Technical Articles
Material and structural parameters of blown film machine screw and barrel
The screw of a blown film extruder is the core component of the extrusion system, and its structure directly affects plasticizing quality, extrusion stability, and film uniformity. A typical blown film extruder screw uses a single-screw design, divided into three functional zones: the feeding zone, the compression zone, and the homogenizing zone. These three zones work together to achieve solid conveying, melt plasticizing, and pressure equalization output. Feeding Zone: Located…
How to determine if a tapered twin-screw screw is installed correctly?
To determine if a conical twin-screw extruder is worn, the key is to observe four major signals: decreased output, deteriorated melt quality, abnormal energy consumption, and increased clearance. These are often early signs of wear and can be detected by operators even before the equipment is shut down. Wear usually doesn’t happen suddenly but is a slow, cumulative process. The first and most obvious signal is decreased output: even at…
How to reduce the degree of wear of the injection molding machine screw
The injection screw is the core component of the injection molding machine, and the screw is operated under high temperature, high pressure, high mechanical torque and high friction environment for a long time, and the wear problem is inevitable. Generally, the screw has been surface nitrided to increase the surface hardness, that is, Improve anti-wear ability. However, if the cause of wear is neglected, and the wear is not reduced…
What are some common production failures of blow molding machines?
I. Blow Molding Machine Not Dispensing Material Plastic Blow Molding Equipment What are the Common Production Faults of Blow Molding Machines? – Zhoushan jed Machinery Co., Ltd., Extruder Screws, Injection Molding Screws, Zhoushan Screws, Screw Factory II. Black Substances on the Surface of Blow Molded Products There are many reasons why black mineral deposits or short black streaks may appear on the transparent parts of blow-molded products. III. Surface Bubbles…
The customized extruder from the customer will be shipped today
The company shipped a non-standard extruder for customers today, used for double-layer co extrusion of EVA materials.
What are the points to note when using the screw barrel of an injection molding machine?
The screw barrel of the injection molding machine often sticks to the material, which not only affects the progress but also affects the quality of the product, and it is also troublesome in the process of troubleshooting. Different plastics are due to their melting speed, heat absorbed during melting, melt viscosity, and water absorption The difference in characteristics such as rate, thermal stability, etc., is very different for the shape…
Warmly welcome customers from Europe to visit our factory
Warmly welcome customers from Europe to visit our factory.This is our long-term cooperation customer, the first time to visit our factory.It is a great honor for us to have the opportunity to host you. I hope you can have an in-depth understanding of our corporate culture, technical strength and production process. We have arranged a series of colorful activities such as technical exchanges, factory visits, business negotiations and cultural exchanges.…
Cincinnati Extruder Screw: Replacement, Compatibility, and Performance Improvement for PVC Lines
A Cincinnati extruder screw is a core component in many long-running PVC extrusion lines worldwide. If you are searching for Cincinnati extruder screw, you are most likely looking for a replacement screw, a wear-resistant upgrade, or a way to restore stable output on an existing machine. This article explains what to consider to achieve reliable performance and long service life. Cincinnati conical twin-screw specifications φ52/φ105 φ55/φ110 φ58/φ125 φ62/φ130 φ68/φ147 φ72/φ151 φ35/75 φ40/84 φ45/90 φ45/97 φ45/100…
Profile Extrusion Screw: Design, Replacement, and Stability for PVC Profile Production
A profile extrusion screw is one of the most critical components in PVC profile extrusion lines. Its design directly influences surface quality, dimensional accuracy, output stability, and long-term operating cost. If you are searching for profile extrusion screw, you are likely facing issues such as unstable profiles, surface defects, output fluctuation, or rapid wear. This article explains what truly matters for stable profile extrusion. Why Profile Extrusion Requires a Dedicated Screw Design PVC profile extrusion…