CN220450082U - BOPP antifog film with water vapor antifogging function - Google Patents
BOPP antifog film with water vapor antifogging function Download PDFInfo
- Publication number
- CN220450082U CN220450082U CN202321754367.3U CN202321754367U CN220450082U CN 220450082 U CN220450082 U CN 220450082U CN 202321754367 U CN202321754367 U CN 202321754367U CN 220450082 U CN220450082 U CN 220450082U
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- China
- Prior art keywords
- layer
- film
- bopp
- hydrophobic layer
- antifogging
- Prior art date
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 45
- 229920006378 biaxially oriented polypropylene Polymers 0.000 title claims abstract description 23
- 239000011127 biaxially oriented polypropylene Substances 0.000 title claims abstract description 23
- 239000010410 layer Substances 0.000 claims abstract description 67
- 230000002209 hydrophobic effect Effects 0.000 claims abstract description 36
- 239000000758 substrate Substances 0.000 claims abstract description 26
- 239000012790 adhesive layer Substances 0.000 claims abstract description 12
- 238000009833 condensation Methods 0.000 claims abstract description 8
- 230000005494 condensation Effects 0.000 claims abstract description 8
- 239000012528 membrane Substances 0.000 claims abstract 2
- 239000011324 bead Substances 0.000 claims description 19
- 230000002940 repellent Effects 0.000 claims description 8
- 239000005871 repellent Substances 0.000 claims description 8
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 6
- 229910052731 fluorine Inorganic materials 0.000 claims description 6
- 239000011737 fluorine Substances 0.000 claims description 6
- 239000011347 resin Substances 0.000 claims description 6
- 229920005989 resin Polymers 0.000 claims description 6
- -1 polypropylene Polymers 0.000 claims description 5
- 239000004743 Polypropylene Substances 0.000 claims description 4
- 229920001155 polypropylene Polymers 0.000 claims description 4
- 239000000443 aerosol Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000002390 adhesive tape Substances 0.000 claims 2
- 238000000034 method Methods 0.000 abstract description 2
- 238000004026 adhesive bonding Methods 0.000 abstract 1
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 239000004576 sand Substances 0.000 abstract 1
- 239000000779 smoke Substances 0.000 abstract 1
- 238000009423 ventilation Methods 0.000 description 7
- 235000019504 cigarettes Nutrition 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 238000005457 optimization Methods 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
Landscapes
- Laminated Bodies (AREA)
Abstract
The utility model relates to the technical field of antifogging films, and discloses a BOPP antifogging film with the function of preventing water vapor from fogging, which structurally comprises a hydrophobic layer adhered to the upper end through a second adhesive layer, and a convex strip which is arranged on the upper surface of the hydrophobic layer and is arc-shaped and used for guiding water vapor to flow out after condensation, and the BOPP antifogging film has the beneficial effects that: through the hydrophobic layer through rectangle frame formula second gluing layer adhesion that adds in the membrane outside, when moisture contacted the face of congealing on the hydrophobic layer for the hydrone congeals into the hydropearl, the hydropearl can be through the sand grip guide outflow hydrophobic layer that the arc set up, and hydrophobic layer and substrate layer form the space because of rectangle frame formula bonding method two, then make substrate layer surface and external environment heat exchange through bleeder vent on the hydrophobic layer, can let substrate layer surface can not form the water smoke face because of the difference in temperature through this setting.
Description
Technical Field
The utility model relates to the technical field of antifogging films, in particular to a BOPP antifogging film with the function of preventing water vapor from fogging.
Background
BOPP films are generally multilayer co-extrusion films, and are prepared by co-extrusion of polypropylene particles to form sheets and stretching the sheets in longitudinal and transverse directions. Because of the orientation of the stretching molecules, the film has better physical stability, mechanical strength and air tightness, higher transparency and glossiness, toughness and wear resistance, is a printing film with wide application, generally has the thickness of 20-40 mu m and the most widely applied thickness of 20 mu m. The biaxially oriented polypropylene film has the main defect of poor heat sealing property, so the biaxially oriented polypropylene film is generally used as an outer film of a composite film, such as a film with ideal moisture resistance, transparency, strength, stiffness and printability after being compounded with a polyethylene film, and is suitable for containing dry foods. Because the biaxially oriented polypropylene film has nonpolar surface, high crystallinity and low surface free energy, the biaxially oriented polypropylene film has poor printing performance and poor adhesion to ink and adhesives, and surface treatment is required before printing and compounding.
When the film is used in a package such as a book or a cigarette case, high-density water molecules adhere to the surface of the film in a high-humidity environment, so that water vapor permeates into the book or the cigarette, and the book and the cigarette are affected with damp, and therefore, a BOPP antifogging film with the function of preventing water vapor from fogging is needed.
Disclosure of Invention
1. Technical problem to be solved by the utility model
Aiming at the problems in the prior art, the utility model aims to provide a BOPP antifogging film with the function of preventing water vapor from fogging, which has the function of reducing the hydrophilicity of the surface through a water repellent coated on a water repellent layer, so that water vapor can be condensed into water drops to be guided to flow out through arc convex strips when the water vapor is attached to the surface, thereby solving the problem that the prior film is not provided with
2. Technical proposal
In order to solve the problems, the utility model adopts the following technical scheme.
The BOPP antifog film comprises a double-sided adhesive layer, a release film and a substrate layer adhered to one end of the double-sided adhesive layer, wherein the substrate layer comprises a hydrophobic layer adhered to the upper end through a second adhesive layer, and a convex strip which is arranged on the upper surface of the hydrophobic layer and is used for guiding water vapor to flow out after being arc-shaped.
As optimization, the hydrophobic layer comprises a bead surface which is arranged on two sides of the raised line and smeared with a hydrophobic agent to coagulate water vapor molecules.
Preferably, the release film comprises a projection directly connected to one end of the release film body and allowing the film body to be rapidly torn off.
Through the technical scheme, the protruding part is particularly used for being adhered to articles such as books or cigarettes which are prevented from being wet by water vapor when the films are needed, and the lower end of the double-sided adhesive layer can be adhered to the surfaces of the articles only by tearing the release film through the protruding part.
As an optimization, the base material layer adopts a BOPP film formed by polypropylene coextrusion.
As optimization, the water repellent coated on the surface of the condensation bead surface specifically uses colorless organic fluorine resin to reduce the hydrophilicity of the condensation bead surface so as to enable the aerosol condensation bead.
According to the technical scheme, the organic fluorine resin is partially smeared on the hydrophobic layer, so that the hydrophilicity of the surface is reduced, and the bead-condensing surface is formed.
As optimization, one side of the hydrophobic layer is provided with a ventilation hole for heat exchange between the substrate layer and the external environment, and a ventilation waterproof film is arranged in the ventilation hole.
Through the technical scheme, the breathable waterproof film in the air holes can prevent water vapor from entering the gaps to contact the surface of the substrate layer.
Through the technical scheme, the air holes are used for heat exchange between the substrate layer and the external environment.
3. Advantageous effects
Compared with the prior art, the utility model has the advantages that: according to the BOPP antifogging film with the antifogging function, the hydrophobic layer adhered through the rectangular frame type second adhesive layer is additionally arranged on the outer side of the film body, when moisture contacts with the bead condensation surface on the hydrophobic layer, water molecules are condensed into water beads, the water beads can flow out of the hydrophobic layer through the convex strips arranged in an arc shape in a guiding mode, gaps are formed between the hydrophobic layer and the substrate layer due to the rectangular frame type bonding method, the surface of the substrate layer is enabled to exchange heat with the external environment through the air holes in the hydrophobic layer, and the surface of the substrate layer can not form a water fog surface due to temperature difference through the arrangement.
Drawings
FIG. 1 is a schematic illustration of a BOPP antifogging film with antifogging function according to the present utility model;
FIG. 2 is a schematic view of the structure of the hydrophobic layer and the inside of the substrate layer according to the present utility model;
FIG. 3 is a schematic diagram of the structure of FIG. 2A;
fig. 4 is a schematic view of the structure of the plane of the antifogging film of the present utility model.
Reference numerals in the drawings: the adhesive comprises a double-sided adhesive layer-1, a release film-2, a substrate layer-3, a hydrophobic layer-4, raised strips-31, a bead surface-71, a protruding part-51, an air hole-322 and a second adhesive layer-7.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Examples
Referring to fig. 1-4, a BOPP antifogging film with water vapor antifogging function structurally comprises a double-sided adhesive layer 1, a release film 2, and a substrate layer 3 adhered to one end of the double-sided adhesive layer 1, wherein the substrate layer 3 comprises a hydrophobic layer 4 adhered to the upper end through a second adhesive layer 7, and a convex strip 31 arranged on the upper surface of the hydrophobic layer 4 and used for guiding water vapor to flow out after being in an arc shape.
In this embodiment, the hydrophobic layer 4 includes bead surfaces 71 disposed on both sides of the protruding strip 31 and coated with a water repellent to condense water vapor molecules.
In this embodiment, the release film 2 includes a protrusion 51 directly connected to one end of the quick-release film body.
The above-mentioned protruding portion 51 is particularly used for adhering the articles such as books or cigarettes, which are prevented from being wet by moisture, to the surface of the articles by tearing the release film 2 through the protruding portion 51, and the lower end of the double-sided adhesive layer 1 is adhered to the surface of the articles.
In this example, the base material layer 3 was a BOPP film formed by coextrusion of polypropylene.
In this embodiment, a colorless organic fluorine resin is specifically used as the water repellent agent applied to the surface of the bead face 71 to reduce the hydrophilicity of the bead face 71 so that the aerosol beads are formed.
The above-mentioned surface of the condensed beads 71 is formed by partially coating the water repellent layer 4 with an organic fluororesin to reduce the hydrophilicity of the surface, and the condensed beads are drained outside the film through the arcuate ridges 31.
In this embodiment, one side of the hydrophobic layer 4 is provided with a ventilation hole 322 for heat exchange between the substrate layer 3 and the external environment, and a ventilation waterproof film is provided in the ventilation hole 322.
When the breathable waterproof film enables air to enter the gaps between the hydrophobic layer 4 and the substrate layer 3, water vapor cannot enter the gaps to contact the surface of the substrate layer 3.
The ventilation holes 322 are used for heat exchange between the substrate layer 3 and the external environment, so that the substrate layer 3 cannot adhere excessive moisture to the hydrophobic layer 4 adhered to the outside due to the difference between the internal temperature and the external temperature.
When water vapor contacts the surface of the hydrophobic layer 4, the water condensation surface 71 of the organic fluorine resin is coated on the surface of the hydrophobic layer 4, the hydrophilicity of the water condensation surface 71 is reduced under the action of the organic fluorine resin, so that water molecules cannot adhere to the surface when the water vapor contacts the surface, the water molecules are condensed into water beads through the guiding action of the raised strips 31, the water beads are discharged out of the surface of the film, and the air holes 322 are formed in the hydrophobic layer 4, because the hydrophobic layer 4 is specifically adhered to the substrate layer 3 by the second adhesive layer 7 of a rectangular frame type, a gap is formed between the hydrophobic layer 4 and the substrate layer 3, and therefore, the surface of the substrate layer 3 can exchange heat with the external environment through the air permeable waterproof film in the air holes 322, the temperature difference between the film and the external environment is reduced, and the surface of the hydrophobic layer 4 is prevented from being easily formed into water mist due to the temperature difference.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "connected," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. The utility model provides a BOPP antifog film that possesses antifog of steam, its structure includes double faced adhesive tape layer (1), from membrane (2), adhesion at substrate layer (3) of double faced adhesive tape layer (1) one end, its characterized in that: the substrate layer (3) comprises a hydrophobic layer (4) adhered to the upper end through a second adhesive layer (7), and a convex strip (31) which is arranged on the upper surface of the hydrophobic layer (4) and is arc-shaped and used for guiding water to flow out after condensation of water;
the hydrophobic layer (4) comprises a bead surface (71) which is arranged on two sides of the raised line (31) and smeared with a water repellent to condense water vapor molecules;
the water repellent coated on the surface of the bead surface (71) specifically uses colorless organic fluorine resin to reduce the hydrophilicity of the bead surface (71) so as to enable the aerosol to be coagulated.
2. The BOPP antifogging film with moisture antifogging function of claim 1, wherein: the release film (2) comprises a protruding part (51) which is directly connected to one end and can be used for rapidly tearing off the film body.
3. The BOPP antifogging film with moisture antifogging function of claim 1, wherein: the base material layer (3) is a BOPP film formed by polypropylene coextrusion.
4. The BOPP antifogging film with moisture antifogging function of claim 1, wherein: one side of the hydrophobic layer (4) is provided with an air vent (322) for heat exchange between the substrate layer (3) and the external environment, and an air-permeable waterproof film is arranged in the air vent (322).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321754367.3U CN220450082U (en) | 2023-07-06 | 2023-07-06 | BOPP antifog film with water vapor antifogging function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321754367.3U CN220450082U (en) | 2023-07-06 | 2023-07-06 | BOPP antifog film with water vapor antifogging function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220450082U true CN220450082U (en) | 2024-02-06 |
Family
ID=89735066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321754367.3U Active CN220450082U (en) | 2023-07-06 | 2023-07-06 | BOPP antifog film with water vapor antifogging function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220450082U (en) |
-
2023
- 2023-07-06 CN CN202321754367.3U patent/CN220450082U/en active Active
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