Acrylic materials are made of resin, and after the acrylic raw materials are melted, they are usually processed by casting or extrusion processes. Currently, most of them are imported materials. Acrylic materials are made of resin, and after the acrylic raw materials are melted, they are usually processed by casting or extrusion processes. Currently, most of them are imported materials.
Acrylic, also known as PMMA or acrylic, originates from the English word acrylic (acrylic plastic). The chemical name is polymethyl methacrylate, which is an important plastic polymer material developed earlier. It has good transparency, chemical stability, weather resistance, easy dyeing, easy processing and beautiful appearance, and is widely used in the construction industry. Organic glass products can usually be divided into cast plates, extruded plates, and molded plastics.
It is a normal phenomenon for acrylic products to have bubbles inside, but it is also necessary to evaluate the number of bubbles. Because of a well crafted acrylic product, bubbles are usually located at the bottom of the finished product, and are very, very small. There will be no bubbles on the surface of the product. The fewer bubbles, the more exquisite the product's craftsmanship. In addition to measuring the workmanship of an acrylic customized product by the presence of bubbles, the color of the acrylic can also be used to determine its quality. If the internal color of acrylic is naturally radiant and the trajectory of color activity can be clearly seen, it can indicate that the raw materials of acrylic panels are produced from pure new materials, rather than recycled materials.
Analysis of the quality of acrylic products producing bubbles: 1. During screen printing, the ink itself has bubbles or uneven viscosity. 2. Screen printing speed is too fast or uneven. 3. The surface of acrylic finished products is covered with dust and oil stains. Before making acrylic products, the methods to solve bubbles are as follows: 1. Extend the drying time and appropriately increase the stability of the drying material. 2. Adjustments can be made by extending the holding time and reducing the taper of the gate. 3. When designing molds, efforts should be made to avoid excessively thick parts and significant differences in thickness on the plastic parts of acrylic products. 4. The flow channel should be shortened and thickened to eliminate dead corners of air storage in the channel and eliminate the problem of poor mold exhaust. 5. When using a fan-shaped gate, the cross-sectional area of the gate should not be too small, especially when forming several plastic parts with different shapes at the same time. It must be noted that the size of each gate is proportional to the weight of the plastic part.