CN220947062U - Dampproofing plastic film of high separation nature - Google Patents
Dampproofing plastic film of high separation nature Download PDFInfo
- Publication number
- CN220947062U CN220947062U CN202322497479.1U CN202322497479U CN220947062U CN 220947062 U CN220947062 U CN 220947062U CN 202322497479 U CN202322497479 U CN 202322497479U CN 220947062 U CN220947062 U CN 220947062U
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- Prior art keywords
- layer
- barrier
- moisture
- plastic film
- dampproof
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- 229920006255 plastic film Polymers 0.000 title claims abstract description 37
- 239000002985 plastic film Substances 0.000 title claims abstract description 37
- 238000000926 separation method Methods 0.000 title description 2
- 239000010410 layer Substances 0.000 claims abstract description 61
- 230000004888 barrier function Effects 0.000 claims abstract description 58
- 239000002344 surface layer Substances 0.000 claims abstract description 31
- 239000011241 protective layer Substances 0.000 claims abstract description 25
- 239000011248 coating agent Substances 0.000 claims abstract description 18
- 238000000576 coating method Methods 0.000 claims abstract description 18
- 230000002209 hydrophobic effect Effects 0.000 claims abstract description 12
- 229920006284 nylon film Polymers 0.000 claims description 8
- 229920006267 polyester film Polymers 0.000 claims description 7
- 238000009423 ventilation Methods 0.000 claims description 4
- 239000011358 absorbing material Substances 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 17
- 238000004806 packaging method and process Methods 0.000 abstract description 8
- 238000010521 absorption reaction Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 2
- 230000009545 invasion Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 8
- 239000004372 Polyvinyl alcohol Substances 0.000 description 7
- 229920002451 polyvinyl alcohol Polymers 0.000 description 7
- -1 polyethylene Polymers 0.000 description 4
- 239000004698 Polyethylene Substances 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000002274 desiccant Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Landscapes
- Laminated Bodies (AREA)
- Wrappers (AREA)
Abstract
The utility model relates to the field of plastic films, in particular to a high-barrier dampproof plastic film. The utility model aims to provide a waterproof coating with excellent barrier property and capable of preventing external water vapor from invading; and meanwhile, the moisture in the package is adsorbed, so that the moisture-absorbing and dampproof high-barrier dampproof plastic film is achieved. A high-barrier dampproof plastic film comprises an inner surface layer, a dampproof layer, a barrier layer, an outer protective layer and a hydrophobic coating. The utility model achieves the advantages of excellent gas and moisture resistance and other barrier properties, prevents the invasion of external water vapor, protects the packaging products, and simultaneously adsorbs the water vapor in the packaging to achieve the effects of moisture absorption and moisture resistance.
Description
Technical Field
The utility model relates to the field of plastic films, in particular to a high-barrier dampproof plastic film.
Background
Plastic films are films made of polyvinyl chloride, polyethylene, polypropylene, polystyrene and other resins, are used for packaging and as film layers, and are widely applied to the fields of food, medicine, chemical industry and the like.
After the plastic film is used for carrying out external packaging on the product, if the barrier property of the plastic film is poor, external water vapor can invade the plastic film to damage the packaged product; meanwhile, if the humidity of the packaged product is high or the interior of the plastic film contains moisture, the product is in a moist environment, and after a long time, the packaged product is very easy to mildew, and a desiccant is required to be placed in the package independently, so that the packaging is very troublesome; therefore, there is a need to develop a barrier with excellent barrier properties against the intrusion of external moisture; and meanwhile, the moisture in the package is adsorbed, so that the moisture-absorbing and dampproof high-barrier dampproof plastic film is achieved.
Disclosure of utility model
In order to overcome the defect that the plastic film has poor barrier property, external water vapor can invade the plastic film to damage a packaged product; meanwhile, when the humidity of the packaged product is high or the plastic film contains moisture, the product is in a moist environment, and after a long time, the packaged product is extremely easy to mildew; and meanwhile, the moisture in the package is adsorbed, so that the moisture-absorbing and dampproof high-barrier dampproof plastic film is achieved.
The utility model is achieved by the following specific technical means:
A high-barrier dampproof plastic film comprises an inner surface layer, a dampproof layer, a barrier layer, an outer protective layer and a hydrophobic coating; a barrier layer is arranged on one side of the inner surface layer and fixedly bonded with the inner surface layer; a moisture-proof layer is also arranged between the inner surface layer and the barrier layer, and is made of a hygroscopic material and fixedly filled between the inner surface layer and the barrier layer; an outer protective layer is arranged on one side, away from the moisture-proof layer, of the barrier layer, and the outer protective layer is fixedly bonded with the barrier layer; the side, far away from the barrier layer, of the outer protective layer is uniformly coated with a hydrophobic coating; the plastic film is provided with an inner surface layer, a moisture-proof layer, a barrier layer, an outer protective layer and a hydrophobic coating from the inner side to the outer side.
Further, the inner surface layer is a nylon film; the nylon film is a very tough film, has good tensile strength and tensile strength, also has good wear resistance and puncture resistance, but has poor barrier property to water vapor and high moisture absorption and permeability, so that the water vapor in the package can be absorbed by the moisture-proof layer through the nylon film.
Further, a plurality of ventilation through holes which penetrate through the inner surface layer and are communicated with the moisture-proof layer are uniformly formed in the inner surface layer; so that the water vapor can be absorbed by the hygroscopic material filled in the moisture-proof layer through the ventilation through holes.
Further, the barrier layer is a PVA coated high-barrier plastic film; the PVA coated high-barrier plastic film is a film with extremely high barrier property, which is formed by using polyethylene plastic as a base material and coating modified polyvinyl alcohol water-soluble liquid on the base material, has excellent barrier property to oxygen and water vapor, and can greatly increase the barrier property of the film.
Further, the outer protective layer is a polyester film; the polyester film has excellent mechanical properties, high rigidity and toughness, puncture resistance and friction resistance; meanwhile, the composite film has good air tightness, barrier property, chemical resistance and oil resistance, and is one of the commonly used barrier composite film substrates.
Compared with the prior art, the utility model has the following beneficial effects:
The utility model achieves the advantages of excellent gas and moisture resistance and other barrier properties, prevents the invasion of external water vapor, protects the packaging products, and simultaneously adsorbs the water vapor in the packaging to achieve the effects of moisture absorption and moisture resistance.
Drawings
Fig. 1 is a schematic cross-sectional view of the present utility model.
The marks in the drawings are: 1-inner surface layer, 2-moisture-proof layer, 3-barrier layer, 4-outer protective layer and 5-hydrophobic coating.
Detailed Description
The utility model is further described below with reference to the accompanying drawings:
examples
A high-barrier dampproof plastic film, as shown in figure 1, comprises an inner surface layer 1, a dampproof layer 2, a barrier layer 3, an outer protective layer 4 and a hydrophobic coating 5; a barrier layer 3 is arranged on one side of the inner surface layer 1, and the barrier layer 3 is fixedly adhered with the inner surface layer 1; a moisture-proof layer 2 is further arranged between the inner surface layer 1 and the barrier layer 3, and the moisture-proof layer 2 is made of a hygroscopic material and is fixedly filled between the inner surface layer 1 and the barrier layer 3; an outer protective layer 4 is arranged on one side, far away from the moisture-proof layer 2, of the barrier layer 3, and the outer protective layer 4 is fixedly adhered with the barrier layer 3; the side, far away from the barrier layer 3, of the outer protective layer 4 is uniformly coated with a hydrophobic coating 5; the plastic film is provided with an inner surface layer 1, a moisture-proof layer 2, a barrier layer 3, an outer protective layer 4 and a hydrophobic coating 5 from the inside to the outside.
The inner surface layer 1 is a nylon film; a plurality of ventilation through holes which penetrate through the inner surface layer 1 and are communicated with the moisture-proof layer 2 are uniformly formed in the inner surface layer 1; the barrier layer 3 is a PVA coated high-barrier plastic film; the outer protective layer 4 is a polyester film.
Working principle:
The plastic film is sequentially provided with an inner surface layer 1, a moisture-proof layer 2, a barrier layer 3, an outer protective layer 4 and a hydrophobic coating 5 from inside to outside; the inner surface layer 1 is a nylon film, the nylon film has good tensile strength and tensile strength, also has good wear resistance and puncture resistance, can prevent the plastic film from being scratched by the friction of the inner packaging product, has poor barrier property to water vapor and high moisture absorption and permeability, and can enable the internal water vapor to be absorbed by the moisture absorption material filled in the moisture-proof layer 2 outside the inner surface layer 1 through the nylon film; the barrier layer 3 is arranged on the outer side of the moisture-proof layer 2, the barrier layer 3 is a PVA coating high-barrier plastic film, the PVA coating high-barrier plastic film is a film which is formed by taking polyethylene plastic as a base material and coating modified polyvinyl alcohol water-soluble liquid on the base material and has extremely high barrier property, has excellent barrier property to oxygen and water vapor, can greatly increase the barrier property of the film and prevent external water vapor from invading; an outer protective layer 4 is arranged on the outer side of the barrier layer 3, the outer protective layer 4 is a polyester film, and the polyester film has excellent mechanical property, high rigidity and toughness, puncture resistance and friction resistance and prevents external objects from scratching and penetrating through the plastic film; meanwhile, the polyester film has good air tightness, chemical resistance and oil resistance; meanwhile, the outer side of the outer protective layer 4 is uniformly coated with a hydrophobic coating 5, so that external water drops and water vapor can be prevented from being adsorbed on the outer protective layer 4.
While the present disclosure has been described in detail with reference to exemplary embodiments, the present disclosure is not limited thereto, and it will be apparent to those skilled in the art that various modifications and changes may be made thereto without departing from the scope of the present disclosure.
Claims (5)
1. The high-barrier dampproof plastic film is characterized by comprising an inner surface layer (1), a dampproof layer (2), a barrier layer (3), an outer protective layer (4) and a hydrophobic coating (5); a barrier layer (3) is arranged on one side of the inner surface layer (1), and the barrier layer (3) is fixedly adhered to the inner surface layer (1); a moisture-proof layer (2) is further arranged between the inner surface layer (1) and the barrier layer (3), and the moisture-proof layer (2) is made of a moisture-absorbing material and is fixedly filled between the inner surface layer (1) and the barrier layer (3); an outer protective layer (4) is arranged on one side, far away from the moisture-proof layer (2), of the barrier layer (3), and the outer protective layer (4) is fixedly bonded with the barrier layer (3); the side, far away from the barrier layer (3), of the outer protective layer (4) is uniformly coated with a hydrophobic coating (5); the plastic film is provided with an inner surface layer (1), a moisture-proof layer (2), a barrier layer (3), an outer protective layer (4) and a hydrophobic coating (5) from the inner side to the outer side.
2. A high barrier moisture barrier plastic film as claimed in claim 1 wherein the inner skin layer (1) is a nylon film.
3. The high-barrier moisture-proof plastic film as claimed in claim 1, wherein a plurality of ventilation through holes which penetrate through the inner surface layer (1) and are communicated with the moisture-proof layer (2) are uniformly formed on the inner surface layer (1).
4. A high barrier moisture barrier plastic film according to claim 1, wherein the barrier layer (3) is a PVA coated high barrier plastic film.
5. A high barrier moisture barrier plastic film according to claim 1, wherein the outer protective layer (4) is a polyester film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322497479.1U CN220947062U (en) | 2023-09-14 | 2023-09-14 | Dampproofing plastic film of high separation nature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322497479.1U CN220947062U (en) | 2023-09-14 | 2023-09-14 | Dampproofing plastic film of high separation nature |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220947062U true CN220947062U (en) | 2024-05-14 |
Family
ID=90975705
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322497479.1U Active CN220947062U (en) | 2023-09-14 | 2023-09-14 | Dampproofing plastic film of high separation nature |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220947062U (en) |
-
2023
- 2023-09-14 CN CN202322497479.1U patent/CN220947062U/en active Active
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