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| Issue date:15/01/2008 |
| Source:China Plastic & Rubber Journal |
Reported by Adrian Chan
Edited by Wong Hok Tak
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| Chinese plastics processing machinery has been rising to a high technical standards recently. Showned is a servo injection molding machine from Guangzhou Borch Machinery Co Ltd. |
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As a result of the rapid development of such industries as toys, automobiles, electronics and appliances, packaging, and communications in the country, China posts a fast increasing demand for plastics processing machinery.
And their requirements are rising, too, resulting in a sales or price drop in those ordinarily configured machines. For instance, according Qian Yaoen, Secretary General of China Plastics Machine Industry Association (CPMIA), it has been rather difficult to maintain the sales of injection molding machines of average specifications (not including those large-sized models) at one-third of sales at prime times; on the contrary, market demand for advanced machines has been growing.
In his article titled "Current status and development trends of plastics machinery in China", published in the latest issue of China Plastic and Rubber Journal (CPRJ), Mr Qian reveals that high-precision injection molding machines – whether it is the all-electric or all-hydraulic type, see increasing demands now, as their user industries, including such sunrise industries in China as electronic communications, audio and video, home appliances, and automobiles, requires more stringent processing conditions.
Injection blow molding machines are also undergoing fast development, boosted by its use in the automobile and other industries to tackle the stress failure problem of plastic parts under vibration. So are injection molding machines with air-assist or water-assist auxiliaries in the home appliances, automobile and construction industries, and so on, which have stringent demand on the appearance as well as emphasizes high lifetime.
Mr Qian also looks forward to the prospect of blow molding machines, which feature lower costs (less costly than injection molding machines by one-third to half), lower consumption (usually blow pressure is less than 1MPa, whereas in injection molding, filling cavity pressure is 15-140MPa), but high adaptability (capable of processing complex structured and double wall parts).
With respect to auxiliary equipment, Mr Qian finds that ultra fine granulation (for nanomaterial industry), vacuum filtration, low-noise and high speed granulation, and so on, are recent development trends. In addition, following the increasing emphasis on energy saving and emissions reduction worldwide, plastics recycling machinery will be prosperous.
Development foci of Chinese plastics processing machinery industry:
Injection molding machines
Large size (clamping force ³ 6000 tons)
Micro-injection (weight of finished products < 5g)
High-precision (tolerance of finished products < 0.5%)
Electric machines
Electromagnetic dynamic machines
Extrusion machines/lines
High precision (non-uniformity of finished parts < 5%)
Wide-width (film width > 10m)
Multi-layer (more than nine layers)
Co-extrusion extrusion line for high molecular and other materials
Centrifugal extruder (saving 30% or above energy than single-screw extruders)
Electromagnetic dynamic machines
Blow molding machines
Large size (capacity of finished products > 4,000ml)
Multi-layer (more than five layers)
Advanced technology equipment for waste plastics recycling
Source: Qian Yaoen, Secretary General of CPMIA |
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