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Hooks and loop fastener attached to a bobbin by ultrasonic welding
| Details |
Inventors: Scaglia, Enzo;
Assignee: Scaglia SpA (Brembill, IT)
Primary Examiner: Walsh; Donald P.
Assistant Examiner: Webb; Collin A.
Attorney, Agent or Firm: Antonelli, Terry, Stout & Kraus, LLP
Method to attach an annular band (11) of adhesive material such as Velcro (hook and loop fastener), felt or similar material onto a substantially cylindrical support (10) onto which it is suitable to wind a product for example for spinning for example of the sliver type in which, the annular band (11) is attached to the support (10) by means of welding along at least one circumference. a substantially cylindrical support of the cop or spool type, onto which it is suitable to wind a product for spinning of the sliver type, includes an annular band onto which is attached a corresponding outer annular band (11) of substantially adhesive material, such as Velcro (hook and loop fastner), felt or similar material, the annular band (11) being attached to the support (10) by means of welding made along at least two circumferences arranged in proximity with the peripheral edges of the annular band (11). |
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DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT The cylindrical support 10 for textile material, partly shown in the attached FIGURE, is of the type commonly known as a "spool" and is suitable to wind thin yarns of limited consistency, such as for example slivers of fibres or similar material, into superimposed layers.
An annular band 11 made of special material suitable to anchor the leading ends of the threads, such as a band made of Velcro (hook and loop fastner), felt or similar material, as partly shown in the FIGURE, is applied to the support 10 in an upper area thereof.
According to the invention, the annular band 11 is not only welded lengthwise in its area of joining but is also attached to the support 10 by means of point welding along at least one circumference.
The welding along the circumference affects a fraction of the height of the annular band 11; this fraction is contained in a value of between 1.
5 and 3 mm.
According to a variant, indicated here by a line of dashes, the annular band 11 is welded along one circumference with a continuous welding 18 onto the support 10.
In the case shown in the FIGURE, the point welding is performed on three circumferences, a first circumference substantially coinciding with the lower edge 12 of the annular band 11, a second circumference substantially coinciding with the median zone 13 and a third circumference substantially coinciding with the upper edge 14 of the band 11.
According to a variant which is not shown here, the welding is performed on a plurality of intermediate circumferences between the lower edge 12 and the upper edge 14.
The welding points, respectively indicated by the reference number 15a for the lower edge 12, 15b for the median area 13 and 15c for the upper edge 14, are staggered in such a way that any segment 16 parallel to the longitudinal axis 17 of the cylindrical support 11 meets at least two of the welding points 15.
In this way the welding points made on the three circumferences are arranged along rectilinear segments arranged at an angle to the longitudinal axis of the support
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Telecommunications 
