CN217262075U

CN217262075U - Stretch-proofing flexible container

Info

Publication number: CN217262075U
Application number: CN202123290071.4U
Authority: CN
Inventors: 刘启友
Original assignee: Yiyuan Huifeng Plastic Woven Co ltd
Current assignee: Yiyuan Huifeng Plastic Woven Co ltd
Priority date: 2021-12-25
Filing date: 2021-12-25
Publication date: 2022-08-23
Anticipated expiration: 2031-12-25

Abstract

The utility model relates to a flexible container technical field, specifically a stretch-proofing flexible container, including the bag body, the bag body includes inlayer polypropylene woven sack, and outer polypropylene woven sack has been made up to the surface of inlayer polypropylene woven sack, adheres to have a negative poisson's ratio net area between inlayer polypropylene woven sack and the outer polypropylene woven sack, and the surface of outer polypropylene woven sack adheres to have ultraviolet resistance PET membrane; the top end of the bag body is sewed with an upper opening reinforcing band, the upper opening reinforcing band and the bag body are jointly sewed with a side edge reinforcing band, and the side edge reinforcing band is sewed with a double-layer hanging band. The utility model discloses a negative poisson's ratio net area of adhesion between inlayer polypropylene braided bag and outer polypropylene braided bag has improved the shear modulus of the bag body, anti breach performance, anti fracture performance and resilience toughness, and the structural strength of the bag body is high, long service life.

Description

Stretch-proofing flexible container

Technical Field

The utility model relates to a flexible container technical field specifically is a stretch-proofing flexible container.

Background

Flexible containers, commonly known as ton bags, are flexible packages woven from polyester fibers such as polyethylene or polypropylene, and are usually lifted and carried by slings to meet the requirements of filling and efficient unloading on an automatic production line. Most of the existing flexible freight bags have the problems of low tensile strength, poor physical strength and the like, and can not meet the actual use requirements.

Therefore, how to design a tensile container bag becomes a problem to be solved currently in the technical field.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an anti-stretching flexible container bag to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: an anti-stretching container bag comprises a bag body, wherein the bag body comprises an inner layer polypropylene woven bag, an outer layer polypropylene woven bag is sewn on the outer surface of the inner layer polypropylene woven bag, a negative Poisson's ratio mesh belt is adhered between the inner layer polypropylene woven bag and the outer layer polypropylene woven bag, and an anti-ultraviolet PET film is adhered to the surface of the outer layer polypropylene woven bag;

an upper opening reinforcing band is sewn at the top end of the bag body, a side edge reinforcing band is sewn together with the bag body, and a double-layer hanging band is sewn on the side edge reinforcing band.

Optionally, the negative poisson's ratio mesh belt is woven by polyester fibers, the negative poisson's ratio mesh belt comprises rectangular meshes, four vertex angles of the rectangular meshes are provided with concave tetragons, and the centers of the rectangular meshes are provided with concave hexagons.

Optionally, the rectangular grids are uniformly distributed in a matrix manner, and strips connected with the rectangular grids are arranged at the outer side concave positions of the concave hexagons.

Optionally, inlayer polypropylene woven sack and outer polypropylene woven sack have the same tensile strength and elongation, the inner wall coating of inlayer polypropylene woven sack has ultraviolet resistance coating.

Optionally, the double-layer sling is formed by sewing two polypropylene belts distributed inside and outside, and the two polypropylene belts have the same tensile strength and elongation.

Compared with the prior art, the utility model discloses possess following beneficial effect: the utility model discloses a negative poisson's ratio net area of adhesion between inlayer polypropylene braided bag and outer polypropylene braided bag has improved the shear modulus of the bag body, anti breach performance, anti fracture performance and resilience toughness, and the structural strength of the bag body is high, long service life.

Drawings

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

FIG. 2 is a cross-sectional view of the middle bag body of the present invention;

fig. 3 is a schematic structural view of the medium-negative poisson's ratio lattice belt of the present invention.

In the figure: 1. a bag body; 2. the inner layer is a polypropylene woven bag; 3. an outer layer polypropylene woven bag; 4. a negative poisson ratio mesh belt; 401. rectangular grids; 402. a concave four-star shape; 403. an inward concave hexagon; 404. a strip; 5. an ultraviolet-resistant PET film; 6. an upper mouth reinforcing band; 7. a lateral edge reinforcing band; 8. a double-layer sling.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example (b): referring to fig. 1 and 2, the utility model provides a stretch-proofing flexible container, including the bag body 1, the bag body 1 includes inlayer polypropylene woven sack 2, and outer polypropylene woven sack 3 has been made to the surface of inlayer polypropylene woven sack 2, is stained with negative poisson's ratio mesh area 4 between inlayer polypropylene woven sack 2 and the outer polypropylene woven sack 3. Wherein, inlayer polypropylene woven sack 2 and outer polypropylene woven sack 3 have the same tensile strength and elongation, and the inner wall coating of inlayer polypropylene woven sack 2 has the ultraviolet resistance coating, and the surface adhesion of outer polypropylene woven sack 3 has ultraviolet resistance PET membrane 5. The ultraviolet-resistant PET film 5 has smooth and glossy surface, can block ultraviolet rays, and has the characteristics of creep resistance, fatigue resistance, friction resistance and good dimensional stability. The ultraviolet-resistant coating and the ultraviolet-resistant PET film 5 respectively protect tertiary hydrogen atoms in the inner polypropylene woven bag 2 and the outer polypropylene woven bag 3 from being damaged by ultraviolet rays, protect the outer polypropylene woven bag 3 to be complete in structure, and prolong the service life of the bag body 1.

Referring to fig. 3, the negative poisson's ratio mesh belt 4 is woven by polyester fiber, and the negative poisson's ratio mesh belt 4 is integrally formed by a rectangular mesh 401, an inward concave tetragon 402, an inward concave hexagon 403 and a strip 404. Four top corners of the rectangular grid 401 are provided with concave four stars 402, and the center of the rectangular grid 401 is provided with concave hexagons 403. The rectangular grids 401 are uniformly distributed in a matrix form, and the concave positions on the outer sides of the concave hexagons 403 are provided with strips 404 connected with the rectangular grids 401. At the connection of strip 404, indent four star 402, indent hexagon 403 and rectangular grid 401 connect into a whole, and negative poisson ratio grid area 4 possesses two kinds of negative poisson ratio grids, has improved the shear modulus of bag body 1, anti gap performance, anti fracture performance and resilience toughness, and the structural strength of bag body 1 is high, long service life.

Referring to fig. 1, an upper reinforcing band 6 is sewn at the top end of the inner polypropylene woven bag 2 and the top end of the outer polypropylene woven bag 3 in the bag body 1, a side reinforcing band 7 is sewn at the side edge of the inner polypropylene woven bag 2, the side edge of the outer polypropylene woven bag 3 and the upper reinforcing band 6, and a double-layer hanging strip 8 is sewn at the side edge reinforcing band 7. The double-layer sling 8 is formed by sewing two polypropylene belts distributed inside and outside, and the two polypropylene belts have the same tensile strength and elongation.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an anti-stretching container bag, includes the bag body (1), its characterized in that: the bag body (1) comprises an inner layer polypropylene woven bag (2), an outer layer polypropylene woven bag (3) is sewn on the outer surface of the inner layer polypropylene woven bag (2), a negative Poisson ratio grid belt (4) is adhered between the inner layer polypropylene woven bag (2) and the outer layer polypropylene woven bag (3), and an ultraviolet-resistant PET film (5) is adhered on the surface of the outer layer polypropylene woven bag (3);

an upper opening reinforcing band (6) is sewn at the top end of the bag body (1), a side edge reinforcing band (7) is sewn together with the upper opening reinforcing band (6) and the bag body (1), and a double-layer hanging strip (8) is sewn on the side edge reinforcing band (7).

2. A stretch resistant bulk bag according to claim 1 wherein: the negative Poisson ratio grid belt (4) is formed by weaving polyester fibers, the negative Poisson ratio grid belt (4) comprises rectangular grids (401), four vertex angles of the rectangular grids (401) are provided with concave tetragons (402), and the centers of the rectangular grids (401) are provided with concave hexagons (403).

3. A stretch resistant bulk bag according to claim 2 wherein: rectangular grid (401) are matrix evenly distributed, the outside depressed part of indent hexagon (403) is equipped with strip (404) of being connected with rectangular grid (401).

4. A stretch resistant bulk bag according to claim 1 wherein: the inner polypropylene woven bag (2) and the outer polypropylene woven bag (3) have the same tensile strength and elongation, and the inner wall of the inner polypropylene woven bag (2) is coated with an ultraviolet-resistant coating.

5. A stretch resistant bulk bag according to claim 1 wherein: the double-layer sling (8) is formed by sewing two polypropylene belts distributed inside and outside, and the two polypropylene belts have the same tensile strength and elongation.