KR101879760B1 - Packing envelope - Google Patents

Abstract

A packaging bag according to an embodiment of the present invention is a packaging bag in which a packaging space is formed between two films by adhering a part of two overlapped films and is opened from the top, A side bonding area in which the two films are bonded to each other so as to connect both ends of the opening opening area and the lower end of the packaging bag, and a side adhesive area protruding from the side adhesive area toward the packaging space or adjacent to the side adhesive area And a plurality of protruding adhesive regions formed in the package space.

Description

Packing envelope

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging bag, and more particularly, to a packaging bag formed by bonding two sheets of film.

Packaging bags for packaging products using two resin films are used.

Such a packaging bag is manufactured by placing a product between two sheets of film and bonding the two sheets of film by applying heat and pressure to the surrounding portion of the product.

The consumer pulls the two films in the opposite direction to remove the product in the packaging bag, peeling off the two film-adhered portions, and removing the product from the packaging bag.

On the other hand, when the packaging bag is peeled off at once by applying a predetermined peeling force, the product in the packaging bag may be poured to the outside. In addition, if the product suddenly leaves the packaging envelope, the product may fall on the floor and be damaged. For example, when the medical product used in the operating room is packed in a packaging bag, the medical product may not be used if the medical product falls off the packaging bag and falls on the floor. However, since the conventional packaging bag is difficult to control the opening degree, there is a disadvantage that the packaging bag is opened more than expected when the packaging bag is opened, or the user is hard to recognize the opening degree.

A problem to be solved by the present invention is to provide a packaging bag which can easily adjust the opening degree of the packaging bag.

The problems of the present invention are not limited to the above-mentioned problems, and other problems not mentioned can be clearly understood by those skilled in the art from the following description.

One embodiment of the present invention for solving the above problems relates to a packaging bag which is formed by bonding a part of two overlapped films so that a packaging space is formed between two films and is opened from the upper end to the lower end side.

Wherein the packaging envelope comprises a pair of film-adhering regions for bonding the two films so as to connect the both ends of the unsealing start region and the bottom of the packaging envelope along the unsealing direction, And a plurality of protruding adhesive regions protruding from the respective side adhesive zones toward the package space.

The packaging space for accommodating the packaging article may further include a first accommodating area having a width of a gap between the pair of side adhesive areas and a pair of protruding adhesive areas And a second receiving area having a width of an interval therebetween. Further, the width of the second accommodating area is smaller than the width of the first accommodating area.

In addition, the packaging space is arranged so that the first receiving area and the second receiving area are alternately arranged along the opening direction, and the first receiving area and the second receiving area respectively receive a partial area of the packaged article.

Further, the width of the second accommodating area is set to be equal to or larger than the width of the article to be packaged.

In addition, in the process of separating the side adhesive regions along the opening direction, the peeling force at the time of entering the protruding adhesive area increases.

Further, the plurality of protruding adhesive regions may be spaced apart at predetermined intervals along the opening direction, and the spacing may be constant along the opening direction.

Further, the plurality of protruding adhesive regions are spaced apart at predetermined intervals along the opening direction, and the spacing may be formed differently at least in part along the opening direction. For example, the spacing may increase at least in part towards the bottom side of the packaging bag.

The plurality of protruding adhesion regions may be formed so that the peeling force required to separate each protruding adhesion region is 0.5 N or more.

The peel force required to separate a portion of the side bonding zones adjacent to any of the protruding bonding zones along with any of the plurality of protruding bonding zones may be 0.969 N or more and 19 N or less.

The lateral length of the protruding adhesion area may be at least one fifth of the lateral length of the side adhesive area.

The lateral length of the side adhesive region may be 0.7 cm or more.

The sum of the lateral length of the protruding bonding region and the lateral length of the side bonding region may be 0.843 cm or more and 28.36 cm or less.

The adhesive force of the protruding adhesion region and the side adhesion region may be 0.67 N / cm or more and 22.53 N / cm or less.

The two films extend to the upper portion of the opening opening region, and portions of the two films positioned above the opening opening region can be kept separated from each other.

At least a part of the plurality of protruding adhesion regions may be formed so that the transverse length is constant along the opening direction.

At least a part of the protruding adhesive areas of the plurality of protruding adhesive areas may be formed such that the transverse length linearly changes along the opening direction.

For example, at least some of the protruding adhesive regions may be provided so as to increase the transverse length along the opening direction. At least a part of the protruding adhesive regions may be provided so as to decrease after increasing the transverse direction along the opening direction.

The side adhesive region and the plurality of protruding adhesive regions may be formed by applying heat and pressure to the two films.

Other specific details of the invention are included in the detailed description and drawings.

The embodiments of the present invention have at least the following effects.

The opening degree of the packaging bag can be easily adjusted and the packaging article can be prevented from being poured out of the packaging bag at once.

The effects according to the present invention are not limited by the contents exemplified above, and more various effects are included in the specification.

1 to 3 are views schematically showing a packaging bag according to a first embodiment of the present invention.
4 is a view showing an example of using a packaging bag according to the first embodiment of the present invention.
5 is a graph showing the relationship between stress and strain in the process of peeling a conventional packaging envelope in which the width of the side adhesive area is 10 mm and the protruding adhesive area is not formed.
6 is a graph showing the relationship between stress and strain in the process of peeling a packaging bag having a width of a side adhesive region of 10 mm and a width of a protruding adhesive region of 1 mm.
Fig. 7 is a graph showing the relationship between stress and strain in the process of peeling a packaging envelope having a side adhesive zone width of 10 mm and a protruding adhesive zone width of 2 mm.
8 is a graph showing the relationship between stress and strain in the process of peeling a packaging bag having a width of a side adhesive zone of 10 mm and a width of a protruding adhesive zone of 4 mm.
9 is a graph showing the relationship between the heat sealing temperature and the heat sealing strength depending on the material of the film.
10 is a view schematically showing a packaging bag according to a second embodiment of the present invention.
11 is a view schematically showing a packaging bag according to a third embodiment of the present invention.
12 is a view schematically showing a packaging bag according to a fourth embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and the manner of achieving them, will be apparent from and elucidated with reference to the embodiments described hereinafter in conjunction with the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

Further, the embodiments described herein will be described with reference to cross-sectional views and / or schematic drawings that are ideal illustrations of the present invention. Thus, the shape of the illustrations may be modified by manufacturing techniques and / or tolerances. In addition, in the drawings of the present invention, each component may be somewhat enlarged or reduced in view of convenience of explanation. Like reference numerals refer to like elements throughout the specification.

Hereinafter, the present invention will be described with reference to the drawings for explaining a packaging bag according to embodiments of the present invention.

1 to 3 are views schematically showing a packaging bag 1 according to a first embodiment of the present invention, and FIG. 4 is a view showing an example of using a packaging bag according to the first embodiment of the present invention . Fig. 2 shows the packaging bag 1 in a state in which the packaging article 100 is accommodated. Fig. 3 shows the packaging bag 1 in which the packaging article is omitted.

1 to 3, a packaging bag 1 according to a first embodiment of the present invention is formed by adhering a part of two films 11 and 12 in a superimposed state. The packaging bag 1 can be manufactured in such a manner that the two films 11 and 12 are adhered by applying heat and pressure in the overlapped state. In this case, a thermoplastic resin film can be used as the two films 11 and 12, and heat and pressure are applied to the two films 11 and 12 without using an adhesive to form the two films 11 and 12, 12 may be adhered to each other.

1 to 3, a packaging bag 1 according to a first embodiment of the present invention includes bonding areas 21, 22, 23 and 24, a packaging space 32 in which the packaging article 100 is accommodated, And includes a handle portion 31.

Specifically, the packaging bag 1 has an opening opening area 21 formed at an upper portion of the packaging space 32, and a pair of open side open end areas 21, A pair of side adhesive zones 22 to which the two films are adhered and a plurality of protruding adhesive zones 23 protruding from the respective side adhesive zones 22 toward the packaging space do. In addition, the packaging bag 1 may include a packaging article 100 accommodated in a packaging space 32.

The packaging space 32 and the handle 31 are so arranged that the two films 11 and 12 are kept separated and the two films 11 and 12 .

1 to 3, the adhesive regions 21, 22, 23 and 24 include an opening opening region 21, a side adhesive region 22, a protruding adhesive region 23 and a bottom adhesive region 24 And the opening area 21, the side adhesive area 22 and the bottom adhesive area 24 are formed so as to surround the packaging space 32. [

In this document, the opening direction indicates the direction from the upper end to the lower end side along the y-axis direction, and the y-axis direction as the longitudinal direction, as indicated by arrows on the opening opening area 21 side of Fig. The lateral direction indicates the x-axis direction. The width pw of the packaged article 100 indicates the length along the lateral direction (x-axis direction).

In the packaging space 32, the packaging article 100 can be positioned between the two films 11 and 12. In this case, the packaged article 100 is heated and pressed between the two films 11 and 12 before the adhesive regions 21, 22, 23 and 24 are formed by applying heat and pressure to the two films 11 and 12 As shown in FIG.

As shown in Fig. 1, the packaging bag 1 according to the first embodiment of the present invention can be opened from the opening opening area 21 formed in the upper part of the packaging space 32. Fig. Two films 11 and 12 are formed on the upper part of the opening start area 21 to induce the opening of the opening area 21 and simultaneously allow the two films to be separated in the opening opening area 21. [ The handle portion 31 for holding the separated state is formed.

Therefore, the user pulls the pull tabs 31 in opposite directions to easily separate the two films 11 and 12, which are mutually bonded in the opening opening area 21, You can take it out. The handle 31 is provided to be opened along the opening direction.

The lower adhesive area 24 is formed at the lower end of the packaging bag 1 and the side adhesive area 22 is formed at one end of the opening start area 21 and one end of the lower end adhesive area 24, 21 and the other end of the lower end adhesion region 24, respectively. That is, the side adhesive regions 22 are provided in pairs so as to face each other along the width direction of the packaged article 100.

Referring to Figs. 1 to 3, a plurality of protruding adhesive regions 23 are provided in each side adhesive area 22 along the opening direction. Further, a plurality of protruding adhesive regions 23 are formed so as to protrude from the side adhesive regions 22 toward the packaging space 32, respectively. A plurality of protruding adhesive regions 23 are arranged in the longitudinal direction (y-axis direction) along the side adhesive regions 22. [

The plurality of protruding adhesive regions 23 may be formed to be spaced apart from the adjacent protruding adhesive regions 23 by a predetermined distance d along the opening direction (also referred to as the longitudinal direction). The distance d between the plurality of protruding adhesive regions 23 may be formed identically or at least partially different from each other. Specifically, the plurality of protruding adhesive regions 23 are spaced apart from each other by a predetermined distance d along the opening direction, and the spacing d may be constant along the opening direction. Alternatively, the spacing d may be formed differently at least in part along the opening direction.

3, the packaging space 32 for housing the packaging article 100 includes a first receiving area 32-1 having a width of a gap between the pair of side adhesive areas 22, And a second receiving area 32-2 having a width of a space between a pair of protruding adhesive areas 23 protruding from the side adhesive areas 22 so as to face each other in the package space 32. [ A plurality of protruding adhesive zones 23 are provided at predetermined intervals d along the longitudinal direction in each of the side adhesive zones 22 and in the pair of side adhesive zones 22, The protruding adhesive regions 23 of the protruding portions 23 are opposed to each other. The protruding adhesive regions 23 formed in the packaging bag 1 according to the present embodiment may be formed in a rectangular shape having a constant transverse length W ₂ and a longitudinal length h.

In the packaging space 32, the first receiving area 32-1 and the second receiving area 32-2 are alternately arranged along the opening direction. That is, the packaging space 32 includes a plurality of first receiving areas 32-1 and a second receiving area 32-2, and the first receiving area 32-1 and the second receiving area 32-2 are arranged along the opening direction, The regions 32-2 can be alternately arranged in succession.

In addition, the first receiving area 32-1 and the second receiving area 32-2 are provided so as to respectively receive a part of the area of the article 100 to be packaged. That is, the packaging article 100 is accommodated in the packaging space 32 across the first receiving area 32-1 and the second receiving area 32-2. At this time, the width of the second receiving area 32-2 is set to be equal to or larger than the width pw of the packaged article 100. [ That is, the width pw of the packaged article 100 is equal to or smaller than the width of the second accommodation space 32-2.

At this time, in the process of separating the side adhesive regions 22 in the packaging bag 100 along the opening direction, the peeling force at the time of entering the protruding adhesive regions 23 increases. That is, the additional peeling force as much as the adhesive force of the protruding bonding area 23 is required when passing through the protruding bonding area 23, as compared with the case where the side bonding area 22 without the protruding bonding area 23 is separated. do. That is, since the peeling force is changed according to the opening degree in accordance with the opening direction, the degree of opening can be provided to the user.

4, the packaging bag 1 according to the present embodiment is provided with a plurality of protruding adhesive zones 23 protruding toward the packaging space 32 along the side adhesive zones 22, 1) can be adjusted. That is, the user separates the two films 11 and 12 from each of the protruding adhesive areas 23 while opening the packaging bag 1 from the opening opening area 21, tactile senses the added resistance, The degree of longitudinal opening of the container 1 can be adjusted.

5 is a graph showing the relationship between stress and strain in the process of peeling a conventional packaging envelope in which the width (lateral length) of the side adhesive region is 10 mm and the protruding adhesive region is not formed, 6 is a graph showing the relationship between stress and strain in the process of peeling a packaging bag having a width (lateral length) of 10 mm and a width (lateral length) 7 is a graph showing the relationship between stress and strain in the process of peeling a packaging bag having a width (lateral length) of 10 mm and a width (lateral length) 8 is a graph showing the relationship between the stress and the strain in the process of peeling the packaging bag having the width (lateral length) of 10 mm and the width (lateral length) of the protruding adhesive region of 4 mm, between Is a graph showing the total.

As shown in FIG. 5, in the conventional packaging bag in which the protruding bonding area 23 is not formed, a rate of change of stress is small in the process of peeling the packaging bag.

In addition, as shown in FIG. 6, the side lateral length of the adhesive area (22) (W _1, Figure 1) is 10mm, and the lateral length of the projecting adhesive area (23) (W ₂₎ is even when the 1mm It can be seen that the rate of change of stress is not large during the peeling of the packaging bag.

On the other hand, Figs. 7 and 8, the side adhesive region 22, the lateral length (W _1, Figure 1) is 10mm and the extruded adhesive region 23 lateral length (W ₂₎ is 2mm of Or 4 mm, it can be seen that there are abrupt periods of stress change rate in the process of peeling the packaging bag.

7 and 8, a section where the stress is rapidly increased is a section in which separation of the protruding adhesive region 23 is started in the peeling process of the packaging bag 1, and a section in which the stress is sharply lowered, Means a section in which the separation of the protruding adhesion region 23 is completed in the separation process.

Since the packaging bag 1 according to the first embodiment of the present invention is formed with a plurality of protruding adhering areas 23 along the side adhering areas 22, as shown in FIGS. 7 and 8, And a region in which a rapid rise and a region where a stress falls sharply appear alternately.

Therefore, in the process of separating the packaging bag 1 according to the first embodiment of the present invention, as shown in FIG. 7 or 8, Since the change rate of the stress can be sensed tactily, the degree of opening of the packaging bag (1) can be felt and controlled.

The stress for separating the protruding adhesive regions 23 appearing every time the protruding adhesive regions 23 that are not separated in the process of separating the packaging bag 1 increases, It can be adjusted easily.

6 to 8, when the transverse length W ₁ of the side bonding area 22 of the packaging bag 1 is 10 mm, the sections where the rate of stress change required for opening the packaging bag 1 is abrupt it appeared that the lateral length (W ₂₎ of the extruded adhesive region 23 can be seen that more than 2mm is time.

Therefore, the opening of the extrusion bonded region 23 lateral length (W ₂₎ are side bonded region 22 lateral length (W ₁₎ is effectively the packaging bag (1) the user must be formed by more than 1/6 times of the So that the packaging bag 1 can be opened.

This can be expressed by the following equation (1).

[Equation 1]

W ₂ ≥ W _1/5

Since W _t = W ₁ + W ₂ , the relationship between W _t and W ₁ can be expressed by the following equation (2).

&Quot; (2) "

W ₂ ? W _t / 6? 0.17 * W _t

That is, it is preferable that the lateral length W ₂ of the protruding bonding area 23 is at least 1/6 times or at least 0.17 times the sum of the lateral lengths W _t of the side bonding area 22 and the protruding bonding area Do.

The first peeling force F ₁ required to separate the protruding adhesion region 23 is expressed by the following equation (3).

&Quot; (3) "

F ₁ = W ₂ * A

(F ₁ is the first peeling force (N), W ₂ is the lateral length (cm) of the protruding adhesion region, and A is the adhesion force (N / cm)

Experiments by a plurality of users to open the packaging bag 1 under various conditions revealed that when the user opens the packaging bag 1 on which the plurality of protruding adhesive regions 23 are formed, And the minimum required sensing power to detect the sensor is 0.5N.

Therefore, the first peeling force F ₁ necessary for separating the protruding adhesion region 23 should be 0.5 N or more.

Therefore, [Equation 3] can be expressed as Equation 4 below.

&Quot; (4) "

F ₁ = W ₂ * A? 0.5

The second peeling force F ₂ necessary for simultaneously separating the protruding adhesion region 23 and the side adhesion region 22 is expressed by the following equation (5).

&Quot; (5) "

F ₂ = W _t * A = (W ₁ + W ₂ ) * A

(F ₂ is a second peeling strength (N), W ₁ is the lateral length (cm), A is the adhesive force (N / cm) of the lateral length (cm), W ₂ is projected adhesive region of the adhesive side region)

Experiments by several users to open the packaging bag 1 under various conditions confirmed that the limit force at which the user can simultaneously separate the protruding bonding area 23 and the side bonding area 22 is 19N.

That is to say, the second peeling force F ₂ should be 19 N or less in order to enable the user to simultaneously separate the protruding adhesion region 23 and the side adhesion region 22 in opening the package bag 1.

Therefore, [Equation 5] can be expressed as Equation 6 below.

&Quot; (6) "

F ₂ = W _t * A = (W ₁ + W ₂ ) * A? 19

On the other hand, in order to protect the packaging article in the packaging space 32 of the packaging bag 1, the lateral length W ₁ of the side adhesive area 22 should be at least 0.7 cm.

This can be expressed by the following equation (7).

&Quot; (7) "

W ₁ ? 0.7

9 is a graph showing the relationship between the heat sealing temperature and the heat sealing strength depending on the material of the film.

As shown in Fig. 9, the heat sealing strength of the films adhered by the heat sealing method in which two films are adhered by applying heat and pressure depends on the material and the heat sealing temperature.

As shown in FIG. 9, the point A having the highest heat sealing strength is a case where LLDPE is heat sealed at about 120 degrees, and the point B having the lowest heat sealing strength is a case where IONOMER is heat sealed at about 90 degrees.

When the heat sealing strength of the A point and the heat sealing strength of the B point are substituted in N / cm units, the adhesive strength (A) ranges from 0.67 N / cm to 28.6 N / cm.

This can be expressed by the following equation (8).

&Quot; (8) "

0.67? A? 28.6

According to Equation _{6] F 2 = (W 1} + W 2) * A = W 1 * A + W 2 * A , and so by Equation _{4] W 2 * A ≥ 0.5} , F 2 = W ₁ * A + W ₂ * A? W ₁ * A + 0.5.

W ₁ ? 0.7 in the equation (7), and A? 0.67 in the equation (8), so F ₂ ? W ₁ * A + 0.5? 0.7 * 0.67 + 0.5 = 0.969.

If this is summarized together with [Equation 6], the result of Equation 9 below is derived.

&Quot; (9) "

0.969? F ₂ ? 19

That is, it is preferable that the second peeling force (F ₂ ) necessary for simultaneously separating the protruding adhesion region 23 and the side adhesion region 22 is 0.969 N or more and 19 N or less.

On the other hand, in a _{F 2 = W t * A ≤} 19 In the equation (6)], and 0.67 ≤ A ≤28.6 in Equation 8, the maximum value of W is _t, so 0.67 when the A is the minimum value, W _t The maximum value is 28.36 cm.

On the other hand, W _t = W ₁ + W ₂ , and the minimum value of W _t is 0.843 cm according to [Equation 1] and [Equation 7].

Therefore, the range of W _t is summarized as the following equation (10).

&Quot; (10) "

0.843? W _t ? 28.36

Therefore, it is preferable that the sum of the lateral lengths W _t of the side bonding area 22 and the protruding bonding area is not less than 0.843 cm and not more than 28.36 cm.

On the other hand, when the minimum value of W _t is 0.843 cm, the maximum value of the adhesive force (A) is 19 / 0.843 = 22.53 N / cm.

Therefore, [Equation 6] is summarized as Equation 11 below.

&Quot; (11) "

0.67? A? 22.53

Therefore, it is preferable that the adhesive strength A of the protruding adhesion region 23 and the side adhesion region 22 is set to 0.67 N / cm or more and 22.53 N / cm or less.

Hereinafter, a packaging bag according to another embodiment of the present invention will be described. For convenience of description, the same reference numerals are used for the components similar to those of the first embodiment, and a description of components common to the first embodiment will be omitted.

10 is a view schematically showing a packaging bag according to a second embodiment of the present invention.

The packing envelope 1 according to the first embodiment of the present invention described above is characterized in that the protruding adhesive region 23 is formed in a square having a constant transverse length W ₂ , 2 embodiment a plurality of protruding adhesive is formed on the packaging bag according to the region 223 is formed downward of the packaging bag in the lateral direction length (W ₂₎ it is linearly increased in a right triangle to.

Specifically, the protruding adhesive regions of at least some of the plurality of protruding adhesive regions 23 may be formed such that the transverse length thereof changes linearly along the opening direction, and at least a part of the protruding adhesive regions 23 are opened May be provided so that the transverse length increases along the direction.

Alternatively, although not shown, the plurality of protruding adhesive regions 223 may be formed as a right triangle in which the transverse length W ₂ decreases linearly downwardly of the packaging bag.

11 is a view schematically showing a packaging bag according to a third embodiment of the present invention.

The first packaging bag according to the second embodiment shown in Figure 10 comprises a lateral length (W ₂₎ is linearly plurality of protruding adhesive region 223 has a shape of a right triangle which increases toward the lower side. On the other hand, as shown in Figure 11, a plurality of raised bonding area 323 formed in the packaging bag according to a third embodiment of the present invention after the lateral length (W ₂₎ increased linearly decreasing again And is formed as a triangle. That is, at least some of the protruding adhesive regions 23 may be provided so as to decrease after increasing the transverse length along the opening direction.

11, the plurality of protruding adhesive regions 323 are continuously formed. However, the plurality of protruding adhesive regions 323 may be spaced apart from each other by a predetermined distance.

As shown in the packaging bags according to the first, second, and third embodiments of the present invention, the shape of the plurality of protruding adhesive regions 23, 223, and 323 is such that, when the user unpacks the packaging bag, Can be variously selected in such a manner that the separating force added due to the adhesive regions 23, 223, and 323 can be tactually detected.

12 is a view schematically showing a packaging bag according to a fourth embodiment of the present invention.

The packaging envelope according to the first, second and third embodiments described above is characterized in that a plurality of protruding adhesive areas 23, 223 and 323 extend from the side adhesive area 22 and protrude toward the packaging space 32, 11, the packaging bag according to the fourth embodiment of the present invention is characterized in that a plurality of protruding adhesive zones 423 do not extend from the side adhesive zones 22 but are located adjacent to the side adhesive zones 22 do.

12 shows an example in which the plurality of protruding adhesive regions 423 are formed to have a substantially circular shape, the plurality of protruding adhesive regions 423 may be formed to have a polygonal shape such as a rectangle, a triangle, etc., have.

It will be understood by those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

1: Packing bag
11, 12: Film
21: opening opening area
22: side adhesive area
23:
24: bottom adhesive area
31: Handle portion
32: Packaging space
100: Packing article

Claims (14)

A packaging space is formed between the two films by adhering a part of the two overlapped films, and the packaging bag is opened from the upper end to the lower end side,
A release opening region formed on the upper portion of the packaging space;
A pair of side adhesive regions to which the two films are adhered so as to connect both ends of the opening opening region and a lower end of the packaging bag along the opening direction; And
And a plurality of protruding adhesive regions protruding from the respective side adhesive zones toward the package space,
A packaging space for accommodating a packaged article includes a first receiving area having a width of a gap between a pair of side adhesive areas, a gap between a pair of protruding adhesive areas protruding from the pair of side adhesive areas And a second receiving area having a width of < RTI ID = 0.0 >
The packaging space is arranged such that the first receiving area and the second receiving area are alternately arranged along the opening direction and the first receiving area and the second receiving area are provided to respectively receive a part of the area of the packaging article,
The width of the second receiving area is not less than the width of the packaged article,
In the process of separating the side adhesive regions along the opening direction, the peeling force is increased at the time of entering the protruding adhesive area,
The lateral length of the protruding bonding region is formed to be 1/5 or more of the lateral length of the side bonding region,
The lateral length of the side adhesive region is 0.7 cm or more,
The sum of the lateral length of the protruding bonding region and the lateral length of the side bonding region is 0.843 cm or more and 28.36 cm or less,
The protruding bonding region is formed so that the transverse length is constant along the opening direction and is a rectangular shape having a constant transverse length and a longitudinal length,
The plurality of protruding open areas are spaced apart from each other along the longitudinal direction in the opening direction, and the spacing is constantly formed along the opening direction. In the pair of side adhesive areas, along the lateral direction, Packing bags arranged to face each other. delete delete The method according to claim 1,
Wherein the plurality of protruding adhesion regions
And a peel force required to separate each of the protruding adhesive regions is 0.5 N or more. 5. The method of claim 4,
Wherein a peeling force required for separating any of the plurality of protruding adhesion regions from the protruding adhesion region and adjacent to any of the side adhesion zones is 0.969 N or more and 19 N or less. delete delete delete The method according to claim 1,
Wherein the adhesive force of the protruding adhesive region and the side adhesive region is 0.67 N / cm or more and 22.53 N / cm or less. The method according to claim 1,
Wherein the two films extend to the upper portion of the opening opening region, and portions of the two films positioned above the opening opening region remain separated from each other. delete delete delete delete

Images