CN111690177A - Preparation method of starch foaming disposable tableware and packaging product - Google Patents
Preparation method of starch foaming disposable tableware and packaging product Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
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- C—CHEMISTRY; METALLURGY
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- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B30/00—Preparation of starch, degraded or non-chemically modified starch, amylose, or amylopectin
- C08B30/12—Degraded, destructured or non-chemically modified starch, e.g. mechanically, enzymatically or by irradiation; Bleaching of starch
- C08B30/18—Dextrin, e.g. yellow canari, white dextrin, amylodextrin or maltodextrin; Methods of depolymerisation, e.g. by irradiation or mechanically
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- C—CHEMISTRY; METALLURGY
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- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0014—Use of organic additives
- C08J9/0023—Use of organic additives containing oxygen
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0085—Use of fibrous compounding ingredients
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2303/00—Characterised by the use of starch, amylose or amylopectin or of their derivatives or degradation products
- C08J2303/02—Starch; Degradation products thereof, e.g. dextrin
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2401/00—Characterised by the use of cellulose, modified cellulose or cellulose derivatives
- C08J2401/02—Cellulose; Modified cellulose
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2429/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Derivatives of such polymer
- C08J2429/02—Homopolymers or copolymers of unsaturated alcohols
- C08J2429/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2467/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2467/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2467/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2467/04—Polyesters derived from hydroxy carboxylic acids, e.g. lactones
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2497/00—Characterised by the use of lignin-containing materials
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2497/00—Characterised by the use of lignin-containing materials
- C08J2497/02—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
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
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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
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
- C08K5/098—Metal salts of carboxylic acids
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- Polymers & Plastics (AREA)
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- Life Sciences & Earth Sciences (AREA)
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Abstract
The invention discloses a preparation method of starch foaming disposable tableware and a packaging product, which comprises the following components in percentage: 45% -59% of starch (corn starch or cassava starch); 4% -6% of fiber (various fibers); 3% -5% of bioplastic; 0.5 to 2 percent of zinc stearate; 1% -2% of an accelerant; 25% -45% of water; the preparation method comprises the following steps: weighing raw materials in proportion → stirring at low speed and high speed by a stirrer → molding products by an injection molding machine → drying treatment → packaging of waterproof treatment products. The invention has the beneficial effects that the preparation method of the starch foaming disposable tableware and the packaging product adopts the starch as the main preparation component, has no harm to human body, is convenient for environmental protection treatment after being discarded, and has high degradation speed.
Description
Technical Field
The invention relates to the technical field of starch foaming preparation, in particular to a preparation method of starch foaming disposable tableware and a packaging product.
Background
Foamed tableware, i.e. disposable foamed plastic tableware, is made up of polystyrene resin through heating to melt, adding foaming agent (butane) to extrude, rolling, laying aside in ventilating and wet environment, heating again, and shaping. However, the foaming tableware is toxic in the using process, and is a product forbidden by China, therefore, I researches and develops a preparation method of starch foaming disposable tableware and a packaging product, the starch is used as a main preparation component, no harm is caused to human bodies, the disposable tableware is convenient to treat in an environment-friendly way after being discarded, and the degradation speed is high.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the existing defects and provide a novel starch foaming disposable tableware and a preparation method of a packaging product, thereby solving the problems.
In order to achieve the purpose, the invention provides the following technical scheme: a preparation method of starch foaming disposable tableware and packaging products comprises the following components in percentage: 45% -59% of starch (corn starch or cassava starch); 4% -6% of fiber (various fibers); 3% -5% of bioplastic; 0.5 to 2 percent of zinc stearate; 1% -2% of an accelerant; 25% -45% of water;
the preparation method comprises the following steps: weighing raw materials in proportion → stirring at low speed and high speed by a stirrer → molding a product by an injection molding machine → drying treatment → packaging a waterproof treatment product;
wherein, the raw materials are weighed according to the proportion: carrying out load bearing on starch, fiber, bioplastic, zinc stearate and an accelerant according to a selected proportion;
stirring at low speed and high speed by a stirrer: opening the fiber by high-speed stirring, adding starch and other auxiliary materials, adding water according to a proportion, fully mixing for 2 minutes by low-speed operation of a stirrer at 200 revolutions per minute, and fully mixing for 3 minutes by high-speed operation at 1500 revolutions per minute to fully and uniformly mix starch and fiber (plant powder), and driving a modifier to catalyze starch to rapidly gelatinize and denature by utilizing self heat generated by stirring;
molding a product by using an injection molding machine: extruding the starch mixture into an injection molding machine through a screw, conveying the starch mixture to a mold cavity through the injection molding machine, and foaming, exhausting and molding;
drying treatment: drying the formed product, and utilizing a fan to perform hot air quick drying in the drying process;
and (3) waterproof treatment: and (4) thermoplastic film packaging is carried out by using a thermoplastic packaging machine, so that waterproof packaging is realized.
Preferably, in the preparation method of the injection molding machine molding product, the injection molding machine molding mould needs to be heated to 200-230 ℃ and pressure; 200 tons to 300 tons. The time is 20-50 seconds. .
Preferably, in the preparation method of the injection molding machine molding product, the temperature of the mold of the pressure molding machine is 200-230 ℃ and the pressure is required; 20 tons to 40 tons. The time is 20 seconds to 50 seconds.
Furthermore, 2 times of exhaust is adopted in the two production modes, so that the product forming time can be effectively shortened.
Preferably, the starch is any one of corn starch, potato starch and cassava starch, the fiber is any one of sugarcane pulp, wood pulp, straw pulp and cotton pulp, the bioplastic is any one of PLA, PBS, PBAT and PVA, the zinc stearate can be prepared by using stearic acid and magnesium stearate instead of the PLA, the PBS, the PBAT and the PVA, the plant powder is any one of straw, rice hull and straw, and the water is common water and deionized water.
Compared with the prior art, the invention has the beneficial effects that: the starch is adopted as the main preparation component, so that the method is harmless to human bodies, convenient and environment-friendly to treat after being discarded, and high in degradation speed.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by those skilled in the art without any creative work based on the embodiments of the present invention belong to the protection scope of the present invention.
Example 1:
the invention provides a technical scheme that: a preparation method of starch foaming disposable tableware and packaging products comprises the following components in percentage: 45% -59% of starch (corn starch or cassava starch); 4% -6% of fiber (various fibers); 3% -5% of bioplastic; 0.5 to 2 percent of zinc stearate; 1% -2% of an accelerant; 25% -45% of water;
the preparation method comprises the following steps: weighing raw materials in proportion → stirring at low speed and high speed by a stirrer → molding a product by an injection molding machine → drying treatment → packaging a waterproof treatment product;
wherein, the raw materials are weighed according to the proportion: carrying out load bearing on starch, fiber, bioplastic, zinc stearate and an accelerant according to a selected proportion;
stirring at low speed and high speed by a stirrer: opening the fiber by high-speed stirring, adding starch and other auxiliary materials, adding water according to a proportion, fully mixing for 2 minutes by low-speed operation of a stirrer at 200 revolutions per minute, and fully mixing for 3 minutes by high-speed operation at 1500 revolutions per minute to fully and uniformly mix starch and fiber (plant powder), and driving a modifier to catalyze starch to rapidly gelatinize and denature by utilizing self heat generated by stirring;
molding a product by using an injection molding machine: extruding the starch mixture into an injection molding machine through a screw, conveying the starch mixture to a mold cavity through the injection molding machine, and foaming, exhausting and molding;
drying treatment: drying the formed product, and utilizing a fan to perform hot air quick drying in the drying process;
and (3) waterproof treatment: and (4) thermoplastic film packaging is carried out by using a thermoplastic packaging machine, so that waterproof packaging is realized.
In the present embodiment, in the method for preparing the injection molding machine molding product, the injection molding machine molding mold needs to be heated to 200 ° -230 ° and pressure; 200 tons to 300 tons. The time is 20-50 seconds, or in the preparation method of the product molded by the injection molding machine, the temperature of a mold of a pressure molding machine is required to be 200-230 ℃ and the pressure is required; 20 tons to 40 tons. The time is 20 seconds to 50 seconds, 2 times of exhaust is adopted in the two production modes, the product forming time can be effectively shortened, the starch is any one of corn starch, potato starch and cassava starch, the fiber is any one of sugarcane pulp, wood pulp, straw pulp and cotton pulp, the bioplastic is any one of PLA, PBS, PBAT and PVA, the zinc stearate can be prepared from stearic acid and magnesium stearate instead of the stearic acid and magnesium stearate, the plant powder is prepared from any one of straws, rice husks and straws, and the water is common water and deionized water.
In the technical scheme, the starch belongs to a wide range of basic material sources, is easy to degrade quickly after being discarded after being used, the fiber can increase the toughness and strength of the product after being dispersed in the product, is easy to degrade quickly after being discarded after being used, and the biological plastic has the functions of increasing the toughness, filling pores after being foamed by the starch and leveling the surface of the next step. The environment-friendly degradable material and the stearic acid play a role in lubricating and demoulding. The biodegradable material, the accelerant also called modifier are a combination of various raw materials, and have the main functions: 1. the method is characterized by comprising the steps of promoting starch to be quickly gelatinized and denatured during stirring at the temperature of 55-65 ℃, 2, accurately controlling the foaming ratio, catalyzing starch to be quickly modified, enabling the starch to be softer and more moist and have tensile force, enabling the surface of a product to be more smooth and more hydrophobic after molding and foaming, increasing the strength and toughness to be suitable for different product types, being capable of more accurately controlling the foaming ratio of different products, increasing the practicability of the product, widely solving the pollution caused by straw burning as a filler source and reducing the product cost by using plant powder, adding the plant powder into the starch when stirring and mixing the plant straw powder to be crushed to an interval of 60-100 meshes, quickly and uniformly dispersing the plant powder by using the viscosity after starch gelatinization, and enabling the appearance and the color of the product to be uniform.
Example 2:
the components are divided into the following parts by percentage: 50% -60% of starch; 15% of plant powder; 3% -5% of bioplastic; 0.5 to 2 percent of zinc stearate; 1% -2% of an accelerant; 13-20% of water, and the rest is the same as example 1.
Finally, it should be further noted that the above examples and descriptions are not limited to the above embodiments, and technical features of the present invention that are not described may be implemented by or using the prior art, and are not described herein again; the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the present invention, and the present invention is described in detail with reference to the preferred embodiments, and those skilled in the art should understand that those skilled in the art can make changes, modifications, additions or substitutions within the spirit scope of the present invention without departing from the spirit of the present invention, and also fall within the scope of the claims of the present invention, and the above embodiments are only given as an arbitrary example of one of the embodiments which are currently used.
Claims (5)
1. A preparation method of starch foaming disposable tableware and packaging products is characterized in that the components are divided into the following parts by weight: 45% -59% of starch (corn starch or cassava starch); 4% -6% of fiber (various fibers); 3% -5% of bioplastic; 0.5 to 2 percent of zinc stearate; 1% -2% of an accelerant; 25% -45% of water;
the preparation method comprises the following steps: weighing raw materials in proportion → stirring at low speed and high speed by a stirrer → molding a product by an injection molding machine → drying treatment → packaging a waterproof treatment product;
wherein, the raw materials are weighed according to the proportion: carrying out load bearing on starch, fiber, bioplastic, zinc stearate and an accelerant according to a selected proportion;
stirring at low speed and high speed by a stirrer: opening the fiber by high-speed stirring, adding starch and other auxiliary materials, adding water according to a proportion, fully mixing for 2 minutes by low-speed operation of a stirrer at 200 revolutions per minute, and fully mixing for 3 minutes by high-speed operation at 1500 revolutions per minute to fully and uniformly mix starch and fiber (plant powder), and driving a modifier to catalyze starch to rapidly gelatinize and denature by utilizing self heat generated by stirring;
molding a product by using an injection molding machine: extruding the starch mixture into an injection molding machine through a screw, conveying the starch mixture to a mold cavity through the injection molding machine, and foaming, exhausting and molding;
drying treatment: drying the formed product, and utilizing a fan to perform hot air quick drying in the drying process;
and (3) waterproof treatment: and (4) thermoplastic film packaging is carried out by using a thermoplastic packaging machine, so that waterproof packaging is realized.
2. The method of claim 1 wherein the injection molding machine molds are heated to 200 ° -230 ° pressure during the method of forming the injection molded products; 200 tons to 300 tons. The time is 20-50 seconds. .
3. The method of claim 1 wherein the temperature of the pressure forming machine mold is 200 ° -230 ° and the pressure is required for the forming machine mold in the method of forming the starch foamed disposable tableware and packaging products; 20 tons to 40 tons. The time is 20 seconds to 50 seconds.
4. The method for preparing starch foaming disposable tableware and packaging products according to claim 2 or 3, wherein 2 times of air exhaust is adopted in both production modes, so that the product forming time can be effectively shortened.
5. The method for preparing starch foaming disposable tableware and packaging products according to claim 1, wherein the starch is any one of corn starch, potato starch and tapioca starch, the fiber is any one of cane pulp, wood pulp, straw pulp and cotton pulp, the bioplastic is any one of PLA, PBS, PBAT and PVA, the zinc stearate can be stearic acid and magnesium stearate instead of using the same components, the plant powder is any one of straw, rice hull and straw, and the water is common water and deionized water.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910186727.6A CN111690177A (en) | 2019-03-13 | 2019-03-13 | Preparation method of starch foaming disposable tableware and packaging product |
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| CN201910186727.6A CN111690177A (en) | 2019-03-13 | 2019-03-13 | Preparation method of starch foaming disposable tableware and packaging product |
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Cited By (3)
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| CN113105674A (en) * | 2021-05-28 | 2021-07-13 | 汕头市春叶新材料环保有限公司 | Degradable composite foaming material, and preparation device and method thereof |
| CN115636987A (en) * | 2022-11-15 | 2023-01-24 | 深圳辰梦源科技有限公司 | Bio-based foaming material and preparation method thereof |
| GB2610407A (en) * | 2021-09-02 | 2023-03-08 | Vernacare Ltd | Cellulosic pulp composition |
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| GB2610407A (en) * | 2021-09-02 | 2023-03-08 | Vernacare Ltd | Cellulosic pulp composition |
| CN115636987A (en) * | 2022-11-15 | 2023-01-24 | 深圳辰梦源科技有限公司 | Bio-based foaming material and preparation method thereof |
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