A method for making engineered crosslinked thermoplastic particles, which are useful for interlaminar toughening of prepregs and composite materials.

A resin-soluble thermoplastic polymer veil toughening element for a curable composition wherein the polymer element is a non-woven veil in solid phase adapted to undergo at least partial phase transition to fluid phase on contact with a component of the curable resin matrix composition in which it is soluble at a temperature which is less than the temperature for substantial onset of gelling and/or curing of the curable composition and which temperature is less than the polymer elements melt temperature; a method for the preparation thereof, a preform support structure for a curable composition comprising the at least one thermoplastic veil element together with structural reinforcement fibers, methods for preparation thereof, a curable composition comprising the at least one thermoplastic veil element or the support structure and a curable resin matrix composition, a method for preparation and curing thereof, and a cured composite or resin body obtained thereby, and known and novel uses thereof.

Engineered crosslinked thermoplastic particles are useful for interlaminar toughening of pre-pregs and composite materials.

Mattresses, cushions, and body-support mats or pads include a plurality of layers extending in a depth direction from a resting surface, where the resting surface is capable of supporting user(s), to a lower surface, the lower surface being opposite the resting surface. The plurality of layers include a comfort layer that forms an upper layer proximate to the resting surface, where the comfort layer includes deformable walls separated by voids and the deformable walls include a plurality of fiber strands embedded in a cushioning media.