Treating of travelling webs
OwnerPeter Zimmerinventor
Life of this patent
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Abstract
Relatively inflexible travelling webs, such as carpets or rugs having a coating on the reverse side thereof, are guided in a convoluted path around a plurality of guide rollers, and in this path they are heated by being subjected to steam heat, hot air heat, heat-producing radiation or heat derived from other sources.
Claims12
In an apparatus for printing relatively inelastic textile webs whose longitudinal edges are required to travel in a predetermined path through a printing station, a combination comprising textile web supplying means;
- driven roller means for pulling the web off from the supply means and for forwarding said web to said printing station with said longitudinal edges in position to travel in said predetermined path;
- retarding roller means upstream of said driven roller means for retarding the web so that the web is subjected to longitudinal tensioning intermediate said driven roller means and said retarding roller means;
- edge feeler means located between said driven roller means and said retarding roller means for sensing whether one edge of the web deviates from said predetermined path;
- means mounting said supply means movable in a direction transverse to the longitudinal direction of said path and cooperating said feeler means for shifting said supply means in said transverse direction when said edge feeler means senses deviation of said one edge from said predetermined path, to thus return said edge to said predetermined path;
- and heating means for heating the web along a major portion thereof between said driven roller means and said retarding roller means to enhance the stretchability of said portion of said web to avoid fold formation during lateral shifting of said supply means.
A method for forwarding a relatively inelastic textile web from a web supply toward a printing station at which the longitudinal edges of the web are required to travel along a predetermined path, comprising the steps of moving the web in longitudinal direction under tension from the supply means along said predetermined path towards said printing station;
- moving the supply means in a direction transverse to said longitudinal direction if the web deviates from said predetermined path;
- and heating a major portion of the tensioned web to enhance its stretchability to avoid fold formation during movement of the web in said transverse direction.
Dependencies are inferred from the claim text.