Introduction
Qingdao Weier Plastic Machinery Co., Ltd. (Chinese: 青岛威尔塑料机械有限公司) is a plastics-processing equipment manufacturer based in Jiaozhou, Qingdao, Shandong, China. The company develops and supplies extrusion machinery and complete production lines for pipes, profiles, sheets, plates, films, packing materials, and wood–plastic composite products. Its principal activities place it within the machinery segment of the plastics industry, where equipment suppliers support polymer processors by converting thermoplastics and composite formulations into semi-finished and finished products.
Weier’s product portfolio spans single-screw and twin-screw extruders, pipe and profile extrusion systems, sheet and plate lines, wood–plastic composite equipment, pelletizing machinery, and specialized production systems. Examples include equipment for PVC, PE, PP, PET, PS, ABS, PMMA, PC, CPVC, PPR, and related polymer materials. The company states that its machinery has been exported to more than 70 countries and regions and that export sales account for approximately 70 percent of its business.
The company’s development reflects broader trends in plastics machinery: increasing demand for turnkey production lines, material flexibility, multilayer structures, wood–plastic composites, infrastructure pipes, packaging materials, and equipment capable of processing recycled or mixed polymer feedstocks. Its market position is associated primarily with customized and application-specific extrusion systems rather than with the production of polymer resins or consumer plastic goods.
History and Development
Qingdao Weier Plastic Machinery developed in Qingdao’s manufacturing environment, a region with established activity in polymer processing, chemical engineering, machinery production, and export-oriented manufacturing. The company describes itself as having developed over several decades and identifies the WEIER WELL brand with its machinery business.
Key development milestones include:
- Expansion from general extrusion machinery into specialized equipment: The company’s portfolio developed beyond basic extruders to include pipe, profile, sheet, plate, film, packing-belt, and wood–plastic composite lines.
- Development of polymer-specific processing systems: Weier introduced equipment configurations for materials including PVC, PE, PP, PET, PS, ABS, PMMA, PC, CPVC, and PPR, allowing its machinery to serve different processing temperatures, viscosities, and product geometries.
- Growth of international project activity: The company reports supplying machinery to customers in more than 70 countries and regions, including markets in Asia, North America, Europe, the Middle East, Russia, and other export destinations.
- Expansion into turnkey services: In addition to individual machines, Weier offers production-line design, installation support, process assistance, and technical training.
The company has also described cooperation with Qingdao University of Science and Technology and the Qingdao Institute of Bioenergy and Bioprocess Technology of the Chinese Academy of Sciences in connection with specialized plastic machinery development.
Business Operations and Segments
Weier operates as a manufacturer and exporter of plastics-processing machinery. Its activities can be grouped into several principal segments:
| Segment | Typical equipment or output |
|---|---|
| Pipe extrusion | PE, HDPE, PPR, PEX, PVC, CPVC, and specialized pipe lines |
| Profile extrusion | PVC window and door profiles, edge bands, decorative profiles, and composite profiles |
| Sheet and plate extrusion | PET, APET, PETG, CPET, PP, PE, PS, ABS, PMMA, PC, and PVC sheet systems |
| Wood–plastic composites | WPC profile, door, board, and foam-board production lines |
| Packaging materials | PET, PP, and related plastic strapping or packing-belt equipment |
| Compounding and pelletizing | Extruders and pelletizing systems for polymer compounds and recycled materials |
| Special-purpose systems | Equipment adapted to particular formulations, product dimensions, and customer requirements |
The company supplies both individual machines and integrated production lines. A turnkey project may include the main extruder, feeding and dosing systems, dies, calibration or forming units, cooling, haul-off equipment, cutting, stacking, electrical controls, commissioning, and operator training.
Products and Technologies
Extrusion Equipment
Extrusion is the central technology in Weier’s portfolio. In a typical line, polymer pellets or blended compounds are fed into an extruder, melted and homogenized by controlled heat and shear, forced through a die, cooled or calibrated, and then cut, hauled, wound, or stacked.
The company supplies both single-screw extruders and twin-screw extruders. Single-screw systems are widely used for pipes, profiles, films, and sheets, while twin-screw machines are particularly suitable for compounding, blending, wood–plastic formulations, and materials requiring intensive mixing or devolatilization.
Relevant equipment categories include:
- SJ-series single-screw extruders.
- SJSZ conical twin-screw extruders for PVC processing.
- SHJ parallel twin-screw extruders for compounding and specialized extrusion.
- Screen changers and melt-filtration systems.
- Automatic or semi-automatic dosing and feeding units.
- Die heads designed for pipes, profiles, sheets, plates, films, and straps.
- Haul-off, cutting, winding, cooling, and stacking units.
Pipe Production Lines
Weier supplies production lines for water-supply, gas-supply, agricultural, drainage, and other polymer pipe applications. The equipment portfolio includes systems for PE, HDPE, PPR, PEX, PVC, CPVC, and specialized multilayer or reinforced pipes.
A pipe line generally combines:
- Material feeding and drying or blending.
- A single-screw or twin-screw extruder.
- A pipe die and sizing sleeve.
- Vacuum calibration and water-cooling tanks.
- Haul-off equipment.
- Cutting, coiling, or automatic stacking systems.
Pipe-line performance depends on melt stability, die design, cooling efficiency, wall-thickness control, haul-off synchronization, and the dimensional accuracy of the calibration system. These variables are particularly important for pressure pipes, where dimensional consistency and long-term resistance to internal pressure are essential.
Profile and WPC Equipment
The company manufactures systems for PVC profiles, window and door sections, decorative profiles, edge bands, and wood–plastic composite products. WPC machinery processes blends containing thermoplastics and lignocellulosic fillers such as wood flour. These formulations require controlled feeding, drying, dispersion, thermal management, and venting because moisture and heat sensitivity can affect surface quality and mechanical performance.
Weier’s WPC portfolio includes equipment for:
- Door and window profiles.
- Foam boards and decorative boards.
- Building and landscaping profiles.
- Composite sheets and plates.
- Edge-banding and related profile products.
WPC lines may incorporate wood-flour preparation equipment, including crushing, drying, and pulverizing systems. One described system has a processing range of approximately 300–350 kilograms per hour and produces wood powder in the range of 60–100 mesh.
Sheet, Plate, and Film Lines
Weier supplies sheet and plate extrusion systems for a range of thermoplastics. A PET sheet line described by the company’s trading profile can process APET, PETG, CPET, PS, PP, and PE and may use a vented extruder, die, screen changer, cooling unit, three-roll calender, haul-off, and cutting equipment.
The described system is configured for single-layer and multilayer sheet with thicknesses from approximately 0.12 to 5 millimetres and widths from 500 to 3,000 millimetres. Such lines can serve packaging, thermoforming, construction, appliance, and general industrial applications, although the final suitability depends on polymer grade, additives, sheet orientation, cooling conditions, and downstream forming requirements.
The company also lists equipment for:
- PVC crust foam board.
- PC hollow and twin-wall roof sheet.
- PP, PE, PS, ABS, PMMA, and PVC sheet or plate.
- Multilayer coextrusion.
- Decorative and functional plastic boards.
Packing-Belt Machinery
Weier supplies equipment for PET and PP packing straps. These lines typically require polymer melting, filtration, die forming, water cooling, stretching or orientation, embossing, heat setting, and winding. Process control affects strap tensile strength, elongation, thickness uniformity, surface texture, and resistance to splitting during use.
Pelletizing and Recycling-Related Equipment
The company also supplies pelletizing and compounding machinery. Such equipment can be used to transform production scrap, selected post-industrial materials, or formulated polymer blends into reusable pellets. The quality of the resulting material depends on sorting, contamination control, drying, melt filtration, residence-time management, and pelletizing conditions.
Recycling-related machinery is increasingly influenced by the need to process variable feedstocks. In practice, equipment designed for recycled polymers must balance throughput with filtration performance, volatile removal, thermal stability, and consistent melt quality.
Applications and End Markets
Weier’s machinery serves processors supplying several major plastics end markets:
- Construction: PVC profiles, WPC doors, foam boards, roofing sheets, wall products, and plastic pipes.
- Water and gas infrastructure: PE, HDPE, PVC, CPVC, PPR, and related pressure or utility pipes.
- Agriculture: Irrigation pipe, drip-irrigation tape, agricultural film-related products, and water-management components.
- Packaging: PET and PP straps, thermoforming sheet, rigid packaging sheet, and multilayer materials.
- Furniture and interior products: Decorative profiles, edge bands, WPC boards, and composite panels.
- Electrical and industrial products: Technical profiles, sheets, plates, protective components, and polymer compounds.
- Recycling and materials processing: Pelletizing, compounding, and preparation of reusable polymer feedstocks.
The company’s product range connects it with infrastructure investment, construction activity, packaging consumption, material substitution, and the increasing use of composite materials. Demand for its machinery is therefore influenced not only by plastics consumption but also by capital expenditure cycles, polymer prices, energy costs, export conditions, and the availability of skilled operators.
Global Presence and Market Position
Qingdao Weier is headquartered in Jiaozhou City, Qingdao, in Shandong Province. Its factory address is identified as Middle Pingcheng Road, East of Jiaoxi Industrial Zone, Jiaozhou City, Qingdao, China.
The company reports exports to more than 70 countries and regions, including South Korea, the United States, Japan, Italy, the Middle East, and Russia. Its international business model combines equipment sales with technical support and project services.
Weier competes in a diverse global machinery market that includes large multinational equipment groups, established Chinese extrusion-machine manufacturers, regional specialists, and lower-cost custom engineering suppliers. Its differentiation is associated with:
- Broad coverage of pipe, profile, sheet, plate, WPC, and pelletizing applications.
- Ability to supply complete production lines rather than only individual extruders.
- Customization for different polymer grades and product specifications.
- Export-oriented sales and technical assistance.
- Integration of auxiliary equipment into turnkey systems.
The company’s reported annual revenue is approximately RMB 50 million, with exports representing roughly 70 percent of sales. These figures describe the scale presented in company materials rather than an independently audited measure of its position in the global plastics machinery market.
Research and Development
Weier’s research and development activity is focused on application-specific machinery and process adaptation. The company describes cooperation with domestic universities and research institutions to develop specialized equipment for customer requirements.
Important technical development areas include:
- Processing of wood–plastic compounds with variable filler content.
- Multilayer sheet and plate coextrusion.
- PVC profile and pipe extrusion.
- Equipment for PET, PP, PE, PS, ABS, PMMA, and PC sheet.
- Improved feeding, mixing, venting, filtration, and process control.
- Integration of downstream units into complete automated lines.
For plastics machinery manufacturers, research and development generally involves more than the design of the extruder itself. Die geometry, cooling, calibration, haul-off synchronization, control software, material handling, and energy consumption all affect the commercial performance of a line.
Sustainability and Environmental Initiatives
Weier’s equipment portfolio intersects with several sustainability-related developments in the plastics industry, although the environmental performance of a production line depends substantially on the materials, operating conditions, electricity source, and downstream product design.
Potential sustainability contributions include:
- Use of recycled polymers: Pelletizing and filtration systems can support the reuse of suitable post-industrial or post-consumer materials.
- Wood–plastic composites: WPC products can incorporate wood flour and may reduce reliance on virgin polymer in selected applications, although their recyclability and end-of-life routes depend on formulation and product design.
- Lightweighting: Multilayer sheets, profiles, and optimized structures can reduce material use when they meet required performance standards.
- Process efficiency: Stable temperature control, accurate dosing, optimized screw design, and reduced start-up scrap can lower material and energy losses.
- Long-life infrastructure products: Durable pipes and profiles can reduce replacement frequency in appropriate applications.
These benefits must be assessed alongside the environmental impacts of polymer production, electricity consumption, additives, manufacturing scrap, composite-material separation, and end-of-life management. WPC products and multilayer structures may present recycling challenges when their components are difficult to separate.
Financial Performance and Economic Impact
Company materials report annual revenue of up to approximately RMB 50 million and an export share of about 70 percent. The company is also described in commercial supplier listings as a manufacturer and trading company with a workforce of approximately 60 employees.
Its economic contribution is concentrated in industrial equipment manufacturing and the supporting services required to commission plastics-processing plants. These activities include:
- Mechanical and electrical equipment fabrication.
- Engineering and line integration.
- Installation and commissioning.
- Technical training.
- Spare-parts supply and after-sales support.
- Export logistics and international customer service.
The company’s reported international sales expose it to global freight costs, exchange-rate movements, import regulations, regional construction cycles, polymer-market conditions, and investment trends in packaging and infrastructure.
Quality Management and Certifications
Weier’s service information describes a one-year warranty for equipment from the date of shipment and a six-month quality assurance period for product electrical components. These provisions indicate a service framework centered on post-shipment support and equipment reliability.
For extrusion machinery, quality assessment typically includes:
- Dimensional accuracy of screws, barrels, dies, and calibration components.
- Stability of temperature and pressure control.
- Uniformity of product dimensions.
- Reliability of electrical and control systems.
- Performance of cooling, haul-off, cutting, and winding units.
- Availability of spare parts and technical assistance.
Specific certification claims should be evaluated against the documentation supplied for the individual machine, production line, destination market, and electrical configuration. Requirements may differ according to product type, workplace safety rules, pressure-pipe standards, and the regulations of the importing country.
Innovations and Future Outlook
Weier’s future development is likely to be shaped by several structural trends in plastics machinery:
- Greater process automation: Customers increasingly seek integrated controls, automatic dosing, online monitoring, and reduced dependence on manual adjustment.
- Demand for multilayer products: Multilayer sheet, pipe, and film systems can combine barrier, mechanical, optical, or cost-related properties.
- Recycled-material processing: Machinery must handle greater variability in recycled feedstocks while maintaining filtration and melt-quality control.
- Energy efficiency: Extruder drives, barrel heating, cooling systems, and auxiliary equipment are under pressure to reduce energy use per kilogram of output.
- Construction-material diversification: WPC, foam boards, composite profiles, and polymer-based infrastructure products remain important application areas.
- Turnkey international projects: Customers in developing and industrializing markets may prefer suppliers capable of providing equipment, commissioning, training, and process support as one package.
The principal challenges include intense competition among machinery suppliers, technical-service requirements in overseas markets, fluctuations in polymer and metal prices, compliance with differing safety standards, and the need to maintain product consistency across customized equipment orders.
Summary
Qingdao Weier Plastic Machinery Co., Ltd. is a Qingdao-based manufacturer and exporter of plastics-processing machinery. Its principal activities include the design and supply of extrusion lines for pipes, profiles, sheets, plates, films, packing straps, wood–plastic composites, and polymer compounds.
The company occupies an equipment-focused position within the plastics value chain. Its reported exports to more than 70 countries, broad material coverage, and turnkey project services connect it with construction, infrastructure, packaging, agriculture, furniture, and industrial-product markets. Its technological significance lies in adapting extrusion, coextrusion, compounding, cooling, calibration, and downstream handling systems to a wide range of polymer and composite applications.
As plastics processors face pressure to improve efficiency, incorporate recycled materials, reduce waste, and produce increasingly specialized structures, Weier’s development will depend on process innovation, equipment reliability, international technical support, and its ability to align machinery design with evolving material, regulatory, and end-market requirements.
Références
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CPS+ eMarketplace. (n.d.). QINGDAO WEIER PLASTIC MACHINERY CO., LTD.QINGDAO WEIER PLASTIC MACHINERY CO., LTD.. CPS+ eMarketplace. https://www.chinaplasonline.com/eMarketplace/ExhibitorInfo?CompId=1038169Link