Unidirectional air guide packaging bag

Abstract

The one-way air guide packaging bag comprises bag pieces, part of wall faces of the bag pieces are bonded together to form a bag body, a bag opening is formed in the bag body, a one-way air guide valve is arranged on the bag body, the one-way air guide packaging bag further comprises a zipper, the zipper is arranged in the bag body and located at the bag opening, and an easy-to-tear fracture line is arranged on the bag body. The easy-to-tear fracture line is a linear easy-to-tear fracture line, the easy-to-tear fracture line is parallel to the zipper, the zipper is located between the bottom of the bag body and the easy-to-tear fracture line, and the one-way air guide valve is located between the easy-to-tear fracture line and the bottom of the bag body. The packaging bag has the advantages that the packaging bag can be sealed again through the zipper when the packaging bag needs to be used again after being broken, and the packaging bag can be used again after being sealed through the zipper.

Description

Technical Field

[0001] The utility model relates to the field of electronic product accessories, in particular to a one-way air-conducting packaging bag. Background Art

[0002] Air-conducting packaging bags are a type of packaging bag commonly used at present. Patent announcement document CN204280212U discloses an air-conducting packaging bag. In the packaging bag with this structure, a one-way air-conducting valve is arranged on the wall of the bag body to achieve one-way air-conducting from the inside of the bag to the outside of the bag. Since this bag is a heat-sealed bag, that is, this bag needs to be sealed by heat sealing or other forms after the items are placed in it, and the bag needs to be opened when the items in the bag are taken out again. Since the bag mouth of this bag does not contain other sealing structures, the bag of this structure cannot be used again once it is opened. Utility Model Content

[0003] In view of the above problems, the utility model proposes a one-way air guide packaging bag. In this packaging bag, a straight tear line is provided at the bag opening of the bag body. After the bag opening of the bag body is sealed by heat sealing or other forms, the seal can be directly torn open through the tear line, thereby opening the bag opening. After the bag opening is opened, the zipper will not be damaged. The zipper can be used to seal the bag later, so that the bag can still be recycled after being broken.

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

[0005] A one-way air-conducting packaging bag comprises a bag sheet, parts of the wall surfaces of the bag sheet are bonded together to form a bag body, the bag body is provided with a bag opening, the bag body is provided with a one-way air-conducting valve, and also comprises a zipper, the zipper is provided in the bag body, and the zipper is located at the bag opening, the bag body is provided with an easy-tear fracture line, the easy-tear fracture line is a straight-line easy-tear fracture line, the easy-tear fracture line is parallel to the zipper, the zipper is located between the bottom of the bag body and the easy-tear fracture line, and the one-way air-conducting valve is located between the easy-tear fracture line and the bottom of the bag body.

[0006] The method of using this packaging bag is as follows. First, put the items to be packaged into the bag body, and then close the zipper. The zipper plays a preliminary role in sealing the bag mouth, and then the bag mouth is sealed by heat sealing. After the bag mouth is closed, a heat seal strip is formed. The heat seal strip is parallel to the easy-tear fracture line. When it is necessary to open and dismantle the bag, it only needs to be torn along the easy-tear fracture line to complete the dismantling of the bag. After the dismantling is completed, when it needs to be used again, it can be sealed again with the help of the zipper (but the sealing strength of the zipper sealing is relatively low). After the zipper sealing is completed, it can be used again.

[0007] In this packaging bag, since the easy tearing line is a straight easy tearing line, the tendency of the tearing edge to twist along the straight easy tearing line can be avoided.

[0008] In this packaging bag, the one-way air guide valve can make the gas flow from the bag body to the bag body in one direction, so that when this packaging bag is used to package fruits, the fruit aroma can flow from the bag body to the bag body in one direction.

[0009] Optionally, the bag sheet includes a PET film, an aluminum foil, a nylon film and an unstretched polypropylene film, the PET film and the nylon film are arranged on both sides of the aluminum foil, and the unstretched polypropylene film and the aluminum foil are located on both sides of the nylon film.

[0010] The specific bag piece is composited by PET film, aluminum foil, nylon film and unstretched polypropylene film. When the bag body is made, the PET film is located on the outer wall of the bag body, and the unstretched polypropylene film is located on the inner wall of the bag body, and some of the unstretched polypropylene films are bonded together.

[0011] Specifically in this packaging bag, the unstretched polypropylene film adopts a cooking grade unstretched polypropylene film.

[0012] Optionally, the thickness of the PET film is 12 um.

[0013] Optionally, the thickness of the aluminum foil is 7 um.

[0014] Optionally, the thickness of the nylon membrane is 15 um.

[0015] Optionally, the thickness of the unstretched polypropylene film is 70 um.

[0016] The utility model has the beneficial effect that after the demolition is completed, when it needs to be used again, it can be sealed again with the help of a zipper, and after the zipper sealing is completed, it can be used again. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of a one-way air guide packaging bag;

[0018] Figure 2 It is a schematic diagram of the position of the easy tearing fracture line on the bag body;

[0019] Figure 3 It is a schematic diagram of the structure of the bag.

[0020] The reference numerals in the figure are: 1, bag piece; 2, zipper; 3, easy tearing line; 4, one-way air guide valve; 101, PET film; 102, aluminum foil; 103, nylon film; 104, unstretched polypropylene film. DETAILED DESCRIPTION

[0021] The utility model is described in detail below in conjunction with the accompanying drawings.

[0022] As attached Figure 1 And attached Figure 2 As shown, a one-way air guide packaging bag includes a bag sheet 1 (the structure of the bag sheet 1 can be seen in the attached Figure 3 As shown in the figure, part of the wall surface of the bag sheet 1 is bonded together to form a bag body, the bag body is provided with a bag opening, a one-way air guide valve 4 is arranged on the bag body, and also includes a zipper 2, the zipper 2 is arranged in the bag body, and the zipper 2 is located at the bag opening, an easy tearing fracture line 3 is opened on the bag body, the easy tearing fracture line 3 is a straight easy tearing fracture line 3, the easy tearing fracture line 3 is parallel to the zipper 2, the zipper 2 is located between the bottom of the bag body and the easy tearing fracture line 3, and the one-way air guide valve 4 is located between the easy tearing fracture line 3 and the bottom of the bag body.

[0023] The method of using the packaging bag is as follows. First, put the items to be packaged into the bag body, and then close the zipper 2. The zipper 2 plays a preliminary sealing role on the bag opening of the bag body, and then the bag opening is sealed by heat sealing. After the bag opening is closed, a heat sealing strip is formed. The heat sealing strip is parallel to the easy-tear fracture line 3. When it is necessary to open and dismantle the bag, it is only necessary to tear it along the easy-tear fracture line 3 to complete the dismantling of the bag. After the dismantling is completed, when it needs to be used again, the zipper 2 can be used to seal it again (but the sealing strength of the zipper 2 is relatively low). After the zipper 2 is sealed, it can be used again.

[0024] In this packaging bag, since the easy-tear fracture line 3 is a straight-line easy-tear fracture line 3 , the tendency of the tearing edge to twist along the straight-line easy-tear fracture line 3 can be avoided.

[0025] In this packaging bag, the one-way air guide valve 4 can make the gas flow from the bag body to the bag body in one direction, so that when this packaging bag is used to package fruits, the fruit aroma can flow from the bag body to the bag body in one direction.

[0026] As attached Figure 1 , Attachment Figure 2 And attached Figure 3 As shown, the bag sheet 1 includes a PET film 101 , an aluminum foil 102 , a nylon film 103 and an unstretched polypropylene film 104 . The PET film 101 and the nylon film 103 are arranged on both sides of the aluminum foil 102 , and the unstretched polypropylene film 104 and the aluminum foil 102 are located on both sides of the nylon film 103 .

[0027] The specific bag sheet 1 is composed of a composite of a PET film 101, an aluminum foil 102, a nylon film 103 and an unstretched polypropylene film 104. When the bag body is made, the PET film 101 is located on the outer wall of the bag body, and the unstretched polypropylene film 104 is located on the inner wall of the bag body, and parts of the unstretched polypropylene film 104 are bonded together.

[0028] Specifically, in this packaging bag, the unstretched polypropylene film 104 is a cooking grade unstretched polypropylene film 104 .

[0029] As attached Figure 1 , Attachment Figure 2 And attached Figure 3 As shown, the thickness of the PET film 101 is 12 um.

[0030] As attached Figure 1 , Attachment Figure 2 And attached Figure 3 As shown, the thickness of the aluminum foil 102 is 7 um.

[0031] As attached Figure 1 , Attachment Figure 2 And attached Figure 3 As shown, the thickness of the nylon membrane 103 is 15 um.

[0032] As attached Figure 1 , Attachment Figure 2 And attached Figure 3 As shown, the thickness of the unstretched polypropylene film 104 is 70 um.

[0033] The structure of the bag sheet used in this packaging bag is as follows Figure 3 As shown in the figure, the bag sheet is compounded with PET film, aluminum foil, nylon film and unstretched polypropylene film. Since the PET film, aluminum foil and nylon film all have good hardness, the entire bag sheet has good hardness, and the prepared packaging bag has good stiffness.

[0034] 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. A one-way air guide packaging bag, comprising a bag sheet, wherein part of the wall surface of the bag sheet is bonded together to form a bag body, the bag body is provided with a bag opening, and a one-way air guide valve is provided on the bag body, characterized in that: The bag also includes a zipper, which is arranged in the bag body and located at the bag opening. The bag body is provided with an easy-tear fracture line, which is a straight-line easy-tear fracture line and is parallel to the zipper. The zipper is located between the bottom of the bag body and the easy-tear fracture line, and the one-way air guide valve is located between the easy-tear fracture line and the bottom of the bag body.

2. The one-way air guide packaging bag according to claim 1, characterized in that: The bag sheet comprises a PET film, an aluminum foil, a nylon film and an unstretched polypropylene film, wherein the PET film and the nylon film are arranged on both sides of the aluminum foil, and the unstretched polypropylene film and the aluminum foil are located on both sides of the nylon film.

3. The one-way air guide packaging bag according to claim 2, characterized in that: The thickness of the PET film is 12 um.

4. The one-way air guide packaging bag according to claim 2, characterized in that: The thickness of the aluminum foil is 7 um.

5. The one-way air guide packaging bag according to claim 2, characterized in that: The thickness of the nylon membrane is 15 um.

6. The one-way air guide packaging bag according to claim 2, characterized in that: The thickness of the unstretched polypropylene film is 70 um.

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