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2021 Greater Bay Area International Rubber Technology Exhibition

Hebei Shuangda is exhibiting at the 2021 Greater Bay Area International Rubber Technology Exhibition, held from March 31 to April 2, 2021, at the Tanzhou International Convention and Exhibition Center in Foshan, Guangdong (No. 1 Gongzhan Road, Beijiao Town, Shunde District, Foshan). Our booth number is 6B355. Our equipment on display includes an integrated rubber extrusion machine and a compact cutting machine. For inquiries, please contact Manager Jiang at 13463938789. We warmly welcome both new and existing customers! Hebei Shuangda Rubber & Plastics Machinery Co., Ltd. is a modern enterprise integrating R&D, manufacturing, and sales of complete sets of extrusion machinery for rubber, silicone, and plastics. Our main product lines 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. We also provide production machinery for engineering seals, automotive seals, wire and cable applications, air-conditioning hoses, braided hoses, automotive hoses, waterstop strips, and related products.

2021

03-23

The 34th China International Exhibition on Plastics and Rubber Industries, 2021

Hebei Shuangda Rubber & Plastics Machinery Co., Ltd. will be exhibiting at the 34th China International Exhibition on Plastics and Rubber, held in Shenzhen in 2021. The event takes place from April 13 to 16, 2021, at the Shenzhen International Convention & Exhibition Center, No. 1 Zhancheng Road, Fuhai Subdistrict, Bao’an District, Shenzhen, Guangdong Province. Our booth number is 6M07 (Hall 6). Our product lineup includes: a composite plastic extrusion integrated machine, a stainless steel compartment-type lift‑type water tank, a compact cutting machine, and a composite rubber extrusion integrated machine. We warmly welcome both new and existing customers to visit our booth! The composite plastic extruder combines two extruders into one unit, enabling the production of two‑color or double‑layer plastic products. It is primarily used for processing plastics such as PVC, PE, PP, ABS, and TPE. When equipped with various auxiliary machines and die heads, it can directly produce two‑color or double‑layer plastic components—including water pipes, oil hoses, gas tubes, sealing strips, and more—through plasticization and extrusion molding.

2021

04-11

What is the working principle of a butyl rubber double-station rewinder?

Working principle and applications of the dual-station rewinder: The butyl tape dual‑station rewinder consists of a power reduction unit, tension control system, and meter counter, offering easy operation and precise control. It is equipped with a meter counter that transmits signals to accurately track production length, ensuring simple handling. With independent control for each station, operators can change rolls without stopping the machine, thereby boosting output. Designed and manufactured by Hebei Shuangda Rubber & Plastics Machinery Co., Ltd., this dual‑station rewinder is specifically used in the production of butyl tape. It helps minimize bending, twisting, and deformation, improving the yield of qualified products. Featuring straightforward operation, stable performance, high efficiency, reduced labor intensity, and increased productivity, it is an ideal solution for winding finished tapes.

2021

04-27

Spiral sleeve extrusion production line

A spiral protective sleeve is a helical‑shaped cover manufactured from materials such as polypropylene (PP), polyethylene (PE), or nylon (PA) using a hot‑state winding and extrusion‑forming process. It serves as a modern alternative to traditional metal spring protectors used for hose protection. Other names for this product include spiral protective sleeve, hose protective sleeve, and wire protective sleeve. Spiral protective sleeves can be produced using reinforced nylon, modified PE, and other plastic materials. The manufacturing processes include extruding sheet material followed by helical winding, or extruding tubular material and then forming it through rotary cutting. Hebei Shuangda Rubber & Plastics Machinery Co., Ltd. is a modern enterprise integrating research, development, production, and sales of complete sets of extrusion machinery 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 various other extrusion equipment. Additionally, the company provides production equipment for engineering seals, automotive seals, wire and cable applications, air‑conditioning hoses, braided hoses, automotive hoses, waterstop strips, and related products.

2021

04-29

What are the characteristics of rubber pre‑forming extrusion equipment?

Hebei Shuangda Company’s rubber pre‑forming extruders are used to manufacture rubber products that do not require high precision. Typically, these pre‑forming extruders are hot‑feed rubber extruders. Because pre‑forming extrusion places modest demands on equipment configuration, the production costs and prices of this type of rubber extrusion machinery are among the lowest in the industry. Before using a pre‑forming extruder to produce parts, it is necessary first to raise the machine’s temperature to the required setting via the temperature control system, after which the equipment can be started and rubber fed into the feeding system. Common models of pre‑forming rubber extruders include the 65, 75, and 90 series. These machines are frequently employed for the initial shaping of molded products or for precisely metering rubber during extrusion. Consequently, the pre‑forming extruders we use tend to be relatively compact. However, their applications extend beyond serving as the first step in molding processes; they are also widely utilized in producing rubber items with less stringent precision requirements. Given their affordable price and adequate performance for many rubber‑product manufacturing needs, pre‑forming rubber extruders enjoy strong market demand.

2021

05-02

The basic operating principle of a plastic extruder

The production line of a plastic extruder consists of the extruder (main machine), the die (die head), and the product‑forming and collection equipment (auxiliary machines). When processing plastic products using the extrusion process, the operating principle is as follows: one must select an extrusion line suitable for the type of raw material and the specifications of the final product. By precisely controlling process parameters such as temperature (heating and cooling), pressure, and screw speed, the plastic is continuously extruded along the production line. The extrusion process involves the extruder screw conveying and compacting the plastic, further melting it until it reaches a fully uniform plastified state. Under pressure, the molten material is forced through the die; after shaping by forming equipment and subsequent cooling, the desired finished product is obtained. Therefore, the plastic extruder is the key piece of equipment in extrusion, directly determining both the quality and output of the extruded products. A plastic extruder mainly comprises a screw, a barrel, a heating and cooling system, a drive system, and a control system. Among these components, the screw is the most critical functional element, responsible for conveying, compacting, plasticizing, homogenizing, pressurizing, and discharging the material throughout the extrusion process. In a typical single‑screw extruder, the screw is divided into three sections: the feeding section, the compression section, and the metering (homogenizing) section. The primary design parameters of the extruder screw include the screw diameter D, the length‑to‑diameter ratio L/D, and the compression ratio.

2021

05-05

How does a plastic pelletizing machine operate?

Plastic pelletizing machines, also known as plastic granulators, are used to produce the plastic pellets required in manufacturing various plastic products. Since there are many types of plastic products, the specific kind of plastic pellets used varies accordingly. Therefore, we must tailor the raw material formulation to suit each particular product when producing pellets. Typically, single-screw extruders rely on plastic pellets during production, which underscores the broad applicability of these pellets. We select the appropriate machine model based on the desired product quality and production volume. Before starting the pelletizing process, it is essential to heat up the equipment; only after the temperature reaches the required level should the machine be activated. When producing plastic pellets, we first mix the various raw materials using a kneader. Once the ingredients are thoroughly blended, they can be fed into the pelletizing machine for processing. The raw materials enter the barrel via the feeding system, where they are heated and plastified. As the screw rotates, the material undergoes continuous shearing, mixing, and compression, ultimately generating forward extrusion pressure at the die. The molten material is then forced through the die, forming long cylindrical strands. These strands are cooled by water and subsequently conveyed to the pelletizer, where they are cut into finished pellets. There are numerous methods for producing plastic pellets, and we choose the appropriate equipment and production process according to our specific manufacturing needs. Hebei Shuangda Rubber & Plastic Machinery Co., Ltd. is a modern enterprise integrating research, development, manufacturing, and sales of complete sets of extrusion machinery for rubber, silicone, and plastics. Our 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. In addition, we manufacture production lines and equipment for engineering seals, automotive seals, wire and cable applications, air conditioning hoses, braided tubes, automotive hoses, waterstop strips, and related products.

2021

05-06

What is the difference between a silicone rubber extruder and a conventional rubber extruder?

Silicone rubber extruders are fundamental equipment in the rubber industry and rank among the key machines that influence product quality, playing a crucial role in the production of tires and various rubber products. The evolution of extruders abroad has progressed through several stages: plunger-type extruders, screw‑type hot‑feed extruders, conventional cold‑feed extruders, twin‑screw cold‑feed extruders, cold‑feed vented extruders, pin‑type cold‑feed extruders, and composite extruders. Silicone rubber extruders are typically classified according to whether they employ hot or cold feeding. In hot‑feed extruders, the compounded rubber is heated by mechanical action in an open mill; the heated rubber strips are then cut off and continuously fed into the extruder. By contrast, cold‑feed screw extruders receive room‑temperature rubber strips. Extruders are also frequently categorized based on whether they are equipped with venting capabilities.

2021

05-07

Extruder: Inspection Procedure for the Extruder

(1) Verify that all standard fasteners have been tightened. (2) Check that all lubrication points are adequately supplied with grease or lubricating oil. (3) For oil reservoirs or gearboxes, first clean them thoroughly and inspect for any foreign debris, metal shavings, or other contaminants that may have fallen into the reservoir or housing. Then, add the specified type and quantity of lubricant to the reservoir or housing. (4) When using a gasoline pump for forced lubrication in the extruder’s drive system, verify that the pump’s rotation direction complies with the required specifications and that the oil pressure and circulation are satisfactory. (5) Confirm that the rotation directions of both the main motor and the mechanical pump motor are correct. (6) Ensure that the tension levels of all V-belts are uniform. (7) Check that the clutch adjustment nut is properly positioned and that the clutch engages and disengages smoothly and reliably. If a pneumatic clutch is used, verify that the air valve’s standard air pressure, air supply volume, and the relief pressure set by the pressure regulator all meet the required specifications. (8) Inspect the water pipes, gas valves, and vacuum system for proper sealing, and ensure that the gate valves open and close smoothly and reliably. (9) Verify that the electrical grounding of all equipment is in good condition.

2021

05-08

What is the function of cold-feed rubber extrusion equipment?

The Function of Cold-Feed Rubber Extrusion Equipment The primary function of a cold-feed rubber extruder is extrusion molding; in fact, most rubber extruders used for extrusion molding are cold-feed types. The term “cold feed” is defined relative to “hot feed,” referring to whether the extruder requires hot rubber to be fed into the feed port during operation, or whether it can handle both hot and cold rubber. Typically, the distinction between a cold-feed and a hot-feed rubber extruder lies in the presence of a forced‑feed roller at the feed port. In a hot-feed extruder, the screw rotation draws the rubber inward, whereas a cold-feed extruder forcibly pushes the material into the barrel, ensuring that the screw receives an adequate supply of rubber to sustain production. Because cold-feed extrusion equipment provides stable feeding, the pressure at the extruder die remains constant, resulting in consistent product quality without fluctuations such as shaking or uneven surface profiles during production. Hebei Shuangda Rubber & Plastics Machinery Co., Ltd. is a modern enterprise integrating research and development, manufacturing, and sales of complete sets of extrusion machinery for rubber, silicone, and plastics. Its 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 components, air-conditioning hoses, braided tubes, automotive hoses, waterstop strips, and related products.

2021

05-11

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