Abstract: The invention relates to a composition for the treatment of fruits and vegetables by thermal fogging. The composition comprises from 2% to 25% by weight of at least one active protective and/or preserving substance, in solution or in dispersion in an aqueous medium containing a mixture of at least two emulsifiers having each an HLB value of 3 to 20, this mixture having an average HLB value of 8 to 15, and the active substance, when it is solid and does not give a true solution in said medium, being in the form of particles smaller than 1 micron.

Abstract: A film of liquid plastic material is formed by surface tension on supports. By a relative displacement, a product and the film are brought into contact with each other, the film deforming under action of the product so as to be progressively applied on and closing onto the product and completely wrapping the product after the product has passed through the supports.

Abstract: The machine comprises a continuous conveyor having rollers which are parallel to each other and equally spaced apart and define gaps therebetween. In each of the gaps there is disposed another roller which is parallel to and equally spaced from said rollers. This other roller is movable upwardly or downwardly and cooperates with independent and adjustable guides. The fruit is sorted out by using at least the upper reach of the conveyor in which the various rollers rotate in the desired direction and at suitable speed and in which the movable rollers are moved by guide means progressively away from the fixed rollers as the rollers advance toward the end of the upper reach of the conveyor. The lower reach of the conveyor is either guided in such manner as to avoid rotating the movable rollers and fixed rollers or guided so that the movable rollers are again progressively moved away from the fixed rollers as the latter and the movable rollers are rotated. The latter arrangement doubles the output of the machine.

Abstract: The machine calibrates round, oblong or spherical objects and in particular fruit and vegetables. It comprises a series of spaced-apart rollers which define cavities for receiving the objects. In these cavities, the objects rotate and place their equatorial plane in a vertical position. Calibrating rollers, oriented in a longitudinal direction or slightly inclined relative to the axis of the conveyor and at heights from the latter which decrease in the direction of conveyance of the conveyor, discharge the objects and cause them to drop through a minimum height onto a discharging conveyor placed thereunder.