CN105315589A - Production process of plastics for producing garbage bags - Google Patents
Production process of plastics for producing garbage bags Download PDFInfo
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- CN105315589A CN105315589A CN201510859290.XA CN201510859290A CN105315589A CN 105315589 A CN105315589 A CN 105315589A CN 201510859290 A CN201510859290 A CN 201510859290A CN 105315589 A CN105315589 A CN 105315589A
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Abstract
The invention discloses a production process of plastics for producing garbage bags. The plastics are degradable plastics and are produced through the process of compounding polyvinyl alcohol, cellulose, acetone, glycerin and starch. The production process concretely comprises the steps of preparing nanometer starch granules; preparing a cellulose solution; fusing; granulating; and blowing a film to obtain a finished product of plastics for producing garbage bags, wherein the film of the plastics is 20mu m thick, and the plastics have favorable degradable property. The production process disclosed by the invention is high in preparation efficiency; and the prepared plastics are good in quality and low in production cost and can be completely degraded.
Description
Technical field
The invention belongs to degradable plastics technical field, particularly relate to a kind of plastic production technique for the manufacture of refuse bag.
Background technology
Plastics are most widely used macromolecular materials, by volume calculate and occupy first place in the world, and because it is difficult to degraded, along with growing with each passing day of consumption, the white pollution that waste plastic causes has become international public hazards.The plastics-production that China is current and use leap into the front ranks of the world, the nondegradable junk of the millions of ton of annual generation, and severe contamination environment and endangered our health.Refuse bag, as the plastic prod of packaging waste, while treating refuse, too increases the pressure of environment, but have the place of people just to have rubbish, the demand of resident to refuse bag is increasing always, and a large amount of refuse bags causes serious pollution to environment.Visible, developing degradable high polymer material, finding new environment-friendly polymers to make refuse bag has been the task of top priority.
Chinese patent CN201010186412.0 discloses a kind of refuse bag and preparation method thereof.Comprise bag and sack, also comprise thickening mounting block, thickening mounting block is arranged on below bag, thicken the radius that mounting block radius is less than sack, refuse bag entirety, in being inverted frustum shape, thickeies mounting block with paper material or degradation material for raw material, the two-sided bonding common plastics that lays is made, and forming fixing bowl or the shape of dish, its thickness is 1-3 millimeter, is highly the 1/5-1/3 of refuse bag height.But this refuse bag is made with paper material or degradation material bonding common plastics, and quality is unstable, and some can not be degraded, and adds environmental stress.
Chinese patent CN201110207077.2 discloses a kind of starch-based degradable garbage bag material and preparation technology thereof, and its component and part by weight number ratio comprise: water-ground limestone 84-93 part, W-Gum 18-23 part, surface treatment agent 1-1.8 part, POE4-9 part, HDPE54-63 part, polyisobutene 1-3 part.But the tensile strength of this refuse bag is limited, preparation process can not realize continuous prodution, and need its preparing materials again after every batch of production, preparation efficiency is not high.
Therefore be badly in need of that a kind of preparation efficiency is high, preparation quality good, can produce degradable refuse bag plastic production technique, to meet the demand of market to refuse bag material.
Summary of the invention
The present invention is directed to the problems referred to above, a kind of plastic production technique for the manufacture of refuse bag is provided.
The present invention's adopted technical scheme that solves the problem is: a kind of plastic production technique for the manufacture of refuse bag, continuous seepage can be realized, preparation efficiency is high, with short production cycle, these plastics are degradable plastics, and manufacture craft is passed through by polyvinyl alcohol, Mierocrystalline cellulose, acetone, glycerine and starch and is composited, with plant cellulose as one of main raw material, reduce cost of manufacture, manufacture craft comprises the steps:
Prepared by step one, nano-starch particle: starch is crushed to the nano-starch particle that particle diameter is 80nm ~ 100nm, and vacuum bag encapsulation is preserved; Starch is crushed to nano particle, is conducive to starch and other materials merges, and improves the physicals of plastics, and vacuum bag encapsulates, and avoids starch to make moist.
Prepared by step 2, cellulose solution: by vegetable fibre under 30 DEG C of conditions, be dissolved into the LiCl/DMAc(lithium chloride/N,N-dimethylacetamide of 5% ~ 10%) in solution, make stable cellulose solution.
Step 3, fusion: by polyvinyl alcohol, acetone, glycerine, the mixing of nano-starch particle, make mixture, then by mixture and cellulose solution high-speed mixing, remove excess of solvent, obtain fusions.
Step 4, granulation: extruded through twin screw extruder plasticizing by fusions, temperature controls at 110 DEG C ~ 170 DEG C, and rotating speed is 300r/min, is cooled to room temperature after extruding, and then pulverizes granulation.
Step 5, blown film: the plastics after granulation are delivered to inflation film manufacturing machine blown film after pressurization, heating, air blowing, obtains the plastic product that film thickness is 20 μm ~ 100 μm.The plastics of preparation can be degradable, durable, is suitable as refuse bag starting material and uses.
Further, in step 2, in cellulose solution, Mierocrystalline cellulose and LiCl/DMAc(lithium chloride/N,N-dimethylacetamide) weight ratio of solution is 1:10.Mierocrystalline cellulose can fully be dissolved in LiCl/DMAc solution.
Further, in step 3, the weight part of mixture consists of: polyvinyl alcohol 20 parts ~ 30 parts, 10 parts ~ 20 parts, acetone, glycerine 20 parts ~ 30 parts, nano-starch particle 5 parts ~ 7 parts.Starch, Mierocrystalline cellulose, polyvinyl alcohol constitute the material of main part of plastics prepared by preparation method of the present invention, and under the cooperation of organic solvent, physicals is supplemented mutually, and toughness and tensile strength are obtained for raising.
Further, in step 3, the weight ratio of mixture and cellulose solution is: 1:1.
Further, in step 3, high-speed mixing is: rotating speed is 1000r/min ~ 1500r/min, stirs 30 minutes.
Further, in step 3, remove the mode of excess of solvent for filtering laggard step evaporation solvent.Solvent can be reused after filtering, and has saved resource, has reduced production cost.
Further, being operating as of evaporating solvent: under 120 DEG C ~ 150 DEG C conditions, vacuumize process 20 minutes.
Further, in step 4, pulverize and be: pulverize the plastic grain into 3mm × 3mm × 3mm.
Further, in step 5, be pressurised into: be forced into 2 standard atmospheric pressures.
Further, in step 5, be heated to be: temperature controls within the scope of 150 DEG C ~ 180 DEG C.
Advantage of the present invention is:
1. the plastics that prepared by manufacture craft of the present invention can be degradable, durable, is suitable as refuse bag starting material and uses;
2. manufacture craft of the present invention adopts plant cellulose as one of main raw material, reduces cost of manufacture;
3. manufacture craft of the present invention can realize continuous seepage, and preparation efficiency is high, with short production cycle;
4. the solvent in manufacture craft of the present invention can be reused after filtering, and has saved resource, has reduced production cost.
Except object described above, feature and advantage, the present invention also has other object, feature and advantage.Below with reference to embodiment, the present invention is further detailed explanation.
Embodiment
Below in conjunction with embodiment, the present invention is described in detail, but the multitude of different ways that the present invention can be defined by the claims and cover is implemented.
Embodiment 1
A kind of plastic production technique for the manufacture of refuse bag
Manufacture craft comprises the steps:
(1) nano-starch particle preparation: 5kg starch is crushed to the nano-starch particle that particle diameter is 80nm, vacuum bag encapsulation is preserved.
(2) cellulose solution preparation: by 5kg vegetable fibre under 30 DEG C of conditions, be dissolved into the LiCl/DMAc(lithium chloride/N,N-dimethylacetamide of 5%) in solution 50kg, make stable cellulose solution 55kg.
(3) merge: polyvinyl alcohol 20kg, acetone 10kg, glycerine 20kg, nano-starch particle 5kg are mixed, make mixture 55kg, then by mixture and cellulose solution under rotating speed is 1000r/min condition, stir 30 minutes, after filtering under 120 DEG C of conditions, vacuumize process 20 minutes, evaporate remaining solvent, obtain fusions.
(4) granulation: extruded through twin screw extruder plasticizing by fusions, temperature controls at 110 DEG C, and rotating speed is 300r/min, is cooled to room temperature after extruding, then pulverizes the plastic grain for 3mm × 3mm × 3mm.
(5) blown film: by the plastics after granulation through being forced into 2 standard atmospheric pressures, temperature controls, at 150 DEG C, to deliver to inflation film manufacturing machine blown film after air blowing, obtains the plastic product that film thickness is 20 μm, manufactures for refuse bag, has excellent degradability.
Embodiment 2
A kind of plastic production technique for the manufacture of refuse bag
Manufacture craft comprises the steps:
(1) nano-starch particle preparation: 7kg starch is crushed to the nano-starch particle that particle diameter is 100nm, vacuum bag encapsulation is preserved.
(2) cellulose solution preparation: by 10.64kg vegetable fibre under 30 DEG C of conditions, be dissolved into the LiCl/DMAc(lithium chloride/N,N-dimethylacetamide of 10%) in solution 106.36kg, make stable cellulose solution 117kg.
(3) merge: polyvinyl alcohol 30kg, acetone 20kg, glycerine 30kg, nano-starch particle 7kg are mixed, make mixture 117kg, then by mixture and cellulose solution under rotating speed is 1500r/min condition, stir 30 minutes, after filtering under 150 DEG C of conditions, vacuumize process 20 minutes, evaporate remaining solvent, obtain fusions.
(4) granulation: extruded through twin screw extruder plasticizing by fusions, temperature controls at 170 DEG C, and rotating speed is 300r/min, is cooled to room temperature after extruding, then pulverizes the plastic grain for 3mm × 3mm × 3mm.
(5) blown film: by the plastics after granulation through being forced into 2 standard atmospheric pressures, temperature controls within the scope of 180 DEG C, deliver to inflation film manufacturing machine blown film after air blowing, obtain the plastic product that film thickness is 100 μm, manufactures for refuse bag, there is excellent degradability.
Embodiment 3
A kind of plastic production technique for the manufacture of refuse bag
Manufacture craft comprises the steps:
(1) nano-starch particle preparation: starch is crushed to the nano-starch particle that particle diameter is 90nm, vacuum bag encapsulation is preserved.
(2) cellulose solution preparation: by 6.45kg vegetable fibre under 30 DEG C of conditions, be dissolved into the LiCl/DMAc(lithium chloride/N,N-dimethylacetamide of 7.5%) in solution 64.55kg, make stable cellulose solution 71kg.
(3) merge: polyvinyl alcohol 25kg, acetone 15kg, glycerine 25kg, nano-starch particle 6kg are mixed, make mixture 71kg, then by mixture and cellulose solution under rotating speed is 1250r/min condition, stir 30 minutes, after filtering under 135 DEG C of conditions, vacuumize process 20 minutes, evaporate remaining solvent, obtain fusions.
(4) granulation: extruded through twin screw extruder plasticizing by fusions, temperature controls at 140 DEG C, and rotating speed is 300r/min, is cooled to room temperature after extruding, then pulverizes the plastic grain for 3mm × 3mm × 3mm.
(5) blown film: by the plastics after granulation through being forced into 2 standard atmospheric pressures, temperature controls within the scope of 165 DEG C, deliver to inflation film manufacturing machine blown film after air blowing, obtain the plastic product that film thickness is 60 μm, manufactures for refuse bag, there is excellent degradability.
Experimental example 1
In this experimental example, test the performance of plastics prepared by the embodiment of the present invention 1 ~ 3 manufacture craft by experiment.
1. test materials
Experimental group: plastics prepared by the embodiment of the present invention 1 ~ 3 manufacture craft;
Control group: common degradable plastics.
2. test method
Plastics prepared by the test embodiment of the present invention 1 ~ 3 manufacture craft, the indices performance of common degradable plastics.
3. test-results
Analyze after the plastics embodiment of the present invention 1 ~ 3 manufacture craft prepared, the indices performance test of common degradable plastics, experimental result is in table 1.
Table 1. test result
| Material | Degradation rate | Elongation at break/% | Tensile strength/MPa | Yield strength N/mm 2 |
| Plastics prepared by embodiment 1 | 100% | 136.7 | 2.57 | 68 |
| Plastics prepared by embodiment 2 | 100% | 135.9 | 2.51 | 67 |
| Plastics prepared by embodiment 3 | 100% | 133.8 | 2.61 | 68 |
| Common degradable plastics | 70% | 111.8 | 1.82 | 42 |
Experimental result shows, compared with common degradable plastics, the embodiment of the present invention 1 ~ 3 manufacture craft prepare the degradation rate of plastics under square one, elongation at break, tensile strength, yield strength results of property measure be better than common degradable plastics, quality problems can not be there are in normal use procedure.
Experimental example 2
In this experimental example, test the degradation time of plastics prepared by the embodiment of the present invention 1 ~ 3 manufacture craft by experiment.
1. test materials
Experimental group: plastics prepared by the embodiment of the present invention 1 ~ 3 manufacture craft.
2. test method
Plastics prepared by the test embodiment of the present invention 1 ~ 3 manufacture craft are buried in underground, routine observation degraded situation.
3. test-results
Test-results is in table 2.
Table 2. is degraded situation test result
| Material | The degradable time |
| Plastics prepared by embodiment 1 | 10 days |
| Plastics prepared by embodiment 2 | 11 days |
| Plastics prepared by embodiment 3 | 9 days |
Found through experiments, plastics prepared by experimental example 1 ~ 3 manufacture craft of the present invention, be buried in underground under field conditions (factors), can be degradable in 11 days.Experimental result shows, the degradation time of plastics prepared by experimental example 1 ~ 3 manufacture craft of the present invention is fast, and can be degradable, is suitable as garbage bag material.
These are only the preferred embodiments of the present invention and experimental example, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., within the protection domain that all should be included in invention.
Claims (10)
1. for the manufacture of a plastic production technique for refuse bag, these plastics are degradable plastics, it is characterized in that, described manufacture craft is by polyvinyl alcohol, Mierocrystalline cellulose, acetone, glycerine and starch through being composited, and described manufacture craft comprises the steps:
Prepared by step one, nano-starch particle: starch is crushed to the nano-starch particle that particle diameter is 80nm ~ 100nm, and vacuum bag encapsulation is preserved;
Prepared by step 2, cellulose solution: by vegetable fibre under 30 DEG C of conditions, be dissolved in the LiCl/DMAc solution of 5% ~ 10%, make stable cellulose solution;
Step 3, fusion: by polyvinyl alcohol, acetone, glycerine, the mixing of nano-starch particle, make mixture, then by mixture and cellulose solution high-speed mixing, remove excess of solvent, obtain fusions;
Step 4, granulation: extruded through twin screw extruder plasticizing by fusions, temperature controls at 110 DEG C ~ 170 DEG C, and rotating speed is 300r/min, is cooled to room temperature after extruding, and then pulverizes granulation;
Step 5, blown film: the plastics after granulation are delivered to inflation film manufacturing machine blown film after pressurization, heating, air blowing, obtains the plastic product that film thickness is 20 μm ~ 100 μm.
2. manufacture craft according to claim 1, is characterized in that, in step 2, in described cellulose solution, the weight ratio of Mierocrystalline cellulose and LiCl/DMAc solution is 1:10.
3. manufacture craft according to claim 1, is characterized in that, in step 3, the weight part of described mixture consists of: polyvinyl alcohol 20 parts ~ 30 parts, 10 parts ~ 20 parts, acetone, glycerine 20 parts ~ 30 parts, nano-starch particle 5 parts ~ 7 parts.
4. manufacture craft according to claim 1, is characterized in that, in step 3, the weight ratio of described mixture and cellulose solution is: 1:1.
5. manufacture craft according to claim 1, is characterized in that, in step 3, described high-speed mixing is: rotating speed is 1000r/min ~ 1500r/min, stirs 30 minutes.
6. manufacture craft according to claim 1, is characterized in that, in step 3, the mode of described removal excess of solvent is for filtering laggard step evaporation solvent.
7. manufacture craft according to claim 6, is characterized in that, being operating as of described evaporating solvent: under 120 DEG C ~ 150 DEG C conditions, vacuumize process 20 minutes.
8. manufacture craft according to claim 1, is characterized in that, in step 4, described pulverizing is: pulverize the plastic grain into 3mm × 3mm × 3mm.
9. manufacture craft according to claim 1, is characterized in that, in step 5, described in be pressurised into: be forced into 2 standard atmospheric pressures.
10. manufacture craft according to claim 1, is characterized in that, in step 5, described in be heated to be: temperature controls within the scope of 150 DEG C ~ 180 DEG C.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510859290.XA CN105315589A (en) | 2015-12-01 | 2015-12-01 | Production process of plastics for producing garbage bags |
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| CN201510859290.XA CN105315589A (en) | 2015-12-01 | 2015-12-01 | Production process of plastics for producing garbage bags |
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| CN105315589A true CN105315589A (en) | 2016-02-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20210309848A1 (en) * | 2020-04-02 | 2021-10-07 | Singular Solutions Inc. | Plastic pro-biodegradation additives, biodegradable plastic compositions, and related methods |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010053046A (en) * | 1998-06-20 | 2001-06-25 | 클라우스-디터 포어롭 | Process for preparing a polyvinyl alcohol gel and mechanically highly stable gel produced by this process |
| CN102079822A (en) * | 2010-10-20 | 2011-06-01 | 曾广胜 | Plant fiber enhanced starch composite packaging material and preparation method thereof |
| CN103059349A (en) * | 2012-11-23 | 2013-04-24 | 高凡 | Novel starch-based cellulose degradable plastic film |
-
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- 2015-12-01 CN CN201510859290.XA patent/CN105315589A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010053046A (en) * | 1998-06-20 | 2001-06-25 | 클라우스-디터 포어롭 | Process for preparing a polyvinyl alcohol gel and mechanically highly stable gel produced by this process |
| CN102079822A (en) * | 2010-10-20 | 2011-06-01 | 曾广胜 | Plant fiber enhanced starch composite packaging material and preparation method thereof |
| CN103059349A (en) * | 2012-11-23 | 2013-04-24 | 高凡 | Novel starch-based cellulose degradable plastic film |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20210309848A1 (en) * | 2020-04-02 | 2021-10-07 | Singular Solutions Inc. | Plastic pro-biodegradation additives, biodegradable plastic compositions, and related methods |
| US11820881B2 (en) * | 2020-04-02 | 2023-11-21 | Singular Solutions Inc. | Plastic pro-biodegradation additives, biodegradable plastic compositions, and related methods |
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