Novel composite balloon manufacturing method

Abstract

The invention relates to the technical field of composite balloon manufacturing, in particular to a novel composite balloon manufacturing method which is achieved based on a first balloon clamping plate, a second balloon clamping plate, a longitudinal fiber mounting device, a first longitudinal fiber limiting stopper, a second longitudinal fiber limiting stopper and a transverse fiber winding device. Comprising the following steps: pretreating the surface of a balloon, and applying a layer of primer to the surface of a preformed balloon substrate to ensure that a uniform viscous layer is formed on the surface of the balloon; according to the method, a fiber layer and a balloon substrate are fused and compounded into a seamless integral structure through a three-in-one synergistic process of primer pre-application, direct weaving and integral film covering, the layering risk is fundamentally eliminated, meanwhile, the weaving tension and the area density are precisely regulated and controlled, contradictory performance indexes in a traditional process are solved, and the manufacturing cost is reduced. The finally manufactured balloon has radial supporting force, excellent flexibility, optimized passing outer diameter and product reliability with consistent height.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of composite balloon manufacturing, in particular to a novel composite balloon manufacturing method. BACKGROUND

[0002] Generally, there are mainly two manufacturing methods for balloon manufacturing at present, one is the braiding method of BD, longitudinal wiring, monofilament winding, and the other is the longitudinal and transverse composite braiding method.

[0003] The method of BD is flexible in design, and is flexible for balloons of different diameters, and the longitudinal wiring does not involve the balloon pin, which is beneficial for subsequent balloon welding. The second method is the main domestic mainstream method, which directly uses a wire braiding machine, and the process and equipment are mature and simple, but since the whole balloon is fully braided, the balloon is not perfect at the pin and the balloon cone, mainly the thickness control, and the overall balloon is hard.

[0004] Based on this, the present application provides a novel composite balloon manufacturing method to solve the above technical problems. SUMMARY

[0005] The present application aims to provide a novel composite balloon manufacturing method to solve the problems in the above background.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme: The present application provides a novel composite balloon manufacturing method, which is realized based on a first balloon clamping plate, a second balloon clamping plate, a longitudinal fiber mounting device, a first longitudinal fiber limiter, a second longitudinal fiber limiter and a transverse fiber winding device, and includes the following steps: S1. Pre-treat the surface of the balloon, apply a layer of primer to the surface of the pre-formed balloon base to ensure that a uniform adhesive layer is formed on the surface of the balloon; S2. Clamping and fixing the balloon, loading the balloon treated in step S1 to the manufacturing tool, and fixing the two ends by the first balloon clamping plate and the second balloon clamping plate respectively, after clamping, the first balloon clamping plate and the second balloon clamping plate are fixed in position and can realize coaxial rotation; S3. Laying and fixing of longitudinal fibers, loading a plurality of longitudinal fibers onto the longitudinal fiber mounting device and adjusting the tension of each fiber through the built-in tension spring, starting the device to rotate the first balloon clamping plate and the second balloon clamping plate coaxially or to rotate the longitudinal fiber mounting device around the balloon, and the longitudinal fibers pass through the first longitudinal fiber limiter and the second longitudinal fiber limiter in turn, and the longitudinal fibers are uniformly laid on the surface of the balloon at a predetermined distribution density through the cooperation of the first longitudinal fiber limiter and the second longitudinal fiber limiter, and due to the adhesion of the balloon surface primer, the fibers are firmly and preliminarily bonded to the balloon body, and according to the length of the balloon cone, the fiber wire is cut to make the fiber closely fit the shape of the balloon cone; S4. Winding of transverse fibers, starting the transverse fiber winding device to wind a single continuous transverse fiber from one end of the balloon to the other end, and by accurately controlling the moving speed of the transverse fiber winding device, the transverse fiber is substantially perpendicular to the balloon axis during winding, and the winding continues until the required length of the other end of the tube foot is exceeded; S5. Film curing to form an overall structure, carrying out film coating treatment on the woven balloon to firmly combine the longitudinal and transverse interlaced fiber weaving layer and the balloon base into a whole, and improving the compression resistance, fatigue resistance and structural stability of the balloon by encapsulating the fibers to fundamentally prevent delamination during use.

[0007] Preferably, the primer material of step S1 is one of thermoplastic polyurethane, water-based polyurethane or polyurethane acrylate.

[0008] Preferably, the glue application process of step S1 is one of spraying, dipping or brushing.

[0009] Preferably, the number of longitudinal fibers of step S3 is designed according to the diameter of the balloon, and the distribution density is controlled to be 0.8-1.2mm from the center of the fiber wire diameter, and the number of longitudinal fibers is determined to be 31 or 32 bundles.

[0010] Preferably, the winding density of the transverse fibers of step S4 is controlled to be 0.5-1.0mm.

[0011] Preferably, the film material of step S5 is one of UV glue, polyurethane or polyurethane acrylate.

[0012] Preferably, the film coating process of step S5 is one of heat shrinkage, spraying, dipping or film coating.

[0013] Preferably, steps S3 and S4 can be performed simultaneously to realize one-time cooperative weaving of longitudinal and transverse fibers.

[0014] Compared with the prior art, the beneficial effects of the present application are: The present application fundamentally eliminates the delamination risk by pre-applying the primer, directly weaving and overall film coating three-in-one synergistic process, and fusing the fiber layer and the balloon substrate into a seamless integral structure, and at the same time, the present application method precisely controls the weaving tension and the regional density, solves the contradictory performance indicators in the traditional process, and finally manufactures the balloon with radial support force, excellent flexibility, optimized outside diameter and high consistency of product reliability, and solves the defects existing in the traditional two processes. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 It is a longitudinal winding fiber operation schematic diagram of the present application; Fig. 2 It is a transverse winding fiber operation schematic diagram of the present application; Fig. 3 It is a balloon cross-section schematic diagram of the present application.

[0016] LEGEND: 1, balloon clamping plate 1; 2, balloon clamping plate 2; 3, longitudinal fiber hanging device; 4, first longitudinal fiber limiter; 5, second longitudinal fiber limiter; 6, transverse fiber winding device. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0018] Please refer to Figs. 1-3 The present application proposes a new composite balloon manufacturing method, which is realized based on a balloon clamping plate 1, a balloon clamping plate 2, a longitudinal fiber hanging device 3, a first longitudinal fiber limiter 4, a second longitudinal fiber limiter 5 and a transverse fiber winding device 6, and includes the following steps: S1. Pre-treat the surface of the balloon, apply a layer of primer to the surface of the preformed balloon substrate, and ensure that a uniform adhesive layer is formed on the surface of the balloon; S2. Clamping and fixing the balloon, loading the balloon treated in step S1 to the manufacturing tool, and fixing the two ends of the balloon by the balloon clamping plate 1 and the balloon clamping plate 2 respectively. After clamping, the positions of the balloon clamping plate 1 and the balloon clamping plate 2 are fixed and can realize coaxial rotation; S3. The longitudinal fibers are laid and fixed. A plurality of longitudinal fibers are loaded onto the longitudinal fiber mounting device 3, and the tension of each fiber is adjusted by the built-in tension spring. The device is started to rotate the first balloon clamping plate 1 and the second balloon clamping plate 2 coaxially, or to rotate the longitudinal fiber mounting device 3 around the balloon. The longitudinal fibers pass through the first longitudinal fiber limiter 4 and the second longitudinal fiber limiter 5 in sequence. The first longitudinal fiber limiter 4 and the second longitudinal fiber limiter 5 cooperate to uniformly lay the longitudinal fibers on the surface of the balloon at a predetermined distribution density. Due to the adhesion of the primer on the surface of the balloon, the fibers are firmly and preliminarily bonded to the body of the balloon. According to the length of the tapered portion of the balloon, the fiber wire is cut to tightly fit the shape of the tapered portion of the balloon. S4. The winding of the transverse fibers is performed. The transverse fiber winding device 6 is started to wind a single continuous transverse fiber from one end of the balloon to the other end. By accurately controlling the moving speed of the transverse fiber winding device 6, the transverse fiber is substantially perpendicular to the axis of the balloon during winding. The winding continues until the required length of the winding range exceeds the other end of the tube foot. S5. Film curing to form an overall structure. After the weaving of the balloon is completed, the film coating process is performed to firmly combine the interlaced fiber weaving layer and the balloon base into a whole. The pressure resistance, fatigue resistance and structural stability of the balloon are improved by encapsulating the fibers, which fundamentally prevents delamination during use.

[0019] It should be further noted that the primer material in step S1 is one of thermoplastic polyurethane, water-based polyurethane or polyurethane acrylate, which provides excellent material adhesion and flexibility. The primer application process in step S1 is one of spraying, dipping or brushing, which ensures uniform and controllable thickness of the primer coating. The number of longitudinal fibers in step S3 is designed according to the diameter of the balloon, and the distribution density is controlled to be 0.8-1.2mm from the center of the fiber wire diameter. The number of longitudinal fibers is determined to be 31 or 32, which ensures that the balloon has balanced radial support force and flexibility. The winding density of the transverse fibers in step S4 is controlled to be between 0.5-1.0mm, which provides the best structural stability for balloons of different specifications. The film material in step S5 is one of UV glue, polyurethane or polyurethane acrylate, which accurately controls the axial strength and flexibility of the balloon. The film coating process in step S5 is one of heat shrinkage, spraying, dipping or film coating, which forms a complete, flexible and biocompatible sealing coating. Steps S3 and S4 can be performed simultaneously to realize one-time interlacing of longitudinal and transverse fibers, which ensures that the coating is uniform, complete and firmly wrapped around the fiber skeleton. DETAILED DESCRIPTION, in practical applications, please refer toFig. 1 The balloon diameter of the balloon of the present application is 4-30 mm, the balloon is non-compliant, the balloon diameter is 4-30 mm, and the balloon is non-compliant.

[0020] The longitudinal fiber material can be ultra-high-density polyethylene fiber, aramid fiber, polyester fiber, or liquid crystal fiber, and the fiber diameter is 20D-100D. The transverse fiber material can be ultra-high-density polyethylene fiber, aramid fiber, polyester fiber, or liquid crystal fiber, and the fiber diameter is 20D-100D. The balloon is in a filled state, the filled state is a nominal pressure, that is, a pressure that ensures the specified diameter of the balloon. For example, the diameter of a 10.0 mm balloon, the filling pressure can ensure that its diameter is about 10.0 mm.

[0021] The balloon surface is coated with a primer, and the primer material is a thermoplastic polyurethane, water-based polyurethane, or polyurethane acrylate tacky material. The coating process can be selected from spraying, dipping, or brushing.

[0022] The number of longitudinal fibers is designed according to the diameter of the balloon, and the distribution density is about 0.8-1.2 mm, preferably 1.0 mm, for example, a 10.0 mm diameter balloon has a circumference of 31.4 mm, so the number of longitudinal fibers is about 31, and according to the design of the equipment, it is determined to be 32 bundles.

[0023] The transverse fiber is a single continuous fiber that is wound transversely, and the winding density is controlled by the transverse movement of the balloon, and the transverse fiber spacing is between 0.5-1.0 mm.

[0024] After the weaving of the balloon, the surface will have a layer of film covering the fibers. The film material can be UV glue, polyurethane, or polyurethane acrylate material. The process can be heat shrinkage, spraying, dipping, or film coating. The function is to form a whole with the fiber weaving layer, improve the compression resistance, and improve the compression stability. First, the surface of the balloon is pretreated; a layer of primer is applied to the surface of the preformed balloon substrate, the primer material is a material that is tacky after drying, and the preferred material is one of thermoplastic polyurethane, water-based polyurethane, or polyurethane acrylate, and the coating process can be selected from one of spraying, dipping, or brushing, to ensure that a uniform tacky layer is formed on the surface of the balloon; Then, clamp and fix the balloon; load the balloon treated in step one to the manufacturing tool, and fix it by the first balloon clamping plate 1 and the second balloon clamping plate 2 at both ends, after clamping, the two clamping plates are fixed in position and can rotate coaxially; After that, lay and fix the longitudinal fibers; load the multiple longitudinal fibers to the longitudinal fiber mounting device 3, and adjust the tension of each fiber through the built-in tension spring; Start the device, make the first balloon clamping plate 1 and the second balloon clamping plate 2 rotate coaxially, or make the longitudinal fiber hanging device 3 rotate around the balloon; Finally, the longitudinal fibers pass through the first longitudinal fiber limiter 4 and the second longitudinal fiber limiter 5 in turn, and the two limiters work together to uniformly lay the longitudinal fibers on the balloon surface at a predetermined distribution density. Due to the adhesion of the balloon surface primer, the fibers are firmly and preliminarily bonded to the balloon body; According to the length of the balloon cone, the fiber wire is cut so that the fiber closely fits the shape of the balloon cone. The number of longitudinal fibers is designed according to the diameter of the balloon, and the distribution density is controlled at about 0.8-1.2mm (preferably 1.0mm) from the center of the fiber wire diameter. The number of longitudinal fibers is determined as 31 or 32 bundles; Winding of the transverse fibers; start the transverse fiber winding device 6 to wind a single continuous transverse fiber from one end of the balloon to the other end; By precisely controlling the moving speed of the transverse fiber winding device 6, the winding density of the transverse fibers is adjusted, so that the spacing between the transverse fibers is controlled between 0.5-1.0mm. When winding, the transverse fibers are basically perpendicular to the balloon axis; The winding continues until the winding range exceeds the required length of the other end of the tube foot; Finally, film coating and curing are performed to form an overall structure; after the weaving of the balloon is completed, film coating treatment is performed, the film coating material is preferably UV glue, polyurethane or polyurethane acrylate, and the film coating process can be selected from one of heat shrinkage, spraying, dipping or film coating. The role of this step is to firmly combine the longitudinal and transverse interlaced fiber weaving layer and the balloon substrate into a whole, encapsulate the fibers, greatly improve the pressure resistance, fatigue resistance and structural stability of the balloon, and fundamentally prevent delamination during use.

[0025] In the description of the present specification, the description of the terms "one embodiment", "example", "specific example" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0026] The preferred embodiments of the application disclosed above are only to facilitate the elucidation of the application. The preferred embodiments do not describe all the details of the application and limit the application to the specific embodiments described. Obviously, many modifications and variations can be made in light of the teachings above. The description is chosen and described in order to best explain the principles of the application and its practical application to thereby enable others skilled in the art to best utilize the application and get the best results from the application. The application is only limited by the scope of the appended claims and the full range of equivalents thereof.

Claims

1. A novel composite balloon manufacturing method, the method being implemented based on a first balloon clamping plate (1), a second balloon clamping plate (2), a longitudinal fiber mounting device (3), a first longitudinal fiber limiter (4), a second longitudinal fiber limiter (5), and a transverse fiber winding device (6), characterized in that, Includes the following steps: S1. Perform pretreatment on the balloon surface by applying a layer of base adhesive to the surface of the pre-formed balloon base to ensure that a uniform adhesive layer is formed on the balloon surface; S2. Clamp and fix the balloon. Load the balloon processed in step S1 onto the manufacturing fixture. Its two ends are fixed by the first balloon clamping plate (1) and the second balloon clamping plate (2) respectively. After clamping, the positions of the first balloon clamping plate (1) and the second balloon clamping plate (2) are fixed and can be rotated coaxially. S3. Laying and fixing of longitudinal fibers: Load multiple bundles of longitudinal fibers onto the longitudinal fiber mounting device (3), and adjust the tension of each fiber through its built-in tension spring. Start the equipment to make the first balloon clamping plate (1) and the second balloon clamping plate (2) rotate coaxially, or make the longitudinal fiber mounting device (3) rotate around the balloon. The longitudinal fibers pass through the first longitudinal fiber limiter (4) and the second longitudinal fiber limiter (5) in sequence. Through the synergistic effect of the first longitudinal fiber limiter (4) and the second longitudinal fiber limiter (5), the longitudinal fibers are laid evenly on the balloon surface with a predetermined distribution density. Due to the adhesiveness of the balloon surface adhesive, the fibers are firmly and initially bonded to the balloon body. According to the length of the balloon cone, the fiber wire is cut so that the fibers fit tightly to the shape of the balloon cone. S4. Perform transverse fiber winding, start the transverse fiber winding device (6), and wind a single continuous transverse fiber from one end of the balloon to the other end. By precisely controlling the moving speed of the transverse fiber winding device (6), the transverse fiber is basically perpendicular to the balloon axis during winding. The winding continues until the winding range exceeds the length required by the other end of the balloon. S5. Coating and curing to form an integral structure: The completed balloon is coated to firmly combine the crisscrossing fiber weave layers with the balloon base into a whole.

2. The novel composite balloon manufacturing method according to claim 1, characterized in that, The base adhesive material in step S1 is one of thermoplastic polyurethane, waterborne polyurethane, or polyurethane acrylate.

3. The novel composite balloon manufacturing method according to claim 2, characterized in that, The adhesive application process in step S1 is one of spraying, dipping, or brushing.

4. The novel composite balloon manufacturing method according to claim 3, characterized in that, The number of longitudinal fibers in step S3 is designed according to the balloon diameter, and the distribution density is controlled at a center distance of 0.8~1.2mm between fiber diameters. The number of longitudinal fibers is determined to be 31 or 32 bundles.

5. A novel composite balloon manufacturing method according to claim 4, characterized in that, Step S4 controls the winding density of the transverse fibers so that the spacing between the transverse fibers is controlled between 0.5 and 1.0 mm.

6. A novel composite balloon manufacturing method according to claim 5, characterized in that, The coating material in step S5 is one of UV adhesive, polyurethane, or polyurethane acrylate.

7. A novel composite balloon manufacturing method according to claim 6, characterized in that, The coating process in step S5 is one of heat shrinking, spraying, dip coating, or lamination.

8. A novel composite balloon manufacturing method according to claim 7, characterized in that, Steps S3 and S4 can be performed simultaneously to achieve one-time coordinated weaving of longitudinal and transverse fibers.

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