CN112980159A - Formula and process for preparing biodegradable plastic bag - Google Patents
Formula and process for preparing biodegradable plastic bag Download PDFInfo
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- CN112980159A CN112980159A CN202110286723.2A CN202110286723A CN112980159A CN 112980159 A CN112980159 A CN 112980159A CN 202110286723 A CN202110286723 A CN 202110286723A CN 112980159 A CN112980159 A CN 112980159A
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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
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D22/00—Producing hollow articles
- B29D22/003—Containers for packaging, storing or transporting, e.g. bottles, jars, cans, barrels, tanks
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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
- 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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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a preparation formula of a biodegradable plastic bag, which is prepared by mixing a degradable raw material, mixed powder, auxiliary powder and a base layer raw material, wherein the weight ratio of four components of the degradable raw material, the mixed powder, the auxiliary powder and the base layer raw material is 1: 1.15-1.45: 0.6-0.7: 0.8 ~ 1.4, wherein, the degradation raw materials include PBAT powder, PLA powder, PHA powder mixes and forms, weave into the basic unit of netted type structure through utilizing basic unit's raw materials that forms as the material mixture with natural cotton fiber and wood fiber, mix with the degradation raw materials again, the time of plastic bag in market circulation has been prolonged greatly under the degradable prerequisite, can not degrade by oneself under non-biodegradable environment and non-burying environment too soon, utilize this structure and preparation technology to promote the durability of plastic bag greatly simultaneously, difficult damage, more can accord with the market demand, through the adhesion nature between supplementary powder reinforcing degradation raw materials and the basic unit's raw materials, make between the molecule more stable.
Description
Technical Field
The invention relates to the field of plastic bags, in particular to a formula and a process for preparing a biodegradable plastic bag.
Background
At present, most of plastic bags circulated in the market are plastic bags produced by direct extrusion, the circulation time in the market is short, the plastic bags can be automatically degraded after the circulation time is up to the moment, the circulation time is short, meanwhile, the plastic bags have low durability and are easy to damage, and therefore, a preparation formula and a preparation process of the high-durability biodegradable plastic bags, which can not be automatically degraded in a non-biodegradable environment and a non-buried environment too fast, are needed to be provided.
Disclosure of Invention
The invention aims to provide a preparation formula of a biodegradable plastic bag, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a formula for preparing a biodegradable plastic bag is prepared by mixing a degradable raw material, mixed powder, auxiliary powder and a base layer raw material, wherein the degradable raw material, the mixed powder, the auxiliary powder and the base layer raw material are mixed according to a weight ratio of 1: 1.15-1.45: 0.6-0.7: 0.8 ~ 1.4, wherein, the degradation raw materials include that PBAT powder, PLA powder, PHA powder mix and form, the mixed powder include wollastonite, plant cellulose and titanium white powder mix and form, the auxiliary powder include that compatilizer, antioxidant, emollient, glycerine, chain extender and plasticizer mix and form, basic unit's raw materials mix for natural cotton fiber and wood fiber and form, basic unit's raw materials weave into network structure, degradation raw materials, mixed powder, auxiliary powder mixture cover basic unit's raw materials on.
As a further technical scheme of the invention, 50-60 parts of PBAT powder, 5-10 parts of PLA powder, 5-8 parts of PHA powder, 5-10 parts of wollastonite, 5-10 parts of plant cellulose and 3-5 parts of titanium dioxide are used.
As a further technical scheme of the invention, the compatilizer is 5-8 parts, the antioxidant is 2-3 parts, the lubricant is 2-3 parts, the glycerol is 10-15 parts, the chain extender is 2-3 parts, and the plasticizer is 5-8 parts.
As a further technical scheme of the invention, the natural cotton fiber accounts for 30-50 parts, and the wood fiber accounts for 20-25 parts.
A preparation method of a formula for preparing biodegradable plastic bags specifically comprises the following steps: s1, putting natural cotton fibers and wood fibers into a stirrer, heating to 65-70 ℃, stirring for 30min, mixing to obtain a base raw material, pouring the base raw material into a weaving machine, weaving into a base layer with a net structure by the weaving machine, standing, and cooling to room temperature;
s2, putting the PBAT powder, the PLA powder and the PHA powder into a stirrer, pouring a proper amount of water, adjusting the temperature to 90-110 ℃, stirring the PBAT powder, the PLA powder and the PHA powder to be colloid, and then placing at a constant temperature to obtain a degradation raw material;
s3, sequentially putting wollastonite, plant cellulose and titanium dioxide into a stirrer, stirring and mixing to obtain mixed powder, putting the mixed powder and the degraded raw material obtained in the step S2 into the stirrer, stirring for continuously stirring for 45min, and standing at constant temperature after fully mixing;
s4, adding a compatilizer, an antioxidant, a lubricant, glycerol, a chain extender and a plasticizer into a stirrer at normal temperature, stirring the materials to be fully mixed to obtain auxiliary powder, putting the auxiliary powder and the mixture obtained in the step S3 into the stirrer, and stirring for 20min at a stirring screw rotating speed of 100r/min and a temperature of 70-90 ℃;
s5, rolling the base layer obtained in the step S1 into a bag shape through hooks, placing the bag shape at the head end of a plastic extruder, putting the mixture obtained in the step S4 into the plastic extruder, extruding the mixture through an extrusion screw after starting, and covering and fusing the mixture with the upper surface, the lower surface and the internal grids of the base layer into a whole;
s6, the packaging bag is taken down from the hook, the glue injection opening position connected with the hook is cut by a human hand, the packaging bag is obtained after standing and shaping, and packaging are carried out.
Compared with the prior art, the invention has the beneficial effects that: through utilizing the basic unit raw materials that form as the material mixture with natural cotton fiber and wood fiber to weave into the basic unit of network type structure, mix with the degradation raw materials again, the time of plastic bag in market circulation has been prolonged greatly under the degradable prerequisite, can not degrade by oneself under non-biodegradable environment and non-burying environment too soon, utilize this structure and preparation technology to promote the durability of plastic bag greatly simultaneously, difficult damaged, more can accord with the market demand, further through the adhesion between supplementary powder reinforcing degradation raw materials and the basic unit raw materials, make between the molecule more stable.
Detailed Description
The following describes embodiments of the present invention.
A formula for preparing a biodegradable plastic bag is characterized by being prepared by mixing a degradation raw material, mixed powder, auxiliary powder and a base layer raw material, wherein the weight ratio of four components of the degradation raw material, the mixed powder, the auxiliary powder and the base layer raw material is 1: 1.15-1.45: 0.6-0.7: 0.8-1.4, wherein the degradation raw material comprises PBAT powder, PLA powder and PHA powder, the mixed powder comprises wollastonite, plant cellulose and titanium dioxide, the auxiliary powder comprises compatilizer, antioxidant, lubricant, glycerol, chain extender and plasticizer, the basic raw material is formed by mixing natural cotton fiber and wood fiber, the basic raw material is woven into a net structure, the degradation raw material, the mixed powder and the auxiliary powder mixture cover the basic raw material, the PBAT powder is 50-60 parts, the PLA powder is 5-10 parts, the PHA powder is 5-8 parts, the wollastonite is 5-10 parts, the plant cellulose is 5-10 parts, the titanium dioxide is 3-5 parts, the compatilizer is 5-8 parts, 2-3 parts of antioxidant, 2-3 parts of lubricant, 10-15 parts of glycerol, 2-3 parts of chain extender, 5-8 parts of plasticizer, 30-50 parts of natural cotton fiber and 20-25 parts of wood fiber.
So, weave into the basic unit of network type structure through utilizing the basic unit raw materials that forms for the material mixture with natural cotton fiber and wood fiber, mix with the degradation raw materials again, the time of plastic bag in market circulation has been prolonged greatly under the degradable prerequisite, can not degrade by oneself under non-biodegradable environment and non-burying environment too soon, utilize this structure and preparation technology to promote the durability of plastic bag greatly simultaneously, difficult damaged, more can accord with the market demand, further through the adhesion between supplementary powder reinforcing degradation raw materials and the basic unit raw materials, make more stable between the molecule.
A preparation method of a formula for preparing biodegradable plastic bags specifically comprises the following steps: s1, putting natural cotton fibers and wood fibers into a stirrer, heating to 65-70 ℃, stirring for 30min, mixing to obtain a base raw material, pouring the base raw material into a weaving machine, weaving into a base layer with a net structure by the weaving machine, standing, and cooling to room temperature;
s2, putting the PBAT powder, the PLA powder and the PHA powder into a stirrer, pouring a proper amount of water, adjusting the temperature to 90-110 ℃, stirring the PBAT powder, the PLA powder and the PHA powder to be colloid, and then placing at a constant temperature to obtain a degradation raw material;
s3, sequentially putting wollastonite, plant cellulose and titanium dioxide into a stirrer, stirring and mixing to obtain mixed powder, putting the mixed powder and the degraded raw material obtained in the step S2 into the stirrer, stirring for continuously stirring for 45min, and standing at constant temperature after fully mixing;
s4, adding a compatilizer, an antioxidant, a lubricant, glycerol, a chain extender and a plasticizer into a stirrer at normal temperature, stirring the materials to be fully mixed to obtain auxiliary powder, putting the auxiliary powder and the mixture obtained in the step S3 into the stirrer, and stirring for 20min at a stirring screw rotating speed of 100r/min and a temperature of 70-90 ℃;
s5, rolling the base layer obtained in the step S1 into a bag shape through hooks, placing the bag shape at the head end of a plastic extruder, putting the mixture obtained in the step S4 into the plastic extruder, extruding the mixture through an extrusion screw after starting, and covering and fusing the mixture with the upper surface, the lower surface and the internal grids of the base layer into a whole;
s6, the packaging bag is taken down from the hook, the glue injection opening position connected with the hook is cut by a human hand, the packaging bag is obtained after standing and shaping, and packaging are carried out.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (5)
1. A formula for preparing a biodegradable plastic bag is characterized by being prepared by mixing a degradation raw material, mixed powder, auxiliary powder and a base layer raw material, wherein the weight ratio of four components of the degradation raw material, the mixed powder, the auxiliary powder and the base layer raw material is 1: 1.15-1.45: 0.6-0.7: 0.8 ~ 1.4, wherein, the degradation raw materials include that PBAT powder, PLA powder, PHA powder mix and form, the mixed powder include wollastonite, plant cellulose and titanium white powder mix and form, the auxiliary powder include that compatilizer, antioxidant, emollient, glycerine, chain extender and plasticizer mix and form, basic unit's raw materials mix for natural cotton fiber and wood fiber and form, basic unit's raw materials weave into network structure, degradation raw materials, mixed powder, auxiliary powder mixture cover basic unit's raw materials on.
2. The formulation as claimed in claim 1, wherein the PBAT powder is 50-60 parts, the PLA powder is 5-10 parts, the PHA powder is 5-8 parts, the wollastonite is 5-10 parts, the plant cellulose is 5-10 parts, and the titanium dioxide is 3-5 parts.
3. The formula for preparing biodegradable plastic bags according to claim 1, wherein the compatibilizer is 5-8 parts, the antioxidant is 2-3 parts, the lubricant is 2-3 parts, the glycerol is 10-15 parts, the chain extender is 2-3 parts, and the plasticizer is 5-8 parts.
4. The formula for preparing biodegradable plastic bags according to claim 1, wherein the natural cotton fiber is 30-50 parts, and the wood fiber is 20-25 parts.
5. The method for preparing a formulation for biodegradable plastic bags according to claims 1-4, comprising the following steps: s1, putting natural cotton fibers and wood fibers into a stirrer, heating to 65-70 ℃, stirring for 30min, mixing to obtain a base raw material, pouring the base raw material into a weaving machine, weaving into a base layer with a net structure by the weaving machine, standing, and cooling to room temperature;
s2, putting the PBAT powder, the PLA powder and the PHA powder into a stirrer, pouring a proper amount of water, adjusting the temperature to 90-110 ℃, stirring the PBAT powder, the PLA powder and the PHA powder to be colloid, and then placing at a constant temperature to obtain a degradation raw material;
s3, sequentially putting wollastonite, plant cellulose and titanium dioxide into a stirrer, stirring and mixing to obtain mixed powder, putting the mixed powder and the degraded raw material obtained in the step S2 into the stirrer, stirring for continuously stirring for 45min, and standing at constant temperature after fully mixing;
s4, adding a compatilizer, an antioxidant, a lubricant, glycerol, a chain extender and a plasticizer into a stirrer at normal temperature, stirring the materials to be fully mixed to obtain auxiliary powder, putting the auxiliary powder and the mixture obtained in the step S3 into the stirrer, and stirring for 20min at a stirring screw rotating speed of 100r/min and a temperature of 70-90 ℃;
s5, rolling the base layer obtained in the step S1 into a bag shape through hooks, placing the bag shape at the head end of a plastic extruder, putting the mixture obtained in the step S4 into the plastic extruder, extruding the mixture through an extrusion screw after starting, and covering and fusing the mixture with the upper surface, the lower surface and the internal grids of the base layer into a whole;
s6, the packaging bag is taken down from the hook, the glue injection opening position connected with the hook is cut by a human hand, the packaging bag is obtained after standing and shaping, and packaging are carried out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110286723.2A CN112980159A (en) | 2021-03-17 | 2021-03-17 | Formula and process for preparing biodegradable plastic bag |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110286723.2A CN112980159A (en) | 2021-03-17 | 2021-03-17 | Formula and process for preparing biodegradable plastic bag |
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| CN112980159A true CN112980159A (en) | 2021-06-18 |
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| CN202110286723.2A Pending CN112980159A (en) | 2021-03-17 | 2021-03-17 | Formula and process for preparing biodegradable plastic bag |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114229217A (en) * | 2021-12-27 | 2022-03-25 | 蔡思杰 | Environment-friendly packaging bag capable of being recycled for multiple times and manufacturing process and application thereof |
| CN114621564A (en) * | 2022-03-29 | 2022-06-14 | 湖南金悦降解塑料制品有限公司 | Manufacturing process and application of environment-friendly degradable plastic |
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| CN101481507A (en) * | 2009-01-20 | 2009-07-15 | 广州华新科实业有限公司 | Wholly-degradable material, preparation thereof and method for preparing packing bag with the same |
| CN109971196A (en) * | 2019-02-26 | 2019-07-05 | 厦门壳氏新材料科技有限公司 | A kind of rice hull cellulose high-content filling PBAT based composites and its preparation method and application |
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2021
- 2021-03-17 CN CN202110286723.2A patent/CN112980159A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20060266578A1 (en) * | 2005-05-20 | 2006-11-30 | Pioneer Corporation | Speaker diaphragm and method for manufacturing the same |
| CN101481507A (en) * | 2009-01-20 | 2009-07-15 | 广州华新科实业有限公司 | Wholly-degradable material, preparation thereof and method for preparing packing bag with the same |
| CN109971196A (en) * | 2019-02-26 | 2019-07-05 | 厦门壳氏新材料科技有限公司 | A kind of rice hull cellulose high-content filling PBAT based composites and its preparation method and application |
Non-Patent Citations (1)
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| 谢富原编著: "《先进复合材料制造技术》", 30 September 2017, 航空工业出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114229217A (en) * | 2021-12-27 | 2022-03-25 | 蔡思杰 | Environment-friendly packaging bag capable of being recycled for multiple times and manufacturing process and application thereof |
| CN114621564A (en) * | 2022-03-29 | 2022-06-14 | 湖南金悦降解塑料制品有限公司 | Manufacturing process and application of environment-friendly degradable plastic |
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Application publication date: 20210618 |
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