CN204871881U - Novel valve port container bag - Google Patents

Abstract

The utility model discloses a novel valve port paper bag. By laying plastic film in the valve port paper strip, and the length of the plastic film extending into the paper bag is greater than the length of the valve port paper strip extending into the paper bag, after filling the material, The gas and material in the paper bag first press the paper strip at the valve port to seal, and then press the plastic film against the extrusion to realize the seal. In this way, a double-seal structure is formed, and the airtightness of the paper bag is greatly enhanced; moreover, the plastic film is made of a material with a certain viscosity. PE film, gas and materials press the plastic film against the extrusion, and the airtightness is further strengthened; the valve port structure is made of valve port paper strips and plastic film, and the valve is automatically closed from the inside of the valve port paper bag body after filling the material Mouth, good sealing, meet the requirements of use.

Description

A new valve paper bag

technical field

The utility model relates to a paper bag, in particular to a novel valve port paper bag.

Background technique

Existing paper bags with valve openings, especially paper bags with valve openings used for packaging powder or granular materials, are prone to material leakage from the valve opening barrel during transportation and storage, which greatly affects the quality of packaging and cannot meet the requirements for use.

Therefore, the prior art still needs to be improved and developed.

Utility model content

The purpose of this utility model is to provide a new type of valve mouth paper bag, which aims to solve the problem that the material of the existing valve mouth paper bag is easy to leak from the valve mouth cylinder during transportation and storage, which affects the packaging quality.

The technical scheme of the utility model is as follows:

A novel paper bag with a valve port, comprising a bag body and a first bottom and a second bottom respectively arranged at both ends of the bag body, a valve port structure for filling materials into the bag body is provided between the first bottom and the bag body, the The valve port structure extends from the first bottom into the bag, wherein the valve port structure includes a valve port paper strip and a plastic film folded together, and the length of the plastic film extending into the bag is longer than the valve port paper strip extends to The length of the bag body.

In the novel paper bag with a valve port, the length of the plastic film extending into the bag is 40 cm longer than the length of the paper strip at the valve port extending into the bag.

Said novel valve mouth paper bag, wherein said plastic film adopts PE film.

In the novel paper bag with a valve opening, the outer surfaces of the first bottom and the second bottom are provided with external reinforcing strips.

In the novel paper bag with a valve opening, an internal reinforcing strip is provided between the valve opening structure and the first bottom, and an internal reinforcing strip is provided on the inner surface of the second bottom.

The novel valve mouth paper bag includes a bag body and a first bottom and a second bottom respectively arranged at two ends of the bag body, the first bottom includes a first left corner and a first right corner folded along a corner line. The folded corners and the first upper cover and the first lower cover that are sequentially folded on the first left folded corner and the first right folded corner along the bottom cover line; the second bottom includes a second left folded along the folded corner line The folded corner part and the second right folded corner part and the second upper cover bottom part and the second lower cover part folded sequentially along the bottom cover line on the second left folded corner part and the second right folded corner part, the second upper cover bottom part and the second lower cover part Bonding the bottom of the second upper cover, bonding the bottom of the second upper cover with the second right folded corner, bonding the bottom of the second lower cover with the second right folded corner, bonding the bottom of the second upper cover with the second left folded corner, bonding the second The bottom of the lower seal is bonded to the second left-folded corner; a valve port structure is provided between the first left-folded corner and the first upper seal bottom, between the first left-folded corner and the first lower seal bottom, and the valve The port structure extends from the first bottom to the bag body, and includes a valve port paper strip and a plastic film folded together, the valve port paper strip includes a first front folded portion and a first valve port portion, and the plastic film includes a second front A folded part and a second valve port part, the second front folded part is folded in the first front folded part, the second valve port part is placed on the upper surface of the first valve port part, and both sides of the lower surface of the first valve port part respectively bonded to the bottom of the first upper seal and the bottom of the first lower seal; one side of the bottom of the first upper seal is bonded to one side of the bottom of the first lower seal; The other side of the bottom of the lower cover is bonded to the first right folded corner.

Beneficial effects of the utility model: the utility model provides a new type of paper bag at the valve port, by laying a plastic film in the paper strip at the valve port, and the length of the plastic film extending into the paper bag is greater than the length of the paper strip at the valve port extending into the paper bag , when the material is filled, the gas and material in the paper bag first press the paper strip at the valve port to seal, and then press the plastic film against the extrusion to realize the seal. In this way, a double-seal structure is formed, and the airtightness of the paper bag is greatly strengthened; and , the plastic film is made of PE film with a certain viscosity. After the gas and materials press the plastic film against the extrusion, the sealing performance is further strengthened; the valve port structure is made of valve port paper strips and plastic film. The valve mouth of the paper bag is closed inside the bag body, which has good sealing performance and meets the requirements of use.

Description of drawings

Fig. 1 is the structure schematic diagram when the valve port structure of the novel valve port paper bag is not provided in the utility model.

Fig. 2 is the structure schematic diagram when the valve port structure of the novel valve port paper bag in the utility model is set.

Fig. 3 is a schematic diagram of the external structure of the new valve mouth paper bag in the utility model.

Fig. 4 is the bottom view of the valve port paper strip and the plastic film in the utility model.

Detailed ways

In order to make the purpose, technical solution and advantages of the utility model more clear and definite, the utility model will be further described in detail below with reference to the accompanying drawings and examples.

As shown in Figures 1-4, the valve mouth paper bag of the present invention includes a bag body 100 and a first bottom 110 and a second bottom 120 respectively arranged at both ends of the bag body 100, between the first bottom 110 and the bag body 100 there are The valve port structure of the filling material in the bag body 100, the valve port structure extends from the first bottom 110 into the bag body 100, including the valve port paper strip 210 and the plastic film 220 folded together, the plastic film 220 The length h1 extending into the bag 100 is greater than the length h2 of the valve strip 210 extending into the bag 100 .

Preferably, the length h1 of the plastic film 220 extending into the bag 100 is 40 cm longer than the length h2 of the valve strip 210 extending into the bag 100 (ie h1-h2=40 cm).

In order to strengthen the sealing performance of the valve port structure, the plastic film 220 adopts PE film.

In order to strengthen the strength of the first bottom 110 and the second bottom 120 , outer surfaces of the first bottom 110 and the second bottom 120 are provided with external reinforcing strips.

In order to further strengthen the strength of the first bottom 110 and the second bottom 120 , an internal reinforcement strip is provided between the valve port structure and the first bottom 110 , and an internal reinforcement strip is provided on the inner surface of the second bottom 120 .

As shown in Figure 2, in this embodiment, the specific structure of the novel valve mouth paper bag is as follows: it includes a bag body 100 and a first bottom 110 and a second bottom 120 respectively arranged at both ends of the bag body 100, the first bottom 110 includes a first left corner part 111 and a first right corner part 112 folded along the corner line 130 and a first upper back cover folded sequentially along the bottom cover line 140 and placed on the first left corner part 111 and the first right corner part 112 part 113 and the first bottom cover part 114; the second bottom part 120 includes a second left corner part and a second right corner part folded along the corner line, and is folded sequentially along the bottom cover line to place the second left corner part and the second corner part. The second upper seal bottom and the second lower seal bottom on the right folded corner, the second upper seal bottom and the second lower seal bottom are bonded, the second upper seal bottom is bonded to the second right folded corner, the second lower seal bottom and the second right-folded corner, the second upper cover part and the second left-folded corner, and the second lower cover part and the second left-folded corner; between the first left-folded corner 111 and the second A valve port structure is provided between the upper sealing bottom 113, the first left folded corner 111 and the first lower sealing part 114, and the valve port structure extends from the first bottom 110 into the bag body 100, including folded A valve port paper strip 210 and a plastic film 220, the valve port paper strip 210 includes a first front folded portion 211 and a first valve port portion 214, the plastic film 220 includes a second front folded portion and a second valve port portion, the The second front folding part is folded in the first front folding part 211, and the second valve port part is placed on the upper surface of the first valve port part 214. 113. The first lower sealing bottom 114 is bonded, one side of the first upper sealing bottom 113 is bonded to one side of the first lower sealing bottom 114, the other side of the first upper sealing bottom 113 is bonded to the first right corner 112, and the first lower sealing The other side of the cover portion 114 is glued to the first right corner portion 112 .

The manufacturing process of the novel valve mouth paper bag is as follows: fold out the left corner and the right corner at both ends of the bag body 100 along the corner line, and fold out the first front folded part 211 and the first folded part 210 according to the size requirements of the valve paper strip 210. The valve port portion 214, the plastic film 220 is folded out of the second front folded portion and the second valve port portion, the second front folded portion is placed in the first front folded portion 211, the second valve port portion and the first valve port portion 214 is aligned according to the size requirements, and glue is applied to both sides of the lower surface of the first valve port portion 214, and the valve port paper strip 210 is pasted on the first left corner 111, and the plastic film 220 is also attached to the valve port paper strip 210. Paste on the first bottom 110, fold the inner reinforcing strip out of the front folded part, apply glue on both sides of the lower surface of the inner reinforcing strip, and paste the inner reinforcing strip on the valve port paper strip 210 and the first right On the corner part 112, apply glue on the corresponding positions of the first right corner part 112, the first upper seal part 113 and the first lower seal part 114 respectively, and fold the first upper seal part 113 and the first Bottom seal bottom 114 forms the first bottom 110, smears glue on the outside of the first bottom 110, and the outer reinforcing bar is glued on the first bottom 110, and the first bottom 110 is completed; In the second left corner, the second Apply glue to the corresponding positions of the right folded corner, the second upper seal bottom and the second lower seal bottom, and place the inner reinforcing strip on the second left folded corner, the second right folded corner, the second upper seal bottom and the second On the bottom of the second lower seal, fold the second upper seal bottom and the second lower seal bottom sequentially according to the bottom seal line 140 to form the second bottom 120, apply glue on the outside of the second bottom 120, and stick the outer reinforcing bar on the second bottom On the bottom 120, the second bottom 120 is completed; so far, the manufacture of the new valve mouth paper bag is completed.

The valve paper bag of the new valve is laid with a plastic film in the valve paper strip, and the length of the plastic film extending into the paper bag is greater than the length of the valve paper strip extending into the paper bag. After filling the material, the gas and material in the paper bag First, press the paper strip at the valve port to seal, and then press the plastic film against the squeeze to realize the seal. In this way, a double-seal structure is formed, and the airtightness of the paper bag is greatly enhanced; moreover, the plastic film is made of PE film with a certain viscosity, and the gas and After the material presses the plastic film against the extrusion, the sealing performance is further strengthened; the valve port structure made of valve port paper strips and plastic film is adopted, and the valve port is automatically closed from the inside of the valve port paper bag body after filling the material, and the sealing performance is good. Meet the requirements for use.

It should be understood that the application of the present utility model is not limited to the above examples, and those skilled in the art can improve or change according to the above description, and all these improvements and changes should belong to the protection of the appended claims of the present utility model scope.

Claims (6)

1. a novel valve mouth paper bag, comprise bag and be separately positioned on bag two ends first bottom and second bottom, the valve mouth structure of fill material in bag is provided with bottom first and between bag, described valve mouth structure extends in bag bottom first, it is characterized in that, described valve mouth structure comprises the valve port paper slip and plastic film that fold mutually, and the described plastic film length extended in bag is greater than valve port paper slip and extends to length in bag.

2. novel valve mouth paper bag according to claim 1, is characterized in that, described plastic film extends to the long 40cm of length that length in bag extends in bag than valve port paper slip.

3. novel valve mouth paper bag according to claim 2, is characterized in that, described plastic film adopts PE film.

4. novel valve mouth paper bag according to claim 3, is characterized in that, the outside face bottom described first and bottom second is provided with outer finishing strips.

5. novel valve mouth paper bag according to claim 4, is characterized in that, is provided with interior finishing strips between bottom described valve mouth structure and first, and the inside face bottom second is provided with interior finishing strips.

6. novel valve mouth paper bag according to claim 5, it is characterized in that, comprise bag and be separately positioned on bag two ends first bottom and second bottom, comprise the first left folding bight and the first right folding bight that are converted into along knuckle line bottom described first and be folded and placed to back cover portion and first time back cover portion on first on the first left folding bight and the first right folding bight successively along back cover line, comprise the second left folding bight and the second right folding bight that are converted into along knuckle line bottom described second and be folded and placed to back cover portion and second time back cover portion on second on the second left folding bight and the second right folding bight successively along back cover line, on second back cover portion and second time back cover portion bonding, on second back cover portion and the second right folding bight bonding, second time back cover portion and and the second right folding bight bonding, on second back cover portion and the second left folding bight bonding, second time back cover portion and and the second left folding bight bonding, back cover portion on described first left folding bight and first, valve mouth structure is provided with between first left folding bight and first time back cover portion, described valve mouth structure extends in bag bottom first, comprise the valve port paper slip and plastic film that fold mutually, described valve port paper slip comprises the first front folding part and the first valve port portion, plastic film comprises the second front folding part and the second valve port portion, described second front folding part is folded in the first front folding part, second valve port portion is placed on the first valve port portion upper surface, the lower surface both sides in the first valve port portion respectively with first on back cover portion, first time back cover portion is bonding, on first back cover portion one side and first time back cover portion simultaneously bonding, on first back cover portion another side and the first right folding bight bonding, first time back cover portion another side and and the first right folding bight bonding.