GUELPH, Canada — Danby, a Canadian appliance manufacturer, is retooling its production lines to make full-service ventilators and a second device that allows bag valve masks to operate mechanically in an emergency situation.

Pressure-sensitive adhesives are helping appliance assemblers enhance aesthetics, performance and reliability

With so many ways to formulate plastic to get just the right combination of color, texture, strength and durability, it’s easy to forget how the parts will be assembled. However, if the parts will be assembled with screws, overlooking such parameters as thread style, driver speed and boss design could spell disaster on the assembly line.