CN217145215U

CN217145215U - Ventilative type PE composite casting membrane

Info

Publication number: CN217145215U
Application number: CN202123348909.0U
Authority: CN
Inventors: 许福伦; 周彬
Original assignee: Heyuan Industrial Co ltd
Current assignee: Heyuan Industrial Co ltd
Priority date: 2021-12-28
Filing date: 2021-12-28
Publication date: 2022-08-09
Anticipated expiration: 2031-12-28

Abstract

The utility model discloses a breathable PE composite casting film, which comprises a corona layer, wherein a heat-sealing layer is arranged at the top of the corona layer, the top surface of the heat-sealing layer is attached to the bottom surface of a first casting film layer, and the top surface of the first casting film layer is attached to the bottom surface of a middle supporting layer; the top of the middle supporting layer is provided with a second casting film layer, the top surface of the second casting film layer is attached to the bottom surface of the protective interlayer, and the top of the protective interlayer is provided with a top protective layer; the top protective layer is provided with air holes, and the inner wall of each air hole is provided with a sterilization inner attached layer. This compound curtain coating membrane of ventilative type PE has optimized the structure of supporting layer and the relative position of curtain coating rete and supporting layer, has improved compound curtain coating membrane holistic structural strength, still increases simultaneously and has set up ventilative and the structure of disinfecting, when guaranteeing that the membrance body is ventilative, adsorbs the air that passes and disinfects, has improved the effect of compound curtain coating membrane when packing food greatly.

Description

Ventilative type PE composite casting membrane

Technical Field

The utility model relates to a compound curtain coating membrane technical field of PE specifically is a compound curtain coating membrane of ventilative type PE.

Background

The common cast film is a plastic film produced by a cast film machine, has excellent heat sealing performance and excellent transparency, is one of main packaging composite base materials, is used for producing high-temperature cooking films, vacuum aluminized films and the like, and gradually replaces a film blowing production mode due to the fact that the cast film is high in production speed and yield, and the transparency, the glossiness, the thickness uniformity and the like of the film are extremely excellent, and various composite cast films appear to meet different requirements along with application in different fields.

Traditional compound casting film mainly has two-layer film body, corona layer, heat-seal layer and supporting layer to constitute, for simple stack composite construction, the supporting layer does not carry out configuration optimization, it is relatively poor to lead to compound casting film whole tensile properties, and compound casting film is when being applied to food package, whole gas permeability is not enough to do not possess antibacterial function, compound casting film can't guarantee by the state that the food of packing can be in higher quality for a long time, so need design a ventilative type PE compound casting film to above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a compound curtain coating membrane of ventilative type PE to propose traditional compound curtain coating membrane for simple stack composite construction in solving above-mentioned background, the supporting layer does not carry out configuration optimization, leads to the whole tensile property of compound curtain coating membrane to be relatively poor, and compound curtain coating membrane when being applied to food package, whole gas permeability is not enough, and does not possess antibacterial function, and compound curtain coating membrane can't guarantee by the problem that the food of packing can be in higher quality state for a long time.

In order to achieve the above object, the utility model provides a following technical scheme:

a breathable PE composite cast film comprising:

the top of the corona layer is provided with a heat-sealing layer, the top surface of the heat-sealing layer is attached to the bottom surface of the first casting film layer, and the top surface of the first casting film layer is attached to the bottom surface of the middle supporting layer;

the top of the middle supporting layer is provided with a second casting film layer, the top surface of the second casting film layer is attached to the bottom surface of the protective interlayer, and the top of the protective interlayer is provided with a top protective layer;

the top protective layer is provided with air holes, and the inner wall of each air hole is provided with a sterilization inner attached layer.

Preferably, the first and second casting film layers are symmetrically distributed about the middle support layer.

Preferably, the thicknesses of the first casting film layer, the middle support layer and the second casting film layer are the same, the first casting film layer is a polypropylene casting film layer, and the second casting film layer is a polyethylene casting film layer.

Preferably, the middle support layer comprises a support weaving line and an inner core line, and the inner core line is arranged in the center of the support weaving line.

Preferably, the support knitting lines are divided into two groups and are arranged in a herringbone cross mode.

Preferably, the thickness of the supporting thread is greater than 1/2 of the radius of the inner core wire, the material of the supporting thread is nylon, and the material of the inner core wire is polyurethane.

Preferably, the thickness of the protective interlayer is 1/2 of the thickness of the top protective layer, the protective interlayer is made of graphite, and the top protective layer is made of non-woven fabric.

Preferably, the overlooking shape of the air holes is regular hexagon, the air holes are densely arranged on the top protective layer at equal intervals, and the sterilization inner attached layer on the inner wall of the air holes is a silver ion antibacterial film.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model optimizes the structure of the middle support layer and the relative position of the casting film layer and the middle support layer on the basis of the simple superposition composite structure of the traditional composite casting film, thereby improving the overall structural strength of the composite casting film;

2. the utility model discloses a work of mutually supporting of protection interlayer, top inoxidizing coating, bleeder vent and the interior annex that disinfects for the lamina membranacea has had ventilative and the structure of disinfecting, when guaranteeing that the lamina membranacea is ventilative, adsorbs the air that passes and disinfects, has improved the effect of compound curtain coating membrane when packing food greatly.

Drawings

Fig. 1 is a schematic view of the front view cross-section structure of the present invention.

Fig. 2 is a schematic view of the top protective layer of the present invention.

Fig. 3 is a schematic view of a top view structure of the middle support layer of the present invention.

Fig. 4 is a schematic view of the sectional structure of the supporting thread and the inner core thread of the present invention.

In the figure: 1. a corona layer; 2. a heat seal layer; 3. a first casting film layer; 4. a middle support layer; 401. supporting the weaving line; 402. an inner core wire; 5. a second casting film layer; 6. a protective barrier; 7. a top protective layer; 8. air holes are formed; 9. sterilizing the inner layer.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, 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.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides an embodiment:

a breathable PE composite cast film comprising:

the corona layer 1, the top of the corona layer 1 is provided with a heat-sealing layer 2, the top surface of the heat-sealing layer 2 is attached to the bottom surface of a first casting film layer 3, the top surface of the first casting film layer 3 is attached to the bottom surface of a middle supporting layer 4, the first casting film layer 3 and a second casting film layer 5 are symmetrically distributed relative to the middle supporting layer 4, and the structural design ensures that the middle supporting layer 4 can simultaneously structurally reinforce the first casting film layer 3 and the second casting film layer 5;

the middle support layer 4 is provided with a second casting film layer 5 at the top of the middle support layer 4, the thicknesses of the first casting film layer 3, the middle support layer 4 and the second casting film layer 5 are the same, the first casting film layer 3 is a polypropylene casting film layer, the second casting film layer 5 is a polyethylene casting film layer, the structural design ensures that the strength of the first casting film layer 3, the middle support layer 4 and the second casting film layer 5 is enough, the tensile property of the whole film body is improved, the middle support layer 4 comprises a support weaving line 401 and an inner core line 402, the center of the support weaving line 401 is provided with the inner core line 402, the structural design increases the integral structural strength of the middle support layer 4, the tensile property and the torsional property of the middle support layer 4 are greatly improved, the top surface of the second casting film layer 5 is attached to the bottom surface of the protective interlayer 6, and the top protective layer 7 is arranged at the top of the protective interlayer 6;

the top protective layer 7 is provided with an air vent 8, and the inner wall of the air vent 8 is provided with a sterilization inner attached layer 9.

In one embodiment, the supporting threads 401 are divided into two groups which are arranged in a herringbone shape, and the structural design enables the middle supporting layer 4 formed by the supporting threads 401 to have stronger toughness when being stretched.

In one preferred embodiment, the thickness of the supporting thread 401 is greater than 1/2 of the radius of the inner core 402, the material of the supporting thread 401 is nylon, and the material of the inner core 402 is polyurethane, so that the middle supporting layer 4 has better wear resistance and elasticity due to the better wear resistance of nylon and the better elasticity of polyurethane.

In one embodiment, the thickness of the protective interlayer 6 is 1/2 of the thickness of the top protective layer 7, the material of the protective interlayer 6 is graphite, and the material of the top protective layer 7 is non-woven fabric, so that the protective interlayer 6 and the top protective layer 7 have good air permeability and can adsorb impurities in the outside air.

In one preferred embodiment, the overlooking shape of the air holes 8 is regular hexagon, the air holes 8 are densely formed in the top protective layer 7 at equal intervals, and the sterilization inner attached layer 9 on the inner wall of the air holes 8 is a silver ion antibacterial film, so that the air permeability of the top protective layer 7 is improved by the structural design, and meanwhile, the penetrating air can be sterilized by matching with the protective interlayer 6, and the packaging and protection effects of the whole film body on food are ensured.

The utility model discloses a theory of operation does: when the device is used, the whole body is coated outside an article, the middle support layer 4 has higher tensile property under the action of supporting the knitting yarn 401 and the inner core yarn 402, and supports the first casting film layer 3 and the second casting film layer 5 at two sides, so that the tensile property of the first casting film layer 3 and the second casting film layer 5 is enhanced, and the irreversible deformation or breakage of the whole device when the whole device is pulled is effectively avoided;

and gas can flow fast through bleeder vent 8 on the top inoxidizing coating 7, and when the air current passed bleeder vent 8, the interior annex 9 that disinfects of 8 inner walls of bleeder vent disinfected the air, and the protection interlayer 6 with the laminating of top inoxidizing coating 7 also can carry out effective absorption to moisture in the air and impurity etc. when improving the whole gas permeability of device, guarantees that the food of being packed can be preserved for a long time, can not appear rotting fast.

The above description is only an example of the present invention, and the common general knowledge of the known specific structures and characteristics of the embodiments is not described herein. It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. A breathable PE composite cast film, comprising:

the corona layer (1), a heat-sealing layer (2) is arranged on the top of the corona layer (1), the top surface of the heat-sealing layer (2) is attached to the bottom surface of the first casting film layer (3), and the top surface of the first casting film layer (3) is attached to the bottom surface of the middle supporting layer (4);

the top of the middle supporting layer (4) is provided with a second casting film layer (5), the top surface of the second casting film layer (5) is attached to the bottom surface of the protective interlayer (6), and the top of the protective interlayer (6) is provided with a top protective layer (7);

the top protective layer (7), the top protective layer (7) is provided with an air hole (8), and the inner wall of the air hole (8) is provided with a sterilization inner attached layer (9).

2. A gas permeable PE composite cast film according to claim 1, characterized in that: the first casting film layer (3) and the second casting film layer (5) are symmetrically distributed relative to the middle support layer (4).

3. The air permeable PE composite cast film according to claim 1, wherein: the thickness of the first casting film layer (3), the thickness of the middle supporting layer (4) and the thickness of the second casting film layer (5) are the same, the first casting film layer (3) is a polypropylene casting film layer, and the second casting film layer (5) is a polyethylene casting film layer.

4. A gas permeable PE composite cast film according to claim 1, characterized in that: the middle support layer (4) comprises a support weaving line (401) and an inner core line (402), and the inner core line (402) is arranged in the center of the support weaving line (401).

5. A gas permeable PE composite cast film according to claim 4, wherein: the supporting weaving lines (401) are divided into two groups and are arranged in a cross way in a herringbone shape.

6. A gas permeable PE composite cast film according to claim 4, wherein: the thickness of the supporting weaving line (401) is larger than 1/2 of the radius of the inner core line (402), the material of the supporting weaving line (401) is nylon, and the material of the inner core line (402) is polyurethane.

7. A gas permeable PE composite cast film according to claim 1, characterized in that: the thickness of the protective interlayer (6) is 1/2 of the thickness of the top protective layer (7), the protective interlayer (6) is made of graphite, and the top protective layer (7) is made of non-woven fabric.

8. A gas permeable PE composite cast film according to claim 1, characterized in that: the overlooking shape of the air holes (8) is regular hexagon, the air holes (8) are densely arranged on the top protective layer (7) at equal intervals, and the sterilization inner attached layer (9) on the inner wall of the air holes (8) is a silver ion antibacterial film.