Mandrel for use in manufacturing an angled and cylindrical container

• US 4,622,026 A
• Filed: 11/29/1985
• Issued: 11/11/1986
• Est. Priority Date: 07/08/1983
• Status: Expired due to Fees

• Current Assignee: Toppan Printing Co., Ltd. (TOPPAN Holdings, Inc.)
• Original Assignee: Toppan Printing Co., Ltd. (TOPPAN Holdings, Inc.)
• Inventors: Hirayama, Takahisa, Ito, Sukenori, Take, Yoshiaki
• Primary Examiner(s): Husar, Francis S.
• Assistant Examiner(s): NOT, DEFINED
• Application Number:
  US06/803,052
• Time in Patent Office: 347 Days
• Field of Search: 493/101, 493/104, 493/108, 493/111, 493/152, 493/153, 493/450, 493/454, 493/455, 493/456, 493/467, 493/470, 493/471, 493/473, 493/476, 493/901, 493/451, 493/457, 493/175
• US Class Current: 493/104
• CPC Class Codes: B31B 2160/10 rectangular and flat, i.e. without structural provision for thickness of contents
• CPC Class Codes: B31B 50/282 involving stripping-off formed boxes from mandrels
• CPC Class Codes: B31B 50/594 Modifying the shape of tubular boxes or of paper bottle necks
• CPC Class Codes: B31B 70/00 Making flexible containers, e.g. envelopes or bags

Abstract

The present invention relates to a mandrel for use in manufacturing a container in which the mandrel includes a mandrel body in the shape of a cylinder, recessed portions located about the circumference of the mandrel body forming it into a polygon with inwardly depressed sides forming curved surfaces thereabout, and connecting portions separating the recessed portions and located substantially at the cylindrical outer surface of the mandrel, as well as a central channel in the mandrel and apertures located within the recessed portions and connecting them with the central channel so that a vacuum can be applied through the apertures to conform a container body placed on the outer surface of the mandrel to the shape of the mandrel.

Claims

1. A mandrel for use in manufacturing a container comprising a mandrel body having an outer surface substantially corresponding to the shape of a cylinder, a plurality of recessed portions located about the circumference of said mandrel body, said plurality of recessed portions forming said mandrel body into a shape having a cross-section substantially corresponding to a shape of a polygon whose sides are inwardly depressed from said substantially cylindrical outer surface to form curved surfaces, a plurality of connecting portions separating said plurality of recessed portions, said plurality of connecting portions being located substantially at said cylindrical outer surface of said mandrel, a central channel located within said mandrel, and a plurality of apertures located within said plurality of recessed portions and connecting said plurality of recessed portions with said central channel, whereby a vacuum can be applied through said plurality of apertures to conform a container body placed upon the outer surface of said mandrel to the shape of said mandrel.

2. The mandrell of claim 1 wherein said plurality of recessed portions are provided in an intermediate portion of said mandrel, and wherein said mandrel includes upper and lower portions surrounding said intermediate portion, said upper and lower portions having a substantially cylindrical configuration.

3. The mandrel of claim 1 wherein said plurality of apertures comprises a first plurality of apertures, and including a second plurality of apertures located at said plurality of connecting portions and connecting said plurality of connecting portions with said central channel, whereby a vacuum can be applied through said first and second plurality of apertures.