CN1443631A - Environment-protecting bio-degradable appliances and its production method - Google Patents
Environment-protecting bio-degradable appliances and its production method Download PDFInfo
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- CN1443631A CN1443631A CN 02107037 CN02107037A CN1443631A CN 1443631 A CN1443631 A CN 1443631A CN 02107037 CN02107037 CN 02107037 CN 02107037 A CN02107037 A CN 02107037A CN 1443631 A CN1443631 A CN 1443631A
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Abstract
The present invention relates to a kind of environmental protection appliance which can be decomposed biologically and its production method. It includes the following steps: firstly, preparing plant powder material obtained by pulverizing plant fibre raw material and liquid matching material containing binder component, mixing the above-mentioned two materials to obtain a mixture material, drying the mixture material and making it into formed material, heating and pressurizing said formed material in heating mould, in the course of moulding operation exhausting air so as to obtain the formed appliance self-body with predefined form, then applying water-proofing layer on the surface of the appliance self-body, drying.
Description
Technical field
The present invention has the pass with Environment protection device, particularly about a kind of can be by the environmental protection utensil and the method for making thereof of biological decomposition.
Background technology
Present common what is called " disposable utensils ", mostly be to be material with expanded polystyrene (EPS) (PSP: be commonly called as Poly Foam), or else be exactly to adopt cardboard or wood chip, yet because Poly Foam can't be by the biological decomposition of nature, and cardboard or wood chip need cut down forest in a large number, so all caused serious environmental issue.
Recently industrial circle is is just actively researched and developed the replacement article of unlikely destruction environment, wherein attract attention, promptly be that the plant fiber material (being generally husk) that will hang down value blends into the powder shape, give heating pressurization again and be shaped to article (for example bowl, dish, the basin of reservation shape ... Deng), its great advantage is that raw material obtains easily, and finished product can not caused environmental issue by biological decomposition.Yet at present that is that all right is ripe for practice technology in this respect, still has many parts that wait to overcome and improve, such as the intensity, the resistance to water that look like finished product, and the simplification of processing procedure, optimization, further reduction of cost or the like.
For example Japan speciallys permit the method for making that open 2000-355008 (P2000-355008A) patent case is provided, be to be that main plant material powder and the Biodegradable material that contains adhesive are mixed into composite material with rice husk, then this composite material is added and be pressed into middle formed body, again in this centre formed body surface configuration weave cotton cloth, adhesive-bonded fabric and become formed body, again this formed body is added at last and is pressed into reservation shape.Perhaps, make this composite material become muddy, be applied to again weave cotton cloth, on the adhesive-bonded fabric and drying make sheet material, slimy this composite material of lamination again on this sheet material gives the heating pressurization at last again and is shaped to reservation shape.In above-mentioned method for making, the bond strength that interpolation is weaved cotton cloth, the usefulness of adhesive-bonded fabric is intended to supply plant powder makes the robustness of moulding product reach practical level, and thought so makes the program of this method for making comparatively loaded down with trivial details, production cost is higher, thereby the shortage market competitiveness, can't the practice volume production.
Similarly, the finished product that nearly all existing method for making is made in present this field, in practicality (is intensity, resistance to water, thermostability ... Deng), three aspects such as the feature of environmental protection (promptly whether decomposing easily) and production cost, all do not reach the optimal balance point that can be accepted simultaneously by industrial circle and market.Simple example, under existing method for making, if stronger product intensity will be arranged, then wherein contained resin composition is promptly more, for example comprise the Lauxite that comprises 10-35% in the PUR, China's method for making that No. 98121944 case provided of 5-20% in China's method for making that No. 97107979 case provided, and these resin compositions all can't be by biological decomposition, so the feature of environmental protection of finished product does not reach ideal.Opposite, many existing method for makings are by adding water-soluble resin or starch the plant powder to be cohered, though the finished product of so making more easily decomposes, but the bond strength that these methods can be brought into play is not high, so the finished product of making is all not good in the performance of each side such as intensity, resistance to water, oil resistivity, acid resistance, anti-alcoholic strength and thermostability.
Summary of the invention
Main purpose of the present invention promptly provide a kind of can be by the environmental protection utensil and the method for making thereof of biological decomposition, its processing procedure is comparatively simplified, production cost is lower, and the utensil of being made has splendid intensity, resistance to water, oil resistivity, acid resistance, anti-alcoholic strength and thermostability, and the exhausted major part of the Main Ingredients and Appearance of this utensil all is the raw material that can be decomposed by nature biotechnology, so can not cause environmental issue.
Take off purpose for before reaching, provided by the invention can be by the method for making of the environmental protection utensil of biological decomposition, include the following step: a. prepares in advance with plant fiber material and is pulverized the plant powder that forms, and the liquid state batching that contains the adhesive composition; B. this plant powder and this liquid state batching is filled with predetermined ratio and part mix, become composite material; C. dry this composite material, make its moisture content below predetermined value, become the moulding materials; D. with heated mould this moulding materials heating is pressurizeed, mold the apparatus body of reservation shape; Be that the exhaust of carrying out action is arranged in the pressing mold process, moisture content, gas in the material are discharged; E. cover the cloth watertight composition on this apparatus body surface; F. toast covering the apparatus body that is furnished with this watertight composition, promptly finish aforementioned environmental protection utensil after the cooling.
Wherein: in step a, the plant fiber material of this plant powder can be rice husk, wheat husk, bamboo, peanut shell, bagasse, straw, paper pulp ... wherein a kind of, or wherein at least two kinds mixing.
Wherein: in step a, the particle diameter of this plant powder is the 50-200 order.
Wherein: in step a, main penta part of this liquid state batching is synthetic resin, solvent and curing agent.
Wherein: the synthetic resin in this liquid state batching can be epoxy resin, silicon compound, synthetic rubber, Petropols, EVA, PVA, PVAc ... wherein a kind of, or wherein at least two kinds mixing.
Wherein: the solvent in this liquid state batching can be toluene, dimethylbenzene, ethanol ... wherein a kind of, or wherein at least two kinds mixing.
Wherein: in step b, this plant powder accounts for 70-98%, and should the liquid state batching account for 2-30%.
Wherein: in step b, be to utilize high-speed mixer to mix, the time is 30-100 second.
Wherein: in step c, the moisture content of these moulding materials is below 10%, but and the decomposed substance in these moulding materials account for 86.5-99.1%.
Wherein: in steps d, the mold temperature of this heated mould is 50-180 ℃, and pressure is 25,85kg/cm
2, the pressing mold time is 5-50 second.
Wherein: in steps d, this apparatus body that moulded section goes out, thickness is at 0.5-10mm.
Wherein: between steps d and step c, again this apparatus body is toasted in addition.
Wherein: in step c, be to cover this watertight composition of cloth on this apparatus body surface in the mode of spraying underwater paint.
Wherein: in step c, be to cover this watertight composition of cloth on this apparatus body surface to be stained with the mode of soaking underwater paint.
Wherein: in step c, the thickness of this watertight composition is 5-30 μ m.
Wherein: in step e, only the surface local at this apparatus body covers this watertight composition of cloth.
Wherein: in step f, be with 80-150 ℃ of baking 5-20 minute.
Wherein: after step f, in the high-temperature baking mode this utensil is carried out the sterilization operation again.
Wherein: after step f, by infrared ray or ultraviolet ray this utensil is carried out the sterilization operation again.
The present invention is a kind of can be by the environmental protection utensil of biological decomposition, be with in the claim 1 to 19 wherein any one described method for making made, it is characterized in that, its body is to mix the liquid state batching that contains adhesive by plant powder, through heating pressurization and moulded section, and its surface is covered and is furnished with watertight composition.
Now the present invention will be further described to lift a preferred embodiment.
The specific embodiment
What this preferred embodiment provided can be to include the following step by the method for making of the environmental protection utensil of biological decomposition:
Step 1: prepare in advance with plant fiber material and pulverized " the plant powder " that forms, and " the liquid batching " that contain the adhesive composition.Wherein, this plant fiber material can be rice husk, wheat husk, bamboo, peanut shell, bagasse, straw, paper pulp ... wherein a kind of, or wherein at least two kinds mixing become particle diameter at this plant powder of 50-200 purpose through after blending.The Main Ingredients and Appearance of this liquid state batching is avirulent synthetic resin, solvent and curing agent, wherein, this synthetic resin can be epoxy resin, silicon compound (for example tetraethoxysilane (TEOS) etc.), synthetic rubber (Rubber), Petropols, EVA (ethylene-vinylacetate; Ethene one acetate ethylene copolymer), PVA (polyvinyl alcohol; Polyvinyl alcohol), PVAc (polyvinyl acetate; Polyvinyl acetate) ... wherein a kind of, or wherein at least two kinds mixing; This solvent then can be toluene, dimethylbenzene, ethanol ... wherein a kind of, or wherein at least two kinds mixing.
About the modulator approach of this liquid state batching, for example, can earlier solid-state epoxy resin be added solvent, and heat to about 100 ℃, stirring makes it be dissolved into liquid state fully, adds curing agent at last again.
Step 2: account for 70-98% with this plant powder, this liquid state batching accounts for the ratio of 2-30%, the two is filled part mix, making the surface of plant powder evenly cover cloth should the liquid state batching (annotating: utilize high-speed mixer to need 30-100 second), becomes thick " composite material ".
Step 3: this composite material is carried out drying, its moisture content is dropped to below 10%, become " moulding materials ".And through these moulding materials of gained behind this drying program, solid content resin wherein only has 0.9-13.5%, and in other words, but decomposed substance (being plant material) is up to 86.5-99.1%.
Step 4: get these moulding materials as the pressing mold materials, to its heating pressurization, promptly carry out the moulded section operation with heated mould.According to the rerum natura demand of shape, thickness or the finished product of moulding product, mould temperature, pressure and the time of this pressing mold operation can suitably be adjusted, and generally speaking, mold temperature is 50-180 ℃, and pressure is 25-85kg/cm
2, and the time is 5-50 second.And, be that the exhaust of carrying out action is arranged in the pressing mold process, allow gas in material gases such as () moisture vapors be discharged, make the quality of moulding product preferable, intensity is higher.The exhaust mode that present embodiment adopted, be with less pressure raw material roughly to be finalized the design earlier, appropriate again die sinking is to allow moisture content, gaseous volatilization in the raw material discharge, then (annotate: with the big further compacting of pressure again according to the finished product difference, also have and to carry out the breathing a mould second time), and mold " apparatus body " of reservation shape, as bowl, dish, soupspoon ... Deng, and its thickness can be 0.5-10nm.
Step 5: according to the environmental condition of aforementioned each step, optionally once toast this apparatus body action (temperature is 100 ℃) this moment, so that the moisture content of material internal, gas volatilize really and disperses.Certainly, if preposition step process is appropriate, this baking operation also can suitably be omitted.
Step 6: to spray or to be stained with the mode of soaking underwater paint, cover cloth one watertight composition on the surface of this apparatus body, the thickness of this watertight composition is at 5-30 μ m.According to the finished product purposes, can select oiliness or Waterproof lacquer for use, wherein, oiliness underwater paint for example available epoxy adds curing agent, and it has bridging action, but the bond intensity of strengthening material also can select to add calcium carbonate (CaCo in addition
3), to change the glossiness of painted surface; And Waterproof coats with lacquer available acryl emulsifying resins, and it has more labile advantage.In addition,, also can only be coated with, for example only coat watertight composition at the dish inner face at surface local according to the finished product purposes.
Step 7: then with 80-150 ℃ temperature, toast covering the apparatus body that is furnished with watertight composition, the time is 5-20 minute, makes this watertight composition drying and moulding and adheres to really.
Step 8: treat that this utensil cools off naturally, promptly finishing one can be by the environmental protection utensil of biological decomposition.
Additional disclosure if make the utensil of tableware class, then also will be carried out one sterilization operation, and carries out immediately after sterilization every the bacterium packing, to guarantee the health of tableware.Certainly, if make other utensil (for example flowerpot, ashtray etc.) outside tableware, the medical device, this sterilization operation does not promptly need.Again, aforementioned sterilization operation is to select to adopt high-temperature baking sterilization (can be reached simultaneously by the baking operation of step 7), or to utilize infrared ray or ultraviolet ray to carry out sterilization according to the character of finished product.
Use above-mentioned method for making, can make bowl, dish, basin, soupspoon ... Deng environment protecting tableware, and the apparatus of planting such as flowerpot, holder basin, seedling-growing container, or such as the ball seat (teepeg) of ashtray, sheet material, golf ... in utensil, application is very extensive.Because processing procedure of the present invention and uncomplicated, and main material (i.e. this plant fiber material) obtain very easily, mostly again is plant cots that agricultural goes up no value, so cost extremely low (about and general tableware made of paper is suitable) has market value.Moreover because of obtaining of raw material need not cut down forest, and finished product can be by the biological decomposition of nature, so can not produce environmental issue.
In addition, the present invention fills part with this liquid state batching that contains adhesive with this plant powder to mix, and allows the powder surface evenly cover cloth liquid material, and make and concoct this composite material that forms, and these moulding materials behind the oven dry moisture content, have splendid cohesiveness between the powder; Add the exhaust of carrying out action is arranged in the pressing mold process, make the volatilizable discharge of moisture content, gas between powder, unlikelyly seal that (annotate: moisture content, gas are if reside in material internal in material internal up for safekeeping, will influence the cohesive strength of interior molecules, make that the finished product make is too fragile and split folding easily that this also is the not good big main causes of most existing product practicality).Thus, the utensil that institute of the present invention moulded section goes out, structure is very fine and close solid, so confirm through actual test back, compared to existing can be by the utensil of biological decomposition, the environmental protection utensil that the present invention made has better intensity, resistance to water, oil resistivity, acid resistance, anti-alcoholic strength and thermostability really.
The environmental protection utensil that last supplemental instruction is made with above-mentioned method for making of the present invention, in the evaporation residue (Dried residue) of dissolution test (extraction test) and several important test datas aspect the residual solvent (solventrssidues): aspect evaporation residue, water is 214ppm, 4% acetic acid (4%CH
3CCOH) be 3.5ppm, 20% ethanol (20%Alcohol) is 6.0PPm, and normal heptane (n-Heptane) then fails to detect; Aspect residual solvent, dimethylbenzene (Xylene) is 0.71ppm.Above data all meet " food utensil, container, packing sanitary standard ".
Claims (20)
1. one kind can be is characterized in that it includes the following step by the method for making of the environmental protection utensil of biological decomposition:
A. prepare in advance with plant fiber material and pulverized the plant powder that forms, and the liquid state batching that contains the adhesive composition;
B. this plant powder and this liquid state batching is filled with predetermined ratio and part mix, become composite material;
C. dry this composite material, make its moisture content below predetermined value, become the moulding materials;
D. with heated mould this moulding materials heating is pressurizeed, mold the apparatus body of reservation shape; Be that the exhaust of carrying out action is arranged in the pressing mold process, moisture content, gas in the material are discharged;
E. cover the cloth watertight composition on this apparatus body surface;
F. toast covering the apparatus body that is furnished with this watertight composition, promptly finish aforementioned environmental protection utensil after the cooling.
According to claim 1 is described can be by the method for making of the environmental protection utensil of biological decomposition, it is characterized in that, wherein: in step a, the plant fiber material of this plant powder, can be rice husk, wheat husk, bamboo, peanut shell, bagasse, straw, paper pulp ... wherein a kind of, or wherein at least two kinds mixing.
3. can be it is characterized in that according to claim 1 is described wherein: in step a, the particle diameter of this plant powder is the 50-200 order by the method for making of the environmental protection utensil of biological decomposition.
4. can be it is characterized in that according to claim 1 is described that wherein: in step a, main penta part of this liquid state batching is synthetic resin, solvent and curing agent by the method for making of the environmental protection utensil of biological decomposition.
According to claim 4 is described can be by the method for making of the environmental protection utensil of biological decomposition, it is characterized in that, wherein: the synthetic resin in this liquid state batching can be epoxy resin, silicon compound, synthetic rubber, Petropols, EVA, PVA, PVAc ... wherein a kind of, or wherein at least two kinds mixing.
6. can be it is characterized in that according to claim 4 is described that wherein: the solvent in this liquid state batching can be toluene, dimethylbenzene, ethanol by the method for making of the environmental protection utensil of biological decomposition ... wherein a kind of, or wherein at least two kinds mixing.
7. can be it is characterized in that according to claim 1 is described that wherein: in step b, this plant powder accounts for 70-98% by the method for making of the environmental protection utensil of biological decomposition, and should the liquid state batching account for 2-30%.
8. can be it is characterized in that according to claim 1 is described that wherein: in step b, be to utilize high-speed mixer to mix, the time is 30-100 second by the method for making of the environmental protection utensil of biological decomposition.
9. can be it is characterized in that according to claim 1 is described that wherein: in step c, the moisture content of these moulding materials is below 10% by the method for making of the environmental protection utensil of biological decomposition, but and the decomposed substance in these moulding materials account for 86.5-99.1%.
10. can be it is characterized in that according to claim 1 is described that wherein: in steps d, the mold temperature of this heated mould is 50-180 ℃ by the method for making of the environmental protection utensil of biological decomposition, pressure is 25,85kg/cm
2, the pressing mold time is 5-50 second.
11. can be it is characterized in that by the method for making of the environmental protection utensil of biological decomposition according to claim 1 is described, wherein: in steps d, this apparatus body that moulded section goes out, thickness is at 0.5-10mm.
12. can be it is characterized in that by the method for making of the environmental protection utensil of biological decomposition according to claim 1 is described, wherein: between steps d and step c, again this apparatus body is toasted in addition.
13. can be it is characterized in that by the method for making of the environmental protection utensil of biological decomposition according to claim 1 is described, wherein: in step c, be to cover this watertight composition of cloth on this apparatus body surface in the mode of spraying underwater paint.
14. can be it is characterized in that by the method for making of the environmental protection utensil of biological decomposition according to claim 1 is described, wherein: in step c, be to cover this watertight composition of cloth on this apparatus body surface to be stained with the mode of soaking underwater paint.
15. can be it is characterized in that according to claim 1 is described wherein: in step c, the thickness of this watertight composition is 5-30 μ m by the method for making of the environmental protection utensil of biological decomposition.
16. can be it is characterized in that according to claim 1 is described wherein: in step e, only the surface local at this apparatus body covers this watertight composition of cloth by the method for making of the environmental protection utensil of biological decomposition.
17. can be it is characterized in that by the method for making of the environmental protection utensil of biological decomposition according to claim 1 is described, wherein: in step f, be with 80-150 ℃ of baking 5-20 minute.
18. can be it is characterized in that by the method for making of the environmental protection utensil of biological decomposition according to claim 1 is described, wherein: after step f, in the high-temperature baking mode this utensil is carried out the sterilization operation again.
19. can be it is characterized in that by the method for making of the environmental protection utensil of biological decomposition according to claim 1 is described, wherein: after step f, by infrared ray or ultraviolet ray this utensil is carried out the sterilization operation again.
20. one kind can be by the environmental protection utensil of biological decomposition, be with in the claim 1 to 19 wherein any one described method for making made, it is characterized in that its body is to mix the liquid state batching contain adhesive by plant powder, through heating pressurization and moulded section, and its surface is covered and is furnished with watertight composition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02107037 CN1443631A (en) | 2002-03-08 | 2002-03-08 | Environment-protecting bio-degradable appliances and its production method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02107037 CN1443631A (en) | 2002-03-08 | 2002-03-08 | Environment-protecting bio-degradable appliances and its production method |
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| Publication Number | Publication Date |
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| CN1443631A true CN1443631A (en) | 2003-09-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02107037 Pending CN1443631A (en) | 2002-03-08 | 2002-03-08 | Environment-protecting bio-degradable appliances and its production method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104256896A (en) * | 2014-09-30 | 2015-01-07 | 周建平 | Vehicular ashtray and method for manufacturing same |
| FR3117741A1 (en) * | 2020-12-21 | 2022-06-24 | Le Fournil Du Val De Loire | Process for manufacturing a biodegradable molded object |
-
2002
- 2002-03-08 CN CN 02107037 patent/CN1443631A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104256896A (en) * | 2014-09-30 | 2015-01-07 | 周建平 | Vehicular ashtray and method for manufacturing same |
| FR3117741A1 (en) * | 2020-12-21 | 2022-06-24 | Le Fournil Du Val De Loire | Process for manufacturing a biodegradable molded object |
| WO2022136799A1 (en) * | 2020-12-21 | 2022-06-30 | Le Fournil Du Val De Loire | Method for manufacturing a biodegradable molded object |
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