Compositions and methods for cleaning surfaces, such as for removing residues or other coatings from molds and other industrial parts, such compositions comprising, for example, a first solvent comprising a pyrrolidone such as 2-pyrrolidone, 1-(2-hydroxyethyl)-2-pyrrolidone, or mixture thereof; and a second solvent selected from the group consisting of an imidazole (such as 1,2-dimethylimidizole), an alkylene glycol ether (such as ethylene glycol monobutyl ether or diethylene glycol monobutyl ether, a terpene (such as d-limonene), and mixtures thereof. In various embodiments, such methods are for removing residues from molds used in forming polyurethane parts, wherein residues comprise polyurethane, urethane reactants, and mold release agents. The compositions may be substantially free of 1-methyl-2-pyrrolidone and of 1-ethyl-2-pyrrolidone.

An oven for cleaning molds, die nozzles and components for apparatuses for processing plastic materials in general, comprising a basket adapted to contain the molds to be cleaned, and a heating bell adapted to heat the molds contained in the basket, the bell can be moved away and upward with respect to the die-carrying basket in order to facilitate access to the die-carrying basket.

An oven for cleaning molds, die nozzles and components for apparatuses for processing plastic materials in general, comprising a basket adapted to contain the molds to be cleaned, and a heating bell adapted to heat the molds contained in the basket, the bell can be moved away and upward with respect to the die-carrying basket in order to facilitate access to the die-carrying basket.

An automatic mold cleaning device includes an automatic cleaning system, a mold clamping system and a waste recovery system.

An automatic mold cleaning device includes an automatic cleaning system, a mold clamping system and a waste recovery system.

An automatic plant for cleaning moulds for tyres, wherein the moulds are constituted of sectors and cheeks, includes an apparatus for internal cleaning of sectors and cheeks and an apparatus for external cleaning of sectors and cheeks. The apparatus for internal cleaning of sectors and cheeks comprises fixing means for sectors and cheeks in a stable treatment position, a generating device for generating ultrasonic vibrations, transmitting means for transmitting the vibrations from the device to the sector or cheek treated, in such a way as to carry out cleaning of sectors or cheeks by subjecting them to vibrations.

An automatic plant for cleaning moulds for tyres, wherein the moulds are constituted of sectors and cheeks, includes an apparatus for internal cleaning of sectors and cheeks and an apparatus for external cleaning of sectors and cheeks. The apparatus for internal cleaning of sectors and cheeks comprises fixing means for sectors and cheeks in a stable treatment position, a generating device for generating ultrasonic vibrations, transmitting means for transmitting the vibrations from the device to the sector or cheek treated, in such a way as to carry out cleaning of sectors or cheeks by subjecting them to vibrations.

Provided is a mold cleaning system. When cleaning a mold, the mold cleaning system acquires three-dimensional image data of a molding surface of the mold by a camera and, on the basis of the acquired image data, the mold cleaning system controls the movement of arms using a control device, moves a laser head along the molding surface while irradiating with a laser beam supplied by a laser oscillator and, as a result, removes dirt adhered to the molding surface.

Provided is a mold cleaning system. When cleaning a mold, the mold cleaning system acquires three-dimensional image data of a molding surface of the mold by a camera and, on the basis of the acquired image data, the mold cleaning system controls the movement of arms using a control device, moves a laser head along the molding surface while irradiating with a laser beam supplied by a laser oscillator and, as a result, removes dirt adhered to the molding surface.

A cleaning system for use with a filter is described herein. The cleaning system includes a housing including a main enclosure defining an interior sized to receive the filter, a collection vessel coupled in communication with the housing, and a nozzle configured to direct a stream of air towards the filter to dislodge particles from the filter. A pneumatic suction device is coupled in communication with the collection vessel, wherein the pneumatic suction device is configured to draw the particles dislodged from the filter towards the collection vessel.