JP7434242B2 - Packaging material, packaging material roll, packaging bag, and packaging material manufacturing method - Google Patents

Description

The present invention relates to a packaging material, a packaging material roll, a packaging bag, and a method for manufacturing the packaging material.

BACKGROUND ART Conventionally, film-like packaging materials have been known that allow bulk foods such as rice balls, sandwiches, and cooked bread to be eaten hygienically by holding them in the hand. For example, Patent Document 1 discloses a packaging material in which a strip-shaped opening is formed and the packaging material can be opened by pinching an opening piece disposed outside the packaged food and tearing the packaging material. The packaging material has an opening piece formed by a cut that induces tearing, and a protective sheet that closes the cut is adhered to the inside.

Japanese Patent Application Publication No. 2003-341715

The protective sheet prevents foreign matter from entering the inside of the packaging material through the cuts. However, after opening, the protective sheet adhered to the inside of the packaging material remains at the end of the band-shaped opening. The protective sheet remaining inside the packaging material may get in the way when eating food, so there is room for improvement.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a packaging material that allows food to be eaten without being obstructed by the protective sheet that closes the incisions before opening.

(1) The packaging material of the present invention includes a sheet main body that can surround an object to be packaged and has an inner surface facing the object and an outer surface opposite to the inner surface, and a notch that does not open at the edge of the sheet main body. an opening piece formed on the sheet main body to enable cutting of the sheet main body; and a protective sheet disposed on the outer surface side, the protective sheet having an opening piece on the outer surface including the opening piece. It includes a protective part that is adhered to separate at least the cut from the outside, and an unsealing part that is not adhered to the outer surface and is continuous with the protective part.

(2) In (1), the entire area of the protection part is bonded to the outer surface.

(3) In (1), the protection portion may include an adhesive portion that is adhered to the outer surface around the cut, and a non-adhesion portion that is not adhered to the cut.

(4) In any one of (1) to (3), the cut tape extends in the cutting direction of the sheet main body to be cut through the opening piece and secures a cut that occurs during cutting. Preferably, it is disposed on at least one of the inner surface and the outer surface.

(5) In (4), each of at least a pair of belt-shaped sheet portions extending substantially parallel to the extending direction of the cut tape is disposed on both sides of the cut tape, and is one of the inner and outer surfaces. The packaging material according to claim 4, wherein the packaging material is disposed on at least one of the following.

(6) The packaging bag of the present invention includes a bag body in which the sheet main body of the packaging material according to any one of (1) to (5) is formed in a bag shape, and the bag body includes a bag to be packaged inside the bag body. is accommodated.

(7) In (6), the sheet body may be folded to form the bag into a cubic shape.

(8) The packaging material roll of the present invention is a packaging material roll in which the packaging material described in (5) is integrated so as to be continuous in the direction in which the band-shaped sheet portion extends. It's wrapped.

(9) The method for manufacturing a packaging material of the present invention is a method for manufacturing a packaging material according to any one of (1) to (5), in which a sheet main body raw fabric capable of forming a plurality of sheet bodies is forming the opening piece by sequentially forming the incisions in each sheet main body section that is divided into the sheet main body material and can become the sheet main body while being transported in the transport direction, and the sheet main body section and a step of adhering a protective portion of the protective sheet to each of the protective sheets.

According to the present invention, it is possible to provide a packaging material that allows food to be eaten without the protective sheet blocking the cut before opening getting in the way.

It is a top view showing a packaging material concerning an embodiment. FIG. 2 is a perspective view of a packaging material according to an embodiment. FIG. 2 is an exploded perspective view of a packaging material according to an embodiment. FIG. 2 is a perspective view showing a state in which food is packaged with the packaging material of the embodiment. It is a perspective view showing the state where the packaging material of an embodiment is opened. It is a top view which shows another form of the protective sheet of embodiment. It is a perspective view showing an example of the packaging bag obtained by processing the packaging material concerning an embodiment. It is a perspective view showing a packaging material original fabric roll concerning an embodiment. FIG. 1 is a side view schematically showing a manufacturing line that implements a packaging material manufacturing method according to an embodiment. It is a top view which shows the packaging material of a modification. It is a perspective view of the state where the rice ball to be packaged is packaged with the packaging material of a modification.

Hereinafter, embodiments will be described with reference to the drawings.

(packaging material)
FIG. 1 is a front view of a packaging material 1 according to an embodiment seen from the outer surface 1b side, FIG. 2 is a perspective view of the packaging material 1, and FIG. 3 is an exploded perspective view of the packaging material 1. FIG. 4 is a perspective view showing the food 5 packaged with the packaging material 1, and FIG. 5 is a perspective view showing the packaging material 1 being unsealed.
For example, as shown in FIG. 4, the packaging material 1 wraps a rectangular parallelepiped-shaped food 5 as a packaged object by push-up packaging, which will be described later.

As shown in FIGS. 1 to 3, the packaging material 1 according to the embodiment includes a sheet body 10, which is the main body of the packaging material 1, an opening piece 20, and a protective sheet 30. In FIGS. 1 to 3, the length direction of the packaging material 1 and the sheet body 10 is indicated by L, and the width direction thereof is indicated by W. The length direction and width direction below refer to the directions indicated by L and W in FIGS. 1 to 3, respectively.

As shown in FIGS. 1 to 3, the sheet body 10 is a resin film formed into a rectangular shape having a longitudinal direction and a width direction. The sheet main body 10 has an inner surface 1a facing the object to be packaged, and an outer surface 1b opposite to the inner surface 1a. The sheet main body 10 has a size that can surround the entire surface of the object to be packaged.

A notch 11 is formed at a predetermined location in the center of the sheet body 10 in the width direction and closer to one end in the length direction (upper end in FIG. 1). The cut 11 is a slit that penetrates from the outer surface 1b to the inner surface 1a. The notches 11 are not open at the edges of the four sides of the sheet body 10. As shown in FIG. 1, the cut 11 is formed in a flat inverted U shape. The notch 11 includes a tip portion 11a extending in the width direction, and a pair of guide portions 11b extending from both sides of the tip portion 11a in the width direction to the other end in the length direction (lower side in FIG. 1).

The opening piece 20 is provided in a part of the sheet body 10 by forming the cut 11. The opening piece 20 is a portion of the sheet body 10 surrounded by the notch 11, and is a portion that allows a part of the sheet body 10 to be turned over toward the outer surface 1b. When the unsealing piece 20 is turned over toward the outer surface 1b, the sheet body 10 can be torn to the other end in the length direction starting from the guide portions 11b on both sides of the notch 11.

The protective sheet 30 is a rectangular film that is long in the width direction. A portion of the protective sheet 30 is adhered to the outer surface 1b of the sheet body 10. The opening piece 20 is turned over to the outer surface 1b side through the protective sheet 30.

The protective sheet 30 includes a protective section 31 and an unsealing section 32.
The protection part 31 is adhered to the outer surface 1b including the opening piece 20, and covers the cut 11. The protection part 31 is bonded to the entire area of the opening piece 20 and the surrounding area of the opening piece 20 with an adhesive. The entire area of the protective part 31 is adhered to the outer surface 1b, and the notch 11 is closed by the protective part 31. Therefore, the cut 11 is separated from the outside by the protection part 31. The unsealing portion 32 is a portion continuous to one end in the length direction of the protective portion 31, and is not bonded to the outer surface 1b. The opening portion 32 can be pinched with fingers and turned over toward the outer surface 1b.

In the protective sheet 30, when the unsealed portion 32 is strongly pulled toward the protective portion 31 side, the portion of the protective portion 31 closer to the unsealed portion 32 than the notch 11 is peeled off from the outer surface 1b. When the protective sheet 30 is continued to be pulled, the unsealing piece 20 follows the protective sheet 30 and is turned over, and then a cut 12 is generated on the extension line of each guide portion 11b of the cut 11 as shown in FIG. As a result, the sheet main body 10 is torn along the length direction, and the packaging material 1 is opened. That is, the sheet main body 10 is torn and cut via the opening piece 20. The action of opening will be explained in detail later.

Note that the protective portion 31 of the protective sheet 30 may not be adhered to the cut 11, as shown in FIG. The protective part 31 in this case has an adhesive part 31a that is adhered to the outer surface 1b around the cut 11, and a non-adhesive part 31b that is not adhered to the cut 11. The cut 11 is covered with a non-bonded portion 31b. Therefore, it is possible to prevent the adhesive of the protective portion 31 from penetrating into the inner surface 1a side through the cut 11.

As shown in FIGS. 1 to 3, a pair of cut tapes 40 extending in the length direction are arranged on the inner surface 1a of the sheet body 10. As shown in FIGS. The cut tape 40 is attached to the inner surface 1a of the sheet body 10 by ultrasonic sealing, heat sealing, adhesive coating, or the like. A pair of cut tapes 40 are arranged on both sides of the cut 11 in the width direction. In other words, the cut 11 is arranged inside the pair of cut tapes 40 in the width direction. Each cut tape 40 is close to each guide portion 11b at both ends of the cut 11.

As described above, when the sheet main body 10 is torn through the opening piece 20, cuts 12 are generated in the sheet main body 10 on the extension of each guide portion 11b of the cut 11, and these pair of cuts 12 develop to separate the sheet main body. 10 is torn apart. A pair of cut tapes 40 will be placed inside each cut 12. Therefore, even if the cut 12 develops along the cut tape 40 side on the inside, the cut 12 hits the cut tape 40 and progresses along the cut tape 40 without cutting further inward. Therefore, the pair of cuts 12 formed on both sides of each cut tape 40 are maintained without disappearing.
Note that the cut tape 40 may be arranged on the outer surface 1b of the sheet main body 10, or may be arranged on both the inner surface 1a and the outer surface 1b.

As shown in FIGS. 1 to 3, a pair of belt-shaped sheet portions 50 extending in the length direction are arranged on the inner surface 1a of the sheet body 10. As shown in FIGS. The band-shaped sheet portion 50 is attached to the inner surface 1a of the sheet body 10 by ultrasonic sealing, heat sealing, adhesive application, or the like. The band-shaped sheet portion 50 is approximately parallel to the cut tape 40. Each of the pair of band-shaped sheet portions 50 is disposed on the outside of the pair of cut tapes 40 in the width direction and at a predetermined distance from the cut tapes 40.
Note that the band-shaped sheet portion 50 may be arranged on the outer surface 1b of the sheet main body 10, or may be arranged on both the inner surface 1a and the outer surface 1b.

Each of the sheet body 10, the protective sheet 30, the cut tape 40, and the belt-like sheet portion 50 is made of a transparent or translucent film made of flexible synthetic resin. It is preferable that the resin film has thermal weldability in order to facilitate heat sealing. As the resin film, a single layer or multilayer synthetic resin film is used. In the case of a single layer, it is, for example, a synthetic resin film such as (PE), polypropylene (PP), or polyethylene terephthalate (PET). In the case of multiple layers, for example, a synthetic resin film such as polypropylene containing a PVDC (polyvinylidene chloride) coating that acts as a barrier layer to block moisture can be used. Specifically, OPP (biaxially oriented polypropylene), CPP ( Non-stretched polypropylene) and the like are preferably used.

The thicknesses of the resin films forming the sheet body 10, the protective sheet 30, the cut tape 40, and the belt-shaped sheet portion 50 may be the same. However, it is desirable that the protective sheet 30 be relatively thick in order to prevent the unsealing part 32, which is pinched with fingers when opening, from tearing. It is desirable that the sheet main body 10 has a thickness that allows the packaged state to be maintained, and a thickness that allows it to be easily torn when opened.

As shown in FIG. 4, for example, the packaging material 1 presses a rectangular parallelepiped food 5 as an object to be packaged onto the approximate center of the inner surface 1a, deforms the packaging material 1 along the external shape of the food 5, and wraps it. The food 5 is packaged by so-called push-up packaging. The packaging material 1 that has wrapped the food 5 is folded in on the back side of the food 5, which is not visible in FIG. 5, to seal the food 5 from the outside, and the packaged state is maintained by pasting tape or the like. The packaging material 1 in which the food 5 is packaged has its length direction substantially parallel to the length direction of the food 5, and a protective sheet 30 adhered to the outer surface 1b is arranged slightly toward the center of the front surface and toward one end. Ru.

The action when opening the packaging material 1 will be explained.
When the unsealing part 32 of the protective sheet 30 is turned over and the unsealing part 32 is pulled toward the protective part 31 side indicated by the arrow M shown in FIG. Peel it off. When the unsealing part 32 is subsequently pulled, the unsealing piece 20 adhered to and overlapping the protective part 31 is turned over to the outer surface 1b side following the protective part 31 and pulled to the M side. As a result, the sheet body 10 has cuts 12 on the extensions of the guide portions 11b on both sides in the width direction of the cuts 11, and a strip-shaped opening 13 extending in the length direction is formed between the pair of cuts 12 on both sides in the width direction. be done. The packaging material 1 is divided into left and right sides by the opening 13, and the food 5 can be eaten through the opening 13 while the food 5 is held in the hand. Alternatively, the food 5 can be taken out through the opening 13.
(packaging bag)

The packaging form of the packaging material 1 according to the embodiment is not limited to the push-up packaging shown in FIG. 4.
For example, as shown in FIG. 7, the packaging material 1 is pasted together at both ends in the width direction to form the back pasted part 14a, and at the same time, the opposite ends on the other end side in the length direction (lower end side in FIG. 7) By bonding the parts together to form the bottom seal part 14b, it is possible to obtain the packaging bag 14 which is folded into a so-called folded packaging with an opening 14c left. This packaging bag 14 includes a rectangular bag body 14d. The packaging bag 14 can contain and package a liquid, powder, granule, or other object to be packaged, for example. After accommodating the packaged items, the opening 14c is hermetically sealed.

In this way, when the packaging bag 14 is formed from the packaging material 1, a large number of the packaging bags 14 can be manufactured, and an arbitrary item to be packaged can be stored in the packaging bag 14 and sealed at the supply destination.

(Raw roll of packaging material)
A large number of the packaging materials 1 according to the embodiment can be continuously obtained from the packaging material raw roll 1R according to the embodiment shown in FIG.

The packaging material roll 1R according to the embodiment is a long packaging material material roll 1G in which a large number of packaging materials 1 are integrated so as to be continuous along the length direction, and is wound into a roll shape. be. By cutting the cutting boundary 1c provided on the packaging material raw roll 1R, a large number of packaging materials 1 can be sequentially obtained.

The packaging material raw material 1G is mainly composed of a long belt-shaped sheet body raw material 10G made of a resin film. The sheet body original fabric 10G is provided with cutting boundaries 1c that partition a large number of sheet body parts 10A, each of which forms the sheet body 10 one by one. Each of the sheet body parts 10A is provided with an opening piece 20 formed by a notch 11, and a protective sheet 30 that closes the notch 11 is adhered to the surface set to the outer surface 1b. In the protective sheet 30, the protective portion 31 is releasably adhered to the sheet main body original fabric 10G with an adhesive.

In the packaging material raw roll 1R, the protective sheet 30 disposed on the side of the sheet body raw material 10G that is set on the outer surface 1b of the packaging material 1 has an opening part 32 that is not adhered to the sheet body raw material 10G when rolled. A protection portion 31 which is arranged on the original side and is adhered to the sheet main body original fabric 10G is arranged on the roll unwinding side.

In addition, the respective original fabrics that will become the pair of cut tapes 40 and the pair of band-shaped sheet parts 50, that is, the original cut tape 40G and the original fabric of the band-shaped sheet part 50G, are respectively pasted on the side that is set as the inner surface 1a. ing. The packaging material roll 1R is wound into a roll so that the inner surface 1a to which the protective sheet 30 is attached is located on the outer peripheral surface side. Therefore, the cut tape original fabric 40G and the strip-shaped sheet portion original fabric 50G are arranged on the inner peripheral surface side.

The packaging material 1 can be obtained one by one by sequentially cutting the cutting boundaries 1c while unwinding the packaging material material 1G from the packaging material material roll 1R. In addition, when the packaging material material roll 1R is used for unwinding the packaging material material roll 1R, the protective sheet 30 is first unwound from the protection portion 31 that is adhered to the sheet body material material material 10G, and the unsealed portion 32 which is not adhered thereto. comes out later. Therefore, there is no fear that the unsealing portion 32 of the protective sheet 30 will be turned over, folded, or overlapped, and the work can be performed smoothly.

(Production method)
The packaging material raw roll 1R and the packaging material 1 are manufactured, for example, by a manufacturing line 60 shown in FIG. 9. An example of the manufacturing method of the present invention can be implemented using the manufacturing line 60.

In the production line 60 shown in FIG. 9, the sheet main body material roll 10R is unwound from the sheet main body material roll 10R in approximately the H direction and conveyed. On the outer surface side of the sheet body raw fabric 10G immediately after being unwound from the sheet body raw fabric roll 10R, the above-mentioned cut tape raw fabric 40G unwound from the cut tape raw fabric roll 40R and from the band-shaped sheet portion raw fabric roll 50R are placed. The unwound belt-shaped sheet portion original fabric 50G is overlapped at a predetermined location. Next, in the seal portion 51, the cut tape original fabric 40G and the band-shaped sheet portion original fabric 50G are pasted onto the sheet main body original fabric 10G. The seal portion 51 has a pasting means such as an ultrasonic seal or a heat seal, but an ultrasonic seal is preferable because wrinkles are less likely to occur in the pasted part and its surroundings.

Next, the incision forming section 52 forms the incisions 11 in the original sheet body 10G. The cut 11 is formed by punching out the original sheet body 10G with a cutter (not shown) having the shape of the cut 11. The cuts 11 are intermittently formed at predetermined locations in each region of the packaging material 1 that is divided into the original sheet body 10G by the cutting boundary 1c.

Next, the protective sheet 30 is adhered to the inner surface of the original sheet body 10G at the protective sheet pasting section 53. The protective sheets 30 are peeled off one by one from the protective sheet roll 30R pasted on a backing paper at regular intervals, and are intermittently applied to predetermined locations that close the cuts 11 in the sheet main body roll 10G. is glued to.

As described above, the cut tape original fabric 40G and the belt-like sheet portion original fabric 50G are pasted on the sheet main body original fabric 10G, and at the same time, a cut 11 is formed and a protective sheet 30 is adhered to the cut 11, as shown in FIG. The packaging material raw fabric 1G shown in the figure is manufactured, and the packaging material raw fabric 1G is further wound up to obtain a packaging material raw fabric roll 1R. Then, the packaging material 1G is unwound from the packaging material material roll 1R, and the sheet main body portion 10A is cut at the cutting boundary 1c, so that the packaging material 1 can be obtained one by one.

In the packaging material original fabric 1G according to the embodiment, a pair of strip-shaped sheet portion original fabrics 50G extending in the length direction are attached near both ends in the width direction. As a result, the pair of raw cut tapes 40G and the protective sheet 30 can prevent the thickness from becoming too thick at the center in the width direction, and the thickness in the width direction can be made uniform overall. As a result, when the original packaging material roll 1G is wound up to obtain the original packaging material roll 1R, it is possible to suppress the occurrence of twisting due to uneven thickness and poor winding.

Hereinafter, effects achieved by the embodiment will be explained.
The packaging material 1 according to the embodiment includes a sheet main body 10 that can surround an object to be packaged and has an inner surface 1a facing a food 5 as an object to be packaged and an outer surface 1b opposite to the inner surface 1a, and an end of the sheet main body 10. The protective sheet 30 includes an opening piece 20 that allows the sheet body 10 to be cut by forming a notch 11 that does not open at the edge in the sheet body 10, and a protective sheet 30 disposed on the outer surface 1b side. , a protective part 31 that is adhered to the outer surface 1b including the unsealing piece 20 and separates at least the notch 11 from the outside, and an unsealable part 32 that is not adhered to the outer surface 1b and is continuous with the protective part 31.

Thereby, by pulling the unsealing part 32 of the protective sheet 30, the sheet main body 10 can be torn from the unsealing piece 20 as a starting point, and the packaging material 1 can be opened. It does not remain on the 10th side. Therefore, the food 5 can be eaten without the protective sheet 30 blocking the cut 11 before opening getting in the way.

In the packaging material 1 according to the embodiment, the entire area of the protection part 31 is adhered to the outer surface 1b of the sheet body 10.

Thereby, the notch 11 is reliably closed by the protective portion 31, and entry of foreign matter through the notch 11 can be effectively prevented.

In the packaging material 1 of the embodiment, the protection part 31 may have an adhesive part 31a that is adhered to the outer surface 1b around the cut 11, and a non-adhesive part 31b that is not adhered to the cut 11.

This can prevent the adhesive that adheres the protective portion 31 to the outer surface 1b from penetrating into the inner surface 1a side through the cut 11.

In the packaging material 1 according to the embodiment, the cut tape 40 that extends in the cutting direction of the sheet body 10 that is cut through the opening piece 20 and that secures the cut 12 that occurs during cutting is attached to the inner surface 1a and the outer surface. It is preferable that it is arranged in at least one of 1b.

As a result, the cut 12 is reliably formed along the cut tape 40 without disappearing, and the width of the opening opening 13 formed between the pair of cuts 12 is ensured, so that the packaging material 1 can be securely and stably formed. and can be opened.

In the packaging material 1 according to the embodiment, at least one pair of belt-shaped sheet parts 50 extending substantially parallel to the extending direction of the cut tape 40 are arranged on both sides of the cut tape 40, and the inner surface 1a and the outer surface It is preferable that it is arranged in at least one of 1b.

Thereby, it is possible to suppress the occurrence of deviation in the overall thickness of the packaging material 1 in the width direction. For this reason, when the original fabric of the packaging material 1 (the above-mentioned original packaging material 1G) is wound up into a roll, it is possible to suppress poor winding due to uneven thickness.

The packaging bag 14 according to the embodiment includes a bag body 14d in which the sheet main body 10 of the packaging material 1 is formed into a bag shape, and an object to be packaged is accommodated inside the bag body 14d.

As a result, in addition to being able to package items by pushing up the packaging material 1 as it is, the packaging material 1 can be processed into a packaging bag 14, and the packaging bag 14 can be filled with a variety of materials such as liquid, powder, and granules. It is possible to accommodate and package objects of various shapes.

The packaging bag 14 according to the embodiment includes a configuration in which the sheet main body 10 is folded and the bag body 14d is formed into a cubic shape.

Thereby, the bag body 14d can be formed into various shapes depending on how the sheet body 10 is folded.

In the packaging material roll 1R according to the embodiment, a packaging material material 1G in which the packaging material 1 is integrated so as to be continuous in the direction in which the band-shaped sheet portion 50 extends is wound into a roll shape.

Thereby, a large number of packaging materials 1 can be cut out from the original packaging material 1G to easily manufacture the packaging materials 1. Further, by extending the belt-shaped sheet portion 50, the thickness in the width direction becomes uniform throughout, and it is possible to suppress winding defects due to uneven thickness.

In the method for manufacturing the packaging material 1 according to the embodiment, while conveying a sheet body raw fabric 10G that can form a plurality of sheet bodies 10 in a predetermined conveyance direction, the sheet body raw fabric 10G that can form a plurality of sheet bodies 10 is divided into sheet body raw fabrics 10G that can become the sheet bodies 10. The method includes a step of sequentially forming cuts 11 in each sheet body portion 10A to form an opening piece 20, and a step of adhering a protective portion 31 of a protective sheet 30 to each of the sheet body portions 10A.

Thereby, the packaging material 1 according to the embodiment can be suitably manufactured.

FIG. 10 shows a modification of the packaging material 1. The packaging material 1 of this modification has the same structure as the above embodiment, but differs from the above embodiment in that the size is different. Therefore, in the following description, the same constituent elements will be given the same reference numerals as those in the above embodiment, and their explanation will be omitted, and only the differences will be explained.

The packaging material 1 of the modified example shown in FIG. 10 has a rectangular shape like the packaging material 1 of the above embodiment, but the size of the sheet body 10 and the protective sheet 30 are smaller than the packaging material 1 of the above embodiment, and the notches are 11 is also small. Further, the ratio between the length direction and the width direction (aspect ratio) is also different, and the length direction is longer than the embodiment. Further, the interval between the pair of cut tapes 40 is also small.

As shown in FIG. 11, this modified packaging material 1 is preferably a rice ball 6 having a substantially circular planar shape as the packaged object. In this case, the packaging material 1 wraps the rice ball 6 by pushing up the rice ball 6 while pressing it against the approximate center of the inner surface 1a.

This packaging material 1 can also be opened by tearing the sheet body 10 by pinching the unsealing part 32 of the protective sheet 30 with fingers and pulling the protective sheet 30 in the unsealing direction, as shown in FIG.

The present invention is not limited to the above embodiments, and can be modified as appropriate.
For example, in order to prevent the opening portion 32 of the protective sheet 30 from turning over, a point seal may be applied to partially adhere the opening portion 32 to the sheet body 10.
Instead of a pair of cut tapes 40, one cut tape 40 may be extended in the center in the width direction.
The shape of the sheet body 10 is not limited to a rectangular shape, and may be, for example, circular, triangular, etc. depending on the shape of the object to be packaged.
The material of the sheet body 10 may be, in addition to a resin film, a paper material, a paper material whose inner surface is coated with a resin for water resistance, or the like.

1 Packaging material 1a Inner surface 1b Outer surface 1G Original packaging material 1R Original packaging material roll 5 Food (food to be packaged)
6 Onigiri (packaged food)
10 Sheet main body 10A Sheet main body part 10G Sheet main body original fabric 11 Cut 12 Cut 14 Packaging bag 14d Bag body 20 Opening piece 30 Protective sheet 31 Protective part 31a Adhesive part 31b Non-adhesive part 32 Opening part 40 Cut tape 50 Band-shaped sheet part

Claims (8)

a sheet main body capable of surrounding an object to be packaged and having an inner surface facing the object to be packaged and an outer surface opposite to the inner surface;
an opening piece that allows the sheet body to be cut by forming a notch in the sheet body that does not open at an edge of the sheet body;
a protective sheet disposed on the outer surface side;
When the sheet main body is folded to seal off the packaged item from the outside and package it, a tape separate from the protective sheet is attached to the sealed area to maintain the packaged state. Prepare,
The protective sheet includes a protective part that is adhered to the outer surface including the opening piece and separates at least the cut from the outside, and an unsealable part that is not adhered to the outer surface and is continuous with the protective part,
A cut tape that extends in the cutting direction of the sheet main body to be cut through the opening piece and secures a cut generated during cutting is disposed on at least one of the inner surface and the outer surface,
The cut tape is arranged in a pair on both sides of the cut, and is arranged inside the cut when the cut occurs,
In a packaging state in which the sheet main body surrounds an object to be packaged, the unsealing portion is substantially entirely opposed to the outer surface of the substantially flat portion of the sheet main body. Material. The packaging material according to claim 1, wherein the entire area of the protection part is adhered to the outer surface. The packaging material according to claim 1, wherein the protection part has an adhesive part that is adhered to the outer surface around the cut, and a non-adhesive part that is not adhered to the cut. At least one pair of belt-shaped sheet parts extending substantially parallel to the extending direction of the cut tape are arranged on both sides of the cut tape, and are arranged on at least one of the inner surface and the outer surface. , the packaging material according to any one of claims 1 to 3. A packaging bag, wherein the sheet body of the packaging material according to any one of claims 1 to 4 includes a bag body formed in a bag shape, and an object to be packaged is accommodated inside the bag body. The packaging bag according to claim 5, wherein the sheet body is folded to form the bag body into a cubic shape. A packaging material roll comprising a packaging material roll in which the packaging material according to claim 4 is integrated so as to be continuous in the extending direction of the belt-shaped sheet portion. A method for manufacturing the packaging material according to any one of claims 1 to 4, comprising:
While conveying the sheet body raw fabric that can form a plurality of sheet bodies in a predetermined conveyance direction, the incisions are sequentially made in each sheet body portion that is partitioned into the sheet body raw fabric and can become the sheet body. forming the opening piece;
A method for manufacturing a packaging material, comprising the step of adhering a protective portion of the protective sheet to each of the sheet main body portions.

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