レトルト内に於ける蟹及び鮭罐詰の膨脹度と罐内壓力

抄録

With the view of determining the allowable tightness in seaming the crab and salmon cans, the elastic deflection of the end plates and the internal pressure of 1 lb flat salmon cans and 1/2 lb flat crab cans were observed during retorting. The cans swell the most, after the finish of steaming, when the excess of steam is gradually piped out from the retort. At such stage, the internal excess pressure of the cans reaches 12 to 13 pounds per square inch, with 1/2lb flat crab cans, and 15 to 16 pounds per square inch, with 1lb flat salmon cans (red salmon), both in the ordinary processing now adopted in the canneriesin Kamchatka.