner wall of the filling portion also increases. Moreover, it can be said that it becomes important to implement | achieve the packaging bag which can take out a content more efficiently especially as the quantity of the content accommodated in a packaging bag becomes small.

  Then, the technique of an indication aims at providing the packaging bag which is easy to take out the content and to be easily filled with the content, ensuring the surface area for displaying a predetermined matter.

  According to one aspect of the disclosed technology, there is provided a packaging bag in which two films are overlapped, the periphery is welded and formed into a bag shape, and predetermined information is displayed on at least a part of the surface. The packaging bag has a housing portion that contains the contents and a welded portion that is provided so as to surround the housing portion and welds two films, and the housing portion has a longitudinal direction of the packaging bag. It is provided so as to be along the longitudinal direction, and has a length that allows the user to press between the both ends of the width of the housing portion with a finger without a gap.

  The packaging bag displays predetermined information on at least a part of its surface. Further, by setting the width of the accommodating portion to a length that allows the user to press the gap between the both ends of the accommodating portion with a finger without a gap, the user pushes out the contents at a time with the accommodating portion held between hands. Therefore, it is easy to take out the contents. Furthermore, if the contents are filled along the longitudinal direction of the accommodating portion, the accommodating portion is sufficiently deep, so that sealing failure hardly occurs and the contents are easily filled.

  Further, the width of the accommodating portion may be 15 to 27 millimeters. Specifically, with such a width, the user can press the gap between both ends of the housing portion with a finger without a gap.

  Moreover, the accommodating part may be provided along the approximate center of the transversal direction of the packaging bag. In this way, the user can fold the packaging bag in half at the center in the short direction, and at the same time, the container can be folded in the center in the short direction. And it becomes easier for a user to hold | suppress between the both ends of the width | variety of a storage part by a finger | toe without a gap | interval by folding a storage part vertically into two, and the ease of taking out the contents improves.

  According to another aspect of the disclosed technology, there is provided a packaging bag manufacturing apparatus in which two superposed films are welded and formed into a bag shape and predetermined information is displayed on at least a part of the surface. The packaging bag manufacturing apparatus has a first welding means for welding the peripheral edge portion in the short direction of the packaging bag, and a second welding means for welding the peripheral edge portion in the longitudinal direction of the packaging bag. The welding means and the second welding means are formed with a receiving portion for storing the contents so that the longitudinal direction of the receiving portion is along the longitudinal direction of the packaging bag, and a welding portion in which two films are welded, It is formed so as to surround the housing portion, and has a length that allows the user to press between the both ends of the width of the housing portion with a finger without a gap.

  According to the manufacturing apparatus, a packaging bag displaying predetermined information can be manufactured. In addition, since the user can press the contents between the both ends of the width of the accommodating portion with a finger without a gap, the user can push out the contents at a time by holding the accommodating portion by hand. It is possible to manufacture a packaging bag in which an object can be easily taken out. Furthermore, if the contents are filled along the longitudinal direction of such a housing portion, the housing portion has a sufficient depth, so that sealing failure is unlikely to occur, and the content can be easily filled. Yes.

  It is possible to provide a packaging bag in which the contents can be easily taken out and the contents can be easily filled while securing a surface area for displaying predetermined matters.

It is a figure which shows an example of the packaging bag which concerns on embodiment. It is a figure for demonstrating an example of the manufacturing apparatus of the packaging bag which concerns on embodiment. It is a figure for demonstrating an example of the manufacturing apparatus of the packaging bag which concerns on embodiment. It is a figure which shows an example of the packaging bag which concerns on a modification. It is a figure which shows an example of the packaging bag which concerns on a modification. It is a figure which shows an example of the packaging bag which concerns on a modification. It is a figure which shows an example of the packaging bag which concerns on a comparative example.

  Hereinafter, a packaging bag according to an embodiment will be described with reference to the drawings. In addition, the packaging bag which concerns on this invention is not limited to the structure of embodiment. That is, the dimensions, materials, shapes, relative arrangements, and the like of the components described in the present embodiment are not intended to limit the technical scope of the invention only to those unless otherwise specified. .

  FIG. 1 shows an example of a packaging bag according to the present embodiment. The packaging bag 100 according to the present embodiment has a housing portion 101 that is welded at its peripheral edge and accommodates the contents, and a welded portion that is welded and does not contain the contents. In FIG. 1, the hatched region in FIG. 1 is a region where a flat surface without unevenness (also referred to as “solid”) is welded (sealed), and is referred to as a solid region 102. Further, in the welded portion, a region where lattice-like hatching is performed in FIG. 1 is a region where a goza (weld) shape is welded, and is referred to as a goblet region 103. Further, an opening assisting portion (so-called “notch”) 104 that is a position where tearing starts when the user opens the packaging bag 100 may be provided on the periphery of the packaging bag 100. In the present embodiment, at least a part of the surface of the packaging bag 100 (the storage unit 101, the solid region 102, and the goblet region 103) can be a display unit on which predetermined items are displayed. For example, if a display part is provided on the entire surface of the packaging bag 100, the product name or logo mark of the contents, the name of the manufacturer or distributor of the product, the component or raw material, the usage method, the advertisement, etc. , It can be fully accommodated in the display part.

  The goza-shaped seal is an example of an uneven seal, and a mesh shape or other patterns may be applied instead of the goza-shaped seal. By applying an uneven seal, the strength of the welded portion can be improved, and leakage of the contents can be more reliably prevented. On the other hand, it is easier to read the content displayed on the surface when the flat seal is applied than when the uneven seal is applied.

  The welded portion is sealed by welding using electric heat, high frequency, ultrasonic waves, or the like. As the form of the sealed bag by welding, in addition to the four-sided seal type shown in FIG. 1, a three-sided seal type, a pillow type (with an envelope attached, with a gusset), a standing type (a self-supporting package), or the like may be used.

  The material of the packaging bag 100 is mainly a plastic laminated film. For example, the outer layer is polyester, nylon, polyethylene, or the like, and the inner layer is a heat-meltable film that can be welded, such as polyethylene or polypropylene. Moreover, you may use an aluminum foil, an aluminum vapor deposition plastic film, etc. for an intermediate | middle layer.

The packaging bag 100 according to the present embodiment has a large area for welding two films as compared with a conventional general packaging bag. Therefore, for example, when providing the elongate accommodating portion 101 near the center in the short direction of the packaging bag 100 and providing the opening assisting portion 104 on a part of the longer side of the packaging bag 100, from the opening assisting portion 104 to the accommodating portion 101. The distance is also relatively long. On the other hand, when the packaging bag 100 can be opened more linearly so that the tear marks of the two films are aligned in parallel, the ease of opening and the ease of taking out the contents are improved. As a result of the test, a laminated film of PET12μ / Al9μ / PET12μ / LLDPE40μ can be cited as an example of a film material that can open the packaging bag 100 more linearly. In particular, when the thickness of LLDPE is 50 μm or more, it becomes difficult to tear linearly. In addition, since the distance from the starting point of tearing to the accommodating part 101 becomes short, so that the length of a notch is long, possibility that a tear mark will bend on the way will become low. However, in the present embodiment, an opening assisting portion having a length of about 2 mm can be employed as in the conventional case.

  The contents are filled with a liquid, a powdery product, a granular product or the like. Specifically, the content may be a detergent or cosmetic such as shampoo, rinse, lotion, essence, gel, milky lotion, cream, etc., or food or medicine.

  The shape of the packaging bag 100 and the accommodating part 101 is each rectangular as shown in FIG. 1, for example. Further, the size of the packaging bag 100 is, for example, 100 to 140 mm in the longitudinal direction indicated by the length A in FIG. 1 and 50 to 60 mm in the lateral direction indicated by the length B. Further, the size of the accommodating portion 101 is 30 to 105 mm in the longitudinal direction indicated by the length C in FIG. 1 and 15 to 27 mm in the lateral direction indicated by the length D. And the accommodating part 101 is provided so that the longitudinal direction of the accommodating part 101 may follow the longitudinal direction of a packaging bag. More specifically, the accommodating part 101 is provided along the approximate center of the packaging bag 100 in the short direction, and a welding part is provided so as to surround the accommodating part 101. For example, the accommodating part 101 is provided so that the ratio of the surface area of the accommodating part 101 to the surface area of the packaging bag 100 is 50% or less. The packaging bag 100 which concerns on this Embodiment has ensured the surface area for displaying a predetermined matter by providing a welding part.

Moreover, the capacity | capacitance of the content which can be filled in the packaging bag which concerns on this Embodiment can be estimated by the following formula.
Capacity (cc) = Surface area of the accommodating part (cm ² ) × Thickness of the accommodating part (cm) × Coefficient (1)

  The “coefficient” is a value to be multiplied in order to give a margin to the capacity for safety. The capacity can be obtained from the product of the surface area of the housing part 101 and the thickness of the housing part 101. However, in the case of the packaging bag according to the present embodiment, when the packaging bag 100 is sealed, a dart (a seam that is welded in a state in which the film is folded) is spread when the opening extends in the thickness direction of the housing portion 101. Defective) is likely to occur. In order to prevent darts, it is desirable that the opening is not greatly opened in the thickness direction of the housing portion 101 when the packaging bag is sealed, that is, after the contents are filled. On the other hand, when filling the contents while keeping the opening from spreading in the thickness direction, the liquid level of the contents rises more than when opening and filling the opening in the thickness direction of the accommodating portion 101. become. If it becomes so, it will become easy to generate | occur | produce delamination (delamination: the seam defect which the content is inserted | pinched and peeled in the welding part). In order to avoid such a seam defect as described above, in the above formula (1), the product of the surface area of the housing portion and the thickness of the housing portion is multiplied by a coefficient. As the coefficient, a value of about 0.5 to 0.7 is preferable.

  If the length of the container 101 in the short direction is 1.5 cm, the length in the longitudinal direction is 9 cm, the thickness of the container is 0.1 cm, and the coefficient is 0.5, these are applied to the equation (1). The capacity can be calculated as about 0.67 cc. Similarly, the accommodating part 101 of this Embodiment described above can respond | correspond to the internal capacity of about 0.2-2.0cc, and can be said to be suitable when filling a very small amount of contents. .

<How to use>
For example, the user of the packaging bag 100 opens one end in the longitudinal direction of the housing portion 101, presses the other end in the longitudinal direction of the housing portion 101 with the belly of the finger, and holds the finger in the longitudinal direction of the housing portion 101 while holding it down. The contents of the storage unit 101 are pushed out by sliding in the direction of one end (that is, the opening). At this time, if the user cannot pinch between the both ends of the width of the accommodating portion 101 (that is, the length in the short direction) without a gap, the direction in which the finger slides in the accommodating portion (that is, the content) The direction in which the object is pushed out) wraps around on the opposite side, making it difficult to push out all the contents. In the present embodiment, the length of the accommodating portion 101 in the short side direction is set to 15 to 27 mm, which is a width that allows the user to press with a finger without a gap. That is, the accommodating part 101 is elongate along the longitudinal direction of the packaging bag 100, and is designed so that the user can push out the contents at a time by holding the accommodating part 101 by hand.

  In addition, from the viewpoint of being able to be held by the user's finger, more preferably, the length of the accommodating portion 101 in the short direction is 23 mm or less. On the other hand, when the length in the short direction is shortened, the opening of the accommodating portion 101 becomes narrow, but a wider opening is advantageous for the filling process. For example, a nozzle having a larger diameter can be inserted when the opening is wider, and the content discharge amount per unit time can be increased as the nozzle diameter (inner diameter) increases. Also, if the nozzle diameter can be increased, for example, the thickness of the member can be increased to increase the strength of the nozzle. In addition, the wider the opening, the lower the possibility that the contents will adhere to the welding location when sealing the packaging bag. For the above reasons, in order to provide an opening having a sufficient size for filling the contents into the accommodating part 101, the length of the accommodating part 101 in the short direction is more preferably 20 mm or more.

  In the example of FIG. 1, the shape of the packaging bag 100 and the housing portion 101 is rectangular, but the shape of the packaging bag 100 or the housing portion 101 may be a rounded rectangle, an ellipse, or other shapes. Even if the shape is other than a rectangle, the same effect can be obtained if the width of the accommodating portion 101 (that is, the length in the short-side direction or the short-axis direction) is within the above range. As described above, the packaging bag 100 according to the present embodiment has a width in the short direction of the housing portion 101 that allows the user to press the gap between both ends in the short direction with the belly of the finger without a gap. Thus, the ease of taking out the contents is improved. Moreover, if the user folds the packaging bag 100 in half along the center of the packaging bag 100 in the short direction, the width of the housing portion 101 in the short direction can be further reduced. If the width in the short direction of the storage portion 101 is reduced, the user can more easily press both ends of the width of the storage portion 101 with fingers without any gap, and the ease of taking out is improved. If the accommodating part 101 is provided along the center of the packaging bag 100 in the short direction, the accommodating part 101 can also be folded in two vertically by folding the packaging bag in two, so that the contents can be taken out more easily. Become. Moreover, if the contents can be taken out smoothly, it is less likely that the finger is soiled with the squeezed contents.

<Manufacturing equipment>
The packaging bag 100 can be manufactured by superimposing two films and bonding them together using a plurality of rollers that weld predetermined positions. In addition, at a predetermined timing, a filling unit such as a nozzle provided at a predetermined position fills the container 101 with the contents. In addition, after filling a predetermined amount, the content remaining in the filling unit 203 in the direction opposite to the discharge direction may be sucked (sucked back) to prevent the content from being drooped. The film feeding direction by the roller is, for example, the longitudinal direction of the packaging bag. Moreover, the shape of the area | region to weld can also be changed by changing the shape of a roller.

Next, the packaging bag manufacturing apparatus according to the present embodiment will be described with reference to FIGS. 2 and 3. 2 and 3 show an example of a cylindrical roller for sealing (welding) two films. In FIG. 2, there are three rollers 21 to 23. The roller 21 (also referred to as first welding means) is a vertical seam roller for sealing both ends of the packaging bag 100 in the short direction. The roller 22 (also referred to as second welding means) is a horizontal seam roller for applying a solid seal to both ends of the packaging bag 100 in the longitudinal direction. The roller 23 is a lateral seam roller for applying a goza-shaped seal to both ends of the packaging bag 100 in the longitudinal direction. The rollers 21 to 23 in FIG. 2 can form two packaging bags in the axial direction of the roller (that is, the left-right direction in FIG. 2).

  A region 201 where lattice-like hatching is applied to the roller 21 and the roller 23 is a portion where a goza-eyed seal is applied to the film. In addition, a hatched region 202 in the roller 21 and the roller 22 is a portion where a solid seal is applied to the film. And between the area | region 202 of the roller 21, the gap | interval part for forming the accommodating part 101 in the packaging bag 100 exists, and the filling means 203 shown with the broken line is located in a gap | interval part. The filling means 203 is a nozzle or the like for filling the container 101 with the contents. Further, the filling unit 203 is connected to a hopper, a tube, or the like that stores contents, not shown, and discharges the contents to the storage unit 101 when the three sides of the storage unit 101 are bonded together.

In the present embodiment, it is preferable that the filling means 203 does not have a large width in the thickness direction of the housing portion 101 in order to prevent the contents from adhering to the welding portion when sealing the packaging bag. That is, the filling means 203 is provided so that the cross-section of the filling means 203 has a flat shape (an ellipse, a rectangle, a rounded rectangle, etc.) that is longer in the width direction of the housing portion 101 than in the thickness direction of the housing portion 101. preferable. For example, by setting the inner diameter of the filling means 203 (nozzle) to 4 to 5 mm and the outer diameter to 5 to 7 mm, it is possible to fill 40 to 50 packaging bags per minute as in the conventional case. That is, the cross-sectional area of the filling unit 203 (the nozzle) if 12 mm ² to 20 mm ² approximately, can be maintained conventional level of capability. Therefore, the cross-section of the filling means 203 (nozzle) is, for example, about 2 mm in length in the short direction of the inner diameter, about 6 to 8 mm in length in the longitudinal direction of the inner diameter, and 4 mm in length in the short direction of the outer diameter. The length of the outer diameter in the longitudinal direction may be a rounded rectangle having a length of about 8 to 10 mm.

  The roller 21 has a region for forming two packaging bags with the center in the axial direction of the roller (corresponding to the short direction of the packaging bag) as a boundary. A gap for forming the accommodating portion 101 exists at the center in the axial direction of the roller in each region. The width of the gap (FIG. 2: length D) coincides with the length of the accommodating portion 101 in the short direction, and is, for example, 15 to 27 mm. On both sides, there are areas 202 for solid sealing. Further, a region 201 for applying a goza-eyed seal exists on the outer side.

  The roller 22 also has a region for forming two packaging bags with the center in the axial direction of the roller as a boundary. Moreover, the roller 22 has the area | region 202 for giving a solid seal to the short side peripheral part of the packaging bag 100 along the axial direction of a roller, and the area | region 204 which does not press a film, respectively. Of the circumferential length of the cylindrical roller 22, the length of the gap coincides with the length of the accommodating portion 101 in the longitudinal direction, and is, for example, 30 to 105 mm. Of the length of the roller 22 in the circumferential direction, the length of the region 202 (FIG. 2: length E) is a portion provided with a solid seal at both ends in the longitudinal direction of the packaging bag 100. For example, 15 to 90 mm.

  The roller 23 also has a region for forming two packaging bags with the center in the axial direction of the roller as a boundary. Moreover, the roller 23 has the area | region 201 for giving a goza-shaped seal to the short side peripheral part of the packaging bag 100, and the area | region 204 which does not press a film along the axial direction of a roller, respectively. The rectangular area provided inside the area 201 is for forming an area for displaying a lot number, for example. Further, among the circumferential lengths of the rollers 23, the length of the region 201 (FIG. 2: length F) was provided with goza-shaped seals provided at both ends in the longitudinal direction of the packaging bag 100. It coincides with the total length of the portions and is, for example, about 12 mm.

FIG. 3 is a view of the rollers 21 to 23 of FIG. 2 as viewed from the axial direction of the rollers. Each of the rollers 21 to 23 in FIG. 2 exists in pairs (two), and the rollers 21 a to 23.
Two films 205 are sandwiched between a and the rollers 21b to 23b. Further, the two films are sent to the roller with the filling means 203 interposed therebetween.

  The manufacturing apparatus according to the present embodiment feeds two superposed films in the direction indicated by the white arrow in FIG. And the manufacturing apparatus which concerns on this embodiment welds a predetermined | prescribed area | region by applying the heat | fever to a film with the superheating means which is not shown in figure, for example, and the area | region 201 and area | region 202 of a roller press two films. At the stage where the three sides of the accommodating portion 101 are bonded together by the roller 21 and the roller 22, the filling means 203 discharges the contents and fills the accommodating portion 101 with the contents. Thereafter, the container 101 is sealed by the roller 22, and both ends in the longitudinal direction of the packaging bag 100 are further firmly welded by the roller 23.

  In addition, the manufacturing apparatus of the packaging bag 100 is used at the time of opening, the film feeding means for sending a film, the marking means for marking lot numbers, etc., in addition to the rollers and filling means shown in FIGS. You may make it include the notch formation means which forms an opening assistance part (notch), the cutting | disconnection means of the vertical direction and horizontal direction which cut | disconnect each of the packaging bags 100, etc. FIG. In this embodiment, a horizontal seam roller for applying a solid seal and a horizontal seam roller for applying a goza-eyed seal are provided. However, the horizontal seam roller can be used as a single seam roller, It may be included. In addition to the linear “I notch” shown in FIG. 1, a V-shaped “V notch”, a home base-shaped “base notch”, or the like can be adopted as the shape of the opening assisting portion.

  According to the manufacturing apparatus according to the present embodiment, it is possible to manufacture the packaging bag 100 that secures a surface area for displaying predetermined matters. At the same time, in the manufacturing apparatus according to the present embodiment, the width in the short direction of the storage unit 101 is set to a width that allows the user to hold the gap between both ends in the short direction of the storage unit 101 with a gap between the fingers. Thereby, the packaging bag 100 which improved the ease of extrusion of the contents can be manufactured.

  In addition, if the content is to be filled to the full capacity of the accommodating portion 101, the liquid level of the content may approach the welded portion at the time of sealing, which may cause a seam defect. The housing part 101 of the packaging bag 100 according to the present embodiment has a sufficient length in the depth direction when the contents are filled by the filling means, and thus is preferable for avoiding the seam defect. .

  Furthermore, the manufacturing apparatus according to the present embodiment can change the capacity of the accommodating portion 101 of the packaging bag 100 to be manufactured by changing the size of the region to be sealed in the horizontal seam roller. In particular, since the storage portion 101 is provided so that the longitudinal direction of the storage portion 101 is along the longitudinal direction of the storage bag 100, the size of the storage portion 101 in the longitudinal direction can be widely changed. At this time, the position of the filling means 203 does not need to be changed, and various sizes of packaging bags can be manufactured by exchanging the rollers 22, for example. That is, it is possible to deal with the production of packaging bags with a wide range of capacity using the same equipment as much as possible, and it is possible to reduce the cost associated with the production apparatus.

  2 and 3, the manufacturing apparatus according to the present embodiment is configured to be able to manufacture two packaging bags at the same time, but the number of packaging bags that can be manufactured simultaneously is two. Is not limited. In addition to the method of forming two packaging bags in a direction substantially orthogonal to the film feeding direction shown in the embodiment (two-line type), one packaging bag is formed in a direction substantially perpendicular to the film feeding direction. A system (single system), a system for forming four packaging bags (quadruple system), and other systems can be employed.

As mentioned above, the packaging bag which concerns on this Embodiment has ensured the surface area for displaying a predetermined matter by using the surface of the accommodating part 101 and the welding part as a display part. In addition, the width of the accommodating portion 101 (that is, the length of the accommodating portion 101 in the short direction) is set to a size that allows the user to hold the gap between the both ends without a gap, thereby improving the ease of taking out the contents. Yes. And since the accommodating part 101 has taken sufficient depth in the direction (namely, the longitudinal direction of the accommodating part 101) with which a filling means discharges the contents, it has the shape which is easy to perform the filling of the contents, In addition, the length of the accommodating portion 101 in the longitudinal direction can be widely changed according to the capacity of the contents. In addition, when changing the length of the longitudinal direction of the accommodating part 101, the filling means (nozzle) of a manufacturing apparatus does not need to change a position from the center of the transversal direction of a packaging bag.

<Modification 1>
In addition, as described above, the packaging bag 100 according to the present embodiment can change the size of the housing portion 101 in the longitudinal direction by changing the roller 22 shown in FIGS. it can. That is, the manufacturing apparatus according to the present embodiment can manufacture a packaging bag suitable for filling a smaller amount of contents by changing the roller 22. For example, by increasing the width F of the roller 22 shown in FIG. 2, it is possible to manufacture a storage bag 100a having a storage portion 101a having a smaller size in the longitudinal direction as shown in FIG.

  The packaging bag 100a as shown in FIG. 4 can also secure a surface area for displaying predetermined matters. Further, the width in the short direction of the container 101a of the packaging bag 100a is set to a width that allows the user to hold the gap between both ends in the short direction of the container 101a with no gaps between the fingers. Can be improved. And since the accommodating part 101a has taken sufficient depth in the direction (namely, the longitudinal direction of the accommodating part 101a) which a filling means discharges the contents, it has the shape which is easy to perform the filling of the contents, In addition, the length in the longitudinal direction of the accommodating portion 101a can be widely changed according to the capacity of the contents.

  4 is formed to be biased to one end in the longitudinal direction of the packaging bag 100a, it may be formed on the other end side, or may be formed in the center in the longitudinal direction. It may be.

<Modification 2>
Moreover, a packaging bag as shown in FIG. 5 can also be employed. The packaging bag 100b in FIG. 5 is the same as the example in FIGS. 1 and 4 in that a part of the accommodating portion 101b is provided along the approximate center in the short direction of the packaging bag. However, one end in the longitudinal direction of the accommodating portion 101b further extends in the short direction of the packaging bag 100b along the periphery of the packaging bag 100b. That is, the accommodating part 101b is L-shaped when viewed from the surface of the packaging bag 100b. The packaging bag 100b as shown in FIG. 5 can also secure a surface area for displaying predetermined matters. Moreover, the width | variety of the accommodating part 101b of the packaging bag 100b is made into the width | variety which a user can hold | suppress between the both ends of the transversal direction of the accommodating part 101b with a gap | interval of a finger, and the ease of taking out the contents is improved. Can do. And since accommodating part 101b has taken sufficient depth in the direction in which a filling means discharges a content, it is a shape which is easy to perform the filling of a content. Furthermore, the filling means (nozzle) of the manufacturing apparatus can increase the capacity of the accommodating portion as compared with the packaging bag 100 of FIG. 1 without having to change the position from the center in the short direction of the packaging bag.

<Modification 3>
Furthermore, you may employ | adopt the packaging bag 100c as shown in FIG. Compared with the housing part 101 of FIG. 1, the housing part 101c of FIG. 6 is provided to be biased to one end in the short direction of the packaging bag 100c. Even in the case of the packaging bag 100c as shown in FIG. 6, a surface area for displaying predetermined matters can be secured. Moreover, the width | variety of the accommodating part 101c of the packaging bag 100c is made into the width | variety which a user can hold | suppress between the both ends of the transversal direction of the accommodating part 101c with a gap | interval of a finger, and the ease of taking out the contents is improved. Can do. And since the accommodating part 101c has taken sufficient depth in the direction which discharges a content, it is a shape which is easy to perform the filling of a content, and the accommodating part according to the capacity | capacitance of a content The length in the longitudinal direction of 101c can be changed widely.

<Comparative example>
FIG. 7 is a diagram illustrating an example of a packaging bag according to a comparative example. The packaging bag 300 of FIG. 7 has a container portion 301 that is welded at its peripheral edge and stores contents, a solid region 302, and a gossamer region 303. The packaging bag 300 is divided into two regions in the longitudinal direction, and a storage portion 301 is formed on one side and a solid region 302 is formed on the other side. Then, predetermined items are displayed on the surface of the solid region 302 or the entire surface of the packaging bag 300. Similarly to the example of FIG. 1, the length of the packaging bag 300 in the longitudinal direction is 100 to 120 mm, and the length in the lateral direction is 50 to 60 mm.

  Here, a case where a very small amount of liquid (about 0.2 to 2.0 cc or about 0.2 to 2.0 g) is accommodated in the packaging bag 300 will be considered. First, in order to take out the contents efficiently, it is preferable that the size of the accommodating portion 301 is small. This is because if the area of the inner wall of the accommodating part 301 is reduced, the amount of the contents remaining on the inner wall of the accommodating part 301 when the contents are taken out can be reduced. However, the length in the longitudinal direction and the length in the short direction of the accommodating portion 301 are not designed so that the user can press between both ends with a finger without a gap. Therefore, in such a packaging bag 300, when the user pushes out the contents toward the opening, the contents turn around in the opposite direction to the direction in which the contents are pushed out in the housing portion, and the contents are It is difficult to push out everything.

  Further, as described above, when the contents are filled to the full capacity of the accommodating portion 301, the liquid level of the contents may approach the welded portion at the time of sealing, which may cause a seam defect. Here, if a case where a predetermined amount of contents are filled into a columnar accommodating portion having the same volume is considered, the smaller the vertical sectional area of the accommodating portion is, the smaller the opening portion of the accommodating portion is. And the liquid level of the contents are increased. This distance is preferable in order to avoid the seam defect. Therefore, when the container 301 shown in FIG. 7 is filled with a predetermined amount of contents, the container 301 is filled in the longitudinal direction of the container 301 rather than being filled along the direction W which is the short direction of the container 301. Filling the contents along a certain direction X is preferable in order to avoid seam defects.

  In this respect, the accommodation bag 100 according to the present embodiment shown in FIG. 1 has a sufficient depth of the accommodation portion 101, and thus is preferable in avoiding the seam defect than the example of FIG. Yes.

  Next, consider the case of manufacturing packaging bags having different contents using common equipment as much as possible. When changing the capacity of the container 301 shown in FIG. 7, the size is changed in the direction Z which is the longitudinal direction of the packaging bag 300, rather than the size in the direction Y which is the short direction of the packaging bag 300. The range of capacity that can be handled becomes wider. That is, by using a roller that welds with a predetermined width in the direction Y, and by replacing a plurality of rollers that can be welded in a size according to the inner volume in the direction Z, packaging bags with various inner capacities are obtained. Can be manufactured.

  However, enlarging the size in the Z direction leads to a decrease in the ease of taking out the contents described above, so it cannot be said that it is preferable to make a comprehensive judgment.

Compared with the above example, the packaging bag according to the present embodiment and the modification shown in FIG. 1, FIG. 4, FIG. 5 or FIG. By setting the length so that the user can press it with a finger without any gaps, the user can push out the contents at a time by holding the accommodating portion with his / her hand, so that the contents can be easily taken out. Moreover, the packaging bag of FIG.1, FIG.4, FIG.5 or FIG. 6 will have sealing failure because the depth of the accommodating part is taken sufficiently if the contents are filled along the longitudinal direction of the accommodating part. It is difficult to occur and the contents can be easily filled. Furthermore, since the accommodating part is provided along the longitudinal direction of the packaging bag, even when changing the capacity of the accommodating part, it is possible to cope with a wide range of capacity by changing the size of the accommodating part in the longitudinal direction. It is like that.

100 Packaging Bag 101 Container 102 Solid Area (Welding Area)
103 Goza eyes area (welded part)
104 Opening assisting portion 21 Vertical seam roller 22 23 Horizontal seam roller 201 Area (goza eyes)
202 area (solid)
203 Filling means

Claims (4)

A packaging bag in which two films are overlapped, the periphery is welded and formed into a bag shape, and predetermined information is displayed on at least a part of the surface,
A storage section for storing contents;
A welding portion provided so as to surround the housing portion, the two films being welded;
Have
The accommodating portion is provided such that the longitudinal direction of the accommodating portion is along the longitudinal direction of the packaging bag,
A packaging bag having a length that allows a user to press between both ends of the width of the housing portion with a finger without a gap. The packaging bag according to claim 1, wherein the accommodating portion has a width of 15 to 27 millimeters. The packaging bag according to claim 1, wherein the housing portion is provided along a substantially center of the packaging bag in a short direction. An apparatus for manufacturing a packaging bag, which is formed into a bag shape by welding two overlapped films, and displays predetermined information on at least a part of the surface,
First welding means for welding a peripheral edge portion in the short direction of the packaging bag;
A second welding means for welding the peripheral edge of the packaging bag in the longitudinal direction;
Have
The first welding means and the second welding means form a storage portion for storing contents so that the longitudinal direction of the storage portion is along the longitudinal direction of the packaging bag, and the two films Forming a welded portion so as to surround the housing portion,
An apparatus for manufacturing a packaging bag, the length of which allows a user to hold between both ends of the width of the housing portion with a finger without a gap.

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