Non-woven fabric bag adopting low-temperature hot melt adhesive compounding and implementation method thereof

Abstract

The present application provides a kind of non-woven bag of low temperature hot melt adhesive composite, comprising: bag body, multiple connecting pads and two handles;The bag body includes film layer, first adhesive layer and non-woven fabric layer, the first adhesive layer is arranged in one side of the film layer, and the non-woven fabric layer is arranged in one side of the first adhesive layer;Multiple connecting pads are respectively arranged in the inner wall of the bag body Two handles are respectively fixedly connected to one end of multiple connecting pads.The present application provides a kind of non-woven bag of low temperature hot melt adhesive composite and its implementation method, and the first adhesive layer is low temperature hot melt adhesive as composite adhesive, which reduces the energy consumption of non-woven fabric composite process, achieves the purpose of energy saving and carbon reduction of non-woven bag, and the temperature is low during composite operation, not easy to scald temperature sensitive material and non-woven fabric fiber, which is beneficial to improve the heat preservation performance, breaking strength of bag body.

Description

Technical Field

[0001] This invention relates to the field of nonwoven bags, and more particularly to a nonwoven bag using low-temperature hot melt adhesive lamination and its implementation method. Background Technology

[0002] As an environmentally friendly alternative to plastic bags, non-woven bags are widely used in various packaging fields due to their advantages such as being lightweight, flexible, biodegradable, and reusable. As the market demands higher functionality from packaging, single non-woven fabrics can no longer meet the combined requirements of strength, waterproofing, and heat insulation. Composite non-woven bags have become the industry's development direction.

[0003] The composite process of nonwoven bags directly determines their mechanical strength, air permeability, environmental friendliness, and production cost, and is a core aspect of the industry's technological research and development. Currently, most composite nonwoven bags adopt a lamination process, which has many technical bottlenecks and makes it difficult to balance product performance and environmental protection requirements.

[0004] Currently, the lamination process involves bonding nonwoven fabric and functional film by melting lamination particles at high temperatures. Although mass production can be achieved with existing equipment, the melting points of lamination particles from different manufacturers or different batches from the same manufacturer vary greatly, making it difficult to accurately preset temperature parameters. This can easily lead to problems such as uneven composite strength and uneven coating. At the same time, the high temperature of the adhesive layer can cause fiber degradation and structural damage to the nonwoven fabric, affecting various physical properties of the product, such as thermal insulation performance, burst strength, seam strength, and tear strength.

[0005] Therefore, it is necessary to provide a nonwoven bag using low-temperature hot melt adhesive lamination and its implementation method to solve the above-mentioned technical problems. Summary of the Invention

[0006] This invention provides a nonwoven bag and its implementation method using low-temperature hot melt adhesive lamination, which solves the problem of uneven composite strength and uneven coating caused by the large difference in melting point of laminating material particles from different manufacturers or different batches of the same manufacturer.

[0007] To solve the above-mentioned technical problems, the present invention provides a non-woven bag using low-temperature hot melt adhesive composite, comprising: a bag body, multiple connecting pads and two handles; The bag body includes a film layer, a first adhesive layer and a non-woven fabric layer, wherein the first adhesive layer is disposed on one side of the film layer and the non-woven fabric layer is disposed on one side of the first adhesive layer; Multiple connecting pads are respectively disposed on both sides of the inner wall of the bag body, and the four handles of the two handles are respectively fixedly connected to one end of the multiple connecting pads.

[0008] Preferably, the bag body further includes a second adhesive layer and a heat insulation layer, wherein the second adhesive layer is disposed on one side of the non-woven fabric layer, and one side of the heat insulation layer is disposed on one side of the second adhesive layer.

[0009] Preferably, a support ring is fitted on the surface of the bag body, and multiple support plates are provided on the inner wall surface of the bag body.

[0010] Preferably, the support plate is provided with a fixing device inside. The fixing device includes a fixing rod, two fixing blocks, a fixing spring, two locking blocks and a locking groove. The fixing rod is fixedly installed inside the support plate. The two fixing blocks are slidably connected to the surface of the fixing rod. The fixing spring is sleeved on the surface of the fixing rod. One end of each of the two locking blocks is fixedly connected to one end of the two fixing blocks. The locking groove is opened inside the support ring.

[0011] Preferably, the fixing device includes two positioning grooves, two positioning blocks, a connecting plate, and a fixing member. The two positioning grooves are respectively opened inside the two fixing blocks, and the two positioning blocks are respectively slidably connected to the inside of the two positioning grooves. One side of the connecting plate is fixedly connected to one end of the positioning block, and the fixing member is disposed inside the fixing block.

[0012] Preferably, the support ring has a support device inside, the support device including a support groove and a support block, the support groove being formed inside the support ring, and the support block being slidably connected to the inside of the support groove.

[0013] Preferably, a protective bag is provided inside the bag body to protect the inside of the bag body.

[0014] Preferably, the protective bag is provided with a support frame at the top, and a limiting device is provided at the top of the support frame. The limiting device includes a limiting sleeve and a limiting rod. The limiting sleeve is fixedly connected to the top of the support frame, and the limiting rod is slidably connected to the inside of the limiting rod.

[0015] Preferably, a partition is slidably connected to the surface of the limiting rod, and the partition is used to divide the interior of the protective bag.

[0016] A method for producing a nonwoven bag using low-temperature hot melt adhesive lamination includes producing the aforementioned nonwoven bag using low-temperature hot melt adhesive lamination. The method for producing the nonwoven bag using low-temperature hot melt adhesive lamination requires the following steps: S1: Firstly, after the non-woven fabric is unwound, the composite surface is treated with a corona treatment device to improve the surface energy of the material to ensure the adhesion of the composite product. The low-temperature hot melt adhesive is heated by a heating device and then coated onto the film by the composite equipment. S2: Then, the nonwoven fabric and film are wound up after being laminated by the laminating equipment; S3: The curing of the composite material allows the adhesive to fully react, ensuring the performance of the nonwoven bag in various usage scenarios; S4: Finally, the composite material is made into a bag, which is then made into a non-woven bag.

[0017] Compared with related technologies, the non-woven bag and its implementation method using low-temperature hot melt adhesive composite provided by the present invention have the following beneficial effects: This invention provides a nonwoven bag and its implementation method using low-temperature hot melt adhesive composite. The first adhesive layer is low-temperature hot melt adhesive as the composite adhesive, which reduces the energy consumption of the nonwoven fabric composite process and achieves the purpose of energy saving and carbon reduction of the nonwoven bag. At the same time, the low temperature during the composite operation makes it less likely to burn the temperature-sensitive materials and nonwoven fibers, which is beneficial to improving the heat preservation performance and burst strength of the bag. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a first embodiment of a nonwoven bag and its implementation method using low-temperature hot melt adhesive composite provided by the present invention. Figure 2 for Figure 1 A cross-sectional structural diagram of the bag shown; Figure 3 This is a schematic diagram of the structure of a second embodiment of a nonwoven bag and its implementation method using low-temperature hot melt adhesive composite provided by the present invention. Figure 4 A schematic diagram of the structure of a third embodiment of a nonwoven bag using low-temperature hot melt adhesive composite and its implementation method provided by the present invention; Figure 5 for Figure 4 The enlarged schematic diagram of part A shown below; Figure 6 for Figure 5 The enlarged schematic diagram of section B is shown below; Figure 7 This is a schematic diagram of the fourth embodiment of a nonwoven bag and its implementation method using low-temperature hot melt adhesive composite provided by the present invention.

[0019] Numbered in the diagram: 1. Bag body, 101. Film layer, 102. First adhesive layer, 103. Non-woven fabric layer, 104. Second adhesive layer, 105. Insulation layer, 2. Connecting pad, 3. Handle, 4. Support ring, 5. Support plate, 6. Fixing device, 61. Fixing rod, 62. Fixing block, 63. Fixing spring, 64. Locking block, 65. Locking groove, 66. Positioning groove, 67. Positioning block, 68. Connecting plate, 69. Fixing component, 7. Supporting device, 71. Support groove, 72. Supporting block, 8. Protective bag, 9. Limiting device, 91. Limiting sleeve, 92. Limiting rod, 10. Support frame, 11. Partition. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments. Example

[0021] Please refer to the following: Figure 1 and Figure 2 ,in, Figure 1 This is a schematic diagram of the structure of a first embodiment of a nonwoven bag and its implementation method using low-temperature hot melt adhesive composite provided by the present invention. Figure 2 for Figure 1 The diagram shows a cross-sectional view of the bag body. A non-woven bag using low-temperature hot melt adhesive bonding includes: a bag body 1, multiple connecting pads 2, and two handles 3; The bag body 1 includes a film layer 101, a first adhesive layer 102 and a non-woven fabric layer 103. The first adhesive layer 102 is disposed on one side of the film layer 101 and the non-woven fabric layer 103 is disposed on one side of the first adhesive layer 102. Multiple connecting pads 2 are respectively disposed on both sides of the inner wall of the bag body 1, and four of the two handles 3 are respectively fixedly connected to one end of the multiple connecting pads 2.

[0022] The first adhesive layer 102 uses low-temperature hot melt adhesive as a composite adhesive to reduce energy consumption in the non-woven fabric composite process and achieve the purpose of energy saving and carbon reduction in non-woven bags. The low temperature during the composite operation makes it less likely to burn temperature-sensitive materials and non-woven fibers, which is beneficial to improving the heat insulation performance and burst strength of non-woven bags. The composite adhesive uses a low-temperature hot melt adhesive with strong weather resistance and water resistance. Under the processing temperature of 85~95℃, the adhesive has good fluidity, excellent initial tack, surface wetting and machinability, which meets the performance requirements of non-woven bags in various usage scenarios such as shopping, logistics and catering. The adhesive can achieve the required composite strength of nonwoven bags with a low coating amount, reducing the amount of composite adhesive used in the manufacturing process of nonwoven bags and achieving the goal of environmental protection and plastic reduction in nonwoven bags. The composite process technology solution was designed to enable the large-scale mass production of low-temperature hot melt adhesive composite nonwoven bags.

[0023] Data sheet for nonwoven bags laminated with low-temperature hot melt adhesive: Compared with related technologies, the non-woven bag and its implementation method using low-temperature hot melt adhesive composite provided by the present invention have the following beneficial effects: This invention provides a nonwoven bag and its implementation method using low-temperature hot melt adhesive. The first adhesive layer 102 is a low-temperature hot melt adhesive as a composite adhesive, which reduces the energy consumption of the nonwoven fabric composite process and achieves the purpose of energy saving and carbon reduction of the nonwoven bag. At the same time, the low temperature during the composite operation makes it less likely to burn the temperature-sensitive materials and nonwoven fibers, which is beneficial to improving the heat preservation performance and burst strength of the bag body 1. Example

[0024] Please refer to the following: Figure 3 Based on the first embodiment of this application, which provides a nonwoven bag and its implementation method using low-temperature hot melt adhesive lamination, the second embodiment of this application proposes another nonwoven bag and its implementation method using low-temperature hot melt adhesive lamination. The second embodiment is merely a preferred embodiment of the first embodiment, and its implementation will not affect the separate implementation of the first embodiment.

[0025] Specifically, the second embodiment of this application provides a nonwoven bag and its implementation method using low-temperature hot melt adhesive composite, which differs in that the bag body 1 further includes a second adhesive layer 104 and a heat insulation layer 105. The second adhesive layer 104 is disposed on one side of the nonwoven fabric layer 103, and one side of the heat insulation layer 105 is disposed on one side of the second adhesive layer 104.

[0026] The insulation layer 105 is an aluminum foil film, used to keep the items placed inside the bag 1 warm.

[0027] The second adhesive layer 104 is the same as the first adhesive layer 102, and is used to fix the insulation layer 105 and the non-woven fabric layer 103 together.

[0028] Compared with related technologies, the non-woven bag and its implementation method using low-temperature hot melt adhesive composite provided by the present invention have the following beneficial effects: The present invention provides a non-woven bag and its implementation method using low-temperature hot melt adhesive composite. The insulation layer 105 is bonded to one side of the non-woven layer 103 by the first adhesive layer 104, thereby increasing the insulation effect of the bag body 1. Example

[0029] Please refer to the following: Figure 4 , Figure 5 and Figure 6Based on the first embodiment of this application, which provides a nonwoven bag and its implementation method using low-temperature hot melt adhesive lamination, the third embodiment of this application proposes another nonwoven bag and its implementation method using low-temperature hot melt adhesive lamination. The third embodiment is merely a preferred embodiment of the first embodiment, and its implementation will not affect the separate implementation of the first embodiment.

[0030] Specifically, the third embodiment of this application provides a non-woven bag and its implementation method using low-temperature hot melt adhesive composite, which differs in that it also includes a support ring 4, the support ring 4 being sleeved on the surface of the bag body 1, and the inner wall surface of the bag body 1 being provided with multiple support plates 5.

[0031] When installing multiple support plates 5, the support plates 5 on both sides inside the bag body 1 are installed first, and then the support plates 5 at both ends inside the bag body 1 are installed.

[0032] The support plate 5 is provided with a fixing device 6 inside. The fixing device 6 includes a fixing rod 61, two fixing blocks 62, a fixing spring 63, two locking blocks 64 and a locking groove 65. The fixing rod 61 is fixedly installed inside the support plate 5. The two fixing blocks 62 are slidably connected to the surface of the fixing rod 61. The fixing spring 63 is sleeved on the surface of the fixing rod 61. One end of each of the two locking blocks 64 is fixedly connected to one end of the two fixing blocks 62. The locking groove 65 is opened inside the support ring 4.

[0033] Both ends of the card slot 65 are provided with hidden grooves, and a triangular block is fixedly connected to one side of the card block 64. After the triangular block enters the interior of the hidden groove, it limits the movement between the support plate 5 and the support ring 4.

[0034] The fixing device 6 includes two positioning grooves 66, two positioning blocks 67, a connecting plate 68, and a fixing member 68. The two positioning grooves 66 are respectively opened inside the two fixing blocks 62, and the two positioning blocks 67 are respectively slidably connected to the inside of the two positioning grooves 66. One side of the connecting plate 68 is fixedly connected to one end of the positioning block 67, and the fixing member 68 is disposed inside the fixing block 62.

[0035] The positioning groove 66 is used to facilitate the movement of the fixing block 62 by the staff using their fingers.

[0036] The fixing component 68 is a magnet and a rubber pad. Magnets are fixedly connected inside both the fixing block 62 and the positioning block 67. After the magnet inside the positioning block 67 and the magnet inside the fixing block 62 attract each other, the positioning block 67 and the fixing block 62 are limited.

[0037] One end of each of the multiple positioning blocks 67 is fixedly connected to one side of the connecting plate 68. After the positioning blocks 67 are inserted into the positioning groove 66, they limit the two fixing blocks 62, thereby increasing the stability of the locking block 64 when it is being limited.

[0038] The support ring 4 is provided with a support device 7 inside. The support device 7 includes a support groove 71 and a support block 72. The support groove 71 is opened inside the support ring 4, and the support block 72 is slidably connected to the inside of the support groove 71.

[0039] Both the protective bag 8 and the support ring 4 have support grooves 71 that are adapted to the support blocks 72. One end of each of the multiple support blocks 72 is fixedly connected to one side of each of the multiple support plates 5. After the multiple support plates 5 insert the multiple support blocks 72 into the multiple support grooves 71, they support the protective bag 8 and the bag body 1 bracket, preventing the protective bag 8 and the bag body 1 from separating.

[0040] The inside of the bag body 1 is provided with a protective bag 8, which is used to protect the inside of the bag body 1.

[0041] The working principle of the nonwoven bag and its implementation method using low-temperature hot melt adhesive lamination provided by this invention is as follows: In use, after placing the protective bag 8 inside the bag body 1 and aligning the bag openings of the protective bag 8 and the bag body 1, move the two fixing blocks 62 to one side. This causes the fixing rod 61 to move towards the center while simultaneously compressing the fixing spring 63. As the two fixing blocks 62 move to one side, they also move the two locking blocks 64 to the appropriate position. Then, insert the support block 72 on one side of the support plate 5 into the support groove 71, and insert the two locking blocks 64 into the locking groove 65. After releasing the fixing blocks 62, the fixing spring 63 pushes the two fixing blocks 62 and the two locking blocks 64 to move to both sides, causing the triangular blocks on one side of the two locking blocks 64 to enter the hidden groove at one end of the locking groove 65. This limits the movement between the support plate 5 and the support ring 4, thus limiting the movement between the bag opening of the protective bag 8 and the bag opening bracket of the bag body 1.

[0042] When the protective bag 8 needs to be replaced, the two fixing blocks 62 are moved to one side, which in turn moves the two locking blocks 64 to one side. This causes the triangular block on one side of the locking block 64 to separate from the groove. Then, the support plate 5 is moved to one side, which causes the locking block 64 to be removed from the inside of the slot 65. Finally, the protective bag 8 can be removed from the inside of the bag body 1.

[0043] Compared with related technologies, the non-woven bag and its implementation method using low-temperature hot melt adhesive composite provided by the present invention have the following beneficial effects: This invention provides a nonwoven bag using low-temperature hot melt adhesive and its implementation method. The protective bag 8 is installed and removed by a support ring 4 in conjunction with multiple support plates 5 and a fixing device 6. The protective bag 8 protects the inside of the bag body 1 and can be replaced if the protective bag 8 is damaged in the future. Example

[0044] Please refer to the following: Figure 7 Based on the first embodiment of this application, which provides a nonwoven bag and its implementation method using low-temperature hot melt adhesive lamination, the fourth embodiment of this application proposes another nonwoven bag and its implementation method using low-temperature hot melt adhesive lamination. The fourth embodiment is merely a preferred embodiment of the first embodiment, and its implementation will not affect the separate implementation of the first embodiment.

[0045] Specifically, the fourth embodiment of this application provides a non-woven bag and its implementation method using low-temperature hot melt adhesive composite, which differs in that it also includes a support frame 10. The support frame 10 is disposed on the top of the protective bag 8. A limiting device 9 is provided on the top of the support frame 10. The limiting device 9 includes a limiting sleeve 91 and a limiting rod 92. The limiting sleeve 91 is fixedly connected to the top of the support frame 10, and the limiting rod 92 is slidably connected to the inside of the limiting rod 91.

[0046] A partition 11 is slidably connected to the surface of the limiting rod 91, and the partition 11 is used to separate the interior of the protective bag 8.

[0047] Multiple limiting sleeves 91 are fixedly connected to the bottom of the support plate 5. When the support plate 5 is installed, the multiple limiting sleeves 91 are put on the surface of the limiting rod 92. The two ends of the limiting rod 92 are limited by the multiple limiting sleeves 91 at the top of the support frame 10 and the limiting sleeves 91 at the bottom of the support plate 5.

[0048] The partition 11 has a sliding hole inside that matches the limiting rod 92, which is used to limit the partition 11 after it is sleeved on the surface of the limiting rod 92.

[0049] A method for producing a nonwoven bag using low-temperature hot melt adhesive lamination includes producing the aforementioned nonwoven bag using low-temperature hot melt adhesive lamination. The method for producing the nonwoven bag using low-temperature hot melt adhesive lamination requires the following steps: S1: Firstly, after the non-woven fabric is unwound, the composite surface is treated with a corona treatment device to improve the surface energy of the material to ensure the adhesion of the composite product. The low-temperature hot melt adhesive is heated by a heating device and then coated onto the film by the composite equipment. S2: Then, the nonwoven fabric and film are wound up after being laminated by the laminating equipment; S3: The curing of the composite material allows the adhesive to fully react, ensuring the performance of the nonwoven bag in various usage scenarios; S4: Finally, the composite material is made into a bag, which is then made into a non-woven bag.

[0050] As a laminating equipment, the solventless laminating machine features high precision in controlling the amount of adhesive applied (±0.15g / ㎡), low energy consumption, high-precision tension control, and high-speed operation (200-300m / min).

[0051] A corona treatment device is added to the solventless laminating machine to corona treat the nonwoven fabric. After treatment, the surface energy of the nonwoven fabric is ≥36 dyne / cm to ensure the bonding strength of the laminated product.

[0052] Phase 1: Substrate unwinding and corona activation (pretreatment) Unwinding and leveling: The nonwoven fabric roll and the film roll are unwound by the unwinding mechanism, and the substrate is ensured to be flat and wrinkle-free by the guide roller and the leveling roller.

[0053] Corona treatment (key enhancement): The nonwoven substrate passes through a high-voltage electric field between the corona treatment roller and the corona electrode.

[0054] Principle: High-frequency high-voltage discharge ionizes the air to generate plasma, which bombards the surface of the nonwoven fabric.

[0055] Effects: Chemical modification: Implantation of polar groups such as hydroxyl and carboxyl groups significantly increases surface energy (dyne value).

[0056] Physical roughening: The formation of etching pits on the microscopic surface increases the contact area.

[0057] Objective: To solve the problems of surface inertness and difficulty in bonding of non-woven fabrics, and to provide a strong "grip" for low-temperature hot melt adhesives.

[0058] Phase Two: Low-Temperature Hot Melt Adhesive and Precision Coating (Adhesive Supply) Press-plate type melt glue: Solid hot melt adhesive buckets are placed inside a pressure plate type hot melt adhesive machine. The heated pressure plate presses down, melting only the surface layer of adhesive, supplying adhesive as needed, and avoiding prolonged heating and aging.

[0059] Pipeline delivery: The molten adhesive is transported through insulated delivery pipes and controllable heating pipes, maintaining a constant temperature throughout the process to prevent back-condensation.

[0060] Metering roller coating: The molten adhesive is conveyed to the gap between the metering roller and the stationary roller, and a uniform thin film is extruded quantitatively based on the size of the gap. The adhesive is transferred and coated onto the film surface with a precise weight (usually 1~6g / m²).

[0061] Coordination: The application roller and pressure roller assist in the transfer, ensuring a uniform adhesive layer without any missed areas.

[0062] Third stage: Hot pressing lamination and cooling shaping (film formation) Alignment and bonding: The adhesive-coated film and the activated nonwoven fabric are simultaneously introduced between the adhesive roller and the pressure roller.

[0063] Hot-press bonding: Under pressure (0.2-2.0MPa) and temperature (50-120℃), the molten adhesive penetrates into the fiber pores to form a mechanical anchor.

[0064] Cooling and curing: The composite product is cooled by air or water through cooling rollers.

[0065] The low-temperature hot melt adhesive quickly changes from liquid to solid, locking in its bonding strength, and is finally wound up and formed by a composite material take-up roller.

[0066] Plate-type adhesive supply: It adopts an upward pressure structure, which seals and isolates air, making it particularly suitable for PUR moisture-curing adhesives. It prevents the adhesive from reacting or carbonizing prematurely, achieving "instant melting".

[0067] Pre-corona treatment: Surface activation is completed before adhesive application, resulting in more uniform treatment than post-adhesive treatment. This avoids uneven treatment caused by adhesive layer blockage and significantly improves composite peel strength.

[0068] Precise glue control with metering rollers: Quantitative transfer not only saves glue but also controls the composite feel (softness or hardness), preventing glue overflow or delamination.

[0069] The working principle of the nonwoven bag and its implementation method using low-temperature hot melt adhesive lamination provided by this invention is as follows: In use, after placing the support frame 10 at the bottom inside the protective bag 8, the partition 11 is placed on the surface of the limiting rod 92, and the multiple limiting sleeves 91 at the bottom of the support plate 5 are placed on one end of the limiting rod 92, the support plate 5 is then installed.

[0070] Compared with related technologies, the non-woven bag and its implementation method using low-temperature hot melt adhesive composite provided by the present invention have the following beneficial effects: This invention provides a non-woven bag and its implementation method using low-temperature hot melt adhesive composite. The limiting device 9 is used to divide the interior of the protective bag 8 into multiple areas through the partition 11, thereby facilitating the storage of different items.

[0071] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A nonwoven bag laminated with low-temperature hot melt adhesive, characterized in that, include: The bag body, multiple connecting pads, and two handles; The bag body includes a film layer, a first adhesive layer and a non-woven fabric layer, wherein the first adhesive layer is disposed on one side of the film layer and the non-woven fabric layer is disposed on one side of the first adhesive layer; Multiple connecting pads are respectively disposed on both sides of the inner wall of the bag body, and the four handles of the two handles are respectively fixedly connected to one end of the multiple connecting pads.

2. The nonwoven bag using low-temperature hot melt adhesive lamination according to claim 1, characterized in that, The bag body further includes a second adhesive layer and a heat insulation layer. The second adhesive layer is disposed on one side of the non-woven fabric layer, and one side of the heat insulation layer is disposed on one side of the second adhesive layer.

3. A nonwoven bag using low-temperature hot melt adhesive lamination according to claim 2, characterized in that, The surface of the bag is fitted with a support ring, and the inner wall surface of the bag is provided with multiple support plates.

4. A nonwoven bag using low-temperature hot melt adhesive lamination according to claim 3, characterized in that, The support plate is equipped with a fixing device, which includes a fixing rod, two fixing blocks, a fixing spring, two locking blocks and a locking groove. The fixing rod is fixedly installed inside the support plate. The two fixing blocks are slidably connected to the surface of the fixing rod. The fixing spring is sleeved on the surface of the fixing rod. One end of each of the two locking blocks is fixedly connected to one end of the two fixing blocks. The locking groove is opened inside the support ring.

5. A nonwoven bag using low-temperature hot melt adhesive lamination according to claim 4, characterized in that, The fixing device includes two positioning grooves, two positioning blocks, a connecting plate, and a fixing member. The two positioning grooves are respectively opened inside the two fixing blocks, and the two positioning blocks are respectively slidably connected to the inside of the two positioning grooves. One side of the connecting plate is fixedly connected to one end of the positioning block, and the fixing member is disposed inside the fixing block.

6. A nonwoven bag using low-temperature hot melt adhesive lamination according to claim 3, characterized in that, The support ring is provided with a support device inside. The support device includes a support groove and a support block. The support groove is opened inside the support ring, and the support block is slidably connected to the inside of the support groove.

7. A nonwoven bag using low-temperature hot melt adhesive lamination according to claim 1, characterized in that, The bag body has a protective bag inside, which is used to protect the inside of the bag body.

8. A nonwoven bag using low-temperature hot melt adhesive lamination according to claim 7, characterized in that, The protective bag is provided with a support frame at the top, and a limiting device is provided at the top of the support frame. The limiting device includes a limiting sleeve and a limiting rod. The limiting sleeve is fixedly connected to the top of the support frame, and the limiting rod is slidably connected to the inside of the limiting rod.

9. A nonwoven bag using low-temperature hot melt adhesive lamination according to claim 8, characterized in that, A partition is slidably connected to the surface of the limiting rod, and the partition is used to divide the interior of the protective bag.

10. A method for realizing a nonwoven bag using low-temperature hot melt adhesive lamination, comprising the nonwoven bag using low-temperature hot melt adhesive lamination as described in any one of claims 1-9, wherein the method for realizing the nonwoven bag using low-temperature hot melt adhesive lamination is required during the preparation of the nonwoven bag, characterized in that, The following steps: S1: Firstly, after the non-woven fabric is unwound, the composite surface is treated with a corona treatment device to improve the surface energy of the material to ensure the adhesion of the composite product. The low-temperature hot melt adhesive is heated by a heating device and then coated onto the film by the composite equipment. S2: Then, the nonwoven fabric and film are wound up after being laminated by the laminating equipment; S3: The curing of the composite material allows the adhesive to fully react, ensuring the performance of the nonwoven bag in various usage scenarios; S4: Finally, the composite material is made into a bag, which is then made into a non-woven bag.

Images