CN206634432U - A sealed bag with stable airtightness - Google Patents

Abstract

The utility model relates to the field of packaging, a stable sealing bag of gas tightness is provided. The technical scheme is as follows: the utility model provides a stable sealed bag of gas tightness, includes the body, characterized by: the body is formed by pressing a part of reticular plastic film (2) with grains on two surfaces and no grains on two surfaces, three side edges of the part of reticular plastic film (2) are respectively provided with a pressure sealing strip which is formed by bonding and pressing, and one side of the part of reticular plastic film is open; a sealing device which ensures that the vacuumizing state is better is arranged at the opening.

Description

A sealed bag with stable airtightness

technical field

The utility model relates to the packaging field, in particular to a sealed bag with stable airtightness.

Background technique

With the rapid development of the plastic packaging industry, various types of vacuum bags have emerged, and the requirements for plastic film materials for vacuum bags are also getting higher and higher. Plastic film materials with various textures have appeared one after another. Such materials are applied to When vacuum-packed, because its texture structure forms an air path, it is easier to pump air. Bags with self-sealing closures and one-way air valves have the added benefit of being reusable and environmentally friendly.

The textured film is thicker than the smooth surface, which causes the self-sealing seal to be thermally fused into the bag, resulting in incomplete thermal fusion, resulting in the formation of small channels for air leakage. According to the induction of production experience, the hot-melt performance of the smooth surface is better than that of the textured hot-melt, so the production process of the self-sealing film without embossing the texture is developed to prevent the airtightness of the self-sealing vacuum textured bag.

Contents of the invention

The utility model provides a sealed bag with stable airtightness, the purpose of which is to achieve better vacuum effect. The utility model is suitable for the packaging field.

The technical scheme adopted in the utility model is:

A sealed bag with stable airtightness, including a main body, characterized in that: the main body is formed by laminating partial net-like plastic films with lines on both sides and parts without lines, and the edges of the three sides of the part net-like plastic films are It is a pressure seal made by sticking and pressing, with an opening on the exposed side; a sealing device is provided at the opening to make the vacuum state better.

More preferably, a sealed bag with stable airtightness is characterized in that: the sealing device includes a sealing groove that is adhered to the inner side of a part of the mesh plastic film and seals the opening, and the part of the mesh plastic film The other side of the film is matched with a sealing strip that is stuck in the sealing slot and seals the opening. On the inner and outer sides of the sealing strip and the sealing slot, there are anti-tight seals to ensure that the package is airtight when vacuuming. Leakage strip: There is a sealing device gap between the anti-leakage strip and the sealing card strip or the sealing card groove, and a non-textured soft surface with no air seam is provided between the sealing device gaps.

Description of drawings

The utility model will be further described below in conjunction with accompanying drawing and specific embodiment:

Fig. 1 is the structural representation of existing sealed bag;

Fig. 2 is a structural representation of the utility model.

The labels in the figure show:

1-full mesh plastic film, 2-partial mesh plastic film, 22-non-grain soft surface, 3-leakage-proof air strip, 4-sealing card slot, 5-sealing card bar, 6-sealing device gap.

detailed description:

The utility model provides a sealed bag with stable airtightness, which is suitable for the packaging field. The utility model can be implemented in the following ways:

As shown in Figure 2: a sealed bag with stable airtightness, including a body, the body is formed by pressing a part of the reticulated plastic film 2 with a part of the grain on both sides and a part without a grain, and the three sides of the part of the reticulated plastic film 2 The edges are all sealed by sticking and pressing, and the exposed side is open; there is a sealing device at the opening to make the vacuum state better.

The sealing device includes a sealing groove 4 that is adhered to the inner side of a part of the mesh plastic film 2 and seals the opening. Inside and the sealing clip 5 that makes the opening airtight, the inside and outside positions of the sealing clip 5 and the sealing clip groove 4 are provided with an anti-leakage strip 3 that ensures that the package is airtight when vacuuming; There is a sealing device gap 6 between the sealing card strip 5 or the sealing card groove 4, and a non-textured soft surface 22 which is pressed and fitted without air seams is arranged between the sealing device gap 6 .

As shown in Figure 1: the structure of the existing sealing bag is similar to the structure of the sealing bag provided by the utility model, all leaving the gap 6 of the sealing device, and their main difference is:

The first, used material is different, what existing used is full net plastic film 1, what the utility model adopted is part net plastic film 2;

Second, there is a mesh structure of full mesh plastic film 1 between the gaps 6 of the sealing device of the existing sealed bag, and the suction force at the opening is not enough. The mesh structure here is deformed enough to squeeze out the air in the gap. After the packaging is completed, the air between the packaging gaps 6 reflows around the product, causing the product to be damaged; between the gaps 6 of the sealing device of the present invention is a part of the non-grained part of the mesh plastic film 2, which is marked here It is called non-textured soft surface 22. Since the structure of the non-textured soft surface is smooth and flat, when the two smooth surfaces are in contact, they only need to pump air with a small force to fit tightly without residual air, so that the sealed bag can achieve a better vacuum Effect.

Claims (2)

1. a kind of stable hermetic bag of air-tightness, including body, it is characterized in that：The body is by two sides part band line part without line Partial mesh plastic foil (2) pressing form, be the viscous press seal bar being pressed at three lateral edges of partial mesh plastic foil (2), Reveal a side opening；Being provided with opening makes to vacuumize state better seal device.

2. a kind of stable hermetic bag of air-tightness as claimed in claim 1, it is characterized in that：The sealing device includes adhesion Sealing neck (4) that is on being surveyed in a face partial mesh plastic foil (2) and sealing opening, in partial mesh plastic foil (2) Another side on supporting adhesion have and be fastened in sealing neck (4) and make the closed sealing card article (5) of opening, in sealing card article (5) and the interior outer fix of neck (4) is sealed provided with the gastight leakproof gas bar (3) of guarantee encapsulation when vacuumizing；Anti- Sealing device gap (6) is left between gas leakage bar (3) and sealing card article (5) or sealing neck (4), in sealing device gap (6) Between be provided with pressing without air cleft without the soft face of line (22).