Food safety sealing strip and take-out packaging bag

Abstract

The utility model relates to a food safety sealing strip and a take-out packaging bag, which belong to the technical field of food safety and comprise a first adhesive layer, a base material layer, a printing layer, a second adhesive layer and a release layer which are sequentially arranged from top to bottom, the base material layer is a transparent layer; the first adhesive layer covers a part of the first surface of the base material layer; the printing layer comprises a head starting area, a first blank area and a printing area, and the first blank area is arranged between the head starting area and the printing area; the second adhesive layer is arranged in the printing area; the width of the first blank area ranges from 0.5 mm to 1 mm. The adhesive tape has the beneficial effects that after the release layer is torn off, the first adhesive layer and the second adhesive layer are respectively adhered to the tongue opening and the bag body, after the adhesive tape is torn off by taking the head opening area as a starting point, the printing area is torn off, one part of a pattern of the printing area is reserved on the base material layer adhered to the tongue opening, the other part of the pattern of the printing area is reserved on the second adhesive layer adhered to the bag body, and the pattern cannot be recovered after being detached; and the packaging bag is prevented from being torn off in the conveying process.

Description

Technical Field

[0001] The utility model relates to the technical field of food safety, in particular to a food safety seal and a takeaway packaging bag. Background Art

[0002] As people's quality of life improves, convenience-oriented behaviors are on the rise. Express delivery, takeout, and document delivery have become indispensable conveniences. Currently, the sealing adhesive strips used for express delivery, takeout, and document delivery packaging are simple, double-sided, high-viscosity seals that can be opened and re-applied without leaving a trace. This creates a significant risk of items being opened during delivery, leading to problems such as loss, loss, and leaks during transportation. Furthermore, as discussed in the published patent CN117622695A, the current seals suffer from issues such as difficult-to-separate release films and adhesive overflow.

[0003] In view of this, there is an urgent need to develop a food safety seal and takeaway packaging bag to overcome the above-mentioned defects. Summary of the Invention

[0004] The purpose of the utility model is to disclose a food safety seal and a takeaway packaging bag.

[0005] The first object of the present invention is to provide a food safety seal.

[0006] The second object of the present invention is to provide a takeaway packaging bag.

[0007] To achieve the above first object of the invention, the present invention provides a food safety seal, comprising a first adhesive layer, a substrate layer, a printing layer, a second adhesive layer and a release layer arranged in order from top to bottom;

[0008] The substrate layer is a transparent layer;

[0009] The first adhesive layer covers a portion of the first surface of the substrate layer;

[0010] The printing layer includes a starting area, a first blank area and a printing area, wherein the first blank area is arranged between the starting area and the printing area;

[0011] The second adhesive layer is disposed in the printing area;

[0012] The width of the first blank area is 0.5mm-1mm;

[0013] The release layer is 2 mm to 5 mm wider than the substrate layer.

[0014] Preferably, the printing layer further includes a second blank area and a third blank area.

[0015] Preferably, the width of the second blank area and the third blank area are both 0.5mm-1mm.

[0016] Preferably, the starting area is the first printed negative layer.

[0017] Preferably, the starting area is a printing prompt layer.

[0018] Preferably, the first adhesive layer covers 40%-70% of the first surface of the substrate layer.

[0019] Preferably, the printing area includes a printed positive layer, a printed release layer and a printed negative layer.

[0020] Preferably, the substrate layer is one of BOPP film, OPP film, PET film or PP film.

[0021] Preferably, the release layer is one of a BOPP release layer, an OPP release layer, a PET release layer or a PP release layer.

[0022] Based on the same inventive principle, in order to achieve the above-mentioned second invention purpose, the present utility model provides a takeaway packaging bag, including a bag body and a tongue. The first adhesive layer of the food safety seal described in the first invention is adhered to the tongue, and the second adhesive layer of the food safety seal described in the first invention is adhered to the bag body.

[0023] Compared with the prior art, the beneficial effects of this embodiment are:

[0024] After the release layer of the food safety seal of the utility model is torn off, the first adhesive layer and the second adhesive layer are respectively pasted on the tongue and the bag body. After tearing with the starting area as the starting point, the printed area is torn off, and a part of the pattern of the printed area remains on the base material layer pasted on the tongue, and the other part remains on the second adhesive layer pasted on the bag body. Once opened, it cannot be restored, which ensures that the express delivery, take-out, and document delivery packaging bags are not torn during the transportation process. Once torn, they will be easily discovered; in addition, the release layer is 2mm-5mm wider than the base material layer, so that the release layer is easy to identify and tear off, which is convenient for use; the first blank area is arranged between the starting area and the printing area, so that if a small amount of overflow occurs from the printing area and the second adhesive layer, the starting area will not be contaminated. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a cross-sectional view of the food safety seal of the present invention.

[0026] Figure 2 This is a cross-sectional view of the food safety seal of the utility model in a cut state.

[0027] Figure 3 This is a schematic diagram of the sealing process of the packaging bag of the present invention.

[0028] Figure 4 This is a top view of the food safety seal of the utility model.

[0029] Figure 5 This is a schematic diagram of the food safety seal of the utility model in the torn state.

[0030] Among them, 1. First adhesive layer; 2. Base material layer; 21. First surface; 211. Transparent observation window; 22. Fourth blank area; 3. Printing layer; 31. Starting area; 32. First blank area; 33. Printing area; 331. Printed positive layer; 332. Printed release layer; 333. Printed negative layer; 334. Gold oil layer; 34. Second blank area; 35. Third blank area; 4. Second adhesive layer; 5. Release layer; 6. Bag body; 61. Bag opening; 7. Tongue opening. DETAILED DESCRIPTION

[0031] The present invention is described in detail below with reference to the various embodiments shown in the accompanying drawings. However, it should be noted that these embodiments are not limitations of the present invention, and any equivalent transformations or substitutions in functions, methods, or structures made by ordinary technicians in this field based on these embodiments are all within the scope of protection of the present invention.

[0032] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0033] Example 1

[0034] See also Figure 1 and Figure 2 , this embodiment discloses a specific implementation of a food safety seal.

[0035] See also Figure 1 and Figure 2, a food safety seal, comprising a first adhesive layer 1, a substrate layer 2, a printing layer 3, a second adhesive layer 4 and a release layer 5 arranged in sequence from top to bottom, the substrate layer 2 is one of BOPP film, OPP film, PET film or PP film, and the release layer 5 is one of BOPP release layer, OPP release layer, PET release layer or PP release layer; the substrate layer 2 is a transparent layer; the first adhesive layer 1 covers a part of the first surface 21 of the substrate layer 2, and the first adhesive layer 1 covers 40%-70% of the width of the first surface 21 of the substrate layer 2; the printing layer 3 includes a starting area 31, a first blank area 32 and a printing area 33, and the first blank area 32 is arranged between the starting area 31 and the printing area 33; the second adhesive layer 4 is arranged in the printing area 33; the width of the first blank area 32 is 0.5mm-1mm; the release layer 5 is 2mm-5mm wider than the substrate layer 2.

[0036] Specifically, see Figure 1 In order to facilitate identification and tearing off the release layer 5, the release layer 5 is 2mm-5mm wider than the substrate layer 2. When tearing off the release layer 5, the release layer 5 can be easily torn off from the second adhesive layer 4; see Figure 3 When using the food safety seal, the packaging bag for express delivery, takeout, and documents has a bag body 6 and a tongue 7. The tongue 7 is folded to seal the opening 61 of the bag body 6, and the release layer 5 is torn off. The first adhesive layer 1 is attached to the tongue 7, and the second adhesive layer 4 is attached to the bag body 6. If the packaging bag is torn open in advance during delivery, that is, when it is torn open from the starting area 31, part of the pattern of the printed area 33 remains on the substrate layer 2 attached to the tongue 7, and the other part remains on the second adhesive layer 4 attached to the bag body 6. Once the bag is opened, it cannot be restored. Since the substrate layer 2 is a transparent material, and the first adhesive layer 1 covers a part of the first surface 21 of the substrate layer 2, the first surface 21 has a transparent observation window 211. The transparent observation window 21 1 is the part without the first adhesive layer 1 and the starting area 31; even if you try to restore it, because of the transparent substrate layer 2, you can still observe the tearing marks from the transparent observation window 211 of the substrate layer 2, thereby ensuring that the express, take-out, and document delivery packaging bags are not torn during transportation. Once torn, they will be easily discovered; the second adhesive layer 4 is arranged in the printing area 33, and there is no adhesive layer on the surface of the starting area 31. The starting area is the starting area for tearing, and the absence of the adhesive layer makes it easy to tear the starting area 31; the first blank area 32 is arranged between the starting area 31 and the printing area 33. Even if a small amount of overflow occurs between the printing area 33 and the second adhesive layer 4, it will not contaminate the starting area 31 to prevent the starting area 31 from sticking and making it inconvenient to open.

[0037] See also Figure 2In the process of producing food safety seals, the following steps are performed: S1: first, a printing layer 3 is set on the entire roll of substrate layer 2; S2: a first adhesive layer 1 is coated on the first surface 21 of the substrate layer 2, and a second adhesive layer 4 is coated on the surface of the printing layer 3; S3: along Figure 2 The dotted line (cutting line L) is cut; S4; the cut adhesive strip is compounded on the release layer 5 to form Figure 1 The food safety seal is produced as described. During slitting, one side of the slitting line L is the starting area 31 of one seal, and the other side is the first adhesive layer 1, the printing area 33, and the second adhesive layer 4 of another seal; the printing layer 3 of this embodiment also includes a second blank area 34 and a third blank area 35, and the second blank area 34 and the third blank area 35 are arranged on both sides of the printing layer 3, and a fourth blank area 22 is also arranged on one side of the first adhesive layer 1, and the widths of the second blank area 34, the third blank area 35, and the fourth blank area 22 are all 0.5mm-1mm. The existence of the second blank area 34, the third blank area 35, and the fourth blank area 22 ensures that the slitting line L is still in the blank area even if a slight deviation occurs. Otherwise, the slitting line L may be in the starting area 31 or the printing area 33 of two adjacent seals, resulting in uneven segmentation of the adjacent seals, that is, causing the starting area 31 of one seal to be cut to the adjacent seal, or causing the printing area 33 of one seal to be cut to the adjacent starting area 31.

[0038] See also Figure 4 The starting area 31 is the first printing negative layer, and the pattern is printed in the negative state, such as Figure 4 The text "OPEN HERE" shown has no ink layer itself, while other areas are fully printed to form the first printed negative layer of the starting area 31. The text pattern "OPEN HERE" forms a printed prompt layer, making it easy for users to identify the opening position.

[0039] See also Figures 1 to 5The working principle of the food safety seal is as follows: the printing area 33 includes a printed positive layer 331, a printed release layer 332 and a printed negative layer 333. A gold oil layer 334 is also printed on the surface of the printed negative layer 333. The formation process of the printing area 33 is as follows: S1, forming a printed positive layer 331 on the substrate layer 2 by a printing process; S2, forming a printed release layer 332 on the surface of the printed positive layer 331 by a printing process; S3, forming a printed negative layer 333 on the printed release layer 332 by a printing process; S4, forming a gold oil layer 334 on the printed negative layer 333 by a printing process. The material of the gold oil layer 334 is selected from transparent gold oil ink. The gold oil layer 334 can form a film on the surface of the printed negative layer 333, which separates the printed negative layer 333 and the second adhesive layer 4 and protects the printed negative layer 333. After the above steps S1 to S4, when the printed layer 3 is torn off, the printed release layer 332 is used as the separation basis, and the printed positive layer 331 remains on the substrate layer 2 adhered to the tongue 7, and the printed negative layer 333 remains on the second adhesive layer 4 adhered to the bag body 6. Once the packaging is removed, it cannot be restored. Since the substrate layer 2 is a transparent material and the first adhesive layer 1 covers a part of the first surface 21 of the substrate layer 2, a transparent observation window 211 is left on the first surface 21. Even if an attempt is made to restore the packaging, due to the transparency of the substrate layer 2, the tearing traces can still be observed through the transparent observation window 211 of the substrate layer 2, thereby ensuring that the express delivery, takeout, and document delivery packaging bags are not torn during transportation, and once torn, they will be easily discovered.

[0040] Example 2

[0041] See also Figures 3 to 5 This embodiment discloses a specific implementation of a takeout packaging bag.

[0042] Takeaway bags, see Figures 3 to 5 , including a bag body 6 and a tongue 7. The takeaway is placed into the bag body 6 through the opening 61 of the bag body 6, and then the tongue 7 is folded over so that the tongue 7 preliminarily seals the bag opening 61. After tearing off the release layer 5 of the food safety seal of Example 1, the first adhesive layer 1 of the food safety seal of Example 1 is adhered to the tongue 7, and the second adhesive layer 4 of the food safety seal of Example 1 is adhered to the bag body 6, so that the bag opening 61 is completely sealed along the tongue 7. During the transportation of the takeaway, once the bag opening 61 is torn, it cannot be restored, thereby ensuring the safety of the takeaway during the transportation process.

[0043] The takeaway packaging bag disclosed in this embodiment has the same technical solutions as those in the first embodiment. Please refer to the description in the first embodiment and will not be repeated here.

Claims

1. Food safety seal, characterized in that: It includes a first adhesive layer, a base material layer, a printing layer, a second adhesive layer and a release layer arranged in order from top to bottom; The substrate layer is a transparent layer; The first adhesive layer covers a portion of the first surface of the substrate layer; The printing layer includes a starting area, a first blank area and a printing area, wherein the first blank area is arranged between the starting area and the printing area; The second adhesive layer is disposed in the printing area; The width of the first blank area is 0.5mm-1mm; The release layer is 2 mm to 5 mm wider than the substrate layer; the printing layer further includes a second blank area and a third blank area; The width of the second blank area and the third blank area are both 0.5mm-1mm; A fourth blank area is provided on one side of the first adhesive layer, and the width of the fourth blank area (22) is 0.5 mm to 1 mm.

2. The food safety seal according to claim 1, wherein: The starting area is the first printed negative layer.

3. The food safety seal according to claim 1, wherein: The starting area is a printing prompt layer.

4. The food safety seal according to claim 1, wherein: The first adhesive layer covers 40%-70% of the first surface of the substrate layer.

5. The food safety seal according to claim 1, wherein: The printing area includes a printing positive text layer, a printing release layer and a printing negative text layer.

6. The food safety seal according to claim 1, wherein: The substrate layer is one of BOPP film, OPP film, PET film or PP film.

7. The food safety seal according to claim 1, wherein: The release layer is one of a BOPP release layer, an OPP release layer, a PET release layer or a PP release layer.

8. Takeaway packaging bag, characterized in that: The bag comprises a bag body and a tongue, wherein the first adhesive layer of the food safety seal according to any one of claims 1 to 7 is adhered to the tongue, and the second adhesive layer of the food safety seal according to any one of claims 1 to 7 is adhered to the bag body.

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