CN107083075A - A kind of biodegradable stalk disposable product and preparation method thereof - Google Patents
A kind of biodegradable stalk disposable product and preparation method thereof Download PDFInfo
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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
- C08L97/00—Compositions of lignin-containing materials
- C08L97/02—Lignocellulosic material, e.g. wood, straw or bagasse
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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
- C08L1/00—Compositions of cellulose, modified cellulose or cellulose derivatives
- C08L1/02—Cellulose; Modified cellulose
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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
- C08L3/00—Compositions of starch, amylose or amylopectin or of their derivatives or degradation products
- C08L3/02—Starch; Degradation products thereof, e.g. dextrin
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/04—Polyesters derived from hydroxycarboxylic acids, e.g. lactones
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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
- C08L2201/06—Biodegradable
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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
- C08L2203/00—Applications
- C08L2203/14—Applications used for foams
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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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- 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
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
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- Polymers & Plastics (AREA)
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Abstract
The present invention relates to table ware manufacturing technology field, and in particular to a kind of biodegradable stalk disposable product and preparation method thereof, is made up of following raw material：Powder of straw, starch, fiber, glycerine, biological plastics, releasing agent, accelerator, water；The present invention is using waste plant straws as raw material; greatly reduce production cost; and it is aided with the obtained foaming disposable product of a variety of function additives; any toxic component will not be produced after the disposable product is heated; and the material that can be changed under field conditions (factors) after the material being easily degraded, and degraded can also carry out recycling, realize safety and environmental protection; the environment concept of twice laid, effective environmental protection.
Description
Technical field
The present invention relates to table ware manufacturing technology field, and in particular to a kind of biodegradable stalk disposable product and its
Preparation method.
Background technology
Traditional disposable tableware, refers mainly to polystyrene tableware, and quick, side of living is pursued due to having catered to contemporary people
Just, hygienic requirement, adds with low cost, once appearance, is just applied and promotes rapidly in worldwide, but by
In the difficult degradation of polystyrene, greatly pollution is caused to environment, with rapid development of economy and to environmental protection consciousness
Enhancing, it is originally welcome, quickly and easily, the disposable polystyrene tableware of non-degradable, limit is classified as by national departments concerned
Phase obsolete product；In addition, food plastic packaging material is widely used with the advantage such as its light, inexpensive, waterproof, easy to carry,
China carries out food plastic packaging material production permit management, is mainly polyethylene available for food packaging plastic material
(PE), polypropylene (PP), polyethylene terephthalate (PET), polyamide (PA), makrolon (PC), polystyrene
(PS), polyvinyl chloride (PVC), polyvinylidene chloride (PVDC) etc., but be due to the difficult degradation of polymer, are caused greatly to environment
Pollution, and in recent years food with plastics packed safe and healthy situation increasingly by public attention, in China《Food is moulded
Expect the production of articles Hygienic license examination detailed rules and regulations such as packaging, container, instrument》When regulation food is produced with plastic packet product, it is necessary to use
Food raw and auxiliary material, however, some enterprises are in order to reduce cost, is produced, some enterprises are even with the material of technical grade
The reclaimed materials used is and above-mentioned as packaging for foodstuff raw material《Detailed rules and regulations》Middle clear stipulaties must not use outsourcing reclaimed materials and contaminated
Raw material.The wide material sources of reclaimed materials, complicated component, what is had is probably medical wastes, and some possibility contacted some discarded objects,
New pollution may be brought during circulation recycling channel；In regeneration process, it can also add some plasticizer, cover
The material that agent etc. is detrimental to health, increases the risk moved in food.In addition, some packaging for foodstuff enterprises are in order to drop
Low production cost, adds the inorganic mineral inserts such as substantial amounts of calcium carbonate and talcum powder, is easily caused product evaporation residue significantly
It is exceeded, when containing acid or fat foods, easily separate out and adhere on food, cholelithiasis etc. is easily formed after consumer is edible and is asked
Topic.
According to statistics, about 900,000,000 tons of the annual agricultural crop straw yield of China, but a large amount of reusable edibles of China are in agriculture at present
The debirs of industry are slatterned by substantial amounts of, and cause huge pollution (appropriation of land, contaminated soil, polluted-water, pollution
Air, influence environmental sanitation), it is also to make many peasant households, plantation industrial park, cooperative society and the functional authorities of governments at all levels supervisor
Leader's headache thing endlessly, in consideration of it, by disposable tableware, all kinds of packing articles, all types of plastic product and agricultural crop straw knot
Altogether, manufacture a kind of does not only have contamination hazard, to people's safety non-toxic, with low cost but also can fully degrade, make to ecological environment
With the plastic tableware substitute products for the comprehensive advantage such as performance is good, plantation economy benefit and social benefit can be both improved, moreover it is possible to have
Effect reduces environmental pollution, reduces the harm to the mankind, meets the consumption demand of the common people and the state basic policy of green ecological civilization construction, profit
State is favorable to the people, serves multiple.
The content of the invention
The present invention is in order to solve the above technical problems, there is provided a kind of biodegradable stalk disposable product and its preparation side
Method.
Realized particular by following technical scheme：
A kind of biodegradable stalk disposable product, is made up of raw material in parts by mass：Powder of straw 20~50, shallow lake
Powder 15~45, fiber 10~30, glycerine 0.5~5, biological plastics 8~30, releasing agent 0.5~5, accelerator 0.1~0.5, water 30
~60.
Preferably, it is made up of raw material in parts by mass：Powder of straw 35, starch 28, fiber 20, glycerine 2.8, biology
Plastics 18, releasing agent 3, accelerator 0.3, water 45.
Described powder of straw, is by the one or more in straw, sugarcane, rice husk, reed, cornstalk, sweet potato vine, melon vine
Composition, is dried, and is crushed, and crosses 60~120 mesh sieves, you can.
Described starch, is cornstarch, tapioca, starch from sweet potato, farina, rice starch, wheaten starch
In one or more mixtures.
Described fiber, is the one or more in wood pulp cellulose, straw pulp fiber, sugarcane slurry, cotton pulp, reed pulp.
Described biological plastics, is the one or more in PHA, PLA, polycaprolactone.
Described releasing agent, is stearic acid, zinc stearate, magnesium stearate, silicone oil, methyl-silicone oil, synthesis paraffin, microlite
One or more mixtures in wax.
Described accelerator, is the one or more in lauryl sodium sulfate, white foaming agent, urea, sodium bicarbonate.
The preparation method of described biodegradable stalk disposable product, it is characterised in that be by raw material powder of straw, form sediment
Powder, fiber, glycerine, biological plastics, releasing agent and accelerator are mixed in proportion, add water and are tuned into paste, and mould is put on demand and is worked as
In, it is heated to 16~240 DEG C, it is i.e. plastic after 25~40s.
Described biodegradable stalk disposables, can as all kinds of disposable tablewares or existing product substitute, also
Available for the product packaging that disappears soon, the seedlings nursing plate of planting industry, the support of all kinds of commodity packagings, it is packed for filler.
In summary, the beneficial effects of the present invention are：The present invention greatly reduces life using waste plant straws as raw material
Cost is produced, and is aided with a variety of function additives foaming disposable product is made, will not be produced after the disposable product is heated any has
Malicious composition, and the material that can be changed under field conditions (factors) after the material being easily degraded, and degraded can also be reclaimed again sharp
With realizing safety and environmental protection, the environment concept of twice laid, effective environmental protection；The disposable product of the present invention has higher
Biological degradation rate, its physical property, sanitation performance can be met《Plastics disposable food or beverage container generic specifications》(GB
18006.1-2009) standard.Specifically also there is following practical effect：
1st, this product safety, health, environmental protection, can natural degradation, in soil can as crop fertilizer, can also rise
The feed of all kinds of animals can be made by being reclaimed to the effect of improved soil, after degraded；
2nd, product hardness is good, abundant steady, light weight, shockproof, insulation, heat-insulated, sound insulation value are good etc., and close the knitting property of product is good,
It is water-fast, oil resistant, impermeable, while there is good resistance to elevated temperatures, nontoxic, harmless, pollution-free, safety, health, fast decoupled,
Can as plastics, paper products, ceramics, glass etc. substitute.
3rd, the substitute of all kinds of disposable tablewares or existing product can be used for, for the product packaging (1) that disappears soon, quick bread dress
Box, quick powder packing box, facilitate rice packet mounted box, instant gruel packing box；(2), leisure beverage packaging cup, market, shop, eating and drinking establishment
Deng for packing boxes such as beverage, gruels；(3), the Neto of leisure food, commodity, drinks；(4), fast food, breakfast project, egg-pair
White engineering, family etc. are intended to packing box, cup, box, disk used etc., all kinds of vegetables of supermarket, melon and fruit, egg, food packaging bag/
Box.
4th, as the nursery of modern planting industry：Meet the market demand of domestic nursery industry at present.
5th, as the support of all kinds of commodity packagings：Substituted for plastic, corrugated board, honeycomb cardboard, paper pulp die etc..
6th, as being packed for filler/packing：Packing space, solid thing positioning, buffering shock-absorbing, discharge are damaged.
Embodiment
The embodiment to the present invention is described in further detail below, but the invention is not limited in these realities
Mode is applied, any improvement or replacement on the present embodiment essence spirit still falls within the claims in the present invention claimed
Scope.
Embodiment 1
A kind of biodegradable stalk disposable product, is made up of raw material in parts by mass：Powder of straw 20kg, starch
15kg, fiber 10kg, glycerine 0.5kg, biological plastics 8kg, releasing agent 0.5kg, accelerator 0.1kg, water 30kg.
The preparation method of described biodegradable stalk disposable product, be by raw material powder of straw, starch, fiber, glycerine,
Biological plastics, releasing agent and accelerator mix in proportion, add water and are tuned into paste, are put among bowl-type mould, are heated to 200 DEG C,
It is i.e. plastic after 30s.
Embodiment 2
A kind of biodegradable stalk disposable product, is made up of raw material in parts by mass：Powder of straw 50kg, starch
45kg, fiber 30kg, glycerine 5kg, biological plastics 30kg, releasing agent 5kg, accelerator 0.5kg, water 60kg.
The preparation method of described biodegradable stalk disposable product, be by raw material powder of straw, starch, fiber, glycerine,
Biological plastics, releasing agent and accelerator mix in proportion, add water and are tuned into paste, are put among cup type mould, are heated to 240 DEG C,
It is i.e. plastic after 25s.
Embodiment 3
A kind of biodegradable stalk disposable product, is made up of raw material in parts by mass：Powder of straw 35kg, starch
28kg, fiber 20kg, glycerine 2.8kg, biological plastics 18kg, releasing agent 3kg, accelerator 0.3kg, water 45kg.
The preparation method of described biodegradable stalk disposable product, be by raw material powder of straw, starch, fiber, glycerine,
Biological plastics, releasing agent and accelerator mix in proportion, add water and are tuned into paste, among the mould for being put into beverage packaging cup type, plus
Heat is i.e. plastic after 35s to 180 DEG C.
Embodiment 4
A kind of biodegradable stalk disposable product, is made up of raw material in parts by mass：Powder of straw 30kg, starch
15kg, fiber 10kg, glycerine 5kg, biological plastics 8kg, releasing agent 0.5kg, accelerator 0.5kg, water 30kg.
The preparation method of described biodegradable stalk disposable product, be by raw material powder of straw, starch, fiber, glycerine,
Biological plastics, releasing agent and accelerator mix in proportion, add water and are tuned into paste, are put into the Neto type such as leisure food, commodity, drinks
Mould among, be heated to 16 DEG C, it is i.e. plastic after 40s.
Embodiment 5
A kind of biodegradable stalk disposable product, is made up of raw material in parts by mass：Powder of straw 20kg, starch
15kg, fiber 30kg, glycerine 5kg, biological plastics 30kg, releasing agent 0.5kg, accelerator 0.1kg, water 60kg.
The preparation method of described biodegradable stalk disposable product, be by raw material powder of straw, starch, fiber, glycerine,
Biological plastics, releasing agent and accelerator mix in proportion, add water and are tuned into paste, among the mould for being put into seedling-raising cup or alms bowl type, plus
Heat is i.e. plastic after 25s to 240 DEG C.
Embodiment 6
A kind of biodegradable stalk disposable product, is made up of raw material in parts by mass：Powder of straw 20kg, starch
15kg, fiber 30kg, glycerine 5kg, biological plastics 8kg, releasing agent 5kg, accelerator 0.1kg, water 50kg.
The preparation method of described biodegradable stalk disposable product, be by raw material powder of straw, starch, fiber, glycerine,
Biological plastics, releasing agent and accelerator mix in proportion, add water and are tuned into paste, among the mould for being put into any filler type, plus
Heat is i.e. plastic after 25s to 240 DEG C.
Embodiment 7
A kind of biodegradable stalk disposable product, is made up of raw material in parts by mass：Powder of straw 20kg, starch
45kg, fiber 10kg, glycerine 5kg, biological plastics 8kg, releasing agent 5kg, accelerator 0.1kg, water 60kg.
The preparation method of described biodegradable stalk disposable product, be by raw material powder of straw, starch, fiber, glycerine,
Biological plastics, releasing agent and accelerator are mixed in proportion, add water and are tuned into paste, and the mould for being put into the Neto type of commodity packaging is worked as
In, it is heated to 220 DEG C, it is i.e. plastic after 35s.
Experimental example
Reference《Plastics disposable food or beverage container generic specifications》The standard of (GB 18006.1-2009), to prepared
The physical property of disposable product, sanitation performance, degraded testing result are shown in Table 1, table 2, shown in table 3 respectively：
Table 1：Physical property
Table 2：Sanitation performance
Table 3：Degraded detection
| Project | Degradation rate % |
| Standard | ≥15 |
| Embodiment 1 | 28.5 |
| Embodiment 2 | 27.3 |
| Embodiment 3 | 28.1 |
| Embodiment 4 | 27.8 |
| Embodiment 5 | 27.5 |
| Embodiment 6 | 28.2 |
| Embodiment 7 | 28.5 |
Claims (10)
1. a kind of biodegradable stalk disposable product, it is characterised in that be made up of raw material in parts by mass：Powder of straw
20~50, starch 15~45, fiber 10~30, glycerine 0.5~5, biological plastics 8~30, releasing agent 0.5~5, accelerator 0.1
~0.5, water 30~60.
2. biodegradation stalk disposable product as claimed in claim 1, it is characterised in that by original in parts by mass
Material composition：Powder of straw 35, starch 28, fiber 20, glycerine 2.8, biological plastics 18, releasing agent 3, accelerator 0.3, water 45.
3. biodegradation stalk disposable product as claimed in claim 1, it is characterised in that described powder of straw, is by rice
One or more compositions in grass, sugarcane, rice husk, reed, cornstalk, sweet potato vine, melon vine, are dried, and are crushed, and cross 60~120 mesh
Sieve, you can.
4. biodegradation stalk disposable product as claimed in claim 1, it is characterised in that described starch, is that corn forms sediment
One or more mixtures in powder, tapioca, starch from sweet potato, farina, rice starch, wheaten starch.
5. biodegradation stalk disposable product as claimed in claim 1, it is characterised in that described fiber, is that wood pulp is fine
One or more in dimension, straw pulp fiber, sugarcane slurry, cotton pulp, reed pulp.
6. biodegradation stalk disposable product as claimed in claim 1, it is characterised in that described biological plastics, is poly-
One or more in hydroxyalkanoate, PLA, polycaprolactone.
7. biodegradation stalk disposable product as claimed in claim 1, it is characterised in that described releasing agent, is stearic
One or more mixtures in acid, zinc stearate, magnesium stearate, silicone oil, methyl-silicone oil, synthesis paraffin, microcrystalline wax.
8. biodegradation stalk disposable product as claimed in claim 1, it is characterised in that described accelerator, is 12
One or more in sodium alkyl sulfate, white foaming agent, urea, sodium bicarbonate.
9. the preparation method of biodegradation stalk disposable product as claimed in claim 1, it is characterised in that be by raw material straw
Stalk powder, starch, fiber, glycerine, biological plastics, releasing agent and accelerator mix in proportion, add water and are tuned into paste, are put on demand
Among mould, 16~240 DEG C are heated to, it is i.e. plastic after 25~40s.
10. the biodegradable stalk disposable product as described in claim 1-2, it is characterised in that each kind disposable can be used for
The substitute of tableware or existing product, the product that soon disappear packaging, the seedlings nursing plate of planting industry, the support of all kinds of commodity packagings, it is packed for filling out
Fill thing.
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| CN201710279951.0A CN107083075A (en) | 2017-04-25 | 2017-04-25 | A kind of biodegradable stalk disposable product and preparation method thereof |
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| CN201710279951.0A CN107083075A (en) | 2017-04-25 | 2017-04-25 | A kind of biodegradable stalk disposable product and preparation method thereof |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107603254A (en) * | 2017-08-28 | 2018-01-19 | 贵州省玉态康环保餐具有限公司 | A kind of degradable disponsable tableware and preparation method thereof |
| CN107674440A (en) * | 2017-10-30 | 2018-02-09 | 贵州铜仁华毅新型材料科技有限公司 | A kind of resistance to puncture honeycomb paper and preparation method thereof |
| CN107858861A (en) * | 2017-10-30 | 2018-03-30 | 贵州铜仁华毅新型材料科技有限公司 | A kind of high tenacity is anti-tear to pull honeycomb paper and preparation method thereof |
| CN109306194A (en) * | 2018-09-21 | 2019-02-05 | 席小兵 | Degradable plant fiber rice seedling nursing disc and preparation method thereof |
| CN109320986A (en) * | 2018-09-29 | 2019-02-12 | 桐城市啄木鸟包装材料有限公司 | A kind of environment friendly bacteriostatic paper food packaging materials |
| CN109593332A (en) * | 2018-12-14 | 2019-04-09 | 河南青源天仁生物技术有限公司 | Fully biodegradable foamed seedlings nursing plate and preparation method thereof suitable for machinery transplanting |
| CN110564171A (en) * | 2019-07-25 | 2019-12-13 | 安徽新翔包装材料有限公司 | Degradable environment-friendly material and manufacturing process thereof |
| CN111647281A (en) * | 2020-04-30 | 2020-09-11 | 贵州省玉态康环保餐具有限公司 | Disposable biodegradable tableware and preparation method thereof |
| CN111690177A (en) * | 2019-03-13 | 2020-09-22 | 北京绿态美景环保科技有限公司 | Preparation method of starch foaming disposable tableware and packaging product |
| CN114292445A (en) * | 2021-12-30 | 2022-04-08 | 苏州锦拓新材料科技股份有限公司 | Degradable disposable tableware and injection mold thereof |
| GB2610407A (en) * | 2021-09-02 | 2023-03-08 | Vernacare Ltd | Cellulosic pulp composition |
| GB2612909A (en) * | 2021-09-02 | 2023-05-17 | Vernacare Ltd | Cellulosic pulp composition |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107603254A (en) * | 2017-08-28 | 2018-01-19 | 贵州省玉态康环保餐具有限公司 | A kind of degradable disponsable tableware and preparation method thereof |
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| CN107858861A (en) * | 2017-10-30 | 2018-03-30 | 贵州铜仁华毅新型材料科技有限公司 | A kind of high tenacity is anti-tear to pull honeycomb paper and preparation method thereof |
| CN109306194A (en) * | 2018-09-21 | 2019-02-05 | 席小兵 | Degradable plant fiber rice seedling nursing disc and preparation method thereof |
| CN109320986A (en) * | 2018-09-29 | 2019-02-12 | 桐城市啄木鸟包装材料有限公司 | A kind of environment friendly bacteriostatic paper food packaging materials |
| CN109593332A (en) * | 2018-12-14 | 2019-04-09 | 河南青源天仁生物技术有限公司 | Fully biodegradable foamed seedlings nursing plate and preparation method thereof suitable for machinery transplanting |
| CN111690177A (en) * | 2019-03-13 | 2020-09-22 | 北京绿态美景环保科技有限公司 | Preparation method of starch foaming disposable tableware and packaging product |
| CN110564171A (en) * | 2019-07-25 | 2019-12-13 | 安徽新翔包装材料有限公司 | Degradable environment-friendly material and manufacturing process thereof |
| CN111647281A (en) * | 2020-04-30 | 2020-09-11 | 贵州省玉态康环保餐具有限公司 | Disposable biodegradable tableware and preparation method thereof |
| GB2610407A (en) * | 2021-09-02 | 2023-03-08 | Vernacare Ltd | Cellulosic pulp composition |
| GB2612909A (en) * | 2021-09-02 | 2023-05-17 | Vernacare Ltd | Cellulosic pulp composition |
| CN114292445A (en) * | 2021-12-30 | 2022-04-08 | 苏州锦拓新材料科技股份有限公司 | Degradable disposable tableware and injection mold thereof |
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Application publication date: 20170822 |