Oil-resistant anti-freezing packaging bag

Abstract

The utility model discloses an oil-resistant anti-freezing packaging bag which comprises a bag body. The bag body is provided with a containing cavity with an upward opening; the bag body comprises an oil-resistant layer, a waterproof layer, an anti-stretching layer, an anti-piercing layer and an anti-freezing heat-insulating layer; the inner surface of the oil-resistant layer forms the accommodating cavity, the waterproof layer is compounded on the outer surface of the oil-resistant layer, the tensile layer is compounded on the outer surface of the waterproof layer, the anti-puncture layer is compounded on the outer surface of the tensile layer, and the anti-freezing heat-insulating layer is compounded on the outer surface of the anti-puncture layer. The bag body is designed to comprise the oil-resistant layer, the waterproof layer, the stretch-resistant layer, the puncture-resistant layer and the anti-freezing and heat-insulating layer, so that the product simultaneously has the characteristics of oil resistance, water resistance, stretch resistance, puncture resistance, freezing resistance and heat insulation, can bear larger weight, is not easy to crack due to frost, can well protect articles, is more durable and longer in service life, and is suitable for popularization and application. The popularization and use are worthy.

Description

Technical Field

[0001] The utility model relates to the field of packaging bags, in particular to an oil-resistant and antifreeze packaging bag. Background Art

[0002] Packaging bags are bags used to package various items, facilitating transportation and storage during the production and distribution process. They are widely used in daily life and industrial production. The commodity nature of packaging itself is becoming increasingly prominent, becoming a specialized product no longer dependent on commodity production, but a widely used product that is indispensable to all commodities. Commonly used plastic packaging bags are mostly made of polyethylene film, which is non-toxic. Another type of film is made of polyvinyl chloride (PVC). PVC itself is also non-toxic, but the additives added to the film depending on its intended use often contain substances that are harmful to the human body and have a certain degree of toxicity. By the end of 2025, the use of non-degradable plastic packaging bags, plastic tape, and disposable plastic woven bags will be banned nationwide in postal and express delivery outlets. Plastic packaging bags can be categorized by material, including OPP, CPP, PP, PE, PVA, EVA, composite bags, and co-extruded bags.

[0003] Current packaging bags primarily consist of a bag body and a handle. The bag body has an upward-opening container for containing items, and the handle is located at the top of the bag body. However, the bag body of existing packaging bags is generally constructed of a single-layer plastic material, which has relatively weak oil resistance, antifreeze, waterproofness, stretch resistance, and puncture resistance. This makes them less durable, has a short service life, and fails to provide adequate protection for items. Therefore, improvements are needed to improve current packaging bags. Utility Model Content

[0004] In view of this, the present invention aims to address the deficiencies in the prior art, and its main purpose is to provide an oil-resistant and antifreeze packaging bag, which can effectively solve the problem that the existing packaging bags have relatively weak oil resistance, antifreeze, waterproof, tensile strength and puncture resistance.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] An oil-resistant and antifreeze packaging bag comprises a bag body; the bag body has a accommodating cavity with an upward opening; the bag body comprises an oil-resistant layer, a waterproof layer, an anti-stretching layer, an anti-puncture layer and an antifreeze and heat-insulating layer; the inner surface of the oil-resistant layer constitutes the aforementioned accommodating cavity, the waterproof layer is compounded on the outer surface of the oil-resistant layer, the anti-stretching layer is compounded on the outer surface of the waterproof layer, the anti-puncture layer is compounded on the outer surface of the anti-stretching layer, and the antifreeze and heat-insulating layer is compounded on the outer surface of the puncture-resistant layer.

[0007] As a preferred solution, the oil-resistant layer is made of TPU material and has a thickness of 25-30 μm.

[0008] As a preferred solution, the waterproof layer is a BOPP / VMCPP double-layer composite structure, and the thickness is 15-25 microns.

[0009] As a preferred solution, the anti-stretching layer is high-density polyethylene, polypropylene, linear low-density polyethylene or nylon or polyester, and the thickness is 15-20 microns.

[0010] As a preferred solution, the anti-puncture layer is polyvinylidene chloride, co-extruded polyethylene or ethylene-vinyl alcohol copolymer, and the thickness is 15-20 microns, and the anti-puncture effect is good, and the articles stored in the accommodating cavity are better protected.

[0011] As a preferred solution, the anti-freezing and heat insulation layer comprises a glass fiber layer and an ethylene-tetrafluoroethylene copolymer composite on the glass fiber layer, the thickness of the anti-freezing and heat insulation layer is 35-45 microns, the glass fiber layer has a good heat insulation effect, the ethylene-tetrafluoroethylene copolymer has a strong tear resistance, the material has a wide temperature range, and the brittle temperature is as low as -100 DEG C, and the anti-freezing effect is good.

[0012] As a preferred solution, the first sealing rubber strip is fixedly connected to one side of the top of the bag body by hot melting, the second sealing rubber strip is fixedly connected to the other side of the top of the bag body by hot melting, and the second sealing rubber strip is detachably sealed with the first sealing rubber strip to seal the opening of the accommodating cavity, so that the bag body is resealed after being opened.

[0013] As a preferred solution, the inner side of the first sealing rubber strip is concavely provided with a dovetail groove, the inner side of the second sealing rubber strip is convexly provided with a dovetail block, and the dovetail block is clamped and sealed with the dovetail groove, so that the structure is simple, the disassembly and assembly are convenient, and the connection is stable.

[0014] As a preferred solution, the top of the first sealing rubber strip is hot-melt connected with a first handle, the first handle is provided with a first handle hole, the top of the second sealing rubber strip is hot-melt connected with a second handle, the second handle is opposite to the first handle, and the second handle is provided with a second handle hole, so that the bag is convenient to carry.

[0015] As a preferred solution, the bottom of the bag body is provided with an air nozzle, the air nozzle is communicated with the accommodating cavity, and a one-way valve is arranged on the air nozzle to enable the outside to be communicated with the accommodating cavity in one way, so that the bag body is inflated and expanded by inflating gas into the accommodating cavity through the air nozzle, the articles in the accommodating cavity are convenient to take out, and specific gas can be injected into the accommodating cavity to meet the needs of article transportation or preservation.

[0016] Compared with the prior art, the utility model has obvious advantages and beneficial effects, and specifically speaking, the above technical solution can know that:

[0017] The bag body is designed to comprise an oil-resistant layer, a waterproof layer, a tensile-resistant layer, a puncture-resistant layer and a freeze-proof heat insulation layer, so that the product has good oil resistance, water resistance, tensile resistance, puncture resistance and freeze-proof heat insulation, can bear greater weight, is not prone to freeze cracking, can well protect the articles, is more durable, has a longer service life and is worth promoting.

[0018] In order to make the structure characteristics and functions of the utility model more clear, the utility model will be described in detail below by combining with the drawings and specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0019] Fig. 1 is the front view of the preferred embodiment of the utility model;

[0020] Fig. 2 is the sectional view of the preferred embodiment of the utility model.

[0021] BRIEF DESCRIPTION OF DRAWINGS

[0022] 10, bag body 11, oil-resistant layer

[0023] 12, waterproof layer 13, tensile-resistant layer

[0024] 14, puncture-resistant layer 15, freeze-proof heat insulation layer

[0025] 151, glass fiber layer 152, ethylene-tetrafluoroethylene copolymer

[0026] 101, accommodating cavity 20, first sealing rubber strip

[0027] 21, dovetail groove 30, second sealing rubber strip

[0028] 31, dovetail block 40, first handle

[0029] 41, first handle hole 50, second handle

[0030] 51, second handle hole 60, easy-to-tear film

[0031] 71, air nozzle 72, one-way valve. DETAILED DESCRIPTION

[0032] Please refer to Figs. 1-2 , which shows the specific structure of the preferred embodiment of the utility model, comprising a bag body 10.

[0033] The bag body 10 has an accommodating cavity 101 with an opening facing upward. Specifically, the bag body 10 comprises an oil-resistant layer 11, a waterproof layer 12, a stretch-resistant layer 13, a puncture-resistant layer 14, and a freeze-proof and heat-insulating layer 15. The inner surface of the oil-resistant layer 11 constitutes the aforementioned accommodating cavity 101. The waterproof layer 12 is compounded on the outer surface of the oil-resistant layer 11. The stretch-resistant layer 13 is compounded on the outer surface of the waterproof layer 12. The puncture-resistant layer 14 is compounded on the outer surface of the stretch-resistant layer 13. The freeze-proof and heat-insulating layer 15 is compounded on the outer surface of the puncture-resistant layer 14.

[0034] In the present embodiment, the oil-resistant layer 11 is made of TPU material and has a thickness of 25-30 μm. The oil-resistant layer 11 has good oil-resistant effect, anti-aging, and long service life. The waterproof layer 12 has a BOPP / VMCPP double-layer composite structure and has a thickness of 15-25 μm. The waterproof layer 12 has the characteristics of moisture-proof, oil-resistant, oxygen-proof, light-proof, etc. The stretch-resistant layer 13 is made of high-density polyethylene, polypropylene, linear low-density polyethylene, or nylon or polyester and has a thickness of 15-20 μm. The stretch-resistant layer 13 has good stretch-resistant characteristics. The puncture-resistant layer 14 is made of polyvinylidene chloride, co-extruded polyethylene, or ethylene-vinyl alcohol copolymer and has a thickness of 15-20 μm. The puncture-resistant layer 14 has good puncture-resistant characteristics and can better protect the articles in the accommodating cavity 101. The freeze-proof and heat-insulating layer 15 comprises a glass fiber layer 151 and an ethylene-tetrafluoroethylene copolymer 152 compounded on the glass fiber layer 151. The freeze-proof and heat-insulating layer 15 has a thickness of 35-45 μm. The glass fiber layer 151 has good heat-insulating and heat-preserving effect. The ethylene-tetrafluoroethylene copolymer 152 has strong tear resistance. The material has a wide temperature range of use and has a brittle temperature as low as -100 °C. The freeze-proof and heat-insulating layer 15 has good freeze-proof effect.

[0035] Further, a first sealing rubber strip 20 is fixedly connected to the top of one side of the bag body 10 by hot melting. A second sealing rubber strip 30 is fixedly connected to the top of the other side of the bag body 10 by hot melting. The second sealing rubber strip 30 is detachably sealed with the first sealing rubber strip 20 to seal the opening of the accommodating cavity 101, so as to reseal after the bag body 10 is opened. Further, a dovetail groove 21 is recessed in the inner side of the first sealing rubber strip 20. A dovetail block 31 is protruded on the inner side of the second sealing rubber strip 30. The dovetail block 31 is clamped and sealed with the dovetail groove 21. The structure is simple, the disassembly and assembly are convenient, and the connection is stable.

[0036] In addition, the top of the first sealing strip 20 is hot melt connected with a first handle 40, the first handle 40 is provided with a first handle hole 41, the top of the second sealing strip 30 is hot melt connected with a second handle 50, the second handle 50 is opposite to the first handle 40, the second handle 50 is provided with a second handle hole 51, so as to facilitate the handbag packaging bag, convenient to carry. And, the inside of the first handle 40 and the inside of the second handle 50 are connected with a tearable film 60, the tearable film 60 seals the opening of the accommodation cavity 101, so as to facilitate the judgment of whether the packaging bag has been opened.

[0037] In addition, the bottom of the bag body 10 is provided with an air nozzle 71, the air nozzle 71 is communicated with the accommodation cavity 101, and the air nozzle 71 is provided with a one-way valve 72 for one-way communication between the outside and the accommodation cavity, so that the gas is filled into the accommodation cavity 101 through the air nozzle 71, the bag body 10 is inflated and opened as a whole, the article in the accommodation cavity 101 is taken out, and the specific gas can be injected into the accommodation cavity 101 to meet the needs of article transportation or preservation.

[0038] The use method of the embodiment is as follows:

[0039] When the oil-containing article is packaged, the second sealing strip 30 is separated from the first sealing strip 20, then the article is placed in the accommodation cavity 101, then the second sealing strip 30 is sealingly connected with the first sealing strip 20, and the tearable film 60 is hot melt fixedly connected between the first handle 40 and the second handle 50 and seals the opening of the accommodation cavity 101. When the article needs to be taken out, the tearable film 60 is torn, then the second sealing strip 30 is separated from the first sealing strip 20, and then the article can be taken out from the accommodation cavity 101, and after the article is taken out, the second sealing strip 30 is sealingly connected with the first sealing strip 20.

[0040] The design emphasis of the utility model lies in: through design the bag body into including oil resistance layer, waterproof layer, anti-stretch layer, puncture resistance layer and anti-freezing and heat insulation layer, make this product have good oil resistance, waterproof, anti-stretch, puncture resistance and anti-freezing and heat insulation characteristics, can bear greater weight, not easy to freeze crack, can well protect the article, the product is more durable, longer service life, and is worth promoting.

[0041] The above is only the preferred embodiment of the utility model, and does not limit the technical range of the utility model, so any slight modification, equivalent change and modification according to the technical essence of the utility model of the above embodiment still belongs to the range of the technical scheme of the utility model.

Claims

1. An oil-resistant and antifreeze packaging bag, comprising a bag body having a receiving cavity with an upward opening; characterized in that: The bag body includes an oil-resistant layer, a waterproof layer, an anti-stretching layer, an anti-puncture layer and an antifreeze and heat-insulating layer; the inner surface of the oil-resistant layer constitutes the aforementioned accommodating cavity, the waterproof layer is compounded on the outer surface of the oil-resistant layer, the anti-stretching layer is compounded on the outer surface of the waterproof layer, the anti-puncture layer is compounded on the outer surface of the anti-stretching layer, and the antifreeze and heat-insulating layer is compounded on the outer surface of the anti-puncture layer.

2. The oil-resistant and antifreeze packaging bag according to claim 1, characterized in that: The oil-resistant layer is made of TPU material and has a thickness of 25-30 μm.

3. The oil-resistant and antifreeze packaging bag according to claim 1, characterized in that: The waterproof layer is a BOPP / VMCPP double-layer composite structure with a thickness of 15-25 μm.

4. The oil-resistant and antifreeze packaging bag according to claim 1, characterized in that: The anti-stretching layer is made of high-density polyethylene, polypropylene, linear low-density polyethylene, nylon or polyester, and has a thickness of 15-20 μm.

5. The oil-resistant and antifreeze packaging bag according to claim 1, characterized in that: The puncture-proof layer is made of polyvinylidene chloride, co-extruded polyethylene or ethylene-vinyl alcohol copolymer, and has a thickness of 15-20 μm.

6. The oil-resistant and antifreeze packaging bag according to claim 1, characterized in that: The antifreeze and heat-insulating layer comprises a glass fiber layer and an ethylene-tetrafluoroethylene copolymer compounded on the glass fiber layer. The thickness of the antifreeze and heat-insulating layer is 35-45 μm.

7. The oil-resistant and antifreeze packaging bag according to claim 1, characterized in that: A first sealing strip is fixedly connected to the top of one side of the bag body by hot melt, and a second sealing strip is fixedly connected to the top of the other side of the bag body by hot melt. The second sealing strip is detachably sealed with the first sealing strip to seal the opening of the accommodating cavity.

8. The oil-resistant and antifreeze packaging bag according to claim 7, characterized in that: A dovetail groove is concavely provided on the inner side of the first sealing strip, and a dovetail block is convexly provided on the inner side of the second sealing strip. The dovetail block is clamped and sealed in the dovetail groove.

9. The oil-resistant and antifreeze packaging bag according to claim 7, characterized in that: A first handle is connected to the top of the first sealing strip by hot melt, and a first handle hole is opened on the first handle; a second handle is connected to the top of the second sealing strip by hot melt, and the second handle is opposite to the first handle and a second handle hole is opened on the second handle.

10. The oil-resistant and antifreeze packaging bag according to claim 1, characterized in that: The bottom of the bag body is provided with an air nozzle, which is communicated with the accommodating cavity, and a one-way valve is provided on the air nozzle for allowing the outside to be connected to the accommodating cavity in one direction.

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