JP6291880B2 - Package and method for producing the same - Google Patents

Description

  The present invention relates to a packaging body in which contents are stored in an easily openable packaging bag and a method for manufacturing the same, and in particular, after forming a body portion by forming a packaging material into a cylindrical shape by back-sealing seal processing, the back-sealing seal portion It is related with the package body which folds by arrange | positioning in the approximate center, heat-sealing both ends, flattening, and sealing a top part and a bottom part.

  Conventionally, a so-called pillow package that rolls a piece of packaging material into a cylindrical shape to form a palm-like back-sealed seal and stores the contents between the top and bottom seals is used for a variety of applications. Has been. The most common method for opening a package having such a structure is to provide an opening notch at the end of the top seal portion and open the package vertically downward from here.

  However, according to this method, the cracks of the packaging material are often shifted to the side, and a continuous opening to the bottom may not be obtained. Even if it can be opened to the bottom, there is no problem if it is a rigid and slippery content such as a hail, but for example, if it is a thin and thin material such as a condom, it will be opened. In some cases, it was difficult to pick out the contents from the department.

  If the opening position is set so as to penetrate deeply into the contents in order to improve the pick-up property from the opening, the contents may be damaged at the time of opening.

  As another method for opening the pillow package, there is a method in which two opening notches are provided in the back-sealed seal portion, and a portion sandwiched between the two opening notches is used as an opening start portion to open horizontally from here. It has been.

  However, this method is effective when a large number of vertically elongated bar-like contents are stored, such as a stick-shaped confectionery, but it is thin and has no waist, such as a wet tissue. It is unsuitable for contents with stacked contents.

  In this way, even with the same pillow packaging bag, various opening structures are required depending on the shape and properties of the contents and the method of use.

  The easy-open bag described in Patent Document 1 is provided with a notch at the intersection of the back-pasted part and the front-edge welded part of the palm joint, and this is used as the opening start point to remove the back-sealed seal part like an open band. This is a packaging bag that can be opened.

  The easy-open bag described in Patent Document 1 has a feature that an outlet having a large opening diameter can be obtained relatively stably while having an extremely simple structure, but the shape of the outlet is linear. However, since the opening area is small, it could not be applied to contents such as flattened articles that overlap to some degree, slippery contents, or delicate and easily damaged contents. .

  Similarly, the easy-open packaging bag described in Patent Document 2 is a pillow-type packaging bag in which a slit is provided in the joint seal portion and a V-shaped cut line is provided from the cut portion to the edge seal portion. It is.

In the easy-open packaging bag described in Patent Document 2, since the cut starting from the opening start portion spreads in a V shape, the opening is naturally performed without difficulty, and the cut stops at the edge seal portion. The opened piece does not dissociate, and simple re-sealing is possible.

  However, since the easy-open packaging bag described in Patent Document 2 has a structure in which the head of the package is opened, the flat articles overlapped as in the easy-open bag described in Patent Document 1. It was not possible to apply to such contents or contents with poor slip.

Utility Model No. 3035855 JP 2009-40509 A

  The problem to be solved by the present invention is particularly good in opening and taking out even if the contents are flat and thin and have no waist, contents that are not slippery, or contents that are delicate and easily damaged. A package and a method for manufacturing the package are proposed.

As a means for solving the above-mentioned problems, the invention according to claim 1 is characterized in that both side ends of a packaging material composed of a laminate having a heat-sealable resin layer as the innermost layer are heat-sealed in a palm-like shape. A packaging body having a cylindrical body portion in which a sticking seal portion is formed in the vertical direction,
The base line of the back-sealed seal part is arranged in the approximate center, the back-sealed seal part is folded down to one side, the body part is folded flat, and both sides are heat-sealed,
Bottom and top of the package body, the back sticking Ri seal portion is brought down to one side, which is heat-sealed in close contact with the body portion of the package,
At the top of the back-sealed seal part, there is a notch for opening that triggers opening,
The packaging material that forms the trunk is provided with a pair of left and right opening guide lines,
The opening guiding line is formed by a fragile process, a score line that does not penetrate the packaging material, is formed symmetrically about line baseline of the back lined seal portion, near the base line of the back sticking Ri seal portion , and the and from the setting in height have been the starting point between the opening notch and the top seal portion, continuous to reach the end point set in the vicinity when among intersections of the side seal and the bottom seal portion The package is a line or a continuous line starting from the start point in the horizontal direction and descending in a parabolic shape or elliptic curve shape and reaching the end point .

  The packaging according to the present invention can be opened from the notch for opening provided in the back-sealed seal portion, and a large opening can be formed along the opening guide line extending in the left-right width direction. It is easy to take out things.

Further, in the invention according to claim 2, both end portions of the packaging material made of the laminate having the heat-sealable resin layer as the innermost layer are heat-sealed in a palm shape to form the back-sealed seal portion in the vertical direction. A package having a cylindrical body,
The base line of the back-sealed seal part is arranged in the approximate center, the back-sealed seal part is folded down to one side, the body part is folded flat, and both sides are heat-sealed,
The bottom and top of the package are heat-sealed in a state where the back-sealed seal part is tilted to one side and in close contact with the trunk of the package,
At the top of the back-sealed seal part, there is a notch for opening that triggers opening,
The packaging material that forms the trunk is provided with a pair of left and right opening guide lines,
The opening guide line is a score line that is formed by fragile processing and does not penetrate the packaging material, and is formed symmetrically with respect to the base line of the back-sealed seal portion, in the vicinity of the base line of the back-sealed seal portion. Yes, starting from the start point set at the height between the opening notch and the top seal part, proceeding linearly diagonally downward, curving in front of the side seal part and turning downward , Descending along the side seal part, a continuous line reaching the end point set in the vicinity of the inside of the intersection of the side seal part and the bottom seal part, or once descending starting from the start point, After passing through the vicinity of the opening notch, it curves and changes direction toward the side seal part, spreads in a substantially straight line, then curves in front of the side seal part and turns downward again, and the side seal part Descends along A hull Sokarada you being a continuous line extends in the left-right width direction of the packaging bag to reach the end point.

The invention according to claim 3 stores flat contents, and the opening guide wire is drawn so as to cross the outer periphery of the contents, and at least the contents are opened from the opening after opening. The package according to claim 1 or 2 , wherein 50% or more of one side or the outer periphery of the article is exposed.

Further, the invention according to claim 4 is the JIS of the heat seal resin layer as the innermost layer and the contents.
The package according to any one of claims 1 to 3 , wherein the static friction coefficient defined in K7125 is 0.3 or more.

Further, the invention according to claim 5, the contents are immersed water, alcohol, oil, a fluid such as a chemical solution, characterized in that at least the surface is wet state, one of the claims 1-4 1 The package according to item.

The invention according to claim 6 is the package according to any one of claims 1 to 5 , wherein the waist strength of the contents is lower than the waist strength of the packaging bag.

The invention described in Claim 7, wherein the opening guiding line is formed by a laser processing method, one of the claims 1-6, characterized in that does not penetrate the innermost layer of heat sealable resin layer of the packaging material Or a package according to item 1.

The invention of claim 8 is a method for producing a packaging according to any one of claim 1 7, characterized in that it comprises the following steps in this order. That is, a process of forming an opening guide line by a laser processing method on a printed packaging material. A process of slitting the printed packaging material to a predetermined width. Serra Ri seal portion to form a side seal portion, a step of providing a tear notch.

  The packaging body according to the present invention has the base line of the back-sealed seal portion disposed at the approximate center, the back-adhered seal portion is tilted to one side, the body portion is folded flat, and heat is applied along the ring portions of the packaging material at both ends. Since it has the side seal part which gave the seal | sticker, the waist strength which is the force which a packaging bag maintains a flat shape with respect to an external stress is strong. For this reason, even when the waist strength of the contents is low or when the occupancy of the contents is low compared to the packaging bag, the opening and closing of the packaging material on the front and back surfaces is suppressed, and the opening is guided from the opening notch. It becomes possible to open stably along a line. Moreover, the opening is smooth, and it is difficult for the contents to be damaged or dropped when opening. Further, the contents are not reversed in the packaging bag.

  Moreover, since the package which concerns on this invention opens from a back sticking seal | sticker part, even if it is a case where the content which needs recognition of front and back is accommodated, it does not take out the front and back by mistake.

  In addition, an opening notch is provided at the upper part of the back-sealed seal part, and the packaging material forming the body part starts from the opening notch and the right and left packaging materials are easily torn. Since a pair of left and right opening guide lines for capturing and guiding the tears in the packaging material proceeding in the direction are provided, the opening can be smoothly opened from the notch for opening along the opening guide lines.

Moreover, opening guide wire is formed symmetrically about line baseline of the back lined sealing unit is in the vicinity of the back sticking Ri seal portion baseline, and, between said opening notch and the top seal portion Since it is a continuous line that starts from the start point set at the height, spreads in the left-right width direction of the packaging bag, and reaches the end point set near the inside of the intersection of the side seal part and the bottom seal part, it is wide. An opening having an opening area is obtained.

  For this reason, the packaging bag according to the present invention is a content that is difficult to pull out from the opening portion of the packaging bag because the contents are flat, the surface is viscous, and the slipperiness is poor. By opening a single side of the packaging bag through a notch for opening provided on the back-sealed seal portion, it is possible to take out cleanly without dropping the contents.

  After opening, the unsealed portion attached to the back-sealed seal portion does not break off and does not come off, so it does not become dust and can be easily resealed.

As in the first aspect of the invention, when the opening guide line is a curve that starts in the horizontal direction from the start point and descends in a parabolic shape or an elliptic curve shape and reaches the end point, the opening guide line is smooth. Since it is a simple curve, the tear of the packaging material at the time of opening is hard to deviate and the opening property is good.

Further, as in the invention described in claim 2 , the opening guide line starts from the starting point, descends once, passes through the vicinity of the opening notch, and then curves and changes direction toward the side seal portion. After spreading in a straight line, curving in front of the side seal part and turning downward again, descending along the side seal part and reaching the end point, the optimum wide according to the shape of the contents An opening is obtained.

Further, as in the invention described in claim 3 , flat contents are stored, and the opening guide line is drawn so as to cross the outer periphery of the contents, and at least the contents are opened from the opening after opening. When 50% or more of one side or the outer periphery of the object is exposed, the contents can be easily taken out, and there is a part where the opening guide wire and the outer periphery of the contents intersect, so the contents fall. Hateful.

Further, when the static friction coefficient between the heat seal resin layer of the innermost layer and the content is not less than 0.3 and the slipperiness is poor as in the invention described in claim 4 , for example, the content is a transdermal drug. In the case of skin, artificial skin, oral deliquescent medicine, etc., it is difficult to take out the contents by the conventional opening method that opens the end of the bag, but in the package according to the present invention, Yes.

Further, as in the invention described in claim 5 , the contents are immersed in a fluid such as water, alcohol, oil, chemical solution, etc., and at least the surface is in a wet state, for example, clean cotton, lotion cotton, aromatic nonwoven fabric, etc. Even so, since the single side of the packaging body opens greatly, the contents can be easily taken out without being damaged. This is the same even when the waist strength of the contents is lower than the waist strength of the packaging bag as in the invention described in claim 6 .

Further, when the opening guide line is formed by a laser processing method as in the invention described in claim 7 , the heat seal of the innermost layer is obtained by optimally combining the layer structure of the packaging material and the wavelength of the laser. It is easily possible not to penetrate the conductive resin layer, and a package with stable quality can be obtained. Moreover, the freedom degree of the shape of an opening guide line increases.

FIG. 1 (1) is a schematic view showing an embodiment of a package according to the present invention. FIG. 1 (2) is a development view of the packaging material used in the package of FIG. 1 (1). Fig. 2 (1) is a schematic view showing another embodiment of the package according to the present invention. FIG. 2 (2) is a development view of the packaging material used in the package of FIG. 2 (1). FIG. 3 is a schematic view showing another embodiment of the package according to the present invention. FIG. 4 is a schematic view showing a package of Comparative Example 1. FIG. 5 is a schematic view showing a package of Comparative Example 2. FIG. 6 is a schematic view showing a package of Comparative Example 3. FIG. 7 is a schematic view showing a package of Comparative Example 4.

Hereinafter, the package according to the present invention will be described in detail with reference to the drawings.
Fig. 1 (1) is a schematic view showing one embodiment of a package (1) according to the present invention. FIG. 1 (2) is a development view of the packaging material (2) used in the package of FIG. 1 (1). In FIG. 1 (2), the hatched portion indicates the planned seal portion (10).

  As shown in FIG. 1, the packaging body (1) according to the present invention has both ends (3, 3) of the packaging material (2) made of a laminate having a heat-sealable resin layer as the innermost layer. It is the package which has the cylindrical trunk | drum which heat-sealed in the shape and formed the back | pasted sticker part (4) in the vertical direction.

  Place the base line (4a) of the back-sealed seal part in the approximate center, fold the back-sealed seal part (4) to one side, fold the body part flat, and heat-seal along the ring parts of the packaging material at both ends It has an applied side seal (7).

  Even if there is no side seal part (7), it is established as a packaging bag, but the presence of the side seal part (7) improves the flatness of the packaging bag and increases the waist strength of the packaging bag. Stable handling properties, that is, unsealing property, taking out property, etc. are exhibited even for weak contents.

Bottom and top portions of the package (1) is Serra Ri seal portion (4) is brought down to one side, are heat-sealed in close contact with the body portion of the package, respectively top seal portion (5) The bottom seal portion (6) is formed.

  An opening notch (9) is provided in the upper part of the back-sealed seal part (4), which triggers opening, and the packaging material forming the body starts from the opening notch (9), A pair of left and right opening guide lines (8, 8) are provided for capturing and guiding a tear in the packaging material that proceeds in a direction in which the left and right packaging materials are easily torn.

  The unsealing guide line (8) is a score line that is formed by fragile processing and does not penetrate through the packaging material, and is formed symmetrically about the base line (4a) of the back-sealed seal part.

Opening guide wire (8) is in the vicinity of the base line (4a) of Serra Ri seal portion (4), and is set at a height between the opening notch (9) and the top seal portion (5) Starting from the starting point (s), it continues in the left-right width direction of the packaging bag and reaches the end point (e) set near the inside of the intersection of the side seal portion (7) and the bottom seal portion (6). Line.

  In the embodiment shown in FIG. 1, the opening guide line (8) is a curve that starts from the start point (s) in the horizontal direction and descends in a parabolic or elliptic curve shape and reaches the end point (e). When the opening guide line has such a smooth shape, the tear of the packaging material does not easily deviate, and the opening can be reliably and smoothly opened.

  In the embodiment shown in FIG. 2, the positions of the start point (s) and the end point (e) of the opening guide line (8) are substantially the same as in FIG. 1, but the route on the way is different. In the example of FIG. 2, the opening guide line (8) starts from the starting point (s), and once descends, passes through the vicinity of the opening notch (9), and then curves to the side seal portion (7). The direction changes to, spreads in a substantially straight line, then curves in front of the side seal part, changes direction downward again, descends along the side seal part (7), and reaches the end point (e).

  Further, in the embodiment shown in FIG. 3, the opening guide line (8) starts from the starting point (s) and proceeds linearly obliquely downward, curves in front of the side seal portion (7), and faces downward. And descend along the side seal part to reach the end point (e).

  Thus, the shape of the opening guide wire (8) itself is not particularly limited, but it is necessary that the opening guide wire (8) has a wide opening diameter and a sufficient opening area. For this reason, especially when the content (11) is flat and has a large horizontal projected area, the unsealing guide line (8) is drawn so as to cross the outer periphery of the content (11). Moreover, it is desirable that at least 50% of one side or the outer periphery of the contents (11) is exposed from the opening after opening.

  By designing the opening guide wire (8) in this way, it is possible to easily take out contents that are difficult to take out due to poor sliding. Further, when the opening guide line crosses the outer periphery of the contents, it is possible to prevent the contents from dropping unintentionally when the opening is opened.

  In the package (1) according to the present invention, in particular, the contents (11) are immersed in a fluid such as water, alcohol, oil, or a chemical solution, and at least the surface is in a wet state, or the surface is sticky or adherent. This is particularly effective when the friction coefficient between the contents and the heat-sealable resin layer that is the innermost layer of the packaging material (the static friction coefficient defined in JIS K7125) is 0.3 or more. Demonstrated.

  In addition, the package (1) according to the present invention exhibits its effect even when the contents (11) have low waist strength and are weaker than the waist strength of the packaging bag. When manually cutting and opening from the opening notch (9) of the back-sealed seal portion, if the waist strength of the packaging bag exceeds the waist strength of the contents, the trunk portion of the packaging bag will break near the notch placement when opening. The hand cutting line does not follow the opening guide line and deviates in the body width direction, and as a result of the packaging bag being bisected in an unexpected direction, the contents are dropped. A similar problem occurs when the content occupancy is small relative to the inner volume of the packaging bag. Such a problem is unlikely to occur in the package according to the present invention.

  As a method for forming the opening guide line (8), there are a method using a cutter such as a die cutter and a method using a laser. In the case of forming by laser processing, only a specific layer can be selectively cut by combining the laser wavelength and the layer structure of the laminate. As a result, it is possible to easily prevent the innermost heat-sealable resin layer from penetrating, and a product with stable quality can be obtained.

  In addition, drawing of the opening guide line by laser has a high degree of freedom in shape, and an optimal opening guide line can be designed according to the purpose.

Next, the material used for the package (1) according to the present invention will be described.
The layer structure of the laminate constituting the packaging material (2) is not particularly limited except that the innermost layer has a heat-sealable resin layer. The most basic layer configuration is a configuration comprising a base film / heat-sealable resin layer. However, an adhesive layer for bonding them, a printing layer, and the like may naturally be included.

  Examples of the layer added to the two layers include a gas barrier layer and an intermediate layer. As a special application, a light shielding layer, an ultraviolet absorption layer, or the like may be added. The base material layer may also serve as a gas barrier layer.

  As the base material layer, a biaxially stretched film such as a polyethylene terephthalate resin film (PET), a stretched polypropylene resin film (OPP), or a stretched nylon film (ONy) is generally used in consideration of printability. It is done.

  As the gas barrier layer, aluminum foil, aluminum vapor deposition film, metal oxide vapor deposition film, various gas barrier resin films and the like are used.

  As the heat-sealable resin layer, polyolefin resins such as polyethylene resin and polypropylene resin are most commonly used. In the case of the packaging bag according to the present invention, particularly easy peelability is not required. Among them, low density polyethylene resin (LDPE), linear low density polyethylene resin (LLDPE), non-stretched, which have good sealability. A single resin such as polypropylene resin (CPP) is sufficient. The heat-sealable resin layer may be laminated by extruding the resin and extruding it to the base material layer, or by bonding one formed into a film.

  For laminating these layers, a dry laminating method using an adhesive, an extruding laminating method in which an adhesive resin is extruded from a T die, and a combination thereof are used.

  For the production of the packaging material (2), first, the substrate layer is subjected to a necessary printing process and bonded to the intermediate layer or the heat-sealable resin layer to obtain a laminate. Next, an opening guide wire (8) is formed in the packaging material (2), and slit processing is performed to a predetermined width. The opening guide line (8) may be formed after the slit processing, but it is more efficient to form the opening guide lines together in a wide state. All of the above steps are continuously performed in a winding state.

In the filling factory, the wound packaging material (2) is unwound, the back-sealed seal portion (4) is formed and processed into a cylindrical shape, and the contents are filled, and the side seal portion (7), top portion A seal part (5) and a bottom seal part (6) are formed. The top seal part (5) and the bottom seal part (6) may be formed at the same time and cut at the center. Finally, an opening notch (9) is formed to complete the package.
Hereinafter, based on an Example, the package which concerns on this invention is demonstrated more concretely.

As the structure of the packaging material, the following two types of laminates A and B were prepared. The meanings of the abbreviations are as follows.
PET: Polyethylene terephthalate resin film PAN: Polyacrylonitrile resin film PE: Polyethylene resin LDPE: Low density polyethylene resin AL: Aluminum foil EX: Extrusion laminate (including anchor treatment)
DL: Dry laminate

<Layer Configuration of Laminate> Numbers indicate thickness (μm).
A: PET12 / aluminum oxide vapor deposition layer / ink / DL adhesive / PAN film 30
B: PET12 / Ink / EX (PE15) / AL7 / EX (PE15) / LDPE30

  The opening guide lines as shown in FIGS. 1 to 3 were formed on the above two types of packaging materials by laser processing, slit into a predetermined width, bag-made, and the contents shown below were stored. The contents are all distinctive.

<Contents>
Transdermal drug: Base material (nonwoven fabric) / Adhesive layer (medicinal component)
Condom: Made of urethane rubber with lubricating oil (silicone oil) applied to the surface

  The packaging body of Examples 1-3 was created by the combination of a packaging material, an opening guide wire, and the contents. The package was manually opened and evaluated for unpackability and unloadability. About opening property, it was set as (circle) when the opening opening as planned along the opening guide line was obtained, and when it was not obtained, it was set as x. As for the take-out property of the contents from the packaging bag, it was indicated as “◯” when the contents could be recognized and taken out, and “X” when the contents could not be recognized or taken out.

<Comparative example>
As a comparative example, the same packaging material used in Examples 1 to 3 was used to produce a packaging bag of the same size, and the same contents were stored. No side seal (Comparative Example 1), low opening guide wire position (Comparative Example 2), opening guide wire end point position different (Comparative Example 3), conventional opening structure The package of the four comparative examples of (comparative example 4) was created.

Table 1 shows combinations of packaging materials, opening guide wire shapes, contents, and the like used in Examples 1 to 3 and Comparative Examples 1 to 4, and evaluation results.

  As can be seen from Table 1, the packaging bodies of Examples 1 to 3 according to the present invention are good results for both the opening suitability and the take-out suitability, whereas the packaging bodies of Comparative Examples 1 to 3 are opened. The suitability was poor and the take-out suitability was not evaluated. In addition, the package of Comparative Example 4 could not be taken out although it had good opening suitability.

  As described above, the package according to the present invention exhibits good opening suitability and take-out suitability even when contents that are thin, weak, and have poor surface slipperiness are stored.

DESCRIPTION OF SYMBOLS 1 ... Packaging 2 ... Packaging material 3 ... Side edge part 4 ... Back sticking seal part 5 ... Top seal part 6 ... Bottom seal part 7 ... Side seal part 8 ... Opening guide line 9 ... Opening notch 10 ... Seal scheduled part 11 ... Contents s ... Start point e ... End point

Claims (8)

It is a packaging body having a cylindrical trunk portion in which both side ends of a packaging material made of a laminate having a heat-sealable resin layer as an innermost layer are heat-sealed in a palm shape and a back-sealed seal portion is formed in the vertical direction. And
The base line of the back-sealed seal part is arranged in the approximate center, the back-sealed seal part is folded down to one side, the body part is folded flat, and both sides are heat-sealed,
Bottom and top of the package body, the back sticking Ri seal portion is brought down to one side, which is heat-sealed in close contact with the body portion of the package,
At the top of the back-sealed seal part, there is a notch for opening that triggers opening,
The packaging material that forms the trunk is provided with a pair of left and right opening guide lines,
The opening guiding line is formed by a fragile process, a score line that does not penetrate the packaging material, is formed symmetrically about line baseline of the back lined seal portion, near the base line of the back sticking Ri seal portion , and the and from the setting in height have been the starting point between the opening notch and the top seal portion, continuous to reach the end point set in the vicinity when among intersections of the side seal and the bottom seal portion A package comprising a line or a continuous line starting in the horizontal direction from the start point and descending in a parabolic or elliptic curve shape and reaching the end point . It is a packaging body having a cylindrical trunk portion in which both side ends of a packaging material made of a laminate having a heat-sealable resin layer as an innermost layer are heat-sealed in a palm shape and a back-sealed seal portion is formed in the vertical direction. And
The base line of the back-sealed seal part is arranged in the approximate center, the back-sealed seal part is folded down to one side, the body part is folded flat, and both sides are heat-sealed,
The bottom and top of the package are heat-sealed in a state where the back-sealed seal part is tilted to one side and in close contact with the trunk of the package,
At the top of the back-sealed seal part, there is a notch for opening that triggers opening,
The packaging material that forms the trunk is provided with a pair of left and right opening guide lines,
The opening guide line is a score line that is formed by fragile processing and does not penetrate the packaging material, and is formed symmetrically with respect to the base line of the back-sealed seal portion, in the vicinity of the base line of the back-sealed seal portion. Yes, starting from the start point set at the height between the opening notch and the top seal part, proceeding linearly diagonally downward, curving in front of the side seal part and turning downward , Descending along the side seal part, and within the intersection of the side seal part and the bottom seal part
A continuous line that reaches the end point set in the vicinity, or descends starting from the start point, passes through the vicinity of the opening notch, then curves and changes direction toward the side seal part, After spreading in a straight line, it is curved in front of the side seal part, turns downward again, descends along the side seal part and reaches the end point with a continuous line spreading in the left-right width direction of the packaging bag wrapped Sokarada it said that there. Flat contents are stored, and the opening guide line is drawn so as to cross the outer periphery of the contents, and at least 50% or more of one side or the outer periphery of the contents is exposed from the opening after opening. The package according to claim 1 or 2 , characterized in that: The package according to any one of claims 1 to 3 , wherein a static friction coefficient defined by JIS K7125 between the innermost heat seal resin layer and the content is 0.3 or more. The package according to any one of claims 1 to 4 , wherein the contents are immersed in a fluid such as water, alcohol, oil, or a chemical solution, and at least the surface is wet. The package according to any one of claims 1 to 5 , wherein the waist strength of the contents is lower than the waist strength of the packaging bag. The package according to any one of claims 1 to 6 , wherein the opening guide line is formed by a laser processing method and does not penetrate the innermost heat-sealable resin layer of the packaging material. The manufacturing method of the package according to any one of claims 1 to 7 , wherein the following steps are included in this order.
The process of forming an opening guide line by laser processing on the printed packaging material.
A process of slitting the printed packaging material to a predetermined width.
Serra Ri seal portion to form a side seal part, provided opening notch process.

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