Abstract: Process for unifying under heat thin structures (20) of synthetic material such as woven and non-woven fabrics, moquettes and other kinds, with manufactured products (13) made of plastic material, especially by means of well-known techniques such as molding, vacuum forming, thermoforming, calendering and others, the process consisting in the fact that the thin structure (20) is made heat-conducting by treatment with emulsions, pastes etcetera containing water, metals, heat-conducting products generally, and is made to adhere to a wall (17) of metal or of some other highly heat-conducting material, so that, during the unifying process the heat transferred from the plastic material forming the manufactured product (13) to the aforesaid thin structure (20) passes rapidly from the latter to the heat-conducting wall (17) thus preventing said structure (20) from becoming overheated and damaged.

Abstract: Process for mixing products uses an extruder having one or more screws, rotating in a cylinder, to determine forward movement of the material. A backward flow of material is generated by means of a counterthreading whose lead is opposite to that of the extruder screw. The backward flow on meeting the forward flow gives rise to increasingly thorough mixing while the material moves forward. The forward movement of the mixed material is ensured by providing the counter threading with a helical channel whose lead is the same as that of the extruder screw, or with channels or holes of varying sizes and position.