JP5015530B2 - Heat seal package - Google Patents

Heat seal package Download PDF

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JP5015530B2
JP5015530B2 JP2006234629A JP2006234629A JP5015530B2 JP 5015530 B2 JP5015530 B2 JP 5015530B2 JP 2006234629 A JP2006234629 A JP 2006234629A JP 2006234629 A JP2006234629 A JP 2006234629A JP 5015530 B2 JP5015530 B2 JP 5015530B2
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paper
heat
thermoplastic resin
polypropylene
strength
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JP2008007922A5 (en
JP2008007922A (en
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芳樹 遠藤
徹也 上原
綾子 廣野
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Daio Paper Corp
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Daio Paper Corp
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Priority to JP2006234629A priority Critical patent/JP5015530B2/en
Priority to KR1020087032003A priority patent/KR101335471B1/en
Priority to PCT/JP2007/060925 priority patent/WO2007139118A1/en
Publication of JP2008007922A publication Critical patent/JP2008007922A/en
Publication of JP2008007922A5 publication Critical patent/JP2008007922A5/ja
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    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21HPULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H27/00Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/10Packing paper
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D65/00Wrappers or flexible covers; Packaging materials of special type or form
    • B65D65/02Wrappers or flexible covers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D65/00Wrappers or flexible covers; Packaging materials of special type or form
    • B65D65/38Packaging materials of special type or form
    • B65D65/40Applications of laminates for particular packaging purposes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D85/00Containers, packaging elements or packages, specially adapted for particular articles or materials
    • B65D85/67Containers, packaging elements or packages, specially adapted for particular articles or materials for web or tape-like material
    • B65D85/671Containers, packaging elements or packages, specially adapted for particular articles or materials for web or tape-like material wound in flat spiral form
    • B65D85/672Containers, packaging elements or packages, specially adapted for particular articles or materials for web or tape-like material wound in flat spiral form on cores
    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21HPULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H5/00Special paper or cardboard not otherwise provided for
    • D21H5/12Special paper or cardboard not otherwise provided for characterised by the use of special fibrous materials
    • D21H5/20Special paper or cardboard not otherwise provided for characterised by the use of special fibrous materials of organic non-cellulosic fibres too short for spinning, with or without cellulose fibres
    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21HPULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/16Sizing or water-repelling agents

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wrappers (AREA)
  • Laminated Bodies (AREA)
  • Paper (AREA)
  • Packages (AREA)

Description

本発明はヒートシール包装体に関するものである。 The present invention relates to a heat seal package.

例えばトイレットペーパーロールやキッチンペーパーロールのようなロール状紙製品等は、一般的に複数個を一纏めにして消費者に対して販売されることが多い(例えば特許文献1、2参照)。
この場合、各製品は、図2や図3に示すように複数個積み重ねられた状態で、ポリエチレンフィルム等の熱可塑性樹脂フィルム10によって包装されるのが一般的である。包装形態としては、図示のようにフィルム10を包装対象物11の外形に合わせて折り曲げて包み、フィルムの重なり合う部分をヒートシールするキャラメル包装の他、ガゼット包装、ピロー包装などが採用されている。包装の外面には、必要に応じて、包装素材と同素材で形成した把手12がヒートシールにより取り付けられる。
このような熱可塑性樹脂フィルムを用いた包装材では、ヒートシール部分で破断のおそれがある、あるいはこれを避けるために厚手のフィルムを用いるとコストが嵩む等の問題もある。さらには、資源リサイクルの観点から、熱可塑性樹脂フィルムを用いることは、材料の再利用が困難であるという欠点があった。
これを解決するものとして、紙基材の片面に熱可塑性樹脂層をラミネートした包装材も提案されている(特許文献3参照)。このような包装材は、紙としての風合いを有しながら、防水性を有し、ヒートシールも可能である点で非常に好ましい包装材である。
しかしながら、この先行技術では、紙面同士をヒートシールことができず、包装形態が限定されるという問題点があった。
また、包装材の強度面から見ると、店頭などで商品を手に持った時に包装材が破れる恐れがあった。
実登第3010719号公報 特開2005−153959号公報 特開昭63−12410号公報
For example, roll paper products such as toilet paper rolls and kitchen paper rolls are generally sold to consumers in a collective manner (see, for example, Patent Documents 1 and 2).
In this case, each product is generally packaged by a thermoplastic resin film 10 such as a polyethylene film in a state where a plurality of products are stacked as shown in FIGS. As a packaging form, gusset packaging, pillow packaging, or the like is adopted in addition to caramel packaging in which the film 10 is folded and wrapped in accordance with the outer shape of the packaging object 11 as shown in the figure, and the overlapping portions of the film are heat-sealed. A handle 12 formed of the same material as the packaging material is attached to the outer surface of the packaging by heat sealing, if necessary.
In the packaging material using such a thermoplastic resin film, there is a possibility that the heat seal portion may be broken, or there is a problem that cost increases when a thick film is used to avoid this. Furthermore, from the viewpoint of resource recycling, using a thermoplastic resin film has a drawback that it is difficult to reuse the material.
As a solution to this problem, a packaging material in which a thermoplastic resin layer is laminated on one side of a paper base material has been proposed (see Patent Document 3). Such a wrapping material is a very preferable wrapping material in that it has a texture as paper and is waterproof and can be heat-sealed.
However, this prior art has a problem in that the paper surfaces cannot be heat-sealed, and the packaging form is limited.
Further, from the viewpoint of the strength of the packaging material, the packaging material may be torn when the product is held in the store.
No. 3010719 JP 2005-153959 A JP 63-12410 A

そこで、本発明の主たる課題は、紙としての風合いを有し、かつ防水性を有しながら、さらに表裏両面でヒートシール可能であり、手に持った時の破れを抑止する包装紙によりロール状紙製品を複数個一纏にして包み封止部分をヒートシールにより封止した、ヒートシール包装体を提供することにある。 Therefore, the main problem of the present invention is that it has a texture as paper and is waterproof, and can be heat-sealed on both the front and back sides, and is rolled by a wrapping paper that suppresses tearing when held in the hand. An object of the present invention is to provide a heat seal package in which a plurality of paper products are wrapped together and a sealed portion is sealed by heat sealing .

上記課題を解決した本発明は、次記のとおりである。   The present invention that has solved the above problems is as follows.

<請求項記載の発明>
ロール状紙製品が複数個一纏めにして包装紙により包まれ封止部分がヒートシールにより封止されているヒートシール包装体であって、
前記包装紙が、パルプ繊維50〜75重量%と熱可塑性樹脂繊維50〜25重量%とサイズ剤とを含み、かつ米坪が25〜55g/m2、破裂強度(JIS P 8112)が0.90〜1.95kgf/cm2である、混抄紙からなることを特徴とするヒートシール包装体。
<Invention of Claim 1 >
A heat-sealed package in which a plurality of roll-shaped paper products are bundled together and wrapped in wrapping paper, and the sealing portion is sealed by heat sealing,
The wrapping paper contains 50 to 75% by weight of pulp fibers, 50 to 25% by weight of thermoplastic resin fibers, and a sizing agent, and has a basis weight of 25 to 55 g / m 2 and a burst strength (JIS P 8112) of 0.1. A heat-sealed package comprising a mixed paper of 90 to 1.95 kgf / cm 2 .

(請求項記載の発明の作用効果)
本発明に係る包装紙は、混抄紙の片面に熱可塑性樹脂からなる防水層を積層、又は混抄紙にサイズ剤、撥水剤等を添加することにより、防水性を有し、かつ混抄した熱可塑性樹脂繊維、または片面に積層した熱可塑性樹脂層により両面ヒートシール性を有することで、紙の風合いを持ちながら従来のフィルム包装と同様の機能を有する。
紙基材の両面に熱可塑性樹脂層を積層することでも、防水性及び表裏両面におけるヒートシール性を付与できるが、その場合、紙としての風合いが損なわれたり、紙として廃棄処分できなくなったりするおそれがある。これに対して、本発明に係る包装紙は、少なくとも一方は紙の面が露出しており、紙としての風合いが損なわれるおそれもない。
特に、混抄割合を本項記載の範囲内とすることにより、防水性、ヒートシール性、破裂強度、手に持った時の破れの抑止および加工適正の全てにバランス良く優れるようになる。
本発明は係る包装紙により包装することで、実用に優れたヒートシール包装体となる。
(Operational effect of the invention of claim 1 )
The wrapping paper according to the present invention has a waterproof property by laminating a waterproof layer made of a thermoplastic resin on one side of the mixed paper, or adding a sizing agent, a water repellent, etc. to the mixed paper, and the mixed paper By having a double-sided heat-sealing property with a thermoplastic resin fiber or a thermoplastic resin layer laminated on one side, it has the same function as a conventional film packaging while having a paper texture.
Laminating a thermoplastic resin layer on both sides of a paper substrate can also provide waterproofness and heat-sealability on both sides, but in that case the texture of the paper may be impaired or it may not be disposed of as paper There is a fear. On the other hand, at least one of the wrapping papers according to the present invention has an exposed paper surface, and there is no possibility that the texture as paper is impaired.
In particular, by setting the blend ratio within the range described in this section, the water resistance, heat sealability, bursting strength, prevention of tearing when held in the hand, and processing suitability are all well-balanced.
The present invention becomes a heat seal package excellent in practical use by packaging with such wrapping paper.

<請求項項記載の発明>
前記熱可塑性樹脂繊維が、芯が融点150〜170℃のポリプロピレンであり、鞘が融点120〜140℃のポリプロピレンであり、かつ、芯と鞘の融点の温度差が25〜40℃である、芯鞘構造の複合繊維である請求項記載のヒートシール包装体。
<Invention of Claim 2 >
The thermoplastic resin fiber is a polypropylene whose core is a polypropylene having a melting point of 150 to 170 ° C., a sheath is a polypropylene having a melting point of 120 to 140 ° C., and a temperature difference between the melting points of the core and the sheath is 25 to 40 ° C. The heat-sealed package according to claim 2, which is a composite fiber having a sheath structure.

(請求項記載の発明の作用効果)
ヒートシールのために、ポリエチレン繊維との混抄紙とすること、あるいは芯がポリプロピレン、鞘が芯より融点が低いポリエチレンである芯鞘構造の複合繊維による混抄紙とすることができるが、ポリエチレン繊維を使用する場合、シール強度がかならずしも十分でない。この理由は、ポリエチレン自体の強度が低く、複合繊維を使用するとしてもバインダーとして鞘にポリエチレンを使用する限り、ポリエチレン自体の強度がそのまま発現し、シール強度が低いものとなると考えられる。
これに対し、芯がポリプロピレン、鞘が芯より融点が低いポリプロピレンである芯鞘構造の複合繊維を使用すると、ポリプロピレン自体の強度がポリエチレンの強度より高いとともに、鞘のポリプロピレンと芯のポリプロピレンとの接着強度が高いので、鞘のポリプロピレンが溶融したとしても、依然として溶融しない芯のポリプロピレンと結合(接着)している結果、全体としてシール強度が高いものとなると考えられ、実際に後述の実施例で示すように、シール強度が十分に高いものが得られる。
(Operational effect of the invention of claim 2 )
For heat sealing, it can be a mixed paper with polyethylene fiber, or it can be a mixed paper with a core-sheath composite fiber whose core is polypropylene and whose sheath has a lower melting point than the core. When used, the seal strength is not always sufficient. This is because the strength of polyethylene itself is low, and even if a composite fiber is used, as long as polyethylene is used for the sheath as a binder, the strength of the polyethylene itself appears as it is and the sealing strength is low.
On the other hand, when a core-sheath composite fiber having a polypropylene core and a polypropylene sheath whose melting point is lower than that of the core is used, the strength of the polypropylene itself is higher than that of polyethylene, and the polypropylene of the sheath and the core polypropylene are bonded. Since the strength is high, even if the polypropylene of the sheath is melted, it is thought that as a result of being bonded (adhered) to the core polypropylene that still does not melt, the overall seal strength is considered to be high. Thus, a sufficiently high seal strength can be obtained.

<請求項項記載の発明>
サイズ剤がアルキルケテンダイマーである請求項または記載のヒートシール包装体。
<Invention of Claim 3 >
The heat seal package according to claim 1 or 2 , wherein the sizing agent is an alkyl ketene dimer.

(請求項記載の発明の作用効果)
熱可塑性樹脂による防水層を包装体の内面側に設けることで、包装体に防水性を付与することができるが、開封したときラミネート紙であることが明らかに判るので紙様であるとする外観の観点から必ずしも好ましいとは言い難い。また、被包装物品としてトイレットペーパーロールなどの薄葉紙製品である場合、包装工程において、防水層に静電気などにより付着し、包装工程でのトラブルが知見された。これに対し、サイズ剤を外添塗布にて使用することで、防水層を設ける場合と同様な撥水性または防水性を付与できることが知見された。特に、アルキルケテンダイマー(AKD)は、後述の実施例で示すように、他のサイズ剤に比較して、本発明の混抄紙の配合組成において優れた撥水性または防水性に示すものとなる。
(Effects of invention of claim 3 )
By providing a waterproof layer with a thermoplastic resin on the inner surface side of the package, the package can be waterproofed. From the point of view, it is not necessarily preferable. Further, when the article to be packaged is a thin paper product such as a toilet paper roll, it has been found that the packaging layer is attached to the waterproof layer due to static electricity or the like and troubles in the packaging process are found. On the other hand, it has been found that by using a sizing agent in the external application, the same water repellency or waterproofness as in the case of providing a waterproof layer can be provided. In particular, the alkyl ketene dimer (AKD) exhibits excellent water repellency or waterproofness in the blended composition of the mixed paper of the present invention, as compared with other sizing agents, as shown in the examples described later.

以上のとおり本発明によると、要すれば、紙としての風合いを有し、かつ撥水性または防水性を示しながら、さらに表裏両面でヒートシールが可能になり、手に持った時の破れを抑止する等の利点がもたらされる。   As described above, according to the present invention, if necessary, while having a texture as paper and exhibiting water repellency or waterproofness, heat sealing can be performed on both the front and back surfaces, and tearing when held in the hand is suppressed. And the like.

以下、本発明の一実施形態について添付図面を参照しながら詳説する。
図1は、本発明に係るヒートシール可能な包装紙1の断面を示しており、この包装紙1は混抄紙層2を有し、必要によりその片面にのみ積層(ラミネート)された防水層3を有している。
Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 shows a cross section of a heat-sealable wrapping paper 1 according to the present invention. This wrapping paper 1 has a mixed paper layer 2 and, if necessary, a waterproof layer 3 laminated (laminated) only on one side thereof. have.

混抄紙層2は、パルプ繊維及び熱可塑性樹脂繊維を混抄してなるものである。パルプとしては、NUKP(針葉樹未晒しクラフトパルプ)、NBKP(針葉樹晒しクラフトパルプ)、LBKP(広葉樹晒しクラフトパルプ)、BCTMP(ブリーチケミサーモメカニカルパルプ)、TMP(サーモメカニカルパルプ)、GP(砕木パルプ)等、特に限定無く用いることができ、熱可塑性樹脂繊維としては、PE繊維、PP繊維、PET繊維、あるいはそれらの複合繊維を特に限定無く用いることができるが、芯がポリプロピレン、鞘が芯より融点が低いポリプロピレンである芯鞘構造の複合繊維であるのが望ましい。かかるPP/PP複合繊維における芯の融点としては、150〜170℃、鞘の融点としては120〜140℃程度が望ましく、かつ融点の温度差は25〜40℃あるのがヒートシール機による作業性のために望ましい。   The mixed paper layer 2 is formed by mixing pulp fibers and thermoplastic resin fibers. As pulp, NUKP (unexposed softwood kraft pulp), NBKP (softwood bleached kraft pulp), LBKP (hardwood bleached kraft pulp), BCTMP (Bleach Chemi thermomechanical pulp), TMP (thermomechanical pulp), GP (crushed wood pulp) Etc., and can be used without any particular limitation. As the thermoplastic resin fiber, PE fiber, PP fiber, PET fiber, or a composite fiber thereof can be used without particular limitation, but the core is polypropylene and the sheath is melting point than the core. It is desirable to be a composite fiber having a core-sheath structure, which is a polypropylene having a low viscosity. In such PP / PP composite fibers, the melting point of the core is preferably 150 to 170 ° C., the melting point of the sheath is preferably about 120 to 140 ° C., and the temperature difference between the melting points is 25 to 40 ° C. Desirable for.

両繊維の配合割合は適宜定めることができるが、パルプ繊維が50超〜75重量%(特に50〜65重量%)、熱可塑性樹脂繊維が50未満〜25重量%(特に50未満〜35重量%)とするのが好ましい。熱可塑性樹脂繊維の割合が少な過ぎるとヒートシール性が乏しくなり、パルプ繊維の割合が少な過ぎると紙としての風合いが乏しくなったり、廃棄する際に紙での扱いとして廃棄できない場合がある。この観点から、包装紙1(仮に防水層を含むとしても)全体としてパルプ繊維を50重量%超含むようにすると、紙としてゴミ処分できるようになるため好ましい。   The blending ratio of both fibers can be determined as appropriate. The pulp fiber is more than 50 to 75% by weight (particularly 50 to 65% by weight), and the thermoplastic resin fiber is less than 50 to 25% by weight (particularly less than 50 to 35% by weight). ) Is preferred. If the ratio of the thermoplastic resin fiber is too small, the heat sealing property is poor, and if the ratio of the pulp fiber is too small, the texture as paper may be poor, or may not be discarded as paper handling when discarded. From this point of view, it is preferable that the wrapping paper 1 (even if it includes a waterproof layer) as a whole contains more than 50% by weight of pulp fibers because it can be disposed of as paper.

必要により、混抄紙の(破裂)強度向上のためにビニロン繊維を混抄することができる。ビニロン繊維の混抄率としては、7重量%を上限とするのが望ましい。   If necessary, vinylon fibers can be mixed to improve the (rupture) strength of the mixed paper. The vinylon fiber mixing ratio is desirably 7% by weight.

熱可塑性樹脂繊維としては、繊度が0.5〜10dtex、繊維長が2〜30mmであることが望ましい。度が0.5dtex未満では接着強力が不足し、十分な紙強力が得られず、10dtexを越える場合も、単位重量当たりの繊維本数が少なくなり、接着強力が低下して、十分な紙強力が得られない。また、繊維長が2mm未満では、接着強力が不足し、30mmを越えると、水中分散性が悪化して、紙強力が低下する。繊度の更に好ましい範囲は1〜8dtex、繊維長の更に好ましい範囲は3〜20mmである。また、カット繊維ではないオレフィン系の合成パルプを用いることもできる。   The thermoplastic resin fiber desirably has a fineness of 0.5 to 10 dtex and a fiber length of 2 to 30 mm. If the degree is less than 0.5 dtex, the adhesive strength is insufficient, and sufficient paper strength cannot be obtained. If it exceeds 10 dtex, the number of fibers per unit weight decreases, the adhesive strength decreases, and sufficient paper strength is obtained. I can't get it. On the other hand, when the fiber length is less than 2 mm, the adhesive strength is insufficient, and when it exceeds 30 mm, the dispersibility in water deteriorates and the paper strength decreases. A more preferable range of the fineness is 1 to 8 dtex, and a more preferable range of the fiber length is 3 to 20 mm. Also, olefin-based synthetic pulp that is not cut fiber can be used.

熱可塑性樹脂層による防水層を設けない場合は、混抄紙にサイズ剤、撥水剤により防水性を付与するが望ましい。サイズ剤、撥水剤の種類は問わない。サイズ剤としてアルキルケテンダイマー、スチレンアクリル樹脂、ロジン等のサイズ剤、オレフィンワックス系撥水剤、フッ素系撥水剤を挙げることができるが、特にアルキルケテンダイマーが最適である。塗布量が少なくて防水・撥水性の効果が高いのはアルキルケテンダイマーやフッ素系の撥水剤であるが、フッ素系撥水剤は価格が高く、コストがかかる。サイズ剤の添加量としては、対全繊維に対し2〜10重量%であるのが望ましい。   When a waterproof layer made of a thermoplastic resin layer is not provided, it is desirable to impart waterproofness to the mixed paper with a sizing agent and a water repellent. The type of sizing agent and water repellent is not limited. Examples of the sizing agent include sizing agents such as alkyl ketene dimers, styrene acrylic resins, and rosin, olefin wax water repellents, and fluorine water repellents, and alkyl ketene dimers are particularly suitable. Alkyl ketene dimers and fluorine-based water repellents have a small application amount and high waterproof / water-repellent effects, but fluorine-based water repellents are expensive and costly. The addition amount of the sizing agent is desirably 2 to 10% by weight based on the total fibers.

サイズ剤及び又は撥水剤の添加方法としては外添塗布が好ましい。内添の場合、目標とする防水性を出すためには大量に添加しなければならず、泡立ちや、マシンの汚れ等操業上の問題があるため、外添塗布が好ましい。サイズプレス、ゲートロープレス、キャレンダー塗工、グラビア塗工など外添塗布であれば、特に限定しない。   As a method for adding the sizing agent and / or the water repellent, external coating is preferable. In the case of internal addition, it is necessary to add a large amount in order to achieve the target waterproof property, and since there are operational problems such as foaming and machine contamination, external addition is preferable. There is no particular limitation as long as it is an external additive coating such as a size press, gate row press, calendar coating, and gravure coating.

撥水剤としては、シリコーン系、アクリル系、ウレタン系、エステル系、油脂系の樹脂あるいはモノマーを溶解させたものを使用でき、より具体例としては、パラフィン系ワックス、天然ワックス等のワックスをエマルジョン化したワックスエマルジョン;ポリアミド系樹脂、ポリアミン系樹脂等の合成樹脂;ポリテトラフルオロエチレン、ポリクロロトリフルオロエチレン等のフッ素樹脂;ポリメチル水素シロキサン、ポリジメチルシロキサン等のシリコーン樹脂を挙げることができる。   As the water repellent, a silicone-based, acrylic-based, urethane-based, ester-based or oil-based resin or monomer dissolved therein can be used, and more specific examples include emulsions of waxes such as paraffin wax and natural wax. Waxed emulsions; Synthetic resins such as polyamide resins and polyamine resins; Fluorine resins such as polytetrafluoroethylene and polychlorotrifluoroethylene; and silicone resins such as polymethylhydrogensiloxane and polydimethylsiloxane.

混抄は通常の抄紙機により行うことができ、サイズ剤及び又は撥水剤は、前述のように好適には外添で添加する。混抄に際し、サイズ剤及び撥水剤のほか、必要により紙力剤、歩留まり向上剤を添加することも可能である。紙力剤、歩留まり向上剤としてはポリアクリルアミド系樹脂、ポリアミドエピクロルヒドリン樹脂、ポリエチレンイミンおよびその誘導体、ポリエチレンオキサイド、ポリアミン、ポリアミド、ポリアミドポリアミンおよびその誘導体、カチオン性および両性デンプン、酸化デンプン、カルボキシメチル化デンプン、植物ガム、ポリビニルアルコール等の有機系化合物、および硫酸バンド、アルミナゾル、コロイダルシリカ、ベントナイト等の無機系化合物等を適宜組み合わせて使用する。   Mixing can be performed with a normal paper machine, and the sizing agent and / or water repellent is preferably added by external addition as described above. In blending, in addition to the sizing agent and the water repellent, a paper strength agent and a yield improver can be added as necessary. Paper strength agents and yield improvers include polyacrylamide resins, polyamide epichlorohydrin resins, polyethyleneimine and derivatives thereof, polyethylene oxide, polyamines, polyamides, polyamide polyamines and derivatives thereof, cationic and amphoteric starches, oxidized starch, carboxymethylated starch In addition, organic compounds such as plant gum and polyvinyl alcohol, and inorganic compounds such as sulfate band, alumina sol, colloidal silica, bentonite, and the like are used in appropriate combination.

また、填料の添加も可能であり、填料としてはタルク、カオリン、焼成カオリン、クレー、ケイソウ土、重質炭酸カルシウム、炭酸マグネシウム、水酸化アルミニウム、二酸化チタン、硫酸マグネシウム、シリカ、アルミノ珪酸塩、ベントナイト等の鉱物質填料やポリスチレン粒子、尿素ホルマリン樹脂粒子等の有機合成填料等も適宜選択して併用が可能である。さらに、染料、pH調製剤、スライムコントロール剤、消泡剤、粘剤等の抄紙用添加助剤も用途に応じて適宜使用できる。   It is also possible to add fillers, such as talc, kaolin, calcined kaolin, clay, diatomaceous earth, heavy calcium carbonate, magnesium carbonate, aluminum hydroxide, titanium dioxide, magnesium sulfate, silica, aluminosilicate, bentonite. Such as mineral fillers such as polystyrene, organic synthetic fillers such as polystyrene particles and urea formalin resin particles, etc., can be appropriately selected and used in combination. In addition, paper additive additives such as dyes, pH adjusters, slime control agents, antifoaming agents, and stickers can be appropriately used depending on the application.

必要により設けられる防水層3は、PE、PP、PET等の熱可塑性樹脂からなる不透水性の層である。防水層3の材質は混抄紙層2における熱可塑性樹脂繊維と同じにするのが好ましいが、異ならしめることもできる。防水層3は不透水性であれば厚さ3tは特に限定されないが、6μm以上であるのが好ましい。望ましくは6〜20μmであるのがよい。6μm未満であると防水性が乏しくなり、20μmを超えると、防水性はあるものの包装紙を開封する際破れにくいという不具合を生じる。   The waterproof layer 3 provided if necessary is a water-impermeable layer made of a thermoplastic resin such as PE, PP, and PET. The material of the waterproof layer 3 is preferably the same as that of the thermoplastic resin fiber in the mixed paper layer 2, but may be different. As long as the waterproof layer 3 is impermeable, the thickness 3t is not particularly limited, but is preferably 6 μm or more. Desirably, it is 6-20 micrometers. When the thickness is less than 6 μm, the waterproof property is poor. When the thickness exceeds 20 μm, there is a problem that the waterproof paper is not easily torn when it is opened.

製造に際しては、上記パルプ繊維及び熱可塑性樹脂繊維を原料として混抄紙を製造した後、この混抄紙の片面にのみ熱可塑性樹脂フィルムをラミネートする等、公知の方法を採用することができる。   In production, a known method may be employed such as producing a mixed paper using the above pulp fiber and thermoplastic resin fiber as raw materials and then laminating a thermoplastic resin film only on one side of the mixed paper.

混抄紙としては、米坪が25〜55g/m2であるのが好ましい。米坪が25g/m2未満であると強度が不足し包装後の製品を持った時に破れる可能性がある。また、55g/m2より大きいと既存の熱可塑性樹脂フィルムの包装設備を利用できなかったり、利用できてもヒートシール温度を高くしたり、加工スピードを落としたりするなど操業性が悪くなる場合がある。換言すれば、米坪が低過ぎると強度が不足し、米坪が高すぎると既存の熱可塑性樹脂フィルムの包装設備を利用し難くなる。 The mixed paper is preferably 25 to 55 g / m 2 . If the weight per square meter is less than 25 g / m 2 , the strength is insufficient, and there is a possibility of tearing when holding the product after packaging. On the other hand, if it exceeds 55 g / m 2 , the existing thermoplastic resin film packaging equipment cannot be used, or even if it can be used, the operability may deteriorate, such as increasing the heat seal temperature or reducing the processing speed. is there. In other words, the strength is insufficient if the weight is too low, and it is difficult to use existing thermoplastic resin film packaging equipment if the weight is too high.

混抄紙の破裂強度(JIS P 8112)としては、0.90〜1.95kgf/cm2が望ましい。下限値は包装袋として必要な強度であり、上限値を超えると開封が困難となり、包装紙としてコスト高となる。 The burst strength (JIS P 8112) of the mixed paper is preferably 0.90 to 1.95 kgf / cm 2 . The lower limit is the strength required for a packaging bag. When the upper limit is exceeded, opening becomes difficult and the cost of packaging paper increases.

かくして構成された包装紙1においては、防水層3表面対防水層3表面、防水層3表面対混抄紙層2表面、および混抄紙層2表面対混抄紙層2表面のいずれにおいても、良好なヒートシール性が発揮される。
本発明の包装体の包装形態としては、前述のキャラメル包装、ガゼット包装、ピロー包装などを採用できる。
In the wrapping paper 1 thus configured, the waterproof layer 3 surface versus the waterproof layer 3 surface, the waterproof layer 3 surface versus the mixed paper layer 2 surface, and the mixed paper layer 2 surface versus the mixed paper layer 2 surface are all good. Heat sealability is demonstrated.
As the packaging form of the package of the present invention , the aforementioned caramel packaging, gusset packaging, pillow packaging, or the like can be employed.

表1に示す各種の包装紙を製造し、ヒートシール性、強度、防水性、撥水性および加工適正について評価した。その際に、サイズ剤添加の効果及びサイズ剤の種類の相違に基づく効果に調べた。結果を表1に示した。
使用したパルプ繊維(NUKP(針葉樹未晒しクラフトパルプ))、熱可塑性繊維(複合繊維:芯がポリプロピレン(融点165℃)、鞘もポリプロピレン(融点132℃)の芯鞘構造の複合繊維(PP/PP複合繊維))、サイズ剤及び撥水剤の具体例については、表1及び表2に記載した。
ここで、ヒートシール強度はPEフィルム包装するときのシール温度に近い170℃で行い、シール時間3秒で行った。シール強度測定の試験片幅は25mmで、テンシロンにて剥離強度を測定した。ヒートシール性については、ヒートシーラーで包装紙の紙面同士をシールし、シール部分を剥離した時、包装紙が破断してしまうものを○とし、剥がれるもの(擬似接着)、シールされないものを×とした。破裂強度(JIS P 8112)についても測定し、破裂強度が0.90kgf/cm2以上であるものを○とし、それ未満のものは×とした。なお、破裂強度の範囲としては、0.90〜1.95kgf/cm2であることが好ましい。0.90kgf/cm2未満であると、手に持った時破れが生じ易く、逆に1.95kgf/cm2を越えると、包装紙を開封する際破れにくいという不具合を生じる。また、防水性については、吸水性のある紙を包装紙の下に敷き、水性インキで着色した水を1ml滴下し、下の吸水性のある紙への水の浸透を見た。その結果、1時間以上放置しても水の浸透がないものを○とし、1時間未満に浸透があるものを×とした。防水性の他に撥水性(JAPAN TAPPI NO.68)、ヒートシール強度も測定し結果を表2に示す。撥水性についてはJAPAN TAPPI NO.68に準じて測定した。また、包装加工適性については、米坪が増加すると、包装加工する際のシール温度を高くしたり、加熱時間を長くしなければならないものを×とした。
Various wrapping papers shown in Table 1 were produced and evaluated for heat sealability, strength, waterproofness, water repellency, and processing suitability. In that case, it investigated to the effect based on the difference in the kind of size agent addition, and the effect of sizing agent addition. The results are shown in Table 1.
Pulp fibers used (NUKP (unbleached kraft pulp)), thermoplastic fibers (composite fiber: core-polypropylene (melting point 165 ° C.), sheath-polypropylene (melting point 132 ° C.) core-sheath composite fiber (PP / PP) Specific examples of the composite fiber)), sizing agent and water repellent are shown in Tables 1 and 2.
Here, the heat seal strength was 170 ° C., which is close to the seal temperature when packaging PE film, and the seal time was 3 seconds. The test piece width for measuring the seal strength was 25 mm, and the peel strength was measured with Tensilon. Regarding heat-sealability, when the paper surfaces of the wrapping paper are sealed with a heat sealer and the seal portion is peeled off, the wrapping paper breaks when it is ○, peeled off (pseudo-adhesion), and what is not sealed is × did. The burst strength (JIS P 8112) was also measured, and those having a burst strength of 0.90 kgf / cm 2 or more were marked with ◯, and those with less than that were marked with ×. The range of burst strength is preferably 0.90 to 1.95 kgf / cm 2 . If it is less than 0.90 kgf / cm 2 , it tends to be broken when it is held in the hand, and conversely if it exceeds 1.95 kgf / cm 2 , it causes a problem that it is difficult to break when opening the wrapping paper. For waterproofing, water-absorbing paper was laid under the wrapping paper, 1 ml of water colored with water-based ink was dropped, and water penetration into the water-absorbing paper was observed. As a result, the case where the water did not permeate even after standing for 1 hour or more was evaluated as ◯, and the case where the water permeated in less than 1 hour was evaluated as x. In addition to waterproofness, water repellency (JAPAN TAPPI No. 68) and heat seal strength were also measured and the results are shown in Table 2. Regarding water repellency, JAPAN TAPPI NO. It measured according to 68. In addition, regarding the suitability for packaging processing, when the rice tsubo increased, the seal temperature at the time of packaging processing was increased or the heating time was required to be x.

Figure 0005015530
Figure 0005015530

Figure 0005015530
Figure 0005015530

本発明に係る包装紙は、トイレットペーパーロール、キッチンペーパーロールのようなロール状紙製品を包装する包装紙として好適に利用できるものである。 The wrapping paper according to the present invention can be suitably used as a wrapping paper for wrapping rolled paper products such as toilet paper rolls and kitchen paper rolls.

本発明に係る包装紙の断面図である。It is sectional drawing of the wrapping paper which concerns on this invention. トイレットペーパーロール製品の斜視図である。It is a perspective view of a toilet paper roll product. 他の製品の斜視図である。It is a perspective view of other products.

1…包装紙、2…混抄紙層、3…防水層、10…熱可塑性樹脂フィルム、11…包装対象物、12…把手。   DESCRIPTION OF SYMBOLS 1 ... Wrapping paper, 2 ... Mixed paper layer, 3 ... Waterproofing layer, 10 ... Thermoplastic resin film, 11 ... Packaging object, 12 ... Handle.

Claims (3)

ロール状紙製品が複数個一纏めにして包装紙により包まれ封止部分がヒートシールにより封止されているヒートシール包装体であって、
前記包装紙が、パルプ繊維50〜75重量%と熱可塑性樹脂繊維50〜25重量%とサイズ剤とを含み、かつ米坪が25〜55g/m2、破裂強度(JIS P 8112)が0.90〜1.95kgf/cm2である、混抄紙からなることを特徴とするヒートシール包装体。
A heat-sealed package in which a plurality of roll-shaped paper products are bundled together and wrapped in wrapping paper, and the sealing portion is sealed by heat sealing,
The wrapping paper contains 50 to 75% by weight of pulp fibers, 50 to 25% by weight of thermoplastic resin fibers, and a sizing agent, and has a basis weight of 25 to 55 g / m 2 and a burst strength (JIS P 8112) of 0.1. A heat-sealed package comprising a mixed paper of 90 to 1.95 kgf / cm 2 .
前記熱可塑性樹脂繊維が、芯が融点150〜170℃のポリプロピレンであり、鞘が融点120〜140℃のポリプロピレンであり、かつ、芯と鞘の融点の温度差が25〜40℃である、芯鞘構造の複合繊維である請求項記載のヒートシール包装体。 The thermoplastic resin fiber is a polypropylene whose core is a polypropylene having a melting point of 150 to 170 ° C., a sheath is a polypropylene having a melting point of 120 to 140 ° C., and a temperature difference between the melting points of the core and the sheath is 25 to 40 ° C. heat sealed package of claim 1 wherein the composite fibers of sheath structure. サイズ剤がアルキルケテンダイマーである請求項または記載のヒートシール包装体。 The heat seal package according to claim 1 or 2 , wherein the sizing agent is an alkyl ketene dimer.
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Families Citing this family (16)

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Publication number Priority date Publication date Assignee Title
JP2012062102A (en) * 2010-09-17 2012-03-29 Fretek:Kk Device for keeping food product fresh
JP2015160321A (en) * 2014-02-26 2015-09-07 セイコーエプソン株式会社 Adhesive paper and manufacturing method of the same
JP7239364B2 (en) * 2018-04-04 2023-03-14 特種東海製紙株式会社 paper
JP2021054436A (en) * 2019-09-27 2021-04-08 日本製紙クレシア株式会社 Roll product package
JP7470501B2 (en) * 2019-09-30 2024-04-18 日本製紙クレシア株式会社 Packaging
JP7470500B2 (en) * 2019-09-30 2024-04-18 日本製紙クレシア株式会社 Packaging
JP7511359B2 (en) 2020-02-28 2024-07-05 大王製紙株式会社 Wrapping paper for lamination, laminate and packaging using same
JP2021155066A (en) * 2020-03-26 2021-10-07 大王製紙株式会社 Packaging paper and packaging body of roll paper product
JP7545815B2 (en) * 2020-04-30 2024-09-05 日本製紙クレシア株式会社 Toilet roll packaging
JP7436307B2 (en) * 2020-06-30 2024-02-21 日本製紙クレシア株式会社 Packaging for paper products
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Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61220840A (en) * 1985-03-28 1986-10-01 共同印刷株式会社 Extruded tube
JP2554252B2 (en) * 1986-11-12 1996-11-13 株式会社 興人 Breathable heat seal paper
JP3559792B2 (en) * 1998-12-04 2004-09-02 株式会社白興商会 Clothing packaging material and clothing packaging cover
JP2005112429A (en) * 2003-10-09 2005-04-28 Daio Paper Corp Food packaging sheet

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