CN1088985C - Degradable once-used tableware produced with bagasse as main material and its production process - Google Patents
Degradable once-used tableware produced with bagasse as main material and its production process Download PDFInfo
- Publication number
- CN1088985C CN1088985C CN 97100531 CN97100531A CN1088985C CN 1088985 C CN1088985 C CN 1088985C CN 97100531 CN97100531 CN 97100531 CN 97100531 A CN97100531 A CN 97100531A CN 1088985 C CN1088985 C CN 1088985C
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- China
- Prior art keywords
- bagasse
- tableware
- disposable tableware
- raw material
- main raw
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- 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.)
- Expired - Fee Related
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Abstract
The present invention provides disposable tableware capable of automatically decaying in short order after being used and discarded in the nature and a technical method thereof. The tableware is composed of 75 to 90% of bagasse, 10 to 25% of thick starch, 0.1 to 0.3% of enriched lanthanum, 0.1 to 0.2% of benzoic acid, 1 to 2% of polyvinyl alcohol and the rest of water; the technology comprises the steps that the composition is crushed to 60 to 100 meshes, and compression moulding forming is carried out at the pressure of 10 to 65 Kg/cm<2>; after being dried at 100 to 110 DEG C, the composition is coated with a waterproof layer; after being dried in the air, the composition is disinfected by ultraviolet rays, is sealed by a plastic film and then is packed.
Description
The present invention relates to a kind of utilize the bagasse that presses after the sugar to use for the main raw material manufacturing can in a short time can septic voluntarily disposable tableware after discarded.
The domestic material that is widely used as disposable tableware is the EPS of foaming at present, and EPVC, EPE etc., though these products are easy to use, health, attractive in appearance, but the result of life-time service will bring huge harm to the environment of China, particularly the tableware of white foamed plastic (EPS) is extensive use of the huge disaster that lies dormant, positive prestige is being assisted existent environment of people, it is that a kind of macromolecular compound (polystyrene) is exposed in the air or imbeds and undergroundly also can not decompose or rot through many decades, so seriously destruction and contaminated soil and water source, and it in light weight and volume is big, this causes very big burden and pressure just for the rubbish place in city, the usage period in rubbish place is shortened dramatically, if handle the recovery way with other, its cost exceeds 10 times of self-value, uneconomical economically, because its hazard rating is huge, if do not take the measure of absolute property, so in the near future, mankind space of depending on for existence and civilization thereof will be born out huge cost without redemption because of this white garbage general random.
Have the research of many units to make degradable disposable tableware with straw, straw, corn cob, wheat bran, rice bran etc. at present, the major cause that product does not put goods on the market is not solve following Several Key Problems fully: 1) the smooth demoulding of product; 2) deformation of product after the demoulding, the particularly deformation after the oven dry; 3) cost is higher.
The objective of the invention is to provide at the deficiencies in the prior art part a kind of be degradable disposable tableware of making of main raw material and preparation method thereof with bagasse.
The objective of the invention is to take following measure to realize:
One, the proportioning raw materials produced of this tableware is as follows:
Proportioning raw materials: 100%
(1) bagasse: 75～90%
(2) thick starch: 10～25%
(3) rich lanthanum RCL3-contains lanthanum trioxide LaO 〉=60%:0.1～0.3%;
(4) yellow soda ash Na
2Co
3: 4～6%;
(5) M-nitro benzoic acid: 0.1～0.2%;
(6) polyvinyl alcohol-binding agent: 1～2%;
(7) water-above-mentioned various mixing of materials source total amount: 0.5～1.8 times.
Two, preparation method:
(1) with above-mentioned material separated pulverizing to-60～-100 orders;
(2) at 10～65Kg/cm
2Compression molding under the pressure, mould remaining time are 5 paper money clocks;
(3) 100～110 ℃ of oven dry, dry back spraying waterproof layer is again 80 °～100 ℃ dryings or air-dry;
(4) dried tableware is used the plastic film seal package behind disinfection by ultraviolet light.
Wherein thick starch is mealy potato, and binding agent is for to be dissolved in 20～25 times of own wts with quantitative polyvinyl alcohol, and temperature is in 70～80 ℃ the hot water, through abundant stirring melt into transparent liquid.Available following two kinds of methods that waterproof layer is had relatively high expectations: 1, the polyurethane solution of spraying epoxy type; 2, heat spray PE or PP; Waterproof layer is required lower following composition material (weight %) 1, the lime carbonate 20～25% of spraying; 2, aluminum hydroxide gel 1～2%; 3, calcium oxide 1～2%; 4, polyvinyl alcohol 2～3%; 5, surplus is a water.
Moulding:
With above-mentioned material behind thorough mixing in 10～65Kg/cm forming under the pressure, deburring.
Dry, film.
Product can only keep flat during oven dry 100-110 ℃ of oven dry, can not stack, otherwise be difficult to parch, and the time is longer.
Film and can be according to its proportioning of different service conditions:
1) disposable tableware that waterproof layer is had relatively high expectations:
The polyurethane solution of A, spraying epoxy type (be coated with part and only need several micron thickness) is coated with part and can forming hard waterproof layer after 100 ℃ of bakings in 4 minutes, need 1～1.5 hour waterproof layer to solidify at normal temperatures, the waterproof layer that is coated with can be anti-140 ℃ high temperature and anti-saliferous, alkali, weak acid and do not damage.
B, thermospray PE and PP
2) require lower disposable tableware can spray the material (weight %) of following composition to waterproof layer
Lime carbonate 20～25%;
Aluminum hydroxide gel 1～2%;
Calcium oxide 1～2%;
Polyvinyl alcohol 2～3%;
All the other are water.
Earlier polyvinyl alcohol is thrown in stirring heating in the water of surplus (70～80 ℃ 2 hours) and make its dissolving back add all solids material, the limit heating, the limit is stirred and was got final product in 1～2 hour.
Advantage of the present invention: in light weight, intensity is good, and is nontoxic, tasteless, with low cost, raw material is extensive, is exposed in the natural air after use is discarded and rots voluntarily in one month, imbed in the soil rottenly fully in 2～3 weeks, become black mud, use and collect the feed that just can become domestic animal, fowl after the processing treatment.
Embodiment one:
Bagasse powder 83%, mealy potato 11.7%, rich lanthanum Rcl3 0.1, yellow soda ash 5%, M-nitro benzoic acid 0.2%, water are 1.8 times of above-mentioned material, binding agent 1%, above-mentioned material is mixed and fully kneading good after, be pressed into sheet, be cut into and put into mould behind the piece of certain specification and be extruded into shape, pressure is 10Kg/cm, and the mould remaining time of formpiston is deburring behind the 5 second rubber mouldings, 100-110 ℃ of oven dry, the spraying waterproof layer is used disinfection by ultraviolet light after air-dry, pack.Waterproof layer spraying one deck urethane (epoxy type) solution.
Embodiment two:
Bagasse powder 80%, mealy potato 19.7%, rich lanthanum Rcl3 (containing LaO3 7160%) 0.1%, M-nitro benzoic acid 0.2%, being mixed, to add entry be that the water of above-mentioned material gross weight 50% is mixed well after slaking in the 65Kg/cm compression molding 100 ℃ of oven dry, spraying polyurethane (epoxy type) waterproof layer, air-dry back disinfection by ultraviolet light, plastics film packs.
Claims (4)
1, a kind of is that main raw material is made degradable disposable tableware with bagasse, it is characterized in that the composition of this tableware and degree thereof are:
(1) bagasse: 75～90%;
(2) thick starch: 10～25%;
(3) rich lanthanum RCL3-contains lanthanum trioxide LaO3 〉=60%:0.1～0.3%;
(4) yellow soda ash Na
2Co
3: 4～6%;
(5) M-nitro benzoic acid: 0.1～0.2%;
(6) polyvinyl alcohol-binding agent: 1～2%;
(7) total amount after water-above-mentioned various mixing of materials: 0.5～1.8 times.
2, disposable tableware according to claim 1 is characterized in that thick starch is mealy potato;
3, a kind of is the preparation method that main raw material is made degradable disposable tableware with bagasse, and it is characterized in that: concrete method is as follows:
(1) with above-mentioned material separated pulverizing to-60～-100 orders;
(2) at 10～65Kg/cm
2Compression molding under the pressure, mould remaining time are 5 paper money clocks;
(3) 100～110 ℃ of oven dry, behind the dry back spraying waterproof layer, again 80～100 ℃ of dryings or air-dry;
(4) dried tableware is used the plastic film seal package behind disinfection by ultraviolet light.
4, according to claim 2 a kind of be the preparation method that main raw material is made degradable disposable tableware with bagasse, it is characterized in that binding agent is quantitative polyvinyl alcohol to be dissolved in be 20～25 times of own wts, temperature is in 70-80 ℃ the hot water, stirs the melt into transparent liquid through fully.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97100531 CN1088985C (en) | 1997-01-29 | 1997-01-29 | Degradable once-used tableware produced with bagasse as main material and its production process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97100531 CN1088985C (en) | 1997-01-29 | 1997-01-29 | Degradable once-used tableware produced with bagasse as main material and its production process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1160524A CN1160524A (en) | 1997-10-01 |
| CN1088985C true CN1088985C (en) | 2002-08-14 |
Family
ID=5165123
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97100531 Expired - Fee Related CN1088985C (en) | 1997-01-29 | 1997-01-29 | Degradable once-used tableware produced with bagasse as main material and its production process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1088985C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1230386A (en) * | 1998-03-27 | 1999-10-06 | 江苏南浦机电集团股份有限公司 | Plant fiber tableware, food and article packing products and their production |
| CN1114376C (en) * | 2000-04-24 | 2003-07-16 | 冯永新 | Degradable expendable utensils for snack |
| CN103203790A (en) * | 2013-01-30 | 2013-07-17 | 天津圣运新材料科技有限公司 | Method for producing fiberboard by utilizing cementing property of straw fibers |
| CN107629372A (en) * | 2017-10-10 | 2018-01-26 | 广西南宁桂尔创环保科技有限公司 | A kind of method that automobile plastic is prepared using bagasse and polyvinylalcohols starch |
| CN115584299A (en) * | 2022-08-19 | 2023-01-10 | 浙江美通香薰科技股份有限公司 | Candle wick, candle wick material, candle and preparation method of candle wick |
-
1997
- 1997-01-29 CN CN 97100531 patent/CN1088985C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1160524A (en) | 1997-10-01 |
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