TWI831856B - Method for heating the contents filled in the packaging bag - Google Patents

Method for heating the contents filled in the packaging bag Download PDF

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Publication number
TWI831856B
TWI831856B TW108138822A TW108138822A TWI831856B TW I831856 B TWI831856 B TW I831856B TW 108138822 A TW108138822 A TW 108138822A TW 108138822 A TW108138822 A TW 108138822A TW I831856 B TWI831856 B TW I831856B
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packaging bag
polypropylene
mpa
sealing portion
film
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TW108138822A
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Chinese (zh)
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TW202108462A (en
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山内由夫
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日商京洛股份有限公司
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    • 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
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/26—Articles or materials wholly enclosed in laminated sheets or wrapper blanks
    • 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
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/40—Packages formed by enclosing successive articles, or increments of material, in webs, e.g. folded or tubular webs, or by subdividing tubes filled with liquid, semi-liquid, or plastic materials
    • 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
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/34—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents for packaging foodstuffs or other articles intended to be cooked or heated within the package
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
    • Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Food Science & Technology (AREA)
  • Bag Frames (AREA)
  • Package Specialized In Special Use (AREA)
  • Packages (AREA)

Abstract

提供一種能夠抑制在密封部剝離的包裝袋。 To provide a packaging bag capable of suppressing peeling at a sealing portion.

根據本發明，提供一種包裝袋，其是在密封部熔接膜而構成的包裝袋，所述包裝袋具備隨著內部壓力上升形成蒸汽流路的排蒸汽密封部，所述膜具備聚丙烯層，在所述密封部將所述聚丙烯層彼此熔接。 According to the present invention, there is provided a packaging bag in which a film is welded to a sealing portion, the packaging bag is provided with a steam exhaust sealing portion that forms a steam flow path as the internal pressure rises, and the film is provided with a polypropylene layer, The polypropylene layers are welded to each other at the sealing portion.

Description

被填充於包裝袋的內容物的加熱方法 Method for heating the contents filled in the packaging bag

本發明涉及一種適合在微波爐中加熱內容物的包裝袋。 The present invention relates to a packaging bag suitable for heating the contents in a microwave oven.

專利文件1公開了一種通過在密封部熔接具有可撓性的膜而構成的包裝袋。該包裝袋設置有排蒸汽密封部，該排蒸汽密封部用於釋放用微波爐加熱內容物時產生的蒸汽。 Patent Document 1 discloses a packaging bag formed by welding a flexible film to a sealing portion. The packaging bag is provided with a steam-releasing sealing portion for releasing steam generated when the contents are heated in a microwave oven.

【現有技術文件】 [Existing technical documents]

【專利文件】 【Patent document】

專利文件1：WO2013/100058號 Patent document 1: WO2013/100058

專利文件2：日本專利第4753875號 Patent document 2: Japanese Patent No. 4753875

當使用微波爐加熱填充在專利文件1的包裝袋中的內容物時，根據內容物，會發生在包裝袋的密封部發生剝離的情況。 When the contents filled in the packaging bag of Patent Document 1 are heated using a microwave oven, the sealing portion of the packaging bag may peel depending on the contents.

本發明是鑒於上述情況而完成的，提供一種能夠抑制在密封部處剝離的包裝袋。 The present invention was made in view of the above-mentioned circumstances, and provides a packaging bag capable of suppressing peeling at a sealing portion.

根據本發明提供一種包裝袋，其是膜在密封部熔接而構成的包裝袋。所述包裝袋具備隨內部壓力上升而形成蒸汽流路的排蒸汽密封部，所述膜具備聚丙烯層，在所述密封部處所述聚丙烯層彼此熔接。 According to the present invention, there is provided a packaging bag in which a film is welded at a sealing portion. The packaging bag is provided with a steam exhaust sealing portion that forms a steam flow path as internal pressure rises, the film is provided with a polypropylene layer, and the polypropylene layers are welded to each other at the sealing portion.

本發明人經過深入研究發現通過將膜的聚丙烯層彼此熔接來構成包裝袋能夠抑制在密封部處發生剝離，從而完成了本發明。 The present inventors conducted intensive research and found that peeling off at the sealing portion can be suppressed by welding the polypropylene layers of the film to each other to form a packaging bag, and completed the present invention.

以下，例示本發明的各種實施方式。以下所示實施方式可以互相組合。 Various embodiments of the present invention are illustrated below. The embodiments shown below can be combined with each other.

優選所述包裝袋的所述聚丙烯層由未拉伸聚丙烯膜構成。 Preferably, the polypropylene layer of the packaging bag is composed of unstretched polypropylene film.

優選所述包裝袋具備前表面部，其中，所述前表面部具備前表面下部和前表面上部，所述前表面下部和所述前表面上部在合掌部處連結，所述合掌部以所述前表面下部和所述前表面上部相互折返的狀態重疊而形成，所述排蒸汽密封部設置在所述合掌部。 It is preferable that the packaging bag includes a front surface part, wherein the front surface part includes a front surface lower part and a front surface upper part, and the front surface lower part and the front surface upper part are connected at a palm part, and the palm part is formed by the above-mentioned The lower part of the front surface and the upper part of the front surface are overlapped and formed in a folded state, and the steam exhaust sealing part is provided on the palm part.

優選所述包裝袋在所述包裝袋內填充有內容物，所述內容物包含粒狀體和液體。 Preferably, the packaging bag is filled with contents, and the contents include granules and liquid.

優選所述包裝袋，其中，所述粒狀體由澱粉構成，所述液體是糖漿。 Preferably, in the packaging bag, the granules are made of starch, and the liquid is syrup.

優選所述包裝袋，其中，所述內容物在常溫下的粒狀體的比例為50質量%以上。 Preferably, in the packaging bag, the content has a granular content ratio of 50% by mass or more at room temperature.

優選所述包裝袋，其中，所述內容物被冷凍。 Preferably the packaging bag is wherein the contents are frozen.

1:包裝袋 1: Packing bag

1b:下邊緣 1b: Lower edge

1l:左側邊緣 1l: left edge

1r:右側邊緣 1r: right edge

1t:上邊緣 1t:Top edge

2:前表面部 2: Front surface

2d:前表面下部 2d: lower part of front surface

2u:前表面上部 2u: Upper part of front surface

3:背表面部 3: Back surface

4:密封部 4:Sealing part

4b:底密封部 4b: Bottom seal part

4s:側密封部 4s: Side sealing part

4t:頂密封部 4t:Top sealing part

5:合掌部 5: Gassho Department

6a:側密封部 6a: Side seal part

6b:端密封部 6b: End seal part

6c:排蒸汽密封部 6c: Steam exhaust sealing part

6c1:內側緣 6c1: medial edge

8:排蒸汽密封部 8: Steam exhaust sealing part

9:膜 9: Membrane

9a:基材層 9a: Base material layer

9b:聚丙烯層 9b:Polypropylene layer

11:內容物 11:Contents

11a:粒狀體 11a: granular body

11b:液體 11b: liquid

12:切口 12: Incision

圖1是本發明第1實施方式的包裝袋1的立體圖。 FIG. 1 is a perspective view of the packaging bag 1 according to the first embodiment of the present invention.

圖2是表示通過圖1中的排蒸汽密封部6c和切口12的剖面的剖面圖。 FIG. 2 is a cross-sectional view showing a cross section through the steam exhaust sealing portion 6 c and the cutout 12 in FIG. 1 .

圖3是表示將內容物11收容在包裝袋1之後形成底密封部4b的狀態後的狀態的右視圖。 FIG. 3 is a right side view showing a state in which the bottom seal portion 4 b is formed after the contents 11 are accommodated in the packaging bag 1 .

以下，說明本發明的實施方式。以下所示實施方式中示出的各種技術特徵能夠互相組合。另外，各特徵獨立地使發明成立。 Hereinafter, embodiments of the present invention will be described. Various technical features shown in the embodiments shown below can be combined with each other. In addition, each feature independently enables the invention to be established.

1.第1實施方式 1. First Embodiment

如圖1所示，本發明第1實施方式的包裝袋1是一種將具有可撓性的膜9形成為袋狀而得到的包裝袋。包裝袋1具備前表面部2和背表面部3。前表面部2和背表面部3通過熱密封在密封部4彼此熔接。密封部4具備沿包裝袋1上邊緣1t形成的頂密封部4t和沿右側邊緣1r或左側邊緣1l 形成的側密封部4s。包裝袋1的下邊緣1b在收容內容物前未被熔接，如圖3所示，在將內容物11收容在包裝袋1內後進行熔接以形成底密封部4b。通過該方式，在包裝袋1的四周設置密封部4，使包裝袋1內部密封。 As shown in FIG. 1 , the packaging bag 1 according to the first embodiment of the present invention is a packaging bag obtained by forming a flexible film 9 into a bag shape. The packaging bag 1 includes a front surface part 2 and a back surface part 3 . The front surface part 2 and the back surface part 3 are fused to each other at the sealing part 4 by heat sealing. The sealing part 4 includes a top sealing part 4t formed along the upper edge 1t of the packaging bag 1 and a right edge 1r or left edge 1l. The side seal portion 4s is formed. The lower edge 1 b of the packaging bag 1 is not welded before the contents are contained. As shown in FIG. 3 , the lower edge 1 b is welded after the contents 11 are contained in the packaging bag 1 to form the bottom sealing portion 4 b. In this way, the sealing portion 4 is provided around the packaging bag 1 to seal the inside of the packaging bag 1 .

如圖2所示，膜9優選通過層疊含有基材層9a和聚丙烯層9b的多層來構成，且聚丙烯層9b是最內層。在密封部4，使聚丙烯層9b彼此熔接。 As shown in FIG. 2 , the film 9 is preferably formed by laminating a plurality of layers including a base material layer 9 a and a polypropylene layer 9 b, with the polypropylene layer 9 b being the innermost layer. In the sealing part 4, the polypropylene layers 9b are welded to each other.

優選基材層9a由尼龍、乙烯-α烯烴共聚物、聚丙烯、高密度聚乙烯、或線性低密度聚乙烯等樹脂構成。 The base layer 9a is preferably made of resin such as nylon, ethylene-α olefin copolymer, polypropylene, high-density polyethylene, or linear low-density polyethylene.

優選聚丙烯層9b由未拉伸的聚丙烯膜構成。在這種情況下，特別地抑制在密封部4處發生剝離。構成聚丙烯層9b的聚丙烯優選融點為160℃以上。該融點可以是例如160~180℃，優選是160~170℃。此外，該聚丙烯優選在MD方向上的斷裂強度為45MPa以上，在TD方向上的斷裂強度為30MPa以上，MD方向與TD方向的乘積優選為1350(MPa)2以上。MD方向的斷裂強度例如是45~100MPa，其具體可以列舉如45、50、55、60、65、70、75、80、85、90、95、100MPa，也可以是此處所示任意兩個數值之間的範圍。TD方向的斷裂強度例如是30~100MPa，具體可以列舉如30、35、40、45、50、55、60、65、70、75、80、85、90、95、100MPa，也可以是此處所示任意兩個數值之間的範圍。拉伸彈性模數(tensile modulus of elasticity)優選為在MD方向上為600MPa以上，在TD方向上為500MPa以上，且MD方向與TD方向的乘積為300000(MPa)2以上。MD方向的拉伸彈性模數例如是600~1000MPa，具體可以是例如600、650、700、750、800、850、900、950、1000MPa，也可以是此處所示任意兩個數值之間的範圍。MD方向的拉伸彈性模數例如是500~1000MPa，具體可以是例如500、550、600、650、700、750、800、850、900、950、1000MPa，也可以是此處所示任意兩個數值之間的範圍。斷裂強度和拉伸彈性模數可以根據JIS K 7127測定。 The polypropylene layer 9b is preferably composed of an unstretched polypropylene film. In this case, the occurrence of peeling at the sealing portion 4 is particularly suppressed. The polypropylene constituting the polypropylene layer 9b preferably has a melting point of 160° C. or higher. The melting point may be, for example, 160 to 180°C, preferably 160 to 170°C. In addition, the polypropylene preferably has a breaking strength in the MD direction of 45 MPa or more, a breaking strength in the TD direction of 30 MPa or more, and the product of the MD direction and the TD direction is preferably 1350 (MPa) 2 or more. The breaking strength in the MD direction is, for example, 45 to 100MPa. Specific examples include 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, and 100MPa, or any two of the values shown here. The range between values. The breaking strength in the TD direction is, for example, 30 to 100MPa. Specific examples include 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, and 100MPa. It can also be here The range between any two numerical values shown. The tensile modulus of elasticity is preferably 600 MPa or more in the MD direction, 500 MPa or more in the TD direction, and the product of the MD direction and the TD direction is preferably 300000 (MPa) 2 or more. The tensile elastic modulus in the MD direction is, for example, 600~1000MPa. Specifically, it can be, for example, 600, 650, 700, 750, 800, 850, 900, 950, 1000MPa, or it can be between any two values shown here. Scope. The tensile elastic modulus in the MD direction is, for example, 500~1000MPa. Specifically, it can be, for example, 500, 550, 600, 650, 700, 750, 800, 850, 900, 950, 1000MPa, or any two shown here. The range between values. Breaking strength and tensile elastic modulus can be measured in accordance with JIS K 7127.

應予說明，膜9的構成不限於圖2所示的構成，也可以是僅由聚丙烯層9b構成的，且還可以具備基材層9a和聚丙烯層9b以外的層。例如，可以在基材層9a與聚丙烯層9b之間設置黏結層。 In addition, the structure of the film 9 is not limited to the structure shown in FIG. 2, It may consist only of the polypropylene layer 9b, and may also be provided with the layer other than the base material layer 9a and the polypropylene layer 9b. For example, an adhesive layer may be provided between the base material layer 9a and the polypropylene layer 9b.

如圖1所示，前表面部2具備前表面下部2d和前表面上部2u。前表面下部2d和前表面上部2u分別熔接到背表面部3。如圖2所示，前表面下部2d和前表面上部2u是在以互相折返的狀態重疊而形成的合掌部5處相連接。如圖1所示，在合掌部5、一對側密封部6a、一對端密封部6b、以及排蒸汽密封部6c處，前表面下部2d與前表面上部2u熔接。側密封部6a在合掌部5處設置在沿右側邊緣1r和左側邊緣1l的位置。端密封部6b設置成連接側密封部6a和排蒸汽密封部6c。端密封部6b的寬度從側密封部6a朝向排蒸汽密封部6c逐漸變窄。排蒸汽密封部6c的內側緣6c1構成 朝向包裝袋1內側彎曲的大致V字形狀。在包裝袋1上比內側緣6c1靠近外側且鄰接於內側緣6c1的位置設置切口12。 As shown in FIG. 1 , the front surface part 2 includes a front surface lower part 2d and a front surface upper part 2u. The front lower part 2d and the front upper part 2u are respectively welded to the back surface part 3. As shown in FIG. 2 , the front lower portion 2 d and the front upper portion 2 u are connected at the palm portion 5 formed by overlapping each other and being folded back. As shown in FIG. 1 , at the palm portion 5 , the pair of side seals 6 a , the pair of end seals 6 b , and the steam exhaust seal 6 c , the front lower portion 2 d and the front upper portion 2 u are welded. The side seal portion 6a is provided at the palm portion 5 at a position along the right edge 1r and the left edge 1l. The end seal 6b is provided to connect the side seal 6a and the steam exhaust seal 6c. The width of the end seal portion 6b gradually becomes narrower from the side seal portion 6a toward the steam exhaust seal portion 6c. The inner edge 6c1 of the steam exhaust sealing portion 6c is composed of A substantially V-shaped shape that is curved toward the inside of the packaging bag 1 . The notch 12 is provided in the packaging bag 1 at a position closer to the outside than the inner edge 6c1 and adjacent to the inner edge 6c1.

如圖3所示，在將內容物11填充到包裝袋1內後，在包裝袋1的下邊緣1b形成底密封部4b。通過該方式，密封包裝袋1內部。 As shown in FIG. 3 , after the contents 11 are filled into the packaging bag 1 , a bottom sealing portion 4 b is formed on the lower edge 1 b of the packaging bag 1 . In this way, the inside of the packaging bag 1 is sealed.

內容物11包含粒狀體11a和液體11b。粒狀體11a在室溫下是固體物質，例如是由珍珠果(木薯澱粉，tapioca)等澱粉構成。液體11b是可以賦予粒狀體11a以流動性的液體，例如是含有糖分的糖漿。粒狀體11a的直徑(同體積球體的相當直徑)例如是0.5~1.5cm。內容物11中的粒狀體11a的比例優選為50質量%，更優選為65質量%以上，例如是50~90質量%，具體可以是例如50、55、60、65、70、75、80、85、90質量%，也可以是此處所示任意兩個數值之間的範圍。內容物11優選為被冷凍的。 Content 11 contains granular bodies 11a and liquid 11b. The granular body 11a is a solid substance at room temperature, and is made of starch such as tapioca, for example. The liquid 11b is a liquid that can impart fluidity to the granular body 11a, and is, for example, a syrup containing sugar. The diameter of the granular body 11a (the equivalent diameter of a sphere of the same volume) is, for example, 0.5 to 1.5 cm. The proportion of granular bodies 11a in the content 11 is preferably 50 mass%, more preferably 65 mass% or more, for example, 50 to 90 mass%, specifically, for example, 50, 55, 60, 65, 70, 75, 80 , 85, 90% by mass, or a range between any two values shown here. Content 11 is preferably frozen.

內容物11相對於包裝袋1的最大內部容量的填充率例如為25~60%，優選為30~50%，具體可以是例如25、30、35、40、45、50、55、60%，也可以是此處所示任意兩個數值之間的範圍。包裝袋1的最大內部容量是包裝袋1完全填滿內容物時的容量，例如當是專利文件2所示的三側密封袋的情況時，可基於公式(1)計算得到。 The filling rate of the content 11 relative to the maximum internal capacity of the packaging bag 1 is, for example, 25 to 60%, preferably 30 to 50%, specifically, it may be, for example, 25, 30, 35, 40, 45, 50, 55, 60%, It can also be a range between any two values shown here. The maximum internal capacity of the packaging bag 1 is the capacity when the packaging bag 1 is completely filled with the contents. For example, in the case of a three-side sealed bag shown in Patent Document 2, it can be calculated based on formula (1).

(最大內部容量)=(0.33×S×m)-(0.11×m3) (1) (Maximum internal capacity)=(0.33×S×m)-(0.11×m 3 ) (1)

在公式(1)中，S為填充有內容物的部分的投影面積，m是填充有內容物的部分的短邊的邊長。 In formula (1), S is the projected area of the portion filled with contents, and m is the length of the short side of the portion filled with contents.

當用微波爐加熱填充有內容物11的包裝袋1時，因內容物11中包含的水分所產生的蒸汽，包裝袋1的內部壓力升高，從而在排蒸汽密封部6c的大致V字形狀的前端附近處密封剝離，形成蒸汽流路，通過蒸汽流路將蒸汽排放到外部。蒸汽分別從合掌部5的端部和切口12排放到外部。 When the packaging bag 1 filled with the contents 11 is heated in a microwave oven, the internal pressure of the packaging bag 1 increases due to the steam generated by the moisture contained in the contents 11, so that the substantially V-shaped portion of the steam exhaust sealing portion 6c The seal is peeled off near the front end to form a steam flow path through which steam is discharged to the outside. The steam is discharged to the outside from the end of the gassho portion 5 and the cutout 12 respectively.

當內容物11是由大量的粒狀體11a和少量的液體11b構成時，內容物11的流動性低，內容物11的溫度局部地變高，從而造成在側密封部4s等密封部4處發生意外剝離的問題。該問題在內容物11的填充率高、冷凍內容物11、以及液體11b是像糖漿一樣黏度高的液體(20MPa．S以上)、或是含有糖度或油成分的沸點高的液體時特別顯著。此外，當使用如商用微波爐一樣的高輸出功率(1200W以上)進行快速加熱時也很顯著。在本實施方式中，為了解決該問題，通過將聚丙烯層9b彼此熔接來提高密封部4處的熔接強度，能夠抑制密封部4的意外剝離。 When the content 11 is composed of a large amount of granular bodies 11a and a small amount of liquid 11b, the fluidity of the content 11 is low and the temperature of the content 11 becomes locally high, resulting in sealing parts 4 such as the side sealing part 4s. Problems with accidental peeling. This problem is particularly noticeable when the filling rate of the content 11 is high, the frozen content 11, and the liquid 11b are a liquid with a high viscosity (20 MPa.S or more) like syrup, or a liquid with a high boiling point containing sugar content or oil components. In addition, it is also significant when using high output power (above 1200W) like a commercial microwave oven for rapid heating. In this embodiment, in order to solve this problem, the polypropylene layers 9b are welded to each other to increase the welding strength at the sealing portion 4, thereby suppressing accidental peeling of the sealing portion 4.

2.其他實施方式 2. Other implementations

．包裝袋1可以具有可獨立站立的形狀。 ． The packaging bag 1 may have a shape that can stand independently.

．排蒸汽密封部6c不限定於大致V字形狀，也可以是U字形狀。 ． The steam exhaust sealing part 6c is not limited to a substantially V-shape, and may be a U-shape.

．在上述實施方式中，排蒸汽密封部6c的外側緣雖然可以形成與內側緣6c1相似的形狀(即，大致V字形狀)，但也可以是形成與外側緣不同的 形狀。例如，外側緣可以是直線形狀。此外，在上述實施方式中，切口12雖然沒有設置在未密封的部分，但切口12也可以設置在密封部。 ． In the above-described embodiment, the outer edge of the steam exhaust sealing portion 6c may be formed in a shape similar to the inner edge 6c1 (that is, substantially V-shaped). However, it may be formed in a shape different from the outer edge. shape. For example, the outer edge may be linear in shape. Furthermore, in the above embodiment, the cutout 12 is not provided in the unsealed portion, but the cutout 12 may be provided in the sealed portion.

【實施例】 [Example]

1.包裝袋1的製作 1. Production of packaging bag 1

<實施例1> <Example 1>

通過在密封部4處熔接膜9來製造具有如圖1所示形狀的包裝袋1。作為膜9，使用基材層9a和聚丙烯層9b的積層膜。基材層9a由尼龍構成。聚丙烯層9b由未拉伸聚丙烯膜(Toray膜加工株式會社製造，型號：Treffan NO ZK207)構成。在密封部4處，將相對置的聚丙烯層9b彼此熔接在一起。 The packaging bag 1 having the shape shown in FIG. 1 is manufactured by welding the film 9 at the sealing portion 4 . As the film 9, a laminated film of the base material layer 9a and the polypropylene layer 9b is used. The base material layer 9a is made of nylon. The polypropylene layer 9b is composed of an unstretched polypropylene film (manufactured by Toray Film Processing Co., Ltd., model number: Treffan NO ZK207). At the sealing portion 4, the opposite polypropylene layers 9b are welded to each other.

<比較例1> <Comparative example 1>

除了用LLDPE(出光Unitech Co.Ltd製造，型號：Unilux LS-700C)構成聚丙烯層9b以外，用與實施例1相同的其他條件製造包裝袋1。 The packaging bag 1 was manufactured under the same conditions as in Example 1 except that the polypropylene layer 9b was made of LLDPE (manufactured by Idemitsu Unitech Co. Ltd., model number: Unilux LS-700C).

2.內容物的填充 2. Filling of contents

在實施例．比較例的包裝袋1內填充內容物11後形成底密封部4b。內容物11是由直徑1cm的珍珠果(tapioca)(粒狀體11a)和糖漿(液體11b)構成的。在內容物11中，珍珠果的比例為77質量%。填充率為46.7%。在將內容物11填充到包裝袋1內後，冷凍內容物11。 In the embodiment. In the packaging bag 1 of the comparative example, the bottom sealing portion 4b is formed after filling the content 11 inside. Content 11 is composed of tapioca (granular body 11a) with a diameter of 1 cm and syrup (liquid 11b). In Content 11, the proportion of pearl fruit is 77% by mass. The fill rate is 46.7%. After the contents 11 are filled into the packaging bag 1, the contents 11 are frozen.

3.加熱試驗 3. Heating test

將含有冷凍後內容物11的包裝袋1用1900W的微波爐加熱60秒後，目視觀察其狀態。 The packaging bag 1 containing the frozen content 11 was heated in a 1900W microwave oven for 60 seconds, and then the state was visually observed.

在比較例1的包裝袋1中，在側密封部4s上確認到發生意外剝離。另一方面，在實施例1的包裝袋1中，於排蒸汽密封部6c以外的部位沒有確認到密封部4發生意外剝離。 In the packaging bag 1 of Comparative Example 1, it was confirmed that unexpected peeling occurred in the side seal portion 4s. On the other hand, in the packaging bag 1 of Example 1, no accidental peeling of the sealing portion 4 was observed at locations other than the steam release sealing portion 6c.

4:密封部 4:Sealing part

5:合掌部 5: Gassho Department

6c:排蒸汽密封部 6c: Steam exhaust sealing part

9:膜 9: Membrane

9a:基材層 9a: Base material layer

9b:聚丙烯層 9b:Polypropylene layer

12:切口 12: Incision

Claims (6)

一種被填充於包裝袋的內容物的加熱方法，包含：用微波爐，以1200W以上的輸出功率，加熱被填充於所述包裝袋的所述內容物的步驟，其中，所述包裝袋是在密封部熔接膜而構成，而且具備隨著內部壓力上升形成蒸汽流路的排蒸汽密封部，所述膜具備聚丙烯層，在所述密封部，所述聚丙烯層彼此熔接，所述內容物混合有由澱粉構成的粒狀體及糖漿且被冷凍，而且所述內容物在常溫下的粒狀體的比例為50質量%以上。 A method of heating the contents filled in the packaging bag, including the step of heating the contents filled in the packaging bag with a microwave oven at an output power of more than 1200W, wherein the packaging bag is sealed The film is composed of a welded film and is provided with a steam exhaust sealing portion that forms a steam flow path as the internal pressure rises. The film is provided with a polypropylene layer. In the sealing portion, the polypropylene layers are welded to each other and the contents are mixed. There are granules and syrup composed of starch and are frozen, and the proportion of granules in the content at normal temperature is 50 mass % or more. 根據請求項1所述的加熱方法，其中，所述聚丙烯層由未拉伸聚丙烯膜構成。 The heating method according to claim 1, wherein the polypropylene layer is composed of unstretched polypropylene film. 根據請求項1所述的加熱方法，其中，所述包裝袋具備前表面部和背表面部，所述前表面部和所述背表面部，在所述密封部彼此熔接，所述前表面部具備前表面下部和前表面上部，所述前表面下部和所述前表面上部在合掌部處連結，所述合掌部以所述前表面下部和所述前表面上部相互折返的狀態重疊而形成，而且所述排蒸汽密封部設置在所述合掌部。 The heating method according to claim 1, wherein the packaging bag includes a front surface part and a back surface part, and the front surface part and the back surface part are welded to each other at the sealing part, and the front surface part It is provided with a front lower part and a front upper part, and the front lower part and the front upper part are connected at a palm part, and the palm part is formed by overlapping the front lower part and the front upper part in a folded state, Moreover, the steam exhaust sealing portion is provided on the palm-joined portion. 根據請求項3所述的加熱方法，其中，構成為通過所述蒸汽流路的蒸汽，能夠從所述合掌部的端部排放到外部。 The heating method according to claim 3, wherein the steam passing through the steam flow path is configured to be discharged to the outside from an end of the palm-joined portion. 根據請求項1至4任一項所述的加熱方法，其中， 構成所述聚丙烯層的聚丙烯，在MD方向上的斷裂強度為45MPa以上，在TD方向上的斷裂強度為30MPa以上，所述MD方向上的斷裂強度與所述TD方向上的斷裂強度的乘積為1350(MPa)2以上。 The heating method according to any one of claims 1 to 4, wherein the polypropylene constituting the polypropylene layer has a breaking strength in the MD direction of 45 MPa or more and a breaking strength in the TD direction of 30 MPa or more, so The product of the breaking strength in the MD direction and the breaking strength in the TD direction is 1350 (MPa) 2 or more. 根據請求項1至4任一項所述的加熱方法，其中，構成所述聚丙烯層的聚丙烯，在MD方向上的拉伸彈性模數為600MPa以上，在TD方向上的拉伸彈性模數上為500MPa以上，且所述MD方向上的拉伸彈性模數與所述TD方向上的拉伸彈性模數的乘積為300000(MPa)2以上。 The heating method according to any one of claims 1 to 4, wherein the polypropylene constituting the polypropylene layer has a tensile elastic modulus in the MD direction of 600 MPa or more, and a tensile elastic modulus in the TD direction. The number is 500 MPa or more, and the product of the tensile elastic modulus in the MD direction and the tensile elastic modulus in the TD direction is 300000 (MPa) 2 or more.
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