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Working principle of a rubber extruder

The working principle of a rubber extruder: In our daily lives, we encounter numerous rubber products—car tires, for instance, are made of rubber, as are many other everyday items. Many of these products can be manufactured in a single step and are widely used in our everyday routines. Some shoe soles are also crafted from rubber. During the processing of rubber, a rubber extruder is required—a specialized machine designed to extrude rubber into desired shapes and forms. Now, let’s explore the operating principles and classifications of rubber extruders.

2022

09-28

Development Trends of Rubber Extruders

The meshing zone of the screw elements in a rubber extruder exhibits a significant velocity gradient, which facilitates thorough mixing of the material within this region. Along the axial direction of the screw, the rubber extruder is divided into an feeding section, a conveying‑mixing section, and a discharging section.

2022

10-17

Current Status of Rubber Extruder Development

China’s annual output of rubber extruders is close to 80 units, with major production centers located in Qingdao, Guilin, Inner Mongolia, Shanghai, and other regions. Although numerous domestic enterprises have mastered the design and manufacturing technologies for rubber extrusion machinery, only four to five companies currently possess robust R&D and design capabilities, wielding significant influence within the industry. In the mid-1980s, BET and TR introduced and began applying their triple‑compound extrusion and double‑compound extrusion technologies in China.

2022

10-26

Do you know how to perform regular maintenance on a silicone extruder?

As a common piece of equipment for producing silicone products, the silicone extruder, like the car you drive every day, requires regular maintenance. Today, we’ll walk you through the annual maintenance of a silicone extruder.

2022

11-03

Butyl Rubber Dual-Wrist Feed Extrusion Line

Today, cold-feed rubber extruders are widely used for extrusion molding, with many rubber products manufactured using this technology. Common types of rubber products include EPDM (ethylene propylene diene monomer) rubber, silicone rubber, and natural rubber. During extrusion, these materials are typically fed into the extruder via a forced‑feed roller system, which pushes the compound into the screw barrel; only then can it be shaped at the die head. However, certain rubbers—such as butyl rubber—are notably soft and highly adhesive. Conventional feeding methods can easily cause the rubber sheet to break during extrusion, preventing continuous material feed. To address this issue, we have developed a dual‑arm feeding extruder, which is particularly suited for producing butyl rubber products. This machine employs a dual‑arm, interlocking feeding mechanism to forcibly convey the soft butyl rubber into the screw barrel, making it an ideal solution for butyl rubber processing. A typical example is automotive vibration dampers, which are produced using a dual‑arm‑fed butyl rubber extruder. Since different rubber grades exhibit distinct properties, selecting the appropriate extruder based on your product’s characteristics is essential to achieving optimal results.

2021

07-13

Our company has successfully obtained certification under the three major management systems: ISO 9001, ISO 14001, and ISO 45001.

Hebei Shuangda Rubber & Plastics Machinery Co., Ltd. is a modern enterprise integrating research and development, manufacturing, and sales of complete sets of extrusion equipment for rubber, silicone, and plastics. The company’s main products include rubber extruders, rubber hose extrusion lines, three‑layer composite sealing strip extrusion lines, silicone sealing strip production lines, plastic sealing strip production lines, plastic profile production lines, plastic pipe production lines, elastomer extruders, and other extrusion equipment, as well as production machinery for engineering seals, automotive seals, wire and cable applications, air‑conditioning hoses, braided hoses, automotive hoses, waterstop strips, and related products.

2018

07-31

Our company has successfully obtained certification for the three major management systems: ISO 9001, ISO 14001, and ISO 45001.

Hebei Shuangda Rubber and Plastics Machinery Co., Ltd. is a modern enterprise integrating research and development, manufacturing, and sales of complete sets of extrusion equipment for rubber, silicone, and plastics. The company’s main products include rubber extruders, rubber hose extrusion lines, three‑layer composite sealing strip extrusion lines, silicone sealing strip production lines, plastic sealing strip production lines, plastic profile extrusion lines, plastic pipe extrusion lines, elastomer extruders, and other extrusion equipment, as well as production machinery for engineering seals, automotive seals, wire and cable applications, air‑conditioning hoses, braided hoses, automotive hoses, waterstop strips, and related products.

2018

07-31

Current Status and Development of Rubber Extruders

Since its introduction in 1870, the rubber extruder has undergone more than a century of development, passing through three major stages: hot-feed extruders, cold-feed extruders, and screw‑type cold-feed extruders. When using a hot-feed extruder, the rubber compound must first undergo thermal refining to achieve the required temperature and plasticity before it can be extruded into shape. Because hot-feed extruders offer continuous extrusion, simple operation, high production efficiency, and stable product geometry, they continue to be employed in the manufacturing processes of many products today.

2021

07-14

Choosing an Extruder Manufacturer

An extruder is a type of plastic-processing machinery that originated in the 18th century. Depending on the flow direction of the material within the die and the angle between the screw axis and the die, extruders can be classified into straight‑angle dies, oblique‑angle dies, and other configurations. A screw extruder relies on the pressure and shear forces generated by the rotating screw to ensure thorough plasticization and uniform mixing of the material, which is then shaped through a die. Plastic extruders can generally be categorized into twin‑screw extruders, single‑screw extruders, as well as less common multi‑screw extruders and screwless extruders. Today, there are numerous extruder manufacturers, each with varying levels of production expertise; therefore, when selecting an extruder manufacturer, consumers should…

2021

06-27

Tips for Choosing an Extruder Manufacturer

With the rapid growth of the extruder industry, buyers and manufacturers are engaging in more frequent communication online. Faced with an ever‑expanding array of extruder manufacturers on the market, it can be overwhelming to navigate. Each company claims to be the genuine manufacturer, leaving buyers unsure how to make the right choice. We’ve compiled a few tips for selecting an extruder manufacturer, hoping they’ll prove helpful.

2021

06-24

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