EP1232207A4 - Composition de moulage d'articles et procede de fabrication d'articles moules utilisant cette composition - Google Patents

Composition de moulage d'articles et procede de fabrication d'articles moules utilisant cette composition

Info

Publication number
EP1232207A4
EP1232207A4 EP00955156A EP00955156A EP1232207A4 EP 1232207 A4 EP1232207 A4 EP 1232207A4 EP 00955156 A EP00955156 A EP 00955156A EP 00955156 A EP00955156 A EP 00955156A EP 1232207 A4 EP1232207 A4 EP 1232207A4
Authority
EP
European Patent Office
Prior art keywords
molding
composition
articles
powder
weight
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.)
Withdrawn
Application number
EP00955156A
Other languages
German (de)
English (en)
Other versions
EP1232207A1 (fr
Inventor
Jong-Yup Jang
Sung-Bin Lim
Chol-Soo Chung
Jun-Mo Gil
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.)
ECONEER Co Ltd
Original Assignee
ECONEER 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
Priority claimed from KR1019990041069A external-priority patent/KR100338260B1/ko
Priority claimed from KR10-1999-0056132A external-priority patent/KR100368048B1/ko
Priority claimed from KR10-1999-0056131A external-priority patent/KR100368047B1/ko
Priority claimed from KR1020000049850A external-priority patent/KR20020016679A/ko
Application filed by ECONEER CO Ltd filed Critical ECONEER CO Ltd
Publication of EP1232207A1 publication Critical patent/EP1232207A1/fr
Publication of EP1232207A4 publication Critical patent/EP1232207A4/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59

Definitions

  • the present invention relates, in general, to a composition for molding articles and, more particularly, to a composition based on an environmentally friendly material, which can be molded into articles which are harmless to the body and the environment and biodegradable or biodisintegrative . Also, the present invention is concerned with a method for preparing such an article from the composition.
  • Environmental hormones scientifically called endocrine disrupters, are generic materials that interrupt or disrupt the action of hormones in human or animal bodies.
  • the name "environmental hormones” was given to them because they act just like natural hormones in vivo, owing to their chemical structures which are similar to natural hormones' .
  • environmental hormones may bring about serious health problems in humans, including reproductive function abnormalities, breakdown of sex ratio balance, unbalanced hormone secretion, immune function suppression, and increased rate of breast and prostatic cancers.
  • policies has been directed to the regulation of the use of environmental hormone- causing materials or articles in many countries.
  • recent legislation in response to environmental concerns stemming from environmental hormones and pollution, has been enacted to prohibit the use of environmental hormone-causing materials or articles in children's and dietary products.
  • a composition for molding articles comprising: 90 parts by weight or less of grain powder as a base material and 20 parts by weight or less of compounds containing at least one component selected from the group consisting of hydroxyl (R-OH) , ester (R- C0 2 R' ) , carboxylic acid (R-C0 2 H) , amide (R-CONH-R' ) , imides (R-CONHCO-R' ) , amine (R-NH 2 ) , anhydride (R-C0 2 CO-R' ) , phosphonic acid (R-P0 3 H ) , sulfonic acid(R-S0 4 H) and melamine (wherein, R and R' are independently H, aliphatic or aromatic organic compounds, or organic compounds containing the above-mentioned components) as a molding assistant.
  • R and R' are independently H, aliphatic or aromatic organic compounds, or organic compounds containing the above-mentioned components
  • the composition may further comprise at least one additive selected from the group consisting of molding texture binders and functional improvers for molded articles.
  • the additive is used at an amount of 90 parts by weight or less based on the weight of the composition, and the molding texture binder is a fibrous material.
  • a method for preparing a molded article comprising the steps of: homogeneously mixing a composition comprising 90 parts by weight or less of grain powder as a base material and 20 parts by weight or less of a molding assistant; loading the composition on a molding machine; and molding the composition into an article for a predetermined period of time at a predetermined atmosphere.
  • Fig. 1 is a partially broken perspective view showing a molded article in accordance with an embodiment of the present invention.
  • Fig. 2 is a process flow chart illustrating a method for preparing molded articles from a composition in accordance with another embodiment of the present invention.
  • Fig. 1 shows a molded article prepared from a composition of the present invention in a partially broken perspective view.
  • the composition may be molded into various forms.
  • FIG. 1 there is an article 10 which has an ordinary bowl form.
  • a body 15 of the article 10 is prepared from a composition comprising wheat flour and a molding assistant powder, the article 10 has two coating layers 20 and 25 which are for its exterior and interior, respectively.
  • the article 10 may alternatively be coated only on its one side or prepared with no coating. Since a powder phase of the composition can be pressurized without being modified additionally in a molding machine, the present invention is advantageous in that the molding process is simplified.
  • wheat flour is the most preferable, but the present invention is not limited to this.
  • an ordinary carbohydrate-based grain powder such as rice, starch, barley, or corn powder may be used as a base material for the molding composition.
  • grain powders may be used as they are or in a viscous form, for example, dough mixed with a small quantity of water.
  • the base material of the present invention may be in the form of powder, dough, and liquid.
  • suitable for use as a base material for the composition of the present invention is a natural product or by-product such as chaff, sawdust, starch, glue, fish glue, or rice.
  • the molded articles prepared from grain powders in accordance with the present invention are environmentally friendly because they release no toxic materials to the environment upon biodegradation.
  • the molding assistant it is most preferably the said materials, but is not limited thereto.
  • a pine resin is effectively used as a molding assistant by taking advantage of its molding-beneficial properties, such as foaming properties.
  • the molding assistant materials must be selected discreetly in order to meet the environmentally friendly requirements of the final molding products.
  • the contents of components contained in the molding assistant must be selected in consideration of their influence on the body and the environment.
  • the molding assistant may be a variety of resins obtained from nature sources, for example, pine resin and natural rubbers. Usually, they are used as foaming or coating materials.
  • the resins serve to maintain the final products in molded forms and to represent glosses on the surface of the final products.
  • Representative of the said resins is a pine resin.
  • the pine resin is deprived of oil and moisture and the residues are dried and powdered.
  • suitable for use as molding assistants for the composition of the present invention are compounds containing at least one component selected from the group consisting of hydroxyl (R-OH) , ester (R-C0 2 R' ) , carboxylic acid (R-C0 2 H) , amide (R-CONH-R' ) , imides (R- CONHCO-R' ) , amine (R-NH 2 ) , anhydride (R-C0 2 CO-R' ) , phosphonic acid (R-P0 3 H 2 ) , sulfonic acid(R-S0 4 H) and melamine (wherein, R and R' are independently H, aliphatic or aromatic organic compounds, or organic compounds containing the above-mentioned components), but is not limited thereto. Any materials may be used if they can improve molding ability.
  • the compounds may have various molecular weight and structure according to the components therein.
  • Suitable for use as molding texture binders are powdered fibrous materials such as stems and leaves of various herbs and trees.
  • the fibrous materials include wormwood, reed, wheat straw, barley straw, rice straw, cotton and their debris. Any materials may be used if they provide vegetable fibrous components.
  • the molding texture binder serves to fortify the bonding strength between neighboring molding textures as well as contributing greatly to the physical properties of the final products, especially the strength of the molded products. Comparing molded products prepared from the base material and the molding assistant; and from the base material, the molding assistant and the molding texture binder clearly demonstrates the great contribution of the molding texture binder to the strength of the products.
  • Preferred, non-limitative examples of functional improvers for molded articles include stone powder, soil powder, fine sand powder, and fine yellow earth powder.
  • the functional improver allows the final product to have the appearance and functions of potteries.
  • the molded articles are suitable for use in household wares and various construction materials such as pavement blocks.
  • their functions cannot be sufficiently expressed without completely waterproofing the molded articles.
  • application of an appropriate amount of at least one functional improver selected from soil powder, fine sand powder and fine yellow earth powder allows the final products to be freely expressed in strength, color, weight, and thickness.
  • the final products can be prepared with suitable properties depending on their intended final uses.
  • the grain powders and the above-mentioned resins contained in the molded articles according to the present invention are harmless to the body and friendly to the environment.
  • the molding assistants play a role in determining the transparency of the molded articles. The more the molding assistant, the clearer the final product. Thus, the transparency of the final molded article can be controlled with the content of the molding assistant.
  • the molded articles of the present invention cannot be made completely transparent like glass articles, but shows high transparency by controlling the content of the molding assistant.
  • the composition for molding articles in accordance with the present invention may be in the form of a powder, dough, or a liquid.
  • articles When articles are produced by molding, they are usually used in liquid forms.
  • the present invention is advantageous in that the compositions can be employed irrespective of whether they are in a liquid phase or a powder phase.
  • the powder phase in the case that a powder phase of the composition is used for the molding, the powder phase can be fed, as it is, into a molding machine and pressurized.
  • the present invention enjoys the advantage of simplifying the molding process.
  • a powder phase of the composition for molding articles in accordance with the present invention allows the molding process to be simply organized and thus, can reduce the production cost.
  • Fig. 2 is a process flow of producing a molded article from the composition of the present invention.
  • composition constituents are prepared and homogeneously mixed (SI) .
  • SI homogeneously mixed
  • a separate stirrer may be used.
  • the composition When the composition is prepared in a powder phase, it may undergo a separate drying process to control its moisture content or it may be hydrated to retain an appropriate moisture content. On the whole, a powder is virtually impossible to store in a completely dried state if exposed to the air, and exhibits an unavoidable moisture content.
  • the powder composition may be changed in its moisture content depending on ambient temperature and humidity. Since the moisture content of the composition may have a direct influence on the storage of the raw materials and/or the maintenance of molded shapes of final products, the moisture content needs to be controlled diversely and accurately in accordance with the intended uses of the final products.
  • the composition When the composition is prepared in a liquid phase, a drying process is separately demanded for molded articles. Unless the moisture content of the final product is accurately controlled, it may slowly disintegrate because of the moisture content.
  • the base material is used at an amount of 90 parts by weight, greater than 20 parts by weight of the molding assistant is not favorable in consideration of production costs.
  • a greater amount of the molding assistant than the amount limit is not unable to achieve the object of the present invention, but is merely unfavorable in an economic aspects, and is within the scope of the invention.
  • the prepared composition is colorized (S2) .
  • an edible dye with a desired color is added in an appropriate amount to the homogeneously mixed composition.
  • this colorizing step is, however, optional.
  • Various colors can be expressed on the molded articles by applying various edible dyes.
  • a powder phase or a liquid phase of the prepared composition is molded into a desired shape in a molding machine under appropriate conditions (S3).
  • important parameters include temperature, pressure and time.
  • the molding temperature is preferably controlled within the range of 100-200 °C, the molding pressure within the range of 200-400 kg/cm 2 , and the molding time within the range of several seconds to tens of seconds.
  • control of the molding conditions is the most important factor in successfully conducting the molding process. Excessive temperature, pressure or time may cause the molded article to be burned or discolored.
  • the composition is molded at 150 °C for about 20 sec under a pressure of 300 kg/cm 2 .
  • a molded article is coated on one or both sides (S4).
  • the molded articles prepared from the composition of the present invention are biodegradable or biodisintegrative and addition of a small amount of water suffices for the disposal of the articles.
  • contact with water must be avoided.
  • a waterproofing treatment may be conducted on the surfaces of the molded articles.
  • functional surface layers may be provided to bring about an improvement in appearance, strength, flame resistance, wear resistance, and etc.
  • the above- mentioned resin serving as a molding assistant, may be used. Formation of such a functional surface layer may be achieved by adding a surface-improving material during the molding or by coating the surfaces of molded articles after the molding. However, particular care must be taken of materials and their amounts used for the functional surface formation lest they run counter to the object of the present invention to produce biodegradable articles.
  • the molded articles prepared according to the present invention can find numerous applications in many fields.
  • the molded articles may be used as general household wares or daily necessities or applied to construction materials or packing materials.
  • the molded products with fortified functions can be applied where conventional wood, plastics, iron or ceramic materials are used.
  • the molded articles of the present invention can be used as feedstuff or fertilizers after their life spans.
  • the composition for molding articles in accordance with the present invention is environmentally friendly because its materials are natural products .
  • Another advantage of the present invention is that the composition of the present invention is economically favorable because its materials can be obtained with ease and are low-priced.
  • the method for molding articles in accordance with the present invention is very advantageous in the following aspects: First, the composition useful in the method is easily prepared. Additionally, the method is so simple as to reduce the production cost of the final products. Thus, the final products are price-competent.
  • the molded articles prepared according to the present invention if care is taken not to stain them, can be used repeatedly. Even when they are stained, the molded articles according to the present invention can be used many times if the stains are properly taken out.
  • the present invention which is directed to a composition and a molding method using the same, produces environmentally friendly articles which can at least partially solve the problems of environmental hormones and pollutants.
  • low-priced materials for the compositions of the present invention such as wheat flour, make the final products price- competent.
  • the molded articles of the present invention can be utilized as materials for other articles.
  • the molded articles of the present invention are easily degraded by microorganisms without producing any harmful materials to the body and the environment.
  • the molded articles prepared from the molding composition by the method according to the present invention can be applied to disposable supplies such as ramen containers, trays, dishes, chopsticks, toothbrushes, razor handles, knives, spoons, hamburger containers, ice cream containers, ice cream sticks, ice cream spoons, stirring sticks for coffee, toothpicks, forks, straws, golf tees, and food vessels; reusable supplies such as meal trays, salvers, vessels, cups, gourds, restaurant vessels, dishes, and packing materials; daily necessities such as coat hangers, dustbins, picture frames, toys, vases, pencil cases, cases for spoons and chopsticks, ash trays, wall/table clock cases, disc boxes, knitting needles, and spectacles frames; office supplies such as ball pen cases, pencil cases, scotch tape frames, furniture subsidiaries, office desks, clothes chests, and bookshelves; materials for interior and

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Abstract

La présente invention concerne une composition de moulage d'articles et un procédé de préparation d'articles moulés utilisant cette composition. Cette composition contient: 90 parties en poids maximum de poudre de particules comme support et 20 parties en poids maximum de composés contenant au moins un composant sélectionné parmi hydroxyle (R-OH), ester (R-CO2R'), acide carboxylique (R-CO2H), amide(R-CONH-R'), imides(R-CONHCO-R'), amine(R-NH2), anhydride(R-CO2CO-R'), acide phosphonique (R-PO3H2), acide sulfonique (R-SO4H) et mélamine ( R et R' représentant individuellement H, des composés organiques aliphatiques ou aromatiques, ou des composés organiques contenant les composants précités) comme adjuvant de moulage. En outre, cette composition peut contenir au moins un additif sélectionné parmi des liant de texture de moulage et des améliorants fonctionnels pour les articles moulés. Cet additif est utilisé à raison de 90 parties en poids maximum en fonction du poids de la composition. Par conséquent, cette composition est à la fois écologique car elle est à base de produits naturels, et favorable sur le plan économique puisque ses composants s'obtiennent facilement et à bas prix.
EP00955156A 1999-09-22 2000-08-30 Composition de moulage d'articles et procede de fabrication d'articles moules utilisant cette composition Withdrawn EP1232207A4 (fr)

Applications Claiming Priority (9)

Application Number Priority Date Filing Date Title
KR1019990041069A KR100338260B1 (ko) 1999-09-22 1999-09-22 용기 제조용 조성물 및 이를 이용한 용기 제조방법
KR9941069 1999-09-22
KR10-1999-0056132A KR100368048B1 (ko) 1999-12-09 1999-12-09 성형품 제조용 조성물 및 이를 이용한 성형품 제조 방법
KR9956131 1999-12-09
KR9956132 1999-12-09
KR10-1999-0056131A KR100368047B1 (ko) 1999-12-09 1999-12-09 성형품 제조용 조성물 및 이를 이용한 성형품 제조 방법
KR2000049850 2000-08-26
KR1020000049850A KR20020016679A (ko) 2000-08-26 2000-08-26 성형품 제조용 조성물 및 이를 이용한 성형품 제조방법
PCT/KR2000/000979 WO2001021696A1 (fr) 1999-09-22 2000-08-30 Composition de moulage d'articles et procede de fabrication d'articles moules utilisant cette composition

Publications (2)

Publication Number Publication Date
EP1232207A1 EP1232207A1 (fr) 2002-08-21
EP1232207A4 true EP1232207A4 (fr) 2005-01-19

Family

ID=27483392

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00955156A Withdrawn EP1232207A4 (fr) 1999-09-22 2000-08-30 Composition de moulage d'articles et procede de fabrication d'articles moules utilisant cette composition

Country Status (7)

Country Link
EP (1) EP1232207A4 (fr)
JP (1) JP2003510391A (fr)
CN (1) CN1384853A (fr)
AU (1) AU6739100A (fr)
BR (1) BR0014620A (fr)
MX (1) MXPA02002706A (fr)
WO (1) WO2001021696A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0131094D0 (en) * 2001-12-28 2002-02-13 Webber Peter J Improvements in or relating to golf accessories
KR102285461B1 (ko) * 2020-02-28 2021-09-03 이정훈 막대사탕

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0632386A (ja) * 1992-07-13 1994-02-08 Nissei Kk 生分解性発泡成形容器及びその製造方法
WO1996006886A1 (fr) * 1994-08-27 1996-03-07 Metraplast H. Jung Gmbh Materiau biodegradable a base de matieres premieres regenerees et son procede de fabrication
US5736209A (en) * 1993-11-19 1998-04-07 E. Kashoggi, Industries, Llc Compositions having a high ungelatinized starch content and sheets molded therefrom

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5320669A (en) * 1992-12-14 1994-06-14 Iowa State University Research Foundation, Inc. Cereal grain-based biodegradable thermoplastic compositions
US5288318A (en) * 1993-07-01 1994-02-22 The United States Of America As Represented By The Secretary Of The Army Cellulose acetate and starch based biodegradable injection molded plastics compositions and methods of manufacture
JP3008071B2 (ja) * 1995-03-03 2000-02-14 日本コーンスターチ株式会社 エステル化ビニルエステルグラフト重合澱粉
JPH09294482A (ja) * 1996-05-07 1997-11-18 Nippon Shokuhin Kako Co Ltd 生分解性育苗用ポット

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0632386A (ja) * 1992-07-13 1994-02-08 Nissei Kk 生分解性発泡成形容器及びその製造方法
US5736209A (en) * 1993-11-19 1998-04-07 E. Kashoggi, Industries, Llc Compositions having a high ungelatinized starch content and sheets molded therefrom
WO1996006886A1 (fr) * 1994-08-27 1996-03-07 Metraplast H. Jung Gmbh Materiau biodegradable a base de matieres premieres regenerees et son procede de fabrication

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
DATABASE CAPLUS [online] CHEMICAL ABSTRACTS SERVICE, COLUMBUS, OHIO, US; ANDO, SADAMASA ET AL: "Biodegradable foam containers", XP002303992, retrieved from STN Database accession no. 1994:326078 *
See also references of WO0121696A1 *

Also Published As

Publication number Publication date
BR0014620A (pt) 2002-06-18
MXPA02002706A (es) 2002-07-30
JP2003510391A (ja) 2003-03-18
EP1232207A1 (fr) 2002-08-21
AU6739100A (en) 2001-04-24
CN1384853A (zh) 2002-12-11
WO2001021696A1 (fr) 2001-03-29

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