Sealing bag and manufacturing method and device thereof

Abstract

The invention relates to a sealing bag. A bag opening of the sealing bag is provided with a Velcro strap which is composed of a hook face strap and a suede face strap, and base layers of the hook face strap and the suede face strap and the surface of the inner side of the bag opening of a bag body are adhered into a whole through hot melting. Simultaneously, the invention also provides a manufacturing method and device of the sealing bag. The manufacturing device comprises a melting connection device and an edge sealing device, the melting connection device comprises two parallel annular conveying belts and an electric heater, the two annular conveying belts are used for clamping thin membranes, the electric heater is used for heating opposite conveying belt surfaces of the two annular conveying belts, and portions which are heated by the electric heater are located on the central line of the two conveying belts and are opposite to each other all the time. The sealing bag has the advantages that the bag opening of the sealing bag is sealed through arrangement of the Velcro strap, and by the aid of the design, the defects that existing sealing bags are difficult to open and close, difficult to seal again and short in service life can be eliminated. The sealing bag is simple in structure, convenient and practical. The device and the method for manufacturing the sealing bag have the advantages that technical schemes are simple and easy to implement and broad market prospects are provided.

Description

technical field [0001] The invention relates to the technical field of sealed bags, in particular to a sealed bag and its manufacturing method and manufacturing equipment. Background technique [0002] The structure of the existing sealed bag is that it is open on one side, and the other three sides are closed, and by setting the snapper ( Sealing bone belt), the two cooperate so that the sealed bag is sealed and can be opened and closed freely. In this kind of sealed bag, the sealing bone belt is the key part to realize the sealing, and it is usually molded by plastic processing. Because the sealed bag is easy to use and low in cost, it is widely used in many fields such as food, medicine, daily necessities and other miscellaneous goods. [0003] But this sealed bag has the following disadvantages in actual use: [0004] 1. Difficulty opening and closing [0005] Since both the convex bone band and the concave bone band are soft and long strips, when the sealing bone ba...

AI Technical Summary

Problems solved by technology

[0004] 1. Difficulty opening and closing

[0005] Since both the convex bone band and the concave bone band are soft and long strips, when the sealing bone band at the mouth of the pocket is pressed with fingers, it must be precisely aligned before the occlusal can be successfully occluded, so a certain section of the sealing bone is often caused. The band is not fully sealed to form a gap

This forces the user to re-examine the tightness of the pocket opening, and even open the pocket opening and press the closure again. If there is any carelessness, it must be repeated again

[0006] In addition, the sealing bone belt needs to exert a certain pressure when opening and closing, so not only is it extremely time-consuming and laborious to seal, but also the bag mouth is easily damaged when it is opened.

[0007] 2. Vulnerable

Therefore, the life of this sealed bag is extremely short

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