An inflatable bandage

By using a high-temperature resistant insulating layer and a flat-belt drum vulcanizing machine in the manufacture of life rafts, the complex problem of making the inflatable bottom of life rafts has been solved, achieving air chamber consistency and efficient production, suitable for various environments.

CN224296769UActive Publication Date: 2026-05-29SHANGHAI YOULONG RUBBER PRODS

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANGHAI YOULONG RUBBER PRODS
Filing Date
2025-03-28
Publication Date
2026-05-29

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Abstract

The utility model relates to material field especially, relates to a inflatable adhesive tape, still includes isolation layer and two layers of raw rubber cloth, the isolation layer is set according to preset mode between two layers of raw rubber cloth and carries out vulcanization treatment after, the raw rubber cloth includes cloth base material and the adhesive material that sets up on the upper and lower face surface of cloth base layer, a kind of inflatable adhesive tape provided by the utility model, by setting high-temperature-resistant isolation layer between two layers of raw rubber cloth, ensure that in vulcanization process, the raw rubber cloth area of not being set isolation layer can be bonded, and the area of setting isolation layer keeps apart, forms interval inflatable air chamber, and it is convenient for the production of various products of air chamber demand.
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Description

Technical Field

[0001] This utility model relates to the field of materials, and in particular to an inflatable adhesive tape. Background Technology

[0002] An inflatable life raft is a life-saving device that, after a ship is in distress, can sustain the lives of those in distress from the moment of abandonment and can automatically inflate to its designated shape. According to Clause 4.2.2.2 of Chapter IV of the International Life-Saving Equipment (LSA) Code, "The bottom of a life raft shall be watertight and shall be adequately insulated against cold, which may be achieved by means of one or more compartments that can be inflated or automatically inflated by the occupants, and also by means of facilities for deflation and re-inflation by the occupants; or by other equivalent facilities that do not rely on inflation."

[0003] Currently, the inflatable bottom manufacturing process used by various life raft manufacturers both domestically and internationally is basically completed by partially bonding two layers of main adhesive tape. For example... Figure 7 As shown, this process involves applying adhesive to specific locations on two layers of adhesive tape, then attaching dozens of disc-shaped components (as shown in the image) to the bottom. The two layers of tape are then bonded together using a roller press. Following this process, each type of raft bottom requires a separate template, making the entire operation quite complex. Therefore, there is an urgent need for an inflatable adhesive tape material for manufacturing life raft bottoms. Utility Model Content

[0004] In view of the above-mentioned shortcomings of current life raft bottom materials, this utility model provides an inflatable rubber sheet. By setting a high-temperature resistant isolation layer between two layers of raw rubber sheet, it is ensured that the raw rubber sheet area without the isolation layer can be bonded during the vulcanization process, while the area with the isolation layer remains separated, forming an intermittent inflatable air chamber, which facilitates the production of various products that require air chambers.

[0005] To achieve the above objectives, the embodiments of this utility model adopt the following technical solutions:

[0006] An inflatable rubber sheet further includes an isolation layer and two layers of raw rubber sheet. The isolation layer is set between the two layers of raw rubber sheet in a preset manner and then subjected to vulcanization treatment. The raw rubber sheet includes a fabric substrate and adhesive material applied to the upper and lower surfaces of the fabric substrate.

[0007] According to one aspect of this utility model, the material of the isolation layer is isolation paper.

[0008] According to one aspect of the present invention, the preset method includes placing the isolation layers at preset intervals.

[0009] According to one aspect of the present invention, the preset method includes setting the isolation layer into a preset shape.

[0010] According to one aspect of this utility model, the preset shape includes a continuous connection of circles, squares, or ellipses in an intermittent distribution.

[0011] According to one aspect of this utility model, the insulating paper is made of high-temperature resistant insulating paper.

[0012] According to one aspect of this utility model, the base layer is made of polyester fabric.

[0013] According to one aspect of this utility model, the vulcanization treatment is carried out using a flat belt drum vulcanizing machine.

[0014] The advantages of this utility model are as follows: By setting a high-temperature resistant isolation layer between two layers of raw rubber sheet, it ensures that during vulcanization, the areas of raw rubber sheet without the isolation layer can bond, while the areas with the isolation layer remain separated, forming intermittent inflatable chambers. This utility model provides an inflatable rubber sheet that allows for flexible adjustment of the chamber size according to actual needs, ensuring consistency in chamber size and good airtightness, making it suitable for various usage environments. Using a flat rubber belt drum vulcanizing machine enables continuous production, improving production efficiency. Furthermore, the vulcanized inflatable rubber sheet has a high surface smoothness and uniform thickness, avoiding joint defects. This utility model provides an inflatable rubber sheet that, by setting an isolation layer between two layers of raw rubber sheet, ensures that during vulcanization, the areas of raw rubber sheet without the isolation layer can bond, while the areas with the isolation layer remain separated, forming intermittent inflatable chambers. This facilitates the production of various products requiring air chambers. Using this inflatable rubber sheet to produce inflatable chamber products not only provides excellent airtightness but also simplifies and simplifies the production process. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of the raw rubber sheet in the inflatable rubber sheet of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of an inflatable adhesive tape according to the present invention;

[0018] Figure 3 This is a schematic diagram showing the placement of the isolation layer in an inflatable adhesive tape according to the present invention;

[0019] Figure 4 This is a schematic diagram of the inflatable adhesive tape of this utility model in its inflatable state.

[0020] Figure 5 This is a schematic diagram of the vulcanization process using a flat rubber belt drum vulcanizing machine in an inflatable rubber sheet according to the present invention.

[0021] Figure 6 The pre-defined shape of an insulating layer in an inflatable adhesive tape according to this utility model.

[0022] Figure 7 This is a schematic diagram of the raft bottom structure in the prior art described in this utility model.

[0023] The names corresponding to the serial numbers in the diagram are as follows:

[0024] 1. Apply adhesive; 2. Apply base layer; 3. Apply release layer. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are used only for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0028] Example 1

[0029] like Figure 1 , Figure 2 and Figure 3 As shown, an inflatable rubber sheet is generally used in the manufacture of products requiring air chambers, especially suitable for the production of life rafts. It includes a base fabric 2, an isolation layer 3, and two layers of raw rubber sheet. The isolation layer 3 is set between the two layers of raw rubber sheet in a predetermined manner and then subjected to vulcanization treatment. The raw rubber sheet includes an adhesive material 1 applied to the upper and lower surfaces of the base fabric 2. The base fabric 2 can be polyester, nylon, aramid, etc., preferably polyester.

[0030] The isolation layer 3 is made of high-temperature resistant release paper to ensure that the two layers of raw rubber sheeting do not stick together during the subsequent vulcanization process. The preset method includes setting the isolation layer 3 at preset intervals or setting the isolation layer 3 into a preset shape and then laying it flat between the two layers of raw rubber sheeting. The preset shape can be a continuous connection of circles, squares, ovals, irregular shapes, etc., in an intermittent distribution. That is, the high-temperature resistant release paper can be strips of release paper placed at intervals according to the requirements of the air chamber, or a larger release paper can be used, cut into a preset shape according to the requirements of the air chamber, and then laid flat on the upper surface of the raw rubber sheeting.

[0031] like Figure 4 As shown, the rubber sheet with the high-temperature isolation layer keeps the two layers of raw rubber sheet separated during vulcanization, forming an intermittent air chamber. In the position without the isolation layer, the adhesive on the two layers of raw rubber sheet sticks together during vulcanization, forming a sealed channel.

[0032] The advantages of this embodiment are: by embedding a high-temperature resistant insulating layer between two layers of raw rubber sheet, it is ensured that during the vulcanization process, the areas of raw rubber sheet without the insulating layer can bond together, while the areas with the insulating layer remain separated, forming spaced inflatable air chambers. This inflatable rubber sheet allows for flexible adjustment of the air chamber size according to actual needs, ensuring consistency in air chamber size and good airtightness, making it suitable for various different usage environments.

[0033] Example 2

[0034] like Figure 1 , Figure 2 and Figure 3 As shown, an inflatable rubber sheet is generally used in the manufacture of products requiring air chambers, especially suitable for the production of life rafts. It includes a base fabric 2, an isolation layer 3, and two layers of raw rubber sheet. The isolation layer 3 is set between the two layers of raw rubber sheet in a predetermined manner and then subjected to vulcanization treatment. The raw rubber sheet includes an adhesive material 1 applied to the upper and lower surfaces of the base fabric 2. The base fabric 2 can be polyester, nylon, aramid, etc., preferably polyester.

[0035] The isolation layer 3 is made of high-temperature resistant release paper to ensure that the two layers of raw rubber sheeting do not stick together during the subsequent vulcanization process. The preset method includes setting the isolation layer 3 at preset intervals or setting the isolation layer 3 into a preset shape and then laying it flat between the two layers of raw rubber sheeting. The preset shape can be a continuous connection of circles, squares, ovals, irregular shapes, etc., in an intermittent distribution. That is, the high-temperature resistant release paper can be strips of release paper placed at intervals according to the requirements of the air chamber, or a larger release paper can be used, cut into a preset shape according to the requirements of the air chamber, and then laid flat on the upper surface of the raw rubber sheeting.

[0036] like Figure 4 As shown, the rubber sheet with the high-temperature isolation layer keeps the two layers of raw rubber sheet separated during vulcanization, forming an intermittent air chamber. In the position without the isolation layer, the adhesive on the two layers of raw rubber sheet sticks together during vulcanization, forming a sealed channel.

[0037] In this embodiment, the isolation layer 3 is placed between the two layers of raw rubber sheet, and then vulcanized using a flat belt drum vulcanizing machine. For example... Figure 5 In the specific production process using a flat rubber belt drum vulcanizing machine, two layers of raw rubber sheet are released from the lining winding point. After being guided by guide rollers, an isolation layer is placed on the lower layer of raw rubber sheet according to a preset pattern, and then the upper layer of raw rubber sheet is laid on top of the isolation layer. All three layers enter the vulcanizing machine together for vulcanization. After processing, the inflatable rubber sheet is finally wound up by another guide roller, facilitating direct cutting and use when needed for making life raft bottoms or other air-chamber products. Using a flat rubber belt drum vulcanizing machine allows for simultaneous vulcanization of the entire piece of raw rubber sheet, thus avoiding the formation of joints.

[0038] The advantages of this embodiment are: by setting a high-temperature resistant isolation layer between two layers of raw rubber sheet, it is ensured that during the vulcanization process, the areas of raw rubber sheet without the isolation layer can bond together, while the areas with the isolation layer remain separated, forming spaced inflatable air chambers. This inflatable rubber sheet allows for flexible adjustment of the air chamber size according to actual needs, ensuring consistency in air chamber size and good airtightness, making it suitable for various different usage environments. Using a flat belt drum vulcanizing machine for vulcanization enables continuous production, improving production efficiency. Furthermore, the vulcanized inflatable rubber sheet has a high surface smoothness and uniform thickness, avoiding joint defects.

[0039] The advantages of this invention are as follows: By setting a high-temperature resistant isolation layer between two layers of raw rubber sheet, it ensures that during vulcanization, the areas of raw rubber sheet without the isolation layer can bond, while the areas with the isolation layer remain separated, forming spaced inflatable air chambers. This invention provides an inflatable rubber sheet that allows for flexible adjustment of the air chamber size according to actual needs, ensuring consistency in air chamber size and good airtightness, making it suitable for various usage environments. Using a flat rubber belt drum vulcanizing machine enables continuous production, improving production efficiency. The vulcanized inflatable rubber sheet has a high surface smoothness and uniform thickness, avoiding joint defects. This invention provides an inflatable rubber sheet that, by embedding an isolation layer between two layers of raw rubber sheet, ensures that during vulcanization, the areas of raw rubber sheet without the isolation layer can bond, while the areas with the isolation layer remain separated, forming spaced inflatable air chambers. This facilitates the production of various products requiring air chambers. Using this inflatable rubber sheet to produce air-chamber products not only provides excellent airtightness but also simplifies and simplifies the production process.

[0040] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. An inflatable adhesive tape, characterized in that, It includes an isolation layer (3) and two layers of raw rubber sheet. The isolation layer (3) is set between the two layers of raw rubber sheet in a preset manner and then vulcanized. The raw rubber sheet includes a base layer (2) and an adhesive material (1) set on the upper and lower surfaces of the base layer (2).

2. The inflatable adhesive tape according to claim 1, characterized in that, The material of the isolation layer (3) is isolation paper.

3. The inflatable adhesive tape according to claim 2, characterized in that, The preset method includes placing the isolation layer (3) at preset intervals.

4. The inflatable adhesive tape according to claim 2, characterized in that, The preset method includes setting the isolation layer (3) into a preset shape.

5. The inflatable adhesive tape according to claim 4, characterized in that, The preset shape includes a continuous connection of circles, squares, or ellipses in an intermittent distribution.

6. The inflatable adhesive tape according to claim 2, characterized in that, The insulating paper is made of high-temperature resistant insulating paper.

7. The inflatable adhesive tape according to claim 1, characterized in that, The base layer (2) is made of polyester fabric.

8. The inflatable adhesive tape according to claim 1, characterized in that, The vulcanization process is carried out using a flat belt drum vulcanizing machine.