Mold Head Screen Changer
Your Professional Mold Head Screen Changer Supplier！
Wenzhou Shimeina Machinery Automation Technology Co., Ltd. is a modern manufacturing enterprise integrating modern technology, specializing in the research, development, production, sales, and service of Hongtu series machinery. We primarily deal in auxiliary equipment for plastic processing-granulator production lines, automatic pelletizers, crushers, plastic blown film machines, pellet conveyors, plastic bag washing machines, color mixing machines, screw conveyors.
Why Choose Us
Our Factory
We own multiple modern factory buildings, covering a total area of approximately 3,000 square meters, We possess strong technical capabilities and advanced processes.
Sales Market
Our market network has spread throughout the country and is gradually expanding into the international market. We have already achieved initial success, providing several of our plastic machinery machines to Vietnamese customers and winning their high praise.
Quality Control
We have established a comprehensive quality assurance system and after-sales service system. We are consistently committed to continuous innovation through technology and can manufacture various plastic machinery according to advanced international standards such as ANSI, API, and DIN.
Production Equipment
To ensure product precision and durability, we possess: laser cutting machines, data punching machines, data bending machines, laser welding machines, roll forming machines, professional electrical testing platforms, and complete machine operation testing benches.
Overview: Mold Head Screen Changer
A mold head screen changer (or melt filter) is a critical filtration device used in plastic extrusion and blow molding. Installed between the extruder screw and the mold/die head, its primary job is to remove impurities and unmelted material from the molten plastic stream before it enters the mold.
Product Specification
We offers the following product specifications:
|
Model |
Single/Double |
Mesh Area (mm) |
Mesh Thickness (mm) |
Motor Power (kW) |
Heating Time (min) |
|
200 |
Single |
200×200 |
45 / 270/230 |
1.1 / 1 |
40 |
|
200 |
Double |
200×200 |
45 / 270/230 |
1.1 / 2 |
40 |
|
250 |
Single |
250×250 |
50 / 340/290 |
1.1 / 1 |
40 |
|
250 |
Double |
250×250 |
50 / 340/290 |
1.1 / 2 |
40 |
|
300 |
Single |
300×300 |
60 / 390/340 |
1.5 / 1 |
50 |
|
300 |
Double |
300×300 |
60 / 390/340 |
1.5 / 2 |
50 |
Product features
Operation: Allows operators to replace clogged screens without shutting down the extruder or stopping the production line, preventing costly downtime and material waste.
Zero Pressure Drop: Advanced continuous models (such as continuous belt or dual-piston types) maintain steady head pressure and temperature, preventing product defects like parison or gauge variations.
Leak-Free Mechanisms: Utilizes high-precision machined clearances, cold circulating water, or robust hydraulic/mechanical seals to prevent the escape of high-pressure polymer or blowing agents.
Minimal Residence Time: Engineered with short flow channels to minimize the time plastic stays in the unit, which allows for rapid color or polymer grade changes.
Utomatic/Hydraulic Adjustments: Many models rely on automated, hydraulic, or servo-electric drives to advance the screen packs incrementally or shift plates without manual intervention.
Low Maintenance: Systems designed with minimal metal-to-metal contact or utilizing continuous 120-foot filter screens experience less wear and eliminate the need to constantly handle dirty, hot breaker plates.
Integrated Safety Features: Equipped with safety gates, emergency extruder shut-off capabilities, and burst discs to monitor and manage sudden pressure spikes.
Application
Plastic processing
Such as blown film, cast film, sheet, pipe, profile, plastic recycling, pelletizing, wire drawing and other production lines, the screen changer can ensure the stability and continuity of the extrusion process, improve product quality and production efficiency.
Rubber production
In the rubber extrusion process, the screen changer also plays a role in filtering impurities and ensuring the purity of the product, which is widely used in the production of various rubber products.
Ceramic Extrusion
Ceramic materials in the extrusion molding, also through the screen changer to remove impurities in the melt to ensure the quality and performance of ceramic products.
Polymer molding
Including Underwater pelletizing, masterbatch pelletizing and extrusion laminating lines, etc., screen changers also play an important role in these areas.
Structure of Mold Head Screen Changer
The screen changer is generally composed: the screen changer body (1), the filter screen (2), the fixer of filter screen, may have many holes (3), the plunger and drive unit (4) and the heater.
There are two exactly the same square filter screen on fixer. One is mounted on the melt flow path. When filter screen becomes dirty, it will be replaced by another clean one by the Hydraulic driven piston. The pushed dirt one can be removed and cleaned. Then worker fix a clean one in the hole.
The two sets of filter screen can be mounted on the same steel plate, rotate around an axis, or slide along a straight line of the guide rail. The former is operated manually by lever, while the latter slides back and forth with hydraulic pressure from one side to the other.
Precautions
Regular Maintenance and Inspection
One of the most effective ways to extend the service life of a mold head screen changer is through regular maintenance and inspection. This includes cleaning the screen changer at regular intervals to remove any accumulated debris or contaminants. The screens themselves should be inspected for signs of wear and tear, such as holes or tears, and replaced as needed.
Proper Installation and Operation
Proper installation and operation of the mold head screen changer are essential for its long – term performance. During installation, it is crucial to follow the manufacturer’s instructions carefully. This includes ensuring that the screen changer is correctly aligned with the extrusion system and that all connections are tight and secure.
Selecting the Right Screens
The choice of screens used in the mold head screen changer can have a significant impact on its service life. Different types of screens are available, each with its own characteristics and applications.
Other Services
All of our machines will be fully checked by our quality control department before the shipment. We guarantee all of our machines have a one-year warranty (quick-wear parts not included).
Training details: Operation principles, system, and structure, safety and maintenance, software processing technique, etc.
Numerous feedback from our clients have proven that our machines are stable in performance with rare malfunction. However, we would like to handle it as follows once malfunction occurs:
We guarantee that we will give you a clear reply within 24 hours.
Customer service staff will assist you in analyzing the malfunction to locate the cause.
If the malfunction is caused by improper operation of software and other soft faults, we will help solve the problem online.
We will offer plenty of online support, like detailed technical and installation instructions via email, video, and telephone.
Package & Delivery
Package
Standard export package or Custom.
Delivery
By air express, by sea.
FAQ
As one of the most experienced mold head screen changer manufacturers and suppliers in China, we warmly welcome you to buy durable mold head screen changer for sale here from our factory. All customized machines are with high quality and low price.
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