CN210794162U - Paper bag for packaging - Google Patents

Abstract

The utility model relates to a paper bag for packaging, which comprises a bag body side plate, a top plate and a bottom plate, wherein the top plate comprises a first connecting plate, a first top side plate, a second top side plate, a third top side plate and a fourth top side plate which are connected in turn through creasing lines, the bottom plate comprises a second connecting plate, a first bottom side plate, a second bottom side plate, a third bottom side plate and a fourth bottom side plate, two creasing lines are arranged on the outer surface of the third bottom side plate, the two creasing lines are arranged at two ends of the third bottom side plate, one ends of the two creasing lines are both positioned at the edge of the third bottom side plate, the other ends of the two creasing lines are both positioned at the edge of the first bottom side plate, two creasing lines are arranged at two ends of the first bottom side plate, one ends of the two creasing lines are both positioned at the edge of the first bottom side plate, the inner surface of the first bottom side plate is provided with adhesive tapes, the problem that books or clothing present the effect poor and the packaging process is troublesome has been solved to this application.

Description

Paper bag for packaging

Technical Field

The utility model relates to a wrapping bag field especially relates to a container bag for packing.

Background

At present, more people choose to buy articles on the internet along with the improvement of the quality of life of people, wherein books and clothes such as shirts need to improve the presenting effect of articles for customers, most books are wrapped by plastic films and then packaged by plastic bags for mailing when being packaged, for example, shirts need to be tidy when being received by customers, but the shirts are easy to scatter when being packaged by boxes covered on the heaven and the earth, the plastic bags are not environment-friendly, and secondly, auxiliary bag sealing tools such as adhesive tape scissors need to be used when being packaged by the plastic bags, so that a great amount of time is wasted when being packaged by sellers, and therefore, the problem needs to be solved.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a container bag for packing is provided, solved books or clothing and presented the problem that the effect is poor and the packaging process is troublesome.

The utility model provides an above-mentioned technical problem's technical scheme as follows: a paper bag for packaging comprises a bag body side plate, a top plate and a bottom plate, wherein the top plate comprises a first connecting plate, a first top side plate, a second top side plate, a third top side plate and a fourth top side plate which are sequentially connected through crease lines, the inner surface of the fourth top side plate is bonded with the outer surface of the first connecting plate, one end of the bag body side plate is respectively connected with the first connecting plate, one side of the first top side plate, one side of the second top side plate, one side of the third top side plate and one side of the fourth top side plate are connected through the crease lines, two crease lines are arranged on the outer surface of the third top side plate, the two crease lines are arranged at the two ends of the third top side plate, one ends of the two crease lines are respectively located at the edge of the diagonal line, the other end of the diagonal line is located at the edge of the third top side plate, the two crease lines are arranged on the outer surface of the first top side plate, one ends of the two crease lines are, an adhesive tape is arranged on the inner surface of the first top side plate;

the bottom plate comprises a second connecting plate, a first bottom side plate, a second bottom side plate, a third bottom side plate and a fourth bottom side plate, the inner surface of the fourth bottom side plate is bonded with the outer surface of the second connecting plate, the other end of the bag body side plate is respectively connected with the second connecting plate, one side of the first bottom side plate, one side of the second bottom side plate, one side of the third bottom side plate and one side of the fourth bottom side plate are connected through crease lines, two indentation lines are arranged on the outer surface of the third bottom side plate, the two indentation lines are arranged at two ends of the third bottom side plate, one end of each indentation line is positioned at the diagonal, the other end of each indentation line is positioned at the edge of the third bottom side plate, the outer surface of the first bottom side plate is provided with two indentation lines, the two indentation lines are arranged at two ends of the first bottom side plate, one end of each indentation line is located at the diagonal line, the other end of each indentation line is located at the edge of the first bottom side plate, and the inner surface of the first bottom side plate is provided with an adhesive tape.

Further, the bag body side plate comprises a third connecting plate, a first side plate, a second side plate, a third side plate and a fourth side plate which are sequentially connected through crease lines, the inner surface of the fourth side plate is bonded with the outer surface of the third connecting plate, two ends of the third connecting plate are respectively connected with one ends of the first connecting plate and the second connecting plate through the crease lines, two ends of the first side plate are respectively connected with one ends of the first top side plate and the first bottom side plate through the crease lines, two ends of the second side plate are respectively connected with one ends of the second top side plate and the second bottom side plate through the crease lines, two ends of the third side plate are respectively connected with one ends of the third top side plate and the third bottom side plate through the crease lines, and two ends of the fourth side plate are respectively connected with one ends of the fourth top side plate and the fourth bottom side plate through the crease lines.

Furthermore, the positions of the two ends of the outer surface of the third connecting plate, the first side plate, the second side plate, the third side plate and the fourth side plate, which are close to the top plate and the bottom plate, are provided with crease lines and the two ends of the crease lines are vertically intersected with the crease lines arranged at the positions close to the top plate and the bottom plate respectively, the outer surfaces of the second side plate and the fourth side plate are provided with crease lines, one end of each crease line is positioned at the intersection position of the two crease lines, and the other end of each crease line is positioned at the two ends of the second top side plate, the second bottom side plate, the fourth bottom side plate and the fourth top side plate.

Furthermore, adhesive tapes are arranged at the contact positions of the third top side plate and the second top side plate and the fourth top side plate, and the adhesive tapes are arranged at the contact positions of the first top side plate and the outer surface of the third top side plate, the outer surface of the second top side plate and the outer surface of the fourth top side plate;

adhesive tapes are arranged at the contact positions of the third bottom side plate and the second bottom side plate and the fourth bottom side plate, and the adhesive tapes are arranged at the contact positions of the first bottom side plate and the outer surface of the third bottom side plate, the outer surface of the second bottom side plate and the outer surface of the fourth bottom side plate.

Further, the surface of the paper bag is coated with a waterproof coating.

Further, the adhesive tape is double faced adhesive tape, double faced adhesive tape surface is provided with from type paper, from type paper one end and double faced adhesive tape one end parallel and level, the other end surpasss bag body opening part edge and is wavy.

Further, the paper bag is made of natural-color kraft paper.

The beneficial effects brought by the technical scheme at least comprise: make the inner space rational utilization of packing container bag, and the corner that can protect books prevents the turn-up, especially the shirt when packing clothing, in order to prevent the shirt fold, can stack the shirt neatly when the packing, the mild hand and the environmental protection that do not have the fish tail of paper texture are recoverable, the container bag both ends are open state, people can follow arbitrary opening and put into article, put into the back like this when article, can be with both hands in the suitable position of both ends opening part adjustment inside article, the packing material article presents the state best, then carry out the envelope operation, the container bag simple structure of this application, high durability and convenient use, practical range is wide, the relative position of article in the bag can be guaranteed to the container bag of suitable size, guarantee the effect that presents of article.

Drawings

FIG. 1 is a schematic view of the overall structure of a paper bag for packaging of the present invention;

fig. 2 is the utility model discloses a container bag overall structure expandes the sketch map for packing.

In the drawings, the components represented by the respective reference numerals are listed below:

1. bag body side plate, 2, top plate, 3, bottom plate, 4, first connecting plate, 5, first top side plate, 6, second top side plate, 7, third top side plate, 8, fourth top side plate, 9, indentation line, 10, adhesive tape, 11, second connecting plate, 12, first bottom side plate, 13, second bottom side plate, 14, third bottom side plate, 15, fourth bottom side plate, 16, third connecting plate, 17, first side plate, 18, second side plate, 19, third side plate, 20, fourth side plate, 21, indentation line, 22, release paper.

Detailed Description

The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "center", "inner", "outer", "top", "bottom", 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 simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 to 2, the present invention provides a paper bag for packaging, comprising a bag body side plate 1, a top plate 2 and a bottom plate 3, wherein the top plate 2 comprises a first connecting plate 4, a first top side plate 5, a second top side plate 6, a third top side plate 7 and a fourth top side plate 8 which are sequentially connected by a creasing line 9, the inner surface of the fourth top side plate 8 is bonded with the outer surface of the first connecting plate 4, one end of the bag body side plate 1 is respectively connected with the first connecting plate 4, one side of the first top side plate 5, the second top side plate 6, the third top side plate 7 and one side of the fourth top side plate 8 are connected by a creasing line 9, two creasing lines 9 are arranged on the outer surface of the third top side plate 7, the two creasing lines 9 are arranged at two ends of the third top side plate 7, one end of the two creasing lines 9 is located at the edge of the third top side plate 7, the other end of the diagonal line is located at the edge of the third top side, the two indentation lines 9 are arranged at two ends of the first top side plate 5, one ends of the two indentation lines 9 are positioned at the diagonal line, the other ends of the two indentation lines are positioned at the edge of the first top side plate 5, and the inner surface of the first top side plate 5 is provided with an adhesive tape 10;

the bottom plate 3 comprises a second connecting plate 11, a first bottom side plate 12, a second bottom side plate 13, a third bottom side plate 14 and a fourth bottom side plate 15, the inner surface of the fourth bottom side plate 15 is bonded with the outer surface of the second connecting plate 11, the other end of the bag body side plate 1 is respectively connected with the second connecting plate 11, one side of the first bottom side plate 12, one side of the second bottom side plate 13, one side of the third bottom side plate 14 and one side of the fourth bottom side plate 15 are connected through a creasing line 9, two creasing lines 9 are arranged on the outer surface of the third bottom side plate 14, the two creasing lines 9 are arranged at two ends of the third bottom side plate 14, one ends of the two creasing lines 9 are both located at the edge of the third bottom side plate 14, the two creasing lines 9 are arranged on the outer surface of the first bottom side plate 12, one ends of the two creasing lines 9 are both located at the edge of the first bottom side plate 12, the inner surface of the first bottom side plate 12 is provided with an adhesive tape 10, the packaging bag is suitable for packaging books and clothes, the packaging bag is a rectangular packaging bag, the books are rectangular, so the inner space of the packaging paper bag can be reasonably utilized, the corners of the books can be protected to prevent edge curling, when the clothes are packaged, especially, shirts are folded to prevent shirt wrinkles, the shirts can be stacked neatly and packaged, the packaging boxes adopted in the market are mostly plastic packaging shells or top and bottom cover type packaging boxes, firstly, the packaging bag is not environment-friendly, the plastic packaging outer boxes are hard and can easily scratch hands, the top and bottom cover type packaging boxes are easily scattered in the process of taking and placing, and the packaging paper bag is inconvenient to use, the packaging paper bag can completely overcome the problems, the packaging paper bag can be made of wood pulp paper, recycled paper and composite paper, and the derived white cardboard, the coated paper, the white kraft paper, the natural color kraft paper, the gray bottom white board paper and the black cardboard, preferably the natural color kraft paper, the paper bag can be recycled for papermaking after the life cycle is finished, no influence is generated in the papermaking process of the conventional papermaking machine, the forest protection and the resource waste are effectively reduced, the texture of the paper is mild, and hands which do not scratch the hands are not scratched, in the using process of the packaging paper bag, the bottom end of the packaging paper bag can be sealed, namely, the second bottom side board 13 and the fourth bottom side board 15 can be firstly turned over along the crease lines 9 respectively arranged on the first bottom side board 12 and the third bottom side board 14 towards the inner part of the bag body before the packaging paper bag is used, the third bottom side board 14 is turned over towards the inner part of the bag body along the crease lines 9 between the third bottom side board 14 and the side board 1 of the bag body, the inner surface of the third bottom side board 14 is contacted with the outer surfaces of the turned over second bottom side, it should be explained that the bag body is enclosed by the side panels 1 of the bag body, the first bottom side panel 12 is further folded along the crease line 9 between the side panels 1 of the bag body towards the inside of the bag body, so that the inner surface of the first bottom side panel 12 is bonded with the outer surface of the folded third bottom side panel 14 through the adhesive tape 10, the bottom surface of the paper bag is formed, articles are put into the paper bag from the top end opening, the second top side panel 6 and the fourth top side panel 8 are further folded along the crease line 9 arranged on the third top side panel 7 and the first top side panel 5 towards the inside of the bag body, the third top side panel 7 is further folded along the crease line 9 between the side panels 1 of the bag body towards the inside of the bag body, so that the inner surface of the third top side panel 7 is in contact with the outer surfaces of the folded second top side panel 6 and the fourth top side panel, and the first top side panel 5 is further folded towards the inside of the bag body along the, make 5 internal surfaces of first top curb plate and the surface of turning over third top curb plate 7 after rolling over to pass through adhesive tape 10 and bond, accomplish the envelope, can also be need not be with bag body bottom shaping earlier before the use, the container bag both ends are open state like this, people can follow arbitrary opening and put into article, put into the back like this when article, can use both hands in the suitable position of the inside article of both ends opening part adjustment, the packing material presents the state best, then envelope operation, the container bag simple structure of this application, high durability and convenient use, wide practical range, the relative position of article in the bag can be guaranteed to the container bag of suitable size, guarantee the effect that presents of article.

The paper bag for packaging of the utility model, as shown in fig. 1 to 2, can also be on the basis of the technical scheme described in the foregoing: the side panel 1 of the bag body comprises a third connecting plate 16, a first side plate 17, a second side plate 18, a third side plate 19 and a fourth side plate 20 which are sequentially connected through a crease line 9, the inner surface of the fourth side plate 20 is bonded with the outer surface of the third connecting plate 16, two ends of the third connecting plate 16 are respectively connected with one ends of the first connecting plate 4 and the second connecting plate 11 through the crease line 9, two ends of the first side plate 17 are respectively connected with one ends of the first top side plate 5 and the first bottom side plate 12 through the crease line 9, two ends of the second side plate 18 are respectively connected with one ends of the second top side plate 6 and the second bottom side plate 13 through the crease line 9, two ends of the third side plate 19 are respectively connected with one ends of the third top side plate 7 and the third bottom side plate 14 through the crease line 9, two ends of the fourth side plate 20 are respectively connected with one ends of the fourth top side plate 8 and the fourth bottom side plate 15 through the crease line, the utility model provides a packaging paper bag is rectangle packaging paper bag, and the top surface is parallel with the bottom surface, effectual increase inner space's use like this.

The paper bag for packaging of the utility model, as shown in fig. 2, can also be on the basis of the technical scheme described in the foregoing: the outer surfaces of the third connecting plate 16, the first side plate 17, the second side plate 18, the third side plate 19 and the fourth side plate 20 are provided with crease lines 21 at the positions, close to the top plate 2 and the bottom plate 3, of the two ends and are parallel to the opening, the outer surfaces of the second side plate 18 and the fourth side plate 20 are provided with crease lines 21, the two ends of the crease lines 21 are respectively and vertically intersected with the crease lines 9 arranged at the positions, close to the top plate 2 and the bottom plate 3, of the two ends, the outer surfaces of the second side plate 18 and the fourth side plate 20 are provided with crease lines 21, one end of each crease line 21 is positioned at the intersection position of the two crease lines 21, the other end of each crease line is positioned at the two ends of the second top side plate 6, the second bottom side plate 13, the fourth bottom side plate 15 and the fourth top side plate 8, so that the two ends of the paper bag have folding functions, the storage when the paper bag is not, therefore, only the second side plate 18 and the fourth side plate 20 need to be folded towards the inside of the bag body along the crease lines 21 arranged on the surfaces of the second side plate 18 and the fourth side plate 20, so that the distance between the inner surface of the first side plate 17 and the inner surface of the third side plate 19 is shortened, the storage space is saved, and people can fold and store the paper bag after selecting any one side for forming.

The paper bag for packaging of the utility model, as shown in fig. 2, can also be on the basis of the technical scheme described in the foregoing: adhesive tapes 10 are arranged at the contact positions of the third top side plate 7, the second top side plate 6 and the fourth top side plate 8, and the adhesive tapes 10 are arranged at the contact positions of the first top side plate 5, the outer surface of the third top side plate 7, the outer surface of the second top side plate 6 and the outer surface of the fourth top side plate 8;

the joint of the third bottom side plate 14 and the second bottom side plate 13 and the fourth bottom side plate 15 is provided with an adhesive tape 10, and the joint of the first bottom side plate 12 and the outer surface of the third bottom side plate 14, the outer surface of the second bottom side plate 13 and the outer surface of the fourth bottom side plate 15 is provided with the adhesive tape 10, so that the paper bag is better in sealing performance, and the safety of articles is improved.

The utility model discloses a container bag for packing can also be on the basis of the technical scheme of preceding description: the surface of the paper bag is coated with the waterproof coating, the paper bag has the environmental protection function and the waterproof effect by combining the structure, the structure is simple, the use is convenient, the waterproof coating is made of mixed liquid of paraffin and acrylic ester, the paper packaging material becomes a green packaging material which meets the development requirements of times by using the excellent performances of multiple aspects, recoverability, easy treatment, no pollution and the like of the paper packaging material, however, the defects of poor gas barrier property, poor moisture barrier property and poor waterproof property of the paper packaging material exist by using the paper and the paper board as the packaging material, particularly, the method for waterproof processing by coating the paper surface with polyethylene emulsion and polyvinylidene chloride emulsion is reported in sequence by some documents, and the method can overcome some defects of the paper packaging material and really achieve obvious effect, however, there are also other disadvantages, such as that the treatment of paper products with a polyvinylidene chloride emulsion can decompose hydrogen chloride gas under the influence of heat and ultraviolet rays, and the residual monomer is toxic, so that the paper products can be used as food packages under certain influence and limitation, while the present application adopts paraffin as a main raw material, prepares a paraffin emulsion with good stability by optimizing an emulsification formula, and then compounds a certain proportion of acrylate waterproof emulsion to obtain excellent waterproof performance after treating the paper products, and the pure use of paraffin emulsion to carry out waterproof treatment on the paper products can improve the waterproof performance, but the effect is not ideal, so we select the acrylate emulsion waterproof agent to compound, obtain better waterproof effect, so that the paper can obtain excellent waterproof effect, and the surface of the paper is bright, thus a continuous waterproof protective film can be formed on the surface of the paper, the acrylic emulsion waterproof agent has very good film forming property, all films are transparent and bright, the elasticity is good, the original physical and mechanical properties of paper cannot be adversely affected, and the paraffin wax: the melting point 52/54/56/58 and other brands and the glyceryl stearate/oleic acid are all industrial products, the acrylic waterproof agent emulsion is prepared by coating the prepared emulsion waterproof agent on the surface of paper by adopting a coating process, and the prepared emulsion waterproof agent is uniformly sprayed on the surface of the paper after being atomized by a siphon type pressure spray gun through infrared heat drying or pressure roller heating drying or adopting a spraying process, wherein the waterproof coating can be an outer surface coating or an inner surface and an outer surface which are both coated with waterproof coatings, and in order to prevent the adhesive tape 10 from being firmly adhered, no waterproof coating is arranged at all viscose positions.

The paper bag for packaging of the utility model, as shown in fig. 1 to 2, can also be on the basis of the technical scheme described in the foregoing: adhesive tape 10 is the double faced adhesive tape, the double faced adhesive tape surface is provided with from type paper 22, from type paper 22 one end and double faced adhesive tape one end parallel and level, the other end surpasss bag body opening part edge just presents the wavy, and the outward appearance is pleasing to the eye and conveniently uses from tearing of type paper 22 makes things convenient for adhesive tape 10.

The utility model discloses a container bag for packing can also be on the basis of the technical scheme of preceding description: the paper bag is made of natural-color kraft paper, the natural-color kraft paper with the quantitative rate of 80-300 g/square meter is used, the flexible, firm, folding and bursting resistant index is high, the paper form includes but is not limited to single-sided light, double-sided light, embossing, non-embossing, high-quality kraft paper/craft paper, the bursting resistant index is larger than 3.5, the paper is not torn after being folded for more than 30 times, the tensile index is larger than 40, the tearing index is larger than 8, and the self characteristic of the kraft paper is utilized to provide protection for contents after the bag is made.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims (7)

1. A paper bag for packaging characterized in that: comprises a bag body side plate (1), a top plate (2) and a bottom plate (3), wherein the top plate (2) comprises a first connecting plate (4), a first top side plate (5), a second top side plate (6), a third top side plate (7) and a fourth top side plate (8) which are sequentially connected through crease lines (9), the inner surface of the fourth top side plate (8) is bonded with the outer surface of the first connecting plate (4), one end of the bag body side plate (1) is respectively connected with the first connecting plate (4), one side of the first top side plate (5), one side of the second top side plate (6), one side of the third top side plate (7) and one side of the fourth top side plate (8) are connected through the crease lines (9), two crease lines (9) are arranged on the outer surface of the third top side plate (7), the two crease lines (9) are arranged at two ends of the third top side plate (7), one ends of the two crease lines (9) are positioned at the edge of the diagonal line, and the other, two indentation lines (9) are arranged on the outer surface of the first top side plate (5), the two indentation lines (9) are arranged at two ends of the first top side plate (5), one ends of the two indentation lines (9) are positioned at the diagonal line, the other ends of the two indentation lines are positioned at the edge of the first top side plate (5), and an adhesive tape (10) is arranged on the inner surface of the first top side plate (5);

the bottom plate (3) comprises a second connecting plate (11), a first bottom side plate (12), a second bottom side plate (13), a third bottom side plate (14) and a fourth bottom side plate (15), the inner surface of the fourth bottom side plate (15) is bonded with the outer surface of the second connecting plate (11), the other end of the bag body side plate (1) is respectively connected with the second connecting plate (11), one side of the first bottom side plate (12), the second bottom side plate (13), the third bottom side plate (14) and the fourth bottom side plate (15) is connected with a crease line (9), two crease lines (9) are arranged on the outer surface of the third bottom side plate (14), the two crease lines (9) are arranged at two ends of the third bottom side plate (14), one ends of the two crease lines (9) are both located at the edge of the third bottom side plate (14), the other ends of the two crease lines are located at the edge of the third bottom side plate (14), the outer surface of the first bottom side plate (12), two indentation lines (9) are arranged at two ends of a first bottom side plate (12), one end of each indentation line (9) is located at the edge of the other end of the diagonal line located at the first bottom side plate (12), and an adhesive tape (10) is arranged on the inner surface of the first bottom side plate (12).

2. The paper bag for packaging according to claim 1, characterized in that: the bag body side plate (1) comprises a third connecting plate (16), a first side plate (17), a second side plate (18), a third side plate (19) and a fourth side plate (20) which are sequentially connected through a crease line (9), the inner surface of the fourth side plate (20) is bonded with the outer surface of the third connecting plate (16), the two ends of the third connecting plate (16) are respectively connected with one ends of the first connecting plate (4) and the second connecting plate (11) through the crease line (9), the two ends of the first side plate (17) are respectively connected with one ends of the first top side plate (5) and the first bottom side plate (12) through the crease line (9), the two ends of the second side plate (18) are respectively connected with one ends of the second top side plate (6) and the second bottom side plate (13) through the crease line (9), the two ends of the third side plate (19) are respectively connected with one ends of the third top side plate (7) and the third bottom side plate (14) through the crease line (9), and two ends of the fourth side plate (20) are respectively connected with one end of the fourth top side plate (8) and one end of the fourth bottom side plate (15) through crease lines (9).

3. The paper bag for packaging according to claim 2, characterized in that: the utility model discloses a roof, bottom plate, top side plate, bottom side plate, and bottom side plate.

4. The paper bag for packaging according to claim 3, characterized in that: adhesive tapes (10) are arranged at the contact positions of the third top side plate (7) and the second top side plate (6) and the fourth top side plate (8), and the adhesive tapes (10) are arranged at the contact positions of the first top side plate (5) and the outer surfaces of the third top side plate (7), the second top side plate (6) and the fourth top side plate (8);

adhesive tapes (10) are arranged at the contact positions of the third bottom side plate (14) and the second bottom side plate (13) and the fourth bottom side plate (15), and the adhesive tapes (10) are arranged at the contact positions of the first bottom side plate (12) and the outer surface of the third bottom side plate (14), the outer surface of the second bottom side plate (13) and the outer surface of the fourth bottom side plate (15).

5. The paper bag for packaging according to claim 4, characterized in that: the surface of the paper bag is coated with a waterproof coating.

6. The paper bag for packaging according to claim 5, characterized in that: the adhesive tape (10) is a double-sided adhesive tape, a release paper (22) is arranged on the outer surface of the double-sided adhesive tape, one end of the release paper (22) is flush with one end of the double-sided adhesive tape, and the other end of the release paper exceeds the edge of the opening of the bag body and is wavy.

7. The paper bag for packaging according to claim 6, characterized in that: the paper bag is made of natural-color kraft paper.

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