Helically winding an extruded web to form a wall of a heated hose about a central axis, extruding a bead of plastics material around a heating wire such that the extruded bead comprises the heating wire at a first location within a cross-section of the extruded bead, helically winding the extruded bead onto the wall of the hose to provide a support helix, and exerting tension on the heating wire to draw down the heating wire toward the central axis such that the heating wire migrates radially inward from the first location to a second location within the cross-section of the extruded bead.

Unwinding a portion of a support helix that comprises a heating wire from a wall of a hose at an end of the hose; sleeving a length of heatshrink tubing at least partly onto the unwound portion of the support helix; heating the heatshrink tubing to shrink onto at least part of the unwound portion of the support helix; and at an end of the unwound portion, directly connecting the heating wire to an electrical contact of an electrical connector.

An undermold coupling to couple a hose to a hose fitting includes: a tubular portion to be inserted into a hose interface of the hose fitting; threads formed on an inner surface of the tubular portion to engage a support helix on an end of the hose as a set of threads; and a first grating comprising a first plurality of elongate portions to intermesh with a corresponding second plurality of elongate portions of a second grating of the hose interface, wherein the first plurality of elongate portions extend into a second plurality of slots defined by the second plurality of elongate portions, and the second plurality of elongate portions extend into a first plurality of slots defined by the first plurality of elongate portions.

A paint roller manufacturing system includes a cover dispenser for continuously dispensing a windable width of paint roller cover fabric, a fabric supporting and advancing device for supporting the fabric and maintaining a width-wise dimension of the paint roller cover fabric as the fabric advances, a fabric coating applicator for applying a coating to the back side of the paint roller cover fabric while the fabric supporting and advancing device maintains the fabric in a width-wise dimension, and a compressing roller positioned downstream of the fabric coating applicator and configured to apply a compressive force on the coating after it has been applied to the back side of the paint roller cover fabric and while the fabric is supported by the fabric supporting and advancing device. In two-strip embodiments, first and second strip dispensers continuously dispense a first and second windable width of strip material. A guide system guides the first and second strip coming from the first and second strip dispensers to be wound about a mandrel and guides the coated paint roller cover fabric from the fabric supporting device to be wound about the first and second strips. An adhesive applicator is configured to apply adhesive on substantially all of the outer side of the first and second windable strips and positioned to apply adhesive to the outer side of the first and second windable strips upstream of a location where the coated paint roller cover fabric is wound about the first and second strips.

A method of spirally winding a thermoplastic profile in the manufacture of welded plastic tubes and a winding apparatus for manufacturing a spirally wound tube. A thermoplastic profile is received on a plurality of sliding members being arranged in an axial direction of the tube to be manufactured and defining an essentially cylindrically shaped winding surface with a diameter essentially corresponding to the inner diameter of the tube. The profile is directed along a spiral path towards the previous turn of the profile in order to force opposite edges of the profile together for welding. The radial position of the sliding member is adjusted to control the tension in the thermoplastic profile and the force with which it constricts itself around the winding surface as defined by the sliding member.