VEGETABLE AND FRUIT DEHYDRATION 



129 



drops for export shipment. Exposure to rain and immersion of cases 

 in salt water during landings are 2 more conditions that frequently 

 must be withstood. 



SUBSTITUTES FOR TIN-PLATE CONTAINERS 



Wartime shortages of steel and tin have stimulated a search for 

 containers that will successfully replace tin plate in the packaging 

 of dehydrated foods. The substitute container must be one that ap- 



Figure 63.— Sealing machine which forms a 20° angle, hermetic seal on cans. 

 569074—44 9 



