CN111470170B - A packaging opening structure - Google Patents

Abstract

The present invention discloses a packaging opening structure, comprising a surface film (1), an adhesive layer (2) and an inner film (3); the adhesive layer is arranged between the surface film and the inner film; the adhesive layer is composed of an adhesive having adhesive properties at room temperature, a handle area (4) is arranged on the surface film, a built-in upper tangent line (5) is arranged in the handle area, two outer tangent lines (6) are arranged on both sides of the outer periphery of the handle area, the upper end points of the two outer tangent lines are in a shape of surrounding the upper tangent line, a handle (8) is arranged in the handle area, and the corresponding surface film portion after being pulled away from the upper tangent line forms the handle. The present invention can solve the problems of repeatable opening and airtightness on the one hand, and can easily distinguish whether the packaging structure has been opened relative to the factory settings on the other hand.

Description

A packaging opening structure

Technical Field

The invention relates to the field of packaging bags, in particular to a packaging opening structure.

Background Art

Packaging bags are low-cost and convenient, and are widely used for the transportation and storage of various foods and other consumer goods. Therefore, there are also various designs for packaging bags. However, in general, the various designs mainly solve the problem of the packaging degree and sealing of the packaging bag for the product.

In the prior art, the application number is 2017114645335, and the patent name is: A re-openable sealing structure, packaging container and preparation method. The recorded packaging structure can realize the re-opening of the packaging container, which is convenient for taking food or content items and storing remaining food or items; and while achieving the sealing of the packaging, it ensures that the contents are dry and fresh, which is very suitable for dry food. Although the above structure can be opened repeatedly, there is a problem of poor subsequent sealing due to repeated opening, and it is also easy to have problems such as handle breakage and unlimited elongation. At the same time, for a fully packaged product, if this design is adopted, when consumers purchase the product, it is difficult to tell whether the product has been opened or whether it is still sealed before leaving the factory.

Summary of the invention

The present invention provides a packaging opening structure, which solves the problem of repeatable opening and airtightness of the packaging opening structure on one hand, and can easily distinguish whether the packaging structure has been opened relative to the factory setting on the other hand.

In order to solve the above technical problems, the technical solution of the present invention is: a packaging opening structure, comprising a surface film, a sticky layer and an inner film; the sticky layer is arranged between the surface film and the inner film; the sticky layer is composed of an adhesive that is sticky at room temperature, a handle area is arranged on the surface film, a built-in upper tangent line is arranged in the handle area, both ends of the upper tangent line are exposed on the surface film, two external tangent lines are arranged on both sides of the periphery of the handle area, the upper end points of the two external tangent lines are exposed on the surface film, the upper end points of the two external tangent lines are in a shape of surrounding the upper tangent lines, an unclosed gap is arranged between the exposed two end points of the upper tangent line and the two external tangent lines, a handle is arranged in the handle area, and the corresponding surface film part after being pulled away from the upper tangent line forms the handle.

Preferably, a restriction line is provided at the bottom of the handle, the shape of the restriction line matches the handle, and the restriction line is located on the inner side of the two sections of the external tangent line.

Preferably, limiting positions are provided at both end points of the limiting line.

Preferably, two ends of the restriction line are bent inwardly toward each other to form the restriction position.

Preferably, a seal is provided inside the handle, and an opening is provided on the inner film, and the seal matches the opening.

Preferably, the surface film, the adhesive layer and the seal are sequentially in a trapezoidal structure.

Preferably, the middle part of the upper tangent line is located between the surface film and the adhesive layer or the upper tangent line is located between the adhesive layer and the inner film.

Preferably, the upper tangent line is in an arc shape or a straight line shape, and the upper end points of the two sections of the outer tangent lines surround the upper tangent line in a shape of a rectangle, an ellipse or a hook.

The beneficial effects achieved by the present invention are as follows: relative to the opening structure, the packaging opening structure of the present invention is provided with an upper tangent line and an outer tangent line, and a handle is formed by pulling the upper tangent line. The process of pulling the handle outward will break through the interval between the upper tangent line and the outer tangent line. Once the interval is broken, consumers can easily distinguish whether the packaging bag has been opened. Moreover, through the guiding effect of the outer tangent line, the handle will not change direction at will in the process of pulling outward, and will be pulled downward under the guidance of the outer tangent line. Moreover, the present invention is also provided with a restriction line and a restriction position, which can play a guiding role on the one hand, and can also ensure that the handle will not be infinitely elongated on the other hand, so as to ensure the use of the handle. At the same time, the present invention is provided with a seal on the handle and an opening on the inner film. The seal and the opening are matched to ensure a tight seal. The surface film, the adhesive layer and the seal are successively in a trapezoidal structure. The trapezoidal structure can ensure that the protruding part of the adhesive layer is attached to the inner film, so that the handle can be used multiple times and the seal and the opening can be tightly connected.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view of the package opening structure of the present invention, wherein the upper tangent line and the outer tangent line are arranged between the surface film and the adhesive layer.

FIG. 2 is a second perspective view of the package opening structure of the present invention, in which the upper tangent line and the outer tangent line are arranged between the adhesive layer and the inner film.

FIG. 3 is a third perspective view of the package opening structure of the present invention, in which the seal is directly arranged on the surface film.

FIG. 4 is a fourth perspective view of the package opening structure of the present invention, in which the seal is arranged on the adhesive layer.

FIG. 5 is a third perspective view of the package opening structure of the present invention, wherein the surface film, the adhesive layer and the seal are sequentially arranged in a trapezoidal structure.

FIG. 6 is a top view of the packaging opening structure of the present invention.

FIG. 7 is a cross-sectional view of the package opening structure of the present invention.

The numbers or letters in the figure represent the names of the corresponding components or process names: 1. Surface film; 2. Adhesive layer; 3. Inner film; 4. Handle area; 5. Upper tangent line; 6. Outer tangent line; 7. Interval; 8. Handle; 9. Seal; 10. Opening; 11. Limit line; 12. Limit position.

The drawings are only used for illustrative purposes and should not be construed as limitations on this patent. In order to better illustrate this embodiment, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted. The same or similar numbers correspond to the same or similar parts. The terms describing the positional relationship in the drawings are only used for illustrative purposes and should not be construed as limitations on this patent.

DETAILED DESCRIPTION

In order to facilitate understanding by those skilled in the art, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

Specific implementation method 1

As shown in Fig. 3 and Fig. 6, the packaging opening structure comprises a surface film 1, an adhesive layer 2 and an inner film 3; the adhesive layer 2 is arranged between the surface film 1 and the inner film 3; the adhesive layer 2 is composed of an adhesive having adhesive properties at room temperature, and a handle area 4 is arranged on the surface film 1, as shown in the dotted line frame in Fig. 6 and Fig. 7, that is, the handle area 4, and a built-in upper tangent line 5 is arranged in the handle area 4, and both ends of the upper tangent line 5 are exposed on the surface film 1, as shown in Fig. 6. The ends are exposed outside the handle area 4, and two sections of external tangent lines 6 are provided on both sides of the periphery of the handle area 4. The upper end points of the two sections of external tangent lines 6 are exposed on the surface film 1, and the upper end points of the two sections of external tangent lines 6 are in a shape of surrounding the upper tangent line 5. An unclosed gap 7 is provided between the two exposed end points of the upper tangent line 5 and the two sections of external tangent lines 6, as shown in the blank area in the circular circle in Figure 6. A handle 8 is provided in the handle area 4, and the corresponding part of the surface film 1 forms the handle 8 after being pulled away from the upper tangent line 5.

Specifically, a restriction line 11 is provided at the lower part of the handle 8, the shape of the restriction line matches the handle, and the restriction line 11 is located inside the two segments of the external tangent line 6, and a restriction position 12 is provided at the two ends of the restriction line 11, and the two ends of the restriction line 11 are bent inwardly to form the restriction position 12. Of course, the shape of the restriction position 12 can also be set to other shapes, not limited to the two ends bending inwardly to each other. As shown in FIG6, the restriction line can prevent the handle from exceeding the limit in the process of pulling it up, and can prevent the handle from being broken.

Specifically, a seal 9 is provided inside the handle 8, and an opening 10 is provided on the inner film 3, and the seal 9 matches the opening 10. The position of the opening 10 is not limited, and it can be directly provided on the inner film, as shown in FIG3, or it can be provided at a corresponding position after the surface film 1 and the adhesive layer 2 are connected, as shown in FIG4. In this embodiment, the opening is directly provided on the inner film, as shown in FIG3.

Specifically, the middle part of the upper tangent line 5 is located between the surface film 1 and the adhesive layer 2 or between the adhesive layer 2 and the inner film 3, as shown in Figures 1 and 3. In this embodiment, the middle part of the upper tangent line 5 is set between the surface film 1 and the adhesive layer 2, as shown in Figure 3.

Specifically, the upper tangent line 5 is in an arc or straight line shape, and the shape of the upper end points of the two segments of the external tangent line 6 surrounding the upper tangent line 5 is not limited to a rectangle, an ellipse, or a hook shape, as long as it can surround the upper tangent line, when the handle is pulled outward, it can guide the handle to be pulled downward along the external tangent line. In this embodiment, the upper end points of the two segments of the external tangent line 6 are in a hook shape, as shown in FIG6 .

Specific implementation method 2

Specific embodiment 2 is basically the same as specific embodiment 1, with the main difference that the surface film 1, the adhesive layer 2 and the seal 9 are in a trapezoidal structure, and the upper tangent line 5 is located between the adhesive layer 2 and the inner film 3, as shown in Figure 5. The trapezoidal structure has a step difference, which can ensure that the seam and the opening are more tightly connected.

Specific implementation method 3

Specific embodiment 3 is basically the same as specific embodiment 1, with the main difference that: no seal 9 is provided inside the handle 8, and no opening 10 is provided on the inner film 3, as shown in Figures 1, 2, and 7. The handle is directly attached to the adhesive layer or the handle is directly attached to the inner film through the adhesive layer. In this embodiment, it is directly attached to the adhesive layer, as shown in Figure 1.

Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims (4)

1. A packaging opening structure, which comprises a surface film (1), an adhesive layer (2) and an inner film (3); the adhesive layer (2) is arranged between the surface layer film (1) and the inner layer film (3); the adhesive layer (2) is composed of an adhesive with adhesiveness at normal temperature, and is characterized in that: a pull handle area (4) is arranged on the surface film (1), a section of built-in upper tangent line (5) is arranged in the pull handle area (4), two ends of the upper tangent line (5) are exposed on the surface film (1), two sections of external tangent lines (6) are arranged in two sides of the periphery of the pull handle area (4), the upper end points of the two sections of external tangent lines (6) are exposed on the surface film (1), the upper end points of the two sections of external tangent lines (6) are in a shape of surrounding the upper tangent line (5), an unclosed connection interval (7) is arranged between the two exposed end points of the upper tangent line (5) and the two sections of external tangent lines (6), a pull handle (8) is arranged in the pull handle area (4), and the corresponding surface film (1) after the pull handle (5) is pulled away is formed in part of the pull handle area (8).

A limiting line (11) is arranged at the lower part of the handle (8), the shape of the limiting line is matched with that of the handle, and the limiting line (11) is positioned at the inner sides of the two sections of the external cutting lines (6);

Limiting bits (12) are arranged at two end points of the limiting line (11);

The two ends of the limiting line (11) are mutually bent inwards to form the limiting position (12);

the handle (8) is internally provided with a seal (9), the inner film (3) is provided with an opening (10), and the seal (9) is matched with the opening (10).

2. The package opening arrangement according to claim 1, wherein: the surface film (1), the adhesive layer (2) and the seal (9) are sequentially in a trapezoid structure.

3. The package opening arrangement according to claim 1, wherein: the middle part of the upper tangent line (5) is positioned between the surface film (1) and the adhesive layer (2) or the upper tangent line (5) is positioned between the adhesive layer (2) and the inner film (3).

4. A package opening arrangement according to any one of claims 1-3, characterized in that: the upper tangent line (5) is arc-shaped or linear, and the upper end points of the two sections of the external tangent lines (6) encircle the upper tangent line (5) and are rectangular, elliptical or hook-shaped.