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AssigneeThomas J. Lipton Co., Division of Conopco, Inc.
InventorsJan Kuipers, Simon C. Martin, Geoffrey W. Vernon, Petrus W. Van Der Zon
Estimating the term…
Packets containing a flowable material are provided with a draw-string or thread to squeeze the packet contents. The packet envelope is formed from a doubled-over web which gives the packet a folded-over edge and which encloses an intermediate portion of the thread close to the folded-over edge. The end portions of the web extend from the intermediate portion of the thread to extend through the opposite edge of the packet. The external ends of the thread are secured to a tag which is attached to the outer face of the envelope. The thread intermediate portion is retained close to said one edge by heat seal means. Apparatus is also described for producing the packets in a continuous or semi-continuous manner.
A method of manufacturing packets containing a flowable material and provided with a length of thread for contracting the packet to squeeze its contents, comprising the steps of forming loops of the thread to lie against successive tags in a row of tags and attaching opposite ends of each loop to its associated tag, placing one face of a web of the packet envelope material against the tags and thread loops with portions of the loops remote from the tags overhanging a side edge of the web, bringing said portions of the thread loops over the opposite face of the web and attaching them thereto, and doubling over the web to a tubular form to locate said loop portions within the tubular form and the attachments of the loops to their tags on the exterior of the tubular form.
Apparatus for producing packets with tag means attached to a thread or draw-string, said apparatus comprising:
Dependencies are inferred from the claim text.