CN112677583A - Heat-preservation and heat-insulation vacuum packaging bag and preparation method thereof - Google Patents
Heat-preservation and heat-insulation vacuum packaging bag and preparation method thereof Download PDFInfo
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/90—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in food processing or handling, e.g. food conservation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
- Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics
Abstract
The invention discloses a heat-preservation and heat-insulation vacuum packaging bag and a preparation method thereof, and particularly relates to the technical field of food packaging bags, wherein the heat-preservation and heat-insulation vacuum packaging bag comprises a base layer, an outer layer and an inner layer, wherein the base layer comprises: nanometer titanium dioxide, starch, fish scale, fish skin, the rest is the lobster shell, and the outer layer includes: nanometer titanium dioxide, starch, shaddock peel, and the balance lobster shell; the inner layer includes: nanometer titanium dioxide, starch, durian peel, and lobster shell in balance. According to the invention, the lobster shells are used as main supporting raw materials of the vacuum packaging bag, so that the stability of the vacuum packaging bag in use can be effectively ensured, and the efficiency and the degradation degree of the vacuum packaging bag in degradation are improved, the starch is used as one of main auxiliary materials of the vacuum packaging bag, and the fish scale, the fish skin, the shaddock peel and the durian peel can effectively enhance the supporting effect of the packaging bag, so that the packaging bag is more stable, the degradation efficiency and the degradation degree of the packaging bag can be effectively improved, trace elements are improved for soil, and the resource utilization rate can be effectively improved.
Description
Technical Field
The invention relates to the technical field of food packaging bags, in particular to a heat-preservation and heat-insulation vacuum packaging bag and a preparation method thereof.
Background
A food packaging bag is a packaging design, and is convenient for keeping food fresh and storing food in life, so that the food packaging bag is produced. Food packaging bags can be divided into, according to their application ranges: common food packaging bags, vacuum food packaging bags, aerated food packaging bags, poached food packaging bags, steamed food packaging bags and functional food packaging bags. The vacuum packaging bag is a packaging method that a product is added into an airtight packaging container, and air in the container is pumped out to enable the sealed container to reach a preset vacuum degree. The vacuum packaging bag can realize heat preservation and insulation treatment on food. The performance of the food vacuum packaging material directly influences the storage life and the change of taste of the food. When vacuum packaging is performed, the selection of a good packaging material is the key to the success of packaging.
The existing heat-preservation and heat-insulation vacuum packaging bag has poor degradation effect, is easy to generate a large amount of waste materials and aggravates the white pollution degree.
Disclosure of Invention
In order to overcome the above defects of the prior art, embodiments of the present invention provide a heat-insulating vacuum packaging bag and a method for manufacturing the same.
In order to achieve the purpose, the invention provides the following technical scheme: the heat-preservation and heat-insulation vacuum packaging bag comprises a base layer, an outer layer and an inner layer, wherein the base layer comprises the following components in percentage by weight: 0.8-1.6% of nano titanium dioxide, 9.0-12.0% of starch, 15.0-18.6% of fish scales, 15.0-18.6% of fish skins and the balance of lobster shells, wherein the outer layer comprises the following components in percentage by weight: 0.8-1.6% of nano titanium dioxide, 9.0-12.0% of starch, 27.0-32.6% of shaddock peel and the balance of lobster shell; the inner layer comprises the following components in percentage by weight: 0.8-1.6% of nano titanium dioxide, 9.0-12.0% of starch, 27.0-32.6% of durian peel and the balance of lobster shell;
further, the base layer comprises the following components in percentage by weight: 0.8% of nano titanium dioxide, 9.0% of starch, 15.0% of fish scales, 15.0% of fish skin and the balance of lobster shells, wherein the outer layer comprises the following components in percentage by weight: 0.8% of nano titanium dioxide, 9.0% of starch, 27.0% of shaddock peel and the balance of lobster shell; the inner layer comprises the following components in percentage by weight: 0.8% of nano titanium dioxide, 9.0% of starch, 27.0% of durian peel and the balance of lobster shell.
Further, the base layer comprises the following components in percentage by weight: 1.6% of nano titanium dioxide, 12.0% of starch, 18.6% of fish scales, 18.6% of fish skin and the balance of lobster shells, wherein the outer layer comprises the following components in percentage by weight: 1.6 percent of nano titanium dioxide, 12.0 percent of starch, 32.6 percent of shaddock peel and the balance of lobster shell; the inner layer comprises the following components in percentage by weight: 1.6 percent of nano titanium dioxide, 12.0 percent of starch, 32.6 percent of durian peel and the balance of lobster shell.
Further, the base layer comprises the following components in percentage by weight: 1.2% of nano titanium dioxide, 10.5% of starch, 16.8% of fish scales, 16.8% of fish skin and the balance of lobster shells, wherein the outer layer comprises the following components in percentage by weight: 1.2% of nano titanium dioxide, 10.5% of starch, 29.8% of shaddock peel and the balance of lobster shell; the inner layer comprises the following components in percentage by weight: 1.2% of nano titanium dioxide, 10.5% of starch, 29.8% of durian peel and the balance of lobster shell.
Further, the fish scales, the fish skin, the shaddock skin, the durian skin and the lobster shells are all in a clean and dry state.
The invention also provides a preparation method of the heat-preservation and heat-insulation vacuum packaging bag, which comprises the following specific preparation steps:
the method comprises the following steps: weighing the nano titanium dioxide, the starch, the fish scales, the fish skin and the lobster shells in the base layer raw materials according to the weight percentage, weighing the nano titanium dioxide, the starch, the shaddock peel and the lobster shells in the outer layer raw materials according to the weight percentage, and weighing the nano titanium dioxide, the starch, the durian peel and the lobster shells in the inner layer raw materials according to the weight percentage;
step two: mixing and grinding the fish scales, the fish skin and the lobster shells in the basic raw materials in the step one to obtain mixed powder A, adding the nano titanium dioxide and the starch in the basic raw materials into the mixed powder A, uniformly stirring, adding the mixture into glycerol with the same weight, performing mechanical stirring and ultrasonic oscillation dispersion treatment for 60-80 min to obtain basic base liquid, adding the basic base liquid into a granulator for granulation to obtain basic master batches, and performing ultrasonic irradiation on the basic base master batches for 50-60 min to obtain modified basic master batches;
step three: mixing and grinding shaddock peel and lobster shells in the outer layer raw material obtained in the first step to obtain mixed powder B, adding nano titanium dioxide and starch in the outer layer raw material into the mixed powder B, uniformly stirring, adding the mixture into glycerol with the weight of a lamp, performing mechanical stirring and ultrasonic oscillation dispersion treatment for 60-80 min to obtain outer layer base liquid, adding the outer layer base liquid into a granulator for granulation to obtain outer layer master batches, and performing ultrasonic irradiation on the outer layer master batches for 50-60 min to obtain modified outer layer master batches;
step four: mixing and grinding durian peel and lobster shells in the inner layer raw materials in the step one to obtain mixed powder C, adding nano titanium dioxide and starch in the inner layer raw materials into the mixed powder C, uniformly stirring, adding into glycerol with the weight of a lamp, performing mechanical stirring and ultrasonic oscillation dispersion treatment for 60-80 min to obtain inner layer base liquid, adding the inner layer base liquid into a granulator for granulation to obtain inner layer master batches, and performing ultrasonic irradiation on the inner layer master batches for 50-60 min to obtain modified inner layer master batches;
step five: adding the modified base master batch prepared in the second step into a film blowing machine, blowing the material film at the film blowing temperature of 140-150 ℃, cooling and pressing edges to prepare a base layer;
step six: adding the modified outer-layer master batch prepared in the third step into a film blowing machine, blowing the material film at the film blowing temperature of 120-130 ℃, cooling and pressing edges to prepare an outer layer;
step seven: adding the modified inner layer master batch prepared in the fourth step into a film blowing machine, blowing the material film at the film blowing temperature of 120-130 ℃, cooling and pressing edges to prepare an inner layer;
step eight: laminating the inner layer prepared in the seventh step on the upper surface and the lower surface of the base layer prepared in the fifth step, and then performing calendering treatment to prepare semi-finished packaging paper;
step nine: laminating the outer layer prepared in the sixth step on the upper surface and the lower surface of the semi-finished packaging paper prepared in the eighth step, and then performing calendering treatment to prepare vacuum packaging paper;
step ten: and C, carrying out color printing and bag making on the vacuum packaging paper prepared in the step nine to obtain the heat-insulation vacuum packaging bag.
Further, the mechanical stirring and the ultrasonic oscillation in the second step, the third step and the fourth step adopt an alternating working mode.
Further, the mechanical agitation and the ultrasonic oscillation in the second step, the third step and the fourth step are performed simultaneously.
Further, the ultrasonic oscillation frequency in the second step, the third step and the fourth step is 1.8MHz, and the ultrasonic irradiation frequency is 60 KHz.
Further, in the ultrasonic irradiation process in the second step, the third step and the fourth step, the master batch is subjected to rolling stirring mixing treatment.
The invention has the technical effects and advantages that:
1. the heat-preservation and heat-insulation vacuum packaging bag prepared by adopting the raw material formula can effectively improve the degradation efficiency of the heat-preservation and heat-insulation vacuum packaging bag, has better degradation effect and higher degradation degree, and can effectively relieve white pollution; the nanometer titanium dioxide can be used as durable finish paint and effect pigment on the surface of the vacuum packaging bag to enhance the stability of the vacuum packaging bag when in use, and the lobster shells are used as main supporting raw materials of the base layer, the outer layer and the inner layer of the vacuum packaging bag to effectively ensure the stability of the vacuum packaging bag when in use, meanwhile, the efficiency and the degradation degree of the vacuum packaging bag during degradation are improved, the starch is used as one of the main auxiliary materials of the vacuum packaging bag, can effectively enhance the efficiency and degradation degree of the vacuum packaging bag, the fish scale, the fish skin, the shaddock peel and the durian peel can effectively enhance the supporting effect of the packaging bag, so that the packaging bag is more stable, the degradation efficiency and the degradation degree of the packaging bag can be effectively improved, meanwhile, the trace elements are improved for the soil, and in addition, most of various raw materials in the vacuum packaging bag are wastes generated in food processing or eating, so that the resource utilization rate can be effectively improved, and the energy can be effectively saved;
2. in the process of preparing the heat-preservation and heat-insulation vacuum packaging bag, the base layer raw material is subjected to mechanical stirring and ultrasonic oscillation dispersion treatment in the second step, so that the contact combination effect of various substances in the base layer raw material can be effectively enhanced, and the stability of the base layer raw material is ensured; mechanical stirring and ultrasonic oscillation dispersing treatment are carried out on the outer layer raw material in the third step, so that the contact combination effect of various substances in the outer layer raw material can be effectively enhanced, and the stability of the outer layer raw material is ensured; mechanical stirring and ultrasonic oscillation dispersion treatment are carried out on the inner layer raw materials in the fourth step, the contact combination effect of various substances in the inner layer raw materials can be effectively enhanced, the stability of the inner layer raw materials is ensured, the mechanical stirring and ultrasonic oscillation adopt an alternative working mode, large-range and small-range movement between the raw materials can be effectively enhanced, the contact combination effect between the raw materials is further enhanced, the stability of the vacuum packaging bag is ensured, ultrasonic irradiation treatment is carried out on the base layer master batch in the second step, surface modification can be carried out on the base layer master batch, the stability of the base layer can be effectively enhanced, ultrasonic irradiation treatment is carried out on the outer layer master batch in the second step, surface modification can be carried out on the outer layer master batch, and the stability of the outer layer can be effectively enhanced; in the second step, ultrasonic irradiation treatment is carried out on the inner-layer master batch, so that surface modification can be carried out on the inner-layer master batch, and the stability of the inner layer can be effectively enhanced; in the ultrasonic irradiation process, the master batch is subjected to rolling stirring mixing treatment, so that the omnibearing irradiation treatment of the outer wall of the master batch can be effectively realized, the surface modification effect is ensured, and the stability of the vacuum packaging bag is further enhanced.
Detailed Description
The following will clearly and completely describe the technical solutions in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. 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 1:
the invention provides a heat-preservation and heat-insulation vacuum packaging bag which comprises a base layer, an outer layer and an inner layer, wherein the base layer comprises the following components in percentage by weight: 0.8% of nano titanium dioxide, 9.0% of starch, 15.0% of fish scales, 15.0% of fish skin and the balance of lobster shells, wherein the outer layer comprises the following components in percentage by weight: 0.8% of nano titanium dioxide, 9.0% of starch, 27.0% of shaddock peel and the balance of lobster shell; the inner layer comprises the following components in percentage by weight: 0.8% of nano titanium dioxide, 9.0% of starch, 27.0% of durian peel and the balance of lobster shell;
the fish scales, the fish skin, the shaddock skin, the durian skin and the lobster shells are all in a clean and dry state;
the invention also provides a preparation method of the heat-preservation and heat-insulation vacuum packaging bag, which comprises the following specific preparation steps:
the method comprises the following steps: weighing the nano titanium dioxide, the starch, the fish scales, the fish skin and the lobster shells in the base layer raw materials according to the weight percentage, weighing the nano titanium dioxide, the starch, the shaddock peel and the lobster shells in the outer layer raw materials according to the weight percentage, and weighing the nano titanium dioxide, the starch, the durian peel and the lobster shells in the inner layer raw materials according to the weight percentage;
step two: mixing and grinding the fish scales, the fish skin and the lobster shells in the basic raw materials in the step one to obtain mixed powder A, adding the nano titanium dioxide and the starch in the basic raw materials into the mixed powder A, uniformly stirring, adding the mixture into glycerol with the same weight, performing mechanical stirring and ultrasonic oscillation dispersion treatment for 60-80 min to obtain basic base liquid, adding the basic base liquid into a granulator for granulation to obtain basic master batches, and performing ultrasonic irradiation on the basic base master batches for 50-60 min to obtain modified basic master batches;
step three: mixing and grinding shaddock peel and lobster shells in the outer layer raw material obtained in the first step to obtain mixed powder B, adding nano titanium dioxide and starch in the outer layer raw material into the mixed powder B, uniformly stirring, adding the mixture into glycerol with the weight of a lamp, performing mechanical stirring and ultrasonic oscillation dispersion treatment for 60-80 min to obtain outer layer base liquid, adding the outer layer base liquid into a granulator for granulation to obtain outer layer master batches, and performing ultrasonic irradiation on the outer layer master batches for 50-60 min to obtain modified outer layer master batches;
step four: mixing and grinding durian peel and lobster shells in the inner layer raw materials in the step one to obtain mixed powder C, adding nano titanium dioxide and starch in the inner layer raw materials into the mixed powder C, uniformly stirring, adding into glycerol with the weight of a lamp, performing mechanical stirring and ultrasonic oscillation dispersion treatment for 60-80 min to obtain inner layer base liquid, adding the inner layer base liquid into a granulator for granulation to obtain inner layer master batches, and performing ultrasonic irradiation on the inner layer master batches for 50-60 min to obtain modified inner layer master batches;
step five: adding the modified base master batch prepared in the second step into a film blowing machine, blowing the material film at the film blowing temperature of 140-150 ℃, cooling and pressing edges to prepare a base layer;
step six: adding the modified outer-layer master batch prepared in the third step into a film blowing machine, blowing the material film at the film blowing temperature of 120-130 ℃, cooling and pressing edges to prepare an outer layer;
step seven: adding the modified inner layer master batch prepared in the fourth step into a film blowing machine, blowing the material film at the film blowing temperature of 120-130 ℃, cooling and pressing edges to prepare an inner layer;
step eight: laminating the inner layer prepared in the seventh step on the upper surface and the lower surface of the base layer prepared in the fifth step, and then performing calendering treatment to prepare semi-finished packaging paper;
step nine: laminating the outer layer prepared in the sixth step on the upper surface and the lower surface of the semi-finished packaging paper prepared in the eighth step, and then performing calendering treatment to prepare vacuum packaging paper;
step ten: and C, carrying out color printing and bag making on the vacuum packaging paper prepared in the step nine to obtain the heat-insulation vacuum packaging bag.
And the mechanical stirring and the ultrasonic oscillation in the second step, the third step and the fourth step adopt an alternative working mode.
The ultrasonic oscillation frequency in the second step, the third step and the fourth step is 1.8MHz, and the ultrasonic irradiation frequency is 60 KHz.
And in the ultrasonic irradiation process in the second step, the third step and the fourth step, rolling, stirring and mixing the master batch.
Example 2:
different from the embodiment 1, the base layer comprises the following components in percentage by weight: 1.6% of nano titanium dioxide, 12.0% of starch, 18.6% of fish scales, 18.6% of fish skin and the balance of lobster shells, wherein the outer layer comprises the following components in percentage by weight: 1.6 percent of nano titanium dioxide, 12.0 percent of starch, 32.6 percent of shaddock peel and the balance of lobster shell; the inner layer comprises the following components in percentage by weight: 1.6 percent of nano titanium dioxide, 12.0 percent of starch, 32.6 percent of durian peel and the balance of lobster shell.
Example 3:
unlike the examples 1-2, the base layer comprises, in weight percent: 1.2% of nano titanium dioxide, 10.5% of starch, 16.8% of fish scales, 16.8% of fish skin and the balance of lobster shells, wherein the outer layer comprises the following components in percentage by weight: 1.2% of nano titanium dioxide, 10.5% of starch, 29.8% of shaddock peel and the balance of lobster shell; the inner layer comprises the following components in percentage by weight: 1.2% of nano titanium dioxide, 10.5% of starch, 29.8% of durian peel and the balance of lobster shell.
The heat-preservation and heat-insulation vacuum packaging bags prepared in the above examples 1-3, a comparison group heat-preservation and heat-insulation vacuum packaging bag, a comparison group two heat-preservation and heat-insulation vacuum packaging bag, a comparison group three heat-preservation and heat-insulation vacuum packaging bag, a comparison group four heat-preservation and heat-insulation vacuum packaging bag, a comparison group five heat-preservation and heat-insulation vacuum packaging bag, a comparison group six heat-preservation and heat-insulation vacuum packaging bag, a comparison group seven heat-preservation and heat-insulation vacuum packaging bag and a comparison group eight heat-preservation and heat-insulation vacuum packaging bag are respectively taken, the comparison group heat-preservation and heat-insulation vacuum packaging bag is a common heat-preservation and heat-insulation vacuum packaging bag on the market, the comparison group two heat-preservation and heat-insulation vacuum packaging bags do not contain nano titanium dioxide compared with the examples, the comparison group three heat-preservation and heat-, compared with the embodiment, the six heat-preservation and heat-insulation vacuum packaging bags in the comparison group have no lobster shell, the seven heat-preservation and heat-insulation vacuum packaging bags in the comparison group have no shaddock peel, compared with the embodiment, the eight heat-preservation and heat-insulation vacuum packaging bags in the comparison group have no durian peel, the heat-preservation and heat-insulation vacuum packaging bags prepared in the three embodiments and the eight heat-preservation and heat-insulation vacuum packaging bags in the comparison group are respectively tested in eleven groups, 30 samples are randomly selected for each group, the respective soil burying treatment is carried out, the soil burying weight is 10kg, the soil burying depth is 1m, the weight of the soil burying in different periods is observed, and the:
table one:
as can be seen from Table I, the heat-insulating vacuum packaging bag comprises the following raw materials in parts by weight: the base layer comprises the following components in percentage by weight: 1.2% of nano titanium dioxide, 10.5% of starch, 16.8% of fish scales, 16.8% of fish skin and the balance of lobster shells, wherein the outer layer comprises the following components in percentage by weight: 1.2% of nano titanium dioxide, 10.5% of starch, 29.8% of shaddock peel and the balance of lobster shell; the inner layer comprises the following components in percentage by weight: when 1.2% of nano titanium dioxide, 10.5% of starch, 29.8% of durian peel and the balance of lobster shells are adopted, the degradation efficiency of the heat-preservation and heat-insulation vacuum packaging bag can be effectively improved, the degradation effect is better, the degradation degree is higher, and white pollution can be effectively relieved; therefore, the embodiment 3 is a better implementation mode of the invention, the nano titanium dioxide in the formula can be used as durable finish paint and effect pigment on the surface of the vacuum packaging bag to enhance the stability of the vacuum packaging bag in use, the lobster shell contains a large amount of protein, chitin, lipid and mineral substances, the chitin can be made into chitosan, and the chitosan is nontoxic and easy to degrade, the lobster shell can be used as main supporting raw materials of a base layer, an outer layer and an inner layer of the vacuum packaging bag to effectively ensure the stability of the vacuum packaging bag in use and simultaneously improve the efficiency and the degradation degree of the vacuum packaging bag in degradation, the starch is high molecular carbohydrate, is polysaccharide consisting of a single type of sugar unit and can be degraded, and can be used as one of main auxiliary materials of the vacuum packaging bag to effectively enhance the efficiency and the degradation degree of the vacuum packaging bag, and fish scales contain abundant protein, fat and, the support effect of the base layer can be effectively enhanced by iron, zinc, calcium, various trace elements and colloid which are necessary for human bodies, so that the base layer is more stable, most components in the fish scales can be degraded, the trace elements can supplement the trace elements to soil, the fish skin contains abundant proteins and various trace elements, the proteins mainly comprise macromolecular collagen and mucopolysaccharide, the flexibility and the adhesiveness of the base layer can be effectively enhanced, the base layer is more stable, various components in the fish skin can be degraded, the trace elements can be supplemented to the soil, a large amount of crude proteins and crude fibers are contained in the shaddock peel, the shaddock peel contains a small amount of crude fat, crude ash, calcium and phosphorus, and trace elements such as copper, iron, manganese, zinc and amino acid, the stability of the outer layer can be effectively enhanced, and all the substances can be degraded, and the trace elements can be supplemented to the soil, the durian peel has high protein content, low fat content and rich mineral elements, and the durian peel contains 7.79% of crude protein, 1.58% of crude fat, 37.62% of crude fiber and 0.59% of phosphorus; the highest content of the mineral elements is magnesium with the content of 3318.94 mg/kg, and the second content is iron with the content of 147.28 mg/kg; the total amount of amino acid is 3.95%, account for 50.71% of crude protein, essential amino acid accounts for 39.24% of total amino acid, flavor amino acid (fresh, sweet amino acid) accounts for 49.87% of total amount of amino acid, can further strengthen the stability of the outer layer, the security performance is higher, and effectively improve the degradation efficiency and degradation degree of the inner layer, improve the microelement for soil simultaneously, in addition, various raw materials in the vacuum packaging bag are mostly waste produced when food processing or eating, can effectively improve the resource utilization rate, can effectively save energy.
Example 4
In the above preferred technical scheme, the present invention provides a heat preservation and insulation vacuum packaging bag, which comprises a base layer, an outer layer and an inner layer, wherein the base layer comprises, by weight: 1.2% of nano titanium dioxide, 10.5% of starch, 16.8% of fish scales, 16.8% of fish skin and the balance of lobster shells, wherein the outer layer comprises the following components in percentage by weight: 1.2% of nano titanium dioxide, 10.5% of starch, 29.8% of shaddock peel and the balance of lobster shell; the inner layer comprises the following components in percentage by weight: 1.2% of nano titanium dioxide, 10.5% of starch, 29.8% of durian peel and the balance of lobster shell.
The fish scales, the fish skin, the shaddock skin, the durian skin and the lobster shells are all in a clean and dry state.
The invention also provides a preparation method of the heat-preservation and heat-insulation vacuum packaging bag, which comprises the following specific preparation steps:
the method comprises the following steps: weighing the nano titanium dioxide, the starch, the fish scales, the fish skin and the lobster shells in the base layer raw materials according to the weight percentage, weighing the nano titanium dioxide, the starch, the shaddock peel and the lobster shells in the outer layer raw materials according to the weight percentage, and weighing the nano titanium dioxide, the starch, the durian peel and the lobster shells in the inner layer raw materials according to the weight percentage;
step two: mixing and grinding the fish scales, the fish skin and the lobster shells in the basic raw materials in the step one to obtain mixed powder A, adding the nano titanium dioxide and the starch in the basic raw materials into the mixed powder A, uniformly stirring, adding the mixture into glycerol with the same weight, performing mechanical stirring and ultrasonic oscillation dispersion treatment for 60-80 min to obtain basic base liquid, adding the basic base liquid into a granulator for granulation to obtain basic master batches, and performing ultrasonic irradiation on the basic base master batches for 50-60 min to obtain modified basic master batches;
step three: mixing and grinding shaddock peel and lobster shells in the outer layer raw material obtained in the first step to obtain mixed powder B, adding nano titanium dioxide and starch in the outer layer raw material into the mixed powder B, uniformly stirring, adding the mixture into glycerol with the weight of a lamp, performing mechanical stirring and ultrasonic oscillation dispersion treatment for 60-80 min to obtain outer layer base liquid, adding the outer layer base liquid into a granulator for granulation to obtain outer layer master batches, and performing ultrasonic irradiation on the outer layer master batches for 50-60 min to obtain modified outer layer master batches;
step four: mixing and grinding durian peel and lobster shells in the inner layer raw materials in the step one to obtain mixed powder C, adding nano titanium dioxide and starch in the inner layer raw materials into the mixed powder C, uniformly stirring, adding into glycerol with the weight of a lamp, performing mechanical stirring and ultrasonic oscillation dispersion treatment for 60-80 min to obtain inner layer base liquid, adding the inner layer base liquid into a granulator for granulation to obtain inner layer master batches, and performing ultrasonic irradiation on the inner layer master batches for 50-60 min to obtain modified inner layer master batches;
step five: adding the modified base master batch prepared in the second step into a film blowing machine, blowing the material film at the film blowing temperature of 140-150 ℃, cooling and pressing edges to prepare a base layer;
step six: adding the modified outer-layer master batch prepared in the third step into a film blowing machine, blowing the material film at the film blowing temperature of 120-130 ℃, cooling and pressing edges to prepare an outer layer;
step seven: adding the modified inner layer master batch prepared in the fourth step into a film blowing machine, blowing the material film at the film blowing temperature of 120-130 ℃, cooling and pressing edges to prepare an inner layer;
step eight: laminating the inner layer prepared in the seventh step on the upper surface and the lower surface of the base layer prepared in the fifth step, and then performing calendering treatment to prepare semi-finished packaging paper;
step nine: laminating the outer layer prepared in the sixth step on the upper surface and the lower surface of the semi-finished packaging paper prepared in the eighth step, and then performing calendering treatment to prepare vacuum packaging paper;
step ten: and C, carrying out color printing and bag making on the vacuum packaging paper prepared in the step nine to obtain the heat-insulation vacuum packaging bag.
And the mechanical stirring and the ultrasonic oscillation in the second step, the third step and the fourth step adopt an alternative working mode.
The ultrasonic oscillation frequency in the second step, the third step and the fourth step is 1.8MHz, and the ultrasonic irradiation frequency is 60 KHz.
And in the ultrasonic irradiation process in the second step, the third step and the fourth step, rolling, stirring and mixing the master batch.
Example 5
Unlike example 4, the mechanical agitation and ultrasonic oscillation in step two, step three and step four were carried out simultaneously.
Example 6
Different from the examples 4 to 5, the master batch was not subjected to the rolling stirring mixing treatment in the ultrasonic wave irradiation process in the second step, the third step and the fourth step.
Respectively taking the heat-preservation and heat-insulation vacuum packaging bags prepared in the embodiments 4-6, and performing experiments on a nine-heat-preservation and heat-insulation vacuum packaging bag of a control group and a ten-heat-preservation and heat-insulation vacuum packaging bag of a control group, wherein compared with the embodiments, the nine-heat-preservation and heat-insulation vacuum packaging bag of the control group is not subjected to ultrasonic oscillation treatment in the step two, the step three and the step four, and compared with the embodiments, the ten-heat-preservation and heat-insulation vacuum packaging bag of the control group is not subjected to ultrasonic irradiation treatment in the step two; the heat-preservation and heat-insulation vacuum packaging bags prepared in the three examples and two control groups of heat-preservation and heat-insulation vacuum packaging bags are respectively tested in five groups, 30 samples are randomly selected in each group, the samples are respectively buried in soil, the weight of the buried soil is 10kg, the depth of the buried soil is 1m, the weight of the buried soil in different periods is observed, and the test results are shown in the table two:
table two:
as can be seen from table two, in the process of preparing the heat-preservation and heat-insulation vacuum packaging bag, when the preparation method in the fourth embodiment is the preferred scheme of the present invention, the mechanical stirring and ultrasonic oscillation dispersion treatment are performed on the base layer raw material in the second step, so that the contact bonding effect of various substances in the base layer raw material can be effectively enhanced, and the stability of the base layer raw material is ensured; mechanical stirring and ultrasonic oscillation dispersing treatment are carried out on the outer layer raw material in the third step, so that the contact combination effect of various substances in the outer layer raw material can be effectively enhanced, and the stability of the outer layer raw material is ensured; mechanical stirring and ultrasonic oscillation dispersion treatment are carried out on the inner layer raw materials in the fourth step, the contact combination effect of various substances in the inner layer raw materials can be effectively enhanced, the stability of the inner layer raw materials is ensured, the mechanical stirring and ultrasonic oscillation adopt an alternative working mode, large-range and small-range movement between the raw materials can be effectively enhanced, the contact combination effect between the raw materials is further enhanced, the stability of the vacuum packaging bag is ensured, ultrasonic irradiation treatment is carried out on the base layer master batch in the second step, surface modification can be carried out on the base layer master batch, the stability of the base layer can be effectively enhanced, ultrasonic irradiation treatment is carried out on the outer layer master batch in the second step, surface modification can be carried out on the outer layer master batch, and the stability of the outer layer can be effectively enhanced; in the second step, ultrasonic irradiation treatment is carried out on the inner-layer master batch, so that surface modification can be carried out on the inner-layer master batch, and the stability of the inner layer can be effectively enhanced; in the ultrasonic irradiation process, the master batch is subjected to rolling stirring mixing treatment, so that the omnibearing irradiation treatment of the outer wall of the master batch can be effectively realized, the surface modification effect is ensured, and the stability of the vacuum packaging bag is further enhanced.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a thermal-insulated vacuum packaging bag keeps warm, includes basic unit, skin and inlayer, its characterized in that: the base layer comprises the following components in percentage by weight: 0.8-1.6% of nano titanium dioxide, 9.0-12.0% of starch, 15.0-18.6% of fish scales, 15.0-18.6% of fish skins and the balance of lobster shells, wherein the outer layer comprises the following components in percentage by weight: 0.8-1.6% of nano titanium dioxide, 9.0-12.0% of starch, 27.0-32.6% of shaddock peel and the balance of lobster shell; the inner layer comprises the following components in percentage by weight: 0.8-1.6% of nano titanium dioxide, 9.0-12.0% of starch, 27.0-32.6% of durian peel and the balance of lobster shell.
2. The heat-insulating vacuum packaging bag according to claim 1, characterized in that: the base layer comprises the following components in percentage by weight: 0.8% of nano titanium dioxide, 9.0% of starch, 15.0% of fish scales, 15.0% of fish skin and the balance of lobster shells, wherein the outer layer comprises the following components in percentage by weight: 0.8% of nano titanium dioxide, 9.0% of starch, 27.0% of shaddock peel and the balance of lobster shell; the inner layer comprises the following components in percentage by weight: 0.8% of nano titanium dioxide, 9.0% of starch, 27.0% of durian peel and the balance of lobster shell.
3. The heat-insulating vacuum packaging bag according to claim 1, characterized in that: the base layer comprises the following components in percentage by weight: 1.6% of nano titanium dioxide, 12.0% of starch, 18.6% of fish scales, 18.6% of fish skin and the balance of lobster shells, wherein the outer layer comprises the following components in percentage by weight: 1.6 percent of nano titanium dioxide, 12.0 percent of starch, 32.6 percent of shaddock peel and the balance of lobster shell; the inner layer comprises the following components in percentage by weight: 1.6 percent of nano titanium dioxide, 12.0 percent of starch, 32.6 percent of durian peel and the balance of lobster shell.
4. The heat-insulating vacuum packaging bag according to claim 1, characterized in that: the base layer comprises the following components in percentage by weight: 1.2% of nano titanium dioxide, 10.5% of starch, 16.8% of fish scales, 16.8% of fish skin and the balance of lobster shells, wherein the outer layer comprises the following components in percentage by weight: 1.2% of nano titanium dioxide, 10.5% of starch, 29.8% of shaddock peel and the balance of lobster shell; the inner layer comprises the following components in percentage by weight: 1.2% of nano titanium dioxide, 10.5% of starch, 29.8% of durian peel and the balance of lobster shell.
5. The heat-insulating vacuum packaging bag according to claim 1, characterized in that: the fish scales, the fish skin, the shaddock skin, the durian skin and the lobster shells are all in a clean and dry state.
6. The method for preparing a heat-preserving heat-insulating vacuum packaging bag according to any one of claims 1 to 5, wherein: the preparation method comprises the following specific steps:
the method comprises the following steps: weighing the nano titanium dioxide, the starch, the fish scales, the fish skin and the lobster shells in the base layer raw materials according to the weight percentage, weighing the nano titanium dioxide, the starch, the shaddock peel and the lobster shells in the outer layer raw materials according to the weight percentage, and weighing the nano titanium dioxide, the starch, the durian peel and the lobster shells in the inner layer raw materials according to the weight percentage;
step two: mixing and grinding the fish scales, the fish skin and the lobster shells in the basic raw materials in the step one to obtain mixed powder A, adding the nano titanium dioxide and the starch in the basic raw materials into the mixed powder A, uniformly stirring, adding the mixture into glycerol with the same weight, performing mechanical stirring and ultrasonic oscillation dispersion treatment for 60-80 min to obtain basic base liquid, adding the basic base liquid into a granulator for granulation to obtain basic master batches, and performing ultrasonic irradiation on the basic base master batches for 50-60 min to obtain modified basic master batches;
step three: mixing and grinding shaddock peel and lobster shells in the outer layer raw material obtained in the first step to obtain mixed powder B, adding nano titanium dioxide and starch in the outer layer raw material into the mixed powder B, uniformly stirring, adding the mixture into glycerol with the weight of a lamp, performing mechanical stirring and ultrasonic oscillation dispersion treatment for 60-80 min to obtain outer layer base liquid, adding the outer layer base liquid into a granulator for granulation to obtain outer layer master batches, and performing ultrasonic irradiation on the outer layer master batches for 50-60 min to obtain modified outer layer master batches;
step four: mixing and grinding durian peel and lobster shells in the inner layer raw materials in the step one to obtain mixed powder C, adding nano titanium dioxide and starch in the inner layer raw materials into the mixed powder C, uniformly stirring, adding into glycerol with the weight of a lamp, performing mechanical stirring and ultrasonic oscillation dispersion treatment for 60-80 min to obtain inner layer base liquid, adding the inner layer base liquid into a granulator for granulation to obtain inner layer master batches, and performing ultrasonic irradiation on the inner layer master batches for 50-60 min to obtain modified inner layer master batches;
step five: adding the modified base master batch prepared in the second step into a film blowing machine, blowing the material film at the film blowing temperature of 140-150 ℃, cooling and pressing edges to prepare a base layer;
step six: adding the modified outer-layer master batch prepared in the third step into a film blowing machine, blowing the material film at the film blowing temperature of 120-130 ℃, cooling and pressing edges to prepare an outer layer;
step seven: adding the modified inner layer master batch prepared in the fourth step into a film blowing machine, blowing the material film at the film blowing temperature of 120-130 ℃, cooling and pressing edges to prepare an inner layer;
step eight: laminating the inner layer prepared in the seventh step on the upper surface and the lower surface of the base layer prepared in the fifth step, and then performing calendering treatment to prepare semi-finished packaging paper;
step nine: laminating the outer layer prepared in the sixth step on the upper surface and the lower surface of the semi-finished packaging paper prepared in the eighth step, and then performing calendering treatment to prepare vacuum packaging paper;
step ten: and C, carrying out color printing and bag making on the vacuum packaging paper prepared in the step nine to obtain the heat-insulation vacuum packaging bag.
7. The method for preparing a heat-preserving heat-insulating vacuum packaging bag according to claim 6, characterized in that: and the mechanical stirring and the ultrasonic oscillation in the second step, the third step and the fourth step adopt an alternative working mode.
8. The method for preparing a heat-preserving heat-insulating vacuum packaging bag according to claim 6, characterized in that: the mechanical stirring and the ultrasonic oscillation in the second step, the third step and the fourth step are simultaneously carried out.
9. The method for preparing a heat-preserving heat-insulating vacuum packaging bag according to claim 6, characterized in that: the ultrasonic oscillation frequency in the second step, the third step and the fourth step is 1.8MHz, and the ultrasonic irradiation frequency is 60 KHz.
10. The method for preparing a heat-preserving heat-insulating vacuum packaging bag according to claim 6, characterized in that: and in the ultrasonic irradiation process in the second step, the third step and the fourth step, rolling, stirring and mixing the master batch.
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