CN108342039A - A kind of novel degradable sterilization fresh-keeping film and preparation method thereof - Google Patents
A kind of novel degradable sterilization fresh-keeping film and preparation method thereof Download PDFInfo
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- CN108342039A CN108342039A CN201711407839.7A CN201711407839A CN108342039A CN 108342039 A CN108342039 A CN 108342039A CN 201711407839 A CN201711407839 A CN 201711407839A CN 108342039 A CN108342039 A CN 108342039A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B9/00—Making granules
- B29B9/02—Making granules by dividing preformed material
- B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
-
- 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
-
- 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
- B29L2007/00—Flat articles, e.g. films or sheets
-
- 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
- C08J2300/00—Characterised by the use of unspecified polymers
- C08J2300/16—Biodegradable polymers
-
- 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
- C08J2329/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Derivatives of such polymer
- C08J2329/02—Homopolymers or copolymers of unsaturated alcohols
- C08J2329/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
-
- 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
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—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
- C08J2423/04—Homopolymers or copolymers of ethene
- C08J2423/06—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
- C08K2003/2237—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
- C08K2201/011—Nanostructured additives
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
- C08K5/098—Metal salts of carboxylic acids
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
Abstract
The invention discloses a kind of novel degradable sterilization fresh-keeping films and preparation method thereof.The raw material of the novel degradable sterilization fresh-keeping film includes polyvinyl alcohol (PVA), polyethylene (PE), potassium sorbate, nano-titanium dioxide, lubricant.The preparation method of the novel degradable sterilization fresh-keeping film includes the following steps：(1) raw material is mixed in proportion and is pelletized by double screw extruder；(2) by squeezing out inflation film manufacturing machine film.Preservative film produced by the present invention has preferable moisture retention, sterilization antibacterial functions, can slow down food spoilage corruption, extend fresh keeping time, have degradable function, reduce pollution, is conducive to environmental protection, and simple production process is suitble to industrialized production.
Description
Technical field
The present invention relates to plastic fresh-keeping membrane, specially a kind of novel degradable sterilization fresh-keeping film and preparation method thereof.
Background technology
The preservative film feature convenient, economic, beautiful with it receives the favor of people, and it is daily common to have become people
Food packaging, storage material.Presently commercially available most preservative films are all using ethylene masterbatch as raw material, according to ethylene mother
The variety classes of material, preservative film can be divided into three categories.The first is polyethylene, and this material is mainly used for the packaging of food, I
This film of water fruits and vegetables for buying usually, be included in the semi-finished product of supermarket's buying back all be this material；
Second is polyvinyl chloride, and this material can be used for food packaging, but it has a certain impact to the safety of human body；The
Three kinds are polyvinylidene chloride, are mainly used for the packaging of the products such as some prepared food, ham.Although these preservative films are common, play
Certain preservation, but there are still following shortcomings for these preservative films：
1, existing preservative film is susceptible in use there is water droplet, is easy to accelerate bacteria breed and breeding, lead
Food spoilage is caused, human health is unfavorable for.
2, existing preservative film mostly uses polyethylene, polyvinylidene chloride, polypropylene etc. and is made, cannot by natural degradation,
It pollutes.
Invention content
(1) the technical issues of solving
In view of the deficiencies of the prior art, the present invention provides a kind of novel degradable sterilization fresh-keeping film and preparation method thereof,
Solve the problems, such as that most preservative films are unable to antibiotic and sterilizing and easily cause environmental pollution currently on the market.
(2) technical solution
To achieve the above object, the present invention provides the following technical solutions：A kind of novel degradable sterilization fresh-keeping film and its system
Preparation Method includes the following steps：
(1) raw material is mixed in proportion and is pelletized by double screw extruder；
(2) by squeezing out inflation film manufacturing machine film.
Preferably, raw material by weight percent (wt%) include polyvinyl alcohol (PVA) 40-55, polyethylene (PE) 30-45,
Potassium sorbate 0.3-0.5, nano-titanium dioxide 1-3, lubricant 10-15.
Preferably, raw material is mixed in proportion and is pelletized by double screw extruder, the temperature in the wherein areas 1-5 is respectively
60 DEG C, 75 DEG C, 80 DEG C, 100 DEG C, 100 DEG C, 85 DEG C of head temperature, rotating speed 30-50r/min.
Preferably, blown film is squeezed out, extruding pelletization temperature is 60 DEG C, 70 DEG C, 90 DEG C, 85 DEG C, rotating speed 30-50r/min；It blows
Film temperature is respectively 70 DEG C, 80 DEG C, 100 DEG C, 100 DEG C, rotating speed 40-50r/min
Preferably, PE is low density polyethylene (LDPE).
Preferably, lubricant is one or more of mixing of paraffin, stearic acid, calcium stearate.
(3) advantageous effect
The present invention provides a kind of novel degradable sterilization fresh-keeping films and preparation method thereof, have following advantageous effect：
(1) polyvinyl alcohol in present invention process formula has a large amount of hydroxyl polar group, can be acted on hydrone,
Make preservative film produced by the present invention that there is preferable moisture retention.It has good gas barrier effect simultaneously, reduces plant
Metabolism extends fresh keeping time.
(2) potassium sorbate in present invention process formula can effectively inhibit anti-spoilage organisms and mould, be a kind of safe suppression
Microbial inoculum makes preservative film produced by the present invention have efficient sterilization antibacterial functions.
(3) titanium dioxide nanoparticle in present invention process formula, filling-modified to preservative film, nano particle is filled not only
The processing performance of preservative film can be improved.Nano-titanium dioxide makes bacterial decomposition reach antibacterial effect under photocatalysis, makes
Preservative film prepared by the present invention has sterilizing function, can slow down food spoilage corruption, extend fresh keeping time.
(4) present invention process formula addition polyvinyl alcohol makes the preservative film prepared have degradable function, reduces pollution,
Conducive to environmental protection.
Specific implementation mode
Below in conjunction with the embodiment of the present invention, technical solution in the embodiment of the present invention is clearly and completely retouched
It states, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on the present invention
In embodiment, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, shall fall within the protection scope of the present invention.
Embodiment 1
A kind of novel degradable sterilization fresh-keeping film and preparation method thereof, novel degradable sterilization fresh-keeping film is by including following matter
It is prepared by the raw material for measuring score (wt%)：
Novel degradable sterilization fresh-keeping film is prepared by following steps：
(1) raw material is mixed in proportion and is pelletized by double screw extruder.The extrusion temperature in the areas 1-5 is respectively 60
DEG C, 75 DEG C, 80 DEG C, 100 DEG C, 100 DEG C, 85 DEG C of head temperature, rotating speed 30r/min.
(2) by squeezing out inflation film manufacturing machine film.Extruding pelletization temperature is 60 DEG C, 70 DEG C, 90 DEG C, 85 DEG C in this step, rotating speed
For 30r/min；Blown film temperature is respectively 70 DEG C, 80 DEG C, 100 DEG C, 100 DEG C, rotating speed 40r/min
Degradable sterilization fresh-keeping film made from the implementation case can effectively inhibit the growth of microorganism or kill microorganism, resist
Bacterium rate reaches 95%, can slow down food spoilage corruption, extends fresh keeping time, safe and non-toxic.Meanwhile it is degradable, reduce pollution.
Embodiment 2
A kind of novel degradable sterilization fresh-keeping film and preparation method thereof, novel degradable sterilization fresh-keeping film is by including following matter
It is prepared by the raw material for measuring score (wt%)：
Novel degradable sterilization fresh-keeping film is prepared by following steps：
(1) raw material is mixed in proportion and is pelletized by double screw extruder.The extrusion temperature in the areas 1-5 is respectively 60
DEG C, 75 DEG C, 80 DEG C, 100 DEG C, 100 DEG C, 85 DEG C of head temperature, rotating speed 40r/min.
(2) by squeezing out inflation film manufacturing machine film.Extruding pelletization temperature is 60 DEG C, 70 DEG C, 90 DEG C, 85 DEG C in this step, rotating speed
For 40r/min；Blown film temperature is respectively 70 DEG C, 80 DEG C, 100 DEG C, 100 DEG C, rotating speed 45r/min
Degradable sterilization fresh-keeping film made from the implementation case can effectively inhibit the growth of microorganism or kill microorganism, resist
Bacterium rate reaches 97%, can slow down food spoilage corruption, extends fresh keeping time, safe and non-toxic.Meanwhile it is degradable, reduce pollution.
Embodiment 3
A kind of novel degradable sterilization fresh-keeping film and preparation method thereof, novel degradable sterilization fresh-keeping film is by including following matter
It is prepared by the raw material for measuring score (wt%)：
Novel degradable sterilization fresh-keeping film is prepared by following steps：
(1) raw material is mixed in proportion and is pelletized by double screw extruder.The extrusion temperature in the areas 1-5 is respectively 60
DEG C, 75 DEG C, 80 DEG C, 100 DEG C, 100 DEG C, 85 DEG C of head temperature, rotating speed 50r/min.
(2) by squeezing out inflation film manufacturing machine film.Extruding pelletization temperature is 60 DEG C, 70 DEG C, 90 DEG C, 85 DEG C in this step, rotating speed
For 50r/min；Blown film temperature is respectively 70 DEG C, 80 DEG C, 100 DEG C, 100 DEG C, rotating speed 50r/min
Degradable sterilization fresh-keeping film made from the implementation case can effectively inhibit the growth of microorganism or kill microorganism, resist
Bacterium rate reaches 98%, can slow down food spoilage corruption, extends fresh keeping time, safe and non-toxic.Meanwhile it is degradable, reduce pollution.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
Understanding without departing from the principles and spirit of the present invention can carry out these embodiments a variety of variations, modification, replace
And modification, the scope of the present invention is defined by the appended.
Claims (6)
1. a kind of novel degradable sterilization fresh-keeping film and preparation method thereof, which is characterized in that include the following steps：
(1) raw material is mixed in proportion and is pelletized by double screw extruder；
(2) by squeezing out inflation film manufacturing machine film.
2. a kind of novel degradable sterilization fresh-keeping film according to claim 1 and preparation method thereof, which is characterized in that press matter
The raw material of amount percentage (wt%) includes polyvinyl alcohol (PVA) 40-55, polyethylene (PE) 30-45, potassium sorbate 0.3-0.5, receives
Rice titanium dioxide 1-3, lubricant 10-15.
3. a kind of novel degradable sterilization fresh-keeping film according to claim 1 and preparation method thereof, which is characterized in that will be former
Material is mixed in proportion and is pelletized by double screw extruder, the temperature in the wherein areas 1-5 is respectively 60 DEG C, 75 DEG C, 80 DEG C, 100
DEG C, 100 DEG C, 85 DEG C of head temperature, rotating speed 30-50r/min.
4. a kind of novel degradable sterilization fresh-keeping film according to claim 1 and preparation method thereof, which is characterized in that squeeze out
Blown film, extruding pelletization temperature are 60 DEG C, 70 DEG C, 90 DEG C, 85 DEG C, rotating speed 30-50r/min；Blown film temperature is respectively 70 DEG C, 80
DEG C, 100 DEG C, 100 DEG C, rotating speed 40-50r/min.
5. a kind of novel degradable sterilization fresh-keeping film according to claim 1 or 2 and preparation method thereof, which is characterized in that
PE is low density polyethylene (LDPE).
6. a kind of novel degradable sterilization fresh-keeping film according to claim 1 or 2 and preparation method thereof, which is characterized in that
Lubricant is one or more of mixing of paraffin, stearic acid, calcium stearate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711407839.7A CN108342039A (en) | 2017-12-22 | 2017-12-22 | A kind of novel degradable sterilization fresh-keeping film and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711407839.7A CN108342039A (en) | 2017-12-22 | 2017-12-22 | A kind of novel degradable sterilization fresh-keeping film and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN108342039A true CN108342039A (en) | 2018-07-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711407839.7A Pending CN108342039A (en) | 2017-12-22 | 2017-12-22 | A kind of novel degradable sterilization fresh-keeping film and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109370329A (en) * | 2018-10-10 | 2019-02-22 | 江苏银杏湖生物科技有限公司 | A kind of anti-mildew fresh-keeping film and preparation method thereof for agricultural product |
| CN109370129A (en) * | 2018-10-29 | 2019-02-22 | 安徽精乐塑业有限公司 | A kind of food package film |
| CN109504009A (en) * | 2018-10-29 | 2019-03-22 | 安徽精乐塑业有限公司 | A kind of preparation method of food package film |
-
2017
- 2017-12-22 CN CN201711407839.7A patent/CN108342039A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109370329A (en) * | 2018-10-10 | 2019-02-22 | 江苏银杏湖生物科技有限公司 | A kind of anti-mildew fresh-keeping film and preparation method thereof for agricultural product |
| CN109370129A (en) * | 2018-10-29 | 2019-02-22 | 安徽精乐塑业有限公司 | A kind of food package film |
| CN109504009A (en) * | 2018-10-29 | 2019-03-22 | 安徽精乐塑业有限公司 | A kind of preparation method of food package film |
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| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180731 |
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| WD01 | Invention patent application deemed withdrawn after publication |