CN1388159A - Degradable environment-protecting starch-based material and its production process - Google Patents
Degradable environment-protecting starch-based material and its production process Download PDFInfo
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- CN1388159A CN1388159A CN 02132545 CN02132545A CN1388159A CN 1388159 A CN1388159 A CN 1388159A CN 02132545 CN02132545 CN 02132545 CN 02132545 A CN02132545 A CN 02132545A CN 1388159 A CN1388159 A CN 1388159A
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Abstract
The present invention relates to one kind of fast degradable material for making disposable tableware and package. The material consists of starch, modifying supplementary material, sugar, plasticizer, degradation controlling agent, caprolactone-hydroxy butyrate copolymer, chitin and chitosan. The material preparing process includes weighing raw material, polymerization and mixing in a modular parallel-screw extruder. The material has adequate mechanical strength and plasticity.
Description
Technical field: the present invention relates to a kind of starting material capable of being fast degraded that are used to make disposable tableware and disposable packaging, and this raw-material manufacture method.
Background technology: though disposable foaming plastic tableware brings convenience for people's life, but it has but caused serious white pollution to environment, this foaming plastic tableware will can be degraded through supreme a century decades in soil, as its burn processing is produced obnoxious flavour again, brought severe impairment for people's living environment.Above-mentioned foaming plastic tableware can produce toxin under 60 ℃ temperature, severe impairment people healthy.Though some starch-based degrading materials of Chu Xianing had solved the white pollution problems that expanded plastic causes in recent years, these degradable materials are because bad mechanical strength, poor plasticity, thereby can not use widely.The production technique circuit of existing degradable material is longer, and production cost is higher; Will be with two cover kneading devices in production technique, be difficult for insulation, technology complex circuit, quality product in the production process and do not reach requirement.
Summary of the invention: the present invention is a kind of degradable environment-protecting starch-based material of development and manufacture method, and this degradable material has solved the bad mechanical strength of existing degradable material existence, the problem of poor plasticity, and this manufacture method has the advantage that processing line is short out, cost is low.Degradable environment-protecting starch-based material of the present invention is made up of the composition of following weight percent: starch 51～80, modification auxiliary material 10～20, plant sugar 6～12.5, softening agent 1.3～6, degraded control agent 0.2～1, polycaprolactone and polyhydroxybutyrate resin copolymer 2～8.5, chitin chitosan 0.5～1.Degradable environment-protecting starch-based material of the present invention is owing to adopted natural polymer and derivative (as: destructive starch, active starch) and improved plant sugar, and make softening agent by salad oil, add the degraded control agent and carry out the polyhydroxy butyrate ester copolymer that spawn culture produces by aliphatic polyester polycaprolactone and carbon source, different material polyreactions such as chitin glycan, and blending and modifying, add the product that vegetables oil plasticising lubricant produces, its physical strength is good, plasticity-is strong, and is therefore of many uses.This product cost is moderate, and can control degradation speed and degradation time.Manufacture method of the present invention is carried out as follows: (1) takes by weighing each raw material by weight percentage: starch 51～80, modification auxiliary material 10～20, plant sugar 6～12.5, softening agent 1.3～6, degraded control agent 0.2～1, polycaprolactone and polyhydroxybutyrate resin copolymer 2～8.5, chitin chitosan 0.5～1; (2) above-mentioned raw materials is carried out polyreaction blend modification by copolymerization; (3) then raw material is put into the cord wood parallel double-screw extruder carry out three grades mixing, the length of screw rod is (44～56) with the ratio of diameter in the forcing machine: 1, on screw rod, be distributed with three mixing sections.Only need in the production method of the present invention to have saved a cover kneading device, and be beneficial to the insulation of production process, simplify and shortened the technology circuit, reduced production cost, improved the quality of product with a cover kneading device.The mechanism of degradation of material of the present invention is: by the effect of microorganism and various bacterium and enzyme, material breakdown is become carbonic acid gas and water, reduce molecular weight, make molecular rupture become low molecular weight fragments and porous to destroy structure, increase the surface-area of material, various decomposition reactions take place under the effect of bacterium and enzyme, thereby reach by the degree of multiple microbial metabolism, by multiple biological the participation and photosynthetic comprehensive action, finally degraded fully.Material of the present invention is the novel Wholly-degradable material of moderate controllable degradation speed of cost and degradation time.Can improve the soil after the degraded, carry out benign circulation.Material of the present invention is fit to make disposable lunch-box, disposable food packing thing, industrial packaging thing, pharmaceutical pack thing, daily packing material.The disposable tableware made from material of the present invention is nontoxic, harmless, free from extraneous odour, water-fast, oil resistant, heat-resisting (+150 ℃), cold-resistant (20 ℃), resistance to compression, and can heat use in steamer, microwave oven.Goods quality exquisiteness, color and luster that material of the present invention is produced are pleasant.Organic fertilizer is made in the discarded back of its goods recyclable reprocessing on the one hand, or makes the industrial packaging goods, or as the mushroom growth base; Can be biodegradable into fertilizer on the other hand, circulate benignly, make it to go back to nature.The cost that material of the present invention is made cutlery box is 40% of a pulp goods cutlery box cost, is 50% of plant fiber products cost.
Embodiment one: the degradable environment-protecting starch-based material of present embodiment is made up of the composition of following weight percent: starch 61.5～76, modification auxiliary material 10～15, plant sugar 6～9, softening agent 1.5～4, degraded control agent 0.7～1, polycaprolactone and polyhydroxybutyrate resin copolymer 5～8.5, chitin chitosan 0.8～1.Its manufacture method is undertaken by following step: (1) takes by weighing above-mentioned each raw material; (2) above-mentioned raw materials is carried out polyreaction blend modification by copolymerization; (3) then raw material is put into cord wood balance twin screw extruder carry out three grades mixing, the length of screw rod is (44～50) with the ratio of diameter in the forcing machine: 1, on screw rod, be distributed with three mixing sections; (4) at last finished product is made in the raw material granulation in the forcing machine.In above-mentioned (2) step, the equipment that adopts is that oil heating height mixes and cold mixed all-in-one, temperature adds starch and modification auxiliary material in the time of 70～90 ℃, and high-speed mixing, add polycaprolactone and polyhydroxybutyrate resin copolymer and high-speed mixing again to 80～110 ℃, continue to be heated to 100～120 ℃ of time-divisions 2～5 times plant sugar, softening agent, degraded control agent and chitin chitosan are added; Carry out polyreaction blend modification by copolymerization, temperature is 130～160 ℃, and the time is 25～30 minutes; Be discharged at last in cold the mixing and mix, and be cooled to 70～90 ℃.Above-mentioned starch is natural polymer starch, and it is W-Gum, wheat starch, tapioca (flour) or rice fecula.Above-mentioned plant sugar is wood sugar, maltose or Dian Fentang.Above-mentioned modification auxiliary material is a polyvinyl alcohol.Above-mentioned softening agent is a salad oil.Above-mentioned material can be made various disposable food packing things, industrial packaging thing, pharmaceutical pack thing, daily necessities packing material by positive pressure forming machine, vacuum forming machine (comprising double, two-sided heating positive and negative pressure shaper), injection moulding machine.
Embodiment two: what present embodiment and embodiment one were different is that degradable environment-protecting starch-based material is made up of the composition of following weight percent: starch 55～69.3, modification auxiliary material 15～20, plant sugar 9～12.5, softening agent 4～6, degraded control agent 0.2～0.7, polycaprolactone and polyhydroxybutyrate resin copolymer 2～5, chitin chitosan 0.5～0.8.Its technological process is identical with embodiment one with the raw material that is adopted.
Embodiment three: what present embodiment and embodiment one, two were different is, after (3) step of its manufacture method finishes, the raw material that will come out from the cord wood parallel double-screw extruder is through supercharging device, make sheet material under 120～190 ℃, used supercharging device is a Melt Pump.Said process makes raw material directly make sheet material without granulation, further simplifies technology, has reduced cost.
Embodiment four: what present embodiment and embodiment one, two, three were different is that the length of screw rod is (50～56) with the ratio of diameter in the used forcing machine: 1.Other composition, manufacture method are identical with embodiment one, two, three.
Claims (10)
1, degradable environment-protecting starch-based material is characterized in that it is made up of the composition of following weight percent: starch 51～80, modification auxiliary material 10～20, plant sugar 6～12.5, softening agent 1.3～6, degraded control agent 0.2～1, polycaprolactone and polyhydroxybutyrate resin copolymer 2～8.5, chitin chitosan 0.5～1.
2, degradable environment-protecting starch-based material according to claim 1 is characterized in that it is made up of the composition of following weight percent: starch 61.5～76, modification auxiliary material 10～15, plant sugar 6～9, softening agent 1.5～4, degraded control agent 0.7～1, polycaprolactone and polyhydroxybutyrate resin copolymer 5～8.5, chitin chitosan 0.8～1.
3, degradable environment-protecting starch-based material according to claim 1 is characterized in that being made up of the composition of following weight percent: starch 55～69.3, modification auxiliary material 15～20, plant sugar 9～12.5, softening agent 4～6, degraded control agent 0.2～0.7, polycaprolactone and polyhydroxybutyrate resin copolymer 2～5, chitin chitosan 0.5～0.8.
4, according to claim 1,2 or 3 described degradable environment-protecting starch-based materials, it is characterized in that above-mentioned starch is natural polymer starch, it is W-Gum, wheat starch, tapioca (flour) or rice fecula.
5,, it is characterized in that above-mentioned plant sugar is wood sugar, maltose or Dian Fentang according to claim 1,2 or 3 described degradable environment-protecting starch-based materials.
6,, it is characterized in that above-mentioned modification auxiliary material is a polyvinyl alcohol according to claim 1,2 or 3 described degradable environment-protecting starch-based materials.
7,, it is characterized in that above-mentioned softening agent is a salad oil according to claim 1,2 or 3 described degradable environment-protecting starch-based materials.
8, the manufacture method of degradable environment-protecting starch-based material, it is characterized in that it carries out as follows: (1) takes by weighing each raw material by weight percentage: starch 51～80, modification auxiliary material 10～20, plant sugar 6～12.5, softening agent 1.3～6, degraded control agent 0.2～1, polycaprolactone and polyhydroxybutyrate resin copolymer 2～8.5, chitin chitosan 0.5～1; (2) above-mentioned raw materials is carried out polyreaction blend modification by copolymerization; (3) then raw material is put into the cord wood parallel double-screw extruder carry out three grades mixing, the length of screw rod is (44～56) with the ratio of diameter in the forcing machine: 1, on screw rod, be distributed with three mixing sections.
9, the manufacture method of degradable environment-protecting starch-based material according to claim 8, it is characterized in that in above-mentioned (2) step, the equipment that adopts is that oil heating height mixes and cold mixed all-in-one, temperature adds starch and modification auxiliary material in the time of 70～90 ℃, and high-speed mixing, add polycaprolactone and polyhydroxybutyrate resin copolymer and high-speed mixing again to 80～110 ℃, continue to be heated to 100～120 ℃ of time-divisions 2～5 times plant sugar, softening agent, degraded control agent and chitin chitosan are added; Carry out polyreaction blend modification by copolymerization, temperature is 130～160 ℃, and the time is 25～30 minutes; Be discharged at last in cold the mixing and mix, and be cooled to 70～90 ℃.
10, the manufacture method of degradable environment-protecting starch-based material according to claim 8, it is characterized in that after (3) step of its manufacture method finishes, the raw material that will come out from the cord wood parallel double-screw extruder is through supercharging device, make sheet material under 120～190 ℃, used supercharging device is a Melt Pump.
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| CNB021325456A CN1160401C (en) | 2002-07-03 | 2002-07-03 | Degradable environment-protecting starch-based material and its production process |
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| CNB021325456A CN1160401C (en) | 2002-07-03 | 2002-07-03 | Degradable environment-protecting starch-based material and its production process |
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| CN1388159A true CN1388159A (en) | 2003-01-01 |
| CN1160401C CN1160401C (en) | 2004-08-04 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101311209B (en) * | 2007-05-22 | 2011-04-06 | 季国良 | High strength starch-based degrading and environment-protecting material and preparation method |
| CN102219933A (en) * | 2011-05-10 | 2011-10-19 | 黄姜 | Process for manufacturing dining-table ornaments by starch based fully-degradable plastics |
| CN103937034A (en) * | 2014-03-31 | 2014-07-23 | 甄建民 | Biodegradable environmental-friendly plastic and production method thereof |
| CN103937035A (en) * | 2014-05-21 | 2014-07-23 | 季国良 | Starch-base degraded environmental protection material |
| CN103951852A (en) * | 2014-05-21 | 2014-07-30 | 季国良 | Manufacturing method of high-strength starch-base degradable environment-friendly material |
| CN103992516A (en) * | 2014-04-30 | 2014-08-20 | 安徽省宁国市明浩包装材料有限公司 | Environmentally-friendly plastic product and making method thereof |
| CN108976484A (en) * | 2018-06-08 | 2018-12-11 | 合肥华冠包装科技有限公司 | A kind of high-intensitive decomposable type environmental friendly packaging box |
-
2002
- 2002-07-03 CN CNB021325456A patent/CN1160401C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101311209B (en) * | 2007-05-22 | 2011-04-06 | 季国良 | High strength starch-based degrading and environment-protecting material and preparation method |
| CN102219933A (en) * | 2011-05-10 | 2011-10-19 | 黄姜 | Process for manufacturing dining-table ornaments by starch based fully-degradable plastics |
| CN103937034A (en) * | 2014-03-31 | 2014-07-23 | 甄建民 | Biodegradable environmental-friendly plastic and production method thereof |
| CN103992516A (en) * | 2014-04-30 | 2014-08-20 | 安徽省宁国市明浩包装材料有限公司 | Environmentally-friendly plastic product and making method thereof |
| CN103937035A (en) * | 2014-05-21 | 2014-07-23 | 季国良 | Starch-base degraded environmental protection material |
| CN103951852A (en) * | 2014-05-21 | 2014-07-30 | 季国良 | Manufacturing method of high-strength starch-base degradable environment-friendly material |
| CN108976484A (en) * | 2018-06-08 | 2018-12-11 | 合肥华冠包装科技有限公司 | A kind of high-intensitive decomposable type environmental friendly packaging box |
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| Publication number | Publication date |
|---|---|
| CN1160401C (en) | 2004-08-04 |
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Granted publication date: 20040804 Termination date: 20130703 |