Film Extrusion

Multiscrew 1 May 2006

NPE 2006 News Flash

Injection MoldingSimplified Hot Runners Save Time & CostA new lower-cost hot-runner alternative to valve gating is suited to less critical cosmetic applications where users need predictable and reliable gate opening but not sequential gate operation.

Film Extrusion 1 May 2006

Don't Let IBC Problems Burst Your Bubble

Under-blowing of air in internal bubble cooling (IBC) systems for blown film can cause the bubble to suck in or actually collapse.

Additives 1 Apr 2006

Slip Agents: Extended Performance Range for Polyolefin Films

Newer specialty slip masterbatches go beyond traditional capabilities to provide greater thermal stability, reliability, and ability to hold COF steady during laminating.

Film Extrusion 1 Mar 2006

Microlayer Films: New Uses for Hundreds of Layers

Early microlayer films gave an iridescent shimmer to decorative packaging. The newest films with hundreds and even thousands of layers are designed for gas barrier, uv blocking, electronic displays, and high-strength window-glass laminates. As applications grow, more processors want in on the action.

Film Extrusion 1 Nov 2005

Nine-Layer Blown Film: Why It's a Challenge, What It Takes to Succeed

Eight years after nine-layer blown films were first introduced, only a handful of processors have mastered the challenges of making them. Machine suppliers are now setting up lab lines that could make entry easier.

monitoring 1 Oct 2005

50 Ideas That Changed Plastics

Very few readers of this issue can remember, or even imagine, what it was like when an injection molding machine did not have a screw, but only a smooth-bore plunger.

Film Extrusion 1 May 2005

Capacitance Thickness Gauges: New Designs Break Old Barriers

Economical, non-nuclear capacitance gauges are opening new markets in blown film—primarily in barrier films, where they previously suffered serious shortcomings. New gauge designs, and new ways of mounting them, make capacitance technology much more flexible.