Method for forming corrugated paper container and container made therefrom

(19)

(11)

EP 1 023 992 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	06.06.2001 Bulletin 2001/23

(43)	Date of publication A2:
	02.08.2000 Bulletin 2000/31

(21)	Application number: 00201024.7

(22)	Date of filing: 19.06.1995

(51)	International Patent Classification (IPC)⁷: B31B 43/00, B65D 81/26, B65D 65/40

(84)	Designated Contracting States:
	AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE
	Designated Extension States:
	LT LV SI

(30)

Priority:

20.06.1994 US 262165
20.03.1995 US 407341

(62)	Application number of the earlier application in accordance with Art. 76 EPC:
	95923944.3 / 0766622

(71)	Applicant: The Newark Group, Inc.
	Cranford NJ 07016 (US)

(72)	Inventor:
	Neary, Robin P. Warren New Jersey 07060 (US)

(74)	Representative: Jones, John Bryn et al
	Withers & Rogers, Goldings House, 2 Hays Lane London SE1 2HW London SE1 2HW (GB)

(54)	Method for forming corrugated paper container and container made therefrom

(57) A method for forming a corrugated paperboard container and a container made therefrom having a first layer of flat paperboard (12) to which is attached a second layer of contoured paperboard (14), said contoured layer having a plurality of flutes, each said flute including a first flute tip and a second flute tip, the flute rise being substantially vertical at the midpoint between said flute tips and a perforated layer of paperboard (30) having a plurality of openings (31) therein coupled with said fluted layer along said plurality of said flute tips, said forming method comprising, placing the corrugated paperboard into a stamping die, the stamping die having a male die and a female cavity shaped in the shape in which the paperboard is to be formed; pressing the paperboard between the die and the cavity to apply a pressure to the paperboard; applying heat to the paperboard simultaneously with said application of pressure; and removing said die from the cavity.

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