CN218967647U

CN218967647U - Waterproof bag

Info

Publication number: CN218967647U
Application number: CN202222702048.XU
Authority: CN
Inventors: 左杨; 邝仕能; 辛青青
Original assignee: Fujian Nanwang Environmental Protection Technology Co ltd
Current assignee: Fujian Nanwang Environmental Protection Technology Co ltd
Priority date: 2022-10-13
Filing date: 2022-10-13
Publication date: 2023-05-05
Anticipated expiration: 2032-10-13

Abstract

The application relates to the technical field of packaging bags, in particular to a waterproof bag. The bag comprises a bag body, a heat-sealing area, a bag bottom and a bonding edge, wherein bag making paper is folded through a first fold mark and bonded with the bonding edge to form the bag body, the bag body is folded through a second fold mark to form the bag bottom, the heat-sealing area is arranged on one side of the surface of the bag making paper, the heat-sealing area is bonded through a bonding body, and the heat-sealing area is positioned on the bag bottom. The bag structure is optimized, bag making paper is concaved inwards or outwards turned to the side face of the bag through the interval mark, and finally two waterproof bags with the bottoms not identical are formed. The bottom of the bottom bag is provided with a heat sealing area, so that the waterproof sealing effect of the bag is enhanced. The further bag making paper can be high-wet-strength waterproof paper, laminated paper or coating paper with waterproof function, so that the paper bag has waterproof effect. The adhesive body can be made of hot melt adhesive, coating with heat sealing function and waterproof adhesive for adhesion and sealing. The local outer surface of the bag bottom can further strengthen the structural strength of the bag bottom through the adhesive body.

Description

Waterproof bag

Technical Field

The application relates to the technical field of packaging bags, in particular to a waterproof bag.

Background

The packaging bag is often used in daily life, and along with the continuous updating of the use requirement, the packaging bag is often required to be environment-friendly and degradable firstly, and secondly, the packaging bag is required to be firm in structure and has certain functional effects, such as a waterproof function.

The waterproof bag in the prior art is usually a plastic bag, and the plastic bag circulated in the market is usually not degradable. The paper bag is used for replacing the plastic bag, so that the degradation problem can be well solved, and the paper bag can be recycled. But adopts the paper bag as the waterproof bag, which puts forward a certain requirement on the waterproof performance of the paper bag, and it is particularly important how to improve the waterproof performance of the paper bag and ensure the structural strength of the waterproof bag.

Disclosure of Invention

Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application. The objectives and other advantages of the application may be realized and attained by the structure particularly pointed out in the written description and drawings hereof.

At present, kitchen waste belongs to wet waste, in the prior art, a plastic waste bag is generally used as the kitchen waste bag, and some sharp waste is not discharged from the kitchen waste, so that the plastic waste bag is easy to damage, and the waste bag cannot be used. And the plastic garbage bags are inconvenient because the bags are broken when kitchen garbage is discarded. In supermarkets, a part of supermarkets have certain waterproof requirements on fresh, and plastic bags are used at present, so that the environment friendliness is poor.

The aim of the application is to overcome the defects and provide a waterproof bag.

In order to achieve the above purpose, the technical solution of the present application is:

the utility model provides a waterproof bag, includes system bag paper, the bag body, heat-seal zone, bag end, pastes the limit, and system bag paper is folded and is pasted the limit and form the bag body through first crease, and the bag body is folded through the second crease and is formed the bag end, and surface one side of system bag paper sets up the heat-seal zone, and bonds sealed heat-seal zone through the bonding body, and the heat-seal zone is located at the bottom of the bag. The bag making paper can be coated paper, laminated paper or wet strength paper, and the waterproof effect of the waterproof bag is enhanced by materials on the premise of structural sealing. The wet strength paper is high wet strength waterproof paper, the coating paper is coating paper with waterproof function, the surface of the coating paper is provided with at least one layer of waterproof and heat-sealing material through a coating process, and the waterproof and heat-sealing material is an acrylic acid monomer system and polyolefin system material, so that the use requirement can be met. The heat sealing area is used for sealing the corresponding position of the bag body by adopting the hot pressing step through bag making equipment, and the matched adhesive body is hot melt adhesive or paint with a heat sealing function.

In some embodiments, the pouch body comprises a pouch face, a pouch side, the pouch side divided into two parts by a separation mark, and the pouch paper is recessed or everted into the pouch side by the separation mark.

In some embodiments, the partial outer surfaces of the pouch base are bonded to each other by an adhesive.

In some embodiments, the adhesive is a water-resistant adhesive.

In some embodiments, a third crease is provided on the pouch, and the pouch bottom is turned up along the third crease and conforms to the pouch exterior surface.

In some embodiments, the side end of the heat sealing area is provided with a fourth crease, and one side of the outer surface of the heat sealing area is adhered to the outer surface of the bag bottom along the fourth crease through an adhesive body.

In some embodiments, the bag body outer surface is provided with first reinforcing areas, the first reinforcing areas being bonded to each other by an adhesive. The situation that the bag bottom is downwards convex when the waterproof bag contains heavier objects after only the heat-sealing area is sealed is avoided. The bag bottom part structure is reinforced by arranging the adhesive body in the first reinforcing area on the original basis, so that the stability and the firmness of the bottom end of the waterproof bag can be further improved.

In some embodiments, the outer surface of the pouch base is provided with second reinforcing regions that are bonded to one another by an adhesive. The bag bottom part structure is reinforced by arranging the adhesive body in the second reinforcing area on the original basis, so that the stability and the firmness of the bottom end of the waterproof bag can be further improved.

In some embodiments, the outer surface or the inner surface of the bag body is adhered with a lifting handle through an adhesive body, and the lifting handle is a square handle or a round handle. The most basic waterproof bag is not provided with any structure for lifting, and when the waterproof bag is used, the waterproof bag is carried by lifting the top end of the waterproof bag. On the basis, any structure for lifting can be arranged at the top end of the waterproof bag, and in practical application, a lifting handle is arranged or a lifting opening is directly arranged at the top end of the bag body.

In some embodiments, a pull opening is provided through the top end of the pouch.

In some embodiments, the adhesive is a hot melt adhesive or a coating having a heat seal function. The main component of the functional coating is metal salt of acrylic acid ethylene-methacrylic acid copolymer, and the heat sealing area can be heat sealed by hot melt adhesive or formed by hot pressing the functional coating under the heat sealing condition. In practical application, the heat sealing condition is specifically that the temperature is 110-160 ℃, the pressure is 300-700KPa, and the time is more than 1S. The thickness of the hot melt adhesive or the functional coating is flexibly selected according to the requirement.

Through adopting foretell technical scheme, the beneficial effect of this application is:

1. the bag structure is optimized, bag making paper is concaved inwards or outwards turned to the side face of the bag through the interval mark, and finally two waterproof bags with the bottoms not identical are formed. The bottom of the bottom bag is provided with a heat sealing area, so that the waterproof sealing effect of the bag is enhanced. The material of the bag making paper can be further optimized, and the bag making paper can be high-wet-strength waterproof paper, coated paper or coating paper with a waterproof function, so that the paper bag has a waterproof effect. The adhesive body can be bonded and sealed by hot melt adhesive, paint with heat sealing function or waterproof adhesive. The local outer surface of the bag bottom can further strengthen the structural strength of the bag bottom through the adhesive body.

2. The waterproof bag is degradable, recyclable and strong in environmental protection, and can be combined with paper with different smoothness to select heat-sealing materials and processes in different modes, so that the preparation of the heat-sealable paper bag is realized.

Drawings

The accompanying drawings are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate the application and not to limit it.

In the drawings, like parts are designated with like reference numerals and are illustrated schematically and are not necessarily drawn to scale.

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are only one or several embodiments of the present application, and other drawings can be obtained according to such drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural view of a waterproof bag according to the present application;

fig. 2 is a schematic structural view of a lifting handle attached in a waterproof bag according to the present application;

fig. 3 is a schematic structural view of a first waterproof bag according to the present application;

fig. 4 is a first side view of a first waterproof bag of the present application;

FIG. 5 is a schematic view of the folded heat seal area of the first waterproof bag of the present application;

figure 6 is a second side view of the first waterproof bag of the present application;

fig. 7 is a schematic view of the structure of the bottom of the first waterproof bag of the present application after being folded along the third crease;

figure 8 is a schematic view of the first waterproof bag of the present application in an expanded configuration;

fig. 9 is a schematic structural view of a second waterproof bag of the present application;

fig. 10 is a schematic perspective view of a second waterproof bag according to the present application;

fig. 11 is a schematic view of the location of a second reinforcing area of a second waterproof bag of the present application;

fig. 12 is a schematic structural view of the bottom of the second waterproof bag of the present application after being folded along the third fold;

fig. 13 is a schematic view of an expanded configuration of a second waterproof bag of the present application;

fig. 14 is a top view of a first waterproof bag bottom structure of the present application;

fig. 15 is a top view of a second waterproof bag bottom structure of the present application;

fig. 16 is a schematic structural view of a waterproof bag external-attaching lifting handle.

The main reference numerals illustrate: 1. a bag body; 2. a heat sealing area; 3. a bag bottom; 4. sticking edges; 5. the front surface of the bag; 6. a bag side;

10. a first crease; 20. a second crease; 30. a third crease; 40. a fourth crease; 50. spacing marks;

100. a first reinforcing region; 200. a second reinforcing zone; 300. and lifting the handle.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is further described in detail below in connection with the detailed description. It should be understood that the detailed description is presented merely to explain the application and is not intended to limit the application.

In addition, in the description of the present application, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," etc. indicate or refer to an azimuth or a positional relationship based on that shown in the drawings, and are merely for convenience of description and to simplify the description, and do not indicate or imply that the apparatus or element in question must have a specific azimuth, be configured and operated in a specific azimuth, and therefore should not be construed as limiting the present application.

In this application, unless specifically stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. However, it is noted that direct connection indicates that the two bodies connected together do not form a connection relationship through a transition structure, but are connected together to form a whole through a connection structure. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

In this application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Referring to fig. 1 to 16, fig. 1 is a schematic structural view of a waterproof bag according to the present application; fig. 2 is a schematic structural view of a lifting handle attached in a waterproof bag according to the present application; fig. 3 is a schematic structural view of a first waterproof bag according to the present application; fig. 4 is a first side view of a first waterproof bag of the present application; FIG. 5 is a schematic view of the folded heat seal area of the first waterproof bag of the present application; figure 6 is a second side view of the first waterproof bag of the present application; fig. 7 is a schematic view of the structure of the bottom of the first waterproof bag of the present application after being folded along the third crease;

figure 8 is a schematic view of the first waterproof bag of the present application in an expanded configuration; fig. 9 is a schematic structural view of a second waterproof bag of the present application;

fig. 10 is a schematic perspective view of a second waterproof bag according to the present application; fig. 11 is a schematic view of the location of a second reinforcing area of a second waterproof bag of the present application; fig. 12 is a schematic structural view of the bottom of the second waterproof bag of the present application after being folded along the third fold; fig. 13 is a schematic view of an expanded configuration of a second waterproof bag of the present application; fig. 14 is a top view of a first waterproof bag bottom structure of the present application; fig. 15 is a top view of a second waterproof bag bottom structure of the present application; fig. 16 is a schematic structural view of a waterproof bag external-attaching lifting handle.

The application discloses waterproof bag, including system bag paper, the bag body 1, heat-seal area 2, bag end 3, paste limit 4, system bag paper is folding through first crease 10 and paste limit 4 and form the bag body 1, and the bag body 1 is folding through second crease 20 and is formed bag end 3, and second crease 20 is the crease that forms the bag end structure, because the bag is whole to be four square, consequently second crease 20 can understand the generic term that is used for forming many creases at the bottom of the bag 3. A heat sealing area 2 is arranged on one side of the surface of the bag making paper, the heat sealing area 2 is bonded and sealed through an adhesive body, and the heat sealing area 2 is positioned on the bag bottom 3. The bag making paper can be wet strength paper, coating paper or laminating paper, and the waterproof effect of the waterproof bag is enhanced by materials on the premise of structural sealing. The waterproof paper is high-wet-strength waterproof paper, the coating paper is coating paper with a waterproof function, at least one layer of waterproof and heat-sealing material is arranged on the surface of the coating paper through a coating process, and the waterproof and heat-sealing material is an acrylic acid monomer system and polyolefin system material, so that the use requirements can be met. The main principle of forming the coated paper is that micromolecular materials are polymerized under the condition of coating and drying of a coating machine, and the coating paper has certain performances of water resistance, oil resistance, heat sealing and the like, but is extremely easy to break up in the process of recovering paper, does not have the paper-plastic separation link which is the most difficult to recover coated paper, belongs to easily-recovered materials, and is beneficial to environmental protection. The heat sealing area is used for sealing the corresponding position of the bag body by adopting the hot pressing step through bag making equipment, and the matched adhesive body is hot melt adhesive or paint with a heat sealing function.

According to some embodiments of the present application, optionally, the bag body 1 includes a front bag surface 5 and a side bag surface 6, the side bag surface 6 is divided into two parts by a partition mark 50, the bag making paper is concaved or turned outwards by the partition mark 50, and after the bag making paper is adhered along the adhering edge 4, the concaved or turned outwards side bag surface 6 is selected, and the waterproof bag finished product is different, which is shown in the embodiment 1 and the embodiment two.

According to some embodiments of the application, optionally, local outer surfaces of the bag bottom 3 are mutually adhered through adhesive bodies, and structural strength and stability are enhanced by flexibly arranging the adhesive bodies at corresponding positions.

According to some embodiments of the present application, optionally, the bag body 1 is provided with a third fold 30, and the bag bottom 3 is turned up along the third fold and is attached to the outer surface of the bag body 1. In practical applications, the bag bottom 3 can be used only by unfolding along the third fold 30.

According to some embodiments of the present application, optionally, a fourth crease 40 is disposed at a side end of the heat sealing area 2, and one side of an outer surface of the heat sealing area 2 is adhered to an outer surface of the bag bottom 3 along the fourth crease 40 through an adhesive body.

According to some embodiments of the present application, the outer surface of the bag body 1 is optionally provided with a first reinforcing area 100, and the first reinforcing areas 100 are adhered to each other by an adhesive body. After the bag bottom 3 is prevented from sealing the heat sealing area 2, the bag bottom 3 can be downwards convex when the waterproof bag contains heavy articles. The structure of the bag bottom 3 is reinforced by arranging the adhesive body in the first reinforcing area 100 on the original basis, so that the stability and the firmness of the waterproof bag bottom 3 can be further improved.

According to some embodiments of the present application, the outer surface of the bag bottom 3 is optionally provided with second reinforcing areas 200, the second reinforcing areas 200 being bonded to each other by means of an adhesive body. The structure of the bag bottom 3 is reinforced by arranging the adhesive body in the second reinforcing area 200 on the original basis, so that the stability and the firmness of the waterproof bag bottom 3 can be further improved.

According to some embodiments of the present application, optionally, the outer surface or the inner surface of the bag body 1 is adhered with the lifting handle 300 by an adhesive body, and the lifting handle 300 is a square handle or a round handle. The most basic waterproof bag is not provided with any structure for lifting, and when the waterproof bag is used, the waterproof bag is carried by lifting the top end of the waterproof bag. On this basis, any structure for lifting can be arranged at the top end of the waterproof bag, and in practical application, a lifting handle 300 is usually arranged or a lifting opening is directly arranged at the top end of the bag body 1.

According to some embodiments of the present application, optionally, a lifting opening is provided through the top end of the bag body 1.

According to some embodiments of the present application, the adhesive is optionally a hot melt adhesive or a functional coating. The main component of the functional coating is metal salt of acrylic acid ethylene-methacrylic acid copolymer, the coating is dry and comfortable at normal temperature, has no adhesive effect, has adhesive effect under certain heat sealing conditions, and can be formed by heat sealing with hot melt adhesive or hot pressing with the functional coating under heat sealing conditions. In practical application, the heat sealing condition is specifically that the temperature is 110-160 ℃, the pressure is 300-700KPa, and the time is more than 1S. The thickness of the hot melt adhesive or the functional coating is flexibly selected according to the requirement.

When the hot melt adhesive is used for bonding the bag, a common means is to add a knife coating link in the bag making link, and the knife coating link is to knife coating the hot melt adhesive once by a heat seal knife gun.

According to some embodiments of the present application, optionally, the adhesive is a waterproof adhesive.

Example 1

Referring to fig. 3-8 and 14, fig. 3 is a schematic structural view of a first waterproof bag according to the present application; fig. 4 is a first side view of a first waterproof bag of the present application; FIG. 5 is a schematic view of the folded heat seal area of the first waterproof bag of the present application; figure 6 is a second side view of the first waterproof bag of the present application; fig. 7 is a schematic view of the structure of the bottom 3 of the first waterproof bag of the present application after being folded along the third crease; figure 8 is a schematic view of the first waterproof bag of the present application in an expanded configuration; fig. 14 is a top view of the first waterproof bag bottom structure of the present application.

The embodiment discloses waterproof bag, including system bag paper, bag body 1, heat seal district 2, bag end 3, paste limit 4, system bag paper is folded and is pasted to paste limit 4 and form bag body 1 through first crease 10, and bag body 1 is folded through second crease 20 and is formed bag end 3, and system bag paper's surface one side sets up heat seal district 2, and bonds sealed heat seal district 2 through the bonding body, and heat seal district 2 is located bag end 3. The bag making paper can be waterproof paper or coated paper, and the waterproof effect of the waterproof bag is enhanced by the material on the premise of structural sealing. The waterproof paper is high-wet-strength waterproof paper, the coating paper is coating paper with a waterproof function, at least one layer of waterproof and heat-sealing material is arranged on the surface of the coating paper through a coating process, and the waterproof and heat-sealing material is an acrylic acid monomer system and polyolefin system material, so that the use requirements can be met. The main principle of forming the coated paper is that micromolecular materials are polymerized under the condition of coating and drying of a coating machine, and the coating paper has certain performances of water resistance, oil resistance, heat sealing and the like, but is extremely easy to break up in the process of recovering paper, does not have the paper-plastic separation link which is the most difficult to recover coated paper, belongs to easily-recovered materials, and is beneficial to environmental protection.

The bag body 1 comprises a bag front face 5 and a bag side face 6, the bag side face 6 is divided into two parts by a spacing mark 50, and bag making paper is concave to the bag side face 6 by the spacing mark 50. The local outer surfaces of the bag bottoms 3 are mutually adhered through the adhesive body, and the structural strength and stability are enhanced by flexibly arranging the adhesive body at the corresponding position.

According to some embodiments of the present application, optionally, the outer surface or the inner surface of the bag body 1 is adhered with the lifting handle 300 by an adhesive body, and the lifting handle 300 is a square handle or a round handle. The most basic waterproof bag is not provided with any structure for lifting, and when the waterproof bag is used, the waterproof bag is carried by lifting the top end of the waterproof bag. On this basis, any structure for lifting can be arranged at the top end of the waterproof bag, and in practical application, a lifting handle 300 is usually arranged or a lifting opening is directly arranged at the top end of the bag body 1. The lifting structure can be a paper flat handle and a lifting piece formed by adding a reinforcing paper sheet, namely a square handle. The lifting structure can also be a rope handle formed by twisting paper and a lifting piece formed by adding a reinforcing paper sheet, namely a round handle.

According to some embodiments of the present application, the adhesive is optionally a hot melt adhesive or a coating having a heat sealing function. The main component of the functional coating is metal salt of acrylic acid ethylene-methacrylic acid copolymer, the coating is dry and comfortable at normal temperature, has no adhesive effect, has adhesive effect under certain heat sealing conditions, and can be formed by heat sealing with hot melt adhesive or hot pressing with the functional coating under heat sealing conditions. In practical application, the heat sealing condition is specifically that the temperature is 110-160 ℃, the pressure is 300-700KPa, and the time is more than 1S. The thickness of the hot melt adhesive or the functional coating is flexibly selected according to the requirement.

Example two

Referring to fig. 9-13 and 15, fig. 9 is a schematic structural view of a second waterproof bag according to the present application; fig. 10 is a schematic perspective view of a second waterproof bag according to the present application; fig. 11 is a schematic view of the location of a second reinforcing area of a second waterproof bag of the present application; fig. 12 is a schematic structural view of the bottom of the second waterproof bag of the present application after being folded along the third fold; fig. 13 is a schematic view of an expanded configuration of a second waterproof bag of the present application; fig. 15 is a top view of a second waterproof bag bottom structure of the present application.

According to some embodiments of the application, optionally, the bag body 1 comprises a bag front 5 and a bag side 6, the bag side 6 is divided into two parts by a spacing mark 50, bag making paper is turned outwards by the spacing mark 50 to form the bag side 6, local outer surfaces of the bag bottom 3 are mutually bonded by an adhesive body, and the structural strength and stability are enhanced by flexibly setting the adhesive body at corresponding positions.

According to some embodiments of the present application, the adhesive is optionally a water-proof adhesive, a hot melt adhesive, or a coating having a heat sealing function. The main component of the functional coating is metal salt of acrylic acid ethylene-methacrylic acid copolymer, the coating is dry and comfortable at normal temperature, has no adhesive effect, has adhesive effect under certain heat sealing conditions, and can be formed by heat sealing with hot melt adhesive or hot pressing with the functional coating under heat sealing conditions. In practical application, the heat sealing condition is specifically that the temperature is 110-160 ℃, the pressure is 300-700KPa, and the time is more than 1S. The thickness of the hot melt adhesive or the functional coating is flexibly selected according to the requirement.

Basic waterproof bag referring to fig. 1, fig. 2 shows an extension based on a basic waterproof bag, that is, a schematic view of a waterproof bag structure provided with a lifting handle 300. Fig. 3 to 8 are various schematic views and developed views of the first waterproof bag type after the bag-making paper passes through the concave bag side 6 of the partition mark 50. Fig. 9 to 13 are various schematic and developed views of the second waterproof bag type after the bag-making paper is turned over the bag side 66 outward by the partition mark 50.

First, the structure of the prepared waterproof bag bottom 3 is shown in fig. 6 and 7, and it can be seen from fig. 7 that the bag bottom 3 has been turned up along the third fold 30 and attached to the bag body 1, and the bag bottom 3 has a heat-seal area 2, and the heat-seal area 2 is the area where the bag bottom 3 is sealed by the adhesive body. It can be seen that the areas of the first reinforcing section 100 may not be bonded by the bond, which may be sufficient for the containment of lighter objects. However, in practical applications, in order to improve the strength of the structure of the bottom 3, the area of the first reinforcing area 100 is further bonded with the adhesive to improve the stability of the bottom 3.

The second waterproof bag type is that the structure of the prepared waterproof bag bottom 3 is shown in fig. 9-12, and it can be seen from fig. 12 that the bag bottom 3 has been turned up along the third fold 30 and attached to the bag body 1, and that the bag making paper passes through the interval mark 50 to turn up the coated area of the heat-sealed area 2 after the bag side 6. As can be seen, there are more ears on both sides than the first waterproof pouch type, and the final paper pouch, after the second reinforcing section 200 is bonded by the adhesive, has a section of heat-seal section 2 folded together. Whereas the heat-sealed areas 2 of the first waterproof bag type are all visible through the location of the bag bottom 3. Of course, in addition to the second reinforcing section 200, an adhesive bonding may be provided, and the back surface of the folded heat seal section 2 may be provided with an adhesive bonding.

It is to be understood that the embodiments disclosed herein are not limited to the particular structures disclosed herein, but are intended to extend to equivalents of such features as would be understood by one of ordinary skill in the relevant arts. It is also to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting.

Reference in the specification to "an embodiment" means that a particular feature, or characteristic, described in connection with the embodiment is included in at least one embodiment of the application. Thus, appearances of the phrase or "an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment.

Furthermore, the described features or characteristics may be combined in any other suitable manner in one or more embodiments. In the above description, certain specific details are provided, such as thicknesses, numbers, etc., to provide a thorough understanding of embodiments of the present application. One skilled in the relevant art will recognize, however, that the application may be practiced without one or more of the specific details, or with other structures, components, etc.

Claims

1. The waterproof bag is characterized by comprising bag making paper, a bag body, a heat sealing area, a bag bottom and a bonding edge, wherein the bag making paper is folded through a first fold mark and is bonded with the bonding edge to form the bag body, the bag body is folded through a second fold mark to form the bag bottom, the heat sealing area is arranged on one side of the surface of the bag making paper, the heat sealing area is bonded and sealed through a heat sealing bonding body, the heat sealing area is positioned on the bag bottom, and the bonding body is hot melt adhesive or paint with a heat sealing function.

2. The waterproof bag of claim 1, wherein the bag body comprises a bag front face and a bag side face, the bag side face is divided into two parts by a spacing mark, and the bag making paper is recessed into the bag side face by the spacing mark.

3. The waterproof bag of claim 1, wherein the bag body comprises a bag front face and a bag side face, the bag side face is divided into two parts by a partition mark, and the bag making paper turns the bag side face outwards by the partition mark.

4. The waterproof bag of claim 2 wherein the bag body outer surface is provided with first reinforcing areas, the first reinforcing areas being bonded to each other by an adhesive.

5. A waterproof bag according to claim 3 wherein the outer surface of the bottom of the bag is provided with second reinforcing areas which are bonded to each other by means of an adhesive.

6. The waterproof bag according to claim 4, wherein the side end of the heat-seal area is provided with a fourth crease, and the side of the outer surface of the heat-seal area is adhered to the outer surface of the bottom of the bag along the fourth crease by an adhesive body.

7. The waterproof bag of any one of claims 1-6, wherein a third fold is provided in the bag body, and the bottom of the bag is turned up along the third fold and conforms to the outer surface of the bag body.

8. The waterproof bag according to any one of claims 4 to 6, wherein the adhesive is any one of a hot melt adhesive, a paint having a heat sealing function, and a waterproof adhesive.

9. The waterproof bag according to any one of claims 1 to 6, wherein a lifting handle is provided on the bag body, and the lifting handle is a square handle or a round handle.

10. The waterproof bag of claim 1, wherein the bag-making paper is any one of coated paper, and wet strength paper.