The invention relates to an extrusion process for the production of expandable vinyl aromatic polymer granulate comprising mixing first and second additives with first and second polymer components, respectively, in dedicated mixers.

The present disclosure is directed to a formulations of cements and methods for bonding dissimilar materials. The formulations and methods can bond a Non-polyvinyl chloride (PVC) containing first polyolefin that is amorphous or has low crystallinity to a second material that is a rigid material or a hard PVC. The methods and formulations can work by co-dissolution at an interface, or activation of a one of the materials prior to bonding.

The present disclosure is directed to a formulations of cements and methods for bonding dissimilar materials. The formulations and methods can bond a Non-polyvinyl chloride (PVC) containing first polyolefin that is amorphous or has low crystallinity to a second material that is a rigid material or a hard PVC. The methods and formulations can work by co-dissolution at an interface, or activation of a one of the materials prior to bonding.

Impact-dissipating liners, helmets having an impact-dissipating liner, and methods of fabricating impact-dissipating liners are provided. The liners include a fluid impermeable enclosure having cavities with sidewalls and a fluid contained in the enclosure. The enclosure may have a central portion and lobes extending from the central portion, wherein the central portion and the lobes are adapted to conform to the shape of an internal surface of a helmet. The helmets may include bodies positioned within the cavities of the liner, where, under impact loading, contact between the bodies and the liner absorbs at least some of the energy of the impact loading. Aspects of the invention are particularly adapted for use for head protection, such as, helmets; however, aspects of the invention are also adaptable to provide impact-dissipation for any body or surface that would benefit from such protection.

The invention relates to an extrusion process for the production of expandable vinyl aromatic polymer granulate comprising mixing first and second additives with first and second polymer components, respectively, in dedicated mixers.

A resin member has a longitudinal direction, includes a stretchable portion having an extending portion extending in a direction crossing the longitudinal direction, when the resin member is stretched in the longitudinal direction, an angle at which the extending portion extends changes, and the material of the stretchable portion contains cellulose fibers and a resin.

Novel extruded ceiling fan blades, compositions and methods of making the blades from plastic material such as polystyrene are disclosed. The blades can be formed from two extruders so that different colors and/or finishes, such as wood grain looks can be formed on the upper and lower surfaces of the blades.

A method of forming a reusable, non-adhesive protective cover is disclosed which includes extruding first and second layers of a thermoplastic film onto a rotatable cast roll. The first layer has an interior surface and an exterior surface. The second layer is extruded onto the interior surface of the first layer to form a co-extruded laminate. The second layer has an exterior surface exhibiting attachment and release capabilities such that a joint tape can be used to join adjacent sheets of the protective cover together. The co-extruded laminate is then advanced between a nip formed by an embossing roll and a rubber roll whereby the exterior surface of the first layer contacts the embossing roll to form a co-extruded embossed laminate. Lastly, the co-extruded embossed laminate is passed around at least a portion of a chill roll to cool the laminate and form the reusable, co-extruded embossed non-adhesive protective cover.

A method of preparing a thermoplastic resin composite includes laminating a matrix resin layer and a reinforcing resin layer to prepare a resin laminate, and heat-bonding the resin laminate, and prior to the step of heat-bonding the resin laminate, fixing one or more selected from the group consisting of the reinforcing resin layer and the resin laminate using a stitch resin having a draw ratio of less than 10:1 and a melting point of 150 C. or lower.

The invention relates to a method for welding a polyolefin plastic and a plastic using a primer, said primer containing at least one maleic anhydride containing polymer and at least one polyester. The invention also relates to correspondingly bonded products.