TWI656016B - Composite rubber manufacturing method - Google Patents

Abstract

The invention discloses a method for manufacturing a composite rubber material. This method first provides a base fabric, and then forms a first rubber layer on the first surface of the base fabric by a multi-stage molding method. A coating layer is formed and a second rubber layer is formed on the second surface of the base cloth. In this way, a high-quality composite rubber material can be obtained.

Description

Manufacturing method of composite rubber material

The invention relates to a method for manufacturing a composite material, in particular to a method for manufacturing a composite rubber material for dry lamination of two rubber materials with different characteristics.

According to the thermoplastic polyurethane (TPU) / polyurethane (PU) composite materials can be widely used in various fields of products, but its existing process, whether it is the substrate (such as textile) double-sided gluing, first laminating TPU film and then composite PU The film, or the PU film and the TPU film are laminated beforehand, have problems such as excessive solvent residues and air bubbles generated during solvent volatilization cannot be discharged, and pore defects are easily formed in the product. If the solvent is volatilized and air bubbles are expelled by over-drying, the adhesive force of the adhesive on the surface of the substrate will be attenuated, resulting in poor peel strength of the TPU film and PU film. Therefore, the above process has its necessity for improvement.

The technical problem to be solved by the present invention is to provide a method for manufacturing a composite rubber material that can accelerate the volatilization of solvents and the discharge of air bubbles in view of the shortcomings of the prior art.

In order to solve the above technical problems, the technical solution adopted by the present invention is: a method for manufacturing a composite rubber material, which includes the following steps: providing a base cloth having a first surface and a second surface opposite to each other; using a plurality of sections A first rubber layer is formed on the first surface by the molding method, wherein the first rubber layer is composed of a plurality of coating layers; and a second rubber layer is formed on the second surface.

In an embodiment of the present invention, a material of the first rubber layer is polyurethane (PU), and a material of the second rubber layer is thermoplastic polyurethane (TPU).

In an embodiment of the present invention, the multi-stage molding method includes the steps of repeatedly applying each of the coating layers and drying the coating.

In an embodiment of the present invention, the multi-stage molding method further includes heat-treating a plurality of the coatings.

In an embodiment of the present invention, the number of the coatings is two, the weight of the first of the two coatings is 220 ± 20 g / square yard, and the weight of the first of the two coatings is The weight of the two layers is 157 ± 20 g / square yard.

In an embodiment of the present invention, the first layer of the two coating layers is sequentially dried at three temperatures of 100 ± 3 ° C, 90 ± 3 ° C, and 120 ± 3 ° C. The drying temperature of the second layer in the coating layer is 80 ± 3 ° C, and the temperature of the heat treatment is 90 ± 5 ° C.

In an embodiment of the present invention, the number of the coatings is three, the weight of the first of the three coatings is 70 ± 10 g / square yard, and the weight of the first of the three coatings is three. The weight of the two layers was 150 ± 10 g / square yard, and the weight of the third of the three coatings was 160 ± 10 g / square yard.

In an embodiment of the present invention, the drying temperature for the first layer of the three coatings is 100 ± 3 ° C, and for the second layer of the three coatings, the drying temperature is sequentially 90 ± 3 ° C. Drying is performed at two temperatures of 3 ° C and 120 ± 3 ° C. The drying temperature for the third of the three coatings is 80 ± 3 ° C, and the temperature of the heat treatment is 90 ± 5 ° C.

In an embodiment of the present invention, when the base fabric is provided, a first adhesive layer is further formed on the first surface and a second adhesive layer is formed on the second surface; When the first rubber layer is described, the first rubber layer is adhered to the first surface through the first adhesive layer; when the second rubber layer is formed, the second rubber layer is formed. The second adhesive layer is adhered to the second surface.

In an embodiment of the present invention, when forming the first rubber layer, a first adhesive layer is formed on the first surface, and then the first adhesive layer is formed by the first adhesive layer. A material layer is attached to the first surface; when forming the second rubber layer, a second adhesive layer is first formed on the second surface, and then passes through the second surface. The adhesive layer adheres the second rubber layer on the second surface.

The beneficial effect of the present invention is that, in the method for manufacturing a composite rubber material provided by the technical solution of the present invention, a first rubber layer is formed on the first surface by "using a multi-stage molding method, wherein the first rubber The material layer is composed of multiple coatings, which can effectively accelerate the evaporation of the solvent and the discharge of air bubbles to ensure that there are no micro air bubbles in the product.

In order to further understand the features and technical contents 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 description, and are not intended to limit the present invention.

100‧‧‧ composite rubber

110‧‧‧kib

110a‧‧‧ Double-coated base fabric

110b‧‧‧ Double-sided glued and single-sided laminated base fabric

110c‧‧‧Single-sided adhesive base cloth

110d‧‧‧Single-sided adhesive and single-sided laminated base fabric

110e‧‧‧ Double-sided glued and single-sided laminated base fabric

111‧‧‧first surface

112‧‧‧Second surface

120‧‧‧The first adhesive layer

130‧‧‧Second adhesive layer

140‧‧‧first rubber layer

141‧‧‧coating

150‧‧‧Second rubber layer

160‧‧‧Appearance and decoration layer

R‧‧‧ temporarily supporting substrate

210, 212, 214, 216, 218‧‧‧ coating equipment

220,222,224,226‧‧‧‧Oven

230‧‧‧Compression device

240‧‧‧ rubber extruder

A1‧‧‧First Processing Section

A2‧‧‧Second Processing Section

A3‧‧‧Third Processing Section

A4‧‧‧Fourth Processing Section

FIG. 1 is a step flow diagram of a method for manufacturing a composite rubber material according to the present invention.

FIG. 2 is a schematic view of steps of an embodiment of a method for manufacturing a composite rubber material according to the present invention.

FIG. 3 is a schematic structural diagram (1) of an embodiment of a composite rubber material according to the present invention.

FIG. 4 is a schematic structural diagram (2) of an embodiment of a composite rubber material according to the present invention.

FIG. 5 is a schematic structural diagram of another embodiment of a composite rubber material according to the present invention.

FIG. 6 is a schematic view of steps of another embodiment of a method for manufacturing a composite rubber material according to the present invention.

FIG. 7 is a schematic view showing steps of still another embodiment of a method for manufacturing a composite rubber material according to the present invention.

According to the composite rubber material, at least the synergy between two rubber materials with different characteristics is used to realize the functional diversity of the product. However, it is difficult to combine the rubber materials with different characteristics on the same substrate, so the present invention Provided is a method for manufacturing a composite rubber material using roll-to-roll technology, which has wide application range, stable process, and Stable quality and other advantages, and suitable for industrial mass production.

Please refer to FIG. 1, which is a flowchart of steps of a method for manufacturing a composite rubber material according to the present invention. The manufacturing method S100 includes at least the following steps: step S102, providing a base fabric; step S104, forming a first rubber layer on one side of the base fabric by a multi-stage molding method; and step S106, forming a second rubber layer On the opposite side of the base cloth.

The following is a description of the embodiment of the “manufacturing method of the composite rubber material” disclosed in the present invention through specific specific examples. Those skilled in the art can understand the advantages and effects of the present invention from the contents disclosed in this specification.

The present invention may be implemented or applied through other different specific embodiments, and various details in this specification may also be based on different viewpoints and applications, and various modifications and changes may be made without departing from the spirit of the present invention. In addition, the drawings of the present invention are merely a schematic illustration, and are not drawn according to actual dimensions, and are stated in advance. The following embodiments will further describe the related technical content of the present invention in detail, but the disclosed content is not intended to limit the protection scope of the present invention.

Those skilled in the art can understand that the execution order of the steps included in the method provided by the embodiment of the present invention may not necessarily follow the order shown in the embodiment. Unless there is a special relationship between the steps, the present invention does not The execution order between steps is not limited. In addition, without affecting the spirit provided by the present invention, other steps may be inserted between the steps. The implementation examples derived in this way will also fall into the scope of the present invention.

[First embodiment]

Please refer to FIG. 2, which is a schematic view showing steps of an embodiment of a method for manufacturing a composite rubber material according to the present invention, and please refer to FIG. 3 and FIG. 4 in cooperation. In step S102, the base fabric 110 may be various knitted fabrics, plain woven fabrics, or non-woven fabrics, but is not limited thereto. The base fabric 110 may have different choices according to the application characteristics of the product. The base cloth 110 has a first surface 111 and a second surface 112 opposite to each other. A first adhesive layer 120 is formed on the first surface 111 by a coating device 210, and a second surface 112 is passed by a coating device. 212 forms a second adhesive layer 130. The order in which the first and second adhesive layers 120 and 130 are formed is not particularly limited. For example, the first adhesive layer 120 can be formed first and then the second adhesive layer 130 can be formed, or the second adhesive layer 130 can be formed first and then the first adhesive layer can be formed. 120.

In this embodiment, the first adhesive layer 120 may be made of a resin material having good adhesion to the first rubber layer 140, and an appropriate additive (such as a bridging agent) is added, and the first adhesive layer 120 is uniformly stirred and then coated on the first surface 111. . The second adhesive layer 130 can be made of a resin material having good adhesion to the second rubber layer 150, and an appropriate additive (such as a bridging agent) is added, and the second adhesive layer 130 is coated on the second surface 112 after being uniformly stirred. Then, the double-coated base fabric 110a can be smoothly rolled into a roll by a winding device (not shown).

In step S104, because the first rubber layer 140 is formed by a multi-stage molding method, it includes a plurality of coating layers 141 in the structure (as shown in FIG. 4). The “multi-stage molding method” herein refers to the steps of repeatedly coating and drying each coating layer 141 multiple times, and finally heat-treating all the coating layers 141. In this way, the amount of solvent contained in each coated compound can be reduced, and the operation of coating once and drying once can effectively accelerate the solvent volatilization and bubble discharge. At this stage, the base cloth 110 due to The second surface 112 is not coated with rubber and has a large air-permeable space.

The first rubber layer 140 can be used as a fabric layer or a primer layer. The material can be polyurethane (PU), and appropriate additives can be added as needed, such as optical brighteners, colorants, fluorescent agents, whitening agents, and processing aids. Agents, UV absorbers, antioxidants, stabilizers and surfactants. In addition, in the process of forming the first rubber layer 140, each coating layer 141 may be coated on a temporary supporting substrate R (such as release paper) and dried until all the coating layers 141 are completed. Transfer to the first surface 111 of the base fabric 110, and then perform heat treatment.

In this embodiment, the number of the coatings 141 may be two, and the weight of the first coating 141 may be 220 ± 20 g / square yard, and 100 ± 3 ° C, 90 ± 3 ° C, and 120 ± Drying at 3 ° C, the weight of the second coating layer 141 can be 157 ± 20 g / square yard, and it can be dried at a temperature of 80 ± 3 ° C, and finally can be dried at 90 ± 5 ° C. All the coating layers 141 are heat-treated at a temperature, but the present invention is not limited thereto.

Furthermore, the temporarily carrying substrate R is continuously conveyed from the first processing section A1 to the third processing section A3. When passing through the first processing section A1, the first coating layer 141 is first coated on the surface by the coating device 214, and then the first coating layer 141 is dried by the oven 220 while the bubbles are continuously discharged. When passing through the second processing section A2, the second coating layer 141 is formed on the first coating layer 141 in succession by the coating device 216, and then the second coating layer 141 is dried through the oven 222 while the air bubbles are continued. When it is discharged, the first rubber layer 140 is formed at this time. When passing through the third processing section A3, the temporary load-bearing substrate R with the first rubber layer 140 and the double-sided pasted base fabric 110a are first pressed by the pressing device 230 to make the first rubber layer 140 is adhered to the first surface 111 of the base fabric 110 through the first adhesive layer 120, and then heat-treated through the oven 224 to ensure that the first rubber layer 140 is completely formed and no air bubbles remain. After the heat treatment is completed, the double-sided adhesive-bonded and single-sided laminated base fabric 110b and the temporary supporting substrate R can be rolled up into rolls by a winding device.

In step S106, the second rubber layer 150 can be formed by the rubber extruding device 240 and adhered to the second surface 112 of the base fabric 110 through the second adhesive layer 130. The second rubber layer 150 may be used as a base material layer or a fabric layer relative to the first rubber layer 140. The material of the second rubber layer 150 may be thermoplastic polyurethane (TPU), and appropriate additives such as optical brighteners, dyes, Fluorescent agents, whitening agents, processing aids, ultraviolet absorbers, antioxidants, stabilizers and surfactants. When the above steps S102 to S106 are completed, a composite rubber material 100 that meets the requirements of functional diversity can be made.

Please refer to FIG. 5. In order to attract the attention of consumers, an appearance decoration layer 160 may be formed on the surface of the first rubber layer 140. For example, the appearance decoration layer 160 may be a bright paint layer or a matte paint layer, but It is not limited to this.

[Second embodiment]

Please refer to FIG. 6, which is another embodiment of the manufacturing method of the composite rubber material of the present invention. Schematic steps. Please also refer to FIG. 1 and FIG. 3. The manufacturing method S100 can change the execution sequence of steps S104 and S106 as needed to increase the flexibility of the manufacturing process. That is, the second rubber layer 150 may be formed on one side of the base fabric 110, and then the first rubber layer 140 may be formed on the opposite side of the base fabric 110.

Specifically, in this embodiment, firstly, the double-sided glued base fabric 110a is introduced into the processing equipment of the second rubber layer 150 in a roll, and the second rubber layer 150 is directly formed by the rubber extrusion device 240. In addition, the second rubber layer 150 is adhered to the second surface 112 of the base cloth 110 through the second adhesive layer 130 to form a double-sided glued and single-sided laminated base cloth 110b. This double-sided glued and single-sided laminated base fabric 110b is then introduced into the processing equipment of the first rubber layer 140 in a roll, and is also the same as in the third processing section A3 and with the first rubber layer. The temporary supporting substrate R of 140 is laminated, so that the first rubber layer 140 is adhered to the first surface 111 of the base fabric 110 through the first adhesive layer 120, and finally heat-treated. In this way, the composite rubber material 100 is made.

[Third embodiment]

Please refer to FIG. 7, which is a schematic view showing steps of another embodiment of a method for manufacturing a composite rubber material according to the present invention. Please also refer to FIG. 1 and FIG. 3. In the manufacturing method S100, the first and second adhesive layers 120 and 130 can be formed at different stages to increase the air permeability of the base fabric 110 and to increase the number of coating layers 141 as needed. For example, the number of the coating layers 141 included in the first rubber layer 140 may be two or more.

Specifically, in this embodiment, before the first rubber layer 140 is adhered, only the single-sided adhesive is applied, that is, the first adhesive layer 120 is coated on the first surface 111 of the base cloth 110 by the coating device 210. The single-sided adhesive-bonded base fabric 110c is then introduced into the processing equipment of the first rubber layer 140, in which the temporarily carrying substrate R is continuously conveyed from the first processing section A1 to the fourth processing section A4. When passing through the first processing section A1, the first coating layer 141 is first coated on the surface by the coating device 214, and then the first coating layer 141 is dried by the oven 220 while the bubbles are continuously discharged. When passing through the second processing section A2, the first coating layer 141 is successively formed on the first coating layer 141 through the coating device 216. The two-layer coating 141 is dried by the oven 222 and the bubbles are continuously discharged. When passing through the third processing section A3, the third coating layer 141 is successively formed on the second coating layer 141 through the coating device 218, and then the third coating layer 141 is dried through the oven 224 while the air bubbles are continued. When it is discharged, the first rubber layer 140 is formed at this time. The temporarily carrying substrate R with the first rubber layer 140 is then laminated with the single-sided adhesive base cloth 110c in the fourth processing section A4, so that the first rubber layer 140 is pasted through the first adhesive layer 120. It is bonded to the first surface 111 of the base fabric 110. After the heat treatment is completed, the single-sided adhesive and single-sided bonded base fabric 110d is formed. The single-sided adhesive and single-sided bonded base fabric 110d and the temporary The substrate R is carried and rolled up by a winding device.

Single-sided adhesive and single-sided bonded base fabric 110d are then glued on the other side, that is, a second adhesive layer 130 is coated on the second surface 112 of the base fabric 110 through a coating device 212 to form a double-sided adhesive cum The surface is bonded to the base cloth 110e. This double-sided gluing and single-sided laminating base fabric 110e is then introduced into the processing equipment of the second rubber layer 150 in a roll manner, and the second rubber layer 150 is directly formed by the rubber extruding device 240, and the first The two rubber layers 150 are adhered to the second surface 112 of the base fabric 110 through the second adhesive layer 130. In this way, the composite rubber material 100 is made.

In this embodiment, the number of the coatings 141 may be three, the weight of the first coating 141 may be 70 ± 10 g / square yard, and drying may be performed at a temperature of 100 ± 3 ° C, and the second coating may be dried. The weight of 141 can be 150 ± 10g / square yard, and can be dried at 90 ± 3 ℃ and 120 ± 3 ℃ in order. The weight of the third layer of coating 141 can be 160 ± 10g / square. Code, and can be dried at a temperature of 80 ± 3 ° C, and then all the coatings 141 can be heat-treated at a temperature of 90 ± 5 ° C, but the present invention is not limited thereto.

[Advantageous Effects of the Embodiment]

The beneficial effect of the present invention is that, in the method for manufacturing a composite rubber material provided by the embodiment of the present invention, a first rubber layer is formed on the first surface by "using a multi-stage molding method, wherein the first rubber The material layer is composed of multiple coatings " It can effectively accelerate the volatilization of solvents and the discharge of air bubbles to ensure that there are no micro air bubbles in the product.

The content disclosed above is only the preferred and feasible embodiment of the present invention, and therefore does not limit the scope of patent application of the present invention. Therefore, any 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.

Claims (8)

A method for manufacturing a composite rubber material includes the following steps: providing a base cloth having a first surface and a second surface opposite to each other; and forming a first rubber layer on the first surface by a multi-stage molding method Above, wherein the first rubber layer is composed of two coating layers, and the multi-stage molding method includes: forming the first layer of the two coating layers, and sequentially Drying at three temperatures of ± 3 ° C and 120 ± 3 ° C; forming a second layer of the two coatings, and drying at 80 ± 3 ° C; and drying the two coatings at 90 ± 5 ° C Heat treating the layer; and forming a second rubber layer on the second surface. The method for manufacturing a composite rubber material according to claim 1, wherein the material of the first rubber layer is polyurethane (PU), and the material of the second rubber layer is thermoplastic polyurethane (TPU). The method for manufacturing a composite rubber material according to claim 1, wherein the weight of the first layer in the two coatings is 220 ± 20 g / square yard, and the weight of the second layer in the two coatings It is 157 ± 20 g / square yard. A method for manufacturing a composite rubber material includes the following steps: providing a base cloth having a first surface and a second surface opposite to each other; and forming a first rubber layer on the first surface by a multi-stage molding method Above, wherein the first rubber layer is composed of three coating layers, and the multi-stage molding method includes: forming a first layer of the three coating layers, and drying at 100 ± 3 ° C; Form the second layer of the three coatings, and sequentially dry at two temperatures of 90 ± 3 ° C and 120 ± 3 ° C; form the third layer of the three coatings, and 80 ° Drying at 3 ° C; heat-treating the three coatings at 90 ± 5 ° C; and forming a second rubber layer on the second surface. The method for manufacturing a composite rubber material according to claim 4, wherein the weight of the first layer of the three coatings is 70 ± 10 g / square yard, and the weight of the second layer of the three coatings It is 150 ± 10 g / square yard, and the third of the three coatings has a weight of 160 ± 10 g / square yard. The method for manufacturing a composite rubber material according to claim 4, wherein the material of the first rubber layer is polyurethane (PU), and the material of the second rubber layer is thermoplastic polyurethane (TPU). The method for manufacturing a composite rubber material according to claim 1 or 4, wherein when the base fabric is provided, a first adhesive layer is further formed on the first surface and a second adhesive layer is formed on the first surface. On the second surface, when the first rubber layer is formed, the first rubber layer is adhered to the first surface through the first adhesive layer, and the second rubber is formed In the case of lamination, the second rubber layer is adhered to the second surface through the second adhesive layer. The method for manufacturing a composite rubber material according to claim 1 or 4, wherein when forming the first rubber layer, a first adhesive layer is first formed on the first surface, and then passes through the first The adhesive layer adheres the first rubber layer to the first surface, and when forming the second rubber layer, a second adhesive layer is formed on the second surface first, and then passes through The second adhesive layer adheres the second rubber layer on the second surface.