CN213083968U

CN213083968U - WWZ type valve port self-closing packaging bag

Info

Publication number: CN213083968U
Application number: CN202021874482.0U
Authority: CN
Inventors: 吴唯质
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-09-01
Filing date: 2020-09-01
Publication date: 2021-04-30
Anticipated expiration: 2030-09-01

Abstract

The utility model relates to a wrapping bag technical field just discloses a WWZ type valve opening self-closing wrapping bag, including the valve formula wrapping bag, the valve port has been seted up to the side of valve formula wrapping bag, and the valve port inboard installs the rectangle plastic film through-hole, set up the exhaust hole that is located the valve port below on the valve formula wrapping bag, and the exhaust hole department of valve formula wrapping bag installs the air discharge spare. This WWZ type valve port self-closing wrapping bag, self-closing mode simple structure, easy to produce has used the flexible physical characteristic of plastic film and the material characteristic that plastic film produced static easily ingeniously, forms the self-closing valve port, has solved effectively in the canning technological process that the wrapping bag has "standing up" from canning, title mill to belt conveying and has had the problem of having compelled the powder of getting rid of, has prevented the powder class material because of the problem that sack switching-over powder class material is compelled to leak simultaneously effectively.

Description

WWZ type valve port self-closing packaging bag

Technical Field

The utility model relates to a wrapping bag technical field specifically is a WWZ type valve opening self-closing wrapping bag.

Background

The valve type packaging bag is widely applied to the production of powder such as stone powder, gypsum powder, mud powder, cement powder and the like.

At present, powder materials leak out of the packaging bag in the filling process of the valve type packaging bag, and the flying powder forms dust which floats in the air and falls on equipment and falls on the ground, so that the production environment is extremely severe and the air is seriously polluted. The powder material can be directly conveyed into a transportation link, powder materials can overflow from a valve port in transportation to form transportation transitive polluted environment, and a sealing process is not added to a valve port after some powder materials are canned, but the powder materials are naturally sealed by powder extrusion in a bag.

Disclosure of Invention

To the above-mentioned not enough that prior art exists, the utility model provides a WWZ type valve port self-closing wrapping bag.

The utility model provides a following technical scheme: a WWZ-type valve port self-closing packaging bag comprises a valve type packaging bag, wherein a valve port is formed in the side face of the valve type packaging bag, a rectangular plastic film through hole is formed in the inner side of the valve port, an exhaust hole located below the valve port is formed in the valve type packaging bag, and an exhaust piece is installed at the exhaust hole of the valve type packaging bag.

Preferably, one end of the rectangular plastic film through hole is bonded with the edge of the valve port, and the other end of the rectangular plastic film through hole is in a free state and is longer than the valve port.

Preferably, the exhaust spare includes the kraft paper, melts the cotton constitution of spouting, the kraft paper sets up two, and melts the cotton layer of spouting and paste between two kraft papers, melt the cotton layer of spouting by one deck or multilayer melt and spout cotton and constitute, and the periphery on melt the cotton layer of spouting passes through glue and seals, the through-hole has been seted up at the middle part of kraft paper, the exhaust spare is pasted in the exhaust hole department of valve formula wrapping bag.

Compared with the prior art, the utility model discloses possess following beneficial effect:

the WWZ type valve port self-closing packaging bag is characterized in that the structure of the exhaust piece is simple, the production is easy, the existing powder canning process is not required to be changed, ventilation is added at the design position in the valve bag production process, a rectangular plastic film is added in the valve port, and the ventilation position is covered by melt-blown cotton.

The exhaust part is designed below the valve port, the exhaust port can be sealed and closed together in the process of next sealing the valve port, so that the situation that powder materials are affected with damp due to the air permeability of the melt-blown cotton can be avoided, and meanwhile, the situation that powder leaks due to the damage of the melt-blown cotton can be avoided.

Rectangular plastic film through holes are added in the valve port, and the valve port is additionally arranged on the inner side of the valve port and is longer than the valve port, so that the characteristic of softness and sagging of the plastic film is ingeniously applied, and the valve port of the kraft paper bag is closed from the inner side. Even if the outer side of the valve port of the kraft paper bag is in an open state, powder cannot be thrown out due to the change of the posture of the packaging bag;

the plastic film is applied to easily obtain the natural property of electrostatic induction; when the canning cylinder leaves the plastic film, the rectangular plastic film can be naturally adsorbed together under the action of static electricity to form adhesive closure, and no matter how the posture of the packaging bag is changed, residual air or materials in the packaging bag can not be thrown out due to the change of the posture of the packaging bag.

The defects of the existing valve type packaging bag are well overcome, the air quality of a production place is improved, the risk of silicosis of workers is reduced, the powder spraying and throwing process is radically cured, the on-site cleaning time is prolonged, the cleaning workload is reduced, the post establishment is reduced, and the labor efficiency is improved. The production cost of enterprises is reduced, thereby improving the profit of enterprises, solving the secondary pollution generated in transportation and improving the product packaging quality for powder finished products which directly enter the processes of storage, sale and transportation without sealing.

The defects of 'powder carrying in exhaust' and 'powder throwing in conveying' are effectively overcome, the production environment of a production workshop is greatly improved, the clean requirement on the powder material canning production can be realized, and the air quality of the production environment of the 'powder material' production industry is expected to be promoted to reach or improve the national standard.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the exhaust member of the present invention;

fig. 3 is a schematic structural diagram of the rectangular plastic film through hole of the present invention.

In the figure: 1. valve-type packaging bags; 2. a valve port; 3. an exhaust member; 31. kraft paper; 32. melt-blown cotton; 33. a through hole; 4. and (5) a rectangular plastic film through hole.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings of the embodiments of the present disclosure, and in order to keep the following description of the embodiments of the present disclosure clear and concise, a detailed description of known functions and known parts of the disclosure is omitted to avoid unnecessarily obscuring the concepts of the present disclosure.

Referring to fig. 1-3, a WWZ type valve port self-closing packaging bag comprises a valve type packaging bag 1, a valve port 2 is arranged on the side surface of the valve type packaging bag 1, a rectangular plastic film through hole 4 is arranged on the inner side of the valve port 2, an exhaust hole positioned below the valve port 2 is arranged on the valve type packaging bag 1, an exhaust member 3 is arranged at the exhaust hole of the valve type packaging bag 1, the pressure in the bag increases along with the increase of powder in the canning process, when the pressure in the packaging bag is greater than the external atmospheric pressure, the air in the bag carries the powder to flow to the exhaust hole with small air resistance pressure, the air is separated from the exhaust member due to the shielding of the exhaust member, the air flows through the exhaust hole and the exhaust member, the powder is blocked in the bag, and the exhaust and the powder cannot be forcedly discharged from a gap.

One end of the rectangular plastic film through hole 4 is bonded with the edge of the valve port 2, the other end of the rectangular plastic film through hole 4 is in a free state, the length of the rectangular plastic film through hole is larger than that of the valve port 2, electrostatic induction exists in the process that the metal cylinder enters and exits the rectangular plastic film through hole, and after the metal cylinder leaves the metal cylinder, the plastic film can be automatically pasted together due to the electrostatic, so that the valve port is closed. And because the length of the rectangular film through hole is larger than the length of the valve port, the part which is too long can naturally fatigue and droop to form a better closed state, so that powder materials are prevented from freely entering and exiting the packaging bag, and the posture of the closed packaging bag is changed in the process of turning over and conveying, so that the powder materials cannot be thrown out.

After the canning of metal can finished and withdrawing from the back, valve port 2 still is in the open mode, and this kind of open mode is at "turning over" in-process, and some powder class material can throw away from the valve port, consequently through increasing rectangle plastic film through-hole 4 in valve port 2, owing to install additional in valve port 2 inboard and be good at the valve port 2 of growing, has used the soft flagging characteristic of plastic film ingeniously, closes valve port 2 from the inboard. Even if the outer side of the valve port 2 is in an open state, the powder cannot be thrown out due to the change of the posture of the packaging bag.

The exhaust member 3 comprises kraft paper 31 and melt-blown cotton 32, the kraft paper 31 is provided with two, the melt-blown cotton layer 32 is adhered between the two kraft paper 31, the melt-blown cotton layer 32 is composed of one or more layers of melt-blown cotton, the periphery of the melt-blown cotton layer 32 is sealed through glue, a through hole 33 is formed in the middle of the kraft paper 31, the exhaust member 3 is adhered to an exhaust hole of the valve type packaging bag 1, and the exhaust hole is covered by the exhaust member 3. The good filterability of the melt-blown cotton 32 is utilized to effectively separate 'gas' and 'powder' at the melt-blown cloth, the 'gas' is discharged out of the bag through the melt-blown cotton 32 at a forward speed, and the 'powder' is left in the bag.

The above embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, the protection scope of the present invention is defined by the claims, and those skilled in the art or other fields can make various modifications or equivalent substitutions within the spirit and the protection scope of the present invention, but such modifications or equivalent substitutions should be considered as falling within the protection scope of the present invention.

Claims

1. The utility model provides a WWZ type valve port self-closing wrapping bag, includes valve formula wrapping bag (1), its characterized in that: the side surface of the valve type packaging bag (1) is provided with a valve port (2), the inner side of the valve port (2) is provided with a rectangular plastic film through hole (4), the valve type packaging bag (1) is provided with an exhaust hole positioned below the valve port (2), and the exhaust hole of the valve type packaging bag (1) is provided with an exhaust piece (3).

2. A WWZ-style valve-opening self-closing packaging bag according to claim 1, characterized in that: one end of the rectangular plastic film through hole (4) is bonded with the edge of the valve port (2), and the other end of the rectangular plastic film through hole (4) is in a free state and is longer than the valve port (2).

3. A WWZ-style valve-opening self-closing packaging bag according to claim 1, characterized in that: exhaust spare (3) include kraft paper (31), melt-blown cotton layer (32) and constitute, kraft paper (31) set up two, and melt-blown cotton layer (32) paste between two kraft paper (31), melt-blown cotton layer (32) are melted by one deck or multilayer and are blown cotton and constitute, and the periphery that melts cotton layer (32) passes through glue and seal, through-hole (33) have been seted up at the middle part of kraft paper (31), exhaust spare (3) are pasted in the exhaust vent department of valve formula wrapping bag (1).