JPH04189740A - Food tray and case - Google Patents

Food tray and case

Info

Publication number
JPH04189740A
JPH04189740A JP2310638A JP31063890A JPH04189740A JP H04189740 A JPH04189740 A JP H04189740A JP 2310638 A JP2310638 A JP 2310638A JP 31063890 A JP31063890 A JP 31063890A JP H04189740 A JPH04189740 A JP H04189740A
Authority
JP
Japan
Prior art keywords
chitosan
fiber
fibers
water repellent
unwoven cloth
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.)
Granted
Application number
JP2310638A
Other languages
Japanese (ja)
Other versions
JP2760412B2 (en
Inventor
Masashi Nishiyama
西山 昌史
Jun Hosokawa
細川 純
Takamasa Kubo
久保 隆昌
Kazutoshi Yoshihara
一年 吉原
Mutsuo Nakagawa
睦夫 中川
Teruhiro Komatsu
輝弘 小松
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.)
Kanai Juyo Kogyo Co Ltd
National Institute of Advanced Industrial Science and Technology AIST
Original Assignee
Agency of Industrial Science and Technology
Kanai Juyo Kogyo 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 Agency of Industrial Science and Technology, Kanai Juyo Kogyo Co Ltd filed Critical Agency of Industrial Science and Technology
Priority to JP31063890A priority Critical patent/JP2760412B2/en
Publication of JPH04189740A publication Critical patent/JPH04189740A/en
Application granted granted Critical
Publication of JP2760412B2 publication Critical patent/JP2760412B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • B65D65/46Applications of disintegrable, dissolvable or edible materials
    • B65D65/466Bio- or photodegradable packaging materials
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/90Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in food processing or handling, e.g. food conservation
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W90/00Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
    • Y02W90/10Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Biological Depolymerization Polymers (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)
  • Packaging Frangible Articles (AREA)
  • Materials Applied To Surfaces To Minimize Adherence Of Mist Or Water (AREA)

Abstract

PURPOSE:To realize a tray which is light weight, strong, stable in the shape, waterproof and having biodegradability by a method wherein unwoven cloth is made from fiber connecting agent mainly composed of chitosan, and the unwoven cloth is heated and molded for contraction. CONSTITUTION:A web composed of natural, regenerated, semi-synthetic fiber or a mixture of these fibers having cellulose structure is directly treated with a fiber connecting agent which is mainly composed of salt of chitosan, or the fibers are preliminarily crossed physically. Next, unwoven cloth is obtained by using 0.5 to 1.0% aqueous chitosan salt solution obtained by solving chitosan in 0.5 to 1.0% aqueous solution of an organic acid or aqueous chitosan salt solution mixed with fine cellulose as a fiber connecting agent, adjusting the ratio of fiber 100 pts.wt. chitosan 1 to 5 pts.wt. in solid, and water repellent 1 to 10 pts.wt. attached on the fiber and then drying. Weight of the unwoven cloth must by 200g/m<2> or more, and the unwoven cloth is molded for contraction to have a fiber density of 0.2g/cm<2> or more. As the water repellent, aliphatic compound or derivative of thereof which is easy to biodegradate by bacteria in the earth is preferable.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は肉、魚、野菜、卵等の運搬、ショーケース内で
の陳列に使用される食品用トレイやケースに関するもの
である。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to food trays and cases used for transporting meat, fish, vegetables, eggs, etc. and displaying them in showcases.

〔従来の技術及びその課題〕[Conventional technology and its problems]

近年、スーパーマーケット、百貨店、小売店等の食品売
り場において、肉や魚、野菜、卵等の生鮮食品を運搬し
たり、ショーケース内に陳列する場合に、小分けされた
食品を発泡スチロール樹脂を使った受け皿状の食品用ト
レイやケースが使用されている。この食品用トレイの使
用量は膨大な数になり、その大部分は一般家庭。
In recent years, in the food departments of supermarkets, department stores, retail stores, etc., when transporting fresh foods such as meat, fish, vegetables, eggs, etc., or displaying them in showcases, containers using styrofoam resin have been used to store subdivided foods. Food trays and cases are used. The amount of food trays used is enormous, and most of them are used by ordinary households.

食品加工業者等において廃棄されてゴミとなる。It is discarded at food processing companies and becomes garbage.

この食品用トレイやケースは発泡樹脂製品の為、重量が
軽い割りには体積が大きく、埋立て地に捨てると分解し
ないので大変問題が大きい。
These food trays and cases are made of foamed resin, so they have a large volume despite their light weight, which is a big problem because they will not decompose if thrown into a landfill.

東京、大阪の大都市圏においては、都市ゴミを捨てる場
所がここ数年で無くなることが予測−ミノ され、焼却しても有害がn発生が問題となり、環境汚染
の要因となっている。
In the metropolitan areas of Tokyo and Osaka, it is predicted that there will be no place to dispose of municipal waste in the next few years, and even if incinerated, the generation of harmful substances has become a problem and a cause of environmental pollution.

食品用トレイやケースを土壌中の微生物によって短期間
に分解する製品にする事の社会的ニーズは非常に大きい
ものがある。
There is a huge social need to make food trays and cases into products that can be decomposed by microorganisms in the soil in a short period of time.

〔課題を解決するための手段〕[Means to solve the problem]

本発明は、以上の欠点に鑑みて食品用トレイやケースと
して軽く、強度があり、形状安定性で耐水性を有し、安
全で安価であり、かつ生分解性を有するトレイを提供せ
んとするものである。
In view of the above drawbacks, the present invention aims to provide a food tray or case that is light, strong, stable in shape, water resistant, safe, inexpensive, and biodegradable. It is something.

即ち、本発明は綿又はレーヨン等のセルロース構造体か
ら構成されている繊維をウェブ状となし、これらの繊維
にキトサンを主体とする繊維間結合剤により土壌中にお
いて微生物で分解される不織布を構成して、これを加熱
、圧縮成型する事によって前記課題を解決したものであ
る。
That is, the present invention forms a web of fibers made of a cellulose structure such as cotton or rayon, and uses an interfiber binder mainly composed of chitosan to form a nonwoven fabric that is decomposed by microorganisms in soil. The above problem was solved by heating and compression molding the product.

本発明に使用される繊維は、セルロース構造体を有する
綿、麻等の天然繊維又はビスコースレーヨン、銅アンモ
ニアレーヨン等の再生繊維或はアセテート等の半合成繊
維であれば何れでも目的を達成することが可能であり、
又、これらの混合繊維を用いてもよい。
The fibers used in the present invention can achieve the purpose as long as they are natural fibers such as cotton and hemp having a cellulose structure, recycled fibers such as viscose rayon and copper ammonia rayon, or semi-synthetic fibers such as acetate. It is possible to
Moreover, you may use these mixed fibers.

上記の繊維を用いる不織布の形成は、公知のウェブ形成
機を使用し構成するパラレルウェブ又はクロスウェブ又
はランダムウェブの何れでもよく、これらのウェブに直
接キトサン塩を主体とする繊維間結合剤で処理するか、
又はこれらのウェブをニードルパンチ加工又はウォータ
ーニードルパンチ加工を施し、予め繊維を物理的に交絡
してもよい。
The above-mentioned fibers can be used to form a nonwoven fabric using a known web forming machine to form a parallel web, a cross web, or a random web, and these webs can be directly treated with an interfiber binder mainly composed of chitosan salt. Or,
Alternatively, these webs may be subjected to needle punching or water needle punching to physically entangle the fibers in advance.

次に、該交絡ウェブは、酢酸又はクエン酸の如き有機酸
の0.5〜1.0%水溶液中にキトサンを0.5〜1:
0%濃度となるように溶解したキトサン塩水溶液又は該
キトサン塩水溶液に微細セルロースを混合したキトサン
塩水溶液を繊維間結合剤として浸漬法またはスプレー法
等で繊維100重量部(固形分)に対し、キトサン1〜
5重量部(固形分)、撥水剤が1−1n重量部(固形分
)の付着量に調節後乾燥し、不織布を形成する。撥水剤
が1重量部以下の場合には吸水して簡単に型崩れをおこ
すので好ましくな(、又、10重量部をこえると生分解
時期が必要以上に長引くことになる。
The entangled web is then prepared with 0.5-1% chitosan in a 0.5-1.0% aqueous solution of an organic acid such as acetic acid or citric acid.
For 100 parts by weight (solid content) of fibers, use an aqueous chitosan salt solution dissolved to a 0% concentration or a chitosan salt aqueous solution prepared by mixing fine cellulose with the aqueous chitosan salt solution as an interfiber binder by dipping or spraying. Chitosan 1~
After adjusting the adhesion amount to 5 parts by weight (solid content) and 1 to 1 n parts by weight (solid content) of the water repellent, it is dried to form a nonwoven fabric. If the amount of water repellent is less than 1 part by weight, it is not preferable because it absorbs water and easily loses its shape (and if it exceeds 10 parts by weight, the biodegradation period will be longer than necessary).

又、不織布の目付は200g/d以上が必要であり、2
00g/J未満とした場合は保型に必要とされる十分な
強度が得られない。
In addition, the basis weight of the nonwoven fabric must be 200 g/d or more, and 2
If it is less than 00 g/J, sufficient strength required for shape retention cannot be obtained.

このようにして形成された撥水剤処理生分解性不織布の
成型方法としては、プレス機による熱圧縮成型が有効で
あり、圧縮成型により繊維密度を0.2g/a1以上に
する。0.2g/cd未満になると撥水剤の効果が十分
に発揮されず、セルロース繊維が吸水性の為に簡単に型
崩れをおこし、強度も不十分となる。
As a molding method for the water repellent-treated biodegradable nonwoven fabric thus formed, thermal compression molding using a press is effective, and the fiber density is made to be 0.2 g/a1 or more by compression molding. If it is less than 0.2 g/cd, the effect of the water repellent will not be sufficiently exhibited, the cellulose fibers will easily lose their shape due to their water absorption, and the strength will be insufficient.

また、キトサンの塩水溶液は乾燥すると固化することは
知られているが、この固化物はキトサン塩であるために
アルカリ固定しなければ水中で膨潤し、さらには溶解し
てしまう。しかし、セルロースと共に加熱乾燥すればセ
ルロースとの反応が生じ、水中でも溶解することはない
Furthermore, it is known that an aqueous salt solution of chitosan solidifies when dried, but since this solidified product is a chitosan salt, it will swell in water and even dissolve if it is not fixed with an alkali. However, if it is heated and dried together with cellulose, it will react with the cellulose and will not dissolve even in water.

更に、パルプを叩解等して成る直径11m以下の微細セ
ルロース繊維をキトサン塩水溶液中に混入せしめること
で耐水強度を向上できる。
Furthermore, the water resistance strength can be improved by mixing fine cellulose fibers with a diameter of 11 m or less, which are obtained by beating pulp or the like, into the aqueous chitosan salt solution.

又、食品用トレイとしては魚汁、肉汁等の蛋白汁を吸収
しない様に処理する撥水加工が必要であり、撥水剤とし
ては土壌中の微生物で生分解され易いとされる炭素原子
が一列に鎖状に繋がった構造を持つ脂肪族化合物及び脂
肪族化合物の誘導体の撥水剤が好ましい。
In addition, food trays must be treated with water repellent treatment to prevent them from absorbing protein juices such as fish juice and meat juice, and the water repellent is made from carbon atoms, which are said to be easily biodegradable by microorganisms in the soil. Water repellents of aliphatic compounds and derivatives of aliphatic compounds having a structure connected in a straight chain are preferred.

具体的にはN−オフタデシールエチレン尿素。Specifically, N-ophtadecyl ethylene urea.

ステアリン酸クロライド、アルキルケテンダイマー、脂
肪酸の第4級アンモニウム塩、ステアリン酸アミド、2
−エチルへキシルジルコネート等が用いられる。
Stearic acid chloride, alkyl ketene dimer, quaternary ammonium salt of fatty acid, stearic acid amide, 2
-Ethylhexylzirconate and the like are used.

〔作 用〕 本発明による食品用トレイは第1図及び第2図に示す構
成とすることにより、食品の収納容器として十分なる実
用強度を有し、撥水効果に優れており、軽く取扱い容易
であり、プラスチック容器の如く折り曲げても破損せず
、用済後は産業廃棄物として埋め立て地で土中で短期間
に分解消滅し、環境汚染から解放される。
[Function] By having the structure shown in FIGS. 1 and 2, the food tray according to the present invention has sufficient practical strength as a food storage container, has excellent water repellency, and is light and easy to handle. It does not break when bent like a plastic container, and after its use, it decomposes in the soil as industrial waste in a short period of time, freeing it from environmental pollution.

以下、本発明の一実施例を説明する。An embodiment of the present invention will be described below.

〔実施例〕〔Example〕

第1図に示す様に■二は本発明に用いる生分解性不織布
の構成断面図であり、該不織布はレーヨン繊維(2)2
dX38mをセルロース系繊維として使用し、ウェブ形
成機により形成した、例えば目付が350g/nfのク
ロスウェブ(3)を用いる。
As shown in FIG.
A cross web (3) with a basis weight of 350 g/nf, for example, is used, which is formed using a web forming machine using dX38m as a cellulose fiber.

このウェブはニードルパンチ機にかけて、100P/c
iのニードルパンチング処理を施すことにより、繊維間
相互が交絡し、仮止めされたニードルパンチウェブを形
成する。(4)はニードルパンチ後の繊維交絡状態を示
す。
This web is passed through a needle punch machine at 100P/c.
By performing the needle punching treatment of i, the fibers are intertwined with each other to form a temporarily fixed needle punched web. (4) shows the state of fiber entanglement after needle punching.

このようにして形成された仮止めニードルパンチウェブ
は、キトサン 乳酸=I:](重量比)で濃度1%のキ
トサン塩水溶液を調整し、下記に示す配合よりなる微細
セルロース、撥水剤を含有する配合液に浸漬加工した後
、熱風乾燥機中で100°CX5m1n乾燥処理を行な
い、繊維間をキトサン塩(5)で固着した分解性不織布
を構成する。
The temporarily fixed needle punch web thus formed is prepared by preparing an aqueous solution of chitosan salt with a concentration of 1% using chitosan lactic acid = I:] (weight ratio), and containing fine cellulose and a water repellent having the composition shown below. After being immersed in the mixed solution, it was dried in a hot air dryer at 100° C.

(配 合)        (重量部)1%キトサン塩
水溶液    100部(共和油脂 フコ−ナックC) 微細セルロース繊維      43部(ダイセル M
FC−100) 撥水剤 (オフタデノールエチレン尿素)    1.
25  部保土谷化学  オフテックスEM40  %
この不織布にはキトサンが固形分で7.0g//、撥水
剤が固形分で3.5g#が繊維に付着し、目付が361
g#、厚みが1.2皿であった。この不織布を熱圧縮成
型機を使って熱圧縮した。
(Blend) (Parts by weight) 1% chitosan salt aqueous solution 100 parts (Kyowa Yushi Fuconac C) Fine cellulose fiber 43 parts (Daicel M
FC-100) Water repellent (oftadenol ethylene urea) 1.
25 Department Hodogaya Chemical Oftex EM40%
This nonwoven fabric has a solid content of 7.0 g of chitosan and a solid content of 3.5 g of water repellent attached to the fibers, and has a basis weight of 361.
g#, thickness was 1.2 plates. This nonwoven fabric was thermally compressed using a thermal compression molding machine.

凹金型と凸金型の間に上記の不織布を挾み圧力を約5ト
ン加え、金型を100°Cに加熱して圧縮時間を30秒
間として縦20cmX横11国×深さ10口1重さ7.
5g、不織布密度0.27g/cJの受け皿状の食品用
トレイを得た。第2図はこの様にして成型された食品用
トレイ(6)の斜視図であり、緻密で保型性にすぐれた
容器が形成される。
The above nonwoven fabric was sandwiched between a concave mold and a convex mold, and about 5 tons of pressure was applied, and the mold was heated to 100°C and compression time was set for 30 seconds. Weight 7.
A saucer-shaped food tray with a weight of 5g and a nonwoven fabric density of 0.27g/cJ was obtained. FIG. 2 is a perspective view of the food tray (6) molded in this manner, and a dense container with excellent shape retention is formed.

この生分解性の食品用トレイを土壌中に埋めておくと約
2.2ケ月で完全に分解し消失した。
When this biodegradable food tray was buried in soil, it completely decomposed and disappeared in about 2.2 months.

尚、トレイの形状1寸法は上記実施例に限定されるもの
ではなく、成型金型の変更により所望の形状9寸法のも
のを得ることができる。
Incidentally, the shape and dimension of the tray is not limited to the above embodiment, and a desired shape and dimension of nine dimensions can be obtained by changing the molding die.

また第3図は本発明の他の実施例を示し、上記実施例と
同様にして形成した仮止めニードルパンチウェブに同様
にして撥水剤及び微細セルロース繊維含有キトサン塩水
溶液を繊維間結合剤として接着し、キトサン15g/I
Il、撥水剤が8g/ffl繊維に付着した厚さ約2.
0画目付523g/dの分解性不織布を使用して、所望
個数の小容器(7)が凸凹状態で隣接し、連続して形成
された上下一対の凹凸容器を熱圧縮成型機を使って金型
により圧力10トン、100°Cで30秒間熱成型を行
ない、小容器が数個連結した即用のケース」Yを形成し
た。尚、上記実施例に限定されるものではなく、金型の
変更により種々の形状の食品用ケースを成型により形成
することができる。
FIG. 3 shows another embodiment of the present invention, in which a water repellent and an aqueous chitosan salt solution containing fine cellulose fibers were applied as an interfiber binder to a temporarily fixed needle punched web formed in the same manner as in the above embodiment. Glue and chitosan 15g/I
Il, thickness of about 2.0 g with water repellent attached to 8 g/ffl fibers.
Using a degradable non-woven fabric with a weight of 523 g/d, a desired number of small containers (7) are adjacent to each other in an uneven state, and a pair of upper and lower uneven containers are molded using a heat compression molding machine. Heat molding was carried out using a mold at 10 tons of pressure and 100°C for 30 seconds to form a ready-to-use case "Y" in which several small containers were connected. It should be noted that the present invention is not limited to the above embodiments, and food cases of various shapes can be formed by molding by changing the mold.

〔発明の効果〕〔Effect of the invention〕

本発明は上記の如くキトサンを繊維間結合剤に使用して
いるので土壌中の微生物によってセルロース繊維が分解
を促進され、短期間で完全に分解され、土壌中の微生物
の活動を阻害する事もない。又、このトレイは食品を乗
せても十分な強度を持ち、肉汁、魚汁等の水分の吸水が
妨げられ撥水性に優れている。
As described above, the present invention uses chitosan as an interfiber binder, so the cellulose fibers are promoted to decompose by microorganisms in the soil, and are completely decomposed in a short period of time, which also inhibits the activity of microorganisms in the soil. do not have. In addition, this tray has sufficient strength even when food is placed on it, and has excellent water repellency because it prevents the absorption of water such as meat juice and fish juice.

この生分解性のトレイは肉、魚、野菜等の生鮮食品の流
通において非常に有用であり、又、一般消費者や食品加
工業者が出すゴミ廃棄物が、埋立て地で短期間に分解さ
れて肥料となり、都市ゴミの軽減に役立ち、環境汚染か
ら解放される等の種々の効果を有する発明である。
These biodegradable trays are extremely useful in the distribution of fresh foods such as meat, fish, and vegetables, and also allow the garbage generated by general consumers and food processing companies to decompose in a short period of time in landfills. This invention has various effects such as being used as fertilizer, helping to reduce municipal waste, and freeing the environment from pollution.

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

第1図は本発明に用いる生分解性不織布の概略構成断面
図、第2図は本発明の一実施例を示す食品用トレイの斜
視図、第3図は同地の実施例を示す即用ケースの斜視図
である。 ■L・・・・・・・・・ 生分解性不織布(2)・・・
・・・・・・ レーヨン繊維(3)・・・・・・・・・
 クロスウェブ(4)・・・・・・・・・ 繊維交絡状
態(5)・・・・・・・・・ キトサン塩(6)・・・
・・・・・−食品用トレイ(7)・・・・・・・・ 小
容器 」と−−−−−−−卵用ケース 第1図 手続補正書(放) 平成3年2月19日
Fig. 1 is a schematic cross-sectional view of the biodegradable nonwoven fabric used in the present invention, Fig. 2 is a perspective view of a food tray showing an embodiment of the present invention, and Fig. 3 is a ready-to-use drawing showing an embodiment of the same. It is a perspective view of a case. ■L... Biodegradable nonwoven fabric (2)...
・・・・・・ Rayon fiber (3)・・・・・・・・・
Cross web (4)...Fiber entangled state (5)...Chitosan salt (6)...
... Food tray (7)...Small container" and egg case Figure 1 procedural amendment (released) February 19, 1991

Claims (3)

【特許請求の範囲】[Claims] (1)セルロース系の天然繊維又はセルロース系の再生
又は半合成繊維或いはこれらの混合繊維より構成する繊
維ウェブが、キトサン塩を主体とする繊維間結合剤で接
着され、該繊維100重量部に対して撥水剤を固形分で
1〜10重量部付着させた目付20Og/m^2以上の
生分解性不織布よりなり、みかけ密度0.2g/cm^
2以上に圧縮成型された受け皿状に形成してなることを
特徴とする食品用トレイ。
(1) A fiber web composed of cellulose-based natural fibers, cellulose-based regenerated or semi-synthetic fibers, or mixed fibers thereof is bonded with an interfiber binder mainly composed of chitosan salt, and It is made of biodegradable nonwoven fabric with a basis weight of 20 Og/m^2 or more and has an apparent density of 0.2 g/cm^ to which 1 to 10 parts by weight of solid water repellent is attached.
A food tray characterized in that it is formed into the shape of a saucer which is compression molded into two or more parts.
(2)撥水剤が脂肪族化合物又は脂肪族化合物誘導体で
ある請求項1記載の食品用トレイ。
(2) The food tray according to claim 1, wherein the water repellent is an aliphatic compound or an aliphatic compound derivative.
(3)請求項1記載の生分解性不織布を圧縮成型して得
られる複数個の小容器が凸凹状態で連続して構成された
上下一対の容器からなることを特徴とする食品用ケース
(3) A food case comprising a pair of upper and lower containers in which a plurality of small containers obtained by compression molding the biodegradable nonwoven fabric according to claim 1 are successively arranged in an uneven manner.
JP31063890A 1990-11-15 1990-11-15 Food trays and cases Expired - Fee Related JP2760412B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP31063890A JP2760412B2 (en) 1990-11-15 1990-11-15 Food trays and cases

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP31063890A JP2760412B2 (en) 1990-11-15 1990-11-15 Food trays and cases

Publications (2)

Publication Number Publication Date
JPH04189740A true JPH04189740A (en) 1992-07-08
JP2760412B2 JP2760412B2 (en) 1998-05-28

Family

ID=18007665

Family Applications (1)

Application Number Title Priority Date Filing Date
JP31063890A Expired - Fee Related JP2760412B2 (en) 1990-11-15 1990-11-15 Food trays and cases

Country Status (1)

Country Link
JP (1) JP2760412B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001114249A (en) * 1999-10-13 2001-04-24 Asahi Kasei Corp Molded tray for food made of nonwoven fabric
IT201900005840A1 (en) * 2019-04-16 2020-10-16 Nazena S R L BIODEGRADABLE PACKAGING MATERIAL AND METHOD FOR MAKING THIS MATERIAL
JP2021046639A (en) * 2019-09-20 2021-03-25 セイコーエプソン株式会社 Fiber structure and fiber structure block

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001114249A (en) * 1999-10-13 2001-04-24 Asahi Kasei Corp Molded tray for food made of nonwoven fabric
JP4548877B2 (en) * 1999-10-13 2010-09-22 旭化成せんい株式会社 Non-woven microwave tray
IT201900005840A1 (en) * 2019-04-16 2020-10-16 Nazena S R L BIODEGRADABLE PACKAGING MATERIAL AND METHOD FOR MAKING THIS MATERIAL
JP2021046639A (en) * 2019-09-20 2021-03-25 セイコーエプソン株式会社 Fiber structure and fiber structure block

Also Published As

Publication number Publication date
JP2760412B2 (en) 1998-05-28

Similar Documents

Publication Publication Date Title
US5308663A (en) Biodegradable nonwoven fabric and its molding vessel
US6376034B1 (en) Absorbent material for use in disposable articles and articles prepared therefrom
US5195465A (en) Flaked cellulose litter material which can be reused as food or fertilizer
JPH04505870A (en) biodegradable incontinence devices
BR112017016720B1 (en) MOISTURE RESISTANT BIODEGRADABLE COMPOSITION
JP2002105938A (en) Natural down fiber oil adsorptive mat
JPH06248552A (en) Biodegradable fiber composition and hot melt adhesive fiber useful therefor
JP2001212899A (en) Decomposable highly water-absorbing composite
JPH04189740A (en) Food tray and case
JPH0892006A (en) Biodegradable resin molded product containing biologically active substance
KR880010033A (en) Liquid Absorption Products
JP2862274B2 (en) Manufacturing method of water-absorbing sheet
JP2884091B2 (en) Degradable nonwoven fabric
JP2742345B2 (en) Biodegradable nonwoven molded container and molding method thereof
JP3574066B2 (en) Pet toilet
WO2001049584A1 (en) Antibacterial/biodegradable extraction vessel
JP2742347B2 (en) Biodegradable non-woven molded container
US5591504A (en) Disposable, biodegradable air freshening device and food preservative
JP4704530B2 (en) Breathable container storage insecticide
JPH0457951A (en) Biodegradable nonwoven fabric
JP2636185B2 (en) Clay / gelatin composite porous body, its fibrous body, and production method thereof
JP2836785B2 (en) Biodegradable filter unit
JPH10276600A (en) Floor mat for shed for animals
KR100227883B1 (en) Method for manufacturing aromatic trees-like nonwoven fabric of disinfection and insecticide
JP2006174805A (en) Insect-proof deodorant package

Legal Events

Date Code Title Description
R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

LAPS Cancellation because of no payment of annual fees