Um, what about the transition from only cork, to a foil liner over the
cork...Before the plastic liner came about?  

Mark Woodard, of the Crown Cap Museum
(http://www.geocities.com/crowncapmuseum/) told me the foil liner was
added in the 1940s.  Anyone have a more definite date?  His date for the
replacement of foil by plastic was mid-1960s...probably based on his
empirical evidence...?

I had contacted him (2 yrs ago) when we found a small, burned pit of
trash (ca. 1940s-early 50s)...with lots of crown caps (but NO bottles,
since they had been recycled!)...and I noticed some of the caps only had
cork liners, while others had foil over the cork...so, of course, I
wanted to know when this change happened (or had the foil simply fallen
off the bare cork ones?).    

I'm never surprised by what people collect...and post online.  :o)



>-----Original Message-----
>From: Robin Mills [mailto:[log in to unmask]] 
>Sent: Friday, October 28, 2005 9:58 AM
>To: [log in to unmask]
>Subject: Re: crown caps
>
>
>Lief  (1965:25) indicates that cork was added as a liner to 
>crown caps in 1909, and further (1965:40) indicates that 
>plastic liners largely replaced cork liners in 1955. Everitt 
>(1982:174, 185) states that whereas plastic liners were 
>introduced in the beer industry in 1955, they did not 
>eliminate cork-lined caps there until about 1965. Cork-lined 
>caps for non-commercial home brewing have still been available 
>until quite recently.
>
>Lief, Alfred  1965   A Close-Up of Closures:  History and 
>Progress.  Glass
>Containers Manufacturers Institute.  New York, New York
>
>Everitt, J. F.  1982  "Bottle Closures," in Beer Packaging: A 
>Manual for
>the Brewing and Beverage Industries.   Master Brewers 
>Association of the
>Americas, Madison.
>
>Regards,
>Robin
>
>
>