CN2320032Y - Composite fresh-keeping film and box - Google Patents
Composite fresh-keeping film and box Download PDFInfo
- Publication number
- CN2320032Y CN2320032Y CN 98236858 CN98236858U CN2320032Y CN 2320032 Y CN2320032 Y CN 2320032Y CN 98236858 CN98236858 CN 98236858 CN 98236858 U CN98236858 U CN 98236858U CN 2320032 Y CN2320032 Y CN 2320032Y
- Authority
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- China
- Prior art keywords
- material layer
- layers
- film
- keeping film
- natural complex
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Abstract
The utility model relates to a composite fresh-keeping film, which is characterized in that the utility model is composed of a reinforcing material layer, a high polymer material layer and an active parting material layer which are folded in sequence. The reinforcing material layer is made of one of non-woven fabric, weaving and reinforcing paper, the high polymer material layer is made of one of polysulfone, polyethersulfone, polyacrylonitrile, polycarbonate, polyimide, polyetherimide, vulcanization polysulfone and cellulose, and the active parting material layer (3) is made of one of silicon rubber, poly 4-methylpentene-1, poly trimethyl silicone propyne and silicone. The fresh-keeping time of vegetables and fruits can be prolonged effectively by the utility model.
Description
The utility model relates to the preservation technique of vegetables, fruit, and a kind of natural complex fresh-keeping film is provided especially, and it can be used to make crisper and deposit vegetables, fruit, can prolong the fresh keeping time of vegetables, fruit by this effectively.
The maximally related technology of food fresh keeping and the utility model that is used for is the fine and close homogeneous film of being made by Natene, transparent, mechanical performance is pretty good, certain toughness and elasticity are arranged, airtight body and water vapour, can prevent distributing of water vapour well, make covering in the time of also being applicable to the micro-wave oven processed food, but because its impermeability, water vapour is big the globule in the film surface condensation, make by fresh-keeping food, vegetables, environment is moist especially around the fruit etc., cause rottenly easily, lose delicate flavour, so freshness date is not long, simultaneously polyethylene by water infiltration after, its sealing is very poor, can not reuse waste resource and money after opening.
The purpose of this utility model is to provide a kind of can prolong vegetables, the natural complex fresh-keeping film of fruit freshness preserving time and crisper effectively.
The utility model provides a kind of natural complex fresh-keeping film, it is characterized in that: this natural complex fresh-keeping film is formed by stacking successively by layers of reinforcement (1), polymer material layer (2) and active separating layers of material (3).Described layers of reinforcement is nonwoven, weave cotton cloth, strengthen a kind of of paper; Polymer material layer is a kind of of polysulfones, polyether sulfone, polyacrylonitrile, Merlon, polyimides, PEI, carbonization polysulfones, cellulose; Active separating layers of material (3) be silicon rubber, poly 4-methylpene-1, gather a kind of of trimethyl silicane propine, silicone.Concrete method for making of the present utility model is to coat the macromolecular material polymer solution on the reinforcing material supporting layer as ground floor, the gel film forming is as the second layer, on the second layer, be coated with again with active parting material polymer solution, behind the film-forming as the 3rd layer, natural complex fresh-keeping film.The utility model also provides a kind of crisper, being about to composite membrane cuts randomly on demand, as circle, rectangle, rhombus, periphery is sticking to stick on the storage box of an opening with adhesive sticker or double faced adhesive tape, make crisper, place refrigerator or indoor preservation vegetables, fruit, not by extra power.Composite membrane was used for the industrial gasses processing under power drive more in the past, and the utility model proposes first under the situation of no extra power, changes the composite membrane pore structure, thereby manufacturing preservative film, be used for vegetables, fruit freshness preserving, prolong its freshness date, thereby overcome the defective of polyethylene preservative film.The utility model preservative film can be permeable selectively and ventilative, and the moisture content that evaporates in vegetables and the fruit is most of to permeate away, and the CO that respiration produces
2, ethene or the like then can only penetrate fraction, reduces the outer O of crisper simultaneously
2Enter and prevent that bacterium and germ from entering, crisper is at few O like this
2Many CO
2, have under certain humidity and the aseptic situation, can be effectively, freshness-retaining vegetable fruit for long periods.In addition, the utility model preservative film can be reused for a long time, avoids waste.By embodiment in detail the utility model is described in detail below in conjunction with accompanying drawing.
Accompanying drawing 1 is a kind of preservative film structural representation.
Embodiment 1
On 400 * 400 nonwoven, coat 15% polysulfones, 10% polyvinyl alcohol, the ternary polymer solution of 75%N-methyl pyrrolidone, be dipped in and take out drying in the water after 48 hours, coat 5% dimethyl silicone polymer (PDMS) gasoline solution again, solidify 72 hours film forming at 40 ℃, its thickness is 200 μ m, cut out a film of 200 * 200 down, with adhesive sticker it is sticked on the storage box of an opening of transparent hard plastic of 200 * 200 * 200, make crisper, the infiltration rate that records water vapour is: 3.45 * 10
-3Cm
3(STP)/cm
2.S.cmHg (its scope is 9 * 10
-4～1 * 10
-1), O
2Infiltration rate be: 1.13 * 10
-5Cm
3(STP)/cm
2.S.CmHg (its scope is 1 * 10
-4～1 * 10
-6), CO
2Infiltration rate be: 4.74 * 10
-4Cm
3(STP)/cm
2.S.cmHg (its scope is 1 * 10
-3～1 * 10
-5), the infiltration rate of ethene is: 5.65 * 10
-4Cm
3(STP)/cm
2.S.cmHg (its scope is 2 * 10
-3～9 * 10
-5).
Embodiment 2
On 800 * 800 nonwoven, coat 10% polysulfones, 18% polyvinyl alcohol, the ternary polymer solution of 72%N-methyl pyrrolidone, be dipped in and take out drying in the water after 4 hours, coat 8.5% poly 4-methylpene-1 acetone soln again, at 50 ℃ of film-formings, the time is 48 hours, and thickness is 250 μ m.Cut out next film of 400 * 400, stick on adhesive sticker on the storage box of an opening of transparent hard plastic of 200 * 200 * 200, make crisper.Recording water vapor permeation speed is 5 * 10
-4, O
2Infiltration rate 2.34 * 10
-6, CO
2Infiltration rate is 3.25 * 10
-5, the infiltration rate 4.57 * 10 of ethene
-5, unit is with example 1.
Claims (5)
1. natural complex fresh-keeping film, it is characterized in that: this natural complex fresh-keeping film is formed by stacking successively by layers of reinforcement (1), polymer material layer (2) and active separating layers of material (3).
2. according to the described natural complex fresh-keeping film of claim 1, it is characterized in that: described layers of reinforcement is nonwoven, weave cotton cloth, strengthen a kind of of paper; Polymer material layer is a kind of of polysulfones, polyether sulfone, polyacrylonitrile, Merlon, polyimides, PEI, carbonization polysulfones, cellulose; Active separating layers of material (3) be silicon rubber, poly 4-methylpene-1, gather a kind of of trimethyl silicane propine, silicone.
3. according to the described natural complex fresh-keeping film of claim 2, it is characterized in that: the preservative film periphery is stained with a circle adhesive sticker (4) or a double faced adhesive tape, adhesive, or melting adhered.
4. a crisper covers preservative film by storage box and constitutes, and it is characterized in that: this natural complex fresh-keeping film is formed by stacking successively by layers of reinforcement (1), polymer material layer (2) and active separating layers of material (3).
5. according to the described crisper of claim 4, it is characterized in that: described layers of reinforcement is nonwoven, weave cotton cloth, strengthen a kind of of paper; Polymer material layer is a kind of of polysulfones, polyether sulfone, polyacrylonitrile, Merlon, polyimides, PEI, carbonization polysulfones, cellulose; Active separating layers of material (3) be silicon rubber, poly 4-methylpene-1, gather a kind of of trimethyl silicane propine, silicone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98236858 CN2320032Y (en) | 1998-03-10 | 1998-03-10 | Composite fresh-keeping film and box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98236858 CN2320032Y (en) | 1998-03-10 | 1998-03-10 | Composite fresh-keeping film and box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2320032Y true CN2320032Y (en) | 1999-05-26 |
Family
ID=33984804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98236858 Expired - Fee Related CN2320032Y (en) | 1998-03-10 | 1998-03-10 | Composite fresh-keeping film and box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2320032Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101176482B (en) * | 2006-11-06 | 2010-12-08 | 甘肃省农业科学院 | Fabric nonwoven cloth fruit and vegetable preservative film series product |
| CN101913466A (en) * | 2010-05-27 | 2010-12-15 | 合肥美的荣事达电冰箱有限公司 | Preservative film assembly and preservation device with same |
| CN101473080B (en) * | 2006-06-22 | 2011-12-14 | 东洋纺织株式会社 | Polyimide nonwoven fabric and process for production thereof |
| CN114481634A (en) * | 2022-01-29 | 2022-05-13 | 贵州省材料产业技术研究院 | Degradable silicone rubber film and preparation method thereof |
-
1998
- 1998-03-10 CN CN 98236858 patent/CN2320032Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101473080B (en) * | 2006-06-22 | 2011-12-14 | 东洋纺织株式会社 | Polyimide nonwoven fabric and process for production thereof |
| CN101176482B (en) * | 2006-11-06 | 2010-12-08 | 甘肃省农业科学院 | Fabric nonwoven cloth fruit and vegetable preservative film series product |
| CN101913466A (en) * | 2010-05-27 | 2010-12-15 | 合肥美的荣事达电冰箱有限公司 | Preservative film assembly and preservation device with same |
| CN101913466B (en) * | 2010-05-27 | 2012-08-22 | 合肥美的荣事达电冰箱有限公司 | Preservative film assembly and preservation device with same |
| CN114481634A (en) * | 2022-01-29 | 2022-05-13 | 贵州省材料产业技术研究院 | Degradable silicone rubber film and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |