TWI808291B - Manufacturing method of packaging sheet, manufacturing method of packaging sheet blank, and packaging bag for food - Google Patents

Manufacturing method of packaging sheet, manufacturing method of packaging sheet blank, and packaging bag for food Download PDF

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TWI808291B
TWI808291B TW108148329A TW108148329A TWI808291B TW I808291 B TWI808291 B TW I808291B TW 108148329 A TW108148329 A TW 108148329A TW 108148329 A TW108148329 A TW 108148329A TW I808291 B TWI808291 B TW I808291B
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sheet
unsealing
strip
opening
line
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TW108148329A
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TW202103906A (en
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神谷知毅
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日商朋和產業股份有限公司
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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

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Marine Sciences & Fisheries (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Evolutionary Biology (AREA)
  • General Health & Medical Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Zoology (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)

Abstract

為了提高具有使開封用條體(5)的一端部(5a)突出而成為開封用的捏持片的開封機構的包裝用片材的量產性，本發明的包裝用片材的製造方法包括：在片材(3)上通過形成切入線(32)而形成在彎曲時打開而形成開口的游離片(33)的工序；在片材(3)的一面上，以比開封用條體(5)的一端部(5a)更靠內側的部分重疊於游離片(33)上的方式配置開封用條體(5)，並且在從游離片(33)到開封用條體(5)的另一端側的規定範圍內，將開封用條體(5)與片材(3)的一面接合的工序；及通過向游離片(33)施加外力，使開封用條體(5)的一端部(5a)經由游離片(33)所形成的開口向片材(3)的另一面側移動，使開封用條體(5)的一端部(5a)從切入線(32)向片材(3)的另一面側突出的工序。 In order to improve the mass production of a packaging sheet having an unsealing mechanism that protrudes from one end (5a) of the unsealing strip (5) to become a pinch piece for unsealing, the manufacturing method of the packaging sheet of the present invention includes: forming a free sheet (33) that opens when bent to form an opening on the sheet (3) by forming a cut line (32); The strip body (5) for unsealing is arranged so that the inner part overlaps on the free sheet (33), and within a prescribed range from the free sheet (33) to the other end side of the strip body (5) for unsealing, the process of bonding the strip body (5) with the sheet (3) to one side of the sheet (3); The other side of the sheet (3) is moved to make the one end (5a) of the unsealing strip (5) protrude from the cutting line (32) to the other side of the sheet (3).

Description

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Manufacturing method of packaging sheet, manufacturing method of packaging sheet blank, and food Product packaging bag

本發明涉及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。The present invention relates to a manufacturing method of a packaging sheet, a manufacturing method of a packaging sheet blank, and a packaging bag for food.

存在被加工成側面形狀為三角形狀（主要指直角三角形狀）或與其類似的形狀且具有規定的厚度或寬度的立體形狀的三明治等食品。用於包裝此類食品的食品用包裝袋一般如圖16和圖17（a）所示。There are foods such as sandwiches processed into a three-dimensional shape whose side shape is triangular (mainly right-angled triangle) or similar, and has a predetermined thickness or width. The food packaging bags used to package this type of food are generally shown in Figure 16 and Figure 17(a).

食品用包裝袋1’具有袋主體10’和頭部15’。袋主體10’構成為，使具有與一端側相比另一端側寬度更寬的形狀的一對片材2’、3’重合，由一端側的頂部接合部11’和兩側緣的側部接合部12’、12’對三方進行密封，另一端側成為開口部13’。頭部15’構成為，將從頂部接合部11’突出的各片材2’、3’的突出片在適當的部位相互接合而一體化。The food packaging bag 1' has a bag body 10' and a head 15'. The bag main body 10' is configured by overlapping a pair of sheets 2', 3' having a shape wider than the other end side, and sealing the three sides by the top joint portion 11' on one end side and the side joint portions 12', 12' on both side edges, and the other end side is an opening 13'. The head portion 15' is configured by joining the protruding pieces of the respective sheets 2', 3' protruding from the top joint part 11' to each other at appropriate positions to be integrated.

在頭部15’中的第二片材3’上形成有例如倒U字狀的切入線32’，並且形成有以切入線32’為輪廓線的開封用的捏持片33’。在第二片材3’的內表面上，從捏持片33’到第二片材3’的另一端側接合有可撕膠帶等的開封用條體5’。On the second sheet 3' in the head 15', for example, an inverted U-shaped cut-in line 32' is formed, and a grip piece 33' for unsealing with the cut-in line 32' as the outline is formed. On the inner surface of the second sheet 3', an unsealing strip 5' such as a tearable tape is bonded from the holding piece 33' to the other end side of the second sheet 3'.

在食用由食品用包裝袋1’所包裝的食品時，如圖17（b）所示，捏住捏持片33’而向下拉。於是，開封用條體5’被拉拽而在第二片材3’上形成切斷開放部，從而能夠從該切斷開放部取出食品。When eating the food packaged in the food packaging bag 1', as shown in Fig. 17(b), the holding piece 33' is pinched and pulled down. Then, the strip 5' for unsealing is pulled to form a cut open portion on the second sheet 3', so that the food can be taken out from the cut open portion.

然而，受食品用包裝袋1’的製造裝置的精度等（接合條件的偏差等）的影響，存在第二片材3’與開封用條體5’未充分接合的情況。對於此類食品用包裝袋1’，在開封時向下拉捏持片33’時，捏持片33’或與其連續的第二片材3’的一部分從開封用條體5’剝離，僅第二片材3’被拉拽，產生無法適當地開封的問題。而且，頂部接合部11’的接合強度越強，該問題越明顯。因此，現有做法是，在接合之前在接合面上塗覆局部塗層劑，以使頂部接合部11’的接合強度不會過強。However, the second sheet 3' may not be sufficiently bonded to the unsealing strip 5' due to the influence of the accuracy of the manufacturing apparatus of the food packaging bag 1' (variation in bonding conditions, etc.). In this type of food packaging bag 1', when the grip piece 33' is pulled downward during unsealing, a part of the grip piece 33' or the second sheet 3' continuous therewith is peeled off from the unsealing strip 5', and only the second sheet 3' is pulled, causing a problem that the seal cannot be properly opened. Also, the stronger the bonding strength of the top bonding portion 11', the more conspicuous this problem becomes. Therefore, the current practice is to apply a partial coating agent on the joint surface before joining, so that the joint strength of the top joint part 11' will not be too strong.

從解決這些問題的觀點出發，專利文件1所記載的食品用包裝袋，其開封用條體的一端部向頭部的外表面側突出，通過捏住該一端部來開封，由於直接拉拽開封用條體進行開封，因此，能夠適當且可靠地開封。在這一點上，可以說專利文件1所記載的食品用包裝袋優於上述現有的食品用包裝袋1’。From the viewpoint of solving these problems, in the food packaging bag described in Patent Document 1, one end of the unsealing strip protrudes toward the outer surface side of the head, and the opening is opened by pinching the one end, and the unsealing can be opened by directly pulling the unsealing strip, so that it can be opened appropriately and reliably. In this regard, it can be said that the food packaging bag described in Patent Document 1 is superior to the above-mentioned conventional food packaging bag 1'.

現有技術文件 專利文件 專利文件1：實用新型第3072028號公報prior art documents patent documents Patent Document 1: Utility Model No. 3072028

然而，對於專利文件1所記載的食品用包裝袋，不清楚通過對片材實施怎樣的加工，能夠使開封用條體的一端部向片材的外表面側突出。另外，對於在專利文件1中所記載的食品用包裝袋，不清楚通過怎樣的方法，使開封用條體的一端部向片材的外表面側突出。因此，無法量產大量地被消耗的食品用包裝袋。 However, in the food packaging bag described in Patent Document 1, it is not clear what kind of processing is performed on the sheet so that one end of the opening strip can protrude toward the outer surface side of the sheet. In addition, in the food packaging bag described in Patent Document 1, it is unclear how to make the one end portion of the strip for opening protrude toward the outer surface side of the sheet. Therefore, packaging bags for food which are consumed in large quantities cannot be mass-produced.

因此，本發明鑒於上述情況而提出，其目的在於，提供一種具有開封用條體的一端部突出而成為開封用的捏持片的開封機構，並且量產性優良的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。 Therefore, the present invention has been made in view of the above-mentioned circumstances, and its object is to provide a method of manufacturing a packaging sheet, a method of manufacturing a packaging sheet blank, and a food packaging bag that have an unsealing mechanism that protrudes from one end of the strip for unsealing to become a pinch piece for unsealing, and that are excellent in mass productivity.

本發明的包裝用片材的製造方法，在片材的一面上具有沿規定方向延伸的開封用條體，其中該包裝用片材的製造方法包括：在片材上形成切入線，並且通過形成切入線，形成在彎曲時打開而形成開口的游離片的工序；在片材的一面上，以比開封用條體的一端部更靠內側的部分重疊於游離片上的方式配置開封用條體，在從游離片到開封用條體的另一端側的規定範圍內，將開封用條體與片材的一面接合的工序；及通過向游離片施加外力，使開封用條體的一端部經由游離片所形成的開口向片材的另一面側移動，使開封用條體的一端部從切入線向片材的另一面側突出的工序。 The manufacturing method of the packaging sheet of the present invention has an unsealing strip body extending in a predetermined direction on one side of the sheet, wherein the manufacturing method of the packaging sheet includes: forming a cut-in line on the sheet, and forming a free sheet that opens when bent to form an opening by forming the cut-in line; A process of bonding the strip for unsealing to one side of the sheet within a predetermined range of the end side; and a process of making one end of the strip for unsealing move to the other side of the sheet through the opening formed by the free sheet by applying an external force to the free sheet, and protruding from the incision line to the other side of the sheet.

另外，本發明的包裝用片材坯料的製造方法，一邊沿長度方向搬運片材坯料，一邊在片材坯料的一面上以規定的間隔粘貼開封用條體，其中該包裝用片材坯料的製造方法包括：通過切斷機構在片材坯料上形成切入線，並且通過形成切入線，形成在彎曲時打開而形成開口的游離片的工序；通過比切斷機構更靠片材坯料的搬運方向的下游側的搬運/接合機構，在片材坯料的一面上以比開封用條體的一端部更靠內側的部分重疊於游離片上的方式配置開封用條體，在從游離片到開封用條體的另一端側的規定範圍內，將開封用條體與片材坯料的一面接合的工序；及通過利用比搬運/接合機構更靠片材坯料的搬運方向的下游側的外力施加機構朝向游離片施加外力，使開封用條體的一端部經由游離片所形成的開口向片材坯料的另一面側移動，使開封用條體的一端部從切入線向片材坯料的另一面側突出的工序。 In addition, the method for manufacturing a sheet blank for packaging according to the present invention is to attach strips for unsealing to one surface of the sheet blank at predetermined intervals while conveying the sheet blank in the longitudinal direction, wherein the manufacturing method of the sheet blank for packaging includes: forming an incision line on the sheet blank by a cutting mechanism, and forming a free sheet that opens when bent to form an opening by forming the incision line; On one side of the blank, the strip body for unsealing is arranged so that the inner part of the strip body for unsealing is superimposed on the free sheet, and within a predetermined range from the free sheet to the other end side of the strip body for unsealing, the process of joining the strip body for unsealing to one side of the sheet blank; A step of moving the formed opening to the other side of the sheet material, and protruding one end of the strip for unsealing from the cutting line to the other side of the sheet material.

另外，本發明的食品用包裝袋，具有：袋主體，使具有與一端側相比另一端側寬度更寬的形狀的一對片材重合，由一端側的頂部接合部和兩側緣的側部接合部對三方進行密封，另一端側成為開口部；及頭部，由從頂部接合部突出的各片材的突出片構成，其中一方的片材在頭部具有通過形成切入線而形成游離片，即，在彎曲時打開而形成開口的游離片；並且在一方的片材的內表面上從游離片到片材的另一端側具有開封用條體， 開封用條體的一端部從切入線向一方的片材的外表面側突出而成為開封用的捏持片。 In addition, the food packaging bag of the present invention has: a bag main body, a pair of sheets having a wider width than one end side is superimposed, three sides are sealed by a top joint part on one end side and a side joint part on both sides, and the other end side is an opening; There is a strip for unsealing from the free sheet to the other end side of the sheet on the inner surface of the sheet, One end of the strip for unsealing protrudes from the incision line toward the outer surface side of one sheet to form a gripping piece for unsealing.

另外，另一個本發明的包裝用片材的製造方法，在片材的一面上具有沿規定方向延伸的開封用條體，其中該包裝用片材的製造方法包括：在片材上形成切入線的工序；在片材的一面上，以比開封用條體的一端部更靠內側的部分重疊於切入線上的方式配置開封用條體，在從切入線到開封用條體的另一端側的規定範圍內，將開封用條體與片材的一面接合的工序；及通過向切入線施加外力，使開封用條體的一端部經由切入線所形成的開口向片材的另一面側移動，使開封用條體的一端部從切入線向片材的另一面側突出的工序。 In addition, another method of manufacturing a packaging sheet according to the present invention has an unsealing strip extending in a predetermined direction on one side of the sheet, wherein the manufacturing method of the packaging sheet includes: forming a cut line on the sheet; arranging the unsealing strip on one side of the sheet so that a part inner than one end of the opening strip overlaps the cut line; The process of bonding; and by applying an external force to the cut line, one end of the strip for unsealing is moved to the other side of the sheet through the opening formed by the cut line, and the one end of the strip for unsealing is protruded from the cut line to the other side of the sheet.

另外，又一個本發明的包裝用片材的製造方法，在片材的一面上具有沿規定方向延伸的開封用條體，其中該包裝用片材的製造方法包括：在片材上形成開口的工序；在片材的一面上，以比開封用條體的一端部更靠內側的部分重疊於開口上的方式配置開封用條體，在從開口到開封用條體的另一端側的規定範圍內，將開封用條體與片材的一面接合的工序；及通過向開口施加外力，使開封用條體的一端部經由開口向片材的另一面側移動，使開封用條體的一端部從開口向片材的另一面側突出的工序。 In addition, still another method of manufacturing a packaging sheet according to the present invention has an unsealing strip extending in a predetermined direction on one side of the sheet, wherein the manufacturing method of the packaging sheet includes: a step of forming an opening on the sheet; a step of arranging the opening strip on one side of the sheet so that a part inner than one end of the opening strip overlaps the opening; And by applying external force to the opening, one end of the strip for unsealing is moved to the other side of the sheet through the opening, and one end of the strip for unsealing protrudes from the opening to the other side of the sheet.

另外，另一個本發明的食品用包裝袋，具有：袋主體，使具有與一端側相比另一端側寬度更寬的形狀的一對片材重合，由一端側的頂部接合部和兩側緣的側部接合部對三方進行密封，另一端側成為開口部；及頭部，由從頂部接合部突出的各片材的突出片構成，其中 一方的片材在頭部具有開口，並且在一方的片材的內表面上從開口到片材的另一端側具有開封用條體， 開封用條體的一端部從開口向一方的片材的外表面側突出而成為開封用的捏持片。In addition, another food packaging bag according to the present invention has: a bag body in which a pair of sheets having a wider width than one end side are superimposed, three sides are sealed by a top joint portion on one end side and side joint portions on both sides, and the other end side becomes an opening; One sheet has an opening at the head, and an unsealing strip is provided on the inner surface of the one sheet from the opening to the other end side of the sheet, One end portion of the strip for unsealing protrudes from the opening toward the outer surface side of one sheet to form a gripping piece for unsealing.

如前述，根據本發明的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，能夠以簡單的結構以及簡單的方法來實現優良的量產性。As described above, according to the manufacturing method of the packaging sheet, the manufacturing method of the packaging sheet blank, and the food packaging bag of the present invention, excellent mass productivity can be realized with a simple structure and a simple method.

以下，作為本發明的食品用包裝袋的一個實施方式，參照圖1～圖13對用於三明治的包裝的食品用包裝袋進行說明。Hereinafter, as one embodiment of the packaging bag for food of the present invention, a packaging bag for food used for packaging sandwiches will be described with reference to FIGS. 1 to 13 .

如圖1～圖3所示，本實施方式的食品用包裝袋1具有袋主體10和頭部15。袋主體10構成為，使一對片材（第一片材2、第二片材3）重合，該一對片材具有與一端側相比另一端側寬度更寬的形狀，由一端側的頂部接合部11和兩側緣的側部接合部12、12對三方進行密封，另一端側成為開口部13。頭部15構成為，從頂部接合部11突出的各片材2、3的突出片在合適的位置相互接合而一體化。此外，第一片材也稱為表面片材，第二片材也稱為背面片材。As shown in FIGS. 1 to 3 , the food packaging bag 1 according to this embodiment has a bag body 10 and a head portion 15 . The bag main body 10 is constituted by superimposing a pair of sheets (first sheet 2, second sheet 3), the pair of sheets has a shape wider than the other end side, and the top joint portion 11 on the one end side and the side joint portions 12, 12 on both side edges seal the three sides, and the other end side becomes the opening portion 13. The head portion 15 is configured such that protruding pieces of the respective sheets 2 and 3 protruding from the top joint portion 11 are joined together at appropriate positions to be integrated. In addition, the first sheet is also referred to as a top sheet, and the second sheet is also referred to as a back sheet.

第一片材2由聚乙烯、聚丙烯等的具有熱熔敷性的塑膠片材構成。第一片材2構成為具有主體部20和頂端部21（上述突出片）。主體部20具有從一端側朝向另一端側逐漸變寬的形狀。頂端部21具有從主體部20的一端延伸的窄幅的形狀。The first sheet 2 is made of a heat-welding plastic sheet such as polyethylene or polypropylene. The first sheet 2 is configured to have a main body portion 20 and a tip portion 21 (the aforementioned protruding piece). The main body portion 20 has a shape gradually widening from one end side toward the other end side. The tip portion 21 has a narrow shape extending from one end of the main body portion 20 .

第二片材3也由聚乙烯、聚丙烯等的具有熱熔敷性的塑膠片材構成。第二片材3構成為具有主體部30和頂端部31（上述突出片）。主體部30具有從一端側朝向另一端側逐漸變寬的形狀。頂端部31具有從主體部30的一端延伸的窄幅的形狀。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 have a main body portion 30 and a tip portion 31 (the aforementioned protruding piece). The main body portion 30 has a shape gradually widening from one end side toward the other end side. The tip portion 31 has a narrow shape extending from one end of the main body portion 30 .

在本實施方式中，主體部20、30為梯形狀，頂端部21、31為矩形狀。因此，主體部20、30的一端（以及與其一致的頂端部21、31的另一端）為與從片材2、3的一端側朝向另一端側的方向（以下，稱為「長度方向」）正交的直線狀。換言之，主體部20、30的一端為平行於與長度方向正交的方向（以下，稱為「寬度方向」）的直線狀。主體部20、30的兩側緣為相對於長度方向傾斜的直線狀。頂端部21、31的兩側緣為與長度方向平行的直線狀。但是，主體部20、30的兩側緣的另一端側由於切口部14而欠缺。由此，主體部20、30的另一端側的寬度變窄了切口部14的量。In this embodiment, the main body parts 20, 30 are trapezoidal, and the tip parts 21, 31 are rectangular. Therefore, one end of the main body part 20, 30 (and the other end of the front end part 21, 31 corresponding thereto) is a straight line perpendicular to the direction from one end side of the sheet material 2, 3 to the other end side (hereinafter referred to as "longitudinal direction"). In other words, one end of the main body parts 20 and 30 has a linear shape parallel to a direction perpendicular to the longitudinal direction (hereinafter referred to as "width direction"). Both side edges of the main body parts 20 and 30 are straight lines inclined with respect to the longitudinal direction. Both side edges of the tip portions 21 and 31 are straight lines parallel to the longitudinal direction. However, the other end side of the both side edges of the main body part 20,30 is missing by the notch part 14. As shown in FIG. Thereby, the width of the other end side of the main body part 20,30 becomes narrow by the amount of the notch part 14. As shown in FIG.

頂部接合部11是通過沿著主體部20、30的一端對第一和第二片材2、3進行熱封而形成的。側部接合部12是通過對主體部20、30的側緣（斜邊）和頂端部21、31的側緣（縱邊）進行熱封而形成的。在本實施方式中，頂部接合部11是通過使用熱封桿進行熔敷而形成的，是在長度方向上具有規定的寬度的帶狀密封部。側部接合部12是通過熔斷而形成的線密封部。具體而言，頂部接合部11具有數毫米以上的寬度。側部接合部12的寬度為1mm以下。The top joint 11 is formed by heat sealing the first and second sheets 2 , 3 along one end of the body portion 20 , 30 . The side joining portion 12 is formed by heat-sealing the side edges (oblique sides) of the main body portions 20 , 30 and the side edges (longitudinal sides) of the tip portions 21 , 31 . In the present embodiment, the top joint portion 11 is formed by welding using a heat-sealing bar, and is a strip-shaped sealing portion having a predetermined width in the longitudinal direction. The side joint portion 12 is a wire seal portion formed by fusing. Specifically, the top joint portion 11 has a width of several millimeters or more. The side joint portion 12 has a width of 1 mm or less.

如此構成的袋主體10的內部為食品的容納部。在袋主體10中的第一片材2的內表面粘貼有內片材4。內片材4構成為，例如，另一端部在兩處通過點密封件等接合（接合部22），一端側為自由端。由此，即使食品在容納部內移動，內片材4也與食品的表面緊貼而追隨其移動。因此，第一片材2不會被污染，其外觀不會被損壞。 The inside of the bag main body 10 comprised in this way is a food storage part. The inner sheet 4 is attached to the inner surface of the first sheet 2 in the bag main body 10 . The inner sheet 4 is configured such that, for example, the other end is joined at two places by point seals or the like (joint portion 22 ), and one end side is a free end. As a result, even if the food moves in the container, the inner sheet 4 adheres to the surface of the food and follows the movement. Therefore, the first sheet 2 is not stained and its appearance is not damaged.

如圖4所示，在頭部15中的第二片材3上形成有切入線32。而且，在頭部15中的第二片材3上，通過形成切入線32，從而形成有游離片33。切入線32是兩端點32a、32a接近頂部接合部11的形狀。游離片33構成為，以切入線32為輪廓線，以兩端點32a、32a間為固定端，以一端側為自由端，在固定端側彎曲時打開而形成開口。在本實施方式中，切入線32形成為倒U字狀。由此，游離片33具有沿寬度方向的一端緣33a和沿長度方向的左右一對側緣33b、33b，形成為向上的舌片。 As shown in FIG. 4 , an incision line 32 is formed on the second sheet 3 in the head portion 15 . Moreover, the free piece 33 is formed by forming the incision line 32 in the 2nd sheet|seat 3 in the head part 15. As shown in FIG. The cut-in line 32 has a shape in which both ends 32a, 32a approach the top joint portion 11 . The free piece 33 is configured such that the cut-in line 32 is defined as a contour line, the space between the two ends 32a, 32a is defined as a fixed end, and one end side is defined as a free end. When the fixed end side is bent, the free piece 33 opens to form an opening. In this embodiment, the cut line 32 is formed in an inverted U shape. Thus, the free piece 33 has one end edge 33a along the width direction and a pair of left and right side edges 33b, 33b along the length direction, and is formed as an upward tongue piece.

在第二片材3的內表面，從游離片33到第二片材3的另一端側設置有開封用條體5。開封用條體5例如沿長度方向設置在第二片材3的寬度方向中央部。開封用條體5通過熱封、粘接等與第二片材3的內表面接合(接合部34)。作為一個例子，在該內表面(與第二片材3相對的相對面)塗覆塗層劑後，開封用條體5通過熱粘接、自我粘合而與第二片材3的內表面接合。開封用條體5例如是可撕膠帶、繩等。在本實施方式中，開封用條體5是寬度為5mm以上或10mm以上的帶狀的可撕膠帶。可撕膠帶是通過將雙軸拉伸聚酯或聚對苯二甲酸乙二酯(PET)、聚乙烯(PE)、聚丙烯(PP)、雙軸拉伸聚丙烯(OPP)等的具有熱熔敷性的塑膠片材切成細條而成的。 On the inner surface of the second sheet 3 , an unsealing strip 5 is provided from the free sheet 33 to the other end side of the second sheet 3 . The strip 5 for unsealing is provided, for example, at the center in the width direction of the second sheet 3 along the longitudinal direction. The strip for unsealing 5 is bonded to the inner surface of the second sheet 3 by heat sealing, bonding, or the like (bonding portion 34 ). As an example, after coating the coating agent on the inner surface (the surface opposite to the second sheet 3 ), the strip for unsealing 5 is bonded to the inner surface of the second sheet 3 by thermal bonding or self-adhesion. The strip body 5 for unsealing is, for example, a tearable adhesive tape, a string, or the like. In the present embodiment, the strip body 5 for unsealing is a strip-shaped tearable tape having a width of 5 mm or more or 10 mm or more. Tearable tapes are made by cutting plastic sheets with hot-melt properties such as biaxially stretched polyester or polyethylene terephthalate (PET), polyethylene (PE), polypropylene (PP), and biaxially stretched polypropylene (OPP) into thin strips.

開封用條體5的一端部5a與第二片材3未接合。開封用條體5的一端部5a從切入線32向第二片材3的外表面側突出，成為開封用的捏持片。由此，當捏住開封用條體5的一端部5a而向下拉時，開封用條體5被拉拽，以游離片33為開封起點，以規定的寬度切斷第二片材3，從而在第二片材3上形成切斷開放部。開封用條體5的一端部5a的突出量如果短，則難以捏住。相反地，如果長，則容易折斷，有可能對製造裝置的搬運性造成障礙。因此，將開封用條體5的一端部5a的突出量設定為5mm以上或10mm以上或15mm以上，且25mm以下或20mm以下的範圍。 One end 5 a of the strip 5 for opening is not joined to the second sheet 3 . One end 5a of the strip 5 for opening protrudes from the cut line 32 toward the outer surface side of the second sheet 3, and serves as a gripping piece for opening. Thus, when one end portion 5a of the unsealing strip 5 is pinched and pulled downward, the unsealing strip 5 is pulled, and the free piece 33 is used as the starting point of unsealing, and the second sheet 3 is cut with a predetermined width, thereby forming a cut open portion on the second sheet 3. If the protruding amount of the one end portion 5a of the unsealing strip 5 is short, it will be difficult to pinch. Conversely, if it is long, it is easy to break and may hinder the portability of the manufacturing device. Therefore, the protrusion amount of the one end portion 5a of the strip body 5 for unsealing is set to a range of not less than 5 mm, not less than 10 mm, or not less than 15 mm, and not more than 25 mm or not more than 20 mm.

如圖4(b)所示，開封用條體5也與游離片33接合，與游離片33一體化。但是，開封用條體5不會接合至游離片33的一端緣33a。因此，在接合部34的一端緣34a與游離片33的一端緣33a之間存在寬度G1的非接合部。若不設置非接合部，或者寬度G1較小，則受到食品用包裝袋1的製造裝置的精度等(片材坯料的蛇行等)的影響，有可能接合越過切入線32。在該情況下，開封用條體5的一端部5a鎖定，無法使一端部5a從切入線32向第二片材3的外表面側突出。相反地，若寬度G1較大，則能夠捏住游離片33，但有可能發生捏住此處無意進行開封的誤開封操作。在該情況下，當然，不使用開封用條體5，而僅第二片材3被拉拽，無法進行適當地開封。因此，非接合部的寬度G1相對於作為製造誤差的振幅，設定為 1mm以上或1.5mm以上，且5mm以下或3mm以下或2mm以下的範圍。 As shown in FIG. 4( b ), the unsealing strip 5 is also bonded to the release sheet 33 and integrated with the release sheet 33 . However, the unsealing strip 5 is not joined to the one end edge 33 a of the release sheet 33 . Therefore, a non-joint portion having a width G1 exists between the one end edge 34 a of the joint portion 34 and the one end edge 33 a of the free piece 33 . If no non-joint portion is provided, or if the width G1 is small, the joint may go beyond the incision line 32 due to the influence of the accuracy of the manufacturing apparatus of the food packaging bag 1 (snake, etc., etc. of the sheet material). In this case, the one end part 5a of the strip body 5 for opening is locked, and the one end part 5a cannot protrude from the cut line 32 to the outer surface side of the 2nd sheet|seat 3. As shown in FIG. Conversely, if the width G1 is large, the release sheet 33 can be pinched, but there is a possibility of an erroneous unsealing operation in which the pinch is unintentionally performed. In this case, of course, without using the strip 5 for opening, only the second sheet 3 is pulled, and proper opening cannot be performed. Therefore, the width G1 of the non-joint portion is set as 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.

開封用條體5的寬度小於游離片33的固定端的寬度(即，切入線32的兩端點32a、32a間的間隔)。因此，在開封用條體5的各側緣5b與游離片33的各側緣33b或切入線32的各端點32a之間存在寬度G2的間隙部。若未設置間隙部或者寬度G2較小，則開封用條體5的一端部5a被切入線32掛住，有可能無法使一端部5a從切入線32向第二片材3的外表面側突出。另外，由於受到食品用包裝袋1的製造裝置的精度等(粘貼位置偏移等)的影響，開封用條體5被切入線32掛住，從而產生褶皺，有可能造成產品不良。因此，間隙部的寬度G2相對於作為製造誤差的振幅設為1mm以上或1.5mm以上。 The width of the strip 5 for unsealing is smaller than the width of the fixed end of the release sheet 33 (that is, the distance between the two end points 32a, 32a of the incision line 32). Therefore, a gap portion having a width G2 exists between each side edge 5 b of the strip body 5 for opening and each side edge 33 b of the release sheet 33 or each end point 32 a of the cut line 32 . If the gap is not provided or the width G2 is small, the one end 5a of the unsealing strip body 5 is caught by the cut line 32, and the one end 5a may not protrude from the cut line 32 to the outer surface side of the second sheet 3. In addition, due to the influence of the accuracy of the manufacturing equipment of the food packaging bag 1 (misalignment of the pasting position, etc.), the strip for opening 5 is caught by the cut line 32, thereby causing wrinkles, which may cause product failure. Therefore, the width G2 of the gap portion is set to be 1 mm or more or 1.5 mm or more with respect to the amplitude of the manufacturing error.

在包裝食品時，打開開口部13，將食品***袋主體10內之後，將開口部13的多餘的片材片(從食品的底面露出的片材片)適當地折疊，封閉開口部13，粘貼標籤或膠帶來密封開口部13。由此，完成如圖5(a)所示的食品包裝體。在該食品包裝體中，開封用條體5的一端部5a以游離片33為固定端，以一端側為自由端，從切入線32向頭部15中的第二片材3的外表面側突出。另一方面，開封用條體5的其他部分從游離片33開始沿著第二片材3的內表面。 When packaging food, open the opening 13, insert the food into the bag main body 10, fold the excess sheet (the sheet exposed from the bottom surface of the food) of the opening 13 appropriately, close the opening 13, and stick a label or tape to seal the opening 13. Thereby, the food packaging body shown in FIG.5(a) is completed. In this food packaging body, one end 5a of the strip body 5 for opening protrudes from the cutting line 32 to the outer surface side of the second sheet 3 in the head 15 with the free piece 33 as a fixed end and one end side as a free end. On the other hand, the other portion of the strip 5 for opening is along the inner surface of the second sheet 3 starting from the free sheet 33 .

然後，在食用食品時，如圖5(b)所示，捏住突出的開封用條體5的一端部5a而向下拉。於是，開封用條體5被拉拽，在第二片材3上形成切斷開放部，從而能夠從該切斷開放部取出食品。此外，在食品包裝體中，開封用條體5的一端部5a從頭部15的外表面稍微浮起分離，容易被捏住。或者，通過使頭部15彎曲，開封用條體5的一端部5a從頭部15充分地分離，則更容易被捏住。因此，能夠順暢地進行開封操作。Then, when eating the food, as shown in FIG. 5( b ), one end 5 a of the protruding unsealing strip 5 is pinched and pulled down. Then, the unsealing strip 5 is pulled to form a cut open portion in the second sheet 3, and the food can be taken out from the cut open portion. In addition, in the food package, one end portion 5a of the strip body 5 for opening slightly floats away from the outer surface of the head portion 15 and is easily pinched. Alternatively, by bending the head portion 15, the one end portion 5a of the unsealing strip 5 is sufficiently separated from the head portion 15 to be pinched more easily. Therefore, the unsealing operation can be performed smoothly.

本實施方式的食品用包裝袋由上述的結構構成，接下來，對本實施方式的食品用包裝袋的製造方法進行說明。The packaging bag for food of this embodiment is comprised by the above-mentioned structure, Next, the manufacturing method of the packaging bag for food of this embodiment is demonstrated.

製造工序大致分為如下工序：如圖6至圖12所示，製造具有使開封用條體5的一端部5a向第二片材3的外表面側突出而成為開封用的捏持片的開封機構的第二片材坯料3X的工序；如圖13所示，由第一片材坯料2X和第二片材坯料3X來製造食品用包裝袋1的工序。The manufacturing process is roughly divided into the following steps: as shown in FIGS. 6 to 12 , a process of manufacturing a second sheet blank 3X having an unsealing mechanism that makes one end portion 5 a of the strip body 5 for unsealing protrude toward the outer surface side of the second sheet 3 to become a pinch piece for unsealing; as shown in FIG. 13 , a process of manufacturing a food packaging bag 1 from the first sheet blank 2X and the second sheet blank 3X.

此外，具有梯形狀的此類食品包裝袋1根據其形狀，以相對於片材坯料2X、3X的搬運方向橫向且朝向交替地相反的方式製造。即，交替地製造在與片材坯料2X、3X的搬運方向交叉的寬度方向的一方側形成有開口部13並且在寬度方向的另一方側形成有頭部15的食品用包裝袋1、以及在寬度方向的另一方側形成有開口部13並且在寬度方向的一方側形成有頭部15的食品用包裝袋1。因此，在以下的說明和附圖中，為了便於說明，對前者的食品用包裝袋1的結構標注「一方的」用語，並且在元件符號後標注「A」，另外，對後者的食品用包裝袋1的結構標注「另一方的」的用語，並且在元件符號後標注「B」。 In addition, such food packaging bags 1 having a trapezoidal shape are manufactured in such a manner that they are alternately directed laterally and oppositely to the conveyance direction of the sheet blanks 2X and 3X depending on the shape. That is, the food packaging bag 1 in which the opening 13 is formed on one side in the width direction intersecting with the conveying direction of the sheet materials 2X and 3X and the head 15 is formed on the other side in the width direction, and the food packaging bag 1 in which the opening 13 is formed on the other side in the width direction and the head 15 is formed on one side in the width direction are manufactured alternately. Therefore, in the following description and drawings, for the convenience of description, the former structure of the food packaging bag 1 is marked with the term "one" and "A" is added after the element code, and the latter structure of the food packaging bag 1 is marked with the term "the other" and "B" is added after the element code.

製造第二片材坯料3X的工序是本發明的包裝用片材的製造方法以及包裝用片材坯料的製造方法的一個實施方式。該工序包括：i)工序，如圖6所示，在第二片材坯料3X上形成切入線32，更詳細而言，在第二片材坯料3X上形成切入線32，並且通過形成切入線32而形成游離片33(第一工序)；ii)工序，如圖7和圖8所示，在第二片材坯料3X的內表面上，以比開封用條體5的一端部5a靠內側的部分重疊於游離片33上的方式配置開封用條體5，在從游離片33到開封用條體5的另一端側的規定範圍內，將開封用條體5與第二片材坯料3X的內表面接合(第二工序)；及iii)工序，如圖9至圖12所示，通過向游離片33施加外力，更詳細而言，通過向游離片33中的開封用條體5的部分施加外力，使開封用條體5的一端部5a經由游離片33所形成的開口向第二片材坯料3X的相反面(外表面)側移動，使開封用條體5的一端部5a從切入線32向第二片材坯料3X的相反面側突出(第三工序)。 The process of manufacturing the second raw material sheet 3X is one embodiment of the manufacturing method of the packaging sheet and the manufacturing method of the packaging sheet raw material of the present invention. This process includes: i) a process, as shown in FIG. 6, forming a cut-in line 32 on the second sheet blank 3X, more specifically, forming a cut-in line 32 on the second sheet blank 3X, and forming a free sheet 33 by forming the cut-in line 32 (first step); ii) Step, as shown in FIGS. The strip body 5 for sealing, within a predetermined range from the free sheet 33 to the other end side of the strip body 5 for unsealing, joins the strip body 5 for unsealing with the inner surface of the second sheet blank 3X (second process); and iii) process, as shown in FIGS. The formed opening is moved to the opposite surface (outer surface) side of the second sheet blank 3X, and the one end portion 5a of the unsealing bar 5 protrudes from the cutting line 32 to the opposite surface side of the second sheet blank 3X (third step).

在第一工序中，間歇地搬運第二片材坯料3X。然後，配置在搬運路徑上的一方的切入線32A用的切入機構(未圖示)和另一方的切入線32B用的切入機構(未圖示)通過與第二片材坯料3X的間歇搬運同步地進行動作，由此，如圖6所示，分別形成一方的切入線32A和另一方的切入線32B。In the first step, the second sheet material 3X is conveyed intermittently. Then, a cutting mechanism (not shown) for one cutting line 32A and a cutting mechanism (not shown) for the other cutting line 32B disposed on the conveyance path operate synchronously with the intermittent conveyance of the second sheet material 3X, whereby, as shown in FIG. 6 , one cutting line 32A and the other cutting line 32B are respectively formed.

作為一個例子，切入機構具有接收輥和工具。該切入機構通過使工具在接收輥上往復移動，使設置於工具的表面的切口刃與接收輥抵接，從而在第二片材坯料3X上形成切入線32。但是，切入機構並不限定於該結構。切入機構只要能夠在第二片材坯料3X上形成切入線32，也可以是由其他結構構成的機構。As an example, a plunging mechanism has a take-up roller and a tool. This incision mechanism forms the incision line 32 on the second sheet material 3X by reciprocating the tool on the receiving roller so that the cutting edge provided on the surface of the tool comes into contact with the receiving roller. However, the cutting mechanism is not limited to this structure. As long as the cutting mechanism can form the cutting line 32 on the second sheet material 3X, it may be a mechanism constituted by another structure.

在第二工序中，間歇地搬運第二片材坯料3X。然後，如圖7和圖8所示，通過使配置在搬運路徑上的一方的開封用條體5A用的切斷/搬運/接合機構100、101和另一方的開封用條體5B用的切斷/搬運/接合機構100、101與第二片材坯料3X的間歇搬運同步地動作，從而使一方的開封用條體5A和另一方的開封用條體5B分別從開封用條體的片材坯料5X分離並搬運，並且被配置並結合（接合部34A，34B）於第二片材坯料3X的內表面。In the second step, the second sheet material 3X is conveyed intermittently. Then, as shown in Fig. 7 and Fig. 8, by making the cutting/carrying/bonding mechanism 100,101 that is arranged on one side unsealing strip body 5A usefulness and the other side unsealing strip body 5B useful cutting/conveying/bonding mechanism 100,101 and the intermittent conveyance of the second sheet blank 3X synchronously actuated on the transport path, thereby make one unsealing use strip body 5A and the other side's unsealing strip body 5B respectively from the sheet blank 5 of the unsealing strip body X is separated and conveyed, and is arranged and bonded (joint portions 34A, 34B) to the inner surface of the second sheet material 3X.

作為一個例子，切斷機構100具有一對切斷刃。該切斷機構100以規定的寬度切斷從捲筒體沿片材坯料2X、3X的搬運方向不斷地放出的開封用條體的片材坯料5X，從而形成開封用條體5。但是，切斷機構並不限定於該結構。切斷機構只要能夠形成規定寬度的開封用條體5，也可以是由其他結構構成的機構。As an example, the cutting mechanism 100 has a pair of cutting blades. The cutting mechanism 100 cuts the sheet material 5X of the unsealing strip 5X continuously fed out from the roll body along the conveying direction of the sheet materials 2X and 3X at a predetermined width, thereby forming the strip 5 for opening. However, the cutting mechanism is not limited to this structure. As long as the cutting mechanism can form the unsealing strip 5 having a predetermined width, it may be a mechanism having another structure.

作為一個例子，搬運/接合機構101具有保持桿102和接合桿103。保持桿102是通過沿長度方向吸引開封用條體5來對其進行保持，並將開封用條體5從切斷開位置向配置於第二片材坯料3X的配置位置搬運的構件。接合桿103是在開封用條體5的向第二片材坯料3X的配置位置，配置於第二片材坯料3X的相反面側的構件。接合桿103例如是熱封桿。該搬運/接合機構101利用保持桿102保持由於切斷而形成的開封用條體5，並通過保持桿102的移動(在圖8的例子中為升降)進行搬運，將開封用條體5配置於第二片材坯料3X的內表面，然後，利用保持桿102和接合桿103夾著第二片材坯料3X和配置在其內表面的開封用條體5進行熱封，從而形成接合部34。 As an example, the transfer/engagement mechanism 101 has a holding rod 102 and an engaging rod 103 . The holding rod 102 is a member that holds the unsealing strip 5 by sucking it in the longitudinal direction, and transports the unsealing strip 5 from the cutting position to the placement position on the second sheet blank 3X. The joining rod 103 is a member arranged on the opposite side of the second sheet blank 3X at the location of the opening strip 5 facing the second sheet blank 3X. The engaging rod 103 is, for example, a heat-sealing rod. The conveying/joining mechanism 101 holds the unsealing bar 5 formed by cutting with the holding rod 102, and conveys it by moving the holding bar 102 (elevating in the example of FIG. 8 ), arranges the unsealing bar 5 on the inner surface of the second sheet blank 3X, and then heat-seals the second sheet blank 3X and the unsealing bar 5 arranged on the inner surface by the holding bar 102 and the joining bar 103, thereby forming the junction 34.

在此，接合桿103的一端側比保持桿102短。因此，雖然開封用條體5被保持桿102保持，但是未被夾在保持桿102與接合桿103之間的開封用條體5的部分不與第二片材坯料3X接合，從而成為一端部5a以及與一端部5a相鄰的非接合部。 Here, one end side of the engaging rod 103 is shorter than the holding rod 102 . Therefore, although the strip body 5 for unsealing is held by the holding rod 102, the part of the strip body 5 for unsealing that is not sandwiched between the holding rod 102 and the engaging rod 103 is not joined to the second sheet blank 3X, thereby becoming the one end portion 5a and the non-joint portion adjacent to the one end portion 5a.

但是，搬運/接合機構並不限定於這些結構。搬運/接合機構只要能夠使開封用條體5留出一端部5a和非接合部，並與第二片材坯料3X的內表面接合，即，以從游離片33到開封用條體5的另一端側的規定範圍內，能夠使開封用條體5與第二片材坯料3X內表面接合，則也可以是由其他結構構成的機構。 However, the transfer/joint mechanism is not limited to these configurations. As long as the conveying/bonding mechanism can leave one end portion 5a and the non-joint portion of the strip body 5 for unsealing, and join with the inner surface of the second sheet blank 3X, that is, within a predetermined range from the free sheet 33 to the other end side of the strip body 5 for unsealing, the strip body 5 for unsealing can be joined to the inner surface of the second sheet blank 3X, then it may also be a mechanism composed of other structures.

在第三工序中，間歇地搬運第二片材坯料3X。然後，如圖9~圖12所示，通過使配置在搬運路徑上的一方 的開封用條體5A用的外力施加機構104、105和另一方的開封用條體5B用的外力施加機構104、105與第二片材坯料3X的間搬運同步地動作，從而一方的開封用條體5A的一端部5a和另一方的開封用條體5B的一端部5a分別向第二片材坯料3X的相反面側被擠出。 In the third step, the second sheet material 3X is conveyed intermittently. Then, as shown in Figures 9 to 12, by making one of the The external force applying mechanism 104, 105 for the strip body 5A for unsealing and the external force applying mechanism 104, 105 for the strip body 5B for opening are operated synchronously with the conveyance between the second sheet blank 3X, so that the one end 5a of the strip body 5A for opening and the one end 5a of the strip body 5B for opening are extruded to the opposite side of the second sheet blank 3X, respectively.

作為一個例子，外力施加機構具有空氣噴嘴104(圖11)。通過該外力施加機構向游離片33和游離片33中的開封用條體5的部分吹送空氣，從而使游離片33彎曲而形成開口，經由該開口使開封用條體5的一端部5a向第二片材坯料3X的相反面側移動。或者，作為另一個例子，外力施加機構具有進行升降動作的棒105(圖12)。該外力施加機構通過使棒105的頂端與游離片33和游離片33中的開封用條體5的部分接觸，並進一步地壓入棒105，從而使游離片33彎曲而形成開口，經由該開口使開封用條體5的一端部5a向第二片材坯料3X的相反面側移動。 As an example, the external force applying mechanism has an air nozzle 104 ( FIG. 11 ). Air is blown to the part of the free sheet 33 and the strip body 5 for unsealing in the free sheet 33 by the external force applying mechanism, so that the free sheet 33 is bent to form an opening, and the one end 5a of the strip body 5 for unsealing is moved to the opposite side of the second sheet blank 3X through the opening. Or, as another example, the external force applying mechanism has a rod 105 ( FIG. 12 ) that moves up and down. In this external force application mechanism, the top end of the rod 105 is brought into contact with the free piece 33 and the part of the strip body 5 for unsealing in the free piece 33, and further presses the rod 105, so that the free piece 33 is bent to form an opening, and the one end 5a of the strip body 5 for unsealing is moved to the opposite side of the second sheet material 3X through the opening.

但是，外力施加機構並不限定於這些結構。外力施加機構只要能夠使開封用條體5的一端部5a向第二片材坯料3X的相反面側移動，則也可以是由其他結構構成的機構。例如，也可以在第二片材坯料3X的相反面側配置吸引機構或吸附機構，從相反面側吸引或吸附游離片33，使開封用條體5的一端部5a向第二片材坯料3X的相反面側移動。 However, the external force applying mechanism is not limited to these structures. As long as the external force applying mechanism can move the one end portion 5a of the unsealing bar 5 to the side opposite to the second sheet material 3X, it may be a mechanism having another structure. For example, it is also possible to arrange a suction mechanism or an adsorption mechanism on the opposite side of the second sheet blank 3X, to suck or suck the free sheet 33 from the opposite side, and to move the one end 5a of the unsealing bar 5 to the opposite side of the second sheet blank 3X.

第二片材坯料3X如前述地被製造。然後，將第二片材坯料3X捲繞成捲筒狀之後，安裝於制袋裝置。或者， 第二片材坯料3X通過制袋裝置來製造而連續地被搬運，接著，再轉移至由第一片材坯料2X和第二片材坯料3X來製造食品用包裝袋1的工序。 The second sheet blank 3X is produced as described above. Then, after the second sheet material 3X is wound into a roll, it is attached to a bag making device. or, The second raw material sheet 3X is produced by a bag making apparatus and is continuously conveyed, and then shifts to the process of manufacturing the food packaging bag 1 from the first raw material sheet 2X and the second raw material sheet 3X.

製造食品用包裝袋1的工序，例如，如日本特開2005-219319號公報所記載，其是以往所使用的方法。因此，在此不做過多的說明。如圖13所示，該工序包括：iv)工序，一邊使第一片材坯料2X和第二片材坯料3X以內表面彼此相對的方式重合，並在該狀態下間歇地搬運，一邊形成頂部接合部11；v)工序，一邊形成側部接合部12，一邊使食品用包裝袋1獨立地分離；及vi)工序，形成切口部14。經過這些工序，完成食品用包裝袋1。此外，將內片材4與第一片材坯料2X的內表面接合的工序雖然未圖示，但是，是在使第一片材坯料2X和第二片材坯料3X重合之前進行的。 The process of manufacturing the food packaging bag 1 is, for example, described in JP 2005-219319 A, which is a conventionally used method. Therefore, too many descriptions will not be made here. As shown in FIG. 13 , this step includes: iv) a step of overlapping the first sheet material 2X and a second sheet material 3X so that their inner surfaces face each other, and intermittently conveying in this state to form the top joint 11; v) a process of forming the side joints 12 while independently separating the food packaging bag 1; and vi) a process of forming the notch 14. Through these steps, the food packaging bag 1 is completed. In addition, although not shown, the process of bonding 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 superimposed.

這樣，根據本實施方式的製造具有使開封用條體5的一端部5a向第二片材3的外表面側突出而成為開封用的捏持片的開封機構的第二片材坯料3X的方法，能夠以簡單的結構和簡單的方法實現優良的量產性。 In this way, according to the method of manufacturing the second sheet blank 3X having the unsealing mechanism that makes the one end portion 5a of the strip body 5 for unsealing protrude toward the outer surface side of the second sheet 3 to become the pinch piece for unsealing according to the present embodiment, it is possible to realize excellent mass production with a simple structure and a simple method.

另外，開封用條體5的一端部5a延伸的方向與游離片33延伸的方向一致(二者均向上凸起)。因此，能夠以較小的力可靠地使開封用條體5的一端部5a向第二片材坯料3X的相反面側移動。 In addition, the direction in which the one end portion 5a of the strip body 5 for unsealing extends coincides with the direction in which the release piece 33 extends (both are convex upward). Therefore, the one end part 5a of the strip body 5 for opening can be reliably moved to the opposite surface side of the 2nd sheet|seat blank 3X with small force.

此外，本發明並不限定於上述實施方式。本發明在不脫離本發明的主旨的範圍內能夠進行各種的變更。 In addition, this invention is not limited to the said embodiment. Various modifications can be made to the present invention without departing from the gist of the present invention.

切入線和游離片的形狀、結構並不限定於上述實施方式。例如，切入線和游離片的形狀、結構也可以如圖14和圖15所示的形狀、結構。 The shape and structure of the incision line and the free piece are not limited to the above-mentioned embodiment. For example, the shape and structure of the incision line and the free sheet can also be as shown in Figure 14 and Figure 15 .

如圖14(a)所示的結構是將從周邊區域能夠辨識的顯示部50附加在開封用條體5的一端部5a的結構。通常，開封用條體5是透明的。因此，一端部5a保持原來的狀態的話並不顯眼。考慮到商品消費者不容易辨識哪裡是開封用的捏持片。因此，通過對開封用條體5的一端部5a附加印刷顯示部50等，任何商品消費者都能夠容易地辨識開封用的捏持片。 The structure shown in FIG. 14( a ) is a structure in which a display portion 50 recognizable from the peripheral area is added to one end portion 5 a of the strip body 5 for unsealing. Usually, the strip body 5 for unsealing is transparent. Therefore, the one end portion 5a is not conspicuous when it is kept in its original state. Considering that it is not easy for product consumers to identify where is the pinch sheet for opening. Therefore, by adding the printed display part 50 etc. to the one end part 5a of the strip body 5 for unsealing, any consumer of a product can easily recognize the grip piece for unsealing.

作為顯示部，除了由顯示開封用的捏持片的資訊構成的顯示部50以外，代替顯示部50，也可以是如圖14(b)所示的由從周邊區域能夠辨識的單色、圖案等構成的顯示部51。 As the display unit, in addition to the display unit 50 formed by displaying the information of the pinch sheet for opening, instead of the display unit 50, it can also be a display unit 51 composed of a single color, a pattern, etc. that can be recognized from the surrounding area as shown in FIG. 14 (b).

如圖14(c)所示的結構是形成有π字狀的切入線32，即，形成有由沿與長度方向交叉的寬度方向的線(橫線)32b和從比線32b的兩端點靠內側的位置沿長度方向延伸的左右的線(縱線)32c、32c構成的切入線32。根據該結構，在把持開封用條體5的一端部5a沿縱方向(長度方向)開封後，在頭部15上形成朝向寬度方向外側的切入線32d、32d。因此，能夠將開封後的剩餘的第二片材3向左右打開而增大切斷開放部，從而能夠容易地取出食品。 The structure shown in FIG. 14 (c) is formed with a π-shaped cut-in line 32, that is, formed with a cut-in line 32 composed of a line (horizontal line) 32b along the width direction intersecting with the longitudinal direction and left and right lines (longitudinal lines) 32c, 32c extending inwardly from both ends of the line 32b in the longitudinal direction. According to this configuration, after opening in the longitudinal direction (longitudinal direction) by holding one end portion 5a of the strip body 5 for unsealing, the incision lines 32d, 32d facing outward in the width direction are formed on the head portion 15 . Therefore, the remaining second sheet 3 after unsealing can be opened to the left and right to increase the size of the cut open portion, thereby making it possible to easily take out the food.

如圖14(d)所示的結構是形成有分別傾斜的兩條的切入線32e、32e交叉而構成的X字狀的切入線32的結構。根據該結構，在開封後，在頭部15形成有朝向寬度方向外側的切入線32f、32f。因此，能夠將開封後的殘留的第二片材3向左右打開以使其完全張開。 The structure shown in FIG. 14( d ) is a structure in which the X-shaped cutting line 32 formed by intersecting two inclined cutting lines 32 e and 32 e is formed. According to this structure, after unsealing, the incision lines 32f and 32f directed outward in the width direction are formed in the head portion 15 . Therefore, the remaining second sheet 3 after unsealing can be opened to the left and right so as to be completely opened.

如圖15(a)所示的結構是形成有H字狀的切入線32，即，形成有由沿與長度方向交叉的寬度方向的線(橫線)32g和從線32g的兩端點沿長度方向兩方向延伸的左右的線(縱線)32h、32h構成的切入線32的結構。根據該結構，除了向上的游離片33以外，還能夠形成有以與該游離片33相對的方式向下的游離片35。 The structure shown in FIG. 15( a) is formed with an H-shaped incision line 32, that is, a structure in which an incision line 32 composed of a line (horizontal line) 32g in the width direction intersecting with the longitudinal direction and left and right lines (longitudinal lines) 32h, 32h extending in both longitudinal directions from the two ends of the line 32g is formed. According to this 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 .

如圖15(b)所示的結構是形成有向下的切入線32，即，形成有開封用條體5的一端部5a延伸的方向和游離片35延伸的方向相反的切入線32的結構。 The structure shown in Figure 15 (b) is formed with a downward incision line 32, that is, a structure in which the direction in which the one end portion 5a of the strip body 5 extends is opposite to the direction in which the free sheet 35 extends.

另外，切入線可以是沿與長度方向交叉的寬度方向的線(橫線)或者相對於寬度方向傾斜的線等直線或稍微彎曲的線。 In addition, the cutting line may be a straight line or a slightly curved line such as a line (horizontal line) in the width direction intersecting with the longitudinal direction or a line inclined with respect to the width direction.

另外，作為用於能夠使開封用條體5的一端部5a向第二片材3的相反面側移動的結構，可以不是切入線32和游離片33的組合，如圖15(c)所示，也可以是開口36。即使是開口36，用於使開封用條體5的一端部5a向第二片材3的相反面側移動的裝置以及方法也與上述的裝置以及方法基本相同。 In addition, as the structure that can make the one end portion 5a of the strip body 5 for unsealing move to the opposite side of the second sheet 3, it may not be the combination of the incision line 32 and the free piece 33, as shown in FIG. 15( c), it may also be an opening 36. Even for the opening 36, the means and method for moving the one end portion 5a of the unsealing strip 5 to the opposite side of the second sheet 3 are basically the same as those described above.

另外，如圖15(d)所示，第二片材3和開封用條體5的接合部34也可以形成為中心一致。另外，接合部也可以形成在開封用條體5的寬度方向全域。另外，接合部也可以僅形成在開封用條體5的寬度方向兩側緣部。另外，接合部無需形成到開封用條體5的另一端為止。總之，只要開封用條體5不從第二片材3剝離即可。 Moreover, as shown in FIG.15(d), the joint part 34 of the 2nd sheet|seat 3 and the strip body 5 for opening may be formed so that the center may coincide. In addition, the joining portion may be formed over the entire width direction of the strip body 5 for opening. In addition, the junction part may be formed only in the width direction both edge parts of the strip body 5 for opening. In addition, the joining portion does not need to be formed up to the other end of the strip body 5 for unsealing. In short, it is only necessary that the strip for unsealing 5 does not peel off from the second sheet 3 .

另外，接合部並不限定為沿長度方向連續地形成的結構。例如，接合部也可以是由包括游離片33中的部位，在適當的部位實施的點密封件構成的結構。 In addition, the junction part is not limited to the structure formed continuously in the longitudinal direction. For example, the joint portion may be a structure including a point seal at an appropriate position including a position in the free sheet 33 .

另外，切入線並不限定於全切線。切入線只要在通過外力施加機構施加外力時能夠斷裂即可。例如，切入線可以是半切線(半切)或删餘線。 In addition, the cutting line is not limited to the full cutting line. The incision line only needs to be able to break when an external force is applied by the external force applying mechanism. For example, the entry line can be a half cut (half cut) or a puncturing line.

另外，開封用條體並不限定於由一個構件構成。例如，開封用條體也可以是將分體的主體部和一端部一體地接合而成的。 In addition, the strip body for unsealing is not limited to being comprised by one member. For example, the strip for unsealing may be formed by integrally joining a separate main body and one end.

另外，開封機構也可以不設在第二片材3，而設在第一片材2。 In addition, the unsealing mechanism may be provided not on the second sheet 3 but on the first sheet 2 .

另外，「梯形狀」、「長方形狀」、「矩形狀」、「直線」、「中央部」、「端部」、「側部」、「一致」、「平行」之類的表示形狀、部位或狀態的用語，在本發明中，除了指用語本身，還包含與其相近的或類似的意思的「大致」的概念。 In addition, terms such as "trapezoidal", "rectangular", "rectangular", "straight line", "central part", "end part", "side part", "consistent", "parallel", etc. expressing shape, part or state, in the present invention, in addition to referring to the term itself, also include the concept of "approximately" which has a similar or similar meaning.

另外，包裝對象的食品並不限定於三明治。食品只要是能夠容納於食品用包裝袋的形狀即可。例如，食品也可以是麵包、蛋糕、飯團等米飯加工食品等。這樣，食品的種類不受限定。In addition, the foods to be packaged are not limited to sandwiches. The food only needs to be in a shape that can be housed in a packaging bag for food. For example, the food may be processed rice food such as bread, cake, rice ball, or the like. In this way, the type of food is not limited.

另外，本發明的包裝用片材的製造方法也不限定於上述實施方式。本發明在不脫離本發明的主旨的範圍內能夠進行各種的變更。In addition, the manufacturing method of the packaging sheet of this invention is not limited to the said embodiment, either. Various modifications can be made to the present invention without departing from the gist of the present invention.

包裝用片材並不限定於用於特定的包裝方式。包裝用片材可以將在使飯團和紫菜片以分離的狀態下進行包裝的食品用包裝材中的外側片材、枕式包裝用片材、平袋、邊折袋等的一般的袋所使用的片材等用於各種包裝方式的全部物品作為物件。The packaging sheet is not limited to use in a specific packaging form. The packaging sheet can be used for all items used in various packaging methods, such as the outer sheet of food packaging materials in which rice balls and laver sheets are packaged in a separated state, pillow packaging sheets, flat bags, gusset bags, and other general bags.

另外，包裝對象並不限定於食品。包裝物件也可以是除了食品以外的被包裝物。In addition, the object of packaging is not limited to food. A packaged item may be a packaged item other than food.

另外，包裝用片材並不限定於多個連續的長條狀。例如，包裝用片材也可以是單張片狀。In addition, the packaging sheet is not limited to a plurality of continuous strips. For example, the packaging sheet may be in the form of a single sheet.

另外，包裝用片材並不限定於由單一的塑膠片材構成。例如，包裝用片材也可以是紙或紙質片材等其他材質的片材。另外，包裝用片材也可以是例如以將兩張的片材的端部彼此接合而製成一張的片材、將三張的片材的端部彼此依次接合而製成一張的片材的方式，使用多張片材形成一張片材的片材。另外，在該情況下，各片材的材質也可以是不同的。例如，一部分的片材可以不使用塑膠片材而使用紙或紙質片材。In addition, the packaging sheet is not limited to being composed of a single plastic sheet. For example, the packaging sheet may be a sheet made of other materials such as paper or a paper sheet. In addition, the packaging sheet may be formed by using a plurality of sheets to form a single sheet, for example, by joining the ends of two sheets to form a single sheet, and sequentially joining the ends of three sheets to form a single sheet. In addition, in this case, the materials of the respective sheets may be different. For example, paper or paper sheets may be used instead of plastic sheets for some sheets.

1,1A,1B:食品用包裝袋 1, 1A, 1B: food packaging bags

10:袋主體 10: Bag body

11,11A,11B:頂部接合部 11, 11A, 11B: Top junction

12,12A,12B:側部接合部 12, 12A, 12B: Side joints

13:開口部 13: Opening

14,14A:切口部 14,14A: Notch

15:頭部 15: head

2:第一片材(表面片材) 2: The first sheet (surface sheet)

2X:第一片材坯料 2X: first sheet blank

20:主體部 20: Main body

21:頂端部 21: the top part

22:接合部 22: Joint

3:第二片材(背面片材) 3: Second sheet (back sheet)

3X:第二片材坯料 3X: second sheet blank

30:主體部 30: Main body

31:頂端部 31: top part

32,32A,32B:切入線 32, 32A, 32B: cut-in line

32a:端點 32a: Endpoint

32b~32h:切入線 32b~32h: cut-in line

33,33A,33B:游離片 33, 33A, 33B: free flakes

33a:一端緣 33a: one edge

33b:側緣 33b: side edge

34,34A,34B:接合部 34, 34A, 34B: junction

34a:一端緣 34a: one edge

35:游離片 35: free film

36:開口 36: opening

4:內片材 4: inner sheet

5,5A,5B:開封用條體 5, 5A, 5B: strips for opening

5X:開封用條體的片材坯料 5X: sheet blanks for strips for unsealing

5a:一端部(捏持片) 5a: One end (holding piece)

5b:側緣 5b: side edge

50:顯示部 50: display part

51:顯示部 51: display part

100:切斷機構 100: cutting mechanism

101:搬運/接合機構 101: Handling/Jointing Mechanism

102:保持桿 102: Hold bar

103:接合桿 103:Joint rod

104:空氣噴嘴(外力施加機構) 104: Air nozzle (external force application mechanism)

105:棒(外力施加機構) 105: rod (external force application mechanism)

L1:開封用條體5和游離片33的寬度方向的中心線 L1: the centerline in the width direction of the strip body 5 and the free sheet 33 for unsealing

L2:接合部34的寬度方向的中心線 L2: the center line of the width direction of the junction part 34

G1:接合部34的一端緣34a與游離片33的一端緣33a的間隔(非接合部的寬度) G1: Distance between one end edge 34a of the joint portion 34 and one end edge 33a of the free piece 33 (width of the non-joint portion)

G2:開封用條體5的側緣5b與切入線32的端點32a的間隔(間隙部的寬度) G2: the distance between the side edge 5b of the strip body 5 for unsealing and the end point 32a of the incision line 32 (the width of the gap)

S1:中心線L1和中心線L2的偏移量 S1: Offset of centerline L1 and centerline L2

圖1是本發明的一個實施方式的食品用包裝袋的立體分解圖。 圖2是該食品用包裝袋的主視圖。 圖3是該食品用包裝袋的後視圖。 圖4（a）是構成該食品用包裝袋的第二片材的主視圖。圖4（b）是圖4（a）的開封起點部的放大圖。 圖5（a）是從由該食品用包裝袋包裝的食品包裝體的背面側觀察的立體圖。圖5（b）是將該食品包裝體開封時的立體圖。 圖6是該食品用包裝袋的製造工序的說明圖，是對在第二片材坯料上形成切入線的工序的說明圖。 圖7是該食品用包裝袋的製造工序的說明圖，是對在第二片材坯料上配置並接合開封用條體的工序的說明圖。 圖8（a）和圖8（b）是對實施圖7的工序的裝置結構的說明圖。 圖9是該食品用包裝袋的製造工序的說明圖，是對使開封用條體的一端部從切入線向第二片材坯料的相反面側突出的工序的說明圖。 圖10是從圖9的相反面側觀察的說明圖。 圖11（a）～（c）是實施圖9的工序的裝置結構的說明圖。 圖12（a）～（c）是實施圖9的工序的另一裝置結構的說明圖。 圖13是對該食品用包裝袋的製造工序的說明圖，是從第一和第二片材坯料到最終完成食品用包裝袋為止的各工序的說明圖。 圖14（a）～（d）分別是另一個實施方式的食品用包裝袋的主要部分的放大圖。 圖15（a）～（d）分別是又一個實施方式的食品用包裝袋的主要部分的放大圖。 圖16是以往的食品用包裝袋的後視圖。 圖17（a）是從由該食品用包裝袋包裝的食品包裝體的背面側觀察的立體圖，圖17（b）是將該食品包裝體開封時的立體圖。Fig. 1 is an exploded perspective view of a packaging bag for food according to one 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 food packaging bag. Fig. 4(a) is a front view of the second sheet constituting the packaging bag for food. FIG. 4( b ) is an enlarged view of the unsealing starting point in FIG. 4( a ). Fig. 5(a) is a perspective view seen from the back side of the food package packaged in the packaging bag for food. Fig. 5(b) is a perspective view when the food package is unsealed. Fig. 6 is an explanatory view of the manufacturing process of the packaging bag for food, and is an explanatory view of the process of forming a cut line in the second sheet material. Fig. 7 is an explanatory view of the manufacturing process of the food packaging bag, and is an explanatory view of the process of arranging and joining the unsealing strip on the second sheet material. 8( a ) and FIG. 8( b ) are explanatory diagrams of an apparatus configuration for implementing the process of FIG. 7 . 9 is an explanatory view of the manufacturing process of the food packaging bag, and is an explanatory view of the process of protruding one end of the opening strip from the cutting line to the opposite surface side of the second sheet material. FIG. 10 is an explanatory view viewed from the side opposite to FIG. 9 . 11( a ) to ( c ) are explanatory diagrams of an apparatus configuration for implementing the process of FIG. 9 . 12( a ) to ( c ) are explanatory diagrams of another apparatus configuration for implementing the process of FIG. 9 . Fig. 13 is an explanatory diagram of the manufacturing process of the food packaging bag, and is an explanatory diagram of each process from the first and second sheet blanks to the final completion of the food packaging bag. 14( a ) to ( d ) are enlarged views of main parts of a food packaging bag according to another embodiment. 15( a ) to ( d ) are enlarged views of main parts of a packaging bag for food according to yet another embodiment. Fig. 16 is a rear view of a conventional packaging bag for food. FIG. 17( a ) is a perspective view seen from the back side of the food package packaged in the food packaging bag, and FIG. 17( b ) is a perspective view when the food package is unsealed.

國內寄存資訊(請依寄存機構、日期、號碼順序註記) 無 國外寄存資訊(請依寄存國家、機構、日期、號碼順序註記) 無Domestic deposit information (please note in order of depositor, date, and number) none Overseas storage information (please note in order of storage country, institution, date, and number) none

3:第二片材(背面片材) 3: Second sheet (back sheet)

5:開封用條體 5: strips for unsealing

5a:一端部(捏持片) 5a: One end (holding piece)

31:頂端部 31: top part

32:切入線 32: cut-in line

33:游離片 33: free film

34:接合部 34: Joint

104:空氣噴嘴(外力施加機構) 104: Air nozzle (external force application mechanism)

Claims (13)

一種包裝用片材的製造方法，在片材的一面上具有沿規定方向延伸的開封用條體，其中該包裝用片材的製造方法包括：在片材上形成切入線，並且通過形成切入線，形成在彎曲時打開而形成開口的游離片的工序；在片材的一面上，以比開封用條體的一端部更靠內側的部分重疊於游離片上的方式配置開封用條體，在從游離片到開封用條體的另一端側的規定範圍內，將開封用條體與片材的一面接合的工序；及通過向游離片施加外力，使開封用條體的一端部經由游離片所形成的開口向片材的另一面側移動，使開封用條體的一端部從切入線向片材的另一面側突出的工序。 A method of manufacturing a packaging sheet, which has an unsealing strip body extending in a predetermined direction on one side of the sheet material, wherein the manufacturing method of the packaging sheet material includes: forming an incision line on the sheet material, and forming a free sheet that opens when bent to form an opening by forming the incision line; The process of joining the strip for unsealing to one side of the sheet within the specified range on the side; and the process of making one end of the strip for unsealing protrude from the cut-in line to the other side of the sheet by applying an external force to the free sheet to move one end of the strip for unsealing to the other side of the sheet through the opening formed by the free sheet. 一種包裝用片材坯料的製造方法，一邊沿長度方向搬運片材坯料，一邊在片材坯料的一面上以規定的間隔粘貼開封用條體，其中該包裝用片材坯料的製造方法包括：通過切斷機構在片材坯料上形成切入線，並且通過形成切入線，形成在彎曲時打開而形成開口的游離片的工序；通過比切斷機構更靠片材坯料的搬運方向的下游側的搬運/接合機構，在片材坯料的一面上以比開封用條體的一端部更靠內側的部分重疊於游離片上的方式配置開封用條體，在從游離片到開封用條體的另一端側的規定範 圍內，將開封用條體與片材坯料的一面接合的工序；及通過利用比搬運/接合機構更靠片材坯料的搬運方向的下游側的外力施加機構朝向游離片施加外力，使開封用條體的一端部經由游離片所形成的開口向片材坯料的另一面側移動，使開封用條體的一端部從切入線向片材坯料的另一面側突出的工序。 A method of manufacturing a sheet blank for packaging, in which strips for unsealing are pasted at predetermined intervals on one side of the sheet blank while conveying the sheet blank in a longitudinal direction, wherein the manufacturing method of the sheet blank for packaging includes: forming an incision line on the sheet blank by a cutting mechanism, and forming a free sheet that opens when bent to form an opening by forming the incision line; The unsealing strip is arranged on one side in such a way that the inner part of the unsealing strip is superimposed on the release sheet. Within the range, the process of bonding the unsealing strip body to one side of the sheet blank; and applying an external force toward the free sheet by using an external force applying mechanism on the downstream side of the conveying direction of the sheet blank than the conveying/joining mechanism, so that one end of the unsealing strip body is moved to the other side of the sheet blank through the opening formed by the free sheet, and one end of the unsealing strip body is protruded from the cutting line to the other side of the sheet blank. 如請求項2之包裝用片材坯料的製造方法，其中外力施加機構可以是將空氣從空氣噴嘴吹向游離片的機構、使棒的頂端與游離片接觸並將棒壓入的機構、吸附或吸引游離片的機構中的任一種。 A method for manufacturing a sheet blank for packaging as in claim 2, wherein the external force applying mechanism can be any one of a mechanism for blowing air from an air nozzle to the free sheet, a mechanism for making the top of the rod contact the free sheet and pressing the rod in, or a mechanism for absorbing or attracting the free sheet. 如請求項2之包裝用片材坯料的製造方法，其中接合工序包括以在接合部的一端緣與切入線之間形成有規定寬度的非接合部的方式將開封用條體和游離片接合的工序。 The method of manufacturing a packaging sheet blank according to claim 2, wherein the joining step includes joining the unsealing strip and the free sheet so that a non-joining portion of a predetermined width is formed between one end edge of the joining portion and the incision line. 如請求項2至4中任一項所述的包裝用片材坯料的製造方法，其中接合工序包括使開封用條體的從寬度方向的中心偏移的部位沿開封用條體的長度方向接合的工序。 The method of manufacturing a packaging sheet blank according to any one of Claims 2 to 4, wherein the joining step includes joining a portion of the unsealing strip deviated from the center in the width direction along the longitudinal direction of the unsealing strip. 一種食品用包裝袋，具有：袋主體，使具有與一端側相比另一端側寬度更寬的形狀的一對片材重合，由一端側的頂部接合部和兩側緣的側部接合部對三方進行密封，另一端側成為開口部；及頭部，由從頂部接合 部突出的各片材的突出片構成，其中一方的片材在頭部具有通過形成切入線而形成游離片，即，在彎曲時打開而形成開口的游離片；並且在一方的片材的內表面上從游離片到片材的另一端側具有開封用條體，開封用條體的一端部從切入線向一方的片材的外表面側突出而成為開封用的捏持片。 A packaging bag for food, comprising: a bag body in which a pair of sheets having a wider width than one end side are superimposed, three sides are sealed by a top joint portion on one end side and side joint portions on both side edges, and the other end side becomes an opening; and a head portion joined from the top The protruding piece of each sheet protruding from the top is constituted, wherein one sheet has a free piece formed by forming an incision line at the head, that is, a free piece that is opened to form an opening when bent; 如請求項6之食品用包裝袋，其中切入線具有兩端點與頂部接合部接近的形狀，由此，游離片具有以切入線的兩端點間為固定端，以與頂部接合部分離的一端側為自由端的形狀。 For example, the food packaging bag according to claim 6, wherein the cut-in line has a shape in which both ends are close to the top joint, so that the free sheet has a shape in which the end between the two ends of the cut-in line is the fixed end, and the end separated from the top joint is the free end. 如請求項7之食品用包裝袋，其中開封用條體從游離片到開封用條體的另一端側的規定範圍內與一方的片材的內表面接合，在接合部的一端緣與切入線之間存在規定寬度的非接合部。 The food packaging bag according to claim 7, wherein the strip for unsealing is bonded to the inner surface of one sheet within a predetermined range from the free sheet to the other end side of the strip for unsealing, and a non-joint portion of a predetermined width exists between one end edge of the joint portion and the cut-in line. 如請求項7或8之食品用包裝袋，其中開封用條體的寬度小於切入線的兩端點間的間隔，由此，在開封用條體的各側緣與切入線的各端點之間存在規定寬度的間隙部。 The food packaging bag according to claim 7 or 8, wherein the width of the strip for unsealing is smaller than the distance between the two ends of the cut-in line, so that there is a gap of predetermined width between each side edge of the strip for unsealing and each end point of the cut-in line. 如請求項6之食品用包裝袋，其中開封用條體的一端部具有從該一端部的周邊區域能夠辨識的顯示部。 The food packaging bag according to claim 6, wherein one end of the unsealing strip has a display portion that can be recognized from a peripheral area of the one end. 一種包裝用片材的製造方法，在片材的一面 上具有沿規定方向延伸的開封用條體，其中該包裝用片材的製造方法包括：在片材上形成切入線的工序；在片材的一面上，以比開封用條體的一端部更靠內側的部分重疊於切入線上的方式配置開封用條體，在從切入線到開封用條體的另一端側的規定範圍內，將開封用條體與片材的一面接合的工序；及通過向切入線施加外力，使開封用條體的一端部經由切入線所形成的開口向片材的另一面側移動，使開封用條體的一端部從切入線向片材的另一面側突出的工序。 A method of manufacturing a sheet for packaging, on one side of the sheet The packaging sheet has an unsealing strip body extending in a predetermined direction, wherein the manufacturing method of the packaging sheet includes: forming a cut line on the sheet; arranging the unsealing strip body on one side of the sheet so that a part inner than one end of the unsealing strip body overlaps the cut line; A step of moving one end of the bar body to the other side of the sheet through the opening formed by the cut line, and protruding one end of the strip for unsealing from the cut line to the other side of the sheet. 一種包裝用片材的製造方法，在片材的一面上具有沿規定方向延伸的開封用條體，其中該包裝用片材的製造方法包括：在片材上形成開口的工序；在片材的一面上，以比開封用條體的一端部更靠內側的部分重疊於開口上的方式配置開封用條體，在從開口到開封用條體的另一端側的規定範圍內，將開封用條體與片材的一面接合的工序；及通過向開口施加外力，使開封用條體的一端部經由開口向片材的另一面側移動，使開封用條體的一端部從開口向片材的另一面側突出的工序。 A method of manufacturing a packaging sheet, which has an opening strip extending in a predetermined direction on one side of the sheet, wherein the manufacturing method of the packaging sheet includes the steps of forming an opening in the sheet; arranging the opening strip on one side of the sheet so that a part more inside than one end of the opening strip overlaps the opening; The process of moving one end of the strip for unsealing to the other side of the sheet through the opening by an external force, and protruding the one end of the strip for opening from the opening to the other side of the sheet. 一種食品用包裝袋，具有：袋主體，使具有與一端側相比另一端側寬度更寬的形狀的一對片材重合，由一端側的頂部接合部和兩側緣的側部接合部對三方進 行密封，另一端側成為開口部；及頭部，由從頂部接合部突出的各片材的突出片構成，其中一方的片材在頭部具有開口，並且在一方的片材的內表面上從開口到片材的另一端側具有開封用條體，開封用條體的一端部從開口向一方的片材的外表面側突出而成為開封用的捏持片。 A packaging bag for food comprising: a bag main body in which a pair of sheets having a shape wider than one end side is superimposed, and three sides are joined by a top joint portion on one end side and side joint portions on both side edges. Line sealing, the other end side becomes opening; And head, is made of the protruding piece of each sheet protruding from the top junction, wherein one sheet has opening at the head, and on the inner surface of one sheet from opening to the other end side of the sheet, there is a bar for unsealing, and one end of the bar for unsealing protrudes from the opening to the outer surface side of one sheet to become a pinch piece for unsealing.
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