A processing device for disposable plastic-replacing paper bag

Abstract

The invention discloses a processing device for a disposable packaging plastic-substitute paper bag, belonging to the technical field of packaging bags. The plastic-substitute paper bag comprises a packaging bag body, thermal insulation packaging paper, and a paper bag adhesive tape. The paper bag adhesive tape is arranged on the edge of the thermal insulation packaging paper. After the thermal insulation packaging paper is folded, the edge of the thermal insulation packaging paper is bonded and fixed by the paper bag adhesive tape to form a packaging bag body. The interior of the packaging bag body is hollow and forms a packaging space. The thermal insulation packaging paper is composed of a plastic-substitute paper layer, an inner interlayer, and a plastic-substitute paper layer in sequence along the thickness direction. The plastic-substitute paper layer is composed of a heat-sealed barrier layer, a base paper layer, and a heat-sealed barrier layer in sequence along the thickness direction. The edges of the two plastic-substitute paper layers are bonded and fixed after heating the heat-sealed barrier layer, and a plurality of thermal insulation particles are filled in the inner interlayer. The processing device comprises a paper conveyor belt, a feeding mechanism, an upper layer introduction roller, a pressing roller, and an edge sealing mechanism. The plastic-substitute paper bag of the invention is conducive to the long-term transportation of products that need to be transported at high temperatures.

Description

Technical Field

[0001] The invention relates to the technical field of packaging bags, and in particular to a processing device for disposable packaging plastic-substitute paper bags. Background Art

[0002] Most common products in daily life need to be packaged in packaging bags to isolate the products from the outside world and prevent them from being contaminated. Traditional plastic packaging bags will form difficult-to-degrade white pollution garbage when abandoned after use. It is also difficult for industries such as takeout that have a high demand for packaging bags to give up the use of packaging bags. Therefore, some businesses are gradually using degradable packaging paper bags instead of traditional plastic packaging bags, which is conducive to reducing the generation of white pollution garbage; in addition, in the takeout industry, based on the high-end needs of users, businesses use thermal insulation packaging bags for some products that require low-temperature / high-temperature insulation delivery or products that require long-term delivery. These thermal insulation packaging bags usually have a foam insulation layer inside to improve the insulation effect. Based on the production cost of the thermal insulation packaging bag, the foam insulation layer is usually made of difficult-to-degrade plastic materials. The amount of difficult-to-degrade materials contained in an thermal insulation bag is usually more than twice that of a traditional plastic packaging bag. These thermal insulation packaging bags will produce more white pollution garbage after being abandoned.

[0003] Based on the above situation, a Chinese patent with publication number CN109335254A discloses a fully biodegradable thermal insulation and environmentally friendly express packaging bag, including a bag body. The bag body is made of double-layer fabric: an inner layer of hot-rolled non-woven fabric, an outer layer of coated non-woven fabric, and an intermediate layer. The intermediate layer is filled with thermal insulation fiber, and polylactic acid fiber is used as the thermal insulation fiber. The bag body is made of polylactic acid biodegradable plastic material as the base material, and is made through polylactic acid spinning - thin non-woven fabric manufacturing - non-woven fabric coating - printing - bag making - cotton filling, and the coating uses polybutylene adipate / terephthalate as the raw material.

[0004] The above patent document discloses an insulation packaging bag made of degradable materials. The inner layer, outer layer, insulation fiber, coating, etc. of the insulation packaging bag are all made of degradable plastic as raw materials, so that the insulation packaging bag can be completely degraded. The insulation fiber is filled in the middle layer. The tiny air layer between the insulation fibers can slow down the loss of heat and play a role in insulation. However, the insulation fiber itself cannot generate heat during the product transportation process. It is difficult to effectively prevent products that need to be transported at high temperature from gradually cooling down during transportation. It is not suitable for transporting such products for a long time. Therefore, the insulation packaging bag still has room for improvement. Summary of the invention

[0005] In view of the technical defects existing in the background technology, the present invention proposes a processing device for disposable packaging plastic-substitute paper bags, which solves the above technical problems and meets the actual needs. The specific technical solution is as follows:

[0006] A disposable plastic-substitute paper bag, comprising a packaging bag body, thermal insulation packaging paper, and a paper bag adhesive tape, wherein the paper bag adhesive tape is arranged at the edge of the thermal insulation packaging paper, and the thermal insulation packaging paper is folded and the edge of the thermal insulation packaging paper is bonded and fixed by the paper bag adhesive tape to form a packaging bag body, wherein the interior of the packaging bag body is hollow and forms a packaging space;

[0007] The thermal insulation packaging paper is composed of a plastic substitute paper layer, an inner interlayer, and a plastic substitute paper layer in sequence along the thickness direction; the plastic substitute paper layer is composed of a heat-sealing barrier layer, a base paper layer, and a heat-sealing barrier layer in sequence along the thickness direction; the edges of the two plastic substitute paper layers are bonded and fixed after heating the heat-sealing barrier layer; and the inner interlayer is filled with a plurality of thermal insulation particles.

[0008] As a further technical solution of the present invention, the thermal insulation particles are made of granular paraffin wax, and the phase change temperature of the paraffin wax is 40-60°C.

[0009] As a further technical solution of the present invention, the thermal insulation particles are composed of first reactive particles and second reactive particles. The first reactive particles are composed of paraffin on the surface and water inside. The second reactive particles are composed of paraffin on the surface and calcium oxide powder inside.

[0010] As a further technical solution of the present invention, the mass ratio of the first reaction particles to the second reaction particles in the thermal insulation particles is 1:(1-2).

[0011] As a further technical solution of the present invention, the inner interlayer is provided with a plurality of dividing strips extending along the opposite ends of the plastic substitute paper layer. The dividing strips are formed by heating the heat-sealed barrier layers on both sides of the inner interlayer and bonding them to each other. The thermal insulation particles are arranged between two adjacent dividing strips or between the dividing strip and the edge of the plastic substitute paper layer.

[0012] As a further technical solution of the present invention, the base paper layer is selected from wood pulp paper and kraft paper, and the grammage of the base paper layer is 40-100gsm.

[0013] A processing device for disposable plastic-substitute paper bags, comprising a paper conveyor belt, a feeding mechanism, and an edge-sealing mechanism, wherein the feeding mechanism and the edge-sealing mechanism are both arranged above the paper conveyor belt, and a paper support plate is arranged at one end of the paper conveyor belt;

[0014] The material discharge mechanism comprises a material storage bin which is hollow inside and a material discharge port which is arranged at the bottom of the material storage bin and opens toward the paper conveyor belt;

[0015] An upper layer introduction roller and a pressing roller are arranged in sequence between the unloading mechanism and the edge sealing mechanism, and a gap is arranged between the pressing roller and the paper conveyor belt to allow the heat-insulating packaging paper to pass through;

[0016] The edge-sealing mechanism comprises the following structures: an edge-sealing roller, both ends of which are provided with edge-sealing rollers, the bottom of which is in contact with the surface of the paper conveyor belt, a paper cutter, which is arranged on the side of the edge-sealing roller away from the feeding mechanism, the blade of which faces the paper support plate, and edge-sealing pressing plates are arranged on both sides of the paper cutter;

[0017] The surface of the paper support plate is provided with a paper cutting groove matching the paper cutter.

[0018] As a further technical solution of the present invention, a plurality of partition baffles are provided at the bottom of the storage bin, and the partition baffles divide the discharge opening into a plurality of small openings for small materials, and the positions where the partition baffles are arranged match the dividing belts.

[0019] As a further technical solution of the present invention, a plurality of separating rollers are provided on the surface of the edge banding roller, wherein the separating roller is arranged between two edge banding rollers, the bottom of the separating roller abuts against the surface of the paper conveyor belt, and the position of the separating roller matches the separating belt.

[0020] The beneficial effects of the present invention are:

[0021] The thermal insulation packaging paper of the present invention uses a plastic substitute paper layer as a main packaging protection structure. The heat-sealed barrier layers on the surface of the plastic substitute paper layer are adhered to each other after heating, so that the thermal insulation packaging paper is fixed into the packaging bag body, and can prevent external liquids such as moisture from penetrating into the interior of the packaging bag body, and does not affect the degradability of the plastic substitute paper layer, thereby avoiding the generation of white pollution garbage. The interior of the thermal insulation packaging paper is filled with thermal insulation particles that can change phases. The thermal insulation particles release a large amount of latent heat through phase change to keep the temperature of the packaged product stable for a long time. After the thermal insulation particles absorb heat and melt, they can react with calcium oxide through water and release heat, thereby further extending the time that the product maintains a high temperature, which is beneficial to the long-term transportation of products that need to be transported at high temperatures. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of a disposable packaging plastic-substitute paper bag.

[0023] Figure 2 The invention discloses a cross-sectional view of a first embodiment of a heat-insulating packaging paper for a disposable plastic-replacing paper bag.

[0024] Figure 3 The present invention is a cross-sectional view of a second embodiment of a heat-insulating packaging paper for a disposable plastic-replacing paper bag.

[0025] Figure 4 The present invention is a structural schematic diagram of a processing device for disposable packaging plastic-substitute paper bags.

[0026] Figure 5 The present invention is a cross-sectional view of a material discharging mechanism of a processing device for a disposable packaging plastic-substitute paper bag.

[0027] Figure 6 The present invention is a structural schematic diagram of a first embodiment of an edge sealing roller of a processing device for disposable packaging plastic-substitute paper bags.

[0028] Figure 7 The present invention is a structural schematic diagram of a second embodiment of an edge sealing roller of a processing device for disposable packaging plastic-replacing paper bags.

[0029] Wherein: 1-packaging bag body, 11-paper bag adhesive tape, 12-packaging space, 2-insulating packaging paper, 21-inner interlayer, 22-heat-sealing barrier layer, 23-base paper layer, 24-separation belt, 3-paper conveyor belt, 4-feeding mechanism, 41-storage bin, 42-feeding port, 43-separation baffle, 44-control valve, 5-edge sealing mechanism, 51-edge sealing roller, 52-edge sealing roller, 53-paper cutter, 54-edge sealing pressure plate, 55-separation roller, 6-paper support plate, 7-upper layer introduction roller, 8-pressing roller. DETAILED DESCRIPTION

[0030] The implementation modes of the present invention are described below in conjunction with relevant drawings and embodiments. The implementation modes of the present invention are not limited to the following embodiments, and the present invention relates to relevant necessary components in the technical field, which should be regarded as the known technology in the technical field and can be known and mastered by the technical personnel in the technical field.

[0031] A disposable packaging plastic substitute paper bag comprises a packaging bag body 1, thermal insulation packaging paper 2, and a paper bag adhesive tape 11. The paper bag adhesive tape 11 is arranged on the edge of the thermal insulation packaging paper 2. After the thermal insulation packaging paper 2 is folded, the edge of the thermal insulation packaging paper 2 is bonded and fixed by the paper bag adhesive tape 11 to form the packaging bag body 1. The interior of the packaging bag body 1 is hollow and forms a packaging space 12. The thermal insulation packaging paper 2 is composed of a plastic substitute paper layer, an inner interlayer 21, and a plastic substitute paper layer in sequence along the thickness direction. The plastic substitute paper layer is composed of a heat-sealed barrier layer 22, a base paper layer 23, and a heat-sealed barrier layer 22 in sequence along the thickness direction. The edges of the two plastic substitute paper layers are bonded and fixed after heating the heat-sealed barrier layer 22, and the inner interlayer 21 is filled with a plurality of thermal insulation particles.

[0032] Reference Figure 1 , Figure 2The packaging bag body 1 of the present invention serves as the main structure for packaging products, and the packaging space 12 inside it is used to accommodate the products to be packaged. The heat-insulating packaging papers 2 of different sizes are folded in the folding method of common packaging paper bags to form the prototype of the packaging bag. Subsequently, the heat-sealing barrier layer 22 at the edge of the heat-insulating packaging paper 2 is heated and adhered to each other, and the position where the edges of the heat-insulating packaging paper 2 are adhered to each other forms a paper bag adhesive tape 11. At the same time, the heat-insulating packaging paper 2 on one side of the packaging bag body 1 does not need to be heated and adhered to be fixed, and serves as the entrance for the product to be packaged to be placed inside the packaging space 12, thereby obtaining the packaging bag body 1 for packaging products. A self-adhesive sticker can be set at the entrance of the packaging bag body 1. After the product is placed inside the packaging space 12, the entrance of the packaging bag body 1 can be sealed by the self-adhesive sticker to prevent the product from falling from the entrance during transportation; in addition, two handles can be set on both sides of the entrance of the packaging bag body 1. The structure of the handles is similar to that of the handles of common packaging paper bags, so that the packaging bag body 1 can be directly lifted by the handles, so that the user can take the packaging bag body 1 and the products packaged inside by the handles.

[0033] As a first preferred embodiment of the heat-insulating packaging paper 2 of the present invention, refer to Figure 2 The packaging bag body 1 of the present invention is mainly composed of a heat-insulating packaging paper 2. The heat-insulating packaging paper 2 uses a plastic-substitute paper layer as a main packaging protection structure. The plastic-substitute paper layer is composed of a base paper layer 23 and heat-sealing barrier layers 22 on both sides of the base paper layer 23. The base paper layer 23 is selected from one of wood pulp paper and kraft paper. The gram weight of the base paper layer 23 is 40-100gsm. The heat-sealing barrier layer 22 uses a starch-modified material commonly used for sealing paper packaging bags. The starch-modified material is composed of natural plant starch, high molecular materials such as polyvinyl alcohol, and antioxidants, The starch modified material is composed of additives such as stabilizers, and has properties such as biodegradability, thermoplasticity, and waterproofness. The starch modified material is coated on the surface of the base paper layer 23 and then solidified to form a heat-sealed barrier layer 22, so that the thermal insulation packaging paper 2 can be adhered to each other and fixed to the packaging bag body 1 after heating, and can prevent external liquids such as moisture from penetrating into the interior of the packaging bag body 1, and does not affect the degradability of the plastic-substitute paper layer, so that the plastic-substitute paper layer can replace the plastic material as the packaging protection structure of the packaging bag body 1, thereby avoiding the generation of white pollution garbage.

[0034] After adopting the above structure, it needs to be further explained that the present invention is mainly used for packaging products that need to be transported at high temperatures. The thermal insulation particles are selected from granular paraffin wax, and the phase change temperature of paraffin wax is 40-60°C. Paraffin wax is a phase change material that can absorb or release a large amount of heat during the phase change process while keeping the temperature constant. In the thermal insulation packaging paper 2 of the present invention, the thermal insulation particles are arranged inside the inner interlayer 21 between the two layers of plastic-substitute paper layers. After the packaging bag body 1 is used to package the products that need to be transported at high temperatures, the heat released by the products will be absorbed by the thermal insulation particles and stored inside as heat storage. When the product is transported for a long time and the temperature drops to a temperature close to the phase change temperature of the thermal insulation material, the thermal insulation material can gradually release heat and keep the product at a constant temperature, so that the product can be kept within the temperature range for a long time. For products that need to be transported at high temperatures, such as meals in the takeout industry, the packaging bag body 1 of the present invention is used for packaging, so that the meals can still maintain a high temperature during a long delivery process, so that customers do not need to reheat the meals after receiving them, and it is beneficial to keep some meals that are not suitable for low-temperature consumption in a good taste and quality.

[0035] After adopting the above structure, it needs to be further explained that the heat-insulating particles are composed of first reaction particles and second reaction particles. The first reaction particles are composed of paraffin on the surface and water inside, and the mass ratio of paraffin to water is 1: (1~2). The second reaction particles are composed of paraffin on the surface and calcium oxide powder inside, and the mass ratio of paraffin to calcium oxide powder is 1: (1~2). The paraffin on the surface of the first reaction particles and the second reaction particles is solid at room temperature. When the packaging bag body 1 is used to package high-temperature products such as meals to be delivered, the heat in the meals will be exchanged with the first reaction particles and the second reaction particles. The reaction particles absorb heat. After the two particles absorb heat, the paraffin on the surface will gradually turn into liquid and release the water and calcium oxide inside respectively. After water and calcium oxide come into contact, they will react to generate calcium hydroxide and release heat. This heat will promote the melting of the first reaction particles and the second reaction particles, and can delay or suspend the cooling of the product inside the packaging bag body 1, thereby extending the insulation time of the packaging bag body 1 for the food, so that the food can maintain a high temperature during the long delivery process. Customers do not need to reheat the food after receiving it, and it is helpful for some food that is not suitable for low-temperature consumption to maintain a good taste and quality.

[0036] It should be noted that the surface of the plastic-substitute paper layer is covered with a waterproof heat-seal barrier layer 22, and the edge of the inner interlayer 21 is fixed by heating the heat-seal barrier layer 22. The inner interlayer 21 is a sealed and waterproof space. The first reaction particles and the second reaction particles will only flow in the inner interlayer 21 after being heated and melted, and the water released by the first reaction particles will not penetrate into the base paper layer 23, so that the plastic-substitute paper layer can maintain structural stability; the paraffin material inside the thermal insulation packaging paper 2 can be recycled. After heating the thermal insulation packaging paper 2 and cutting one side, a mixture of liquid paraffin, water and solid calcium hydroxide can be recovered. These mixtures can be recovered as paraffin after standing and separating, thereby improving resource utilization.

[0037] As one of the preferred embodiments of the present invention, the mass ratio of the first reaction particles to the second reaction particles in the heat-insulating particles is 1:(1~2), and the first reaction particles can be prepared by the following operation: the paraffin is heated to a molten state and then mixed with water, and then a paraffin-specific emulsifier, an inorganic salt stabilizer, and an alcohol emulsifier are added and then emulsified into an emulsion of paraffin wrapped in water through a conventional emulsification operation. The amount of the paraffin-specific emulsifier, the inorganic salt stabilizer, and the alcohol emulsifier is appropriately added based on the currently common paraffin emulsification process. After the emulsion is uniform and stable, the temperature is gradually lowered and stirring is maintained. The paraffin will gradually solidify and wrap the water to form the first reaction particles; the second reaction particles can be prepared by the following operation: the paraffin is heated to a molten state and then added Calcium oxide powder and dispersant are added and stirred evenly. After the paraffin is cooled and solidified, it is cut, crushed and sieved to obtain the second reaction particles. 1g of calcium oxide can react completely with about 0.32g of water. The mass ratio of paraffin to water in the first reaction particles is 7:3, and the mass ratio of paraffin to calcium oxide in the second reaction particles is 1:1. After the first reaction particles and the second reaction particles are mixed, it is necessary to ensure that the calcium oxide is completely reacted after the calcium oxide and water react in the inner interlayer 21. The mass of water in the first reaction particles needs to be in an excess state in the subsequent reaction. The mixing ratio of the first reaction particles and the second reaction particles needs to be adaptively adjusted according to the water content in the first reaction particles and the calcium oxide content in the second reaction particles.

[0038] As a second preferred embodiment of the heat-insulating packaging paper 2 of the present invention, refer to Figure 3, a plurality of dividing strips 24 extending along the opposite ends of the plastic-substitute paper layer are provided in the inner interlayer 21, and the dividing strips 24 are formed by heating the heat-sealed barrier layers 22 on both sides of the inner interlayer 21 and bonding them together, and the thermal insulation particles are arranged between two adjacent dividing strips 24 or between the dividing strips 24 and the edge of the plastic-substitute paper layer; the dividing strips 24 divide the inner interlayer 21 into a plurality of small spaces, and these small spaces are filled with thermal insulation particles. The thermal insulation particles will have fluidity after absorbing heat and melting. After adopting this structure, the thermal insulation particles will not aggregate due to fluidity and gravity after melting, and can be evenly dispersed in the inner interlayer 21, so that the packaging bag body 1 can better insulate the product; in addition, the dividing strips 24 can intermittently bond and fix the plastic-substitute paper layers on both sides of the inner interlayer 21 to avoid bulging, stratification and the like inside the thermal insulation packaging paper 2, which is beneficial to improving the structural stability of the thermal insulation packaging paper 2.

[0039] A processing device for disposable plastic-substitute paper bags, comprising a paper conveyor belt 3, a feeding mechanism 4, and an edge sealing mechanism 5. The feeding mechanism 4 and the edge sealing mechanism 5 are both arranged above the paper conveyor belt 3, and a paper support plate 6 is arranged at one end of the paper conveyor belt 3; the feeding mechanism 4 comprises a hollow storage bin 41 and a feeding port 42 arranged at the bottom of the storage bin 41 and opening toward the paper conveyor belt 3; an upper introduction roller 7 and a pressing roller 8 are arranged between the feeding mechanism 4 and the edge sealing mechanism 5 in sequence, and the pressing roller 8 and the paper conveyor belt 3 are connected to each other. A gap is provided in between to allow the thermal insulation packaging paper 2 to pass through; the edge sealing mechanism 5 includes the following structure: an edge sealing roller 51, edge sealing rollers 52 are provided at both ends of the edge sealing roller 51, the bottom of the edge sealing roller 52 abuts against the surface of the paper conveyor belt 3, a paper cutter 53, the paper cutter 53 is provided on the side of the edge sealing roller 51 away from the unloading mechanism 4, the blade of the paper cutter 53 faces the paper support plate 6, and edge sealing pressing plates 54 are provided on both sides of the paper cutter 53; a paper cutting groove matching the paper cutter 53 is opened on the surface of the paper support plate 6.

[0040] Reference Figure 4 , Figure 5 , Figure 6 The processing device of the present invention is mainly used for processing heat-insulating packaging paper 2. The paper conveyor belt 3 rotates from one end close to the unloading mechanism 4 toward one end of the paper support plate 6 under the drive of the motor. A plurality of rotatable support rollers can be arranged at the bottom of the belt in the paper conveyor belt 3 to improve the supporting force of the belt surface. During the rotation of the belt in the paper conveyor belt 3, it passes through the unloading mechanism 4, the upper introduction roller 7, the pressing roller 8, and the edge sealing roller 51 in sequence. A reeling device for releasing the plastic-substitute paper layer is arranged on the side of the paper conveyor belt 3 away from the paper support plate 6, and another reeling device for releasing the plastic-substitute paper layer is arranged on the side of the upper introduction roller 7; the unloading mechanism 4 accommodates the heat-insulating particles through the storage bin 41, and a control valve 44 for controlling the opening or closing of the unloading port 42 is arranged at the bottom of the storage bin 41; as a first preferred embodiment of the edge sealing roller 51 of the present invention, refer to Figure 6The edge sealing roller 52 uses an internal heating wire to increase its surface temperature to above the melting temperature of the heat sealing barrier layer 22, and the edge sealing pressing plate 54 uses an internal heating wire to increase its bottom temperature to above the melting temperature of the heat sealing barrier layer 22. The paper cutter 53 and the edge sealing pressing plate 54 are both provided with electric push rods on the top to move them downward.

[0041] The working principle of the processing device is as follows: the unwinding device on one side of the paper conveyor belt 3 releases a layer of plastic substitute paper and conveys it along the paper conveyor belt 3 toward the paper support plate 6. The unwinding mechanism 4 opens the unwinding port 42 by controlling the valve 44 to apply the thermal insulation particles on the surface of the plastic substitute paper layer. The application of the thermal insulation particles needs to avoid the position where the edge of the thermal insulation packaging paper 2 is bonded and fixed. The unwinding device on one side of the upper introduction roller 7 releases another layer of plastic substitute paper and covers it on the surface of the thermal insulation particles under the guidance of the upper introduction roller 7. Then the two layers of plastic substitute paper are initially squeezed between the lamination roller 8 and the paper conveyor belt 3. The two layers of plastic paper are pressed together by the edge banding roller 52, and then the edges of the two layers of plastic paper are heated and rolled to form an inner sandwich 21 between the two layers of plastic paper. At this time, the two ends of the inner sandwich 21 along the conveying direction of the paper conveyor belt 3 are not yet adhered and fixed. When the two layers of plastic paper are conveyed to the bottom of the paper cutter 53, the electric push rod pushes the paper cutter 53 and the edge banding pressing plate 54 to move downward. The edge banding pressing plate 54 on the side of the paper cutter 53 close to the edge banding roller 51 presses the inner sandwich 21. 1 is heat-sealed on the edge of the paper conveyor belt 3 in the conveying direction, and the edge-sealing pressing plate 54 on the other side is heat-sealed on the edge of the inner interlayer 21 in the conveying direction away from the paper conveyor belt 3. The edges of the two plastic-free paper layers have been heat-sealed and together with the heat-insulating particles in the inner interlayer, they form the heat-insulating packaging paper 2. The paper cutter 53 is used to cut and separate two adjacent heat-insulating packaging papers 2. The paper cutting groove allows the blade of the paper cutter 53 to move to the bottom of the paper support plate 6, ensuring that the paper cutter 53 can smoothly cut the heat-insulating packaging paper 2. The cut insulation wrapping paper 2 can be processed into the packaging bag body 1 by the currently common packaging bag forming and edge sealing device. In the packaging bag forming and edge sealing device, the insulation wrapping paper 2 is folded into an arc shape by a folding roller and other structures, and then the edges on both sides of the insulation wrapping paper 2 are overlapped and fixed by hot pressing to form a packaging bag prototype, or two pieces of insulation wrapping paper 2 are overlapped and the edges on both sides are fixed by hot pressing to form a packaging bag prototype, and then the packaging bag prototype is cut and one side opening is sealed by hot pressing to obtain the packaging bag body 1, and the other side opening is used to load items into the packaging space 12.

[0042] As one of the preferred embodiments of the present invention, refer to Figure 4 , Figure 5A plurality of partition baffles 43 are provided at the bottom of the storage bin 41, and the partition baffles 43 divide the feed opening 42 into a plurality of small feed openings, and the position of the partition baffles 43 matches the dividing strip 24; the partition baffles 43 can make the thermal insulation particles applied by the feed opening 42 on the surface of the plastic-substitute paper layer be laid in a long strip shape, and a plurality of gaps are formed between these thermal insulation particles laid in a long strip shape, so as to facilitate the subsequent hot pressing process into the dividing strip 24, and separate the thermal insulation particles in the inner interlayer 21 into a plurality of parts, so as to avoid the aggregation of the thermal insulation particles after melting, and avoid the bulging and stratification inside the thermal insulation packaging paper 2, which is beneficial to improve the structural stability of the thermal insulation packaging paper 2.

[0043] After adopting the above structure, it is necessary to further explain that, as a second preferred embodiment of the edge banding roller 51 of the present invention, referring to Figure 7 A plurality of separating rollers 55 are provided on the surface of the edge-sealing roller 51. The separating rollers 55 are arranged between the two edge-sealing rollers 52. The bottom of the separating rollers 55 abuts against the surface of the paper conveyor belt 3. The position of the separating rollers 55 matches the separating strip 24. The separating rollers 55 increase their surface temperature to above the melting temperature of the heat-sealing barrier layer 22 through the internal heating wire. The separating rollers 55 form a plurality of gaps between the long strips of thermal insulation particles through hot pressing to form separating strips 24, and separate the thermal insulation particles in the inner interlayer 21 into a plurality of parts, so as to avoid aggregation of the thermal insulation particles after melting, and avoid bulging and stratification inside the thermal insulation packaging paper 2, which is beneficial to improving the structural stability of the thermal insulation packaging paper 2.

[0044] To sum up, the thermal insulation packaging paper 2 of the present invention uses the plastic substitute paper layer as the main packaging protection structure. The heat-sealed barrier layer 22 on the surface of the plastic substitute paper layer is adhered to each other after heating to fix the thermal insulation packaging paper into the packaging bag body 1, and can prevent external liquids such as moisture from penetrating into the interior of the packaging bag body 1, and does not affect the degradability of the plastic substitute paper layer, thereby avoiding the generation of white pollution garbage. The interior of the thermal insulation packaging paper 2 is filled with thermal insulation particles that can change phases. The thermal insulation particles release a large amount of latent heat through phase change to keep the temperature of the packaged product stable for a long time, and after the thermal insulation particles absorb heat and melt, they can react with calcium oxide through water and release heat, thereby further extending the time that the product maintains a high temperature, which is beneficial to the long-term transportation of products that need to be transported at high temperatures.

[0045] The above is only a preferred embodiment of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A processing device for disposable plastic-substitute paper bags, comprising a paper conveyor belt (3), a feeding mechanism (4), and an edge sealing mechanism (5), characterized in that: The unloading mechanism (4) and the edge sealing mechanism (5) are both arranged above the paper conveyor belt (3), and a paper support plate (6) is provided at one end of the paper conveyor belt (3); The material discharge mechanism (4) comprises a material storage bin (41) with a hollow interior and a material discharge port (42) disposed at the bottom of the material storage bin (41) and opening toward the paper conveyor belt (3); An upper introduction roller (7) and a pressing roller (8) are provided in sequence between the unloading mechanism (4) and the edge sealing mechanism (5); a gap is provided between the pressing roller (8) and the paper conveyor belt (3) to allow the heat-insulating packaging paper (2) to pass through; The edge sealing mechanism (5) comprises the following structures: an edge sealing roller (51), edge sealing rollers (52) are provided at both ends of the edge sealing roller (51), the bottom of the edge sealing roller (52) is in contact with the surface of the paper conveyor belt (3), and a paper cutter (53), the paper cutter (53) is provided on the side of the edge sealing roller (51) away from the unloading mechanism (4), the blade of the paper cutter (53) faces the paper support plate (6), and edge sealing pressing plates (54) are provided on both sides of the paper cutter (53); The surface of the paper support plate (6) is provided with a paper cutting groove matching the paper cutter (53); The processing device is used for producing a disposable plastic-substitute paper bag, the disposable plastic-substitute paper bag comprising a packaging bag body (1), thermal insulation packaging paper (2), and a paper bag adhesive tape (11), the paper bag adhesive tape (11) being arranged at the edge of the thermal insulation packaging paper (2), the thermal insulation packaging paper (2) being folded and then being bonded and fixed to the edge of the thermal insulation packaging paper (2) by the paper bag adhesive tape (11) to form the packaging bag body (1), the packaging bag body (1) being hollow inside and forming a packaging space (12); The thermal insulation packaging paper (2) is composed of a plastic substitute paper layer, an inner interlayer (21), and a plastic substitute paper layer in sequence along the thickness direction; the plastic substitute paper layer is composed of a heat-sealing barrier layer (22), a base paper layer (23), and a heat-sealing barrier layer (22) in sequence along the thickness direction; the edges of the two plastic substitute paper layers are bonded and fixed by heating the heat-sealing barrier layer (22); and the inner interlayer (21) is filled with a plurality of thermal insulation particles.

2. The processing device for disposable plastic-substitute paper bags according to claim 1 is characterized in that: The heat-insulating particles are made of granular paraffin wax, and the phase transition temperature of the paraffin wax is 40-60°C.

3. The processing device for disposable plastic-substitute paper bags according to claim 1, characterized in that: The heat-insulating particles are composed of first reactive particles and second reactive particles. The first reactive particles are composed of water wrapped in paraffin on the surface, and the second reactive particles are composed of calcium oxide powder wrapped in paraffin on the surface.

4. The processing device for disposable plastic-substitute paper bags according to claim 3 is characterized in that: The mass ratio of the first reaction particles to the second reaction particles in the thermal insulation particles is 1:(1-2).

5. The processing device for disposable plastic-substitute paper bags according to claim 1, characterized in that: The inner interlayer (21) is provided with a plurality of separation strips (24) extending along opposite ends of the plastic substitute paper layer. The separation strips (24) are formed by heating the heat-sealed barrier layers (22) on both sides of the inner interlayer (21) and bonding them together. The heat-insulating particles are arranged between two adjacent separation strips (24) or between a separation strip (24) and an edge of the plastic substitute paper layer.

6. The processing device for disposable plastic-substitute paper bags according to claim 1, characterized in that: The base paper layer (23) is selected from one of wood pulp paper and kraft paper, and the gram weight of the base paper layer (23) is 40-100 gsm.

7. The processing device for disposable packaging plastic-substitute paper bags according to claim 1, characterized in that: A plurality of partition baffles (43) are provided at the bottom of the material storage bin (41), and the partition baffles (43) divide the material discharge opening (42) into a plurality of small material openings, and the position of the partition baffles (43) matches the partition strip (24).

8. The processing device for disposable plastic-substitute paper bags according to claim 1, characterized in that: A plurality of separating rollers (55) are provided on the surface of the edge sealing roller (51); the separating rollers (55) are arranged between two edge sealing rollers (52); the bottom of the separating rollers (55) abuts against the surface of the paper conveying belt (3); and the position at which the separating rollers (55) are arranged matches the separating belt (24).

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