Anti-microbial and bacteriostatic preservative film and production method thereof

A preservative film and functional technology, applied in the field of antibacterial and antibacterial preservative film and its preparation, can solve unsafe, unhygienic and other problems, achieve excellent barrier properties, reduce damage, relax and continue to breathe and grow

Inactive Publication Date: 2013-07-17
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome some defects and unsafe and unhygienic problems existing in the existing fresh-keeping technology, and provide a kind of fresh-keeping film with good fresh-keeping effect and long fresh-keeping time, which has antibacterial and antibacterial functions and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Polyvinyl alcohol-1799: 11.00Kg

[0036] Polyvinyl alcohol-1788: 3.00Kg

[0037] Polyethylene oxide 0.95 Kg

[0038] Glycerol: 2.50Kg

[0039] Trimethylolpropane: 1.00Kg

[0040] Polyoxyethylene lauryl ether: 0.40Kg

[0041]Defoamer Silok? 4650 0.05 Kg

[0042] Leveling agent Silok? 8255 0.30 Kg

[0043] Release agent Silok? 413P 0.10 Kg

[0044] Superfine talcum powder: 0.60Kg

[0045] Water: 80.10Kg

[0046] The above groups are measured separately, first dissolve glycerin and trimethylolpropane in water, then dissolve polyvinyl alcohol-1799 and polyvinyl alcohol-1788, polyethylene oxide, polyoxyethylene lauryl ether, ultrafine talc powder, each The additives are added into water, heated to above 95°C and completely dissolved in water, dispersed at high speed for 30 minutes, cooled to 60°C, and a solution for casting film is prepared. The prepared solution is cast onto a steel belt through a casting die, and dried in a drying tunnel at 120-180° C. to form a f...

Embodiment 2

[0050] Polyvinyl alcohol-2299: 12.50Kg

[0051] Polyethylene oxide 0.80Kg

[0052] Glycerol: 2.00Kg

[0053] Polyethylene glycol-400 1.50Kg

[0054] Polyethylene glycol-6000 1.00Kg

[0055] Defoamer Silok?-4500 0.10Kg

[0056] Leveling agent Silok? 8255 0.50 Kg

[0057] Release agent Silok? 2193 0.20Kg

[0058] Polyoxyethylene monolaurate: 0.30Kg

[0059] Superfine precipitated white carbon black: 1.20Kg

[0060] Water: 80.00Kg

[0061] The above groups are measured separately, first add glycerol, polyethylene glycol-400 and polyethylene glycol-6000 into the water, then add polyvinyl alcohol-2299, polyethylene oxide, polyoxyethylene monolaurate, superfine Precipitated white carbon black and various component additives are added to water, and heated to 95 ° C to completely dissolve in water, dispersed at high speed for 30 minutes, cooled to 50 ° C, and a solution for casting film is prepared. The prepared solution is cast onto a steel belt through a casting die, and dr...

Embodiment 3

[0065] Polyvinyl alcohol-1799: 15.00Kg

[0066] Polyethylene oxide 0.80 Kg

[0067] Glycerol: 1.50Kg

[0068] Polyethylene glycol-400: 0.50Kg

[0069] Polyethylene glycol-1000: 0.50Kg

[0070] Polyoxyethylene monostearate 0.40Kg

[0071] Defoamer Silok? 4650 0.10 Kg

[0072] Leveling agent Silok? 8255 0.30Kg

[0073] Release agent Silok?-81 0.20Kg

[0074] Fumed silica 0.75Kg

[0075] Water: 80.00Kg

[0076] The above groups are measured separately, first add glycerol, polyethylene glycol-400 and polyethylene glycol-1000 into water, then add polyvinyl alcohol-1799, polyethylene oxide, polyoxyethylene monostearate, gas phase Add silicon dioxide and various component additives into water, and heat to 95°C to completely dissolve in water, disperse at high speed for 30 minutes, cool to 60°C, and prepare a solution for film casting. The prepared solution is cast onto a steel belt through a casting die, and dried in a drying tunnel at 120-180° C. to form a film. 120-180°C ...

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Abstract

The invention relates to an anti-microbial and bacteriostatic preservative film and a production method thereof. The preservative film comprises, by weight, 50%-80% of polyving akohol with 500 to 2400 degrees of polymerization and 80% to 99% degrees of alcoholysis, 10% to 25% of water-solubility polyhydroxy plasticizer, 1% to 5% of polyoxyethylene, 1% to 5% of capacity-increase compatilizer and 5% to 15% of other assistants. The production method includes dissolving water-solubility polyhydroxy plasticizer in water with total weight consisted of 4 to 8 times formulation, adding polyving akohol, polyoxyethylene, capacity-increase compatilizer and other assistants, heating up above 95 DEG C to make the mixed solution completely dissolved in water, dispersing for 30 to 60 minutes at high speed, cooling to 50 DEG C to 70 DEG C, preparing a solution used for curtain coating and filming, and finally the preservative film can be prepared by a solution curtain coating method. The preservative film has good anti-microbial and bacteriostatic effects and functions to packed and fresh-keeping fruits and vegetables on the premise of no any extra anti-microbial and bacteriostatic chemical assistants.

Description

technical field [0001] The invention relates to a functional fresh-keeping film, in particular to a fresh-keeping film with antibacterial and antibacterial functions and a preparation method thereof. This plastic wrap is suitable for fresh food preservation and storage of daily fresh fruits and vegetables. technical background [0002] After fresh fruits and vegetables are picked, their biological activity still exists, and they continue to grow and develop in the natural environment, but this growth is at the expense of sacrificing and consuming the nutrients of the fruits and vegetables, which is why Many fruits and vegetables will become aging and fibrous after being picked and placed for a period of time, which will cause the fruits and vegetables to lose their taste and nutrients; in addition, fruits and vegetables themselves are extremely rich in nutrients, so they are often parasitized by microorganisms and bacteria. Rot and spoilage. The aging, rot and deterioratio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/18C08L29/04C08L71/08C08K5/053A23B7/00
Inventor 崔跃飞汤惠华
Owner SOUTH CHINA UNIV OF TECH
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