CN220743941U

CN220743941U - Plastic packaging bag

Info

Publication number: CN220743941U
Application number: CN202322306666.7U
Authority: CN
Inventors: 陈思红; 黄小智
Original assignee: Zhejiang Xinhefa Lianbin Packaging Technology Co ltd
Current assignee: Zhejiang Xinhefa Lianbin Packaging Technology Co ltd
Priority date: 2023-08-28
Filing date: 2023-08-28
Publication date: 2024-04-09
Anticipated expiration: 2033-08-28

Abstract

The utility model discloses a plastic packaging bag, which comprises a cylindrical bag body; one end of the bag body is provided with at least one first strip-shaped connecting area along the longitudinal direction of the bag body, and the first strip-shaped connecting area seals the end part of the bag body; each first strip-shaped connecting area is provided with at least one exhaust channel, the exhaust channels are communicated with the inside and the outside of the bag body, the inside and the outside of the bag body are communicated through the exhaust channels, and when the bag body is filled with the packing materials, the extruded air is rapidly discharged from the exhaust channels, so that adverse effects on filling are avoided.

Description

Plastic packaging bag

Technical Field

The utility model belongs to the technical field of plastic packaging, and particularly relates to a plastic packaging bag.

Background

Many products in life are packaged by using plastic packaging bags, and the plastic packaging bags are printed with product names, indicative patterns and various information. The plastic packaging bag is made of plastic, which is a material with synthetic or natural polymer resin as main material, and after various auxiliary agents are added, the plastic packaging bag has ductility at a certain temperature and pressure, and can be fixed in shape after cooling. In order to improve the productivity of product packaging, most of production enterprises fill packages into plastic packaging bags through mechanized production lines, one end of each plastic packaging bag is required to be sealed in advance, the packages are filled into the plastic packaging bags from the other end, the sizes of the plastic packaging bags are often closely matched with the sizes of the packages, such as paper extraction packages, the plastic packaging bags are filled with a plurality of small bags of paper extraction, air in the plastic packaging bags is compressed in the process of filling the packages, and whether the compressed air can be discharged quickly or not determines whether the production lines can smoothly and qualified for packaging production; and in the process of pre-sealing one end of the plastic packaging bag, the sealed plastic film is often extruded, and then welded or glued, so that residual air among the connected multi-layer plastic films cannot be discharged, and the random and uneven occurrence of a plurality of bubble-shaped residual air at the sealing position can be caused, so that the sealing strength is influenced, and the product quality is influenced. In addition, conventional plastic packaging bags are often provided with a handle region for convenience of carrying, but due to the control of the thickness of the plastic packaging bag, insufficient strength often occurs at the position of the handle region, and the plastic is severely deformed and even broken by stretching.

Disclosure of Invention

The utility model aims to provide a plastic packaging bag, which aims to solve the problem that air in the plastic packaging bag is rapidly discharged when the plastic packaging bag is filled with a package.

In order to solve the technical problems, the aim of the utility model is realized as follows:

a plastic packaging bag, which comprises a cylindrical bag body; one end of the bag body is provided with at least one first strip-shaped connecting area along the longitudinal direction of the bag body, and the first strip-shaped connecting area seals the end part of the bag body; at least one exhaust channel is arranged on each first strip-shaped connecting area, and the exhaust channels are used for communicating the inside of the bag body with the outside.

The above-mentioned scheme is based on and is a preferable scheme of the above-mentioned scheme: the first strip-shaped connecting areas are arranged in parallel, and a handle area is arranged between the two first strip-shaped connecting areas.

The above-mentioned scheme is based on and is a preferable scheme of the above-mentioned scheme: and cutting the part of the bag body between the two first strip-shaped connecting areas to obtain the handle area.

The above-mentioned scheme is based on and is a preferable scheme of the above-mentioned scheme: the bag body is provided with a plurality of second strip-shaped connecting areas along the transverse direction of the bag body at the side where the first strip-shaped connecting areas are located; the second strip-shaped connecting areas are positioned on two sides of the handle area.

The above-mentioned scheme is based on and is a preferable scheme of the above-mentioned scheme: and two ends of the second strip-shaped connecting area are connected with the first strip-shaped connecting area, and the corner of the connecting part of the two is provided with an arc transition.

The above-mentioned scheme is based on and is a preferable scheme of the above-mentioned scheme: and a bubble collecting area is arranged at the joint of the two ends of the second strip-shaped connecting area and the first strip-shaped connecting area.

The above-mentioned scheme is based on and is a preferable scheme of the above-mentioned scheme: and forming the first strip-shaped connecting area and the second strip-shaped connecting area on the upper part and the lower part of the bag body longitudinally in a heating welding mode.

The above-mentioned scheme is based on and is a preferable scheme of the above-mentioned scheme: and a plurality of non-welding areas are arranged on the first strip-shaped connecting area at intervals, and the non-welding areas form the exhaust channel.

The above-mentioned scheme is based on and is a preferable scheme of the above-mentioned scheme: further comprises a reinforcing sheet; the reinforcing sheet is positioned between the upper part and the lower part of the side of the bag body where the handle area is located, and the upper surface and the lower surface of the edge of the reinforcing sheet are respectively welded with the upper part and the lower part at the positions where the first strip-shaped connecting area and the second strip-shaped connecting area are located.

The above-mentioned scheme is based on and is a preferable scheme of the above-mentioned scheme: the bag body is closed at the end far away from the handle area.

Compared with the prior art, the utility model has the following outstanding and beneficial technical effects: the inside of the bag body is communicated with the outside through the exhaust channel, when the packing material is filled in the bag body, the extruded air can be rapidly discharged from the exhaust channel, so that adverse effects on filling are avoided; the air between the upper part and the lower part of the bag body is collected in the air bubble collecting area under the extrusion action, so that random and uneven occurrence of a plurality of air bubble-like residual air at the sealing part is avoided, the sealing strength is influenced, and the product quality is influenced; through the setting of reinforcement piece, improved the intensity in handle district place to avoid the tensile serious deformation of plastics even cracked problem.

Drawings

FIG. 1 is a schematic view of a bag of the present utility model in a flat state;

FIG. 2 is a cross-sectional view taken at A-A in FIG. 1;

fig. 3 is a schematic diagram of a bag body tiling state in the second embodiment;

FIG. 4 is a cross-sectional view at B-B in FIG. 3;

fig. 5 is a schematic view of the state after the bag is filled with the package.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the present application more apparent, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings in the embodiments, and it is apparent that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments, based on the examples given, which a person of ordinary skill in the art would obtain without undue burden, are within the scope of protection of the present application.

In the description of the present application, it should be understood that the azimuth or positional relationship indicated by the terms "upper", "lower", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of description of the present application and to simplify the description, and do not indicate or imply that the apparatus or element referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present application.

In the description of the present application, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated.

Examples

Referring to FIGS. 1-2 and 5, a plastic package is disclosed herein comprising a tubular bag body 10; at least one first strip-shaped connecting area 21 is arranged at one end of the bag body 10 along the longitudinal direction of the bag body 10, and the first strip-shaped connecting area 21 seals the end part of the bag body 10; at least one air discharge channel 211 is provided on each first strip-shaped connection region 21, and the air discharge channels 211 communicate the inside of the bag body 10 with the outside. Specifically, as shown in fig. 1, preferably, the first strip-shaped connecting areas 21 are arranged in parallel, and the handle area 13 is arranged between the two first strip-shaped connecting areas 21. The handle area 13 is preferably obtained by cutting the portion of the bag 10 between the two first strip-shaped connecting areas 21, and by forming a handle position after cutting the portion of the bag 10, the cut portion of the bag can be pushed by a hand so as to penetrate the bag, so that the bag can be lifted. In addition, in order to enhance the strength of the handle area 13, it is further preferred that the bag body 10 is provided with a plurality of second strip-shaped connecting areas 23 along the lateral direction of the bag body 10 on the side where the first strip-shaped connecting areas 21 are located; the second strip-shaped connecting areas 23 are located on two sides of the handle area 13, and further preferably two ends of the second strip-shaped connecting areas 23 are connected with the first strip-shaped connecting areas 21, and the corners of the joints of the second strip-shaped connecting areas and the first strip-shaped connecting areas are provided with arc transition 26, so that the problem that the bag body is torn due to stress concentration in the process of lifting can be avoided due to the arrangement of the arc transition.

In the present embodiment, it is further preferable that the upper portion 11 and the lower portion 12 of the bag body 10 are formed into the first strip-shaped connecting region 21 and the second strip-shaped connecting region 23 by heat welding in the longitudinal direction. Namely, the first strip-shaped connecting region 21 and the second strip-shaped connecting region 23 are formed by forming a welding layer 22 between the upper portion 11 and the lower portion 12 of the bag body in a manner of applying pressure to the upper portion 11 and the lower portion 12 of the bag body in the region where the first strip-shaped connecting region 21 and the second strip-shaped connecting region 23 are located by heating the mold, combining ultrasonic waves and high frequency waves with the mold; of course, the first strip-shaped connecting area 21 and the second strip-shaped connecting area 23 can be formed by gluing the positions of the first strip-shaped connecting area 21 and the second strip-shaped connecting area 23 and then bonding the positions by using glue. Further, a plurality of non-welding regions 221 are provided at intervals on the first strip-shaped connection region 21, and the non-welding regions 221 form the exhaust passage 211. Specifically, a plurality of gaps with intervals can be arranged on the die, the positions of the gaps correspond to those of the non-welding areas 221, so that in the welding process, as no pressure acts at the gaps, the upper part 11 and the lower part 12 of the bag body cannot form a welding layer 22, namely, the non-welding areas, so that an exhaust channel 211 is formed, the interior of the bag body 10 is communicated with the outside through the exhaust channel 211, and when the bag body 10 is filled with the packing material, the extruded air can be rapidly discharged from the exhaust channel, thereby avoiding adverse effects on filling.

In addition, since the air is provided between the upper portion 11 and the lower portion 12 of the pouch body, the air between the two ends of the second strip-shaped connection region 23 and the first strip-shaped connection region 21 is difficult to be rapidly discharged due to the large welding area at the connection of the two ends of the second strip-shaped connection region 23 due to the extrusion of the mold in the welding process, so that bubbles are generated, and the bubbles are random in position and different in size, so that the strength and the appearance of the welding position are easily adversely affected. For this reason, in this embodiment, the air bubble collecting area 25 is disposed at the connection position between the two ends of the second strip-shaped connecting area 23 and the first strip-shaped connecting area 21, that is, the concave hole is disposed on the extrusion surface of the die, so that the concave hole is not extruded in the welding process, that is, the welding is not generated, a cavity area is formed, and then the air between the upper portion 11 and the lower portion 12 of the bag body is collected in the air bubble collecting area 25 under the extrusion action. The bubble collecting region 25 is preferably located in the middle of the junction of the two ends of the second strip-shaped connecting region 23 and the first strip-shaped connecting region 21.

After the bag 10 has been filled with the wrapper, the bag 10 may still be sealed at the end 14 remote from the handle region 13 by welding or gluing to form a complete plastic package.

Examples

Considering that insufficient strength often occurs at the handle area due to the control of the thickness of the plastic packaging bag, the plastic is severely deformed in stretching and even broken. For this purpose, as shown in detail in fig. 3-4, the present embodiment further comprises a reinforcing sheet 30 (dashed line position in fig. 3); the reinforcing sheet 30 is located between the upper portion 11 and the lower portion 12 of the side of the handle region 13 of the bag body 10, and the upper and lower surfaces of the edges of the reinforcing sheet 30 are welded to the upper portion 11 and the lower portion 12 at the positions of the first strip-shaped connecting region 21 and the second strip-shaped connecting region 23, respectively. Specifically, in the welding process, the upper surface of the reinforcing sheet 30 is welded with the upper portion 11 of the bag body to form a first welding layer 22a, and the lower surface of the reinforcing sheet is welded with the lower portion 12 of the bag body to form a second welding layer 22b, so that the strength of the handle region 13 is improved by the arrangement of the reinforcing sheet 30, and the problem that the plastic is severely deformed and even broken due to stretching is avoided. It should be noted that, when the handle section 13 is cut, the upper portion, the lower portion, and the reinforcing sheet of the bag body 10 are cut at the same time.

The above embodiments are only preferred embodiments of the present utility model, and are not intended to limit the scope of the present utility model in this way, therefore: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims

1. A plastic packaging bag, characterized in that: comprises a cylindrical bag body (10); one end of the bag body (10) is provided with at least one first strip-shaped connecting area (21) along the longitudinal direction of the bag body (10), and the first strip-shaped connecting area (21) is used for sealing the end part of the bag body (10); at least one exhaust channel (211) is arranged on each first strip-shaped connecting area (21), and the exhaust channels (211) are used for communicating the inside of the bag body (10) with the outside.

2. A plastic package according to claim 1, wherein: the first strip-shaped connecting areas (21) are arranged in parallel, and a handle area (13) is arranged between the two first strip-shaped connecting areas (21).

3. A plastic package according to claim 2, wherein: and (3) cutting the part of the bag body (10) between the two first strip-shaped connecting areas (21) to obtain the handle area (13).

4. A plastic package according to claim 3, wherein: the bag body (10) is provided with a plurality of second strip-shaped connecting areas (23) along the transverse direction of the bag body (10) at the side where the first strip-shaped connecting areas (21) are located; the second strip-shaped connecting areas (23) are positioned on two sides of the handle area (13).

5. A plastic package according to claim 4, wherein: the two ends of the second strip-shaped connecting area (23) are connected with the first strip-shaped connecting area (21), and the corner of the joint of the two areas is provided with an arc transition (26).

6. A plastic package according to claim 4, wherein: and a bubble collecting area (25) is arranged at the joint of the two ends of the second strip-shaped connecting area (23) and the first strip-shaped connecting area (21).

7. A plastic package according to claim 4, wherein: the upper part (11) and the lower part (12) of the bag body (10) are longitudinally welded by heating to form the first strip-shaped connecting area (21) and the second strip-shaped connecting area (23).

8. A plastic package according to claim 7, wherein: a plurality of non-welding areas are arranged on the first strip-shaped connecting area (21) at intervals, and the non-welding areas form the exhaust channel (211).

9. A plastic package according to any one of claims 4-8, wherein: further comprising a reinforcing sheet (30); the reinforcing sheet (30) is located between the upper part (11) and the lower part (12) of the side of the handle area (13) of the bag body (10), and the upper surface and the lower surface of the edge of the reinforcing sheet (30) are respectively welded with the upper part (11) and the lower part (12) at the positions of the first strip-shaped connecting area (21) and the second strip-shaped connecting area (23).

10. A plastic package according to claim 9, wherein: the bag body (10) is closed at the end remote from the handle region (13).