WO2020170483A1 - 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 - Google Patents

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 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
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English (en)
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/ja
Priority to CN201980003065.2A priority patent/CN111936305B/zh
Priority to TW108148329A priority patent/TWI808291B/zh
Publication of WO2020170483A1 publication Critical patent/WO2020170483A1/ja

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING 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
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/74—Auxiliary operations
    • B31B70/81—Forming or attaching accessories, e.g. opening devices, closures or tear strings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS 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
    • B65D33/00—Details of, or accessories for, sacks or bags
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS 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
    • B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
    • B65D85/50—Containers, 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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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Zoology (AREA)
  • General Health & Medical Sciences (AREA)
  • Marine Sciences & Fisheries (AREA)
  • Toxicology (AREA)
  • Health & Medical Sciences (AREA)
  • Evolutionary Biology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Packging For Living Organisms, Food Or Medicinal Products That Are Sensitive To Environmental Conditiond (AREA)
  • Packages (AREA)
  • Bag Frames (AREA)
  • Making Paper Articles (AREA)
  • Wrappers (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)
PCT/JP2019/034900 2019-02-19 2019-09-05 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 WO2020170483A1 (ja)

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JP2019568418A JP6714957B1 (ja) 2019-02-19 2019-09-05 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
CN201980003065.2A CN111936305B (zh) 2019-02-19 2019-09-05 包装用片材的制造方法、包装用片材坯料的制造方法以及食品用包装袋
TW108148329A TWI808291B (zh) 2019-02-19 2019-12-30 包裝用片材的製造方法、包裝用片材坯料的製造方法以及食品用包裝袋

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JP2019-027101 2019-02-19

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Citations (3)

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JPS54106396A (en) * 1978-02-09 1979-08-21 Japan Tobacco & Salt Public Method and device for inserting upper lid for box having tongueeshaped lid
JPH07256797A (ja) * 1994-03-18 1995-10-09 Nippo Kk プラスチック製包装袋の製法
JP3072028U (ja) * 2000-03-27 2000-09-29 ウインテック株式会社 食品の包装袋

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JP2938518B2 (ja) * 1990-06-11 1999-08-23 岡田紙業株式会社 調理済食品の再加熱用収納体およびそれを用いた調理方法
JP2004315064A (ja) 2003-04-18 2004-11-11 Nk Kogyo Kk 包装用袋
JP2006131271A (ja) 2004-11-08 2006-05-25 Azuma Kako:Kk サンドイッチ等食品包装用袋
JP4710378B2 (ja) * 2005-03-30 2011-06-29 凸版印刷株式会社 易引き裂き性を有する包装袋
TWM281177U (en) * 2005-06-02 2005-11-21 Tzeng Wen Chi Probe base for circuit inspecting apparatus of circuit board
CN101875414A (zh) * 2009-04-30 2010-11-03 朋和产业株式会社 三明治等食品用包装袋
JP5963336B1 (ja) * 2015-08-05 2016-08-03 アイワ工業株式会社 サンドイッチ包装用袋
JP6124488B1 (ja) * 2016-07-23 2017-05-10 アイワ工業株式会社 サンドイッチ包装用袋および包装サンドイッチ
TWM539487U (zh) * 2016-11-04 2017-04-11 朋和產業股份有限公司 易撕包裝袋結構
JP2018162083A (ja) 2017-03-24 2018-10-18 アイワ工業株式会社 サンドイッチ包装用袋
JP2019001532A (ja) 2017-06-19 2019-01-10 アイワ工業株式会社 サンドイッチ包装方法および包装サンドイッチ

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54106396A (en) * 1978-02-09 1979-08-21 Japan Tobacco & Salt Public Method and device for inserting upper lid for box having tongueeshaped lid
JPH07256797A (ja) * 1994-03-18 1995-10-09 Nippo Kk プラスチック製包装袋の製法
JP3072028U (ja) * 2000-03-27 2000-09-29 ウインテック株式会社 食品の包装袋

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JP7487384B2 (ja) 2024-05-20
TWI808291B (zh) 2023-07-11
TW202103906A (zh) 2021-02-01
JP2020132275A (ja) 2020-08-31
JP7290595B2 (ja) 2023-06-13
CN111936305B (zh) 2023-12-15
CN111936305A (zh) 2020-11-13
JP2023106593A (ja) 2023-08-01

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