CN219488190U - Packaging bag - Google Patents

Abstract

The utility model discloses a packaging bag, which comprises: a front film and a rear film; the side films can be folded along the central line, and two ends of the side films are respectively connected with the front film and the rear film; the first edge sealing part is arranged at the direct contact part of the lower part of the front film and the lower part of the side film; the two second edge sealing parts are respectively arranged between the front film and the side film and between the rear film and the side film, and one ends of the two second edge sealing parts are connected with one end of the first edge sealing part; when the side films are in a folded state, the two second edge sealing parts are in a parallel state, an included angle between the second edge sealing parts and the first edge sealing parts is an obtuse angle, the overlapping parts of the front film, the side films and the rear film are first areas, the first areas are divided into corner areas and main body areas by the second edge sealing parts and virtual extension lines thereof, and at least one fixed connection point is arranged between the front film and the rear film in the corner areas. The packaging bag with the structure can reduce the impact force formed at the stress concentration point when the packaging bag falls down, so as to avoid tearing and breaking the packaging bag.

Description

Packaging bag

Technical Field

The utility model relates to the technical field of material packaging, in particular to a packaging bag.

Background

At present, referring to fig. 2, there is an organ bag in the existing packaging bag, including relative front membrane 101 and back membrane 102 that set up, be equipped with the side membrane 103 that can inwards fold between front membrane and the back membrane, be provided with first banding portion 110 in bag mouth department between front membrane and the back membrane in order to seal direct contact's front membrane and back membrane, all be connected with between folding membrane and front membrane, folding membrane and the back membrane and extend banding portion 140 in order to seal, two extend banding portion parallel arrangement, and first banding portion and two extend banding portion intersect in one department in order to seal the bag. After the material is filled in the packaging bag, the packaging bag is opened, a stress concentration point is formed at the inner side of the bag at the intersection of the first edge sealing part and the two extending edge sealing parts, if the packaging bag falls down in the transportation process, the material in the packaging bag can form larger impact force on the stress concentration point, so that the stress concentration point is torn to cause the problem of breaking bags, and the sealing performance of the bag is further affected.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides the packaging bag which can reduce the impact force formed at the stress concentration point when the packaging bag falls down, so that the problems of tearing and breaking the packaging bag at the stress concentration point are avoided.

According to an embodiment of the present utility model, a packaging bag includes: a front film and a rear film disposed opposite to each other; the side films can be folded along the central line, and two ends of each side film are respectively connected with the front film and the rear film; the first edge sealing part is arranged at the direct contact part of the lower part of the front film and the lower part of the side film; the two second edge sealing parts are respectively arranged between the front film and the side film and between the rear film and the side film, and one ends of the two second edge sealing parts are connected with one end of the first edge sealing part; when the side films are in a folded state, the two second edge sealing parts are in a parallel state, an included angle between the second edge sealing parts and the first edge sealing parts is an obtuse angle, a first area is formed at the overlapping position of the front film, the side films and the rear film, the first area is divided into a corner area and a main area by the second edge sealing parts and virtual extension lines thereof, and the front film and the rear film which are positioned in the corner area are provided with at least one fixed connection point.

The packaging bag provided by the embodiment of the utility model has at least the following beneficial effects: when the packaging bag falls, impact force generated by materials acts on the front film, the side film and the rear film, and then the impact force is transmitted to the stress concentration point and the newly-added fixed connection point through the second edge sealing part, so that part of the impact force is shared by the fixed connection point, and the problem that the packaging bag is torn or even broken due to the fact that the stress concentration point bears larger impact force in the past is solved.

In some embodiments of the present utility model, the front film, the side film and the rear film are layered substrates, the substrates include an adhesive layer, a barrier layer and a temperature resistant layer sequentially connected from inside to outside of the bag, the side film located in the corner area is provided with two through holes, and when the side film is in a folded state, the two through holes overlap.

In some embodiments of the present utility model, the front film and the rear film located in the corner area are each provided with an extended edge sealing portion, one of the extended edge sealing portions is disposed at a direct contact position of the front film and the side film, the other extended edge sealing portion is disposed at a direct contact position of the rear film and the side film, and one ends of the two extended edge sealing portions are connected to one end of the first edge sealing portion.

In some embodiments of the utility model, the extended seal portion is positioned in line with the first seal portion when the side film is in the folded state.

In some embodiments of the utility model, the fixed connection point is located within the extended seal portion to fixedly connect two of the extended seal portions.

In some embodiments of the utility model, the fixed connection point is located in the corner region between the extended edge seal and the second edge seal.

In some embodiments of the present utility model, the second edge sealing portions are disposed at four corners of the front film and the rear film, the side film is provided with two sheets, and the through holes are disposed at four corners of each of the side films.

In some embodiments of the utility model, the included angle between the second edge seal portion and the first edge seal portion is 135 degrees.

In some embodiments of the utility model, the adhesive layer is a PE layer and the temperature resistant layer is a PET layer.

In some embodiments of the present utility model, the front film, the side film and the rear film are integrated, a third edge sealing portion is disposed between two ends of the integrated film, and one end of the third edge sealing portion is connected to the first edge sealing portion.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic view of a package according to an embodiment of the present utility model;

FIG. 2 is a partially schematic illustration of the bag of FIG. 1 being unfolded;

FIG. 3 is a schematic view of the interior section of the package of FIG. 1 when unfolded;

FIG. 4 is a schematic view of the package of FIG. 1 after filling;

fig. 5 is a schematic view of another view of fig. 4.

In the figure: the front film 101, the rear film 102, the side film 103, the first folded surface 1031, the second folded surface 1032, the first region 104, the corner region 1041, the main body region 1042, the first edge seal portion 110, the second edge seal portion 120, the through hole 130, the extended edge seal portion 140, and the third edge seal portion 150.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that references to orientation descriptions such as terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., are based on the orientation or positional relationship shown in the drawings, are merely for convenience of describing the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present utility model.

In the description of the present utility model, the description of the first and second is only for the purpose of distinguishing technical features, and should not be construed as indicating or implying relative importance or implying the number of technical features indicated or the precedence of the technical features indicated.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1 to 5, a package includes: a front film 101, a side film 103, a rear film 102, a first edge sealing portion 110 and a second edge sealing portion 120, wherein the front film 101 and the rear film 102 are oppositely arranged; the side film 103 is foldable along the center line, and two ends of the side film 103 are respectively connected with the front film 101 and the rear film 102; the first edge sealing part 110 is arranged at the direct contact position between the lower part of the front film 101 and the lower part of the side film 103; the two second edge sealing parts 120 are arranged, the two second edge sealing parts 120 are respectively arranged between the front film 101 and the side film 103 and between the rear film 102 and the side film 103, and one ends of the two second edge sealing parts 120 are connected with one end of the first edge sealing part 110; when the side film 103 is in the folded state, the two second edge sealing portions 120 are in parallel state, the included angle between the second edge sealing portions 120 and the first edge sealing portion 110 is an obtuse angle, the overlapping position of the front film 101, the side film 103 and the rear film 102 is the first area 104, the second edge sealing portions 120 and the virtual extension line thereof divide the first area 104 into a corner area 1041 and a main body area 1042, and at least one fixed connection point is provided between the front film 101 and the rear film 102 located in the corner area 1041.

The packaging bag with the structure above, when the packaging bag falls, the impact force generated by materials acts on the front film 101, the side film 103 and the rear film 102, and then the impact force is transmitted to the stress concentration point and the newly added fixed connection point through the second edge sealing part 120, so that part of the impact force is shared by the fixed connection point, and the problem that the packaging bag is torn or even broken due to the fact that the stress concentration point bears larger impact force in the past is solved.

Referring to fig. 1 and 2, in some embodiments of the present utility model, the front film 101, the side film 103 and the rear film 102 are all layered substrates, and the substrates include an adhesive layer, a barrier layer and a temperature resistant layer sequentially connected from inside to outside of the bag, and two through holes 130 are formed in the side film 103 located in the corner area 1041, and when the side film 103 is in a folded state, the two through holes 130 overlap.

Specifically, the adhesive layer can adhere together when heated, and the temperature resistant layer cannot adhere together when heated. In the processing process of the packaging bag, the bonding layers of the front film 101 and the rear film 102 which are in direct contact are heated and are mutually adhered to form the first edge sealing portion 110, the bonding layers of the front film 101 and the side film 103 which are in direct contact, and the bonding layers of the rear film 102 and the side film 103 which are in direct contact are heated and are mutually adhered to form the two second edge sealing portions 120, and the bag is fast and can be guaranteed to have good sealing performance in a heat sealing mode. It will be appreciated that this heat sealing may be accomplished by automated hot press equipment, which is advantageous in reducing manual operations. The side film 103 includes a first folded surface 1031 and a second folded surface 1032 connected to each other, the first folded surface 1031 is connected to the front film 101, the second folded surface 1032 is connected to the rear film 102, one through hole 130 penetrates the first folded surface 1031, and the other through hole 130 penetrates the second folded surface 1032. When the side film 103 is in a folded state, the first folded surface 1031 and the second folded surface 1032 overlap each other so that the two through holes 130 overlap, so that the adhesive layers of the front film 101 and the rear film 102 located in the corner region 1041 can contact and be thermally adhered together, thereby forming a fixed connection point between the front film 101 and the rear film 102 at the position of the through hole 130, and being beneficial to the bag to share part of the impact force by the fixed connection point as a stress concentration point.

Referring to fig. 1 to 5, in some embodiments of the present utility model, the front film 101 and the rear film 102 located in the corner region 1041 are each provided with an extended edge seal 140, one of the extended edge seals 140 is disposed at a direct contact between the front film 101 and the side film 103, the other extended edge seal 140 is disposed at a direct contact between the rear film 102 and the side film 103, and one end of the two extended edge seals 140 is connected to one end of the first edge seal 110. Specifically, the provision of the extended hem seal 140 increases the hem seal of the bag at the corner region 1041, thereby further ensuring the tightness of the bag.

Referring to fig. 1, in some embodiments of the present utility model, to simplify the layout and processing difficulty of the extended seal portion 140, the extended seal portion 140 is aligned with the first seal portion 110 when the side film 103 is in a folded state.

Referring to fig. 1 and 2, in some embodiments of the utility model, a fixed connection point is located within the extended seal portion 140 to fixedly connect the two extended seal portions 140. Specifically, when the packaging bag falls, the impact force generated by the material is transmitted to the fixed connection point and the stress concentration point through the second edge sealing portion 120, so that part of the impact force is shared by the fixed connection point, and the problem that the stress concentration point bears larger impact force in the past is reduced. In some embodiments, the number of the fixed connection points is multiple, and the multiple fixed connection points are distributed at intervals along the length direction of the extended edge sealing portion 140, so that the bag can share the impact force of the stress concentration points by increasing the number of the fixed connection points, and further, the occurrence of the phenomenon that the stress concentration points are torn to cause breaking is reduced.

In some embodiments of the present utility model, the fixed connection point is located in the corner area 1041 between the extended edge sealing portion 140 and the second edge sealing portion 120, so that the fixed connection point is located at an upper portion of the stress concentration point, which is beneficial for the impact force generated by the material to act on the fixed connection point first and then act on the stress concentration point, so that most of the impact force is borne by the fixed connection point, and further, the stress concentration point is reduced from bearing a larger impact force.

Referring to fig. 1, in some embodiments of the present utility model, the front and rear films 101 and 102 are provided at four corners with second sealing parts 120, the side films 103 are provided with two sheets, and the four corners of each of the side films 103 are provided with through holes 130. Specifically, the front film 101 and the rear film 102 are rectangular, and each of the side films 103 includes a first folded surface 1031 and a second folded surface 1032 connected to each other, the first folded surface 1031 being connected to the front film 101, and the second folded surface 1032 being connected to the rear film 102. When the side films 103 are folded, two corners of each first folding surface 1031 are overlapped with two corners of the front film 101, two corners of each second folding surface 1032 are overlapped with two corners of the rear film 102, wherein through holes 130 are formed in four corners of each piece of side film 103, so that the four corners of the front film 101 and the rear film 102 are respectively bonded together, the impact resistance of the four corners of the bag is improved, the direct impact force of materials in the bag body on the corners of the bag body is reduced, the sealing firmness of the bag is ensured, and the occurrence of edge burst phenomenon is reduced.

Referring to fig. 1, in some embodiments of the present utility model, in order to enable a large material storage space for bag opening and to facilitate processing of the second hem seal 120, the included angle between the second hem seal 120 and the first hem seal 110 is 135 degrees.

In some embodiments of the utility model, the adhesive layer is a PE layer and the temperature resistant layer is a PET layer. Specifically, the PE material can be bonded together by heating, and has good chemical stability so as to be in direct contact with materials. The PET material has good temperature resistance and weather resistance so as to be convenient for contacting with the outside. In some embodiments, the barrier layer may be a plastic or aluminum foil material, which is advantageous to ensure good barrier properties to the base material of the bag.

Referring to fig. 1, in some embodiments of the present utility model, the front film 101, the side film 103, and the rear film 102 are integrated films, and a third sealing portion 150 is disposed between both ends of the integrated films, and one end of the third sealing portion 150 is connected to the first sealing portion 110. Specifically, in the case of making a bag, two foldable folded portions are first formed on an integral film, then both ends of the integral film are heat-sealed together to form a third sealed edge portion 150, thereby forming a front film 101, a side film 103 and a rear film 102 of the bag, and finally a first sealed edge portion 110 and a second sealed edge portion 120 are formed on the bag, thereby completing one end sealing of the bag.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A package, comprising:

a front film (101) and a rear film (102) disposed opposite to each other;

a side film (103) foldable along a center line, both ends of the side film (103) being connected to the front film (101) and the rear film (102), respectively;

a first edge sealing portion (110) provided at a direct contact between the lower portion of the front film (101) and the lower portion of the side film (103);

two second edge sealing portions (120) respectively arranged between the front film (101) and the side film (103) and between the rear film (102) and the side film (103), wherein one ends of the two second edge sealing portions (120) are connected with one ends of the first edge sealing portions (110);

when the side films (103) are in a folded state, the two second edge sealing portions (120) are in a parallel state, an included angle between the second edge sealing portions (120) and the first edge sealing portions (110) is an obtuse angle, a first area (104) is formed at the mutually overlapped part of the front film (101), the side films (103) and the rear film (102), the second edge sealing portions (120) and virtual extension lines thereof divide the first area (104) into corner areas (1041) and main body areas (1042), and the front film (101) and the rear film (102) which are located in the corner areas (1041) are provided with at least one fixed connection point.

2. A package as claimed in claim 1, wherein:

the front membrane (101), the side membrane (103) and the back membrane (102) are all layered substrates, the substrates comprise an adhesive layer, a barrier layer and a temperature resistant layer which are sequentially connected from inside to outside of the bag, the side membrane (103) in the corner area (1041) is provided with two through holes (130), and when the side membrane (103) is in a folded state, the two through holes (130) are overlapped.

3. A package as claimed in claim 1, wherein:

the front film (101) and the rear film (102) which are positioned in the corner area (1041) are respectively provided with an extending edge sealing part (140), one of the extending edge sealing parts (140) is arranged at the direct contact part of the front film (101) and the side film (103), the other extending edge sealing part (140) is arranged at the direct contact part of the rear film (102) and the side film (103), and one ends of the two extending edge sealing parts (140) are connected with one end of the first edge sealing part (110).

4. A package as claimed in claim 3, wherein:

when the side film (103) is in a folded state, the extending edge sealing portion (140) and the first edge sealing portion (110) are positioned on the same straight line.

5. A package as defined in claim 4, wherein:

the fixed connection point is located in the extended edge sealing portion (140) to fixedly connect the two extended edge sealing portions (140).

6. A package as defined in claim 4, wherein:

the fixed connection point is located in the corner region between the extended edge seal portion (140) and the second edge seal portion (120).

7. A package as claimed in claim 2, wherein:

the four corners of the front film (101) and the rear film (102) are respectively provided with a second edge sealing part (120), the side films (103) are respectively provided with two sheets, and the four corners of each side film (103) are respectively provided with a through hole (130).

8. A package as claimed in claim 1, wherein:

the included angle between the second edge sealing portion (120) and the first edge sealing portion (110) is 135 degrees.

9. A package as claimed in claim 2, wherein:

the bonding layer is a PE layer, and the temperature resistant layer is a PET layer.

10. A package as claimed in claim 1, wherein:

the front membrane (101), the side membrane (103) and the rear membrane (102) are integrated, a third edge sealing part (150) is arranged between two ends of the integrated membrane, and one end of the third edge sealing part (150) is connected with the first edge sealing part (110).