JP2020032015A - Hybrid straw - Google Patents
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- JP2020032015A JP2020032015A JP2018162747A JP2018162747A JP2020032015A JP 2020032015 A JP2020032015 A JP 2020032015A JP 2018162747 A JP2018162747 A JP 2018162747A JP 2018162747 A JP2018162747 A JP 2018162747A JP 2020032015 A JP2020032015 A JP 2020032015A
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Abstract
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本発明は、現行プラスチック製ストローの対環境性面で不適合な部分を解消する目的より紙を主体とした飲料及び食品用ストローの供給に関する。 The present invention relates to the supply of paper-based beverage and food straws for the purpose of eliminating incompatible parts of current plastic straws in terms of environmental friendliness.
今日、生活様式の変化により使用されるプラスチックの量は膨大なものと成って居り、またプラスチック全体の中でも短時間で消費・使い捨てされるプラスチック類は社会問題化さえして居る。特にストロー等は一部の魚や、クジラの体内に多量に蓄積された様子がマスコミでセンセーショナルに伝えられ、ゴミの海洋投棄の問題よりプラスチック材のマイクロプラスチック化の観点から、周り廻って人体への影響も今日問題視されている。大手のコーヒーチェーン店や航空会社がプラスチックストロー使用禁止を発表するなども有り世界中で着目されている。対応策として金属や硝子製ストローへの移行も再検討されているが、ストローの需要の多くの分野のファーストフードショップでの用途等においてはその場で一回きりの使用で有り、リユースを促す事も含め、金属や硝子製への再移行は不向きと云える。一時期に植物由来樹脂の観点よりポリ乳酸（PLA）材のストローも検討されたが、割れやすい性質と、割れた場合鋭く尖った破片と成る特性やコスト面からも代替得品と成り得なかった。一方紙単体製ストローの検討もされているが紙ストロー自身、強度、腰の強さ、耐水性能等で不十分な性能品と云え、ストロー生産時に使用する接着剤が海外品の一部の物には、酢酸ビニール系の物が使用されており食品衛生法上の安全性に問題も有り全面的な代替品とは成りづらい現状にある。 Today, the amount of plastics used has become enormous due to changes in lifestyles, and plastics that are consumed and disposable in a short time among all plastics have even become a social problem. In particular, straws and other parts of the fish and whales accumulated in the body in large quantities are reported in a sensational manner, and due to the problem of dumping garbage into the ocean, the surroundings of the plastic material are turned around and turned into the human body. The impact is also a problem today. Some major coffee chain stores and airlines have announced the ban on the use of plastic straws. The shift to metal and glass straws is being reviewed as a countermeasure, but the use of straws in fast food shops in many areas of demand is a one-time use on the spot and encourages reuse. The transition to metal or glass, including that, is not suitable. At one point, a polylactic acid (PLA) straw was also considered from the viewpoint of plant-derived resin, but it could not be a substitute because of its fragile properties, the characteristics of sharp and sharp fragments when broken, and the cost. . On the other hand, straws made of paper alone are also being studied, but the paper straw itself is insufficient in strength, stiffness, water resistance, etc., and the adhesive used during straw production is part of overseas products. Is made of vinyl acetate, and there is a problem with the safety under the Food Sanitation Law, and it is difficult to be a full substitute.
本発明が解決しようとする課題は、従来のプラスチック製ストローの利便性、コスト面の低価格性の追求と別途の面では、環境対応面でのマイクロプラスチック化対応問題等にある。 The problem to be solved by the present invention is to pursue the convenience and the low cost of the conventional plastic straws, and the other problem is to deal with microplasticization in terms of environmental friendliness.
本発明は漂白剤未使用パルプ原紙にポリ乳酸樹脂を押し出しラミネートした２枚の基材を内外両表層に使用し、中間材に漂白剤未使用パルプ原紙を使用した、３枚からなる各基材を張り合わせた紙基材とポリ乳酸樹脂で構成された多層構造ハイブリッド基材仕様のストローでストロー表面の内外面又は内面のみ、外面のみにポリ乳酸面を有する形状となす物である。その事により、ストロー本体への水分の侵入を制御し軟化防止する構造と強度向上目的で、中間材とデンプン系等の接着剤で紙面同士が張り合わされた多層構造体からなるハイブリッドストローで問題の解決を図る。
別案として、漂白剤未使用パルプ原紙の表裏両表面にポリ乳酸樹脂を押し出し、その原紙を細幅にスリットしスパイラル状に多層に熱接着させたハイブリッドストローとする。
The present invention relates to a three-layer base material in which two base materials obtained by extruding and laminating a polylactic acid resin on pulp base paper without bleach are used for both inner and outer surface layers, and pulp base paper without bleach is used as an intermediate material. And a straw having a multilayer structure hybrid base material made of a paper base material laminated with a polylactic acid resin and having a polylactic acid surface only on the inner and outer surfaces or the inner surface of the straw surface and only on the outer surface. As a result, a hybrid straw consisting of a multi-layer structure in which the paper is laminated with an intermediate material and a starch-based adhesive for the purpose of improving the strength and controlling the intrusion of moisture into the straw body and preventing softening is a problem. Work out a solution.
Alternatively, a hybrid straw is obtained by extruding a polylactic acid resin on both the front and back surfaces of a pulp base paper without bleaching agent, slitting the base paper into narrow widths, and thermally bonding in multiple layers in a spiral shape.
本発明品は紙と紙にポリ乳酸をコートした２種類の基材を使い、スパイラル状に接着巻き上げられた多層のストロー状の紙管であり、中間層の紙単体基材と内外面の２層のポリ乳酸押し出しラミネート紙の基材裏面が紙同士と成る事により、食品用途に安全なデンプン系接着剤でより強く張り合わせる事も可能と成り、最終的なストロー状の製品は水の接する最内面と、最外面にポリ乳酸押し出しラミネート面が露出する構造体となる。本発明ストローは水分の多い飲料他の食品に使用されても、ポリ乳酸押し出しラミネート面が紙への水分の浸み込み防ぐと共に、ポリ乳酸の硬い表面性能はストローとしての適度の折り曲げ強度となる。本考案品はストローの生産性としても従来の紙管製造工程同仕様で可能と成る点から、高い加工性より、コスト品質的にも優位性が有り、当然、ゴミとしての拡散投棄を望むものではないが、もし廃棄されても紙と共に自然界で分解される生分解素材からなりマイクロプラスチック問題となる事は無いハイブリッドストローと云える。 The product of the present invention is a multi-layered straw-shaped paper tube that is spirally bonded and wound using two types of base materials obtained by coating polylactic acid on paper and paper. The backside of the base layer of polylactic acid extruded laminated paper is paper-to-paper, making it possible to adhere more strongly with a starch-based adhesive that is safe for food applications, and the final straw-shaped product comes in contact with water The structure is such that the polylactic acid extruded laminate surface is exposed on the innermost surface and the outermost surface. Even if the straw of the present invention is used for beverages with a high water content and other foods, the polylactic acid extruded laminate surface prevents moisture from penetrating into the paper, and the hard surface performance of polylactic acid has an appropriate bending strength as a straw. . The product of the present invention has the advantage that the straw can be produced with the same specifications as the conventional paper tube manufacturing process. However, if it is discarded, it can be said that it is a hybrid straw made of a biodegradable material that is degraded in the natural world together with paper and does not cause microplastic problems.
本考案の紙主体のハイブリッドストローＳは、主素材として食品安全性の面より漂白剤未使用のバージンパルプ原紙を使用する事に有る。漂白剤未使用バージンパルプ原紙を漂白剤未使用原紙１とし、その漂白剤未使用原紙の表面にポリ乳酸材を押し出しコートして出来たポリ乳酸コート原紙を２とした基材２枚、以上２種類３枚の基材を用意する。これらを適正幅にスリットして、狙いとするストローの内径と同様の太さの巻き付け加工用金属棒にまずポリ乳酸コート原紙２を、ポリ乳酸コート面Pを内側、紙面を外面にスパイラル状にデンプン系接着剤を表面に塗布しながら巻き付け１層目とする。次工程でその上から漂白剤未使用原紙１をスパイラル状にデンプン系等の接着剤でポリ乳酸コート原紙２の上面となった紙面部に張り合わせ２層目とする。更にその上から２層目漂白剤未使用原紙１の面と紙面同士が接する様に１層目と同仕様からなるポリ乳酸コート原紙２を、ポリ乳酸コート面Pを外面で、同じくデンプン系接着剤でスパイラル状に連続的に巻き付け３層目とする。以上の様な生産工程によって細い管状の紙管の外面、内面にそれぞれ表面がポリ乳酸コート面Pと成る構成で、中間層と成る漂白剤未使用原紙１を中心に原紙２・原紙１・原紙２の順で張り合わされた３層からなるスパイラル巻き上げの連続に繋がったストロー状の紙管を作り上げる。これはポリ乳酸同士やポリ乳酸面と紙面が食品用途に安全なデンプン系等の接着剤では使用に耐える強度では接着出来ない事より本考案の基材の順番の組み合わせ構成を特徴とするものとした。
別案として、漂白剤未使用原紙１の両面にポリ乳酸コートを行ったものをポリ乳酸両面コート原紙３として両面ポリ乳酸コート原紙３同士を加熱接着させながら２層又は３層の多層スパイラル巻を行い、ストローを造る方法も発明した。ポリ乳酸は１７０度から２４０度の温度域で軟化する事を活用し、ストローに加工するスパイラル巻工程に両面ポリ乳酸コート原紙Cの両面を加熱しながら張り合わせを行いストロー化させる方法を作った本発明のハイブリッドストローSとする。
The paper-based hybrid straw S of the present invention uses virgin pulp base paper without bleach as a main material from the viewpoint of food safety. Bleach-free virgin pulp base paper is referred to as bleach-free base paper 1, and two bases are defined as base sheets 2 including polylactic acid-coated base paper formed by extruding and coating a polylactic acid material on the surface of the bleach-free base paper. Three types of base materials are prepared. These are slit to an appropriate width, and the polylactic acid-coated base paper 2 is first spirally wound on a metal rod for winding processing having the same diameter as the target straw inside diameter, with the polylactic acid-coated surface P inside and the paper surface outside. The first layer is wound by applying a starch-based adhesive on the surface. In the next step, the bleach-free base paper 1 is spirally glued to the paper surface portion of the polylactic acid-coated base paper 2 with a starch-based adhesive or the like to form a second layer. Further, a polylactic acid-coated base paper 2 having the same specifications as the first layer is bonded to the surface of the base paper 1 containing no bleaching agent 1 and a starch-based adhesive, with the polylactic acid-coated surface P on the outer surface, so that the surfaces of the base paper 1 and the paper surface are in contact. The layer is continuously wound spirally with the agent to form a third layer. Through the production process as described above, the outer surface and the inner surface of the thin tubular paper tube have the polylactic acid-coated surface P, respectively, and the base paper 2, base paper 1, base paper 1 with the bleach-free base paper 1 as the intermediate layer. A straw-shaped paper tube connected to a continuous spiral winding consisting of three layers laminated in the order of 2 is made up. This is because the polylactic acid and the polylactic acid surface and paper surface cannot be bonded with a strength that can be used with a starch-based adhesive that is safe for food use, so that the combination of the order of the base materials of the present invention is characteristic. did.
Alternatively, a two-layer or three-layer multi-layer spiral winding is performed while heating and bonding the two-sided polylactic acid-coated base papers 3 to each other, with the two-sided polylactic acid-coated base papers 3 having the bleach-free base paper 1 coated with polylactic acid on both sides. We also invented a method of making straws. Utilizing the fact that polylactic acid is softened in the temperature range of 170 to 240 degrees, a spiral winding process for processing into a straw is used to make a straw by heating and bonding both sides of double-sided polylactic acid coated base paper C. It is assumed that the present invention is a hybrid straw S.
以下図面によって説明致します。
図１はハイブリッドストローSの基材断面図で、漂白剤未使用原紙１は、５〜２０ｇ／ｍ２の肉厚の対食品使用に安全な漂白剤未使用パルプ原紙を使用する。漂白剤未使用原紙１にポリ乳酸をコートしたポリ乳酸コート原紙が２−１、２−２で、漂白剤未使用原紙１を中間に上下２枚のポリ乳酸コート原紙２−１，２−２の計３枚から成り、各原紙は接着剤Ｖ−１、Ｖ−２で順に張り合わされた事を表している。ポリ乳酸コート原紙２はこの漂白剤未使用原紙１の原紙表面に別工程でポリ乳酸を１０〜５０ミクロン押し出しラミネートした物を示している。表面はポリ乳酸コートP面でこの断面図で示される様に３枚のスリットされた基材は中間層の漂白剤未使用原紙１を中間に上下に巻かれる２枚のポリ乳酸コート原紙２との３基材が互いに紙面同士でより強く張り合わされたＶ−１，Ｖ−２形態で接着巻き上げされている。ストロー内外の両表面にコートされたポリ乳酸層が共にストローの表面層と成り、強度と吸水防止性を有する構造と成ることを目的としている
This is explained below with reference to the drawings.
FIG. 1 is a cross-sectional view of a base material of a hybrid straw S, and a bleach-free base paper 1 having a thickness of 5 to 20 g / m 2 and a bleach-free base paper that is safe for use in food is used. 2-1 and 2-2 are polylactic acid-coated base papers in which bleach-free base paper 1 is coated with polylactic acid, and two upper and lower polylactic acid-coated base papers 2-1 and 2-2 with bleach-free base paper 1 in between. , Which indicates that the respective base papers were sequentially bonded with adhesives V-1 and V-2. The polylactic acid-coated base paper 2 is obtained by extruding and laminating 10 to 50 μm of polylactic acid on the base paper surface of the bleach-free base paper 1 in a separate step. The surface is a polylactic acid-coated P surface, and as shown in this cross-sectional view, three slit substrates are made of two sheets of polylactic acid-coated raw paper 2 wound up and down with a bleach-free base paper 1 of an intermediate layer in the middle. Are bonded and wound up in a V-1 and V-2 form in which the three substrates are more strongly adhered to each other on the paper surface. The polylactic acid layer coated on both the inside and outside of the straw serves as the surface layer of the straw, and is intended to have a structure with strength and water absorption prevention.
図２は本発明のハイブリッドストローＳのストロー断面図を示して居る。ハイブリッドストローＳの外層はポリ乳酸コート原紙２が使用され外面がポリ乳酸P面と成っている。中間層が漂白剤未使用原紙１で両面を各２原紙と接着剤Ｖで張り合わされている。３層目の内層もポリ乳酸コート原紙２が使用され内側にポリ乳酸P面が来る様に接着剤Ｖ−１，Ｖ−２で巻かれている。ハイブリッドストローＳは内外側共にポリ乳酸Pの押し出しラミネート面と成って居ることより、ポリ乳酸面が飲料水中に浸かっても吸水軟化を阻止する役割と成る。本発明のストローは一般飲料を使用目的で生産する物で４〜１０ｍｍ
径の製品位を目指しており、使用する各原紙は前もって長尺原反を後工程のスパイラル巻き付けに適した１０〜３０ｍｍ幅にスリットするものである。
FIG. 2 is a cross-sectional view of the straw of the hybrid straw S of the present invention. As the outer layer of the hybrid straw S, a polylactic acid-coated base paper 2 is used, and the outer surface is a polylactic acid P surface. The intermediate layer is a base paper 1 containing no bleaching agent, and is bonded on both sides to an adhesive V on both sides. The third inner layer is also made of polylactic acid-coated base paper 2 and wound with adhesives V-1 and V-2 so that the polylactic acid P surface comes inside. Since the inner and outer surfaces of the hybrid straw S are formed as extruded laminate surfaces of polylactic acid P, they serve to prevent water absorption and softening even when the polylactic acid surface is immersed in drinking water. The straw of the present invention is a product produced for the purpose of using a general beverage, and is 4 to 10 mm.
Aiming at a product grade of diameter, each base paper used is prepared by slitting a long web in advance to a width of 10 to 30 mm suitable for spiral winding in a subsequent process.
図３は別案ストロー用基材断面図で漂白剤未使用原紙１の両面にポリ乳酸をコーティングしたポリ乳酸両面コート品３を多層で接着剤の代わりにポリ乳酸コート面Ｐ同士を加熱接着しながらスパイラル巻きした物の断面を表している。 FIG. 3 is a cross-sectional view of an alternative straw base material. A polylactic acid double-sided coated product 3 in which both surfaces of bleach-free base paper 1 are coated with polylactic acid is bonded in multi-layers by heating the polylactic acid-coated surfaces P instead of the adhesive. It shows the cross section of a spirally wound object.
図4は本発明のストロー生産説明図で上記３基材を巻き付け製品化する生産場面図である。７の巻き付け用金属棒に１のポリ乳酸コート原紙Ｂを図４の４の様に内面にポリ乳酸コ―トP面が来るように巻き付け、上から漂白剤未使用原紙Ａを５の様にデンプン系の接着剤Ｖ等を使用して接着させながら巻き付ける。更に上からポリ乳酸コ―ト原紙2をポリ乳酸コ―ト面が外面に来るよう６の様に接着材を用いて巻き付けを行い３層構造のストロー状の細い長尺紙管を作る。４，５，６は共に１０〜３ｍｍ幅にスリットされた長尺ロール形状原紙である。８はこの様に巻き付けられた３層の細い長尺紙管を表している。本考案はポリ乳酸が対食品的に安全な接着剤では張り合わせ強度が出ない事よりこの様な３層構造としている方法と、別案でポリ乳酸両面コート品3のポリ乳酸面同士を１８０度から２４０度の温度域で加熱接着させる方法の両案を考案した。 FIG. 4 is an explanatory view of straw production according to the present invention, showing a production scene in which the above three base materials are wound and commercialized. 4 is wound around the metal rod for winding 7 so that the polylactic acid coat P surface comes to the inner surface as shown at 4 in FIG. It is wound while being bonded using a starch-based adhesive V or the like. Furthermore, a polylactic acid-coated base paper 2 is wound using an adhesive material such that the polylactic acid-coated surface comes to the outer surface as shown in FIG. 6 to form a straw-shaped thin long paper tube having a three-layer structure. Reference numerals 4, 5, and 6 each denote a long roll-shaped base paper slit to a width of 10 to 3 mm. Numeral 8 denotes a three-layer thin long paper tube wound in this manner. The present invention uses a three-layer structure in which polylactic acid does not have a bonding strength with a food-safe adhesive. Alternatively, the polylactic acid surface of the polylactic acid double-sided coated product 3 is 180 degrees. We have devised both methods of heating and bonding in a temperature range of 240 to 240 degrees.
本発明はゴミの海洋投棄から発生するプラスチック製使い捨て用ストローのマイクロプラスチック化を含む
環境汚染問題解決の一助と成る技術製品で、紙と生分解素材の複合体からなる本発明品は環境に優しいストローと云え、製造方法も従来技術と近く簡易で量産化も容易で用途として要求される低コスト性と共に、拡大するファーストフード業界に適した基材と云えるのではないか。
The present invention is a technical product that helps to solve environmental pollution problems, including microplasticization of plastic disposable straws generated from marine dumping of garbage.The present invention, which is a composite of paper and biodegradable materials, is environmentally friendly A straw can be said to be a base material suitable for the expanding fast food industry, as well as a simple manufacturing method similar to the prior art, easy to mass-produce, and low cost required for use.
１ 漂白剤未使用原紙
２ ポリ乳酸コート原紙
２−１ ポリ乳酸コート原紙
２−２ ポリ乳酸コート原紙
P ポリ乳酸コ―ト面
３ ポリ乳酸両面コート
Ｖ 接着剤
Ｖ−１ 接着剤-1
Ｖ−２ 接着剤-2
４ ２のスリット長尺ロール品
５ 1のスリット長尺ロール品
６ ２のスリット長尺ロール品
７ 巻き付け用金属棒
８ ３層長尺紙管
1 Base paper without bleach 2 Polylactic acid-coated base paper 2-1 Polylactic acid-coated base paper 2-2 Polylactic acid-coated base paper
P Polylactic acid coated surface 3 Polylactic acid double coated V Adhesive V-1 Adhesive-1
V-2 Adhesive-2
4 2 long slit roll product 5 1 long slit roll product 6 2 long slit roll product 7 metal rod for winding 8 3 layer long paper tube
Claims (2)
A hybrid straw extruded with a polylactic acid resin on both sides of pulp base paper without bleaching agent and heat-bonded to the base paper spirally in multiple layers.
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| JP2018162747A JP2020032015A (en) | 2018-08-31 | 2018-08-31 | Hybrid straw |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPWO2020059635A1 (en) * | 2018-09-21 | 2021-01-07 | 日本製紙株式会社 | Paper cylinder |
| CN113085272A (en) * | 2021-04-15 | 2021-07-09 | 安徽洁瑞环保科技有限公司 | Thermochromic paper straw and processing technology thereof |
| KR20220010840A (en) * | 2020-07-20 | 2022-01-27 | 주식회사 씨앤제이글로벌 | A paper straw with improved reusability and biodegradability |
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2018
- 2018-08-31 JP JP2018162747A patent/JP2020032015A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPWO2020059635A1 (en) * | 2018-09-21 | 2021-01-07 | 日本製紙株式会社 | Paper cylinder |
| KR20220010840A (en) * | 2020-07-20 | 2022-01-27 | 주식회사 씨앤제이글로벌 | A paper straw with improved reusability and biodegradability |
| KR102428174B1 (en) | 2020-07-20 | 2022-08-02 | 주식회사 씨앤제이글로벌 | A paper straw with improved reusability and biodegradability |
| CN113085272A (en) * | 2021-04-15 | 2021-07-09 | 安徽洁瑞环保科技有限公司 | Thermochromic paper straw and processing technology thereof |
| CN113085272B (en) * | 2021-04-15 | 2023-06-20 | 安徽洁瑞环保科技有限公司 | Thermochromic paper straw and processing technology thereof |
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