JP2000326996A - Re-sealable bag - Google Patents

Re-sealable bag

Info

Publication number
JP2000326996A
JP2000326996A JP14364599A JP14364599A JP2000326996A JP 2000326996 A JP2000326996 A JP 2000326996A JP 14364599 A JP14364599 A JP 14364599A JP 14364599 A JP14364599 A JP 14364599A JP 2000326996 A JP2000326996 A JP 2000326996A
Authority
JP
Japan
Prior art keywords
bag
thermoplastic resin
tape
resin
resin tape
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.)
Pending
Application number
JP14364599A
Other languages
Japanese (ja)
Inventor
Osamu Nakamura
収 中村
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Idemitsu Petrochemical Co Ltd
Original Assignee
Idemitsu Petrochemical Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Idemitsu Petrochemical Co Ltd filed Critical Idemitsu Petrochemical Co Ltd
Priority to JP14364599A priority Critical patent/JP2000326996A/en
Publication of JP2000326996A publication Critical patent/JP2000326996A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/80—Packaging reuse or recycling, e.g. of multilayer packaging

Landscapes

  • Bag Frames (AREA)
  • Adhesive Tapes (AREA)
  • Adhesives Or Adhesive Processes (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a re-sealable bag which is capable of being heated by a microwave oven, free from any problems in disposal after the use, and recyclable by welding side seal parts of both side parts of the bag using a thermoplastic resin tape having a thick-walled part or a needle-like body. SOLUTION: A thick-walled part 2 is integratedly formed along the longitudinal direction of a tape 1 at an intermediate part in the width direction of the thermoplastic resin tape 1, and side seal parts 25 on both sides of a film bag are welded using this thermoplastic resin tape 1 to obtain a re-sealable bag 22. This re-sealable bag 22 is plastically deformed by the folding and the winding to achieve the sealing effect of an unsealing end port of the bag when the thick-walled part 2 is welded. The thermoplastic resin tape 1 is manufactured by extruding, for example, a high density polyethylene resin using an odd-shaped die, and a resin of at least 500 MPa in modulus of tensile elasticity and an ethylene-α-olefin copolymer of 0.86-0.94 g/cm3 in density are preferably used for a core resin and an outer layer resin, respectively.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】本発明は、菓子などの食品、
その他各種物品を包装する袋に関し、特に再封止性を有
する袋に関する。TECHNICAL FIELD The present invention relates to a food such as confectionery,
In addition, the present invention relates to a bag for packaging various articles, and particularly to a bag having resealability.

【０００２】[0002]

【従来の技術】従来、熱可塑性樹脂フイルムからなる袋
は、各種菓子類、キャンデー、海苔などの食品類やその
他各種物品の包装袋として多用されている。しかし、一
般に被包装物品を一度に食べたり、使用したりすること
は少なく、残りの被包装物を保存、保管するために、袋
の内容積が小さくなった状態で開封端を封止することが
行われている。この開封端を封止する方法としては、
輪ゴムを用いる方法。針金、または樹脂被覆針金を用
いる方法。凹凸溝を有する２個の棒状部材で袋を挟持
して嵌合する方法などが行われている。しかしながら、
これらの方法は、袋とは別の補助の封止具を用いるもの
であり、封止具が手元にない場合には再封止して保存、
保管できない問題点がある。2. Description of the Related Art Conventionally, bags made of a thermoplastic resin film have been frequently used as packaging bags for foods such as various confectioneries, candies, laver, and other various articles. However, in general, it is rare to eat or use the packaged items at once, and in order to store and store the remaining packaged items, seal the opening end with the bag inside volume reduced. Has been done. As a method of sealing this opening end,
Method using rubber bands. A method using wire or resin-coated wire. There is a method in which a bag is sandwiched and fitted between two rod-shaped members having concave and convex grooves. However,
These methods use an auxiliary closure separate from the bag, and if the closure is not at hand, reseal and save,
There is a problem that cannot be stored.

【０００３】このため、別途の補助封止具を用いること
なく、袋自体に再封止機能を持つ袋が知られている。た
とえば袋の開封端に、凹凸嵌合するチャック機構を設
けた袋が知られている。しかし、このチャック付きの袋
は、再封止性はすぐれているが、高価であることから、
一般の袋でなく、特殊な物品の包装に用いられているに
過ぎない。このため、袋の開封端部から反対側に向か
って、針金（金属）を設けた袋が知られている（登録実
用新案第３０５０３４３号公報、特開平１１−１０００
４８号公報）。しかしながら、金属は、袋を閉じる性能
にはすぐれたものであるが、湿気に弱く、腐食し易いた
め衛生上問題があること、切断が容易でないこと、切断
端部で切傷する恐れがあること、電子レンジによる加熱
処理ができないことに加えて、袋としての廃棄処理、あ
るいはリサイクルによる再生使用が困難である問題点が
ある。For this reason, there is known a bag having a resealing function in the bag itself without using a separate auxiliary sealing device. For example, there is known a bag provided with a chuck mechanism for fitting concave and convex at an opening end of the bag. However, although this bag with a chuck has excellent resealability, it is expensive,
It is used not only for general bags but also for packaging special articles. For this reason, a bag provided with a wire (metal) from the opening end of the bag to the opposite side is known (Japanese Utility Model Registration No. 3050343, JP-A-11-1000).
No. 48). However, although the metal is excellent in the performance of closing the bag, it is vulnerable to moisture and easily corroded, so there is a hygiene problem, it is not easy to cut, there is a risk of cutting at the cut end, In addition to being unable to perform heat treatment using a microwave oven, there is a problem that it is difficult to dispose of the bag as a bag or to reuse it by recycling.

【０００４】[0004]

【発明が解決しようとする課題】本発明は、包装袋の内
容物の使用時、残存物を保存、保管するために、開封端
口を一次的に封止する場合において、別途、補助封止具
を必要とすることなく、袋自体に封止機能を持たせると
ともに、金属使用に見られる、腐食、切傷などがなく、
衛生性、安全性にすぐれるとともに、電子レンジ加熱が
可能で、廃棄処理やリサイクル性にもすぐれた袋および
この袋を得るために好適な熱可塑性樹脂テープを提供す
ることを目的とする。SUMMARY OF THE INVENTION According to the present invention, an auxiliary sealing device is separately provided in the case where the opening end is temporarily sealed in order to preserve and store the remaining contents when the contents of the packaging bag are used. Without the need for a bag, the bag itself has a sealing function, and there is no corrosion, cut, etc. found in metal use,
It is an object of the present invention to provide a bag excellent in hygiene and safety, capable of being heated by a microwave oven, and excellent in disposal and recycling, and a thermoplastic resin tape suitable for obtaining the bag.

【０００５】[0005]

【課題を解決するための手段】この発明は、衛生性、安
全性に問題がなく、電子レンジ加熱が可能で、使用後の
廃棄処理に問題がなく、リサイクルによる再使用が可能
であるように、塑性変形可能な熱可塑性樹脂テープまた
は針状体をフイルムに溶着し、一体化して再封止性の袋
とする。すなわち、本発明は、 （１） 厚肉部を有する熱可塑性樹脂テープまたは針状
体をフイルムに融着してなる再封止性袋。 （２） 厚肉部を有する熱可塑性樹脂テープまたは針状
体が、多層構造であり、芯材樹脂が引張弾性率が５００
ＭＰａ以上の樹脂であり、外層樹脂が、密度０．８６〜
０．９４ｇ／ｃｍ3 のエチレン−α−オレフィン共重合
体からなる上記（１）記載の再封止性袋。 （３） フイルムがエチレン−α−オレフィン共重合体
層を有する多層フイルムであり、該共重合体層が袋内面
である上記（１）または（２）記載の再封止袋。 （４） 熱可塑性樹脂テープまたは針状体をフイルム間
に挟持融着してなる上記（１）〜（３）のいずれかに記
載の再封止性袋。 （５） 熱可塑性樹脂テープまたは針状体をフイルム面
に融着してなる上記（１）〜（４）のいずれかに記載の
再封止性袋。 （６） 厚肉部を有する熱可塑性樹脂テープ。 （７） 厚肉部が芯材樹脂と外層樹脂からなる多層構造
である上記（６）記載の熱可塑性樹脂テープ。 （８） 芯材樹脂が引張弾性率が５００ＭＰａ以上の樹
脂であり、外層樹脂が、密度０．８６〜０．９４ｇ／ｃ
ｍ3 のエチレン−α−オレフィン共重合体からなる上記
（７）記載の熱可塑性樹脂テープを提供するものであ
る。SUMMARY OF THE INVENTION The present invention has been made so that there is no problem in hygiene and safety, microwave heating is possible, there is no problem in disposal after use, and reuse by recycling is possible. Then, a plastically deformable thermoplastic resin tape or needle-like body is welded to the film and integrated to form a resealable bag. That is, the present invention provides: (1) a resealable bag obtained by fusing a thermoplastic resin tape or needle having a thick portion to a film. (2) The thermoplastic resin tape or needle-like body having a thick part has a multilayer structure, and the core resin has a tensile modulus of 500.
MPa or higher, and the outer layer resin has a density of 0.86 to
The resealable bag according to the above (1), comprising a 0.94 g / cm 3 ethylene-α-olefin copolymer. (3) The resealing bag according to the above (1) or (2), wherein the film is a multilayer film having an ethylene-α-olefin copolymer layer, and the copolymer layer is an inner surface of the bag. (4) The resealable bag according to any one of the above (1) to (3), wherein a thermoplastic resin tape or a needle-like body is sandwiched and fused between the films. (5) The resealable bag according to any one of the above (1) to (4), wherein a thermoplastic resin tape or a needle-shaped body is fused to a film surface. (6) A thermoplastic resin tape having a thick portion. (7) The thermoplastic resin tape according to the above (6), wherein the thick portion has a multilayer structure composed of a core resin and an outer layer resin. (8) The core resin is a resin having a tensile modulus of 500 MPa or more, and the outer layer resin has a density of 0.86 to 0.94 g / c.
It is intended to provide a thermoplastic resin tape according to the above (7), comprising m 3 of an ethylene-α-olefin copolymer.

【０００６】[0006]

【発明の実施の形態】以下本発明について詳細に説明す
る。まず、本発明の再封止性袋に再封止性を発現するた
めに好ましく用いられるところの、本発明の熱可塑性樹
脂テープについて説明する。本発明の熱可塑性樹脂テー
プは、厚肉部を有する熱可塑性樹脂テープであり、この
厚肉部による塑性変形機能により、袋の開封端口を封止
することを可能にするとともに、薄肉部とともに袋を構
成するフイルムへの融着を可能にするものである。した
がって、この厚肉部は、通常熱可塑性樹脂テープの長手
方向の中央部に連続的に設けられる。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail. First, the thermoplastic resin tape of the present invention, which is preferably used for exhibiting the resealability of the resealable bag of the present invention, will be described. The thermoplastic resin tape of the present invention is a thermoplastic resin tape having a thick portion, and the plastic deformation function of the thick portion allows the opening end of the bag to be sealed, and the bag together with the thin portion. Can be fused to the film constituting the above. Therefore, this thick portion is usually provided continuously at the central portion in the longitudinal direction of the thermoplastic resin tape.

【０００７】本発明の熱可塑性樹脂テープは、塑性変形
可能な熱可塑性樹脂であれば、特に制限はなく、袋素材
に熱融着できるものの中から適宜選択して用いられる。
これら熱可塑性樹脂は、高密度ポリエチレン、低密度ポ
リエチレン、エチレン−α−オレフィン共重合体などの
ポリエチレン系樹脂、ポリプロピレン、軟質ポリプロピ
レン系樹脂、プロピレンと他のオレフィンとのランダム
またはブロック共重合体などのポリプロピレン系樹脂、
ポリエステル系樹脂、ポリカーボネート樹脂、ポリアミ
ド系樹脂、セルロースアセテート系樹脂あるいはこれら
の混合樹脂などを例示できる。The thermoplastic resin tape of the present invention is not particularly limited as long as it is a thermoplastic resin capable of being plastically deformed, and is appropriately selected from those which can be thermally fused to a bag material.
These thermoplastic resins include high-density polyethylene, low-density polyethylene, polyethylene-based resins such as ethylene-α-olefin copolymers, polypropylene, soft polypropylene-based resins, and random or block copolymers of propylene with other olefins. Polypropylene resin,
Examples thereof include a polyester resin, a polycarbonate resin, a polyamide resin, a cellulose acetate resin, and a mixed resin thereof.

【０００８】これら、熱可塑性樹脂には、熱可塑性エラ
ストマーなどの衝撃改良、軟質化のための他のエラスト
マーや、不飽和カルボン酸あるいはその誘導体で変性さ
れた熱可塑性樹脂などへの接着性改良樹脂、着色剤など
の各種添加剤が必要により配合される。この熱可塑性樹
脂が塑性変形するためには、その引張弾性率が、通常５
００ＭＰａ以上、好ましくは６００ＭＰａ〜１０，００
０ＭＰａの範囲である。[0008] These thermoplastic resins include other elastomers for improving impact and softening, such as thermoplastic elastomers, and resins for improving adhesion to thermoplastic resins modified with unsaturated carboxylic acids or derivatives thereof. Various additives such as a colorant and the like are blended as required. In order for the thermoplastic resin to undergo plastic deformation, its tensile modulus is usually 5
00 MPa or more, preferably 600 MPa to 10,000
The range is 0 MPa.

【０００９】図１は、本発明の熱可塑性樹脂テープの第
一実施形態の断面図を示す。図において、１は，熱可塑
性樹脂テープ、２は厚肉部、３は薄肉部をそれぞれ示
す。なお、図１（Ａ）は、厚肉部が両側に凸に形成され
た場合であり、図１（Ｂ）は厚肉部が片側にのみ凸に形
成された場合である。ここで、厚肉部２は、袋に融着さ
れた場合に、折り曲げ、巻き取りすることにより塑性変
形し、主として袋の開封端口を封止する作用をするもの
である。また、薄肉部３は袋構成のフイルムとの融着性
を良好にするためのものである。この第一実施態様は、
熱可塑性樹脂テープが均一な樹脂相からなり、たとえば
高密度ポリエチレン樹脂を異型押出成形することにより
製造される。この第一実施態様では、熱可塑性樹脂は、
開封口を閉じることと、袋構成フイルムとの融着性を合
わせもつことが必要となる。FIG. 1 is a sectional view of a first embodiment of the thermoplastic resin tape of the present invention. In the drawing, 1 indicates a thermoplastic resin tape, 2 indicates a thick portion, and 3 indicates a thin portion. FIG. 1A shows a case where the thick portion is formed to be convex on both sides, and FIG. 1B shows a case where the thick portion is formed to be convex only on one side. Here, when the thick portion 2 is fused to the bag, the thick portion 2 is plastically deformed by bending and winding, and mainly acts to seal the opening end of the bag. In addition, the thin portion 3 is for improving the adhesion to the bag-shaped film. This first embodiment,
The thermoplastic resin tape is made of a uniform resin phase, and is produced, for example, by extrusion molding a high-density polyethylene resin. In this first embodiment, the thermoplastic resin is
It is necessary that the opening of the opening is closed and that the film has a fusibility with the film constituting the bag.

【００１０】つぎに、図２は、本発明の熱可塑性樹脂テ
ープの第二実施形態の断面図を示す。図２において、１
１は熱可塑性樹脂テープ、１２は厚肉部、１３は薄肉
部、１４は芯材樹脂、１５は外層樹脂をそれぞれ示す。
なお、図２、（Ａ）、（Ｂ）は、図１の場合と同様であ
る。この第二実施態様では、芯材樹脂１４で主として、
塑性変形による袋開封端口を閉じる作用を、外層樹脂で
袋構成フイルムとの溶融接着性をそれぞれ分担して担う
ものである。ここで、本発明において、袋の開封端口を
封止する作用を有する芯材樹脂としての塑性変形可能な
熱可塑性樹脂としては、前記の通り、引張弾性率が、通
常５００ＭＰａ以上、好ましくは５００ＭＰａ〜１０，
０００ＭＰａの範囲のものが用いられる。具体的には、
密度が０．９４ｇ／ｃｍ3 以上の高密度ポリエチレンな
どを例示できる。なお、この樹脂の選定にあたっては、
袋の大きさ、用途に加えて、袋を構成するフイルム基材
の柔軟性、厚みが考慮される。FIG. 2 is a sectional view of a second embodiment of the thermoplastic resin tape of the present invention. In FIG. 2, 1
1 is a thermoplastic resin tape, 12 is a thick portion, 13 is a thin portion, 14 is a core resin, and 15 is an outer layer resin.
FIGS. 2, (A) and (B) are the same as those in FIG. In the second embodiment, the core resin 14 mainly includes
The action of closing the bag opening end due to plastic deformation is performed by sharing the melt adhesion with the film constituting the bag by the outer layer resin. Here, in the present invention, as a plastically deformable thermoplastic resin as a core material resin having an action of sealing the opening end of the bag, as described above, the tensile modulus is usually 500 MPa or more, preferably 500 MPa or more. 10,
Those having a range of 000 MPa are used. In particular,
Examples include high-density polyethylene having a density of 0.94 g / cm 3 or more. When selecting this resin,
In addition to the size and use of the bag, the flexibility and thickness of the film substrate constituting the bag are taken into consideration.

【００１１】袋の基材フイルムとの熱融着性を有する外
層を構成する熱可塑性樹脂としては、低密度ポリエチレ
ン、エチレン−α−オレフィン共重合体、エチレン−酢
酸ビニル共重合体、エチレン−（メタ）アクリル酸共重
合体、軟質ポリプロピレン系樹脂、プロピレンと他のオ
レフィンとのランダム共重合体などのポリオレフィン系
樹脂が用いられる。中でも、密度が０．８６〜０．９４
のエチレン−α−オレフィン共重合体が融点、強度の点
から好ましく用いられる。ここでα−オレフィンとして
は、ブテン−１、ヘキセン−１、オクテン−１、デセン
−１などを例示できる。The thermoplastic resin constituting the outer layer having a heat-sealing property with the base film of the bag includes low-density polyethylene, ethylene-α-olefin copolymer, ethylene-vinyl acetate copolymer, ethylene- ( Polyolefin resins such as (meth) acrylic acid copolymers, soft polypropylene resins, and random copolymers of propylene with other olefins are used. Among them, the density is 0.86-0.94
Ethylene-α-olefin copolymer is preferably used from the viewpoint of melting point and strength. Here, examples of the α-olefin include butene-1, hexene-1, octene-1, and decene-1.

【００１２】本発明の熱可塑性樹脂テープの厚肉部、薄
肉部の厚みとしては、このテープが袋に融着された袋の
大きさ、フイルムの厚み、フイルムの材質、中でも引張
弾性率などを考慮して適宜決定される。たとえば、厚肉
部の厚みは、０．１ｍｍ〜２ｍｍ、薄肉部の厚みは、
０．０１〜０．５ｍｍ程度である。同様に厚肉部の巾、
形状、凸部が片面か両面かなども任意である。また、厚
肉部の凸部の形状は、半円、半楕円、半長楕円、台形な
どがフイルムとの融着性の点で好ましい。The thickness of the thick portion and the thin portion of the thermoplastic resin tape of the present invention is determined by the size of the bag in which the tape is fused to the bag, the thickness of the film, the material of the film, especially the tensile modulus. It is appropriately determined in consideration of the above. For example, the thickness of the thick portion is 0.1 mm to 2 mm, and the thickness of the thin portion is
It is about 0.01 to 0.5 mm. Similarly, the width of the thick part,
The shape, whether the convex portion is single-sided or double-sided, etc. are also arbitrary. The shape of the convex portion of the thick portion is preferably a semicircle, a semi-ellipse, a semi-ellipse, a trapezoid, or the like from the viewpoint of the fusion property with the film.

【００１３】次に、本発明の再封止性袋について図面に
基づいて説明する。図３は本発明の再封止性袋の一実施
態様を説明のための、一部切り欠き正面図である。図４
は、図３のＸ−Ｘ断面図である。図５は、他の実施態様
のＸ−Ｘ断面図である。また、図６は、図３の再封止性
袋の開封端部を折り曲げて開口を封止した状態の説明図
である。図３、図４、図５、図６において、２２は再封
止性袋であり、２２ａと２２ｂのフイルムから構成され
ている。２３はボトムシール、２４はトップシール、２
５はサイドシール、２６は折り曲げ部をそれぞれ示す。Next, the resealable bag of the present invention will be described with reference to the drawings. FIG. 3 is a partially cutaway front view for explaining one embodiment of the resealable bag of the present invention. FIG.
FIG. 4 is a sectional view taken along line XX of FIG. 3. FIG. 5 is an XX cross-sectional view of another embodiment. FIG. 6 is an explanatory view of a state in which the opening end of the resealable bag of FIG. 3 is bent to seal the opening. In FIG. 3, FIG. 4, FIG. 5, and FIG. 6, reference numeral 22 denotes a resealable bag, which is composed of films 22a and 22b. 23 is a bottom seal, 24 is a top seal, 2
Reference numeral 5 denotes a side seal, and reference numeral 26 denotes a bent portion.

【００１４】なお、図４と図５では、熱可塑性樹脂テー
プとして好ましいところの、芯材を有する多層テープの
例を示す。なお、図４は、熱可塑性樹脂テープが袋構成
フイルム間に挟持された状態で融着されたものであり、
融着が確実に行われると言う特徴がある。また、図５
は、熱可塑性樹脂テープが、フイルム面に融着された場
合の例である。なお、図５では、袋の外面側に融着した
例であるが、意匠性を考慮して袋の内面側に融着するこ
ともできる。この場合には、開口を閉じる場合の曲げ変
形、折り込み変形が容易になる特徴がある。また、必要
により、図４と図５の融着形態を組み合わせて融着した
再封止性袋とすることもできる。FIGS. 4 and 5 show examples of a multilayer tape having a core material, which is preferable as a thermoplastic resin tape. FIG. 4 shows a state in which the thermoplastic resin tape is fused while being sandwiched between the bag-constituting films.
There is a feature that fusion is reliably performed. FIG.
Is an example of a case where a thermoplastic resin tape is fused to a film surface. Although FIG. 5 shows an example in which the bag is fused to the outer surface, the bag may be fused to the inner surface in consideration of design. In this case, there is a feature that bending deformation and folding deformation when closing the opening are facilitated. Further, if necessary, a resealable bag can be obtained by combining the fusion forms shown in FIGS.

【００１５】なお、本発明の再封止性袋では、好ましい
態様は、本発明の熱可塑性樹脂テープを融着するもので
あるが、樹脂の種類、溶着性、弾性率など、あるいは袋
構成フイルムとの関係においては必ずしも本発明の熱可
塑性樹脂テープでなくともよく、熱可塑性樹脂針状体
（熱可塑性樹脂製針金）であってもよい。針状の形状と
しは、断面円形、楕円形、長方形などである。In a preferred embodiment of the resealable bag of the present invention, the thermoplastic resin tape of the present invention is fused, but the type of resin, welding property, elastic modulus, etc., or the film constituting the bag can be used. In relation to the above, it is not always necessary to use the thermoplastic resin tape of the present invention, and it may be a thermoplastic resin needle (thermoplastic resin wire). The needle shape is a circular cross section, an elliptical shape, a rectangular shape, or the like.

【００１６】本発明の再封止性袋は、熱可塑性樹脂テー
プまたは針状体が袋の通常両側端部に融着される。一般
的な袋にあっては、この二本のテープないし針状体でこ
と足りるものであるが、袋の特性、大きさなどによって
は、袋の中央部分の片面あるいは両面に一本以上を独立
に、あるいは追加的に融着することもできる。つぎに、
本発明の再封止性袋を得るためには、熱可塑性樹脂テー
プまたは針状体をフイルムに融着する。融着の方法とし
ては、加熱シールバーによる方法に加えて、ロールによ
る連続シール方法、高周波加熱方法、超音波シールなど
熱可塑性樹脂の溶融シールに用いられる各種手段が採用
される。また、フイルムへの融着は、予め押出成形によ
り成形された、連続状の熱可塑性樹脂テープまたは針状
体を、袋を製袋するためのフイルムの所定の位置に融
着したフイルムを基材として二次的に製袋する方法。
製袋時の融着と同時に融着する方法がある。前者の場
合は、袋の中央部へ融着する場合に用いられ、通常は、
後者の方法が生産性の点から好ましく採用される。In the resealable bag of the present invention, a thermoplastic resin tape or needle-like body is usually fused to both ends of the bag. For a general bag, these two tapes or needles are sufficient, but depending on the characteristics and size of the bag, one or more of them can be independently attached to one or both sides of the central part of the bag. Alternatively, or additionally, it can be fused. Next,
In order to obtain the resealable bag of the present invention, a thermoplastic resin tape or needle is fused to a film. As a fusion method, in addition to a method using a heat sealing bar, various means used for fusion sealing of a thermoplastic resin, such as a continuous sealing method using a roll, a high-frequency heating method, and an ultrasonic seal, are employed. Further, the fusion to the film is performed by bonding a continuous thermoplastic resin tape or needle-like body, which has been formed by extrusion molding in advance, to a predetermined position of the film for making the bag. As a secondary bag making method.
There is a method of fusing simultaneously with fusing at the time of bag making. In the former case, it is used when fusing to the center of the bag.
The latter method is preferably employed from the viewpoint of productivity.

【００１７】いずれにしても、本発明の再封止性袋を得
るためには、このフイルムあるいは製袋時に熱可塑性樹
脂テープまたは針状体を融着する必要がある。このため
には、これらの連続素材は、前記したところの芯材樹脂
と外層樹脂との二層構造からなることが好ましい。なぜ
ならば、外層樹脂がフイルムへ融着する条件である、温
度、圧力条件において、芯材樹脂は溶融することなく、
厚肉部を保持し、塑性変形により開封端部開放口を封止
する効果を維持する必要があるからである。なお、この
際、連続素材を溶融することなく、挟持したフイルム同
士を融着することによっても、所定の位置に連続素材を
保持することはできるが好ましい態様とはいえない。In any case, in order to obtain the resealable bag of the present invention, it is necessary to fuse a thermoplastic resin tape or a needle-shaped body during the film or bag making. For this purpose, it is preferable that these continuous materials have a two-layer structure of the core resin and the outer resin as described above. This is because the core resin does not melt under the temperature and pressure conditions under which the outer layer resin is fused to the film.
This is because it is necessary to hold the thick portion and maintain the effect of sealing the opening at the opening end by plastic deformation. In this case, it is possible to hold the continuous material at a predetermined position by fusing the sandwiched films without melting the continuous material, but this is not a preferable embodiment.

【００１８】本発明の再封止性の袋は、各種包装に用い
られる。包装の目的によって、袋を構成するフイルムと
しては、各種フイルムの中から適宜選択される。たとえ
ば、前記したところの各種熱可塑性樹脂フイルムに加え
て、延伸ポリプロピレンフイルム、延伸ポリアミドフイ
ルム、延伸ポリエチレンテレフタレートフイルム、アル
ミニウム箔など、あるいはこれら複数からなるラミネー
トフイルム、共押出多層フイルムを例示できる。中で
も、ヒートシール層として、密度が０．８６〜０．９４
ｇ／ｃｍ3 であるエチレン−α−オレフィン共重合体か
らなる共押出多層フイルムやラミネートフイルムが熱可
塑性樹脂テープの溶融接着の点から好ましい。The resealable bag of the present invention is used for various packaging. Depending on the purpose of packaging, the film constituting the bag is appropriately selected from various films. For example, in addition to the various thermoplastic resin films described above, a stretched polypropylene film, a stretched polyamide film, a stretched polyethylene terephthalate film, an aluminum foil, or the like, or a laminate film or a co-extruded multilayer film composed of a plurality of them can be exemplified. Above all, as the heat seal layer, the density is 0.86 to 0.94.
A co-extruded multilayer film or a laminated film made of an ethylene-α-olefin copolymer having a g / cm 3 of g / cm 3 is preferable from the viewpoint of fusion bonding of a thermoplastic resin tape.

【００１９】本発明の再封止性袋２２は、開封端側から
の折り曲げ、巻き取りにより、融着された熱可塑性樹脂
テープまたは針状体が屈曲塑性変形し、その状態が保持
される。この結果、袋の容積が内容物の残存量に相当す
るように、減容した状態を保持できるとともに、再封止
できる。したがつて、内容物の封止ができ、結果とし
て、湿り、酸化などの劣化を抑制できる。In the resealable bag 22 of the present invention, the thermoplastic resin tape or the needle-like body that has been fused is bent and plastically deformed by bending and winding from the opening end side, and that state is maintained. As a result, the reduced volume state can be maintained and the reseal can be performed so that the volume of the bag corresponds to the remaining amount of the contents. Therefore, the contents can be sealed, and as a result, deterioration such as wetness and oxidation can be suppressed.

【００２０】本発明の再封止性袋は、菓子類、のり等の
食品の包装、機械部品の包装あるいは果樹園における桃
や枇杷などの虫避け袋などとして使用できる。特に、後
者の場合にあっては袋フイルムの素材樹脂として、生分
解性の熱可塑性樹脂を用いることもできる。以下、本発
明の熱可塑性樹脂テープと、このテープを用いた再封止
性袋の一例を示す。密度が０．９５０ｇ／ｃｍ3 の高密
度ポリエチレンを芯材樹脂とし、密度が０．９１０ｇ／
ｃｍ3 のエチレン−オクテン−１共重合体を外層樹脂と
して、図２（Ａ）に示すような熱可塑性樹脂テープを共
押出成形することにより得た。得られたテープを、上記
のエチレン−オクテン−１共重合体フイルムを用いた製
袋時に袋の左右両端部に挟持することにより、三方シー
ル袋を得た。この袋は、開口端から折り曲げることによ
り、折り曲げられた状態で保持再封止できた。The resealable bag of the present invention can be used as a packaging for foods such as confectionery and glue, a packaging for machine parts or a bag for avoiding insects such as peaches and loquats in orchards. In particular, in the latter case, a biodegradable thermoplastic resin can be used as the material resin of the bag film. Hereinafter, an example of the thermoplastic resin tape of the present invention and a resealable bag using the tape will be described. A high density polyethylene having a density of 0.950 g / cm 3 is used as a core resin, and a density of 0.910 g / cm 3 is used.
The resin was obtained by co-extrusion of a thermoplastic resin tape as shown in FIG. 2 (A) using a cm 3 ethylene-octene-1 copolymer as an outer layer resin. The resulting tape was sandwiched between the left and right ends of the bag at the time of bag making using the ethylene-octene-1 copolymer film to obtain a three-side sealed bag. This bag could be held and resealed in a folded state by bending it from the open end.

【００２１】[0021]

【発明の効果】熱可塑性樹脂テープまたは針状体を用い
て、袋の両側部のサイドシール部に融着することによ
り、特別の補助封止具を用いることなく袋の再封止がで
きる。この袋は、従来の金属針金を用いたものに比較し
て、安全性、衛生性にすぐれる。しかも、金属を用いな
いため、電子レンジ加熱が可能で、廃棄処理上問題がな
いばかりか、リサイクル性にすぐれ再使用による省資源
にも貢献することができる。According to the present invention, the bag can be resealed without using a special auxiliary sealing device by fusing the thermoplastic resin tape or needle-like body to the side seal portions on both sides of the bag. This bag is superior in safety and hygiene as compared with a conventional bag using metal wire. In addition, since no metal is used, microwave heating is possible, and there is no problem in disposal treatment, and excellent recyclability can contribute to resource saving by reuse.

【図面の簡単な説明】[Brief description of the drawings]

【図１】本発明の熱可塑性樹脂テープの第一実施態様の
断面図FIG. 1 is a cross-sectional view of a first embodiment of a thermoplastic resin tape of the present invention.

【図２】本発明の熱可塑性樹脂テープの第二実施態様の
断面図FIG. 2 is a sectional view of a second embodiment of the thermoplastic resin tape of the present invention.

【図３】本発明の再封止性袋の一実施態様の説明図FIG. 3 is an explanatory view of one embodiment of the resealable bag of the present invention.

【図４】図３のＸ−Ｘ断面図FIG. 4 is a sectional view taken along line XX of FIG. 3;

【図５】他の実施態様のＸ−Ｘ断面図FIG. 5 is a sectional view taken along line XX of another embodiment.

【図６】本発明の再封止性袋の開封端部を折り曲げて開
口を封止した状態の説明図FIG. 6 is an explanatory view of a state in which the opening end of the resealable bag of the present invention is bent to close the opening.

【符号の説明】[Explanation of symbols]

１、１１：熱可塑性樹脂テープ ２、１２：厚肉部 ３、１３：薄肉部 １４：芯材樹脂 １５：外層樹脂 ２２：再封止性袋 ２３：ボトムシール ２４：トップシール ２５：サイドシール ２６：折り曲げ部 1, 11: thermoplastic resin tape 2, 12: thick portion 3, 13: thin portion 14: core resin 15: outer layer resin 22: resealable bag 23: bottom seal 24: top seal 25: side seal 26 : Bending part

Claims (8)

【特許請求の範囲】[Claims] 【請求項１】 厚肉部を有する熱可塑性樹脂テープまた
は針状体をフイルムに融着してなる再封止性袋。1. A resealable bag obtained by fusing a thermoplastic resin tape or a needle having a thick portion to a film. 【請求項２】 厚肉部を有する熱可塑性樹脂テープまた
は針状体が、多層構造であり、芯材樹脂が引張弾性率が
５００ＭＰａ以上の樹脂であり、外層樹脂が、密度０．
８６〜０．９４ｇ／ｃｍ3 のエチレン−α−オレフィン
共重合体からなる請求項１記載の再封止性袋。2. The thermoplastic resin tape or needle-like body having a thick portion has a multilayer structure, the core resin is a resin having a tensile modulus of 500 MPa or more, and the outer layer resin has a density of 0.1 MPa.
The resealable bag according to claim 1, comprising an ethylene-α-olefin copolymer of 86 to 0.94 g / cm 3 . 【請求項３】 フイルムがエチレン−α−オレフィン共
重合体層を有する多層フイルムであり、該共重合体層が
袋内面である請求項１または２記載の再封止性袋。3. The resealable bag according to claim 1, wherein the film is a multilayer film having an ethylene-α-olefin copolymer layer, and the copolymer layer is an inner surface of the bag. 【請求項４】 熱可塑性樹脂テープまたは針状体をフイ
ルム間に挟持融着してなる請求項１〜３のいずれかに記
載の再封止性袋。4. The resealable bag according to claim 1, wherein a thermoplastic resin tape or a needle-like body is sandwiched and fused between the films. 【請求項５】 熱可塑性樹脂テープまたは針状体をフイ
ルム面に融着してなる請求項１〜４のいずれかに記載の
再封止性袋。４記載の袋。5. The resealable bag according to claim 1, wherein a thermoplastic resin tape or a needle-like body is fused to a film surface. 4. The bag according to 4. 【請求項６】 厚肉部を有する熱可塑性樹脂テープ。6. A thermoplastic resin tape having a thick portion. 【請求項７】 厚肉部が芯材樹脂と外層樹脂からなる多
層構造である請求項６記載の熱可塑性樹脂テープ。7. The thermoplastic resin tape according to claim 6, wherein the thick part has a multilayer structure composed of a core resin and an outer resin. 【請求項８】 芯材樹脂が引張弾性率が５００ＭＰａ以
上の樹脂であり、外層樹脂が、密度０．８６〜０．９４
ｇ／ｃｍ3 のエチレン−α−オレフィン共重合体からな
る請求項７記載の熱可塑性樹脂テープ。8. The core resin is a resin having a tensile modulus of 500 MPa or more, and the outer layer resin has a density of 0.86 to 0.94.
g / cm 3 of ethylene -α- olefin interpolymer thermoplastic resin tape according to claim 7, wherein comprising a polymer.
JP14364599A 1999-05-24 1999-05-24 Re-sealable bag Pending JP2000326996A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14364599A JP2000326996A (en) 1999-05-24 1999-05-24 Re-sealable bag

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14364599A JP2000326996A (en) 1999-05-24 1999-05-24 Re-sealable bag

Publications (1)

Publication Number Publication Date
JP2000326996A true JP2000326996A (en) 2000-11-28

Family

ID=15343609

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14364599A Pending JP2000326996A (en) 1999-05-24 1999-05-24 Re-sealable bag

Country Status (1)

Country Link
JP (1) JP2000326996A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004092030A1 (en) * 2003-04-18 2004-10-28 Kao Corporation Bag
JP2004331220A (en) * 2003-04-18 2004-11-25 Kao Corp Gusset bag
JP2011240980A (en) * 2010-05-20 2011-12-01 Sekisui Seikei Ltd Packaging bag
JP2013154903A (en) * 2012-01-30 2013-08-15 Toppan Printing Co Ltd Packaging bag
WO2016026998A1 (en) * 2014-08-21 2016-02-25 O & C Innovacion Y Desarrollo S.L. Foldable and rollable seal fastener
WO2016148953A1 (en) * 2015-03-18 2016-09-22 Kellogg Company Reclosable bag
JP2020001739A (en) * 2018-06-26 2020-01-09 福岡丸本株式会社 Packaging bag with roll-in blocking function
CN114401901A (en) * 2019-09-20 2022-04-26 出光统一科技株式会社 Belt, clip belt, container with belt and container with clip belt

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004092030A1 (en) * 2003-04-18 2004-10-28 Kao Corporation Bag
JP2004331220A (en) * 2003-04-18 2004-11-25 Kao Corp Gusset bag
US7665895B2 (en) 2003-04-18 2010-02-23 Kao Corporation Bag having a deformable member attached thereto
JP2010083588A (en) * 2003-04-18 2010-04-15 Kao Corp Gusset bag
JP4480375B2 (en) * 2003-04-18 2010-06-16 花王株式会社 Gusset bag
AU2004230395B2 (en) * 2003-04-18 2010-11-11 Kao Corporation Bag
AU2004230395B9 (en) * 2003-04-18 2011-01-27 Kao Corporation Bag
US7993256B2 (en) 2003-04-18 2011-08-09 Kao Corporation Method of attaching deformable member to a bag
JP2011240980A (en) * 2010-05-20 2011-12-01 Sekisui Seikei Ltd Packaging bag
JP2013154903A (en) * 2012-01-30 2013-08-15 Toppan Printing Co Ltd Packaging bag
WO2016026998A1 (en) * 2014-08-21 2016-02-25 O & C Innovacion Y Desarrollo S.L. Foldable and rollable seal fastener
WO2016148953A1 (en) * 2015-03-18 2016-09-22 Kellogg Company Reclosable bag
JP2020001739A (en) * 2018-06-26 2020-01-09 福岡丸本株式会社 Packaging bag with roll-in blocking function
CN114401901A (en) * 2019-09-20 2022-04-26 出光统一科技株式会社 Belt, clip belt, container with belt and container with clip belt
CN114401901B (en) * 2019-09-20 2023-09-26 出光统一科技株式会社 Band, clip band, container with band and container with clip band

Similar Documents

Publication Publication Date Title
JP4526884B2 (en) Bag with zipper tape
JP4908228B2 (en) Chuck and bag with chuck
JP4638789B2 (en) Bag with spout
US9694943B2 (en) Zipper tape with cut tape, and packaging bag provided with zipper tape with cut tape
JP2006199334A (en) Resealable bag
US20070116388A1 (en) Fastener bag and fastening device
JP4826324B2 (en) Bag with spout
JP4128089B2 (en) Shape retention tape and packaging bag
JP2000326996A (en) Re-sealable bag
US7476030B1 (en) Fastener bag and fastener device
JP2007331805A (en) Chuck and heat sterilizable bag with chuck made by using the same
JP2012148784A (en) Flexible packaging bag with resealing function
JP2011213406A (en) Partial opening cover material and method of manufacturing the same
JP3759683B2 (en) Zipper bag
JP4894317B2 (en) Bag with spout
JP4011921B2 (en) Bag with chuck tape and method for manufacturing the same
JP5332250B2 (en) Self-supporting bag with spout and its manufacturing method
JPH0329766A (en) Easily unsealable package
JP3653092B1 (en) Pillow package and manufacturing method thereof
JP3720042B1 (en) Pillow package
JP5035540B2 (en) Bag with spout
JP2002225175A (en) Lid material
JP2004359293A (en) Easily unsealable packaging bag and its manufacturing method
JP2003170946A (en) Pouch container
JP2006176196A (en) Packaging bag with zipper tape

Legal Events

Date Code Title Description
A711 Notification of change in applicant

Free format text: JAPANESE INTERMEDIATE CODE: A712

Effective date: 20041001

A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20060117

RD02 Notification of acceptance of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7422

Effective date: 20070703

RD02 Notification of acceptance of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7422

Effective date: 20070810

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20080818

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20080902

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20090203