CN210082585U - Biaxial stretching extinction, high-barrier and heat-sealable polyamide film - Google Patents
Biaxial stretching extinction, high-barrier and heat-sealable polyamide film Download PDFInfo
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- CN210082585U CN210082585U CN201920367220.6U CN201920367220U CN210082585U CN 210082585 U CN210082585 U CN 210082585U CN 201920367220 U CN201920367220 U CN 201920367220U CN 210082585 U CN210082585 U CN 210082585U
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Abstract
The utility model provides a biaxial stretching extinction, high resistant separate, heat-sealable polyamide film, including five layers of retes through crowded biaxial stretching shaping altogether, its membranous layer structure top-down is nylon extinction layer, first nylon enhancement layer, nylon barrier layer, second nylon enhancement layer and nylon heat-seal layer in proper order. The outer layer of the polyamide film is a nylon extinction layer, and the nylon extinction film has the performance of high-temperature water boiling or steaming resistance; the first nylon reinforced layer and the second nylon reinforced layer are arranged in the film layer structure, so that excellent mechanical support is provided for the whole film, and the performance of the polyamide film is more excellent; by arranging the MXD-6 nylon barrier layer, the MXD-6 nylon has extremely excellent oxygen-blocking and water-blocking performances, and the requirements of the film on oxygen-blocking and water-blocking are met; the heat sealing performance of the film is ensured by arranging the nylon heat sealing layer; in addition, the polyamide film is formed by LISIM wires through double-drawing by a 5-layer co-extrusion technology, is not required to be compounded by an adhesive, can be used independently, and is energy-saving and environment-friendly.
Description
Technical Field
The utility model relates to a food package makes technical field, in particular to biaxial stretching extinction, high resistant separate, heat-sealable polyamide film.
Background
The biaxially oriented polyamide film has the advantages of excellent mechanical strength, barrier property, puncture resistance, transparency, oil resistance, chemical solvent resistance, no toxicity and the like, and is widely applied to the field of food packaging. Generally, the appearance of food packaging films can stimulate the purchasing desire of consumers to a certain extent, and some high-grade foods also have special requirements on the appearance effect of food packaging. The biaxially oriented polyamide film with the special appearance effect can enrich the variety of the biaxially oriented polyamide film and has wide market application prospect as a high-grade food packaging film. Therefore, it is also necessary to study how to increase the appearance of biaxially oriented polyamide films as food packaging films.
The matt film is used as a symbol of a fashionable and high-grade packaging material, gives people a soft, comfortable and hazy visual effect, and can stimulate the purchasing desire of consumers. Many food packaging films on the market adopt a delustering film to enhance the visual effect, and most of the food packaging films are composite films with a delustering effect formed by bonding the delustering film with a substrate film. At present, the delustering film mainly comprises BOPP (biaxially oriented polypropylene) film, and a food packaging film compounded by the BOPP delustering film and the biaxially oriented polyamide film is known in the market. However, the biaxially oriented polyamide food packaging film is limited by the characteristic that the BOPP extinction film cannot resist high temperature boiling and steaming, and the packaging film of some foods cannot be packaged by the biaxially oriented polyamide food packaging film, so that the biaxially oriented polyamide food packaging film has limitations in the field of food packaging.
In addition, most of the existing biaxial oriented polyamide films are at least compounded with CPP (cast polypropylene film) or CPE (cast polyethylene film) for use, so that the preparation process needs to be carried out by one compounding process, the processing cost is increased, and the glue and the solvent for compounding are also in risk of polluting the environment.
SUMMERY OF THE UTILITY MODEL
For solving the problem mentioned in the background art, the utility model provides a biaxial stretching extinction, high resistant separate, heat-sealable polyamide film, including five layers of retes through crowded biaxial stretching shaping altogether, its membranous layer structure top-down is nylon extinction layer, first nylon enhancement layer, nylon barrier layer, second nylon enhancement layer and nylon heat-seal layer in proper order.
Further, the thickness of the nylon extinction layer is 2-3 μm.
Further, the thickness of the nylon barrier layer is 2-5 μm.
Further, the nylon barrier layer is an MDX-6 nylon layer.
Furthermore, the nylon heat-sealing layer is a heat-sealing layer containing a shedding agent and a slipping agent.
Further, the thickness of the nylon heat sealing layer is 3-8 μm.
The utility model provides a biaxial stretching extinction, high barrier and heat-sealable polyamide film, which comprises five layers of co-extrusion biaxial stretching formed films, wherein the film layer structure comprises a nylon extinction layer, a first nylon enhancement layer, a nylon barrier layer, a second nylon enhancement layer and a nylon heat-sealing layer from top to bottom in sequence; the outermost layer of the polyamide film is a nylon extinction layer which has the characteristic of high-temperature water boiling or steaming resistance, the limitation of the traditional BOPP extinction film in the field of food packaging is solved, and the biaxially-oriented polyamide food packaging film can meet the requirement that some food has high-temperature water boiling or steaming resistance on the food packaging film; the polyamide film is provided with the first nylon reinforced layer and the second nylon reinforced layer in the film layer structure, so that excellent mechanical support is provided for the whole film, and the overall mechanical property of the polyamide film is more excellent; the polyamide film is provided with an MXD-6 nylon barrier layer, and the MXD-6 nylon has extremely excellent oxygen-blocking and water-blocking performances, so that the requirements of oxygen-blocking and water-blocking of the film are met; the polyamide film is provided with the nylon heat-sealing layer to ensure that the film can be subjected to heat sealing, wherein the nylon heat-sealing layer is preferably made of a nylon material added with an opening agent and a slipping agent, so that the anti-adhesion effect is achieved, and the film is prevented from being broken; in addition, the polyamide film is formed by double-drawing a LISIM (magnetically driven linear synchronous drawing) wire through a 5-layer co-extrusion technology, adhesive compounding is not needed, the polyamide film can be used independently, and the energy conservation and the environmental protection are realized.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a schematic diagram of a film structure of a biaxially oriented extinction, high-barrier, heat-sealable polyamide film provided by the present invention.
Reference numerals:
10 nylon matte layer 20 first nylon reinforcement layer 30 nylon barrier layer
40 second nylon reinforcement layer 50 nylon heat seal layer
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Fig. 1 is the utility model provides a pair of rete structure schematic diagram of biaxial stretching extinction, high resistant partition, heat-sealable polyamide film, as shown in fig. 1, a biaxial stretching extinction, high resistant partition, heat-sealable polyamide film, including five layers of retes through crowded biaxial stretching shaping altogether, its rete structure top-down is nylon extinction layer 10, first nylon enhancement layer 20, nylon barrier layer 30, second nylon enhancement layer 40 and nylon heat-seal layer 50 in proper order.
In specific implementation, as shown in fig. 1, the polyamide film provided by the present invention comprises 5 co-extruded film layers, which are sequentially a nylon extinction layer 10, a first nylon reinforcement layer 20, a nylon barrier layer 30, a second nylon reinforcement layer 40 and a nylon heat seal layer 50 from top to bottom; the polyamide film is formed by biaxial stretching through a 5-layer co-extrusion technology on an LISIM (magnetically driven linear synchronous stretching) line, each layer is made of a nylon material, the compatibility is good, and bonding resin is not required to be added between the layers in the extrusion process; the prepared polyamide film does not need to be compounded and can be independently used. The outermost layer of the polyamide film is a nylon extinction layer 10, the surface gloss of the nylon extinction layer 10 is very low, the visual sense is comfortable, the nylon extinction layer 10 is used as a standard material to give noble visual sense, the nylon extinction layer 10 is prepared from the existing nylon extinction material on the market, and the material can be selected according to the extinction effect requirement of an actual product; the middle layer of the polyamide film is a nylon barrier layer 30, the nylon barrier layer 30 has excellent oxygen-blocking and water-blocking performances, the polyamide film can meet the requirements of oxygen-blocking and water-blocking, the freshness of food can be kept within a certain time when the polyamide film is used as a food packaging film, meanwhile, the fragrance of the food can be kept, the nylon barrier layer 30 is prepared from the existing barrier nylon material in the market, and materials can be selected according to the barrier effect requirements of actual products; the innermost layer of the polyamide film is a nylon heat-sealing layer 50, and the nylon heat-sealing layer 50 is made of the existing nylon material for heat sealing in the market, so that the polyamide film can be subjected to heat sealing; according to the polyamide film, the first nylon reinforcing layer 20 is arranged between the nylon extinction layer 10 and the nylon barrier layer 30, the second nylon reinforcing layer 40 is arranged between the nylon barrier layer 30 and the nylon heat sealing layer 50, the first nylon reinforcing layer 20 and the second nylon reinforcing layer 40 can provide excellent mechanical support for the whole film, the first nylon reinforcing layer 20 and the second nylon reinforcing layer 40 are made of reinforced nylon materials on the market, and materials can be selected according to the strength requirement of the polyamide film.
It should be noted that fig. 1 is only an example provided by the polyamide film of the present invention, and the polyamide film of the present invention includes five layers of co-extruded biaxially oriented films, which of course does not exclude designing more film structures for other effects. Based on the utility model discloses a rete structure basis is in order to make the film have other performance effects the utility model discloses the product that sets up other retes between each layer also all belongs to the utility model discloses a protection scope.
The utility model provides a biaxial stretching extinction, high barrier and heat-sealable polyamide film, which comprises five layers of co-extrusion biaxial stretching formed films, wherein the film layer structure comprises a nylon extinction layer, a first nylon enhancement layer, a nylon barrier layer, a second nylon enhancement layer and a nylon heat-sealing layer from top to bottom in sequence; the outermost layer of the polyamide film is a nylon extinction layer which has the characteristic of high-temperature water boiling or steaming resistance, the limitation of the traditional BOPP extinction film in the field of food packaging is solved, and the biaxially-oriented polyamide food packaging film can meet the requirement that some food has high-temperature water boiling or steaming resistance on the food packaging film; the polyamide film is provided with the first nylon reinforced layer and the second nylon reinforced layer in the film layer structure, so that excellent mechanical support is provided for the whole film, and the overall mechanical property of the polyamide film is more excellent; the polyamide film is provided with an MXD-6 nylon barrier layer, and the MXD-6 nylon has extremely excellent oxygen-blocking and water-blocking performances, so that the requirements of oxygen-blocking and water-blocking of the film are met; the polyamide film is provided with the nylon heat-sealing layer to ensure that the film can be subjected to heat sealing, wherein the nylon heat-sealing layer is preferably made of a nylon material added with an opening agent and a slipping agent, so that the anti-adhesion effect is achieved, and the film is prevented from being broken; in addition, the polyamide film is formed by double-drawing a LISIM (magnetically driven linear synchronous drawing) wire through a 5-layer co-extrusion technology, adhesive compounding is not needed, the polyamide film can be used independently, and the energy conservation and the environmental protection are realized.
Preferably, the nylon matt layer 10 is 2-3 μm thick.
Preferably, the nylon barrier layer 30 is 2-5 μm thick.
Preferably, the nylon heat-seal layer 50 has a thickness of 3 to 8 μm.
In specific implementation, the thickness of the nylon extinction layer 10 is controlled to be 2-3 mu m, the thickness of the nylon barrier layer 30 is controlled to be 2-5 mu m, and the thickness of the nylon heat sealing layer 50 is controlled to be 3-8 mu m, so that the total thickness of the film is smaller, the film is more economical and practical, and the film meets market requirements.
Preferably, the nylon barrier layer 30 is an MDX-6 nylon layer.
In specific implementation, the nylon barrier layer 30 is made of MDX-6 nylon material, and the MXD-6 nylon material has excellent oxygen and water blocking performance, so that the polyamide film can achieve excellent water and oxygen blocking effects.
Preferably, the nylon heat sealing layer 50 is a heat sealing layer containing a mouth-opening agent and a slipping agent.
In specific implementation, the nylon heat-sealing layer 50 is made of a nylon heat-sealing material with an opening agent and a slipping agent added in the market, and due to the fact that a small amount of the opening agent and the slipping agent are added in the nylon heat-sealing components, an anti-adhesion effect can be achieved, and the film can be prevented from being broken.
Although terms such as nylon matte layer, nylon reinforcement layer, nylon barrier layer, and nylon heat seal layer are used more often herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (5)
1. A biaxially oriented matte high-barrier heat-sealable polyamide film, which is characterized in that: the nylon heat-sealing film comprises five film layers formed by co-extrusion and biaxial stretching, wherein the film layer structure sequentially comprises a nylon light-eliminating layer (10), a first nylon reinforcing layer (20), a nylon barrier layer (30), a second nylon reinforcing layer (40) and a nylon heat-sealing layer (50) from top to bottom.
2. A biaxially oriented matte, high barrier, heat sealable polyamide film according to claim 1, wherein: the thickness of the nylon extinction layer (10) is 2-3 mu m.
3. A biaxially oriented matte, high barrier, heat sealable polyamide film according to claim 1, wherein: the nylon barrier layer (30) is 2-5 μm thick.
4. A biaxially oriented matte, high barrier, heat sealable polyamide film according to claim 1, wherein: the nylon barrier layer (30) is an MDX-6 nylon layer.
5. A biaxially oriented matte, high barrier, heat sealable polyamide film according to claim 1, wherein: the thickness of the nylon heat-sealing layer (50) is 3-8 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920367220.6U CN210082585U (en) | 2019-03-21 | 2019-03-21 | Biaxial stretching extinction, high-barrier and heat-sealable polyamide film |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920367220.6U CN210082585U (en) | 2019-03-21 | 2019-03-21 | Biaxial stretching extinction, high-barrier and heat-sealable polyamide film |
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| CN210082585U true CN210082585U (en) | 2020-02-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115612291A (en) * | 2022-11-08 | 2023-01-17 | 厦门长塑实业有限公司 | Extinction polyamide film and preparation method thereof |
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2019
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115612291A (en) * | 2022-11-08 | 2023-01-17 | 厦门长塑实业有限公司 | Extinction polyamide film and preparation method thereof |
| CN115612291B (en) * | 2022-11-08 | 2024-02-20 | 厦门长塑实业有限公司 | Extinction polyamide film and preparation method thereof |
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