312 



PRESERVATION METHODS 



TIN PLATE SHEETS approximately 26 X 30 Inches 



ROLL COATER - lays on thin protective coating of lacquer 

 or enamel-if required 



Scroll blank 



Punches the end 



unit from the scrol 



I blank and curls up 



Scroll Shear " the outer edge of 



I the end units 



/ 



Bodymaker and 



Sideseamer where Lining Machine ^ 



can body blank is applies the gasket \ 

 notched, edged, compound on the \ 



ed and formed end unit \ \ 



^ I around an expanding mAm^a \ \ 



I*^ mandrel, bumped to 

 ^ close the side seam, 

 Sideseamer preheats, 

 solders, cleans and , 

 cools J 



iDrier for compound 



End units for cantops | 

 after canning operation 



Figure 24,1. Stages in manufacture of cans. {Continental Can Co., Inc.) 



sary to destroy the most harmful types of bacteria and prevent spoilage 

 under normal handling and storage conditions. The time and temperature 

 of the heat process is primarily dependent upon the pi I of the product and 

 the load of bacteria present. Other factors, such as the salt, moisture, and 

 sugar content, as well as the type of product (solid, liquid, etc.) and the 

 type of packing medium all influence the process required. 



