CN100381491C - Foam forming method for completely biological degradable plastic tubleware and drinking ware - Google Patents
Foam forming method for completely biological degradable plastic tubleware and drinking ware Download PDFInfo
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- CN100381491C CN100381491C CNB2004100627283A CN200410062728A CN100381491C CN 100381491 C CN100381491 C CN 100381491C CN B2004100627283 A CNB2004100627283 A CN B2004100627283A CN 200410062728 A CN200410062728 A CN 200410062728A CN 100381491 C CN100381491 C CN 100381491C
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Abstract
The present invention discloses a foam forming formula and a technology for completely biodegradable starch based plastic tableware and drinking ware. The tableware and drinking ware are mainly made by mixing and foaming starch (accounting for more than 80%), polyvinyl alcohol, a plasticizing agent, a foaming agent, other adjuvant materials (such as paper pulp), stuffing materials (such as one or several kinds of rice hull powder, corn stamens or straw powder, SiO2, calcium carbonate, etc.), etc.; then, the tableware and drinking ware are formed by surface treatment. The technology is characterized in that the technology overcomes the defect that the tableware and drinking ware including fast meal boxes and the like made from starch have easy crisp property and insufficient water resistance at high temperature owing to high starch proportion. Besides, the polyvinyl alcohol proper has a binding agent and the foaming action under the existence of water, the paper pulp improves the toughness of products, and the stuffing materials including the rice hull powder or the straw powder, the SiO2 and the like can improve the water resistance of the products at high temperature. Therefore, the plastic is a completely biodegradable starch based plastic with low price and fine quality and can be manufactured into various kinds of completely biodegradable tableware and drinking ware.
Description
Technical field
The present invention relates to the prescription and the preparation method of the fully biodegradable plastic tubleware and drinking ware of a kind of starch base, belong to International Classification of Patents C08L97/00 " composition that contains lignin material " technical field.
Background technology
Now, world's plastic applications is increasingly extensive, and output grows with each passing day, 1.4 hundred million tons/year have been reached at present, but after a large amount of the use, annual have 5,000 ten thousand tons of plastic refuses to cause " white pollution " to soil, rivers, ocean and environment approximately, caused that the whole world pays close attention to; Wherein the U.S. and West Europe plastic refuse have reached annual 3000 ten thousand tons, and Japan is 1,200 ten thousand tons.In China, be 8,000,000 tons every year, and only the plastic refuse in Shanghai City every year just reaches more than 300,000 tons.For solving the environmental pollution that the waste plastic thing is caused.Photodegradation, biological degradation and light/biodegradation plastic emerge one after another, according to U.S. Structrure﹠amp; The Analyst investigation and analysis, the demand of degraded market, North America in the time of 2000 reaches 3,200,000 tons, and wherein the output of biodegradable plastic is 1,100,000 tons, occupies first of all kinds of degradative plasticss.Someone gives meter in 21 century, and the output of biodegradable plastic will account for the 10-20% of whole plastics output, that is reaches annual 1500 ten thousand tons to 3,000 ten thousand tons level, and visible development prospect is wide.
In the biological degradation field, can be divided into complete biodegradable plastics and crumbling property of biology plastics two big classes again.Wherein gondola Meter-Bi, the Novon of the U.S. and the Biopol of Britain and Japanese at present Bionole are the fully biodegradable plastics that attract most attention on the present world market, and at home, at present China aspect the research of completely degradable plastic and the production with also have suitable gap abroad.Mainly carry out be starch filled type biodegradable plastic and additive-based photodegradable plastics, degradation polymer type degradative plastics is not seen the report that production is arranged as yet fully.But in food and drink tool fields such as degradable fast food lunch-boxes, domesticly all obtained progress, progressively substituted the national departments concerned of not degrading and classify it as disposable foaming plastic tablewares such as the former PS of product that time limit is eliminated in the following aspects.
At present, the mess-tin of disposable degradable and food and drink tool mainly contain following five aspects: the one, and cardboard is coated with membranous type; The 2nd, moulded pulp set for dining; Three is vegetable fibre (rice wheat husk); The 4th, the starch moulding type; Five is light/biological degradation polypropylene (non-expansion type); And this five based article respectively has relative merits.
Summary of the invention
Purpose of the present invention is at the technical deficiency in present domestic degradative tableware aspect, and the prescription and the foaming forming technique of a kind of starch-PVA-packing type fully biodegradable food and drink tool are provided.
Technical scheme of the present invention is as follows.
A kind of foam forming method of completely biological degradable plastic tubleware and drinking ware, be based on starch, starch content accounts for more than 80%, add polyvinyl alcohol and make tackiness agent, add auxiliary material again: as paper pulp, and filler: as among powdered rice hulls, corn core or tangerine bar powder, SiO2 powder, the CaCO3 etc. one or more; Add small amount of plasticizer again: as glycerine and whipping agent: as water etc., through blend, in corresponding mould in the foaming and be processed into the various food and drink tools that can degrade fully down of 150～160 ℃ of temperature.
The food and drink tool price that the present invention makes is lower, and raw material is renewable, is easy to recycle and handle, and variety range is wide, can be made into difform product, and market outlook are boundless behind the degradable waterproof membrane of coated.
Concrete prescription of the present invention is (weight percent):
Each kind of starch is more than 80%, paper pulp 5～10%; PVA5～10%; Filler is one or more among rice wheat husk powder, tangerine bar powder, Semen Maydis powder, SiO2 or the CaCO3 etc.: 5～10%; Softening agent 3～5%; Waterproof coating material 1～2%; Whipping agent water is an amount of.
Starch used in the present invention is each kind of starch, as W-Gum, potato starch or tapioca (flour) etc.;
Paper pulp used in the present invention is various straw pulps or wood pulp, and employed PVA is 1799 types or 1999 types; Employed filler can be one or more in powdered rice hulls, tangerine bar powder, corn core or SiO2, the CaCO3 powder etc.
Softening agent used in the present invention is a glycerine etc., and employed whipping agent is a water etc.;
Waterproof degradable coating used in the present invention is polyamide-based.
Operational path of the present invention is:
Raw material through blend, foams in mould to foaming machine or microwave oven, through adding the coating waterproof layer, obtains goods of the present invention again.
Description of drawings
Fig. 1 is a process route chart of the present invention.
Embodiment
Embodiment 1: 800 parts of Semen Maydis powder, and 60 parts of paper pulp, PVA60 part, powdered rice hulls 50 minutes, 30 parts in softening agent adds 300 parts of water; In mixer, stir evenly,, send in the mould of foaming machine,, behind the coated waterproof layer, promptly get goods then 150～160 ℃ of foaming 3 minutes through metering.
Embodiment 2: 800 parts of potato starches, PVA50 part, 50 parts of paper pulp, 100 parts in tangerine bar powder, 30 parts in softening agent, 280 parts in water; Blend in mixer through metering, is sent in the foaming machine mould and is foamed, and stops foaming in 3 minutes at 160 ℃, and product is behind the polyamide-based water-resisting agent of coated, and the dry goods that get are sent into stockyard.
Embodiment 3: 800 parts of tapioca (flour)s, PVA60 part, 40 parts of paper pulp, filler: 100 parts in powdered rice hulls or tangerine bar powder, 30 parts in softening agent, 300 parts in water; In blender and mixing, send in the mould of little skin stove formula foaming machine, 150～160 ℃ of foaming 1 minute, product were after coated is starched strong amine waterproof layer, and the dry goods that get are put in storage.
Claims (5)
1. the foam forming method of a completely biological degradable plastic tubleware and drinking ware is characterized in that:
Concrete prescription is as follows, by weight percentage:
Starch based 75-80%; Polyvinyl alcohol 5-10%; Paper pulp 5-10%; Filler 5-10%;
Softening agent 3-5%; Whipping agent water is an amount of; Degradable poly amides waterproof paint 1-2%;
Concrete foam forming method: starch and polyvinyl alcohol, paper pulp, filler, softening agent and whipping agent are sent in the foaming machine mould through the blend metering, 150-160 ℃ the foaming 3 minutes after, apply described degradable poly amides waterproof paint, drying obtains goods.
2. method according to claim 1 is characterized in that: described starch based comprises W-Gum, tapioca (flour) or potato starch.
3. method according to claim 1 is characterized in that: described polyvinyl alcohol is 1799 or 1999 types.
4. method according to claim 1 is characterized in that: described paper pulp is non-wood pulp or wood pulp class paper pulp.
5. method according to claim 1 is characterized in that: described filler is rice wheat husk powder, tangerine bar powder, SiO
2, or CaCO
3In the powder one or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100627283A CN100381491C (en) | 2004-07-08 | 2004-07-08 | Foam forming method for completely biological degradable plastic tubleware and drinking ware |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100627283A CN100381491C (en) | 2004-07-08 | 2004-07-08 | Foam forming method for completely biological degradable plastic tubleware and drinking ware |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1587305A CN1587305A (en) | 2005-03-02 |
| CN100381491C true CN100381491C (en) | 2008-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2004100627283A Expired - Fee Related CN100381491C (en) | 2004-07-08 | 2004-07-08 | Foam forming method for completely biological degradable plastic tubleware and drinking ware |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101831086B (en) * | 2010-04-23 | 2011-12-14 | 平顶山市蓝峰科技实业有限公司 | Completely-biodegradable disposable dinnerware sheets |
| CN104387621A (en) * | 2014-11-19 | 2015-03-04 | 吉林中之林农业科技有限公司 | Thermoplastic starch material and process for preparing same |
| CN106947117B (en) * | 2017-05-04 | 2019-06-07 | 淄博成达塑化有限公司 | Fiber reinforcement starch foaming tableware of complete biodegradable and preparation method thereof |
| CN108129701A (en) * | 2018-01-26 | 2018-06-08 | 上海理工大学 | A kind of method using big wheat husk production high performance plastic film |
| CN113321841B (en) * | 2021-05-19 | 2023-04-07 | 东莞市凯成环保科技有限公司 | Preparation method of waterproof starch foaming material |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1048221A (en) * | 1989-06-21 | 1991-01-02 | 郭勇 | Biodegradable high-molecular film and manufacture method thereof and purposes |
| CN1089279A (en) * | 1992-11-24 | 1994-07-13 | 帕克·戴维斯公司 | Biodegradable starch-containing composition |
| JPH09275820A (en) * | 1996-04-10 | 1997-10-28 | Topy Green Kk | Soil-degradable sheet for agriculture and horticulture |
| JPH1043728A (en) * | 1996-08-05 | 1998-02-17 | Mitsubishi Materials Corp | Treating compound for garbage treating machine |
| CN1199593A (en) * | 1998-05-06 | 1998-11-25 | 中国科学院广州化学研究所 | Fibrous composite mould pressing snack box |
-
2004
- 2004-07-08 CN CNB2004100627283A patent/CN100381491C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1048221A (en) * | 1989-06-21 | 1991-01-02 | 郭勇 | Biodegradable high-molecular film and manufacture method thereof and purposes |
| CN1089279A (en) * | 1992-11-24 | 1994-07-13 | 帕克·戴维斯公司 | Biodegradable starch-containing composition |
| JPH09275820A (en) * | 1996-04-10 | 1997-10-28 | Topy Green Kk | Soil-degradable sheet for agriculture and horticulture |
| JPH1043728A (en) * | 1996-08-05 | 1998-02-17 | Mitsubishi Materials Corp | Treating compound for garbage treating machine |
| CN1199593A (en) * | 1998-05-06 | 1998-11-25 | 中国科学院广州化学研究所 | Fibrous composite mould pressing snack box |
Non-Patent Citations (2)
| Title |
|---|
| 全生物降解塑料片制备研究. 赵华，徐丽芳.北京轻工业学院学报，第17卷第2期. 1999 * |
| 可完全生物降解淀粉基塑料片的研制. 付秀娟，李庆新，黄进.化工新型材料，第31卷第4期. 2003 * |
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| CN1587305A (en) | 2005-03-02 |
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