JPH06286771A - Cushioning material and manufacture thereof - Google Patents
Cushioning material and manufacture thereofInfo
- Publication number
- JPH06286771A JPH06286771A JP5070365A JP7036593A JPH06286771A JP H06286771 A JPH06286771 A JP H06286771A JP 5070365 A JP5070365 A JP 5070365A JP 7036593 A JP7036593 A JP 7036593A JP H06286771 A JPH06286771 A JP H06286771A
- Authority
- JP
- Japan
- Prior art keywords
- water
- cushioning material
- resin
- cushioning
- coating
- 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
Links
Landscapes
- Buffer Packaging (AREA)
- Wrappers (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、発泡した緩衝材に関
し、特に、電化製品、精密機器、陶器、ガラス製品、菓
子類等の各種パッケージィングに使用される緩衝材に関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a foamed cushioning material, and more particularly to a cushioning material used for various packaging such as electric appliances, precision instruments, pottery, glass products and confectioneries.
【０００２】[0002]
【従来の技術】従来より、電化製品，精密機器，陶器，
ガラス製品，菓子類等の各種パッケージィングには、そ
の商品を運搬する場合、傷及び破損を防ぐ為に、緩衝材
が広く使用されている。この緩衝材としては、ポリエチ
レン，ポリプロピレン，ポリスチレン，ポリ塩化ビニル
デン等の発泡体が知られている。2. Description of the Related Art Conventionally, electrical appliances, precision equipment, pottery,
A cushioning material is widely used for packaging various products such as glass products and confectionery in order to prevent scratches and damages when the products are transported. Foams such as polyethylene, polypropylene, polystyrene, polyvinyldene chloride are known as the buffer material.
【０００３】このうち、ポリエチレン，ポリスチレン，
ポリ塩化ビニルデンの発泡体については、特に成型がし
易く、軽く、しかも緩衝材効果が大きいという性能を備
えているので、多岐の分野に使用されている。この様な
緩衝材は、商品が取り出された後は不要の物となるの
で、従来は焼却されるか産業廃棄物として埋められてい
た。Of these, polyethylene, polystyrene,
Foams of polyvinyldene chloride are used in various fields because they are particularly easy to mold, are lightweight, and have a great cushioning effect. Since such a cushioning material becomes unnecessary after the product is taken out, it has conventionally been incinerated or buried as industrial waste.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、近年で
は、産業廃棄物が社会的な問題となり、その中で、リサ
イクルして物を再度使おうといった動きが、いろいろな
分野で盛んになっているが、上記の様な緩衝材では、下
記の問題があり必ずしも好ましくない。However, in recent years, industrial waste has become a social problem, and in such a situation, the movement to recycle and reuse the material has become popular in various fields. However, the above-mentioned cushioning material is not always preferable because of the following problems.
【０００５】つまり、従来の、例えば発泡した樹脂から
なる緩衝材では、一度成型したものは、再生して使用す
ることは出来ないばかりか、処分する場合、燃やすと黒
炎を上げ有害なガスを発生するという問題がある。ま
た、この緩衝材を産業廃棄物として土に埋めれば、腐敗
しないため永久に残ってしまうので、環境汚染となり、
今や社会的な問題となっている。That is, in the conventional cushioning material made of, for example, foamed resin, once molded, it cannot be regenerated and used, and when it is disposed of, it burns a black flame to generate harmful gas. There is a problem that it occurs. Also, if this cushioning material is buried in the soil as industrial waste, it will remain forever because it will not rot and will cause environmental pollution.
Now it's a social problem.
【０００６】一方、上記緩衝材とは異なる種類の緩衝材
として、例えば段ボール紙を細かく粉砕したものは、成
型性に欠けるという問題がある。また、卵のケース等に
見られるパルプを接着剤で固めたパルプモールド成型品
は、緩衝性に欠けるといという問題がある。On the other hand, as a cushioning material of a type different from the above-mentioned cushioning material, for example, corrugated cardboard paper finely crushed has a problem of poor moldability. Further, a pulp mold-molded product obtained by hardening the pulp found in an egg case or the like with an adhesive has a problem that it lacks cushioning properties.
【０００７】そこで、本発明は、前記課題を解決するた
めに、即ち下記〜の目的を達成するためになされた
ものである。 成型性に優れる。 緩衝性に優れる。Therefore, the present invention has been made to solve the above problems, that is, to achieve the following objects. Excellent moldability. Excellent cushioning.
【０００８】一度成型した緩衝材を、再生してリサイ
クル出来る。 古紙として利用出来る。 燃やしても有害なガスを再生させない。 土に埋めた場合、腐敗してなくなり、環境汚染がな
い。The cushioning material once molded can be recycled for recycling. It can be used as waste paper. Does not regenerate harmful gases when burned. When buried in soil, it will not rot and will not pollute the environment.
【０００９】[0009]
【課題を解決するための手段】この目的を達成するため
の請求項１の発明は、セルロース繊維を含む発泡した緩
衝材中に、被膜が水に溶ける樹脂を含むことを特徴とす
る緩衝材を要旨とする。In order to achieve this object, the invention of claim 1 provides a cushioning material characterized in that the film contains a resin soluble in water in a foamed cushioning material containing cellulose fibers. Use as a summary.
【００１０】請求項２の発明は、上記緩衝材は、上記被
膜が水に溶ける樹脂に対して被膜が水に溶けない樹脂を
５０重量％以下含むことを特徴とする上記請求項１記載
の緩衝材を要旨とする。請求項３の発明は、セルロース
繊維の中へ、被膜が水に溶ける樹脂と発泡剤を入れ混合
したものに、熱又は電子線等によるエネルギーを与えて
発泡させること特徴とする緩衝材の製造方法を要旨とす
る。According to a second aspect of the present invention, the cushioning material contains 50% by weight or less of a resin in which the coating is insoluble in water with respect to a resin in which the coating is soluble in water. Material is the main point. The invention according to claim 3 is a method for producing a cushioning material, characterized in that a mixture of a resin having a water-soluble coating and a foaming agent is mixed in cellulose fiber, and energy is given by heat or electron beam to foam the mixture. Is the gist.
【００１１】請求項４の発明は、上記緩衝材に、上記被
膜が水に溶ける樹脂に対して被膜が水に溶けない樹脂を
５０重量％以下含有させ、熱又は電子線等によるエネル
ギーを与えて発泡させること特徴とする上記請求項３記
載の緩衝材の製造方法を要旨とする。According to a fourth aspect of the present invention, the buffer material contains 50% by weight or less of a resin in which the coating is insoluble in water with respect to a resin in which the coating is soluble in water, and energy is applied by heat or electron beams. The gist is the method for manufacturing the cushioning material according to claim 3, wherein the cushioning material is foamed.
【００１２】以下、本発明の好ましい態様について説明
する。 i）本発明で使用するセルロース繊維としては、紙を抄
造する時に用いられる針葉樹及び広葉樹から得られるパ
ルプを、水に漬けてミキサーにて水に分散させた状態の
ものが適当であるが、一般紙，古本，古新聞，広告，オ
フィイス用紙，古雑誌，段ボール等の古紙を、水に漬け
てミキサーにて水に分散させた状態のものでも良い。The preferred embodiments of the present invention will be described below. i) As the cellulose fiber used in the present invention, a pulp obtained from softwood and hardwood used for making paper is preferably immersed in water and dispersed in water with a mixer. Waste paper such as paper, used books, used newspapers, advertisements, office paper, used magazines, and cardboard may be soaked in water and dispersed in water with a mixer.
【００１３】ii）本発明において、上記材料に入れる発
泡剤としては、窒素ガス，水素ガス，低沸点炭化水素
を、ゴムラテックス，塩化ビニルデン，アクリルニトリ
ルなどの共重合物の殻壁でマイクロカプセル化した熱膨
脹性小球を用いることができる。Ii) In the present invention, as the foaming agent to be added to the above material, nitrogen gas, hydrogen gas, low boiling point hydrocarbon are microencapsulated by the shell wall of a copolymer such as rubber latex, vinyldene chloride, acrylonitrile. Heat-expandable prills can be used.
【００１４】iii）また、セルロース繊維及び発泡剤と
混合する被膜が水に溶ける樹脂としては、デンプン，カ
ゼイン，ポリビニールアルコール，デキストリンなどが
挙げられるが、被膜が水に溶ける樹脂であれば、どの様
なものでも使用出来る。 iv）また、被膜が水に溶けない樹脂としては、アクリル
樹脂，ポリエステル樹脂，エポキシ樹脂，酢酸ビニル樹
脂，塩化ビニル樹脂などを、水分散型及びエマルジョン
型にした樹脂が挙げられるが、被膜が水に溶けない樹脂
であれば、どの様なものでも使用出来る。Iii) As the water-soluble resin for the coating mixed with the cellulose fiber and the foaming agent, starch, casein, polyvinyl alcohol, dextrin, etc. may be mentioned. You can also use such things. iv) In addition, examples of the resin insoluble in water include water-dispersion type and emulsion-type resins made of acrylic resin, polyester resin, epoxy resin, vinyl acetate resin, vinyl chloride resin and the like. Any resin that does not dissolve in can be used.
【００１５】v）本発明では、緩衝材を再生する場合の
水に対する溶解性及び土に埋めた場合の腐敗する時間に
応じて、被膜が水に溶けない樹脂を、５０重量％以下の
範囲で混合することが望ましい。 vi）本発明の緩衝材は、上記のセルロース繊維を水に分
散させたものと、被膜が水に溶解する樹脂とを混合した
ものに、場合によっては、更に（被膜が水に溶解する樹
脂被膜に対して）５０重量％以下の水に溶けない樹脂を
混合したものに、発泡剤を入れ、１００℃〜２００℃に
て乾燥させることによって、発泡体を作ることができ
る。尚、発泡体を成型するには、熱風乾燥より、電子線
による加熱が好ましい。V) In the present invention, depending on the solubility in water when regenerating the cushioning material and the decay time when buried in soil, the resin in which the film is insoluble in water is in the range of 50% by weight or less. Mixing is desirable. vi) The cushioning material of the present invention is a mixture of the above-mentioned cellulose fibers dispersed in water and a resin in which the film is soluble in water, and in some cases (a resin film in which the film is soluble in water). A foam can be prepared by adding a foaming agent to a mixture of 50% by weight or less of a water-insoluble resin and drying at 100 ° C to 200 ° C. In order to mold the foam, heating with an electron beam is preferable to hot air drying.
【００１６】[0016]
【作用】本発明の緩衝材は、セルロース繊維を含む発泡
した緩衝材中に、被膜が水に溶ける樹脂を含んでいるの
で、緩衝性や成型性に優れるだけでなく、一度成型した
緩衝材を再生してリサイクルすることが可能であり、ま
た古紙としても利用することができる。また、燃やして
場合でも有害なガスが発生しないので、焼却処理が可能
であり、土に埋めれば腐敗してなくなってしまうので、
環境の汚染を防止できる。The cushioning material of the present invention is not only excellent in cushioning properties and moldability, but also has a cushioning material once molded because the coating contains a resin that dissolves in water in the foaming cushioning material containing cellulose fibers. It can be recycled and recycled, and can also be used as waste paper. In addition, since no harmful gas is generated even when burned, it can be incinerated, and if it is buried in the soil it will not rot and will disappear.
Environmental pollution can be prevented.
【００１７】尚、被膜が水に溶解しない樹脂を５０重量
％以下の範囲で含有させたものは、その含有量を適宜選
択することによって、緩衝材を再生する場合の水に対す
る溶解性や、土に埋めた場合の腐敗する時間を調節で
き、また緩衝性や成型性等も調節することが可能であ
る。In the case where the coating film contains a resin insoluble in water in the range of 50% by weight or less, the solubility in water when regenerating the cushioning material and the soil can be adjusted by appropriately selecting the content. It is possible to control the time to putrefaction when it is buried in the, and it is also possible to control the buffering property and the moldability.
【００１８】この緩衝材を製造する場合には、セルロー
ス繊維の中へ、被膜が水に溶ける樹脂と発泡剤を入れ、
場合によって被膜が水に溶けない樹脂を５０重量％以下
入れ、それらを混合したものに、熱又は電子線等による
エネルギーを与えて発泡させるだけでよいので、その製
造が容易である。In the case of producing this cushioning material, a resin in which the film is soluble in water and a foaming agent are put into cellulose fibers,
Depending on the case, it is sufficient to add 50% by weight or less of a resin whose coating film is insoluble in water and to give a mixture of them by applying energy such as heat or electron beam to foam the resin, so that the production thereof is easy.
【００１９】[0019]
【実施例】以下に、本発明の緩衝材及びその製造方法の
実施例について説明する。 （実施例１）まず、針葉樹から得たパルプをミキサーに
て水に分散させ、５０％の濃度にした。この中へ、被膜
が水に溶ける樹脂として、ポリビニルアルコールを１５
重量％入れ、更に、発泡剤（松本油脂製薬株式会社：Ｆ
−３０）を５重量％混合して攪拌した。EXAMPLES Examples of the cushioning material and the method for producing the same according to the present invention will be described below. (Example 1) First, pulp obtained from softwood was dispersed in water with a mixer to a concentration of 50%. Into this, polyvinyl alcohol was added as a resin in which the film is soluble in water.
% By weight, and a foaming agent (Matsumoto Yushi-Seiyaku Co., Ltd .: F
-30) was mixed by 5% by weight and stirred.
【００２０】次に、この混合攪拌した材料を、ガラスコ
ップの型枠に１０ｇ入れ、電子レンジにて１分間加熱処
理し、発泡させるとともに凝固させた。次いで、ガラス
コップの型枠を外し、コップの形をした４５cm3の発泡
体である本実施例の緩衝材を製造した。Next, 10 g of the mixed and stirred material was put in a glass cup mold and heat-treated in a microwave oven for 1 minute to foam and coagulate. Then, the mold of the glass cup was removed, and the cushioning material of this example, which was a 45 cm 3 foam in the shape of a cup, was manufactured.
【００２１】次に、本実施例の効果を確認するための実
験例について説明する。尚、この実験では、緩衝材の
成形性，緩衝性，リサイクル性，古紙への利用
性，燃焼性，腐敗性について調べた。 成形性 成形性については、上述した様に容易に所定形状の発泡
体が得られたので好適であった。Next, an experimental example for confirming the effect of this embodiment will be described. In this experiment, the moldability, cushioning property, recyclability, usability for waste paper, flammability, and spoilage of the cushioning material were investigated. Moldability With respect to moldability, a foam having a predetermined shape was easily obtained as described above, which was preferable.
【００２２】緩衝性 本実施例の緩衝材に、肉厚１mmの割れやすいコップを入
れ、紙器箱にて外包し、名古屋−東京間３５０kmを３往
復し、延べ１０５０kmトラック輸送して比較試験を行っ
た。比較品として、ポリスチレンの発泡体とパルプを接
着剤で固めたパルプモールド品を同時に比較した。Buffering property A buffering material of this example was filled with a fragile cup having a thickness of 1 mm, wrapped in a paper container box, and reciprocated 3 times 350 km between Nagoya and Tokyo for a total of 1050 km truck transport for a comparative test. It was As a comparative product, a polystyrene foam and a pulp molded product in which pulp was solidified with an adhesive were simultaneously compared.
【００２３】その結果、本実施例の緩衝材とポリスチレ
ンの発泡体に入れられたガラスコップは、無傷であり緩
衝性に優れていることが明かである。それに対して、パ
ルプモールド品は、ガラスコップにひび割れが生じたの
で、緩衝性に難点がある。 リサイクル性 本実施例の緩衝材を材料として用いて、再度緩衝材を製
造する再生テストを行った。As a result, it is clear that the glass cup filled with the cushioning material and the polystyrene foam of this embodiment is intact and has excellent cushioning properties. On the other hand, in the pulp-molded product, since the glass cup is cracked, the cushioning property is difficult. Recyclability Using the cushioning material of the present example as a material, a regeneration test for manufacturing the cushioning material again was performed.
【００２４】まず、水２００cc中に緩衝材４５cm3を入
れ、ミキサーにて攪拌し、水への分散テストを行った。
その結果、本実施例の緩衝材は、１分程度で完全に水に
分散した。次に、これを５０％の濃度に凝縮して、この
中に、上記と同様に、ポリビニルアルコール１５重量％
と発泡剤（松本油脂製薬株式会社：Ｆ−３０）を５重量
％混合して攪拌した。次に、この混合攪拌した材料を菱
形の型枠に入れ、電子レンジにて１分間加熱処理し、発
泡及び凝固させた。次いで、加熱処理した発泡体を型枠
から外し、前述したものと同じ品質をもつ菱形の発泡体
を得た。このことからも明らかな様に、本実施例の緩衝
材はリサイクル性に優れている。First, 45 cm 3 of cushioning material was put in 200 cc of water, stirred with a mixer, and a dispersion test in water was conducted.
As a result, the cushioning material of this example was completely dispersed in water in about 1 minute. Next, this was condensed to a concentration of 50%, in which polyvinyl alcohol 15% by weight was added in the same manner as above.
5% by weight of a foaming agent (F-30, Matsumoto Yushi-Seiyaku Co., Ltd.) were mixed and stirred. Next, this mixed and stirred material was put in a diamond-shaped mold and heat-treated in a microwave oven for 1 minute to foam and solidify. Then, the heat-treated foam was removed from the mold to obtain a rhombic foam having the same quality as described above. As is clear from this, the cushioning material of this example has excellent recyclability.
【００２５】古紙への利用性 本実施例の緩衝材を、上記再生テストと同様に２００cc
の水に分散させた状態のものを、叩解機に掛け、手抄き
抄造した結果、紙を得た。これにより、本実施例の緩衝
材は、古紙として十分使用できることが確認できた。Usability on waste paper The cushioning material of this example was treated with 200cc in the same manner as in the above-mentioned regeneration test.
The paper in the state of being dispersed in water was put into a beating machine and hand-made into paper. As a result, paper was obtained. From this, it was confirmed that the cushioning material of this example can be sufficiently used as waste paper.
【００２６】燃焼性 本実施例の緩衝材に火をつけて燃焼試験を行った。ま
た、比較品として、ポリスチレン，ポリエチレンの発泡
体を燃焼させて同時比較した。その結果、本実施例の緩
衝材は、良く燃え、完全燃焼したので、燃焼性に優れて
いる。それに対して、比較品のポリスチレン，ポリエチ
レンの発泡体は、黒い炎となり、多量のススが発生した
ので、燃焼性に難点がある。Combustibility A combustion test was conducted by setting a fire on the cushioning material of this example. As a comparative product, polystyrene and polyethylene foams were burned for simultaneous comparison. As a result, the cushioning material of the present example burned well and completely burned, and thus has excellent combustibility. On the other hand, the polystyrene and polyethylene foams of the comparative products have black flames and a large amount of soot is generated, so that the combustibility is difficult.
【００２７】腐敗性 本実施例の緩衝材を、土に埋め、腐敗テストを行った。
また、比較品として、ポリスチレンやポリエチレンの発
泡体と、段ボール紙を、同様に埋めて、比較試験を行っ
た。Spoilage The cushioning material of this example was buried in soil and tested for spoilage.
Further, as a comparative product, a polystyrene or polyethylene foam and a corrugated cardboard were similarly embedded and a comparative test was conducted.
【００２８】その結果、６ヶ月で本実施例の緩衝材と段
ボール紙は、ボロボロになり、１年で腐り原形が全く無
くなったので、腐食性に優れていることは明かである。
それに対して、ポリスチレンやポリエチレンの発泡体
は、２年経過しても元のままであったので、腐食性に難
点がある。As a result, the cushioning material and the corrugated paperboard of this example became worn out after 6 months, and completely disappeared from the original shape after one year, so that it is clear that they are excellent in corrosiveness.
On the other hand, the polystyrene or polyethylene foam remains intact even after two years, and thus has a difficulty in corrosiveness.
【００２９】（実施例２）次に、実施例２について説明
する。この実施例２は、セルロース繊維として古紙等を
用いたものである。まず、古新聞，古雑誌，段ボールの
古紙を水を入れ、ミキサーにて攪拌して、５０％の濃度
にした。この中へ、被膜が水に溶ける樹脂として、デキ
ストリンを２０重量％入れ、更に、発泡剤（松本油脂製
薬株式会社：Ｆ−８５）を５重量％混合して攪拌した。
そして、この攪拌混合した材料を型枠に入れ、更に型枠
とともに熱風乾燥機に５分間入れ、１６０℃にて加熱処
理し発泡及び凝固させて、実施例１と同様な緩衝材を得
た。(Second Embodiment) Next, a second embodiment will be described. In Example 2, used paper or the like is used as the cellulose fiber. First, old newspapers, magazines, and cardboard waste paper were filled with water and stirred with a mixer to a concentration of 50%. 20% by weight of dextrin was added as a resin in which the film was dissolved in water, and 5% by weight of a foaming agent (Matsumoto Yushi-Seiyaku Co., Ltd .: F-85) was mixed and stirred.
Then, the agitated and mixed material was put into a mold, and further put together with the mold in a hot air dryer for 5 minutes, and heat-treated at 160 ° C. for foaming and solidification to obtain the same cushioning material as in Example 1.
【００３０】この実施例２の緩衝材についても、実施例
１と同様に、成型性，緩衝性，リサイクル性，
古紙への利用性，燃焼性，腐敗性等の実験を行った
ところ、実施例１の緩衝材と同様に良好であった。 （実施例３）次に、実施例３について説明する。この実
施例３は、被膜が水に溶けない樹脂を加えたものであ
る。The cushioning material of Example 2 also has the same moldability, cushioning property, recyclability, as in Example 1.
As a result of experiments such as usability for waste paper, flammability, and spoilage, it was as good as the cushioning material of Example 1. (Third Embodiment) Next, a third embodiment will be described. In this Example 3, a coating is added with a resin insoluble in water.
【００３１】まず、広葉樹から得たパルプをミキサーに
て水に分散させ、６０％の濃度にした。この中へ、被膜
が水に溶ける樹脂として、デンプンを２０重量％入れ、
更に、被膜が水に溶けない樹脂として、アクリル樹脂を
デンプンに対して、１０重量％，３０重量％，５０重量
％の割合で各々混合して、下記表１に示す様に、本実施
例３の３種の混合液を調整した。更に、各々の混合液に
対して、発泡剤（松本油脂製薬株式会社：Ｆ−８０Ｓ）
を７重量％混合して攪拌し、次いで前記実施例１と同様
に加熱処理して、本実施例３の緩衝材を製造した。ま
た、同様に、比較例として、アクリル樹脂をデンプンに
対して６０重量％混合して、緩衝材を製造した。First, pulp obtained from hardwood was dispersed in water with a mixer to a concentration of 60%. 20% by weight of starch was added to this as a resin whose coating is soluble in water,
Further, as a resin whose coating film is insoluble in water, acrylic resin was mixed with starch at a ratio of 10% by weight, 30% by weight, and 50% by weight, respectively. A mixed solution of 3 kinds was prepared. Furthermore, for each mixed solution, a foaming agent (Matsumoto Yushi-Seiyaku Co., Ltd .: F-80S)
Was mixed with 7% by weight and stirred, and then heat-treated in the same manner as in Example 1 to manufacture the cushioning material of Example 3. Similarly, as a comparative example, a cushioning material was manufactured by mixing 60% by weight of acrylic resin with starch.
【００３２】そして、これらの緩衝材に対して、実施例
１と同様に、成型性，緩衝性，リサイクル性，
古紙への利用性，燃焼性，腐敗性等の実験を行っ
た。その結果を下記表１に示すが、○が性能が優れてい
ることを示し、×が劣っていることを示している。Then, for these cushioning materials, as in the first embodiment, moldability, cushioning property, recyclability,
We conducted experiments on usability, burnability, and spoilage of waste paper. The results are shown in Table 1 below, where ∘ indicates excellent performance and x indicates inferior performance.
【００３３】[0033]
【表１】 [Table 1]
【００３４】この表１から明かな様に、被膜が水に溶け
ない樹脂であるアクリル樹脂の混合比率が、５０重量％
以下の本実施例３のものは、実施例１と同様に優れた結
果が得られた。それに対して、被膜が水に溶けない樹脂
の混合比率が、６０重量％以上の比較例のものは、リ
サイクル性，古紙への利用性，燃焼性，腐敗性に
問題があった。As is clear from Table 1, the mixing ratio of the acrylic resin, which is a resin insoluble in water, is 50% by weight.
In the following Example 3, the same excellent results as in Example 1 were obtained. On the other hand, in the case of the comparative example in which the coating ratio of the resin insoluble in water was 60% by weight or more, there were problems in recyclability, usability for waste paper, flammability, and putrefaction.
【００３５】尚、本発明は、上記実施例に何等限定され
ず、本発明の要旨の範囲内において各種の態様で実施で
きることは勿論である。The present invention is not limited to the above-described embodiments, and it goes without saying that the present invention can be carried out in various modes within the scope of the gist of the present invention.
【００３６】[0036]
【発明の効果】以上詳述したことから明かな様に、本発
明の緩衝材は、セルロース繊維を含む発泡した緩衝材中
に、被膜が水に溶ける樹脂を含んでいるので、緩衝性や
成型性に優れるだけでなく、一度成型した緩衝材を容易
に再生してリサイクルすることができ、また古紙として
も利用することができるという顕著な特長がある。As is clear from the above description, the cushioning material of the present invention contains the resin soluble in water in the foamed cushioning material containing the cellulose fiber, so that the cushioning property and the molding property are improved. Not only is it excellent in properties, but it also has the remarkable features that the cushioning material once molded can be easily recycled and recycled, and can also be used as waste paper.
【００３７】更に、燃やして場合でも有害なガスが発生
しないので、焼却処理を行うことができ、しかも、土に
埋めれば腐敗して無くなってしまうので、環境の汚染を
防止できるという利点がある。また、被膜が水に溶解し
ない樹脂を５０重量％以下の範囲で含有させたものは、
その含有量を適宜選択することによって、緩衝材を再生
する場合の水に対する溶解性や、土に埋めた場合の腐敗
する時間を調節でき、また緩衝性や成型性等も調節する
ことができる。Further, since no harmful gas is generated even when it is burned, it can be incinerated, and if it is buried in soil, it will be decomposed and lost, so that there is an advantage that environmental pollution can be prevented. Further, the resin containing the resin insoluble in water in the range of 50% by weight or less,
By appropriately selecting the content, it is possible to adjust the solubility in water when regenerating the cushioning material, the decay time when buried in soil, and also the cushioning property and moldability.
【００３８】そして、本発明の緩衝材を製造する場合に
は、セルロース繊維の中へ、被膜が水に溶ける樹脂と発
泡剤を入れ、場合によって被膜が水に溶けない樹脂を５
０重量％以下入れ、それらを混合したものに、熱又は電
子線等によるエネルギーを与えて発泡させるだけでよい
ので、容易に製造できるという利点がある。When the cushioning material of the present invention is manufactured, a resin in which the film is soluble in water and a foaming agent are put into cellulose fibers, and a resin in which the film is insoluble in water may be added in some cases.
It is sufficient to add 0% by weight or less and to give a mixture of them by applying energy such as heat or electron beam to foam the mixture, which is advantageous in that it can be easily manufactured.
Claims (4)
に、被膜が水に溶ける樹脂を含むことを特徴とする緩衝
材。1. A cushioning material comprising a foamed cushioning material containing cellulose fibers, wherein the coating contains a water-soluble resin.
脂に対して被膜が水に溶けない樹脂を５０重量％以下含
むことを特徴とする上記請求項１記載の緩衝材。2. The cushioning material according to claim 1, wherein the cushioning material contains not more than 50% by weight of a resin in which the coating is insoluble in water with respect to a resin in which the coating is soluble in water.
る樹脂と発泡剤を入れ混合したものに、熱又は電子線等
によるエネルギーを与えて発泡させること特徴とする緩
衝材の製造方法。3. A method for producing a shock-absorbing material, characterized in that a mixture of a resin having a water-soluble coating and a foaming agent is mixed into cellulose fibers, and energy is given by heat or electron beam to foam the mixture.
脂に対して被膜が水に溶けない樹脂を５０重量％以下含
有させ、熱又は電子線等によるエネルギーを与えて発泡
させること特徴とする上記請求項３記載の緩衝材の製造
方法。4. The buffer material contains 50% by weight or less of a resin in which the coating is insoluble in water with respect to a resin in which the coating is soluble in water, and energy is given by heat or an electron beam to foam the resin. The method for producing a cushioning material according to claim 3, wherein
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5070365A JPH06286771A (en) | 1993-03-29 | 1993-03-29 | Cushioning material and manufacture thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5070365A JPH06286771A (en) | 1993-03-29 | 1993-03-29 | Cushioning material and manufacture thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06286771A true JPH06286771A (en) | 1994-10-11 |
Family
ID=13429344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5070365A Pending JPH06286771A (en) | 1993-03-29 | 1993-03-29 | Cushioning material and manufacture thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06286771A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1051564C (en) * | 1996-02-06 | 2000-04-19 | 雷鸣 | Decompositable material for package and method for producing food container |
| CN103131035A (en) * | 2011-12-05 | 2013-06-05 | 江南大学 | Environment-friendly paper fiber foaming material and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4866668A (en) * | 1971-12-17 | 1973-09-12 | ||
| JPS4892471A (en) * | 1972-03-11 | 1973-11-30 | ||
| JPH05214155A (en) * | 1991-12-26 | 1993-08-24 | Rengo Co Ltd | Biodegradable cushioning material and its production |
-
1993
- 1993-03-29 JP JP5070365A patent/JPH06286771A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4866668A (en) * | 1971-12-17 | 1973-09-12 | ||
| JPS4892471A (en) * | 1972-03-11 | 1973-11-30 | ||
| JPH05214155A (en) * | 1991-12-26 | 1993-08-24 | Rengo Co Ltd | Biodegradable cushioning material and its production |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1051564C (en) * | 1996-02-06 | 2000-04-19 | 雷鸣 | Decompositable material for package and method for producing food container |
| CN103131035A (en) * | 2011-12-05 | 2013-06-05 | 江南大学 | Environment-friendly paper fiber foaming material and preparation method thereof |
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