CN102040046A

CN102040046A - Fresh-keeping film

Info

Publication number: CN102040046A
Application number: CN201010289730XA
Authority: CN
Inventors: 神堂阳一
Original assignee: Shindo Co Ltd
Current assignee: Shindo Co Ltd
Priority date: 2009-10-23
Filing date: 2010-09-20
Publication date: 2011-05-04
Also published as: JP3156597U

Abstract

The present invention provides a fresh-keeping film which has no deteriorated fresh-keeping effect even at a state that the fresh-keeping film is repeatedly cleaned and reused. In the film (2) which is used for keeping the freshness of raw meat, fresh fish, vegetable, etc., the film (2) is made of a substrate with high softness. The substrate is non-woven cloth or paper, and nano-particles of silver are penetrated and fixed in the fibers of the substrate.

Description

Preservative film

Technical field

The present invention relates to a kind of preservative film that is used to keep the freshness of raw meat, fresh fish, vegetables etc.

Background technology

In the past, as the preservative film that can keep the freshness of food well, had for example at patent documentation 1 disclosed preservative film.

For above-mentioned preservative film in the past, after with preservative film cleaning etc. under nonexpondable situation, the problem that exists its fresh-keeping ingredients from lossing that comprises, its fresh-keeping effect to weaken.

Summary of the invention

Even one of purpose of the present invention is to provide a kind of the cleaning to wait the also unabated preservative film of its fresh-keeping effect,, adopted following structure for realizing at least a portion of this purpose.

The invention provides a kind of preservative film, it is used to keep the freshness of raw meat, fresh fish, vegetables etc., and wherein, described film is made of the base material with flexibility, and described base material is nonwoven fabrics or stationery, and the infiltration set has the nano particle of silver in the fiber of this base material.

For preservative film of the present invention, constitute the nano particle that infiltration set in the fiber of nonwoven fabrics, stationery of this film has silver, even clean this film, fixing Nano silver grain can not run off yet, thereby can continue long-term fresh-keeping effect.

Description of drawings

Fig. 1 is the schematic diagram of the manufacturing installation of preservative film.

Description of reference numerals

1 installation portion

2 nonwoven fabrics

3a, 3b roller

6 infiltration rollers

7 silver ion electrolytic baths

8a, 8b pull and stretch roller

9 airers

10 reeling ends

The specific embodiment

Below, use the embodiment explanation to be used for mode of the present invention.

The preservative film of present embodiment is to use manufacturing installation manufacturing shown in Figure 1.

The original yardage roll of nonwoven fabrics 2 is installed at the installation portion 1 of manufacturing installation in the accompanying drawings.This nonwoven fabrics 2 is for containing cotton 100% nonwoven fabrics, and for example its width dimensions is 800mm roughly, and the original yardage roll of nonwoven fabrics 2 is the yardage rolls after coiling length on the paper tube is the nonwoven fabrics of roughly 1800m.

Be clipped between top roll 3a and the lower roll 3b by so the original yardage roll of nonwoven fabrics 2 being installed on the installation portion 1 and with nonwoven fabrics 2 in rotating mode, it can be pulled out to approximate horizontal according to priority.For example be provided with tank 4 etc. below this lower roll 3b in advance, it can will be clipped between top roll 3a and the lower roll 3b and the nonwoven fabrics 2 that goes out of layback is wetting downstream.

The nonwoven fabrics 2 that is drawn out is guided by the infiltration roller 6 that rotates counterclockwise to the lower side from guiding roller 5, and nonwoven fabrics 2 is by in the silver ion electrolytic bath 7 of infiltration below being arranged at infiltration roller 6.

In this silver ion electrolytic bath 7, have nano particle with 100 to 500 times water-reducible silver with being dispersed, the nano particle of silver is that the particle of 3nm～100nm constitutes by particle diameter for example.

Need to prove that the nano particle of this silver for example is the particle powder by the silver of the disclosed manufacture method manufacturing of TOHKEMY 2006-213955 communique.

Rotation along with infiltration roller 6, carry out so-called dipping (ドブ Stains け in the silver ion battery acid of nonwoven fabrics 2 in silver ion electrolytic bath 7 of the periphery of infiltration roller 6), the nano particle of silver is penetrated in the fiber that constitutes nonwoven fabrics 2, this silver-colored nano particle is not to concentrate on a position, but is penetrated into whole fibers of nonwoven fabrics 2 with well distributed state.

In the nano particle infiltration that so makes silver and be fixed under the state in whole fibers of nonwoven fabrics 2, nonwoven fabrics 2 is clamped between the pull and stretch roller 8a and pull and stretch lower roll 8b that is located at the downstream, between this roller 8a, 8b, nonwoven fabrics 2 is subjected to the drawing pressure pull and stretch, and this nonwoven fabrics 2 is directed in the airer 9 in downstream then.

In this airer 9, portion for example disposes thermal source in 13 positions within it, nonwoven fabrics 2 downstream side shifting during, the fiber that constitutes nonwoven fabrics 2 is by dry well, infiltration anchors at the nano particle of the silver in the fiber and is fixed by this airer 9.

Need to prove,, can suitably control drying time, thereby it is fixing reliably to make infiltration anchor at the nano particle of the silver in the fiber of nonwoven fabrics 2 by control according to the thickness of nonwoven fabrics 2, kind, size etc. for this airer 9.Be provided with reeling end 10 in the downstream of airer 9, nonwoven fabrics 2 is batched by this reeling end 10.

Need to prove that the nonwoven fabrics 2 that is batched is cut off subsequently and is processed as the size that for example is roughly 400mm * 400mm.

The nano particle of silver is permeated dispersedly to be affixed in whole fibers and it is firmly fixed, thereby can obtain the preservative film made by nonwoven fabrics 2, the preservative film that obtains like this, even carrying out 50～100 times repeatedly cleans, the nano particle of the silver of infiltration set can not come off yet, and under long-term reusable situation, also can keep the fresh-keeping effect of realizing by silver ion.

Need to prove, in the present example, though illustration goes out to use the nonwoven fabrics 2 that contains cotton 100% to form the situation of preservative films, but can replace nonwoven fabrics 2 and form preservative film with the stationery that contains fiber structure with flexibility, utilize manufacturing installation shown in Figure 1, even the employing stationery also can make silver-colored nano particle permeate well dispersedly and be affixed to the whole of this fiber, and it is fixed.

Preservative film for acquisition like this, for example when freezing, stored refrigerated raw meat, fresh fish, vegetables etc., by with preservative film they being wrapped or preservative film is layered on belows such as raw meat, wrapping preservative film, can keep the freshness of raw meat etc. well with the state of upper surfaces such as direct contact raw meat.

Can use preservative film by the mode that makes food direct contact preservative films such as raw meat like this, and in order further to prevent water evaporates, can put it in the leakproof tank and and be paved with preservative film etc. in the leakproof tank bottom, in addition, can also after food be wrapped preservative film, further carry out the leak free mode and use at its outside coating plastic preservative film (wrap).

Especially,, can in dish, spread preservative film, place the sushi material then thereon and wait and preserve for preserving sushi material etc.

And, by with large-sized preservative film with large-scale integral coating such as tuna, can transport with fresh-keeping in good conditionly.

Under the state that coats food, utilize the fresh-keeping effect of realizing by silver ion, in the ethylene gas minimizing of generations such as vegetables, and can prevent oxidation well.

Need to prove, in the experiment of Foundation Japan textile detection association, preservative film in this example has obtained the bactericidal activity value be more than 3.0 and bacterium to suppress activity value be experiment effect more than 5.5, especially the sterilizing rate to the staphylococcus aureus that becomes the food poisoning and the reason of stench is 99.9%, thereby guarantees superior antibacterial ability.

In addition, also having obtained sterilizing rate for the pneumobacillus that becomes reasons such as pneumonia is 99.9% experiment effect.

Claims

1. preservative film, the freshness that it is used to keep raw meat, fresh fish, vegetables etc. is characterized in that,

Described film is made of the base material with flexibility, and described base material is nonwoven fabrics or stationery, and the infiltration set has the nano particle of silver in the fiber of this base material.