Impact-resistant standing pouch

Abstract

The utility model discloses an impact-resistant self-standing pouch which comprises a plurality of pouch pieces, the pouch pieces are matched together to form a pouch body, each pouch piece comprises a polyethylene film layer, a glue layer and a polyester film layer, the polyester film layer and the polyethylene film layer are arranged on the two sides of the glue layer respectively, the thickness of the polyethylene film layer is 80 micrometers, the thickness of the polyester film layer is 25 micrometers, and the thickness of the glue layer is 20 micrometers. The thickness of the glue layer is 2 microns, the polyethylene film layer is located in the bag body, and the polyester film layer is located outside the bag body. The self-standing bag has the following beneficial effects that the bag sheet is prepared by compounding the polyester film layer with the thickness of 25 microns and the polyethylene film layer with the thickness of 80 microns, so that the probability that the self-standing bag is broken due to impact of foreign objects or falling from a high place at low temperature is reduced.

Description

Technical Field

[0001] The utility model relates to the field of packaging materials, in particular to an impact-resistant stand-up bag. Background Art

[0002] At present, many materials are packaged in transparent self-supporting bags. At present, transparent self-supporting bags are generally made of composite films, and the composite films are composited by 12um thick polyester film and 90um thick polypropylene film. There is a problem in the use of the self-supporting bags made of this composite film, that is, when the self-supporting bags of this structure are kept in a low temperature environment (temperature below minus 18°C) for a long time, once the self-supporting bags are impacted by foreign objects or dropped from a height, the entire self-supporting bags are very likely to break. Utility Model Content

[0003] Aiming at the above problems, the utility model provides an impact-resistant stand-up bag.

[0004] The technical solution adopted by the utility model is as follows:

[0005] A shock-resistant self-supporting bag comprises a plurality of bag sheets, which are combined together to form a bag body. The bag sheets comprise a polyethylene film layer, a glue layer and a polyester film layer. The polyester film layer and the polyethylene film layer are respectively arranged on both sides of the glue layer. The thickness of the polyethylene film layer is 80 um, the thickness of the polyester film layer is 25 um, the thickness of the glue layer is 2 um, the polyethylene film layer is located outside the bag body, and the polyester film layer is located outside the bag body.

[0006] This kind of self-supporting bag is made of several bag sheets by heat-sealing and bonding. The bag sheet is made of a polyethylene film layer, a glue layer and a polyester film layer. The polyethylene film layer is located in the bag body, and the polyester film layer is located in the bag body. The glue layer is used to composite the polyethylene film layer and the polyester film layer. Because the polypropylene film is easy to break at low temperatures, the polyethylene film layer and the polyester film layer are used in this kind of bag sheet to reduce the probability of the self-supporting bag being broken due to external impact or falling from a height at low temperatures. At the same time, because the stiffness of the polyethylene film layer is worse than that of the polypropylene film at the same thickness, the thickness of the polyester film layer is increased in the bag sheet of this kind of self-supporting bag, while the thickness of the polyethylene film layer is reduced. The stiffness of the entire self-supporting bag is improved by increasing the thickness of the polyester film layer.

[0007] In summary, the bag sheet in this kind of self-supporting bag is prepared by compounding a 25um thick polyester film layer and an 80um thick polyethylene film layer, which reduces the probability of the entire self-supporting bag being broken by the impact of foreign objects at low temperatures.

[0008] Optionally, the bag sheet further includes an ink printing layer, wherein the ink printing layer is arranged between the polyester film layer and the glue layer, and the thickness of the ink printing layer is 3 um.

[0009] The ink printing layer is used to print information.

[0010] Optionally, the glue layer is a polyurethane glue layer.

[0011] The utility model has the beneficial effect that the bag sheet is prepared by compounding a 25um thick polyester film layer and an 80um thick polyethylene film layer, thereby reducing the probability of the entire self-supporting bag being broken by impact at low temperatures. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the bag piece;

[0013] Figure 2 It is a schematic diagram of the structure of a stand-up bag.

[0014] The reference numerals in the figure are: 1, bag sheet; 101, polyester film layer; 102, ink printing layer; 103, glue layer; 104, polyethylene film layer; 2, sealing strip. DETAILED DESCRIPTION

[0015] The utility model is described in detail below in conjunction with the accompanying drawings.

[0016] As attached Figure 2 As shown, an impact-resistant self-supporting bag comprises a plurality of bag sheets 1 (the structure of the bag sheets 1 is shown in the attached Figure 1 As shown), the bag pieces 1 are combined together to form a bag body, and the bag piece 1 includes a polyethylene film layer 104, a glue layer 103 and a polyester film layer 101. The polyester film layer 101 and the polyethylene film layer 104 are respectively arranged on both sides of the glue layer 103. The thickness of the polyethylene film layer 104 is 80um, the thickness of the polyester film layer 101 is 25um, and the thickness of the glue layer 103 is 2um. The polyethylene film layer 104 is located outside the bag body, and the polyester film layer 101 is located outside the bag body.

[0017] This kind of self-supporting bag is prepared by heat-sealing several bag sheets 1. The bag sheet 1 is prepared by compounding a polyethylene film layer 104, a glue layer 103 and a polyester film layer 101. The polyethylene film layer 104 is located in the bag body, and the polyester film layer 101 is located in the bag body. The glue layer 103 is used to compound the polyethylene film layer 104 and the polyester film layer 101. Since the polypropylene film is easy to break at low temperatures, the polyethylene film layer 104 and the polyester film layer 101 are compounded in this kind of bag sheet 1, which reduces the probability of the self-supporting bag being broken due to external impact or falling from a height at low temperatures. At the same time, since the stiffness of the polyethylene film layer 104 is worse than that of the polypropylene film at the same thickness, the thickness of the polyester film layer 101 is increased in the bag sheet 1 of this kind of self-supporting bag, while the thickness of the polyethylene film layer 104 is reduced, and the stiffness of the entire self-supporting bag is improved by increasing the thickness of the polyester film layer 101.

[0018] See attached Figure 2 As shown in FIG. 1 , a sealing strip 2 is provided at the bag opening of the bag body in this kind of self-supporting bag. Figure 2 What is shown in the figure is sealing with a sealing strip, and other forms of sealing can also be used in other equivalent embodiments.

[0019] In summary, the bag sheet 1 in the self-supporting bag is prepared by compounding a 25 um thick polyester film layer 101 and an 80 um thick polyethylene film layer 104, which reduces the probability of the entire self-supporting bag being broken by impact at low temperatures.

[0020] As attached Figure 1 As shown, the bag sheet 1 further includes an ink printing layer 102 , which is disposed between the polyester film layer 101 and the glue layer 103 , and the thickness of the ink printing layer 102 is 3 um.

[0021] The ink printing layer 102 is used to print information.

[0022] As attached Figure 1 As shown, the glue layer 103 is a polyurethane glue layer 103 .

[0023] The above description is only a preferred embodiment of the present invention, and does not limit the patent protection scope of the present invention. Any equivalent transformations made using the contents of the present invention specification, directly or indirectly used in other related technical fields, are also included in the protection scope of the present invention.

Claims

1. An impact-resistant self-supporting bag, comprising a plurality of bag sheets, wherein the bag sheets are combined together to form a bag body, characterized in that: The bag sheet includes a polyethylene film layer, a glue layer and a polyester film layer, the polyester film layer and the polyethylene film layer are respectively arranged on both sides of the glue layer, the thickness of the polyethylene film layer is 80um, the thickness of the polyester film layer is 25um, the thickness of the glue layer is 2um, the polyethylene film layer is located outside the bag body, and the polyester film layer is located outside the bag body.

2. The impact-resistant stand-up bag according to claim 1, characterized in that: The bag sheet further includes an ink printing layer, which is arranged between the polyester film layer and the glue layer, and the thickness of the ink printing layer is 3 um.

3. The impact-resistant stand-up bag according to claim 1, characterized in that: The glue layer is a polyurethane glue layer.

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