Guill announces 800 series hybrid extrusion tooling

Guill announces the introduction of a new version of its popular 800 series, known as the 800 Series Hybrid. In some extrusion applications that utilize crossheads and inlines, layers of the exact same material are applied multiple times, using a single die. This method is used to reduce the propensity for errors caused by gels breaking through a thin wall, weld lines, inconsistent wall thickness, plus material and process variations. Additional errors include difficult-to-process materials and demanding applications where there is zero fault tolerance.

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Dimensional Change Resulting From Swell And Drawdown Of Extruded Polymers

Understanding and predicting how extruded profile dimensions change along an extrusion line contribute significantly to the design of shaping dies and the effectiveness of dimensional control. Upon exiting the extrusion die, the dimensions of nonsymmetric profiles change non-uniformly along the line due to swell and drawdown.

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Functionalization Of Hydrogenated Styrene Block Copolymers By Reactive Extrusion

Reactive extrusion is an attractive route for polymer processing to carry out various reactions, including polymerization, grafting, branching and functionalization. The extruder is like an ideal reactor for polymer chemical modification. Reactive extrusion is an economically attractive process, since the extrusion and processing are done in a single stage.

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Challenges In Extrusions Met With Branched, High Molecular Weight Keltan 13561C EPDM

Keltan 13561C was introduced as the premier EPDM grade for extruded seals. It has quickly become apparent that the unique combination of the grade’s characteristics makes this material one of the principal tools for other applications. The very high molecular weight and long chain controlled branching drive economical compounding and enhanced processing. Hose formulations can benefit from these characteristics.

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