Introduction of Acrylic Panel Processing-- JRPanel

Last week we introduced the characteristics and uses of acrylic materials in our blog. I believe everyone has a certain understanding of acrylic panels. Today we will give you a detailed introduction to the processing process of acrylic panels to help you better understand the acrylic processing technology of JRPanel.

Process characteristics

1. Acrylic contains polar pendant methyl groups and has obvious hygroscopicity. The water absorption rate is generally 0.3%-0.4%. The acrylic sheet must be dried before molding. The drying condition is 80℃-85℃ for 4-5h.

2. Acrylic has obvious non-Newtonian fluid characteristics in the temperature range of molding and processing. The melt viscosity will decrease significantly with the increase of shear rate, and the melt viscosity is also very sensitive to temperature changes. Therefore, for the molding process of polymethyl methacrylate, increasing the molding pressure and temperature can significantly reduce the melt viscosity and achieve better fluidity.

3. The temperature at which acrylic starts to flow is about 160℃, and the temperature at which it starts to decompose is higher than 270℃, which has a wide processing temperature range.

4. Acrylic melt viscosity is higher, cooling rate is faster, and products are prone to internal stress. Therefore, the process conditions are strictly controlled during molding, and post-processing is also required after molding.

5. Acrylic is an amorphous polymer, the shrinkage rate and its variation range are small, generally about 0.5%-0.8%, which is conducive to forming plastic parts with high dimensional accuracy.

6. Acrylic has good cutting performance, and its profile can be easily machined to various required sizes.

Processing technology

1. Cutting: Use a cutting machine to cut the acrylic sheet. It is necessary to clarify the size of the acrylic product in order to accurately open the material to avoid material waste.

2. Engraving: After opening the material, perform preliminary engraving on the acrylic sheet according to the shape requirements of the acrylic product, and engrave it into different shapes.

3. Polishing: After cutting, engraving, and perforating, the edges are relatively rough and easy to scratch your hands. Therefore, the polishing process is used. Polishing is also divided into grinding wheel polishing, cloth wheel polishing and fire polishing. Different options should be selected according to the product. Polishing method. See the polishing process of acrylic products for specific methods.

4. Trimming: After cutting or engraving treatment, the edge of the acrylic sheet is relatively rough, so the trimming machine must be used for the acrylic trimming.

5. Hot bending: Acrylic can be changed into different shapes through hot bending. In hot bending, it is also divided into local hot bending and overall hot bending. For details, you can check the hot bending process of acrylic products.

6. Perforation: This process is based on the needs of acrylic products. Some acrylic products have small round holes. This step requires perforating.

7. Silk screen printing: This step is generally when customers need to display their own brand LOGO or slogan, they will choose silk screen printing. The screen printing is divided into two kinds of screen printing methods: monochrome screen printing and four-color (CNYK) screen printing. You can learn more about the screen printing process of acrylic products.

8. Tear the paper: The tearing process is a processing step before the silk screen and hot bending process, because the acrylic sheet will have a layer of protective paper after it leaves the factory. The sticker on the acrylic sheet must be removed before the silk screen and hot bending.

9. Gluing and packaging: these two steps are the last two steps in the acrylic product process, and the completion of the entire acrylic product part assembly and packaging before leaving the factory.