CN212244551U - Fruit and vegetable packaging film for preservation - Google Patents
Fruit and vegetable packaging film for preservation Download PDFInfo
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- CN212244551U CN212244551U CN202020133976.7U CN202020133976U CN212244551U CN 212244551 U CN212244551 U CN 212244551U CN 202020133976 U CN202020133976 U CN 202020133976U CN 212244551 U CN212244551 U CN 212244551U
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Abstract
The utility model discloses a fruit vegetables packaging film for keeping fresh, packaging film includes plastic film layer, paper layer and/or non-woven fabrics layer, is equipped with the bleeder vent on the plastic film layer, paper layer and/or non-woven fabrics layer centre gripping are between two plastic film layers, or set up the one side at the plastic film layer, the bleeder vent is zebra line form and sets up on the plastic film layer, and the bleeder vent on every zebra line is the rectangular array and distributes paper layer and/or non-woven fabrics layer are provided with ventilative micropore and/or the ventilative gap of fish scale form. The fruit and vegetable packaging film for preservation has the characteristics of simple structure, air permeability, moisture permeability, good drainage effect, adjustable air permeability and moisture permeability measurement and the like.
Description
Technical Field
The utility model relates to a plastic packaging film laminated structure technical field, concretely relates to a fruit vegetables packaging film for it is fresh-keeping.
Background
The principle of the method is that the oxygen concentration in a packaging bag is reduced and certain carbon dioxide concentration and humidity in the bag are maintained by means of the metabolism of fruits and vegetables, so that the fruits and vegetables are in a dormant state, the consumption of nutrients in the body and the evaporation of water are reduced, and the fresh-keeping period of the fruits and vegetables is prolonged.
However, the existing preservative film has certain defects, for example, the traditional preservative film has a low air and moisture permeability rate, is mainly used at a low temperature, or is only suitable for fruits and vegetables with low respiratory strength, and is easily damaged by low oxygen or high carbon dioxide for fruits and vegetables stored at normal temperature or fruits and vegetables with high respiratory strength. For another example, for fruits and vegetables with high respiratory strength, a highly-breathable microporous film or a method for punching holes in a preservative film appears in the market, and although the microporous film or the preservative film is adopted, the concentration of water vapor and carbon dioxide in a packaging bag can be reduced, the damage of the carbon dioxide to the fruits and vegetables is avoided, the necessary low-oxygen environment in the bag cannot be maintained, the fruits and vegetables cannot be in a dormant state, and the preservation effect is not obvious. In addition, another problem commonly existing in the existing fruit and vegetable preservative film base film is that the preservative film has no selectivity on oxygen and carbon dioxide permeability, so that the preservative film cannot form series products suitable for fruits and vegetables with different characteristics. For example, for packaging fruits and vegetables such as persimmons and sweet corns which need high carbon dioxide, because the preservative film can not provide proper oxygen and carbon dioxide permeation ratio, the high carbon dioxide concentration in the bag is difficult to achieve, or the required high carbon dioxide concentration is achieved, but the oxygen concentration in the environment is too low, and the oxygen-free respiration or low oxygen damage of the fruits and vegetables is caused; in addition, when the traditional preservative film is used for packaging carbon dioxide-sensitive fruits and vegetables such as pears and winter jujubes, the oxygen concentration in the bag is low and the carbon dioxide concentration is high, so that low-oxygen damage or carbon dioxide poisoning of the fruits and vegetables is caused.
In conclusion, the existing preservative film cannot meet the market demand, and further improvement is needed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the defect that exists among the prior art, provide a simple structure, ventilative, pass through wet, the drainage is effectual, and ventilative wet metering adjustable be used for fresh-keeping fruit vegetables packaging film that passes through.
In order to achieve the purpose, the technical scheme of the utility model is to provide a fruit vegetables packaging film for keeping fresh, packaging film includes plastic film layer paper layer and/or non-woven fabrics layer, is equipped with the bleeder vent on the plastic film layer.
In order to avoid the pollution of the paper or the non-woven fabric to the package as much as possible, the preferable technical proposal is that the paper layer and/or the non-woven fabric layer are clamped between two plastic film layers or arranged on one surface of the plastic film layers.
In order to facilitate the control of the distribution position of the air holes and the area of the air hole part on the packaging bag, the preferable technical scheme is that the air holes are arranged on the plastic film layer in a zebra line mode, and the air holes on each zebra line are distributed in a rectangular array.
In order to increase the transparent effect of the packaging bag and facilitate observation of packaged articles in the packaging bag, the paper layer and/or the non-woven fabric layer are clamped between two plastic film layers, or are arranged on one surface of the plastic film layer, which is provided with the zebra-shaped air holes
In order to increase the ventilation effect of the packaging bag and to be suitable for packaged articles with high ventilation quantity requirements, a further preferred technical scheme is that the paper layer and/or the non-woven fabric layer are/is provided with ventilation micropores and/or fish scale-shaped ventilation gaps.
In order to increase the ventilation effect of the packaging bag and to be suitable for packaged articles with large ventilation quantity requirements, the size of the micropores and/or the gaps is 20-80 micrometers.
In order to be able to produce the pores and/or the fish scale-shaped ventilation gaps in the paper layer and/or the nonwoven layer quickly and efficiently, it is further preferred that the pores and/or the gaps are produced by a laser perforator or a laser cutter.
In order to avoid the outside air from entering the packaging bag as far as possible or to facilitate the regulation and control of the gas exhausted from the packaging bag, the preferable technical scheme is that a cover film is attached to the part of the plastic film layer provided with the air holes, or a cover film is attached to the part of the paper layer and/or the non-woven fabric layer corresponding to the part of the plastic film layer provided with the air holes.
In order to facilitate the connection between the cover film and the plastic film, it is further preferred that the edge of the cover film is connected to the plastic film layer by hot pressing, or the edge of the cover film is bonded to the paper layer and/or the nonwoven layer by an adhesive.
In order to facilitate selection of whether the air holes in the plastic film or the plastic bag need to be opened or not, the preferable technical scheme is that adhesive sticker is coated on the surface of one side of the cover film, and the cover film is adhered to the part, provided with the air holes, of the plastic film layer through the adhesive sticker or is adhered to the part, corresponding to the air holes in the plastic film layer, of the paper layer and/or the non-woven fabric layer.
The utility model has the advantages and the beneficial effects that: the fruit and vegetable packaging film for preservation has the characteristics of simple structure, air permeability, moisture permeability, good drainage effect, adjustable air permeability and moisture permeability measurement and the like.
Because the paper and the non-woven fabric have certain air permeability, the paper or the non-woven fabric can be damaged after being soaked in water for a period of time, therefore, after water is accumulated in the packaging bag, the water can be gathered at the bottom of the packaging bag, the paper layer and/or the non-woven fabric layer arranged at the bottom of the packaging bag and the part of the plastic film layer provided with the air holes can be damaged, the water gathered at the bottom of the packaging bag can be discharged to the outside of the packaging bag from the part of the plastic film layer provided with the air holes and the damaged part of the paper layer and/or the non-woven fabric layer, the water-cut part of the paper layer and/or the non-woven fabric layer in the packaging bag can be blocked by the packed articles in the packaging bag after the water is discharged, and large-area air holes can, and the rest paper layer and/or the non-woven fabric layer which is not damaged by the accumulated water in the packaging bag can continuously keep a small amount of air permeability. Therefore, the moisture in the packaging bag can be discharged timely and quickly, and the air permeability of small dose in the packaging bag can be ensured. The area of the air holes on the packaging film can be adjusted or the air holes are opened or not through the arrangement of the cover film.
Drawings
FIG. 1 is a schematic cross-sectional view of one of the fruit and vegetable packaging films for fresh keeping of the present invention;
FIG. 2 is a schematic cross-sectional view of a second fruit and vegetable packaging film for fresh keeping according to the present invention;
FIG. 3 is a schematic view of the surface structure of one of the fruit and vegetable packaging films for keeping fresh of the present invention;
FIG. 4 is a schematic view of a paper layer or a non-woven fabric layer of the fruit and vegetable packaging film for preservation according to the present invention;
fig. 5 is a partially enlarged view of a portion a in fig. 4.
In the figure: 1. packaging film for fruits and vegetables; 2. a plastic film layer; 3. a paper layer; 4. air holes are formed; 5. zebra crossing; 6. air-permeable micropores; 7. a fish scale-like air-permeable slit; 8. and (7) covering the film.
Detailed Description
The following description will further describe embodiments of the present invention with reference to the accompanying drawings and examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
As shown in figures 1-4, the utility model relates to a fruit vegetables packaging film 1 for keeping fresh, the packaging film includes plastic film layer 2, paper layer 3 and/or non-woven fabrics layer, is equipped with bleeder vent 4 on plastic film layer 2.
In order to avoid the pollution of paper or non-woven fabrics to the packing material as far as possible, the utility model discloses preferred embodiment is, paper layer 3 and/or non-woven fabrics layer centre gripping are between two plastics rete 2, or set up the one side at plastics rete 2.
In order to facilitate the control of the distribution position of the air holes 4 and the area of the air holes 4 on the packaging bag, the utility model discloses a further preferred embodiment is, the air holes 4 are arranged on the plastic film layer 2 in the form of zebra stripes 5, and the air holes 4 on each zebra stripe 5 are distributed in a rectangular array
In order to facilitate the increase of the transparent effect of the packaging bag, be convenient for observe the inside packaged article of packaging bag, the utility model discloses further preferred embodiment still has, paper layer 3 and/or non-woven fabrics layer centre gripping are equipped with the bleeder vent 4 position of zebra stripes 5 form between two plastic film layer 2, or set up the one side that is equipped with zebra stripes 5 form bleeder vent 4 position on plastic film layer 2
In order to increase the ventilation effect of the packaging bag and to be suitable for packaged objects with a large ventilation demand, a further preferred embodiment of the present invention is that the paper layer 3 and/or the non-woven fabric layer are provided with ventilation pores 6 and/or fish scale-shaped ventilation slits 7.
In order to increase the ventilation effect of the packaging bag, so as to be suitable for packaged objects with large ventilation demand, the utility model discloses a further preferred embodiment still has, micropore 6 and/or gap 7 are 20~80 microns in size.
In order to be able to produce the pores 6 and/or the fish-scale gas-permeable slits 7 in the paper layer 3 and/or the nonwoven layer quickly and efficiently, a further preferred embodiment of the invention also provides that the pores 6 and/or the slits 7 are produced by laser perforation or laser cutting.
In order to avoid outside air to enter into the inside of wrapping bag as far as possible, or be convenient for regulate and control by the interior exhaust gas of wrapping bag, the utility model discloses further preferred embodiment still be attached to on the position that is equipped with bleeder vent 3 on the plastics rete 2 and have epiphragma 8, or be attached to on the paper layer 3 and/or the non-woven fabrics layer and the plastics rete 2 on the position that is equipped with bleeder vent 4 corresponding on having epiphragma 8.
In order to facilitate the connection between the cover film 8 and the plastic film, a further preferred embodiment of the invention also provides that the edge of the cover film 8 is connected to the plastic film layer 2 by means of hot pressing, or the edge of the cover film 8 is bonded to the paper layer 3 and/or the non-woven layer by means of an adhesive.
In order to facilitate the selection of whether the air holes on the plastic film or the plastic bag need to be opened, the utility model also has the preferable embodiment that the surface of one side of the cover film 8 is coated with the non-setting adhesive, and the cover film 8 is stuck on the part of the plastic film layer 2 provided with the air holes 4 through the non-setting adhesive or stuck on the part of the paper layer 3 and/or the non-woven fabric layer corresponding to the air holes 4 arranged on the plastic film layer 2.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the technical principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. The fruit and vegetable packaging film for preservation is characterized by comprising a plastic film layer, a paper layer and/or a non-woven fabric layer, wherein air holes are formed in the plastic film layer.
2. The fruit and vegetable packaging film for keeping fresh of claim 1, wherein the paper layer and/or the non-woven fabric layer is sandwiched between two plastic film layers or is disposed on one side of the plastic film layers.
3. The fruit and vegetable packaging film for keeping fresh as claimed in claim 2, wherein the air holes are arranged on the plastic film layer in a zebra line form, and the air holes on each zebra line are distributed in a rectangular array.
4. The fruit and vegetable packaging film for keeping fresh as claimed in claim 3, wherein the paper layer and/or the non-woven fabric layer is sandwiched between two plastic film layers, or is disposed on one side of the plastic film layer on which the zebra-shaped air holes are disposed.
5. The fruit and vegetable packaging film for keeping fresh as claimed in claim 4, wherein the paper layer and/or the non-woven fabric layer are provided with air-permeable micropores and/or fish scale-shaped air-permeable slits.
6. The fruit and vegetable packaging film for keeping fresh of claim 5, wherein the size of the micropores and/or gaps is 20-80 microns.
7. The fruit and vegetable packaging film for keeping fresh of claim 6, wherein the micro-holes and/or slits are processed by a laser puncher or a laser cutter.
8. The fruit and vegetable packaging film for keeping fresh as claimed in claim 7, wherein a cover film is attached to a portion of the plastic film layer where the ventilation holes are formed, or a cover film is attached to a portion of the paper layer and/or the non-woven fabric layer corresponding to a portion of the plastic film layer where the ventilation holes are formed.
9. The fruit and vegetable packaging film for keeping fresh of claim 8, wherein the edge of the cover film is connected with the plastic film layer by hot pressing, or the edge of the cover film is bonded with the paper layer and/or the non-woven fabric layer by an adhesive.
10. The fruit and vegetable packaging film for keeping fresh as claimed in claim 8, wherein the surface of one side of the cover film is coated with a non-setting adhesive, and the cover film is adhered to the portion of the plastic film layer provided with the ventilation holes through the non-setting adhesive or adhered to the portion of the paper layer and/or the non-woven fabric layer corresponding to the portion of the plastic film layer provided with the ventilation holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020133976.7U CN212244551U (en) | 2020-01-20 | 2020-01-20 | Fruit and vegetable packaging film for preservation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020133976.7U CN212244551U (en) | 2020-01-20 | 2020-01-20 | Fruit and vegetable packaging film for preservation |
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| Publication Number | Publication Date |
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| CN212244551U true CN212244551U (en) | 2020-12-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020133976.7U Active CN212244551U (en) | 2020-01-20 | 2020-01-20 | Fruit and vegetable packaging film for preservation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115140432A (en) * | 2022-06-27 | 2022-10-04 | 昊辰（无锡）塑业有限公司 | Novel degradable preservative film |
-
2020
- 2020-01-20 CN CN202020133976.7U patent/CN212244551U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115140432A (en) * | 2022-06-27 | 2022-10-04 | 昊辰（无锡）塑业有限公司 | Novel degradable preservative film |
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