CN101838405A - Industrial production method of fully-degradable food packing material - Google Patents
Industrial production method of fully-degradable food packing material Download PDFInfo
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- CN101838405A CN101838405A CN200810170935A CN200810170935A CN101838405A CN 101838405 A CN101838405 A CN 101838405A CN 200810170935 A CN200810170935 A CN 200810170935A CN 200810170935 A CN200810170935 A CN 200810170935A CN 101838405 A CN101838405 A CN 101838405A
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- starch
- proline
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- vinyl alcohol
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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
- 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
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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
The invention provides an industrial production method, which takes proline and ethylene-vinyl alcohol polymer as plasticizer and solubilizer to combine fully-degradable food packing material. Corn, potato, wheat and cassava starch are physically smashed to cause starch to be performed with ultramicro-treatment so as to improve starch mobility and fallibility; a certain quantity of proline, ethylene-vinyl alcohol polymer and amine commonly used in the traditional method as cross-linking agent and the like to modify starch. Modified starch is mechanically extruded out by double screws in an alloying mode to calendar the starch into panels. Technology, such as plastics suction, mould pressing and the like is adopted to prepare starch base packaging material. The food packaging material prepared by the method totally can degrade and conform to national food hygienic standard, and has favorable mechanical property. The whole technology protects environment, has low energy consumption and low cost, and simple and economical process flow can realize industrial production.
Description
One, technical field
What the present invention relates to is a kind of industrialized preparing process that is respectively softening agent and the synthetic fully-degradable food packing material of solubilizing agent with proline(Pro) and vinyl-vinyl alcohol polymer.
Two, background technology
Edibility degraded packaging material for food is the advanced subject of new millennium investigation of materials.The edible packaging diverse in function, harmless environment is drawn materials conveniently, can be edible, therefore developed country's grocery trade is competitively developed in recent years, and the product innovation new technology constantly occurs.
The U.S. has many developments group to carry out the research of each side, and to heterogeneity edible fresh-keeping thin film study, Roger Clemens university is to the research of protein edible film as University of Minnesota, and University of Wisconsin is to the research of polysaccharide fat edible film etc.Japan and Germany have also carried out extensive studies.What deserves to be mentioned is that the U.S. and Japan have accumulated a large amount of patented technologies.
At present, the packaging material for food of " degradable " is also just carried out by China, progressively forbids the use of non-degradable material, and next step developing direction also is " edible packaging " material.About the research of edible packaging,, study less abroad with respect to starting late.Multi-functional edibility container has two kinds of research tendencies at present.The one, starch+protein material, the 2nd, Mierocrystalline cellulose+protein material.For edible film, mainly study filming of fruit freshness preserving.About the edibility degradable material, the research of China has also obtained some progress, has obtained some patents.For starch-based material, the starch conversion of Changchun applied chemistry institute; Human isoamylases such as high group jade can make the amylopectin in the starch take off and prop up and formation chain starch, thereby improve the film forming properties and the intensity of starch film; The adjacent Weihe of Liu of Northwest Agricultural University is by being linking agent with epoxy chloropropane and the acid of binary carbonyl, the W-Gum film carried out suitable cross-linking modified, makes the raising of starch film tensile property, saturating wet and ventilation property reduction, water-soluble portion descends, and good mouthfeel has been obtained better better effect; Yang Yigong, Chen Xiaoling make the edible starch film with enzyme process one esterification complex denaturation under laboratory condition.China develops W-Gum sodium alginate or chitosan composite package film, has stronger tensile strength and unit elongation, and good water tolerance; For protein-based material, also obtain some progress, but because protein three, quaternary structure are lacked understanding, fundamental research has to be strengthened.Other carbohydrate are also studied, and carried out chitin film as people such as Le Peisi the fruit vegetable fresh-keeping effect is studied.
The softening agent of using always on the suitability for industrialized production is the muriate of phthalic acid ester class (butyl phthalate, octyl phthalate etc.), phosphoric acid ester (trioctyl phosphate etc.), phosphorous acid esters, fatty acid ester, paraffin or stearate etc. at present; Solubilizing agent commonly used is acrylic resin, polyester etc.These additives more or less have non-degradable, not edible, poor with the original copolymer consistency, influence shortcoming such as other performance.
Seeking suitable additive starch is carried out modification, is that a kind of very convenient, direct method is synthesized fully-degradable food packing material.
Three, summary of the invention
The object of the present invention is to provide a kind of industrialized preparing process that can synthesize the fully-degradable food packing material of fully-degradable food packing material.
The object of the present invention is achieved like this: with corn, potato, wheat, the fragmentation of tapioca (flour) physics, add mass ratio and be 4% proline(Pro), mass ratio and be 3% vinyl-vinyl alcohol polymer and conventional amine and make linking agent starch is carried out modification.
Its specific operation process is:
With corn, potato, wheat, the fragmentation of tapioca (flour) physics, add mass ratio and be 4% proline(Pro), mass ratio and be in 3% vinyl-vinyl alcohol polymer and the traditional method amine commonly used and make linking agent starch is carried out modification, modification starch is later extruded, rolled into sheet material or prepare the starch base wrapping material through plastic uptake, mould pressing process through twin screw machinery alloying.
The present invention is with corn, potato, wheat, the fragmentation of tapioca (flour) physics, make the starch ultramicronising, improve the flowability and the fillibility of starch, be added in proline(Pro), the vinyl-vinyl alcohol polymer of certain mass ratio and the traditional method amine commonly used and make linking agent etc. starch is carried out modification.Sheet material is extruded, rolled into to modification starch later through twin screw machinery alloying.Through prepared starch base wrapping material such as plastic uptake, mold pressings.
The mechanical property of starch plastics sheet material is carried out the test of tensile strength and elongation according to GB453-79, and tensile strength is 90MPa, and elongation is 80%.
Packaging material for food detects according to GB18006.1-1999 degradable disposable dinner (beverage) containers general technical specifications, as a result conformance with standard.
Four, embodiment
For a more detailed description to the present invention below:
1, corn, potato, wheat, tapioca (flour) are passed through the pulverising mill physical pulverization.Make the starch ultramicronising, the granularity of starch reaches 15～100 μ m.Its objective is and improve material dispersed, adsorptivity, solvability, chemically reactive etc., thereby improve physics, the chemical property of powder.
2, add adding mass ratio in ultramicronising starch is that 4% proline(Pro) and mass ratio are that 3% vinyl-vinyl alcohol polymer is respectively softening agent and expanding material and tradition additive commonly used and carries out mechanically mixing ethylene glycol, glycerol etc.The adding of proline(Pro) changes molecular interaction, shows as glass transition temp and reduces, thereby improve workability, flexibility etc.; The polymeric adding of vinyl-vinyl alcohol has the effect of the compound of promotion fused, can reduce the melt temperature of mixture, the degree of promoting compound hot strength, the dispersiveness that improves compound and homogeneity, minimizing melt fracture and fouling, raising surface luster, and give compound bigger ductility.
3, mixed material is positioned over high mixing in the jar, 130 ℃ of temperature, pressure is mixing 30min under the 15MPa, extrudes, rolls into the thick starch plastics sheet material of 1.0～2.0mm through twin screw machinery alloying.
In the course of processing, vinyl-vinyl alcohol polymer is heated and softens earlier, because it is good with μ compound consistency, compound is on every side linked together, and shearing force from the outside passed to compound, play the effect of transfer of shear forces, thereby promoted polymer melt.
4, sheet material is carried out prepared starch base wrapping material such as plastic uptake, mold pressing.
Claims (2)
1. the industrialized preparing process of a fully-degradable food packing material is characterized in that with proline(Pro) and vinyl-vinyl alcohol polymer is respectively softening agent and solubilizing agent is synthetic, its addition be respectively mass ratio be 4% and mass ratio be 3%.
2. the industrialized preparing process of fully-degradable food packing material according to claim 1, it is characterized in that: with corn, potato, wheat, the fragmentation of tapioca (flour) physics, add mass ratio and be 4% proline(Pro), mass ratio and be in 3% vinyl-vinyl alcohol polymer and the traditional method amine commonly used and make linking agent starch is carried out modification, modification starch is later extruded, rolled into sheet material or prepare the starch base wrapping material through plastic uptake, mould pressing process through twin screw machinery alloying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810170935A CN101838405A (en) | 2008-10-14 | 2008-10-14 | Industrial production method of fully-degradable food packing material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810170935A CN101838405A (en) | 2008-10-14 | 2008-10-14 | Industrial production method of fully-degradable food packing material |
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| Publication Number | Publication Date |
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| CN101838405A true CN101838405A (en) | 2010-09-22 |
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| CN200810170935A Pending CN101838405A (en) | 2008-10-14 | 2008-10-14 | Industrial production method of fully-degradable food packing material |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103467609A (en) * | 2013-10-10 | 2013-12-25 | 长沙理工大学 | Preparation method of nano carboxymethyl starch |
| US10575536B2 (en) | 2012-08-23 | 2020-03-03 | Loliware Inc | Edible cup and method of making the same |
| US11912856B2 (en) | 2021-06-23 | 2024-02-27 | Loliware, Inc. | Bio-based, biodegradable compositions and articles made therefrom |
-
2008
- 2008-10-14 CN CN200810170935A patent/CN101838405A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10575536B2 (en) | 2012-08-23 | 2020-03-03 | Loliware Inc | Edible cup and method of making the same |
| CN103467609A (en) * | 2013-10-10 | 2013-12-25 | 长沙理工大学 | Preparation method of nano carboxymethyl starch |
| US11912856B2 (en) | 2021-06-23 | 2024-02-27 | Loliware, Inc. | Bio-based, biodegradable compositions and articles made therefrom |
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