CN1136050A - Decompositable material for package and method for producing food container - Google Patents
Decompositable material for package and method for producing food container Download PDFInfo
- Publication number
- CN1136050A CN1136050A CN96102131A CN96102131A CN1136050A CN 1136050 A CN1136050 A CN 1136050A CN 96102131 A CN96102131 A CN 96102131A CN 96102131 A CN96102131 A CN 96102131A CN 1136050 A CN1136050 A CN 1136050A
- Authority
- CN
- China
- Prior art keywords
- starch
- biodegradable material
- food container
- agent
- coupling agent
- 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
Links
Classifications
-
- 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
Abstract
A biodegradable material for package is made of starch, water, cellulose, water-soluble resin, hydroscopic agent, stabilizer, lubricant, foamer and foaming aid, as well as optional deoxidant, mildew inhibitor, whitening agent and coupling agent and may be made into food containers such as cup, dish, bowl, box by extrusion or injection. Said food container features preventing mildew and leakage, easy degradation and no pollution, and may be recovered as feed or organic fertilizer.
Description
The present invention relates to be used for the biodegradable material of object or material package and utilize this material to make the method for food container.
The disposable food packing container that uses is measured by fast food, fast food sparetime university at present, adopting plastics such as polystyrene is base material because it is difficult to decompose in physical environment, with after become the waste accumulation, become one of primary pollution source of city productive life environment, cause the attention of various countries the sixth of the twelve Earthly Branches.For overcoming this problem, No. 93115669.6, Chinese invention patent application on November 9th, 1994 open phytosynthesis food packaging film manufacture method and the packing material of producing with this method, this invention is the Semen Maydis powder with according to a certain ratio, sticky rice flour, quick-acting sparklets and distilled water are placed in the container and stir, stir after treating to add a certain proportion of edible Gelatinum oxhide and glycerine again after above-mentioned compound foams, put baking oven baking certain hour into after the raw material that is flow-like after stirring gone into mould, taking out the packing film that processes then from mould puts into by paraffin, soak in the solution that the polyethylene alcohol and water is formed, become the available food package box, after reclaiming, the packing material that adopts this invention to produce to be processed into animal feed or agricultural organic fertilizer, but this patent application does not provide the outward appearance and the physicochemical property of finished product, and production process is more, is difficult to raise the efficiency.Baking box baking certain hour takes out from mould then
The object of the invention provides a kind of biodegradable packing timber plastics, utilizes the existing efficient process that adopts the polystyrene plastic base material to make food container again, to replace plastic wrapping, decontamination easily as far as possible.
The invention provides a kind of is the packaging biodegradable material that main raw material constitutes with starch, it constitutes: starch is 100 o'clock by weight, water 50-70, Mierocrystalline cellulose 1-7, water soluble resin 6-18, moisture adsorbent 2-6, stablizer 0.5-2, whipping agent 0.3-2, blowing promotor 0.3-2.
During biodegradable material provided by the present invention constitutes, described starch can be corn, wheat or yam starch, described Mierocrystalline cellulose can be cellulose acetate, carboxymethyl cellulose, ethyl cellulose or methylcellulose gum, described water soluble resin can be polyethylene oxide, polyvinyl alcohol or Synolac, described moisture adsorbent can be propylene glycol or glycerol, described stablizer can be calcium stearate or Zinic stearas, described lubricant can be silicone oil or whiteruss, described whipping agent can be one (to a sulfonyl hydrazide) phenyl ether, p-toluene sulfonyl hydrazide or Cellmic C 121, described blowing promotor can be urea or sodium bicarbonate.
Also can add additive in the biodegradable material provided by the invention, starch is 100 o'clock by weight, and additive formula is: oxidation inhibitor 0-0.1, mould inhibitor 0-1, whitening agent 0-5, coupling agent 0-1.
Oxidation inhibitor can be two power butyl p-cresol, anti-bad blood acyl cetylate or Tenox PG in the described additive, and mould inhibitor can be calcium propionate, and whitening agent can be titanium dioxide, and coupling agent can be titanate coupling agent or silane coupling agent.
Utilize biodegradable material provided by the invention to make food container and can take extrusion molding mode or injection system.
Take the operation of extrusion molding mode to be:
(1) with described biodegradable material mixing and stirring, pinches and to be configured as to hand
Degree,
(2) above-mentioned raw materials adds forcing machine, forms sheet material or tubing by extrusion die,
Through between air cooling or water, press cooling, extruder temperature 100-160 ℃, machine
80-130 ℃ of head mould tool temperature,
(3) above-mentioned materials passes through traction, and is standby after the press polish after also can drawing,
(4) above-mentioned lay-by material passes through cold through vacuum forming or mold pressing post forming again
But, the oven dry, the sterilization, become required food container.Take the operation of injection system to be:
(1) with described biodegradable material mixing and stirring, pinches and to be configured as to hand
Degree,
(2) above-mentioned raw materials is sent into granulation in the tablets press, prilling temperature<100 ℃, granulation grain
Degree 2-5mm,
(3) particulate material is put into injector, by die forming,
(4) shaped material cooling, oven dry or seasoning, sterilization become required food product packets
Packaging container.
The product appearance quality and the sense organ that utilize biodegradable material of the present invention and the method for making food container to produce require to see Table 1.
Table 1 packaging vessel visual appearance, sense organ requirement
Sequence number | Project | Visual appearance and sense organ requirement |
????1 | Shape and quality | Shape is enriched, symmetry, evenly, flawless, cut, perforation and breakage |
????2 | Color and luster | White or oyster white |
????3 | Surface appearance | No greasy dirt, floating dust, mildew, foreign matter |
????4 | Smell | Slightly food, sugared fragrance |
According to the mensuration and the GB3681-83 plastics natural climate exposure test method of GB6344-86 flexible foam polymkeric substance tensile strength and extension at break degree, the product physicochemical property that utilizes the present invention to produce sees Table 2.
Utilize different shape containers such as the present invention's energy scale operation cup, dish, bowl, box, on production efficiency and physicochemical property, can replace plastic packaging containers fully, and mildew-resistant, enough antiseep abilities are arranged, recyclable before easily degraded, pollution-free, the degraded as feed or organic fertilizer second stage employ.
Table 2 packaging vessel physicochemical property
Sequence number | Project | Physicochemical property |
????1 | Draw and stretch intensity | ≥1.5MPa |
????2 | The extension at break degree | ≤2% |
????3 | The heatproof situation | 80~100 ℃ are not had obviously distortion |
????4 | Degradation time | At 25 ℃, under temperature 80% condition, degraded start-stop 7-60 days |
????5 | Water resisting property | Soaked 2 hours in 80~100 ℃ of water, do not have obviously distortion |
Below provide three groups of actual proportionings of biodegradable material, all by weight.
Proportioning 1:
W-Gum 100, water 60, carboxymethyl cellulose 5, polyvinyl alcohol 16, glycerol 4, calcium stearate 1.4, whiteruss 2, to (to an a sulfonyl hydrazide) phenyl ether (OBSH) 0.6, urea 0.5, ditertbutylparacresol (BHT) 0.04, calcium propionate 0.04, titanium dioxide 0.02.
Proportioning 2:
Wheat starch 100, water 55, ethyl cellulose 6, polyethylene oxide 14, propylene glycol 5, Zinic stearas 1.4, silicone oil 1.5, Cellmic C 121 (AC) 0.8, sodium bicarbonate 0.4, anti-bad blood acyl cetylate 0.03, silane coupling agent 0.3.
Proportioning 3:
Yam starch 100, water 65, cellulose acetate 5.5, Synolac 12, glycerol 4.5, calcium stearate 1.5, whiteruss 1.8, tolysulfonyl (TSH) 0.7, urea 0.6.Adopt the processing requirement and the process of extrusion molding mode and said ratio 1 to be:
The raw and auxiliary material of said ratio 1 is pulverized, use the dough mixing machine mixing and stirring, dough mixing machine power is 1.5KW, 24 rev/mins of rotating speeds, production efficiency 25kg/ hour, the raw material that stirs is sent into forcing machine and is squeezed into width 400mm, and the sheet material of thickness 1~2mm, forcing machine can adopt SJ-65 * 25 single-screw extruders, screw diameter 65mm, length-to-diameter ratio 25: 1, screw speed 12-120 rev/min, power of motor 30KW, 100-110 ℃ of forcing machine feed zone temperature, 120-130 ℃ of compression moulding section temperature, 140-155 ℃ of homogenizing zone temperature, 100-120 ℃ of extrusion die temperature.10 minutes rear haulages of the sheet material air cooling of extruding cut into 600mm length so that collect.Can adopt plastics vacuum type shaper when collecting stand-by material secondary moulding, power 8-11KW, moulding degree of depth 120mm, attached vacuum pump operating pressure 4k8/cm
2, 180 liters/minute of attached air compressor machines, pressure 8-16k8/cm
2, the food product containers that forms is a bowl-type, air-cooled 3 minutes, and during 20 ℃ of envrionment temperatures, seasoning 2-3 hour, with uviolizing sterilization 5-10 minute.Adopt the processing requirement and the process of injection system and said ratio 3 to be:
The raw and auxiliary material of said ratio 3 is pulverized; with aforementioned dough mixing machine stir the back granulation; tablets press also can adopt aforementioned single-screw extruder to change the extrusion die granulation; forcing machine and extrusion die need not to heat, and the particle that causes is cylindrical, and diameter and height are 3mm; particle is sent into injector after the granulation; select injector XS-ZY125 type for use, machine barrel is heated first section 80 ℃, second section 130 ℃ for three sections; the 3rd section 150 ℃; mould is heated 80-100 ℃, and injection pressure 100-120mPa is injected into the bowl-type food product containers; air-cooled 3 minutes; during 20 ℃ of envrionment temperatures, seasoning 2-3 hour, ultra-violet sterilization 5-10 minute.
Claims (6)
1. one kind is the packaging biodegradable material that main raw material constitutes with starch, it is characterized by: starch is 100 o'clock by weight, water 50-70, Mierocrystalline cellulose 1-7, water soluble resin 6-18, moisture adsorbent 2-6, stablizer 0.5-2, lubricant 0.5-2, whipping agent 0.3-2, blowing promotor 0.3-2.
2. biodegradable material as claimed in claim 1, it is characterized by described starch and can be corn, wheat or yam starch, described Mierocrystalline cellulose can be cellulose acetate, carboxymethyl cellulose, ethyl cellulose or methylcellulose gum, described water soluble resin can be polyethylene oxide, polyvinyl alcohol or Synolac, the described humectant that draws can be propylene glycol or glycerol, described stablizer can be calcium stearate or Zinic stearas, described lubricant can be silicone oil or whiteruss, described whipping agent can be one (to a sulfonyl hydrazide) phenyl ether, p-toluene sulfonyl hydrazide or Cellmic C 121, described blowing promotor can be urea or sodium bicarbonate.
3. biodegradable material as claimed in claim 1 or 2 is characterized in that adding additive in this material, and starch is 100 o'clock by weight, and additive formula is: oxidation inhibitor 0-0.1, mould inhibitor 0-1, whitening agent 0-5, coupling agent 0-1.
4. biodegradable material as claimed in claim 3, it is characterized in that oxidation inhibitor can be ditertbutylparacresol in the described additive, anti-bad blood acyl cetylate or Tenox PG, mould inhibitor can be calcium propionate, whitening agent can be titanium dioxide, and coupling agent can be titanate coupling agent or silane coupling agent.
5. utilize the described biodegradable material of claim 1 to make the method for food container, it is characterized in that:
(1) described material mixing is stirred, pinching to hand can degree of being configured as,
(2) above-mentioned raw materials adds forcing machine, forms sheet material or tubing, warp by extrusion die
Air cooling or water cool off indirectly, extruder temperature 100-160 ℃, head
Die temperature 80-130 ℃,
(3) above-mentioned materials passes through traction, and is standby after the press polish after also can drawing,
(4) above-mentioned materials is through vacuum forming or mold pressing post forming, again through overcooling, baking
Do or seasoning, sterilization, become required food container.
6. select for use the described biodegradable material of claim 1 to make the method for food container, it is characterized in that:
(1) described material mixing is stirred, pinching to hand can degree of being configured as,
(2) above-mentioned raw materials is sent into granulation in the tablets press, prilling temperature<100 ℃, granulation grain
Degree 2-5mm,
(3) particulate material is put into injector, by die forming,
(4) shaped material cooling, oven dry or seasoning, sterilization become required food product packets
Packaging container.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN96102131A CN1051564C (en) | 1996-02-06 | 1996-02-06 | Decompositable material for package and method for producing food container |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN96102131A CN1051564C (en) | 1996-02-06 | 1996-02-06 | Decompositable material for package and method for producing food container |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1136050A true CN1136050A (en) | 1996-11-20 |
CN1051564C CN1051564C (en) | 2000-04-19 |
Family
ID=5117410
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN96102131A Expired - Fee Related CN1051564C (en) | 1996-02-06 | 1996-02-06 | Decompositable material for package and method for producing food container |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN1051564C (en) |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1102367C (en) * | 1998-05-12 | 2003-03-05 | 吉步华 | Production method of pure natural fast food utensils and its product |
CN100368465C (en) * | 2003-05-28 | 2008-02-13 | 三泽住宅株式会社 | Foamed material, method for production thereof, cushioning material, thermal insulating material and structure of wall of building |
CN100383186C (en) * | 2003-10-31 | 2008-04-23 | 丁少忠 | Dehumidifying agent for plastic shaping and its preparing method |
CN1740063B (en) * | 2004-08-27 | 2010-05-26 | 丁少忠 | Biodegradable plastic container and its making process |
CN101039849B (en) * | 2004-08-11 | 2010-12-08 | 东洋制罐株式会社 | Biodegradable cap excellent in cap-openability, and container with biodegradable cap |
CN101942117A (en) * | 2010-09-25 | 2011-01-12 | 梁靖 | Starch-based fully degraded packaging material and preparation method thereof |
CN102276878A (en) * | 2011-07-19 | 2011-12-14 | 林世旺 | Degradable cushion packaging composite material and preparation method thereof |
CN102492228A (en) * | 2011-12-07 | 2012-06-13 | 山东科技大学 | Foamed rubber and preparation method thereof |
CN102617945A (en) * | 2011-01-27 | 2012-08-01 | 陈嘉荣 | Foamed plastic packing box and preparation method thereof |
CN104080713A (en) * | 2011-10-11 | 2014-10-01 | 凯尔包装有限责任公司 | Biodegradable PVC film for pharmaceutical packaging and a process for its preparation |
CN105153561A (en) * | 2015-07-27 | 2015-12-16 | 合肥忠豪新材料有限公司 | Environment-friendly type packaging material and preparation method thereof |
CN106146994A (en) * | 2015-03-27 | 2016-11-23 | 蔡玉环 | Sterilization and deodorization foaming material manufacture method |
CN106280154A (en) * | 2016-08-04 | 2017-01-04 | 安徽嘉木橡塑工业有限公司 | A kind of uvioresistant packaging material and preparation method thereof |
CN109135252A (en) * | 2018-06-27 | 2019-01-04 | 安徽嘉明新材料科技有限公司 | A kind of degradable TPU membrane and its preparation process |
CN109235124A (en) * | 2018-09-07 | 2019-01-18 | 浙江上峰包装新材料有限公司 | A kind of fresh-keeping flavouring wrapping paper of microsponge type humectation and preparation method of environment-friendly degradable |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100335544C (en) * | 2004-12-20 | 2007-09-05 | 陈明忠 | Biological degradatable plastic sheet material and its preparation method |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4613627A (en) * | 1982-12-13 | 1986-09-23 | Usg Acoustical Products Company | Process for the manufacture of shaped fibrous products and the resultant product |
CN1039648C (en) * | 1991-08-01 | 1998-09-02 | 诺瓦蒙特股份公司 | Biodegradable polymeric compositions based on starch and thermoplastic polymers |
JPH0615753A (en) * | 1992-07-02 | 1994-01-25 | Toppan Printing Co Ltd | Production of pulp foamed buffer material |
US5352709A (en) * | 1993-01-29 | 1994-10-04 | International Technology Management Associates, Ltd. | Algal plastics |
JPH06286771A (en) * | 1993-03-29 | 1994-10-11 | Kazuyuki Akibayashi | Cushioning material and manufacture thereof |
CN1095075A (en) * | 1994-04-28 | 1994-11-16 | 上海华一经济科技实业公司 | High water absorbency plastic foam and preparation method |
CN1058736C (en) * | 1994-05-27 | 2000-11-22 | 北京市星辰现代控制工程研究所 | Preparing method for biodegradation compound and its use |
-
1996
- 1996-02-06 CN CN96102131A patent/CN1051564C/en not_active Expired - Fee Related
Cited By (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1102367C (en) * | 1998-05-12 | 2003-03-05 | 吉步华 | Production method of pure natural fast food utensils and its product |
CN100368465C (en) * | 2003-05-28 | 2008-02-13 | 三泽住宅株式会社 | Foamed material, method for production thereof, cushioning material, thermal insulating material and structure of wall of building |
CN100383186C (en) * | 2003-10-31 | 2008-04-23 | 丁少忠 | Dehumidifying agent for plastic shaping and its preparing method |
CN101039849B (en) * | 2004-08-11 | 2010-12-08 | 东洋制罐株式会社 | Biodegradable cap excellent in cap-openability, and container with biodegradable cap |
CN1740063B (en) * | 2004-08-27 | 2010-05-26 | 丁少忠 | Biodegradable plastic container and its making process |
CN101942117A (en) * | 2010-09-25 | 2011-01-12 | 梁靖 | Starch-based fully degraded packaging material and preparation method thereof |
CN101942117B (en) * | 2010-09-25 | 2012-11-14 | 梁靖 | Starch-based fully degraded packaging material and preparation method thereof |
CN102617945B (en) * | 2011-01-27 | 2014-03-12 | 陈嘉荣 | Foamed plastic packing box and preparation method thereof |
CN102617945A (en) * | 2011-01-27 | 2012-08-01 | 陈嘉荣 | Foamed plastic packing box and preparation method thereof |
CN102276878A (en) * | 2011-07-19 | 2011-12-14 | 林世旺 | Degradable cushion packaging composite material and preparation method thereof |
CN104080713A (en) * | 2011-10-11 | 2014-10-01 | 凯尔包装有限责任公司 | Biodegradable PVC film for pharmaceutical packaging and a process for its preparation |
CN102492228B (en) * | 2011-12-07 | 2013-08-21 | 山东科技大学 | Foamed rubber and preparation method thereof |
CN102492228A (en) * | 2011-12-07 | 2012-06-13 | 山东科技大学 | Foamed rubber and preparation method thereof |
CN106146994A (en) * | 2015-03-27 | 2016-11-23 | 蔡玉环 | Sterilization and deodorization foaming material manufacture method |
CN105153561A (en) * | 2015-07-27 | 2015-12-16 | 合肥忠豪新材料有限公司 | Environment-friendly type packaging material and preparation method thereof |
CN106280154A (en) * | 2016-08-04 | 2017-01-04 | 安徽嘉木橡塑工业有限公司 | A kind of uvioresistant packaging material and preparation method thereof |
CN109135252A (en) * | 2018-06-27 | 2019-01-04 | 安徽嘉明新材料科技有限公司 | A kind of degradable TPU membrane and its preparation process |
CN109135252B (en) * | 2018-06-27 | 2020-11-03 | 安徽嘉明新材料科技有限公司 | Degradable TPU film and preparation process thereof |
CN109235124A (en) * | 2018-09-07 | 2019-01-18 | 浙江上峰包装新材料有限公司 | A kind of fresh-keeping flavouring wrapping paper of microsponge type humectation and preparation method of environment-friendly degradable |
CN109235124B (en) * | 2018-09-07 | 2020-09-01 | 浙江上峰包装新材料有限公司 | Environment-friendly degradable micro-sponge type moisturizing, fresh-keeping and aroma-enhancing packaging paper and preparation method thereof |
Also Published As
Publication number | Publication date |
---|---|
CN1051564C (en) | 2000-04-19 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN1051564C (en) | Decompositable material for package and method for producing food container | |
US5035930A (en) | Biodegradable shaped products and the method of preparation thereof | |
US5043196A (en) | Biodegradable shaped products and the method of preparation thereof | |
US5153037A (en) | Biodegradable shaped products and the method of preparation thereof | |
EP0376201B1 (en) | Biodegradable shaped products and the method of preparation thereof | |
EP0863942B1 (en) | Biodegradable, grain protein-based solid articles and forming methods | |
CN101400738B (en) | Collagen powder and collagen-based thermoplastic composition for preparing conformed articles | |
US4863655A (en) | Biodegradable packaging material and the method of preparation thereof | |
EP3508529B1 (en) | Water-soluble shopping bag and preparation method therefor | |
EP1270659B1 (en) | Aliphatic polyester composition and flexible products | |
WO1997019988A9 (en) | Biodegradable, grain protein-based solid articles and forming methods | |
CN101235164B (en) | Special-purpose material for whole biological degradation footwear material and preparation method thereof | |
US6805823B2 (en) | Resilient biodegradable packaging materials | |
JP4767951B2 (en) | Low temperature molding method for producing solid biodegradable material | |
KR20080114798A (en) | Collagen powder and collagen-based thermoplastic composition por preparing conformed articles | |
JP2000119431A (en) | Biodegradable foam by use of food refuse or garbage and manufacture thereof | |
JP2001200084A (en) | Cellulose acetate based resin foam with biodegradability and also excellent mechanical property and heat moldability, and cellulose acetate based resin foam molded article with biodegradability and also excellent mechanical property and dimensional stability | |
CN102408588B (en) | Completely biodegradable resin made of non-staple grain plant modified starch and preparation method thereof | |
EP0375831A1 (en) | Biodegradable shaped products and the method of preparation thereof | |
US20220371237A1 (en) | Organic polymer processing | |
RU2318006C1 (en) | Biologically degradable thermoplastic composition with using of rye flour | |
EP1409224B1 (en) | Tubular films formed from cellulose/protein blends | |
CN112060454A (en) | Production line and process for biomass full-degradable disposable lunch box | |
RU2693776C1 (en) | Composition for producing biodegradable polymer film based on natural materials | |
EP1651421A2 (en) | Process for production of starch-based thermoplastic materials |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
C19 | Lapse of patent right due to non-payment of the annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |