JP2012184007A - Packaging material and method for manufacturing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packaging material which can favorably be opened without disordering cutting lines at a time when the material is opened and is safe in terms of sanitary, and a method for manufacturing the material.SOLUTION: The packaging material 3 has cutting sheets 1 narrower than the packaging sheet stuck to at least either the obverse or the reverse of the packing sheet 2. The cutting sheet is applied with cutting easement processing to make it easy to cut in the longitudinal direction.

Description

  The present invention relates to a packaging material used when packaging an article and a method for manufacturing the same.

  Conventionally, when packaging goods, various packaging materials such as cuts for opening are used, and when selling nigiri rice and sushi at convenience stores, supermarkets, etc., the seaweed is caused by moisture generated from the rice part A packaging material is used in which both are separated and packaged so as not to be damp, and the dried seaweed is wrapped around the cooked rice portion during eating.

  As a method of opening the packaging material when eating nigiri rice or sushi, for example, a sheet (inner packaging sheet) that separates the rice portion and nori of the packaging material and a sheet (outer packaging sheet) that covers the nori are linear or A method has been proposed in which a strip-shaped cut portion is provided, the inner wrapping sheet and the outer wrapping sheet are simultaneously removed by cutting the cut portion, and the cooked rice portion and laver are taken out and eaten as a unit.

  As a method for forming such a cut portion, Patent Document 1 discloses a method of forming a half cut using ultrasonic waves. However, according to this forming method, only one half-cut cutting auxiliary part is formed at the center of the packaging material, so that when the packaging material is folded, the front and back cut parts are displaced or unsealed from the notch. If the crack does not propagate well to the cutting part, there is a problem that the packaging material cannot be opened along the cutting auxiliary part.

  On the other hand, in Patent Document 2, a plurality of half cuts are formed on the outer sheet so that the tear tears from the notches can be transmitted even if there is a shift between the positions of the half cuts on the inner and outer sheets and films. A packaging material is disclosed. However, even if a plurality of half cuts are formed, there is a problem that if the tear tears enter at an angle close to perpendicular to the half cuts or if they are opened vigorously, they cannot be opened well along the half cuts. .

  Moreover, the formation of a half cut by ultrasonic cutting is very time consuming and requires high accuracy. Furthermore, the packaging material using half-cut has a problem in terms of hygiene because it easily tears when a tensile force is applied to the packaging material during packaging, transporting, or display.

Japanese Patent No. 4264123 Japanese Patent No. 4467636

  The problem to be solved by the present invention is to solve the above-mentioned problems, and to be able to open well without disturbing the cutting line at the time of opening the packaging material, and also to provide a safe packaging material and its manufacture Is to provide a method.

  In order to solve the above-mentioned problem, the invention according to claim 1 is characterized in that a cutting sheet having a width smaller than that of the packaging sheet is bonded to at least one of the front surface and the back surface of the packaging sheet, and the cutting sheet is cut in the longitudinal direction. It is a packaging material characterized by being subjected to an easy-to-cut process that facilitates cutting.

  The invention according to claim 2 is a packaging material in which an inner packaging sheet and an outer packaging sheet are overlapped, and a peripheral part is bonded to enclose a sheet-like article, and at least the inner packaging sheet and the outer packaging sheet On one side, a cutting sheet having a narrower width than the packaging sheet is bonded to at least one of the front and back surfaces of the packaging sheet, and the cutting sheet is subjected to an easy-to-cut process that facilitates cutting in the longitudinal direction. Is a packaging material characterized by

  The invention according to claim 3 is the packaging material according to claim 1 or 2, wherein a cutting line for cutting the cutting sheet is prevented from protruding outside the cutting sheet at the left and right side edges of the cutting sheet. Therefore, the packaging material is provided with a protective process.

  The invention according to claim 4 is the packaging material according to claim 3, wherein the protective processing is that a protective tape is attached to the cutting sheet.

  According to a fifth aspect of the present invention, in the packaging material according to any one of the first to fourth aspects, at least one half-cut line or a sewing line is formed on the cutting sheet in the easy cutting process. It is a packaging material characterized by being.

  The invention according to claim 6 is the packaging material according to claim 5, wherein both ends of the half-cut line or the sewing line are half-cut or cut into a Y shape.

  The invention according to claim 7 is the packaging material according to any one of claims 1 to 4, wherein the easy cutting process is to use a directional sheet for the cutting sheet. .

  The invention according to claim 8 is the packaging material according to any one of claims 5 to 7, wherein the cutting sheet is shorter than the length of the packaging sheet to which the cutting sheet is bonded. It is.

  The invention according to claim 9 is the packaging material according to any one of claims 5 to 7, wherein a cut is formed in the vicinity of the end of the cutting sheet.

  The invention according to claim 10 is the method of manufacturing a packaging material according to any one of claims 1 to 9, wherein the cutting sheet is arranged and bonded at right angles to a direction in which the packaging sheet is conveyed. A method for producing a packaging material body.

  The invention according to claim 11 is the method for manufacturing a packaging material according to any one of claims 1 to 9, wherein the cutting sheet is arranged in parallel to a direction in which the packaging sheet is conveyed and bonded. It is the manufacturing method of the packaging material to make.

  The invention according to claim 12 is the method for manufacturing a packaging material according to claim 11, wherein at least two cutting sheets are arranged in parallel and bonded to the packaging sheet. It is a manufacturing method.

  The invention according to claim 13 is the method of manufacturing a packaging material according to any one of claims 2 to 9, wherein the inner packaging sheet and the outer packaging sheet are overlapped and at least a part of the peripheral edge is adhered. Is a method for producing a packaging material, comprising: bonding a cutting sheet to a packaging sheet; continuously bending the packaging sheet at substantially the center of the packaging sheet; and laminating the inner packaging sheet and the outer packaging sheet. is there.

  According to the first aspect of the present invention, a cutting sheet having a width smaller than that of the packaging sheet is bonded to at least one of the front and back surfaces of the packaging sheet, and the cutting sheet is easily cut in the longitudinal direction. Since easy processing is performed, the packaging material can be easily opened. In addition, since the packaging sheet is not subjected to processing that facilitates cutting such as half-cutting, no sanitary problems such as tearing of the packaging sheet due to packaging operations or the like occur.

  According to the second aspect of the present invention, in a packaging material in which an inner packaging sheet and an outer packaging sheet are overlapped and a peripheral part is adhered to enclose a sheet-like article, at least one of the inner packaging sheet and the outer packaging sheet The cutting sheet having a narrower width than the packaging sheet is adhered to at least one of the front and back surfaces of the packaging sheet, and the cutting sheet has been subjected to easy cutting processing that makes it easy to cut in the longitudinal direction. Even in a packaging material in which a sheet-like article such as laver is encapsulated, it can be easily opened. In addition, since the packaging sheet is not subjected to a process that facilitates cutting such as half-cutting, the inner packaging sheet or the outer packaging sheet is not torn by a packaging operation or the like, and a sanitary problem does not occur.

  According to the invention of claim 3, since the left and right side edges of the cutting sheet are subjected to protective processing for preventing the cutting line when cutting the cutting sheet from protruding outside the cutting sheet, the packaging material The packaging material can be satisfactorily opened without the cutting line that occurs when the is opened out of the cutting sheet.

  According to the fourth aspect of the present invention, since the protective tape is attached to the left and right side edges of the cutting sheet as a protective process, it is possible to further reduce the risk that the cutting line protrudes outside the cutting sheet.

  According to the invention of claim 5, since at least one or more half cut lines or sewing lines are formed on the cutting sheet as an easy cutting process, the cutting sheet can be cut smoothly in the longitudinal direction. .

  According to the invention of claim 6, since both ends of the half cut line or the sewing line formed on the cutting sheet are half cut or cut into a Y shape, the opening tear when the packaging material is opened is smoothly cut. The sheet can be guided to an easily cut portion (half-cut line or sewing line) of the sheet.

  According to the invention of claim 7, since the directional sheet is used for the cutting sheet as an easy cutting process, it is possible to easily cut the cutting sheet in the longitudinal direction without performing a process such as a half cut. Become.

  According to the invention according to claim 8, since the length of the cutting sheet is shorter than the length of the packaging sheet to which the cutting sheet is adhered, the packaging sheet and the cutting sheet are attached when the periphery of the packaging sheet is adhered and the article is packaged. It is possible to suppress the occurrence of problems such as being overlapped at the bonding portion and difficult to cut.

  According to the ninth aspect of the present invention, since the cut is formed in the vicinity of the end of the cutting sheet, it can be easily cut when the packaging material is opened.

  According to the invention of claim 10, since the packaging material is manufactured by arranging and bonding the cutting sheet at right angles to the direction in which the packaging sheet is conveyed, the cutting sheet can be used even when the packaging material is rolled up. Can be uniformly wound up without being biased to a specific position, and has high stability during storage and transportation.

  According to the invention of claim 11, since the packaging material is manufactured by arranging and bonding the cutting sheet in parallel with the direction in which the packaging sheet is conveyed, both the cutting sheet and the packaging sheet are conveyed continuously. Can be bonded, and the packaging material can be produced efficiently.

  According to the invention of claim 12, since the packaging material is manufactured by arranging and bonding at least two cutting sheets in parallel to the packaging sheet, only one cutting sheet is provided for the packaging sheet. Compared with the case of arranging in parallel and adhering, the situation where only the cutting sheet portion rises and becomes unstable when the packaging material is wound is avoided, and the stability during storage and transportation is high.

  According to the invention of claim 13, in the step of manufacturing the packaging material, the step of superposing the inner packaging sheet and the outer packaging sheet and bonding at least a part of the peripheral edge is performed after bonding the cutting sheet to the packaging sheet. Since it is done by folding the packaging sheet continuously at the approximate center and overlaying the inner packaging sheet and the outer packaging sheet, there is no need to store the packaging material, and it is continuous from the packaging sheet and cutting sheet according to demand. And packaging material can be produced.

In the packaging material which concerns on this invention, it is a figure explaining the case where one sheet of packaging sheets is used. In the packaging material which concerns on this invention, it is a figure explaining the case where an inner side packaging sheet and an outer side packaging sheet are used. It is explanatory drawing of the cutting sheet used for this invention. It is a figure explaining the example which provided the Y-shaped half cut etc. in the cutting sheet used for this invention. It is a figure explaining the example which provided the protective tape in the cutting sheet used for this invention. It is a figure explaining the example which provided the cutting in the packaging material which concerns on this invention. In the packaging material which concerns on this invention, it is a figure explaining the case where the length of one packaging sheet is made shorter than the other. In the packaging material which concerns on this invention, it is a figure explaining the case where the length of a cutting sheet is made shorter than a packaging sheet. It is a figure explaining the example which packaged nigiri rice using the packaging material using one packaging sheet based on this invention. It is a figure explaining the example which wrapped the noodles using the packaging material formed by superposing the inner side packaging sheet and the outer side packaging sheet, and enclosing a sheet-like article concerning the present invention. In the manufacturing method of the packaging material which concerns on this invention, it is a figure explaining the 1st example which arrange | positions a cutting sheet at right angle with respect to the conveyance direction of a packaging sheet. In the manufacturing method of the packaging material which concerns on this invention, it is a figure explaining the 2nd example which arrange | positions a cutting sheet at right angle with respect to the conveyance method of a packaging sheet. In the manufacturing method of the packaging material which concerns on this invention, it is a figure explaining the example which arrange | positions a cutting sheet in parallel with respect to the conveyance direction of a packaging sheet. In the manufacturing method of the packaging material which concerns on this invention, it is a figure explaining the example which arrange | positions two cutting sheets in parallel with respect to the conveyance direction of a packaging sheet. The figure explaining the heat sealing | fusion part formed in the shape of the part which touches a packaging sheet of the heater used when heat-sealing a packaging sheet and a cutting sheet in the manufacturing method of the packaging material which concerns on this invention, and a cutting sheet It is. The figure explaining a mode that a sheet-like article is enclosed between an inner side packaging sheet and an outer side packaging sheet in a manufacturing method of a packaging material by which a cutting sheet is arranged in parallel to a conveyance direction of a packaging sheet concerning the present invention. It is. The figure explaining a mode that a sheet-like article is enclosed between an inner side packaging sheet and an outer side packaging sheet in a manufacturing method of a packaging material by which a cutting sheet is arranged at right angles to a conveyance direction of a packaging sheet concerning the present invention. It is. In the manufacturing method of the packaging material which concerns on this invention, while bonding a cutting sheet to an inner side packaging sheet and an outer side packaging sheet, it is a figure explaining a mode that a sheet-like article is enclosed between two packaging sheets continuously. . In the manufacturing method of the packaging material which concerns on this invention, while bonding a cutting sheet to a packaging sheet, the said folding sheet is bent continuously, and the process of forming the superimposition of an inner side packaging sheet and an outer side packaging sheet is demonstrated. It is.

The packaging material and manufacturing method thereof according to the present invention will be described in detail below.
FIG. 1 is a diagram for explaining an example in the case of using one packaging sheet for the packaging material of the present invention. FIG. 1 (a) shows a case where the cutting sheet 1 is bonded as a packaging material 3 to the approximate center of the packaging sheet 2 in parallel with the longitudinal direction of the packaging sheet 2. The cutting sheet 1 is bonded to at least one of the front surface (the surface that comes into contact with the outside air when the article is packaged) and the back surface (the surface that comes into contact with the article when the article is packaged).

  As will be described later, the cutting sheet 1 is easily cut in the longitudinal direction. As shown in Patent Document 1 or 2, the packaging material 3 is used for packaging articles such as nigiri rice. After packaging, the periphery of the packaging material is sealed by heat fusion or the like. When opening the packaging material, the cutting sheet 1 is cut along the longitudinal direction, so that the packaging sheet 2 itself can be packaged in accordance with the cutting of the cutting sheet, even if the cutting is not applied to the cutting sheet. The sheet 2 can also be cut and opened. In addition, as will be described later, if a cutting sheet whose left and right side edges are protected is used, it is possible to prevent a problem that the cutting line protrudes outside the cutting sheet.

  The cutting sheet 1 may be adhered to either the front or back of the packaging sheet 2 or may be adhered to both sides. The position where the cutting sheet 1 is adhered to the packaging sheet 2 may be adhered to the center as shown in FIG. 1A or the position shifted from the center as shown in FIG. Can do. Furthermore, as shown in FIG. 1 (c), it is possible to bond the packaging sheet 2 in an angled direction with respect to the longitudinal direction. In addition, as shown in FIG. 1D, a plurality of cutting sheets 1 can be bonded to a single packaging sheet according to the type and application of the article to be packaged.

  FIG. 2 shows a packaging in which the inner packaging sheet 2b (a sheet that comes into contact with the article when the article is packaged) and the outer packaging sheet 2a (a sheet that comes into contact with the outside air when the article is packaged) are stacked in the packaging material of the present invention. The material is shown. FIG. 2B is a cross-sectional view taken along arrow A-A ′ in FIG.

  Cutting sheets 1a and 1b are provided on each of the inner packaging sheet 2b and the outer packaging sheet 2a. The cutting sheet may be provided on only one of the inner packaging sheet and the outer packaging sheet, or when the two packaging sheets are overlapped, the cutting sheet may be disposed on either the inner side or the outer side.

  Between the inner packaging sheet 2b and the outer packaging sheet 2a, a sheet-like article 4 such as seaweed is enclosed, and the peripheral edge of the packaging sheet is bonded to the position indicated by the dotted line B by heat fusion or the like.

  Even when the two packaging sheets 2a and 2b are bonded to form the packaging material 5, as with the single packaging sheet 3 in FIG. Sealed by fusion or the like. When cutting the packaging material, the cutting sheets 1a and 1b can be easily cut by pulling the packing sheets 2a and 2b to both sides with the cutting sheet as a boundary, and the packaging sheet is similarly cut accordingly. Since the two packaging sheets 2a and 2b are cut together, the packaged article can be taken out in a state where the sheet-like article 4 is wound around the article such as hand-grip rice.

  As the packaging sheet, an OPP film (biaxially stretched polypropylene film) capable of heat fusion can be suitably used. Further, when packaging an article containing moisture such as nigiri rice, an OPP mat film having fine protrusions formed by embossing or the like can be used to prevent the article and the inner packaging sheet 2b from sticking to each other.

  Next, the cutting sheet used for the packaging material of the present invention will be described. FIG. 3 shows an example of a cutting sheet used in the present invention. The cutting sheet 1 is processed so as to be easily cut in the longitudinal direction. For example, as shown in FIG. 3A, a half-cut line 6 is formed substantially in the center of the cutting sheet 1 in parallel with the longitudinal direction. It is. For the half cut, die cut, laser cut, ultrasonic cut, etc. can be used.

  A plurality of half-cut lines 6 can be formed as shown in FIG. 3B, or can be formed at an angle with the longitudinal direction of the cutting sheet 1 as shown in FIG. 3C. Moreover, as an easy cutting process, as shown in FIG. Furthermore, as shown in FIG. 3E, a directional sheet that can be easily split in one direction (arrow C) can be used as the cutting sheet. When a directional sheet is used as a cutting sheet, it is not necessary to perform a process such as half cutting on the cutting sheet, and the manufacturing process can be shortened.

  The cutting sheet and the packaging sheet can be bonded together by heat fusion or the like, and the entire cutting sheet can be bonded to the packaging sheet. It is preferable that the cutting sheet is easily cut along the half-cut line without bonding or by reducing the bonding portion.

  The packaging material of the present invention is not subjected to the easy cutting process on the packaging sheet as in Patent Document 1 or 2, and only the cutting sheet is subjected to the easy cutting process, so that a crack occurs in the half cut line or the like during the packaging operation. Even in such a case, since the packaging sheet is not cracked, the article can be packaged hygienically and safely.

  As shown in FIG. 4, the cutting sheet is opened when the packaging material is opened by inserting a Y-shaped half cut or cut as shown by reference numeral 8 into at least one end of the half cut line 6 or the sewing machine line. The crack can be satisfactorily connected to an easily cut portion (half-cut line 6 or the like) of the cutting sheet 1 and can be easily cut and opened.

  In addition, the cutting sheet is protected on the left and right side edges of the sheet, thereby preventing a problem that a cutting line when the cutting sheet is cut out protrudes from the cutting sheet. For example, as shown in FIG. 5, a protective tape 9 is attached to the left and right edges of the cutting sheet 1, or the right and left edges of the cutting sheet are closely adhered to the packaging sheet to mechanically cut the sheet. There are methods for increasing the strength.

  As for the packaging material, as shown in FIG. 6, an incision 10 can be made in the vicinity of the end portion of the cutting sheet 1 so that the packaging material can be easily cleaved. The cut 10 can be formed not only in the cutting sheet 1 but also in a part integrated with the packaging sheet 2. It is also possible to fold the packaging sheet along a straight line perpendicular to the longitudinal direction of the cutting sheet and form a cut in the folded portion.

  As shown in FIG. 7, when a packaging material is manufactured using two packaging sheets, the inner packaging sheet 2b and the outer packaging sheet 2a can be set to have different sizes. In this case, the thickness of the peripheral portion of the packaging material 5 composed of the inner packaging sheet 2b and the outer packaging sheet 2a is the thickness of one packaging sheet (outer packaging sheet 2a). For this reason, when an article is packaged by the packaging material 5 and the peripheral portion is bonded, it is possible to prevent problems such as poor adhesion that occur because many sheets overlap and the thickness increases. It goes without saying that which of the inner packaging sheet 2a and the outer packaging sheet 2b is enlarged, how much the difference is made, and the like can be arbitrarily selected.

  FIG. 8 shows an example in which the length of the cutting sheet 1 is shorter than the size of the packaging sheet 2a to which the cutting sheet is attached. By making the length of the cutting sheet 1 shorter than the length of the outer packaging sheet 2a to which the cutting sheet 1 is affixed, the thickness depends on the thickness when the peripheral edge of the packaging material 5 is heat-sealed as in FIG. It is possible to prevent problems from occurring.

  In addition, when the cutting sheet 1 is bonded, the cutting sheet is difficult to tear, so that the function of easy cutting may not be exhibited. However, by shortening the length of the cutting sheet 1, such problems can be avoided. can do. The length of the cutting sheet 1 suffices if the cutting sheet 1 does not cover the bonding portion when the peripheral edge of the packaging material 5 is bonded, but the inner packaging sheet 2b and the outer packaging sheet 2a are overlapped, In the case of forming the packaging material 5 formed by enclosing the sheet-like article 4 by adhering the peripheral edge portion, it is preferable to make the length longer than the length of the sheet-like article 4.

  FIG. 9 shows an example in which nigiri rice is packaged using a packaging material using a single packaging sheet. FIG. 9 (a) shows a packaging material 3 using a single packaging sheet, packaging rice noodles 12, and bonding the peripheral edge 11 of the packaging material by heat fusion or the like, and cutting it near the center of the end of the packaging material. 10 is formed and the state where the nigiri rice is enclosed is shown. At this time, by forming the incision so as to reach not only the packaging sheet but also the cutting sheet, it is possible to surely generate a tear in the cutting sheet and open the packaging material more easily. Further, by making the length of the cutting sheet shorter than the length of the packaging sheet, it is possible to avoid the unnecessary thickness from being generated due to the cutting sheet and the peripheral edge 11 of the packaging material overlapping.

  FIG. 9B shows a state when the packaging material shown in FIG. 9A is opened. Since the notch 10 is formed in the overlapping part of the packaging sheet and the cutting sheet, the packaging sheet 3 and the cutting sheet can be removed by pulling or twisting the packaging material 3 left and right around the position where the notch 10 is formed. Then, it can be easily torn from the position of the notch 10. Since the cutting sheet bonded to the packaging material 3 is subjected to easy cutting processing, the packaging material can be easily torn along the cutting sheet by pulling the packaging material 3 to the left and right. The tasty rice 12 can be exposed. By performing protection processing on the left and right side edges of the cutting sheet, the cutting line does not protrude outside the cutting sheet, and can be reliably cut along the cutting sheet. Furthermore, when the cut 10 is formed at the end of the cutting sheet or near the end, it can be easily opened by tearing the packaging material 3 from the cut. Further, since the packaging sheet itself is not subjected to processing such as half-cutting, sanitary problems such as tearing of the packaging sheet during packaging operation and transportation do not occur.

  FIG. 10 shows an example in which nigiri rice is packaged using a packaging material 5 in which a sheet-like article 4 such as laver is enclosed between an inner packaging sheet and an outer packaging sheet. FIG. 10 (a) uses the inner packaging sheet and the outer packaging sheet to enclose the seaweed 4 and wraps the noodles 12 with the packaging material 5 formed with a notch 10 near the center of the end of the packaging material. A state is shown in which the peripheral portion 11 of the packaging material is adhered by thermal fusion or the like and the gripping rice is enclosed. At this time, by forming the incision so as to reach not only the packaging sheet but also the cutting sheet, it is possible to surely generate a tear in the cutting sheet and open the packaging material more easily. Further, by making the length of the cutting sheet shorter than the length of the packaging sheet, it is possible to avoid the unnecessary thickness from being generated due to the cutting sheet and the peripheral edge 11 of the packaging material overlapping.

  FIG.10 (b) has shown the mode at the time of opening the packaging material shown to Fig.10 (a). Since the notch 10 is formed in the overlapping part of the packaging sheet and the cutting sheet, the packaging sheet 3 and the cutting sheet can be removed by pulling or twisting the packaging material 3 left and right around the position where the notch 10 is formed. It becomes possible to tear easily from the position of the notch 10. Since the cutting sheet bonded to the packaging material 5 is subjected to easy cutting processing, the packaging material can be easily torn along the cutting sheet by pulling the packaging material 5 to the left and right. The tasty rice 12 can be exposed. By performing protection processing on the left and right side edges of the cutting sheet, the cutting line does not protrude outside the cutting sheet, and can be reliably cut along the cutting sheet. Furthermore, when the cut 10 is formed at the end of the cutting sheet or in the vicinity of the end, it can be easily opened by tearing the packaging material 5 from the cut. Further, since the packaging sheet itself is not subjected to processing such as half-cutting, sanitary problems such as tearing of the packaging sheet during packaging operation and transportation do not occur.

  Next, the manufacturing method of the packaging material of this invention is demonstrated based on drawing. FIG. 11 shows a first embodiment in the case where the cutting sheet 1 is arranged and bonded at a right angle to the direction in which the packaging sheet 2 is conveyed (arrow D direction). In this case, since the direction in which the packaging material is opened is perpendicular to the arrow direction, the article to be packaged is arranged perpendicular to the arrow direction. Naturally, the angle of the cutting sheet 1 does not have to be strictly perpendicular to the conveying direction.

  As shown in FIG. 11, by arranging the cutting sheet 1 with respect to the packaging sheet 2, even when the packaging material is rolled up, the cutting sheet is not biased to a specific position and can be wound evenly. , Stability during storage and transportation can be increased.

  FIG. 12 shows a second embodiment in which the cutting sheet 1 is arranged and bonded at right angles to the direction in which the packaging sheet 2 is conveyed. In the first embodiment, a tape-shaped cutting sheet is used, but in this embodiment, a roll-shaped cutting sheet is used. In FIG. 12, a roll-shaped cutting sheet is used while being cut in the direction of the rotation axis of the roll. Thus, since the cutting sheet can be produced in a large amount when the cutting sheet is formed in a roll shape, the packaging material can be produced more efficiently by this embodiment.

  In FIG. 12, when the cutting sheet is bonded to the packaging sheet, the cutting sheet is cut at the portion indicated by the broken line E, but it is also possible to cut the sheet after bonding the cutting sheet, If there is a concern about cutting, the cutting sheet may be cut before adhering to the packaging sheet.

  FIG. 13 shows an example in which the cutting sheet 1 is arranged and bonded in parallel with the conveyance direction (arrow D direction) of the packaging sheet 2. In this case, the packaging sheet 2 and the cutting sheet 1 can be stuck together, and the packaging material can be manufactured efficiently. Moreover, it can also move to the process of packaging the articles | goods for packaging continuously, manufacturing a packaging material. When the packaging material is wound up in a roll shape, the positions of the cutting sheets are overlapped, and a part of the roll shape rises locally, and there is a risk of lacking stability such as storage.

  As shown in FIG. 14, it is also possible to arrange at least two cutting sheets 1 in parallel with the packaging sheet 2 and bond them to form a packaging material. In such a case, the stability can be increased during storage even if the product is wound into a roll. As will be described later, this roll is formed by attaching the cutting sheet 1 to the packaging sheet 2 and then continuously bending it at the approximate center of the packaging sheet to form a packaging material by superposing the inner packaging sheet and the outer packaging sheet. it can.

  In the case of FIGS. 11 to 14, when the cutting sheet and the packaging sheet are bonded, it is possible to use an adhesive or the like, but the adhesive may melt and cause a sanitary problem. In many cases, a method of bonding by heat fusion using a heater is employed. When heat-sealing using a heater, it is preferable that the portion of the cutting sheet that has been subjected to easy cutting processing is not heat-sealed with the packaging sheet or the strength of fusion is weakened.

  FIG. 15 is a diagram illustrating the shape of the portion of the heater 15 that is in contact with the cutting sheet, and the state of heat-sealing of the cutting sheet that is heat-sealed to the packaging sheet by the heater 15. FIG. 15A shows the heater 15 so that the left and right side edges of the cutting sheet 1 are strongly bonded to the packaging sheet, and the central portion of the cutting sheet on which the easy cutting process 6 is applied is weakly bonded to the packaging sheet. It is an example at the time of forming the dent of the center part of the heater slightly indented from the right and left both side edges of the heater. In this case, the cutting sheet 1 and the packaging sheet are firmly bonded to each other by the strong heat-sealing portion 13, and the central portion of the cutting sheet that has been subjected to the easy cutting process 6 is weak to the packaging sheet by the weak heat-sealing portion 14. Since it is bonded, the easy cutting function of the easy cutting process 6 is not impaired by strong heat fusion.

  FIG. 15 (b) shows that when a plurality of easy cutting processes 6 such as half cuts are applied to the cutting sheet, the parts that are not subjected to the easy cutting processes 6 are strongly bonded to each other. This is an example in which a groove-like process is applied to the heater so as not to bond the portions that are present. In this case, since the strong heat-sealing part 13 is formed avoiding the easy cutting process 6, the cutting sheet 1 and the packaging sheet can be firmly bonded without impairing the easy cutting function of the easy cutting process 6. it can. In addition, by increasing the width of the left and right side edges of the heater 15 and by narrowing the width of the inner side protrusions, the heat-sealed part of both side edges functions as a protective process, and the inner heat-sealed part. The portion does not impair the easy cutting function. Further, the type of heater is not limited to the type described in FIG. 15. For example, in the case of FIG. 15B, the portion that has not been subjected to the easy cutting process is strongly bonded to perform the easy cutting process. It is also possible to configure the portion that is attached to be as weak as the weak heat-sealed portion 14 in FIG.

  FIG. 16 shows a first embodiment in the case of forming a packaging material by superposing the inner packaging sheet 2b and the outer packaging sheet 2a. In FIG. 16, the packaging sheet (packaging material) shown in FIG. 13 is temporarily wound into a roll shape. Two roll-shaped packaging sheets (packaging materials) are sequentially drawn out, and the sheet-like article 4 to be packaged is placed between the inner packaging sheet 2b and the outer packaging sheet 2a, and the peripheral edge is adhered and sealed. ing.

  FIG. 17 shows a second embodiment in the case of forming a packaging material by superposing the inner packaging sheet 2b and the outer packaging sheet 2a. In this embodiment, the packaging sheet shown in FIG. 11 or 12 is used. Two roll-shaped packaging sheets (packaging materials) are sequentially pulled out, and a sheet-shaped article to be packaged is disposed between the inner packaging sheet 2b and the outer packaging sheet 2a, and the peripheral edge is adhered and sealed. Yes.

  FIG. 18 shows a packaging material in which, after the step of bonding the cutting sheets 1a and 1b to the packaging sheets 2a and 2b, the inner packaging sheet 2b and the outer packaging sheet 2a are successively overlapped, and the sheet-like article 4 is enclosed. It is an example which manufactures. Further, FIG. 19 shows that two cutting sheets 1 are arranged in parallel to one packaging sheet 2 and bonded to each other, and then bent continuously at the approximate center of the packaging sheet (dashed line F). It is also possible to produce a packaging material in a state in which the packaging sheet and the outer packaging sheet are overlapped.

  In the embodiment shown in FIG. 18, the manufacturing method of the packaging material in which the cutting sheet is arranged in parallel to the sheet conveying direction has been described. However, the method shown in this embodiment is the same as the cutting sheet perpendicular to the sheet conveying direction. Of course, it is also possible to use for the manufacturing method of the packaging material which arrange | positions. Moreover, it cannot be overemphasized that either method of FIG. 11, 12 can be selected as a method of adhering a cutting sheet to a packaging sheet in this case.

  As mentioned above, although the packaging material and its manufacturing method of this invention were demonstrated, this invention is not limited to these Examples, The position, direction, number, etc. which adhere a cutting sheet to a packaging sheet can be changed suitably. Needless to say.

  As described above, according to the present invention, it is possible to provide a packaging material that can be satisfactorily opened without disturbing the cutting line when the packaging material is opened, and is safe in terms of hygiene, and a method for manufacturing the same. Is possible.

DESCRIPTION OF SYMBOLS 1 Cutting sheet 2 Packaging sheet 2a Outer packaging sheet 2b Inner packaging sheet 3 and 5 Packaging material 4 Sheet-like article 6 Half cut wire 7 Sewing wire 9 Protection tape 10 Cutting 11 Sheet | seat periphery adhesion part 12 Grasp rice 13 Strong heat-sealing part 14 Weak Heat fusion part 15 heater

Claims (13)

A cutting sheet having a narrower width than the packaging sheet is bonded to at least one of the front and back surfaces of the packaging sheet,
A packaging material, wherein the cutting sheet is subjected to an easy-to-cut process that facilitates cutting in the longitudinal direction. In a packaging material in which an inner packaging sheet and an outer packaging sheet are overlapped, a peripheral part is adhered, and a sheet-like article is enclosed,
At least one of the inner packaging sheet and the outer packaging sheet is bonded to at least one of the front surface and the back surface of the packaging sheet with a narrower cutting sheet than the packaging sheet,
A packaging material, wherein the cutting sheet is subjected to an easy-to-cut process that facilitates cutting in the longitudinal direction.   The packaging material according to claim 1 or 2, wherein a protective processing is applied to the right and left side edges of the cutting sheet to prevent a cutting line when cutting the cutting sheet from protruding outside the cutting sheet. A packaging material characterized by being made.   4. The packaging material according to claim 3, wherein the protective processing is that a protective tape is attached to the cutting sheet.   The packaging material according to any one of claims 1 to 4, wherein the easy-to-cut processing is that at least one half-cut line or sewing line is formed on the cutting sheet. Wood.   6. The packaging material according to claim 5, wherein both ends of the half-cut line or the sewing machine line are half-cut or cut into a Y shape.   The packaging material according to any one of claims 1 to 4, wherein the easy cutting process is to use a directional sheet for the cutting sheet.   The packaging material according to any one of claims 5 to 7, wherein the cutting sheet is shorter than a length of the packaging sheet to which the cutting sheet is bonded.   The packaging material according to any one of claims 5 to 8, wherein an incision is formed in the vicinity of an end portion of the cutting sheet.   The method for manufacturing a packaging material according to any one of claims 1 to 9, wherein the cutting sheet is arranged and bonded at right angles to a direction in which the packaging sheet is conveyed.   The method for manufacturing a packaging material according to any one of claims 1 to 9, wherein the cutting sheet is arranged and bonded in parallel to a direction in which the packaging sheet is conveyed.   12. The method for manufacturing a packaging material according to claim 11, wherein at least two cutting sheets are arranged in parallel and bonded to the packaging sheet.   The method of manufacturing a packaging material according to any one of claims 2 to 9, wherein the step of superposing the inner packaging sheet and the outer packaging sheet and adhering at least a part of a peripheral edge to the packaging sheet is performed. A method for producing a packaging material, comprising: continuously bonding the inner packaging sheet and then folding the inner packaging sheet and the outer packaging sheet.

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