CN113306103A - Preparation process of antibacterial and mildewproof sanitary packaging bag - Google Patents

Preparation process of antibacterial and mildewproof sanitary packaging bag Download PDF

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CN113306103A
CN113306103A CN202110560628.7A CN202110560628A CN113306103A CN 113306103 A CN113306103 A CN 113306103A CN 202110560628 A CN202110560628 A CN 202110560628A CN 113306103 A CN113306103 A CN 113306103A
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antibacterial
mildewproof
ion salt
parts
weight
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CN113306103B (en
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杨海金
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Fujian Minghe New Material Technology Co ltd
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Fujian Minghe New Material Technology Co ltd
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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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0018—Combinations of extrusion moulding with other shaping operations combined with shaping by orienting, stretching or shrinking, e.g. film blowing
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/022—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the choice of material
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/92—Measuring, controlling or regulating
    • 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
    • B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
    • B29C55/005—Shaping by stretching, e.g. drawing through a die; Apparatus therefor characterised by the choice of materials
    • 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
    • B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
    • B29C55/28—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of blown tubular films, e.g. by inflation
    • 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
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D11/00—Inks
    • C09D11/02—Printing inks
    • C09D11/03—Printing inks characterised by features other than the chemical nature of the binder
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/9258—Velocity
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92704—Temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7128—Bags, sacks, sachets
    • 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
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2323/04—Homopolymers or copolymers of ethene
    • C08J2323/06—Polyethene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2248—Oxides; Hydroxides of metals of copper
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2296—Oxides; Hydroxides of metals of zinc
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/16—Halogen-containing compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/24—Acids; Salts thereof
    • C08K3/26—Carbonates; Bicarbonates
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K9/00—Use of pretreated ingredients
    • C08K9/12—Adsorbed ingredients, e.g. ingredients on carriers
    • 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

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Packages (AREA)
  • Wrappers (AREA)

Abstract

The invention discloses a preparation process of an antibacterial and mildewproof sanitary packaging bag, which belongs to the field of packaging bags and sequentially comprises the steps of film blowing, printing, compounding and bag making, wherein the film blowing adopts three-layer co-extrusion, antibacterial and mildewproof resin particles are contained in a film body, printing ink adopts color ink, gloss oil or matt oil, and an ink layer contains an antibacterial and mildewproof agent. The invention has the beneficial effects that: the three antibacterial and mildewproof components of the silver ion salt, the zinc ion salt and the copper ion salt are mixed, and the zinc ion salt and the copper ion salt are attached to the surfaces of silver ion salt particles, so that the migration and loss speed of the silver ion salt can be effectively reduced and controlled, and the antibacterial and mildewproof time of the packaging bag is prolonged.

Description

Preparation process of antibacterial and mildewproof sanitary packaging bag
Technical Field
The invention relates to the field of packaging bags, in particular to a preparation process of an antibacterial and mildewproof sanitary packaging bag.
Background
At present, most of films used for daily sanitary articles and food packaging have no antibacterial effect. In particular to a film for packaging medicines and foods, which realizes the barrier function of various requirements and generally adopts a co-extruded film; the sanitary articles are packaged by simple single-layer or multi-layer single barrier-free function and antibacterial film product packaging bags. Because no packaging film with good antibacterial effect exists at present, the product is exposed after the product is unpacked, bacteria are easy to breed, the product is overdue and deteriorated, and the quality guarantee period is short.
The utility model discloses an antibiotic health supplies packaging film is disclosed like utility model patent publication No. CN207607823U, including an at least basic unit through crowded formation altogether, the surface of basic unit is formed with the antibiotic layer of ion, and the antibiotic layer of ion is the antibiotic layer of metal ion, and metal ion is one or several kinds in silver ion, copper ion, the zinc ion, and it has good antibiotic effect, but because metal ion can take place the migration in the use, its antibiotic effect can obviously worsen after a period of time, influences its use.
The invention further discloses an antibacterial packaging bag for paper diapers and a preparation method thereof as disclosed in the patent application with the publication number of CN111284095A, wherein the packaging bag is a three-layer co-extrusion film bag and consists of an antibacterial inner layer, a middle layer and an antibacterial outer layer, and the antibacterial inner layer comprises the following components in percentage by weight: 50-55% of LLDPE, 18-23% of LDPE, 26-30% of m-PE 20-30% of PPA, 0.1-0.5% of opening and 3-5% of antibacterial masterbatch; the middle layer comprises the following components in percentage by weight: 60-70% of LLDPE, 15-20% of LDPE and 15-20% of m-PE; the antibacterial outer layer comprises the following components in percentage by weight: 40-48% of LLDPE, 12-16% of LDPE, 26-40% of m-PE 33-40%, 0.1-0.5% of PPA, 1-5% of EVA, 0.1-0.5% of an opening agent and 1-3% of antibacterial master batch. The antibacterial master batch is a nano organic-inorganic composite antibacterial agent, has good antibacterial effect, but has the problems of high production cost, migration in the using process, obvious deterioration of the antibacterial effect after a period of time and influence on the use of the antibacterial master batch.
Accordingly, the present inventors have made extensive studies to solve the above problems and have made the present invention.
Disclosure of Invention
Aiming at the problems of high production cost, non-lasting antibacterial effect and complex process of the packaging bag in the prior art, the invention provides the preparation process of the antibacterial and mildewproof sanitary packaging bag, and the antibacterial agent, the zinc ion salt, the copper ion salt and the silver ion salt are subjected to synergistic antibacterial action by designing an antibacterial formula system of the antibacterial and mildewproof resin particles and using the antibacterial agent in a matched manner, so that the antibacterial effect is more efficient and lasting.
The specific technical scheme is as follows:
the preparation process of the antibacterial and mildewproof sanitary packaging bag comprises the step of blowing the film, wherein the blowing film adopts three-layer co-extrusion, and antibacterial and mildewproof resin particles are contained in a film body.
Preferably, the outermost layer and/or the inner layer of the film body contains antibacterial and antifungal resin particles.
Preferably, the antibacterial and antifungal resin particles are positioned at the outermost layer and the middle layer of the film body, or the antibacterial and antifungal resin particles are positioned at the middle layer and the inner layer of the film body.
Preferably, the antibacterial and mildewproof resin particles take submicron glass or zirconium phosphate as a carrier, wherein silver ion salts, zinc ion salts and copper ion salts are attached to the surface or inner layer of the carrier.
The three antibacterial components of the silver ion salt, the zinc ion salt and the copper ion salt are mixed, and the zinc ion salt and the copper ion salt are attached to the surfaces of silver ion salt particles, so that the migration and loss speed of the silver ion salt can be effectively reduced and controlled, and the antibacterial time of the packaging bag is prolonged.
Preferably, the antibacterial and mildewproof resin particle comprises the following components in parts by weight:
Figure BDA0003078868690000031
preferably, the submicron support has a diameter of 0.2 to 0.5 microns.
Preferably, the addition amount of the antibacterial and mildewproof resin particles in the three-layer film body accounts for 3.0-5.0 percent of the total addition amount of the film body in percentage by weight.
Preferably, each layer of film body comprises the following components in parts by weight:
100 parts of base material
3.0-5.0 parts of antibacterial and mildewproof resin particles.
Preferably, the base material is one of PE, CPE, PET, MOPP, BOPP, OPP, CPP and SPP.
Preferably, the preparation process further comprises printing, compounding and bag making in sequence, wherein in the printing process, color ink, gloss oil or matte oil ink are printed on the surface of the film body in sequence, then the printing surface is compounded with the other film body, and at least one of the color ink and the gloss oil or the matte oil ink contains an antibacterial agent.
Preferably, the ink contains 3.0-5.0% of antibacterial agent based on the total weight of the ink.
Preferably, the antibacterial agent comprises the following components in parts by weight:
10-40 parts of n-butyl isothiazolinone
40-60 parts of dipropylene glycol
1.0-5.0 parts of stabilizer.
The antibacterial agent destroys cell membranes through chemical reaction, so that protein is denatured and metabolism is hindered, and the antibacterial and mildewproof effects are achieved; when the bacterial cell membranes approach, the cell membranes are charged with negative charges, and the silver ions, the zinc ions and the copper ions can firmly adsorb the cell membranes by means of coulomb force and further penetrate the cell membranes to cause cell wall rupture, cytoplasm outflow is caused, and propagation of bacteria is hindered, so that sterilization and mildew prevention effects are achieved, and the synergistic cooperation of the antibacterial agent, the silver ions, the zinc ions and the copper ions enables the product to have a more efficient antibacterial effect.
Preferably, the thickness of the packaging bag film is 23-110 microns.
Preferably, the silver ion salt is nanoparticles formed by mixing silver carbonate and silver bromide, wherein the weight ratio of the silver carbonate to the silver bromide is (1-3): 1.
silver carbonate and silver bromide are adopted to be matched with each other, wherein the migration speed of silver ions in the silver carbonate is higher than that of silver bromide under the same silver ion concentration, so that the silver bromide plays a good buffering role in the migration process of the silver ions, namely, when the silver ions in the silver carbonate migrate outwards, silver bromide particles can play a role in attracting the outwards-migrating silver ions, and the outwards migration of the silver ions can be slowed down and stabilized.
Preferably, the zinc ion salt is zinc oxide, the copper ion salt is cuprous oxide, and the weight ratio of the zinc ion salt to the copper ion salt is (1.5-2): 1.
preferably, the particle diameter of the zinc ion salt and the particle diameter of the copper ion salt are 3-10 nanometers, and the particle diameter of the silver ion salt is 50-100 nanometers.
The zinc ion salt and the copper ion salt are attached to the surface of the silver ion salt, so that the good combined antibacterial effect and the good pollution resistance can be achieved, and the migration of the silver ion salt can be effectively slowed down, so that the antibacterial time is prolonged.
Preferably, the screw extruder comprises 5 heating zones from front to back during film blowing, the temperature is 167 ℃, 136 ℃, 152 ℃, 128 ℃ and 155 ℃, the die head temperature is 145-.
The screw extruder is heated in a high-temperature and low-temperature matching manner, so that the adhesive force of zinc ion salts and copper ion salts on the surface of silver ion salts can be effectively improved, a combined structure formed by combining a single silver ion salt particle with a plurality of zinc ion salts and copper ion salts is formed, and the combined migration structure of the silver ions, the zinc ions and the copper ions is more stable.
Has the advantages that:
the technical scheme of the invention has the following beneficial effects:
(1) the three antibacterial components of the silver ion salt, the zinc ion salt and the copper ion salt are mixed, and the zinc ion salt and the copper ion salt are attached to the surfaces of silver ion salt particles, so that the migration and loss speed of the silver ion salt can be effectively reduced and controlled, and the antibacterial time of the packaging bag is prolonged.
(2) Silver carbonate and silver bromide are adopted to be matched with each other, wherein the migration speed of silver ions in the silver carbonate is higher than that of silver bromide under the same silver ion concentration, so that the silver bromide plays a good buffering role in the migration process of the silver ions, namely, when the silver ions in the silver carbonate migrate outwards, silver bromide particles can play a role in attracting the outwards-migrating silver ions, and the outwards migration of the silver ions can be slowed down and stabilized.
(3) The screw extruder is heated in a high-temperature and low-temperature matching manner, so that the adhesive force of zinc ion salts and copper ion salts on the surface of silver ion salts can be effectively improved, a combined structure formed by combining a single silver ion salt particle with a plurality of zinc ion salts and copper ion salts is formed, and the combined migration structure of the silver ions, the zinc ions and the copper ions is more stable.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic cross-sectional view of a preferred antibacterial and antifungal hygienic packaging bag of the present invention.
In the figure:
1-a membrane body; 2-printing ink; 3-antibacterial and mildewproof resin particles.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the embodiments of the present invention will be described in detail and completely with reference to the following examples, and it is to be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, provided in the examples, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
In the embodiment, the antibacterial formula system of the antibacterial and mildewproof resin particles 3 is designed and the antibacterial agent is used in a matching way, so that the antibacterial agent, the zinc ion salt, the copper ion salt and the silver ion salt are subjected to synergistic antibacterial, and the antibacterial effect is more efficient and lasting. The specific technical scheme is as follows:
the preparation process of the antibacterial and mildewproof sanitary packaging bag comprises the step of blowing the film, wherein the blowing film adopts three-layer co-extrusion, and the film body 1 contains antibacterial and mildewproof resin particles 3.
As a preferred embodiment, the outermost layer and/or the inner layer of the film body 1 contains the antibacterial and antifungal resin particles 3.
As a preferable embodiment, the antimicrobial and antifungal resin particles 3 are located at the outermost layer and the middle layer of the film body 1, or the antimicrobial and antifungal resin particles 3 are located at the middle layer and the inner layer of the film body 1.
In a preferred embodiment, the antibacterial and antifungal resin particles 3 are made of submicron glass or zirconium phosphate as a carrier, wherein silver ion salt, zinc ion salt and copper ion salt are attached to the surface or inner layer of the carrier.
The three antibacterial components of the silver ion salt, the zinc ion salt and the copper ion salt are mixed, and the zinc ion salt and the copper ion salt are attached to the surfaces of silver ion salt particles, so that the migration and loss speed of the silver ion salt can be effectively reduced and controlled, and the antibacterial time of the packaging bag is prolonged.
As a preferred embodiment, the antibacterial and antifungal resin particle 3 comprises the following components in parts by weight:
Figure BDA0003078868690000071
as a preferred embodiment, the submicron support has a diameter of 0.2 to 0.5 micron.
As a preferable embodiment, the addition amount of the antibacterial and mildewproof resin particles 3 in the three-layer film body 1 accounts for 3.0 to 5.0 percent of the total addition amount of the film body 1 in percentage by weight.
As a preferred embodiment, each film body 1 comprises the following components in parts by weight:
100 parts of base material
3.0-5.0 parts of antibacterial and mildewproof resin particles.
In a preferred embodiment, the material of the substrate is one of PE, CPE, PET, MOPP, BOPP, OPP, CPP and SPP.
As a preferable embodiment, the preparation process further comprises printing, compounding and bag making in sequence, wherein in the printing process, a color ink, a gloss oil or a matte oil ink are printed on the surface of the film body 1 in sequence, and then the printed surface is compounded with another film body 1, and at least one of the color ink and the gloss oil or the matte oil ink contains an antibacterial agent.
As a preferred embodiment, the ink 2 contains an antibacterial agent in an amount of 3.0 to 5.0% by weight based on the total weight of the ink 2.
As a preferred embodiment, the antibacterial agent comprises the following components in parts by weight:
10-40 parts of n-butyl isothiazolinone
40-60 parts of dipropylene glycol
1.0-5.0 parts of stabilizer.
The antibacterial agent destroys cell membranes through chemical reaction, so that protein is denatured and metabolism is hindered, and the antibacterial and mildewproof effects are achieved; when the bacterial cell membranes approach, the cell membranes are charged with negative charges, and the silver ions, the zinc ions and the copper ions can firmly adsorb the cell membranes by means of coulomb force and further penetrate the cell membranes to cause cell wall rupture, cytoplasm outflow is caused, and propagation of bacteria is hindered, so that sterilization and mildew prevention effects are achieved, and the synergistic cooperation of the antibacterial agent, the silver ions, the zinc ions and the copper ions enables the product to have a more efficient antibacterial effect.
In a preferred embodiment, the thickness of the packaging film is 23 to 110 μm.
As a preferred embodiment, the silver ion salt is nanoparticles formed by mixing silver carbonate and silver bromide, wherein the weight ratio of the silver carbonate to the silver bromide is (1-3): 1.
silver carbonate and silver bromide are adopted to be matched with each other, wherein the migration speed of silver ions in the silver carbonate is higher than that of silver bromide under the same silver ion concentration, so that the silver bromide plays a good buffering role in the migration process of the silver ions, namely, when the silver ions in the silver carbonate migrate outwards, silver bromide particles can play a role in attracting the outwards-migrating silver ions, and the outwards migration of the silver ions can be slowed down and stabilized.
As a preferred embodiment, the zinc ion salt is zinc oxide, the copper ion salt is cuprous oxide, and the weight ratio of the zinc ion salt to the copper ion salt is (1.5-2): 1.
in a preferred embodiment, the particle diameter of the zinc ion salt and the particle diameter of the copper ion salt are 3 to 10 nanometers, and the particle diameter of the silver ion salt is 50 to 100 nanometers.
The zinc ion salt and the copper ion salt are attached to the surface of the silver ion salt, so that the good combined antibacterial effect and the good pollution resistance can be achieved, and the migration of the silver ion salt can be effectively slowed down, so that the antibacterial time is prolonged.
As a preferred embodiment, the screw extruder comprises 5 heating zones from front to back during film blowing, the temperature is 167 ℃, 136 ℃, 152 ℃, 128 ℃, 155 ℃, the die temperature is 145-.
The screw extruder is heated in a high-temperature and low-temperature matching manner, so that the adhesive force of zinc ion salts and copper ion salts on the surface of silver ion salts can be effectively improved, a combined structure formed by combining a single silver ion salt particle with a plurality of zinc ion salts and copper ion salts is formed, and the combined migration structure of the silver ions, the zinc ions and the copper ions is more stable.
The beneficial effects of the present invention are further described by several sets of examples and comparative examples, and the following examples and comparative examples are provided to illustrate the selection of the PE material as the substrate.
Example one
The preparation process of the packaging bag in the embodiment comprises the following steps:
the method comprises the following steps: and blowing the film, namely adopting three-layer co-extrusion, adding antibacterial and mildewproof resin particles which are prepared from 60 parts by weight of submicron glass, 15 parts by weight of silver ion salt, 13 parts by weight of zinc ion salt and 10 parts by weight of copper ion salt into the film body, wherein the addition accounts for 3.0-5.0% of the total addition of the film body, and in the film blowing process, 5 heating regions are arranged in the screw extruder from front to back, the temperature is 167 ℃, 136 ℃, 152 ℃, 128 ℃, 155 ℃, the die head temperature is 145-fold and 150 ℃, and the rotating speed is 132-fold and 145 turns/min.
Step two: printing, namely printing colored ink and varnish ink on the surface of the film body in sequence, wherein the ink contains an antibacterial agent accounting for 3.0-5.0% of the total weight of the ink.
Step three: and (3) compounding, namely compounding the two printed film bodies, and forming an ink layer between the two film bodies.
Step four: making into packaging bag with film thickness of 23-110 μm.
Wherein, in the first step, the diameter of the sub-micron glass is 0.2-0.5 micron, and the silver ion salt is prepared by mixing the following components in a weight ratio of 2: 1, the silver carbonate and the silver bromide are mixed, the particle diameter of the silver ion salt is 50-100 nanometers, the zinc ion salt is zinc oxide, the copper ion salt is cuprous oxide, and the weight ratio of the zinc ion salt to the copper ion salt is 2: 1, and the particle diameter of zinc ion salt and copper ion salt is 3-10 nanometers; the film body consists of 100 weight parts of PE base material and 3.0-5.0 weight parts of antibacterial and mildewproof resin particles; the antibacterial agent comprises 40 parts by weight of n-butyl isothiazolinone, 55 parts by weight of dipropylene glycol and 5 parts by weight of stabilizer.
Example two
The preparation process of the packaging bag in the embodiment comprises the following steps:
the method comprises the following steps: and blowing the film, namely adopting three-layer co-extrusion, adding antibacterial and mildewproof resin particles which are prepared from 50 parts by weight of submicron glass, 10 parts by weight of silver ion salt, 10 parts by weight of zinc ion salt and 5 parts by weight of copper ion salt into the film body, wherein the addition accounts for 3.0-5.0% of the total addition of the film body, and in the film blowing process, 5 heating regions are arranged in the screw extruder from front to back, the temperature is 167 ℃, 136 ℃, 152 ℃, 128 ℃, 155 ℃, the die head temperature is 145-fold and 150 ℃, and the rotating speed is 132-fold and 145 turns/min.
Step two: printing, namely printing colored ink and matte ink on the surface of the film body in sequence, wherein the ink contains an antibacterial agent accounting for 3.0-5.0% of the total weight of the ink.
Step three: and (3) compounding, namely compounding the two printed film bodies, and forming an ink layer between the two film bodies.
Step four: making into packaging bag with film thickness of 23-110 μm.
Wherein, in the first step, the diameter of the sub-micron glass is 0.2-0.5 micron, and the silver ion salt is prepared by mixing the following components in a weight ratio of 1: 1, the silver carbonate and the silver bromide are mixed, the particle diameter of the silver ion salt is 50-100 nanometers, the zinc ion salt is zinc oxide, the copper ion salt is cuprous oxide, and the weight ratio of the zinc ion salt to the copper ion salt is 1.5: 1, and the particle diameter of zinc ion salt and copper ion salt is 3-10 nanometers; the film body consists of 100 weight parts of PE base material and 3.0-5.0 weight parts of antibacterial and mildewproof resin particles; the antibacterial agent comprises 40 parts by weight of n-butyl isothiazolinone, 60 parts by weight of dipropylene glycol and 5 parts by weight of stabilizer.
EXAMPLE III
The preparation process of the packaging bag in the embodiment comprises the following steps:
the method comprises the following steps: and blowing the film, namely adopting three-layer co-extrusion, adding antibacterial and mildewproof resin particles which are prepared from 70 parts by weight of submicron glass, 20 parts by weight of silver ion salt, 15 parts by weight of zinc ion salt and 15 parts by weight of copper ion salt into the film body, wherein the addition accounts for 3.0-5.0% of the total addition of the film body, and in the film blowing process, 5 heating regions are arranged in the screw extruder from front to back, the temperature is 167 ℃, 136 ℃, 152 ℃, 128 ℃, 155 ℃, the die head temperature is 145-fold and 150 ℃, and the rotating speed is 132-fold and 145 turns/min.
Step two: printing, namely printing colored ink and varnish ink on the surface of the film body in sequence, wherein the ink contains an antibacterial agent accounting for 3.0-5.0% of the total weight of the ink.
Step three: and (3) compounding, namely compounding the two printed film bodies, and forming an ink layer between the two film bodies.
Step four: making into packaging bag with film thickness of 23-110 μm.
Wherein, in the first step, the diameter of the sub-micron glass is 0.2-0.5 micron, and the silver ion salt is prepared by mixing the following components in a weight ratio of 3: 1, the silver carbonate and the silver bromide are mixed, the particle diameter of the silver ion salt is 50-100 nanometers, the zinc ion salt is zinc oxide, the copper ion salt is cuprous oxide, and the weight ratio of the zinc ion salt to the copper ion salt is 2: 1, and the particle diameter of zinc ion salt and copper ion salt is 3-10 nanometers; the film body consists of 100 weight parts of PE base material and 3.0-5.0 weight parts of antibacterial and mildewproof resin particles; the antibacterial agent comprises the components of 10 parts by weight of n-butyl isothiazolinone, 40 parts by weight of dipropylene glycol and 1 part by weight of stabilizer.
Example four
The preparation process of the packaging bag in the embodiment comprises the following steps:
the method comprises the following steps: and blowing the film, namely adopting three-layer co-extrusion, adding antibacterial and mildewproof resin particles which are prepared from 60 parts by weight of submicron zirconium phosphate, 15 parts by weight of silver ion salt, 13 parts by weight of zinc ion salt and 10 parts by weight of copper ion salt into the film body, wherein the addition accounts for 3.5-4.5% of the total addition of the film body, and in the film blowing process, 5 heating regions are arranged in a screw extruder from front to back, the temperatures are 167 ℃, 136 ℃, 152 ℃, 128 ℃ and 155 ℃, the die head temperature is 145-.
Step two: printing, namely printing colored ink and gloss oil ink on the surface of the film body in sequence, wherein the ink contains antibacterial and mildewproof resin particles accounting for 1% of the total weight of the ink.
Step three: and (3) compounding, namely compounding the two printed film bodies, and forming an ink layer between the two film bodies.
Step four: making into packaging bag with film thickness of 23-110 μm.
Wherein, in the first step, the diameter of the sub-micron zirconium phosphate is 0.2-0.5 micron, and the silver ion salt is prepared by mixing the following components in a weight ratio of 2: 1, the silver carbonate and the silver bromide are mixed, the particle diameter of the silver ion salt is 50-100 nanometers, the zinc ion salt is zinc oxide, the copper ion salt is cuprous oxide, and the weight ratio of the zinc ion salt to the copper ion salt is 2: 1, and the particle diameter of zinc ion salt and copper ion salt is 3-10 nanometers; the film body consists of 100 weight parts of PE base material and 3.0-5.0 weight parts of antibacterial and mildewproof resin particles; the antibacterial agent comprises 40 parts by weight of n-butyl isothiazolinone, 55 parts by weight of dipropylene glycol and 5 parts by weight of stabilizer.
Comparative example 1
The preparation process of the packaging bag in the comparative example comprises the following steps:
the method comprises the following steps: and blowing the film, namely adopting three-layer co-extrusion, adding antibacterial and mildewproof resin particles which are prepared from 60 parts by weight of submicron glass, 15 parts by weight of silver ion salt and 10 parts by weight of copper ion salt into the film body, wherein the addition accounts for 3.0-5.0% of the total addition of the film body, and in the film blowing process, 5 heating regions are arranged in the screw extruder from front to back, the temperature is 167 ℃, 136 ℃, 152 ℃, 128 ℃, 155 ℃, the die head temperature is 145-.
Step two: printing, namely printing colored ink and varnish ink on the surface of the film body in sequence, wherein the ink contains an antibacterial agent accounting for 3.0-5.0% of the total weight of the ink.
Step three: and (3) compounding, namely compounding the two printed film bodies, and forming an ink layer between the two film bodies.
Step four: making into packaging bag with film thickness of 23-110 μm.
Wherein, in the first step, the diameter of the sub-micron glass is 0.2-0.5 micron, and the silver ion salt is prepared by mixing the following components in a weight ratio of 2: 1, the silver carbonate and the silver bromide are mixed, the particle diameter of the silver ion salt is 50-100 nanometers, the copper ion salt is cuprous oxide, and the particle diameter of the copper ion salt is 3-10 nanometers; the film body consists of 100 weight parts of PE base material and 3.0-5.0 weight parts of antibacterial and mildewproof resin particles; the antibacterial agent comprises 40 parts by weight of n-butyl isothiazolinone, 55 parts by weight of dipropylene glycol and 5 parts by weight of stabilizer.
Comparative example No. two
The preparation process of the packaging bag in the comparative example comprises the following steps:
the method comprises the following steps: and blowing the film, namely adopting three-layer co-extrusion, adding antibacterial and mildewproof resin particles which are prepared from 60 parts by weight of submicron glass, 15 parts by weight of silver ion salt and 13 parts by weight of zinc ion salt into the film body, wherein the addition accounts for 3.0-5.0% of the total addition of the film body, and in the film blowing process, 5 heating regions are arranged in the screw extruder from front to back, the temperature is 167 ℃, 136 ℃, 152 ℃, 128 ℃ and 155 ℃, the die head temperature is 145-.
Step two: printing, namely printing colored ink and gloss oil ink on the surface of the film body in sequence, wherein the ink contains antibacterial and mildewproof resin particles accounting for 1% of the total weight of the ink.
Step three: and (3) compounding, namely compounding the two printed film bodies, and forming an ink layer between the two film bodies.
Step four: making into packaging bag with film thickness of 23-110 μm.
Wherein, in the first step, the diameter of the sub-micron glass is 0.2-0.5 micron, and the silver ion salt is prepared by mixing the following components in a weight ratio of 2: 1, the silver carbonate and the silver bromide are mixed, the particle diameter of the silver ion salt is 50-100 nanometers, the zinc ion salt is zinc oxide, and the particle diameter of the zinc ion salt is 3-10 nanometers; the film body consists of 100 weight parts of PE base material and 3.0-5.0 weight parts of antibacterial and mildewproof resin particles; the antibacterial agent comprises 40 parts by weight of n-butyl isothiazolinone, 55 parts by weight of dipropylene glycol and 5 parts by weight of stabilizer.
Comparative example No. three
The preparation process of the packaging bag in the comparative example comprises the following steps:
the method comprises the following steps: and blowing the film, namely adopting three-layer co-extrusion, adding antibacterial and mildewproof resin particles which are prepared from 60 parts by weight of submicron glass, 15 parts by weight of silver ion salt, 13 parts by weight of zinc ion salt and 10 parts by weight of copper ion salt into the film body, wherein the addition accounts for 3.0-5.0% of the total addition of the film body, and in the film blowing process, 5 heating regions are arranged in the screw extruder from front to back, the temperature is 167 ℃, 136 ℃, 152 ℃, 128 ℃, 155 ℃, the die head temperature is 145-fold and 150 ℃, and the rotating speed is 132-fold and 145 turns/min.
Step two: printing, namely printing colored ink and varnish ink on the surface of the film body in sequence, wherein the ink contains an antibacterial agent accounting for 3.0-5.0% of the total weight of the ink.
Step three: and (3) compounding, namely compounding the two printed film bodies, and forming an ink layer between the two film bodies.
Step four: making into packaging bag with film thickness of 23-110 μm.
Wherein, in the first step, the diameter of the sub-micron glass is 0.2-0.5 micron, the silver ion salt is silver carbonate, the diameter of the silver ion salt particle is 50-100 nanometers, the zinc ion salt is zinc oxide, the copper ion salt is cuprous oxide, and the weight ratio of the zinc ion salt to the copper ion salt is 2: 1, and the particle diameter of zinc ion salt and copper ion salt is 3-10 nanometers; the film body consists of 100 weight parts of PE base material and 3.0-5.0 weight parts of antibacterial and mildewproof resin particles; the antibacterial agent comprises 40 parts by weight of n-butyl isothiazolinone, 55 parts by weight of dipropylene glycol and 5 parts by weight of stabilizer.
Comparative example No. four
The preparation process of the packaging bag in the comparative example comprises the following steps:
the method comprises the following steps: and blowing the film, namely adopting three-layer co-extrusion, adding antibacterial and mildewproof resin particles which are prepared from 60 parts by weight of submicron glass, 15 parts by weight of silver ion salt, 13 parts by weight of zinc ion salt and 10 parts by weight of copper ion salt into the film body, wherein the addition accounts for 3.0-5.0% of the total addition of the film body, and in the film blowing process, 5 heating regions are arranged in the screw extruder from front to back, the temperature is 167 ℃, 136 ℃, 152 ℃, 128 ℃, 155 ℃, the die head temperature is 145-fold and 150 ℃, and the rotating speed is 132-fold and 145 turns/min.
Step two: printing, namely printing colored ink and varnish ink on the surface of the film body in sequence, wherein the ink contains an antibacterial agent accounting for 3.0-5.0% of the total weight of the ink.
Step three: and (3) compounding, namely compounding the two printed film bodies, and forming an ink layer between the two film bodies.
Step four: making into packaging bag with film thickness of 23-110 μm.
In the first step, the diameter of the sub-micron glass is 0.2-0.5 micron, the silver ion salt is silver bromide, the diameter of silver ion salt particles is 50-100 nanometers, the zinc ion salt is zinc oxide, the copper ion salt is cuprous oxide, and the weight ratio of the zinc ion salt to the copper ion salt is 2: 1, and the particle diameter of zinc ion salt and copper ion salt is 3-10 nanometers; the film body consists of 100 weight parts of PE base material and 3.0-5.0 weight parts of antibacterial and mildewproof resin particles; the antibacterial agent comprises 40 parts by weight of n-butyl isothiazolinone, 55 parts by weight of dipropylene glycol and 5 parts by weight of stabilizer.
Comparative example five
The preparation process of the packaging bag in the comparative example comprises the following steps:
the method comprises the following steps: and blowing the film, namely adopting three-layer co-extrusion, adding antibacterial and mildewproof resin particles which are prepared from 60 parts by weight of submicron glass, 15 parts by weight of silver ion salt, 13 parts by weight of zinc ion salt and 10 parts by weight of copper ion salt into the film body, wherein the addition accounts for 3.0-5.0% of the total addition of the film body, and in the film blowing process, 5 heating regions are arranged in the screw extruder from front to back, the temperature is 155 ℃, 167 ℃, 155 ℃, the die head temperature is 145-.
Step two: printing, namely printing colored ink and varnish ink on the surface of the film body in sequence, wherein the ink contains an antibacterial agent accounting for 3.0-5.0% of the total weight of the ink.
Step three: and (3) compounding, namely compounding the two printed film bodies, and forming an ink layer between the two film bodies.
Step four: making into packaging bag with film thickness of 23-110 μm.
Wherein, in the first step, the diameter of the sub-micron glass is 0.2-0.5 micron, and the silver ion salt is prepared by mixing the following components in a weight ratio of 2: 1, the silver carbonate and the silver bromide are mixed, the particle diameter of the silver ion salt is 50-100 nanometers, the zinc ion salt is zinc oxide, the copper ion salt is cuprous oxide, and the weight ratio of the zinc ion salt to the copper ion salt is 2: 1, and the particle diameter of zinc ion salt and copper ion salt is 3-10 nanometers; the film body consists of 100 weight parts of PE base material and 3.0-5.0 weight parts of antibacterial and mildewproof resin particles; the antibacterial agent comprises 40 parts by weight of n-butyl isothiazolinone, 55 parts by weight of dipropylene glycol and 5 parts by weight of stabilizer.
Comparative example six
The preparation process of the packaging bag in the comparative example comprises the following steps:
the method comprises the following steps: and blowing the film, namely adopting three-layer co-extrusion, adding antibacterial and mildewproof resin particles which are prepared from 60 parts by weight of submicron glass, 15 parts by weight of silver ion salt, 13 parts by weight of zinc ion salt and 10 parts by weight of copper ion salt into the film body, wherein the addition accounts for 6.0-8.0% of the total addition of the film body, and in the film blowing process, 5 heating regions are arranged in the screw extruder from front to back, the temperature is 167 ℃, 136 ℃, 152 ℃, 128 ℃, 155 ℃, the die head temperature is 145-fold and 150 ℃, and the rotating speed is 132-fold and 145 turns/min.
Step two: printing, namely printing colored ink and varnish ink on the surface of the film body in sequence, wherein the ink contains an antibacterial agent accounting for 3.0-5.0% of the total weight of the ink.
Step three: and (3) compounding, namely compounding the two printed film bodies, and forming an ink layer between the two film bodies.
Step four: making into packaging bag with film thickness of 23-110 μm.
Wherein, in the first step, the diameter of the sub-micron glass is 0.2-0.5 micron, and the silver ion salt is prepared by mixing the following components in a weight ratio of 2: 1, the silver carbonate and the silver bromide are mixed, the particle diameter of the silver ion salt is 50-100 nanometers, the zinc ion salt is zinc oxide, the copper ion salt is cuprous oxide, and the weight ratio of the zinc ion salt to the copper ion salt is 2: 1, and the particle diameter of zinc ion salt and copper ion salt is 3-10 nanometers; the film body consists of 100 weight parts of PE base material and 6.0-8.0 weight parts of antibacterial and mildewproof resin particles; the antibacterial agent comprises 40 parts by weight of n-butyl isothiazolinone, 55 parts by weight of dipropylene glycol and 5 parts by weight of stabilizer.
Comparative example seven
The preparation process of the packaging bag in the comparative example comprises the following steps:
the method comprises the following steps: and blowing the film, namely adopting three-layer co-extrusion, adding antibacterial and mildewproof resin particles which are prepared from 60 parts by weight of submicron glass, 15 parts by weight of silver ion salt, 13 parts by weight of zinc ion salt and 10 parts by weight of copper ion salt into the film body, wherein the addition accounts for 3.0-5.0% of the total addition of the film body, and in the film blowing process, 5 heating regions are arranged in the screw extruder from front to back, the temperature is 167 ℃, 136 ℃, 152 ℃, 128 ℃, 155 ℃, the die head temperature is 145-fold and 150 ℃, and the rotating speed is 132-fold and 145 turns/min.
Step two: printing, namely printing colored ink and varnish ink on the surface of the film body in sequence, wherein the ink contains an antibacterial agent accounting for 6.0-8.0% of the total weight of the ink.
Step three: and (3) compounding, namely compounding the two printed film bodies, and forming an ink layer between the two film bodies.
Step four: making into packaging bag with film thickness of 23-110 μm.
Wherein, in the first step, the diameter of the sub-micron glass is 0.2-0.5 micron, and the silver ion salt is prepared by mixing the following components in a weight ratio of 2: 1, the silver carbonate and the silver bromide are mixed, the particle diameter of the silver ion salt is 50-100 nanometers, the zinc ion salt is zinc oxide, the copper ion salt is cuprous oxide, and the weight ratio of the zinc ion salt to the copper ion salt is 2: 1, and the particle diameter of zinc ion salt and copper ion salt is 3-10 nanometers; the film body consists of 100 weight parts of PE base material and 3.0-5.0 weight parts of antibacterial and mildewproof resin particles; the antibacterial agent comprises 40 parts by weight of n-butyl isothiazolinone, 55 parts by weight of dipropylene glycol and 5 parts by weight of stabilizer.
The packaging bags prepared by the four groups of embodiments and the seven groups of embodiments in proportion are subjected to transverse strength, longitudinal strength, initial and half-year-later antibacterial performance tests, wherein the antibacterial performance tests are antibacterial rate tests, the test strains are respectively escherichia coli and staphylococcus aureus, and the specific results are shown in tables 1 and 2:
table 1 results of the antibacterial property and strength test of the packaging bag made of Escherichia coli
Transverse strength/N Longitudinal strength/N Initial antibacterial rate/%) Half a year later antibacterial ratio/%)
Example one 23.05 22.65 >99.99 >99.04
Example two 22.70 21.69 >99.99 99.08
EXAMPLE III 23.43 23.28 >99.99 >99.02
Example four 23.11 22.26 >99.99 >99.01
Comparative example 1 21.56 21.23 99.18 94.59
Comparative example No. two 21.63 21.19 99.22 95.82
Comparative example No. three 21.49 20.80 98.17 90.05
Comparative example No. four 21.52 20.95 98.29 92.41
Comparative example five 20.31 20.04 99.13 97.60
Comparative example six 22.91 22.54 >99.99 99.07
Comparative example seven 23.01 22.34 >99.99 99.02
Table 2 shows the results of the Staphylococcus aureus antibacterial property test of the packaging bag
Figure BDA0003078868690000191
Figure BDA0003078868690000201
As can be seen from tables 1 and 2, the test results of the comparative examples six and seven are similar to those of the examples, but more raw materials are used in the preparation processes of the comparative examples six and seven, and the products do not obtain more excellent performance, and obviously, the preparation processes of the comparative examples six and seven increase the production cost; the test results of other comparative examples are obviously inferior to those of the examples, so that the packaging bag obtained by adopting the preparation process of the examples has lower production cost, good strength, high-efficiency antibacterial performance and longer antibacterial time.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. 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 preparation process of the antibacterial and mildewproof sanitary packaging bag is characterized by comprising a blown film, wherein three layers of co-extrusion are adopted in the blown film, and antibacterial and mildewproof resin particles are contained in a film body.
2. The manufacturing process of the antibacterial and mildewproof sanitary packaging bag according to claim 1, wherein the outermost layer and/or the inner layer of the film body contains antibacterial and mildewproof resin particles.
3. The manufacturing process of the antibacterial and mildewproof sanitary packaging bag according to claim 1, wherein the antibacterial and mildewproof resin particles are positioned at the outermost layer and the middle layer of the film body, or the antibacterial and mildewproof resin particles are positioned at the middle layer and the inner layer of the film body.
4. The process for preparing antibacterial and mildewproof sanitary packaging bag according to claim 3, wherein the antibacterial and mildewproof resin particles take submicron glass or zirconium phosphate as a carrier, and silver ion salt, zinc ion salt and copper ion salt are attached to the surface or inner layer of the carrier.
5. The process for preparing the antibacterial and mildewproof sanitary packaging bag according to claim 1, wherein the addition amount of the antibacterial and mildewproof resin particles in the three layers of the film body accounts for 3.0 to 5.0 percent of the total addition amount of the film body in percentage by weight.
6. The preparation process of the antibacterial and mildewproof sanitary packaging bag according to claim 1, wherein each layer of the film body comprises the following components in parts by weight:
100 parts of base material
3.0-5.0 parts of antibacterial and mildewproof resin particles.
7. The process for preparing the antibacterial and mildewproof sanitary packaging bag according to claim 6, wherein the base material is one of PE, CPE, PET, MOPP, BOPP, OPP, CPP and SPP.
8. The preparation process of the antibacterial and mildewproof sanitary packaging bag according to claim 1, wherein color ink, gloss oil or matte oil ink is sequentially printed on the surface of the film body, and at least one of the color ink and the gloss oil or the matte oil ink contains an antibacterial agent.
9. The process for preparing an antibacterial and mildewproof sanitary packaging bag according to claim 8, wherein the printing ink contains the antibacterial agent which accounts for 3.0 to 5.0 percent of the total weight of the printing ink.
10. The process for preparing the antibacterial and mildewproof sanitary packaging bag according to any one of claims 6 to 9, wherein the antibacterial agent comprises the following components in parts by weight:
10-40 parts of n-butyl isothiazolinone
40-60 parts of dipropylene glycol
1.0-5.0 parts of stabilizer.
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