Introduction
Dalian Second Rubber and Plastic Machinery Co., Ltd. (大连第二橡塑机械有限公司) is a Chinese manufacturer of rubber and plastics processing machinery, best known for dispersion kneaders, internal mixers, open mills, calenders, and related mixing and extrusion lines. Founded in 1972 and based in Dalian, Liaoning, the company has evolved from a single-product kneader producer into a diversified equipment maker serving compound preparation and upstream processing needs across the rubber and plastics industry.
The company’s core role in the plastics industry ecosystem is in compounding and mixing equipment, where it supplies machinery used to disperse fillers, blend polymers and additives, form sheets, and prepare material for downstream conversion. Its product scope, together with reported design and service capabilities, places it at the intersection of rubber processing, plastic compounding, and industrial mixing line integration.
History and Development
The company states that it was established in 1972 as a comprehensive rubber and plastics machinery plant engaged in research, production, sales, and service. A major milestone came in 1987, when it introduced rubber machinery technology from Moriyama Co., Ltd. of Japan, followed by batch production of pressure-type kneaders in 1992.
During the early 1990s, the plant moved from a state-owned structure to a shareholding ownership model and expanded from one kneader series in three sizes to multiple series and nine specifications. Company materials also indicate that this period brought product diversification and recognition through national, provincial, and municipal awards.
In later development, the company expanded its service footprint by establishing offices in major equipment concentration regions across China starting in 1993, supporting sales, commissioning, repairs, and spare parts supply. More recent exhibition materials describe the company as operating three production bases and three global design centers, indicating a wider industrial footprint than its original Dalian site.
Business Operations and Segments
The company’s business is centered on the design, manufacture, sales, and after-sales service of rubber and plastics machinery. Its reported organization includes production, engineering, and research personnel, reflecting a manufacturing model that combines fabrication with application support and technical service.
Its operations can be grouped into three practical segments:
- Core mixing equipment, including kneaders and internal mixers.
- Sheeting and finishing machinery, including open mills and calenders.
- Auxiliary and line equipment, including extrusion, cooling, and conveying systems for integrated processing lines.
The company also emphasizes localized service infrastructure, with offices providing technical consultation, sales, commissioning, maintenance, and parts supply.
Products and Technologies
The company’s principal products include dispersion kneaders, pressure-type kneaders, internal mixers/Banbury mixers, open mills, rubber calenders, and related production lines. Product listings also mention cold-feed extruders, double-cone screw sheet extruders, rubber/plastic closed mixers, pelletizing lines, cooling units, and feeding systems.
Representative equipment and process capabilities include:
- Dispersion kneaders / pressure-type kneaders, used for high-intensity mixing of rubber compounds and polymer formulations.
- Internal mixers (Banbury-type), used for enclosed mixing with strong distributive and dispersive action in compound preparation.
- Open mixing mills, used for mastication, blending, and sheet formation in rubber processing.
- Calenders, including two-roll, three-roll, and four-roll configurations, used for sheet, film, and coating operations.
- Extrusion and sheeting equipment, including cold-feed and sheeting machines for line integration and downstream processing.
The company’s technical messaging places particular emphasis on mixing technology, and its product range suggests a focus on equipment used in the early stages of material transformation, where process consistency, dispersion quality, and throughput are critical.
Applications and End Markets
The company’s machinery is used in rubber compounding and plastic processing workflows that feed a broad range of industrial manufacturing sectors. Such equipment is relevant to:
- Automotive and tire-related manufacturing, where rubber mixing and compounding are central.
- Cable and wire materials, which require consistent rubber and polymer blending.
- General industrial rubber goods, including seals, hoses, and molded products.
- Plastic masterbatch, pelletizing, and sheet processing, where mixing uniformity influences downstream product quality.
Exhibition and supplier materials also associate the company with export-oriented machinery supply and integrated production lines, suggesting its equipment is positioned for users requiring both standalone mixers and complete compound-preparation systems.
Global Presence and Market Position
Company and exhibition materials describe the business as having a significant domestic base in China and an international market presence through exports and trade-fair participation. One supplier profile states that the company has exported equipment to more than 30 countries, while exhibition listings identify it as a participant in CHINAPLAS and RubberTech China.
CHINAPLAS-related materials describe the company as a provincial-level high-tech enterprise, a national “Little Giant” specialized and sophisticated enterprise, and a company with three production bases and three global design centers in China, Japan, and Germany. Those materials also describe it as belonging to China’s top 10 rubber machinery manufacturers and among the global top 20 in the category. These are company- and exhibition-presented positioning claims and should be understood as part of its self-reported market profile.
Research and Development
The company’s history emphasizes continual product development, beginning with the extension of its kneader line in the early 1990s and continuing into more varied mixing and finishing machinery. It describes itself as a manufacturer engaged in research and development as well as production and service, indicating that product engineering is a core operating function.
CHINAPLAS materials indicate the existence of global design centers and identify the company as a high-tech enterprise, which together suggest an institutionalized R&D structure focused on equipment adaptation, mixing technology, and process integration. Exhibition references to “high intelligent rubber mixer equipments” also point to continued development toward more advanced control and process capability.
Sustainability and Environmental Initiatives
The company’s publicly visible materials focus primarily on machinery, product range, and technical service rather than on detailed sustainability disclosures. In industry context, equipment of this type can contribute indirectly to efficiency through improved mixing uniformity, lower material waste, and better process stability, although such benefits depend on user configuration and operating conditions.
Because the company’s available materials do not provide a detailed environmental report, any assessment of its sustainability profile should be limited to its role as a manufacturer of industrial process equipment rather than extending to quantified emissions, energy, or lifecycle performance claims.
Financial Performance and Economic Impact
One supplier profile reports an annual production value of about RMB 150 million, with a workforce of 530 employees, including engineering and research staff. Another industry directory gives a similar scale of operations and indicates that the company functions as a manufacturing and service enterprise with substantial technical staffing.
Economically, the company contributes through capital equipment manufacturing, domestic service coverage, and export sales, supporting rubber and plastics processors that depend on mixing and compounding machinery as a foundational production input. Its office network and after-sales services also indicate a continuing role in equipment lifecycle support rather than only new-machine sales.
Quality Management and Certifications
The company is described in CHINAPLAS materials as a Chinese enterprise credit AAA unit and a high-tech enterprise. Separate supplier materials also mention ISO 9001, ISO 14001, and CE certification, although those statements appear in third-party profiles rather than in the company’s own detailed certification disclosure.
Innovations and Future Outlook
The company’s product evolution shows a sustained focus on the machinery class where mixing performance, dispersion quality, and process integration matter most. Its expanded line of kneaders, mills, calenders, extruders, and auxiliary systems suggests a strategy of offering more complete process solutions rather than isolated machines.
Future development for this type of manufacturer is likely to be shaped by demand for more automated control, higher throughput, better energy efficiency, and more consistent compound quality in rubber and plastics processing. The company’s reported design-center footprint and repeated presence at major industry exhibitions indicate an ongoing effort to align with these technical and market trends.
References
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CPS+ eMarketplace. (n.d.). DALIAN SECOND RUBBER AND PLASTIC MACHINERY CO., LTD.DALIAN SECOND RUBBER AND PLASTIC MACHINERY CO., LTD.. CPS+ eMarketplace. https://www.chinaplasonline.com/eMarketplace/ExhibitorInfo?CompId=1021979Link