The Manufacture of Tomato Products: Including whole tomato pulp or puree, tomato catsup, chili sauce, tomato soup, trimming pulpHier, W. G. (Wayland Gladstone)
Science
The Manufacture of Tomato Products: Including whole tomato pulp or puree, tomato catsup, chili sauce, tomato soup, trimming pulp
Hier, W. G. (Wayland Gladstone)
Tomato products
If the average packer could see just how little of the inside surface of
his 5–gal. cans is actually washed, he would be surprised. About fifteen
seconds is sufficient time to spray the inside of the cans, and then the
water valve can be closed and the steam valve turned on. The steam
should be kept on for a full minute and kept on strong. The idea is not
merely to heat the can but to sterilize it, at least to some degree,
before the pulp is admitted. The average employee steaming 5–gal. cans
leaves the steam on ten seconds at the most, and often not more than
three seconds. Such a short steaming does very little good. The space of
time between the steaming and filling should be just as short as
possible. The employees should not be permitted to keep a half dozen
cans steamed ahead all the time so that they are cold by the time the
pulp enters them.
Filling and Capping
As stated in the previous chapter, the temperature of the pulp when it
is filled should be at least 170 degrees F. and preferably above 180
degrees. The cans should be filled clear to the top with the pipe or
hose which conducts the hot pulp from the finisher; they should not be
topped off out of a dipper which contains luke warm pulp and is used for
topping purposes. It is not necessary to do this topping and the
practice should not be permitted. The sponges which are used for wiping
the edges of the cap hole should be kept in a bucket of clean, hot
water, and put back in the bucket after being used on a truckload of
cans. The capping and tipping job should undergo inspection before the
cans are trucked away.
Handling Filled Cans
Cans of filled pulp should be handled carefully. The cans should be set
down easily, so as to strain the seams as little as possible. Of course
the laborer wants to let go of cans of red-hot pulp just as quickly as
possible, but it is not necessary to drop them several inches, and the
employees should be taught to set the can on edge and then let its
weight straighten it up. If the employee is given good thick gloves it
is just as easy to handle the cans carefully. I had occasion at one time
to check up on the percentage of swells resulting from one pile of pulp
which was stacked by an old hand who knew how to handle pulp easily and
carefully, and another pile from the same day’s run which was stacked by
a gang of new and uninstructed help who simply picked the cans off the
truck and dropped them in place. These were second-hand cans, and the
difference was considerable.
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