How to make PVC patches

PVC patch is a widely used repair material on materials such as fabric, leather and plastic. It has the properties of high temperature resistance, waterproof, UV resistance and corrosion resistance, so it is widely favored. In our life, we can see a lot of items repaired with PVC patches, such as clothes, shoes, bags and so on.

To make PVC patches, you need to prepare PVC raw materials and molds.PVC raw materials are important materials for making PVC patches. Generally speaking, PVC raw material is made from vinyl monomer and acrylonitrile-based monomer through polymer chemical reaction. It has high chemical resistance and plasticity, and the hardness and toughness can be adjusted as needed. Molds are an important tool in the PVC patch making process, which can be made in various shapes and sizes as needed to ensure that the patch can fit tightly to the material being repaired.

During the PVC patch making process, liquid PVC can be poured onto the mold using a drip molding machine. The drip molding machine sprays the liquid PVC directly into the center of the mold by spraying or dripping it, and then molds it inside the mold. In addition, PVC patches of different shapes, sizes and thicknesses can be realized by controlling the nozzle size of the drip molding machine and the amount of liquid PVC poured.

Finally, the poured PVC is placed in an oven for molding. The oven temperature is generally between 100°C and 180°C. The baking time depends on factors such as the thickness and aspect ratio of the PVC patches. While the temperature of the oven increases, the molecular structure of the PVC patches also changes. The higher the temperature, the greater the change, and the PVC patches become harder and more resistant to water, heat, acid and alkali, and so on.

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In short, to make PVC patches, you need to prepare PVC raw materials and molds, and use a drip molding machine to pour liquid PVC onto the molds, and finally put them into the oven for shaping. The production efficiency and product quality of PVC patches can be improved by constantly adjusting the production process and improving the technology to meet the needs of different customers.