CN113172945A

CN113172945A - Side-edge middle-sealed bottom three-dimensional paper bag and forming process thereof

Info

Publication number: CN113172945A
Application number: CN202110409816.XA
Authority: CN
Inventors: 吴仕飞; 虞臣昌
Original assignee: Zhejiang Zhengwei Machinery Co ltd
Current assignee: Wu Shifei
Priority date: 2021-04-16
Filing date: 2021-04-16
Publication date: 2021-07-27

Abstract

The invention belongs to the technical field of packaging bags, and discloses a side-edge middle-sealed bottom three-dimensional paper bag which comprises a bag body consisting of a front surface, a side surface and a bottom surface, wherein a bag opening is defined at the upper end of the bag body by the front surface and the side surface, the front surface is symmetrically formed at two ends of the bottom surface, the side surface comprises connecting surfaces formed at two sides of the front surface, the connecting surfaces can be turned over relative to the front surface, the connecting surfaces at two sides of the front surface at one end are connected to the connecting surfaces at two sides of the front surface at the other end through glue, bottom wrapping edges are formed at one ends, close to the bottom surface, of the connecting surfaces, and the side surface is connected with the bottom surface through the glue. The packaging bag is attractive in appearance and stable in structure, and the bottom of the packaging bag has good bearing capacity.

Description

Side-edge middle-sealed bottom three-dimensional paper bag and forming process thereof

Technical Field

The invention belongs to the technical field of packaging bags, and relates to a side-edge middle-sealed bottom three-dimensional paper bag and a forming process thereof.

Background

The packaging bag is a bag which is used for packaging and storing various articles and is convenient for people to carry, and can be seen everywhere in daily life and industrial production. Modern packaging bags comprise various categories such as paper bags, cloth belts and plastic bags, wherein the paper bags are often required to have a better stress structure due to the special effect of brittle and thin materials, so that damage caused by insufficient bearing capacity is avoided.

If CN202020053396.7 discloses three-dimensional container bag at bottom of bilateral center seal M, including the bag body, the bag body comprises front, bottom surface and side, the sack is formed to the top of the bag body, the side includes first side and second side, and first side is connected to on the second side through the gluing agent, still includes that the bottom is bordured, and the bottom is bordured and is glued side and bottom surface through the gluing agent, and the bottom is bordured and is located the outside of bottom surface to be connected to the inner wall of first side and second side through the gluing agent.

In above-mentioned paper bag, because the bottom is bordured and is located the outside of bottom surface, after the bag body shaping, the bottom is bordured and is connected on the inner wall of side, when putting into article in the bag, the weight of article in the bag will be born by the bottom surface, the bottom is bordured and then has only played the effect of connecting side and bottom surface in the container bag, consequently when article in the bag is overweight, the risk of disconnection still exists in being connected between side and the bottom surface, it is difficult to make the atress structure of container bag obtain reasonable optimization to carry out the bearing only by the bottom surface.

Aiming at the problems, a paper bag with a more reasonable stress structure and a forming process of the paper bag can be designed.

Disclosure of Invention

According to the problems, the invention provides the side-edge middle-sealed bottom three-dimensional paper bag and the forming process thereof, the force bearing structure of the paper bag is more reasonable, the bottom surface of the paper bag has better bearing capacity, and the forming process of the paper bag can realize high-efficiency production of the paper bag.

The purpose of the invention is realized as follows:

the utility model provides a three-dimensional container bag of bottom of package in side, includes the bag body of compriseing front, side and bottom surface, openly be injectd the sack with the side in the upper end of the bag body, the front symmetry form in the both ends of bottom surface, the side including be formed in the face of connecting of front both sides is connected the face and can be relative openly turn over a book, one end the face of connecting of front both sides is connected to the other end through glue the face of connecting of front both sides, be close to on the face the one end of bottom surface all is formed with the bottom and bordures, and the bottom is bordured and will through glue the side is connected with the bottom surface.

Furthermore, the bottom wrapping edge can be turned over relative to the connecting surface and is connected to the lower end of the bottom surface through glue.

Further, the bottom wrapping edges are connected in an up-and-down overlapping mode through glue.

Furthermore, the connecting surfaces are sealed in the middle and are connected in an up-and-down overlapping mode through glue.

Furthermore, the side surfaces and the bottom surface are both provided with inward folding indentations.

Furthermore, a flanging crease is formed on the bag opening.

Furthermore, a handle is connected to the bag opening.

Furthermore, a through hole is formed on the bag opening, and a lifting rope is connected to the through hole.

A forming process of a side-edge middle-sealed bottom three-dimensional paper bag comprises the following steps:

1) obtaining paper of paper bags with corresponding specifications, and stamping the paper into a corresponding shape;

2) processing the flanging crease at the bag opening, and processing the inward folding indentation on the side surface and the bottom surface;

3) coating glue at the pocket openings on the inner sides of the paper sheets and folding along the flanging creases;

4) attaching the handle to the bag opening, or punching the bag opening to obtain the through hole and punching an iron buckle;

5) coating glue on the pasting area of the connecting surface and the bottom wrapping edge, and connecting the connecting surface and the bottom wrapping edge in an up-and-down overlapping manner through the glue to obtain the complete side surface and the bottom wrapping edges which are connected with each other;

6) folding the connected bottom wrapping edges towards the bottom surface, and connecting the bottom wrapping edges to the lower end of the bottom surface through glue to obtain a formed bag body;

7) and folding the formed bag body into a sheet shape along the inward folding indentation.

Compared with the prior art, the invention has the outstanding and beneficial technical effects that:

1. the bottom of this container bag is bordured has not only realized being connected side and bottom surface, has played the effect that supplementary bottom surface carries out the bearing more simultaneously, when guaranteeing that bag body sound construction, has optimized its atress structure, has strengthened the bearing capacity of bottom surface effectively.

2. This container bag all does not have crease on two fronts after the shaping, can not influence the positive printed pattern at the container bag for this container bag whole appearance is more pleasing to the eye.

3. The paper bag has multiple folding modes and can meet different production and transportation requirements.

4. The forming process of the paper bag is convenient and easy to realize, and is favorable for realizing large-scale batch production of the paper bag.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural view of the unfolded state of the packaging bag.

Fig. 2 is a perspective view of the packing bag.

Fig. 3 is a first schematic view of the internal structure of the packaging bag.

Fig. 4 is a second schematic view of the internal structure of the packaging bag.

Fig. 5 is a first schematic structural view of the folded state of the packaging bag.

Fig. 6 is a first perspective view of the folded packaging bag.

Fig. 7 is a second schematic view of the folded state of the packaging bag.

Fig. 8 is a second perspective view of the folded package of the packing bag.

Fig. 9 is a flow chart of the packaging bag forming process.

0-bag body, 1-front, 2-side, 21-connecting surface, 211-bottom edge wrapping, 3-bottom, 4-bag opening, 5-internal folding crease, 6-flanging crease, 7-handle and 8-perforation.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.

The invention will be further described in the following with reference to specific embodiments thereof,

as shown in fig. 1-4, a side-edge bottom-sealed three-dimensional paper bag comprises a bag body 0 composed of a front surface 1, a side surface 2 and a bottom surface 3, wherein a bag opening 4 is defined at the upper end of the bag body 0 by the front surface 1 and the side surface 2, the front surface 1 is symmetrically formed at two ends of the bottom surface 3, the side surface 2 comprises connecting surfaces 21 formed at two sides of the front surface 1, the connecting surfaces 21 can be turned over relative to the front surface 1, the connecting surfaces 21 at two sides of the front surface 1 at one end are connected to the connecting surfaces 21 at two sides of the front surface 1 at the other end through glue, a bottom edge cover 211 is formed at one end of each connecting surface 21 close to the bottom surface 3, and the side surface is connected with the bottom surface through glue by the bottom edge cover 211. Specifically, in the paper bag, after the front surface 1 is folded and erected relative to the bottom surface 3, the connecting surface 21 is folded relative to the front surface 1, so that the connecting surfaces 21 on the two front surfaces 1 are close to each other and then are bonded and connected through glue, and then the complete side surface 2 is obtained, and finally the bottom edge 211 is bonded and connected to the bottom surface 3 through glue, and finally the formed bag body 0 is obtained. The bag body 0 obtained through the above steps has the advantages that the connecting surface 21 is connected to the bottom surface 3, and the bottom edge 211 can assist the bottom surface 3 in bearing, so that the bearing capacity of the bottom surface 3 is improved.

Further, the bottom edge cover 211 can be folded relative to the connecting surface 21 and connected to the lower end of the bottom surface 3 through glue. Specifically, after the side surface 2 is erected and connected to the bottom surface 3 for forming, the bottom edge 211 is turned over and attached to the lower end of the bottom surface 3 through glue, so that the side surface 2 and the bottom surface 3 are connected, because the bottom edge 211 is connected to the lower end of the bottom surface 3 to wrap the lower end of the bag body 0, a leak at the lower end of the bag body 0 is avoided, and meanwhile, the bottom surface 3 also avoids the bottom edge 211 from contacting with an object in the bag and directly bearing the load, so that the connection between the side surface 2 and the bottom surface 3 is not easily broken.

Further, the bottom wrapping edges 211 are connected in an up-and-down overlapping mode through glue. Specifically, when the bottom covering edge 211 is overlapped up and down, the overlapped parts of the bottom covering edge 211 are connected by glue, and the connection between the side surface 2 and the bottom surface 3 is firmer when the connected bottom covering edge 211 is connected to the bottom surface 3.

Further, the connecting surfaces 21 are sealed and connected in an up-and-down overlapping manner by glue. Specifically, when the connecting surface 21 is overlapped up and down, the overlapped parts are connected by glue, so that a firm side surface is obtained.

As shown in fig. 5 to 8, the inner folding creases 5 are formed on both the side surfaces 2 and the bottom surface 3. Specifically, the packaging bag can be folded through the inner folding pressure marks 5 after being formed, so that the packaging bag is more convenient to store and transport. The folding mode of the packaging bag comprises a pointed bottom mode in which the side surface 2 is folded inwards, the bottom surface 3 is folded inwards and protrudes, and an M bottom mode in which the side surface 2 and the bottom surface 3 are both folded inwards.

As shown in fig. 3-4, the mouth 4 is formed with a crease 6. Specifically, 4 departments of sack accessible turn over 6 book of turn-ups creases to form and have multilayer structure sack 4 increases the intensity of sack 4 makes this packing carton more firm.

As shown in fig. 2, a handle 7 is connected to the bag opening 4. Specifically, hand (hold) 7 is connected to sack 4 to the user carries and takes this wrapping bag, hand (hold) 7 can be the slice, also can be the round handle.

Furthermore, a through hole 8 is formed on the bag opening 4, and a lifting rope is connected to the through hole 8. Specifically, in addition to connecting a handle to the bag opening 4, a lifting rope may be passed through the through hole 8, and the lifting rope may be fixed to the bag opening 4 by attaching an iron buckle, so that a user may carry the bag.

As shown in fig. 9, a process for forming a side-in-side bottom-sealed three-dimensional paper bag comprises the following steps:

2) processing the flanging crease 6 at the bag opening 4, and processing the inner folding crease 5 on the side surface 2 and the bottom surface 3;

3) coating glue on the bag opening 4 on the inner side of the paper and folding along the flanging crease 6;

4) attaching the handle 7 to the bag opening 4, or punching the bag opening 4 to obtain the through hole 8 and punching an iron buckle;

5) coating glue on the pasting area of the connecting surface 21 and the bottom edge cover 211, and connecting the connecting surface 21 and the bottom edge cover 211 in an up-and-down overlapping manner through the glue to obtain the complete side surface 2 and the bottom edge cover 211 which are connected with each other;

6) folding the connected bottom wrapping edges 211 towards the bottom surface 3, and connecting the bottom wrapping edges 211 to the lower end of the bottom surface 3 through glue to obtain the formed bag body 0;

7) and folding the formed bag body into a sheet shape along the inner folding indentation 5.

Specifically, in this forming technology, connect face 21 interconnect and form completely the process of side 2 is through will not scribble glue connect face 21 paste to scribbled glue realize on connecting face 21, because bottom bordure 211 form in connect on the face 21, connect face 21 and turn over a book and can drive when pasting bottom bordure 211 is close to each other and accomplish and is connected, interconnect bottom bordure 211 turns over the book after the book and pastes supreme through scribbling the region of glue the lower extreme of bottom surface 3, alright 0 bottom gap of the bag body is wrapped up, thereby makes the bottom of the bag body 0 is consolidated and banding.

The handle 7 is connected to the bag opening 4, and a lifting rope can penetrate through the through hole 8 to replace the handle 7, so that the packaging bag is convenient to carry.

When the packaging bag is folded, the folding modes include the inward folding of the side surface 2, the protruding sharp bottom type after the bottom surface 3 is folded, and the M bottom type obtained after the inward folding of the side surface 2 and the bottom surface 3, the two folding modes can be automatically folded through machinery, and the selection of the folding modes is determined according to actual production requirements.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims

1. The utility model provides a three-dimensional container bag of bottom of package in side, includes the bag body of compriseing front, side and bottom surface, openly be injectd the sack with the side in the upper end of the bag body, its characterized in that, openly the symmetry be formed in the both ends of bottom surface, the side including be formed in the connection face of front both sides is connected the face and can be relative openly turn over a book, one end the connection face of front both sides is connected to the other end through glue the connection face of front both sides is close to on the connection face the one end of bottom surface all is formed with the bottom and bordures, and the bottom is bordured and will through glue the side is connected with the bottom surface.

2. The paper bag as claimed in claim 1, wherein the bottom cover is folded over the connecting surface and connected to the lower end of the bottom surface by glue.

3. The bottom-in-side sealed three-dimensional paper bag according to claim 1, wherein the bottom wrapping edges are connected in an up-and-down overlapping manner by glue.

4. The three-dimensional paper bag with bottom sealed in side edge as claimed in claim 1, wherein the connecting surfaces are sealed in the middle and connected by glue in an up-and-down overlapping manner.

5. The three-dimensional paper bag with bottom sealed in side edge as claimed in claim 1, wherein the side surface and the bottom surface are formed with inward folding indentations.

6. The three-dimensional paper bag with bottom sealed in side edge as claimed in claim 1, wherein the mouth of the bag is formed with a flange crease.

7. The three-dimensional paper bag with bottom sealed in side edge as claimed in claim 1, wherein a handle is connected to the bag opening.

8. The three-dimensional paper bag with bottom sealed in side edge as claimed in claim 1, wherein the mouth of the bag is formed with a perforation, and a lifting rope is connected to the perforation.

9. A forming process of a side-edge middle-sealed bottom three-dimensional paper bag is characterized by comprising the following steps: