TWI812443B - Rubber inflatable cloth and manufacturing method therefor - Google Patents

Abstract

A rubber inflatable cloth and a manufacturing method thereof are provided. The manufacturing method includes a fluxing step, a first calendering step, a first vulcanization step, a second calendering step, and a second vulcanization step. In the fluxing step, rubber, reinforcing agents and vulcanizing agents are mixed together to form a mixed colloid. In the first calendering step, the mixed colloid is calendered on the upper surface of a fiber cloth layer to form a composite fiber cloth. In the first vulcanization step, the composite fiber cloth is vulcanized. In the second calendering step, the mixed colloid is calendered to the vulcanized composite fiber cloth to form a rubber composite fiber cloth. In the second vulcanization step, a structural cloth is provided and two rubber composite fiber cloths are attached to both sides of the structural cloth and vulcanized to form a rubber inflatable cloth.

Description

Rubber inflatable cloth and manufacturing method thereof

The present invention relates to an inflatable rubber cloth and a manufacturing method thereof, in particular to a rubber inflatable cloth with a seven-layer 3D structure and a manufacturing method thereof.

In the existing technology, the production method of rubber inflatable cloth is to first apply an adhesive between the rubber film and the fiber cloth layer, then fit them together and vulcanize them. Subsequently, a vulcanized rubber film is coated with adhesive and attached to the other side of the fiber cloth layer to form a rubber fiber cloth structure with the vulcanized rubber film attached to the top and bottom of the fiber cloth. Then, one side of the rubber fiber cloth structure is coated with glue, and then it is bonded to two different sides of the structural cloth (Drop Stitch) that has been coated with glue on the surface and vulcanized.

This production method is quite complicated and requires at least 8 glue application procedures. In this way, not only the production rate is slow, but also the process is complicated, resulting in low product yield.

Therefore, how to improve the production efficiency of rubber inflatable cloth through structural design improvements to overcome the above-mentioned defects has become one of the important issues to be solved by this project.

The technical problem to be solved by the present invention is to provide a manufacturing method of rubber inflatable cloth in view of the shortcomings of the existing technology. This method can not only effectively reduce the number of times of adhesive coating and improve the yield, but also make the produced rubber inflatable cloth have the characteristics of Better bonding strength. Also because it has better bonding strength, it has better waterproof coefficient and waterproof effect.

In order to solve the above technical problems, another technical solution adopted by the present invention is to provide a manufacturing method of rubber inflatable cloth, which sequentially includes the steps of mixing: mixing 100 parts by weight of rubber, 60 parts by weight of reinforcing agent, and 2 parts by weight of vulcanizing agent to form multiple mixing colloids. The first calendering step: calender the mixed colloid on the upper surface of a fiber cloth layer to form a composite fiber cloth. The first vulcanization step: vulcanize the composite fiber cloth to form a vulcanized composite fiber cloth. The second calendering step: Calender the mixed colloid to the lower surface of the fiber cloth layer in the vulcanized composite fiber cloth to form a vulcanized mixed colloid, a vulcanized fiber cloth layer and an unvulcanized mixed colloid in sequence. A rubber composite fiber cloth. The second vulcanization step: attach the surfaces of the two rubber composite fiber cloths with unvulcanized mixed colloids to both sides of a structural cloth for vulcanization to form a rubber inflatable cloth.

Further, the first vulcanization step is to heat the composite fiber cloth at a temperature of 140°C for up to 2 hours.

Further, the second vulcanization step is carried out under conditions of 155±5℃, pressure 70±5kg/ ^cm2 and 0.30m/min.

Furthermore, the bonding strength of the rubber inflatable cloth to both sides of the structural cloth is at least 25kg/5cm.

In order to solve the above technical problems, another technical solution adopted by the present invention is to provide a rubber inflatable cloth, which includes four mixed colloids, two fiber cloth layers and a structural cloth. The mixing colloid contains 100 parts by weight of rubber, 60 parts by weight of reinforcing agent, and 2 parts by weight of vulcanizing agent. Both sides of the two fiber cloth layers are respectively adhered to the mixed colloid. The fiber cloth layers are selected from polyester, nylon, cotton, polyester/nylon blended yarn and other blended woven fabrics, plain woven fabrics, and horizontal grains of different fibers. , plaid cloth, twill cloth, jacquard cloth, N/T interwoven cloth, colored yarn interwoven cloth, taffeta, Oxford cloth, satin cloth. Both sides of the structural fabric are laminated with fiber cloth layers of mixed colloids. The structural fabric is selected from polyester, nylon, cotton, polyester/nylon blended yarn and other blended woven fabrics, plain woven fabrics, etc. of different fibers. Horizontal grain, plaid fabric, twill fabric, jacquard fabric, N/T interwoven fabric, colored yarn interwoven fabric, taffeta, Oxford fabric, satin fabric. Mix the colloid, the fiber cloth layer and the structural cloth to produce an inflatable rubber cloth according to the above-mentioned manufacturing method of the rubber inflatable cloth.

One of the beneficial effects of the present invention is that the manufacturing method of the rubber inflatable cloth and the rubber inflatable cloth provided by the present invention can be achieved by using unvulcanized mixed colloid (raw rubber) as the adhesive on both sides of the structural cloth. The bonding strength of at least 25 kg/5cm can reduce the number of adhesive coatings to 6 times, reducing the number of processes and increasing the yield. However, with the existing technology of coating adhesive on the surface of vulcanized mixed colloid (cooked rubber), it is possible to achieve a bonding strength close to 25 kg/5cm by applying 0.30mm adhesive 10 times. However, the yield performance is still far lower than the yield range of this embodiment. And the process actually has a yield rate of 87-92% compared with the manufacturing method of the rubber inflatable cloth and the rubber inflatable cloth provided in this embodiment. Therefore, the present invention not only improves the yield and bonding strength, but also has a better waterproof coefficient because the increased bonding strength makes the structure denser.

In order to further understand the features and technical content of the present invention, please refer to the following detailed description and drawings of the present invention. However, the drawings provided are only for reference and illustration and are not used to limit the present invention.

The following is a specific example to illustrate the implementation of the "rubber inflatable cloth and its manufacturing method" disclosed in the present invention. Those skilled in the art can understand the advantages and effects of the present invention from the content disclosed in this specification. The present invention can be implemented or applied through other different specific embodiments, and various details in this specification can also be modified and changed based on different viewpoints and applications without departing from the concept of the present invention. In addition, the drawings of the present invention are only simple schematic illustrations and are not depictions based on actual dimensions, as is stated in advance. The following embodiments will further describe the relevant technical content of the present invention in detail, but the disclosed content is not intended to limit the scope of the present invention. In addition, the term "or" used in this article shall include any one or combination of more of the associated listed items depending on the actual situation.

Please refer to FIGS. 1 to 5 , which are embodiments of the present invention. The embodiments of the present invention disclose a manufacturing method of an inflatable rubber cloth and an inflatable rubber cloth. In order to facilitate understanding of the rubber inflatable cloth of this embodiment, the manufacturing method of the rubber inflatable cloth will be described below, and then the structure and connection relationship of each element of the rubber inflatable cloth will be further introduced.

It should be noted that the drawings corresponding to this embodiment and the related quantities and shapes mentioned are only used to specifically illustrate the implementation of the present invention to facilitate understanding of the content of the present invention, but are not used to Limit the scope of protection of the present invention.

As shown in Figure 1, the manufacturing method of rubber inflatable cloth sequentially includes: mixing step S100, first calendering step S102, first vulcanization step S104, second calendering step S106 and second vulcanization step S108. However, the present invention does not Limited to this. For example, the manufacturing method of the rubber inflatable cloth may further include a coating step S107 (as shown in Figure 2).

To facilitate explanation and understanding, each step will be introduced in order below. Specifically, during the mixing step S100, 100 parts by weight of rubber, 60±10 parts by weight of reinforcing agent and 2±0.5 parts by weight of vulcanizing agent are mixed at a temperature between 90°C and 110°C. The mixing is carried out at the mixing temperature to form a mixing colloid 10, and the mixing colloid 10 is allowed to stand for at least 12 hours after the mixing is completed.

Specifically, the rubber, the reinforcing agent and the vulcanizing agent are put into a 10,000-horsepower machine (Banbury, commonly known as a mixer) for mixing and stirring. Among them, during the mixing process, if the mixing machine overheats, the cooling water must be turned on to cool down the mixing colloid 10 so that the mixing colloid 10 does not overheat and is maintained at a specific mixing temperature.

It should be noted that in this embodiment, the rubber can be selected from, but is not limited to, the following groups, such as natural rubber (NR), styrene butadiene rubber (SBR), chlorosulfonated rubber (CSM), chloroprene Polyethylene rubber (CR), butyl rubber (IIR) or nitrile rubber (NBR), etc., the rubber type can be changed according to actual product needs and design with different material strengths.

For the convenience of explanation and understanding, the items and types of reinforcing agents and vulcanizing agents are listed below.

The reinforcing agent can be exemplified by carbon black, kaolin clay, talc, mica, calcium carbonate, silicon dioxide and other compounds; the lubricant can be exemplified by polyglycerol fatty acid esters, phosphate esters, fatty acid esters, fatty acid esters, etc. Amines, higher fatty acids and other compounds.

Examples of the vulcanizing agent include 2,2-bis(4-hydroxyphenyl)propane [bisphenol A], 2,2-bis(4-hydroxyphenyl)hexafluoropropane, 2,2-bis(4-hydroxyphenyl)propane -Hydroxyphenyl) perfluoropropane [bisphenol AF], hydroquinone, catechol, resorcinol, 4,4'-dihydroxybiphenyl, 4,4'-dihydroxydiphenylmethane , 4,4'-dihydroxydiphenyltrine, 2,2-bis(4-hydroxyphenyl)butane and other polyhydroxyaromatic compounds or their alkali metal salts or alkaline earth metal salts and other polyol-based vulcanizing agents and other compounds.

In the first calendering step S102, the kneading colloid 10 is attached to the upper surface of a fiber cloth layer 20 through a calendering device (not shown) to form a composite fiber cloth (as shown in FIG. 3). More precisely, the mixing colloid 10 will be calendered by the calendering device at a speed of 8-20m/min and a pressure of 20-80Kg/ ^cm2 at a temperature between 80°C and 90°C to form. A mixed rubber film (continuous film) is attached to the upper surface of the fiber cloth layer 20 .

Before the mixing colloid 10 is attached to the fiber cloth layer 20, a layer of adhesive with a thickness of 0.30 mm is coated on the fiber cloth layer 20. It should be noted that the adhesive used in this embodiment is glue.

It should be noted that in this embodiment, the material of the fiber cloth layer 20 can be selected from, but is not limited to, polyester cloth, nylon cloth, cotton cloth, polyester/nylon blended gauze and other blended woven cloths and plain woven cloths of different fibers. Fabric, horizontal grain, plaid fabric, twill fabric, jacquard fabric, N/T interwoven fabric, colored yarn interwoven fabric, taffeta, Oxford fabric, satin fabric, etc.

During the first vulcanization step S104, the composite fiber cloth is put into an autoclave and heated at 140° C. for up to 2 hours for first vulcanization to form a vulcanized composite fiber cloth.

It should be noted that during the first vulcanization step S104, if the vulcanization is performed at a temperature exceeding 140°C, the structure of the vulcanized composite fiber cloth produced will be destroyed due to the high temperature, and will be damaged during subsequent processing. During the procedure, the surface aging of the vulcanized composite fiber cloth is not conducive to subsequent reprocessing; if vulcanization is performed at a temperature lower than 140°C, even if there is a fiber cloth layer in the previous first calendering step S102 20, the vulcanized composite fiber cloth will have poor adhesion during subsequent processing, which will reduce the yield of subsequent products.

In the second calendering step S106, the kneading colloid 10 is attached to the lower surface of the vulcanized composite fiber cloth through the calendering device (as shown in Figure 4). More precisely, the kneading colloid 10 is rolled to the lower surface of the vulcanized fiber cloth layer 20' in the vulcanized composite fiber cloth to form the vulcanized kneading colloid 10' and the vulcanized fiber cloth layer 20 in sequence. 'And a rubber composite fiber cloth composed of unvulcanized mixed colloid 10.

It should be supplemented that during the second calendering step S106, the kneading colloid 10 will be rolled by the calendering device at a speed of 8-20m/min and 20-80Kg at a temperature between 80-90°C. / ^cm2 pressure to form a compound rubber film (continuous film), and adhere to the lower surface of the vulcanized composite fiber cloth.

In the second vulcanization step S108, the two rubber composite fiber cloths are respectively attached to both sides of a structural cloth 30 and vulcanized to form a rubber inflatable cloth (as shown in Figure 5). To be more precise, the surfaces of the two rubber composite fiber cloths with unvulcanized mixed colloid 10 are respectively attached to both sides of the structural cloth 30, and have been processed at a temperature of 155±5°C and a pressure of 70±5kg. /cm ² and 0.30m/min conditions for the second vulcanization operation to form a seven-layer structure of rubber inflatable cloth. Wherein, the bonding strength of the rubber inflatable cloth with a seven-layer structure attached to both sides of the structural cloth 30 is at least 25kg/5cm. And the thickness of the rubber inflatable cloth is at least 8mm. It should be noted that the actual thickness of the rubber inflatable cloth can be adjusted according to actual needs.

It should be noted that the material of the structural cloth 30 (Drop Stitch) can be selected from, but not limited to, polyester, nylon, cotton, polyester/nylon blended yarn and other fibers of different compositions.

In addition, before performing the second vulcanization step S108, a coating step S107 is also included. An adhesive layer is coated on the surface of the rubber composite fiber cloth with the unvulcanized kneading colloid 10 and on both sides of the structural cloth 30 . The thickness of each adhesive layer is 0.30mm.

It should be noted that, as shown in Table 1 below, Table 1 shows the manufacturing method of the rubber inflatable cloth according to the embodiment of the present invention and the differences between the rubber inflatable cloth and the prior art. In the prior art, in the second calendering step, a layer of adhesive with a thickness of about 0.30 mm is applied between the vulcanized composite fiber cloth and the vulcanized kneading colloid 10' (cooked rubber) before the calendering process is performed. However, in the embodiment of the present invention, the vulcanized fiber cloth layer 20' and the unvulcanized mixing colloid 10 (raw rubber) are directly vulcanized without coating adhesive. The rubber inflatable cloth processed by the present invention can not only save at least two adhesive coating processes, but also achieve higher joint strength and yield on both sides of the structural cloth 30 . Table 1A construction method Then strength (kg/5cm) Yield(%) existing technology 10~15 70~80 This embodiment ≧25 87~92

[Beneficial effects of the embodiment]

One of the beneficial effects of the present invention is that the manufacturing method of the rubber inflatable cloth and the rubber inflatable cloth provided by the present invention can be achieved by using unvulcanized mixed colloid (raw rubber) as the adhesive on both sides of the structural cloth. The bonding strength is at least 25kg/5cm, which can reduce the number of adhesive coatings to 6 times, reduce the number of processes and increase the yield. However, using the existing technology of coating adhesive on the surface of vulcanized mixed colloid (cooked rubber), it is possible to achieve a bonding strength close to 25kg/5cm by applying 0.30mm adhesive 10 times. However, the yield performance is still far lower than the yield range of this embodiment. And the rubber inflatable cloth manufactured according to the manufacturing method of the rubber inflatable cloth provided in this embodiment has a yield rate of 87-92%. Therefore, the present invention not only improves the yield and bonding strength, but also has a better waterproof coefficient and waterproof effect because the increased bonding strength makes the structure denser.

The contents disclosed above are only preferred and feasible embodiments of the present invention, and do not limit the scope of the patent application of the present invention. Therefore, all equivalent technical changes made by using the description and drawings of the present invention are included in the application of the present invention. within the scope of the patent.

S100: Mixing step

S102: First calendering step

S104: First vulcanization step

S106: Second calendering step

S107: Coating step

S108: Second vulcanization step

10: Mixing colloid

10’: Vulcanized mixed colloid

20:Fiber cloth layer

20’: Vulcanized fiber cloth layer

30: Structural fabric

Figure 1 is a schematic flow chart of a manufacturing method of an inflatable rubber cloth according to an embodiment of the present invention.

Figure 2 is a schematic flow chart of the coating step according to the embodiment of the present invention.

Figure 3 is a schematic diagram of a composite fiber cloth according to an embodiment of the present invention.

Figure 4 is a schematic diagram of a rubber composite fiber cloth according to an embodiment of the present invention.

Figure 5 is a schematic diagram of an inflatable rubber cloth according to an embodiment of the present invention.

S100: Mixing step

S102: First calendering step

S104: First vulcanization step

S106: Second calendering step

S108: Second vulcanization step

Claims (10)

A manufacturing method of rubber inflatable cloth, which includes in sequence: mixing steps; mixing 100 parts by weight of rubber, 60 parts by weight of reinforcing agent, and 2 parts by weight of vulcanizing agent to form multiple mixing colloids; wherein, The vulcanizing agent is selected from 2,2-bis(4-hydroxyphenyl)propane [bisphenol A], 2,2-bis(4-hydroxyphenyl)hexafluoropropane, 2,2-bis(4- Hydroxyphenyl) perfluoropropane [bisphenol AF], hydroquinone, catechol, resorcinol, 4,4'-dihydroxybiphenyl, 4,4'-dihydroxydiphenylmethane, At least one of the material group consisting of 4,4'-dihydroxydiphenyltrilane and 2,2-bis(4-hydroxyphenyl)butane; the first calendering step: calendering the mixing colloid on the upper surface of a fiber cloth layer to form a composite fiber cloth; the first vulcanization step: vulcanizing the composite fiber cloth to form a vulcanized composite fiber cloth; the second calendering step: mixing the kneaded colloid Calendering to the lower surface of the fiber cloth layer in the vulcanized composite fiber cloth to form a rubber composite fiber cloth composed of vulcanized mixed colloid, vulcanized fiber cloth layer and unvulcanized mixed colloid in sequence ; and the second vulcanization step; attaching the surfaces of the two rubber composite fiber cloths with unvulcanized mixed colloids to both sides of a structural cloth and vulcanizing them to form a rubber inflatable cloth. The manufacturing method of rubber air-filled cloth according to claim 1, wherein the mixing step mixes the rubber, the reinforcing agent and the vulcanizing agent at a mixing temperature between 90°C and 100°C. The manufacturing method of rubber inflatable cloth according to claim 1, wherein the first vulcanization step heats the composite fiber cloth at a temperature of 140° C. for up to 2 hours. The manufacturing method of rubber inflatable cloth as claimed in claim 1, further comprising a coating step, the coating step being performed before the second vulcanization step, An adhesive layer is coated on the surface of the rubber composite fiber cloth with unvulcanized mixing colloid and on both sides of the structural cloth. The manufacturing method of rubber inflatable cloth according to claim 4, wherein the thickness of the adhesive layer is 0.30 mm. The manufacturing method of rubber inflatable cloth as claimed in claim 1, wherein the second vulcanization step is carried out under conditions of 155±5℃, pressure 70±5kg/ ^cm2 and 0.30m/min. The manufacturing method of rubber air-filled cloth according to claim 1, wherein the bonding strength of the rubber air-filled cloth to both sides of the structural cloth is at least 25kg/5cm. The manufacturing method of the rubber inflatable cloth according to claim 1, wherein the thickness of the rubber inflatable cloth is at least 8 mm. A rubber inflatable cloth, which includes: four mixed colloids, each of which contains 100 parts by weight of rubber, 60 parts by weight of reinforcing agent, and 2 parts by weight of vulcanizing agent; wherein, the vulcanizing agent is selected from Free 2,2-bis(4-hydroxyphenyl)propane [bisphenol A], 2,2-bis(4-hydroxyphenyl)hexafluoropropane, 2,2-bis(4-hydroxyphenyl)perfluoro Propane [bisphenol AF], hydroquinone, catechol, resorcinol, 4,4'-dihydroxybiphenyl, 4,4'-dihydroxydiphenylmethane, 4,4'-dihydroxydiphenylmethane At least one of the material groups composed of hydroxydiphenyl terepane and 2,2-bis(4-hydroxyphenyl)butane; two fiber cloth layers, both sides of each of the two fiber cloth layers are respectively Fitted to the mixing colloid, each fiber cloth layer is selected from the group consisting of polyester, nylon, cotton, polyester/nylon blended yarn, blended woven fabric, plain woven fabric, horizontal grain, plaid fabric, twill fabric, and denim. Floral cloth, N/T interwoven cloth, colored yarn interwoven cloth, taffeta, Oxford cloth, or satin cloth; and a structural cloth, the two sides of the structural cloth are respectively adhered to the described mixing colloid. Fiber cloth layer, the structural cloth is selected from polyester, nylon, cotton, polyester/nylon Dragon blended yarn, plain weave, horizontal weave, plaid, twill, jacquard, N/T interwoven, colored yarn interwoven, taffeta, Oxford cloth, or satin cloth; wherein, the mixing colloid , the fiber cloth layer and the structural cloth are made according to the manufacturing method of rubber inflatable cloth according to claim 1. The rubber inflatable cloth according to claim 9, wherein the bonding strength of the rubber inflatable cloth to both sides of the structural cloth is at least 25kg/5cm.

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