Tahara blow molding machine designed for large volumes

March 21, 2024
The Innovarex 400D has a range of design revisions and can produce 3,840 bottles per hour.

Innovarex 400D Japan-based manufacturer Tahara Machinery’s new electric extrusion blow molding machine is designed for large-volume production. It has a clamping force of about 45 tons, and a new design that allows it to employ anything from a single head to 12 heads for six-layer coextrusion, depending on the user’s needs. In an example of a three-layer part, the company said the inner layer, comprising 20 percent, could be HDPE; the middle layer, comprising 60 percent, HDPE plus regrind; and the outer layer, comprising 20 percent, HDPE and color. The company said this distribution would be appropriate for daily-use products such as detergents, shampoo and liquid soap, or products such as lubricant oil.  

What’s new? The Innovarex 400D, which debuted at the international plastics fair in November in Japan. It has a range of design revisions, including a newly developed mold clamping mechanism that eliminates the need for a tie-bar unit and avoids deflection that can result in a mismatch of the top surfaces of the platens. Bottle takeout has been shifted from the side of the machine to the back, reducing the width of the machine by 35 percent and allowing for installation of conveyors inside the machine to carry both flash and products.  

Benefits Throughput. Given the example of producing 1-liter bottles with a cycle time of 15 seconds, the Innovarex 400D can produce 3,840 bottles per hour. The company said this is close to what a small rotary wheel blow molding machine can achieve, but with a much lower cost for molds and maintenance. The fully electric machine can provide energy savings from 40 percent to 60 percent compared to hydraulic machines with similar production capacity. 

Tahara Machinery Ltd., Chiba, Japan, 81-476-21-1991, www.tahara-mc.com 

Vital Statistics 

Mold clamping force 

45 tons 

Maximum product size (3 cavities) 

About 10 liters 

Maximum product size (4 cavities) 

About 5 liters 

Maximum product size (8 cavities) 

About 1 liter 

Maximum product size (12 cavities) 

About 0.5 liter 

About the Author

David Tillett | Associate Editor

Associate Editor David Tillett writes and edits for Plastics Machinery & Manufacturing, Plastics Recycling and The Journal of Blow Molding. He covers new products, industry news, patents and consumer and business equipment. He has more than 20 years of experience in daily newspaper, online and magazine journalism.