CN113816009A

CN113816009A - Multilayer composite high-toughness aluminum foil flexible container

Info

Publication number: CN113816009A
Application number: CN202111228635.3A
Authority: CN
Inventors: 杨志远; 杨金和; 吴晶晶
Original assignee: Yancheng Dachang Packaging Technology Co ltd
Current assignee: Yancheng Dachang Packaging Technology Co ltd
Priority date: 2021-10-21
Filing date: 2021-10-21
Publication date: 2021-12-21

Abstract

The invention relates to the technical field of packaging bags, in particular to a multilayer composite high-toughness aluminum foil flexible freight bag which comprises a bag body, wherein the bag body is made of at least five layers of materials through composite heat sealing, and a first polyester film layer, an aluminum foil layer, a polyethylene woven fabric layer, a second polyester film layer and a polyethylene film layer are sequentially arranged from outside to inside. According to the invention, the two layers of polyester films are added into the material of the bag body, so that the wear resistance of the bag body is integrally improved, the strength is higher, the range of adapting to materials is wider, the integral toughness and strength of the flexible freight bag are also improved, and the performance of blocking the materials is also greatly improved.

Description

Multilayer composite high-toughness aluminum foil flexible container

Technical Field

The invention relates to the technical field of packaging bags, in particular to a multilayer composite high-toughness aluminum foil flexible container.

Background

The flexible freight bag is a packaging bag for intensively packaging powdery, granular or blocky articles such as chemical materials, grains, mineral products and the like, and the flexible freight bag is used for intensively packaging the materials, so that the materials are convenient to transport, and the flexible freight bag has the effects of large capacity, convenience in loading and unloading, labor saving and improvement on production and transportation efficiency.

Present flexible container is mostly polyethylene plastic film bag of weaving on the market, and in the transportation, the bag body receives to collide with or the mar back, and the material can spill over along with the mar mouth, in the transportation, receives the material of jolting when spilling over, has the phenomenon of tearing the mar mouth, leads to the mar mouth to lengthen and strengthen, and the material spills over seriously. Therefore, the existing flexible freight bags have the conditions of poor toughness, low strength and poor barrier material.

Disclosure of Invention

The invention aims to provide a multi-layer composite high-toughness aluminum foil flexible container bag to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a compound high tenacity aluminium foil flexible container of multilayer, includes the bag body, the material of the bag body is made by five layers of material compound heat-seal at least, is first polyester film layer, aluminium foil layer, polyethylene weaved cloth layer, second polyester film layer, polyethylene film layer from outside to inside in proper order.

Preferably, the material of the bag body is made by six-layer material composite heat sealing, and is a first polyester film layer, an aluminum foil layer, a polyethylene woven cloth layer, a second polyester film layer, a nylon film layer and a polyethylene film layer from outside to inside in sequence.

Furthermore, the top of the bag body is provided with an opening, the bottom of the bag body is provided with a bottom seal, the two sides of the bag body are provided with folding surfaces, a composite strip is arranged at the included angle of one side of each folding surface, and a pull lug is arranged at one side of each folding surface close to the opening.

Furthermore, sealing strips are arranged on two sides of the bottom seal, and the sealing strips are of K-shaped structures.

Further, the bottom of the sealing strip is of an integral sealing type.

Furthermore, the bottom of the sealing strip is of a partially sealed type, sealing parts are arranged on two sides of the bottom of the sealing strip, and the sealing parts are tightly attached together through hot melting.

Further, the sealing part is any one of a circle, an ellipse, a rectangle and an arc.

Preferably, an air valve is arranged on the outer side of the bag body.

Preferably, the outer side of the first polyester film layer is coated with gloss oil.

Compared with the prior art, the invention has the beneficial effects that: the material of the bag body is made by five layers of material composite heat-seal at least, is first polyester rete, aluminium foil layer, polyethylene woven fabric layer, second polyester rete, polyethylene film layer from outside to inside in proper order, through adding two-layer polyester film in the material of the bag body, has wholly improved the wear resistance of the bag body, and intensity is higher, and the scope of adaptation material is wider, has also improved the whole toughness and the intensity of flexible container, and the performance of separation material also obtains great promotion.

Drawings

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

FIG. 2 is a schematic view of the composite structure of the bag of the present invention;

FIG. 3 is a schematic structural view of the bottom seal of the present invention;

fig. 4 is a schematic structural view of the bottom seal in a completely sealed state according to the present invention.

In the figure: 1-bag body; 11-a first polyester film layer; 12-a layer of aluminium foil; 13-polyethylene weaved cloth layer; 14-a second polyester film layer; 15-a nylon membrane layer; 16-a polyethylene film layer; 2-opening; 3-bottom sealing; 31-a sealing strip; 32-a seal; 4-folding surface; 41-composite strips; 42-pulling the lug; 5-air valve.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In embodiment 1, referring to fig. 1 and fig. 2, the present invention provides a technical solution: a multilayer composite high-toughness aluminum foil flexible freight bag comprises a bag body 1, wherein the bag body 1 is made of at least five layers of materials through composite heat sealing, and a first polyester film layer 11, an aluminum foil layer 12, a polyethylene woven fabric layer 13, a second polyester film layer 14 and a polyethylene film layer 16 are sequentially arranged from outside to inside.

The polyester film has the characteristics of high strength, wear resistance, high elasticity, low water absorption, light resistance, corrosion resistance, bleaching resistance, oxidation resistance, organic reagent resistance, inorganic acid resistance, good insulativity and the like, is suitable for being directly contacted with various materials, and has wide application range. Adopt aluminium foil layer 12 can guarantee the shaping effect of whole bag body 1, after the material of packing into, the material is filled in the inside of the bag body 1, and the capacity of accomodating the material can be increaseed to the tight real effect of formation back and acquisition. In addition, aluminum foil layer 12 also has the characteristics of good barrier properties and good heat resistance. The polyethylene knitted fabric layer 13 has the characteristic of puncture resistance, and can prevent the bag body 1 from tearing in the collision process and also prevent the tearing from expanding. The polyethylene film layer 16 has the characteristics of high heat sealing performance, high heat sealing strength, good cold resistance, moisture resistance, water resistance, good chemical resistance and the like. In addition, the five-layer composite heat-sealing structure realizes the paperless pure plastic composite bag, and is convenient to recycle.

Through adding two-layer polyester film in the material of the bag body 1, the wear resistance of the bag body 1 is integrally improved, the strength is higher, the range of adapting to materials is wider, the integral toughness and strength of the flexible freight bag are also improved, and the performance of the separation materials is also greatly improved. For the whole, the strength is twice that of the polyester film without adding the polyester film, and the weight of the materials which can be filled is twice that of the original materials for different material densities under the same capacity.

Example 2, please refer to fig. 1 and 2, the present solution further includes a nylon film layer 15, so that the material of the bag body 1 is made of six layers of materials by composite heat sealing, which enhances the barrier property. The first polyester film layer 11, the aluminum foil layer 12, the polyethylene woven fabric layer 13, the second polyester film layer 14, the nylon film layer 15 and the polyethylene film layer 16 are arranged from outside to inside in sequence. The embodiment adds the nylon membrane layer 15 on the basis of embodiment 1, and the nylon membrane layer 15 has good washability, and the melting point is high and elasticity is good, and wear-resisting and dust resistance etc. have the advantage, further strengthens the material attribute of this flexible container, has also further improved the holistic toughness and the intensity of flexible container, and the ability of separation material is also along with promoting, and the bearing effect also obtains improving, can pack into heavier material under the unit volume.

In this embodiment, because the nylon film layer 15 is added, the strength and toughness are increased compared with those of the five-layer material, so that the load-bearing capacity of the bag body 1 is improved. In addition, due to the elastic action of the nylon film layer 15, the shape recovery of the bag body 1 in a natural state is strong, and the bag body is convenient to stack and store.

Example 3 referring to fig. 1, a flexible container made of the multi-layer composite material of example 1 or example 2 is provided, wherein an opening 2 is formed at the top of the bag body 1, the material filling opening 2 is filled into the bag body 1, and a bottom seal 3 is formed at the bottom of the bag body 1, so that a sealed flexible container is formed for loading and unloading the stored material. Folding surfaces 4 are arranged on two sides of the bag body 1, the folding surfaces 4 are V-shaped, and the capacity of the bag body 1 is increased after the folding surfaces 4 are unfolded. In order to further increase the capacity for storing materials, an M type can also be adopted.

The included angle of one side of the folding surface 4 is provided with a composite strip 41, and the outer side of the composite strip 41 is flush with the included angle of the other side of the folding surface 4. The composite strips 41 fix the polyethylene film layer 16 of the inner layer together through a hot ironing technology, so that the bag body 1 has high bonding strength without an adhesive, the manufacturing cost of the bag body 1 is reduced, and the barrier resistance, the cracking resistance and the impact resistance of the bag body 1 are improved. A pull lug 42 is arranged on one side of the folding surface 4 close to the opening 2, so that the material can be conveniently loaded and unloaded, and the hand can be prevented from slipping by additionally arranging the pull lug 42 to pull and pinch the material during loading and unloading.

As a preferable scheme, please refer to fig. 3 and 4, the two sides of the bottom seal 3 are provided with sealing strips 31, the sealing strips 31 are K-shaped, and the sealing strips 31 can be formed by heat sealing with a K-shaped mold heat sealing knife in the implementation, so as to improve the falling resistance of the bag body 1 after the material is filled, and have stronger sealing performance.

Further, the bottom of the sealing strip 31 is of an integral sealing type, after the bag is filled with materials and compacted, the folding surface 4 is opened, the bottom of the bottom seal 3 is flat, the materials are integrally blocky in the bag body 1, and the packaging effect is good.

Still further, the bottom of the sealing strip 31 is of a partially sealed type, which reduces the sealing area, but still achieves the characteristic of good packaging effect. The sealing parts 32 are arranged on two sides of the bottom of the sealing strip 31, the sealing parts 32 are tightly attached together through hot melting, and the sealing parts 32 are any one of circular, oval, rectangular and arc. When implementing, can obtain the through-hole in the punching press of the sealing 32 both sides of bag body 1, then after folding face 4 coincide, two through-holes are in the same place, and the inner wall of bag body 1 laminates through this through-hole each other this moment, fuses the inboard that links to each other of bag body 1 through hot melt technique together. The inner wall of the bag body 1 is the polyethylene film layer 16, the heat sealing effect is good, compared with linear sealing, the anti-blocking capacity is strong, and the toughness and the strength are also greatly improved. In the state of the material being packed and compacted, the sealing device can be equivalent to the integral sealing of the bottom of the sealing strip 31.

Embodiment 4, referring to fig. 1, based on embodiments 1 to 3, an air valve 5 is installed on the outer side of the bag body 1, and the air valve 5 is a one-way valve, which can automatically discharge air in the bag, so that the material filled in the bag body 1 is more compact. In order to facilitate air exhaust, the air valve 5 can be arranged at the middle position of the bag body 1.

Example 5, on the basis of examples 1 and 2, the outer side of the first polyester film layer 11 is coated with the gloss oil, and the gloss oil can be the anti-skid oil and also can be the high gloss oil. The polyester layer outside scribbles the antiskid oil, increases frictional force, and is sealed after filling up bag body 1 inside as the material, when whole board is put things in good order, can prevent the material landing.

It is noted that, in this document, relational terms such as "first," "second," and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions or should not be construed as indicating or implying any relative importance. The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

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 a compound high tenacity aluminium foil flexible container of multilayer, includes bag body (1), its characterized in that: the bag body (1) is made of at least five layers of materials through composite heat sealing, and comprises a first polyester film layer (11), an aluminum foil layer (12), a polyethylene woven fabric layer (13), a second polyester film layer (14) and a polyethylene film layer (16) from outside to inside in sequence.

2. The multilayer composite high-toughness aluminum foil flexible container as claimed in claim 1, wherein: the material of the bag body (1) is made by six-layer material composite heat sealing, and comprises a first polyester film layer (11), an aluminum foil layer (12), a polyethylene woven fabric layer (13), a second polyester film layer (14), a nylon film layer (15) and a polyethylene film layer (16) from outside to inside in sequence.

3. The multilayer composite high-toughness aluminum foil flexible container as claimed in claim 2, wherein: the top of the bag body (1) is provided with an opening (2), the bottom of the bag body (1) is provided with a bottom seal (3), the two sides of the bag body (1) are provided with folding surfaces (4), a composite strip (41) is arranged at the included angle of one side of each folding surface (4), and one side of each folding surface (4) close to the opening (2) is provided with a pull lug (42).

4. The multilayer composite high-toughness aluminum foil flexible container as claimed in claim 3, wherein: and sealing strips (31) are arranged on two sides of the bottom seal (3), and the sealing strips (31) are K-shaped structures.

5. The multilayer composite high-toughness aluminum foil flexible container as claimed in claim 4, wherein: the bottom of the sealing strip (31) is of an integral sealing type.

6. The multilayer composite high-toughness aluminum foil flexible container as claimed in claim 4, wherein: the bottom of the sealing strip (31) is of a partially sealed type, sealing parts (32) are arranged on two sides of the bottom of the sealing strip (31), and the sealing parts (32) are tightly attached together through hot melting.

7. The multilayer composite high-toughness aluminum foil flexible container as recited in claim 6, wherein: the sealing part (32) is any one of circular, oval, rectangular and arc.

8. The multilayer composite high-toughness aluminum foil flexible container as claimed in claim 1, wherein: an air valve (5) is arranged on the outer side of the bag body (1).

9. The multilayer composite high-toughness aluminum foil flexible container as claimed in claim 1, wherein: the outer side of the first polyester film layer (11) is coated with gloss oil.