Three-Material Molding with Foamed & Solid LSR
Negri Bossi Canbio sT press molds a ping pong paddle with hard and soft thermoplasics and both solid and foamed LSR.
On display at the Negri Bossi booth is an example of the Canbio sT servo-hydraulic toggle line (180 to 500 metric tons), recently introduced to North America. These “highly modular” machines have the Tactus controller with 21.5-in. touchscreen and energy-consumption monitor. A 180-m.t., two-shot model with a third auxiliary injector is molding a ping pong paddle with three materials (or four, depending on how you’re counting).
The rigid core of the paddle is PBT, molded on the main horizontal injector. The smaller vertical injector molds a TPU soft-touch handle. The mold is directly fed liquid silicone by an “Easy-Balance LSR” unit from Guzzini Engineering. This unit overmolds two different ball-control faces on the paddle in two densities—the firmer face in solid LSR and the “spongier” side in microcellular foamed LSR. Parts are handled by a six-axis robot from sister company Sytrama.
Related Content
-
Video: Ultradent Bags Both Hot Shots Prizes at PTXPO 2023
Topping five other entries in voting by fellow molders, the Ultradent team talks about their Hot Shots sweep.
-
Larger Capacity Auxiliary Injection Unit Introduced
Mold-Masters has extended the capabilities of its E-Multi auxiliary injection platform, introducing the new larger capacity EM5 model.
-
New Multicomponent Injection Molding Machine Line Launches
FCS Group’s X-Type parallel quartet injection molding machine features four injection units aligned in parallel for a smaller footprint.
