CN211165703U

CN211165703U - Biaxial stretching touch separation film

Info

Publication number: CN211165703U
Application number: CN201921256471.3U
Authority: CN
Inventors: 刘运锦; 贾露; 李永泉; 林新土; 陈曦; 郑伟
Original assignee: Xiamen Changsu Industrial Co Ltd
Current assignee: Xiamen Changsu Industrial Co Ltd
Priority date: 2019-08-05
Filing date: 2019-08-05
Publication date: 2020-08-04
Anticipated expiration: 2029-08-05

Abstract

The utility model relates to a film packaging field, in particular to biaxial stretching sense of touch separation film, wherein, including five layers crowded retes altogether, its membranous layer structure is polypropylene sense of touch functional layer, the antibiotic layer of polyamide, EV0H layer, polyamide water blocking layer and polyamide heat-seal layer from the extroversion in proper order. The utility model provides a biaxial stretching touch separation film, which has smooth and fine hand feeling after being touched by people by arranging a polypropylene touch functional layer on the surface layer, improves the touch performance and reduces the occurrence of damaged surface scratches; the polyamide antibacterial layer, the EV0H layer and the polyamide water-resistant layer are arranged, so that the polyamide antibacterial packaging material has good antibacterial and barrier properties, and the storage time of a product in the packaging material is prolonged; the polyamide heat-sealing layer is arranged on the innermost layer, so that the polyamide heat-sealing layer has good heat-sealing performance; the five-layer film is formed by a linear motor track through co-extrusion technology and double-drawing, adhesive compounding is not needed, energy is saved, environment is protected, meanwhile, the film formed by double-drawing can be used independently, and cost is reduced.

Description

Biaxial stretching touch separation film

Technical Field

The utility model relates to a film packaging field, in particular to biaxial stretching sense of touch separation film.

Background

Biaxially oriented polyamide films have excellent mechanical strength, barrier properties, puncture resistance, transparency, resistance to oil and chemical solvents, nontoxicity and other advantages, and are used as packaging materials in the fields of daily necessities, electronic products, foods, medicines and the like.

Along with the improvement of living standard of people, in the food field, the use experience of a packaging film is highly pursued, the packaging film has good barrier property to block air and water vapor so as to prolong the storage time of a product, and has good antibacterial performance to prevent microorganisms such as escherichia coli from polluting food.

However, the existing packaging film generally has the defects that although the surface is smooth, the surface is relatively hard, and a very hard touch feeling is given to people, so that the texture of a product is influenced.

SUMMERY OF THE UTILITY MODEL

Give other people the problem of a crude sense of touch for solving present biaxial stretching polyamide packaging film who mentions in the background art, the utility model provides a biaxial stretching sense of touch separation film, wherein, including five layers crowded retes altogether, its membranous layer structure is polypropylene sense of touch functional layer, the antibiotic layer of polyamide, EV0H layer, polyamide water-blocking layer and polyamide heat-seal layer from the extroversion in proper order.

On the basis of the structure, the polyamide antibacterial layer is filled with nano-scale activated carbon particles.

On the basis of the structure, the thickness ratio of the polyamide antibacterial layer, the EV0H layer and the polyamide water-blocking layer is 5: 1-2.

On the basis of the structure, the thickness of the polyamide antibacterial layer is 5-25 μm, and the thickness of the EV0H layer and the thickness of the polyamide water-blocking layer are both 2-5 μm.

On the basis of the structure, the thickness of the polypropylene touch functional layer is 1-3 μm.

On the basis of the structure, the thickness of the polyamide heat sealing layer is 1-3 μm.

The utility model provides a biaxial stretching touch separation film, which has smooth and fine hand feeling after being touched by people by arranging a polypropylene touch functional layer on the surface layer, improves the touch performance and reduces the occurrence of damaged surface scratches; the polyamide antibacterial layer, the EV0H layer and the polyamide water-resistant layer are arranged, so that the polyamide antibacterial packaging material has good antibacterial and barrier properties, and the storage time of a product in the packaging material is prolonged; the polyamide heat-sealing layer is arranged on the innermost layer, so that the polyamide heat-sealing layer has good heat-sealing performance; this five retes are drawn the shaping through coextruding technology by linear motor track, need not to use gluing agent complex, and energy-concerving and environment-protective, the film after two drawing shaping simultaneously can the exclusive use, need not extra compound PE and CPP heat seal layer material again, reduces production processes, reduce cost.

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 view of a film layer structure of a biaxially oriented tactile barrier film provided by the present invention.

Reference numerals:

10 Polypropylene touch functional layer 30 EVOH layer

20 polyamide antibacterial layer 40 polyamide water-resistant layer

Heat-sealing layer of 21 nano-scale activated carbon particle 50 polyamide

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.

The utility model provides a biaxial stretching sense of touch separation film, including five layers crowded retes altogether, its membranous layer structure is polypropylene sense of touch functional layer 10, the antibiotic layer 20 of polyamide, EV0H layer 30, polyamide water-blocking layer 40 and polyamide heat-seal layer 50 from the extroversion in proper order.

In specific implementation, as shown in fig. 1, the biaxially oriented barrier film comprises five co-extruded film layers, wherein a polypropylene touch functional layer 10, a polyamide antibacterial layer 20, an EV0H layer 30, a polyamide water-blocking layer 40 and a polyamide heat-sealing layer 50 are sequentially arranged in the film layer structure from outside to inside, and the five film layers are formed by a linear motor track through double-drawing by a co-extrusion technology without using an adhesive for compounding, so that the biaxially oriented barrier film is energy-saving and environment-friendly.

The polypropylene touch functional layer 10 is arranged on the surface layer, and the existing polypropylene touch film is adopted, and specifically, the extrusion type biaxially oriented polypropylene touch film disclosed in the patent document CN106671532A, namely an extrusion type biaxially oriented polypropylene touch film and a preparation method thereof is adopted, and the extrusion type biaxially oriented polypropylene touch film is composed of a thermoplastic polyurethane elastomer, homo-polypropylene and maleic anhydride grafted polyolefin, and the maleic anhydride grafted polyolefin can improve the compatibility of the polypropylene touch film and polyamide and prevent delamination after co-extrusion molding. The polypropylene touch functional layer 10 has a touch function and a good matte effect, has smooth and fine hand feeling after being touched, is comfortable and strong like silk velvet touch, and reduces the occurrence of surface scratch damage; meanwhile, the coating has a waterproof effect, prevents moisture from penetrating into the EV0H layer, thereby reducing the barrier property of the film and expanding the application of the film in a high-humidity environment.

The polyamide antibacterial layer 20 is prepared from the existing polyamide antibacterial material, specifically an antibacterial nylon 6 disclosed in the patent document "an antibacterial nylon 6 and a preparation method thereof" with the publication number of CN109880357A, and the polyamide antibacterial layer 20 has antibacterial performance and simultaneously plays a role of a supporting layer.

The EV0H layer 30 is prepared from the existing EVOH material, the specific model is F171B, and the EV0H layer provides excellent oxygen barrier performance, prevents external oxygen from entering the interior of the package, and prolongs the storage time of products in the package.

The polyamide water-blocking layer 40 is prepared by adopting the existing low-water-absorption polyamide material, specifically, the polyamide water-blocking layer 40 is prepared by adopting a low-water-absorption high-extinction polyamide film disclosed in the patent document CN109825076A, namely a polyamide film with low water absorption and high extinction and a preparation method thereof, and the polyamide water-blocking layer 40 improves the good water-blocking effect.

The polyamide heat-sealing layer 50 is arranged on the innermost layer, a heat-sealing nylon material commonly used in the prior art is adopted, specifically, a heat-sealing biaxially oriented nylon film disclosed in patent document CN108481866A, namely, "a heat-sealing biaxially oriented nylon film and a preparation method thereof", can be adopted, the polyamide heat-sealing layer 50 has good heat-sealing performance, high heat-sealing strength and no need of being compounded with a polyolefin film, meanwhile, the polyamide heat-sealing layer 50 can have good printing effect after corona treatment, and preferably, the corona value is greater than 52 dyne.

The utility model provides a biaxial stretching touch separation film, which has smooth and fine hand feeling after being touched by people by arranging a polypropylene touch functional layer on the surface layer, improves touch performance, reduces the occurrence of damaged surface scratches and has good matte effect; the polyamide antibacterial layer, the EV0H layer and the polyamide water-resistant layer are arranged, so that the polyamide antibacterial packaging material has good antibacterial and barrier properties, and the storage time of a product in the packaging material is prolonged; the polyamide heat-sealing layer is arranged on the innermost layer, so that the polyamide heat-sealing layer has good heat-sealing performance; this five retes are drawn the shaping through coextruding technology by linear motor track, need not to use gluing agent complex, and energy-concerving and environment-protective, the film after two drawing shaping simultaneously can the exclusive use, need not additionally compound PE and CPP heat seal layer material again.

Preferably, the polyamide antibacterial layer 20 is filled with nano-scale activated carbon particles 21.

In specific implementation, the polyamide antibacterial layer 20 is filled with the nano-scale activated carbon particles 21, and the nano-scale activated carbon particles 21 can adsorb harmful gases and microorganisms, so that the harmful gases or microorganisms outside are prevented from entering the package to pollute the contents.

Preferably, the thickness ratio of the polyamide antibacterial layer 20 to the EV0H layer 30 to the polyamide water-blocking layer 40 is 5: 1-2.

In the specific implementation, when the thickness ratio of the polyamide antibacterial layer 20 to the EV0H layer 30 to the polyamide water-blocking layer 40 is controlled to be 5: 1-2, the antibacterial, oxygen-blocking and water-blocking performances of the film are optimal.

Preferably, the polypropylene touch functional layer 10 has a thickness of 1 to 3 μm, the polyamide antibacterial layer 20 has a thickness of 5 to 25 μm, and the EV0H layer 30 and the polyamide water-blocking layer 40 each have a thickness of 2 to 5 μm.

Preferably, the polypropylene touch functional layer 10 has a thickness of 1 to 3 μm

Preferably, the thickness of the polyamide heat-sealing layer 50 is 1-3 μm.

In specific implementation, through multiple test comparisons and by combining the production cost of the film, when the thickness of the polypropylene touch functional layer 10 is controlled to be 1-3 μm, the thickness of the polyamide antibacterial layer 20 is controlled to be 5-25 μm, the thickness of the EV0H layer 30 is controlled to be 2-5 μm, the thickness of the polyamide water-resistant layer 40 is controlled to be 2-5 μm, and the thickness of the polyamide heat-sealing layer 50 is controlled to be 1-3 μm, the cost performance of the film is high, namely the composite film is as thin as possible on the premise of ensuring good touch, antibacterial, barrier and heat-sealing performances of the film, so that the production cost is reduced, the film is more economic and practical, and the film meets the market demand.

Although terms such as polypropylene touch-sensitive functional layer, polyamide antibacterial layer, EVOH layer, polyamide water-resistant layer, polyamide heat-seal layer, etc. 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

1. A biaxially oriented tactile barrier film characterized in that: the anti-bacterial fabric comprises five co-extruded film layers, wherein a polypropylene touch functional layer (10), a polyamide antibacterial layer (20), an EV0H layer (30), a polyamide water-resistant layer (40) and a polyamide heat-sealing layer (50) are sequentially arranged on the film layer structure from outside to inside.

2. A biaxially oriented tactile barrier film according to claim 1, wherein: the thickness ratio of the polyamide antibacterial layer (20), the EV0H layer (30) and the polyamide water-resistant layer (40) is 5: 1-2.

3. A biaxially oriented tactile barrier film according to claim 2, wherein: the thickness of the polyamide antibacterial layer (20) is 5-25 mu m, and the thickness of the EV0H layer (30) and the thickness of the polyamide water-resistant layer (40) are both 2-5 mu m.

4. A biaxially oriented tactile barrier film according to claim 3, wherein: the polypropylene touch functional layer (10) is 1-3 μm thick.

5. A biaxially oriented tactile barrier film according to claim 3, wherein: the thickness of the polyamide heat-sealing layer (50) is 1-3 mu m.