How to improve the gloss of extruded profiles

In recent years, China's extrusion profiles plastic products industry has accelerated the pace of research and development and application, the rapid development of the plastic industry, its production and sales volume ranks first in the world. Some profiles have requirements for surface smoothness and gloss brightness. How can we improve the surface brightness of extruded profiles? Dongguan Yimei Plastic Products Co., Ltd. will introduce to you today.

1. Effect of Activated Calcium Carbonate Content on Surface Luminance of Extruded Profiles

Filler is indispensable in the production of profiles. It can reduce costs and improve some properties of plastic profiles, such as reducing the size change rate and increasing rigidity of profiles after heating. Activated calcium carbonate is a kind of filler commonly used in profile production, and its amount will affect the surface brightness of profile.

2. The influence of the amount of PE wax on the surface brightness of extruded profiles

PE wax is a common external lubricant. In the process of processing, under the action of pressure, it is easy to extrude from the mixture material and migrate to the surface. The PE molecules are aligned in orientation, and the polar groups are facing the metal surface. Through physical adsorption and chemical bonds, a lubricant molecular layer is formed. Therefore, it can reduce the friction force on the surface of polymer and equipment and improve the surface polish of profiles. Brightness. Therefore, reasonable lubricant dosage is the key to ensure the profile performance and surface brightness.

3. Effect of ACR dosage on surface brightness of extruded profiles

As a processing aid, ACR can improve the processing properties of rigid PVC. It can increase the friction coefficient between resin and machinery, change rigid PVC from sliding wall to sticking wall, increase shear stress and get good plasticization. Therefore, proper dosage of ACR and its good coordination with other additives will greatly improve the surface and intrinsic properties of profiles. Only in this way can we have a good surface brightness.

4. Effect of Die Surface Quality on Surface Luminance of Extruded Profiles

Die is one of the core equipment in profile extrusion production. The surface quality of die directly affects the surface brightness of profile, especially the surface quality of finalizing die. Because the hot billet is shaped by vacuum adsorption and cooling. Because of the vacuum adsorption, the surface of the billet moves along the surface of the mould. If the polishing quality of the profile die surface is not good, it will inevitably lead to the decline of the profile surface quality.

In addition, due to improper maintenance or material corrosion, the smoothness of the profile will also be reduced, which will inevitably affect the surface quality of the profile. Therefore, the quality of die surface is an important factor affecting the surface brightness of profiles.