Inflatable rubberized fabric and production method of life raft, and inflatable rubberized fabric

Abstract

The invention relates to the field of rubber product manufacturing, in particular to an inflatable adhesive tape which comprises the steps of manufacturing a cloth base material and pasting an adhesive material. The method comprises the following specific steps: pressing and sticking the adhesive sticking material on the upper surface and the lower surface of the cloth base material to form a raw adhesive tape; arranging an isolating layer on the upper surface of the raw adhesive tape according to a preset mode to form an isolating layer adhesive tape; and after another raw adhesive tape is flatly laid on the isolation layer, vulcanization treatment is carried out, and the inflatable adhesive tape is formed. According to the manufacturing method of the inflatable adhesive tape, the high-temperature-resistant isolation layer is arranged between the two layers of raw adhesive tapes, so that the raw adhesive tape areas without the isolation layer can be bonded, and the areas with the isolation layer are kept separated in the vulcanization process to form spaced inflatable air chambers.

Description

Technical Field

[0001] The invention relates to the field of rubber product manufacturing, in particular to an inflatable rubber plaster, a production method of a life raft, and the inflatable rubber plaster. Background Art

[0002] An inflatable life raft is a life-saving device that can sustain the lives of people in distress and can be automatically inflated after the ship is abandoned. According to the International Life Saving Appliance (LSA) Code, the bottom of the life raft should be a watertight structure and should have sufficient insulation to withstand the cold. This can be achieved by: using one or more compartments that can be inflated or automatically inflated by the occupants, and can also be deflated and re-inflated by the occupants; or using other equivalent facilities that do not rely on inflation.

[0003] At present, the inflatable bottom process adopted by life raft manufacturers at home and abroad is basically completed by partially bonding two layers of main body tape. Fig.11 As shown in the figure, in this process, glue needs to be applied to specific fixed positions of the two layers of tape, and dozens of pancake-shaped parts shown in the figure are pasted on the outsole, and then the two layers of tape are laminated by rolling. According to this process, each type of raft bottom must be equipped with a set of independent templates, and the entire operation process is relatively complicated. Therefore, there is an urgent need for a production process that can produce inflatable tape with a simple production process for manufacturing life rafts. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the current life raft production process, the present invention provides a method for producing an inflatable tape and a life raft, which can save the step of making different types of life raft bottom templates, avoid pasting a large number of cake-like components, reduce the use of treatment agents and glue, simplify the production process, reduce production costs, and reduce environmental pollution.

[0005] To achieve the above object, the embodiments of the present invention adopt the following technical solutions: A method for producing an inflatable adhesive tape includes preparing a cloth substrate and applying an adhesive material; the specific steps are as follows: Pressing the adhesive material onto the upper and lower surfaces of the cloth substrate to form a raw rubber cloth; Arranging an isolation layer on the upper surface of the raw rubber tape in a preset manner to form an isolation layer rubber tape; Another raw rubber tape is laid flat on the isolation layer and then vulcanized to form an inflatable rubber tape.

[0006] According to one aspect of the present invention, the isolation layer is made of high temperature resistant isolation paper.

[0007] According to one aspect of the present invention, the preset manner includes arranging the isolation layer at preset intervals or arranging the isolation layer into a preset shape.

[0008] According to one aspect of the present invention, before the adhesive is pressed onto the upper and lower surfaces of the fabric substrate, the polyester fabric substrate is subjected to a slurry impregnation treatment.

[0009] According to one aspect of the present invention, the vulcanization process is performed using a flat belt drum vulcanizer.

[0010] According to one aspect of the present invention, a calender is used to press the adhesive material onto the upper and lower surfaces of the fabric substrate.

[0011] According to one aspect of the present invention, the cloth base material is made of high-strength polyester cloth.

[0012] A method for producing a life raft includes preparing a polyester cloth substrate and applying a rubber material; the specific steps are as follows: Performing a slurry impregnation treatment on the polyester fabric substrate; Pressing the adhesive material onto the upper and lower surfaces of the polyester cloth substrate to form a raw rubber cloth; The high temperature resistant isolation paper is arranged on the upper surface of the raw rubber tape in a preset manner to form an isolation paper rubber tape; After laying another raw rubber tape flat on the release paper, vulcanizing it to form an inflatable rubber tape; The inflatable tape is cut and the inlet and outlet valves are arranged at the preset positions, and then the inflatable tape is spliced ​​to form the bottom of the life raft; The main body tape is cut and spliced ​​to form a buoyancy tire and / or a canopy column, and the buoyancy tire is bonded or heat-sealed around the bottom of the life raft to form a raft body; bonding or heat-sealing the masts to the raft body; The tent cloth is cut and spliced ​​to form a tent of a preset shape and the tent is connected to the tent poles to form a life raft.

[0013] According to one aspect of the present invention, at least one inlet and outlet valve is provided on each cut inflatable adhesive tape.

[0014] According to one aspect of the present invention, the bottom of the life raft is tested for air tightness; the buoyancy tube is tested for air tightness before the raft body is connected; and the life raft is tested for air tightness.

[0015] According to one aspect of the present invention, the preset manner includes arranging the high temperature resistant release paper at preset intervals or arranging the high temperature resistant release paper into a preset shape.

[0016] An inflatable rubber tape comprises an isolation layer and two layers of raw rubber tape, wherein the isolation layer is arranged between the two layers of raw rubber tape in a preset manner and then subjected to vulcanization treatment, and the raw rubber tape comprises a cloth base material and adhesive tapes arranged on the upper and lower surfaces of the cloth base material.

[0017] The advantages of the implementation of the present invention are as follows: by setting a high temperature resistant isolation layer between two layers of raw rubber tape, it is ensured that during the vulcanization process, the raw rubber tape area without the isolation layer can be bonded, while the area with the isolation layer remains separated to form an inflatable air chamber. This innovation eliminates the step of making different types of life raft bottom samples, and at the same time avoids the pasting operation of dozens of raft bottom cake-like parts in the production of traditional life raft bottoms, reducing the use of treatment agents and glue. This not only simplifies the production process and reduces production costs, but also helps to reduce environmental pollution. The life raft bottom made of inflatable rubber tape not only has a simpler process flow, but also has better air tightness, and the size of the air chamber can be flexibly adjusted according to specific needs. By using a four-roll calender to press and paste the rubber material, the continuous production of raw rubber tape can be achieved, the production efficiency is improved, and the degree of automation is high. By using a flat tape drum vulcanizer for vulcanization treatment, continuous production can be achieved, the production efficiency is improved, and the inflatable rubber tape after vulcanization has a high surface finish and uniform thickness, avoiding joint defects. By slurrying the cloth substrate, a transition layer can be formed on the surface of the polyester cloth, so that the adhesive material can be more smoothly, evenly and tightly combined with the cloth substrate, thereby improving the bonding strength between the adhesive material and the cloth substrate, and ensuring the overall performance and stability of the product. At the same time, the slurrying treatment can form a protective barrier for the cloth substrate, improve the water resistance, flexibility and protective performance of the cloth substrate, etc. The inflatable adhesive tape production method described in the present invention can produce an inflatable adhesive tape directly having an inflatable air chamber, so that it is suitable for the production of various products with air chamber requirements, and can flexibly adjust the air chamber size according to actual needs, ensuring the consistency of the air chamber size and good air tightness, and is suitable for a variety of different use environments. The method for making a life raft provided by the present invention can save the steps of making a life raft bottom template of all models, avoid pasting a large number of cake-like components, reduce the use of treatment agents and glue, simplify the production process, reduce production costs, and reduce environmental pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 This is a flow chart of a method for producing an inflatable adhesive tape according to the present invention; Figure 2This is a flow chart of a method for producing a life raft according to the present invention; Figure 3 It is a schematic structural diagram of a raw rubber tape in an inflatable rubber tape according to the present invention; Figure 4 It is a structural schematic diagram of an inflatable adhesive tape according to the present invention; Figure 5 A schematic diagram of the placement of an isolation layer in an inflatable adhesive tape according to the present invention; Figure 6 A schematic diagram of an inflatable adhesive tape according to the present invention in an inflated state; Figure 7 A schematic diagram of a production process of an inflatable rubber tape according to the present invention using a four-roll calender; Figure 8 A schematic diagram of a production process of an inflatable adhesive tape according to the present invention using a flat tape drum vulcanizer for vulcanization; Fig. 9 This is a schematic diagram of the life raft bottom structure of the present invention; Fig.10 A schematic diagram of the gas flow direction when the life raft bottom is inflated according to the present invention; Fig.11 It is a schematic diagram of the raft bottom structure in the prior art described in the present invention.

[0020] The names corresponding to the serial numbers in the figure are as follows: 1. Adhesive material; 2. Cloth substrate; 3. Isolation layer; 4. Inlet and exhaust valves. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Embodiment 1:

[0023] like Figure 3 , Figure 4 and Figure 5As shown, an inflatable tape is generally used for the production of products requiring air chambers, and is particularly suitable for the production of life-saving products, such as life rafts. It includes a cloth base material 2, an isolation layer 3 and two layers of raw tape, the isolation layer 3 is arranged between the two layers of raw tape in a preset manner, and then vulcanized, and the raw tape includes a rubber material 1 pressed on the upper and lower surfaces of the cloth base material 2. The cloth base material 2 can be polyester cloth, nylon cloth, aramid cloth, etc. Preferably, high-strength polyester cloth is used.

[0024] The isolation layer 3 is made of high temperature resistant isolation paper to ensure that the two layers of raw rubber tape will not stick together during the subsequent vulcanization process. The preset method includes setting the isolation layer 3 at a preset interval or setting the isolation layer 3 into a preset shape and then laying it flat between the two layers of raw rubber tape. The preset shape can be continuously connected in the form of interval distribution by a circle, square, oval, special shape, etc., that is, the high temperature resistant isolation paper can be placed in strips of isolation paper at intervals according to the requirements of the inflatable air chamber, or a larger isolation paper can be used, cut into a preset shape according to the requirements of the inflatable air chamber, and then laid flat on the upper surface of the raw rubber tape. Different product application scenarios have different requirements for their shape and size. Setting the isolation layer according to the preset shape can flexibly and accurately plan the distribution and size of the inflatable air chamber according to actual use requirements. For example, in the production of a life raft, the isolation layer can be designed into a specific shape according to its overall structure and buoyancy requirements, so that the air chamber distribution is more reasonable, thereby effectively improving the buoyancy performance and stability of the life raft.

[0025] Advantages of this embodiment: By setting a high temperature resistant isolation layer between two layers of raw rubber tape, it is ensured that during the vulcanization process, the raw rubber tape area without the isolation layer can be bonded, while the area with the isolation layer remains separated to form an inflatable air chamber. By setting the isolation paper in a preset shape or preset interval, the distribution of the isolation layer can be accurately controlled, and the structure of the inflatable air chamber can be better controlled. The inflatable tape of the present invention allows the size of the air chamber to be flexibly adjusted according to actual needs, ensuring the consistency of the size of the air chamber and good air tightness, and is suitable for a variety of different use environments.

[0026] Embodiment 2:

[0027] like Figure 1 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, an inflatable adhesive tape is mainly used for the production of products requiring air chambers, and is particularly suitable for the production of life-saving products, such as life rafts. A production method of an inflatable adhesive tape, the specific steps are as follows: Step S1: preparing a cloth substrate and applying adhesive; The cloth substrate is cut according to a preset size. The cloth substrate can be polyester cloth, nylon cloth, aramid cloth, etc., and high-strength polyester cloth is preferably used.

[0028] The specific steps for making adhesive paste are: Weighing: weigh the raw rubber and various compounding agents according to the formula. The raw rubber can be natural rubber or synthetic rubber, and the compounding agents can be one or more of vulcanizing agents, antioxidants, accelerators, activators, etc.

[0029] Plasticizing: Plasticize the standard rubber according to the process requirements.

[0030] Mixing and refining: Mix the rubber in the formula according to the proportion and process requirements.

[0031] Mixing: According to the process requirements, add the compounding ingredients except the fine materials in the formula into the mixed rubber.

[0032] Rubber filtering: According to the process requirements, use a suitable filter to filter the mixed rubber.

[0033] Add fine material: According to the process requirements, add fine material into the filtered rubber mixture and produce sheets.

[0034] Step S2: pressing the adhesive material onto the upper and lower surfaces of the cloth substrate to form a raw rubber tape; After the cloth substrate is impregnated with slurry, the adhesive material is pressed by a four-roll calender. On the upper and lower surfaces of the cloth substrate, a raw rubber tape is formed. The working process of the four-roll calender is as follows Figure 7 As shown, the cloth substrate is released from the cloth rack and passes through the tension roller. The tension roller applies tension to the cloth substrate to keep it flat. The rubber material is transported to the designated position and meets the cloth substrate after passing through the tension roller at the pressure roller. Under the action of the pressure roller, the rubber material is pressed to the upper and lower surfaces of the cloth substrate to achieve the compounding of the two. The compounded material continues to move forward, passes through the lining rack, and then passes through the isolation roller, which plays the role of isolation. Finally, the winding device winds up the processed material.

[0035] Step S3: Arranging an isolation layer on the upper surface of the raw rubber tape in a preset manner to form an isolation layer rubber tape; like Figure 5 As shown, an isolation layer is arranged on the upper surface of the raw rubber tape in a preset manner, and the isolation layer The separation layer uses high temperature resistant isolation paper to ensure that the two layers of raw rubber tape will not stick together during the subsequent vulcanization process. The preset method includes setting the isolation paper at preset intervals or setting the isolation paper into a preset shape and then laying it flat on the upper surface of the raw rubber tape. The preset shape can be continuously connected in the form of interval distribution by round, square, oval, special shape, etc., that is, the high temperature resistant isolation paper can be placed in strips according to the requirements of the inflatable air chamber, or a larger isolation paper can be used. After being cut into a preset shape according to the requirements of the inflatable air chamber, it is laid flat on the upper surface of the raw rubber tape. Different product application scenarios have different requirements for their shape and size. Setting the isolation layer according to the preset shape can flexibly and accurately plan the distribution and size of the inflatable air chamber according to actual use needs. For example, in the production of a life raft, the isolation layer can be designed into a specific shape according to its overall structure and buoyancy requirements, so that the air chamber distribution is more reasonable, thereby effectively improving the buoyancy performance and stability of the life raft. The release paper is also rolled into a roll. During the laying process, it is guided by guide rollers to lay it smoothly on the raw rubber tape, and the continuous supply of materials is achieved through the winding roller, thus facilitating continuous production.

[0036] Step S4: After another raw rubber tape is laid flat on the isolation layer, vulcanization treatment is performed to form an inflatable rubber tape.

[0037] After another raw rubber tape is laid flat on the isolation layer, it is vulcanized using a flat tape drum vulcanizer to form an inflatable rubber tape. Figure 8 In order to adopt the specific production process of the flat belt drum vulcanizer, two layers of raw rubber tape are respectively released from the lining cloth winding place, and after being guided by the guide roller, an isolation layer is placed on one layer of the raw rubber tape according to the preset method, and the other raw rubber tape is laid on the isolation layer. The three enter the vulcanizer together for vulcanization treatment. After the treatment, the inflatable rubber tape is finally wound up under the guidance of another guide roller, so that it can be directly cut and used when the life raft is needed in the future.

[0038] like Figure 6 As shown, the tape where the high-temperature isolation paper is placed isolates the two layers of raw tape during vulcanization to form an inflatable air chamber, while in the position where the isolation paper is not placed, the adhesive materials on the two layers of raw tape are bonded together during the vulcanization process to form a sealed channel.

[0039] The advantages of this embodiment are: by setting a high temperature resistant isolation layer between two layers of raw rubber tape, the adhesive material of the raw rubber tape can be prevented from sticking during the vulcanization process, and an inflatable air chamber with a preset interval can be formed. By setting the isolation paper according to a preset shape or preset interval, the distribution of the isolation layer can be accurately controlled, and the structure of the inflatable air chamber can be better controlled. This innovative technology avoids the cumbersome steps of making different models of samples for the subsequent production of life raft bottoms, and at the same time avoids the pasting operation of dozens of raft bottom cake-like parts in the production of traditional inflatable raft bottoms, significantly reducing the use of treatment agents and glue. This not only simplifies the production process and reduces production costs, but also helps to reduce environmental pollution. By using a four-roll calender to press the adhesive material, the continuous production of raw rubber tape can be achieved, the production efficiency is improved, and the degree of automation is high. By using a flat tape drum vulcanizer for vulcanization treatment, continuous production can be achieved, the production efficiency is improved, and the inflatable tape after vulcanization has a high surface finish and uniform thickness, avoiding joint defects. The inflatable tape produced by coating the upper and lower surfaces of the polyester cloth with adhesive materials that meet the requirements complies with the requirements of relevant international laws and regulations.

[0040] Embodiment 3:

[0041] The difference between this embodiment and the first embodiment is that, in this embodiment, before the adhesive material is pressed onto the upper and lower surfaces of the cloth substrate, the cloth substrate is impregnated with slurry.

[0042] The advantage of this embodiment is that a transition layer can be formed on the surface of the fabric substrate by slurry treatment of the fabric substrate, so that the adhesive material can be more smoothly, evenly and tightly combined with the fabric substrate, thereby improving the bonding strength between the adhesive material and the fabric substrate, ensuring the overall performance and stability of the product. At the same time, the slurry treatment can form a protective barrier on the fabric substrate, improving the water resistance, flexibility and protective performance of the fabric substrate.

[0043] Embodiment 4:

[0044] like Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, a method for producing a life raft, the specific steps are as follows: Step S1: preparing polyester cloth substrate and adhesive material; The polyester cloth is cut according to a preset size, and the polyester cloth is a high-strength polyester cloth.

[0045] The specific steps for making adhesive paste are: 1. Weighing: Weigh the raw rubber and various compounding agents according to the formula. The raw rubber can be natural rubber or synthetic rubber, and the compounding agents can be one or more of vulcanizing agents, antioxidants, accelerators, activators, etc.

[0046] 2. Plasticizing: Plasticize the standard rubber according to the process requirements.

[0047] 3. Mixing and refining: Mix the rubber in the formula according to the proportion and process requirements.

[0048] 4. Mixing: According to the process requirements, add the compounding agents except the fine materials in the formula into the mixed rubber.

[0049] 5. Rubber filtering: According to the process requirements, use a suitable filter to filter the mixed rubber.

[0050] 6. Add fine material: According to the process requirements, add the fine material into the filtered rubber mixture and produce sheets.

[0051] Step S2: performing slurry treatment on the polyester fabric substrate.

[0052] The polyester fabric is treated with sizing to form a transition layer on the surface of the polyester fabric, so that the subsequent adhesive material can be more smoothly, evenly and tightly combined with the polyester fabric, thereby improving the bonding strength between the adhesive material and the polyester fabric and ensuring the overall performance and stability of the product. At the same time, the sizing treatment can form a protective barrier for the polyester fabric, improving the water resistance, flexibility and protective performance of the polyester fabric.

[0053] Step S3: pressing the adhesive material onto the upper and lower surfaces of the polyester fabric substrate to form a raw rubber tape; After the polyester fabric is impregnated with slurry, the adhesive material is pressed onto the upper and lower surfaces of the polyester fabric using a four-roll calender to form a raw rubber fabric. Figure 7 As shown in the figure, the polyester cloth is released from the cloth rack and passes through the tension roller. The tension roller applies tension to the polyester cloth to keep it flat. The rubber material is transported to the designated position and meets the polyester cloth after passing through the tension roller at the pressure roller. Under the action of the pressure roller, the rubber material is pressed onto the polyester cloth to achieve the compounding of the two. The compounded material continues to move forward, passes through the lining cloth rack, and then passes through the isolation roller, which plays the role of isolation. Finally, the winding device winds up the processed material.

[0054] Step S4: placing release paper on the upper surface of the raw tape in a preset manner to form a release paper tape; like Figure 5As shown, the upper surface of the raw rubber tape is provided with a release paper in a preset manner, and the release paper is a high temperature resistant release paper to ensure that the two layers of raw rubber tape will not stick together during the subsequent vulcanization process. The preset manner includes setting the release paper at a preset interval or setting the release paper into a preset shape and then laying it flat on the upper surface of the raw rubber tape. That is, the high temperature resistant release paper can be placed in strips of release paper at intervals according to the requirements of the inflatable air chamber, or a larger release paper can be used, cut into a preset shape according to the requirements of the inflatable air chamber, and then laid flat on the upper surface of the raw rubber tape. The preset shape can be continuously connected in the form of interval distribution by round, square, oval, special shape, etc. Different product application scenarios have different requirements for their shape and size. Setting the release layer in a preset shape can flexibly and accurately plan the distribution and size of the inflatable air chamber according to actual use requirements. For example, in the production of a life raft, the release layer can be designed into a specific shape according to its overall structure and buoyancy requirements, so that the air chamber distribution is more reasonable, thereby effectively improving the buoyancy performance and stability of the life raft. The release paper is also rolled into a roll. During the laying process, it is guided by guide rollers to lay it smoothly on the raw rubber tape, and the continuous supply of materials is achieved through the winding roller, thus facilitating continuous production.

[0055] Step S5: After laying another raw tape on the release paper tape, vulcanization treatment is performed to form an inflatable tape.

[0056] After another raw rubber tape is laid flat on the release paper tape, it is vulcanized using a flat tape drum vulcanizer to form an inflatable tape. Figure 8 As shown in the figure, it is a specific production process using a flat tape drum vulcanizer. Two layers of raw rubber tape are released from the lining cloth reel respectively. After being guided by the guide roller, a release paper is placed on one of the layers of raw rubber tape in a preset manner. Then, the three layers enter the vulcanizer together for vulcanization treatment. After the treatment, the inflatable rubber tape is finally reeled up through the guidance of another guide roller, so that it can be directly cut and used when a life raft is needed later.

[0057] like Figure 6 As shown, the tape where the high-temperature isolation paper is placed isolates the two layers of raw tape during vulcanization to form an inflatable air chamber, while in the position where the isolation paper is not placed, the adhesive materials on the two layers of raw tape are bonded together during the vulcanization process to form a sealed channel.

[0058] Step S6: After cutting the inflatable tape and setting the inlet and outlet valves at the preset positions, the inflatable tape is spliced ​​to form the life raft bottom; The inflatable tape is trimmed according to the shape of the life raft bottom, and spliced ​​according to the shape requirements of the life raft bottom. The splicing can be carried out by rubber adhesive, high temperature vulcanization or heat sealing by high frequency heat sealing machine. Fig. 9As shown, at least one inlet and outlet valve is provided on each inflatable rubber plaster to form a life-saving valve bottom. Fig.10 As shown, when the life raft body is inflated, the gas flows in the air chamber provided with the isolation paper until the gas in the bottom of the life raft is filled.

[0059] Step S7: cutting and splicing the main body tape to make a buoyancy tire and / or a canopy column, and surrounding the buoyancy tire along the bottom of the life raft by gluing or heat-sealing to form a raft body; The main body tape is cut and spliced ​​to form a float and / or a canopy column, the float and / or the canopy column are provided with an inlet and outlet valve, and the float is bonded or heat-sealed around the bottom of the life raft to form a raft body. The bonding can be performed by an adhesive, and the heat-sealing can be performed by high-temperature vulcanization or a high-frequency heat-sealing machine.

[0060] Step S8: bonding or heat-sealing the tent poles to the raft body; Step S9: cutting and splicing the tent cloth to form a tent of a preset shape and connecting the tent to the tent poles to form a life raft.

[0061] Advantages of this embodiment: By coating the upper and lower surfaces of the cloth substrate with adhesive, the inflatable tape made with such a cloth substrate meets the requirements of relevant international laws and regulations. By providing high temperature resistant isolation paper between the two layers of raw tape, the adhesive of the raw tape can be prevented from sticking during the vulcanization process to form an inflatable air chamber. This innovation eliminates the step of making different types of life raft bottom samples, while avoiding the pasting operation of dozens of raft bottom cake-like components in the production of traditional inflatable raft bottoms, and reduces the use of treatment agents and glue. This not only simplifies the production process and reduces production costs, but also helps to reduce environmental pollution. The life raft bottom made of inflatable tape not only has a simpler process flow, but also better air tightness, and the size of the air chamber can be flexibly adjusted according to specific needs.

[0062] Embodiment 5:

[0063] like Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, a method for producing a life raft is shown, and a 4×4 meter polygonal life raft is made of a 1 meter wide tape as an example. The specific steps are as follows: Step S1: preparing polyester cloth substrate and adhesive material; The polyester cloth is cut according to a preset size, that is, the polyester cloth is cut into polyester cloth with a width of 1 meter, and the polyester cloth is made of high-strength polyester cloth.

[0064] The specific steps for making adhesive paste are: 1. Weighing: Weigh the raw rubber and various compounding agents according to the formula. The raw rubber can be natural rubber or synthetic rubber, and the compounding agents can be one or more of vulcanizing agents, antioxidants, accelerators, activators, etc.

[0065] 2. Plasticizing: Plasticize the standard rubber according to the process requirements.

[0066] 3. Mixing and refining: Mix the rubber in the formula according to the proportion and process requirements.

[0067] 4. Mixing: According to the process requirements, add the compounding agents except the fine materials in the formula into the mixed rubber.

[0068] 5. Rubber filtering: According to the process requirements, use a suitable filter to filter the mixed rubber.

[0069] 6. Add fine material: According to the process requirements, add the fine material into the filtered rubber mixture and produce sheets.

[0070] Step S2: performing slurry treatment on the polyester fabric substrate.

[0071] The polyester cloth with a width of 1 meter is impregnated with slurry.

[0072] Step S3: pressing the adhesive material onto the upper and lower surfaces of the polyester fabric substrate to form a raw rubber tape; After the polyester fabric is impregnated with slurry, the adhesive material is pressed onto the upper and lower surfaces of the polyester fabric using a four-roll calender to form a raw rubber fabric. Figure 7 As shown in the figure, the polyester cloth is released from the cloth rack and passes through the tension roller. The tension roller applies tension to the polyester cloth to keep it flat. The rubber material is transported to the designated position and meets the polyester cloth after passing through the tension roller at the pressure roller. Under the action of the pressure roller, the rubber material is pressed onto the polyester cloth to achieve the compounding of the two. The compounded material continues to move forward, passes through the lining cloth rack, and then passes through the isolation roller, which plays the role of isolation. Finally, the winding device winds up the processed material.

[0073] Step S4: placing release paper on the upper surface of the raw tape in a preset manner to form a release paper tape; like Figure 5As shown, a release paper is arranged on the upper surface of the raw rubber tape in a preset manner, and the release paper adopts a high temperature resistant release paper to ensure that the two layers of raw rubber tape will not stick together during the subsequent vulcanization process. The preset method includes arranging the release paper at a preset interval or arranging the release paper into a preset shape and then laying it flat on the upper surface of the raw rubber tape. That is, the high temperature resistant release paper can be arranged in strips of release paper at intervals according to the requirements of the inflatable air chamber, or a larger release paper can be used, cut into a preset shape according to the requirements of the inflatable air chamber, and then laid flat on the upper surface of the raw rubber tape. The preset shape can be continuously connected in the form of interval distribution by a circle, a square, an oval, a special shape, etc. Different product application scenarios have different requirements for their shape and size. Arranging the isolation layer in a preset shape can flexibly and accurately plan the distribution and size of the inflatable air chamber according to actual use requirements. For example, in the production of a life raft, the isolation layer can be designed into a specific shape according to its overall structure and buoyancy requirements, so that the air chamber distribution is more reasonable, thereby effectively improving the buoyancy performance and stability of the life raft. The release paper is also rolled into a roll. During the laying process, it is guided by guide rollers to lay it smoothly on the raw rubber tape, and the continuous supply of materials is achieved through the winding roller, thus facilitating continuous production.

[0074] Step S5: After laying another raw tape on the release paper tape, vulcanization treatment is performed to form an inflatable tape.

[0075] After another raw rubber tape is laid flat on the release paper tape, it is vulcanized using a flat tape drum vulcanizer to form an inflatable tape. Figure 8 As shown in the figure, it is a specific production process using a flat tape drum vulcanizer. Two layers of raw rubber tape are released from the lining cloth reel respectively. After being guided by the guide roller, a release paper is placed on one of the layers of raw rubber tape in a preset manner. Then, the three layers enter the vulcanizer together for vulcanization treatment. After the treatment, the inflatable rubber tape is finally reeled up through the guidance of another guide roller, so that it can be directly cut and used when a life raft is needed later.

[0076] like Figure 6 As shown, the tape where the high-temperature isolation paper is placed isolates the two layers of raw tape during vulcanization to form an inflatable air chamber, while in the position where the isolation paper is not placed, the adhesive materials on the two layers of raw tape are bonded together during the vulcanization process to form a sealed channel.

[0077] Step S5: cutting the inflatable tape and splicing the inflatable tape after setting the inlet and outlet valves at the preset positions to form the life raft bottom; Cut the 1-meter-wide inflatable tape into 4 pieces and trim them according to the shape of the life raft bottom. Splice the 4 cut inflatable tapes according to the shape of the life raft bottom. The splicing can be carried out by rubber adhesive, high-temperature vulcanization or heat sealing by high-frequency heat sealing machine. Fig. 9As shown, at least one inlet and outlet valve is provided on each inflatable rubber plaster to form a life-saving valve bottom. Fig.10 As shown, when the life raft body is inflated, the gas flows in the air chamber provided with the isolation paper until the gas in the bottom of the life raft is filled.

[0078] Step S6: performing air tightness test on the bottom of the life raft; After the life raft bottom is inflated, a pressure gauge should be connected to an inlet and outlet valve on each inflatable tape to detect the air pressure inside the life raft bottom, and the gas pressure should be maintained for 30 minutes. If the pressure remains stable or decreases by no more than 3%, it is considered normal. If the pressure decreases by more than 3%, the leak must be checked and repaired.

[0079] Step S7: cutting and splicing the main adhesive tape to make a floating tire and / or a canopy column, and performing an air tightness test on the floating tire and / or the canopy column; The main body tape is cut and spliced ​​to make a float and / or a canopy column. The float and / or the canopy column are provided with an inlet and outlet valve. The float and / or the canopy column are inflated, and a pressure gauge is connected to the inlet and outlet valve of the float and / or the canopy column to detect the air pressure in the float and / or the canopy column. After maintaining the gas pressure for 30 minutes, if the pressure remains stable or the decrease does not exceed 3%, it is considered normal. If the pressure decreases by more than 3%, the leak point must be checked and repaired.

[0080] Step S8: bonding or heat-sealing the buoyancy tire around the bottom of the life raft to form a raft body; The buoyancy tire is bonded or heat-sealed around the bottom of the life raft to form a raft body. The bonding can be performed by using an adhesive, and the heat-sealing can be performed by high-temperature vulcanization or a high-frequency heat-sealing machine.

[0081] Step S9: bonding or heat-sealing the tent poles to the raft body; Step S10: cutting and splicing the tent cloth to form a tent of a preset shape and connecting the tent with the tent poles to form a life raft.

[0082] Step S11: performing air tightness test on the life raft.

[0083] After the life raft is inflated, a pressure gauge is set on the inlet and outlet valves to detect the air pressure in the life raft, and after maintaining the gas pressure for 30 minutes, if the pressure remains stable or the decrease does not exceed 3%, it is considered normal. If the pressure decreases by more than 3%, the leak must be checked and repaired.

[0084] The advantages of this embodiment are as follows: by detecting the air tightness of the life raft bottom, buoyancy, canopy columns and the entire life raft, leakage points can be discovered in time and repaired in time, thereby reducing losses and improving the performance of lifesaving products.

[0085] The advantages of the implementation of the present invention are as follows: by setting a high temperature resistant isolation paper between two layers of raw rubber tape, it is ensured that during the vulcanization process, the raw rubber tape area without isolation paper can be bonded, while the area with isolation paper remains separated to form an inflatable air chamber. This innovation eliminates the step of making different types of life raft bottom samples, and at the same time avoids the pasting operation of dozens of raft bottom cake-like parts in the production of traditional life raft bottoms, reducing the use of treatment agents and glue. This not only simplifies the production process and reduces production costs, but also helps to reduce environmental pollution. The life raft bottom made of inflatable rubber tape not only has a simpler process flow, but also better air tightness, and the size of the air chamber can be flexibly adjusted according to specific needs. By using a four-roll calender to press and paste the rubber material, the continuous production of raw rubber tape can be achieved, the production efficiency is improved, and the degree of automation is high. By using a flat tape drum vulcanizer for vulcanization treatment, continuous production can be achieved, the production efficiency is improved, and the inflatable rubber tape after vulcanization has a high surface finish and uniform thickness, avoiding joint defects. By slurrying the polyester cloth substrate, a transition layer can be formed on the surface of the polyester cloth, so that the adhesive material can be more smoothly, evenly and tightly combined with the polyester cloth, thereby improving the bonding strength between the adhesive material and the polyester cloth, and ensuring the overall performance and stability of the product. At the same time, the slurrying treatment can make the polyester cloth form a protective barrier, improve the water resistance, flexibility and protective performance of the polyester cloth. The inflatable adhesive tape production method described in the present invention can produce an inflatable adhesive tape directly having an inflatable air chamber, so that it is suitable for the production of various products with air chamber requirements, and can flexibly adjust the air chamber size according to actual needs, ensuring the consistency of the air chamber size and good air tightness, and is suitable for a variety of different use environments. The life raft production method provided by the present invention can save the steps of making life raft bottom templates of all models, avoid pasting a large number of cake-like components, reduce the use of treatment agents and glue, simplify the production process, reduce production costs, and reduce environmental pollution.

[0086] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the art within the technical scope disclosed in the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A method for producing an inflatable adhesive tape, comprising making a cloth substrate and applying an adhesive material; characterized in that: The specific steps are as follows: Pressing the adhesive material onto the upper and lower surfaces of the cloth substrate to form a raw rubber cloth; An isolation layer is arranged on the upper surface of the raw rubber tape in a preset manner to form an isolation layer rubber tape; the isolation layer is made of high temperature resistant isolation paper; the preset manner includes arranging the isolation layer at a preset interval or arranging the isolation layer into a preset shape; Another raw rubber tape is laid flat on the isolation layer and then vulcanized to form an inflatable rubber tape.

2. The method for producing an inflatable adhesive tape according to claim 1, characterized in that: Before the adhesive is pressed onto the upper and lower surfaces of the cloth substrate, the cloth substrate is impregnated with slurry.

3. The method for producing an inflatable adhesive tape according to claim 1, characterized in that: The vulcanization treatment is carried out using a flat belt drum vulcanizer.

4. The method for producing an inflatable adhesive tape according to claim 1, characterized in that: The adhesive material is pressed onto the upper and lower surfaces of the cloth substrate by using a calender.

5. The method for producing an inflatable adhesive tape according to claim 1, characterized in that: The cloth base material is made of high-strength polyester cloth.

6. A method for producing a life raft, comprising making a polyester cloth substrate and applying a rubber material; characterized in that: The specific steps are as follows: Performing a slurry impregnation treatment on the polyester fabric substrate; Pressing the adhesive material onto the upper and lower surfaces of the polyester cloth substrate to form a raw rubber cloth; Arranging the high temperature resistant release paper on the upper surface of the raw rubber tape in a preset manner to form a release paper rubber tape; After laying another raw rubber tape flat on the release paper rubber tape, vulcanizing it to form an inflatable rubber tape; The inflatable tape is cut and the inlet and outlet valves are arranged at the preset positions, and then the inflatable tape is spliced ​​to form the bottom of the life raft; The main body tape is cut and spliced ​​to form a buoyancy tire and / or a canopy column, and the buoyancy tire is bonded or heat-sealed around the bottom of the life raft to form a raft body; bonding or heat-sealing the masts to the raft body; The tent cloth is cut and spliced ​​to form a tent of a preset shape and the tent is connected to the tent poles to form a life raft.

7. The method for producing a life raft according to claim 6, characterized in that: At least one inlet and outlet valve is arranged on each cut inflatable adhesive tape.

8. The method for producing a life raft according to claim 7, characterized in that: Perform an air tightness test on the bottom of the life raft; perform an air tightness test on the buoyancy tube before connecting the raft body; perform an air tightness test on the life raft.

9. The method for producing a life raft according to claim 6, characterized in that: The preset manner includes arranging the high temperature resistant isolation paper at preset intervals or arranging the high temperature resistant isolation paper into a preset shape.

10. An inflatable adhesive plaster, characterized in that: It comprises an isolation layer and two layers of raw rubber tape, wherein the isolation layer is arranged between the two layers of raw rubber tape in a preset manner and then subjected to vulcanization treatment, the raw rubber tape comprises a cloth base material and adhesives arranged on the upper and lower surfaces of the cloth base material, the isolation layer adopts high temperature resistant isolation paper, and the preset manner comprises arranging the isolation layer at a preset interval or arranging the isolation layer into a preset shape.

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