JP2017030766A - Packaging material, manufacturing method and device of packaging material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packaging material which facilitates opening work and reduces a waste object at the time of opening, and a manufacturing method and a device of the packaging material.SOLUTION: In a packaging material, a manufacturing method and a device of the packaging material, a bag-like packaging material comprises inner and outer films storing a sheet-like member to be covered over a rice ball. When opening a rice ball package in which the rice ball is packaged by the packaging material, the rice ball can be covered with the sheet-like member by fragmenting the packaging material in a lateral direction and pulling and removing fragmented left and right packaging materials. The outer film forms two film pieces while joining them at an outer joint part, and the inner film forms two film pieces while joining them at an inner joint part. The outer joint part and the inner joint part are disposed in a direction orthogonal to the lateral direction and can be fragmented in the lateral direction.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a packaging material for packaging rice balls and sheet-like members to be covered with rice balls in a state where they are isolated from each other, a method for producing a packaging material containing sheet-like members such as seaweed and rice balls for packaging rice balls and rice balls, and the like. It relates to the device.

  Conventionally, a method for manufacturing a packaging material in which a sheet-like member for packaging rice balls or the like is accommodated is known. For example, a rice ball in which an outer film and two inner films whose inner ends overlap with each other on a line connecting both ends of the outer film are overlapped via a sheet-like member, and the outer film and the peripheral edge of the inner film are sealed. A pair of restricting members for preventing the outer film from being torn in a direction perpendicular to the line, from one end to the other end of the outer film, and between the pair of restricting members at both ends of the outer film. A notch is formed, a notch is provided at both ends of the inner end where the inner film overlaps, and the folded part with the outer film and inner film folded in half so that the inner film is joined to the rice ball And the outer peripheral edges of the inner film that are joined except for the notch are sealed and the inner film is joined by providing a notch in the inner film. Peripheral edge portions of the beam are known those which are sealed (see Patent Document 1).

  As a result, the outer film and the inner film sandwiching a sheet-like member such as seaweed are folded in two, and the three sides except the folded portion are sealed, so that the rice balls can be packaged with a margin. You can enjoy a soft and soft feeling.

Japanese Patent No. 3908185

  However, in the above structure, when eating rice balls, the outer film is divided into three parts with the regulating member as a boundary by picking the corners of the package and separating them in the separating direction. However, there is a concern that the number of objects to be discarded increases when an unnecessary film is divided.

  Moreover, if the sealing part of the upper end part in the outer film located in the said intermediate part is not peeled off, a rice ball cannot be eaten and there was a concern that opening operation may become complicated.

  Accordingly, the present invention solves such problems, and provides a packaging material, a packaging material manufacturing method, and an apparatus thereof for facilitating the opening operation and for reducing the amount of waste at the time of opening. Let it be an issue.

  In order to solve the above problems, the packaging material according to claim 1 of the present invention is a bag-shaped packaging material having an outer film and an inner film for accommodating a sheet-like member to be put on a rice ball, and the packaging When opening the rice ball package that wrapped the rice balls with the material, the sheet material was divided into the left and right directions, and the left and right packaging materials were pulled and removed to cover the rice balls. In the packaging material that can be put into a state, the outer film is formed by joining two film pieces at an outer joint portion, and the inner film is formed by joining two film pieces at an inner joint portion. The outer joint portion and the inner joint portion are arranged in a direction orthogonal to the left-right direction, and can be divided in the left-right direction.

  The packaging material according to claim 2 of the present invention is the packaging material according to claim 1, wherein at least one of the outer joint portion and the inner joint portion folds one end portion of one film piece. The overlapped portion is joined to one end of the other film piece.

  The packaging material according to claim 3 of the present invention is the packaging material according to claim 1 or 2, wherein the outer joint portion and the inner joint portion are spaced apart from each other in the left-right direction. Are arranged.

  Moreover, the packaging material of Claim 4 of this invention is a packaging material of any one of Claims 1-3, The said outer junction part and the said inner junction part are in said each film. It is disposed at a substantially central portion in the left-right direction.

  Moreover, the manufacturing method of the packaging material of Claim 5 of this invention is the width direction in both the film pieces which are conveyed in a longitudinal direction, polymerizing the elongate 1st film piece and 2nd film piece, and superposing | polymerizing. Forming the outer film and the inner film by joining one end of the film, and spreading the outer film and the inner film, and arranging the joint portion formed by the molding process at a substantially central portion in the width direction of the respective films. A widening step, a step of placing a sheet-like member between the spread outer film and the inner film at a predetermined interval, polymerizing both films, and the polymerized outer film and inner film in the width direction And a step of joining at the front part and the rear part of the sheet-like member, and a step of cutting the joined outer film and inner film in the width direction, respectively. It is intended to.

  Moreover, the manufacturing method of the packaging material of Claim 6 of this invention WHEREIN: The manufacturing method of the packaging material of Claim 5 WHEREIN: The said widening process WHEREIN: The open end part which opposes the said junction part is made into a guide part. And spread apart in a substantially horizontal state.

  Moreover, the manufacturing method of the packaging material of Claim 7 of this invention is a manufacturing method of the packaging material of Claim 5 or Claim 6, and supports the said outer film and inner film to be joined, and stands substantially upright. A supporting step of guiding the widening step in a state or substantially inclined state.

  Moreover, the manufacturing method of the packaging material of Claim 8 of this invention is a manufacturing method of the packaging material of any one of Claims 5-7 in the manufacturing method of the packaging material of any one of Claims 5-7. A pressing step of folding and pressing the joint portion on the first film piece side or the second film piece side is provided.

  In the packaging material manufacturing apparatus according to claim 9 of the present invention, a sheet-like member is disposed at a predetermined interval between an elongate outer film and an inner film which are opposed to each other and conveyed in the longitudinal direction. In the disposed state, both end portions in the width direction of the outer film and the inner film, a joining means for joining the front portion and the rear portion of the sheet-like member, and the joined outer film and inner film in the width direction, respectively. An apparatus for manufacturing a packaging material comprising a cutting means for cutting, and superposing a long first film piece and a second film piece that are opposed to each other and conveyed in the longitudinal direction, and in the width direction of both film pieces Forming means for forming the outer film and the inner film by joining one end part, and the open end parts facing the joined part of the outer film and the inner film to be joined are separated from each other via a guide part and spread. The It is characterized in further comprising a widening means for a state.

  Further, the packaging material manufacturing apparatus according to claim 10 of the present invention is the packaging material manufacturing apparatus according to claim 9, which supports the outer film and the inner film to be joined, and is substantially upright or substantially inclined. Supporting means for guiding the widening means in a state is provided.

  Moreover, the manufacturing apparatus of the packaging material of Claim 11 of this invention is a manufacturing apparatus of the packaging material of Claim 9 or Claim 10, The said 1st film one side of the said extended outer film and inner film Alternatively, pressing means for folding and pressing the joint portion on the second film piece side is provided.

  In the packaging material of the present invention, the rice ball can be taken out by tearing the outer joint portion and the inner joint portion simply by separating the packaging material in the left-right direction, so that the opening operation in the packaging material can be facilitated. Moreover, since it becomes only the outer film and inner film which were divided | segmented into the left-right direction and joined the front and back as a discard object, the discard object at the time of opening can be reduced.

  Moreover, in the packaging material manufacturing method and its apparatus, the outer film and the inner film in which the substantially central part in the width direction is joined by the outer joint part and the inner joint part are formed in the course of the transport process, so these joint parts are formed. The outer film and the roll in which the inner film is wound in advance are not necessary, and the cost can be reduced and the productivity can be improved.

It is a perspective view of the state which turned up the inner film side of the packaging material in the Example of this invention. It is an AA expanded sectional view of FIG. 1 of the packaging material in the Example of this invention. It is explanatory drawing at the time of opening the packaging material in the Example of this invention. It is a rear view of the rice ball package which shows the example of a specification of the connection member stuck on the packaging material in the Example of this invention. It is the schematic of the manufacturing process of the packaging material in the Example of this invention. It is the principal part schematic of the manufacturing process of the packaging material in the Example of this invention. It is a front view before the cutting process of the packaging material in the Example of this invention.

  Hereinafter, a packaging material according to an embodiment of the present invention will be described with reference to FIGS. Moreover, the manufacturing method and apparatus of a packaging material are demonstrated based on FIGS. 1 is a perspective view of the packaging material with the inner film side facing up, and FIG. 2 is an AA enlarged sectional view of FIG. FIG. 3 is an explanatory diagram when the packaging material is opened. FIG. 4 is a rear view of the rice ball package showing an example of the specification of the connection member attached to the packaging material. FIG. 5 is a schematic view of the manufacturing process of the packaging material. FIG. 6 is a schematic view of the main part of the manufacturing process. FIG. 7 is a front view before the packaging material cutting step.

  The packaging material which concerns on this invention is a bag-shaped thing which has the outer film 1 and the inner film 2 which accommodate the sheet-like member 3 covered on a rice ball, Comprising: When opening the rice ball package body which wrapped the rice ball with the packaging material The packaging material is divided in the left-right direction, and the left and right packaging materials are pulled and removed, whereby the rice ball can be covered with the sheet-like member 3. That is, the opening operation can be performed without using a number of conventional opening operations for packaging materials, so-called cut tape.

  The rice ball wrapped in the packaging material is a triangular shape consisting of a triangular surface and back surface, left and right inclined surfaces, and a bottom surface, but the size, type of rice, seasoning, etc. are particularly limited is not.

  In the present embodiment, the sheet-like member 3 uses laver for wrapping rice balls. For example, rice cakes, bonito or kelp formed in a sheet shape with gelatin are selectively used as appropriate. Is done. That is, it is not limited to sheet-like food.

  As shown in FIG. 1, the packaging material is composed of a vertically long outer film 1 having a substantially rectangular shape and an inner film 2 having the same shape. The outer film 1 is a transparent film made of a synthetic resin such as OPP (biaxially stretched polypropylene), and is formed by printing appropriate characters and patterns. The inner film 2 is preferably an OPP similar to the outer film 1 and is preferably a light peeling type so-called easy peel film. For example, the easy peel film is composed of a multilayer film of three or more layers made of polyolefin as a raw material, heat sealability is imparted to the exposed front and back layers, and printability and heat resistance are imparted to the intermediate layer. Can be used.

  The outer film 1 and the inner film 2 are each formed by partially joining two pieces of film at the outer joint portion 1c and the inner joint portion 2c. Is configured to be separable.

  As shown in FIG. 2, the joining portion is formed by joining a superposed portion obtained by folding back one end portion of one film piece to one end portion of the other film piece. More specifically, the outer film 1 is composed of a first outer film piece 1a and a second outer film piece 1b, and is formed by folding one end portion of the first outer film piece 1a from one end to the other end in the longitudinal direction. The part 1d is joined to one end part of the second outer film piece 1b to form an outer joint part 1c.

  Similarly, the inner film 2 is composed of a first inner film piece 2a and a second inner film piece 2b, and one end portion of the first inner film piece 2a is folded from one end to the other end in the longitudinal direction. The overlapping portion 2d is joined to one end portion of the second inner film piece 2b to form an inner joint portion 2c.

  That is, in order to balance the thickness of the packaging material, the positions of the film pieces that are folded back in the outer film 1 and the inner film 2 are different in the left-right direction. This makes it possible to use a film composed of two film pieces on the front and back surfaces without distinguishing between the outer film 1 and the inner film 2, which is extremely useful in terms of manufacturing such as inventory management. is there.

  Further, without being limited thereto, in the inner film 2, the overlapped film piece 2d is provided at one end portion of the second inner film piece 2b and joined to the first inner film piece 2a, so that the film piece on the side to be folded is left-right direction. Of course, they can be matched with each other. Furthermore, the outer joint 1c and the inner joint 2c may be formed by joining the ends of the two film pieces without providing a superposition part at each joint, Of course, it can be configured by appropriately combining, for example, a joint portion formed by overlapping one of the overlapping portions.

  These outer joint part 1c and inner joint part 2c are arranged in the substantially central part of the lateral direction (left-right direction) in each outer film 1 and inner film 2, and each may superpose | polymerize mutually. Good. Further, in order to reduce the thickness of the packaging material, the outer joint portion 1c and the inner joint portion 2c can be disposed in a state where they are separated from each other in the left-right direction. In such a case, it is more desirable that the outer joint portion 1c and the inner joint portion 2c be close to each other so as not to overlap each other. Thereby, when isolate | separating a junction part, the traction force from the left-right direction can be provided equally.

  The outer film 1 and the inner film 2 are joined to the edge portions 4 and 5 in the width direction of the outer film 1 and the inner film 2 to be polymerized by a known heat sealing device, and the front portion of the sheet-like member 3 and It joins by the adhesion part 6 extended in the width direction in a back part. Thereby, the accommodating part 7 which accommodates the sheet-like member 3 between the outer film 1 and the inner film 2 is formed, and it hold | maintains so that the sheet-like member 3 cannot move relatively.

  The outer film 1 and the inner film 2 joined in this way are partly cut by a cutting line so that both edge portions 4 and 5 have an appropriate shape by a known cutting device, and are cut out in the vicinity of the adhesive portion 6. Portions 4a and 5a are formed.

  In addition, it is desirable that the bonding portion 6 where the outer bonding portion 1c and the inner bonding portion 2c are provided is set to be weaker than the adhesive force of the other bonding portions 6 in order to make it easy to peel off. For example, it is possible to weaken the sticking force by applying a part coat or the like to a place where the outer joint portion 1c and the inner joint portion 2c are provided on the line of the bonding portion 6.

  Next, a process for packaging rice balls with a packaging material to complete a rice ball package will be described.

  First, the inner film 2 side of the packaging material in which the sheet-like member 3 is accommodated is placed on the front side so that the triangular surface side of the rice ball is in contact with the upper portion of the packaging material. Next, the lower part of the packaging material is lifted, bent near the bottom surface of the rice ball, and the packaging material is covered with the rice ball so that the back surface of the rice ball is in contact with the inner film 2. Then, both corners of the lower part of the packaging material are folded into the left and right inclined surfaces of the rice ball, and then both corners of the upper part of the packaging material are folded into the left and right inclined surfaces of the rice ball, respectively, and then a connecting member such as a label 9 is fixed, and the rice ball package as shown in FIG. 4 is completed.

  Further, in the connection member 9, in order to further facilitate the opening operation, cutting means such as a cut line and a perforation can be provided. For example, as shown to Fig.4 (a), in the approximate center part of the width direction (left-right direction) in the connection member 9, the cut line 10 extended from the upper end part to a lower end part can also be provided in the vertical direction. The cut line 10 is a half cut or the like, and a plurality of the cut lines 10 can be provided as shown in FIG. The cutting means is only required to be provided so as to easily cut the connection member 9 in accordance with the tearing of the outer joint portion 1c and the inner joint portion 2c, and at least from the lower end portion of the connection member 9 upward. What is necessary is just to form, and it is not restricted to what is provided until it reaches an upper end part.

  Next, a method for opening the rice ball package will be described.

  At the time of opening, as shown in FIG. 3, the side edge part 8 used as the corner | angular part of a rice ball package body is picked, and it pulls away in the direction (left-right direction) which the said side edge part 8 separates. Thereby, the outer film 1 is torn along the outer joint part 1c from the bottom side of the rice ball, and the inner joint part 2c located inside the sheet-like member 3 is torn later, so that the packaging material is divided in the left-right direction. Is done. And it will be in the state where the sheet-like member 3 covered the rice ball by pulling and removing each side edge part 8 of the divided packaging material in the right and left.

  As described above, according to the packaging material according to the present invention described above, it is possible to tear the outer joint portion 1c and the inner joint portion 2c and take out the rice balls simply by separating the side edge 8 of the packaging material. The opening operation can be facilitated. Moreover, since it becomes only the outer film 1 and the inner film 2 which were divided | segmented into the left-right direction and joined the front and back in the substantially U shape as a discard object, the discard object at the time of opening can be reduced.

  Next, a manufacturing method and a manufacturing apparatus for manufacturing the packaging material will be described with reference to FIGS. The packaging material manufacturing apparatus manufactures a packaging material that accommodates sheet-like members 3 such as seaweed and rice cakes for packaging rice balls, chimaki, etc. The front-rear direction or the longitudinal direction.

  As shown in FIGS. 5 and 6, the packaging material manufacturing apparatus places a predetermined interval between the sheet-like member 3 between the long outer film 1 and the inner film 2 that are opposed to each other and conveyed in the longitudinal direction. In a state where the outer film 1 and the inner film 2 are arranged apart from each other, both the widthwise ends of the outer film 1 and the inner film 2, the joining means for joining the front and rear parts of the sheet-like member 3, and the joined outer film 1 and inner film 2 Cutting means that respectively cuts in the width direction, and superposes the first and second film pieces that are opposed to each other and transported in the longitudinal direction, and in the width direction of both film pieces Forming means for forming the outer film 1 and the inner film 2 by joining one end portion, and the open end portions facing the joining portion of the outer film 1 and the inner film 2 to be joined are separated from each other via the guide portion and spread. Widening means to make the state Made in preparation for.

  As shown in FIG. 5, the manufacturing apparatus includes a first roll 11 and a second roll 12 on the lower side, and a first outer film piece 1 a is wound around the first roll 11 and a second roll. 12 is wound with the second outer film piece 1b. The first outer film piece 1 a and the second outer film piece 1 b constitute the outer film 1.

  A third roll 13 and a fourth roll 14 are installed on the upper side of the apparatus. The first inner film piece 2 a is wound around the third roll 13, and the second roll 14 has a second roll. The inner film piece 2b is wound. The first inner film piece 2 a and the second inner film piece 2 b constitute the inner film 2.

  In the manufacturing apparatus, since the outer film 1 and the inner film 2 are manufactured through the same process, only the manufacturing of the outer film 1 will be described below. The outer film 1 is formed by partially joining the first outer film piece 1a and the second outer film piece 1b by the sealing device 15 and can be separated by pulling the outer joint portion 1c. Configured as follows.

  More specifically, as shown in FIG. 5, the sealing device 15 includes heat rollers 15a and 15b. And the long 1st outer film piece 1a and the 2nd outer film piece 1b are guided and conveyed by the guide rollers 16, 17, and 18 in a state of being opposed to each other, and both film pieces are the heat rollers 15a and 15b. In the process of passing between, one end part in the width direction of both film pieces is joined as the outer joint part 1c. For example, as shown in FIG. 2, the outer joint portion 1 c is provided with an interval of about 3 mm from the edge in the width direction of both film pieces, and a portion of about 2 to 3 mm is joined in the direction of the other end. The said location is made into the junction location 1e. Thereby, the 1st outer film piece 1a and the 2nd outer film piece 1b are joined partially, and the outer film 1 is shape | molded. This step is a forming means.

  Next, the outer film 1 in which one end portion in the width direction is bonded as the outer bonding portion 1c is guided by the guide rollers 19 and 20 shown in FIG. 5 and conveyed forward. Then, the outer film 1 is shifted from the folded state to the unfolded state by the support means 21 and the guide portion 22, and the outer joint portion 1 c is disposed at a substantially central portion in the width direction of the outer film 1.

  More specifically, as shown in FIG. 6, the support means 21 includes support bars 21a and 21b. The support bars 21a and 21b support the outer film 1 with the outer joint portion 1c positioned upward in order to make the outer film 1 conveyed toward the guide portion 22 more easily spread. . And the outer film 1 is conveyed in the substantially upright state, sliding between these between the support rods 21a and 21b. This step is a support means. In this embodiment, it is supported by the two support bars 21a and 21b, but is not limited to this as long as the outer film 1 can be substantially upright. Three or more may be sufficient.

  And the outer film 1 conveyed in the substantially upright state is changed by the guide part 22 from the folded state to the expanded state. That is, the open end portions of the outer film 1 facing the outer joint portion 1c are separated from each other via the guide portion 22, and the outer film 1 is brought into a substantially horizontal state with the outer joint portion 1c serving as a substantially central portion. This step is a widening means.

  In the present embodiment, the guide portion 22 is formed in a substantially hemispherical shape, and the diameter thereof is set to be substantially equal to the dimension in the width direction of the expanded outer film 1. Thereby, the outer film 1 is conveyed while sliding on the outer peripheral surface of the guide portion 22, so that the open end portions can be separated from each other to be in a substantially horizontal state.

  Moreover, the guide part 22 is installed so that the substantially center part of the guide part 22 may be located under the said line on the line through which the outer side junction part 1c of the outer film 1 conveyed in a substantially upright state passes. Thereby, during conveyance, the outer film 1 can be spread evenly in a state where the outer joint portion 1c is supported from below.

  Next, the outer film 1 spread in a substantially horizontal state is guided to the pressing portion 23 and conveyed while the outer bonding portion 1c slides on the pressing portion 23, so that the outer bonding portion 1c becomes the first outer side. The film piece 1a side or the second outer film piece 1b side is folded back. At this time, the folded portion is folded, for example, at a portion of about 10 mm from the edge of the outer film 1. That is, it is folded back with a predetermined interval between the outer joint 1c and the folded portion. A pressing roller or the like can be used for the pressing portion 23. Then, the outer film 1 is guided by the guide rollers 24 and 25 and conveyed to the step of joining with the inner film 2.

  On the other hand, a feeder 26 is installed on the rear side of the apparatus, and the sheet-like member 3 formed in a predetermined shape is laminated. The sheet-like member 3 is intermittently supplied one by one by a supply device 26 and is conveyed by a conveyor 27 installed below the supply device 26.

  After that, the sheet-like member 3 is placed at a predetermined interval on the inner surface of the outer film 1 which is conveyed in a state where the outer joint portion 1c is located at a substantially central portion in the width direction. Then, the inner film 2 manufactured through the same steps as the outer film 1 is guided by the guide rollers 24 and 25 and is polymerized to the outer film 1 so as to cover the sheet-like member 3. At this time, the outer film 1 and the inner film 2 are conveyed so that the outer joint portion 1c and the inner joint portion 2c are located on the surface.

  Then, the outer film 1 and the inner film 2 are conveyed to the sealing device 29 in a polymerized state. As shown in FIG. 5, the sealing device 29 includes heat rollers 29a and 29b. That is, the long outer film 1 and the inner film 2 are joined in the process of passing between the heat rollers 29a and 29b in a state of being polymerized.

  More specifically, as shown in FIGS. 1 and 7, both end edges 4 and 5 in the width direction of the polymerized outer film 1 and inner film 2 are joined by the sealing device 29, and the sheet-like member 3 It joins by the adhesion part 6 extended in the width direction in the front part and back part. Thereby, the accommodating part 7 which accommodates the sheet-like member 3 between the outer film 1 and the inner film 2 is formed, and it hold | maintains so that the sheet-like member 3 cannot move relatively.

  Subsequently, the outer film 1 and the inner film 2 joined in this way are conveyed to the cutting device 30 and are partially cut by a cutting line so that both end edges 4 and 5 have an appropriate shape, and in the vicinity of the bonding portion 6. The notches 4a and 5a are formed in. The cutting device 30 includes a receiving roller 30b and a cutting means 30a having a cutting blade, and can adopt a known structure.

  Later, the outer film 1 and the inner film 2 are conveyed to the cutting device 31 and cut by a cutting line 32 that is substantially orthogonal to the longitudinal direction. More specifically, as shown in FIG. 5, the movable film 31a and the fixed blade 31b are provided, and the outer film 1 and the inner film are moved by intermittently moving the movable blade 31a up and down with respect to the fixed blade 32b. 2 is cut. The cutting device 31 is not limited to this and can adopt a known structure. Then, the cut and formed packaging material is conveyed by the conveyor 33.

  Thus, a packaging material is formed as shown in FIG. At the upper and lower end portions and the left and right end portions of the packaging material, the periphery of the sheet-like member 3 is joined, and the accommodating portion 7 is sealed. That is, moisture, foreign matter and the like do not enter the housing portion 7, and the sheet-like member 3 can be stored in a very good state without impairing the color and flavor of the sheet-like member 3.

  For example, in the packaging material in which the sheet-like member 3 is made of seaweed and the rice balls are packaged, the container 7 of the packaging material is sealed even in the case where the warm rice balls are packaged. Will not enter. As a result, the seaweed is not damp and the color, flavor, texture, etc. are not impaired. That is, laver can be preserved in a very good state.

  According to such a packaging material manufacturing method and apparatus therefor, the outer film 1 and the inner film 2 are formed in the course of the conveying step, with the substantially central portion in the width direction being joined by the outer joint portion 1c and the inner joint portion 2c. Therefore, a roll around which the outer film 1 and the inner film 2 having these joint portions are wound in advance is not necessary, and the cost can be reduced and the productivity can be improved.

  In addition, the outer film 1 and the inner film 2 formed during conveyance are used without being wound in a subsequent process, so that the outer joint 1c, the inner joint 2c, etc. are wrinkled. It does not occur and the aesthetics are not impaired.

  In the said Example, although the support means 21 supported the outer film 1 in the state which located the outer side junction part 1c upwards, it is not restricted to this. For example, as shown in FIG. 5, the inner film 2 may be supported in a substantially upright state in which the inner joint portion 2c is positioned below. In that case, the guide part 22 is installed so that it may be located above the line which the inner side junction part 2c passes in the state corresponding to this. That is, in the support means 21, it is the meaning which may support a junction part from any direction up and down.

  Furthermore, the support means 21 is intended to include not only the substantially upright state but also the one that supports the outer film 1 and the inner film 2 that are transported by polymerization of the respective film pieces in an inclined state. In that case, it is desirable that the guide portion 22 is in a substantially horizontal state while conveying the outer film 1 and the inner film 2 in a shape corresponding to this, and the shape of the guide portion 22 can be changed as appropriate, There is no particular limitation.

  In addition, the setting positions and dimensions of the respective joints and folding points in the outer film 1 and the inner film 2 can be changed as appropriate, and the film pieces can be separated by pulling the respective joints. That is, it should be set as such. In addition, the installation positions of the first roll 11, the second roll 12, the third roll 13, the fourth roll 14, etc., the shape of the support means 21, the guide part 22, and the pressing part 23, the dimensions, the material, etc. are changed as appropriate. Is possible. Furthermore, it is needless to say that a part of the configuration can be omitted or a part of the configuration can be extracted.

DESCRIPTION OF SYMBOLS 1 Outer film 1a 1st outer film 1b 2nd outer film 1c Outer junction part 1d Superposition | polymerization part 2 Inner film 2a First inner film piece 2b Second inner film piece 2c Inner junction part 2d Superposition part 3 Sheet-like member 4, 5 Edge Part 6 bonding part 7 accommodating part 8 side edge part 9 connecting member 10 cutting means 21 support member 22 guide part 23 pressing part

Claims (11)

A bag-shaped packaging material having an outer film and an inner film for accommodating a sheet-like member to be put on a rice ball, and when opening the rice ball packaging body in which the rice ball is wrapped with the packaging material, the packaging material is moved in the left-right direction. In the packaging material in which the sheet-like member is covered with the rice ball by pulling and removing the divided packaging materials on the left and right respectively,
The outer film is formed by joining two film pieces at the outer joint portion,
The inner film is formed by joining two pieces of film at the inner joint,
The packaging material, wherein the outer joint portion and the inner joint portion are arranged in a direction orthogonal to the left-right direction and can be divided in the left-right direction.   The packaging material according to claim 1, wherein at least one of the outer joint portion and the inner joint portion is formed by joining a superposed portion obtained by folding back one end portion of one film piece to one end portion of the other film piece.   The packaging material according to claim 1 or 2, wherein the outer joint portion and the inner joint portion are disposed in a state of being separated from each other in the left-right direction.   The packaging material according to any one of claims 1 to 3, wherein the outer joint portion and the inner joint portion are disposed at a substantially central portion in a left-right direction of each of the films. A molding process of forming the outer film and the inner film by transporting in the longitudinal direction while polymerizing the long first film piece and the second film piece, and joining one end portions in the width direction of the two film pieces to be polymerized. ,
Widening the outer film and the inner film, and a widening step of arranging the joint portion by the molding step at a substantially central portion in the width direction of the respective films,
Placing a sheet-like member between the spread outer film and the inner film at a predetermined interval, and polymerizing both films;
A joining step of joining the polymerized outer film and the inner film at both ends in the width direction, at the front part and the rear part of the sheet-like member,
Cutting the joined outer film and inner film respectively in the width direction;
A method for producing a packaging material, comprising:   The said widening process is a manufacturing method of the packaging material of Claim 5 which spreads apart the open end parts which oppose the said junction part in a substantially horizontal state via a guide part.   The manufacturing method of the packaging material of Claim 5 or Claim 6 provided with the support process which supports the said outer film and inner film to be joined, and guides to the said widening process in a substantially standing state or a substantially inclined state.   The packaging according to any one of claims 5 to 7, further comprising a pressing step of folding and pressing the joint portion on the first film piece side or the second film piece side of the spread outer film and inner film. A method of manufacturing the material. In a state where sheet-like members are arranged at a predetermined interval between the long outer film and the inner film which are opposed to each other and conveyed in the longitudinal direction, both end portions in the width direction of the outer film and the inner film, A packaging material manufacturing apparatus comprising: a joining means for joining the front part and the rear part of the sheet-like member; and a cutting means for cutting the joined outer film and inner film in the width direction, respectively.
The long first film piece and the second film piece, which are opposed to each other and conveyed in the longitudinal direction, are polymerized, and one end portion in the width direction of both film pieces is joined to form the outer film and the inner film. Molding means;
Widening means for making the open ends facing the joined portion of the outer film and the inner film to be joined apart from each other via a guide portion and widened;
An apparatus for manufacturing a packaging material, comprising:   The packaging material manufacturing apparatus according to claim 9, further comprising a supporting unit that supports the outer film and the inner film to be joined and guides the widening unit in a substantially standing state or a substantially inclined state. The manufacturing apparatus of the packaging material of Claim 9 or Claim 10 provided with the press means which folds and presses the said junction part on the said 1st film piece side or the said 2nd film piece side of the said extended outer film and inner film.

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