Maxi Crown Sealing Machines AB - the development history of the MaxiCrown closures

History
easy to open tear-off closures

The crown cork was invented in USA, the patent issued 1892 and has since then been the dominating closure for bottles with beer and other beverages. The crown cork provides an excellent sealing performance at low cost. However, the cap has to be opened with a tool and can be opened and resealed without being recognized by the user. Following two features - easy opening and tamper proofness - have today become important concepts for the consumer and the manufacturer of beverages.

During the years different easy to open tear-off closures have been introduced into the market:

1931	ALKA	A tear-off cap made from soft aluminium without score lines and with cork disc liner.	Wicanders, Sweden.
1960th	Rip Cap	A one-piece cap with pull-ring made from 0,22 - 0,24 mm semi-soft aluminium. The cap opens along pre-punched score lines by pulling the ring out and up over the shell. PVC or PE liner.	American Flange, USA.
1968	MaxiCap	A one-piece cap with pull-tab made from 0,22 mm semi-soft aluminium. The cap was opened by pulling the tab out and up over the top of the shell along pre-punched score lines.	Wicanders, Sweden.
1982	MaxiCrown	A two-piece cap with pull-ring made from 0,17 mm tinplate with the ring jointed to the cap shell. The cap opens by pulling the ring out and up over the cap shell along prepunched score lines. This cap is sold under the name Ring Crown since the expire of the patent 1999.	Wicanders, Sweden. Inventor: Sven-Ake Magnusson, Sweden.
1992	MaxiCrown P	A two-piece cap with shell made from 0,21 or 0,24 mm semi-soft aluminium and the ring from HDPE. The cap opens by pulling the ring up over the cap shell along pre-punched score lines.	Japan Crown Cork Co, Japan. Inventor: Sven-Ake Magnusson, Sweden.

For a comparison beetween MaxiCrown and other caps, see our advantages page.

MaxiCrown Patents.

The Inventor, Mr Sven-Ake Magnusson, Sweden, is holding all issued MaxiCrown patents in Europe and South America.

Toyo Seikan Kaisha Ltd (TOYO) and its subsidiary Japan Crown Cork (JCC) are holding all issued MaxiCrown patents outside Europe and South America.

Copyright © 2002, MaxiCrown SM AB. All rights reserved.	For more information, contact: info@maxicrown.se
MaxiCrown Sealing Machines AB Rödbergsvägen 25, SE-473 34 Henån, Sweden Tel: +46 703 33 00 17, Fax: +46 304 32822

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