TW202103906A

TW202103906A - Method of manufacturing packaging sheet, method of manufacturing raw material for packaging sheet, and food packaging bag

Info

Publication number: TW202103906A
Application number: TW108148329A
Authority: TW
Inventors: 神谷知毅
Original assignee: 日商朋和產業股份有限公司
Priority date: 2019-02-19
Filing date: 2019-12-30
Publication date: 2021-02-01
Also published as: JP7487384B2; CN111936305B; JP2023106593A; WO2020170483A1; JP2020132275A; JP7290595B2; TWI808291B; CN111936305A

Abstract

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

Description

包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 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 that are processed into a triangular shape (mainly a right-angled triangular shape) or a shape similar to the side shape, and have a three-dimensional shape with a predetermined thickness or width. Food packaging bags used for packaging such foods 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 main body 10' and a head 15'. The bag main body 10' is configured by superimposing a pair of sheets 2'and 3'having a shape wider than the other end on the one end side, and is composed of a top joint 11' on one end side and side portions of both side edges. The joining parts 12', 12' seal three directions, and the other end side becomes an opening 13'. The head 15' is configured to join and integrate the protruding pieces of the respective sheets 2'and 3'protruding from the top joint 11' at appropriate positions.

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’。The second sheet 3'in the head 15' is formed with, for example, an inverted U-shaped cut line 32', and a pinch piece 33' for opening with the cut line 32' as an outline is formed. On the inner surface of the second sheet 3', a strip body 5'for opening such as a tearable tape is joined from the pinch sheet 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 pinching piece 33' is pinched and pulled down. Then, the strip body 5'for unsealing is pulled to form a cut and open part in the second sheet 3', and the food can be taken out from the cut and open part.

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, under the influence of the accuracy of the manufacturing device of the food packaging bag 1'(variation in joining conditions, etc.), the second sheet 3'and the strip body 5'for opening may not be sufficiently joined. For this type of food packaging bag 1', when the pinch sheet 33' is pulled down during opening, a part of the pinch sheet 33' or the second sheet 3'continuous with it is peeled from the strip body 5'for opening, and only the first The two sheets 3'are pulled, causing a problem that they cannot be opened properly. Moreover, the stronger the bonding strength of the top bonding portion 11', the more obvious this problem is. Therefore, the existing practice is to apply a local coating agent on the joint surface before joining, so that the joint strength of the top joint portion 11' is not 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, the food packaging bag described in Patent Document 1 has one end of the strip for opening that protrudes toward the outer surface of the head. Since the strip is used for opening, 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 aforementioned 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Existing technical documents Patent documents Patent Document 1: Utility Model No. 3072028 Bulletin

發明所要解決的課題The problem to be solved by the invention

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, with regard to the food packaging bag described in Patent Document 1, it is not clear what kind of processing is applied to the sheet to make the one end portion of the strip for opening protrude toward the outer surface side of the sheet. In addition, with regard to the food packaging bag described in Patent Document 1, it is not clear how to make one end of the strip for opening protrude toward the outer surface side of the sheet. Therefore, it is impossible to mass-produce food packaging bags that are consumed in large quantities.

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。解決問題的技術手段Therefore, the present invention was made in view of the above circumstances, and its object is to provide an unsealing mechanism having one end of the unsealing strip protruding to serve as a pinch sheet for unsealing, and a method for manufacturing a packaging sheet that is excellent in mass productivity , Manufacturing method of sheet blanks for packaging and food packaging bags. Technical means to solve the problem

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遊離片的工序；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遊離片上的方式配置開封用條體，在從遊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；及通過向遊離片施加外力，使開封用條體的一端部經由遊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 method of manufacturing a packaging sheet of the present invention has a strip for unsealing extending in a predetermined direction on one side of the sheet, wherein The manufacturing method of the packaging sheet includes: A process of forming a cut line on the sheet, and by forming the cut line, a free sheet that opens when bent to form an opening; On one side of the sheet, the strip for opening is placed on the free sheet so that a part more inside than one end of the strip for opening is placed on the free sheet, within a predetermined range from the free sheet to the other end of the strip for opening , The process of joining the strip for unsealing to one side of the sheet; and By applying external force to the free sheet, one end of the strip for opening is moved to the other side of the sheet through the opening formed by the free sheet, and one end of the strip for opening is protruded from the cut line to the other side of the sheet.的processes.

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遊離片的工序；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遊離片上的方式配置開封用條體，在從遊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遊離片施加外力，使開封用條體的一端部經由遊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, in the method of manufacturing a sheet blank for packaging of the present invention, while conveying the sheet blank in the longitudinal direction, the strip for opening is pasted at predetermined intervals on one surface of the sheet blank, wherein The manufacturing method of the sheet blank for packaging includes: A process of forming a cutting line on the sheet blank by a cutting mechanism, and forming a cutting line to form a free piece that opens when it is bent to form an opening; The conveying/joining mechanism on the downstream side of the conveying direction of the sheet blank than the cutting mechanism is arranged to overlap the free piece on one side of the sheet blank with a part inside than one end of the strip for opening. The strip for opening is a process of joining the strip for opening to one side of the sheet blank within a prescribed range from the free sheet to the other end of the strip for opening; and By using the external force applying mechanism on the downstream side of the conveying direction of the sheet blank than the conveying/joining mechanism to apply an external force to the free sheet, one end of the strip for opening is directed to the other side of the sheet blank through the opening formed by the free sheet The step of moving sideways to make one end of the strip for opening protrude from the cutting line to the other side of the sheet blank.

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遊離片，即，在彎曲時打開而形成開口的遊離片；並且在一方的片材的內表面上從遊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 body in which a pair of sheets having a shape wider than the other end side is superimposed, and the top joint part on the one end side and the side of both side edges are superimposed. The joint part seals the three sides, and the other end side becomes an opening; and the head part is composed of protruding pieces of each sheet protruding from the top joint part, wherein One of the sheets has a free piece formed on the head by forming a cut line, that is, a free piece that opens to form an opening when bent; and on the inner surface of the one sheet, from the free piece to the other end side of the sheet With strips for opening, One end of the strip for opening protrudes from the cut line to the outer surface side of one sheet to become a pinch piece for opening.

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 of the present invention has an opening strip extending in a predetermined direction on one surface of the sheet, wherein The manufacturing method of the packaging sheet includes: The process of forming a cutting line on the sheet; On one side of the sheet, the strip for opening is placed on the cutting line so that a portion more inside than one end of the strip for opening is placed on the cutting line, within a predetermined range from the cutting line to the other end of the strip for opening , The process of joining the strip for unsealing to one side of the sheet; and By applying an external force to the cutting line, one end of the strip for opening is moved to the other side of the sheet through the opening formed by the cutting line, so that one end of the strip for opening protrudes from the cutting line to the other side of the sheet的processes.

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, another method of manufacturing a packaging sheet of the present invention has an opening strip extending in a predetermined direction on one surface of the sheet, wherein The manufacturing method of the packaging sheet includes: The process of forming an opening on the sheet; On one side of the sheet, the strip for opening is arranged so that a part inside the one end of the strip for opening overlaps the opening, and within a predetermined range from the opening to the other end of the strip for opening, The process of joining the strip for opening to one side of the sheet; and A step of moving one end of the strip for opening to the other side of the sheet through the opening by applying an external force to the opening, and protruding one end of the strip for opening 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。發明效果In addition, another food packaging bag of the present invention has: a bag body in which a pair of sheets having a shape wider than the other end side is superimposed on one end side, and a top joint part on one end side and both side edges are superimposed. The side joint part of the seals the three sides, and the other end side becomes an opening; and the head part is composed of the protruding pieces of each sheet protruding from the top joint part, wherein One of the sheets has an opening in the head, and on the inner surface of one of the sheets, there is a strip for unsealing from the opening to the other end of the sheet, One end of the strip for opening protrudes from the opening to the outer surface side of one sheet to become a pinch piece for opening. Invention effect

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, it is possible to achieve excellent mass productivity 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 an embodiment of the food packaging bag of the present invention, a food packaging bag used for sandwich packaging 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 of this embodiment has a bag main body 10 and a head 15. The bag body 10 is configured by superimposing a pair of sheets (first sheet 2 and second sheet 3) which have a shape with a wider width on the other end side than one end side. The top joint part 11 and the side joint parts 12 and 12 on both side edges seal three directions, and the other end side becomes an opening 13. The head 15 is configured such that the projecting pieces of the respective sheets 2 and 3 projecting from the top joining portion 11 are joined to each other at appropriate positions to be integrated. In addition, the first sheet is also referred to as a surface 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 composed of a plastic sheet having heat-weldability such as polyethylene or polypropylene. The first sheet 2 is configured to have a main body portion 20 and a tip portion 21 (the above-mentioned protruding piece). The main body portion 20 has a shape that gradually widens 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 composed of a plastic sheet having heat-weldability such as polyethylene and polypropylene. The second sheet 3 is configured to have a main body portion 30 and a tip portion 31 (the above-mentioned protruding piece). The main body portion 30 has a shape that gradually widens 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 and 30 are trapezoidal, and the tip parts 21 and 31 are rectangular. Therefore, one end of the main body portions 20, 30 (and the other end of the tip portions 21, 31 that coincide with the same) is in the direction from one end of the sheets 2, 3 to the other end (hereinafter referred to as the "longitudinal direction") Orthogonal straight lines. In other words, the one ends of the main body portions 20 and 30 have a linear shape parallel to the direction orthogonal to the longitudinal direction (hereinafter, referred to as the "width direction"). The side edges of the main body portions 20 and 30 are linearly inclined with respect to the longitudinal direction. The edges on both sides of the tip portions 21 and 31 are linear parallel to the longitudinal direction. However, the other end sides of the side edges of the main body portions 20 and 30 are lacking due to the notch portion 14. As a result, the width of the other end sides of the main body portions 20 and 30 is narrowed by the amount of the cutout portion 14.

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 portion 11 is formed by heat-sealing the first and second sheets 2 and 3 along one end of the main body portions 20 and 30. The side joining portion 12 is formed by heat-sealing the side edges (hypotenuses) of the main body portions 20 and 30 and the side edges (longitudinal edges) of the tip portions 21 and 31. In this embodiment, the top joint portion 11 is formed by welding using a heat sealing rod, and is a belt-shaped sealing portion having a predetermined width in the longitudinal direction. The side joining portion 12 is a wire sealing portion formed by fusing. Specifically, the top joint portion 11 has a width of several millimeters or more. The width of the side joint portion 12 is 1 mm or less.

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 body 10 configured in this way is a food container. The inner sheet 4 is stuck on 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 portion is joined by a point seal or the like at two places (joining portion 22), and one end side is a free end. Thus, even if the food moves in the accommodating part, the inner sheet 4 closely adheres to the surface of the food and follows the movement. Therefore, the first sheet 2 will not be contaminated, and its appearance will not be 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，從而形成有遊離片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，遊離片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, a cutting line 32 is formed on the second sheet 3 in the head 15. Furthermore, on the second sheet 3 in the head 15, by forming a cut line 32, a free piece 33 is formed. The cut line 32 is a shape where the two end points 32a and 32a are close to the top joint portion 11. The free piece 33 is configured to have a cut line 32 as a contour line, a fixed end between two end points 32a and 32a, and one end side 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 in the width direction and a pair of left and right side edges 33b, 33b in the length direction, and is formed as an upward tongue piece.

在第二片材3的內表面，從遊離片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, from the free sheet 33 to the other end side of the second sheet 3, a strip body 5 for opening is provided. The strip body 5 for opening is provided in the center part of the width direction of the 2nd sheet material 3 along the longitudinal direction, for example. The strip body 5 for opening is joined to the inner surface of the second sheet 3 by heat sealing, bonding, or the like (joining portion 34). As an example, after coating the coating agent on the inner surface (opposite to the second sheet 3), the strip 5 for opening is thermally bonded and self-adhesive to the inner surface of the second sheet 3. Join. The strip body 5 for opening is, for example, a tearable tape, a string, or the like. In this embodiment, the strip 5 for opening is a strip-shaped tearable tape with a width of 5 mm or more or 10 mm or more. Tear-off tape is made by combining biaxially stretched polyester or polyethylene terephthalate (PET), polyethylene (PE), polypropylene (PP), biaxially stretched polypropylene (OPP), etc. The weldable plastic sheet is cut 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，以遊離片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 5a of the strip body 5 for opening and the second sheet 3 are not joined. One end portion 5a of the strip body 5 for opening protrudes from the cut line 32 to the outer surface side of the second sheet 3 and becomes a pinch piece for opening. As a result, when one end 5a of the strip 5 for opening is pulled down while pinching the strip 5 for opening, the strip 5 for opening is pulled, and the second sheet 3 is cut with a predetermined width with the free sheet 33 as the starting point for opening. In the second sheet 3, a cut-open portion is formed. If the protrusion amount of the one end 5a of the strip body 5 for opening is short, it will be difficult to pinch. Conversely, if it is long, it is easy to break, which may hinder the portability of the manufacturing device. Therefore, the protrusion amount of the one end 5a of the strip body 5 for opening is set to the range of 5 mm or more, 10 mm or more, or 15 mm or more, and 25 mm or less or 20 mm or less.

如圖4（b）所示，開封用條體5也與遊離片33接合，與遊離片33一體化。但是，開封用條體5不會接合至遊離片33的一端緣33a。因此，在接合部34的一端緣34a與遊離片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，則能夠捏住遊離片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 strip body 5 for opening is also joined to the free sheet 33 and is integrated with the free sheet 33. However, the strip body 5 for opening is not joined to the one end edge 33a of the free piece 33. As shown in FIG. Therefore, between the one end edge 34a of the joined portion 34 and the one end edge 33a of the free piece 33, there is a non-joined portion having a width G1. If the non-joining part is not provided or the width G1 is small, it may be affected by the accuracy of the manufacturing apparatus of the food packaging bag 1 (snaking of the sheet material, etc.), and the joining may cross the cut line 32. In this case, the one end portion 5a of the strip body 5 for opening is locked, and the one end portion 5a cannot be made to protrude from the cut line 32 to the outer surface side of the second sheet 3. Conversely, if the width G1 is large, the free piece 33 can be pinched, but there is a possibility of accidental opening operation in which pinching and unintentional opening may occur. In this case, of course, the strip body 5 for unsealing is not used, but only the second sheet 3 is pulled, and the unsealing cannot be performed appropriately. Therefore, the width G1 of the non-joint portion is set to 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 with respect to the amplitude as a manufacturing error.

開封用條體5的寬度小於遊離片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與遊離片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 body 5 for opening is smaller than the width of the fixed end of the free piece 33 (that is, the interval between the two end points 32a and 32a of the cut line 32). Therefore, between each side edge 5b of the strip body 5 for opening and each side edge 33b of the free piece 33 or each end point 32a of the cut line 32, there exists a gap part of width G2. If the gap is not provided or the width G2 is small, one end 5a of the strip body 5 for opening is caught by the cut line 32, and it may not be possible to make the one end 5a 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 device of the food packaging bag 1 (sticking position deviation, etc.), the strip body 5 for opening is caught by the cutting line 32, and wrinkles are generated, which may cause product failure. Therefore, the width G2 of the gap portion is set to 1 mm or more or 1.5 mm or more with respect to the amplitude as a 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以遊離片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的其他部分從遊離片33開始沿著第二片材3的內表面。When packaging food, open the opening 13 and insert the food into the bag body 10, then fold the excess sheet of the opening 13 (the sheet exposed from the bottom surface of the food) appropriately to close the opening 13 and stick it. Label or tape to seal the opening 13. In this way, the food package as shown in Fig. 5(a) is completed. In this food packaging body, one end 5a of the strip body 5 for unsealing has the free sheet 33 as a fixed end, and one end is a free end, from the cutting line 32 to the outer surface side of the second sheet 3 in the head 15 prominent. On the other hand, the other part of the strip body 5 for unsealing runs along the inner surface of the second sheet 3 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 the food is eaten, as shown in FIG. 5(b), one end 5a of the protruding strip 5 for opening is pinched and pulled down. Then, the strip body 5 for opening is pulled, and a cut-open part is formed in the 2nd sheet 3, and foodstuff can be taken out from this cut-open part. In addition, in the food packaging body, the one end portion 5a of the strip body 5 for opening is slightly lifted and separated from the outer surface of the head 15 and is easily pinched. Alternatively, by bending the head 15, the one end portion 5 a of the strip body 5 for opening is sufficiently separated from the head 15 and it is easier to be pinched. 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 food packaging bag of this embodiment has the above-mentioned structure. Next, the manufacturing method of the food packaging bag 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 processes: As shown in FIGS. 6 to 12, an unsealing having one end 5a of the unsealing strip body 5 protruding to the outer surface side of the second sheet 3 to become a pinch sheet for unsealing The process of the second sheet blank 3X of the mechanism; as shown in FIG. 13, the process of manufacturing the 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 a food packaging bag 1 having a trapezoidal shape is manufactured in such a manner that the conveying direction of the sheet blanks 2X, 3X is transversely and alternately opposite to the direction according to its shape. That is, food packaging bags 1 in which openings 13 are formed on one side in the width direction intersecting with the conveying directions of sheet blanks 2X and 3X and heads 15 are formed on the other side in the width direction are alternately manufactured. The food packaging bag 1 in which an opening 13 is formed on the other side in the width direction and a head 15 is formed on one side in the width direction. Therefore, in the following description and drawings, for convenience of explanation, the structure of the former food packaging bag 1 is denoted by the term "one side", and the element symbol is denoted by "A". In addition, the latter food packaging The structure of the bag 1 is marked with the term "other party", and "B" is marked after the component symbol.

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而形成遊離片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遊離片33上的方式配置開封用條體5，在從遊離片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，通過向遊離片33施加外力，更詳細而言，通過向遊離片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經由遊離片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 sheet blank 3X is one embodiment of the manufacturing method of the packaging sheet and the manufacturing method of the packaging sheet blank of the present invention. This process includes: i) the process, as shown in FIG. 6, forming a cutting line 32 on the second sheet blank 3X, in more detail, forming a cutting line 32 on the second sheet blank 3X, and by forming a cutting line 32 to form a free sheet 33 (first step); ii) step, as shown in FIGS. 7 and 8, on the inner surface of the second sheet blank 3X, to be inside than one end 5a of the strip body 5 for opening The strip body 5 for opening is arranged so that the part of the opening is overlapped on the free sheet 33, and the strip body 5 for opening and the second sheet blank 3X are arranged within a predetermined range from the free sheet 33 to the other end side of the strip body 5 for opening The inner surface joining (the second step); and iii) the step, as shown in Figures 9 to 12, by applying an external force to the free sheet 33, more specifically, by applying an external force to the free sheet 33 in the strip body 5 for opening Partial application of external force moves one end 5a of the strip 5 for opening to the opposite surface (outer surface) of the second sheet blank 3X through the opening formed by the free piece 33, and the one end 5a of the strip 5 for opening is moved from The cut line 32 protrudes to the opposite surface side of the second sheet material 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, the cutting mechanism (not shown) for one cutting line 32A and the cutting mechanism (not shown) for the other cutting line 32B arranged on the conveying path are synchronized with the intermittent conveyance of the second sheet blank 3X As shown in FIG. 6, one cut line 32A and the other cut 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, the cutting mechanism has a receiving roller and a tool. The cutting mechanism causes the tool to reciprocate on the receiving roller, so that the cutting edge provided on the surface of the tool abuts the receiving roller, thereby forming a cutting line 32 on the second sheet material 3X. 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 blank 3X, it may be a mechanism composed of 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 FIGS. 7 and 8, the cutting/conveying/joining mechanisms 100, 101 for the strip 5A for unsealing on one side and the cutting/conveying/joining mechanisms 100, 101 for the strip 5B for unsealing on the other side of the transport path The breaking/conveying/joining mechanisms 100 and 101 operate synchronously with the intermittent conveyance of the second sheet blank 3X, so that one of the strips for opening 5A and the other strip for opening 5B are separated from the sheets of strips for opening. The blank 5X is separated and transported, and is arranged and joined (joint portions 34A, 34B) on the inner surface of the second sheet blank 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 blank 5X of the strip for opening which is continuously discharged from the roll body in the conveying direction of the sheet blanks 2X and 3X with 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 strip body 5 for opening of a predetermined width, it may be a mechanism constituted by 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 conveying/joining mechanism 101 has a holding rod 102 and an engaging rod 103. The holding rod 102 is a member that holds the strip 5 for opening by sucking it in the longitudinal direction, and conveys the strip 5 for opening from the cutting and opening position to the arrangement position arranged in the second sheet material 3X. The joining rod 103 is a member arranged on the opposite surface side of the second sheet material 3X at the arrangement position of the opening strip body 5 on the second sheet material 3X. The joining rod 103 is, for example, a heat-sealing rod. The conveying/joining mechanism 101 uses a holding rod 102 to hold the strip 5 for unsealing formed by cutting, and conveys it by the movement of the holding rod 102 (lifting and lowering in the example of FIG. 8), and disposes the strip 5 for opening On the inner surface of the second sheet blank 3X, the second sheet blank 3X and the unsealing strip 5 arranged on the inner surface are heat-sealed by the holding rod 102 and the joining rod 103 to form the joint 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, the one end side of the engaging rod 103 is shorter than the holding rod 102. Therefore, although the strip body 5 for opening is held by the holding rod 102, the part of the strip body 5 for opening that is not sandwiched between the holding rod 102 and the joining rod 103 is not joined to the second sheet material 3X, and becomes one end. 5a and a non-joining part adjacent to one end 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，以從遊離片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 conveying/joining mechanism is not limited to these structures. As long as the conveying/joining mechanism can leave the one end 5a and the non-joining part of the strip 5 for opening, and join it with the inner surface of the second sheet blank 3X, that is, from the free piece 33 to the other part of the strip 5 for opening The strip body 5 for opening and the inner surface of the second sheet material 3X can be joined to the inner surface of the second sheet blank 3X within the predetermined range on the one end side, but it may be a mechanism composed of another structure.

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 FIGS. 9 to 12, the external force applying mechanisms 104, 105 for one unsealing strip 5A and the other external force applying mechanisms 104, 105 for the other unsealing strip 5B are arranged on the conveying path. 105 operates synchronously with the inter-conveyance of the second sheet blank 3X, so that one end 5a of the unsealing strip 5A and the other end 5a of the other unsealing strip 5B are respectively opposite to the second sheet blank 3X The face side is extruded.

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遊離片33和遊離片33中的開封用條體5的部分吹送空氣，從而使遊離片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的頂端與遊離片33和遊離片33中的開封用條體5的部分接觸，並進一步地壓入棒105，從而使遊離片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 application mechanism has an air nozzle 104 (FIG. 11 ). The external force applying mechanism blows air to the free piece 33 and the portion of the strip 5 for opening of the free piece 33 to bend the free piece 33 to form an opening. Through the opening, one end 5a of the strip 5 for opening is directed toward the first The opposite surface side of the two-sheet blank 3X moves. Or, as another example, the external force applying mechanism has a rod 105 (FIG. 12) that performs a lifting operation. This external force applying mechanism makes the tip of the rod 105 contact the free piece 33 and the part of the strip body 5 for unsealing of the free piece 33, and further presses the rod 105, thereby bending the free piece 33 to form an opening, and passing through the opening The one end part 5a of the strip body 5 for opening is moved to the opposite surface side of the 2nd sheet material 3X.

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遊離片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 application mechanism is not limited to these structures. As long as the external force applying mechanism can move the one end portion 5a of the strip body 5 for opening to the side opposite to the second sheet blank 3X, it may be a mechanism composed of another structure. For example, a suction mechanism or a suction mechanism may be arranged on the opposite surface side of the second sheet blank 3X, and the free sheet 33 may be sucked or adsorbed from the opposite surface side, so that one end 5a of the strip for opening 5 is directed toward the second sheet blank 3X. Move on the opposite side.

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 manufactured as described above. Then, after winding the second sheet material 3X into a roll shape, it is attached to a bag making device. Alternatively, the second sheet material 3X is manufactured by a bag making device and is continuously conveyed, and then transferred to the process of manufacturing the food packaging bag 1 from the first sheet material 2X and the second sheet material 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 packaging bag 1 for food is, for example, as described in JP 2005-219319 A, which is a conventionally used method. Therefore, I will not give too much explanation here. As shown in Figure 13, this step includes: iv) a step of superimposing the first sheet material 2X and the second sheet material 3X so that their inner surfaces face each other, and carrying them intermittently in this state to form a top joint Part 11; v) process, while forming the side joining part 12, while separately separating the food packaging bag 1; and vi) process, forming the cut part 14. Through these processes, the food packaging bag 1 is completed. In addition, although the process of joining the inner sheet|seat 4 and the inner surface of the 1st sheet material 2X is not shown in figure, it is performed before superposing|superposing the 1st sheet material 2X and the 2nd sheet material 3X.

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 present embodiment, a method for manufacturing a second sheet material 3X having an opening mechanism for making the one end portion 5a of the strip body 5 for unsealing protrude to the outer surface side of the second sheet 3 to become a pinch sheet for unsealing , Can achieve excellent mass production with a simple structure and simple method.

另外，開封用條體5的一端部5a延伸的方向與遊離片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 extending direction of the one end portion 5a of the strip body 5 for opening coincides with the extending direction of the free piece 33 (both of which are convex upward). Therefore, the one end portion 5a of the strip body 5 for opening can be reliably moved to the opposite surface side of the second sheet material 3X with a 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, the present invention is not limited to the above-mentioned embodiment. The present invention can be modified in various ways without departing from the gist of the present invention.

切入線和遊離片的形狀、結構並不限定於上述實施方式。例如，切入線和遊離片的形狀、結構也可以如圖14和圖15所示的形狀、結構。The shape and structure of the cut line and the free piece are not limited to the above-mentioned embodiment. For example, the shape and structure of the cut line and the free piece may be as shown in FIGS. 14 and 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 that can be seen from the peripheral area is added to one end portion 5 a of the strip body 5 for opening. Usually, the strip body 5 for opening is transparent. Therefore, it is not conspicuous if the one end 5a remains in the original state. Taking into account that it is not easy for the consumer of the product to recognize the pinch piece for opening. Therefore, by adding a print display portion 50 or the like to one end portion 5a of the strip body 5 for opening, any consumer of the goods can easily recognize the pinch piece for opening.

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 section, in addition to the display section 50 composed of displaying information on the pinch sheet for opening, instead of the display section 50, it may be a monochrome or pattern that can be recognized from the surrounding area as shown in FIG. 14(b). The display unit 51 of the same configuration.

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 Figure 14(c) is formed with a π-shaped cut line 32, that is, a line (horizontal line) 32b in the width direction intersecting the length direction and from both ends of the line 32b The cut line 32 is formed of left and right lines (longitudinal lines) 32 c and 32 c extending in the longitudinal direction at a position closer to the inner side. According to this configuration, after the one end portion 5a of the strip body 5 for unsealing is grasped and opened in the longitudinal direction (longitudinal direction), the head 15 is formed with the cut lines 32d and 32d facing the outside in the width direction. Therefore, the remaining second sheet 3 after unsealing can be opened to the left and right to increase the cut opening portion, and the food can be easily taken out.

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 an X-shaped cutting line 32 formed by intersecting two inclined cutting lines 32e and 32e is formed. According to this structure, after unsealing, the head 15 is formed with the cut lines 32f and 32f directed to the outside in the width direction. 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，除了向上的遊離片33以外，還能夠形成有以與該遊離片33相對的方式向下的遊離片35。The structure shown in Figure 15(a) is formed with an H-shaped cut line 32, that is, formed with a line (horizontal line) 32g in the width direction intersecting the length direction and from both ends of the line 32g. The structure of the cut line 32 formed by the left and right lines (longitudinal lines) 32h and 32h extending in both directions in the longitudinal direction. According to this structure, 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延伸的方向和遊離片35延伸的方向相反的切入線32的結構。The structure shown in FIG. 15(b) is a structure in which a downward cutting line 32 is formed, that is, a cutting line 32 is formed in which the direction in which one end 5a of the strip body 5 for unsealing extends is opposite to the direction in which the free piece 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 in the width direction (horizontal line) intersecting the length 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和遊離片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 a structure for enabling the one end portion 5a of the strip body 5 for opening to move to the opposite side of the second sheet 3, it may not be a combination of the cut line 32 and the free piece 33, as shown in FIG. 15(c) , It can also be the opening 36. Even in the opening 36, the device and method for moving the one end portion 5a of the strip body 5 for opening to the side opposite to the second sheet 3 are basically the same as the above-mentioned device and method.

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 junction part 34 of the 2nd sheet|seat 3 and the strip body 5 for opening may be formed so that the center may be aligned. Moreover, the junction part may be formed in the whole width direction of the strip body 5 for opening. In addition, the junction part may be formed only in the width direction both sides edge part of the strip body 5 for opening. In addition, the junction part does not need to be formed up to the other end of the strip body 5 for opening. In short, it is only necessary that the strip body 5 for opening 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遊離片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 joint is not limited to a structure continuously formed in the longitudinal direction. For example, the junction part may include the part in the free piece 33, and the structure which consists of a point seal implemented at an appropriate part.

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 cut line is not limited to the full cut line. The cutting line only needs to be broken when an external force is applied by the external force applying mechanism. For example, the cut-in line can be a half-cut (half cut) or a punctured 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 for opening is not limited to being constituted by one member. For example, the strip body for opening may be formed by integrally joining the main body part and one end part of a separate body.

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 not be provided in the second sheet 3 but in 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, "trapezoid", "rectangular shape", "rectangular shape", "straight line", "central part", "end part", "side part", "coincidence", "parallel" and other display shapes and positions In the present invention, in addition to the term itself, the term "or state" also includes the concept of "approximately" that 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 food to be packaged is not limited to sandwiches. The food may be in a shape that can be accommodated in the food packaging bag. For example, the food may be processed rice foods such as bread, cakes, and rice balls. 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 the present invention is not limited to the above-mentioned embodiment. The present invention can be modified in various ways 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 being used in a specific packaging method. The packaging sheet can be used in general bags such as the outer sheet, pillow packaging sheet, flat bag, and side fold bag in the food packaging material that is packaged in a state where the rice ball and the seaweed sheet are packaged separately. All items used in various packaging methods, such as used sheets, are used as objects.

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 packaging object is not limited to food. The packaged object may also be a packaged object 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 long 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 of other materials such as paper or paper sheet. In addition, the packaging sheet may be, for example, a sheet made by joining the ends of two sheets to each other to make one sheet, or a sheet made by joining the ends of three sheets in sequence to make one sheet. In the material method, multiple sheets are used to form a sheet of sheet material. In addition, in this case, the material of each sheet may be different. For example, it is possible to use paper or paper sheets instead of plastic sheets for some of the sheets.

1,1A,1B:食品用包裝袋 10:袋主體 11,11A,11B:頂部接合部 12,12A,12B:側部接合部 13:開口部 14,14A:切口部 15:頭部 2:第一片材（表面片材） 2X:第一片材坯料 20:主體部 21:頂端部 22:接合部 3:第二片材（背面片材） 3X:第二片材坯料 30:主體部 31:頂端部 32,32A,32B:切入線 32a:端點 32b~32h:切入線 33,33A,33B:遊離片 33a:一端緣 33b:側緣 34,34A,34B:接合部 34a:一端緣 35:遊離片 36:開口 4:內片材 5,5A,5B:開封用條體 5X:開封用條體的片材坯料 5a:一端部（捏持片） 5b:側緣 50:顯示部 51:顯示部 100:切斷機構 101:搬運/接合機構 102:保持桿 103:接合桿 104:空氣噴嘴（外力施加機構） 105:棒（外力施加機構） L1:開封用條體5和遊離片33的寬度方向的中心線 L2:接合部34的寬度方向的中心線 G1:接合部34的一端緣34a與遊離片33的一端緣33a的間隔（非接合部的寬度） 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） S1:中心線L1和中心線L2的偏移量1, 1A, 1B: Food packaging bags 10: Bag body 11, 11A, 11B: top joint 12, 12A, 12B: side joint 13: Opening 14,14A: Notch 15: head 2: The first sheet (surface sheet) 2X: The first sheet blank 20: Main body 21: Top part 22: Joint 3: The second sheet (back sheet) 3X: The second sheet blank 30: main body 31: Top part 32, 32A, 32B: cut-in line 32a: Endpoint 32b~32h: Cut-in line 33, 33A, 33B: free flakes 33a: one edge 33b: side edge 34, 34A, 34B: Joint 34a: one edge 35: Free piece 36: opening 4: inner sheet 5, 5A, 5B: strips for opening 5X: Strip sheet blank for opening 5a: One end (pinch piece) 5b: side edge 50: Display 51: Display 100: Cut off mechanism 101: handling/joining mechanism 102: keep the rod 103: Joint lever 104: Air nozzle (external force application mechanism) 105: Rod (external force application mechanism) L1: The center line in the width direction of the strip body 5 for opening and the free piece 33 L2: The center line in the width direction of the joint 34 G1: The distance between the one end edge 34a of the joining portion 34 and the one end edge 33a of the free piece 33 (the width of the non-joining portion) G2: Space between the side edge 5b of the strip body 5 for opening and the end point 32a of the cut line 32 (width of the gap) S1: The offset between the center line L1 and the center line 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 food packaging bag according to an embodiment of the present invention. Fig. 2 is a front view of the food packaging bag. Fig. 3 is a rear view of the food packaging bag. Fig. 4 (a) is a front view of the second sheet constituting the food packaging bag. Fig. 4(b) is an enlarged view of the opening starting point of Fig. 4(a). Fig. 5 (a) is a perspective view seen from the back side of the food package packaged in the food packaging bag. Fig. 5(b) is a perspective view when the food package is opened. 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 blank. 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 strip for opening on the second sheet blank. 8(a) and 8(b) are explanatory diagrams of the structure of an apparatus that implements the steps of FIG. 7. 9 is an explanatory view of the manufacturing process of the packaging bag for food, and is an explanatory view of the process of making one end portion of the strip for unsealing protrude from the cutting line to the opposite surface side of the second sheet blank. Fig. 10 is an explanatory diagram viewed from the side opposite to Fig. 9. Figs. 11(a) to (c) are explanatory diagrams of an apparatus configuration for implementing the steps of Fig. 9. Figs. 12(a) to (c) are explanatory diagrams of another device configuration that implements the steps of Fig. 9. Fig. 13 is an explanatory view of the manufacturing process of the food packaging bag, and is an explanatory view of each process from the first and second sheet blanks to the final completion of the food packaging bag. Figs. 14(a) to (d) are respectively enlarged views of main parts of a food packaging bag according to another embodiment. Figs. 15(a) to (d) are respectively enlarged views of main parts of a food packaging bag according to another embodiment. Fig. 16 is a rear view of a conventional food packaging bag. 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 opened.

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 the order of deposit institution, date and number) no Foreign hosting information (please note in the order of hosting country, institution, date and number) no

3:第二片材(背面片材) 3: The second sheet (back sheet)

5:開封用條體 5: Strip for opening

5a:一端部(捏持片) 5a: One end (pinch piece)

31:頂端部 31: Top part

32:切入線 32: Cut-in line

33:遊離片 33: Free piece

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

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遊離片的工序；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遊離片上的方式配置開封用條體，在從遊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；及通過向遊離片施加外力，使開封用條體的一端部經由遊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 for manufacturing a packaging sheet, which has a strip for unsealing extending in a predetermined direction on one side of the sheet, wherein The manufacturing method of the packaging sheet includes: A process of forming a cut line on the sheet, and by forming the cut line, a free sheet that opens when bent to form an opening; On one side of the sheet, the strip for opening is placed on the free sheet so that a part more inside than one end of the strip for opening is placed on the free sheet, within a predetermined range from the free sheet to the other end of the strip for opening , The process of joining the strip for unsealing to one side of the sheet; and By applying external force to the free sheet, one end of the strip for opening is moved to the other side of the sheet through the opening formed by the free sheet, and one end of the strip for opening is protruded from the cut line to the other side of the sheet.的processes.

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遊離片的工序；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遊離片上的方式配置開封用條體，在從遊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遊離片施加外力，使開封用條體的一端部經由遊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 for manufacturing a sheet blank for packaging. While conveying the sheet blank in the longitudinal direction, a strip for opening is pasted at predetermined intervals on one side of the sheet blank, wherein The manufacturing method of the sheet blank for packaging includes: A process of forming a cutting line on the sheet blank by a cutting mechanism, and forming a cutting line to form a free piece that opens when it is bent to form an opening; The conveying/joining mechanism on the downstream side of the conveying direction of the sheet blank than the cutting mechanism is arranged to overlap the free piece on one side of the sheet blank with a part inside than one end of the strip for opening. The strip for opening is a process of joining the strip for opening to one side of the sheet blank within a prescribed range from the free sheet to the other end of the strip for opening; and By using the external force applying mechanism on the downstream side of the conveying direction of the sheet blank than the conveying/joining mechanism to apply an external force to the free sheet, one end of the strip for opening is directed to the other side of the sheet blank through the opening formed by the free sheet The step of moving sideways to make one end of the strip for opening protrude 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遊離片的機構、使棒的頂端與遊離片接觸並將棒壓入的機構、吸附或吸引遊離片的機構中的任一種。Such as the manufacturing method of the sheet blank for packaging of claim 2, wherein The external force application mechanism may be any of a mechanism that blows air from an air nozzle to the free piece, a mechanism that brings the tip of the rod into contact with the free piece and presses the rod in, and a mechanism that sucks or sucks the free piece.

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。Such as the manufacturing method of the sheet blank for packaging of claim 2, wherein The joining step includes a step of joining the strip body for opening and the free sheet so that a non-joining portion having a predetermined width is formed between one end edge of the joining portion and the cut 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 sheet blank for packaging according to any one of claims 2 to 4, wherein The joining step includes a step of joining the portion shifted from the center in the width direction of the strip for opening in the longitudinal direction of the strip for opening.

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遊離片，即，在彎曲時打開而形成開口的遊離片；並且在一方的片材的內表面上從遊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 food packaging bag has a bag body in which a pair of sheets having a shape wider than the other end side is overlapped, and a top joint part on one end side and a side joint part on both side edges are paired. The three sides are sealed, and the other end side becomes an opening; and the head is composed of protruding pieces of each sheet protruding from the top joint, wherein One sheet has a free sheet formed on the head by forming a cut line, that is, a free sheet that opens when bent to form an opening; and on the inner surface of the one sheet, from the free sheet to the other end side of the sheet With strips for opening, One end of the strip for opening protrudes from the cut line to the outer surface side of one sheet to become a pinch piece for opening.

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，遊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。Such as the food packaging bag of claim 6, where The cutting line has a shape where the two ends are close to the top joint, Thus, the free piece has a shape in which the two end points of the cut line are the fixed ends, and the one end side separated from the top joint portion is the free end.

如請求項7之食品用包裝袋，其中開封用條體從遊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。Such as the food packaging bag of claim 7, in which The strip for opening is joined to the inner surface of one of the sheets within a predetermined range from the free sheet to the other end side of the strip for opening, There is a non-joint part with a predetermined width between the one end edge of the joint part and the cut 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。Such as the food packaging bag of claim 7 or 8, where The width of the strip for opening is smaller than the interval between the two ends of the cutting line, As a result, there is a gap of a predetermined width between each side edge of the strip for opening and each end point of the cut 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。Such as the food packaging bag of claim 6, where One end of the strip for opening has a display portion that can be recognized from the 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 for manufacturing a packaging sheet, which has a strip for unsealing extending in a predetermined direction on one side of the sheet, wherein The manufacturing method of the packaging sheet includes: The process of forming a cutting line on the sheet; On one side of the sheet, the strip for opening is placed on the cutting line so that a part more inside than one end of the strip for opening is placed on the cutting line, within a predetermined range from the cutting line to the other end of the strip for opening , The process of joining the strip for unsealing to one side of the sheet; and By applying an external force to the cutting line, one end of the strip for opening is moved to the other side of the sheet through the opening formed by the cutting line, so that one end of the strip for opening protrudes from the cutting line to the other side of the sheet的processes.

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 for manufacturing a packaging sheet, which has a strip for unsealing extending in a predetermined direction on one side of the sheet, wherein The manufacturing method of the packaging sheet includes: The process of forming an opening on the sheet; On one side of the sheet, the strip for opening is arranged so that a part inside the one end of the strip for opening overlaps the opening, and within a predetermined range from the opening to the other end of the strip for opening, The process of joining the strip for opening to one side of the sheet; and The process of moving one end of the strip for opening to the other side of the sheet through the opening by applying an external force to the opening, and protruding 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 food packaging bag has a bag body in which a pair of sheets having a shape wider than the other end side is overlapped, and a top joint part on one end side and a side joint part on both side edges are paired. The three sides are sealed, and the other end side becomes an opening; and the head is composed of protruding pieces of each sheet protruding from the top joint, wherein One of the sheets has an opening in the head, and on the inner surface of one of the sheets, there is a strip for unsealing from the opening to the other end of the sheet, One end of the strip for opening protrudes from the opening to the outer surface side of one sheet to become a pinch piece for opening.