CN221187736U - Biaxially oriented nylon film for liquid external package - Google Patents
Biaxially oriented nylon film for liquid external package Download PDFInfo
- Publication number
- CN221187736U CN221187736U CN202322836588.1U CN202322836588U CN221187736U CN 221187736 U CN221187736 U CN 221187736U CN 202322836588 U CN202322836588 U CN 202322836588U CN 221187736 U CN221187736 U CN 221187736U
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- Prior art keywords
- layer
- liquid
- biaxially oriented
- high barrier
- nylon film
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- 239000007788 liquid Substances 0.000 title claims abstract description 31
- 229920006284 nylon film Polymers 0.000 title claims abstract description 17
- 239000010410 layer Substances 0.000 claims abstract description 140
- 230000004888 barrier function Effects 0.000 claims abstract description 38
- 239000012790 adhesive layer Substances 0.000 claims abstract description 22
- 230000002209 hydrophobic effect Effects 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 claims abstract description 16
- 239000000758 substrate Substances 0.000 claims abstract description 15
- 238000004806 packaging method and process Methods 0.000 claims abstract description 12
- 239000004677 Nylon Substances 0.000 claims abstract description 9
- 229920001778 nylon Polymers 0.000 claims abstract description 9
- 238000000926 separation method Methods 0.000 claims abstract description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 14
- 239000011888 foil Substances 0.000 claims description 14
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 13
- 230000000844 anti-bacterial effect Effects 0.000 claims description 11
- 229920000219 Ethylene vinyl alcohol Polymers 0.000 claims description 6
- 239000004715 ethylene vinyl alcohol Substances 0.000 claims description 6
- UFRKOOWSQGXVKV-UHFFFAOYSA-N ethene;ethenol Chemical compound C=C.OC=C UFRKOOWSQGXVKV-UHFFFAOYSA-N 0.000 claims description 5
- 238000001125 extrusion Methods 0.000 claims description 4
- 239000002981 blocking agent Substances 0.000 claims description 2
- 238000012856 packing Methods 0.000 claims 1
- 239000002344 surface layer Substances 0.000 abstract description 17
- 239000007789 gas Substances 0.000 abstract description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 7
- 229910052760 oxygen Inorganic materials 0.000 abstract description 7
- 239000001301 oxygen Substances 0.000 abstract description 7
- 238000010521 absorption reaction Methods 0.000 abstract description 6
- 241000894006 Bacteria Species 0.000 abstract description 4
- 238000009395 breeding Methods 0.000 abstract description 4
- 230000001488 breeding effect Effects 0.000 abstract description 4
- 230000003115 biocidal effect Effects 0.000 abstract 1
- 239000011521 glass Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 229920006233 biaxially oriented polyamide Polymers 0.000 description 2
- UBAZGMLMVVQSCD-UHFFFAOYSA-N carbon dioxide;molecular oxygen Chemical compound O=O.O=C=O UBAZGMLMVVQSCD-UHFFFAOYSA-N 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical class [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 229920002292 Nylon 6 Polymers 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910002090 carbon oxide Inorganic materials 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
- 238000010276 construction Methods 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 238000003851 corona treatment Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000004100 electronic packaging Methods 0.000 description 1
- RZXDTJIXPSCHCI-UHFFFAOYSA-N hexa-1,5-diene-2,5-diol Chemical compound OC(=C)CCC(O)=C RZXDTJIXPSCHCI-UHFFFAOYSA-N 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 235000019645 odor Nutrition 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000011253 protective coating Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
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- Laminated Bodies (AREA)
Abstract
The utility model provides a biaxially oriented nylon film for liquid external packaging, which comprises a substrate layer, wherein an upper layer and a lower layer of the substrate layer are provided with high-barrier surface layers, the upper layer of the high-barrier surface layer is provided with a hydrophobic layer, and the lower layer of the high-barrier surface layer is connected with an inner layer through a first adhesive layer; according to the utility model, the high-barrier surface layer is added, so that the barrier property of the film is improved, the problem that liquid volatilizes or oxygen enters to oxidize the liquid is avoided, and the moisture absorption of the substrate layer is reduced by adding the hydrophobic layer, so that the quality problems of nylon material deformation and the like caused by moisture absorption are avoided; through increasing the inlayer, better improvement film self gas tightness improves the separation nature, through antibiotic layer and liquid direct contact better stopped the breeding of bacterium.
Description
Technical Field
The utility model relates to the technical field of nylon films, in particular to a biaxially oriented nylon film for liquid outer packaging.
Background
The biaxially oriented nylon film, namely the BOPA film, is made from nylon 6 serving as a raw material by melt extrusion casting on special equipment and then stretching longitudinally, transversely or simultaneously; the BOPA film has excellent printability; outstanding tensile strength, impact strength and puncture strength, excellent high barrier to gases and odors; chemical resistance of grease-proof carbon oxides; the extremely wide applicable temperature range is-60 ℃ to 150 ℃; good transparency and gloss; therefore, the packaging material is widely applied to the fields of food packaging, daily chemical packaging, medicine bubble caps, electronic packaging, construction chemical industry and the like;
In the prior art, through searching, the utility model patent with the patent publication number of CN104129133A provides a paper-plastic composite film for liquid packaging and a manufacturing method thereof, and solves the problems that most of the existing liquid packaging adopts a form of containing liquid in a glass bottle, and the material cost is high, the production cost is high and the liquid packaging is easy to crush. The anti-seepage printing paper comprises a protective coating, a printing layer, paper, an anti-seepage coating, a first polyurethane adhesive layer, a nylon film, a second polyurethane adhesive layer and a polyethylene film, wherein the printing layer covers the upper surface of the paper;
In view of the above prior art, the inventors found that the barrier properties of the film itself are generally not good for gas, the packaged liquid is easily volatilized, or the entering oxygen is oxidized during actual use or application.
Disclosure of utility model
In order to solve the problems that the barrier property of the film in the prior art is common, gas cannot be well blocked, packaged liquid is easy to volatilize or the packaged liquid is oxidized by entered oxygen, the utility model provides a biaxially oriented nylon film for liquid external packaging;
The biaxially oriented nylon film for liquid external packaging provided by the utility model adopts the following technical scheme:
The biaxially oriented nylon film for liquid external packaging comprises a substrate layer, wherein an upper layer and a lower layer of the substrate layer are provided with high-barrier surface layers, the upper layer of the high-barrier surface layer is provided with a hydrophobic layer, and the lower layer of the high-barrier surface layer is connected with an inner layer through a first adhesive layer;
Further, the high-barrier surface layer comprises a first high-barrier layer and a second high-barrier layer, wherein the first high-barrier layer is co-extruded and compounded on the upper layer of the substrate layer, and the second high-barrier layer is co-extruded and compounded on the lower layer of the substrate layer;
Further, the upper layer of the first high barrier layer is co-extrusion compounded with a hydrophobic layer;
Further, the inner layer is sequentially provided with an aluminum foil layer, a second adhesive layer and an antibacterial layer from top to bottom, the lower layer of the second high barrier layer is connected with the aluminum foil layer through the first adhesive layer, and the lower layer of the aluminum foil layer is connected with the antibacterial layer through the second adhesive layer;
Further, the first high barrier layer and the second high barrier layer are made of EVOH (ethylene vinyl alcohol) materials;
Furthermore, the hydrophobic layer is made of nylon materials added with anti-adhesion agents, so that a gully-shaped structure with roughness is formed on the surface of the hydrophobic layer;
in summary, the beneficial effects of the utility model are as follows:
Aiming at the problems that the film in the prior art cannot well block gas, the packaged liquid is easy to volatilize or the packaged liquid is oxidized by the entered oxygen, the high-barrier surface layer is added, and the film has excellent gas barrier property by using the high-barrier surface layer made of EVOH, so that the permeation of oxygen, carbon dioxide and other gases can be effectively blocked; meanwhile, the transparent glass has good transparency, glossiness, mechanical strength and thermal stability; meanwhile, the aluminum foil layer is added, so that light rays can be shielded, the entry of oxygen can be better isolated, and the barrier property of the film is improved to the greatest extent; by adding the antibacterial layer, the antibacterial layer is used as an inner layer to be in direct contact with the packaged liquid, so that bacteria breeding is better stopped.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present utility model;
FIG. 2 is a schematic diagram of the overall cross-sectional structure of the present utility model;
FIG. 3 is a schematic view of the overall cross-sectional structure of the outer layer of the present utility model;
FIG. 4 is a schematic view of the overall cross-sectional structure of the inner layer of the present utility model.
The following figures are shown: 1-substrate layer, 21-first high barrier layer, 22-second high barrier layer, 3-hydrophobic layer, 4-aluminum foil layer, 5-antibacterial layer, 61-first adhesive layer, 62-second adhesive layer.
Detailed Description
The utility model is described in further detail below with reference to fig. 1-4:
The embodiment of the utility model discloses a biaxially oriented nylon film for liquid external packaging, as shown in fig. 1 and 2, which comprises a substrate layer 1, wherein the upper layer and the lower layer of the substrate layer 1 are provided with high-barrier surface layers, the upper layer of the high-barrier surface layer is provided with a hydrophobic layer 3, and the lower layer of the high-barrier surface layer is connected with an inner layer through a first adhesive layer 61; in the embodiment, the high-barrier surface layer is added to improve the barrier property of the film, avoid the problem that liquid volatilizes or oxygen enters to oxidize the liquid, and the hydrophobic layer 3 is added to reduce the hygroscopicity of the substrate layer 1, so that the quality problems such as nylon material deformation caused by moisture absorption are avoided; the inner layer is added, so that the air tightness of the film is better improved, the barrier property is improved, and bacteria are better prevented from breeding by directly contacting the antibacterial layer 5 with liquid;
As shown in fig. 1, 2 and 3, the high barrier surface layer comprises a first high barrier layer 21 and a second high barrier layer 22, wherein the first high barrier layer 21 is co-extruded and compounded on the upper layer of the substrate layer 1, and the second high barrier layer 22 is co-extruded and compounded on the lower layer of the substrate layer 1; the materials of the first high barrier layer 21 and the second high barrier layer 22 are EVOH materials, and in this embodiment, by adding a high barrier surface layer and adopting EVOH materials, the permeation of oxygen, carbon dioxide and other gases can be effectively blocked; meanwhile, the transparent glass has good transparency, glossiness, mechanical strength and thermal stability;
as shown in fig. 1, 2 and 3, the upper layer of the first high barrier layer 21 is co-extrusion-compounded with the hydrophobic layer 3; the hydrophobic layer 3 is made of nylon material added with anti-adhesion agent, so that a gully-shaped structure with roughness is formed on the surface of the hydrophobic layer; in the embodiment, the moisture absorption of the film is reduced by adding the hydrophobic layer 3, the quality problems such as nylon material deformation caused by moisture absorption are avoided, the nylon material added with the anti-blocking agent is adopted as the hydrophobic layer 3, a gully-shaped structure is formed on the surface of the nylon material, the surface roughness is improved, the moisture absorption of the film is further reduced, and the hydrophobic layer 3 is subjected to corona treatment, so that the surface tension of the hydrophobic layer 3 is increased, and the nylon material is not easy to tear in the stretching process;
As shown in fig. 1, 2 and 4, the inner layer is an aluminum foil layer 4, a second adhesive layer 62 and an antibacterial layer 5 in sequence from top to bottom, the lower layer of the second high barrier layer 22 is connected with the aluminum foil layer 4 through a first adhesive layer 61, and the lower layer of the aluminum foil layer 4 is connected with the antibacterial layer 5 through the second adhesive layer 62; in this embodiment, the inner layer is added, the first adhesive layer 61 is used to connect the inner layer with the second high-barrier surface layer, so as to prevent separation in a high-temperature environment of cooking, the inner layer is added to improve the light-shielding property and the barrier property of the film, and the aluminum foil layer 4 is added to shield light and better isolate the entry of oxygen, so that the barrier property of the film is improved to the greatest extent; by adding the antibacterial layer 5 to be in direct contact with the packaged liquid, the breeding of bacteria is better stopped; the toughness of the film itself is also improved by adding the first adhesive layer 61 and the second adhesive layer 62, and cracking is prevented.
The implementation principle of the embodiment of the utility model is as follows:
The hydrophobic layer 3, the first high barrier layer 21, the base material layer 1 and the second high barrier layer 22 are extruded in a coextrusion compounding mode, biaxially stretching is carried out after sheet casting is extruded, the lower layer of the second high barrier layer 22 is compounded with the aluminum foil layer 4 through the first adhesive layer 61, and the lower layer of the aluminum foil layer 4 is compounded with the antibacterial layer 5 through the second adhesive layer 62.
The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. Various components mentioned in the present utility model are common in the art, and it should be understood by those skilled in the art that the present utility model is not limited by the above embodiments, and the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications can be made in the present utility model without departing from the spirit and scope of the utility model, which is defined in the claims. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (6)
1. The utility model provides a biaxially oriented nylon film for liquid extranal packing, includes substrate layer (1), its characterized in that, upper and lower two-layer of substrate layer (1) are provided with high separation surface course, the upper strata of high separation surface course is provided with hydrophobic layer (3), the lower floor of high separation surface course is connected with the inlayer through first adhesive layer (61).
2. Biaxially oriented nylon film for liquid overwrap according to claim 1, wherein the high barrier layer comprises a first high barrier layer (21), a second high barrier layer (22), the upper layer of the base layer (1) is co-extrusion compounded with the first high barrier layer (21), and the lower layer of the base layer (1) is co-extrusion compounded with the second high barrier layer (22).
3. Biaxially oriented nylon film for liquid overwrap according to claim 2, wherein the upper layer of the first high barrier layer (21) is co-extruded with a hydrophobic layer (3).
4. The biaxially oriented nylon film for liquid external package according to claim 2, wherein the inner layer comprises an aluminum foil layer (4), a second adhesive layer (62) and an antibacterial layer (5) from top to bottom in sequence, the lower layer of the second high barrier layer (22) is connected with the aluminum foil layer (4) through the first adhesive layer (61), and the lower layer of the aluminum foil layer (4) is connected with the antibacterial layer (5) through the second adhesive layer (62).
5. Biaxially oriented nylon film for liquid overwrap according to claim 2, wherein the first high barrier layer (21) and the second high barrier layer (22) are EVOH materials.
6. The biaxially oriented nylon film for liquid exterior packaging according to claim 4, wherein the hydrophobic layer (3) is composed of a nylon material to which an anti-blocking agent is added so that a surface thereof forms a gully-like structure having roughness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322836588.1U CN221187736U (en) | 2023-10-23 | 2023-10-23 | Biaxially oriented nylon film for liquid external package |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322836588.1U CN221187736U (en) | 2023-10-23 | 2023-10-23 | Biaxially oriented nylon film for liquid external package |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221187736U true CN221187736U (en) | 2024-06-21 |
Family
ID=91519202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322836588.1U Active CN221187736U (en) | 2023-10-23 | 2023-10-23 | Biaxially oriented nylon film for liquid external package |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221187736U (en) |
-
2023
- 2023-10-23 CN CN202322836588.1U patent/CN221187736U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |