CN110003574B - Environment-friendly tableware - Google Patents
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- CN110003574B CN110003574B CN201910221299.6A CN201910221299A CN110003574B CN 110003574 B CN110003574 B CN 110003574B CN 201910221299 A CN201910221299 A CN 201910221299A CN 110003574 B CN110003574 B CN 110003574B
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/14—Copolymers of propene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- Table Devices Or Equipment (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention aims to provide environment-friendly tableware which is easy to degrade, has good waterproof effect and smoothness and strength, can meet the use requirement and is simple in preparation process, and the environment-friendly tableware is prepared from the following raw materials: 50-85 parts by mass of inorganic mineral powder; 15-23 parts by mass of polyethylene; 15-22 parts by mass of polypropylene; and 3-5 parts by mass of an auxiliary agent, wherein the density of the polypropylene is 800kg/m3～1000kg/m3The copolymer polypropylene of (3).
Description
Technical Field
The invention belongs to the field of daily necessities, and relates to environment-friendly tableware.
Background
Disposable tableware such as disposable spoons, bowls, cups and the like are mostly made of plastics and are widely applied to the catering industry. Due to the scattered use, the disposable tableware is usually discarded randomly after use, thereby seriously polluting the environment; even if the disposable tableware is intensively treated after use, the disposable tableware is difficult to recycle due to the contamination of food residues, and generally can be only buried or burned, which also has serious harm to the environment.
In order to reduce environmental pollution, various environment-friendly disposable tableware have appeared in the prior art. The environment-friendly disposable tableware is mainly made of materials such as starch or plant fiber and has biodegradability, so that the environmental pollution is less no matter the tableware is discarded or buried and burned. However, the biodegradable materials usually require chemical reagents such as acid and alkali for denaturation treatment in the manufacturing process, and a large amount of waste water is generated in the process, so that the biodegradable materials are still harmful to the environment. In addition, since biodegradable materials generally have a certain hydrophilicity and are not strong enough in rigidity and toughness, and it is not desirable to use excessive treatment (for example, hydrophobic treatment with a reagent) during production in order to ensure health, the above-mentioned disposable tableware is generally not satisfactory in water-repellent effect and surface smoothness, and is not strong enough to affect the feeling of use, and thus is difficult to popularize.
Disclosure of Invention
In order to solve the problems, the invention provides the environment-friendly tableware which is easy to degrade, has good waterproof effect and smoothness, can meet the use requirement in strength and has simple preparation process, and the invention adopts the following technical scheme:
the invention provides environment-friendly tableware, which is characterized in that: the environment-friendly tableware is prepared from the following raw materials: 50-85 parts by mass of inorganic mineral powder; 15-23 parts by mass of polyethylene; 15-22 parts by mass of polypropylene; and 3-5 parts by mass of an auxiliary agent, wherein the density of the polypropylene is 800kg/m3～1000kg/m3The copolymerized polypropylene of (1).
The environment-friendly tableware provided by the invention can also have the technical characteristics that the auxiliary agent comprises a heat stabilizer, a polyolefin elastomer, a lubricant and a surface modifier, wherein the heat stabilizer is BASF225, the lubricant is one or a mixture of zinc stearate L-806 and PP wax, and the surface modifier is one or a mixture of PN-827 and stearic acid 1801.
The environment-friendly tableware provided by the invention can also have the technical characteristics that the auxiliary agent also comprises a biodegradation agent, and the addition amount of the biodegradation agent is 0.5-1% of the total mass of all the raw materials.
The environment-friendly tableware provided by the invention can also have the technical characteristics that the inorganic mineral powder is one or a mixture of more of calcium carbonate, calcium sulfate, copper sulfate, silicon dioxide, bentonite, silver stone powder, clay, talcum powder, chalk powder, zinc oxide, hollow glass beads, gravel powder, waste coal cinder powder, waste coal gangue powder, waste building material stone powder and air PM2.5 dust collection.
The environment-friendly tableware provided by the invention can also have the technical characteristics that the inorganic mineral powder is calcined calcium carbonate or uncalcined calcium carbonate with the average particle size of 1-5 mu m.
The environment-friendly tableware provided by the invention can also have the technical characteristics that the preparation method of the environment-friendly tableware comprises the following steps: s1, weighing 70-85 parts by mass of inorganic mineral powder, 15-23 parts by mass of polyethylene, 15-22 parts by mass of polypropylene and 3-5 parts by mass of an auxiliary agent, adding into a mixer, and mixing at a rotating speed of 100-130 r/min for 20-25 minutes to obtain a raw material mixture; step S2, continuously banburying the raw material mixture at 180-250 ℃, and carrying out high-speed granulation on the banburied melt to obtain master batches; step S3, drying, exhausting and dehydrating the master batch to obtain dry master batch; and S4, injection molding the dried master batch by using injection molding equipment to obtain the environment-friendly tableware, wherein the dehydration condition in the step S3 is to dehydrate the master batch until the water content is less than one ten thousandth of the mass ratio.
The environment-friendly tableware provided by the invention can also have the technical characteristics that the injection molding process comprises the following steps: and extracting the dried master batch into a storage bin of injection molding equipment, heating to 280-320 ℃, filling into a mold, maintaining the pressure, exhausting to cool, cooling, and demolding to obtain the environment-friendly tableware.
The tableware of the present invention may have a technical feature that the dehydration in step S3 is performed by a vacuum dehydration apparatus.
Action and Effect of the invention
According to the environment-friendly tableware provided by the invention, 50-85 parts by mass of inorganic mineral powder, 15-23 parts by mass of polyethylene, 15-25 parts by mass of polypropylene and 3-5 parts by mass of an auxiliary agent are adopted to prepare the tableware, and the polypropylene is copolymerized polypropylene with the density of 800kg/m 3-1000 kg/m3, so that the tableware is good in appearance and strength, good in heat resistance and water resistance, almost free of powder removal, good in degradability, suitable for daily use, free of white pollution and capable of meeting the requirement of environment protection.
Detailed Description
The following examples are given to illustrate specific embodiments of the present invention.
< example one >
The environment-friendly tableware of the first embodiment is bowl-shaped and is formed by adopting a conventional bowl-shaped mould, so that the dimension and the specification are the same as those of a conventional disposable plastic bowl (specifically, the outer diameter is 8cm, the depth is 5cm, and the thickness is 0.2 cm).
The preparation process of the environment-friendly tableware of the embodiment comprises the following steps:
s1, weighing 70-85 parts by mass of inorganic mineral powder, 15-23 parts by mass of polyethylene, 15-22 parts by mass of polypropylene and 3-5 parts by mass of an auxiliary agent, adding into a mixer, and mixing at a rotating speed of 100-130 r/min for 20-25 minutes to obtain a raw material mixture;
step S2, continuously banburying the raw material mixture at 180-250 ℃, and carrying out high-speed granulation on the banburied melt to obtain master batches;
step S3, drying, exhausting and dehydrating the master batch to obtain dry master batch;
and step S4, injection molding the dried master batches by using injection molding equipment to obtain the environment-friendly tableware. The specific injection molding process comprises the following steps: and extracting the dried master batch into a storage bin of injection molding equipment, heating to 280-320 ℃, filling into a mold, maintaining the pressure, exhausting to cool, cooling, and demolding to obtain the environment-friendly tableware.
In this embodiment, the specific conditions of each step are as follows:
the specific addition amounts of the components used in step S1 are: 78 parts by mass of inorganic mineral powder, 16 parts by mass of polyethylene, 20 parts by mass of polypropylene and an auxiliary agent.
Wherein the polypropylene has a density of 905kg/m3The polypropylene copolymer is obtained by mixing a plurality of commercially available polypropylene copolymers, and sampling and detecting after mixing the polypropylene copolymers to obtain the polypropylene copolymer with the average density of 905kg/m3. These commercially available copolypropylenes vary in their respective brands, including but not limited to, Singapore chemical AW564, the Mognonian petrochemical EPC30R-H, the Guangzhou petrochemical J641, the Samsung BJ-750, and the like.
The auxiliary agents comprise polyolefin elastomer, BASF225 as a heat stabilizer, zinc stearate L-806 and PP wax as lubricants, PN-827 as a surface modifier and stearic acid 1801, and the specific adding amount of each auxiliary agent is as follows:
polyolefin elastomer: 2 parts by mass;
BASF 225: 1 part by mass;
zinc stearate L-806: 0.05 part by mass;
PP wax: 0.03 part by mass;
PN-827: 0.3 part by mass;
stearic acid 1801: 0.3 part by mass.
In addition, the mixing speed in step S1 is 110r/min, the mixing time is 25 minutes, and the inorganic ore powder is calcined calcium carbonate with the average particle size of about 3 μm.
The continuous banburying temperature condition of the step S2 is 245 ℃.
In step S3, the drying temperature is controlled within 60-70 ℃, the dehydration is carried out by vacuum dehydration equipment, and the dehydration condition is that the master batch is dehydrated until the water content is less than one ten thousandth according to the mass ratio. The specific value of the water content in this example is 0.095% by mass.
In step S4, the injection molding apparatus has a storage bin, a heating portion, a filling portion, and a mold, and the specific structure and the working principle are the same as those of the existing injection molding apparatus suitable for plastic injection molding products, and are not described herein again. In addition, the cooling liquid for cooling the mold in the embodiment adopts frozen saline water, so that the mold and the bowl blank therein are rapidly cooled to the demolding temperature.
< example two >
In the second embodiment, the same methods and conditions as those in the first embodiment are not described.
In the second embodiment, the steps of the preparation method and the process conditions of the environment-friendly tableware are the same as those of the first embodiment, but the raw materials are different, and specifically, the steps are as follows:
the density of the polypropylene is 898kg/m3The polypropylene copolymer is obtained by mixing a plurality of commercially available polypropylene copolymers, and sampling and detecting after mixing the polypropylene copolymer to obtain the polypropylene copolymer with the average density of 898kg/m3. The rest is the same as the first embodiment.
Therefore, the density of the co-polypropylene used in this example was relatively low compared to that of example one.
< example three >
In the third embodiment, the same methods and conditions as those in the first embodiment are not described.
In the third embodiment, the steps of the preparation method, the addition of raw materials and the process conditions of the environment-friendly tableware are the same as those of the first embodiment, but the types of the raw materials are different, and specifically, the steps are as follows:
whereinThe density of the polypropylene is 910kg/m3The polypropylene copolymer is obtained by mixing a plurality of commercially available polypropylene copolymers, and sampling and detecting the mixture to obtain the polypropylene copolymer with the average density of 910kg/m3. The rest is the same as the first embodiment.
Therefore, the co-polypropylene used in this example has a relatively high density compared to example one.
< comparative example A >
In the first comparative example, the steps of the preparation method, the addition of raw materials and the process conditions of the environment-friendly tableware were the same as those in the first example, but the types of the raw materials were different, specifically:
wherein the polypropylene has a density of 905kg/m3And the left and right homo-polypropylenes are obtained by mixing several commercially available homo-polypropylenes to form a homo-polypropylene mixture with the density basically the same as that of the co-polypropylene in the first example.
Therefore, in comparison with the first example, the polypropylene used in the present comparative example is homopolypropylene.
< comparative example II >
In the second comparative example, the raw materials of the environmentally friendly tableware do not contain polypropylene, and the other preparation method steps, the types and the addition of the raw materials, and the process conditions are the same as those of the first example.
< comparative example III >
In the third comparative example, the steps of the preparation method, the amounts of the raw materials and the process conditions of the environment-friendly tableware were the same as those of the first example, but polyethylene was not added to the raw materials.
< comparative example four >
In the fourth comparative example, the steps of the preparation method, the amount of the raw materials added and the process conditions of the environmental-friendly tableware were the same as those of the first example, but the master batch was simply dried without dehydration, and the water content of the finally obtained dried master batch was about four parts per million.
Examples effects and effects
The environmental tableware (i.e., environmental bowl) of each of the above examples and comparative examples was subjected to a performance test. In addition, in order to illustrate the difference between the environment-friendly tableware according to the present invention and the common disposable plastic tableware, the common commercially available plastic bowl of the same size was used as a control sample in the test process.
The performance tests include appearance tests, strength tests, drop tests, heat resistance tests, water leakage tests, dusting tests, and degradation tests.
Wherein, the appearance test is to visually observe whether the product appearance is smooth and regular or not, and whether the product has cracks, burrs and other defective phenomena under a lamp.
The strength test adopts a load test mode, the specific operation is that a bowl is placed between two pieces of flat glass, then a weight is placed in the center of the upper side glass, then the height difference between the two pieces of glass before and after the weight is placed is measured by a ruler, and the height change percentage is calculated.
The drop test was carried out by freely dropping the bowl from a height of about 1m to the cement floor and observing whether the bowl was intact.
The heat resistance test is that the bowl is immersed in hot water of more than 90 ℃ for 10 minutes, then the bowl is taken out to observe whether the bowl body is deformed or not and is filled with normal temperature water to observe whether water leaks or not, and if the bowl body is not deformed or does not leak, the heat resistance is good.
The water leakage test consisted of immersing the bowl in room temperature water for 72 hours, then taking out the swab to dry, refilling with water and observing for leaks.
The powder removal test adopts an observation method, namely, a bowl is taken and cut into a plurality of small pieces, the small pieces are mutually rubbed, whether the powder removal phenomenon exists at the friction part is observed, and the number of the small pieces generated by powder removal is divided by the total number of the small pieces to serve as the powder removal rate.
The degradation test procedure was: a plurality of bowls were cut into small pieces having the same area, the time required for each piece to degrade under natural ultraviolet (i.e., ultraviolet equivalent to the intensity of ultraviolet contained in natural sunlight) to a form that lost intact pieces (i.e., a form that formed fine chips or powder) was recorded, and the average value was taken as the degradation time.
Table 1 below shows the performance test results of the eco-friendly bowls prepared in the above examples and comparative examples, wherein "control" in the table refers to a common commercially available disposable plastic bowl.
TABLE 1 environmental tableware Performance parameters of examples and comparative examples
| Group of | Appearance of the product | Variation of load | Falling down | Heat resistance | Leakage of water | Powder removal rate | Degradation time (Tian) |
| Example one | Good effect | 0.9％ | Intact | Good effect | Water-tight | <0.5％ | 190 |
| Example two | Good effect | 1.3％ | Is intact | Good effect | Water-tight | <0.5％ | 190 |
| EXAMPLE III | Good effect | 0.5％ | Intact | Good effect | Water-tight | <0.5％ | 195 |
| Comparative example 1 | Good effect | 5.5％ | With fine cracks | Good effect | Slight leakage | <0.5％ | 175 |
| Comparative example II | The surface is not smooth | 9.5％ | Intact | With deformation | Slight leakage | 5％ | 145 |
| Comparative example III | Is good | 0.5％ | With cracks | Good effect | Good effect | 2％ | 185 |
| Comparative example four | The surface is not smooth | 1.1％ | Intact | With deformation | Slight leakage | 5％ | 165 |
| Control | Good effect | 1.3％ | Intact | Is intact | Intact | No powder falling phenomenon | Does not degrade |
As shown in table 1, the environmental friendly tableware according to the first to third examples had good appearance, good strength (load bearing property and drop property), good heat resistance and water resistance, and hardly had powder falling, and thus could satisfy the use requirements of tableware. Meanwhile, the environment-friendly tableware of the embodiment is degraded in about six months, so that white pollution can not be generated even if the tableware is not recycled, and the environment-friendly tableware is more environment-friendly.
The higher powder removal rate of comparative example two compared to example one indicates that polypropylene is effective in inhibiting powder removal. Meanwhile, the surface of the second comparative example is not smooth, the strength is relatively poor, and the heat and water resistance is poor, which shows that the polypropylene also has the effects of improving the strength and the heat and water resistance.
Further, compared with the first embodiment, the first embodiment has relatively low strength and unsatisfactory heat and water resistance, which indicates that the copolymerized polypropylene has more remarkable improvement on the performances than the homopolymerized polypropylene, and is more suitable for being applied to environment-friendly tableware. The environmental protection tableware added with the polypropylene copolymer can meet the use requirements of the tableware, so the environmental protection tableware should adopt the polypropylene copolymer rather than the polypropylene homopolymer.
The third comparative example has a poorer drop resistance compared to the first example, which shows that the product toughness is beneficial after the polyethylene and the co-polypropylene are mixed.
Compared with the first embodiment, the fourth comparative embodiment has unsatisfactory heat resistance and water resistance, and the moisture content of the dried master batch is controlled to be less than ten thousandth, which is favorable for improving the heat resistance and water resistance of the finished product.
In addition, the inventor also carries out comparative tests on various auxiliary agents, and finds that when no heat stabilizer or antioxidant is added, the resin is rapidly oxidized and aged in the heating process and cannot be molded; when no lubricant is added, the raw materials are difficult to mix and have poor fluidity, and the raw materials cannot be successfully extruded to form master batches with good shapes, even if the master batches are formed, the master batches are difficult to uniformly melt during injection molding, and a blank cannot be uniformly filled into a mold, so that the product is deformed or pits or bubbles are formed on the surface of the product. Therefore, the tableware molding is affected without adding a heat stabilizer, an antioxidant and a lubricant, and even if the tableware is molded just barely, all the properties are not ideal, and the normal use requirements cannot be met.
Therefore, according to the environment-friendly tableware provided by the embodiment, 50-85 parts by mass of inorganic mineral powder, 15-23 parts by mass of polyethylene, 15-25 parts by mass of polypropylene and 3-5 parts by mass of an auxiliary agent are adopted to prepare the tableware, and the polypropylene is copolymerized polypropylene with the density of 800kg/m 3-1000 kg/m3, so that the tableware is good in appearance and strength, good in heat and water resistance, almost free of powder removal and good in degradability, suitable for daily use, free of white pollution and capable of meeting the requirement of environment protection.
Further, since the additives of the above examples further contain a heat stabilizer and an antioxidant, the injection molding process can be smoothly completed, and thus a product having a good appearance can be obtained.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concept. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
For example, in the above embodiments, the inorganic mineral powder is calcium carbonate, but other kinds of inorganic mineral powder, such as one or a mixture of several of calcium sulfate, copper sulfate, silica, bentonite, silver stone powder, clay, talc, chalk powder, zinc oxide, hollow glass beads, gravel powder, waste coal cinder powder, waste coal gangue powder, waste building material powder, and air PM2.5 dust collection, may also be used in the present invention. When tableware which needs to be directly contacted with food is prepared, materials which are clean, non-toxic and meet the health requirements, such as calcium carbonate, talcum powder and the like, are considered; other types of inorganic mineral powder materials, such as waste coal dust, waste coal gangue dust, etc., may also be used in the preparation of tableware that does not require direct contact with food, such as cutlery box surrounds.
In the above embodiments, the auxiliary mainly includes a polyolefin elastomer, a thermal stabilizer, a lubricant, a surface modifier, etc., and these auxiliary, in combination with the main raw material, can achieve photodegradation of the environmentally friendly tableware without adding a photodegradation agent (e.g., a photodegradation agent applied to degradable plastics). In the present invention, in order to further improve the degradation performance, the inventors also tested various prior art degradation agents (including a biological degradation agent and a photodegradation agent applied to degradable plastics), and found that when the biological degradation agent is added and the mass percentage of the addition is 0.5% to 1% (based on the total mass of all raw materials), the environment-friendly tableware has substantially the same physical properties as the environment-friendly tableware of example one, and can be further completely degraded into a powder shape in about two years after being degraded into a pellet shape or a granule shape. Compared with the embodiment, the environment-friendly tableware is more thoroughly degraded and environment-friendly. In addition, the biological degradation agent does not contain components harmful to health such as heavy metals (the photodegradable agent usually contains the components), so that the tableware does not contain toxic components by adding the biological degradation agent, and the requirement of health is met.
In the above embodiments, the environmental protection tableware is prepared into the form of disposable environmental protection bowl through the bowl-shaped mold, but in the present invention, if other forms of molds are adopted, the environmental protection tableware can also be prepared into other common tableware forms, including lunch boxes, plates, dishes, knives, forks, spoons, chopsticks, cups, pots, and the like.
Claims (5)
1. An environment-friendly tableware, which is characterized in that:
the environment-friendly tableware is prepared from the following raw materials:
70-85 parts by mass of calcium carbonate;
15-23 parts by mass of polyethylene;
15-22 parts by mass of polypropylene; and
3 to 5 parts by mass of an auxiliary agent,
wherein the polypropylene has a density of 800kg/m3 ~ 1000 kg/m3 The (2) copolymer polypropylene of (a),
the preparation method of the environment-friendly tableware comprises the following steps:
step S1, weighing 70-85 parts by mass of calcium carbonate, 15-23 parts by mass of polyethylene, 15-22 parts by mass of polypropylene and 3-5 parts by mass of an auxiliary agent, adding into a mixing machine, and mixing at a rotating speed of 100-130 r/min for 20-25 minutes to obtain a raw material mixture;
step S2, continuously banburying the raw material mixture at 180-250 ℃, and carrying out high-speed granulation on the melt obtained after banburying to obtain master batches;
step S3, drying, exhausting and dehydrating the master batch to obtain dry master batch; step S4, injection molding the dried master batch by injection molding equipment to obtain the environment-friendly tableware,
and in the step S3, the master batch is dehydrated by vacuum dehydration equipment under the condition that the water content of the master batch is less than one ten thousandth of the mass ratio.
2. The environmentally friendly tableware according to claim 1, wherein:
wherein the auxiliary agent comprises a heat stabilizer, a polyolefin elastomer, a lubricant and a surface modifier,
the heat stabilizer is BASF225, the lubricant is one or a mixture of zinc stearate L-806 and PP wax,
the surface modifier is one or a mixture of PN-827 and stearic acid 1801.
3. The environmentally friendly tableware according to claim 2, wherein:
the auxiliary agent also comprises a biodegradation agent, and the addition amount of the biodegradation agent is 0.5-1% of the total mass of all raw materials.
4. The environmentally friendly tableware according to claim 1, wherein:
wherein the calcium carbonate is calcined calcium carbonate or uncalcined calcium carbonate with the average particle size of 1-5 mu m.
5. The environmentally friendly tableware according to claim 1, wherein: wherein the injection molding process comprises the following steps: and extracting the dried master batch into a bin of the injection molding equipment, heating to 280-320 ℃, filling into a mold, maintaining the pressure, exhausting gas, cooling, and demolding to obtain the environment-friendly tableware.
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| CN107353479A (en) * | 2017-08-03 | 2017-11-17 | 杨金龙 | A kind of stone paper dishware and preparation method thereof |
| CN108750267A (en) * | 2018-07-25 | 2018-11-06 | 浙江山联新材料科技有限公司 | A kind of environmental protection corrugation case |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6812493B2 (en) | 2021-01-13 |
| CN110003574A (en) | 2019-07-12 |
| JP2020151445A (en) | 2020-09-24 |
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