CN104725709A - Degradable fresh-keeping packaging material for vegetables and fruits and method for manufacturing degradable fresh-keeping packaging material - Google Patents
Degradable fresh-keeping packaging material for vegetables and fruits and method for manufacturing degradable fresh-keeping packaging material Download PDFInfo
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- CN104725709A CN104725709A CN201510175193.9A CN201510175193A CN104725709A CN 104725709 A CN104725709 A CN 104725709A CN 201510175193 A CN201510175193 A CN 201510175193A CN 104725709 A CN104725709 A CN 104725709A
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- packaging material
- degradable
- vegetables
- keeping packaging
- fresh
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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
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/06—Polyethene
-
- 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
-
- 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
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
-
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/003—Additives being defined by their diameter
-
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/06—Biodegradable
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/066—LDPE (radical process)
Abstract
The invention discloses a degradable fresh-keeping packaging material for vegetables and fruits. The degradable fresh-keeping packaging material comprises, by weight, 20-30 parts of low-density polyethylene, 5-10 parts of ethylene-vinyl acetate copolymers (EVA), 0.1-0.5 part of bacteriostatic agents, 20-30 parts of inorganic fillers, 10-15 parts of organic fillers, 3-5 parts of bacteriostatic auxiliaries and 3-5 parts of coupling agents. A method for manufacturing the degradable fresh-keeping packaging material includes uniformly mixing raw materials with one another in high-speed mixers for the mixing time of 10-20min at the rotational speeds of 300-350r/min to obtain premixed materials; kneading the premixed materials in double-screw extruders for the kneading time of 15-18min and extruding the premixed materials to obtain the degradable fresh-keeping packaging material. The rotational speeds of screws of the double-screw extruders are 320-350r/min, and the temperatures of the screws of the double-screw extruders are 165-175 DEG C. The degradable fresh-keeping packaging material and the method have the advantages that the packaging materials has an excellent fresh-keeping function and is excellent in breathability and bacteriostatic property when used for packaging vegetable and fruit products and is environmental friendly.
Description
Technical field
The present invention relates to wrapping material preparing technical field, especially a kind of degradable vegetables and fruits wrapping material and preparation method with fresh-keeping function.
Background technology
Fresh vegetables and fruit are the fresh goods that water content is very high, still proceed the vital movements such as rising and breathing, if do not have suitable terms of packing, be easy to dehydration atrophy or rot in the process of circulation after gathering.Vegetables and fruits preservation technique can not only reduce circulation product loss, greatly can also increase the added value of agricultural byproducts, and packaging and other various preservation technique improve the very important means of agricultural byproducts economic benefit.
Along with the development of Urbanization in China, the supply of big city resident's vegetable and fruit more and more depends on other places, can be increasing to the demand of Fresh-Keeping Packaging Materials, also more and more higher to the requirement of vegetable and fruit packaging material.Because people will be detrimental to health and the worry of the problem such as contaminate environment to life-time service chemical bactericide, and plastic film packaging demand is increased sharply increasing the weight of of " white pollution " problem brought, people have turned to above safety non-toxic and environmental protection to the function of wrapping material, and degradable novel Freshkeeping Packaging is the new focus of current international vegetables and fruits packaging.This wrapping material serve anti-corrosive fresh-keeping and the multiple effect such as degradable is free from environmental pollution, easy to use, are specially adapted to the packaging of fresh fruit of vegetables product and part cooked product, are with a wide range of applications in fresh-keeping foodstuff packaging from now on.Plastic base wrapping material have the problems such as non-degradable, non-renewable, poor air permeability, can not meet the requirement of preserving fruit and vegetable utilizing and environment protection very well.
Summary of the invention
Not enough for prior art, the invention provides a kind of degradable vegetables and fruits fresh-keeping packaging material and preparation method, gained wrapping material have good fresh-keeping function, good permeability when packing veterinary antibiotics product, and wrapping material environmental protection.
The technical scheme that the present invention solves the problems of the technologies described above employing is: a kind of degradable vegetables and fruits fresh-keeping packaging material, comprises the raw material of following weight part: Low Density Polyethylene 20 ~ 30, ethylene-vinyl acetate copolymer EVA 5 ~ 10, fungistat 0.1 ~ 0.5, inorganic filler 20 ~ 30, organic weighting material 10 ~ 15, antibacterial auxiliary agent 3 ~ 5, coupling agent 3 ~ 5.
As preferably, described fungistat is one or both in Sorbic Acid, tea-polyphenol.
As preferably, described antibacterial auxiliary agent is nano titanium oxide.
As preferably, described coupling agent is coupling agent 570 or coupling agent 900.
As preferably, described inorganic filler is one or more in calcium carbonate, talcum powder, polynite, the order number >100 of described inorganic filler.
As preferably, described organic weighting material is one or more in the vegetable fibres such as lignin fibre, cotton fibriia, bamboo fibers, coconut fiber, the average length L EssT.LTssT.LT100 μm of described vegetable fibre.
Further, the preparation method of described a kind of degradable vegetables and fruits fresh-keeping packaging material, comprises the following steps: take desired raw material by weight; Raw material is placed in high-speed mixer and mixing even, mixing time 10 ~ 20min, rotating speed 300 ~ 350r/min, obtains Preblend; Preblend is placed in twin screw extruder to mediate and both extrude, kneading time 15 ~ 18min, screw speed 320 ~ 350r/min, extruder temperature 165 ~ 175 DEG C.
A kind of degradable vegetables and fruits fresh-keeping packaging material of the present invention has following performance: 1. freshness: organic weighting material of certain specification and the interpolation of inorganic filler can make that wrapping material permeability is good, controlled atmosphere index is stablized;
2. biocidal property: Sorbic Acid and tea-polyphenol are the asepsis environment-protecting additives with good antibacterial, bacteriostasis property; Nano titanium oxide is the good antibacterial raw material of a kind of security and persistence, as photocatalytic semiconductor inorganic antiseptic, has broad-spectrum antimicrobial function, can effectively suppress and killing microorganisms, and both synergies, make wrapping material have excellent bacteriostasis property;
3. the feature of environmental protection: inorganic filler and organic weighting material are renewable resources; lower cost for material; with Low Density Polyethylene and EVA compound; while improving bio-degradable plastics performance; the cost of Biodegradable material can also be reduced, can disintegrate after discarded, can not to environment; contribute to protection of the environment, realize the coordinated development of man and nature.
Embodiment
Embodiment 1: a kind of degradable vegetables and fruits fresh-keeping packaging material, comprises the raw material of following weight part: Low Density Polyethylene 20, ethylene-vinyl acetate copolymer EVA 5, fungistat 0.1, inorganic filler 20, organic weighting material 10, antibacterial auxiliary agent 3, coupling agent 3.
In the present embodiment, described fungistat is Sorbic Acid; Described antibacterial auxiliary agent is nano titanium oxide; Described coupling agent is coupling agent 570; Described inorganic filler is the calcium carbonate of order number >100; Described organic weighting material is the lignin fibre of average length L EssT.LTssT.LT100 μm.
The preparation method of a kind of degradable vegetables and fruits fresh-keeping packaging material of the present embodiment comprises the following steps: take desired raw material by weight; Raw material is placed in high-speed mixer and mixing even, mixing time 10min, rotating speed 350r/min, obtains Preblend; Preblend is placed in twin screw extruder to mediate and both extrude, kneading time 18min, screw speed 320r/min, extruder temperature 165 DEG C.
Embodiment 2: a kind of degradable vegetables and fruits fresh-keeping packaging material, comprises the raw material of following weight part: Low Density Polyethylene 30, ethylene-vinyl acetate copolymer EVA 10, fungistat 0.5, inorganic filler 30, organic weighting material 15, antibacterial auxiliary agent 5, coupling agent 5.
In the present embodiment, described fungistat is tea-polyphenol; Described antibacterial auxiliary agent is nano titanium oxide; Described coupling agent is coupling agent 900; Described inorganic filler is the talcum powder of order number >100; Described organic weighting material is the bamboo fibers of average length L EssT.LTssT.LT100 μm.
The preparation method of a kind of degradable vegetables and fruits fresh-keeping packaging material of the present embodiment comprises the following steps: take desired raw material by weight; Raw material is placed in high-speed mixer and mixing even, mixing time 20min, rotating speed 300r/min, obtains Preblend; Preblend is placed in twin screw extruder to mediate and both extrude, kneading time 15min, screw speed 350r/min, extruder temperature 165 DEG C.
Embodiment 3: a kind of degradable vegetables and fruits fresh-keeping packaging material, comprises the raw material of following weight part: Low Density Polyethylene 25, ethylene-vinyl acetate copolymer EVA 8, fungistat 0.3, inorganic filler 25, organic weighting material 12, antibacterial auxiliary agent 4, coupling agent 4.
In the present embodiment, described fungistat is the mixture in Sorbic Acid, tea-polyphenol; Described antibacterial auxiliary agent is nano titanium oxide; Described coupling agent is coupling agent 570; Described inorganic filler is the polynite of order number >100; Described organic weighting material is cotton fibriia, the coconut fiber of average length L EssT.LTssT.LT100 μm.
The preparation method of a kind of degradable vegetables and fruits fresh-keeping packaging material of the present embodiment comprises the following steps: take desired raw material by weight; Raw material is placed in high-speed mixer and mixing even, mixing time 15min, rotating speed 325r/min, obtains Preblend; Preblend is placed in twin screw extruder to mediate and both extrude, kneading time 16min, screw speed 340r/min, extruder temperature 170 DEG C.
Embodiment 4: a kind of degradable vegetables and fruits fresh-keeping packaging material, comprises the raw material of following weight part: Low Density Polyethylene 20, ethylene-vinyl acetate copolymer EVA 10, fungistat 0.1, inorganic filler 30, organic weighting material 10, antibacterial auxiliary agent 5, coupling agent 3.
In the present embodiment, described fungistat is the mixture in Sorbic Acid, tea-polyphenol; Described antibacterial auxiliary agent is nano titanium oxide; Described coupling agent is coupling agent 900; Described inorganic filler is the mixture in the calcium carbonate of order number >100, talcum powder, polynite; Described organic weighting material be average length L EssT.LTssT.LT100 μm lignin fibre, cotton fibriia, bamboo fibers, coconut fiber mixture.
The preparation method of a kind of degradable vegetables and fruits fresh-keeping packaging material of the present embodiment comprises the following steps: take desired raw material by weight; Raw material is placed in high-speed mixer and mixing even, mixing time 17min, rotating speed 310r/min, obtains Preblend; Preblend is placed in twin screw extruder to mediate and both extrude, kneading time 16min, screw speed 335r/min, extruder temperature 168 DEG C.
Embodiment 5: a kind of degradable vegetables and fruits fresh-keeping packaging material, comprises the raw material of following weight part: Low Density Polyethylene 22, ethylene-vinyl acetate copolymer EVA 9, fungistat 0.4, inorganic filler 27, organic weighting material 11, antibacterial auxiliary agent 4, coupling agent 5.
In the present embodiment, described fungistat is Sorbic Acid; Described antibacterial auxiliary agent is nano titanium oxide; Described coupling agent is coupling agent 570; Described inorganic filler is the mixture in the calcium carbonate of order number >100, polynite; Described organic weighting material is the coconut fiber of average length L EssT.LTssT.LT100 μm.
The preparation method of a kind of degradable vegetables and fruits fresh-keeping packaging material of the present embodiment comprises the following steps: take desired raw material by weight; Raw material is placed in high-speed mixer and mixing even, mixing time 15min, rotating speed 300r/min, obtains Preblend; Preblend is placed in twin screw extruder to mediate and both extrude, kneading time 18min, screw speed 340r/min, extruder temperature 175 DEG C.
Following table is the indices of a kind of degradable vegetables and fruits fresh-keeping packaging material of the present invention
* CO
2, O
2concentration is the fresh-keeping effect experiment of tomato, and test experience condition is 25 DEG C, within 60 days, packs the gas concentration of head space afterwards.
Claims (7)
1. a degradable vegetables and fruits fresh-keeping packaging material, it is characterized in that, comprise the raw material of following weight part: Low Density Polyethylene 20 ~ 30, ethylene-vinyl acetate copolymer EVA 5 ~ 10, fungistat 0.1 ~ 0.5, inorganic filler 20 ~ 30, organic weighting material 10 ~ 15, antibacterial auxiliary agent 3 ~ 5, coupling agent 3 ~ 5.
2. a kind of degradable vegetables and fruits fresh-keeping packaging material according to claim 1, is characterized in that: described fungistat is one or both in Sorbic Acid, tea-polyphenol.
3. a kind of degradable vegetables and fruits fresh-keeping packaging material according to claim 1, is characterized in that: described antibacterial auxiliary agent is nano titanium oxide.
4. a kind of degradable vegetables and fruits fresh-keeping packaging material according to claim 1, is characterized in that: described coupling agent is coupling agent 570 or coupling agent 900.
5. a kind of degradable vegetables and fruits fresh-keeping packaging material according to claim 1, is characterized in that: described inorganic filler is one or more in calcium carbonate, talcum powder, polynite, the order number >100 of described inorganic filler.
6. a kind of degradable vegetables and fruits fresh-keeping packaging material according to claim 1, it is characterized in that: described organic weighting material is one or more in the vegetable fibres such as lignin fibre, cotton fibriia, bamboo fibers, coconut fiber, the average length L EssT.LTssT.LT100 μm of described vegetable fibre.
7. the arbitrary described a kind of degradable vegetables and fruits fresh-keeping packaging material of claim 1 ~ 6, its preparation method comprises the following steps: take desired raw material by weight; Raw material is placed in high-speed mixer and mixing even, mixing time 10 ~ 20min, rotating speed 300 ~ 350r/min, obtains Preblend; Preblend is placed in twin screw extruder to mediate and both extrude, kneading time 15 ~ 18min, screw speed 320 ~ 350r/min, extruder temperature 165 ~ 175 DEG C.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510175193.9A CN104725709A (en) | 2015-04-14 | 2015-04-14 | Degradable fresh-keeping packaging material for vegetables and fruits and method for manufacturing degradable fresh-keeping packaging material |
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|---|---|---|---|
| CN201510175193.9A CN104725709A (en) | 2015-04-14 | 2015-04-14 | Degradable fresh-keeping packaging material for vegetables and fruits and method for manufacturing degradable fresh-keeping packaging material |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106188772A (en) * | 2016-08-09 | 2016-12-07 | 叶剑 | A kind of polyethylene master batch for packaging bag and preparation method thereof |
| CN106349631A (en) * | 2016-11-03 | 2017-01-25 | 金福英 | Anti-flaming degradable nanometer packaging material and preparation method thereof |
| JP2017066259A (en) * | 2015-09-30 | 2017-04-06 | 株式会社ファインテック | Bamboo fiber composite plant-derived resin composition and method for producing the same |
| CN106916365A (en) * | 2017-03-11 | 2017-07-04 | 东莞市开源塑化科技有限公司 | The bamboo fibre film and its manufacture craft of a kind of antimildew and antibacterial for easily tearing |
| CN107177072A (en) * | 2017-05-25 | 2017-09-19 | 句容市兴武包装有限公司 | A kind of preparation method of food oxydating resistance packaging film |
| CN107936363A (en) * | 2017-12-25 | 2018-04-20 | 安徽省临泉县万隆塑料包装有限公司 | A kind of preparation method for the plastic packaging bag of resistance to bacterium |
| CN108129744A (en) * | 2017-12-22 | 2018-06-08 | 桐城市桃花制刷有限公司 | A kind of plastic film for wrapping containing poly- acetimide |
| CN108707272A (en) * | 2018-06-19 | 2018-10-26 | 段玉民 | A kind of anti-fake polybag of degradable polyethylene and preparation method thereof |
| CN109233045A (en) * | 2018-07-25 | 2019-01-18 | 厦门市地隆包装材料有限公司 | A kind of EPE packaging material and preparation method thereof and protective case |
| CN109320948A (en) * | 2018-10-18 | 2019-02-12 | 吴江市英力达塑料包装有限公司 | A kind of preparation method of the degradable plastic package material of environmental protection |
| CN113004602A (en) * | 2021-03-02 | 2021-06-22 | 哈尔滨商业大学 | Pinecone powder filled degradable plastic and preparation method thereof |
-
2015
- 2015-04-14 CN CN201510175193.9A patent/CN104725709A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017066259A (en) * | 2015-09-30 | 2017-04-06 | 株式会社ファインテック | Bamboo fiber composite plant-derived resin composition and method for producing the same |
| CN106188772A (en) * | 2016-08-09 | 2016-12-07 | 叶剑 | A kind of polyethylene master batch for packaging bag and preparation method thereof |
| CN106349631A (en) * | 2016-11-03 | 2017-01-25 | 金福英 | Anti-flaming degradable nanometer packaging material and preparation method thereof |
| CN106916365A (en) * | 2017-03-11 | 2017-07-04 | 东莞市开源塑化科技有限公司 | The bamboo fibre film and its manufacture craft of a kind of antimildew and antibacterial for easily tearing |
| CN107177072A (en) * | 2017-05-25 | 2017-09-19 | 句容市兴武包装有限公司 | A kind of preparation method of food oxydating resistance packaging film |
| CN108129744A (en) * | 2017-12-22 | 2018-06-08 | 桐城市桃花制刷有限公司 | A kind of plastic film for wrapping containing poly- acetimide |
| CN107936363A (en) * | 2017-12-25 | 2018-04-20 | 安徽省临泉县万隆塑料包装有限公司 | A kind of preparation method for the plastic packaging bag of resistance to bacterium |
| CN108707272A (en) * | 2018-06-19 | 2018-10-26 | 段玉民 | A kind of anti-fake polybag of degradable polyethylene and preparation method thereof |
| CN109233045A (en) * | 2018-07-25 | 2019-01-18 | 厦门市地隆包装材料有限公司 | A kind of EPE packaging material and preparation method thereof and protective case |
| CN109320948A (en) * | 2018-10-18 | 2019-02-12 | 吴江市英力达塑料包装有限公司 | A kind of preparation method of the degradable plastic package material of environmental protection |
| CN113004602A (en) * | 2021-03-02 | 2021-06-22 | 哈尔滨商业大学 | Pinecone powder filled degradable plastic and preparation method thereof |
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