WO2002088245A1 - Method for the production of biodegradable packaging and moulded bodies - Google Patents
Method for the production of biodegradable packaging and moulded bodies Download PDFInfo
- Publication number
- WO2002088245A1 WO2002088245A1 PCT/EP2002/004590 EP0204590W WO02088245A1 WO 2002088245 A1 WO2002088245 A1 WO 2002088245A1 EP 0204590 W EP0204590 W EP 0204590W WO 02088245 A1 WO02088245 A1 WO 02088245A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- starch
- additives
- packaging
- production
- biodegradable
- Prior art date
Links
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
-
- 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
- C08L3/04—Starch derivatives, e.g. crosslinked derivatives
Definitions
- the invention relates to a process for the production of biodegradable packaging and molded articles, in particular consisting of biodegradable material and renewable raw materials, and packaging and foils produced by this process.
- Biodegradable packaging or molded articles are used to protect the environment, for example in the area of disposable packaging, the fast food area, agriculture and forestry, horticulture and other areas of daily use.
- such products are manufactured on the basis of fiber-containing materials, such as, for example, the lignocellulosic materials, paper or paper waste.
- the fiber lengths are given as about 1 mm.
- Latex, starch, water glass or mixtures thereof are used as binders.
- this procedure requires a large amount of water and energy.
- a process for the production of molded articles with a barrier layer both consisting of biodegradable material, is known.
- the impregnation leading to the barrier function acts on the molded body and is produced in the baking process.
- the viscous mixtures used usually contain biodegradable fiber material of different fiber lengths, water and starch.
- the molded body is rendered hydrophobic with cellulose acetate or cellulose acetate propionate without plasticizers or separately with a film coating based on polyesteramide, polyester or polylactic acid. This way of hydrophobing or impregnation is only successful if the molded body is treated during or after shaping.
- containers for the storage, distribution, packaging and / or portioning of foodstuffs or other products are produced from aggregates with organic binders, water, fibers, glass balls, air bubbles in the mixtures, starch or starch-containing products,
- Packaging materials made from natural fiber materials are described in DE 4240 174. However, these materials are not optimally manageable in the context of environmentally friendly disposal, as they are for the Production of the binding agents necessary to interfere with the biodegradability. Add to that the pressure. and heat treatment make the manufacturing process uneconomical.
- a packaging material for disk-shaped storage media is described in German utility model DE 295 05 432.8. It is a cardboard packaging.
- Shaped bodies from pressed compost and its production are described in DE 195 07 928. Because of the basic material used (con ⁇ ost material), such packaging materials can only be used in a very narrow range, for example in the areas of agriculture, forestry and horticulture.
- EP 0 545 277 describes biodegradable packaging made of paper, paper products and celluloses. These packaging materials are relatively rough in their structure and are not suitable for all packaging processes.
- biodegradability among other things, a controllability of the swelling and the solubility of the molded bodies / packagings and their degradation products.
- Pre-gelatinized, cross-linked starch is in the document DE 19627498 as
- Crosslinking with PE foam or other organic materials is disclosed, for example, in the utility models DE 29509870, DE 29902635, DE 29903664.
- pure starch or starch derivatives are used for crosslinking, these crosslinking generally being carried out by using further polymers which can reduce the degree of biodegradability.
- the invention is therefore based on the object of specifying a method for producing biodegradable packagings and moldings which can be controlled in their degradation behavior, while avoiding the disadvantages of the prior art. According to the invention, this object is achieved by the characterizing features of the first claim. advantageous Refinements are specified by the subordinate claims.
- the essence of the invention is that a substance mixture of starch, water, separating and thickening agents, natural fibers, natural fillers and pre-crosslinked starch derivatives from vegetable meal as additives are thermally bonded by baking processes, injection molding or extruders.
- pre-crosslinked additives in the form of the special vegetable flours leads to a reduction in the water absorption capacity and to an increase in the surface evaporation resistance and dimensional stability. The best results can be achieved with a high degree of networking.
- the advantage of the method according to the invention is that the shaped bodies produced by means of this method are suitable for packaging a wide variety of products, for example in sandwich or other construction, and consist primarily of renewable and biodegradable raw materials, so that environmentally friendly disposal of these shaped bodies is possible, whereby the biodegradability can be controlled by adding the additives according to the invention.
- the molded articles produced with the method according to the invention comprise as packaging materials the favorable properties of cardboard packaging and partially foamed plastic packaging, are easily reusable due to the controllable biodegradability and at the same time are readily biodegradable.
- Fig. 3 the degradation behavior of cross-linked or uncross-linked starch materials based on cereal flour.
- a mixture of substances consisting of starch, water, separating and thickening agents, natural fibrous materials, and additives in the form of pre-crosslinked starch derivatives from cereal flours is intimately combined by baking or injection molding processes.
- the molded body 2 is formed within the metallic geometric tool mold 1 with opposing molding and baking surfaces 3 with simultaneous mixing and crosslinking of the substance mixture the thermal treatment on the mold and baking surfaces (3) a molded body outer skin (4) is formed with an increased degree of crosslinking and polymerization.
- the degree of crosslinking and polymerization decreases towards the inside of the molded body 2 and increasingly changes into a blistered structure (5).
- the crosslinking and polymerization planes (6, 7) run, as shown in the figure, at right angles to one another.
- the substance mixture can be composed, for example, as follows:
- Starch also in the form of vegetable mixtures with a defined starch content approx. 25-35%
- the amount of which preferably amounts to 5.5 to 30% of the total amount of the mixture of substances, cereal or other starch and protein-containing vegetable meal crosslinked by etherification or other processes are used.
- These products are pre-crosslinked by gentle alkylation and / or etherification and / or esterification and thus inhibition of quenching.
- the biodegradability is guaranteed and can be controlled by the type of derivatization.
- These additives have a water absorption capacity that is reduced by up to 85% (optimally between 50 and 80%). Because of this property, there is a delayed degradation of the shaped bodies produced according to the method according to the invention.
- the degree of crosslinking of the additives is 10 "6 to 10 " 2 , preferably 10 "5 to 10 " 3 .
- the optimal degradation properties of the shaped bodies are given with an average degree of crosslinking of the additives (between the starch and the starch derivatives, between the proteins and the starch or between the proteins of the cereal flours).
- crosslinked additives can also be subjected to the usual processes, such as injection molding or extrusion, within the substance mixture.
- FIG. 2 shows the behavior of the molded bodies manufactured by means of the method according to the invention with regard to the
- FIG. 3 shows the behavior of crosslinked and uncrosslinked starchy materials based on cereal flour.
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10291848T DE10291848D2 (en) | 2001-04-26 | 2002-04-25 | Process for the production of biodegradable packaging and shaped articles |
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10120560 | 2001-04-26 | ||
DE10120560.0 | 2001-04-26 | ||
DE10121277 | 2001-05-01 | ||
DE10121277.1 | 2001-05-01 | ||
DE10121280.1 | 2001-05-01 | ||
DE10121280 | 2001-05-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002088245A1 true WO2002088245A1 (en) | 2002-11-07 |
Family
ID=27214408
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2002/004590 WO2002088245A1 (en) | 2001-04-26 | 2002-04-25 | Method for the production of biodegradable packaging and moulded bodies |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE10291848D2 (en) |
WO (1) | WO2002088245A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005012421A1 (en) * | 2003-07-31 | 2005-02-10 | Alonid Aktiengesellschaft | Biodegradable auxiliary agent for concrete construction, a method for the production and the use thereof |
WO2009099607A1 (en) * | 2008-02-01 | 2009-08-13 | L'oreal | Biodegradable moisture-impermeable packages for consumer goods |
DE102016004464A1 (en) | 2016-04-15 | 2017-10-19 | Martin-Luther-Universität Halle-Wittenberg | Packaging of milk in dissolvable portion capsules and methods for their production by ionic hydrocolloid interactions |
DE102016004463A1 (en) | 2016-04-15 | 2017-10-19 | Martin-Luther-Universität Halle-Wittenberg | Packaging of milk in dissolvable portion capsules and process for their preparation by crystallization |
CN113583466A (en) * | 2021-07-22 | 2021-11-02 | 湖北嘉鑫环保新材料科技有限公司 | Moderate cross-linked starch biodegradable plastic and preparation method thereof |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0474095A1 (en) * | 1990-09-03 | 1992-03-11 | Bühler Ag | Composition and process for forming biodegradable consumer products |
US5153037A (en) * | 1988-12-30 | 1992-10-06 | National Starch And Chemical Investment Holding Corporation | Biodegradable shaped products and the method of preparation thereof |
CN1102371A (en) * | 1993-11-04 | 1995-05-10 | 刘定太 | Multifunction artificial wood |
JPH08134266A (en) * | 1994-11-10 | 1996-05-28 | Shigemasa Suzuki | Water-resistant plant polymer composition and its production |
CN1127276A (en) * | 1995-11-08 | 1996-07-24 | 何顺伦 | Biological degraded plant fibre package material and producing method |
WO1996023026A1 (en) * | 1995-01-26 | 1996-08-01 | Rapido Waagen- Und Maschinenfabrik Gmbh | Method of producing shaped bodies, in particular for packaging, and shaped bodies |
-
2002
- 2002-04-25 DE DE10291848T patent/DE10291848D2/en not_active Expired - Fee Related
- 2002-04-25 WO PCT/EP2002/004590 patent/WO2002088245A1/en not_active Application Discontinuation
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5153037A (en) * | 1988-12-30 | 1992-10-06 | National Starch And Chemical Investment Holding Corporation | Biodegradable shaped products and the method of preparation thereof |
EP0474095A1 (en) * | 1990-09-03 | 1992-03-11 | Bühler Ag | Composition and process for forming biodegradable consumer products |
CN1102371A (en) * | 1993-11-04 | 1995-05-10 | 刘定太 | Multifunction artificial wood |
JPH08134266A (en) * | 1994-11-10 | 1996-05-28 | Shigemasa Suzuki | Water-resistant plant polymer composition and its production |
WO1996023026A1 (en) * | 1995-01-26 | 1996-08-01 | Rapido Waagen- Und Maschinenfabrik Gmbh | Method of producing shaped bodies, in particular for packaging, and shaped bodies |
CN1127276A (en) * | 1995-11-08 | 1996-07-24 | 何顺伦 | Biological degraded plant fibre package material and producing method |
Non-Patent Citations (3)
Title |
---|
DATABASE CHEMABS [online] CHEMICAL ABSTRACTS SERVICE, COLUMBUS, OHIO, US; HE SHUNLUN: "Biodegradable plant fiber packaging material and producing method", XP002213091, retrieved from STN Database accession no. 131:186449 * |
DATABASE CHEMABS [online] CHEMICAL ABSTRACTS SERVICE, COLUMBUS, OHIO, US; SUZUKI SHIGEMASA: "Starch vegetable fiber composites with good resistance to water and their manufacture", XP002213092, retrieved from STN Database accession no. 125:145517 * |
DATABASE WPI Week 199726, Derwent World Patents Index; AN 1997-281478, XP002213093, "Multifunction artificial wood" * |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005012421A1 (en) * | 2003-07-31 | 2005-02-10 | Alonid Aktiengesellschaft | Biodegradable auxiliary agent for concrete construction, a method for the production and the use thereof |
WO2009099607A1 (en) * | 2008-02-01 | 2009-08-13 | L'oreal | Biodegradable moisture-impermeable packages for consumer goods |
US8481134B2 (en) | 2008-02-01 | 2013-07-09 | L'oreal. | Biodegradable moisture-impermeable packages for consumer goods |
DE102016004464A1 (en) | 2016-04-15 | 2017-10-19 | Martin-Luther-Universität Halle-Wittenberg | Packaging of milk in dissolvable portion capsules and methods for their production by ionic hydrocolloid interactions |
DE102016004463A1 (en) | 2016-04-15 | 2017-10-19 | Martin-Luther-Universität Halle-Wittenberg | Packaging of milk in dissolvable portion capsules and process for their preparation by crystallization |
DE102016004463B4 (en) | 2016-04-15 | 2018-03-08 | Martin-Luther-Universität Halle-Wittenberg | Packaging of milk in dissolvable portion capsules and process for their preparation by crystallization |
CN113583466A (en) * | 2021-07-22 | 2021-11-02 | 湖北嘉鑫环保新材料科技有限公司 | Moderate cross-linked starch biodegradable plastic and preparation method thereof |
Also Published As
Publication number | Publication date |
---|---|
DE10291848D2 (en) | 2005-07-14 |
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