Classifications

• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
  • C08L3/00—Compositions of starch, amylose or amylopectin or of their derivatives or degradation products
  • C08L3/02—Starch; Degradation products thereof, e.g. dextrin
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65D—CONTAINERS 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
  • B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
  • B65D65/38—Packaging materials of special type or form
  • B65D65/46—Applications of disintegrable, dissolvable or edible materials
  • B65D65/466—Bio- or photodegradable packaging materials
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
  • C08L97/00—Compositions of lignin-containing materials
  • C08L97/02—Lignocellulosic material, e.g. wood, straw or bagasse
• • 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
  • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
  • Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
  • Y02A40/90—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in food processing or handling, e.g. food conservation
• • 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

Definitions

• This invention relates to composition and method for preparing a mixture for shape- bodies to allow uniform dispersion of fiber component throughout the entire matrix with no use of high viscosity fluid and with much less energy consumed for mixing.
• the present invention relates to method for dispersing fiber uniformly within starch- based composition for shape-bodies. Moreover, this invention presents a significant energy reduction resulting in minimizing the cost of production to be commercially competitive.
• Andersen and Hodson in attempt to disperse fiber uniformly within the starch-bound cellular matrix use a two-step mixing process, where a pre-blended mixture is formed by gelating a portion of the starch-based binder or other thickening agent in water to form a liquid phase having high yield stress into which the fibers are attempted to substantially uniformly disperse. Thereafter, the remaining starch-based binder, water, and other components such as mold-release agents, inorganic fillers, rheology-modifying agents, plasticizers, integral coating or sealing materials, and dispersants, are added to the pre- blended mixture to form a moldable starch-based composition.
• a pre-blended mixture is formed by gelating a portion of the starch-based binder or other thickening agent in water to form a liquid phase having high yield stress into which the fibers are attempted to substantially uniformly disperse.
• the remaining starch-based binder, water, and other components such as mold-release agents, inorganic fillers,
• Tanaka U.S. Patent Application Publication No. U.S.2005/0158541 tried using the water soluble polysaccharide into which the plant fiber powder is dispersed.
• the plant fiber material 60-200 mesh
• His invention mixes starch powder, gummy matter powder and water to form plant fiber molding material ready for injection molding.
• the plant fiber molding material is a moisturized powder and has no flowability until it is injected from the nozzle into the mold. High temperature controlled at 60 to 130° C is therefore needed to gelatinize the starch and allowing the flow of the material to fill up the mold.
• the method for preparing a homogeneous biodegradable mixture is described for production of shape-bodies. Reinforce fillers are needed to increase strength of the containers to make it commercially acceptable. Fibers from various natural sources especially those waste from varieties of manufacturing are applicable as filler. Fibrous materials used is the waste obtained from bamboo article manufacture. Long thin fibers are obtained. The treatment is boiling the fibers in water for 20 minutes at pH 8 where supernatant is decanted to get rid of chlorophyll. Fibers are further ground to preferable length of 2-4 mm. The treated fibers were mixed with all other ingredients in a rotor, spinning at a speed 1,800-2,000 rpm at ambient temperature for 5-10 minutes. Starch particles and other ingredients penetrate and mix well with the fibrous materials.
• the present invention described a method for mixing the ingredients for forming biodegradable shape bodies with natural fibers to obtain a homogeneous mixture with virtually no clumping of the fiber components throughout the matrix.
• the mixture is ready for further processing.
• a great additional advantage is a considerable long shelf-life of the dry mix up to 6 months before being kneaded with appropriate amount of water (0.5-1.0 fold). This is not possible by all the mixtures described in the prior arts using liquid dispersants which, in addition, is not possible for even a short time of storage including taking too much room if stored.
• the natural fibers used to increase the strength of the shape- bodies can be waste from manufactures such as furniture and wood or food manufactures, eg. fruit pulp , fruit skin, rice bran, nutshell, cassava pulp, and etc.
• manufactures such as furniture and wood or food manufactures, eg. fruit pulp , fruit skin, rice bran, nutshell, cassava pulp, and etc.
• Any fibers having cellulose 40 % and up is most desirable, where hemicelluloses and extraneous substances may act as binder for fibers within the continuous matrix. Fibers are obtained by longitudinal abrasion through grinding of the bamboo waste from manufacturing which otherwise needs to be burnt away and worsens the global warming problems.
• Fibers are boiled in water for 20 minutes at pH 8 and supernatant is decanted thus getting rid of chlorophyll and pigments.
• the fibers with moisture of 20-30 % wt are further ground to a final length of 2-4 mm having moisture of 8-12%wt.
• the treated fibers mix well with all other ingredients in a rotor, spinning at a speed 1,800-2,000 rpm at ambient temperature for 5-10 minutes.
• Example 1 Composition for shape bodies (% by weight)
• Starch can be those prepared from cassava, rice, glutinous rice, sweet potato, corn, potato, sorghum or sago, either singly or as mixture, in form of flour or starch or modified starch.
• Plasticizers are selected from the following groups consisting of polyols which are glycerol or sorbitol, or saccharides which are sugar, glucose, fructose, glucose syrup and honey; or lipids or their derivatives which are fatty acid, fatty acid esters, monoglycerides, diglycerides, distilled acetylated monoglyceride or phospholipid, which may be used singly or as mixture.
• Reinforcing filler are selected from the groups consisting of natural fibrous materials such as fibers from bamboo, or grasses of family Poaceae or Cyperaceae, cassava pulp and inert porous powder such as limestone, diatomaceous earth, bentonite, zeolite, talcum and may be used singly or as mixture.
• Binder used is selected from the following groups consisting of hydrocoUoids which are alginate, gum, agar, carrageenan and konjak flour, which may be used singly or as mixture.
• Alkali or salt is selected from calcium hydroxide, sodium hydroxide, potassium hydroxide, calcium carbonate, sodium carbonate, potassium carbonate, ammonium carbonate, sodium bicarbonate and ammonium bicarbonate, which may be used singly or as mixture added to make the pH of the mixture close to neutral or slightly alkaline.
• Continuous matrix of the shape bodies is starch or flour in the range of 30-70% where cassava pulp from manufacturing waste can substitute these starch or flour which helps decreasing the cost of production.
• the present invention offers an uncomplicated process for dispersion of the fibrous materials throughout a continuous matrix of the shape bodies with no need of expensive or sophisticate equi ments and minimizing the operating cost in addition to minimizing the inconsistency occurred during the production process thus allowing the manufacturing of the shape-bodies to be best and most efficient.
• the mixture can be stored using minimum space at ambient temperature until use having as long shelf-life up to at least 6 months which is very helpful to cut cost of production, where storage for a certain period of time is otherwise impossible by those using liquid dispersants.
• the strengthened containers or articles having fibrous materials dispersed uniformly produced by the presently disclosed invention do not contain any synthetic non-degradable polymers or resin at all. They are therefore friendly in the natural environment as being biodegraded to disperse and become a component of soil. Thus, they can be disposed of as ordinary organic wastes with no violation of the container recycle law.
• the present invention provides a method for preparing a homogeneous biodegradable mixture for shape-bodies having fibers of appropriate length dispersed uniformly throughout the continuous matrix. The process consumes minimum time and energy but yields products of best properties especially strength.
• the present invention may be embodied in other specific forms without departing from the scope of this invention by one of ordinary skill in the art. It is accordingly intended that all matter contained in the above description be interpreted as descriptive rather than in a limiting sense.

Landscapes

• Chemical & Material Sciences (AREA)
• Engineering & Computer Science (AREA)
• Polymers & Plastics (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Health & Medical Sciences (AREA)
• Organic Chemistry (AREA)
• Medicinal Chemistry (AREA)
• Life Sciences & Earth Sciences (AREA)
• Mechanical Engineering (AREA)
• Biodiversity & Conservation Biology (AREA)
• Wood Science & Technology (AREA)
• Materials Engineering (AREA)
• Compositions Of Macromolecular Compounds (AREA)
• Processes Of Treating Macromolecular Substances (AREA)
• Biological Depolymerization Polymers (AREA)
• Reinforced Plastic Materials (AREA)
• Artificial Filaments (AREA)

Priority Applications (10)

Applications Claiming Priority (1)

Publications (1)

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Family Applications (1)

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Citations (12)

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• 2010
  • 2010-07-02 CA CA2803040A patent/CA2803040C/en not_active Expired - Fee Related
  • 2010-07-02 KR KR1020137002227A patent/KR20130040231A/ko not_active Ceased
  • 2010-07-02 BR BR112012033627A patent/BR112012033627A2/pt not_active IP Right Cessation
  • 2010-07-02 RU RU2013103756/12A patent/RU2542558C2/ru not_active IP Right Cessation
  • 2010-07-02 EP EP10738049.5A patent/EP2588519A1/en not_active Withdrawn
  • 2010-07-02 US US13/806,945 patent/US20130199408A1/en not_active Abandoned
  • 2010-07-02 AU AU2010356317A patent/AU2010356317B2/en not_active Ceased
  • 2010-07-02 CN CN201080067819XA patent/CN102985475A/zh active Pending
  • 2010-07-02 WO PCT/TH2010/000021 patent/WO2012002914A1/en not_active Ceased
  • 2010-07-02 JP JP2013518346A patent/JP2013531112A/ja active Pending

Patent Citations (12)

Non-Patent Citations (1)

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