CN112976463A - Processing method of environment-friendly foam packing box - Google Patents
Processing method of environment-friendly foam packing box Download PDFInfo
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- CN112976463A CN112976463A CN202110333320.9A CN202110333320A CN112976463A CN 112976463 A CN112976463 A CN 112976463A CN 202110333320 A CN202110333320 A CN 202110333320A CN 112976463 A CN112976463 A CN 112976463A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/36—Feeding the material to be shaped
- B29C44/38—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B13/00—Conditioning or physical treatment of the material to be shaped
- B29B13/10—Conditioning or physical treatment of the material to be shaped by grinding, e.g. by triturating; by sieving; by filtering
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
- B29B7/22—Component parts, details or accessories; Auxiliary operations
- B29B7/28—Component parts, details or accessories; Auxiliary operations for measuring, controlling or regulating, e.g. viscosity control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/3415—Heating or cooling
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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
- 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
- C08J9/0066—Use of inorganic 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
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
- C08J9/10—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
- C08J9/102—Azo-compounds
- C08J9/103—Azodicarbonamide
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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
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/04—N2 releasing, ex azodicarbonamide or nitroso compound
-
- 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
- C08J2325/00—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 aromatic carbocyclic ring; Derivatives of such polymers
- C08J2325/02—Homopolymers or copolymers of hydrocarbons
- C08J2325/04—Homopolymers or copolymers of styrene
- C08J2325/06—Polystyrene
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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
- C08J2403/00—Characterised by the use of starch, amylose or amylopectin or of their derivatives or degradation products
- C08J2403/04—Starch derivatives
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Abstract
The invention belongs to the field of foam packing boxes, in particular to a processing method of an environment-friendly foam packing box, which aims at the problems that the prior foam packing box has low reuse rate, the overall shape of the prior foam packing box is easy to deform or break after being transported and used for a plurality of times, and the prior foam packing box is difficult to use for a plurality of times, so that the using number of foam boxes is increased, and the environmental protection is not friendly, the following scheme is proposed, and the method comprises the following steps: s1: weighing the following raw materials in parts by weight: 50-80 parts of polystyrene particles, 30-50 parts of modified starch, 20-40 parts of strong solvent, 10-20 parts of flame retardant, 20-40 parts of absolute ethyl alcohol, 10-30 parts of methyl tertiary butyl ether and 10-20 parts of azodicarbonamide. The foam packing box has high reuse rate, the whole shape of the foam packing box is not easy to deform or break, the foam packing box can be used for multiple times, and meanwhile, the foam packing box has high degradability and is very friendly to environment.
Description
Technical Field
The invention relates to the technical field of foam packing boxes, in particular to a processing method of an environment-friendly foam packing box.
Background
The foam box is a box-type packaging container made of foam plastic, a packaging box made of foam is commonly used for packaging fragile products or articles needing cold insulation, the foam packaging box is the most common packaging tool for transporting seafood, frozen marine products or fresh marine products and ice blocks are placed in the foam packaging box, and then the foam packaging box is transported in a sealed mode, so that heat exchange between the inside and the outside of the foam packaging box can be effectively reduced, the low-temperature environment in the foam packaging box is guaranteed, and the fresh-keeping effect is achieved; however, the existing foam packing box has low reuse rate, and after being transported and used for many times, the overall shape of the existing foam packing box is easy to deform or break, so that the existing foam packing box is difficult to use for many times, thereby increasing the using number of the foam packing box and being very unfriendly to environmental protection.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a processing method of an environment-friendly foam packing box.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method for processing an environment-friendly foam packing box, which comprises the following steps:
s1: weighing the following raw materials in parts by weight: 50-80 parts of polystyrene particles, 30-50 parts of modified starch, 20-40 parts of strong solvent, 10-20 parts of flame retardant, 20-40 parts of absolute ethyl alcohol, 10-30 parts of methyl tertiary butyl ether and 10-20 parts of azodicarbonamide;
s2: preparing a pulverizer and a sieving machine, putting the polystyrene particles in S1 into the pulverizer for pulverization, putting the pulverized polystyrene into the sieving machine, and sieving materials with different sizes by the sieving machine to obtain polystyrene pulverized particles;
s3: preparing a mixer, putting the polystyrene crushed particles in S2 into the mixer, putting the modified starch, the strong solvent, the flame retardant, the absolute ethyl alcohol, the methyl tertiary butyl ether and the azodicarbonamide in S1 into the mixer, stirring and mixing the internal raw materials by the mixer, and softening the raw materials to obtain a mixed processing material;
s4: putting the mixed processing material into a foaming container and adjusting the pressure in the container to enable a foaming agent to obtain foaming expansion in the container, and expanding the mixed processing material to form foam holes to obtain a foaming material S3;
s5: preparing a first mold and a second mold, placing a part of the foaming material in the step S4 into the first mold for cooling and molding to obtain a foam inner box, taking out the foam inner box, attaching waterproof plastic films to the bottom and the side wall of the foam inner box, placing the rest foaming material into the second mold, placing the foam inner box with the waterproof plastic films into the second mold, and attaching and assembling the foam inner box with the waterproof plastic films into the second mold to obtain a finished foam box product.
Specifically, in the step S1, the raw materials are sequentially weighed according to the following parts by weight: 50 parts of polystyrene particles, 30 parts of modified starch, 20 parts of strong solvent, 10 parts of flame retardant, 20 parts of absolute ethyl alcohol, 10 parts of methyl tertiary butyl ether and 10 parts of azodicarbonamide.
Specifically, in S2, the pulverizing time is 30-40 minutes, and the rotation speed of the pulverizer is 1000-2000 r/min.
Specifically, the flame retardant is antimony trioxide, and the strong solvent is cyclohexane.
Specifically, in S3, the mixing time is 120-150 minutes, and the rotation speed of the mixer is 300-500 r/min.
Specifically, in the step S5, the cooling time is 20-40 minutes, and the cooling temperature is 40-45 ℃.
Specifically, in S5, glue is applied to the outer wall of the foam inner box.
Specifically, in the step S2, the mesh number of the sieving machine is 500-700 meshes.
Compared with the prior art, the invention has the beneficial effects that:
(1) according to the processing method of the environment-friendly foam packing box, methyl tertiary butyl ether is used to replace ethylene glycol ethyl ether to be used as a dissolving agent, the use safety is higher, cyclohexane is used as a strong solvent, the integral use toxicity can be greatly reduced, and the polarity is lower.
(2) According to the processing method of the environment-friendly foam packing box, the polystyrene particles are further crushed to be finer and denser, and the prepared polystyrene particles are matched with the modified starch for use, so that the viscosity during foaming can be increased, the degradation speed can be increased, the foam box is more environment-friendly, and the using amount of the polystyrene particles is effectively reduced.
(3) According to the processing method of the environment-friendly foam packing box, the integrated foam box is manufactured and assembled in two steps during processing, so that the service life of the foam box is greatly prolonged, and the reuse rate and the recycling rate are improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be understood that the drawings in the following description are illustrative only, and that the structures, proportions, sizes, and other elements shown in the drawings are incorporated herein by reference in their entirety for all purposes in the present disclosure, which are not intended to limit the scope of the invention, which is to be construed as limiting the invention in any manner, and not necessarily for all purposes, except as technically essential.
FIG. 1 is a flow chart of a method for processing an environment-friendly foam packing box according to the present invention;
FIG. 2 is an exploded view of a foam box of the method for manufacturing an environmentally friendly foam packing box according to the present invention;
FIG. 3 is a schematic view of the degradation of a prior art foam box product;
FIG. 4 is a schematic diagram showing the degradation of the foam box product according to the method for manufacturing the environment-friendly foam packing box of the present invention;
FIG. 5 is a schematic of the durability of a prior art foam box product;
FIG. 6 is a schematic view of the durability of the foam box product according to the method for processing the environment-friendly foam packing box of the present invention.
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
Referring to fig. 1 to 6, a method for processing an environment-friendly foam packing case, the method comprising:
s1: weighing the following raw materials in parts by weight: 50-80 parts of polystyrene particles, 30-50 parts of modified starch, 20-40 parts of strong solvent, 10-20 parts of flame retardant, 20-40 parts of absolute ethyl alcohol, 10-30 parts of methyl tertiary butyl ether and 10-20 parts of azodicarbonamide;
s2: preparing a pulverizer and a sieving machine, putting the polystyrene particles in S1 into the pulverizer for pulverization, putting the pulverized polystyrene into the sieving machine, and sieving materials with different sizes by the sieving machine to obtain polystyrene pulverized particles;
s3: preparing a mixer, putting the polystyrene crushed particles in S2 into the mixer, putting the modified starch, the strong solvent, the flame retardant, the absolute ethyl alcohol, the methyl tertiary butyl ether and the azodicarbonamide in S1 into the mixer, stirring and mixing the internal raw materials by the mixer, and softening the raw materials to obtain a mixed processing material;
s4: putting the mixed processing material into a foaming container and adjusting the pressure in the container to enable a foaming agent to obtain foaming expansion in the container, and expanding the mixed processing material to form foam holes to obtain a foaming material S3;
s5: preparing a first mold and a second mold, placing a part of the foaming material in the step S4 into the first mold for cooling and molding to obtain a foam inner box, taking out the foam inner box, attaching waterproof plastic films to the bottom and the side wall of the foam inner box, placing the rest foaming material into the second mold, placing the foam inner box with the waterproof plastic films into the second mold, and attaching and assembling the foam inner box with the waterproof plastic films into the second mold to obtain a finished foam box product.
In this embodiment, in S1, the raw materials are sequentially weighed according to the following parts by weight: 50 parts of polystyrene particles, 30 parts of modified starch, 20 parts of strong solvent, 10 parts of flame retardant, 20 parts of absolute ethyl alcohol, 10 parts of methyl tertiary butyl ether and 10 parts of azodicarbonamide.
In this embodiment, in the step S2, the pulverizing time is 30-40 minutes, and the rotation speed of the pulverizer is 1000-2000 r/min.
In this embodiment, the flame retardant is antimony trioxide, and the strong solvent is cyclohexane.
In this embodiment, in S3, the mixing time is 120-150 minutes, and the rotation speed of the mixer is 300-500 r/min.
In this embodiment, in S5, the cooling time is 20 to 40 minutes, and the cooling temperature is 40 to 45 ℃.
In this embodiment, in S5, glue is applied to the outer wall of the inner foam box.
In this embodiment, in S2, the mesh number of the sieving machine is 500-700 meshes.
The method comprises the following steps of testing the use durability and the degradation degree of the foam box processed in the first embodiment through detection equipment, and recording a test result, wherein the attached drawing 3 is a degradation schematic diagram of the existing foam box product, and the attached drawing 4 is a degradation schematic diagram of the foam box product processed in the scheme;
example two
Referring to fig. 1-2, a method for processing an environment-friendly foam packing case, the method comprising:
s1: weighing the following raw materials in parts by weight: 50-80 parts of polystyrene particles, 30-50 parts of modified starch, 20-40 parts of strong solvent, 10-20 parts of flame retardant, 20-40 parts of absolute ethyl alcohol, 10-30 parts of methyl tertiary butyl ether and 10-20 parts of azodicarbonamide;
s2: preparing a pulverizer and a sieving machine, putting the polystyrene particles in S1 into the pulverizer for pulverization, putting the pulverized polystyrene into the sieving machine, and sieving materials with different sizes by the sieving machine to obtain polystyrene pulverized particles;
s3: preparing a mixer, putting the polystyrene crushed particles in S2 into the mixer, putting the modified starch, the strong solvent, the flame retardant, the absolute ethyl alcohol, the methyl tertiary butyl ether and the azodicarbonamide in S1 into the mixer, stirring and mixing the internal raw materials by the mixer, and softening the raw materials to obtain a mixed processing material;
s4: putting the mixed processing material into a foaming container and adjusting the pressure in the container to enable a foaming agent to obtain foaming expansion in the container, and expanding the mixed processing material to form foam holes to obtain a foaming material S3;
s5: preparing a first mold and a second mold, placing a part of the foaming material in the step S4 into the first mold for cooling and molding to obtain a foam inner box, taking out the foam inner box, attaching waterproof plastic films to the bottom and the side wall of the foam inner box, placing the rest foaming material into the second mold, placing the foam inner box with the waterproof plastic films into the second mold, and attaching and assembling the foam inner box with the waterproof plastic films into the second mold to obtain a finished foam box product.
In this embodiment, in S1, the raw materials are sequentially weighed according to the following parts by weight: 60 parts of polystyrene particles, 40 parts of modified starch, 30 parts of strong solvent, 20 parts of flame retardant, 30 parts of absolute ethyl alcohol, 20 parts of methyl tertiary butyl ether and 20 parts of azodicarbonamide.
In this embodiment, in the step S2, the pulverizing time is 30 minutes, and the rotation speed of the pulverizer is 1000-2000 r/min.
In this embodiment, the flame retardant is antimony trioxide, and the strong solvent is cyclohexane.
In this example, in S3, the mixing time was 120 minutes, and the rotational speed of the mixer was 300 r/min.
In this example, in S5, the cooling time was 20 minutes, and the cooling temperature was 40 ℃.
In this embodiment, in S5, glue is applied to the outer wall of the inner foam box.
In this embodiment, in S2, the mesh number of the sieving machine is 500 meshes.
EXAMPLE III
Referring to fig. 1-2, a method for processing an environment-friendly foam packing case, the method comprising:
s1: weighing the following raw materials in parts by weight: 50-80 parts of polystyrene particles, 30-50 parts of modified starch, 20-40 parts of strong solvent, 10-20 parts of flame retardant, 20-40 parts of absolute ethyl alcohol, 10-30 parts of methyl tertiary butyl ether and 10-20 parts of azodicarbonamide;
s2: preparing a pulverizer and a sieving machine, putting the polystyrene particles in S1 into the pulverizer for pulverization, putting the pulverized polystyrene into the sieving machine, and sieving materials with different sizes by the sieving machine to obtain polystyrene pulverized particles;
s3: preparing a mixer, putting the polystyrene crushed particles in S2 into the mixer, putting the modified starch, the strong solvent, the flame retardant, the absolute ethyl alcohol, the methyl tertiary butyl ether and the azodicarbonamide in S1 into the mixer, stirring and mixing the internal raw materials by the mixer, and softening the raw materials to obtain a mixed processing material;
s4: putting the mixed processing material into a foaming container and adjusting the pressure in the container to enable a foaming agent to obtain foaming expansion in the container, and expanding the mixed processing material to form foam holes to obtain a foaming material S3;
s5: preparing a first mold and a second mold, placing a part of the foaming material in the step S4 into the first mold for cooling and molding to obtain a foam inner box, taking out the foam inner box, attaching waterproof plastic films to the bottom and the side wall of the foam inner box, placing the rest foaming material into the second mold, placing the foam inner box with the waterproof plastic films into the second mold, and attaching and assembling the foam inner box with the waterproof plastic films into the second mold to obtain a finished foam box product.
In this embodiment, in S1, the raw materials are sequentially weighed according to the following parts by weight: 55 parts of polystyrene particles, 35 parts of modified starch, 25 parts of strong solvent, 15 parts of flame retardant, 25 parts of absolute ethyl alcohol, 15 parts of methyl tertiary butyl ether and 10 parts of azodicarbonamide.
In this example, in the step S2, the pulverizing time was 40 minutes, and the rotational speed of the pulverizer was 2000 r/min.
In this embodiment, the flame retardant is antimony trioxide, and the strong solvent is cyclohexane.
In this example, in S3, the mixing time was 150 minutes, and the rotational speed of the mixer was 3500 r/min.
In this example, in S5, the cooling time was 40 minutes, and the cooling temperature was 45 ℃.
In this embodiment, in S5, glue is applied to the outer wall of the inner foam box.
In this embodiment, in S2, the mesh number of the sieving machine is 700 meshes.
Example four
Referring to fig. 1-2, a method for processing an environment-friendly foam packing case, the method comprising:
s1: weighing the following raw materials in parts by weight: 50-80 parts of polystyrene particles, 30-50 parts of modified starch, 20-40 parts of strong solvent, 10-20 parts of flame retardant, 20-40 parts of absolute ethyl alcohol, 10-30 parts of methyl tertiary butyl ether and 10-20 parts of azodicarbonamide;
s2: preparing a pulverizer and a sieving machine, putting the polystyrene particles in S1 into the pulverizer for pulverization, putting the pulverized polystyrene into the sieving machine, and sieving materials with different sizes by the sieving machine to obtain polystyrene pulverized particles;
s3: preparing a mixer, putting the polystyrene crushed particles in S2 into the mixer, putting the modified starch, the strong solvent, the flame retardant, the absolute ethyl alcohol, the methyl tertiary butyl ether and the azodicarbonamide in S1 into the mixer, stirring and mixing the internal raw materials by the mixer, and softening the raw materials to obtain a mixed processing material;
s4: putting the mixed processing material into a foaming container and adjusting the pressure in the container to enable a foaming agent to obtain foaming expansion in the container, and expanding the mixed processing material to form foam holes to obtain a foaming material S3;
s5: preparing a first mold and a second mold, placing a part of the foaming material in the step S4 into the first mold for cooling and molding to obtain a foam inner box, taking out the foam inner box, attaching waterproof plastic films to the bottom and the side wall of the foam inner box, placing the rest foaming material into the second mold, placing the foam inner box with the waterproof plastic films into the second mold, and attaching and assembling the foam inner box with the waterproof plastic films into the second mold to obtain a finished foam box product.
In this embodiment, in S1, the raw materials are sequentially weighed according to the following parts by weight: 55 parts of polystyrene particles, 30 parts of modified starch, 25 parts of strong solvent, 10 parts of flame retardant, 25 parts of absolute ethyl alcohol, 10 parts of methyl tertiary butyl ether and 15 parts of azodicarbonamide.
In this example, in S2, the pulverizing time is 30 minutes, and the rotation speed of the pulverizer is 1700 r/min.
In this embodiment, the flame retardant is antimony trioxide, and the strong solvent is cyclohexane.
In this example, in S3, the mixing time was 130 minutes, and the rotational speed of the mixer was 450 r/min.
In this example, in S5, the cooling time was 30 minutes, and the cooling temperature was 40 ℃.
In this embodiment, in S5, glue is applied to the outer wall of the inner foam box.
In this embodiment, in S2, the mesh number of the sieving machine is 600 meshes.
EXAMPLE five
Referring to fig. 1-2, a method for processing an environment-friendly foam packing case, the method comprising:
s1: weighing the following raw materials in parts by weight: 50-80 parts of polystyrene particles, 30-50 parts of modified starch, 20-40 parts of strong solvent, 10-20 parts of flame retardant, 20-40 parts of absolute ethyl alcohol, 10-30 parts of methyl tertiary butyl ether and 10-20 parts of azodicarbonamide;
s2: preparing a pulverizer and a sieving machine, putting the polystyrene particles in S1 into the pulverizer for pulverization, putting the pulverized polystyrene into the sieving machine, and sieving materials with different sizes by the sieving machine to obtain polystyrene pulverized particles;
s3: preparing a mixer, putting the polystyrene crushed particles in S2 into the mixer, putting the modified starch, the strong solvent, the flame retardant, the absolute ethyl alcohol, the methyl tertiary butyl ether and the azodicarbonamide in S1 into the mixer, stirring and mixing the internal raw materials by the mixer, and softening the raw materials to obtain a mixed processing material;
s4: putting the mixed processing material into a foaming container and adjusting the pressure in the container to enable a foaming agent to obtain foaming expansion in the container, and expanding the mixed processing material to form foam holes to obtain a foaming material S3;
s5: preparing a first mold and a second mold, placing a part of the foaming material in the step S4 into the first mold for cooling and molding to obtain a foam inner box, taking out the foam inner box, attaching waterproof plastic films to the bottom and the side wall of the foam inner box, placing the rest foaming material into the second mold, placing the foam inner box with the waterproof plastic films into the second mold, and attaching and assembling the foam inner box with the waterproof plastic films into the second mold to obtain a finished foam box product.
In this embodiment, in S1, the raw materials are sequentially weighed according to the following parts by weight: 70 parts of polystyrene particles, 45 parts of modified starch, 40 parts of strong solvent, 20 parts of flame retardant, 35 parts of absolute ethyl alcohol, 10 parts of methyl tertiary butyl ether and 10 parts of azodicarbonamide.
In this example, in S2, the pulverizing time was 40 minutes, and the rotational speed of the pulverizer was 1200 r/min.
In this embodiment, the flame retardant is antimony trioxide, and the strong solvent is cyclohexane.
In this example, in S3, the mixing time was 140 minutes, and the rotational speed of the mixer was 500 r/min.
In this example, in S5, the cooling time was 35 minutes, and the cooling temperature was 45 ℃.
In this embodiment, in S5, glue is applied to the outer wall of the inner foam box.
In this embodiment, in S2, the mesh number of the sieving machine is 550 meshes.
Testing the degradability, durability, waterproofness and fire resistance of the foam packing box obtained in the first embodiment to the fifth embodiment through detection equipment, and recording the test result;
| degradability | Durability | Water-proof property | Fire resistance | |
| Example one | 56.33％ | 85.5％ | 99.95％ | 74.3％ |
| Example two | 54.79％ | 80.3％ | 99.96％ | 71.4℃ |
| EXAMPLE III | 49.87％ | 79.9％ | 99.31％ | 70.9℃ |
| Example four | 51.21％ | 82.3％ | 99.09％ | 72.5℃ |
| EXAMPLE five | 50.16％ | 81.7％ | 98.17％ | 74.1℃ |
The results show that: the processed foam packing box has better degradability, durability, waterproofness and fire resistance, and the first embodiment is the best embodiment.
Compared with the prior art, the invention has the technical progress that: the foam packing box has high reuse rate, the overall shape of the foam packing box is not easy to deform or break after being transported and used for many times, the foam packing box can be used for many times, and meanwhile, the foam packing box has high degradability and is very friendly to environment.
Claims (8)
1. The processing method of the environment-friendly foam packing box is characterized by comprising the following steps:
s1: weighing the following raw materials in parts by weight: 50-80 parts of polystyrene particles, 30-50 parts of modified starch, 20-40 parts of strong solvent, 10-20 parts of flame retardant, 20-40 parts of absolute ethyl alcohol, 10-30 parts of methyl tertiary butyl ether and 10-20 parts of azodicarbonamide;
s2: preparing a pulverizer and a sieving machine, putting the polystyrene particles in S1 into the pulverizer for pulverization, putting the pulverized polystyrene into the sieving machine, and sieving materials with different sizes by the sieving machine to obtain polystyrene pulverized particles;
s3: preparing a mixer, putting the polystyrene crushed particles in S2 into the mixer, putting the modified starch, the strong solvent, the flame retardant, the absolute ethyl alcohol, the methyl tertiary butyl ether and the azodicarbonamide in S1 into the mixer, stirring and mixing the internal raw materials by the mixer, and softening the raw materials to obtain a mixed processing material;
s4: putting the mixed processing material into a foaming container and adjusting the pressure in the container to enable a foaming agent to obtain foaming expansion in the container, and expanding the mixed processing material to form foam holes to obtain a foaming material S3;
s5: preparing a first mold and a second mold, placing a part of the foaming material in the step S4 into the first mold for cooling and molding to obtain a foam inner box, taking out the foam inner box, attaching waterproof plastic films to the bottom and the side wall of the foam inner box, placing the rest foaming material into the second mold, placing the foam inner box with the waterproof plastic films into the second mold, and attaching and assembling the foam inner box with the waterproof plastic films into the second mold to obtain a finished foam box product.
2. The processing method of the environment-friendly foam packing box as claimed in claim 1, wherein in the step S1, the raw materials are weighed in sequence according to the following parts by weight: 50 parts of polystyrene particles, 30 parts of modified starch, 20 parts of strong solvent, 10 parts of flame retardant, 20 parts of absolute ethyl alcohol, 10 parts of methyl tertiary butyl ether and 10 parts of azodicarbonamide.
3. The method as claimed in claim 1, wherein in step S2, the pulverizing time is 30-40 minutes, and the rotational speed of the pulverizer is 1000-2000 r/min.
4. The method for processing the environment-friendly foam packing box according to claim 1, wherein the flame retardant is antimony trioxide, and the strong solvent is cyclohexane.
5. The method as claimed in claim 1, wherein in S3, the mixing time is 150 minutes and the rotation speed of the mixer is 500r/min and 120-.
6. The method for processing the environment-friendly foam packing box according to claim 1, wherein in the step S5, the cooling time is 20-40 minutes, and the cooling temperature is 40-45 ℃.
7. The method as claimed in claim 1, wherein in S5, glue is applied to the outer wall of the inner foam box.
8. The method as claimed in claim 1, wherein in step S2, the screening machine has a mesh size of 500-700 meshes.
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