JP2005053510A - Biodegradable container - Google Patents

Biodegradable container Download PDF

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JP2005053510A
JP2005053510A JP2003284520A JP2003284520A JP2005053510A JP 2005053510 A JP2005053510 A JP 2005053510A JP 2003284520 A JP2003284520 A JP 2003284520A JP 2003284520 A JP2003284520 A JP 2003284520A JP 2005053510 A JP2005053510 A JP 2005053510A
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container
pulp material
lid
biodegradable
fitting
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Masaru Sase
勝 佐瀬
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Kyoraku Co Ltd
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Kyoraku Co Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
    • Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics

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Abstract

<P>PROBLEM TO BE SOLVED: To provide a biodegradable container in which the material, even if made of a pulp material, is provided with high rigidity, excellent handleability and safety are attained and a container body equipped with a lid body having an engagement structure has an excellent sealing property. <P>SOLUTION: The biodegradable container 1 is composed of a non-wood pulp material or wood pulp material or the mixed pulp material of these materials. The pulp material to be obtained by performing a paper-making process of the non-wood pulp material or the wood pulp material or the mixed pulp material of these materials is sucked, compressed, dehydrated and is dried under pressure and heating, to be molded into a container material with its shape fixed. The container material is further highly pressurized and heated to heat-cure the cellulose in the pulp material to constitute a degradable container. The degradable container 1 is constituted of a container body 2 and a lid body 3 thereof. The container body 2 and the lid body 3 have an engaging structure, allowing them to be sealed when they are engaged with each other. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、食品用などのように特に耐水性、耐油性および安全性が要求される容器であって、非木材パルプ素材または木材パルプ素材あるいはこれらの混合パルプ素材からなる生分解性容器に関するものである。   The present invention relates to a container that is particularly required for water resistance, oil resistance and safety, such as for foods, etc., and relates to a biodegradable container made of a non-wood pulp material, a wood pulp material, or a mixed pulp material thereof. It is.

食品用などの容器は、耐水性、耐油性が要求され、かつ高い安全性が要求されるが、パルプ製容器は耐水性、耐油性に劣るものであるから（例えば特開平１０−２９８９００号公報参照）、低叩解度パルプ繊維の空隙を埋めるため高叩解度パルプの繊維を充填して、耐水性、耐油性を向上るなど煩雑な処理を必要としていた（例えば特開平８−９２９００号公報参照）。また、従来のパルプ製容器は、その素材の物性から硬度を高くできず、容器本体に蓋体を備えた容器であっても密封性を備えたものが得られなかった（特開２００２−１２８１１０公報参照）。
特開平１０−２９８９００号公報 特開平８−９２９００号公報 特開２００２−１２８１１０公報 特開２００１−１１４３１８公報 Containers for food and the like are required to have water resistance and oil resistance and high safety, but pulp containers are inferior in water resistance and oil resistance (for example, JP-A-10-298900). For example, Japanese Patent Laid-Open No. 8-92900 requires complicated treatment such as filling high-beatability pulp fibers to fill the voids of the low-beatability pulp fibers to improve water resistance and oil resistance. ). Moreover, the conventional pulp container cannot increase the hardness due to the physical properties of the raw material, and even a container having a lid on the container body cannot be obtained with a sealing property (Japanese Patent Laid-Open No. 2002-128110). See the official gazette).
JP-A-10-298900 JP-A-8-92900 JP 2002-128110 A JP 2001-114318 A

ところで、上記特開平８−９２９００号公報に記載されているもののように、パルプ繊維の空隙を他のパルプ繊維で埋めた構成のものでは、高度の耐水性、耐油性が得られないばかりでなく、パルプ繊維のケバが露出していて、食品用の容器としては外観性に難があり、そのため衛生上の面からも好ましくないことが指摘されていた。   By the way, not only the high water resistance and oil resistance can be obtained with the structure in which the gaps of the pulp fibers are filled with other pulp fibers as described in the above-mentioned JP-A-8-92900. In addition, it has been pointed out that the pulp fibers are exposed and the appearance of the container for food is difficult, which is undesirable from the viewpoint of hygiene.

また、前記特開２００１−１１４３１８公報に示すような密封容器をパルプ素材で構成するには、容器本体および蓋体の硬度を高くしなければならないが、パルプ素材に硬度を増すための樹脂層などを積層したのでは、パルプ素材の生分解性を損なうことになる。   Further, in order to construct a sealed container as shown in the above-mentioned JP-A-2001-114318 with a pulp material, the hardness of the container main body and the lid must be increased, but a resin layer for increasing the hardness of the pulp material, etc. If these are laminated, the biodegradability of the pulp material is impaired.

そこで、本発明は、パルプ素材を脱水後、加圧および加熱により乾燥して形状を固定した容器素材を成形して、その容器素材にさらに高度の加圧および加熱を施してパルプ素材のセルロース分を熱硬化させることにより、容器素材自体がすぐれた耐水性、耐油性を有するとともに、表面にパルプ繊維のケバが生じず、外観性および衛生性にすぐれるうえ、パルプ素材であってもそれ自体に十分高い硬度をもたせて、取扱性や安全性にすぐれ、容器本体に嵌合構造の蓋体を備えた容器であれば密封性にすぐれた生分解性容器を提供することを目的とするものである。   Accordingly, the present invention forms a container material whose shape is fixed by dehydrating the pulp material and then drying by pressurization and heating, and subjecting the container material to further pressurization and heating to obtain the cellulose content of the pulp material. By heat curing, the container material itself has excellent water resistance and oil resistance, and there is no flaking of pulp fibers on the surface, and it has excellent appearance and hygiene, and even if it is a pulp material itself The purpose is to provide a biodegradable container with excellent sealing properties if it has a sufficiently high hardness, excellent handling and safety, and a container body with a fitting structure lid. It is.

上記目的を達成するための本発明の請求項１に係る生分解性容器は、非木材パルプ素材または木材パルプ素材あるいはこれらの混合パルプ素材からなる容器であって、上記パルプ素材を漉き加工して得られるパルプ素材を、吸引、圧縮して脱水後、加圧および加熱によって乾燥されかつ形状が固定された容器素材に成形し、その容器素材にさらに高度の加圧および加熱を施してパルプ素材のセルロース分を熱硬化させてなることを特徴とするものである。   The biodegradable container according to claim 1 of the present invention for achieving the above object is a container made of a non-wood pulp material, a wood pulp material or a mixed pulp material thereof, The resulting pulp material is sucked, compressed and dehydrated, then formed into a container material that has been dried and fixed in shape by pressing and heating, and the container material is further pressurized and heated to give a pulp material It is characterized by thermosetting the cellulose content.

また、本発明の請求項２に係る生分解性容器は、請求項１の構成において、容器は、容器本体とその蓋体とで構成され、容器本体と蓋体とは互いの嵌合構造をなしていることを特徴とするものである。   A biodegradable container according to claim 2 of the present invention is the structure of claim 1, wherein the container is composed of a container body and its lid, and the container body and the lid have a fitting structure with each other. It is characterized by being.

本発明の請求項３に係る生分解性容器は、請求項２の構成において、容器本体と蓋体の嵌合構造は、嵌合状態において密封される構成であることをことを特徴とするものである。   A biodegradable container according to claim 3 of the present invention is characterized in that, in the configuration of claim 2, the fitting structure of the container body and the lid is sealed in the fitted state. It is.

本発明の請求項４に係る生分解性容器は、請求項３の構成において、嵌合状態において密封される構成は、容器本体の開口端部と蓋体の嵌合部が二重に接合する二重嵌合構造であることを特徴とするものである。   In the biodegradable container according to claim 4 of the present invention, in the structure of claim 3, the structure sealed in the fitted state is such that the opening end portion of the container body and the fitting portion of the lid body are doubly joined. It is a double fitting structure.

本発明の請求項５に係る生分解性容器は、請求項２、３または４の構成において、容器本体と蓋体の嵌合構造は、蓋体の嵌合部に開封を容易にする指掛け構造を有していることを特徴とするものである。   The biodegradable container according to claim 5 of the present invention is the structure of claim 2, 3 or 4, wherein the fitting structure of the container main body and the lid is a finger-hook structure that facilitates opening the fitting portion of the lid. It is characterized by having.

本発明によれば、パルプ素材を脱水後、加圧および加熱により乾燥して形状を固定した容器素材を成形して、その容器素材にさらに高度の加圧および加熱を施してパルプ素材のセルロース分を熱硬化させることにより、容器素材自体がすぐれた耐水性、耐油性を有するとともに、表面にパルプ繊維のケバが生じず、外観性および衛生性にすぐれるうえ、パルプ素材であってもそれ自体に十分高い硬度をもたせて、取扱性や安全性にすぐれ、容器本体に嵌合構造の蓋体を備えた容器であれば密封性にすぐれた生分解性容器を得ることができる。   According to the present invention, after the pulp material is dehydrated, a container material having a fixed shape is formed by drying by pressing and heating, and the container material is further subjected to high pressure and heating to obtain a cellulose content of the pulp material. By heat curing, the container material itself has excellent water resistance and oil resistance, and there is no flaking of pulp fibers on the surface, and it has excellent appearance and hygiene, and even if it is a pulp material itself If the container is provided with a sufficiently high hardness, excellent in handleability and safety, and provided with a lid body with a fitting structure in the container body, a biodegradable container excellent in sealing performance can be obtained.

図１は本発明の一実施の形態に係る生分解性容器の斜視図、図２は同上断面図、図３は本発明の一実施の形態に係る一部の断面図である。   FIG. 1 is a perspective view of a biodegradable container according to an embodiment of the present invention, FIG. 2 is a sectional view of the same, and FIG. 3 is a partial sectional view of an embodiment of the present invention.

本発明に係る生分解性容器１は、非木材パルプ素材または木材パルプ素材あるいはこれらの混合パルプ素材からなる容器である。この生分解性容器１は、非木材パルプ素材または木材パルプ素材あるいはこれらの混合パルプ素材を漉き加工して得られるパルプ素材からなる。すなわち、上記パルプ素材は、吸引、圧縮して脱水後、加圧および加熱によって乾燥されかつ容器としての形状に固定された容器素材に成形される。そして、この容器素材にさらに高度の加圧および加熱を施してパルプ素材のセルロース分を熱硬化し、図１および図２に示す生分解性容器１を構成する。   The biodegradable container 1 according to the present invention is a container made of a non-wood pulp material, a wood pulp material, or a mixed pulp material thereof. The biodegradable container 1 is made of a pulp material obtained by firing a non-wood pulp material, a wood pulp material, or a mixed pulp material thereof. That is, the pulp material is formed into a container material that is sucked, compressed, dehydrated, dried by pressurization and heating, and fixed in a shape as a container. The container material is further pressurized and heated to thermally cure the cellulose content of the pulp material, thereby forming the biodegradable container 1 shown in FIGS. 1 and 2.

図１および図２に示すように、生分解性容器１は、容器本体２とその蓋体３とで構成され、容器本体２と蓋体３とは互いの嵌合構造４をなしている。すなわち、容器本体２の開口端部５は逆Ｕ字状の屈折形成されており、蓋体３の上記開口端部５に対する嵌合部６は凹溝状に形成されていて、容器本体２に対して蓋体３は、容器本体２の開口端部５に蓋体３の嵌合部６が嵌合して、容器本体２が蓋体３により密封される構造となっている。容器本体２の開口端部５と蓋体３の嵌合部６の嵌合構造４は、容器本体２の開口部全周にわたって密封状態となるものであるが、必要に応じてその一部を非嵌合構造とすることも任意である。   As shown in FIGS. 1 and 2, the biodegradable container 1 is composed of a container main body 2 and a lid body 3 thereof, and the container main body 2 and the lid body 3 form a fitting structure 4 with each other. That is, the opening end 5 of the container body 2 is formed in an inverted U-shape, and the fitting portion 6 of the lid 3 with respect to the opening end 5 is formed in a concave groove shape. On the other hand, the lid 3 has a structure in which the fitting portion 6 of the lid 3 is fitted to the opening end 5 of the container main body 2 so that the container main body 2 is sealed by the lid 3. The fitting structure 4 of the opening end portion 5 of the container body 2 and the fitting portion 6 of the lid 3 is in a sealed state over the entire circumference of the opening portion of the container body 2, but a part of the fitting structure 4 is provided as necessary. A non-fitting structure is also optional.

上記容器本体２の開口端部５と蓋体３の嵌合部６からなる嵌合構造４は、容器本体２の開口端部５の内側面５ａと外側面５ｂに、蓋体２の嵌合部６の内側面６ａと外側面６ｂがそれぞれ接合する二重嵌合構造をなしている。この二重嵌合構造は、図２に示すような開口端部５が逆Ｕ字状の屈折形状でなくてもよく、図３に示すように、開口端部５をその上端部を平坦面とし、それに応じて蓋体２の嵌合部６も幅広の凹溝状に形成される。そして、このような二重嵌合構造によれば、容器本体２の開口端部５の平坦面とその面に接合する蓋体２の嵌合部６の幅広の凹溝状の面が封止効果をさらに高めるので、容器本体２の蓋体３による密封状態が向上する。   The fitting structure 4 including the opening end 5 of the container body 2 and the fitting portion 6 of the lid 3 is configured so that the lid 2 is fitted to the inner surface 5 a and the outer surface 5 b of the opening end 5 of the container body 2. A double fitting structure in which the inner side surface 6a and the outer side surface 6b of the portion 6 are joined together is formed. In this double fitting structure, the opening end 5 as shown in FIG. 2 may not have an inverted U-shaped refracting shape. As shown in FIG. 3, the opening end 5 has a flat surface at its upper end. Accordingly, the fitting portion 6 of the lid 2 is also formed in a wide groove shape. And according to such a double fitting structure, the flat surface of the opening end part 5 of the container main body 2 and the wide groove-like surface of the fitting part 6 of the lid 2 joined to the surface are sealed. Since the effect is further enhanced, the sealed state of the container body 2 by the lid 3 is improved.

図３に示す容器本体２と蓋体３の嵌合構造４おいては、容器本体２の開口端部５の外周にフランジ部７を一体に張り出し形成してあり、蓋体３の嵌合部６にも上記フランジ部７に対応するフランジ部８を形成してある。容器本体２に対して蓋体３の開封を容易にするには、蓋体３のフランジ部８に容器本体２のフランジ部７との間の爪掛け部となる凹部を形成したり、容器本体２のフランジ部７に蓋体３のフランジ部８との間の爪掛け部となる凹部を形成する（これらはいずれも図示していない）。また、図３に示す蓋体３のフランジ部８の一部または全周を容器本体２のフランジ７よりやや張り出すように形成すれば、容器本体２に対して蓋体３の開封を容易にすることができる。なお、その張り出し部分は屈曲形状としてもよい。   In the fitting structure 4 between the container body 2 and the lid 3 shown in FIG. 3, a flange portion 7 is integrally formed on the outer periphery of the open end 5 of the container body 2, and the fitting portion of the lid 3 is formed. 6 also has a flange portion 8 corresponding to the flange portion 7. In order to facilitate the opening of the lid 3 with respect to the container body 2, a recess serving as a nail hook between the flange portion 8 of the container body 2 and the flange body 8 of the lid body 3 is formed. A concave portion serving as a claw hook portion between the flange portion 7 and the flange portion 8 of the lid 3 is formed in the second flange portion 7 (none of these are shown). Further, if a part or the entire circumference of the flange portion 8 of the lid body 3 shown in FIG. 3 is formed so as to slightly protrude from the flange 7 of the container body 2, the lid body 3 can be easily opened with respect to the container body 2. can do. Note that the protruding portion may be bent.

本発明に係る生分解性容器１を構成する非木材パルプ素材の原料は、自生している草木類（葦、竹、エスパルト、雑草等）、繊維作物（ケナフ、コットンリンター、アカバ、サイザル、ジュート、亜麻、こうぞ、みつまた等）、農産副産物（サトウキビ殻、麦わら、稲わら、パーム椰子殻、バナナ茎葉等）である。また、木材パルプ素材の原料は、闊葉樹（カシ等）、針葉樹（杉、ヒノキ等）である。   The raw material of the non-wood pulp material that constitutes the biodegradable container 1 according to the present invention is a natural plant (vegetables, bamboo, esparto, weeds, etc.), fiber crop (kenaf, cotton linter, aqaba, sisal, jute) , Flax, zozo, mitsumata etc.) and agricultural by-products (sugar cane husk, wheat straw, rice straw, palm coconut husk, banana stalk etc.). The raw materials for the wood pulp material are birch trees (such as oak) and conifers (such as cedar and cypress).

図４ないし図６はそれぞれ本発明の他の実施の形態を示す一部の断面図であって、それぞれ嵌合構造を例示している。   4 to 6 are partial cross-sectional views showing other embodiments of the present invention, each illustrating a fitting structure.

図４に示すものは、嵌合構造４が容器本体２の開口端部５に対して蓋体３の嵌合部６が密に被さる構造となっており、蓋体３の嵌合部６の下方に屈曲させて開封時の指掛け部９を成している。   In the structure shown in FIG. 4, the fitting structure 4 has a structure in which the fitting portion 6 of the lid 3 is tightly covered with the opening end 5 of the container body 2. It is bent downward to form a finger hook portion 9 at the time of opening.

また、図５に示すものは、嵌合構造４が容器本体２の開口端部５とそれから張り出しているフランジ部７に対して、蓋体３の嵌合部６とフランジ部８がともに密に被さる構造をなす二重嵌合構造となっているとともに、蓋体３のフランジ部８が容器本体２のフランジ部７より少し張り出していて、その張り出した部分が開封時の指掛け部９をなしている。図６に示すものは図４に示すものの変形例であって、蓋体３のフランジ部８を外方に張り出させて開封時の指掛け部９を形成したものである。   Further, in the structure shown in FIG. 5, the fitting portion 4 of the lid 3 is closely connected to the opening end portion 5 of the container body 2 and the flange portion 7 protruding from the fitting structure 4. In addition to the double-fitting structure that forms the covering structure, the flange portion 8 of the lid 3 projects slightly from the flange portion 7 of the container body 2, and the projecting portion forms a finger-hook portion 9 at the time of opening. Yes. FIG. 6 shows a modification of that shown in FIG. 4, in which the flange portion 8 of the lid body 3 is projected outward to form a finger hook portion 9 at the time of opening.

本発明に係る生分解性容器は、非木材パルプ素材または木材パルプ素材あるいはこれらの混合パルプ素材を漉き加工して得られるパルプ素材を、吸引、圧縮して脱水する工程、脱水したパルプ素材を加圧および加熱によって乾燥しかつ形状を固定して容器素材を成形する工程、その容器素材にさらに高度の加圧および加熱を施してパルプ素材のセルロース分を熱硬化させる工程により製造される。次にその一実施例を示す。   The biodegradable container according to the present invention includes a step of sucking, compressing and dehydrating a pulp material obtained by rolling and processing a non-wood pulp material, a wood pulp material or a mixed pulp material thereof, and adding a dehydrated pulp material. The container material is produced by drying and pressing the shape by fixing with pressure and heating, and the step of subjecting the container material to further pressurization and heating to thermally cure the cellulose content of the pulp material. Next, an example is shown.

非木材パルプ素材の原料として葦の繊維素５０〜５５％、セルロース４５〜５０％を含有する原料溶液を調製し、次の工程により生分解性容器１を製造する。   A raw material solution containing 50-55% silk fiber and 45-50% cellulose is prepared as a raw material for the non-wood pulp material, and the biodegradable container 1 is manufactured by the following steps.

原料溶液→漉き加工（パルプ素材）→吸引・圧縮による脱水→加圧・加熱（１Ｋｇ／ｃｍ2、１００℃〜１２０℃）による乾燥・形状固定（容器素材）→高度の加圧・加熱（３Ｋｇ／ｃｍ2、１６０℃〜１８０℃）によるセルロース分の熱硬化（生分解性容器） Raw material solution → Shoe processing (pulp material) → Dehydration by suction and compression → Drying and shape fixing (container material) by pressurization and heating (1 Kg / cm 2 , 100 ° C to 120 ° C) → High pressure and heating (3 Kg) / Cm 2 , 160 ° C to 180 ° C) for thermosetting cellulose (biodegradable container)

上記の工程で得られた生分解性容器は、次の性能を有する。
１．吸湿性が少ない（吸湿率５％〜９％）。
２．セルロース効果層により防漏水性にすぐれる（５０Ｈ〜５００Ｈ）。
３．セルロース硬化後の比重が概ね０．６７〜０．７０ｇ／ｃｍ3であり、容器の軽量化が図れる。
４．電子レンジの使用に問題がない（耐熱性にすぐれる）。
５．着色、耐油加工等により性能の向上を図ることができる。
６．焼却してもＮＯＸ・ダイオキシン等の有害ガスが発生しない。
７．土中において細菌による生分解性にすぐれ、泥化処理ができる。 The biodegradable container obtained by the above process has the following performance.
1. Hygroscopicity is low (moisture absorption rate 5% to 9%).
2. Excellent cellulose leakage resistance by the cellulose effect layer (50H to 500H).
3. The specific gravity after cellulose curing is approximately 0.67 to 0.70 g / cm 3 , and the weight of the container can be reduced.
4). There is no problem in using a microwave oven (excellent heat resistance).
5). The performance can be improved by coloring, oil-proofing and the like.
6). No harmful gases such as NOX and dioxin are generated even when incinerated.
7). It is excellent in biodegradability by bacteria in the soil and can be muddy.

本発明に係る生分解性容器は、耐水性、耐油性にすぐれているうえ、軽量で密封性にもすぐれ、しかも生分解による廃棄処理ができるので、食品用の容器のほか、薬品用や肥料用などの容器として好適であって、きわめて汎用性が高く、また、自然環境の保全、食品や医薬品の安全性向上にも大きく寄与するものである。よって、今後、広範囲な分野での利用拡大が大いに期待できるものである。   The biodegradable container according to the present invention is excellent in water resistance and oil resistance, is light and sealable, and can be disposed of by biodegradation. It is suitable as a container for use, and is extremely versatile. Also, it greatly contributes to the preservation of the natural environment and the safety of foods and pharmaceuticals. Therefore, it is highly expected that the use will be expanded in a wide range of fields in the future.

本発明の一実施の形態に係る生分解性容器の斜視図である。It is a perspective view of the biodegradable container which concerns on one embodiment of this invention. 同上断面図である。It is sectional drawing same as the above. 本発明の一実施の形態に係る一部の断面図である。It is a partial sectional view concerning an embodiment of the invention. 本発明の他の実施の形態に係る一部の断面図である。It is a partial sectional view concerning other embodiments of the present invention. 本発明のさらに他の実施の形態に係る一部の断面図である。It is a partial sectional view concerning other embodiments of the present invention. 本発明のまたさらに他の実施の形態に係る一部の断面図である。It is a partial sectional view concerning still another embodiment of the present invention.

符号の説明Explanation of symbols

１ 生分解性容器
２ 容器本体
３ 蓋体
４ 嵌合構造
５ 開口端部
５ａ 内側面
５ｂ 外側面
６ 嵌合部
６ａ 内側面
６ｂ 外側面
７ フランジ部
８ フランジ部
９ 指掛け部 DESCRIPTION OF SYMBOLS 1 Biodegradable container 2 Container main body 3 Cover body 4 Fitting structure 5 Open end 5a Inner side surface 5b Outer side surface 6 Fitting part 6a Inner side surface 6b Outer side surface 7 Flange part 8 Flange part 9 Finger hook part

Claims (5)

非木材パルプ素材または木材パルプ素材あるいはこれらの混合パルプ素材からなる容器であって、上記パルプ素材を漉き加工して得られるパルプ素材を、吸引、圧縮して脱水後、加圧および加熱によって乾燥されかつ形状が固定された容器素材に成形し、その容器素材にさらに高度の加圧および加熱を施してパルプ素材のセルロース分を熱硬化させてなることを特徴とする生分解性容器。   A container made of non-wood pulp material, wood pulp material, or mixed pulp material, which is dried by pressurization and heating after dewatering by sucking, compressing and purging the pulp material. A biodegradable container formed by forming into a container material having a fixed shape, and subjecting the container material to further pressurization and heating to thermally cure the cellulose content of the pulp material. 容器は、容器本体とその蓋体とで構成され、容器本体と蓋体とは互いの嵌合構造をなしていることを特徴とする請求項１記載の生分解性容器。   The biodegradable container according to claim 1, wherein the container is composed of a container main body and a lid body thereof, and the container main body and the lid body have a mutual fitting structure. 容器本体と蓋体の嵌合構造は、嵌合状態において密封される構成であることをことを特徴とする請求項２記載の生分解性容器。   The biodegradable container according to claim 2, wherein the fitting structure of the container body and the lid is configured to be sealed in the fitted state. 嵌合状態において密封される構成は、容器本体の開口端部と蓋体の嵌合部が二重に接合する二重嵌合構造であることを特徴とする請求項３記載の生分解性容器。   4. The biodegradable container according to claim 3, wherein the structure sealed in the fitted state is a double-fitting structure in which the opening end of the container body and the fitting part of the lid are double joined. . 容器本体と蓋体の嵌合構造は、蓋体の嵌合部に開封を容易にする指掛け構造を有していることを特徴とする請求項２、３または４記載の生分解性容器。   The biodegradable container according to claim 2, 3 or 4, wherein the fitting structure of the container main body and the lid has a finger hooking structure that facilitates opening at the fitting portion of the lid.
JP2003284520A 2003-07-31 2003-07-31 Biodegradable container Pending JP2005053510A (en)

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