CN108839361A - A kind of plastic packaging film and preparation method of the selective absorption ethylene of containing diatomite - Google Patents
A kind of plastic packaging film and preparation method of the selective absorption ethylene of containing diatomite Download PDFInfo
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- CN108839361A CN108839361A CN201810493767.0A CN201810493767A CN108839361A CN 108839361 A CN108839361 A CN 108839361A CN 201810493767 A CN201810493767 A CN 201810493767A CN 108839361 A CN108839361 A CN 108839361A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D7/00—Producing flat articles, e.g. films or sheets
- B29D7/01—Films or sheets
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- 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
- C08J2323/10—Homopolymers or copolymers of propene
- C08J2323/12—Polypropene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2427/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
- C08J2427/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
- C08J2427/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08J2427/06—Homopolymers or copolymers of vinyl chloride
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2433/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
- C08J2433/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2467/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2467/04—Polyesters derived from hydroxy carboxylic acids, e.g. lactones
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/04—Ingredients characterised by their shape and organic or inorganic ingredients
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/16—Halogen-containing compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/22—Expanded, porous or hollow particles
- C08K7/24—Expanded, porous or hollow particles inorganic
- C08K7/26—Silicon- containing compounds
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Abstract
The invention discloses the selective absorption vinyl plastics packaging films and preparation method of a kind of containing diatomite.The plastic packaging film is made by following steps：A, stannous chloride dispersion liquid sprayed deposit is carried on diatomite, is added in latex solution after being mixed with olivine powder, the modification infusorial earth of networking wrapping layer protection is made；B, modification infusorial earth is mixed with matrix resin, absorption layer film is made in casting film-forming；C, shakeproof layer, absorption layer film, the PET base material layer bonding of successively foaming are compound, and the plastic packaging film of selective absorption ethylene is made.The method has the advantages that：The present invention has the modification infusorial earth of stannous chloride as ethene adsorbent by load evenly dispersed in compound package material, it largely can adsorb and fix ethylene, extend the shelf-life of packaging material, it is very suitable for the fresh-keeping of fruit, smaller to the Effect on Mechanical Properties of packaging material simultaneously, service performance is good.
Description
Technical field
The present invention relates to packaging film fields, and in particular to the packaging film of selective absorption ethylene contains more particularly, to one kind
The plastic packaging film and preparation method of the selective absorption ethylene of diatomite.
Background technique
With the development of economy, improvement of living standard, the dietetic life of people is by past unification mistake simply having adequate food and clothing
Cross diversified auxotype till now.The demand of fruit is increasing, and the requirement to its freshness is also higher and higher.Due to
Fresh fruit picking after continue to breathe, and breathe simultaneously with metabolism, moisture evaporation and ethylene synthesis, promote fruits and vegetables into
One step is mature；This storage condition also makes bacterium be easy to breed, and breeds rapidly, and fruit is caused to rot.Ethylene gas is to plant
The hormone of object growth.Although ethylene can promote plant growth and fruit maturation, it is to cause fruits and vegetables easy
The main reason for rotten.Ethylene induces the aging of fruits and vegetables, reduces its shelf-life, drops its vision and organoleptic quality greatly
It is low.
The method for eliminating ethylene at present, which has, to be added potassium permanganate class oxidant pack, molecular sieve or activated carbon adsorbent is added
Etc. means.The ethylene absorbents such as potassium permanganate can accumulate in packaging bag to avoid ethylene, but potassium permanganate is easily dissolved ring
Moisture in border and cause fruit to be colored, and potassium permanganate is a kind of chemicals, must not contact food.Also there is report in the country
Road is clipped in corrugated case or paper pulp molding package box using molecular sieve or activated carbon as ethene adsorbent, influences whether corrugation
The intensity of carton, ethylene absorption efficiency are relatively low.Therefore, the packaging material of novel ethylene adsorption is studied increasingly by weight
Depending on.
Number of patent application 201710750677.0 discloses a kind of buffering packing film with ethylene absorption function, comprising thin
Membrane body, independent air bubble and ethylene absorption package.It is characterized in that：Film bulk is double-layer structure, and independent air bubble is in film
It is formed in this interlayer body, ethylene absorption package is located in independent air bubble according to certain arrangement mode.The beneficial effect of the invention
Fruit is：Innovative ethene adsorbent is made small package, and pre-buried to be filled in duplicature interlayer, membrane body is using high
Breathable films facilitate ethylene through and by ethylene absorption and wrap up absorption.It is pre-buried by the way of 5 points of arrangements in unit area,
Package distribution can be made regular, more completely absorb ethylene.In addition, independent air bubble in membrane body interlayer on the one hand can be with
Pre-buried absorption package, is on the other hand also beneficial to antidetonation.
Number of patent application 201310071444.X discloses the fruit and vegetable fresh-keeping agent pack and packaging film of a kind of controlled release
Production method belongs to food and postharvest technology of fruits and vegetables field, and potassium sorbate is dissolved in solvent and obtains mixing antistaling agent solution, will be mixed
It closes antistaling agent solution absorption and carries out package encapsulation in the carrier of expanded vermiculite, then with modified polyolefine material, solvent is second
Alcohol, the ethyl alcohol of acetaldehyde or arbitrary proportion, acetaldehyde mixed liquor, the dosage of potassium sorbate are the 0.5 ~ 3% of solvent quality.Modified polyolefin
Hydrocarbon material after being blended with the amorphous substance of 2 ~ 15wt%SBS or 5 ~ 50wt%, is passed through using LDPE, LLDPE, CPP as matrix resin
The film that blow molding or coextrusion are formed, amorphous substance are styrene-ethylene copolymers, styrene-butylene polymer or SEBS
One or more of Deng.The controlled release antistaling agent and its packaging of the invention, can be used for granulated sugar tangerine, grape, strawberry and holy girl
The long acting fresh-keeping of the fruits and vegetables such as fruit.
Number of patent application 201010522442.4 discloses the fruit-preserving green packing material with ethylene adsorption function
And preparation method thereof, belong to packaging material field.Material include 100 ~ 90 mass fraction polyethylene or acrylic resin and 0.5 ~
The al silicate molecular sieve that 10 mass fraction granularities are 5 ~ 100 microns, silica alumina ratio is 5 ~ 100.Preparation method includes preparing silicon first
Then sour aluminum molecular screen will be blow molded into film after al silicate molecular sieve and polyethylene or acrylic resin melt blending.It should
The packaging material ethylene absorption rate of invention reaches 0.25~0.43ml/daym2, 1300~4600ml/ of OTR oxygen transmission rate
day·m2；It can make the shelf life extension 25~125% of banana, weightlessness reduces 50% or more.
Number of patent application 201710903104.7 discloses a kind of green vegetables transport case based on ethylene absorption technology, including watt
Stupefied carton separates cardboard, ethylene absorption packet.Specially：Corrugated case by back side panel, front side board, right end plate, left side plate, flap,
Bottom plate, cover board, manufacturer's connector, tongue are constituted, and material is a kind of stupefied corrugated board of C, and corrugated case uses self-locking bear building-up
Structure, ease of assembly and use.Corrugated case is built-in with ethylene absorption packet, and the ethylene gas caning absorb in corrugated case prevents blueness
Dish turns yellow and nitrite accumulation.Separating cardboard can be separated green vegetables by layer, and separation paperboard surface, which is covered with PE film, can prevent moisture
It is lost, paperboard surface is evenly distributed with venthole, is conducive to the flowing of ethylene gas and is adsorbed.
It can be seen that it is poor to the adsorption effect of ethylene for the packaging material of fruits and vegetables in the prior art, cause fruits and vegetables easily to decline
It is old rotten, and the existing method security that potassium permanganate class oxidant pack is added is poor, and molecular sieve or active carbon adsorption is added
The problems such as means of agent easily influence the mechanical property of packaging material, and then not good enough there are service performance.
Summary of the invention
Effectively to solve above-mentioned technical problem, the invention proposes a kind of plastics of the selective absorption ethylene of containing diatomite
Packaging film and preparation method, can effective ethylene adsorption, be conducive to preserving fruit and vegetable utilizing, and to the Effect on Mechanical Properties of packaging material compared with
Small, service performance is good.
The specific technical solution of the present invention is as follows：
A kind of preparation method of the plastic packaging film of the selective absorption ethylene of containing diatomite, stating plastic packaging film is by chloride containing
Cuprous and olivine powder modification infusorial earth and matrix resin casting film-forming, and it is multiple with foaming shakeproof layer, PET base material layer bonding
It closes and is made, specific preparation step is：
A, stannous chloride is added to the water and dispersion liquid is made, be securely carried on by sprayed deposit in the hole of diatomite, then
It mixes, and is added in latex solution with olivine powder, stirred evenly, is freeze-dried, the modification of networking wrapping layer protection is made
Diatomite；
B, modification infusorial earth made from step a is mixed with adsorption layer matrix resin, absorption is made in heating melting and casting film-forming
Layer film；
C, shakeproof layer, porous ultrafiltration membrane, absorption layer film, the PET base material layer bonding of successively foaming from below to up are compound, and choosing is made
The plastic packaging film of selecting property ethylene adsorption.
Preferably, in the step a, latex solution is the polyacrylic acid resin emulsion that solid content is 25wt%.
Preferably, in the step a, 6 ~ 10 parts by weight of stannous chloride, 20 ~ 30 parts by weight of diatomite, olivine powder 10 ~
15 parts by weight, 45 ~ 64 parts by weight of latex solution.
Preferably, in the step a, the cryogenic temperature of freeze-drying is -15 ~ -5 DEG C.
Preferably, in the step b, adsorption layer matrix resin is one of polypropylene, polyvinyl chloride, polylactic acid.
Preferably, in the step b, 10 ~ 30 parts by weight of modification infusorial earth, 70 ~ 90 parts by weight of adsorption layer matrix resin.
Preferably, in the step c, bonding compound binder is amino resins binder.
Preferably, the aperture of the porous ultrafiltration membrane is 0.5nm.
The minerals that diatomite is naturally occurring, mainly by the diatom in ancient times and the remains of other unicellular tiny organisms
Deposit siliceous fraction composition, by being processed into product.There are many holes in inside, and light and soft, porosity is reachable
90% or so, it is easily ground into a powder, therefore there is very strong adsorption capacity, has good filterability and chemical stability, in this hair
The gases such as the ethylene that fruits and vegetables distribute can quickly and be largely adsorbed in bright.And being carried on the stannous chloride of diatomite and ethylene can occur
Reaction is generated into C2H2CuCl realizes absorption and fixation to ethylene, and small toxicity itself, the safety in vegetable and fruit packaging
It is good.
Above content of the present invention also proposes a kind of plastic packaging film of the selective absorption ethylene of containing diatomite, utilizes chlorination
Cuprous to adsorb and fix ethylene, the porous structure of diatomite is conducive to adsorbed gas, by uniform in compound package material
Dispersion load has the modification infusorial earth of stannous chloride as ethene adsorbent, while compound porous ultrafiltration membrane has ethylene molecule
Have compared with high-permeability, adsorption layer can largely adsorb the ethylene through ultrafiltration membrane, extend the shelf-life of packaging material, very applicable
In the fresh-keeping of fruit；Modification infusorial earth particle is uniformly dispersed in adsorption layer resin simultaneously, to the mechanical property shadow of packaging material
Sound is smaller.
Beneficial effects of the present invention are：
1. proposing the plastic packaging film of the selective absorption ethylene using tripolite loading stannous chloride preparation containing diatomite
Method.
2. the present invention has the modification infusorial earth of stannous chloride as second by load evenly dispersed in compound package material
Alkene adsorbent has compared with high-permeability ethylene molecule using porous ultrafiltration membrane, largely can adsorb and fix ethylene, extend packaging
The shelf-life of material is very suitable for the fresh-keeping of fruit.
3. in present invention preparation by modification infusorial earth even particulate dispersion in adsorption layer resin, to the mechanics of packaging material
Performance influence is smaller, and service performance is good.
Specific embodiment
In the following, the present invention will be further described in detail by way of specific embodiments, but this should not be interpreted as to the present invention
Range be only limitted to example below.Without departing from the idea of the above method of the present invention, according to ordinary skill
The various replacements or change that knowledge and customary means are made, should be included in the scope of the present invention.
Embodiment 1
A, stannous chloride is added to the water and dispersion liquid is made, be securely carried on by sprayed deposit in the hole of diatomite, then
It mixes, and is added in latex solution with olivine powder, stirred evenly, is freeze-dried, the modification of networking wrapping layer protection is made
Diatomite；
B, modification infusorial earth made from step a is mixed with adsorption layer matrix resin, absorption is made in heating melting and casting film-forming
Layer film；
C, shakeproof layer, porous ultrafiltration membrane, absorption layer film, the PET base material layer bonding of successively foaming from below to up are compound, and choosing is made
The plastic packaging film of selecting property ethylene adsorption.
In step a, latex solution is the polyacrylic acid resin emulsion that solid content is 25wt%；In step b, adsorption layer matrix
Resin is polypropylene；Bonding compound binder is amino resins binder；
In step a, 7 parts by weight of stannous chloride, 26 parts by weight of diatomite, 13 parts by weight of olivine powder, 54 parts by weight of latex solution；
In step b, 22 parts by weight of modification infusorial earth, 78 parts by weight of adsorption layer matrix resin；
In step a, the cryogenic temperature of freeze-drying is -11 DEG C；In step c, foaming shakeproof layer is the poly- second of foaming with a thickness of 1mm
Alkene；Porous ultrafiltration membrane is the polycarbonate membrane of thickness 0.01mm, and the aperture of porous ultrafiltration membrane is 0.5nm；Adsorption layer film thickness
For 0.02mm；PET base material layer is with a thickness of 0.008mm.
Embodiment 2
A, stannous chloride is added to the water and dispersion liquid is made, be securely carried on by sprayed deposit in the hole of diatomite, then
It mixes, and is added in latex solution with olivine powder, stirred evenly, is freeze-dried, the modification of networking wrapping layer protection is made
Diatomite；
B, modification infusorial earth made from step a is mixed with adsorption layer matrix resin, absorption is made in heating melting and casting film-forming
Layer film；
C, shakeproof layer, porous ultrafiltration membrane, absorption layer film, the PET base material layer bonding of successively foaming from below to up are compound, and choosing is made
The plastic packaging film of selecting property ethylene adsorption.
In step a, latex solution is the polyacrylic acid resin emulsion that solid content is 25wt%；In step b, adsorption layer matrix
Resin is polyvinyl chloride；Bonding compound binder is amino resins binder；
In step a, 7 parts by weight of stannous chloride, 22 parts by weight of diatomite, 12 parts by weight of olivine powder, 59 parts by weight of latex solution；
In step b, 15 parts by weight of modification infusorial earth, 85 parts by weight of adsorption layer matrix resin；
In step a, the cryogenic temperature of freeze-drying is -12 DEG C；In step c, foaming shakeproof layer is the poly- second of foaming with a thickness of 1mm
Alkene；Porous ultrafiltration membrane is the polycarbonate membrane of thickness 0.01mm, and the aperture of porous ultrafiltration membrane is 0.5nm；Adsorption layer film thickness
For 0.02mm；PET base material layer is with a thickness of 0.008mm.
Embodiment 3
A, stannous chloride is added to the water and dispersion liquid is made, be securely carried on by sprayed deposit in the hole of diatomite, then
It mixes, and is added in latex solution with olivine powder, stirred evenly, is freeze-dried, the modification of networking wrapping layer protection is made
Diatomite；
B, modification infusorial earth made from step a is mixed with adsorption layer matrix resin, absorption is made in heating melting and casting film-forming
Layer film；
C, shakeproof layer, porous ultrafiltration membrane, absorption layer film, the PET base material layer bonding of successively foaming from below to up are compound, and choosing is made
The plastic packaging film of selecting property ethylene adsorption.
In step a, latex solution is the polyacrylic acid resin emulsion that solid content is 25wt%；In step b, adsorption layer matrix
Resin is polylactic acid；Bonding compound binder is amino resins binder；
In step a, 9 parts by weight of stannous chloride, 28 parts by weight of diatomite, 14 parts by weight of olivine powder, 49 parts by weight of latex solution；
In step b, 25 parts by weight of modification infusorial earth, 75 parts by weight of adsorption layer matrix resin；
In step a, the cryogenic temperature of freeze-drying is -8 DEG C；In step c, foaming shakeproof layer is the poly- second of foaming with a thickness of 1mm
Alkene；Porous ultrafiltration membrane is the polycarbonate membrane of thickness 0.01mm, and the aperture of porous ultrafiltration membrane is 0.5nm；Adsorption layer film thickness
For 0.02mm；PET base material layer is with a thickness of 0.008mm.
Embodiment 4
A, stannous chloride is added to the water and dispersion liquid is made, be securely carried on by sprayed deposit in the hole of diatomite, then
It mixes, and is added in latex solution with olivine powder, stirred evenly, is freeze-dried, the modification of networking wrapping layer protection is made
Diatomite；
B, modification infusorial earth made from step a is mixed with adsorption layer matrix resin, absorption is made in heating melting and casting film-forming
Layer film；
C, shakeproof layer, porous ultrafiltration membrane, absorption layer film, the PET base material layer bonding of successively foaming from below to up are compound, and choosing is made
The plastic packaging film of selecting property ethylene adsorption.
In step a, latex solution is the polyacrylic acid resin emulsion that solid content is 25wt%；In step b, adsorption layer matrix
Resin is polypropylene；Bonding compound binder is amino resins binder；
In step a, 6 parts by weight of stannous chloride, 20 parts by weight of diatomite, 10 parts by weight of olivine powder, 64 parts by weight of latex solution；
In step b, 10 parts by weight of modification infusorial earth, 90 parts by weight of adsorption layer matrix resin；
In step a, the cryogenic temperature of freeze-drying is -15 DEG C；In step c, foaming shakeproof layer is the poly- second of foaming with a thickness of 1mm
Alkene；Porous ultrafiltration membrane is the polycarbonate membrane of thickness 0.01mm, and the aperture of porous ultrafiltration membrane is 0.5nm；Adsorption layer film thickness
For 0.02mm；PET base material layer is with a thickness of 0.008mm.
Embodiment 5
A, stannous chloride is added to the water and dispersion liquid is made, be securely carried on by sprayed deposit in the hole of diatomite, then
It mixes, and is added in latex solution with olivine powder, stirred evenly, is freeze-dried, the modification of networking wrapping layer protection is made
Diatomite；
B, modification infusorial earth made from step a is mixed with adsorption layer matrix resin, absorption is made in heating melting and casting film-forming
Layer film；
C, shakeproof layer, porous ultrafiltration membrane, absorption layer film, the PET base material layer bonding of successively foaming from below to up are compound, and choosing is made
The plastic packaging film of selecting property ethylene adsorption.
In step a, latex solution is the polyacrylic acid resin emulsion that solid content is 25wt%；In step b, adsorption layer matrix
Resin is polyvinyl chloride；Bonding compound binder is amino resins binder；
In step a, 10 parts by weight of stannous chloride, 30 parts by weight of diatomite, 15 parts by weight of olivine powder, 45 weight of latex solution
Part；In step b, 30 parts by weight of modification infusorial earth, 70 parts by weight of adsorption layer matrix resin；
In step a, the cryogenic temperature of freeze-drying is -5 DEG C；In step c, foaming shakeproof layer is the poly- second of foaming with a thickness of 1mm
Alkene；Porous ultrafiltration membrane is the polycarbonate membrane of thickness 0.01mm, and the aperture of porous ultrafiltration membrane is 0.5nm；Adsorption layer film thickness
For 0.02mm；PET base material layer is with a thickness of 0.008mm.
Comparative example 1
A, diatomite is mixed with olivine powder, and be added in latex solution, stirred evenly, is freeze-dried, modified diatom is made
Soil；
B, modification infusorial earth made from step a is mixed with adsorption layer matrix resin, absorption is made in heating melting and casting film-forming
Layer film；
C, shakeproof layer, absorption layer film, the PET base material layer bonding of successively foaming from below to up are compound, and selective absorption second is made
The plastic packaging film of alkene.
In step a, latex solution is polyacrylic acid resin emulsion；In step b, adsorption layer matrix resin is polypropylene；It is viscous
Tying compound binder is amino resins binder；
In step a, 26 parts by weight of diatomite, 13 parts by weight of olivine powder, 61 parts by weight of latex solution；In step b, modified diatom
Native 22 parts by weight, 78 parts by weight of adsorption layer matrix resin；
In step a, the cryogenic temperature of freeze-drying is -11 DEG C；In step c, foaming shakeproof layer is the poly- second of foaming with a thickness of 1mm
Alkene；Adsorption layer film thickness is 0.02mm；PET base material layer is with a thickness of 0.008mm.
Comparative example 2
A, stannous chloride is added to the water and dispersion liquid is made, be securely carried on by sprayed deposit in the hole of diatomite, then
It mixes, and is added in latex solution with olivine powder, stirred evenly, is freeze-dried, the modification of networking wrapping layer protection is made
Diatomite；
B, modification infusorial earth made from step a is mixed with adsorption layer matrix resin, absorption is made in heating melting and casting film-forming
Layer film；
C, shakeproof layer, absorption layer film, the PET base material layer bonding of successively foaming from below to up are compound, and selective absorption second is made
The plastic packaging film of alkene.
In step a, latex solution is polyacrylic acid resin emulsion；In step b, adsorption layer matrix resin is polypropylene；It is viscous
Tying compound binder is amino resins binder；
In step a, 7 parts by weight of stannous chloride, 26 parts by weight of diatomite, 13 parts by weight of olivine powder, 54 parts by weight of latex solution；
In step b, 22 parts by weight of modification infusorial earth, 78 parts by weight of adsorption layer matrix resin；
In step a, the cryogenic temperature of freeze-drying is -11 DEG C.The shakeproof layer that foams is the polyethylene foamed with a thickness of 1mm；Absorption
Layer film is with a thickness of 0.02mm；PET base material layer is with a thickness of 0.008mm.
Plastic packaging film made from above-described embodiment 1 ~ 5 and comparative example 1 ~ 2 tests its ethylene concentration, the water of packing fruits and vegetables
The distribution characteristics of vapor concentration, rudimentary esters concentration and modification infusorial earth particle, method or the condition for testing characterization are as follows：
Gas concentration：5d is placed at being 20 DEG C in temperature by 1kg Peach fruits, then sealing is packed into plastics package produced by the present invention
In film, using the ethylene initial concentration in EST-10 ethylene concentration detector measurement packaging film, using 177U vapor detector
Water vapor concentration is measured, using the rudimentary esters concentration of Macrogol 6000 column sample by direct sample introduction, is continued under the same conditions
Place, respectively in 5d, 10d, 15d in replication packaging film above-mentioned each gas concentration.
The results are shown in Table 1.
Table 1：
Claims (9)
1. a kind of preparation method of the plastic packaging film of the selective absorption ethylene of containing diatomite, it is characterised in that：The plastics
Packaging film be by chloride containing is cuprous and the modification infusorial earth and matrix resin casting film-forming of olivine powder, and it is shockproof with foaming
Layer, PET base material layer bonding are compound and obtained, and specific preparation step is：
A, stannous chloride is added to the water and dispersion liquid is made, be securely carried on by sprayed deposit in the hole of diatomite, then
It mixes, and is added in latex solution with olivine powder, stirred evenly, is freeze-dried, the modification of networking wrapping layer protection is made
Diatomite；
B, modification infusorial earth made from step a is mixed with adsorption layer matrix resin, absorption is made in heating melting and casting film-forming
Layer film；
C, shakeproof layer, porous ultrafiltration membrane, absorption layer film, the PET base material layer bonding of successively foaming from below to up are compound, and choosing is made
The plastic packaging film of selecting property ethylene adsorption.
2. the preparation method of the plastic packaging film of the selective absorption ethylene of a kind of containing diatomite according to claim 1,
It is characterized in that：In the step a, latex solution is the polyacrylic acid resin emulsion that solid content is 25wt%.
3. the preparation method of the plastic packaging film of the selective absorption ethylene of a kind of containing diatomite according to claim 1,
It is characterized in that：In the step a, 6 ~ 10 parts by weight of stannous chloride, 20 ~ 30 parts by weight of diatomite, 10 ~ 15 weight of olivine powder
Part, 45 ~ 64 parts by weight of latex solution.
4. the preparation method of the plastic packaging film of the selective absorption ethylene of a kind of containing diatomite according to claim 1,
It is characterized in that：In the step a, the cryogenic temperature of freeze-drying is -15 ~ -5 DEG C.
5. the preparation method of the plastic packaging film of the selective absorption ethylene of a kind of containing diatomite according to claim 1,
It is characterized in that：In the step b, adsorption layer matrix resin is one of polypropylene, polyvinyl chloride, polylactic acid.
6. the preparation method of the plastic packaging film of the selective absorption ethylene of a kind of containing diatomite according to claim 1,
It is characterized in that：In the step b, 10 ~ 30 parts by weight of modification infusorial earth, 70 ~ 90 parts by weight of adsorption layer matrix resin.
7. the preparation method of the plastic packaging film of the selective absorption ethylene of a kind of containing diatomite according to claim 1,
It is characterized in that：In the step c, bonding compound binder is amino resins binder.
8. the preparation method of the plastic packaging film of the selective absorption ethylene of a kind of containing diatomite according to claim 1,
It is characterized in that：The aperture of the porous ultrafiltration membrane is 0.5nm.
9. a kind of plastic bag of the selective absorption ethylene for containing diatomite that any one of claim 1 ~ 8 the method is prepared
Fill film.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115260635A (en) * | 2022-08-24 | 2022-11-01 | 颜伟德 | Waterproof breathable antibacterial DDS plastic film and processing technology thereof |
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2018
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115260635A (en) * | 2022-08-24 | 2022-11-01 | 颜伟德 | Waterproof breathable antibacterial DDS plastic film and processing technology thereof |
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