JP2804154B2 - Heat shrink wrap - Google Patents
Heat shrink wrapInfo
- Publication number
- JP2804154B2 JP2804154B2 JP2119319A JP11931990A JP2804154B2 JP 2804154 B2 JP2804154 B2 JP 2804154B2 JP 2119319 A JP2119319 A JP 2119319A JP 11931990 A JP11931990 A JP 11931990A JP 2804154 B2 JP2804154 B2 JP 2804154B2
- Authority
- JP
- Japan
- Prior art keywords
- film
- heat
- envelope
- edge
- package
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000002216 antistatic agent Substances 0.000 claims description 27
- 238000006116 polymerization reaction Methods 0.000 claims description 17
- 239000003795 chemical substances by application Substances 0.000 claims description 14
- 229920003002 synthetic resin Polymers 0.000 claims description 13
- 239000000057 synthetic resin Substances 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 11
- 239000011248 coating agent Substances 0.000 claims description 7
- 238000000576 coating method Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 description 14
- 239000002981 blocking agent Substances 0.000 description 13
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 238000004806 packaging method and process Methods 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 239000003093 cationic surfactant Substances 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229920006257 Heat-shrinkable film Polymers 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000003945 anionic surfactant Substances 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
Classifications
-
- 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
- B65D75/52—Details
- B65D75/58—Opening or contents-removing devices added or incorporated during package manufacture
- B65D75/5827—Tear-lines provided in a wall portion
-
- 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
- B65D75/002—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 in shrink films
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Packages (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は、容易に開封することが可能な、熱収縮性合
成樹脂フィルムによる熱収縮包装体に関するものであ
る。Description: TECHNICAL FIELD The present invention relates to a heat-shrinkable package made of a heat-shrinkable synthetic resin film, which can be easily opened.
（従来の技術） 従来の熱収縮性合成樹脂フィルムによる熱収縮包装体
の開封を容易にする技術としては、フィルムの適宜位置
に開封用のパーフォレーションを付設し、該パーフォレ
ーション部より破袋させる方法、又は、熱板による合掌
シールによって被包装物を包装する際に、該合掌面によ
って融着しないインキによる印刷部を設け、該印刷部よ
り開封する方法（特公昭57−5160号）、或いは熱収縮性
合成樹脂フィルムの縁部にラベルを貼った後、該フィル
ムの両縁部を重ね合せて筒状体を形成させ、封筒貼り部
分に挿入されたラベルを引っ張る方法等がある。(Prior Art) As a conventional technique for facilitating opening of a heat-shrinkable package made of a heat-shrinkable synthetic resin film, a method of attaching perforation for opening at an appropriate position of a film and breaking the bag from the perforation portion, Or, when packaging an object to be packaged by a joint seal made of a hot plate, a printing part is formed by an ink which is not fused by the joint surface, and is opened from the printed part (Japanese Patent Publication No. 57-5160), or heat shrinkage. After a label is attached to the edge of the conductive synthetic resin film, both edges of the film are overlapped to form a tubular body, and the label inserted into the envelope attachment portion is pulled.
（発明が解決しようとする問題点） しかしながら、パーフォレーションを付設する方法に
ついては、フィルムの加熱収縮時にパーフォレーション
の孔が拡大し、包装体内の空気が一度に排出するために
熱収縮包装仕上がりが悪くなったり、或いは、熱収縮包
装体を取り扱う時に、該パーフォレーションの孔から切
断し、破袋を生じる等の大きな欠点があった。一方、合
掌シール方式を採用した方法については、ヒートシール
方式のために接合部が熱収縮により変形したり、或い
は、接合部が包装体の外方に突出するため外観が悪くな
るなどの問題があった。更に、該熱収縮包装体を積み重
ねる場合にも、突出している合掌シール部が邪魔にな
り、不安定な状態になる等の欠点があった。又、熱収縮
合性合成樹脂フィルムの縁部にラベルを貼り、該フィル
ムを封筒貼して重ね合せ部分にラベルを挿入させた熱収
縮包装体は、開封の際にラベルを引っ張ってもフィルム
に切り目がないため、容易に開封できない等の欠点があ
った。(Problems to be Solved by the Invention) However, in the method of attaching perforations, the holes of the perforations expand at the time of heat shrinkage of the film, and the air inside the package is discharged at one time, so that the finish of the heat shrink package becomes poor. When handling the heat-shrinkable package, there is a major drawback in that the package is cut from the perforation hole and breaks the bag. On the other hand, the method employing the joint seal method has a problem that the heat seal method causes the joint to be deformed by heat shrinkage, or the joint to protrude outward from the package, resulting in poor appearance. there were. Further, when stacking the heat-shrinkable packages, there is a drawback in that the protruding joint seal portion is in the way and becomes unstable. In addition, a heat-shrinkable synthetic resin film has a label attached to an edge thereof, the film is attached to an envelope, and a label is inserted into an overlapped portion. Since there are no cuts, there are drawbacks such as the inability to open easily.
（課題を解決するための手段） 本発明はこれらの欠点を除去して、容易に開封するこ
とができ、しかも、外観の美麗な熱収縮包装体を提供す
るために、次のような手段で講じた。(Means for Solving the Problems) In order to provide a heat-shrinkable package which can be easily opened and removes these drawbacks and has a beautiful appearance, the present invention uses the following means. Taken.
即ち、本発明は、熱収縮性合成樹脂フィルムの一対の
縁部を相互に封筒貼り状に重合させ且つ同重合部をシー
ルしてなる封筒張り筒状体内に被包装物品を収容しさら
に前記筒状体の両端を溶断シールした後該筒状体を熱収
縮させて得られる包装体において、前記一対のフィルム
縁部の重合部に、外重ねされた一方のフィルム縁部の端
縁から所定の幅内において前記両フィルム縁部の接合面
間に該重合部の延び方向と同方向に延びる帯状の帯電防
止剤又はアンチブロッキング剤の塗布部を有する第１重
合帯域を形成する一方、同重合部のうち帯電防止剤又は
アンチブロッキング剤の塗布部を有しない第２重合帯域
においては相互に重合する一対のフィルム縁部の少なく
とも一方にパーフォレーションを形成し、且つその状態
において該重合部に静電シールを施していることを特徴
とするものである。That is, the present invention provides an envelope-sealed tubular body in which a pair of edges of a heat-shrinkable synthetic resin film are superposed on each other in an envelope-attached manner and the polymerized portion is sealed, and the article to be packaged is further stored in the envelope-sealed tubular body. In a package obtained by heat-shrinking the tubular body after fusing and sealing both ends of the tubular body, a predetermined portion from the edge of one of the film edges superposed on the overlapped portion of the pair of film edges. Forming a first polymerization zone having a band-shaped antistatic agent or antiblocking agent coating portion extending in the same direction as the extension direction of the overlapping portion between the joining surfaces of the film edges within the width; In the second polymerization zone having no coated portion of the antistatic agent or the anti-blocking agent, perforation is formed on at least one of the pair of film edges polymerized with each other, and in that state, And it is characterized in that it subjected to electrostatic seal.
そして、その工程は次のようにして行なわれる。 The process is performed as follows.
すなわち、先ず、熱収縮性合成樹脂フィルムの少なく
とも一方の縁部に流れ方向に沿ってパーフォレーション
を形成し、該パーフォレーション部分が重ね合せ部にく
るように、該フィルムの両縁部を封筒貼り状に重ね合
せ、該重ね合せ部分に静電気を印加させた両フィルム縁
部を密着させる。即ち、静電シール方式によって封筒貼
りを行い筒状体を形成させる。その際、帯電防止剤又は
アンチブロック剤の帯状の塗布部を、両縁部の重ね合せ
部の間に位置させ、しかも、パーフォレーション部分よ
りも筒状体の外側のフィルム縁部に近くなるように適宜
設ける。その結果、両フィルム縁部の重合部には、該重
合部の延び方向と同方向に延びる帯状の帯電防止剤又は
アンチブロッキング剤の塗布部を有する第１重合帯域
と、そのような帯電防止剤又はアンチブロッキング剤の
塗布部を有しないで、且つ相互に重合する両フィルム縁
部の少なくとも一方側にパーフォレーションが形成され
てなる第２重合帯域とが存在せしめられることになる。
そして、そのように構成された封筒貼り筒状体内に被包
装物を包み込んだ後、前記両端部を溶断シールし、加熱
収縮させて本発明の熱収縮包装体を得るものである。That is, first, at least one edge of the heat-shrinkable synthetic resin film is formed with perforations along the flow direction, and both edges of the film are formed into an envelope-attached shape so that the perforated portion comes to the overlapping portion. The two film edges to which the static electricity is applied are brought into close contact with the overlapped portion. That is, the envelope is stuck by the electrostatic sealing method to form a tubular body. At that time, the band-shaped application portion of the antistatic agent or the anti-blocking agent is located between the overlapping portions of the both edges, and is closer to the outer film edge of the tubular body than the perforated portion. Provided as appropriate. As a result, a first polymerization zone having a band-shaped antistatic agent or antiblocking agent coated portion extending in the same direction as the direction of extension of the polymerized portion is provided in the polymerized portion at both film edge portions, Alternatively, a second polymerization zone in which a perforation is formed on at least one side of both film edges that are polymerized with each other without an application portion of the antiblocking agent is present.
Then, after the object to be packaged is wrapped in the envelope-attached tubular body configured as described above, the both ends are melt-sealed and heat-shrinked to obtain the heat-shrinkable package of the present invention.
これを図面を参照して例示すると、第１図は、本発明
の熱収縮包装体の一実施例を示す斜視図であり、熱収縮
性合成樹脂フィルムにおける封筒貼り状の両縁部重合部
４にパーフォレーション２と、帯電防止剤又はアンチブ
ロッキング剤の帯状の塗布部３が設けられ、且つ同封筒
貼り重合部に静電シールが施され、しかも、被包装物の
前後が溶断シール５されている。FIG. 1 is a perspective view showing one embodiment of the heat-shrinkable package according to the present invention. Is provided with a perforation 2 and a band-shaped application portion 3 of an antistatic agent or an anti-blocking agent, an electrostatic seal is applied to the overlapping portion of the envelope, and a fusing seal 5 is provided before and after the packaged object. .
第２図は、第１図における熱収縮性合成樹脂フィルム
のａ−ａ′線部分の拡大断面図であり、封筒貼り重合部
４におけるパーフォレーション２と静電防止剤又はアン
チブロッキング剤の塗布部３との位置関係を示した概略
図である。そして、Ａは筒状体における外重ねされた側
のフィルム縁部を、Ｂは筒状体における内重ねされた側
のフィルム縁部を示す。尚、第２図においては、封筒貼
り重合部４のうち、外重ね側のフィルム縁部Ａの端縁か
ら所定の幅ｌの範囲が、第１重合帯域4aでこの帯域4a内
において両フィルム端部A,Bの接合面の間に帯電防止剤
又はアンチブロッキング剤の塗布部３が形成され、封筒
貼り重合部４の残りの部分である第２重合帯域4bにおい
て、パーフォレーション２が形成されている。FIG. 2 is an enlarged cross-sectional view taken along the line aa ′ of the heat-shrinkable synthetic resin film in FIG. 1, and shows a perforation 2 and an antistatic or anti-blocking agent application section 3 in an envelope pasting section 4. It is the schematic which showed the positional relationship with. A indicates the film edge on the outer superposed side of the cylindrical body, and B indicates the film edge on the inner superposed side of the cylindrical body. In FIG. 2, a range of a predetermined width 1 from the edge of the film edge portion A on the outer lapping side of the envelope sticking overlapping portion 4 is the first overlapping zone 4a, and both film ends in this zone 4a. An application portion 3 of an antistatic agent or an anti-blocking agent is formed between the joining surfaces of the portions A and B, and a perforation 2 is formed in a second polymerization zone 4b which is the remaining portion of the envelope application polymerization portion 4. .
本発明におけるパーフォレーション加工については特
に限定されるものではなく、従来一般に行なわれている
方法や形状等をそのまま用いることができる。又、パー
フォレーションの位置については、該フィルムの少なく
とも一方の縁部に流れ方向に沿って加工される。しか
し、パーフォレーションの位置が、フィルムの両縁部を
重ね合せて筒状に成型される際に、筒状体の外重ね側の
フィルム縁部から近すぎると、包装加工時にパーフォレ
ーションの穴が重ね合せ部から外れる場合が生じ、熱収
縮包装仕上がりが悪くなり、しかも、取り扱い時に破袋
を生じ易くなり、好ましくない。又、筒状体の内重ね側
のフィルム縁部から近すぎる場合にも、封筒貼り部のシ
ール強度が弱くなり、熱収縮包装体を取り扱う際に容易
にシール破袋を生じてしまい、好ましくない。更に、筒
状体の外重ね側のフィルム縁部から遠すぎる場合には、
幾ら帯電防止剤等の塗布部を設けても、開封性が劣り、
又筒状体の内重ね側のフィルム縁部から遠すぎる場合に
は、合成樹脂フィルムが多く必要になり、共に好ましく
ない。そこで、封筒貼り重合部でのパーフォレーション
の位置としては、筒状体の内重ね側及び外重ね側のフィ
ルム縁部からパーフォレーション部分までの距離がそれ
ぞれ３乃至30mmであることが好ましい。The perforation processing in the present invention is not particularly limited, and a method, a shape, and the like, which are conventionally generally performed, can be used as they are. As for the position of the perforation, at least one edge of the film is processed along the flow direction. However, when the perforation position is too close to the film edge on the outer lap side of the tubular body when the film is formed into a tubular shape by overlapping both edges of the film, the perforation holes overlap during packaging. In some cases, the heat-shrinkable packaging finish is deteriorated, and the bag is easily broken during handling, which is not preferable. Also, when the film is too close to the film edge on the inner lapping side of the tubular body, the sealing strength of the envelope sticking portion is weakened, and the seal breakage easily occurs when handling the heat shrinkable package, which is not preferable. . Furthermore, when it is too far from the film edge on the outer layer side of the cylindrical body,
No matter how much antistatic agent or the like is provided, the openability is poor,
On the other hand, if it is too far from the inner edge of the cylindrical body, a large amount of synthetic resin film is required, which is not preferable. Therefore, as the position of the perforation in the overlapping portion of the envelope, it is preferable that the distance from the film edge portion on the inner lapping side and the outer lapping side of the cylindrical body to the perforation portion is 3 to 30 mm, respectively.
帯電防止剤又はアンチブロッキング剤の塗布部につい
ては、少なくとも一部が封筒貼り重合部に掛かり、しか
も、該部分がパーフォレーション部分よりも筒状体の外
重ね側のフィルム縁部に近い位置に設けることが必要で
ある。帯電防止剤又はアンチブロッキング剤の塗布部
が、パーフォレーション部分と筒状体の内重ね側のフィ
ルム縁部との間に存在すると、封筒貼り部のシール強度
が弱くなり、本発明の目的が達成出来ない。Regarding the application portion of the antistatic agent or the anti-blocking agent, at least a part of the coating portion overlaps with the envelope sticking portion, and the portion is provided at a position closer to the outer edge of the tubular body than the perforated portion. is required. When the coated portion of the antistatic agent or the anti-blocking agent is present between the perforated portion and the film edge on the inner layer side of the tubular body, the sealing strength of the envelope attached portion is weakened, and the object of the present invention can be achieved. Absent.
又、該塗布部を両フィルム縁部が重なり合う面で、し
かも、パーフォレーション部分から筒状体の外重ね側の
フィルム縁部までの全面に設けると、封筒貼り重合部の
シール強度の低下が大き過ぎる場合には、帯電防止剤又
はアンチブロッキング剤の塗布面の幅を狭くするか、又
は、断続状に設けるか、或いは、間隔を空けた数本のラ
イン状にすることが好ましい。Further, if the coating portion is provided on the surface where both film edges overlap, and is provided on the entire surface from the perforated portion to the film edge on the outer lapping side of the tubular body, the seal strength of the envelope sticking overlapping portion is excessively reduced. In this case, it is preferable to reduce the width of the surface to which the antistatic agent or the antiblocking agent is applied, to provide the surface in an intermittent manner, or to form several lines at intervals.
尚、該塗布部を設ける場所としては、パーフォレーシ
ョンを形成する側のフィルム縁部でも、反対側のフィル
ム縁部でも、或いは又、両方のフィルム縁部でもよい。
又、帯電防止剤とアンチブロッキング剤を混合させた塗
布部を設けたり、或いは帯電防止剤の塗布部とアンチブ
ロッキング剤の塗布部を共に設けることもできる。The location where the coating portion is provided may be at the film edge on the side where perforation is formed, at the opposite film edge, or at both film edges.
Further, an application portion in which an antistatic agent and an antiblocking agent are mixed may be provided, or both an application portion of the antistatic agent and an application portion of the antiblocking agent may be provided.
帯電防止剤、又は、アンチブロッキング剤のコート方
法としては、帯電防止剤やアンチブロッキング剤をアル
コールや水等の液体に溶かすか、又は、均一で安定な状
態に分散させて、ロール方式等によりコートするのが一
般的である。しかし、この様な方法に限定されるもので
はなく、例えば、帯電防止剤の場合に、一般に印刷時に
添加するよりも多量に添加させて印刷する方法等も可能
である。An antistatic agent or an antiblocking agent can be coated by dissolving the antistatic agent or the antiblocking agent in a liquid such as alcohol or water, or by dispersing it in a uniform and stable state, and coating by a roll method or the like. It is common to do. However, the method is not limited to such a method. For example, in the case of an antistatic agent, a method of printing by adding a larger amount than that generally added at the time of printing can be used.
帯電防止剤として、特に限定されるものではないが、
該塗布部を静電シールした際に、強固な密着性を生じさ
せないようにするものが好ましい。例えば、カチオン系
活性剤、アニオン系活性剤等の界面活性剤が用いられ
る。更に具体的には、インキの補助剤として一般に用い
られている帯電防止剤等が好適に用いられる。As the antistatic agent, although not particularly limited,
It is preferable to use a material that does not cause strong adhesion when the applied portion is electrostatically sealed. For example, surfactants such as a cationic surfactant and an anionic surfactant are used. More specifically, an antistatic agent generally used as an auxiliary agent for the ink is preferably used.
又、アンチブロッキング剤としても特に限定されるも
のではないが、従来一般的な合成樹脂フィルムに用いら
れているものが使用できる。例えば、シリカ系のアンチ
ブロッキング剤等がある。そして、それらをコートする
ために、該アンチブロッキング剤は水等の溶液に均一
に、しかも、安定な状態に分散されたものが好ましい。Further, the anti-blocking agent is not particularly limited, but those conventionally used in general synthetic resin films can be used. For example, there is a silica-based anti-blocking agent. In order to coat them, it is preferable that the anti-blocking agent is uniformly dispersed in a solution such as water in a stable state.
本発明における静電シールとは、合成樹脂フィルムの
両縁部を封筒貼り状に重ね合せた部分に、従来の熱板に
代わって静電気発生器により静電気をフィルムに印加す
ることによって、フィルム間に一種のブロッキングを生
じせしめ、重ね合せ部分の全面に亘って幅広く密着させ
るものである。そのため、静電シールによるシール部
は、従来の熱板によるシール方法と異なり、外観上見苦
しいシール痕もなく、平坦で透明かつ美麗な外観を呈す
るものである。The electrostatic seal in the present invention is a method in which static electricity is applied to a film by using an electrostatic generator instead of a conventional hot plate at a portion where both edges of a synthetic resin film are overlapped with each other in an envelope shape, so that a film is formed between the films. A kind of blocking is caused, and the adhesive is widely adhered over the entire overlapping portion. Therefore, unlike the conventional sealing method using a hot plate, the sealing part using an electrostatic seal has a flat, transparent, and beautiful appearance without any unsightly seal marks.
（作 用） 本発明の熱収縮包装体における封筒貼り重合部は、静
電シール時に於いて、パーフォレーション部分と筒状体
の外重ね側のフィルム縁部との間の、帯電防止剤やアン
チブロッキング剤がコートされた部分（第１重合帯域）
が密着性が乏しく、しかも、熱収縮後に於いても、その
密着性は増加していない。それに対し、パーフォレーシ
ョン部分から筒状体の内重ね側のフィルム縁部までの、
帯電防止剤がコートされていない部分（第２重合帯域）
は、静電シール時に密着性が良好で、しかも、該部分は
熱収縮後にさらにその密着性を増加させている。(Operation) In the heat-shrinkable package of the present invention, the overlapped portion of the envelope is provided with an antistatic agent and an anti-blocking agent between the perforated portion and the film edge on the outer side of the tubular body during the electrostatic sealing. Part coated with agent (first polymerization zone)
However, the adhesiveness is poor, and the adhesiveness does not increase even after heat shrinkage. On the other hand, from the perforation part to the film edge on the inner lapping side of the cylindrical body,
Part not coated with antistatic agent (second polymerization zone)
Has good adhesion at the time of electrostatic sealing, and furthermore, this portion further increases its adhesion after heat shrinkage.
そのため、開封時に熱収縮包装体の封筒貼り重合部を
両側に引っ張るパーフォレーション部分から筒状体の内
重ね側フィルム縁部までの密着は剥がれないが、パーフ
ォレーション部分から筒状体の外重ね側のフィルム縁部
までの、帯電防止剤やアンチブロッキング剤が帯状にコ
ートされた部分は、容易に剥離を生じ、その結果、パー
フォレーション部分から引き裂きを生じる。即ち、容易
に開封することができる。Therefore, the adhesion from the perforated portion of the heat-shrinkable package body that pulls the overlapped portion of the heat-shrinkable package to both sides from the perforation portion to the inner film side edge of the tubular body does not peel off when opened, but the film on the outer layer side of the tubular body from the perforated portion The portion of the strip coated with the antistatic agent or the antiblocking agent up to the edge easily peels off, and as a result, tears from the perforated portion. That is, it can be easily opened.
しかも、一般的な取り扱い時には、一方のフィルム縁
部のパーフォレーション部分が他方のフィルム縁部によ
って覆われているために、容易に破袋し難い。特に、内
重ねされたフィルム縁部のパーフォレーション部が外重
ねされたフィルム縁部によって覆われている場合に顕著
である。In addition, during general handling, the perforated portion of one film edge is covered by the other film edge, so that it is difficult to break the bag easily. In particular, this is remarkable when the perforated portion of the inner superposed film edge is covered by the outer superposed film edge.
更に、パーフォレーションの孔がフィルム縁部によっ
て密封されているので、加熱収縮時に包装体内の空気が
一度に排出しないために、熱収縮包装仕上がりが良好で
ある。Furthermore, since the perforation hole is sealed by the film edge, the air inside the package is not exhausted at one time during heat shrinkage, so that the heat shrink wrapping finish is good.
［実施例］ 以下、本発明の実施例を示し、本発明の内容をより具
体的に説明する。Examples Hereinafter, examples of the present invention will be described, and the contents of the present invention will be described more specifically.
（実施例１） ポリプロピレン系熱収縮性フィルムの一方の端縁から
10mmの位置に、長さ3mmで間隔が1.5mmの切り目をミシン
目状に一筋生じさせるパーフォレーション加工を行い、
そのすぐ内側にインキの帯電防止剤として一般に用いら
れているカチオン系の界面活性剤をアルコールに溶か
し、ロール方式によって幅30mmの塗布部を形成した。該
フィルムの帯電防止剤の塗布部が重ね合せの間にくるよ
うに両縁部を30mm幅で重ね合せ、静電シール方式により
筒状体を成型した。該筒状体にノートブック３冊を挿入
し、前後両端を溶断シールした後、熱収縮トンネル中を
通過させて熱収縮包装体を得た。(Example 1) From one edge of a polypropylene-based heat-shrinkable film
At the 10mm position, perform perforation processing to create a cut line with a length of 3mm and an interval of 1.5mm in a perforated shape,
Immediately inside, a cationic surfactant generally used as an antistatic agent for the ink was dissolved in alcohol, and a 30 mm-wide coating was formed by a roll method. Both edges were overlapped with a width of 30 mm so that the portion of the film to which the antistatic agent was applied was between the overlaps, and a cylindrical body was formed by an electrostatic sealing method. After inserting three notebooks into the cylindrical body and fusing and sealing the front and rear ends, the cylindrical body was passed through a heat shrink tunnel to obtain a heat shrinkable package.
得られた熱収縮包装体は、熱収縮包装仕上がりが良好
で、一般的な取り扱い時には破袋するようなことがなか
った。しかも、ノートブックを取り出そうとして封筒貼
り重合部を両側に引っ張るとパーフォレーション部が引
き裂きを生じ、容易に開封することが出来た。The obtained heat-shrinkable package had a good heat-shrinkable finish, and did not break during general handling. In addition, when the overlapped portion of the envelope was pulled to both sides in order to take out the notebook, the perforation portion was torn and the opening was easy.
（実施例２） 実施例１における帯電防止剤の代わりに、シリカ系の
アンチブロッキング剤を均一に分散させた水溶液を用い
る以外は、実施例１と同じ方法によって熱収縮包装体を
得た。尚、該水溶液には約30％のアンチブロッキング剤
を含んでいた。(Example 2) A heat-shrinkable package was obtained in the same manner as in Example 1 except that an aqueous solution in which a silica-based antiblocking agent was uniformly dispersed was used instead of the antistatic agent in Example 1. The aqueous solution contained about 30% of an anti-blocking agent.
得られた熱収縮包装体は、実施例１と同様、開封が容
易で、しかも、熱収縮包装仕上がりが良好であった。更
に、一般的な取り扱い時には破袋するようなこともなか
った。As in Example 1, the obtained heat-shrinkable package was easy to open and the heat-shrinkable package finish was good. Furthermore, the bag did not break during general handling.
（発明の効果） 本発明の熱収縮包装体は、上記した如く、静電シール
による封筒貼り重合部に、パーフォレーションと静電防
止剤又はアンチブロッキング剤の塗布部とを特定の条件
で存在させているため、一般的な取り扱い時には破袋を
生じ難い反面、被包装物を取り出そうとするときには、
静電シールされた封筒貼り重合部から容易に開封するこ
とが出来る。(Effect of the Invention) As described above, the heat-shrinkable package of the present invention is obtained by allowing perforation and an application part of an antistatic agent or an antiblocking agent to be present under specific conditions in an envelope-attached polymerization part by an electrostatic seal. Therefore, it is difficult to break the bag during general handling, but when trying to take out the packaged item,
The envelope can be easily opened from the overlapped portion of the envelope that has been electrostatically sealed.
更に、本発明の熱収縮包装体は、加熱収縮時にパーフ
ォレーションの孔から包装体内の空気が一度に排出する
ようなことがなく、良好なる熱収縮包装仕上がりを有し
ている。Further, the heat-shrinkable package of the present invention has a good heat-shrinkable package finish without air being exhausted at once from the perforation holes during heat shrinkage.
第１図は、本発明の一実施例にかかる熱収縮包装体を示
す斜視図、第２図は、第１図における熱収縮性合成樹脂
フィルムのａ−ａ′線部分断面図である。 １……熱収縮性合成樹脂フィルム ２……パーフォレーション ３……静電防止剤又はアンチブロッキング剤の塗布部 ４……封筒貼り重合部 4a……第１重合帯域 4b……第２重合帯域 ５……溶断シール部 Ａ……筒状体の外重ね側のフィルム縁部 Ｂ……筒状体の内重ね側のフィルム縁部FIG. 1 is a perspective view showing a heat-shrinkable package according to an embodiment of the present invention, and FIG. 2 is a partial cross-sectional view of the heat-shrinkable synthetic resin film taken along the line aa 'in FIG. DESCRIPTION OF SYMBOLS 1 ... Heat-shrinkable synthetic resin film 2 ... Perforation 3 ... Application part of antistatic agent or anti-blocking agent 4 ... Envelope adhesion polymerization part 4a ... 1st polymerization zone 4b ... 2nd polymerization zone 5 ... ... Fusing seal part A ... Film edge on the outer layer side of the cylindrical body B ... Film edge part on the inner layer side of the cylindrical body
Claims (1)
縁部（Ａ），（Ｂ）を相互に封筒貼り状に重合させ且つ
同重合部をシールしてなる封筒張り筒状体内に被包装物
品を収容しさらに前記筒状体の両端を溶断シールした後
該筒状体を熱収縮させて得られる包装体であって、前記
一対のフィルム縁部（Ａ），（Ｂ）の重合部（４）は、
外重ねされた一方のフィルム縁部（Ａ）の端縁から所定
の幅（ｌ）内において前記両フィルム縁部（Ａ），
（Ｂ）の接合面間に該重合部（４）の延び方向と同方向
に延びる帯状の帯電防止剤又はアンチブロッキング剤の
塗布部（３）を有する第１重合帯域（4a）が形成される
一方、同重合部（４）のうち帯電防止剤又はアンチブロ
ッキング剤の塗布部を有しない第２重合帯域（4b）にお
いては相互に重合する一対のフィルム縁部（Ａ），
（Ｂ）の少なくとも一方にパーフォレーション（２）が
形成されており、且つその状態において該重合部（４）
に静電シールが施されていることを特徴とする熱収縮包
装体。1. A pair of edges (A) and (B) of a heat-shrinkable synthetic resin film (1) are superposed on each other in an envelope-attached state, and the superposed portion is sealed in an envelope-covered cylindrical body. A package obtained by accommodating an article to be packaged, and further by fusing and sealing both ends of the tubular body and then thermally shrinking the tubular body, wherein the polymerization of the pair of film edges (A) and (B) is performed. Part (4)
The two film edges (A), within a predetermined width (l) from the edge of the one film edge (A) that is superposed outside.
A first polymerization zone (4a) having a strip-shaped antistatic agent or antiblocking agent application portion (3) extending in the same direction as the direction of extension of the polymerization portion (4) is formed between the bonding surfaces of (B). On the other hand, in the second polymerization zone (4b) having no coating portion of the antistatic agent or the antiblocking agent in the polymerization portion (4), a pair of film edges (A) that polymerize with each other,
A perforation (2) is formed in at least one of (B), and in this state, the polymerized part (4)
A heat-shrinkable package, wherein an electrostatic seal is applied to the package.
Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2119319A JP2804154B2 (en) | 1990-05-08 | 1990-05-08 | Heat shrink wrap |
| US07/630,166 US5129518A (en) | 1989-12-22 | 1990-12-19 | Plastic film package with perforated edge portions |
| GB9027690A GB2239854B (en) | 1989-12-22 | 1990-12-20 | Film-packaged article |
| CA002032975A CA2032975C (en) | 1989-12-22 | 1990-12-21 | Film-packaged article |
| KR1019900021446A KR0145293B1 (en) | 1989-12-22 | 1990-12-22 | Film packaged article |
| AU68452/90A AU631277B2 (en) | 1989-12-22 | 1990-12-24 | Film-packaged article |
| ITMI911225A IT1247538B (en) | 1990-05-08 | 1991-05-06 | ARTICLE PACKED WITH FILM |
| FR9105597A FR2661894A1 (en) | 1990-05-08 | 1991-05-07 | Packaging item |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2119319A JP2804154B2 (en) | 1990-05-08 | 1990-05-08 | Heat shrink wrap |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0418264A JPH0418264A (en) | 1992-01-22 |
| JP2804154B2 true JP2804154B2 (en) | 1998-09-24 |
Family
ID=14758515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2119319A Expired - Fee Related JP2804154B2 (en) | 1989-12-22 | 1990-05-08 | Heat shrink wrap |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2804154B2 (en) |
| FR (1) | FR2661894A1 (en) |
| IT (1) | IT1247538B (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1444519A (en) * | 1965-08-12 | 1966-07-01 | Dow Chemical Co | Resealable container |
| US3511746A (en) * | 1966-09-12 | 1970-05-12 | Us Plywood Champ Papers Inc | Easy opening heat sealed package |
| DE8215687U1 (en) * | 1982-05-28 | 1982-09-09 | Unilever N.V., 3000 Rotterdam | Tubular bag packaging |
| GB8308303D0 (en) * | 1983-03-25 | 1983-05-05 | Smiths Bros Whitehaven Ltd | Pouches |
| DE3542565C2 (en) * | 1984-12-03 | 1994-03-31 | Asahi Chemical Ind | Plastic bag and process for its manufacture |
| DE8706379U1 (en) * | 1987-05-05 | 1988-09-08 | Beiersdorf Ag, 2000 Hamburg | Adhesive tape as a resealable closure |
| JPH02282073A (en) * | 1989-04-20 | 1990-11-19 | Okura Ind Co Ltd | Package by heat shrinkable synthetic resin film |
-
1990
- 1990-05-08 JP JP2119319A patent/JP2804154B2/en not_active Expired - Fee Related
-
1991
- 1991-05-06 IT ITMI911225A patent/IT1247538B/en active IP Right Grant
- 1991-05-07 FR FR9105597A patent/FR2661894A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| IT1247538B (en) | 1994-12-17 |
| ITMI911225A1 (en) | 1992-11-06 |
| ITMI911225A0 (en) | 1991-05-06 |
| FR2661894A1 (en) | 1991-11-15 |
| JPH0418264A (en) | 1992-01-22 |
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