CN112572981A

CN112572981A - Novel valve port bag

Info

Publication number: CN112572981A
Application number: CN202011527206.1A
Authority: CN
Inventors: 陈安康; 邵军; 俞育文
Original assignee: Shanghai Ailu Package Co ltd
Current assignee: Shanghai Ailu Package Co ltd
Priority date: 2020-12-22
Filing date: 2020-12-22
Publication date: 2021-03-30

Abstract

The invention relates to the technical field of packaging bags, and discloses a novel valve bag, which solves the technical problem of material leakage of the existing built-in valve bag due to easy deformation of a valve port, and comprises a cylinder body and a built-in valve port, wherein the middle part of the cylinder body is a bag body; the bottom of the cylinder body forms a lower bottom through a bottom pasting process; the top of the cylinder body forms an upper bottom and a valve port through a bottom pasting process; the lower bottom is bonded and sealed through glue and a first patch, one end of the upper bottom is sealed through glue and a second patch, the other end of the upper bottom is provided with a built-in valve port, the built-in valve port is communicated with the inside of the bag body, and the built-in valve port comprises an upper valve port structure, a lower valve port structure, a valve port overlapping area and a material closing film arranged on the corresponding valve port structure. According to the technical scheme, the valve port deformation problem caused by single-layer material characteristics and process limitations is solved by adopting the valve port structure overlapped up and down.

Description

Novel valve port bag

Technical Field

The invention relates to the technical field of packaging bags, in particular to a novel valve bag.

Background

The technical working conditions are as follows: the valve port packaging bag is one of the main forms of the weight packaging of powder in the chemical industry and building material industry at present, compared with an open bag, the valve port packaging bag is only communicated with the outside at the valve port, so that the valve port packaging bag not only has higher packaging aesthetic property, higher bag body strength and packaging tightness, but also can meet the requirements of the packaging of various powder materials, particularly powder materials which are high in gas content and easy to damp, such as superfine powder, through the combination of different moisture-proof performance materials of the bag body and an exhaust process. Meanwhile, valve port filling equipment matched with the automatic valve port filling equipment is gradually formed into automatic production modes such as automatic filling, automatic shaping and automatic stacking. The high-efficiency packaging requirement required by high yield of powder building materials and powder chemical raw materials is greatly met.

The existing valve port packaging bag can be divided into an external valve port and an internal valve port according to the position of the valve port, wherein a valve port structure is positioned in a folded angle at the bottom of a bag body and is called as the internal valve port, and part of the valve port structure exceeds the folded angle of the bag body and is called as the external valve port. Conventional valve port generally constitutes for paper or compound soft materials, filling in-process especially powder material, can be unable to avoid having partial residual material to be as for in the valve port, in wrapping bag storage or transportation, because the valve port warp leads to oral area residual material to leak, especially built-in type valve port, because valve port length is shorter and the material is softer, very easily lead to the unable normal close of valve port because of the valve port warp, the residual material in the valve port appears and even the leakage and the weing of material in the packing, and the material that the valve port warp leads to leaks and causes the packing pollution, greatly influence whole bag humidity resistance of wrapping bag and packing aesthetic property, more direct relation packs in the material normal physical and chemical properties's maintenance and storage shelf life.

Introduction of the prior art: aiming at the problem that the material in the package is affected with damp because the material is leaked and the valve port is deformed in the processes of storing and transporting the residual material in the valve port in the powder packaging process of the valve port packaging bag.

The external valve port is generally made of composite materials with a heat sealing function, and the valve port is completely closed through heat sealing at the opening part, so that material leakage of the valve port is avoided;

the built-in valve port is generally designed by adopting a valve port material with higher gram weight or lengthening the length of the valve port on the inner side of the bag body and adopting a material closing film structure at the valve port, so that the problem of material leakage caused by deformation of the valve port is avoided as much as possible.

The technical problem is as follows: although the valve port is external, the valve port can be made of composite materials with a heat sealing function, the problem of material leakage of the valve port is thoroughly solved through a port heat sealing mode, the residual materials at the port easily cause poor sealing, particularly the residual materials of cement, mortar and the like aiming at building materials and the like and the residual materials of high-specific-gravity inorganic mineral materials easily cause poor sealing, the leakage materials of the incompletely sealed valve port are still cut, a heat sealing working section is added, the filling time is prolonged, and the influence on the production efficiency is great.

Therefore, the built-in valve port is generally adopted for high-yield chemical materials, particularly powder in the building material industry, the sealing time can be saved through the built-in design of the valve port, the production efficiency is improved, and meanwhile, the whole packaging bag is more complete and closed and has better attractiveness due to the built-in valve port. Although the problem of material leakage in the package can be avoided as much as possible through the design of the material closing film of the built-in valve port, the problem of valve port deformation cannot be solved well, and the problem of material leakage in the valve port even in the package due to valve port deformation is easily caused.

Disclosure of Invention

Aiming at the technical problem that the built-in valve port provided by the background technology leaks materials due to the fact that the valve port is easy to deform, the invention adopts the valve port structure with the overlapped upper layer and the overlapped lower layer, and solves the problems that the valve port structure is not enough in stiffness due to single-layer material characteristics and process limitations, and the packaging pollution, the materials are damped and the like caused by the fact that the materials at the opening part of a packaging finished product are leaked due to the deformation of the valve port.

In order to achieve the purpose, the invention provides the following technical scheme:

a novel valve port bag comprises a cylinder body and a built-in valve port;

the middle part of the cylinder body is a bag body;

the bottom of the cylinder body forms a lower bottom through a bottom pasting process;

the top of the cylinder body forms an upper bottom through a bottom pasting process;

the bag body is provided with a bag body, the bag body is provided with a lower bottom, the lower bottom is bonded and sealed with a first patch through glue, one end of the upper bottom is sealed through the glue and a second patch, the other end of the upper bottom is provided with the built-in valve port, the built-in valve port is communicated with the interior of the bag body, and the built-in valve port comprises an upper valve port structure, a lower valve port structure and a valve port overlapping area.

Through above-mentioned technical scheme, through adopting the valve port structure of upper and lower floor overlapping, the improvement leads to valve port structure stiffness not enough because of individual layer material characteristic and technology restriction, and the packing finished product that appears leads to the oral area material to leak because of the valve port deformation and causes the packing to pollute, the material scheduling problem that wets.

The invention is further configured to: an upper material closing film is arranged in the upper layer valve port structure, a lower material closing film is arranged in the lower layer valve port structure, a film overlapping area is formed in the valve port overlapping area, and the upper material closing film, the lower material closing film and the film overlapping area play a material closing role together.

Through above-mentioned technical scheme, upper valve port structure, lower floor's valve port structure and close the material membrane and play the bottom sprag jointly and close the material effect.

The invention is further configured to: the upper valve port structure is of a single-layer structure or a multi-layer structure.

The invention is further configured to: the lower valve port structure is a single-layer structure or a multi-layer structure.

The invention is further configured to: the upper layer valve port structure and the lower layer valve port structure are formed by sheet lap joint forming, sheet staggered forming or double-layer cylinder valve forming.

The invention is further configured to: the upper and lower blanking films are arranged in one or more layers.

The invention is further configured to: the upper layer valve port structure, the lower layer valve port structure and the multilayer structure of the upper material closing film and the lower material closing film are arranged to be glue bonding forming structures or are arranged to be composite multilayer structures.

The invention is further configured to: the upper layer valve port structure and the lower layer valve port structure are arranged in a flush or uneven length mode close to the inner portion of the bag body, and are arranged in a flush mode close to the outer portion of the built-in valve port.

In conclusion, the invention has the following beneficial effects:

(1) through adopting the valve port structure that adopts the multilayer to overlap, the improvement leads to valve port structure stiffness not enough because of individual layer material characteristic and technology restriction, and the packing finished product that appears leads to the oral area material to leak because of the valve port warp and causes packing pollution, material to wet scheduling problem.

Drawings

FIG. 1 is a schematic view of a single-layer material closing structure of a filling bag with a built-in valve port;

fig. 2 is a schematic view of a multilayer material closing structure of a filling bag with a valve port inside.

Reference numerals: 1. a barrel; 2. a valve port is arranged inside; 2-1, an upper valve port structure; 2-2 lower valve port structure; 2-3, valve port overlapping area; 3. a bag body; 4. a lower bottom; 5. a bottom is arranged; 6. a first patch; 7. a second patch; 8. feeding a material closing film; 9. blanking a material closing film; 10. the membrane overlap region.

Detailed Description

The present invention will be described in further detail with reference to examples and drawings, but the present invention is not limited to these examples.

Example 1

A novel valve bag is shown in a combined figure 1 and comprises a barrel body 1 and a built-in valve port 2, wherein a bag body 3 is arranged in the middle of the barrel body 1, an upper bottom 4 is formed at the bottom of the barrel body 1 through a bottom pasting process, and an upper bottom 5 is formed at the top of the barrel body 1 through a bottom pasting process.

The lower bottom 4 is bonded and sealed through glue and a first patch 6, the upper bottom 5 is bonded and sealed at one end through glue and a second patch 7, the other end of the upper bottom 5 is provided with a built-in valve port 2, the built-in valve port 2 is communicated with the inside of the bag body 3, an upper valve port structure 2-1, a lower valve port structure 2-2 and a valve port overlapping region 2-3 are arranged inside the built-in valve port 2, and the upper valve port structure 2-1 and the lower valve port structure 2-2 are formed in a sheet-to-sheet staggered structure. The upper valve port structure 2-1 and the lower valve port structure 2-2 are arranged as one layer or two or more layers, in this embodiment, they are single-layer paper structures. An upper material closing film 8 is arranged in the upper layer valve port structure 2-1, a lower material closing film 9 and a film overlapping area 10 converged at two ends are arranged in the lower layer valve port structure 2-2, and the film overlapping area 10 is positioned in the valve port overlapping area 2-3.

The multilayer structure of the upper valve port structure 2-1 and the lower valve port structure 2-2 is a glue bonding forming structure or a composite multilayer structure. In the setting position, the upper valve port structure 2-1 and the lower valve port structure 2-2 are arranged in a flush manner or in an uneven length manner near the inner part of the built-in valve port 2, in the embodiment, the upper valve port structure 2-1 and the lower valve port structure 2-2 are arranged in a flush manner near the outer part of the built-in valve port 2.

Example 2

A novel valve bag is shown in a combined figure 2 and comprises a barrel body 1 and a built-in valve port 2, wherein the middle of the barrel body 1 is a bag body 3, the bottom of the barrel body 1 is formed into a lower bottom 4 through a bottom pasting process, and the top of the barrel body 1 is formed into an upper bottom 5 through a bottom pasting process.

The lower bottom is bonded and sealed through glue and a first patch 6, one end of the upper bottom 5 is sealed through the glue and a second patch 7, the other end of the upper bottom 5 is provided with a built-in valve port 2, the built-in valve port 2 is communicated with the inside of the bag body 3, and an upper valve port structure 2-1, a lower valve port structure 2-2 and a valve port overlapping area 2-3 are arranged inside the built-in valve port 2. The upper layer valve port structure 2-1 and the lower layer valve port structure 2-2 are arranged into one layer or are arranged into double layers or multiple layers.

The multilayer structure of the upper valve port structure 2-1 and the lower valve port structure 2-2 is a glue bonding forming structure or a composite multilayer structure. In the setting position, the upper layer valve port structure 2-1 and the lower layer valve port structure 2-2 are arranged flush close to the inner part of the built-in valve port 2, and are arranged flush close to the outer part of the built-in valve port 2. The present embodiment is a multi-ply paper structure.

An upper material closing film 8 is arranged in the upper layer valve port structure 2-1, a lower material closing film 9 and a film overlapping area 10 converged at two ends are arranged in the lower layer valve port structure 2-2, and the film overlapping area 10 is positioned in the valve port overlapping area 2-3.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.

Claims

1. A novel valve port bag comprises a cylinder body (1) and a built-in valve port (2);

the middle part of the cylinder body (1) is provided with a bag body (3);

the bottom of the cylinder body (1) forms a lower bottom (4) through a bottom pasting process;

the top of the cylinder body (1) is formed into an upper bottom (5) through a bottom pasting process;

the bag is characterized in that the lower bottom (4) is bonded and sealed with the first patch (6) through glue, one end of the upper bottom (5) is sealed through the glue and the second patch (7), the built-in valve port (2) is installed at the other end of the upper bottom (5), and the built-in valve port (2) is communicated with the inside of the bag body (3), and the bag is characterized in that:

the built-in valve port (2) comprises an upper-layer valve port structure (2-1), a lower-layer valve port structure (2-2) and a valve port overlapping area (2-3).

2. The novel valve bag of claim 1, wherein: the material closing device is characterized in that a material film (8) is arranged in the upper layer valve port structure (2-1), a material film (9) is arranged in the lower layer valve port structure (2-2), a film overlapping area (10) is formed in the valve port overlapping area (2-3), and the material closing film (8), the material closing film (9) and the film overlapping area (10) jointly play a material closing role.

3. The novel valve bag of claim 1, wherein: the upper valve port structure (2-1) is a single-layer structure or a multi-layer structure.

4. The novel valve bag of claim 1, wherein: the lower valve port structure (2-2) is a single-layer structure or a multi-layer structure.

5. The novel valve bag of claim 1, wherein: the upper layer valve port structure (2-1) and the lower layer valve port structure (2-2) are formed by sheet lap joint forming, sheet staggered forming or double-layer cylinder valve forming.

6. The novel valve bag of claim 2, wherein: the upper material closing film (8) and the lower material closing film (9) are arranged into one layer or a plurality of layers.

7. The novel valve bag of claim 2, wherein: the multilayer structure of the upper valve port structure (2-1), the lower valve port structure (2-2) and the upper material closing film (8) and the lower material closing film (9) is a glue bonding forming structure or a composite multilayer structure.

8. The novel valve bag of claim 1, wherein: the upper valve port structure (2-1) and the lower valve port structure (2-2) are arranged in a flush manner or in uneven lengths close to the inner part of the bag body, and are arranged in a flush manner close to the outer part of the built-in valve port (2).