We know that the compactor is a machine often asked to "make the impossible possible", because it is located at the end of the production line of fabric finishing to which every technician entrusts the fabric to fix stretching and stability related problems after weaving, dyeing and finishing. The compacting is the operation carried out to improve the dimensional stability of knitted fabrics, thus reducing their shrinkage percentage at washing. The compacting process, beyond offering greater dimensional stability in an absolute sense, helps determining the dimensional differences inside: 1. each fabric roll (i.e. between roll's head and end) 2. each processing batch (i.e. between the different fabric rolls in the same batch). The fabric handle obtained after the compacting process on machines with double-sided felt rollers - like Bianco ones - is also fundamental because that is "soft" and "smooth". In the past, when there were still no compactors and the necessity of high production quantity besides a maniacal attention to quality and process costs was not so exasperated as nowadays, the production criteria were different, i.e.: 1. the theory of the "minimum stretch", i.e. to stretch the fabric as little as possible during the various processing phases, especially in wet state when the fabric is more prone to elongate - in this field of application Bianco is indeed the market leader with its TENSIONLESS-cutters for wet fabrics, yet; 2. length balancing during the drying phase performed on conveyor belt dryers; 3. ironing, in calender or stenter frame, trying to overfeed fabrics to the maximum; 4. the application of heat-setting resins (in open-width) to reduce the swelling propensity of the cellulosic fibres and to improve dimensional stability.
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