CN102001480A

CN102001480A - Specific antibacterial PE (Polyethylene) preserving bag

Info

Publication number: CN102001480A
Application number: CN2010105178746A
Authority: CN
Inventors: 陈迦乐
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-10-16
Filing date: 2010-10-16
Publication date: 2011-04-06

Abstract

The invention relates to a PE (polyethylene) preserving bag containing glass carrier silver ion bactericide. The preserving bag is formed by adding 0.001-5 percent of glass carrier silver ion bactericide to a common PE preserving bag or further adding one or more of 1-5 percent of antifogging agent and 2-5 percent of degradable master batch. The PE in the PE preserving bag is one of high-density PE, low-density PE or linear low-density PE or a mixture of the high-density PE, the low-density PE and the linear low-density PE according to a certain proportion. The manufacture process of the PE preserving bag comprises the following steps of: mixing and pelletizing the PE and the glass carrier silver ion bactericide through a single-screw or twin-screw extruder to prepare antibacterial master batch; and blowing or casting, making bags and making antibacterial preserving bag through the extruder according to the prescription. The finished product has favorable antibacterial property, long ageing and discoloration resistance and particularly has superior action on inhibiting and killing bacteria, such as colon bacillus, staphylococcus aureus, and the like.

Description

A kind of specific antibacterial PE (polyethylene) freshness protection package

Technical field

The present invention relates to contain a kind of freshness protection package of antiseptic, a kind of specifically freshness protection package that contains the glass carrier silver ion antimicrobial agent contains this antiseptic, long, the film color antifade of the antibiotic good and timeliness of freshness protection package.

Technical background

All be common freshness protection package on the home market at present, do not contain antiseptic, do not contain the glass carrier silver ion antimicrobial agent especially.Developed countries has entered the antibiotic epoch in the eighties in last century.Domestic antibiotic in recent years industry development just begins, but technology is very different, as: antibacterial effect is not good, easy to change or the like, and problem has much room for improvement.Along with growth in the living standard, people are more and more higher to living standard and quality, environmental requirement, to the hygiene and health conditional request more a step improve, people are also very high to the requirement of antimicrobial product.

The anti-bacterial refreshing bag that the present invention relates to has excellent inhibition or killing action to Escherichia coli, gold-coloured staphylococci, and inhibition or killing rate reach more than 99.99%.Antiseptic of the present invention is to belong to the glass carrier silver ion antimicrobial agent, retrieves a large amount of patent documentations, and still the report of glass carrier silver ion antimicrobial agent is found to add in common polythene freshness protection package the inside in the end.

Summary of the invention

The present invention contains the anti-bacterial refreshing bag with glass carrier silver ion antimicrobial agent, and the antiseptic in the described anti-bacterial refreshing bag is a kind of the silver ion antimicrobial agent of glass as carrier.Described anti-bacterial refreshing bag antibacterial mechanisms is that under the condition of humidity, the present invention slowly discharges the small amount of silver ion.Because bacterium surface has negative charge, the silver ion that therefore has positive charge is attracted to bacterium surface, and then destroys its electrolyte balance, causes bacterium because cell membrane is impaired and dead.

Also having a kind of viewpoint is that silver ion enters bacterium inside, with cell enzyme reaction and the chemical combination of bacterium, has suppressed the activity of cellular enzymes and the breeding regeneration of bacterium, reaches the effect of kill bacteria.In polyethylene, add inorganic antiseptic,, can produce muddy sense usually, so but the base material of silver ion antimicrobial agent of the present invention is the transparency that glass can be kept transparent resin by the control ratio of refraction because of polyethylene is a transparent material.This is its advantage, and anti-bacterial refreshing bag just of the present invention has surprising antifade effect.After so-called variable color just was meant that general film adds common inorganic antiseptic, As time goes on the color of film became little Huang or brown problem,

Glass carrier silver-ion antibiotic freshness protection package main points of the present invention are to contain and have the glass carrier silver ion antimicrobial agent that (from Ishizuka Glass, commodity are by name

), select below following, the preferred 5um of its particle diameter 50um.Described glass carrier silver-ion antibiotic freshness protection package composition is polyethylene, glass carrier silver ion antimicrobial agent, or further contains in antidim compound, the degradable master batch one or more.Respectively polyethylene more than 85%, glass carrier silver ion antimicrobial agent 0.001%-5%, antidim compound 1%-5%, degradable master batch 2%-5%.

At first glass carrier silver ion antimicrobial agent and part polyethylene are passed through single screw rod or twin screw plasticator extruding pelletization by a certain percentage, become the antibacterial polyethylene master batch, it is than classifying glass carrier silver ion antimicrobial agent 0.001%-40%, polyethylene 60%-99.999% as, preferred glass carrier silver ion antimicrobial agent 25%, polyethylene 75%, more preferably glass carrier silver ion antimicrobial agent 12%, polyethylene 88%.Polyethylene can be high density polyethylene (HDPE), low density polyethylene (LDPE) or linear low density polyethylene, preferably with the polyethylene of above-mentioned anti-bacterial refreshing bag homogeneity.

Above-mentioned single screw rod or twin screw plasticator, preferred twin screw plasticator, more preferably low-temperature and high-speed twin screw plasticator.

Above-mentioned antibacterial matrices and polyethylene in proportion in mixer the inside blend, are added the material that mixes in the plasticator and to melt extrude, blown film, bag, to prepare anti-bacterial refreshing bag or curtain coating, bag, prepare the anti-bacterial refreshing bag.Blown film, curtain coating can be selected the single or multiple lift co-extrusion, and internal layer and skin or internal layer contain antiseptic when multi-layer co-extruded, and interlayer can contain also can not contain antiseptic.When multi-layer co-extruded, the part by weight of ectonexine and interlayer is at 0.001%-99.999%:99.9999%-0.001%.

Concrete preferred implementation

The case study on implementation of enumerating below is to further specify the present invention, but the present invention is not limited by these embodiments, and any impartial variation and the modification change all belongs to the covering scope of claim of the present invention.

Case study on implementation 1

A kind of anti-bacterial refreshing bag that contains the glass carrier silver ion antimicrobial agent, its composition are polyethylene 95%, antibacterial polyethylene master batch 5%.

Manufacture method adds 5 kilograms of antibacterial polyethylene master batches in 95 kilograms of polyethylenes, fully mix in mixer again, the material that mixes is added in the plasticator melt extrude, blown film, bag, prepare the anti-bacterial refreshing bag.

Case study on implementation 2

A kind of anti-bacterial refreshing bag that contains the glass carrier silver ion antimicrobial agent, its composition are polyethylene 90%, antibacterial polyethylene master batch 10%.

Manufacture method adds 10 kilograms of antibacterial polyethylene master batches in 90 kilograms of polyethylenes, fully mix in mixer again, the material that mixes is added in the plasticator melt extrude, curtain coating, amount to bag, prepare the anti-bacterial refreshing bag.

Case study on implementation 3

A kind of anti-bacterial refreshing bag that contains the glass carrier silver ion antimicrobial agent, its composition are polyethylene 89%, antibacterial polyethylene master batch 5%, antidim compound 3%, degradable master batch 3%.

Manufacture method, in 89 kilograms of polyethylenes, add 5 kilograms of antibacterial polyethylene master batches, 3 kilograms of antidim compounds, 3 kilograms of degradable master batches, in mixer, fully mix again, the material that mixes is added in the plasticator melt extrude, blown film, bag, prepare the antibacteria degradation freshness protection package.

Case study on implementation 4

A kind of anti-bacterial refreshing bag that contains the glass carrier silver ion antimicrobial agent, its composition are that internal layer and skin are polyethylene 95%, antibacterial polyethylene master batch 5%, and interlayer is a polyethylene 100%.

Manufacture method, in 95 kilograms of polyethylenes, add 5 kilograms of antibacterial polyethylene master batches, in mixer, fully mix again, the material that mixes is added in the screw cylinder under the outer and internal layer of plasticator, will melt extrude in the screw cylinder under 100 kilograms the polyethylenes adding plasticator interlayer, blown film, bag, prepare the anti-bacterial refreshing bag.

Claims

1. one kind contains glass carrier silver ion antimicrobial agent freshness protection package, composition: polyethylene, glass carrier silver ion antimicrobial agent, or further contain in antidim compound, the degradable master batch one or more.

2. can all be the wherein a kind of of high density polyethylene (HDPE), low density polyethylene (LDPE) or linear low density polyethylene according to the polyethylene material in the claim 1.Also can be that high density polyethylene (HDPE), low density polyethylene (LDPE) and linear low density polyethylene mix (concrete ratio: 99.8%-0.1%: 99.8%-0.1%: 99.8%-0.1%), but preferred high density polyethylene (HDPE) in proportion.

3. be to be present in freshness protection package inside according to the glass carrier silver ion antimicrobial agent in the claim 1, glass carrier silver ion antimicrobial agent weight in freshness protection package is 0.001%-5%.

4. can further contain wherein one or more according to the antidim compound in the claim 1, degradable master batch.

5. according to the weight 1%-5% of the antidim compound in the claim 4 in freshness protection package.

6. according to the weight 2%-5% of degradable master batch in freshness protection package in the claim 4.

7. extrude at plasticator according to the anti-bacterial refreshing bag in the claim 1, blown film or curtain coating, bag, make, preferred blown film.

8. be that mode with antibacterial matrices adds the polyethylene the inside according to the glass carrier silver ion antimicrobial agent in the claim 1.

9. can be that the single or multiple lift co-extrusion is extruded according to the plasticator in the claim 7.

10. multi-layer co-extruded according in the claim 9, when multi-layer co-extruded, the part by weight of ectonexine and interlayer is at 0.001%-99.999%: 99.9999%-0.001%.