Vacuum bag convenient for exhausting and manufacturing process

Abstract

The invention relates to a vacuum bag and a manufacturing process. The vacuum bag comprises a bag body, an air valve and a placing seal, wherein the air valve is sealed on the side part of the bag body, the inner side of the bag body is provided with an air guide groove, and the air guide groove is provided with pressing die groove grains of the bag body. The pressing die groove grains are netlike, and the pressing die groove grains are at least distributed on one bag surface of the vacuum bag. The air valve comprises an air valve seat, a sealing ball and an exhaust nozzle; a cylindrical hole is formed in the air valve seat, the diameter of an inner end hole is smaller than that of an outer hole, and the outer end of the air valve seat is provided with an exhaust nozzle mounting seat; the exhaust nozzle is sleeved on the air valve seat; and the sealing ball is placed in an air valve cavity formed by the cylindrical hole and the exhaust nozzle. The vacuum bag is made of 25 percent of polyamide (PA) material and 75 percent of polyethylene (PE) material. The production process comprises the following steps of: mixing PA and PE to manufacture a bag body film; and manufacturing the bag body, and pressing the air valve and the bag body. The air in the bag body is easily exhausted out of the bag body through the air guide groove on the inner side of the bag body so as to greatly improve the vacuum degree in the bag body.

Description

Technical field: [0001] The invention relates to the technical field of vacuum storage equipment and a manufacturing process, and more specifically relates to a vacuum bag and a manufacturing process. Background technique: [0002] Vacuum bags are also called decompression packaging. The main function of vacuum bags is to remove oxygen, so as to prevent the items inside from mildew and deterioration. Vacuum packaging bags are mostly used in the storage of food. For example, the vacuum packaging of food is the process of removing the oxygen in the packaging bag and food cells with an aspirator, so that microorganisms lose their "living environment". Vacuum bags can also prevent food from oxidizing, keeping food from tasting bad, reducing the loss of vitamins A and C from deterioration. [0003] Polyamide and polyethylene film (PE) are commonly used as vacuum packaging materials. Polyamide is commonly known as nylon (Nylon). The strength of PE material is relatively low, it ...

AI Technical Summary

Problems solved by technology

[0003] Polyamide and polyethylene film (PE) are commonly used as vacuum packaging materials. Polyamide is commonly known as nylon (Nylon). The strength of PE material is relatively low, it is also very soft, and its elasticity is very good, but its mechanical properties and scratch resistance are not good.

[0004] At present, ordinary vacuum bags can only be used in factories, and large-scale mechanical equipment is used for vacuuming, which cannot be used at home. The reason is that vacuum bags cannot be widely used in homes. In general, households can only use plastic wrap for air isolation and preservation.

In addition, ordinary vacuum bags are not tightly sealed, and the packaging bag is not sealed well when vacuuming, and it is not pressed tightly, resulting in the air being easily vacuumed after pumping, and the vacuum preservation effect will be lost.

The air cannot be fully pumped. When the vacuum bag is vacuumed, the air in the vacuum bag is difficult to be completely pumped due to the poor air conduction between the vacuum bag and the built-in. When we put food into the vacuum bag, the vacuum preservation effect is not good.

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