WO2020170483A1 - Method of manufacturing packaging sheet, method of manufacturing raw material for packaging sheet, and food packaging bag - Google Patents

Method of manufacturing packaging sheet, method of manufacturing raw material for packaging sheet, and food packaging bag Download PDF

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Publication number
WO2020170483A1
WO2020170483A1 PCT/JP2019/034900 JP2019034900W WO2020170483A1 WO 2020170483 A1 WO2020170483 A1 WO 2020170483A1 JP 2019034900 W JP2019034900 W JP 2019034900W WO 2020170483 A1 WO2020170483 A1 WO 2020170483A1
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WO
WIPO (PCT)
Prior art keywords
sheet
opening
strip
unsealing
piece
Prior art date
Application number
PCT/JP2019/034900
Other languages
French (fr)
Japanese (ja)
Inventor
知毅 神谷
Original Assignee
朋和産業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 朋和産業株式会社 filed Critical 朋和産業株式会社
Priority to JP2019568418A priority Critical patent/JP6714957B1/en
Priority to CN201980003065.2A priority patent/CN111936305B/en
Priority to TW108148329A priority patent/TWI808291B/en
Publication of WO2020170483A1 publication Critical patent/WO2020170483A1/en

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B31MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31BMAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00Making flexible containers, e.g. envelopes or bags
    • B31B70/74Auxiliary operations
    • B31B70/81Forming or attaching accessories, e.g. opening devices, closures or tear strings
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D33/00Details of, or accessories for, sacks or bags
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D85/00Containers, packaging elements or packages, specially adapted for particular articles or materials
    • B65D85/50Containers, packaging elements or packages, specially adapted for particular articles or materials for living organisms, articles or materials sensitive to changes of environment or atmospheric conditions, e.g. land animals, birds, fish, water plants, non-aquatic plants, flower bulbs, cut flowers or foliage

Definitions

  • the present invention relates to a method for manufacturing a packaging sheet, a method for manufacturing a raw material for a packaging sheet, and a food packaging bag.
  • FIGS. 16 and 17(a) There are foods such as sandwiches that have a triangular side shape (mainly right-angled triangle shape) or similar shape and are finished into a three-dimensional shape with a predetermined thickness or width.
  • a food packaging bag for packaging this food is generally shown in FIGS. 16 and 17(a).
  • the food packaging bag 1' includes a bag body 10' and a header portion 15'.
  • the bag body 10' is formed by stacking a pair of sheets 2'and 3'having a shape in which the other end side is wider than the one end side, and the top joint portion 11' on one end side and the side joint portions 12' on both side edges are stacked. , 12' are sealed on three sides and the other end side becomes an opening 13'.
  • the header portion 15' is formed by joining the projecting pieces of the sheets 2'and 3'projecting from the top joint portion 11' to each other at appropriate places.
  • an inverted U-shaped cut line 32' is formed on the second sheet 3'of the header portion 15', and an opening tab 33' having the cut line 32' as an outline is formed.
  • An opening strip 5' such as a cut tape, is joined to the inner surface of the second sheet 3'from the tab 33' to the other end of the second sheet 3'.
  • the second sheet 3'and the opening strip 5' may not be sufficiently joined due to the accuracy of the manufacturing apparatus for the food packaging bag 1'(variation in joining conditions, etc.).
  • the tab 33′ when the tab 33′ is pulled down at the time of opening, the tab 33′ or the portion of the second sheet 3′ subsequent thereto is peeled off from the strip 5′ for opening, A problem may arise in that only the second sheet 3'is pulled and cannot be opened properly. And such a problem becomes remarkable, so that the joining strength of the top joining part 11' becomes strong. Therefore, in order to prevent the bonding strength of the top bonding portion 11' from becoming too strong, it has been conventionally practiced to apply a part coat agent to the bonding surface prior to bonding.
  • the food packaging bag described in Patent Document 1 is one in which one end of the opening strip protrudes to the outer surface side of the header portion, and the one end is picked to open. Since the strip for opening is directly pulled and opened, it can be opened appropriately and surely. In this respect, it can be said that the food packaging bag described in Patent Document 1 is superior to the conventional food packaging bag 1'.
  • the present invention has been made in view of such circumstances, and is provided with an unsealing means which is a knob for unsealing and which has one end of the unsealing strip protruding, and which is excellent in mass productivity. It is an object of the present invention to provide a method for producing a raw sheet for packaging, a method for producing a raw material for a packaging sheet, and a packaging bag for food.
  • the manufacturing method of the packaging sheet according to the present invention On one surface of the sheet, in a method for manufacturing a packaging sheet comprising an opening strip extending in a predetermined direction, Forming a score line on the sheet, and forming a cut line to form a free piece that opens to form an opening when bent; On one surface of the sheet, arrange the strip for opening so that the part inside one end of the strip for opening overlaps on the loose piece, and open the strip in a predetermined range from the loose piece to the other end side of the strip for opening.
  • a step of joining the strip to one surface of the sheet By applying an external force toward the loose piece, one end of the strip for opening is moved to the other surface side of the sheet through the opening formed by the loose piece, and is projected from the cut line to the other surface side of the sheet. And a process.
  • the manufacturing method of the packaging sheet material While transporting the sheet material in the longitudinal direction, on one surface of the sheet material, a method for producing a packaging sheet material in which opening strips are attached at predetermined intervals, A step of forming a score line on the original sheet by the cutting mechanism, and forming a free piece that opens by bending to form an opening by forming the score line;
  • the transport/joining mechanism which is located downstream of the cutting mechanism in the transport direction of the sheet material, opens the sheet material on one side so that the part inside the opening strip overlaps the loose piece.
  • An external force applying mechanism located on the downstream side of the sheet material in the conveying direction from the conveying/joining mechanism applies an external force toward the loose piece, so that one end of the opening strip is opened by the loose piece.
  • a pair of sheets having a shape in which the other end side is wider than the one end side are overlapped, and the top joint portion on one end side and the side joint portions on both side edges seal three sides, and the other end side is an opening.
  • a food packaging bag comprising a main body and a header portion composed of a protruding piece of each sheet protruding from the top joint portion
  • One of the sheets is a free piece formed in the header portion by forming a score line, and is provided with a free piece that opens when bent to form an opening. Equipped with a strip for opening to the other end,
  • One end of the unsealing strip is characterized in that it protrudes from the cut line to the outer surface side of one of the sheets to form a tab for unsealing.
  • another method for manufacturing a packaging sheet according to the present invention is On one surface of the sheet, in a method for manufacturing a packaging sheet comprising an opening strip extending in a predetermined direction, A step of forming a score line on the sheet, On one side of the sheet, arrange the strip for opening so that the part inside one end of the strip for opening overlaps the score line, and within a predetermined range from the score line to the other end side of the strip for opening. , A step of joining the opening strip to one surface of the sheet, By applying an external force toward the cut line, one end of the opening strip is moved to the other surface side of the sheet through the opening formed by the cut line, and the cut line moves to the other surface side of the sheet. And a step of projecting.
  • a method for manufacturing a packaging sheet On one surface of the sheet, in a method for manufacturing a packaging sheet comprising an opening strip extending in a predetermined direction, Forming an opening in the sheet, On one surface of the sheet, the unsealing strip is arranged so that the inside part of the unsealing strip overlaps the opening, and the unsealing strip is opened within a predetermined range from the opening to the other end of the unsealing strip.
  • a step of joining the strip to one surface of the sheet A step of moving one end portion of the unsealing strip to the other surface side of the sheet through the opening by applying an external force toward the opening, and projecting from the opening to the other surface side of the sheet.
  • a pair of sheets having a shape in which the other end side is wider than the one end side are overlapped, and the top joint portion on one end side and the side joint portions on both side edges seal three sides, and the other end side is an opening.
  • a food packaging bag comprising a main body and a header portion composed of a protruding piece of each sheet protruding from the top joint portion,
  • One of the sheets is provided with an opening in the header portion, and an opening strip is provided on the inner surface of the one sheet from the opening to the other end side of the sheet,
  • One end of the unsealing strip is characterized in that it protrudes from the opening to the outer surface side of one of the sheets to serve as an unsealing tab.
  • the method for producing a packaging sheet As described above, according to the method for producing a packaging sheet, the method for producing a raw packaging sheet, and the food packaging bag according to the present invention, excellent mass productivity can be realized with a simple configuration and a simple method. it can.
  • FIG. 1 is an exploded perspective view of a food packaging bag according to an embodiment of the present invention.
  • FIG. 2 is a front view of the packaging bag for food.
  • FIG. 3 is a rear view of the packaging bag for food.
  • FIG. 4A is a front view of the second sheet that constitutes the food packaging bag.
  • FIG. 4B is an enlarged view of the unsealing start point portion of FIG.
  • FIG. 5A is a perspective view of the food package packaged in the food packaging bag as viewed from the back side.
  • FIG. 5B is a perspective view showing how the food package is opened.
  • FIG. 1 is an exploded perspective view of a food packaging bag according to an embodiment of the present invention.
  • FIG. 2 is a front view of the packaging bag for food.
  • FIG. 3 is a rear view of the packaging bag for food.
  • FIG. 4A is a front view of the second sheet that constitutes the food packaging bag.
  • FIG. 4B is an enlarged view of the unsealing start point
  • FIG. 6 is explanatory drawing of the manufacturing process of the packaging bag for foodstuffs, Comprising: It is explanatory drawing of the process of forming a score line in a 2nd sheet
  • FIG. 7 is explanatory drawing of the manufacturing process of the packaging bag for foodstuffs, Comprising: It is explanatory drawing of the process of arrange
  • 8(a) and 8(b) are explanatory views of an apparatus configuration for performing the process of FIG. FIG.
  • FIG. 9 is explanatory drawing of the manufacturing process of the packaging bag for foodstuffs, Comprising: It is explanatory drawing of the process of making one end part of the strip for opening project from the notch line to the opposite surface side of a 2nd sheet
  • FIG. 10 is an explanatory view seen from the opposite surface side of FIG. 9.
  • 11(a) to 11(c) are explanatory views of an apparatus configuration for performing the process of FIG. 12A to 12C are explanatory views of another apparatus configuration for carrying out the process of FIG. FIG.
  • FIG. 13 is explanatory drawing of the manufacturing process of the packaging bag for foodstuffs, Comprising: It is explanatory drawing of each process from the 1st and 2nd sheet
  • 14(a) to 14(d) are enlarged views of a main part of a food packaging bag according to another embodiment.
  • 15(a) to 15(d) are enlarged views of a main part of a food packaging bag according to still another embodiment.
  • FIG. 16 is a rear view of a conventional food packaging bag.
  • FIG. 17A is a perspective view of the food package packaged with the food packaging bag, as viewed from the back side.
  • FIG. 17B is a perspective view showing how the food package is opened.
  • FIGS. 1 to 13 a food packaging bag used for packaging a sandwich will be described with reference to FIGS. 1 to 13.
  • the food packaging bag 1 includes a bag body 10 and a header portion 15.
  • the bag body 10 is formed by stacking a pair of sheets (first sheet 2 and second sheet 3) having a shape in which the other end side is wider than the one end side. Three sides are sealed by the side joints 12 and 12, and the other end becomes the opening 13.
  • the protruding pieces of the sheets 2 and 3 protruding from the top joint portion 11 are joined to each other at appropriate places and are integrated.
  • the first sheet is also referred to as a front sheet and the second sheet is also referred to as a back sheet.
  • the first sheet 2 is made of a heat-welding plastic sheet such as polyethylene or polypropylene.
  • the first sheet 2 is configured to include a body portion 20 and a tip portion 21 (the protruding piece).
  • the body portion 20 has a shape that gradually widens from one end side to the other end side.
  • the tip portion 21 has a narrow shape extending from one end of the body portion 20.
  • the second sheet 3 is also made of a heat-welding plastic sheet such as polyethylene or polypropylene.
  • the second sheet 3 is configured to include a body portion 30 and a tip portion 31 (the protruding piece).
  • the body portion 30 has a shape that gradually widens from one end side to the other end side.
  • the tip portion 31 has a narrow shape extending from one end of the body portion 30.
  • the body portions 20 and 30 are trapezoidal, and the tip portions 21 and 31 are rectangular.
  • one end of the body portions 20 and 30 (and the other ends of the tip portions 21 and 31 corresponding thereto) are directed from one end side of the sheets 2 and 3 to the other end side (hereinafter, referred to as “longitudinal direction”).
  • one end of each of the body portions 20 and 30 is a linear shape that is parallel to a direction orthogonal to the longitudinal direction (hereinafter referred to as “width direction”).
  • Both side edges of the tip end portions 21 and 31 are straight lines parallel to the longitudinal direction, except that both side edges of the body portions 20 and 30 are inclined.
  • the other end side is lacking due to the notch portion 14.
  • the other end side of the body portions 20, 30 is narrowed by the notch portion 14.
  • the top joint portion 11 is formed by heat-sealing the first and second sheets 2 and 3 along one end of the body portions 20 and 30.
  • the side joint portion 12 is formed by heat-sealing the side edges (oblique sides) of the body portions 20 and 30 and the side edges (vertical sides) of the tip portions 21 and 31.
  • the top joint portion 11 is a band-shaped seal formed by welding using a heat seal bar and having a predetermined width in the longitudinal direction.
  • the side joint portion 12 is a line seal formed by fusing.
  • the top joint portion 11 has a width of several millimeters or more.
  • the width of the side joint portion 12 is 1 mm or less.
  • the inside of the bag body 10 configured as described above serves as a food container.
  • the inner sheet 4 is attached to the inner surface of the first sheet 2 in the bag body 10.
  • the other end of the inner sheet 4 is joined at two points by a point seal or the like (joint 22), and one end is a free end.
  • a cut line 32 is formed on the second sheet 3 in the header portion 15. Then, the second sheet 3 in the header portion 15 is formed with the cut lines 32 to form the loose pieces 33.
  • the score line 32 has a shape in which both end points 32 a and 32 a approach the top joint portion 11.
  • the free piece 33 has the cut line 32 as an outline, a fixed end between the both end points 32a and 32a, a free end at one end, and an opening when bent at the fixed end to form an opening.
  • the score line 32 is formed in an inverted U shape.
  • the loose piece 33 includes one end edge 33a along the width direction and the pair of left and right side edges 33b and 33b along the longitudinal direction, and is an upward tongue piece.
  • a strip 5 for opening is provided from the loose piece 33 to the other end side of the second sheet 3.
  • the strip 5 for opening is provided along the longitudinal direction, for example, at the central portion in the width direction of the second sheet 3.
  • the strip 5 for unsealing is joined to the inner surface of the second sheet 3 by heat sealing, adhesion, or the like (joint portion 34).
  • the strip 5 for unsealing is applied to the inner surface (the surface facing the second sheet 3) of the coating agent and then bonded to the inner surface of the second sheet 3 by thermal adhesion or self-adhesion. ..
  • the strip 5 for opening is, for example, a cut tape or a thread.
  • the opening strip 5 is a strip-shaped cut tape having a width of 5 mm or more, or 10 mm or more.
  • the cut tape is obtained by finely cutting a heat-welding plastic sheet such as biaxially oriented polyester or polyethylene terephthalate (PET), polyethylene (PE), polypropylene (PP), or biaxially oriented polypropylene (OPP).
  • the one end 5a of the opening strip 5 is not joined to the second sheet 3.
  • One end 5a of the opening strip 5 projects from the cut line 32 to the outer surface side of the second sheet 3 and serves as an opening tab.
  • the opening strip 5 is pulled, the free piece 33 is used as the opening start point, and the second sheet 3 is cut with a predetermined width.
  • the cut open portion is formed in the sheet 3 of No. 2. If the protruding amount of the one end 5a of the unsealing strip 5 is short, it is difficult to pinch. On the contrary, if the length is long, it may be easily broken, which may hinder the transportability of the manufacturing apparatus. Therefore, the protruding amount of the one end portion 5a of the unsealing strip 5 is set to be 5 mm or more, or 10 mm or more, or 15 mm or more, and 25 mm or less, or 20 mm or less.
  • the unsealing strip 5 is also joined to the free piece 33 and integrated with the free piece 33.
  • the opening strip 5 is not joined to the one end edge 33a of the loose piece 33. Therefore, a non-joint portion having a width G1 is interposed between the one end edge 34a of the joining portion 34 and the one end edge 33a of the loose piece 33. If the non-joint portion is not provided or the width G1 is small, there is a concern that the joining may cross over the score line 32 due to the accuracy of the manufacturing apparatus of the food packaging bag 1 and the like (meandering of the sheet material). There is.
  • the one end 5a of the opening strip 5 is locked, and the one end 5a cannot be projected from the cut line 32 to the outer surface side of the second sheet 3.
  • the width G1 is large, the loose piece 33 can be pinched, and there is a concern that an erroneous opening operation may be performed in which the loose piece 33 is pinched and opened.
  • the strip 5 for opening is not used, and only the second sheet 3 is pulled, and it is impossible to properly open the sheet.
  • the width G1 of the non-bonded portion is set to be a range of 1 mm or more, or 1.5 mm or more, and 5 mm or less, or 3 mm or less, or 2 mm or less as a deflection width with respect to a manufacturing error. ..
  • the width of the strip 5 for opening is smaller than the width of the fixed end of the loose piece 33 (that is, the distance between the end points 32a and 32a of the cut line 32). Therefore, a gap portion having a width G2 is interposed between each side edge 5b of the opening strip 5 and each side edge 33b of the loose piece 33 or each end point 32a of the cut line 32. If the gap is not provided or the width G2 is small, one end 5a of the unsealing strip 5 is caught by the cut line 32, and the one end 5a projects from the cut line 32 to the outer surface side of the second sheet 3. There is a concern that it will not be possible to do so.
  • the width G2 of the gap portion is set to be 1 mm or more, or 1.5 mm or more, as the deflection width for the manufacturing error.
  • one end 5a of the opening strip 5 has the free piece 33 as a fixed end and one end as a free end, and extends from the cut line 32 to the outer surface side of the second sheet 3 in the header portion 15. Project.
  • the other part of the strip 5 for opening is along the inner surface of the second sheet 3 from the free piece 33.
  • the protruding one end 5a of the opening strip 5 is picked and pulled down. Then, the strip 5 for opening is pulled, a division opening portion is formed in the second sheet 3, and the food can be taken out from the division opening portion.
  • one end 5a of the strip 5 for opening is slightly floated and separated from the outer surface of the header 15 so that it can be easily grasped.
  • the one end portion 5a of the unsealing strip 5 is sufficiently separated from the header portion 15 and becomes easier to pinch. Therefore, the opening operation can be smoothly performed.
  • the food packaging bag according to the present embodiment has the above-described configuration. Next, a method for manufacturing the food packaging bag according to the present embodiment will be described.
  • the manufacturing process is roughly divided, and as shown in FIGS. 6 to 12, one end portion 5a of the unsealing strip 5 protrudes to the outer surface side of the second sheet 3 and is provided with unsealing means serving as an unsealing tab. It includes a step of manufacturing the second sheet material 3X, and a step of manufacturing the food packaging bag 1 from the first sheet material 2X and the second sheet material 3X, as shown in FIG.
  • this type of food packaging bag 1 having a trapezoidal shape is manufactured so that, due to its shape, it is lateral and alternately opposite to the conveying direction of the sheet material 2X, 3X. That is, the food packaging bag 1 in which the opening 13 is formed on one side in the width direction intersecting the transport direction of the original sheet 2X, 3X, and the header portion 15 is formed on the other side in the width direction, The packaging bag 1 for foods, in which the opening 13 is formed on the other side in the direction and the header 15 is formed on one side in the width direction, is manufactured alternately. Therefore, in the following description and drawings, the former configuration of the food packaging bag 1 will be referred to as “one” for convenience, and will be denoted by “A” after the reference numeral and the latter. To the configuration of the food packaging bag 1, the word “other” is attached, and "B” is attached after the reference numeral.
  • the step of producing the second sheet material 3X is an embodiment of the method for producing a packaging sheet and the method for producing a packaging sheet material according to the present invention.
  • This step is i) a step of forming a cut line 32 on the second sheet material 3X, more specifically, forming a cut line 32 on the second sheet material 3X, as shown in FIG.
  • the opening strip is formed on the inner surface of the second sheet material 3X.
  • the opening strip 5 is arranged so that the portion inside the one end 5a of the sheet 5 overlaps the free strip 33, and the strip 5 is opened within a predetermined range from the free strip 33 to the other end of the strip 5.
  • a step of joining the body 5 to the inner surface of the second sheet material 3X (second step), iii) As shown in FIGS. 9 to 12, by applying an external force toward the loose piece 33, more specifically, By applying an external force toward the part of the strip for opening 5 in the loose piece 33, the one end 5a of the strip for opening 5 is made to oppose the second sheet material 3X through the opening formed by the strip 33.
  • the step (third step) of moving to the surface (outer surface) side and projecting from the score line 32 to the opposite surface side of the second sheet material 3X (third step).
  • the second sheet material 3X is intermittently conveyed.
  • the cutting mechanism (not shown) for the one cutting line 32A and the cutting mechanism (not shown) for the other cutting line 32B, which are arranged on the transport path, are the second cutting mechanism.
  • one cutting line 32A and the other cutting line 32B are respectively formed as shown in FIG.
  • the cutting mechanism includes, as an example, a receiving roller and a tool.
  • the cutting mechanism reciprocates the receiving roller to make the notch blade provided on the surface of the tool come into contact with the receiving roller, thereby forming the cutting line 32 on the second original sheet 3X.
  • the cutting mechanism is not limited to such a configuration.
  • the cutting mechanism may be a mechanism having another configuration as long as the cutting line 32 can be formed on the second original sheet 3X.
  • the second sheet material 3X is intermittently conveyed.
  • the transfer/joining mechanisms 100 and 101 operate in synchronization with the intermittent transfer of the second sheet material 3X, so that one opening strip 5A and the other opening strip 5B are opened. It is separated from the raw sheet 5X of the strip body, conveyed, arranged on the inner surface of the second raw sheet 3X, and joined (joined portions 34A, 34B).
  • the cutting mechanism 100 includes, for example, a pair of cutting blades.
  • the cutting mechanism 100 cuts the sheet raw fabric 5X of the unfolding strip fed out from the roll body along the transport direction of the sheet original fabrics 2X, 3X with a predetermined width to form the unsealing strip 5.
  • the cutting mechanism is not limited to this configuration.
  • the cutting mechanism may be a mechanism having another structure as long as it can form the opening strip 5 having a predetermined width.
  • the transport/joining mechanism 101 includes, for example, a holding bar 102 and a joining bar 103.
  • the holding bar 102 holds the opening strip 5 by sucking it along the longitudinal direction, and conveys the opening strip 5 from the cutting position to the arrangement position on the second sheet material 3X. ..
  • the joining bar 103 is arranged on the opposite side of the second sheet material 3X at the arrangement position of the unsealing strip 5 on the second sheet material 3X.
  • the joining bar 103 is, for example, a heat seal bar.
  • the transporting/bonding mechanism 101 holds the strip 5 for opening formed by cutting with a holding bar 102, and transports it by moving the holding bar 102 (elevating in the example of FIG. 8) to obtain a second sheet original.
  • the holding bar 102 and the joining bar 103 sandwich the second sheet material 3X and the unsealing strip 5 arranged on the inner side and heat-seal the joined portion. 34 is formed.
  • one end of the joining bar 103 is shorter than the holding bar 102. Therefore, the portion of the opening strip 5 that is held by the holding bar 102 but is not sandwiched between the holding bar 102 and the second bar 3X is not joined to the one end portion 5a and the one end portion 5a. Will be a non-bonded portion adjacent to.
  • the transport/joining mechanism is not limited to these configurations.
  • the transporting/joining mechanism is capable of joining the unsealing strip 5 to the inner surface of the second sheet material 3X while leaving the one end 5a and the non-joining portion, that is, the unsealing strip from the loose piece 33.
  • a mechanism having another configuration may be used as long as the opening strip 5 can be joined to the inner surface of the second original sheet 3X within a predetermined range on the other end side of the body 5.
  • the second sheet material 3X is intermittently conveyed.
  • the external force applying mechanisms 104 and 105 for the one opening strip 5A and the other external force adding mechanism 104 for the other opening strip 5B, which are arranged on the transport path. , 105 are operated in synchronism with the intermittent conveyance of the second original sheet 3X, so that one end 5a of one opening strip 5A and one end 5a of the other opening strip 5B are respectively , And is extruded to the opposite side of the second original sheet 3X.
  • the external force applying mechanism includes, for example, an air nozzle 104 (FIG. 11). This external force applying mechanism bends the loose piece 33 to form an opening by blowing air toward the loose piece 33 and a portion of the loose piece 33 in the loose piece 33, and the strip for opening is opened through this opening. The one end 5a of the sheet 5 is moved to the opposite side of the second original sheet 3X.
  • the external force applying mechanism includes, for example, the rod 105 (FIG. 12) that moves up and down. This external force applying mechanism applies the tip of the rod 105 to the free piece 33 and the portion of the opening strip 5 in the free piece 33, and further pushes the rod 105 to bend the free piece 33 to form an opening.
  • the one end portion 5a of the unsealing strip 5 is moved to the opposite surface side of the second original sheet 3X via.
  • the external force adding mechanism is not limited to these configurations.
  • the external force applying mechanism may be a mechanism having another structure as long as it can move the one end portion 5a of the opening strip 5 to the opposite surface side of the second sheet material 3X.
  • a suction mechanism or a suction mechanism is arranged on the opposite surface side of the second sheet material 3X, and the loose piece 33 is sucked or adsorbed from the opposite surface side, and the one end 5a of the opening strip 5 is moved to the second side.
  • the sheet may be moved to the opposite side of the original sheet 3X.
  • the second original sheet 3X is manufactured as described above. Then, the second original sheet 3X is once wound into a roll and then set in the bag making apparatus. Alternatively, the second sheet material 3X is continuously conveyed by being manufactured by the bag making device, and then the food packaging bag 1 is formed from the first sheet material 2X and the second sheet material 3X. Move to manufacturing process.
  • the process for manufacturing the food packaging bag 1 is as described in, for example, Japanese Patent Laid-Open No. 2005-219319, and is a method that has been conventionally used. Therefore, much will not be described here.
  • the first original sheet 2X and the second original sheet 3X are overlapped so that the inner surfaces thereof face each other, and intermittently conveyed in this state, iv) the top portion
  • the process includes the steps of forming the joint portion 11, v) separating the food packaging bag 1 individually while forming the side joint portion 12, and vi) forming the cutout portion 14.
  • the food packaging bag 1 is completed through these steps.
  • the step of joining the inner sheet 4 to the inner surface of the first original sheet 2X is performed before the first original sheet 2X and the second original sheet 3X are superposed on each other.
  • the second sheet material 3X according to the present embodiment is provided with the unsealing means in which the one end portion 5a of the unsealing strip 5 projects to the outer surface side of the second sheet 3 and serves as the unsealing tab. According to the manufacturing method, excellent mass productivity can be realized with a simple configuration and a simple method.
  • the direction in which the one end 5a of the opening strip 5 extends and the direction in which the loose piece 33 extends are convex upward. Therefore, the one end portion 5a of the unsealing strip 5 can be reliably moved to the opposite surface side of the second sheet material 3X with a small force.
  • the present invention is not limited to the above embodiment.
  • the present invention can be variously modified without departing from the scope of the present invention.
  • the shape and structure of the score line and the loose piece are not limited to those in the above embodiment.
  • the shape and structure of the score line and the loose piece may be those shown in FIGS. 14 and 15.
  • one end 5a of the unsealing strip 5 is provided with a display section 50 that can be identified from the peripheral area.
  • the strip 5 for opening is transparent. For this reason, if the one end 5a is left as it is, it is less noticeable. It may be difficult for some purchasers to recognize that it is a pick for opening. Therefore, by printing the display portion 50 on the one end portion 5a of the opening strip 5, any purchaser of the product can easily recognize that the opening strip is the opening tab.
  • the display unit 51 in addition to or in place of the display unit 50 including the information indicating that it is a pick for opening, a simple color identifiable from the peripheral area, as shown in FIG.
  • the display unit 51 may be a pattern or the like.
  • FIG. 14C shows a ⁇ -shaped cut line 32, that is, a line (horizontal line) 32b along the width direction that intersects the longitudinal direction, and a length from a position inside the end points of the line 32b.
  • the cut line 32 is formed by left and right lines (vertical lines) 32c, 32c extending along the direction.
  • the header portion 15 is formed with the cut lines 32d, 32d facing outward in the width direction. It Therefore, the remaining second sheet 3 after opening can be opened to the left and right to enlarge the division opening portion, and the food can be easily taken out.
  • the one shown in FIG. 14(d) has an X-shaped cut line 32 formed by intersecting two diagonal cut lines 32e, 32e. Even with this configuration, the cut lines 32f and 32f facing outward in the width direction are formed in the header portion 15 after opening. Therefore, the remaining second sheet 3 after opening can be opened left and right to be wide open.
  • FIG. 15A shows an H-shaped cut line 32, that is, a line (horizontal line) 32g along the width direction intersecting the longitudinal direction, and from both end points of the line 32g along both longitudinal directions.
  • a cut line 32 is formed by extending left and right lines (vertical lines) 32h, 32h. According to such a configuration, in addition to the upward free piece 33, the downward free piece 35 can be formed so as to face the free piece 33.
  • FIG. 15(b) shows a downward cut line 32, that is, a cut line 32 in which the direction in which the one end 5a of the opening strip 5 extends and the direction in which the loose piece 35 extends are opposite. Is formed.
  • the cut line may be a straight line or a slightly curved line such as a line (horizontal line) along the width direction that intersects the longitudinal direction or a line inclined with respect to the width direction.
  • the device and method for moving the one end 5a of the unsealing strip 5 to the opposite surface side of the second sheet 3 are basically the same as those described above.
  • the joint portion 34 between the second sheet 3 and the unsealing strip 5 may be formed so that the centers thereof coincide with each other, as shown in FIG. 15(d). Moreover, you may form a junction part in the width direction whole area of the strip 5 for opening. Moreover, you may form a joining part only in the width direction both-sides edge part of the strip 5 for opening. Moreover, it is not essential that the joint portion is formed up to the other end of the strip 5 for opening. In short, it is sufficient if the strip 5 for opening does not peel off from the second sheet 3.
  • the joint portion is not limited to one formed continuously along the longitudinal direction.
  • the joining portion may be formed of a point seal provided at an appropriate place including the place on the loose piece 33.
  • the score line is not limited to the full score line.
  • the cut line may be one that breaks when an external force is applied by the external force applying mechanism.
  • the cut line may be a half cut line or a perforation.
  • the strip for opening is not limited to one made of one member.
  • the unsealing strip may be formed by integrally joining the body and the one end, which are separate bodies.
  • the opening means may be provided not on the second sheet 3 but on the first sheet 2.
  • shapes, parts or states such as “trapezoidal”, “rectangular”, “rectangular”, “straight line”, “center part”, “end part”, “side part”, “match”, “parallel”
  • the term used in the present invention includes not only the term itself but also the concept of “abbreviation” which means that it is close to or similar to the term.
  • the food to be packaged is not limited to sandwiches.
  • the food may be in a form that can be stored in a food packaging bag.
  • the food may be cooked rice food such as bread, cakes, and rice balls.
  • the type of food is not limited.
  • the method of manufacturing the packaging sheet according to the present invention is not limited to the above embodiment.
  • the present invention can be variously modified without departing from the scope of the present invention.
  • the packaging sheet is not limited to the one used for a specific packaging form.
  • the packaging sheet includes various types of sheets such as outer sheets in food packaging materials in which rice balls and seaweed sheets are separated, pillow packaging sheets, and sheets used for general bags such as flat bags and gusset bags. It covers all items used in packaging.
  • the packaging target is not limited to food.
  • the packaging target may be an article to be packaged other than food.
  • packaging sheet is not limited to a continuous long sheet.
  • packaging sheet may be in the form of a single sheet.
  • the packaging sheet is not limited to a single plastic sheet.
  • the packaging sheet may be a sheet made of other material such as paper or paper sheet.
  • the packaging sheet includes, for example, two sheets which are joined together at their end portions into one sheet, or three sheets which are successively joined together at their end portions into one sheet.
  • a plurality of sheets may be used to form one sheet.
  • the material of each sheet may be different.
  • some sheets may be paper or paper quality sheets instead of plastic sheets.
  • Inner sheet, 5, 5A, 5B... Strip for opening 5X ... Raw sheet material for opening strip 5a ... One end (pick) 5b ... Side edge, 50 ... Display section, 51 ... Display section, 100 ... Cutting mechanism, 101 ... Conveying/joining mechanism, 102 ... Holding bar , 103... Joining bar, 104... Air nozzle (external force applying mechanism), 105... Rod (external force applying mechanism), L1... Center line in the width direction of the opening strip 5 and the loose piece 33, L2... Width direction of the joining portion 34 , The gap between the one end edge 34a of the joint portion 34 and the one end edge 33a of the loose piece 33 (the width of the non-joint portion), G2... The side edge 5b of the opening strip 5 and the end points of the cut line 32. 32a, gap (width of gap), S1... Deviation amount between center line L1 and center line L2

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Abstract

In order to improve the mass productivity of a packaging sheet including an unsealing means in which one end 5a of an unsealing strip 5 protrudes to form an unsealing grip piece, a method of manufacturing a packaging sheet according to the present invention comprises: a step in which a separation piece 33 that forms an opening when bent and opened is formed by forming a score line 32 on a sheet 3; a step in which while the unsealing strip 5 is arranged such that a portion inside the one end 5a of the unsealing strip 5 overlaps with the separation piece 33, the unsealing strip 5 is bonded to one surface of the sheet 3 in a predetermined range from the separation piece 33 to the other end side of the unsealing strip 5; and a step in which by applying an external force to the separation piece 33, the one end 5a of the unsealing strip 5 moves to the other surface side of the sheet 3 via the opening formed by the separation piece 33 to protrude from the score line 32 to the other surface side of the sheet 3.

Description

包装用シートの製造方法、包装用シート原反の製造方法及び食品用包装袋Packaging sheet manufacturing method, packaging sheet material manufacturing method, and food packaging bag
 本発明は、包装用シートの製造方法、包装用シート原反の製造方法及び食品用包装袋に関する。 The present invention relates to a method for manufacturing a packaging sheet, a method for manufacturing a raw material for a packaging sheet, and a food packaging bag.
 側面形状が三角形状(主として直角三角形状)又はこれに類似する形状で、所定の厚み又は幅を有する立体形状に仕上げられたサンドイッチ等の食品がある。この食品を包装するための食品用包装袋は、図16及び図17(a)に示すものが一般的である。  There are foods such as sandwiches that have a triangular side shape (mainly right-angled triangle shape) or similar shape and are finished into a three-dimensional shape with a predetermined thickness or width. A food packaging bag for packaging this food is generally shown in FIGS. 16 and 17(a).
 食品用包装袋1’は、袋本体10’と、ヘッダ部15’とを備える。袋本体10’は、一端側よりも他端側が幅広となる形状を有する一対のシート2’,3’が重ね合わせられ、一端側の頂部接合部11’と両側縁の側部接合部12’,12’により三方が封止され、他端側が開口部13’となるものである。ヘッダ部15’は、頂部接合部11’から突出する各シート2’,3’の突出片が適宜の箇所で互いに接合され、一体化されるものである。 The food packaging bag 1'includes a bag body 10' and a header portion 15'. The bag body 10' is formed by stacking a pair of sheets 2'and 3'having a shape in which the other end side is wider than the one end side, and the top joint portion 11' on one end side and the side joint portions 12' on both side edges are stacked. , 12' are sealed on three sides and the other end side becomes an opening 13'. The header portion 15' is formed by joining the projecting pieces of the sheets 2'and 3'projecting from the top joint portion 11' to each other at appropriate places.
 ヘッダ部15’における第2のシート3’には、たとえば逆U字状の切込線32’が形成されるとともに、切込線32’を外形線とする開封用の摘み片33’が形成される。第2のシート3’の内面には、摘み片33’から第2のシート3’の他端側にかけて、カットテープ等の開封用条体5’が接合される。 For example, an inverted U-shaped cut line 32' is formed on the second sheet 3'of the header portion 15', and an opening tab 33' having the cut line 32' as an outline is formed. To be done. An opening strip 5', such as a cut tape, is joined to the inner surface of the second sheet 3'from the tab 33' to the other end of the second sheet 3'.
 食品用包装袋1’により包装された食品を食する際には、図17(b)に示すように、摘み片33’を摘んで引き下ろす。そうすると、開封用条体5’が引っ張られて第2のシート3’に分断開放部が形成され、この分断開放部から食品を取り出すことができる。 When eating the food packaged in the food packaging bag 1', as shown in FIG. 17(b), the knob 33' is picked and pulled down. Then, the strip 5'for unsealing is pulled to form a split open portion on the second sheet 3', and the food can be taken out from the split open portion.
 しかしながら、食品用包装袋1’の製造装置の精度等(接合条件のバラツキ等)の影響により、第2のシート3’と開封用条体5’が十分に接合されない場合がある。そのような食品用包装袋1’においては、開封時に摘み片33’を引き下ろす際、摘み片33’又はそれに続く第2のシート3’の部分が開封用条体5’から剥離し、第2のシート3’だけが引っ張られ、適切に開封することができない、という問題が生じ得る。そして、かかる問題は、頂部接合部11’の接合強度が強くなるほど、顕著となる。そこで、頂部接合部11’の接合強度が強くなり過ぎないよう、接合に先立ち、接合面にパートコート剤を塗布するといったことも従来より行われている。 However, the second sheet 3'and the opening strip 5'may not be sufficiently joined due to the accuracy of the manufacturing apparatus for the food packaging bag 1'(variation in joining conditions, etc.). In such a packaging bag for food 1′, when the tab 33′ is pulled down at the time of opening, the tab 33′ or the portion of the second sheet 3′ subsequent thereto is peeled off from the strip 5′ for opening, A problem may arise in that only the second sheet 3'is pulled and cannot be opened properly. And such a problem becomes remarkable, so that the joining strength of the top joining part 11' becomes strong. Therefore, in order to prevent the bonding strength of the top bonding portion 11' from becoming too strong, it has been conventionally practiced to apply a part coat agent to the bonding surface prior to bonding.
 これらの問題を解決する観点からいえば、特許文献1に記載された食品用包装袋は、開封用条体の一端部がヘッダ部の外面側に突出し、この一端部を摘んで開封するものであり、開封用条体を直接引っ張って開封するため、適切かつ確実に開封することができる。この点で、特許文献1に記載された食品用包装袋は、上記従来の食品用包装袋1’よりも優れているといえる。 From the viewpoint of solving these problems, the food packaging bag described in Patent Document 1 is one in which one end of the opening strip protrudes to the outer surface side of the header portion, and the one end is picked to open. Since the strip for opening is directly pulled and opened, it can be opened appropriately and surely. In this respect, it can be said that the food packaging bag described in Patent Document 1 is superior to the conventional food packaging bag 1'.
登録実用新案第3072028号公報Registered utility model No. 3072028
 しかしながら、特許文献1に記載された食品用包装袋は、シートにどのような加工を施すことで、開封用条体の一端部をシートの外面側に突出させることができるようにしているのか不明である。また、特許文献1に記載された食品用包装袋は、どのような方法で、開封用条体の一端部をシートの外面側に突出させるのかが不明である。このため、大量に消費される食品用包装袋を量産することは不可能である。 However, in the food packaging bag described in Patent Document 1, it is unknown what kind of processing is performed on the sheet so that one end of the opening strip can be projected to the outer surface side of the sheet. Is. Further, in the food packaging bag described in Patent Document 1, it is unclear how to cause one end of the opening strip to project to the outer surface side of the sheet. For this reason, it is impossible to mass-produce food packaging bags that are consumed in large quantities.
 そこで、本発明は、かかる事情に鑑みてなされたもので、開封用条体の一端部が突出し、開封用の摘み片となる開封手段を備えるものであって、量産性に優れた包装用シートの製造方法、包装用シート原反の製造方法及び食品用包装袋を提供することを課題とする。 Therefore, the present invention has been made in view of such circumstances, and is provided with an unsealing means which is a knob for unsealing and which has one end of the unsealing strip protruding, and which is excellent in mass productivity. It is an object of the present invention to provide a method for producing a raw sheet for packaging, a method for producing a raw material for a packaging sheet, and a packaging bag for food.
 本発明に係る包装用シートの製造方法は、
 シートの一面に、所定方向に延びる開封用条体を備える包装用シートの製造方法において、
 シートに、切込線を形成するとともに、切込線の形成により、曲げると開いて開口を形成する遊離片を形成する工程と、
 シートの一面に、開封用条体の一端部よりも内側の部分が遊離片上に重なるように、開封用条体を配置し、遊離片から開封用条体の他端側の所定範囲で、開封用条体をシートの一面に接合する工程と、
 遊離片に向けて外力を加えることにより、開封用条体の一端部を、遊離片が形成する開口を介してシートの他面側に移動させ、切込線からシートの他面側に突出させる工程とを備える
 ことを特徴とする。
The manufacturing method of the packaging sheet according to the present invention,
On one surface of the sheet, in a method for manufacturing a packaging sheet comprising an opening strip extending in a predetermined direction,
Forming a score line on the sheet, and forming a cut line to form a free piece that opens to form an opening when bent;
On one surface of the sheet, arrange the strip for opening so that the part inside one end of the strip for opening overlaps on the loose piece, and open the strip in a predetermined range from the loose piece to the other end side of the strip for opening. A step of joining the strip to one surface of the sheet,
By applying an external force toward the loose piece, one end of the strip for opening is moved to the other surface side of the sheet through the opening formed by the loose piece, and is projected from the cut line to the other surface side of the sheet. And a process.
 また、本発明に係る包装用シート原反の製造方法は、
 シート原反を長手方向に搬送しながら、シート原反の一面に、開封用条体を所定間隔で貼り付けていく包装用シート原反の製造方法において、
 切断機構により、シート原反に、切込線を形成するとともに、切込線の形成により、曲げると開いて開口を形成する遊離片を形成する工程と、
 切断機構よりもシート原反の搬送方向の下流側に位置する搬送・接合機構により、シート原反の一面に、開封用条体の一端部よりも内側の部分が遊離片上に重なるように、開封用条体を配置し、遊離片から開封用条体の他端側の所定範囲で、開封用条体をシート原反の一面に接合する工程と、
 搬送・接合機構よりもシート原反の搬送方向の下流側に位置する外力付加機構により、遊離片に向けて外力を加えることにより、開封用条体の一端部を、遊離片が形成する開口を介してシート原反の他面側に移動させ、切込線からシート原反の他面側に突出させる工程とを備える
 ことを特徴とする。
Further, the manufacturing method of the packaging sheet material according to the present invention,
While transporting the sheet material in the longitudinal direction, on one surface of the sheet material, a method for producing a packaging sheet material in which opening strips are attached at predetermined intervals,
A step of forming a score line on the original sheet by the cutting mechanism, and forming a free piece that opens by bending to form an opening by forming the score line;
The transport/joining mechanism, which is located downstream of the cutting mechanism in the transport direction of the sheet material, opens the sheet material on one side so that the part inside the opening strip overlaps the loose piece. A step of arranging the strip, and joining the strip for opening to one surface of the original sheet in a predetermined range from the free piece to the other end side of the strip for opening,
An external force applying mechanism located on the downstream side of the sheet material in the conveying direction from the conveying/joining mechanism applies an external force toward the loose piece, so that one end of the opening strip is opened by the loose piece. And a step of causing the sheet to move to the other side of the sheet and project from the cut line to the other side of the sheet.
 また、本発明に係る食品用包装袋は、
 一端側よりも他端側が幅広となる形状を有する一対のシートが重ね合わせられ、一端側の頂部接合部と両側縁の側部接合部により三方が封止され、他端側が開口部となる袋本体と、頂部接合部から突出する各シートの突出片で構成されるヘッダ部とを備える食品用包装袋において、
 一方のシートは、ヘッダ部に、切込線の形成により形成される遊離片であって、曲げると開いて開口を形成する遊離片を備えるとともに、一方のシートの内面に、遊離片からシートの他端側にかけて開封用条体を備え、
 開封用条体の一端部は、切込線から一方のシートの外面側に突出して開封用の摘み片となる
 ことを特徴とする。
Further, the food packaging bag according to the present invention,
A pair of sheets having a shape in which the other end side is wider than the one end side are overlapped, and the top joint portion on one end side and the side joint portions on both side edges seal three sides, and the other end side is an opening. In a food packaging bag comprising a main body and a header portion composed of a protruding piece of each sheet protruding from the top joint portion,
One of the sheets is a free piece formed in the header portion by forming a score line, and is provided with a free piece that opens when bent to form an opening. Equipped with a strip for opening to the other end,
One end of the unsealing strip is characterized in that it protrudes from the cut line to the outer surface side of one of the sheets to form a tab for unsealing.
 また、別の本発明に係る包装用シートの製造方法は、
 シートの一面に、所定方向に延びる開封用条体を備える包装用シートの製造方法において、
 シートに切込線を形成する工程と、
 シートの一面に、開封用条体の一端部よりも内側の部分が切込線上に重なるように、開封用条体を配置し、切込線から開封用条体の他端側の所定範囲で、開封用条体をシートの一面に接合する工程と、
 切込線に向けて外力を加えることにより、開封用条体の一端部を、切込線が形成する開口を介してシートの他面側に移動させ、切込線からシートの他面側に突出させる工程とを備える
 ことを特徴とする。
Further, another method for manufacturing a packaging sheet according to the present invention is
On one surface of the sheet, in a method for manufacturing a packaging sheet comprising an opening strip extending in a predetermined direction,
A step of forming a score line on the sheet,
On one side of the sheet, arrange the strip for opening so that the part inside one end of the strip for opening overlaps the score line, and within a predetermined range from the score line to the other end side of the strip for opening. , A step of joining the opening strip to one surface of the sheet,
By applying an external force toward the cut line, one end of the opening strip is moved to the other surface side of the sheet through the opening formed by the cut line, and the cut line moves to the other surface side of the sheet. And a step of projecting.
 また、さらに別の本発明に係る包装用シートの製造方法は、
 シートの一面に、所定方向に延びる開封用条体を備える包装用シートの製造方法において、
 シートに開口を形成する工程と、
 シートの一面に、開封用条体の一端部よりも内側の部分が開口上に重なるように、開封用条体を配置し、開口から開封用条体の他端側の所定範囲で、開封用条体をシートの一面に接合する工程と、
 開口に向けて外力を加えることにより、開封用条体の一端部を、開口を介してシートの他面側に移動させ、開口からシートの他面側に突出させる工程とを備える
 ことを特徴とする。
Further, a method for manufacturing a packaging sheet according to still another aspect of the present invention,
On one surface of the sheet, in a method for manufacturing a packaging sheet comprising an opening strip extending in a predetermined direction,
Forming an opening in the sheet,
On one surface of the sheet, the unsealing strip is arranged so that the inside part of the unsealing strip overlaps the opening, and the unsealing strip is opened within a predetermined range from the opening to the other end of the unsealing strip. A step of joining the strip to one surface of the sheet,
A step of moving one end portion of the unsealing strip to the other surface side of the sheet through the opening by applying an external force toward the opening, and projecting from the opening to the other surface side of the sheet. To do.
 また、別の本発明に係る食品用包装袋は、
 一端側よりも他端側が幅広となる形状を有する一対のシートが重ね合わせられ、一端側の頂部接合部と両側縁の側部接合部により三方が封止され、他端側が開口部となる袋本体と、頂部接合部から突出する各シートの突出片で構成されるヘッダ部とを備える食品用包装袋において、
 一方のシートは、ヘッダ部に、開口を備えるとともに、一方のシートの内面に、開口からシートの他端側にかけて開封用条体を備え、
 開封用条体の一端部は、開口から一方のシートの外面側に突出して開封用の摘み片となる
 ことを特徴とする。
Further, another food packaging bag according to the present invention,
A pair of sheets having a shape in which the other end side is wider than the one end side are overlapped, and the top joint portion on one end side and the side joint portions on both side edges seal three sides, and the other end side is an opening. In a food packaging bag comprising a main body and a header portion composed of a protruding piece of each sheet protruding from the top joint portion,
One of the sheets is provided with an opening in the header portion, and an opening strip is provided on the inner surface of the one sheet from the opening to the other end side of the sheet,
One end of the unsealing strip is characterized in that it protrudes from the opening to the outer surface side of one of the sheets to serve as an unsealing tab.
 以上の如く、本発明に係る包装用シートの製造方法、包装用シート原反の製造方法及び食品用包装袋によれば、簡潔な構成及び簡潔な方法で、優れた量産性を実現することができる。 As described above, according to the method for producing a packaging sheet, the method for producing a raw packaging sheet, and the food packaging bag according to the present invention, excellent mass productivity can be realized with a simple configuration and a simple method. it can.
図1は、本発明の一実施形態に係る食品用包装袋の分解斜視図である。FIG. 1 is an exploded perspective view of a food packaging bag according to an embodiment of the present invention. 図2は、同食品用包装袋の正面図である。FIG. 2 is a front view of the packaging bag for food. 図3は、同食品用包装袋の背面図である。FIG. 3 is a rear view of the packaging bag for food. 図4(a)は、同食品用包装袋を構成する第2のシートの正面図である。図4(b)は、図4(a)の開封起点部の拡大図である。FIG. 4A is a front view of the second sheet that constitutes the food packaging bag. FIG. 4B is an enlarged view of the unsealing start point portion of FIG. 図5(a)は、同食品用包装袋により包装された食品包装体の背面側から見た斜視図である。図5(b)は、同食品包装体を開封する様子の斜視図である。FIG. 5A is a perspective view of the food package packaged in the food packaging bag as viewed from the back side. FIG. 5B is a perspective view showing how the food package is opened. 図6は、同食品用包装袋の製造工程の説明図であって、第2のシート原反に切込線を形成する工程の説明図である。FIG. 6: is explanatory drawing of the manufacturing process of the packaging bag for foodstuffs, Comprising: It is explanatory drawing of the process of forming a score line in a 2nd sheet|seat original fabric. 図7は、同食品用包装袋の製造工程の説明図であって、第2のシート原反に開封用条体を配置、接合する工程の説明図である。FIG. 7: is explanatory drawing of the manufacturing process of the packaging bag for foodstuffs, Comprising: It is explanatory drawing of the process of arrange|positioning and joining the strip for opening on a 2nd sheet original fabric. 図8(a)及び(b)は、図7の工程を実施する装置構成の説明図である。8(a) and 8(b) are explanatory views of an apparatus configuration for performing the process of FIG. 図9は、同食品用包装袋の製造工程の説明図であって、開封用条体の一端部を切込線から第2のシート原反の反対面側に突出させる工程の説明図である。FIG. 9: is explanatory drawing of the manufacturing process of the packaging bag for foodstuffs, Comprising: It is explanatory drawing of the process of making one end part of the strip for opening project from the notch line to the opposite surface side of a 2nd sheet|seat original fabric. .. 図10は、図9の反対面側から見た説明図である。FIG. 10 is an explanatory view seen from the opposite surface side of FIG. 9. 図11(a)~(c)は、図9の工程を実施する装置構成の説明図である。11(a) to 11(c) are explanatory views of an apparatus configuration for performing the process of FIG. 図12(a)~(c)は、図9の工程を実施する別の装置構成の説明図である。12A to 12C are explanatory views of another apparatus configuration for carrying out the process of FIG. 図13は、同食品用包装袋の製造工程の説明図であって、第1及び第2のシート原反から最終的に食品用包装袋が完成するまでの各工程の説明図である。FIG. 13: is explanatory drawing of the manufacturing process of the packaging bag for foodstuffs, Comprising: It is explanatory drawing of each process from the 1st and 2nd sheet|seat original fabric to the final completion of the packaging bag for foodstuffs. 図14(a)~(d)は、それぞれ別の実施形態に係る食品用包装袋の要部拡大図である。14(a) to 14(d) are enlarged views of a main part of a food packaging bag according to another embodiment. 図15(a)~(d)は、それぞれさらに別の実施形態に係る食品用包装袋の要部拡大図である。15(a) to 15(d) are enlarged views of a main part of a food packaging bag according to still another embodiment. 図16は、従来の食品用包装袋の背面図である。FIG. 16 is a rear view of a conventional food packaging bag. 図17(a)は、同食品用包装袋により包装された食品包装体の背面側から見た斜視図である。図17(b)は、同食品包装体を開封する様子の斜視図である。FIG. 17A is a perspective view of the food package packaged with the food packaging bag, as viewed from the back side. FIG. 17B is a perspective view showing how the food package is opened.
 以下、本発明に係る食品用包装袋の一実施形態として、サンドイッチの包装に用いられる食品用包装袋について、図1~図13を参酌して説明する。 Hereinafter, as one embodiment of the food packaging bag according to the present invention, a food packaging bag used for packaging a sandwich will be described with reference to FIGS. 1 to 13.
 図1~図3に示すように、本実施形態に係る食品用包装袋1は、袋本体10と、ヘッダ部15とを備える。袋本体10は、一端側よりも他端側が幅広となる形状を有する一対のシート(第1のシート2、第2のシート3)が重ね合わせられ、一端側の頂部接合部11と両側縁の側部接合部12,12により三方が封止され、他端側が開口部13となるものである。ヘッダ部15は、頂部接合部11から突出する各シート2,3の突出片が適宜の箇所で互いに接合され、一体化されるものである。なお、第1のシートは、表シートともいい、第2のシートは、裏シートともいう。 As shown in FIGS. 1 to 3, the food packaging bag 1 according to the present embodiment includes a bag body 10 and a header portion 15. The bag body 10 is formed by stacking a pair of sheets (first sheet 2 and second sheet 3) having a shape in which the other end side is wider than the one end side. Three sides are sealed by the side joints 12 and 12, and the other end becomes the opening 13. In the header portion 15, the protruding pieces of the sheets 2 and 3 protruding from the top joint portion 11 are joined to each other at appropriate places and are integrated. Note that the first sheet is also referred to as a front sheet and the second sheet is also referred to as a back sheet.
 第1のシート2は、ポリエチレンやポリプロピレン等の熱溶着性を有するプラスチックシートからなる。第1のシート2は、胴部20と、先端部21(上記突出片)とを備えて構成される。胴部20は、一端側から他端側に向かって次第に幅広となっていく形状を有する。先端部21は、胴部20の一端から延びる幅狭の形状を有する。 The first sheet 2 is made of a heat-welding plastic sheet such as polyethylene or polypropylene. The first sheet 2 is configured to include a body portion 20 and a tip portion 21 (the protruding piece). The body portion 20 has a shape that gradually widens from one end side to the other end side. The tip portion 21 has a narrow shape extending from one end of the body portion 20.
 第2のシート3も、ポリエチレンやポリプロピレン等の熱溶着性を有するプラスチックシートからなる。第2のシート3は、胴部30と、先端部31(上記突出片)とを備えて構成される。胴部30は、一端側から他端側に向かって次第に幅広となっていく形状を有する。先端部31は、胴部30の一端から延びる幅狭の形状を有する。 The second sheet 3 is also made of a heat-welding plastic sheet such as polyethylene or polypropylene. The second sheet 3 is configured to include a body portion 30 and a tip portion 31 (the protruding piece). The body portion 30 has a shape that gradually widens from one end side to the other end side. The tip portion 31 has a narrow shape extending from one end of the body portion 30.
 本実施形態においては、胴部20,30は、台形状であり、先端部21,31は、矩形状である。このため、胴部20,30の一端(及びこれに一致する先端部21,31の他端)は、シート2,3の一端側から他端側に向かう方向(以下、「長手方向」という。」に対して直交する直線状である。言い換えれば、胴部20,30の一端は、長手方向と直交する方向(以下、「幅方向」という。)と平行な直線状である。胴部20,30の両側縁は、長手方向に対して傾斜する直線状である。先端部21,31の両側縁は、長手方向と平行な直線状である。ただし、胴部20,30の両側縁の他端側は、切欠部14により欠如している。これにより、胴部20,30の他端側は、切欠部14の分だけ幅狭とされる。 In the present embodiment, the body portions 20 and 30 are trapezoidal, and the tip portions 21 and 31 are rectangular. For this reason, one end of the body portions 20 and 30 (and the other ends of the tip portions 21 and 31 corresponding thereto) are directed from one end side of the sheets 2 and 3 to the other end side (hereinafter, referred to as “longitudinal direction”). In other words, one end of each of the body portions 20 and 30 is a linear shape that is parallel to a direction orthogonal to the longitudinal direction (hereinafter referred to as “width direction”). Both side edges of the tip end portions 21 and 31 are straight lines parallel to the longitudinal direction, except that both side edges of the body portions 20 and 30 are inclined. The other end side is lacking due to the notch portion 14. As a result, the other end side of the body portions 20, 30 is narrowed by the notch portion 14.
 頂部接合部11は、胴部20,30の一端に沿って第1及び第2のシート2,3をヒートシールすることにより形成される。側部接合部12は、胴部20,30の側縁(斜辺)及び先端部21,31の側縁(縦辺)をヒートシールすることにより形成される。本実施形態においては、頂部接合部11は、ヒートシールバーを用いた溶着により形成され、長手方向に所定の幅を有する帯状シールである。側部接合部12は、溶断により形成される線シールである。具体的には、頂部接合部11は、数ミリ以上の幅を有する。側部接合部12の幅は、1mm以下である。 The top joint portion 11 is formed by heat-sealing the first and second sheets 2 and 3 along one end of the body portions 20 and 30. The side joint portion 12 is formed by heat-sealing the side edges (oblique sides) of the body portions 20 and 30 and the side edges (vertical sides) of the tip portions 21 and 31. In the present embodiment, the top joint portion 11 is a band-shaped seal formed by welding using a heat seal bar and having a predetermined width in the longitudinal direction. The side joint portion 12 is a line seal formed by fusing. Specifically, the top joint portion 11 has a width of several millimeters or more. The width of the side joint portion 12 is 1 mm or less.
 このようにして構成された袋本体10の内部が食品の収容部となる。袋本体10における第1のシート2の内面には、内シート4が貼着される。内シート4は、たとえば他端部が二箇所でポイントシール等により接合され(接合部22)、一端側が自由端となっている。これにより、収容部内で食品が動いたとしても、内シート4が食品の表面に密着し、その動きに追従する。このため、第1のシート2は汚れず、外観は損なわれない。 The inside of the bag body 10 configured as described above serves as a food container. The inner sheet 4 is attached to the inner surface of the first sheet 2 in the bag body 10. For example, the other end of the inner sheet 4 is joined at two points by a point seal or the like (joint 22), and one end is a free end. As a result, even if the food moves in the storage section, the inner sheet 4 closely adheres to the surface of the food and follows the movement. Therefore, the first sheet 2 is not soiled and the appearance is not damaged.
 図4にも示すように、ヘッダ部15における第2のシート3には、切込線32が形成される。そして、ヘッダ部15における第2のシート3には、切込線32の形成により、遊離片33が形成される。切込線32は、両端点32a,32aが頂部接合部11に接近する形状である。遊離片33は、切込線32を外形線とし、両端点32a,32a間を固定端とし、一端側を自由端とし、固定端側にて曲げると開いて開口を形成するものである。本実施形態においては、切込線32は、逆U字状に形成される。これにより、遊離片33は、幅方向に沿った一端縁33aと、長手方向に沿った左右一対の側縁33b,33bとを備え、上向きの舌片となる。 As shown in FIG. 4, a cut line 32 is formed on the second sheet 3 in the header portion 15. Then, the second sheet 3 in the header portion 15 is formed with the cut lines 32 to form the loose pieces 33. The score line 32 has a shape in which both end points 32 a and 32 a approach the top joint portion 11. The free piece 33 has the cut line 32 as an outline, a fixed end between the both end points 32a and 32a, a free end at one end, and an opening when bent at the fixed end to form an opening. In the present embodiment, the score line 32 is formed in an inverted U shape. As a result, the loose piece 33 includes one end edge 33a along the width direction and the pair of left and right side edges 33b and 33b along the longitudinal direction, and is an upward tongue piece.
 第2のシート3の内面には、遊離片33から第2のシート3の他端側にかけて、開封用条体5が設けられる。開封用条体5は、たとえば、第2のシート3の幅方向中央部にて長手方向に沿って設けられる。開封用条体5は、第2のシート3の内面に、ヒートシール、接着等により接合される(接合部34)。一例として、開封用条体5は、この内面(第2のシート3との対向面)にコート剤を塗布した上で、熱接着や自己粘着により、第2のシート3の内面に接合される。開封用条体5は、たとえば、カットテープや糸等である。本実施形態においては、開封用条体5は、幅が5mm以上、又は10mm以上の帯状のカットテープである。カットテープは、二軸延伸ポリエステル又はポリエチレンテレフタレート(PET)、ポリエチレン(PE)、ポリプロピレン(PP)、2軸延伸ポリプロピレン(OPP)等の熱溶着性を有するプラスチックシートを細くカットしたものである。 On the inner surface of the second sheet 3, a strip 5 for opening is provided from the loose piece 33 to the other end side of the second sheet 3. The strip 5 for opening is provided along the longitudinal direction, for example, at the central portion in the width direction of the second sheet 3. The strip 5 for unsealing is joined to the inner surface of the second sheet 3 by heat sealing, adhesion, or the like (joint portion 34). As an example, the strip 5 for unsealing is applied to the inner surface (the surface facing the second sheet 3) of the coating agent and then bonded to the inner surface of the second sheet 3 by thermal adhesion or self-adhesion. .. The strip 5 for opening is, for example, a cut tape or a thread. In the present embodiment, the opening strip 5 is a strip-shaped cut tape having a width of 5 mm or more, or 10 mm or more. The cut tape is obtained by finely cutting a heat-welding plastic sheet such as biaxially oriented polyester or polyethylene terephthalate (PET), polyethylene (PE), polypropylene (PP), or biaxially oriented polypropylene (OPP).
 開封用条体5の一端部5aは、第2のシート3には接合されていない。開封用条体5の一端部5aは、切込線32から第2のシート3の外面側に突出し、開封用の摘み片となる。これにより、開封用条体5の一端部5aを摘んで引き下ろすと、開封用条体5が引っ張られ、遊離片33を開封起点とし、所定の幅で第2のシート3が切断され、第2のシート3に分断開放部が形成される。開封用条体5の一端部5aの突出量は、短いと、摘まみにくい。逆に、長いと、折れやすくなり、製造装置の搬送性に支障を来す懸念がある。このため、開封用条体5の一端部5aの突出量は、5mm以上、又は10mm以上、又は15mm以上であって、25mm以下、又は20mm以下の範囲となるように、設定される。 The one end 5a of the opening strip 5 is not joined to the second sheet 3. One end 5a of the opening strip 5 projects from the cut line 32 to the outer surface side of the second sheet 3 and serves as an opening tab. As a result, when the one end portion 5a of the opening strip 5 is picked up and pulled down, the opening strip 5 is pulled, the free piece 33 is used as the opening start point, and the second sheet 3 is cut with a predetermined width. The cut open portion is formed in the sheet 3 of No. 2. If the protruding amount of the one end 5a of the unsealing strip 5 is short, it is difficult to pinch. On the contrary, if the length is long, it may be easily broken, which may hinder the transportability of the manufacturing apparatus. Therefore, the protruding amount of the one end portion 5a of the unsealing strip 5 is set to be 5 mm or more, or 10 mm or more, or 15 mm or more, and 25 mm or less, or 20 mm or less.
 図4(b)に示すように、開封用条体5は、遊離片33にも接合され、遊離片33と一体化される。しかし、開封用条体5は、遊離片33の一端縁33aまでは接合されない。このため、接合部34の一端縁34aと遊離片33の一端縁33aとの間には、幅G1の非接合部が介在する。非接合部が設けられなかったり、幅G1が小さいと、食品用包装袋1の製造装置の精度等(シート原反の蛇行等)の影響により、接合が切込線32を踏み越えてなされる懸念がある。この場合、開封用条体5の一端部5aがロックし、一端部5aを切込線32から第2のシート3の外面側に突出させることができなくなる。逆に、幅G1が大きいと、遊離片33を摘むことができるようになり、ここを摘んで開封しようとする誤開封操作がなされる懸念がある。この場合は当然、開封用条体5が使われず、第2のシート3だけが引っ張られ、適切に開封することが不可能である。このため、非接合部の幅G1は、製造誤差に対する振れ幅として、1mm以上、又は1.5mm以上であって、5mm以下、又は3mm以下、又は2mm以下の範囲となるように、設定される。 As shown in FIG. 4( b ), the unsealing strip 5 is also joined to the free piece 33 and integrated with the free piece 33. However, the opening strip 5 is not joined to the one end edge 33a of the loose piece 33. Therefore, a non-joint portion having a width G1 is interposed between the one end edge 34a of the joining portion 34 and the one end edge 33a of the loose piece 33. If the non-joint portion is not provided or the width G1 is small, there is a concern that the joining may cross over the score line 32 due to the accuracy of the manufacturing apparatus of the food packaging bag 1 and the like (meandering of the sheet material). There is. In this case, the one end 5a of the opening strip 5 is locked, and the one end 5a cannot be projected from the cut line 32 to the outer surface side of the second sheet 3. On the contrary, if the width G1 is large, the loose piece 33 can be pinched, and there is a concern that an erroneous opening operation may be performed in which the loose piece 33 is pinched and opened. In this case, of course, the strip 5 for opening is not used, and only the second sheet 3 is pulled, and it is impossible to properly open the sheet. For this reason, the width G1 of the non-bonded portion is set to be a range of 1 mm or more, or 1.5 mm or more, and 5 mm or less, or 3 mm or less, or 2 mm or less as a deflection width with respect to a manufacturing error. ..
 開封用条体5の幅は、遊離片33の固定端の幅(すなわち、切込線32の両端点32a,32a間の間隔)よりも小さい。このため、開封用条体5の各側縁5bと遊離片33の各側縁33b又は切込線32の各端点32aとの間には、幅G2の間隙部が介在する。間隙部が設けられなかったり、幅G2が小さいと、開封用条体5の一端部5aが切込線32に引っ掛かり、一端部5aを切込線32から第2のシート3の外面側に突出させることができなくなる懸念がある。また、食品用包装袋1の製造装置の精度等(貼着位置ずれ等)の影響により、開封用条体5が切込線32に引っ掛かり、しわが寄り、製品不良となる懸念がある。このため、間隙部の幅G2は、製造誤差に対する振れ幅として、1mm以上、又は1.5mm以上となるように、設定される。 The width of the strip 5 for opening is smaller than the width of the fixed end of the loose piece 33 (that is, the distance between the end points 32a and 32a of the cut line 32). Therefore, a gap portion having a width G2 is interposed between each side edge 5b of the opening strip 5 and each side edge 33b of the loose piece 33 or each end point 32a of the cut line 32. If the gap is not provided or the width G2 is small, one end 5a of the unsealing strip 5 is caught by the cut line 32, and the one end 5a projects from the cut line 32 to the outer surface side of the second sheet 3. There is a concern that it will not be possible to do so. Further, there is a concern that the opening strip 5 may be caught by the cut line 32, wrinkled, and the product may be defective due to the influence of the accuracy of the manufacturing apparatus for the food packaging bag 1 and the like (displacement of the bonding position). For this reason, the width G2 of the gap portion is set to be 1 mm or more, or 1.5 mm or more, as the deflection width for the manufacturing error.
 食品の包装に際しては、開口部13を開き、食品を袋本体10内に挿入した後、開口部13の余分なシート片(食品の底面からはみ出るシート片)を適宜折り畳み、開口部13を閉塞し、ラベル又はテープを貼着し、開口部13を封止する。これにより、図5(a)に示す食品包装体が完成する。この食品包装体において、開封用条体5の一端部5aは、遊離片33を固定端とし、一端側を自由端とし、切込線32からヘッダ部15における第2のシート3の外面側に突出する。他方、開封用条体5のその他の部分は、遊離片33から第2のシート3の内面に沿っている。 When packaging food, after opening the opening 13 and inserting the food into the bag body 10, the excess sheet pieces of the opening 13 (sheet pieces protruding from the bottom surface of the food) are appropriately folded to close the opening 13. Then, a label or tape is attached and the opening 13 is sealed. As a result, the food package shown in FIG. 5A is completed. In this food package, one end 5a of the opening strip 5 has the free piece 33 as a fixed end and one end as a free end, and extends from the cut line 32 to the outer surface side of the second sheet 3 in the header portion 15. Project. On the other hand, the other part of the strip 5 for opening is along the inner surface of the second sheet 3 from the free piece 33.
 そして、食品を食する際には、図5(b)に示すように、突出している開封用条体5の一端部5aを摘んで引き下ろす。そうすると、開封用条体5が引っ張られ、第2のシート3に分断開放部が形成され、この分断開放部から食品を取り出すことができる。なお、食品包装体において、開封用条体5の一端部5aは、ヘッダ部15の外面から若干浮いて離間し、摘まみやすくなっている。又は、ヘッダ部15を反らせることで、開封用条体5の一端部5aは、ヘッダ部15から十分に離間し、さらに摘まみやすくなる。このため、開封操作を円滑に行うことができる。 Then, when eating the food, as shown in FIG. 5(b), the protruding one end 5a of the opening strip 5 is picked and pulled down. Then, the strip 5 for opening is pulled, a division opening portion is formed in the second sheet 3, and the food can be taken out from the division opening portion. In addition, in the food package, one end 5a of the strip 5 for opening is slightly floated and separated from the outer surface of the header 15 so that it can be easily grasped. Alternatively, by bending the header portion 15, the one end portion 5a of the unsealing strip 5 is sufficiently separated from the header portion 15 and becomes easier to pinch. Therefore, the opening operation can be smoothly performed.
 本実施形態に係る食品用包装袋は、以上の構成からなり、次に、本実施形態に係る食品用包装袋の製造方法について説明する。 The food packaging bag according to the present embodiment has the above-described configuration. Next, a method for manufacturing the food packaging bag according to the present embodiment will be described.
 製造工程は、大きく分けると、図6ないし図12に示すように、開封用条体5の一端部5aが第2のシート3の外面側に突出し、開封用の摘み片となる開封手段を備える第2のシート原反3Xを製造する工程と、図13に示すように、第1のシート原反2X及び第2のシート原反3Xから食品用包装袋1を製造する工程とを備える。 The manufacturing process is roughly divided, and as shown in FIGS. 6 to 12, one end portion 5a of the unsealing strip 5 protrudes to the outer surface side of the second sheet 3 and is provided with unsealing means serving as an unsealing tab. It includes a step of manufacturing the second sheet material 3X, and a step of manufacturing the food packaging bag 1 from the first sheet material 2X and the second sheet material 3X, as shown in FIG.
 なお、台形状を有するこの種の食品包装袋1は、その形状から、シート原反2X,3Xの搬送方向に対し、横向きでかつ向きが交互に反対となるように製造される。すなわち、シート原反2X,3Xの搬送方向と交差する幅方向の一方側に開口部13が形成されるとともに、幅方向の他方側にヘッダ部15が形成される食品用包装袋1と、幅方向の他方側に開口部13が形成されるとともに、幅方向の一方側にヘッダ部15が形成される食品用包装袋1とが、交互に製造される。そこで、以下の説明及び図面においては、前者の食品用包装袋1に係る構成には、便宜上、「一方の」との語を付すとともに、符号の後に「A」を付し、また、後者の食品用包装袋1に係る構成には、「他方の」との語を付すとともに、符号の後に「B」を付す。 Note that this type of food packaging bag 1 having a trapezoidal shape is manufactured so that, due to its shape, it is lateral and alternately opposite to the conveying direction of the sheet material 2X, 3X. That is, the food packaging bag 1 in which the opening 13 is formed on one side in the width direction intersecting the transport direction of the original sheet 2X, 3X, and the header portion 15 is formed on the other side in the width direction, The packaging bag 1 for foods, in which the opening 13 is formed on the other side in the direction and the header 15 is formed on one side in the width direction, is manufactured alternately. Therefore, in the following description and drawings, the former configuration of the food packaging bag 1 will be referred to as “one” for convenience, and will be denoted by “A” after the reference numeral and the latter. To the configuration of the food packaging bag 1, the word "other" is attached, and "B" is attached after the reference numeral.
 第2のシート原反3Xを製造する工程は、本発明に係る包装用シートの製造方法及び包装用シート原反の製造方法の一実施形態である。同工程は、i)図6に示すように、第2のシート原反3Xに切込線32を形成する工程、より詳しくは、第2のシート原反3Xに、切込線32を形成するとともに、切込線32の形成により、遊離片33を形成する工程(第1工程)、ii)図7及び図8に示すように、第2のシート原反3Xの内面に、開封用条体5の一端部5aよりも内側の部分が遊離片33上に重なるように、開封用条体5を配置し、遊離片33から開封用条体5の他端側の所定範囲で、開封用条体5を第2のシート原反3Xの内面に接合する工程(第2工程)、iii)図9ないし図12に示すように、遊離片33に向けて外力を加えることにより、より詳しくは、遊離片33における開封用条体5の部分に向けて外力を加えることにより、開封用条体5の一端部5aを、遊離片33が形成する開口を介して第2のシート原反3Xの反対面(外面)側に移動させ、切込線32から第2のシート原反3Xの反対面側に突出させる工程(第3工程)、からなる。 The step of producing the second sheet material 3X is an embodiment of the method for producing a packaging sheet and the method for producing a packaging sheet material according to the present invention. This step is i) a step of forming a cut line 32 on the second sheet material 3X, more specifically, forming a cut line 32 on the second sheet material 3X, as shown in FIG. At the same time, the step (first step) of forming the free piece 33 by forming the cut line 32, ii) As shown in FIGS. 7 and 8, the opening strip is formed on the inner surface of the second sheet material 3X. 5, the opening strip 5 is arranged so that the portion inside the one end 5a of the sheet 5 overlaps the free strip 33, and the strip 5 is opened within a predetermined range from the free strip 33 to the other end of the strip 5. A step of joining the body 5 to the inner surface of the second sheet material 3X (second step), iii) As shown in FIGS. 9 to 12, by applying an external force toward the loose piece 33, more specifically, By applying an external force toward the part of the strip for opening 5 in the loose piece 33, the one end 5a of the strip for opening 5 is made to oppose the second sheet material 3X through the opening formed by the strip 33. The step (third step) of moving to the surface (outer surface) side and projecting from the score line 32 to the opposite surface side of the second sheet material 3X (third step).
 第1の工程では、第2のシート原反3Xが間欠的に搬送される。そして、搬送経路上に配置された、一方の切込線32A用の切込機構(図示せず)と、他方の切込線32B用の切込機構(図示せず)とが、第2のシート原反3Xの間欠搬送に同期して作動することにより、図6に示すように、一方の切込線32Aと他方の切込線32Bとがそれぞれ形成される。 In the first step, the second sheet material 3X is intermittently conveyed. Then, the cutting mechanism (not shown) for the one cutting line 32A and the cutting mechanism (not shown) for the other cutting line 32B, which are arranged on the transport path, are the second cutting mechanism. By operating in synchronization with the intermittent feeding of the original sheet 3X, one cutting line 32A and the other cutting line 32B are respectively formed as shown in FIG.
 切込機構は、一例として、受けローラと工具とを備える。この切込機構は、工具を受けローラに往復動させ、工具の表面に設けられたノッチ刃を受けローラに当接させることにより、第2のシート原反3Xに切込線32を形成する。ただし、切込機構は、かかる構成に限定されるものではない。切込機構は、第2のシート原反3Xに切込線32を形成することができるものであれば、他の構成からなる機構であってもよい。 The cutting mechanism includes, as an example, a receiving roller and a tool. The cutting mechanism reciprocates the receiving roller to make the notch blade provided on the surface of the tool come into contact with the receiving roller, thereby forming the cutting line 32 on the second original sheet 3X. However, the cutting mechanism is not limited to such a configuration. The cutting mechanism may be a mechanism having another configuration as long as the cutting line 32 can be formed on the second original sheet 3X.
 第2の工程では、第2のシート原反3Xが間欠的に搬送される。そして、図7及び図8に示すように、搬送経路上に配置された、一方の開封用条体5A用の切断・搬送・接合機構100,101と、他方の開封用条体5B用の切断・搬送・接合機構100,101とが、第2のシート原反3Xの間欠搬送に同期して作動することにより、一方の開封用条体5Aと他方の開封用条体5Bとがそれぞれ、開封用条体のシート原反5Xから分離され、搬送され、第2のシート原反3Xの内面に配置され、接合(接合部34A,34B)される。 In the second step, the second sheet material 3X is intermittently conveyed. Then, as shown in FIGS. 7 and 8, the cutting/conveying/joining mechanisms 100 and 101 for one opening strip 5A and the cutting for the other opening strip 5B arranged on the transport path. The transfer/joining mechanisms 100 and 101 operate in synchronization with the intermittent transfer of the second sheet material 3X, so that one opening strip 5A and the other opening strip 5B are opened. It is separated from the raw sheet 5X of the strip body, conveyed, arranged on the inner surface of the second raw sheet 3X, and joined (joined portions 34A, 34B).
 切断機構100は、一例として、一対の切断刃を備える。この切断機構100は、ロール体からシート原反2X,3Xの搬送方向に沿って繰り出された開封用条体のシート原反5Xを所定幅で切断し、開封用条体5を形成する。ただし、切断機構は、かかる構成に限定されるものではない。切断機構は、所定幅の開封用条体5を形成することができるものであれば、他の構成からなる機構であってもよい。 The cutting mechanism 100 includes, for example, a pair of cutting blades. The cutting mechanism 100 cuts the sheet raw fabric 5X of the unfolding strip fed out from the roll body along the transport direction of the sheet original fabrics 2X, 3X with a predetermined width to form the unsealing strip 5. However, the cutting mechanism is not limited to this configuration. The cutting mechanism may be a mechanism having another structure as long as it can form the opening strip 5 having a predetermined width.
 搬送・接合機構101は、一例として、保持バー102と、接合バー103とを備える。保持バー102は、開封用条体5を長手方向に沿って吸引することにより保持し、開封用条体5を切断位置から第2のシート原反3Xへの配置位置へと搬送するものである。接合バー103は、開封用条体5の、第2のシート原反3Xへの配置位置において、第2のシート原反3Xの反対面側に配置されるものである。接合バー103は、たとえば、ヒートシールバーである。この搬送・接合機構101は、切断により形成された開封用条体5を、保持バー102で保持し、保持バー102の移動(図8の例では、昇降)により搬送し、第2のシート原反3Xの内面に配置し、しかる後、保持バー102と接合バー103とで第2のシート原反3X及びこの内面に配置された開封用条体5を挟んでヒートシールすることにより、接合部34を形成する。 The transport/joining mechanism 101 includes, for example, a holding bar 102 and a joining bar 103. The holding bar 102 holds the opening strip 5 by sucking it along the longitudinal direction, and conveys the opening strip 5 from the cutting position to the arrangement position on the second sheet material 3X. .. The joining bar 103 is arranged on the opposite side of the second sheet material 3X at the arrangement position of the unsealing strip 5 on the second sheet material 3X. The joining bar 103 is, for example, a heat seal bar. The transporting/bonding mechanism 101 holds the strip 5 for opening formed by cutting with a holding bar 102, and transports it by moving the holding bar 102 (elevating in the example of FIG. 8) to obtain a second sheet original. It is arranged on the inner surface of the opposite side 3X, and thereafter, the holding bar 102 and the joining bar 103 sandwich the second sheet material 3X and the unsealing strip 5 arranged on the inner side and heat-seal the joined portion. 34 is formed.
 ここで、接合バー103は、一端側が保持バー102よりも短くなっている。このため、保持バー102で保持されるが、接合バー103との間に挟まれない開封用条体5の部分は、第2のシート原反3Xに接合されず、一端部5a及び一端部5aに隣接する非接合部となる。 Here, one end of the joining bar 103 is shorter than the holding bar 102. Therefore, the portion of the opening strip 5 that is held by the holding bar 102 but is not sandwiched between the holding bar 102 and the second bar 3X is not joined to the one end portion 5a and the one end portion 5a. Will be a non-bonded portion adjacent to.
 ただし、搬送・接合機構は、これらの構成に限定されるものではない。搬送・接合機構は、開封用条体5を、一端部5a及び非接合部を残しつつ、第2のシート原反3Xの内面に接合することができるもの、すなわち、遊離片33から開封用条体5の他端側の所定範囲で、開封用条体5を第2のシート原反3Xの内面に接合することができるものであれば、他の構成からなる機構であってもよい。 However, the transport/joining mechanism is not limited to these configurations. The transporting/joining mechanism is capable of joining the unsealing strip 5 to the inner surface of the second sheet material 3X while leaving the one end 5a and the non-joining portion, that is, the unsealing strip from the loose piece 33. A mechanism having another configuration may be used as long as the opening strip 5 can be joined to the inner surface of the second original sheet 3X within a predetermined range on the other end side of the body 5.
 第3の工程では、第2のシート原反3Xが間欠的に搬送される。そして、図9~図12に示すように、搬送経路上に配置された、一方の開封用条体5A用の外力付加機構104,105と、他方の開封用条体5B用の外力付加機構104,105とが、第2のシート原反3Xの間欠搬送に同期して作動することにより、一方の開封用条体5Aの一端部5aと他方の開封用条体5Bの一端部5aとがそれぞれ、第2のシート原反3Xの反対面側に押し出される。 In the third step, the second sheet material 3X is intermittently conveyed. Then, as shown in FIGS. 9 to 12, the external force applying mechanisms 104 and 105 for the one opening strip 5A and the other external force adding mechanism 104 for the other opening strip 5B, which are arranged on the transport path. , 105 are operated in synchronism with the intermittent conveyance of the second original sheet 3X, so that one end 5a of one opening strip 5A and one end 5a of the other opening strip 5B are respectively , And is extruded to the opposite side of the second original sheet 3X.
 外力付加機構は、一例として、エアノズル104(図11)を備える。この外力付加機構は、遊離片33及び遊離片33における開封用条体5の部分に向けてエアを吹き付けることにより、遊離片33を曲げて開口を形成し、この開口を介して開封用条体5の一端部5aを第2のシート原反3Xの反対面側に移動させる。又は、外力付加機構は、一例として、昇降動作するロッド105(図12)を備える。この外力付加機構は、遊離片33及び遊離片33における開封用条体5の部分にロッド105の先端を当て、さらにロッド105を押し込むことにより、遊離片33を曲げて開口を形成し、この開口を介して開封用条体5の一端部5aを第2のシート原反3Xの反対面側に移動させる。 The external force applying mechanism includes, for example, an air nozzle 104 (FIG. 11). This external force applying mechanism bends the loose piece 33 to form an opening by blowing air toward the loose piece 33 and a portion of the loose piece 33 in the loose piece 33, and the strip for opening is opened through this opening. The one end 5a of the sheet 5 is moved to the opposite side of the second original sheet 3X. Alternatively, the external force applying mechanism includes, for example, the rod 105 (FIG. 12) that moves up and down. This external force applying mechanism applies the tip of the rod 105 to the free piece 33 and the portion of the opening strip 5 in the free piece 33, and further pushes the rod 105 to bend the free piece 33 to form an opening. The one end portion 5a of the unsealing strip 5 is moved to the opposite surface side of the second original sheet 3X via.
 ただし、外力付加機構は、これらの構成に限定されるものではない。外力付加機構は、開封用条体5の一端部5aを第2のシート原反3Xの反対面側に移動させることができるものであれば、他の構成からなる機構であってもよい。たとえば、第2のシート原反3Xの反対面側に、吸引機構又は吸着機構を配置し、反対面側から遊離片33を吸引又は吸着し、開封用条体5の一端部5aを第2のシート原反3Xの反対面側に移動させるようにしてもよい。 However, the external force adding mechanism is not limited to these configurations. The external force applying mechanism may be a mechanism having another structure as long as it can move the one end portion 5a of the opening strip 5 to the opposite surface side of the second sheet material 3X. For example, a suction mechanism or a suction mechanism is arranged on the opposite surface side of the second sheet material 3X, and the loose piece 33 is sucked or adsorbed from the opposite surface side, and the one end 5a of the opening strip 5 is moved to the second side. Alternatively, the sheet may be moved to the opposite side of the original sheet 3X.
 第2のシート原反3Xは、以上のようにして製造される。そして、第2のシート原反3Xは、一旦ロール状に巻回された後、製袋装置にセットされる。又は、第2のシート原反3Xは、製袋装置によって製造されることで、引き続き搬送され、次に、第1のシート原反2X及び第2のシート原反3Xから食品用包装袋1を製造する工程に移行する。 The second original sheet 3X is manufactured as described above. Then, the second original sheet 3X is once wound into a roll and then set in the bag making apparatus. Alternatively, the second sheet material 3X is continuously conveyed by being manufactured by the bag making device, and then the food packaging bag 1 is formed from the first sheet material 2X and the second sheet material 3X. Move to manufacturing process.
 食品用包装袋1を製造する工程は、たとえば特開2005-219319号公報に記載されたとおりであり、従来から用いられている方法である。このため、ここでは、多くを説明しない。同工程は、図13に示すように、第1のシート原反2Xと第2のシート原反3Xを内面同士が対向するように重ね合わせ、この状態で間欠的に搬送しつつ、iv)頂部接合部11を形成する工程、v)側部接合部12を形成しつつ、食品用包装袋1を個別に分離する工程、vi)切欠部14を形成する工程、からなる。これらの工程を経て、食品用包装袋1が完成する。なお、第1のシート原反2Xの内面に内シート4を接合する工程は、図示していないが、第1のシート原反2Xと第2のシート原反3Xを重ね合わせる前に行われる。 The process for manufacturing the food packaging bag 1 is as described in, for example, Japanese Patent Laid-Open No. 2005-219319, and is a method that has been conventionally used. Therefore, much will not be described here. In the same process, as shown in FIG. 13, the first original sheet 2X and the second original sheet 3X are overlapped so that the inner surfaces thereof face each other, and intermittently conveyed in this state, iv) the top portion The process includes the steps of forming the joint portion 11, v) separating the food packaging bag 1 individually while forming the side joint portion 12, and vi) forming the cutout portion 14. The food packaging bag 1 is completed through these steps. Although not shown, the step of joining the inner sheet 4 to the inner surface of the first original sheet 2X is performed before the first original sheet 2X and the second original sheet 3X are superposed on each other.
 このように、本実施形態に係る、開封用条体5の一端部5aが第2のシート3の外面側に突出し、開封用の摘み片となる開封手段を備える第2のシート原反3Xを製造する方法によれば、簡潔な構成及び簡潔な方法で、優れた量産性を実現することができる。 As described above, the second sheet material 3X according to the present embodiment is provided with the unsealing means in which the one end portion 5a of the unsealing strip 5 projects to the outer surface side of the second sheet 3 and serves as the unsealing tab. According to the manufacturing method, excellent mass productivity can be realized with a simple configuration and a simple method.
 また、開封用条体5の一端部5aが延びる方向と、遊離片33が延びる方向とが一致している(両方とも上に凸となる)。このため、開封用条体5の一端部5aを小さい力で確実に第2のシート原反3Xの反対面側に移動させることができる。 Also, the direction in which the one end 5a of the opening strip 5 extends and the direction in which the loose piece 33 extends (both are convex upward). Therefore, the one end portion 5a of the unsealing strip 5 can be reliably moved to the opposite surface side of the second sheet material 3X with a small force.
 なお、本発明は、上記実施形態に限定されるものではない。本発明は、本発明の要旨を逸脱しない範囲で種々の変更が可能である。 The present invention is not limited to the above embodiment. The present invention can be variously modified without departing from the scope of the present invention.
 切込線及び遊離片の形状や構造は、上記実施形態のものに限定されない。たとえば、切込線及び遊離片の形状や構造は、図14及び図15に示すものであってもよい。 The shape and structure of the score line and the loose piece are not limited to those in the above embodiment. For example, the shape and structure of the score line and the loose piece may be those shown in FIGS. 14 and 15.
 図14(a)に示すものは、開封用条体5の一端部5aに、周辺領域から識別可能な表示部50を施したものである。通常、開封用条体5は透明である。このため、一端部5aはそのままであれば目立ちにくい。商品購入者によっては、そこが開封用の摘み片であることが認識しづらいことも考えられる。そこで、開封用条体5の一端部5aに表示部50を印刷等して施すことで、どの商品購入者であっても、容易に開封用の摘み片であることを認識することができる。 As shown in FIG. 14(a), one end 5a of the unsealing strip 5 is provided with a display section 50 that can be identified from the peripheral area. Usually, the strip 5 for opening is transparent. For this reason, if the one end 5a is left as it is, it is less noticeable. It may be difficult for some purchasers to recognize that it is a pick for opening. Therefore, by printing the display portion 50 on the one end portion 5a of the opening strip 5, any purchaser of the product can easily recognize that the opening strip is the opening tab.
 表示部としては、開封用の摘み片であることを示す情報からなる表示部50に加えて、又は表示部50の代わりに、図14(b)に示す、周辺領域から識別可能な単なる色彩や模様等からなる表示部51であってもよい。 As the display unit, in addition to or in place of the display unit 50 including the information indicating that it is a pick for opening, a simple color identifiable from the peripheral area, as shown in FIG. The display unit 51 may be a pattern or the like.
 図14(c)に示すものは、π字状の切込線32、すなわち、長手方向と交差する幅方向に沿った線(横線)32bと、線32bの両端点よりも内側の位置から長手方向に沿って延びる左右の線(縦線)32c,32cとで構成される切込線32が形成されたものである。かかる構成によれば、開封用条体5の一端部5aを持って縦方向(長手方向)に開封した後、ヘッダ部15には、幅方向外方に向く切込線32d,32dが形成される。このため、開封後の残りの第2のシート3を左右に開いて分断開放部を大きくすることができ、食品を取り出しやすくすることができる。 FIG. 14C shows a π-shaped cut line 32, that is, a line (horizontal line) 32b along the width direction that intersects the longitudinal direction, and a length from a position inside the end points of the line 32b. The cut line 32 is formed by left and right lines (vertical lines) 32c, 32c extending along the direction. According to such a configuration, after opening the strip 5 in the longitudinal direction (longitudinal direction) by holding the one end 5a, the header portion 15 is formed with the cut lines 32d, 32d facing outward in the width direction. It Therefore, the remaining second sheet 3 after opening can be opened to the left and right to enlarge the division opening portion, and the food can be easily taken out.
 図14(d)に示すものは、それぞれが斜めの二本の切込線32e、32eが交差して構成されるX字状の切込線32が形成されたものである。かかる構成によっても、開封後、ヘッダ部15には、幅方向外方に向く切込線32f,32fが形成される。このため、開封後の残りの第2のシート3を左右に開いてワイドオープンにすることができる。 The one shown in FIG. 14(d) has an X-shaped cut line 32 formed by intersecting two diagonal cut lines 32e, 32e. Even with this configuration, the cut lines 32f and 32f facing outward in the width direction are formed in the header portion 15 after opening. Therefore, the remaining second sheet 3 after opening can be opened left and right to be wide open.
 図15(a)に示すものは、H字状の切込線32、すなわち、長手方向と交差する幅方向に沿った線(横線)32gと、線32gの両端点から長手方向両方向に沿って延びる左右の線(縦線)32h,32hとで構成される切込線32が形成されたものである。かかる構成によれば、上向きの遊離片33に加え、この遊離片33と対向するようにして下向きの遊離片35も形成することができる。 FIG. 15A shows an H-shaped cut line 32, that is, a line (horizontal line) 32g along the width direction intersecting the longitudinal direction, and from both end points of the line 32g along both longitudinal directions. A cut line 32 is formed by extending left and right lines (vertical lines) 32h, 32h. According to such a configuration, in addition to the upward free piece 33, the downward free piece 35 can be formed so as to face the free piece 33.
 図15(b)に示すものは、下向きの切込線32、すなわち、開封用条体5の一端部5aが延びる方向と、遊離片35が延びる方向とが逆となるような切込線32が形成されたものである。 FIG. 15(b) shows a downward cut line 32, that is, a cut line 32 in which the direction in which the one end 5a of the opening strip 5 extends and the direction in which the loose piece 35 extends are opposite. Is formed.
 また、切込線は、長手方向と交差する幅方向に沿った線(横線)や、幅方向に対して傾斜する線等の直線又は多少湾曲した線であってもよい。 Also, the cut line may be a straight line or a slightly curved line such as a line (horizontal line) along the width direction that intersects the longitudinal direction or a line inclined with respect to the width direction.
 また、開封用条体5の一端部5aを第2のシート3の反対面側に移動させることを可能とするための構造として、切込線32及び遊離片33の組み合わせではなく、図15(c)に示すように、開口36であってもよい。開口36であっても、開封用条体5の一端部5aを第2のシート3の反対面側に移動させるための装置及び方法は、上記したものと基本的には同じである。 Further, as a structure for making it possible to move the one end portion 5a of the unsealing strip 5 to the opposite surface side of the second sheet 3, not the combination of the cut line 32 and the loose piece 33, but FIG. As shown in c), it may be an opening 36. Even with the opening 36, the device and method for moving the one end 5a of the unsealing strip 5 to the opposite surface side of the second sheet 3 are basically the same as those described above.
 また、第2のシート3と開封用条体5との接合部34は、図15(d)に示すように、中心が一致するように形成してもよい。また、接合部は、開封用条体5の幅方向全域に形成してもよい。また、接合部は、開封用条体5の幅方向両側縁部だけに形成してもよい。また、接合部は、開封用条体5の他端にまで形成されることは必須ではない。要は、開封用条体5が第2のシート3から剥離するようなことがなければそれでよい。 Further, the joint portion 34 between the second sheet 3 and the unsealing strip 5 may be formed so that the centers thereof coincide with each other, as shown in FIG. 15(d). Moreover, you may form a junction part in the width direction whole area of the strip 5 for opening. Moreover, you may form a joining part only in the width direction both-sides edge part of the strip 5 for opening. Moreover, it is not essential that the joint portion is formed up to the other end of the strip 5 for opening. In short, it is sufficient if the strip 5 for opening does not peel off from the second sheet 3.
 また、接合部は、長手方向に沿って連続的に形成されるものに限定されない。たとえば、接合部は、遊離片33における箇所を含め、適宜の箇所に施したポイントシールからなるものであってもよい。 Also, the joint portion is not limited to one formed continuously along the longitudinal direction. For example, the joining portion may be formed of a point seal provided at an appropriate place including the place on the loose piece 33.
 また、切込線は、全切線に限定されない。切込線は、外力付加機構によって外力が加えられると、破断するものであればよい。たとえば、切込線は、半切線(ハーフカット)やミシン目であってもよい。 Also, the score line is not limited to the full score line. The cut line may be one that breaks when an external force is applied by the external force applying mechanism. For example, the cut line may be a half cut line or a perforation.
 また、開封用条体は、一つの部材からなるものに限定されない。たとえば、開封用条体は、別体である本体部と一端部とを一体に接合したものであってもよい。 Also, the strip for opening is not limited to one made of one member. For example, the unsealing strip may be formed by integrally joining the body and the one end, which are separate bodies.
 また、開封手段は、第2のシート3ではなく、第1のシート2に設けるようにしてもよい。 Also, the opening means may be provided not on the second sheet 3 but on the first sheet 2.
 また、「台形状」、「長方形状」、「矩形状」、「直線」、「中央部」、「端部」、「側部」、「一致」、「平行」といった形状、部位又は状態を表す用語は、本発明において、そのもののほか、それに近い、又は、類する、という意味の「略」の概念も含むものである。 In addition, shapes, parts or states such as “trapezoidal”, “rectangular”, “rectangular”, “straight line”, “center part”, “end part”, “side part”, “match”, “parallel” The term used in the present invention includes not only the term itself but also the concept of “abbreviation” which means that it is close to or similar to the term.
 また、包装対象の食品は、サンドイッチに限定されない。食品は、食品用包装袋に収容できる形であればよい。たとえば、食品は、パン、ケーキ、おにぎり等の米飯加工食品等であってもよい。このように、食品の種類は限定されない。 Also, the food to be packaged is not limited to sandwiches. The food may be in a form that can be stored in a food packaging bag. For example, the food may be cooked rice food such as bread, cakes, and rice balls. Thus, the type of food is not limited.
 また、本発明に係る包装用シートの製造方法も、上記実施形態に限定されるものではない。本発明は、本発明の要旨を逸脱しない範囲で種々の変更が可能である。 Also, the method of manufacturing the packaging sheet according to the present invention is not limited to the above embodiment. The present invention can be variously modified without departing from the scope of the present invention.
 包装用シートは、特定の包装形態に用いるものに限定されない。包装用シートは、おにぎりと海苔シートを分離した状態で包装する食品用包装材における外側シートや、ピロー包装用シートや、平袋、ガゼット袋等の一般的な袋に用いられるシート等、各種の包装形態に用いられる全てのものを対象とする。 The packaging sheet is not limited to the one used for a specific packaging form. The packaging sheet includes various types of sheets such as outer sheets in food packaging materials in which rice balls and seaweed sheets are separated, pillow packaging sheets, and sheets used for general bags such as flat bags and gusset bags. It covers all items used in packaging.
 また、包装対象は、食品に限定されない。包装対象は、食品以外の被包装物であってもよい。 Also, the packaging target is not limited to food. The packaging target may be an article to be packaged other than food.
 また、包装用シートは、複数が連続した長尺状に限定されない。たとえば、包装用シートは、単数の枚葉状であってもよい。 Also, the packaging sheet is not limited to a continuous long sheet. For example, the packaging sheet may be in the form of a single sheet.
 また、包装用シートは、単一のプラスチックシートからなるものに限定されない。たとえば、包装用シートは、紙又は紙質シート等、その他の材質のシートであってもよい。また、包装用シートは、たとえば、二枚のシートを端部同士を接合して一枚のシートにしたものや、三枚のシートを順次端部同士を接合して一枚のシートにしたもののように、複数枚のシートを用いて一枚のシートに形成したものであってもよい。また、この場合、各シートの材質は、異なるものであってもよい。たとえば、一部のシートには、プラスチックシートではなく、紙又は紙質シートを用いるようにしてもよい。 Also, the packaging sheet is not limited to a single plastic sheet. For example, the packaging sheet may be a sheet made of other material such as paper or paper sheet. Further, the packaging sheet includes, for example, two sheets which are joined together at their end portions into one sheet, or three sheets which are successively joined together at their end portions into one sheet. Thus, a plurality of sheets may be used to form one sheet. Further, in this case, the material of each sheet may be different. For example, some sheets may be paper or paper quality sheets instead of plastic sheets.
 1,1A,1B…食品用包装袋、10…袋本体、11,11A,11B…頂部接合部、12,12A,12B…側部接合部、13…開口部、14,14A…切欠部、15…ヘッダ部、2…第1のシート(表シート)、2X…第1のシート原反、20…胴部、21…先端部、22…接合部、3…第2のシート(裏シート)、3X…第2のシート原反、30…胴部、31…先端部、32,32A,32B…切込線、32a…端点、32b~32h…切込線、33,33A,33B…遊離片、33a…一端縁、33b…側縁、34,34A,34B…接合部、34a…一端縁、35…遊離片、36…開口、4…内シート、5,5A,5B…開封用条体、5X…開封用条体のシート原反、5a…一端部(摘み片)、5b…側縁、50…表示部、51…表示部、100…切断機構、101…搬送・接合機構、102…保持バー、103…接合バー、104…エアノズル(外力付加機構)、105…ロッド(外力付加機構)、L1…開封用条体5及び遊離片33の幅方向の中心線、L2…接合部34の幅方向の中心線、G1…接合部34の一端縁34aと遊離片33の一端縁33aとの間隔(非接合部の幅)、G2…開封用条体5の側縁5bと切込線32の端点32aとの間隔(間隙部の幅)、S1…中心線L1と中心線L2とのずれ量 1, 1A, 1B... Food packaging bag, 10... Bag body, 11, 11A, 11B... Top joint part, 12, 12A, 12B... Side joint part, 13... Opening part, 14, 14A... Notch part, 15 ... header section, 2... first sheet (front sheet), 2X... first sheet material, 20... body section, 21... tip section, 22... joining section, 3... second sheet (back sheet), 3X... Second sheet material, 30... Body part, 31... Tip part, 32, 32A, 32B... Cut line, 32a... End point, 32b to 32h... Cut line, 33, 33A, 33B... Free piece, 33a... One edge, 33b... Side edge, 34, 34A, 34B... Joining part, 34a... One edge, 35... Free piece, 36... Opening, 4... Inner sheet, 5, 5A, 5B... Strip for opening 5X ... Raw sheet material for opening strip 5a ... One end (pick) 5b ... Side edge, 50 ... Display section, 51 ... Display section, 100 ... Cutting mechanism, 101 ... Conveying/joining mechanism, 102 ... Holding bar , 103... Joining bar, 104... Air nozzle (external force applying mechanism), 105... Rod (external force applying mechanism), L1... Center line in the width direction of the opening strip 5 and the loose piece 33, L2... Width direction of the joining portion 34 , The gap between the one end edge 34a of the joint portion 34 and the one end edge 33a of the loose piece 33 (the width of the non-joint portion), G2... The side edge 5b of the opening strip 5 and the end points of the cut line 32. 32a, gap (width of gap), S1... Deviation amount between center line L1 and center line L2

Claims (13)

  1.  シートの一面に、所定方向に延びる開封用条体を備える包装用シートの製造方法において、
     シートに、切込線を形成するとともに、切込線の形成により、曲げると開いて開口を形成する遊離片を形成する工程と、
     シートの一面に、開封用条体の一端部よりも内側の部分が遊離片上に重なるように、開封用条体を配置し、遊離片から開封用条体の他端側の所定範囲で、開封用条体をシートの一面に接合する工程と、
     遊離片に向けて外力を加えることにより、開封用条体の一端部を、遊離片が形成する開口を介してシートの他面側に移動させ、切込線からシートの他面側に突出させる工程とを備える
     ことを特徴とする包装用シートの製造方法。
    On one surface of the sheet, in a method for manufacturing a packaging sheet comprising an opening strip extending in a predetermined direction,
    Forming a score line on the sheet, and forming a cut line to form a free piece that opens to form an opening when bent;
    On one surface of the sheet, arrange the strip for opening so that the part inside one end of the strip for opening overlaps on the loose piece, and open the strip in a predetermined range from the loose piece to the other end side of the strip for opening. A step of joining the strip to one surface of the sheet,
    By applying an external force toward the loose piece, one end of the opening strip is moved to the other surface side of the sheet through the opening formed by the loose piece, and is projected from the cut line to the other surface side of the sheet. A method for manufacturing a packaging sheet, comprising:
  2.  シート原反を長手方向に搬送しながら、シート原反の一面に、開封用条体を所定間隔で貼り付けていく包装用シート原反の製造方法において、
     切断機構により、シート原反に、切込線を形成するとともに、切込線の形成により、曲げると開いて開口を形成する遊離片を形成する工程と、
     切断機構よりもシート原反の搬送方向の下流側に位置する搬送・接合機構により、シート原反の一面に、開封用条体の一端部よりも内側の部分が遊離片上に重なるように、開封用条体を配置し、遊離片から開封用条体の他端側の所定範囲で、開封用条体をシート原反の一面に接合する工程と、
     搬送・接合機構よりもシート原反の搬送方向の下流側に位置する外力付加機構により、遊離片に向けて外力を加えることにより、開封用条体の一端部を、遊離片が形成する開口を介してシート原反の他面側に移動させ、切込線からシート原反の他面側に突出させる工程とを備える
     ことを特徴とする包装用シート原反の製造方法。
    While transporting the sheet material in the longitudinal direction, on one surface of the sheet material, a method for producing a packaging sheet material in which opening strips are attached at predetermined intervals,
    A step of forming a score line on the original sheet by the cutting mechanism, and forming a free piece that opens by bending to form an opening by forming the score line;
    The transport/joining mechanism, which is located on the downstream side of the sheet material in the transport direction of the cutting mechanism, opens the one side of the sheet material so that the part inside the one end of the unsealing strip overlaps the loose piece. A step of arranging the strip, and joining the strip for opening to one surface of the original sheet in a predetermined range from the free piece to the other end side of the strip for opening,
    An external force applying mechanism located on the downstream side of the sheet material in the conveying direction from the conveying/joining mechanism applies an external force toward the loose piece, so that one end of the opening strip is opened by the loose piece. And a step of causing the sheet to move to the other side of the sheet and project from the score line to the other side of the sheet, the method for producing the original sheet for packaging.
  3.  外力付加機構は、遊離片に向けてエアノズルからエアを吹き付ける機構、遊離片にロッドの先端を当て、ロッドを押し込む機構、遊離片を吸着又は吸引する機構、のいずれかである
     請求項2に記載の包装用シート原反の製造方法。
    The external force applying mechanism is any one of a mechanism that blows air from an air nozzle toward the loose piece, a mechanism that pushes the rod tip against the loose piece and pushes the rod, and a mechanism that sucks or sucks the loose piece. For manufacturing a raw sheet for packaging.
  4.  接合工程は、接合部の一端縁と切込線との間に所定幅の非接合部が形成されるように、開封用条体と遊離片とを接合することを含む
     請求項2に記載の包装用シート原反の製造方法。
    The joining step includes joining the strip for opening and the loose piece so that a non-joined portion having a predetermined width is formed between one end edge of the joined portion and the cut line. Manufacturing method of packaging sheet stock.
  5.  接合工程は、開封用条体の幅方向の中心からずれた部位を開封用条体の長手方向に沿って接合することを含む
     請求項2~請求項4のいずれか一項に記載の包装用シート原反の製造方法。
    The packaging step according to any one of claims 2 to 4, wherein the joining step includes joining a portion deviated from the center of the opening strip in the width direction along the longitudinal direction of the opening strip. Method for manufacturing sheet material.
  6.  一端側よりも他端側が幅広となる形状を有する一対のシートが重ね合わせられ、一端側の頂部接合部と両側縁の側部接合部により三方が封止され、他端側が開口部となる袋本体と、頂部接合部から突出する各シートの突出片で構成されるヘッダ部とを備える食品用包装袋において、
     一方のシートは、ヘッダ部に、切込線の形成により形成される遊離片であって、曲げると開いて開口を形成する遊離片を備えるとともに、一方のシートの内面に、遊離片からシートの他端側にかけて開封用条体を備え、
     開封用条体の一端部は、切込線から一方のシートの外面側に突出して開封用の摘み片となる
     ことを特徴とする食品用包装袋。
    A pair of sheets having a shape in which the other end side is wider than the one end side are overlapped, and the top joint part on one end side and the side part joint parts on both sides seal three sides, and the other end side is an opening. In a food packaging bag comprising a main body and a header portion composed of a protruding piece of each sheet protruding from the top joint portion,
    One of the sheets is a free piece formed by forming a score line in the header part, and includes a free piece that opens when bent to form an opening, and the inner surface of one sheet is provided with the free piece from the free piece. Equipped with a strip for opening to the other end,
    A packaging bag for foods, wherein one end of the strip for opening is projected from the score line to the outer surface side of one sheet to form a tab for opening.
  7.  切込線は、両端点が頂部接合部に接近する形状を有し、
     これにより、遊離片は、切込線の両端点間を固定端とし、頂部接合部から離間する一端側を自由端とする形状を有する
     請求項6に記載の食品用包装袋。
    The score line has a shape in which both end points approach the top joint,
    Thereby, the loose piece has a shape in which a space between both end points of the score line is a fixed end, and one end side separated from the top joint is a free end.
  8.  開封用条体は、一方のシートの内面に、遊離片から開封用条体の他端側の所定範囲で接合され、
     接合部の一端縁と切込線との間に、所定幅の非接合部が介在する
     請求項7に記載の食品用包装袋。
    The strip for opening is joined to the inner surface of one sheet in a predetermined range from the free piece to the other end side of the strip for opening,
    The food packaging bag according to claim 7, wherein a non-joint portion having a predetermined width is interposed between one end edge of the joint portion and the score line.
  9.  開封用条体の幅は、切込線の両端点間の間隔よりも小さく、
     これにより、開封用条体の各側縁と切込線の各端点との間に、所定幅の間隙部が介在する
     請求項7又は請求項8に記載の食品用包装袋。
    The width of the strip for opening is smaller than the space between the two end points of the score line,
    Thus, the food packaging bag according to claim 7 or 8, wherein a gap having a predetermined width is provided between each side edge of the unsealing strip and each end point of the score line.
  10.  開封用条体の一端部は、この一端部の周辺領域から識別可能な表示部を備える
     請求項6に記載の食品用包装袋。
    The food packaging bag according to claim 6, wherein one end of the unsealing strip is provided with a display portion that can be identified from a peripheral region of the one end.
  11.  シートの一面に、所定方向に延びる開封用条体を備える包装用シートの製造方法において、
     シートに切込線を形成する工程と、
     シートの一面に、開封用条体の一端部よりも内側の部分が切込線上に重なるように、開封用条体を配置し、切込線から開封用条体の他端側の所定範囲で、開封用条体をシートの一面に接合する工程と、
     切込線に向けて外力を加えることにより、開封用条体の一端部を、切込線が形成する開口を介してシートの他面側に移動させ、切込線からシートの他面側に突出させる工程とを備える
     ことを特徴とする包装用シートの製造方法。
    On one surface of the sheet, in a method for manufacturing a packaging sheet comprising an opening strip extending in a predetermined direction,
    A step of forming a score line on the sheet,
    On one side of the sheet, arrange the strip for opening so that the part inside one end of the strip for opening overlaps the score line, and within a predetermined range from the score line to the other end side of the strip for opening. , A step of joining the opening strip to one surface of the sheet,
    By applying an external force toward the cut line, one end of the opening strip is moved to the other surface side of the sheet through the opening formed by the cut line, and the cut line moves to the other surface side of the sheet. A method of manufacturing a packaging sheet, comprising: a step of projecting.
  12.  シートの一面に、所定方向に延びる開封用条体を備える包装用シートの製造方法において、
     シートに開口を形成する工程と、
     シートの一面に、開封用条体の一端部よりも内側の部分が開口上に重なるように、開封用条体を配置し、開口から開封用条体の他端側の所定範囲で、開封用条体をシートの一面に接合する工程と、
     開口に向けて外力を加えることにより、開封用条体の一端部を、開口を介してシートの他面側に移動させ、開口からシートの他面側に突出させる工程とを備える
     ことを特徴とする包装用シートの製造方法。
    On one surface of the sheet, in a method for manufacturing a packaging sheet comprising an opening strip extending in a predetermined direction,
    Forming an opening in the sheet,
    On one surface of the sheet, the unsealing strip is arranged so that the inside part of the unsealing strip overlaps the opening, and the unsealing strip is opened within a predetermined range from the opening to the other end of the unsealing strip. A step of joining the strip to one surface of the sheet,
    A step of moving one end portion of the unsealing strip to the other surface side of the sheet through the opening by applying an external force toward the opening, and projecting from the opening to the other surface side of the sheet. A method for manufacturing a packaging sheet.
  13.  一端側よりも他端側が幅広となる形状を有する一対のシートが重ね合わせられ、一端側の頂部接合部と両側縁の側部接合部により三方が封止され、他端側が開口部となる袋本体と、頂部接合部から突出する各シートの突出片で構成されるヘッダ部とを備える食品用包装袋において、
     一方のシートは、ヘッダ部に、開口を備えるとともに、一方のシートの内面に、開口からシートの他端側にかけて開封用条体を備え、
     開封用条体の一端部は、開口から一方のシートの外面側に突出して開封用の摘み片となる
     ことを特徴とする食品用包装袋。
    A pair of sheets having a shape in which the other end side is wider than the one end side are overlapped, and the top joint part on one end side and the side part joint parts on both sides seal three sides, and the other end side is an opening. In a food packaging bag comprising a main body and a header portion composed of a protruding piece of each sheet protruding from the top joint portion,
    One of the sheets is provided with an opening in the header portion, and an opening strip is provided on the inner surface of the one sheet from the opening to the other end side of the sheet,
    A food packaging bag, wherein one end of the unsealing strip protrudes from the opening to the outer surface side of one of the sheets to form a tab for unsealing.
PCT/JP2019/034900 2019-02-19 2019-09-05 Method of manufacturing packaging sheet, method of manufacturing raw material for packaging sheet, and food packaging bag WO2020170483A1 (en)

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TW108148329A TWI808291B (en) 2019-02-19 2019-12-30 Manufacturing method of packaging sheet, manufacturing method of packaging sheet blank, and packaging bag for food

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