A corrosion-resistant and drop-resistant conductive liquid bag

Abstract

The present invention provides a corrosion-resistant and drop-resistant conductive liquid bag, the conductive liquid bag comprises an outer bag and an inner bag arranged in the outer bag, the outer bag comprises a nylon layer, an aluminum foil and a first co-extruded film layer from the outside to the inside, the inner bag comprises a high-density polyethylene layer and a second co-extruded film layer from the outside to the inside, and the first co-extruded film layer and the high-density polyethylene layer are heat-sealed to form the conductive liquid bag. The corrosion-resistant and drop-resistant conductive liquid bag of the present invention has both excellent drop resistance and excellent corrosion resistance. The conductive liquid bag is tested by a drop experiment. The original structure height is 30cm and each angle is randomly dropped 3-5 times. The bag maintains a good shape and shows outstanding mechanical properties. In the corrosion resistance test, the double bag has little change after an aging box of 50 degrees for one week. After 50 degrees for one month, there are slight bubbles in the appearance, the aging time is extended, and the corrosion resistance is improved.

Description

Technical Field

[0001] The invention relates to the technical field of packaging, and in particular to a corrosion-resistant and drop-resistant conductive liquid bag. Background Art

[0002] We know that conductive liquid is a highly corrosive industrial product. During transportation, handling and storage, it needs to be supported by excellent material properties to ensure the safety of the operator and the conductive liquid itself. The existing conductive liquid bags have poor corrosion resistance and drop resistance. Summary of the invention

[0003] In view of the shortcomings of the prior art, the present invention provides a corrosion-resistant and drop-resistant conductive liquid bag to improve the corrosion-resistant and drop-resistant performance of the conductive liquid bag. The technical solution adopted by the present invention is:

[0004] A corrosion-resistant and drop-resistant conductive liquid bag, wherein: the conductive liquid bag comprises an outer bag and an inner bag arranged in the outer bag, the outer bag comprises a nylon layer, an aluminum foil and a first co-extruded film layer from the outside to the inside, the inner bag comprises a high-density polyethylene layer and a second co-extruded film layer from the outside to the inside, and the first co-extruded film layer and the high-density polyethylene layer are heat-sealed to form the conductive liquid bag.

[0005] Preferably, in the corrosion-resistant and drop-resistant conductive liquid bag, both sides of the aluminum foil are respectively compounded with the nylon layer and the first co-extruded film layer through a first adhesive layer, and the material of the first adhesive layer is polyurethane.

[0006] Preferably, in the corrosion-resistant and drop-resistant conductive liquid bag, the first co-extruded film layer is made of nylon / low-density polyethylene, and the thickness of the first co-extruded film layer is 70-90 μm.

[0007] Preferably, in the corrosion-resistant and drop-resistant conductive liquid bag, the thickness of the nylon layer is 14 to 16 μm, and the thickness of the aluminum foil is 6 to 8 μm.

[0008] Preferably, in the corrosion-resistant and drop-resistant conductive liquid bag, the high-density polyethylene layer and the second co-extruded film layer are compounded by a second adhesive layer, and the material of the second adhesive layer is polyurethane.

[0009] Preferably, in the corrosion-resistant and drop-resistant conductive liquid bag, the thickness of the high-density polyethylene layer is 40-60 μm, the material of the second co-extruded film layer is nylon / polypropylene, and the thickness of the second co-extruded film layer is 70-90 μm.

[0010] Advantages of the present invention:

[0011] The corrosion-resistant and drop-resistant conductive liquid bag of the present invention has both excellent drop resistance and excellent corrosion resistance. In terms of drop performance testing, after the traditional single-layer composite film bag was subjected to three horizontal and vertical drop tests, the edge sealing was broken, the bag was pierced, and the impact resistance was poor. The edges were easily cracked once in the horizontal, vertical and side directions at a height of 30 cm. However, after the drop experiment test, the conductive liquid bag with a double bag structure was subjected to 3-5 drops at any angle from a height of 30 cm, and the conductive liquid bag maintained a good shape and exhibited outstanding mechanical properties. In the corrosion resistance test, the conductive liquid bag with a double bag structure exhibited excellent corrosion resistance. The traditional single-layer composite film bag was wrinkled in appearance and the inner layer was separated after being aged in an aging box at 50 degrees for one week, while the double bag changed little after being aged in an aging box at 50 degrees for one week, and there were slight bubbles in appearance after being aged at 50 degrees for one month, the aging time was greatly extended, and the corrosion resistance was improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the present invention.

[0013] Figure 2 for Figure 1 Schematic diagram of the structure of the middle and outer bags.

[0014] Figure 3 for Figure 1 Schematic diagram of the structure of the middle inner bag. DETAILED DESCRIPTION

[0015] The present invention will be further described below in conjunction with specific drawings and embodiments.

[0016] Example 1

[0017] like Figure 1-3 As shown, this embodiment provides a corrosion-resistant and drop-resistant conductive liquid bag, wherein: the conductive liquid bag includes an outer bag 1 and an inner bag 2 arranged in the outer bag 1, the outer bag 1 includes a nylon layer 11, an aluminum foil 12 and a first co-extruded film layer 13 from the outside to the inside, and the inner bag 2 includes a high-density polyethylene layer 21 and a second co-extruded film layer 23 from the outside to the inside, and the first co-extruded film layer 13 and the high-density polyethylene layer 21 are heat-sealed to form a conductive liquid bag.

[0018] Wherein: the two sides of the aluminum foil 12 are respectively compounded with the nylon layer 11 and the first co-extruded film layer 13 through the first adhesive layer 14, and the material of the first adhesive layer 14 is polyurethane.

[0019] Wherein: the material of the first co-extruded film layer 13 is nylon / low-density polyethylene, and the thickness of the first co-extruded film layer 13 is 70-90 μm.

[0020] Wherein: the thickness of the nylon layer 11 is 14-16 μm, and the thickness of the aluminum foil 12 is 6-8 μm.

[0021] Wherein: the high-density polyethylene layer 21 and the second co-extruded film layer 23 are compounded by a second adhesive layer 22, and the material of the second adhesive layer 22 is polyurethane.

[0022] Wherein: the thickness of the high-density polyethylene layer 21 is 40-60 μm, the material of the second co-extruded film layer 23 is nylon / polypropylene, and the thickness of the second co-extruded film layer 23 is 70-90 μm.

[0023] The conductive liquid bag of the present invention adopts a double bag structure. The outer bag is a composite film of a three-layer structure, in which a nylon layer 11 and an aluminum foil 12 are compounded together by a polyurethane adhesive UK3640, and the aluminum foil 12 is combined with a first co-extruded film layer 13 by a polyurethane adhesive UK3640, so that the outer bag forms a composite film with excellent barrier properties and good impact resistance; and the inner bag is a composite film of a two-layer structure, in which a high-density polyethylene layer 21 with heat sealability and a second co-extruded film layer are combined by a polyurethane adhesive, and the high-density polyethylene has a high crystallinity, so that It has better acid and alkali resistance, aging resistance, corrosion resistance and impermeability, so the inner bag plays a good protective role on the conductive liquid, preventing it from penetrating through the material. The composite semi-finished product is again heat-sealed through the bag-making process to form a double bag by the first co-extruded film layer 13 of the outer bag and the high-density polyethylene layer 21 of the inner bag. The sealing position of the bag adopts a point-heating method, which helps to discharge the air between the inner bag and the outer bag when the conductive liquid is sealed, thereby ensuring the flatness of the bag. Because the manufactured bag is combined by the inner bag and the outer bag, it has better anti-fall and corrosion resistance.

[0024] The corrosion-resistant and drop-resistant conductive liquid bag of the present invention has both excellent drop resistance and excellent corrosion resistance. In terms of drop performance testing, after the traditional single-layer composite film bag was subjected to three horizontal and vertical drop tests, the edge sealing was broken, the bag was pierced, and the impact resistance was poor. The edges were easily cracked once in the horizontal, vertical and side directions at a height of 30 cm. However, after the drop experiment test, the conductive liquid bag with a double bag structure was subjected to 3-5 drops at any angle from a height of 30 cm, and the conductive liquid bag maintained a good shape and exhibited outstanding mechanical properties. In the corrosion resistance test, the conductive liquid bag with a double bag structure exhibited excellent corrosion resistance. The traditional single-layer composite film bag was wrinkled in appearance and the inner layer was separated after being aged in an aging box at 50 degrees for one week, while the double bag changed little after being aged in an aging box at 50 degrees for one week, and there were slight bubbles in appearance after being aged at 50 degrees for one month, the aging time was greatly extended, and the corrosion resistance was improved.

[0025] Finally, it should be noted that the above specific implementation methods are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to examples, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A corrosion-resistant and drop-resistant conductive liquid bag, characterized in that: The conductive liquid bag comprises an outer bag (1) and an inner bag (2) arranged in the outer bag (1), wherein the outer bag (1) comprises, from the outside to the inside, a nylon layer (11), an aluminum foil (12) and a first co-extruded film layer (13), and the inner bag (2) comprises, from the outside to the inside, a high-density polyethylene layer (21) and a second co-extruded film layer (23), and the first co-extruded film layer (13) and the high-density polyethylene layer (21) are heat-sealed to form the conductive liquid bag; the sealing position of the conductive liquid bag is achieved by a spot-heating method; The two sides of the aluminum foil (12) are respectively compounded with the nylon layer (11) and the first co-extruded film layer (13) via a first adhesive layer (14), and the material of the first adhesive layer (14) is polyurethane; The high-density polyethylene layer (21) and the second co-extruded film layer (23) are compounded via a second adhesive layer (22), and the material of the second adhesive layer (22) is polyurethane; The material of the first co-extruded film layer (13) is nylon / low-density polyethylene, and the material of the second co-extruded film layer (23) is nylon / polypropylene.

2. The corrosion-resistant and drop-resistant conductive liquid bag according to claim 1, characterized in that: The thickness of the first co-extruded film layer (13) is 70 to 90 μm.

3. The corrosion-resistant and drop-resistant conductive liquid bag according to claim 1, characterized in that: The thickness of the nylon layer (11) is 14 to 16 μm, and the thickness of the aluminum foil (12) is 6 to 8 μm.

4. The corrosion-resistant and drop-resistant conductive liquid bag according to claim 1, characterized in that: The thickness of the high-density polyethylene layer (21) is 40 to 60 μm, and the thickness of the second co-extruded film layer (23) is 70 to 90 μm.

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