Double-layer easy-to-tear packaging bag

Abstract

The utility model discloses a double-layer easy-to-tear packaging bag which comprises a packaging bag body, the packaging bag body is formed by compositing an inner layer film and an outer layer film, a half-frame-shaped first arc line is cut out of the outer layer film outside the packaging bag, a half-frame-shaped second arc line located in the first arc line is cut out of the inner layer film inside the packaging bag, and the second arc line is located in the first arc line. A bonding area is formed between the first arc line and the second arc line, the bonding area is coated with repeatable bonding glue before the inner-layer film and the outer-layer film are compounded, and permanent glue is adopted for other compounding parts of the inner-layer film and the outer-layer film except for the bonding area; a label is formed by tearing along the first arc line, and an opening in the direction of a second arc line is formed in the packaging bag body. According to the packaging bag, the inner-layer film and the outer-layer film are compounded, and the first arc line and the second arc line are cut open, so that the label and the opening which are integrated with the packaging bag can be formed, waste of materials is avoided, meanwhile, the label does not need to be additionally mounted, and the cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging bags, and more particularly to a double-layer easy-to-tear packaging bag. Background Art

[0002] Packaging bags are a common packaging material used to protect the safety of goods during transportation. They can also beautify products and enhance brand image.

[0003] When packaging bags for products like food and wet wipes, they typically have an opening and a re-adhesive label installed on one side to seal the opening. This method involves cutting excess film to open the bag, wasting material, and installing the label increases costs. Utility Model Content

[0004] In view of the problems existing in the prior art, the purpose of the present invention is to provide a double-layer easy-tear packaging bag that can be integrally formed with a label during processing and does not waste material when opening.

[0005] To address the aforementioned issues, the present invention employs the following technical solution: A double-layer, easy-to-tear packaging bag comprises a packaging bag body, the packaging bag body being formed by a composite inner film and an outer film. A first semi-frame-shaped arc is cut from the outer film on the outside of the packaging bag, and a second semi-frame-shaped arc is cut from the inner film on the inside of the packaging bag, located within the first arc. A bonding area is formed between the first and second arcs, the bonding area being coated with a reusable adhesive before the inner and outer films are composited, and the composite portions of the inner and outer films, excluding the bonding area, are coated with permanent adhesive. A label is formed by tearing along the first arc, and an opening is formed in the packaging bag body along the second arc.

[0006] Preferably, one end of the label is a tear-off end, and the other end is a positioning end integrated with the packaging bag. The first arc extends outward from the tear-off end to form two spaced extension lines to form a tear-proof strip on the label.

[0007] Preferably, a raised tearing piece is provided in the middle of the tearing end, and two tear-proof strips are provided and located on both sides of the tearing piece.

[0008] Preferably, the outer film is made of PET material, and the inner film is made of VMCPP material.

[0009] Preferably, the first arc and the second arc are both in a half-runway shape.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] (1) The packaging bag body is formed by laminating the inner film and the outer film and cutting the first arc and the second arc, thereby forming a label integrated with the packaging bag and an opening, which does not cause waste of materials and does not require the installation of a separate label, thereby reducing costs.

[0012] (2) By coating the adhesive area with reusable adhesive and the non-adhesive area with permanent adhesive, the inner film and the outer film can be composited and the label can be re-adhesive. The design is simple and reasonable and easy to process. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a diagram of the utility model label in an untorn state;

[0014] Figure 2 This is a top view of the label of the utility model after it is torn open;

[0015] Figure 3 It is a partial cross-sectional view of the utility model;

[0016] Figure 4 This is a partial cross-sectional view of the label of the present invention after being torn open.

[0017] Description of the numbers in the figure:

[0018] 1. Packaging bag body; 2. Inner film; 3. Outer film; 4. First arc line; 5. Second arc line; 6. Adhesive area; 7. Label; 8. Opening; 9. Extension line; 10. Anti-tear strip; 11. Tear tab. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] refer to Figure 1-4 A double-layer easy-to-tear packaging bag includes a packaging bag body 1, which is composed of an inner film 2 and an outer film 3. The outer film 3 is cut into a semi-frame-shaped first arc 4 on the outside of the packaging bag, and the inner film 2 is cut into a semi-frame-shaped second arc 5 located within the first arc 4 on the inside of the packaging bag, and then a bonding area 6 is formed between the first arc 4 and the second arc 5. The bonding area 6 is coated with reusable adhesive before the inner film 2 and the outer film 3 are composited, and the other composite parts of the inner film 2 and the outer film 3 except the bonding area 6 are made of permanent adhesive; a label 7 is formed by tearing along the first arc 4, and an opening 8 is formed on the packaging bag body 1 along the second arc 5.

[0021] It is understood that the outer film 3 and the inner film 2 are composite materials of the packaging bag body 1, for example, the outer film 3 and the inner film 2 are PET and PE, NY and PE, BOPP and PE, VMCPP and PE, etc., but not limited thereto. The first arc 4 penetrates the outer film 3 but not the inner film 2, and the second arc 5 penetrates the inner film 2 but not the outer film 3. The semi-frame shape of the two can be semi-elliptical, semi-square, semi-racetrack, etc., but not limited thereto. Figure 2 and Figure 4 The adhesive area 6 is partially located on the inner film 2 exposed by the packaging bag body 1, and partially on the outer film 3 exposed at the bottom of the label 7, with the two sections perfectly aligned. Re-stickable adhesive allows for repeated bonding of the label 7, and can be, for example, 3M Command adhesive or silicone-based adhesive, but is not limited to these. Permanent adhesive is adhesive that is difficult to tear after bonding the inner film 2 and outer film 3, and can be, for example, epoxy resin adhesive, polyurethane adhesive, or cyanoacrylate adhesive, but is not limited to these.

[0022] With this arrangement, the label 7 can be integrally formed on the packaging bag, eliminating the need for a separate attachment. The opening 8 is formed on the label 7, eliminating material waste. During use, the label 7 is formed by tearing along the first arc 4. During tearing, the opening 8 is formed along the second arc 5. The reusable adhesive applied to the adhesive area 6 allows for repeated adhesion of the label 7.

[0023] In some embodiments, the label 7 has a tear-off end at one end and a positioning end integral with the packaging bag at the other. Two spaced extension lines 9 extend outward from the first arc 4 near the tear-off end, forming a tear-resistant strip 10 on the label 7. As will be appreciated, since the first arc 4 acts on the outer film 3, the extension lines 9 also act on the outer film 3, and the resulting tear-resistant strip 10 is also formed on the outer film 3. Thus, when tearing the label 7, the tear-resistant strip 10 must be torn to fully open the opening 8. The tear-resistant strip 10 acts as a pull, thereby restricting the opening of the label 7 and preventing accidental tearing. It also serves to identify whether the packaging bag is fully opened. Furthermore, a raised tear tab 11 is provided in the middle of the tear-off end. Two tear-resistant strips 10 are provided, located on either side of the tear-resistant strip 11. The raised tear-resistant strip 11 facilitates pinching with fingers, making it easier to tear the label 7. The anti-tear strips 10 are arranged on both sides of the tear piece 11, thereby limiting the tearing of the label 7 and ensuring the reliability of the anti-accidental tearing effect.

[0024] For example, the outer film 3 is made of PET, and the inner film 2 is made of VMCPP. As will be appreciated, the outer film 3 made of PET has high mechanical strength and toughness, can withstand significant external forces without breaking, and is suitable for long-distance transportation and storage. Furthermore, as the outer layer, it offers excellent printing quality. The inner film 2 made of VMCPP offers excellent barrier properties, chemical resistance, and heat-sealing properties.

[0025] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any person skilled in the art who, within the technical scope disclosed in the present invention, makes equivalent substitutions or modifications based on the technical solutions and improved concepts of the present invention shall be covered by the scope of protection of the present invention.

Claims

1. A double-layer easy-tear packaging bag, comprising a packaging bag body, characterized in that: The packaging bag body (1) is composed of an inner film (2) and an outer film (3). A semi-frame-shaped first arc (4) is cut out of the outer film (3) on the outside of the packaging bag, and a semi-frame-shaped second arc (5) located within the first arc (4) is cut out of the inner film (2) on the inside of the packaging bag, thereby forming a bonding area (6) between the first arc (4) and the second arc (5). The bonding area (6) is coated with a reusable adhesive before the inner film (2) and the outer film (3) are bonded together. Permanent adhesive is used for the other bonded parts of the inner film (2) and the outer film (3) except the bonding area (6). A label (7) is formed by tearing along the first arc (4), and an opening (8) is formed on the packaging bag body (1) along the second arc (5).

2. The double-layer easy-tear packaging bag according to claim 1, characterized in that: One end of the label (7) is a tear-off end, and the other end is a positioning end integrated with the packaging bag. The first arc (4) extends outward from the tear-off end to form two spaced extension lines (9) to form a tear-proof strip (10) on the label (7).

3. The double-layer easy-tear packaging bag according to claim 2, characterized in that: A raised tearing piece (11) is provided in the middle of the tearing end, and two tear-proof strips (10) are provided and are located on both sides of the tearing piece (11).

4. The double-layer easy-tear packaging bag according to claim 1, characterized in that: The outer film (3) is made of PET material, and the inner film (2) is made of VMCPP material.

5. The double-layer easy-tear packaging bag according to claim 1, characterized in that: The first arc (4) and the second arc (5) are both in the shape of a half runway.

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