TW201607725A - Method of manufacturing TPU and PVC composite materials - Google Patents

Abstract

The present invention discloses a method of manufacturing TPU and PVC composite materials comprising steps of implementing paperhanging over the positive and negative surfaces of the weaving to take as the substrate, then, pasting thermoplastic polyurethane (TPU) flexible film on the positive surface of the substrate by way of hot rolling process, pasting polyvinyl chloride (PVC) flexible film on the negative surface of the substrate to manufacture the composite material by the TPU and the PVC. With the method of this invention, two different materials of TPU and PVC can be combined well. Its product is a nontoxic environmental protection material that can be applied in aspects of life-saving, exercise, and people's livelihood and further satisfies the requirement of process convenience.

Description

Method for manufacturing TPU and PVC composite material

The invention relates to a composite material of TPU and PVC, in particular to a manufacturing method of a composite material of TPU and PVC.

In recent years, environmental awareness has risen. Therefore, the choice of environmentally friendly materials for various materials for civilian products is a priority. Among them, the thermoplastic polyurethane (TPU) film is a mature non-toxic environmentally friendly material, and it is also a polymer elastomer with wear resistance. It has the characteristics of tensile strength, high temperature resistance, low temperature resistance and no cracking. Its products cover the range of industrial applications and civilian necessities, and can be used in lifesaving, footwear, sporting goods, garments, medical products, etc.

Polyvinyl chloride (PVC) is the most important and most commonly used type of artificial polymer, mainly because it has great variability. It can be used in the process of manufacturing PVC products with different uses and needs. Agents and additives to change their physical or chemical properties. The biggest characteristic of PVC is that after adding liquid plasticizer, the glass transition temperature (Tg point) will start to decrease. Because it can be plasticized, it can produce semi-rigid to soft material with wide elastic modulus. This is soft PVC with practicality. the reason. Moreover, the processing range of PVC is very wide, and it is a widely used polymer because it can be used with various polymerization degrees and various types of modifiers to obtain products with completely different physical properties.

However, if PVC and TPU are combined, a plurality of materials may be lapped during the processing, which may cause inconvenience in operation and complicated processing; therefore, the applicant of the present invention specially develops a manufacturing method of TPU and PVC composite material for this purpose. Make the product choice and use diversified, and achieve the purpose of product processing convenience.

In view of the above, the present invention is directed to the absence of the prior art, and the main object thereof is to provide a method for manufacturing a TPU and a PVC composite material, which are formed on both sides of a substrate by a hot rolling process. Made of TPU and PVC composite materials, the products are non-toxic environmentally friendly materials, can have the excellent characteristics of the two materials, and can meet the needs of processing convenience.

In order to achieve the above object, the present invention provides a method for preparing a TPU and a PVC composite material, the steps of which are to first paste the front and back sides of the fabric, then dry it to become a substrate, and then, to heat the polyurethane. (TPU) forms a TPU elastic film by hot calendering and adheres to the front surface of the substrate, and forms a PVC elastic film by hot rolling processing with polyvinyl chloride (PVC) and adheres to the reverse side of the substrate to form a TPU. With PVC composites.

In the present invention, the surface of the fabric is subjected to a paste treatment, and then the hot rolling processing method is adopted to enable the TPU and the PVC different materials to be well combined, and a product having both the characteristics of the TPU and the PVC can be obtained, and The product is non-toxic and environmentally friendly material, which can be applied to lifesaving, sports, people's livelihood, etc., and also takes into account the needs of processing convenience.

The purpose, technical content, features and effects achieved by the present invention will be more readily understood by the detailed description of the embodiments.

Please refer to FIG. 1 , which is a flow chart of a method for manufacturing a TPU and a PVC composite material according to an embodiment of the present invention.

First, as in step S01, the paste is applied to the front side of the fabric by using a paste machine, and the fabric is provided with a stable flatness. The paste may be polycarbonate (PC) or polyurethane (PU). The base paste contains 100 parts by weight of PC or PU resin and 5-10 parts by weight of isocyanates bridging agent, and uses toluene as a solvent to adjust the viscosity to 80,000 to 90000 centipoise (cps). To form a coating resin, and then heat and dry, the heating temperature is 100 to 150 ° C. Similarly, the reverse side of the fabric is also coated with a layer of paste, and the fabric is provided with a stable flatness. The paste may also be a paste of polycarbonate (PC) or polyurethane (PU) substrate, the composition of which comprises 100 weights. a PC or PU resin and 5 to 10 parts by weight of an isocyanates bridging agent, and using toluene as a solvent, adjusting the viscosity to 80,000 to 90000 centipoise (cps) to form a coating resin, and then Heat and dry, heating temperature is 100~150 °C. After the fabric is coated, it becomes a substrate.

It should be noted that, as used in the present specification, the amounts of various materials used are in units of "parts by weight". According to the content of the present embodiment, the material required for the paste of the PC or PU substrate is contained in a ratio of 100. : 5 to 10 (parts by weight / part by weight) of PC or PU resin: isocyanate bridging agent, that is, the amount of isocyanate bridging agent used is 5 to 10 weight per 100 parts by weight of PC or PU resin. For example, if the weight is converted into kilograms, it is equivalent to 100 to 10 kilograms of PC or PU resin. The isocyanate bridging agent is used in an amount of 5 to 10 kg. The following description is also the case and will not be described again.

Next, in step S02, the thermoplastic polyurethane (TPU) is sent to a calendering laminating machine, preheated at a high temperature of 70 to 155 ° C, and subjected to thickness and width control to be calendered into a TPU elastic film, and then The front side of the material is laminated, and the bonding pressure is controlled to 5~10 kg/cm 2 (kg/cm ² ).

Then, in step S03, the polyvinyl chloride (PVC) is sent to the calendering laminating machine, preheated at a high temperature of 100 to 180 ° C, and subjected to thickness and width control to be calendered into a PVC elastic film, and then attached to the opposite side of the substrate. The bonding pressure is 5 to 10 kg/cm 2 (kg/cm ² ). Finally, TPU and PVC composites can be constructed.

As shown in FIG. 2, the TPU and PVC composite material 10 obtained in the above embodiment is composed of a substrate 20 and a TPU elastic film 30 and a PVC elastic film 40 on the front and back sides of the substrate 20, and the substrate. 20 includes the coating resins 22 and 23 formed by the woven fabric 21 and the woven fabric 21 on the front and back sides of the woven fabric.

In the present invention, a suitable woven fabric 21 can be selected according to the characteristics of the finished product. For example, a plain woven nylon fabric can be used, and the high-temperature process is less likely to shrink than the general non-woven fabric. Moreover, based on the purpose of making the woven fabric 21 and the TPU elastic film 30 and the PVC elastic film 40 adhere to each other, the paste is applied as a paste, and the paste is applied by a knife and dried to form the substrate 20 by heating. For use in the calendering laminating machine. Then, through a calendering laminating machine, a thermoplastic polyurethane (TPU) is first formed into a TPU elastic film 30, which is bonded to the front surface of the substrate, and then polyvinyl chloride (PVC) is molded into a PVC elastic film 40, and a base. The material 20 is laminated on the reverse side to form a TPU and PVC composite material 10.

According to the manufacturing method of the TPU and the PVC composite material provided by the present invention, since the physical property of the TPU belongs to the rubber and the plastic, various types of products can be manufactured, including an injection grade, an extrusion grade, a blown film grade, and the TPU can be According to the different needs of various industrial products, improve and enhance its different properties, such as mechanical strength, wear resistance, cold resistance, UV resistance, tortuosity, good elongation, biocompatibility, etc., and PVC is the most artificial polymer The most important and most commonly used one is mainly because it has great variability, so the product made by the invention under the combination of the two materials will be more versatile and functional.

In order to confirm the purpose and efficacy of the present invention, the TPU and the PVC composite material are sent to the Central Laboratory of the Health Company for analysis and testing, and the surface can pass the data of the 12-week aging test, which is an ideal anti-aging effect, showing Its products are extremely reliable.

In summary, the method for manufacturing a TPU and a PVC composite material according to an embodiment of the present invention is to use a coating resin as a paste on the front and back sides of the woven fabric to perform a paste as a substrate, and then use hot pressing. In the processing method, the TPU elastic film and the PVC elastic film are sequentially attached to the front and back surfaces of the substrate to obtain a TPU and PVC composite material. Through the method of the invention, the two different materials of TPU and PVC can be well combined, and the product is non-toxic and environmentally friendly material, and can be applied to lifesaving, sports, people's livelihood, etc., especially for water or road sports goods, ships. Terminal products such as supplies, in addition, can also avoid problems such as inconvenient operation and complicated processing in the process. Therefore, the invention can not only produce products with different materials of TPU and PVC on both sides, but also achieve diversification and versatility of the products, and at the same time, can meet the needs of industrial processing convenience, and is extremely economical.

The above is only the preferred embodiment of the present invention and is not intended to limit the scope of the present invention. Therefore, any changes or modifications of the features and spirits of the present invention should be included in the scope of the present invention.

10‧‧‧TPU and PVC composite materials
20‧‧‧Substrate
21‧‧‧Weaving
22‧‧‧Coating resin
23‧‧‧Coating resin
30‧‧‧TPU elastic film
40‧‧‧PVC elastic film

Fig. 1 is a flow chart showing a method of manufacturing a TPU and a PVC composite material according to an embodiment of the present invention. 2 is a cross-sectional structural view of a TPU and PVC composite material provided by an embodiment of the present invention.

Claims (6)

The invention relates to a method for manufacturing a TPU and a PVC composite material, comprising the steps of: pasting a front side and a back side of a fabric, and then heating and drying to form a substrate; and heating the thermoplastic polyurethane (TPU) to heat Forming a TPU elastic film and bonding it to the front surface of the substrate; and forming a PVC elastic film by hot rolling processing with polyvinyl chloride (PVC) and bonding it to the reverse side of the substrate to form the TPU With PVC composites. The method for manufacturing a TPU and a PVC composite material according to claim 1, wherein the step of smearing the fabric is performed by using a paste machine to apply a polycarbonate (PC) or a polyurethane to the front and back sides of the fabric in a knife-and-mortar manner. (PU) substrate paste. The method for producing a TPU and a PVC composite material according to claim 2, wherein the paste comprises 100 parts by weight of PC or PU resin and 5 to 10 parts by weight of an isocyanate bridging agent, and is adjusted using toluene as a solvent. The viscosity is 80000~90000 centipoise (cps), and the temperature of heating and drying is 100~150 °C. The method for manufacturing a TPU and a PVC composite material according to claim 1, wherein the TPU is preheated at 70 to 155 ° C, and then bonded to the front surface of the substrate by hot rolling, and the bonding pressure is 5~. 10 kg / cm ^ 2 (kg / cm ² ). The method for manufacturing a TPU and a PVC composite material according to claim 1, wherein the PVC is preheated at 100 to 180 ° C, and then bonded to the opposite side of the substrate by hot rolling, and the bonding pressure is 5~. 10 kg / cm ^ 2 (kg / cm ² ). The method for producing a TPU and a PVC composite material according to claim 1, wherein the TPU and the PVC are separately fed into a calendering laminator to be molded and bonded to the substrate.