Patent ID: 6582028
Filing Date: 2003-06-24
Classification: A46D,B29C

Abstract:
A method for producing a brush including a body, and at least one bristle bundle carried by said body, said bristle bundle having a plurality of oriented bristle filaments, comprising:(a) introducing one end of the bristle bundle into the cavity of a mold (12) via a channel opening (4) contained in one wall (2) of said mold, thereby to cause said one bristle bundle end to project from said wall into said cavity; (b) blowing a hot gas stream longitudinally against the end face of said bristle bundle one end portion to melt said end face and drive back the melt so produced over the circumference of the non-melted bundle one end, and into contact with said mold one wail thereby to form an enlargement such that the bristle filaments on the outer circumference of the bristle bundle adjacent the solidifying melt front are cooled by the mold in order to form said enlargement encompassing a non-melted length of the bristle bundle without any partial melting or thermal reorientation of the molecular chains of the bristle filaments of said non-melted bundle; (c) axially displacing the bristle bundle so that the enlargement is arranged in spaced relation with said mold one wall and said mold channel opening; and (d) subsequent to said axial displacement of said bristle bundle, filling the mold cavity with a flowable material, thereby to define at least one portion of the brush body containing said enlargement.