CN102875868A - Method for preparing food fresh-keeping film - Google Patents
Method for preparing food fresh-keeping film Download PDFInfo
- Publication number
- CN102875868A CN102875868A CN 201210333587 CN201210333587A CN102875868A CN 102875868 A CN102875868 A CN 102875868A CN 201210333587 CN201210333587 CN 201210333587 CN 201210333587 A CN201210333587 A CN 201210333587A CN 102875868 A CN102875868 A CN 102875868A
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- Prior art keywords
- food fresh
- keeping film
- preparation
- film
- fresh keeping
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- Compositions Of Macromolecular Compounds (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The invention discloses a method for preparing a food fresh-keeping film. The method is characterized by comprises the following steps of: mixing nano titanium dioxide and polyethylene resins; performing extrusion granulating through a twin-screw machine; preparing an antibacterial master batch; and extruding and blowing to form a packaging film. According to the method, polyethylene is a low-density polyethylene, and the nano titanium dioxide subjected to surface treatment by being blended with a surface treating agent and a dispersing agent. By the method, the titanium dioxide in the prepared food fresh-keeping film is dispersed uniformly, and the shortcoming that nano particles in polymers are reunited in a dispersive mode is overcome; the method has the advantages that the prepared food fresh-keeping film is non-toxic and has an antibacterial effect; and the food fresh-keeping film has relatively high tensile strength.
Description
Technical field
The present invention relates to the packing film field, particularly a kind of food fresh keeping membrane.
Background technology
Polyethylene film has the general purposes of factory at packaging field, for improving Package Quality, prolong the quality guaranteed period of packing content thing, except adopting the PE film and having the barrier of Film laminated with the raising wrapping material of barrier, adding the packing film that people's nano antibacterial agent preparation has anti-microbial property in PE also is effective means, and the film with anti-microbial property that makes also can with the more excellent wrapping material of the compound processability of high barrier film, this based packaging material is at food, medicine and agricultural product packaging aspect have very outstanding practical value, during especially for food product pack, adding preservative agent and have the long quality guaranteed period, the security that has improved food not in the food.
Summary of the invention
The object of the invention is to provide a kind of preparation method with food fresh keeping membrane of good anti-microbial property.
A kind of preparation method of food fresh keeping membrane is characterized in that, nano titanium oxide mixed with polyvinyl resin, and by the dual-screw-stem machine extruding pelletization, preparation antibacterial plastic concentrate, extruded blown packing film.
Described polyethylene is Low Density Polyethylene.
Described nano titanium oxide is by carrying out surface treatment with surface treatment agent, dispersant.
The invention has the beneficial effects as follows:
1, the prepared food fresh keeping membrane titanium dioxide of food fresh keeping membrane preparation method of the present invention is uniformly dispersed, and can overcome nanoparticle disperses reunion in polymkeric substance defective;
2, the prepared food fresh keeping membrane of food fresh keeping membrane preparation method of the present invention has advantage nontoxic, antibacterial effect;
3, the prepared food fresh keeping membrane of food fresh keeping membrane preparation method of the present invention has higher tensile strength.
Embodiment
The below's invention is further explained explanation.
Embodiment 1
A kind of preparation method of food fresh keeping membrane is characterized in that, nano titanium oxide mixed with polyvinyl resin, and by the dual-screw-stem machine extruding pelletization, preparation antibacterial plastic concentrate, extruded blown packing film.
Described polyethylene is Low Density Polyethylene.
Described nano titanium oxide is by carrying out surface treatment with surface treatment agent, dispersant.
Claims (3)
1. the preparation method of a food fresh keeping membrane is characterized in that, nano titanium oxide is mixed with polyvinyl resin, and by the dual-screw-stem machine extruding pelletization, preparation antibacterial plastic concentrate, extruded blown packing film.
2. the preparation method of food fresh keeping membrane according to claim 1 is characterized in that, described polyethylene is Low Density Polyethylene.
3. the preparation method of food fresh keeping membrane according to claim 1 and 2 is characterized in that, described nano titanium oxide is by carrying out surface treatment with surface treatment agent, dispersant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210333587 CN102875868A (en) | 2012-09-11 | 2012-09-11 | Method for preparing food fresh-keeping film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210333587 CN102875868A (en) | 2012-09-11 | 2012-09-11 | Method for preparing food fresh-keeping film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102875868A true CN102875868A (en) | 2013-01-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210333587 Pending CN102875868A (en) | 2012-09-11 | 2012-09-11 | Method for preparing food fresh-keeping film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102875868A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103881230A (en) * | 2014-03-25 | 2014-06-25 | 浙江大学 | Nano composite polyethylene film as well as preparation method and application thereof |
| CN105524332A (en) * | 2016-02-03 | 2016-04-27 | 河北麦森钛白粉有限公司 | Production process of fresh-keeping film based on titanium dioxide |
| CN106496749A (en) * | 2016-11-24 | 2017-03-15 | 无锡奔牛生物科技有限公司 | A kind of food fresh keeping membrane with light blocking function |
-
2012
- 2012-09-11 CN CN 201210333587 patent/CN102875868A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103881230A (en) * | 2014-03-25 | 2014-06-25 | 浙江大学 | Nano composite polyethylene film as well as preparation method and application thereof |
| CN105524332A (en) * | 2016-02-03 | 2016-04-27 | 河北麦森钛白粉有限公司 | Production process of fresh-keeping film based on titanium dioxide |
| CN106496749A (en) * | 2016-11-24 | 2017-03-15 | 无锡奔牛生物科技有限公司 | A kind of food fresh keeping membrane with light blocking function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130116 |