Expanded styrene acrylonitrile polymer particles are provided which give good resiliency over an extended period of time.

Expanded styrene acrylonitrile polymer particles are provided which give good resiliency over an extended period of time.

Vinylidene fluoride polymers having a wide range of molecular weights are produced with reduced initiator consumption by using trichlorofluoromethane as a chain transfer agent in the emulsion polymerization process. Vinylidene fluoride homopolymers made by the process have a significantly reduced tendency to generate cavities at high temperatures and a greater resistance to discoloration at high t...

Fibre mat made of mineral wool is deformed by precompressing the mat between two adjustable rolls, if necessary after the addition of a binding agent. A periodical up-and-down motion of the pair of rolls deforms the mat to corrugations within a pair of guide plates. A glass fibre mat, wetted on the underside by a binding agent, is then applied to the top and the laminate is pulled through a polyme...

Fibre mat made of mineral wool is deformed by precompressing the mat between two adjustable rolls, if necessary after the addition of a binding agent. A periodical up-and-down motion of the pair of rolls deforms the mat to corrugations within a pair of guide plates. A glass fibre mat, wetted on the underside by a binding agent, is then applied to the top and the laminate is pulled through a polyme...

Fibre mat made of mineral wool is deformed by precompressing the mat between two adjustable rolls, if necessary after the addition of a binding agent. A periodical up-and-down motion of the pair of rolls deforms the mat to corrugations within a pair of guide plates. A glass fibre mat, wetted on the underside by a binding agent, is then applied to the top and the laminate is pulled through a polyme...

Fibre mat made of mineral wool is deformed by precompressing the mat between two adjustable rolls, if necessary after the addition of a binding agent. A periodical up-and-down motion of the pair of rolls deforms the mat to corrugations within a pair of guide plates. A glass fibre mat, wetted on the underside by a binding agent, is then applied to the top and the laminate is pulled through a polyme...

A process for forming a panel from two or more thermoplastics sheets comprising the steps of separately feeding the sheet simultaneously through a controlled temperature furnace so as to cause expansion thereof, heating at least opposed surfaces of adjacent sheets to be further heated to their melting temperature and then causing said sheets to converge together until they abut one another whereup...

A jig is made comprising several outer ribs. Within these there is are longitudinal strips which form a skeleton for the proposed bull shape. Glass reinforced, gel coated sheets are precut to form planking and bottom sheets. These sheets are put in the skeleton with the gel coat surface directly against the strips. The sheets are temporarily fixed against the strips in the skeleton and are joined ...

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The component includes channels (2) separated from each other by steps (3) which run from one side wall to another, and externally and internally from one contact surface (1) to the other. The one contact surface has pins (5) and crossing springs (8), both parallel to the side (6) and end (7) surfaces. The other contact surface has recesses for the pins and tracks for the springs and pins. The rec...