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AssigneeHauni Richmond, Inc.
InventorsAlfred Hinzmann, Peter Preisner, Timour Shu, Wojciech Drewnowski
Estimating the term…
A continuous web of wrapping material for catamenial tampons or other commodities is advanced lengthwise first through a station where it is acted upon by a perforating knife to weaken longitudinally spaced-apart portions of the web transversely of the direction of advancement. The web is thereupon converted into a continuous tubular body and the leader of the tubular body is engaged by a pair of rolls which pull the leader in the direction of lengthwise advancement of the web in order to break the material of the web along successive weakened portions. The thus obtained discrete tubular envelopes are moved sideways, one end portion of each envelope is closed, a commodity is introduced through the other end portion, and the other end portion is closed to confine the commodity at both ends. Such mode of making tubular envelopes ensures that the material of the web is not wasted at all and that the envelopes need not be stored prior to reception of commodities.
A method of transforming an elongated flexible web having two longitudinally extending marginal portions into a succession of discrete tubes each having spaced-apart first and second end portions, comprising the steps of weakening a plurality of longitudinally spaced-apart substantially transversely extending portions of the web;
Apparatus for transforming an elongated flexible web having two longitudinally extending marginal portions into a series of discrete tubes each having spaced-apart first and second end portions, comprising means for weakening a plurality of longitudinally spaced-apart substantially transversely extending portions of the elongated web;
A method of converting a running web having two marginal portions and first and second sides into a tubular body, comprising the steps of inverting one marginal portion of the running web inside out so that the second side of the inverted marginal portion overlies the second side of an adjacent first intermediate portion of the web;
A method of separating two coherent sections of an elongated tubular body of deformable sheet material wherein the sections are connected to each other by a weakened annular portion, comprising the steps of advancing the tubular body lengthwise along a predetermined path;
Dependencies are inferred from the claim text.