Extrusion production line - plastic extrusion profile production line

Plastic extrusion profile production line is a kind of plastic machinery products, besides this one, there are also plastic pipe production line, plastic sheet production line and so on. The plastic extrusion profile production line is mainly used for the production of plastic door and window profiles, plastic decorative panels, PVC foam profiles and other plastic products.
According to the molding state of the co-extruded material
The plastic profile extrusion process can be divided into two types: pre-coextrusion and post-coextrusion according to the molding state of co-extruded materials. Pre-coextrusion refers to the composite molding of two materials in the process of incomplete molding; post-coextrusion refers to the composite molding of one material with another material after it has been fully formed. The advantage of post-coextrusion is that waste can be utilized and the economy is better.
By extrusion material
Plastic profile extrusion process can be divided into organic co-extrusion and inorganic co-extrusion according to different extrusion materials. Organic co-extrusion includes pre-coextrusion of the same material (such as pre-coextrusion of fine materials and recycled materials), pre-coextrusion of different materials (such as pre-coextrusion of PMMA and PVC) and post-coextrusion of soft and hard PVC; inorganic co-extrusion It can be divided into aluminum-plastic composite co-extrusion and steel-plastic composite co-extrusion.
Here we focus on post co-extrusion extrusion, aluminum-plastic composite profile co-extrusion, steel-plastic composite profile co-extrusion and two-color co-extrusion technology.
Compared with the traditional front co-extrusion (hereinafter referred to as FCE) technology, the post-coextrusion plastic profile extrusion process has remarkable characteristics such as simple process, flexible application, low scrap rate, easy recycling, and controllable bonding strength. At present, this technology is mainly used in the manufacture of profiles for doors and windows with sealing strips.
The traditional pre-co-extrusion plastic profile extrusion technology is a one-time molding technology. More than two extruders extrude molten materials with different rheological behaviors or different colors to the same molding die. Vacuum is drawn in the sizing sleeve, cooled and set.