TABLE OF CONTENTS Victrex: Aptiv (form: film)
Victrex have received several samples of Aptiv film which have been successfully welded using ultrasonic and laser methods.
Reference: Heat Sealing, Welding & Laminating APTIV Film, Supplier design guide, Victrex plc.
Victrex: Victrex PEEK
Victrex PEEK may be bonded using conventional thermoplastic welding techniques. However, these materials have exceptionally high melt temperatures, and considerable amounts of energy must be put into the polymer during welding to achieve a good bond. Satisfactory results have been obtained using hot plate, friction, and near-field ultrasonic welding.
Reference: Victrex Processing Guide, Supplier design guide (604/1.5M), Victrex plc, 2004.
Victrex: Victrex 450G
The PEEK plaques were dried for 3 hours in a vacuum oven at 150 C (302 F) prior to welding. Six welds were made using "optimum" conditions with a hot plate temperature of 400 C (752 F), six "cold" welds were made using a lower hot plate temperature of 350 C (662 F), and another six were made at 400 C (752 F) with the stops set incorrectly, so that there was no pressure during the welding cycle.
At normal welding pressures, when the hot plate temperature was decreased from 400 C (752 F) to 350 C (662 F), there was a trend for the crystallinity to increase from 32% to 34%, but there was no effect on the orientation.
Within the range of crystallinity and orientation observed, there was no effect on the mechanical properties.
The mean tensile and tensile-impact strengths of the normal pressure 400 C (752 F) welds were...
