CN1539874A

CN1539874A - Antibacterial, keeping foodstuff fresh, uvioresistant plastic fabricated from Nano material

Info

Publication number: CN1539874A
Application number: CNA031165494A
Authority: CN
Inventors: 陈建强; 范振天; 钱素平; 应卫江
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-04-22
Filing date: 2003-04-22
Publication date: 2004-10-27

Abstract

An antibacterial, antistaling and ultraviolet-resistant plastics contains polyolefin plastics, montmorillonite, negative-ion microparticles, ultraviolet-resistant microparticles, photocatalyst nanoparticles, antibacterial inorganic microparticles, and titanate or silane coupling agent. Its film is prepared from said plastics, polyethylene and assistant. Its advantage is high effect.

Description

A kind of antibiotic, fresh-keeping, uvioresistant plastics of nano material

Technical field

The present invention relates to antibiotic, fresh-keeping, the uvioresistant plastics of a kind of plastics film, particularly a kind of nano material.

Background technology

The normally used in the market plastics film that is used for food product pack all is to make with common polyethylene, as being commonly used to carry out fruit in the family, the fridge freshness retaining packing of vegetables, because fruit, vegetables still are live body after plucking, therefore when storage, also fruit must kept, suppress metabolism under the eubolism prerequisite of vegetables to greatest extent, it is ripe and old and feeble to delay it, effectively prevent microorganism growth, but the fruit of existing sealed polyethylene plastic packing, vegetables, the gas moisture content that produces all is enclosed in the bag in its maturing process, cause the bacterium ramp, fruits and vegetables are very fast to rot.

Summary of the invention

The objective of the invention is to solve in the prior art that the normally used plastics film that is used for food product pack all is to make with common polyethylene on the market, as being commonly used to carry out fruit in the family, the fridge freshness retaining packing of vegetables, because fruit, vegetables still are live body after plucking, therefore when storage, also fruit must kept, suppress metabolism under the eubolism prerequisite of vegetables to greatest extent, it is ripe and old and feeble to delay it, effectively prevent microorganism growth, but the fruit of existing sealed polyethylene plastic packing, vegetables, the gas moisture content that produces all is enclosed in the bag in its maturing process, cause the bacterium ramp, the very fast septic problem of fruits and vegetables.The present invention designs the antibiotic of a kind of nano material, fresh-keeping, the uvioresistant plastics, it is characterized in that forming: polyolefin plastics 66% by following constituent and weight percent---78%, polynite 2%---5%, negative ion micro mist 3%---5%, uvioresistant micro mist 5%---6%, photocatalytic nanometer powder 5%---15%, inorganic antibacterial powder 2%---5%, metatitanic acid fat or silane coupling agent 1%---3%, described polyolefin plastics is polypropylene or polyethylene, described negative ion micro mist is the tourmaline powder that contains high boron, its major ingredient is a boron, aluminium, silicon, manganese, described uvioresistant micro mist is a zinc oxide, described photocatalytic nanometer powder is nano level titanium dioxide, described inorganic antibacterial powder is a kind of or its mixture of silver suboxide or cupric oxide or silicon-dioxide, utilize the antibiotic of nano material, fresh-keeping, the plastics film that the uvioresistant plastic master batch is made, it is characterized in that forming: antibiotic by following constituent and weight percent, fresh-keeping, uvioresistant plastic master batch 2%---8%, polyethylene 90%---96%, auxiliary agent 1%---2%.Advantage of the present invention is a separate electronic under the effect of photocatalyst---the hole is to the activated surface adsorbent, produce strong oxidizer and strong reductant, the energy kill bacteria, the permanent electrode of negative ion micro mist is under the effect of photocatalyst, inspire hydroxyl negative ion and active oxygen continually, suppress the metabolism of fruit, vegetables, the enzymic activity that reduces fruit, vegetables makes unbalance being obstructed of electric biological respinse of fruit, vegetables, thereby the prolongation storage time reaches the purpose of anti-bacterial refreshing.

Below in conjunction with embodiment the present invention is elaborated,

Embodiment

Press blending ratio with 70 kilograms of polyolefin plasticss, 5 kilograms of polynites, 5 kilograms of negative ion micro mists, 5 kilograms of uvioresistant zinc oxide ultra_fine powderses, 10 kilograms of the titanium dioxide powders of photocatalytic nanometer level, 2 kilograms in the antibiotic powder of silver suboxide, 3 kilograms of silane coupling agents, after the high speed kneader is mediated, add twin screw extruder, under the condition of 180 degree, extrude cooling and dicing, make master batch, then with 8 kilograms master batch, 90 kilograms polyethylene, 2 kilograms of auxiliary agents, after the high speed kneader is mediated, add the blow molding of plastics film blow moulding machine.

Claims

1, a kind of antibiotic, fresh-keeping, uvioresistant plastics of nano material is characterized in that being made up of following constituent and weight percent:

Polyolefin plastics 66%-78%,

Polynite 2%-5%,

Negative ion micro mist 3%-5%,

Uvioresistant micro mist 5%-6%,

Photocatalytic nanometer powder 5%-15%,

Inorganic antibacterial powder 2%-5%,

Metatitanic acid fat or silane coupling agent 1%-3%,

2, antibiotic, fresh-keeping, the uvioresistant plastics of the described a kind of nano material of claim 1, it is characterized in that: described polyolefin plastics is polypropylene or polyethylene, described negative ion micro mist is the tourmaline powder that contains high boron, its major ingredient is boron, aluminium, silicon, manganese, described uvioresistant micro mist is a zinc oxide, described photocatalytic nanometer powder is nano level titanium dioxide, and described inorganic antibacterial powder is a kind of or its mixture of silver suboxide or cupric oxide or silicon-dioxide

3, utilize antibiotic, fresh-keeping, the plastics film that the uvioresistant plastic master batch is made of the described a kind of nano material of claim 1, it is characterized in that forming by following constituent and weight percent:

Antibiotic, fresh-keeping, the uvioresistant plastic master batch 2%-8% of nano material,

Polyethylene 90%-96%,

Auxiliary agent 1%-2%.