JP2006248577A

JP2006248577A - Merchandise packaging structure

Info

Publication number: JP2006248577A
Application number: JP2005068494A
Authority: JP
Inventors: Kunio Yamauchi; 邦夫山内; Teppei Ito; 鉄平伊藤
Original assignee: Nissin Food Products Co Ltd
Current assignee: Nissin Food Products Co Ltd
Priority date: 2005-03-11
Filing date: 2005-03-11
Publication date: 2006-09-21
Anticipated expiration: 2025-03-11
Also published as: JP4522893B2

Abstract

<P>PROBLEM TO BE SOLVED: To provide a merchandise packaging structure which easily and adequately seals merchandise to be packaged with a packaging film, and facilitates opening of sealing. <P>SOLUTION: The merchandise packaging structure is set up by superposing and sealing both right and left sides of the packaging film having heat-shrinkable properties on each other to form a cylindrical package having a rear laminate portion 3, by inserting the merchandise 1 to be packaged into the cylindrical package, by fusion-cutting and sealing front and rear ends of the package to form a package 2 with fusion-cut sealing portions 4, and by subjecting the package 2 to heat shrinkage to bring it into intimate contact with the merchandise 1 to be packaged. Herein the packaging film forming the rear laminate portion 3 has a first side portion 5 with a large width on its left side and a second side portion 6 with a small width on its right side, and a free end of the first side portion 5 is folded back toward a proximal end as a folded portion, whereby the folded portion and the second side portion 6 cooperatively form a three-layered superposed portion. Thus the rear laminate portion 3 is formed by sealing the superposed portion in one body. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、熱収縮性を有する包装用フィルムにより被包装物をシュリンク包装する商品の包装構造に関するものである。 The present invention relates to a packaging structure for products in which an article to be packaged is shrink-wrapped by a packaging film having heat shrinkability.

従来、例えば下記特許文献１に示されるように、インスタント食品が収容された容器等からなる被包装物を、熱収縮性を有する包装フィルムにより被覆したシュリンク包装体において、上記包装フィルムの両側辺部を互いに重合してヒートシールすることにより上記被包装物の縦方向に沿った背貼り部（合掌貼り部）を形成するとともに、被包装物の上面および底面に位置する包装用フィルムの両端部を被包装物の径方向に溶断シールした後、加熱装置の熱風で熱収縮性の包装フィルムを加熱して収縮させることにより、包装フィルムを被包装物に密着させることが行われている。 2. Description of the Related Art Conventionally, as shown in, for example, Patent Document 1 below, in a shrink wrapping body in which an object to be packaged including an instant food container or the like is covered with a heat-shrinkable packaging film, both side portions of the packaging film Are formed on each other by heat-sealing and forming a back-pasted portion (gap-pasted portion) along the longitudinal direction of the packaging object, and both ends of the packaging film positioned on the top and bottom surfaces of the packaging object After fusing and sealing in the radial direction of the article to be packaged, the packaging film is brought into close contact with the article to be packaged by heating and shrinking the heat-shrinkable packaging film with hot air from a heating device.

また、例えば下記特許文献２に示されるように、包装フィルムを緊張させ、この包装フィルムに対して被包装物を突き上げて表面を被覆するとともに、上記包装フィルムの前後および左右の端部を、左右折込板および前後折込板により被包装物の底面中央へ向けて折り込み、ヒートシール等の手段で固着するストレッチ包装方法において、上記左右もしくは前後の何れかの折込板により折り込まれる包装フィルムの折込端部を、上記折込板の作動とともに圧搾空気の吹き付けにより被包装物の底面中央に押し込み、被包装物の底面部において包装用フィルムの折込端部を重ねた状態で互いに接着する等により被包装物をストレッチ包装することが行われている。
特開平０９−２５５０２９号公報特開平０７−２３７６１５号公報 Further, for example, as shown in Patent Document 2 below, the packaging film is tensioned, the packaged object is pushed up against the packaging film to cover the surface, and the front and rear and left and right ends of the packaging film are left and right. In the stretch wrapping method, which is folded by the folding plate and the front and rear folding plates toward the center of the bottom surface of the package and fixed by means such as heat sealing, the folding edge of the packaging film folded by either the right or left folding plate Is pushed into the center of the bottom of the package by blowing compressed air together with the operation of the folding plate, and the package is bonded to each other with the folded ends of the packaging film stacked on the bottom of the package. Stretch wrapping is done.
Japanese Patent Laid-Open No. 09-255029 Japanese Patent Application Laid-Open No. 07-237615

上記特許文献１に示されるように、熱収縮性を有する包装フィルムの両側辺部を互いに重合してヒートシールすることによって上記被包装物の縦方向に沿った背貼り部を形成するとともに、被包装物の上面および底面に位置する包装用フィルムの両端部を被包装物の径方向に溶断シールすることにより、被包装物を被覆する包装体を形成した後、この包装体を熱収縮させて被包装物に密着させた包装構造では、上記包装用フィルムからなる包装体を開封する作業が困難であるという問題がある。 As shown in the above-mentioned patent document 1, both sides of the packaging film having heat shrinkability are superposed and heat-sealed to form a back-pasted portion along the longitudinal direction of the package, and After fusing and sealing both ends of the packaging film located on the top and bottom surfaces of the package in the radial direction of the package, a package covering the package is formed, and then the package is thermally contracted. The packaging structure in close contact with the packaged item has a problem that it is difficult to open the package made of the packaging film.

すなわち、図１９に示すように、カップ状の容器１Ｂからなる被包装物の縦方向に沿って形成された背貼り部３Ｂを摘んだ状態で、容器１Ｂの側面等に沿って水平に形成された溶断シール部４Ｂに沿った方向に引っ張るようにすれば、この溶断シール部４Ｂを破断するとともに、上記背貼り部３Ｂの基端部に沿って包装体２Ｂを破断することにより、この包装体２Ｂを開封して容器１Ｂを取り出すことが可能である。しかし、図２０に示すように、包装用フィルムの側辺部を重合した状態でヒートシールすることにより形成された上記背貼り部３Ｂは、その長手方向の両端部を包装体２Ｂとともに溶断シールする際に、この包装体２Ｂにぴったりと密着した状態となり易い。このため、上記背貼り部３Ｂと包装体２Ｂとの間に指の爪を差し入れて背貼り部３Ｂを摘むことが困難であり、包装体２Ｂの開封作業を容易に行うことができないという問題があった。 That is, as shown in FIG. 19, it is formed horizontally along the side surface of the container 1B and the like in a state where the back pasting portion 3B formed along the longitudinal direction of the packaged object made up of the cup-shaped container 1B is picked. If the fusing seal part 4B is pulled in the direction along the fusing seal part 4B, the fusing seal part 4B is broken and the packaging body 2B is broken along the base end part of the back pasting part 3B. The container 1B can be taken out by opening 2B. However, as shown in FIG. 20, the back-pasted portion 3B formed by heat-sealing in a state where the side portions of the packaging film are polymerized is fused and sealed with the packaging body 2B at both ends in the longitudinal direction. At this time, it tends to be in a state of being closely adhered to the package 2B. For this reason, it is difficult to insert a fingernail between the back pasting portion 3B and the packaging body 2B to grip the back pasting portion 3B, and the packaging body 2B cannot be easily opened. there were.

一方、上記特許文献２に示されるように、被包装物の底面中央に向けて折り込まれた包装用フィルムの折込端部を互いに重ねた状態で接着する等により、被包装物をストレッチ包装するように構成した場合には、被包装物を適正に密封することが困難であり、上記折込端部の接着面積および接着強度を大きくすると、開封が困難となってその作業時に被包装物が傷付けられ易いという問題がある。これに対して開封を容易にするために、上記折込端部の接着面積および接着強度を小さくすると、包装体の密封性を充分に確保することが困難である等の問題がある。 On the other hand, as shown in the above-mentioned Patent Document 2, the packaging object is stretch-wrapped by bonding the folded end portions of the packaging film folded toward the center of the bottom surface of the packaging object in a state where they are overlapped with each other. If it is configured, it is difficult to properly seal the package, and if the adhesive area and the adhesive strength of the folding end are increased, opening is difficult and the package is damaged during the operation. There is a problem that it is easy. On the other hand, if the adhesive area and the adhesive strength of the folding end are reduced in order to facilitate opening, there is a problem that it is difficult to ensure sufficient sealing performance of the package.

特に、円盤状の被包装物等をストレッチ包装する場合には、包装用フィルムからなる包装体によって被包装物を茶巾絞り状に被覆する必要があるため、包装用フィルムの折込端部が複雑に絡まり合った状態となって外観が悪化するとともに、開封部が分かり難くなるという問題があった。 In particular, when stretch-wrapping a disk-shaped package, etc., it is necessary to cover the package in a tea-drawn shape with a package made of a packaging film, so the folding end of the packaging film is complicated. There was a problem that the appearance deteriorates in an entangled state and the unsealed portion is difficult to understand.

本発明は、上記の点に鑑みてなされたものであり、包装用フィルムにより被包装物を容易かつ適正に密封することができるとともに、この密封状態を容易に開封することができる商品の包装構造を提供するものである。 The present invention has been made in view of the above points, and a packaging structure for a product that can easily and properly seal an article to be packaged with a packaging film and can easily open the sealed state. Is to provide.

請求項１に係る発明は、熱収縮性を有する包装用フィルムの左右両側辺部を互いに重ね合わせてシールすることにより背貼り部を有する筒状包装体を形成するとともに、この筒状包装体内に被包装物を挿入した状態でその前後において筒状包装体を溶断シールすることにより溶断シール部を有する包装体を形成し、この包装体を熱収縮させて被包装物に密着させた商品の包装構造であって、上記背貼り部を構成する包装用フィルムの左右両側辺部に幅寸法の大きい第１側辺部と幅寸法の小さい第２側辺部とを設け、第１側辺部の遊端部を基端部側に折り返すとともに、この折返し部と第２側辺部とによって三層構造の重合部を形成し、この重合部を一体にシールすることにより上記背貼り部を構成したものである。 The invention according to claim 1 forms a cylindrical package body having a back pasting portion by overlapping the left and right side portions of the packaging film having heat shrinkability and sealing each other, and in the cylindrical package body. Packaging of a product in which a package body having a fusing seal portion is formed by fusing and sealing the cylindrical package body before and after the article to be packaged is inserted, and the package body is thermally contracted to adhere to the article to be packaged The structure is provided with a first side part having a large width dimension and a second side part having a small width dimension on the left and right side parts of the packaging film constituting the back pasting part, The free end portion is folded back to the base end portion side, and a three-layered overlap portion is formed by the turn-back portion and the second side portion, and the back pasting portion is configured by sealing the overlap portion together. Is.

請求項２に係る発明は、上記請求項１に記載の商品の包装構造において、第１側辺部の遊端部を基端部側に折り返すことにより形成された折返し部の外側面に第２側辺部を重ね合わせて三層構造の重合部を形成したものである。 According to a second aspect of the present invention, in the product packaging structure according to the first aspect, the second side surface is formed on the outer side surface of the folded portion formed by folding the free end portion of the first side portion toward the proximal end portion. A superposed part having a three-layer structure is formed by overlapping the side parts.

請求項３に係る発明は、上記請求項２に記載の商品の包装構造において、第２側辺部を包装体の本体部に当接させる方向に背貼り部を折曲げた状態で包装体の本体部と一体に溶断シールしたものである。 The invention according to claim 3 is the product packaging structure according to claim 2, wherein the back side is bent in a direction in which the second side portion is brought into contact with the main body of the package. It is fused and sealed integrally with the main body.

上記請求項１に係る発明によれば、包装用フィルムの一側辺部に設けられた幅寸法の大きい第１側辺部の遊端部が基端部側に折り返されてなる二層構造の折返し部と、包装用フィルムの他側辺部に設けられた第２側辺部とが重ね合わされた状態でシールされることにより三層構造の重合部からなる背貼り部が形成されるため、この背貼り部とともに筒状包装体を溶断シールした場合においても、上記背貼り部と包装体の本体部との間に所定の隙間を形成することができる。したがって、上記背貼り部と包装体の本体部との間に爪を挿入して背貼り部を溶断シール部に沿った方向に引っ張ることにより、この溶断シール部を破断するとともに、上記背貼り部の基端部に沿って第１側辺部と第２側辺部とのシール部を破断することにより、包装体を容易に開封できるという利点がある。 According to the first aspect of the present invention, the two-layer structure in which the free end portion of the first side portion having a large width provided on one side portion of the packaging film is folded back to the base end portion side. Because the back-pasted part consisting of the superposed part of the three-layer structure is formed by sealing the folded part and the second side part provided on the other side part of the packaging film, Even when the tubular packaging body is fused and sealed together with the back pasting portion, a predetermined gap can be formed between the back pasting portion and the main body portion of the packaging body. Therefore, by inserting a nail between the back pasting part and the main body part of the package and pulling the back pasting part in a direction along the fusing seal part, the fusing seal part is broken and the back pasting part There is an advantage that the package can be easily opened by breaking the seal portion between the first side portion and the second side portion along the base end portion.

請求項２に係る発明によれば、上記第１側辺部の遊端部と基端部とからなる折返し部の外側面に第２側辺部がシールされることにより上記背貼り部が形成されるため、この背貼り部と包装体の本体部との間に爪を挿入して背貼り部を溶断シール部に沿った方向に引っ張ることにより、上記背貼り部の基端部に沿って第１側辺部の遊端部と第２側辺部とのシール部を容易に破断できるという利点がある。 According to the invention of claim 2, the back pasting portion is formed by sealing the second side portion on the outer surface of the folded portion composed of the free end portion and the base end portion of the first side portion. Therefore, by inserting a nail between the back pasting part and the main body part of the package and pulling the back pasting part in a direction along the fusing seal part, along the base end part of the back pasting part There is an advantage that the seal portion between the free end portion of the first side portion and the second side portion can be easily broken.

請求項３に係る発明では、上記第１側辺部の遊端部と基端部側とからなる折返し部の外側面にシールされた第２側辺部が包装体の本体部に当接するように折曲げられた状態で、上記背貼り部が包装体の本体部とともに溶断シールされることにより、上記折返し部と第２側辺部とのシール部が折返し部により覆われて保護されるため、上記シール部が不測に剥離してシール性が損なわれるという事態の発生を効果的に防止することができる。そして上記背貼り部と包装体の本体部との間に爪を挿入して背貼り部を溶断シール部に沿った方向に引っ張ることにより、この溶断シール部を破断するとともに、上記背貼り部の基端部に沿って第１側辺部と第２側辺部とのシール部を破断することにより、包装体を容易に開封できるという利点がある。 In the invention which concerns on Claim 3, the 2nd side part sealed by the outer surface of the folding | turning part which consists of the free end part and base end part side of the said 1st side part is contact | abutted to the main-body part of a package. Since the back-pasted part is melted and sealed together with the main body part of the package in a state where it is folded, the seal part between the folded part and the second side part is covered and protected by the folded part. It is possible to effectively prevent the occurrence of a situation in which the seal part is unexpectedly peeled off and the sealing performance is impaired. And by inserting a nail between the back pasting part and the main body part of the package and pulling the back pasting part in a direction along the fusing seal part, the fusing seal part is broken and the back pasting part There is an advantage that the package can be easily opened by breaking the seal portion between the first side portion and the second side portion along the base end portion.

以下、本発明の実施形態を図面に基づいて説明する。図１は、約９０ｍｍの直径を有するとともに、約１０ｍｍの厚みを有する円盤状に形成された被包装物１を、包装体２によりシュリンク包装してなる商品の包装構造を示している。具体的には、即席麺等とともにカップ状の容器内に収容される天ぷら等からなる上記被包装物１を、ポリプロピレン、ポリエチレン、ポリスチレン、ポリ塩化ビニル、ポリエチレンテレフタレート、ポリブチレンテレフタレートもしくはポリアミド等の熱収縮性を有する包装用フィルム（上記の樹脂材料等からなる複数枚のフィルム材をラミネートしたものを含む）により構成された包装体２によりシュリンク包装した例を示している。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a packaging structure of a product formed by shrink-wrapping a package 1 having a diameter of about 90 mm and a disk shape having a thickness of about 10 mm. Specifically, the packaged object 1 made of tempura or the like housed in a cup-shaped container together with instant noodles is heated with heat such as polypropylene, polyethylene, polystyrene, polyvinyl chloride, polyethylene terephthalate, polybutylene terephthalate, or polyamide. An example is shown in which shrink wrapping is performed using a package 2 made of a shrinkable packaging film (including a laminate of a plurality of film materials made of the above resin material or the like).

上記包装体２には、後述するように包装用フィルムの左右両側辺部を互いに重合してヒートシールすることにより形成された背貼り部３と、包装用フィルムからなる筒状包装体を溶断シールすることにより形成された溶断シール部４とが設けられている。上記包装体２の背貼り部３は、図２に示すように、上記包装用フィルムの一側辺部に設けられた４０ｍｍ程度の幅寸法を有する第１側辺部５と、包装用フィルムの他側辺部に設けられた７ｍｍ程度の幅寸法を有する第２側辺部６とにより構成されている。すなわち、幅寸法の大きい上記第１側辺部５の遊端部５ａが、幅２０ｍｍ程度に亘って第２側辺部６の設置部側に折り返されるとともに、この折り返された上記遊端部５ａの外面側に上記第２側辺部６が重ね合わされて三層構造の重合部が形成され、この重合部が一体にヒートシールされたヒートシール部７が設けられることにより、上記背貼り部３が形成されている。 As described later, the packaging body 2 has a back-pasted portion 3 formed by polymerizing and heat-sealing the left and right sides of the packaging film, and a tubular packaging body made of the packaging film. The fusing seal part 4 formed by doing is provided. As shown in FIG. 2, the back pasting portion 3 of the packaging body 2 includes a first side portion 5 having a width dimension of about 40 mm provided on one side portion of the packaging film, and a packaging film. It is comprised by the 2nd side part 6 which has the width dimension of about 7 mm provided in the other side part. That is, the free end portion 5a of the first side portion 5 having a large width is folded back to the installation portion side of the second side portion 6 over a width of about 20 mm, and the folded free end portion 5a is folded back. The second side portion 6 is overlapped on the outer surface side to form a three-layer overlapping portion, and a heat seal portion 7 in which the overlapping portion is integrally heat-sealed is provided, whereby the back pasting portion 3 is provided. Is formed.

そして、図３に示すように、上記第２側辺部６の設置部側に折れ返された第１側辺部５の遊端部５ａと、第２側辺部６とを包装体２の本体部（背貼り部３以外の部分）に当接させる方向に上記背貼り部３を折曲げた状態で、図１に示すように、背貼り部３の長手方向の両端部を包装体２の本体部とともに溶断シールすることにより、上記溶断シール部４が構成されている。また、上記包装体２を熱収縮させて円盤状の被包装物１に密着させることにより、被包装物１の表裏両面にそれぞれ円形の包装面が形成され、この円形の包装面の中心点Ｏからやや偏心した位置、つまり図４に示すように円形の包装面の中心点Ｏを通る中心線ａから１０ｍｍ程度の距離Ｌだけ、第２側辺部６側にオフセットしたラインｂに沿って上記背貼り部３の基端部が配設されるようになっている。 And as shown in FIG. 3, the free end part 5a of the 1st side part 5 turned back to the installation part side of the said 2nd side part 6 and the 2nd side part 6 are made into the packaging body 2. As shown in FIG. In the state where the back pasting portion 3 is folded in a direction to be brought into contact with the main body (portion other than the back pasting portion 3), as shown in FIG. The fusing seal portion 4 is configured by fusing and sealing together with the main body portion. Further, by circularly shrinking the packaging body 2 and bringing it into close contact with the disk-shaped article 1, a circular packaging surface is formed on each of the front and back surfaces of the article 1, and a center point O of the circular packaging surface is obtained. The position is slightly deviated from the center, that is, along the line b offset to the second side portion 6 side by a distance L of about 10 mm from the center line a passing through the center point O of the circular packaging surface as shown in FIG. A base end portion of the back pasting portion 3 is arranged.

図５は、上記被包装物１をシュリンク包装するための包装装置を示している。この包装装置は、繰出ロール８から繰り出された包装用フィルム９の一側辺部を所定範囲に亘って下方に折り返す第１ガイド部１０と、上記包装用フィルム９の左右両側辺部（第１，第２両側辺部５，６）を下方にガイドして包装用フィルム９を筒状に湾曲させるフォーマー１１と、包装用フィルム９の左右両側辺部を重合してヒートシールすることにより上記背貼り部３を有する筒状包装体２ａを形成するヒートシーラー１２と、上記第２側辺部６を筒状包装体２ａの本体部側に当接させる方向に上記背貼り部３を折曲げる第２ガイド部１３と、上記筒状本体２ａ内に被包装物１を挿入した状態で、被包装物１の前後において筒状包装体２ａの両端部を溶断シールするシールカッター１４と、被包装物１が封入された包装体２を加熱して熱収縮させる加熱装置１８とを有している。上記繰出ロール８に巻き付けられた包装用フィルム９は、その幅寸法が約２６０ｍｍに設定されるとともに、１５μｍ〜３０μｍ程度の厚みを有している。 FIG. 5 shows a packaging device for shrink wrapping the article 1 to be packaged. The packaging device includes a first guide portion 10 that folds one side portion of the packaging film 9 fed out from the feeding roll 8 downward over a predetermined range, and left and right side portions (first portion) of the packaging film 9. , Second side portions 5, 6) are guided downward to form a cylinder 11 for curving the packaging film 9, and the right and left sides of the packaging film 9 are polymerized and heat-sealed to form the back. The heat sealer 12 that forms the cylindrical package 2a having the pasting portion 3 and the back pasting portion 3 that is bent in the direction in which the second side portion 6 is brought into contact with the main body side of the cylindrical packaging body 2a. 2 guide part 13, seal cutter 14 for fusing and sealing both ends of the tubular package 2 a before and after the package 1 with the package 1 inserted into the tubular body 2 a, and the package Heat the package 2 encapsulating 1 with heat And a heating device 18 for condensation. The packaging film 9 wound around the feeding roll 8 has a width of about 260 mm and a thickness of about 15 μm to 30 μm.

上記第１ガイド部１０は、図６および図７に示すように、断面コ字状のガイド部材１５と、このガイド部材１５の上端部に設けられた水平板１５ａの下面に沿って延びる断面逆Ｌ状のガイド部材１６と、このガイド部材１６の上端部に設けられた水平板１６ａの下方に配設された下方ガイド部材１７とを有し、この下方ガイド部材１７の先端部（フィルム搬送方向αの上流側部）には、後上がりの案内面、つまりフィルム搬送方向αの下流側部が上方に位置するように傾斜した案内面１７ａが設けられている。そして、上記包装用フィルム９の第１側辺部５を上記ガイド部材１５とガイド部材１６との間に導入し、上記第１側辺部５の遊端部５ａを上記下方ガイド部材１７の案内面１７ａに沿って下方に案内することにより、第１側辺部５の基端部５ｂの下方側に上記遊端部５ａを折り返した後、この遊端部５ａおよび基端部５ｂを図外の圧接ローラまた圧接ガイドにより上下から圧接して折り癖を付けるようになっている。 As shown in FIGS. 6 and 7, the first guide portion 10 has a U-shaped guide member 15 and an inverted cross-section extending along the lower surface of the horizontal plate 15 a provided at the upper end portion of the guide member 15. An L-shaped guide member 16 and a lower guide member 17 disposed below a horizontal plate 16a provided at the upper end portion of the guide member 16 are provided. On the upstream side of α, there is provided a guide surface 17a that is inclined so that the rearwardly rising guide surface, that is, the downstream side in the film transport direction α is positioned upward. The first side portion 5 of the packaging film 9 is introduced between the guide member 15 and the guide member 16, and the free end portion 5 a of the first side portion 5 is guided by the lower guide member 17. By guiding downward along the surface 17a, the free end portion 5a is folded back to the lower side of the base end portion 5b of the first side portion 5, and then the free end portion 5a and the base end portion 5b are not shown. The pressure contact roller or pressure guide guides the crease by pressing from above and below.

上記包装装置を使用して被包装物１をシュリンク包装する商品の包装方法を以下に説明する。上記繰出ロール８から繰り出された包装用フィルム９を第１ガイド部１０に供給して上記第１側辺部５の遊端部５ａを基端部５ｂ側に折り返すとともに、この包装用フィルム９をフォーマー１１の設置部に供給して筒状に湾曲させた後、この包装用フィルム９をヒートシーラー１２に供給し、図２に示すように、包装用フィルム９の第１側辺部５を第２側辺部６から所定長さ（例えば１３ｍｍ程度）だけはみ出させた状態で、上記第１側辺部５の遊端部５ａと第２側辺部６とを重合して連続的にヒートシールを施すことにより、上記背貼り部３を有する筒状包装体２ａを形成する。 A method for packaging a product for shrink-wrapping the article to be packaged 1 using the packaging apparatus will be described below. The packaging film 9 fed from the feeding roll 8 is supplied to the first guide portion 10 and the free end portion 5a of the first side portion 5 is folded back to the base end portion 5b side. After supplying to the installation part of the former 11 and making it curve into a cylinder shape, this packaging film 9 is supplied to the heat sealer 12, and as shown in FIG. In a state where it protrudes from the two side portions 6 by a predetermined length (for example, about 13 mm), the free end portion 5a of the first side portion 5 and the second side portion 6 are superposed to continuously heat seal. To form a cylindrical package 2a having the back pasting portion 3.

次いで、上記第２ガイド部１３により、図３に示すように、第２側辺部６を筒状包装体２ａの本体部に当接させる方向に背貼り部３を折曲げた後、上記シールカッター１４の設置部において、上記被包装物１が挿入された筒状包装体２ａの両端部と上記背貼り部３の長手方向両端部とを一体に溶断シールすることにより、図８に示すように、被包装物１が封入された包装体２を形成する。その後、上記包装体２を加熱装置１８内に供給して包装体２に熱風を吹き付ける等により、図１に示すように、包装体２を熱収縮させて被包装物１に密着させた状態で包装する。 Next, as shown in FIG. 3, the back guide portion 3 is bent by the second guide portion 13 in a direction in which the second side portion 6 is brought into contact with the main body portion of the cylindrical package 2a, and then the seal is sealed. As shown in FIG. 8, in the installation part of the cutter 14, the both ends of the cylindrical package 2 a into which the article 1 is inserted and the both ends in the longitudinal direction of the back pasting part 3 are fused and sealed together. Then, a package 2 in which the article to be packaged 1 is enclosed is formed. Then, in the state which supplied the said package 2 in the heating apparatus 18, and sprayed hot air on the package 2, etc., the package 2 was heat-shrinked, and was closely_contact | adhered to the package 1 as shown in FIG. Packaging.

上記のように熱収縮性を有する包装用フィルム９の左右両側辺部を互いに重ね合わせてヒートシールすることにより背貼り部３を有する筒状包装体２ａを形成するとともに、この筒状包装体２ａ内に被包装物１を挿入した状態でその前後において筒状包装体２ａを溶断シールすることにより溶断シール部４を有する包装体２を形成し、この包装体２を熱収縮させて被包装物１に密着させた商品の包装構造において、上記背貼り部３を構成する包装用フィルム９の左右両側辺部に幅寸法の大きい第１側辺部５と幅寸法の小さい第２側辺部６とを設け、第１側辺部５の遊端部５ａを基端部５ｂ側に折り返すとともに、この折返し部に第２側辺部６を重ね合わせて三層構造の重合部を形成し、この重合部７を一体にヒートシールすることにより上記背貼り部３を構成したため、この背貼り部３を摘んで包装体２を開封する作業を容易に行うことができるという利点がある。 As described above, the left and right sides of the packaging film 9 having heat shrinkability are overlapped with each other and heat-sealed to form the cylindrical package 2a having the back pasting portion 3, and this cylindrical package 2a. The package body 2 having the fusing seal portion 4 is formed by fusing and sealing the cylindrical package body 2a before and after the package object 1 is inserted therein, and the package body 2 is thermally shrunk to form the package object. In the packaging structure of the product closely attached to 1, the first side part 5 having a large width dimension and the second side part 6 having a small width dimension are formed on the left and right side parts of the packaging film 9 constituting the back pasting part 3. And the free end portion 5a of the first side portion 5 is folded back to the base end portion 5b side, and the second side portion 6 is overlapped with the folded portion to form a three-layer superposed portion, By integrally heat-sealing the overlapping portion 7, the above For configuring the bonding portion 3, there is an advantage that it is possible to perform the work of opening the package 2 by holding the back lined portion 3 easily.

すなわち、上記背貼り部３は、第１側辺部５の遊端部５ａと基端部５ｂとからなる二層構造の折返し部に上記第２側辺部６を重ね合わせてヒートシールすることにより構成された三層構造の重合部が設けられているため、この重合部内に空気が封入される等により、図２０に示す従来例に比べて背貼り部の厚みが大きくなるとともに、一層のフィルム材からなる包装体２の本体部との熱収縮状態が異なること等に起因して上記背貼り部３と包装体２との間に隙間が形成され易くなるため、この背貼り部３と包装体２の本体部との間に爪を容易に挿入することができる。 That is, the back pasting portion 3 is heat-sealed by overlapping the second side portion 6 on a folded portion having a two-layer structure composed of the free end portion 5a and the base end portion 5b of the first side portion 5. Since the three-layered superposition part constituted by is provided, the thickness of the back sticking part becomes larger than that of the conventional example shown in FIG. A gap is easily formed between the back pasting portion 3 and the packaging body 2 due to a difference in heat shrinkage between the main body portion of the packaging body 2 made of a film material and the like. A nail | claw can be easily inserted between the main-body parts of the package 2.

したがって、上記背貼り部３の先端部を摘んで、図９に示すように、溶断シール部４に沿った方向に引っ張ることにより、この溶断シール部４を破断するとともに、上記背貼り部３の基端部を支点にして第１側辺部５の遊端部５ａと第２側辺部６とのヒートシール部７を破断することにより、包装体２を容易に開封できるという利点がある。また、上記第１側辺部５の遊端部５ａと基端部５ｂとからなる二層構造の折返し部に上記第２側辺部６を重ね合わせることにより形成した三層構造の重合部をヒートシールして一体化させた状態で、その長手方向両端部を上記筒状包装体２ａの本体部とともに溶断シールするように構成したため、この溶断シールを行う際に上記第１側辺部５の遊端部５ａが剥離するという事態の発生を確実に防止して、優れた外観およびシール性を有する溶断シール部４を形成することができる。 Therefore, by picking the tip of the back pasting portion 3 and pulling in the direction along the fusing seal portion 4 as shown in FIG. 9, the fusing seal portion 4 is broken and the back pasting portion 3 By breaking the heat seal portion 7 between the free end portion 5a of the first side portion 5 and the second side portion 6 with the base end portion as a fulcrum, there is an advantage that the package 2 can be easily opened. Further, a three-layer structure overlapping portion formed by superimposing the second side portion 6 on a folded portion having a two-layer structure composed of the free end portion 5a and the base end portion 5b of the first side portion 5 is provided. Since both ends in the longitudinal direction are fused and sealed together with the main body portion of the cylindrical package 2a in a state where heat sealing is performed and integrated, when performing the fusing and sealing, the first side portion 5 The occurrence of a situation where the free end portion 5a is peeled off can be reliably prevented, and the fusing seal portion 4 having an excellent appearance and sealability can be formed.

また、上記実施形態では、図２および図３に示すように、第１側辺部５の遊端部５ａを第２側辺部６の設置部側に折り返すことにより折返し部を形成し、その外側面、つまり第１側辺部５の遊端部５ａに第２側辺部６を重ね合わせた状態でヒートシールすることにより背貼り部３を形成するとともに、上記第２側辺部６を包装体２の本体部に当接させる方向に背貼り部３を折曲げて包装体２の本体部とともに溶断シールするように構成したため、上記第１側辺部５と第２側辺部６とのヒートシール部７を第１側辺部５の基端部５ｂで覆うことにより、優れた外観を呈することができるとともに、上記ヒートシール部７を保護することができるという利点がある。 Moreover, in the said embodiment, as shown in FIG.2 and FIG.3, the folding | returning part is formed by folding the free end part 5a of the 1st side part 5 to the installation part side of the 2nd side part 6, The back side 3 is formed by heat-sealing in a state where the second side 6 is overlapped with the free end 5a of the first side 5 and the second side 6 is Since the back pasting portion 3 is bent in the direction to be brought into contact with the main body portion of the packaging body 2 so as to be fused and sealed together with the main body portion of the packaging body 2, the first side portion 5 and the second side portion 6 By covering the heat seal portion 7 with the base end portion 5b of the first side portion 5, there is an advantage that an excellent appearance can be exhibited and the heat seal portion 7 can be protected.

すなわち、上記第１側辺部５の遊端部５ａおよび基端部５ｂの折返し部分を、図３に示す状態と反対方向（基端部５ｂを包装体２の本体部に当接させる方向）に折曲げてもよいが、この場合には、上記第１側辺部５の遊端部５ａと第２側辺部６とのヒートシール部７が包装体２の外方側に露出するために、外観が悪化するとともに、上記ヒートシール部７に外力が作用することによって第２側辺部６が剥離し易い傾向がある。これに対して上記実施形態に示すように、上記第２側辺部６を包装体２の本体部に当接させる方向に背貼り部３を折曲げて包装体２の本体部とともに溶断シールした場合には、上記第１側辺部５の遊端部５ａと第２側辺部６とのヒートシール部７が外部に露出するのを防止して、外観を向上させることができるとともに、包装体２により包装された天ぷら等の被包装物１を即席麺とともにカップ状の容器等に収容した状態で搬送する際等に、上記包装体２のヒートシール部７に即席麺が当接する等により第２側辺部６が剥離するという事態の発生を防止して、そのシール性を効果的に維持することができる。 That is, the folded portion of the free end portion 5a and the base end portion 5b of the first side portion 5 is opposite to the state shown in FIG. 3 (the direction in which the base end portion 5b is brought into contact with the main body portion of the package 2). In this case, the heat seal portion 7 between the free end portion 5a of the first side portion 5 and the second side portion 6 is exposed to the outer side of the package 2. In addition, the external appearance deteriorates and the second side portion 6 tends to peel off due to the external force acting on the heat seal portion 7. On the other hand, as shown in the above-described embodiment, the back-pasted portion 3 is bent in the direction in which the second side portion 6 is brought into contact with the main body portion of the packaging body 2 and fusion-sealed together with the main body portion of the packaging body 2. In this case, the heat seal part 7 between the free end part 5a of the first side part 5 and the second side part 6 can be prevented from being exposed to the outside, and the appearance can be improved. When the packaged object 1 such as tempura wrapped by the body 2 is transported together with the instant noodles in a cup-shaped container or the like, the instant noodles come into contact with the heat seal portion 7 of the package 2 or the like. Generation | occurrence | production of the situation that the 2nd side part 6 peels can be prevented, and the sealing performance can be maintained effectively.

しかも、図３に示すように、第１側辺部５の遊端部５ａと基端部５ｂとからなる二層構造の折返し部に上記第２側辺部６を重ね合わせてヒートシールすることにより構成された三層構造の重合部内に空気が封入される等により背貼り部３の厚みが大きくなるとともに、上記背貼り部３の先端部分、つまり第１側辺部５の遊端部５ａおよび基端部５ｂの折返し部分と、包装体２の本端部との間には、上記第２側辺部６の厚みに相当する隙間が形成されるため、上記包装体２の開封時に、上記背貼り部３と包装体２の本体部との間に爪を挿入して背貼り部３の先端部分を摘む作業を、より容易に行うことができる。 Moreover, as shown in FIG. 3, the second side portion 6 is overlapped and heat-sealed on a folded portion having a two-layer structure composed of a free end portion 5a and a base end portion 5b of the first side portion 5. The thickness of the back pasting portion 3 is increased by, for example, air being enclosed in the three-layered superposed portion constituted by the above, and the tip end portion of the back pasting portion 3, that is, the free end portion 5a of the first side portion 5 is provided. Since a gap corresponding to the thickness of the second side portion 6 is formed between the folded portion of the base end portion 5b and the main end portion of the packaging body 2, when opening the packaging body 2, The operation | work which inserts a nail | claw between the said back pasting part 3 and the main-body part of the package 2, and picks the front-end | tip part of the back pasting part 3 can be performed more easily.

なお、上記のように第１側辺部５の遊端部５ａを第２側辺部６の設置部側に折り返し、この第１側辺部５の遊端部５ａに第２側辺部６を重ね合わせた状態でヒートシールすることにより背貼り部３を形成する場合において、上記遊端部５ａの折返し長さが基端部５ｂの全長よりも大きいと、図１０に示すように、上記遊端部５ａの先端が基端部５ｂの設置範囲を超えて包装体２の本体部内に侵入した状態となり、上記遊端部５ａに印刷用のインクが塗布されている場合には、このインクが被包装物１に付着する可能性がある。したがって、上記のように第１側辺部５の遊端部５ａを第２側辺部６の設置部側に折り返し、この第１側辺部５の遊端部５ａに第２側辺部６を重ね合わせた状態でヒートシールすることにより背貼り部３を形成する場合には、上記遊端部５ａの折返し長さを基端部５ｂの全長と等しい値に設定するか、あるいは基端部５ｂの全長よりもやや短い値に設定することが望ましい。 As described above, the free end portion 5a of the first side portion 5 is folded back to the installation portion side of the second side portion 6, and the second side portion 6 is connected to the free end portion 5a of the first side portion 5. In the case where the back pasting portion 3 is formed by heat sealing in a state where the two are overlapped, if the turn-back length of the free end portion 5a is larger than the total length of the base end portion 5b, as shown in FIG. When the leading end of the free end portion 5a exceeds the installation range of the base end portion 5b and enters the main body portion of the package 2, the ink for printing is applied to the free end portion 5a. May adhere to the package 1. Therefore, as described above, the free end portion 5a of the first side portion 5 is folded back to the installation portion side of the second side portion 6, and the second side portion 6 is connected to the free end portion 5a of the first side portion 5. When the back pasting portion 3 is formed by heat-sealing in a state of overlapping, the folding length of the free end portion 5a is set equal to the total length of the base end portion 5b, or the base end portion It is desirable to set a value slightly shorter than the total length of 5b.

また、図１１に示すように、第１側辺部５の遊端部５ａを第２側辺部６の設置部と反対側に折り返すことにより折返し部を形成し、その外側面、つまり上記第１側辺部５の基端部５ｂに第２側辺部６を重ね合わせた状態でヒートシールすることにより背貼り部３を形成するとともに、図１２に示すように上記第２側辺部６を包装体２の本体部に当接させる方向に背貼り部３を折曲げ、あるいはこれと逆方向に背貼り部３を折曲げて包装体２の本体部とともに溶断シールするように構成してもよい。この場合においても、図１２に示すように、上記第２側辺部６を包装体２の本体部に当接させる方向に背貼り部３を折曲げることにより、上記第１側辺部５の基端部５ｂと第２側辺部６とのヒートシール部７を第１側辺部５で覆うように構成すれば、このヒートシール部７を保護することができるとともに、厚みの大きい第１側辺部５の遊端部５ａと基端部５ｂとの折返し部および上記背貼り部３と包装体２の本体部との間に形成された隙間を利用して包装体２の開封作業を容易化し、かつ上記溶断シール時に第２側辺部６が剥離するという事態の発生を確実に防止して優れた外観およびシール性を有する上記溶断シール部４を形成することができるという利点がある。 Further, as shown in FIG. 11, a folded portion is formed by folding the free end portion 5a of the first side portion 5 to the side opposite to the installation portion of the second side portion 6, and the outer side surface thereof, that is, the first side The back pasting portion 3 is formed by heat sealing in a state where the second side portion 6 is overlapped with the base end portion 5b of the first side portion 5, and the second side portion 6 is formed as shown in FIG. The back pasting portion 3 is folded in a direction to contact the main body portion of the packaging body 2, or the back pasting portion 3 is folded in the opposite direction to be fused and sealed together with the main body portion of the packaging body 2. Also good. Also in this case, as shown in FIG. 12, by bending the back pasting portion 3 in a direction in which the second side portion 6 is brought into contact with the main body portion of the packaging body 2, If it comprises so that the heat seal part 7 of the base end part 5b and the 2nd side edge part 6 may be covered with the 1st side edge part 5, while being able to protect this heat seal part 7, it is 1st with large thickness. The opening operation of the packaging body 2 is performed using the folded portion between the free end portion 5a and the base end portion 5b of the side portion 5 and the gap formed between the back pasting portion 3 and the main body portion of the packaging body 2. There is an advantage that the fusing seal part 4 having an excellent appearance and sealing property can be formed by facilitating and reliably preventing the occurrence of the situation that the second side part 6 is peeled off at the fusing seal. .

図３または図１２に示すように、第２側辺部６を包装体２の本体部に当接させる方向に背貼り部３を折曲げて包装体２の本体部とともに溶断シールするように構成した場合において、上記第２側辺部６の幅寸法Ｗ１と、第１側辺部５の折返し部の幅寸法Ｗ２との差が小さいと、上記包装体２の開封時に背貼り部３の先端部分（第１側辺部５の遊端部５ａおよび基端部５ｂの折返し部分）を摘む際に上記第２側辺部６が一緒に摘まれるという事態を生じ易く、上記背貼り部３の基端部を支点にして第１側辺部５の遊端部５ａと第２側辺部６とのシール部を破断することが困難となる場合がある。したがって、上記第２側辺部６の幅寸法Ｗ１と、第１側辺部５の折返し部の幅寸法Ｗ２との差を１０ｍｍ以上に設定することが好ましく、１５ｍｍ以上に設定することがより好ましい。 As shown in FIG. 3 or FIG. 12, the back-pasted portion 3 is bent in the direction in which the second side portion 6 is brought into contact with the main body portion of the packaging body 2 and is fused and sealed together with the main body portion of the packaging body 2. In this case, if the difference between the width dimension W1 of the second side portion 6 and the width dimension W2 of the folded portion of the first side portion 5 is small, the tip of the back pasting portion 3 is opened when the packaging body 2 is opened. When the portion (the free end portion 5a and the folded end portion of the base end portion 5b of the first side portion 5) is picked, the second side portion 6 is likely to be picked together. It may be difficult to break the seal portion between the free end portion 5a of the first side portion 5 and the second side portion 6 with the base end portion as a fulcrum. Therefore, the difference between the width dimension W1 of the second side part 6 and the width dimension W2 of the folded part of the first side part 5 is preferably set to 10 mm or more, and more preferably set to 15 mm or more. .

また、図１３に示すように、第１側辺部５の遊端部５ａを第２側辺部６の設置部側に折り返すとともに、この第１側辺部５の遊端部５ａと基端部５ｂとの間に第２側辺部６を挿入することにより、この第２側辺部６を上記第１側辺部５の遊端部５ａと基端部５ｂとからなる折返し部の内面側に配設した状態でヒートシールを施すことによりヒートシール部７を有する背貼り部３を形成することも考えられるが、この場合には、上記第２側辺部６が第１側辺部５の遊端部５ａと基端部５ｂとの間に挟持された状態で、これらが一体的にヒートシールされるため、このヒートシール部７を容易に破断することが困難となる傾向がある。したがって、図３または図１２に示すように、第２側辺部６を包装体２の本体部に当接させる方向に背貼り部３を折曲げて包装体２の本体部とともに溶断シールするようにした構成を採用することが望ましい。 Further, as shown in FIG. 13, the free end portion 5 a of the first side portion 5 is folded back to the installation portion side of the second side portion 6, and the free end portion 5 a and the proximal end of the first side portion 5 are folded. By inserting the second side part 6 between the part 5b, the second side part 6 is connected to the inner surface of the folded part made up of the free end part 5a and the base end part 5b of the first side part 5. It is also conceivable to form the back pasting part 3 having the heat seal part 7 by applying heat seal in a state of being disposed on the side, in which case the second side part 6 is the first side part. Since these are integrally heat-sealed while being sandwiched between the free end portion 5a and the base end portion 5b, the heat-sealed portion 7 tends to be difficult to break easily. . Therefore, as shown in FIG. 3 or FIG. 12, the back-pasted portion 3 is bent in a direction in which the second side portion 6 is brought into contact with the main body portion of the packaging body 2 so as to be fused and sealed together with the main body portion of the packaging body 2. It is desirable to adopt the configuration as described above.

上記実施形態では、図４に示すように、円形の平面形状を有する被包装物１に対応して円形に形成された包装面の中心Ｏから第２側辺部６側に所定距離Ｌだけ偏心した位置に背貼り部３を配設したため、この背貼り部３を包装面の中心Ｏを通る中心線ａ上に配設した場合に比べ、上記溶断シール部４を破断するとともに、上記背貼り部３の基端部に沿って包装体２を破断することにより形成される包装体２の開口面積を大きくすることができる（図９参照）。このため、上記包装体２に形成された開口部から被包装物１を取り出す作業を容易に行うことができるという利点がある。 In the above embodiment, as shown in FIG. 4, the center is eccentric by a predetermined distance L from the center O of the packaging surface formed in a circle corresponding to the packaged object 1 having a circular planar shape to the second side portion 6 side. Since the back pasting portion 3 is disposed at the position, the fusing seal portion 4 is broken and the back pasting is performed as compared with the case where the back pasting portion 3 is disposed on the center line a passing through the center O of the packaging surface. The opening area of the package 2 formed by breaking the package 2 along the base end portion of the portion 3 can be increased (see FIG. 9). For this reason, there exists an advantage that the operation | work which takes out the to-be-packaged object 1 from the opening part formed in the said package 2 can be performed easily.

なお、図１４に示すように、円形に形成された包装面の中心Ｏから大きく偏心した位置に背貼り部３を配設した場合には、包装体２を熱収縮させて被包装物１に密着させる際に、上記背貼り部３が大きく収縮するとともに、これに対応して上記溶断シール部４の破断強度が過度に増大することにより、包装体２の開封作業が困難になる傾向がある。このため、円形に形成された包装面の中心Ｏから図の左側にやや偏心した位置、例えば５ｍｍ〜１０ｍｍ程度だけ偏心した位置に上記背貼り部３を配設することにより、包装体２の開封性を損なうことなく、上記開口面積を充分に確保できるように構成することが好ましい。 In addition, as shown in FIG. 14, when the back sticking part 3 is arrange | positioned in the position largely deviated from the center O of the packaging surface formed circularly, the package body 2 is heat-shrinked and the packaged object 1 is obtained. When making it adhere | attach, while the said back pasting part 3 shrink | contracts greatly, there exists a tendency for the opening operation | work of the package 2 to become difficult because the fracture | rupture strength of the said fusing seal part 4 increases correspondingly to this. . For this reason, the package 2 is opened by disposing the back pasting portion 3 at a position slightly deviated from the center O of the packaging surface formed in a circle to the left side of the figure, for example, a position deviated by about 5 mm to 10 mm. It is preferable that the opening area be sufficiently ensured without impairing the properties.

上記実施形態では、即席麺等とともにカップ状の容器内に収容される天ぷら等からなる被包装物１をシュリンク包装する商品の包装構造について説明したが、上記天ぷら等に限られず、紙箱またはカップ等に収容された商品の包装構造についても本発明を適用可能である。例えば、図１５に示すように、即席麺等が収容されたカップ状の容器からなる被包装物１ａの包装構造にいても本発明を適用可能である。 In the said embodiment, although the packaging structure of the goods which shrink-wrap the to-be-packaged object 1 which consists of tempura etc. accommodated in a cup-shaped container with instant noodles etc. was demonstrated, it is not restricted to the said tempura etc., A paper box or a cup etc. The present invention can also be applied to the packaging structure of commodities accommodated in the container. For example, as shown in FIG. 15, the present invention can be applied even to a packaging structure of a packaged object 1 a composed of a cup-shaped container in which instant noodles and the like are accommodated.

すなわち、上記被包装物１ａの側面および底面に沿って配設された包装体２の背貼り部３に、幅寸法の大きい第１側辺部５と幅寸法の小さい第２側辺部６とを設け、図１６に示すように、第１側辺部５の遊端部５ａを第２側辺部６の設置部側に折返し、この第１側辺部５の遊端部５ａに第２側辺部６を重ね合わせた状態でヒートシールすることにより背貼り部３を形成するとともに、上記第２側辺部６を包装体２の本体部に当接させる方向に折曲げて包装体２の本体部と一体に溶断シールし、あるいは図１７に示すように、第１側辺部５の遊端部５ａを第２側辺部６の設置部と反対側に折返し、上記第１側辺部５の基端部５ｂに第２側辺部６を重ね合わせた状態でヒートシールすることにより背貼り部３を形成するとともに、上記第２側辺部６を包装体２の本体部に当接させる方向に折曲げて包装体２の本体部と一体に溶断シールすることにより、溶断シール部４を形成した後、上記包装体２を熱収縮させることにより上記被包装物１ａに密着させるようにしてもよい。 That is, on the back pasting portion 3 of the package 2 disposed along the side surface and the bottom surface of the article to be packaged 1a, the first side portion 5 having a large width dimension and the second side portion 6 having a small width dimension, 16, the free end portion 5a of the first side portion 5 is folded back to the installation portion side of the second side portion 6, and the second free end portion 5a of the first side portion 5 is secondly connected. The back pasting portion 3 is formed by heat sealing in a state in which the side side portions 6 are overlapped, and the packaging body 2 is bent in the direction in which the second side side portion 6 is brought into contact with the main body portion of the packaging body 2. The fusing end 5a of the first side part 5 is folded back to the opposite side of the installation part of the second side part 6 as shown in FIG. The back pasting portion 3 is formed by heat-sealing in a state where the second side portion 6 is superimposed on the base end portion 5b of the portion 5, and the second side portion Is formed in such a manner that the sealing body 4 is formed by fusing and sealing with the main body portion of the packaging body 2, and then the packaging body 2 is thermally contracted. You may make it closely_contact | adhere to the said to-be-packaged object 1a.

上記のように構成した場合には、上記背貼り部３と包装体２との間に爪を容易に挿入して背貼り部３を摘んで、上記被包装物１ａの側面に沿って水平に延びる溶断シール部４に沿った方向に上記背貼り部３を引っ張ることにより、図１８に示すように、上記溶断シール部４を破断するとともに、上記背貼り部３の基端部に沿って包装体２を破断することにより、包装体２を容易に開封することができ、かつ上記溶断シール時に第２側辺部６が剥離するという事態の発生を確実に防止して、優れた外観およびシール性を有する上記溶断シール部４を形成できるという利点がある。 When comprised as mentioned above, a nail | claw is easily inserted between the said back pasting part 3 and the package 2, and the back pasting part 3 is picked, and it is horizontal along the side surface of the said to-be packaged object 1a. By pulling the back pasting portion 3 in a direction along the extending fusing seal portion 4, the fusing seal portion 4 is broken and packaged along the proximal end portion of the back pasting portion 3 as shown in FIG. By breaking the body 2, the packaging body 2 can be easily opened, and the occurrence of a situation in which the second side portion 6 is peeled off at the time of fusing and sealing is reliably prevented, and an excellent appearance and seal There is an advantage that the fusing seal part 4 having the property can be formed.

なお、第１側辺部５の遊端部５ａを基端部５ｂ側に折り返し、この折返し部と第２側辺部６とで構成された三層構造の重合部を一体にヒートシールすることにより上記背貼り部３を形成するように構成された上記実施形態に代え、上記三層構造の重合部を静電シールすることにより上記背貼り部３を形成するように構成してもよい。 Note that the free end portion 5a of the first side portion 5 is folded back to the base end portion 5b side, and the three-layer structure overlapping portion composed of the folded portion and the second side portion 6 is heat-sealed integrally. Instead of the above-described embodiment configured to form the back pasting portion 3, the back pasting portion 3 may be formed by electrostatically sealing the superposed portion having the three-layer structure.

本発明に係る商品の包装構造の実施形態を示す斜視図である。It is a perspective view which shows embodiment of the packaging structure of the goods which concern on this invention. 被包装物の包装過程を示す断面図である。It is sectional drawing which shows the packaging process of a to-be-packaged object. 被包装物の包装状態を示す断面図である。It is sectional drawing which shows the packaging state of a to-be-packaged object. 背貼り部の配設位置を示す底面図である。It is a bottom view which shows the arrangement | positioning position of a back sticking part. 商品の包装に使用される包装装置の具体的構成を示す説明図である。It is explanatory drawing which shows the specific structure of the packaging apparatus used for packaging of goods. ガイド部の具体的構成を示す正面断面図である。It is front sectional drawing which shows the specific structure of a guide part. ガイド部の具体的構成を示す側面断面図である。It is side surface sectional drawing which shows the specific structure of a guide part. 包装体を熱収縮させる前の状態を示す斜視図である。It is a perspective view which shows the state before carrying out the heat shrink of the package body. 包装体の開封過程を示す説明図である。It is explanatory drawing which shows the opening process of a package. 本発明に係る商品の包装構造の変形例を示す断面図である。It is sectional drawing which shows the modification of the packaging structure of the goods which concern on this invention. 本発明に係る商品の包装構造の別の実施形態を示す図２相当図である。It is FIG. 2 equivalent view which shows another embodiment of the packaging structure of the goods which concern on this invention. 本発明に係る商品の包装構造の別の実施形態を示す図３相当図である。FIG. 4 is a view corresponding to FIG. 3 showing another embodiment of the product packaging structure according to the present invention. 本発明に係る商品の包装構造のさらに別の実施形態を示す図２相当図である。It is FIG. 2 equivalent view which shows another embodiment of the packaging structure of the goods which concern on this invention. 背貼り部の配設位置の変形例を示す底面図である。It is a bottom view which shows the modification of the arrangement | positioning position of a back sticking part. 本発明に係る商品の包装構造のさらに別の実施形態を示す断面図である。It is sectional drawing which shows another embodiment of the packaging structure of the goods which concern on this invention. 背貼り部の具体的構成を示す断面図である。It is sectional drawing which shows the specific structure of a back sticking part. 背貼り部の変形例を示す断面図である。It is sectional drawing which shows the modification of a back sticking part. 包装体の開封過程を示す斜視図である。It is a perspective view which shows the opening process of a package. 商品の包装構造の従来例を示す斜視図である。It is a perspective view which shows the prior art example of the packaging structure of goods. 従来例における背貼り部の状態を示す断面図である。It is sectional drawing which shows the state of the back pasting part in a prior art example.

Explanation of symbols

１被包装物
２包装体
２ａ筒状包装体
３背貼り部
４溶断シール部
５第１側辺部
５ａ第１側辺部の遊端部
５ｂ第１側辺部の基端部
６第２側辺部
９包装用フィルム DESCRIPTION OF SYMBOLS 1 Packaged object 2 Package 2a Cylindrical package 3 Back sticking part 4 Fusing seal part 5 1st side part 5a Free end part of 1st side part 5b Base end part of 1st side part 6 2nd side Side 9 Packaging film

Claims

While forming the cylindrical package body which has a back pasting part by sticking the right and left both sides of the packaging film which has heat shrinkability on each other, and in the state where the article to be packaged is inserted in this cylindrical package body A packaging structure of a product in which a cylindrical package body is fused and sealed before and after that to form a package body having a fusing seal portion, and the package body is heat-shrinked and closely adhered to an object to be packaged. A first side portion having a large width dimension and a second side portion having a small width dimension are provided on the left and right side portions of the packaging film constituting the portion, and the free end portion of the first side portion is the base end side. A product packaging, wherein the folded portion and the second side portion form a three-layer overlapped portion, and the overlapped portion is formed by sealing the overlapped portion integrally. Construction.

The packaging structure for a product according to claim 1, wherein three layers are formed by superimposing the second side portion on the outer surface of the folded portion formed by folding the free end portion of the first side portion toward the base end portion. A product packaging structure characterized by forming a superposition part of the structure.

In the packaging structure of the product according to claim 2, fusing and sealing is integrally performed with the main body portion of the packaging body in a state in which the back adhesive portion is bent in a direction in which the second side portion is brought into contact with the main body portion of the packaging body. Product packaging structure characterized by