CN210140116U - Packaging film and packaging bag made of packaging film - Google Patents

Abstract

The utility model discloses a packaging film and wrapping bag, wherein the packaging film is including the polypropylene top layer, the aluminium foil layer, anti dielectric layer and the polypropylene inlayer that stack gradually the setting, the polypropylene top layer includes the outer end heat seal layer, middle polypropylene layer and the inner heat seal layer that stack gradually the setting towards the direction of polypropylene inlayer, all bonds through the gluing agent in inner heat seal layer, aluminium foil layer, anti dielectric layer and the polypropylene inlayer between every adjacent two-layer, the coefficient of friction on outer end heat seal layer is between 0.1-0.15. The outermost layer of the packaging film of the utility model is a heat seal layer rather than a printing layer, and the friction coefficient of the outermost layer is controlled between 0.1 and 0.15 and is smaller than the friction coefficient of the national standard of China by 0.3, so that when the packaging film is packaged into a packaging bag, the heat seal layer at the outer end can be heat-sealed with the polypropylene inner layer together, and the edge sealing is well eliminated; moreover, the packaging mode of thermally sealing the outer end heat sealing layer and the polypropylene inner layer together can also accelerate the packaging efficiency.

Description

Packaging film and packaging bag made of packaging film

Technical Field

The utility model relates to a packing plant technical field especially relates to a packaging film and the wrapping bag of making by packaging film.

Background

The share of plastic packages and plastic package products in the market is getting larger and larger, particularly, the composite plastic flexible packages are widely applied to the fields of food, medicine, chemical industry and the like, and the package products bring great convenience to our lives. However, the outer layer of the existing composite packaging film is a printing layer, and the inner layer is a polypropylene layer, so that the packaging mode of butt-joint heat sealing of the inner layer and butt-joint heat sealing of the outer layer and the outer layer can be adopted, the packaging mode has low efficiency, and the packaging bag has the defect of hot-seal edges, so that the overall appearance of the packaging bag is not attractive, and materials are wasted.

For example, chinese patent publication No. CN201224569Y discloses "a packaging bag for a microwave oven, which includes a bag body formed by sealing at least two layers of bag body materials, each layer of bag body material is divided into a heat-sealing surface and a non-heat-sealing surface, a seal edge is provided on the bag body, and a coating region is provided on all or part of the heat-sealing surface of at least one seal edge. The packaging bag can also be a cover film product, the bag body material of the packaging bag comprises a cover film material and a bottom tray which is thermally sealed with the cover film material, and the coating is locally coated on the heat sealing surface of the cover film material. After the cover film material with the special coating is heat-sealed with the bottom tray, an area is formed in the sealed area, and the same automatic air release function of microwave oven heating is achieved. However, the packaging method of the packaging bag for the microwave oven has the defects of low packaging efficiency and hot edge sealing on the appearance.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a wrapping bag that wrapping film and made by the wrapping film aims at solving and has hot banding and the packaging efficiency low problem on the current wrapping bag.

For solving the technical problem, the utility model discloses a realize like this, a packaging film, including the polypropylene top layer, the aluminium foil layer, anti dielectric layer and the polypropylene inlayer that stack gradually the setting, the polypropylene top layer includes the orientation the outer end heat seal layer, middle polypropylene layer and the inner heat seal layer that set gradually are stacked gradually to the direction of polypropylene inlayer, the inner heat seal layer the aluminium foil layer anti dielectric layer with all bond through the gluing agent between every adjacent two-layer in the polypropylene inlayer, the coefficient of friction on outer end heat seal layer is between 0.1-0.15.

Furthermore, a slipping agent with the friction coefficient of 0.1-0.15 is added in the outer end heat sealing layer.

Further, the dielectric layer is polyamide.

Further, the dielectric resistance layer is subjected to double-sided corona treatment, and the surface tension of the dielectric resistance layer is greater than 48 mN/M.

The utility model provides a packaging bag, the packaging bag is rolled up by the packaging film and is made the encapsulation and form, when rolling up the encapsulation, the laminating of polypropylene inlayer thereby tubular structure is made to the heat-seal on the outer end heat seal layer, tubular structure's both ends are equipped with respectively and are used for the sealed aluminium card of reality.

Compared with the prior art, the utility model, beneficial effect lies in: the outmost layer of the packaging film of the utility model is a heat seal layer instead of a printing layer, and the outmost friction coefficient is controlled between 0.1-0.15 and is smaller than the friction coefficient of the Chinese national standard by 0.3, so that when the packaging film is rolled and packaged into a packaging bag, the outer end heat seal layer can be heat-sealed with the polypropylene inner layer, the edge sealing is well eliminated, and the packaging film has the advantages of beautiful appearance and one edge sealing material can be saved in each packaging bag; moreover, the outer end heat sealing layer and the polypropylene inner layer are heat-sealed together, so that the packaging efficiency can be greatly accelerated.

Drawings

Fig. 1 is a schematic structural view of a packaging film according to embodiment 1 of the present invention;

fig. 2 is a schematic cross-sectional view of a packaging bag according to embodiment 2 of the present invention.

In the drawings, each reference numeral denotes:

1. packaging bags; 10. a polypropylene skin layer; 11. an aluminum foil layer; 12. a dielectric resistant layer; 13. an inner layer of polypropylene; 14. an adhesive; 101. an outer end heat seal layer; 102. an intermediate polypropylene layer; 103. an inner end heat seal layer.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" 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 to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Example 1: the present embodiment is for providing a packaging film.

As shown in fig. 1, the packaging film provided by this embodiment includes a polypropylene surface layer 10, an aluminum foil layer 11, a dielectric-resistant layer 12, and a polypropylene inner layer 13, which are sequentially stacked, where the polypropylene surface layer 10 includes an outer end heat seal layer 101, a middle polypropylene layer 102, and an inner end heat seal layer 103, which are sequentially stacked toward the polypropylene inner layer 13, each adjacent two of the inner end heat seal layer 103, the aluminum foil layer 11, the dielectric-resistant layer 12, and the polypropylene inner layer 13 are bonded by an adhesive 14, and a friction coefficient of the outer end heat seal layer 101 is between 0.1 and 0.15.

In this embodiment, the outer end heat seal layer 101 has a surface friction coefficient of 0.1 to 0.15, a heat sealability of 3.5N or more, and an inner surface corona treatment of 38 dynes. The outer end heat seal layer 101 has good optical performance, good printing adaptability, good wear resistance and heat resistance, and higher strength and rigidity, and is convenient for the outer end heat seal layer 101 and the polypropylene inner layer 13 to be lapped and sewn.

In this embodiment, the friction coefficient is controlled to be 0.1 to 0.15 by adding a slipping agent to the outer end heat seal layer 101. But not limited thereto, in other embodiments, the control of the coefficient of friction between 0.1 and 0.15 may also be achieved by direct surface treatment or other conventional means.

In this embodiment, the adhesive 14 has poor flowability and high activity, and is required to have good processability and suitable mechanical strength for the aluminum film. The middle aluminum foil layer 11 is a base material, plays the roles of water resistance, light shielding and temperature resistance, has clean and bright surface and good plasticity, and can be processed into various shapes.

Meanwhile, as the semi-liquid substance of the adhesive 14 has solubility, swelling property and permeability, the anti-dielectric layer 12 is arranged on the inner side of the aluminum foil layer 11, so that the anti-dielectric layer 12 is closer to the adhesive 14, and an anti-dielectric effect is achieved. In this embodiment, the dielectric layer 12 is polyamide, commonly referred to as nylon. The nylon is subjected to double-sided corona treatment, and the surface tension of the nylon is greater than 48 mN/M.

Example 2: the present embodiment is directed to providing a package.

As shown in fig. 2, in the packaging bag provided by this embodiment, the packaging bag 1 is formed by rolling and packaging the packaging film in the above embodiment 1, when the packaging film is rolled and packaged, the polypropylene inner layer 13 is attached to the outer end heat sealing layer 101 and heat-sealed to make a cylindrical structure, and two ends of the cylindrical structure are respectively provided with an aluminum card for solid sealing.

In the embodiment, the packaging bag 1 is sealed into a sausage type by a common glass cement filling machine, two ends of the packaging bag are fastened by aluminum clips, the film can not be burst and the two ends of the packaging bag can be fastened in the film sliding and fastening process, and the adhesive 14 is better protected from the outside. The surface of the film is subjected to smooth treatment, so that a lower friction coefficient is achieved, the film is easy to slide, and the film cannot be pulled to be damaged during the binding. Polyurethane viscosity usually reaches 300 ten thousand MPS.S, this wrapping bag 1 can reach 0.1 through modification treatment surface friction coefficient, process 0.15 behind the finished product, let the aluminium membrane in the packaging process more smooth, not rupture of membranes, and the speed improves twice than ordinary aluminium membrane efficiency soon, when having reduced the damage of membrane in a large number on the punch card, still adopt thicker longer adhesive 14 of extensibility, avoid the colloid to contact sunshine and moisture, the shelf life of colloid promotes to 12 months from original 6 months at most, the ordinary membrane of ageing test only begins the solidification in 4 days two, and the ageing test of this wrapping bag 1 reaches 20 days and just begins the solidification phenomenon.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (5)

1. The utility model provides a packaging film, its characterized in that, packaging film is including the polypropylene top layer (10), aluminium foil layer (11), anti dielectric layer (12) and the polypropylene inlayer (13) that stack gradually the setting, polypropylene top layer (10) are including the orientation outer end heat seal layer (101), middle polypropylene layer (102) and inner heat seal layer (103) that set gradually are stacked to the direction of polypropylene inlayer (13), inner heat seal layer (103) aluminium foil layer (11) anti dielectric layer (12) with all bond through gluing agent (14) between every adjacent two-layer in polypropylene inlayer (13), the coefficient of friction of outer end heat seal layer (101) is between 0.1-0.15.

2. The packaging film according to claim 1, wherein a slip agent having a coefficient of friction between 0.1 and 0.15 is added to the outer end heat seal layer (101).

3. The packaging film according to claim 1, wherein the dielectric layer (12) is a polyamide.

4. The packaging film according to claim 1, wherein the dielectric resistant layer (12) is corona-treated on both sides and has a surface tension of more than 48 mN/M.

5. A packaging bag, characterized in that, the packaging bag (1) is formed by the packaging film rolling package according to any one of the claims 1-4, when the packaging film is rolled and packaged, the polypropylene inner layer (13) is attached to the outer end heat sealing layer (101) and is heat sealed to form a cylindrical structure, and two ends of the cylindrical structure are respectively provided with an aluminum card for solid sealing.

Images