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Advantages of Pin-Type Extruders

Advantages of Pin‑Type Extruders Pin‑type rubber extruders are primarily used to manufacture high‑quality rubber products, such as rubber hoses and rubber cables, which are produced using this type of extruder. When selecting a pin‑type rubber extruder, it is essential to choose the appropriate model and equipment configuration based on the product’s size and physical properties. However, certain rubber products—such as rubber sealing strips—are not well suited for production with an extruder barrel equipped with pins. During operation, a pin‑type rubber extruder must first regulate the temperature…

2020

09-28

Silicone seal strip extruder

The silicone sealing strip extruder and silicone strip extruder are conventional cold-feed single-screw extruders. They consist of a die head, barrel, forced feeding device, frame, cooling system, drive mechanism, lubrication system, drive motor, and electrical control cabinet. The extruder frame features an integral design, resulting in a compact overall structure. The electric motor is mounted on the frame and secured with bolts at its base. The motor drives a reduction gearbox; when hot silicone enters the barrel via the forced feeding device, the rotation of the screw conveys the material toward the die head. Along this path, the heating and cooling systems maintain the material within the specified process parameters while compressing and plasticizing it. Due to the screw…

2020

09-28

What key issues should be addressed when operating a rubber filter press?

What key issues should be addressed when using a rubber extruder? In the rubber‑production process, virtually every enterprise relies on a piece of equipment known as an extruder. However, there are several critical considerations that companies must keep in mind during operation. Failure to heed these points can shorten the equipment’s overall service life. Before use, the extruder must be preheated, as the material being processed needs to reach a softened state to ensure smooth operation. Only after reaching the required temperature can the extruder proceed with the extrusion process.

2020

09-29

Rubber extruder

Rubber extruders can produce a wide variety of products, with rubber sealing strips and rubber hoses being among the most common. Different products require different types of rubber extruders during manufacturing; however, regardless of the specific model, the fundamental operating principle remains essentially the same. Before starting the extruder, it is essential to first raise the temperature of the barrel and screw to the desired set point. Only when the temperature reaches the required level should the equipment be operated. Once heated, the rubber’s flow characteristics improve, and as the screw continuously rotates, the rubber within the barrel is conveyed forward by the screw threads.

2020

09-29

Butyl rubber extruder

The butyl rubber extruder is specifically designed to accommodate the unique properties of butyl rubber. Because butyl rubber is both soft and highly adhesive, traditional forced-feed dies often cause the material to surge unpredictably, entering the gaps between rotating bearings and, over time, leading to bearing damage. To address this issue, we have developed a dual‑arm conjugate feed extruder. This innovative feed system, paired with the extruder’s barrel and screw, enables the machine to handle block‑shaped rubber. Once the butyl rubber enters the extruder barrel, it undergoes shearing, compression, and other forms of processing by the extruder screw, after which…

2020

09-30

Rubber Extruder Temperature Settings

Before producing any product, the rubber extruder must first be brought up to temperature. Only when the temperature reaches the desired level can the equipment be started and the rubber feed system loaded with rubber. Once the rubber enters the barrel via the feed system, it is heated and plasticized, while the screw subjects it to shearing, compression, mixing, and other processing steps. The material is then extruded through the die at the head of the extruder, forming the desired product shape. During continuous operation, the rubber continuously interacts with the barrel and screw, generating sustained pressure that in turn produces heat—self‑generated by the process itself. As the equipment runs, the temperature gradually increases…

2020

09-30

The process and operating procedures of rubber filter extruders

For thin-walled parts or products with stringent quality requirements, it is necessary to remove impurities from the rubber compound to prevent adverse effects on airtightness and tear resistance. During the filtration process, sulfur and ultra‑fast accelerators must not be added to the compound to avoid scorching when the material temperature rises excessively. Prior to filtration, the compound should be hot‑milled on an open mill to enhance its thermoplasticity. The hot‑milling and feeding procedures are identical to those used in standard extruders. As for the temperatures of the various sections of the filter machine: the barrel should be maintained at 40–50°C, the die head at 60–90°C, and the filter plate at 60–80°C. After filtration, the temperature of NR compound must not exceed 130°C; for compounds containing 30% SBR, the temperature should also remain below 140°C. Following filtration, the compound…

2020

10-11

The Process and Operating Procedures of Rubber Filter Presses

For thin-walled products or those with stringent quality requirements, it is essential to remove impurities from the rubber compound to prevent adverse effects on the product’s air tightness and tear resistance. During the filtration process, sulfur and ultra‑fast accelerators must not be added to the compound to avoid scorching when the compound temperature rises excessively. Prior to filtration, the compound should be hot‑mixed on an open mill to enhance its thermoplasticity. The hot‑mixing and feeding procedures are identical to those used in standard extruders. As for the temperatures of the various sections of the filter machine: the barrel should be maintained at 40–50°C, the die head at 60–90°C, and the filter plate at 60–80°C. After filtration, the temperature of NR compound must not exceed 130°C; for compounds containing 30% SBR, the temperature should also remain below 140°C. Following filtration, the compound…

2020

10-11

What are the key features of an integrated compound rubber extruder?

Hebei Shuangda Rubber and Plastics Machinery Co., Ltd. has developed a new integrated composite extruder that combines two sets of equipment into a single frame, offering customers convenient commissioning and space-saving benefits. Traditional extruders could only produce products in one color or from a single material, resulting in limited color options and monotonous output with little possibility for color blending. This integrated composite extruder simultaneously extrudes products using both the main and auxiliary units, achieving a two-color effect within its unified composite die head. As a result, it effectively addresses existing technical limitations, enabling the production of more diverse and colorful extruded goods. 1. Product Features The composite rubber extruder is a cold-feed extruder that combines two colors through two separate extruders, allowing the production of two‑color rubber products. These include air‑ventilation connectors for cutting and welding, rubber winding tubes, rubber knitted tubes, and other items. The finished products exhibit excellent properties such as aging resistance, ozone resistance, high pressure resistance, flexibility, light weight, superior bending performance, minimal deformation, and a smooth, aesthetically pleasing surface. 2. Equipment Process The complete production line comprises a chiller, a composite rubber extruder, a lifting water tank, and a small traction machine equipped with a PLC‑controlled cutting unit. This setup can manufacture small‑size rubber tubes, rubber strips, and similar products. Featuring fully automatic touch‑screen control, an integrated feeding and conveying system, and built-in functions for material cutting and pricing, the equipment maximizes time, labor, and manpower savings. Additionally, the extruder can be customized to suit different product types and specifications.

2020

11-14

Hebei Shuangda Exhibits at the 6th China Linyi Plastics Industry Expo 2020

Hebei Shuangda’s Exhibition Participation: The 6th China Linyi Plastics Industry Expo 2020, held from November 22–24, 2020 at the Linyi International Convention and Exhibition Center (Linyi Economic and Technological Development Zone, Shandong Province). Booth No.: D1. Our equipment includes composite plastic extruders, integrated automatic pipe‑cutting and pulling machines, rubber hose extruders, and more. We warmly welcome both new and existing customers to visit! Hebei Shuangda Rubber & Plastic Machinery Co., Ltd. is a modern enterprise specializing in the R&D, manufacturing, and sales of complete sets of extrusion machinery for rubber, silicone, and plastics. Located in Liyuantun Town, Wei County, Xingtai City, Hebei Province, our company enjoys an excellent geographical location with convenient transportation. We currently employ 120 staff members, including 30 technical personnel and 8 senior engineers. Our professional technical team ensures stable and reliable product performance. Our main products include rubber extruders, rubber hose extruders, three‑layer composite vulcanization production lines, elastomer extruders, and other extrusion equipment, as well as production machinery for engineering seals, automotive seals, cable and wire insulation, air‑conditioning rubber hoses, automotive oil hoses, waterstop strips, and related applications. Adhering to the principle of “customer‑centricity and integrity,” we regard equipment quality as paramount. We provide high‑quality equipment and services, along with comprehensive technical support. We sincerely invite domestic and international customers to visit our factory for guidance and inspection. We look forward to establishing long‑term cooperation with you to achieve mutual success.

2020

11-17

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