Sealing paper bag

Abstract

The utility model relates to the technical field of packaging bags, in particular to a sealing paper bag which comprises sheet-shaped paper, the sheet-shaped paper is obtained by cutting a sheet-shaped paper roll in the length direction of the sheet-shaped paper roll, a protruding sealing tongue is arranged on the upper cutting edge of the sheet-shaped paper, a notch is formed in the lower cutting edge of the sheet-shaped paper, and in the length direction of the sheet-shaped paper roll, a material is arranged at the notch of the previous sheet-shaped paper. The sealing tongue material is a next piece of sheet-shaped paper; the sheet-shaped paper is enclosed to form a paper bag body, the upper cutting edge of the sheet-shaped paper is enclosed to form an upper opening of the paper bag body, and the sealing tongue is used for sealing the upper opening; a lower opening of the paper bag body is defined by the lower cutting edge of the sheet-shaped paper, the lower opening of the paper bag body is folded and closed to form a bag bottom of the paper bag body, and the notch is covered by the folding part of the bag bottom. According to the paper bag, the sealing tongue is arranged at the bag opening of the paper bag body, and the sealing tongue is used for replacing a sealing label to limit opening of the bag opening; therefore, the packaging steps of workers are reduced, and the packaging efficiency of the workers is improved.

Description

Technical Field

[0001] This application relates to the field of packaging bag technology, and in particular to a sealing paper bag. Background Technology

[0002] When using paper bags to package products (clothes, coffee, tea, food, etc.), staff will place the products inside the paper bag and then affix a sealing label to the bag opening to seal it and prevent the products from falling out or being switched.

[0003] In existing technology, workers need to hold the opening of the paper bag with one hand and use the other hand to tear off the sealing label from the labeling machine and stick the sealing label to the sides of the bag opening to complete the packaging process. However, the packaging steps for these paper bags are cumbersome, which affects the work efficiency of the workers. Utility Model Content

[0004] To facilitate the packaging of products by staff, this application provides a sealing paper bag.

[0005] This application provides a sealing paper bag, which adopts the following technical solution:

[0006] A resealable paper bag includes sheet paper, which is obtained by sequentially cutting a sheet paper roll along its length. The upper cut edge of the sheet paper has a protruding sealing flap, and the lower cut edge of the sheet paper has a notch. Along the length direction of the sheet paper roll, the material at the notch of the previous sheet paper becomes the sealing flap material of the next sheet paper. The sheet paper is assembled to form a paper bag body. The upper cut edge of the sheet paper forms an upper opening of the paper bag body, and the sealing flap is used to seal the upper opening. The lower cut edge of the sheet paper forms a lower opening of the paper bag body. The lower opening of the paper bag body is folded closed to form the bottom of the paper bag body. The notch of the lower cut edge of the sheet paper is located inside the folded portion of the bottom of the bag, and the notch is covered by the folded portion of the bottom of the bag.

[0007] By adopting the above technical solution, a sealing tongue is set at the opening of the paper bag body, and the sealing tongue is used to replace the sealing label to restrict the opening of the bag; thereby reducing the packing steps of the staff and improving the packing efficiency; at the same time, restricting the position of the sealing tongue and the notch allows the paper bag body to be continuously cut from the sheet paper roll, reducing paper waste and saving resources and costs.

[0008] Optionally, it also includes a sealing assembly, which is disposed on the side of the sealing tongue near the upper opening; along the direction away from the sealing tongue, the sealing assembly sequentially includes an adhesive member and a protective member, the protective member being used to separate from the adhesive member, and the adhesive member being used to adhere to and seal the bag opening with the body of the paper bag body.

[0009] By adopting the above technical solution, the staff separates the protective component from the adhesive component, and then glues the adhesive component to the bag body to seal the bag opening, so that the staff can pack the paper bags.

[0010] Optionally, the sealing assembly includes a first self-adhesive layer disposed on the sealing tongue and a second self-adhesive layer disposed on the paper bag body, wherein the first self-adhesive layer and the second self-adhesive layer are bonded and fixed together.

[0011] By adopting the above technical solution, the first self-adhesive layer and the second self-adhesive layer are bonded and fixed, eliminating the need for multiple layers such as release paper and labels, and effectively achieving a more environmentally friendly sealing.

[0012] Optionally, the sealing tongue is further provided with an easy-tear portion, and an avoidance distance is provided between the easy-tear portion and the sealing assembly; the sealing tongue separates from the body of the paper bag along the easy-tear portion.

[0013] By adopting the above technical solution, users can more easily open the bag opening through the easy-tear part on the sealing tongue, and avoid tearing the paper bag body, so that the paper bag can be reused.

[0014] Optionally, the upper opening of the paper bag body is provided with a handle, the handle having a through hole for a hand to pass through and grasp; a clearance distance is provided between the sealing tongue and the handle.

[0015] By adopting the above technical solution, the paper bag also includes a handle, making it easier for users to take the paper bag.

[0016] Optionally, the sealing tongue has a decorative surface on the side away from the sealing component, the decorative surface being used to carry product and / or brand information.

[0017] By adopting the above technical solution, the decorative surface carries product and / or brand information, so that users can understand the merchant and product information.

[0018] Optionally, the shape of the sealing tongue can be any one of rectangle, semi-ellipse, semi-circle, etc.

[0019] By adopting the above technical solutions, the sealing tongue can be one of the following shapes: rectangular, semi-elliptical, or semi-circular, to adapt to different usage scenarios.

[0020] Optionally, the sheet of paper is provided with a plurality of main side fold lines in sequence along its length direction. The main side fold lines extend along the width direction of the sheet of paper. By folding each of the main side fold lines in sequence, the sheet of paper is divided into a connecting part, a first side pocket part, a front pocket part, a second side pocket part, and a rear pocket part. The connecting part is adhered to the rear pocket part to enclose and obtain the paper bag body.

[0021] The sheet of paper has a first fold line above the lower cut edge. The first fold line extends along the length of the sheet of paper. The lower cut edge of the sheet of paper is folded along the first fold line to form the bottom of the bag. The bottom of the bag is divided into a first side bag bottom, a front bag bottom, a second side bag bottom, and a rear bag bottom, respectively, corresponding to the paper bag body.

[0022] Along the length of the sheet paper, the bottom of the front bag and the bottom of the back bag are respectively provided with second fold lines. The second fold line, the main side fold line and the lower cutting edge form a triangular fold portion. The second fold line, the first fold line and the lower cutting edge form a trapezoidal fold portion. The triangular fold portion is provided on both sides of the trapezoidal fold portion. Based on the triangular fold portion, the bottom of the first side bag, the front bag, the bottom of the second side bag and the bottom of the back bag are folded and pasted together.

[0023] By adopting the above technical solution, the paper bag body is a square-bottomed bag, which makes it easier for workers to fold and glue the sheet paper into the paper bag body.

[0024] Optionally, the sealing tongue is provided on the rear bag portion, and the sealing tongue is used to adhere to the front bag portion; the notch is provided on the bottom of the rear bag.

[0025] By adopting the above technical solution, the sealing tongue is set at the front bag part, thereby using the sealing tongue to glue and fix the front bag part and the side bag part that are facing each other, so as to facilitate the workers to pack the paper bag and reduce the opening range of the paper bag body.

[0026] Optionally, the notch is provided on the triangular fold at the bottom of the back pocket, and the trapezoidal fold at the bottom of the back pocket covers the notch.

[0027] By adopting the above technical solution, the notch is set on the triangular fold, and the notch is set between the trapezoidal fold and the bottom of the first side bag; thereby improving the bonding strength of the bottom of the paper bag body, reducing the impact of the notch on the load-bearing capacity of the bottom of the bag, and improving the load-bearing capacity of the bottom of the bag.

[0028] Optionally, the notch is provided on the trapezoidal fold at the bottom of the back pocket, and the trapezoidal fold at the bottom of the front pocket covers the notch.

[0029] By adopting the above technical solution, the notch is set on the trapezoidal fold at the bottom of the back bag, so that the sealing tongue is located in the middle area of ​​the back bag; so that the workers can glue and fix the sealing tongue to the front bag and the back bag facing each other, and limit the opening range of the paper bag body.

[0030] Optionally, the sealing tongue is provided on the side of the first bag and / or the side of the second bag, and the sealing tongue is used to adhere and fix it to the front bag or the rear bag; the notch is provided on the bottom of the first side bag and / or the bottom of the second side bag, and the triangular fold covers the notch.

[0031] By adopting the above technical solution, the notch is set at the bottom of the first side bag and the bottom of the second side bag, so that the sealing tongue is located on the first side bag body and the second side bag body on both sides of the paper bag body; when the sealing tongue is glued and fixed to the front bag body or the rear bag body, the purpose of limiting the opening range of the paper bag body is achieved; at the same time, the user can open the opening of the paper bag body slightly to observe the product status inside the paper bag body.

[0032] In summary, this application includes at least one of the following beneficial technical effects:

[0033] 1. By setting a sealing tongue at the opening of the paper bag, the sealing tongue is used instead of a sealing label to limit the opening of the bag and prevent the contents from falling out. This reduces the number of steps for packing staff and improves their packing efficiency. At the same time, by restricting the position of the sealing tongue and the notch, the paper bag can be cut from sheet paper rolls continuously, reducing paper waste and saving resources and costs.

[0034] 2. The sealing tongue is set at the front bag part, so as to use the sealing tongue to glue and fix the front bag part and the side bag part that are facing each other, so as to facilitate the workers to pack the paper bag and reduce the opening range of the paper bag body.

[0035] 3. The notch is placed on the triangular fold, and the notch is placed between the trapezoidal fold and the bottom of the first side bag; thereby improving the bonding strength of the bottom of the paper bag body, reducing the impact of the notch on the load-bearing capacity of the bottom of the bag, and improving the load-bearing capacity of the bottom of the bag. Attached Figure Description

[0036] Figure 1 This is a schematic diagram illustrating the structure of the sealing paper bag in Example 1.

[0037] Figure 2 This is a top view of the paper bag body in Example 1.

[0038] Figure 3 This is a schematic diagram illustrating the paper cutting method in Example 1.

[0039] Figure 4This is a schematic diagram illustrating the location of the creases in the sheet paper in Example 1.

[0040] Figure 5 This is a schematic diagram illustrating the location of the creases in the sheet paper in Example 1.

[0041] Figure 6 This is a schematic diagram illustrating the first step of folding and forming the sheet paper in Example 1.

[0042] Figure 7 This is a schematic diagram illustrating the second step of folding the sheet paper into shape in Example 1.

[0043] Figure 8 This is a schematic diagram illustrating the third step of folding the sheet paper into shape in Example 1.

[0044] Figure 9 This is a schematic diagram illustrating the fourth step of folding the sheet paper into shape in Example 1.

[0045] Figure 10 This is a schematic diagram illustrating the relationship between the sealing tongue and the sealing component in Embodiment 1.

[0046] Figure 11 This is a schematic diagram illustrating the sealing component structure in Example 1.

[0047] Figure 12 This is a schematic diagram illustrating the shape of the sealing tongue in Example 2.

[0048] Figure 13 This is a schematic diagram illustrating the second step of folding the sheet paper into shape in Example 2.

[0049] Figure 14 This is a schematic diagram illustrating the position of the sealing tongue in Example 2.

[0050] Figure 15 This is a schematic diagram illustrating the second step of folding the sheet paper into shape in Example 4.

[0051] Figure 16 This is a schematic diagram illustrating the position of the sealing tongue in Example 4.

[0052] Figure 17 This is a schematic diagram illustrating the sealing tongue structure in Example 5.

[0053] Figure 18 This is a schematic diagram illustrating the sealing tongue structure in Example 6.

[0054] Figure 19 This is a schematic diagram illustrating the sealing component in Embodiment 7.

[0055] Explanation of reference numerals in the attached drawings: 1. Paper bag body; 11. Bag body; 12. Bag bottom; 2. Handle; 3. Handle strap; 4. Fixing paper; 5. Sheet paper; 51. Sealing flap; 52. Notch; 53. Connecting part; 54. First side bag; 541. First side bag body; 542. First side bag bottom; 55. Front bag; 551. Front bag body; 552. Front bag bottom; 56. Second side bag; 561. Second side bag body; 562. Second side bag bottom; 57. 571. Back pocket; 572. Back pocket body; 573. Back pocket bottom; 58. Trapezoidal fold; 59. Triangular fold; 61. Top cut edge; 62. Bottom cut edge; 63. Main side crease line; 64. Inner crease line; 65. First crease line; 66. Second crease line; 67. Third crease line; 7. Sealing assembly; 71. Adhesive component; 72. Protective component; 73. First self-adhesive layer; 74. Second self-adhesive layer; 8. Decorative surface; 9. Tear-off part; 91. Pull handle. Detailed Implementation

[0056] The following is in conjunction with the appendix Figure 1 -19 provides further details regarding this application.

[0057] Example 1

[0058] This application discloses a sealing paper bag. (See also...) Figure 1 The sealed paper bag includes a paper bag body 1 and a handle 2. The handle 2 is located at the upper opening of the paper bag body 1 and has a handle hole for the hand to pass through and grasp.

[0059] Reference Figure 1 and Figure 2 The paper bag body 1 includes an integrally formed bag body 11 and bag bottom 12. The bag body 11 includes a front bag body portion 551 and a rear bag body portion 571 disposed opposite to each other, and a first side bag body portion 541 and a second side bag body portion 561 disposed opposite to each other. The first side bag body portion, the front bag body portion 551, the second bag body portion 11 and the rear bag bottom portion 572 sequentially form the bag body 11. The bag bottom 12 is divided into a first side bag bottom portion 542, a front bag bottom portion 552, a second side bag bottom portion 562 and a rear bag bottom portion 572 corresponding to the bag body 11. In this embodiment, the paper bag body is a square-bottom bag; while in other embodiments, the paper bag body can also be a pointed-bottom bag.

[0060] Reference Figure 1The carrying handle 2 has two sets, which are respectively fixed to the front bag body 551 and the rear bag body 571. Taking the carrying handle 2 fixed to the front bag body 551 as an example, the structure of the carrying handle 2 will be explained. In this embodiment, the carrying handle 2 includes a carrying rope 3 and a fixing paper 4. The fixing paper 4 is glued and fixed to the bag body 11. The two ends of the carrying rope 3 are located between the front bag body 551 and the fixing paper 4, and the carrying rope 3 is glued and fixed to the front bag body 551 and the fixing paper 4. In this embodiment, the fixing paper 4 and the carrying rope 3 are fixed to the inner side wall of the front bag body 551; while in other embodiments, the fixing paper 4 and the carrying handle can also be fixed to the outer side wall of the front bag body 551.

[0061] The handle 3 can be round, square, or other shapes; in this embodiment, the handle 3 is round; in other embodiments, the handle 3 can also be square; in other embodiments, the paper bag may not have the handle 3 and the fixing paper 4.

[0062] Reference Figures 1 to 3 The paper bag body 1 is formed by folding and gluing together sheet paper 5. The sheet paper 5 is obtained by cutting a sheet paper roll along its length. In this embodiment, the conveying direction of the sheet paper 5 is from bottom to top. The upper cut edge 61 of the sheet paper 5 is provided with a protruding sealing tongue 51, and the lower cut edge 62 of the sheet paper 5 is provided with a notch 52. Along the length direction of the sheet paper roll, the material at the notch 52 of the previous sheet paper 5 becomes the material for the sealing tongue 51 of the next sheet paper 5; thus, the sheet paper roll does not generate excess waste, saving paper resources and reducing the production cost of the paper bag.

[0063] The upper cut edge 61 of the sheet paper 5 surrounds and forms the upper opening (also called the bag mouth) of the paper bag body 1. The sealing tongue 51 is used to seal the upper opening. At this time, there is a clearance distance between the sealing tongue 51 and the handle 2 to facilitate folding the sealing tongue 51. The lower cut edge 62 of the sheet paper 5 surrounds and forms the lower opening of the paper bag body 1. The lower opening of the paper bag body 1 is folded and closed to form the bottom 12 of the paper bag body 1. The notch 52 of the lower cut edge 62 of the sheet paper 5 is located inside the folded part of the bottom 12 and is covered by the folded part of the bottom 12.

[0064] Reference Figure 4 The sheet paper 5 has multiple main side fold lines 63 arranged sequentially along its length direction. The main side fold lines 63 extend along the width direction of the sheet paper 5. By folding each main side fold line 63 in sequence, the sheet paper 5 is divided into a connecting part 53, a first side pocket part 54, a front pocket part 55, a second side pocket part 56, and a rear pocket part 57. The connecting part 53 is glued to the rear pocket part 57 to enclose and obtain the paper bag body 1.

[0065] Reference Figure 4 and Figure 5An inner fold line 64 is provided in the middle area of ​​the first side pocket portion 54 and the second side pocket portion 56, and the inner fold line 64 is provided along the width direction of the sheet paper 5. The first side pocket portion 54 and the second side pocket portion 56 are folded along the inner fold line 64, so that the first side pocket portion 54 and the second side pocket portion 56 are stacked between the front pocket portion 55 and the side pocket portion.

[0066] Reference Figure 4 The sheet of paper 5 has a horizontal first fold line 65, which extends along the length of the sheet of paper 5. Along the first fold line 65, the area of ​​the sheet of paper 5 near the lower cut edge 62 is folded to form the bottom of the bag. The bottom of the bag is divided into a first side bottom 542, a front bottom 552, a second side bottom 562, and a rear bottom 572, respectively, corresponding to the paper bag body 1. Along the first fold line 65, the area of ​​the sheet of paper 5 near the upper cut edge 61 is folded to form the bag body 11. The bag body 11 is divided into a first side body portion 541, a front body portion 551, a second side body portion 561, and a rear body portion 571, respectively, relative to the paper bag body 1.

[0067] Reference Figure 5 Along the length of the sheet paper 5, second fold lines 66 are provided on both sides of the bottom of the front bag 552 and the bottom of the rear bag 572. The second fold line 66, the main side fold line 63 and the lower cutting edge 62 form a triangular folded part 59. The second fold line 66, the first fold line 65 and the lower cutting edge 62 form a trapezoidal folded part 58. The triangular folded part 59 is provided on both sides of the trapezoidal folded part 58. Based on the triangular folded part, the bottom of the first side bag 542, the front bag part 55, the bottom of the second side bag 562 and the bottom of the rear bag 572 are folded and pasted together.

[0068] Reference Figure 5 The sheet paper 5 is provided with a third fold line 67, which extends along the length of the sheet paper 5. The third fold line 67 is located on the side of the first fold line 65 near the upper cut edge 61. The intersection of the second fold line 66 on the bottom of the front bag 552 and the bottom of the side bag is located at the third fold line 67. The third fold line 67 is used to fold the front bag portion 55 or the rear bag portion 57 so that the bottom 12 of the paper bag body 1 is parallel to the bag body 11.

[0069] It is worth noting that the main side fold line 63, inner fold line 64, first fold line 65, second fold line 66, and third fold line 67 on the sheet paper 5 can be formed by stamping with mechanical equipment; subsequently, the sheet paper 5 is folded and glued along several fold lines to form the paper bag body 1. To demonstrate the folding and gluing method of the paper bag body 1, Figure 5 Different areas of the bottom 12 of the bag are filled with different filler blocks to distinguish them.

[0070] In the prior art, there are several ways to fold and glue sheet paper 5 into paper bag body 1. This application does not limit the specific folding method of sheet paper 5. This embodiment discloses a folding and gluing method of sheet paper 5 to facilitate understanding of the solution of this application by those skilled in the art.

[0071] Reference Figure 7 The connecting portion of the sheet paper 5 is glued and fixed to the rear bag portion 57 to form a sheet-like cylindrical structure; in the view shown in the accompanying drawings of this specification, the rear bag portion 57 covers the front bag portion 55. Subsequently, the sheet paper 5 is folded inward along the second fold line 66; at this time, the bottom 572 of the rear bag is located on the side of the third fold line 67 closer to the upper cut edge 61, and the bottom 552 of the front bag is located on the side of the third fold line 67 away from the upper cut edge 61.

[0072] Reference Figure 8 The bottom of the back bag 572 is folded along the first crease line 65 toward the bottom of the first side bag 542, and the triangular folded portions 59 on both sides of the bottom of the back bag 572 are respectively attached to the bottom of the first side bag 542 and the bottom of the second side bag 562; and the triangular folded portions 59 are glued and fixed to the bottom of the first side bag 542 and the bottom of the second side bag 562.

[0073] Reference Figure 9 The bottom of the front pocket 552 is folded along the first crease line 65 towards the bottom of the rear pocket 572. The triangular folded portions 59 on both sides of the bottom of the front pocket 552 are respectively attached to the bottom of the first side pocket 542 and the bottom of the second side pocket 562; and the triangular folded portions 59 are glued and fixed to the bottom of the first side pocket 542 and the bottom of the second side pocket 562. The trapezoidal folded portion 58 of the bottom of the front pocket 552 is attached to the trapezoidal triangular folded portion 59 of the bottom of the rear pocket 572 and glued and fixed.

[0074] Reference Figure 1 and Figure 9 After folding and gluing the sheet paper 5, the sheet paper 5 is opened from the inside to form the paper bag body 1.

[0075] Reference Figures 5 to 9 In this embodiment, the notch 52 is provided on the bottom 572 of the rear bag, and the sealing tongue 51 is provided on the body 571 of the rear bag; thus, when the sheet paper 5 is folded and glued into the paper bag body 1, the sealing tongue 51 is glued and fixed to the front bag body 551. That is, the sealing tongue 51 is used to restrict the position of the front bag body 551 and the rear bag body 571, so as to restrict the opening of the paper bag body 1.

[0076] Reference Figures 5 to 9 Specifically, in this embodiment, the notch 52 is provided on the trapezoidal folded portion 58 of the bottom of the rear bag 572. When the bottom of the front bag 552 and the bottom of the rear bag 572 are folded and glued together, the trapezoidal folded portion 58 of the bottom of the front bag 552 covers the notch 52 on the bottom of the rear bag 572.

[0077] Reference Figure 1 and Figure 10 The sealing tongue 51 is located in the middle area of ​​the back bag body 571, and there is a clearance between the sealing tongue 51 and the handle 3 to facilitate the folding of the sealing tongue 51.

[0078] It is worth noting that the biggest difference between the paper bag folding method in this embodiment and the paper bag folding method in the prior art is that after the bottom of the sheet paper 5 is folded and glued, there will be a gap 52 covering the bottom of the front bag 552 or the bottom of the side bag, so that the bottom 12 of the paper bag is a continuous planar structure, thereby improving the load-bearing capacity of the bottom 12.

[0079] Reference Figure 10 and Figure 11 The paper bag also includes a sealing component 7, which is adhered to the sealing tongue 51. The sealing component 7 is used to adhere to the bag body 11 to seal the bag opening, thereby limiting the opening of the paper bag body 1.

[0080] Reference Figure 11 Along the direction away from the sealing tongue 51, the sealing assembly 7 sequentially includes an adhesive member 71 and a protective member 72. The protective member 72 is used to separate from the adhesive member 71, and the adhesive member 71 is used to bond and seal the bag opening to the bag body 11. A tear-off structure is provided between the outer edge of the protective member 72 and the outer edge of the adhesive member 71 to facilitate the separation of the protective member 72 from the adhesive member 71 by the operator.

[0081] In this embodiment, the adhesive component 71 is a hot melt adhesive, water-based adhesive, or other adhesive layer, and the protective component 72 is a release paper, non-woven fabric, plastic film, or other similar material. In this embodiment, the protective component 72 is release paper. After the worker finishes packaging the product with the paper bag, they tear open the release paper and then adhere the adhesive layer to the bag body 11 to seal the bag opening, thus completing the sealing of the paper bag.

[0082] Reference Figure 11 The sealing flap 51 has a decorative surface 8 on the side away from the sealing component 7. This decorative surface 8 carries product and / or brand information. In this embodiment, product information or other patterns are printed directly on the decorative surface 8 of the sealing flap 51; the pattern information on the decorative surface 8 can complement the pattern on the front bag body 551. In other embodiments, the decorative surface 8 can also be formed by adhering a sticker printed with product or brand information / patterns.

[0083] Reference Figure 12 The sealing tongue 51 can be any shape, such as a rectangle, a semi-ellipse, or a semi-circle. In this embodiment, the sealing tongue 51 is rectangular. In other embodiments, the sealing tongue 51 can be semi-elliptical, semi-circular, or other shapes.

[0084] The implementation principle of a sealing paper bag in this application embodiment is as follows:

[0085] Reference Figure 1 and Figure 9 By setting a sealing tongue 51 at the opening of the paper bag body 1, the sealing tongue 51 replaces the sealing label to restrict the opening of the bag; thereby reducing the number of packing steps for workers and improving their packing efficiency. At the same time, this application restricts the position of the sealing tongue 51 and the notch 52, so that the sheet paper 5 folded into the paper bag body 1 can be continuously cut from the sheet paper roll, reducing paper waste and saving resources and costs.

[0086] Reference Figure 5 and Figure 9 The notch 52 is set on the trapezoidal fold 58 at the bottom 572 of the back bag, so that the sealing tongue 51 is located in the middle area of ​​the back bag body 571; so that the staff can attach the sealing tongue 51 to the front bag body 551 facing each other to seal the bag opening, thereby limiting the range of the bag opening.

[0087] In this embodiment, the number of sealing tongues 51 is one; while in other embodiments, the number of sealing tongues 51 can be two, three, or other numbers.

[0088] Example 2

[0089] The difference between this embodiment 2 and embodiment 1 is that the shape of the sealing tongue 51 is different.

[0090] Referring to Figure c in the figure, the sealing tongue 51 and the notch 52 are semi-elliptical in shape.

[0091] Referring to Figure d in the figure, the sealing tongue 51 and the notch 52 are semi-circular in shape.

[0092] Example 3

[0093] The difference between this embodiment 3 and embodiment 1 is that the notch 52 is positioned differently at the bottom 572 of the back pocket.

[0094] Reference Figure 13 and Figure 14 In this embodiment, the notch 52 is provided at the triangular fold 59, and the trapezoidal fold 58 covers the notch 52.

[0095] The implementation principle of a sealing paper bag in this application embodiment is as follows:

[0096] Reference Figure 13 and Figure 14The notch 52 is set on the triangular fold 59. When the bottom of the rear bag 572 is bonded and fixed to the bottom of the first side bag 542, the notch 52 is set between the trapezoidal fold 58 of the bottom of the rear bag 572 and the bottom of the first side bag 542. This improves the bonding strength between the bottom of the rear bag 572 and the bottom of the first side bag 542, reduces the impact of the notch 52 on the load-bearing capacity of the bag bottom 12, and improves the load-bearing capacity of the bag bottom 12.

[0097] Example 4

[0098] The difference between this embodiment 4 and embodiment 1 is that the notch 52 is positioned differently at the bottom of the bag 12.

[0099] Reference Figure 15 and Figure 16 In this embodiment, the sealing tongue 51 is provided on the first side bag body 541 and the second side bag body 561, and the notch 52 is provided on the bottom of the first side bag 542 and the bottom of the second side bag 562.

[0100] The implementation principle of a sealing paper bag in this application embodiment is as follows:

[0101] Reference Figure 15 and Figure 16 The notch 52 is set on the bottom of the first side bag 542 and the bottom of the second side bag 562, so that the sealing tongue 51 is located on the first side bag body 541 and the second side bag body 561 on both sides of the paper bag body 1; after the sealing tongue 51 is bonded to the front bag body 551 to seal the bag opening, the opening range of the paper bag body 1 is limited; at the same time, the user can open the bag opening of the paper bag body 1 slightly to observe the product status inside the paper bag body 1.

[0102] Example 5

[0103] The difference between Example 5 and Example 1 is as follows:

[0104] Reference Figure 17 The sealing tongue 51 is also provided with an easy-tear part 9, which is located on the side of the sealing tongue 51 near the rear bag body 571, and there is a clearance distance between the easy-tear part 9 and the sealing component 7.

[0105] Reference Figure 17 After the sealing component 7 is bonded to the front bag body 551 to seal the bag opening, the sealing tongue 51 separates from the rear bag body 571 along the easy-tear portion 9, and the sealing tongue 51 is bonded to the front bag body 551. That is, the user can more conveniently open the bag opening through the easy-tear portion 9 on the sealing tongue 51, and avoid tearing the paper bag body 1, so that the paper bag can be reused.

[0106] In this embodiment, the easy-tear part 9 is provided with a tear line to facilitate the user to separate the sealing tongue 5 from the back bag body 571.

[0107] Example 6

[0108] The difference between Example 6 and Example 5 is that the structure of the tear-off part 9 is different.

[0109] Reference Figure 18 In this embodiment, tear lines are provided on both sides of the easy-tear part 9 along the direction away from the rear bag body 571, and a lifting ear 91 protruding from the main body of the sealing tongue 51 is provided at one end of the easy-tear part 9. The lifting ear 91 is used for the user to squeeze so as to separate the sealing tongue 51 from the rear bag body 571.

[0110] Example 7

[0111] The difference between this embodiment 7 and embodiment 1 is that the structure of the sealing component 7 is different.

[0112] Reference Figure 19 In this embodiment, the sealing assembly 7 includes a first self-adhesive layer 73 disposed on the sealing tongue 51 and a second self-adhesive layer 74 disposed on the front bag body 551. The first self-adhesive layer 73 and the second self-adhesive layer 74 can be cold-sealing adhesive or pressure-sensitive adhesive, and adhesion only occurs when the first self-adhesive layer 73 comes into contact with the second self-adhesive layer 74.

[0113] Under normal conditions, neither the first self-adhesive layer 73 nor the second self-adhesive layer 74 has any adhesive properties. However, when the first self-adhesive layer 73 and the second self-adhesive layer 74 are in contact and under certain pressure, the first self-adhesive layer 73 and the second self-adhesive layer 74 exhibit strong adhesion and bond together to achieve a sealing effect.

[0114] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A sealing paper bag, characterized in that: Includes sheet paper (5), which is obtained by sequentially cutting sheet paper rolls along their length. The upper cut edge (61) of the sheet paper (5) is provided with a protruding sealing tongue (51), and the lower cut edge (62) of the sheet paper (5) is provided with a notch (52). Along the length direction of the sheet paper roll, the material at the notch (52) of the previous sheet paper (5) is the material for the sealing tongue (51) of the next sheet paper (5). The sheet paper (5) is enclosed to form a paper bag body (1). The upper cut edge (61) of the 5) surrounds and forms the upper opening of the paper bag body (1), and the sealing tongue (51) is used to seal the upper opening; the lower cut edge (62) of the sheet paper (5) surrounds and forms the lower opening of the paper bag body (1), and the lower opening of the paper bag body (1) is folded and closed to form the bottom (12) of the paper bag body (1). The notch (52) of the lower cut edge (62) of the sheet paper (5) is located inside the fold of the bottom (12), and the notch (52) is covered by the fold of the bottom (12).

2. The sealing paper bag according to claim 1, characterized in that: It also includes a sealing assembly (7), which is disposed on the side of the sealing tongue (51) near the upper opening; along the direction away from the sealing tongue (51), the sealing assembly (7) includes an adhesive (71) and a protective member (72) in sequence, the protective member (72) is used to separate from the adhesive member (71), and the adhesive member (71) is used to bond and seal the bag opening with the bag body (11) of the paper bag body (1); or the sealing assembly (7) includes a first self-adhesive layer (73) disposed on the sealing tongue (51) and a second self-adhesive layer (74) disposed on the paper bag body (1), the first self-adhesive layer (73) and the second self-adhesive layer (74) are bonded and fixed.

3. The sealing paper bag according to claim 2, characterized in that: The sealing tongue (51) is also provided with an easy-tear part (9), and there is a clearance distance between the easy-tear part (9) and the sealing assembly (7); the sealing tongue (51) separates from the bag body (11) of the paper bag body (1) along the easy-tear part (9).

4. The sealing paper bag according to claim 2, characterized in that: The sealing tongue (51) has a decorative surface (8) on the side away from the sealing component (7), and the decorative surface (8) is used to carry product and / or brand information.

5. The sealing paper bag according to claim 1, characterized in that: The shape of the sealing tongue (51) can be any one of rectangle, semi-ellipse, or semi-circle.

6. The sealing paper bag according to claim 1, characterized in that: The sheet paper (5) has a plurality of main side crease lines (63) arranged sequentially along its length direction. The main side crease lines (63) extend along the width direction of the sheet paper (5). By folding each of the main side crease lines (63) in sequence, the sheet paper (5) is divided into a connecting part (53), a first side pocket part (54), a front pocket part (55), a second side pocket part (56), and a rear pocket part (57). The connecting part (53) is bonded to the rear pocket part (57) to enclose the paper bag body (1). The sheet paper (5) has a first fold line (65) above the lower cut edge (62). The first fold line (65) extends along the length of the sheet paper (5). The lower cut edge (62) area of ​​the sheet paper (5) is folded along the first fold line (65) to form the bottom of the bag. The bottom of the bag is divided into the first side bag bottom (542), the front bag bottom (552), the second side bag bottom (562), and the rear bag bottom (572) respectively, corresponding to the paper bag body (1). Along the length of the sheet paper (5), the bottom of the front bag (552) and the bottom of the back bag (572) are respectively provided with second fold lines (66). The second fold line (66), the main side fold line (63) and the lower cut edge (62) form a triangular fold (59). The second fold line (66), the first fold and the lower cut edge (62) form a trapezoidal fold (58). The triangular fold (59) is provided on both sides of the trapezoidal fold (58). Based on the triangular fold (59), the bottom of the first side bag (542), the front bag (55), the bottom of the second side bag (562) and the bottom of the back bag (572) are folded and pasted together.

7. The sealing paper bag according to claim 6, characterized in that: The sealing tongue (51) is provided on the rear bag portion (57), and the sealing tongue (51) is used to adhere to the front bag portion (55); the notch (52) is provided on the bottom (572) of the rear bag.

8. The sealing paper bag according to claim 7, characterized in that: The notch (52) is provided on the triangular fold (59) at the bottom of the back bag (572), and the trapezoidal fold (58) at the bottom of the back bag (572) covers the notch (52).

9. The sealing paper bag according to claim 7, characterized in that: The notch (52) is provided on the trapezoidal fold (58) at the bottom of the rear bag (572), and the trapezoidal fold (58) at the bottom of the front bag (552) covers the notch (52).

10. The sealing paper bag according to claim 6, characterized in that: The sealing tongue (51) is provided on the side of the first bag and / or the side of the second bag, and the sealing tongue (51) is used to adhere and fix to the front bag part (55) or the rear bag part (57); the notch (52) is provided on the bottom of the first side bag (542) and / or the bottom of the second side bag (562), and the triangular fold (59) covers the notch (52).

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