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TM 746-10
(j) Close top flaps and seal all openings with
CAUTION
tape (fig 3-27).
(k) Mark and label the box per the instructions
When dispensing foam, protective goggles or
face shield, rubber gloves, and safety clothing
shall be worn by the operator.
(1) After the foam has fully expanded, allow for
(a) Measure the length, width, and depth of the
sufficient curing time (approximately 15 minutes). Trim
item.
excess foam from the top, if necessary, and secure the
Note
box top with nails or metal staples.
When measuring the item, measure to and
(m) Mark and label the box as specified in
from the farthest points. Determine the desired
thickness of the foam (see table 3-2) and
(4) Encapsulated pack opening.
To open an
fabricate the plywood base, fiberboard sheet,
encapsulated pack, a handsaw, a rip type saw with a
and protective sleeve, as specified in figure 3-
medium blade, and a pry bar with a wide flat tip will be
needed.
(b) Preserve and wrap the item, as specified in
(a) With the handsaw, cut along the marked cut
line of the box shell. After cutting through the shell on
(c) Fabricate the box base and nailing strips.
all four surfaces, continue cutting completely through
The nailing strips shall be fabricated from 2by 2-inch
the foam until the blade contacts the protective sleeve
nominal lumber. Form two frames from the nailing
all around.
strips with the outside dimensions the same as the
inside dimensions of the box in length and width. The
(b) Insert the end of the pry bar into the cut and
base shall be made of %-inch minimum plywood. Cut
pry up on all four sides of the box. If the foam does not
the skids from 3by 4-inch nominal lumber. The number
separate evenly all around, reinsert the handsaw and cut
of skids shall be determined by the width of the box.
all around the protective sleeve ensuring that the
Skids shall be no more than 24 inches apart.
perimeter of the foam is cut through.
(d) Bolt the base, bottom nailing strips, and
(c) After cutting, lift the top half of the box and
skids together with %-inch bolts at the skid ends and nail
place in an area that is free from dirt, oil, grease, or any
the base to the skids. Fabricate the box top from %-
other foreign matter.
inch minimum plywood.
(d) After removing the item, place the top half
(e) Fabricate support blocking from high
of the pack onto the lower half, secure with tape, and
density, scrap foam. If the foam will not support the
store in a clean, moisture-free area. Obliterate all
weight of the item, reinforce with plywood. The blocks
address markings.
shall be cut to dimensions that will allow the item to rest
in the center of the box.
(5) Reusability. Most FIP packs can be reused. In
(f) Determine cut line. To determine the cut
order to maintain the pack in a reusable condition, follow
line, refer to figure 3-23.
these procedures:
(g) Wrap the horizontal plane of the item with
(a) Exercise care when opening and removing
the protective sleeve, completely covering the cutting
the item to prevent damage to the foam or the box.
plane and allowing 3 to 4 inches on both sides. Secure
with tape.
CAUTION
(h) Wrap the entire item and protective sleeve
Do not remove tape from the fiberboard boxes.
with kraft paper with the smooth surface facing the item.
This procedure often tears the outer layer of
Secure with tape in such a manner that there is
fiberboard and shortens the life of the box. To
sufficient overlap to prevent the rising foam from
open taped boxes, cut the tape down through
seeping in against the item.
the box opening.
(i) Lower the wrapped item onto the support
blocks.
(b) After item removal, assemble the complete
(j) Assemble the fiberboard shell and upper
pack and secure with tape.
nailing strips onto the base as shown in figure 3-23.
(c) Mark or stencil "REUSABLE PACK, DO
(k) Dispense foam. The quantity of foam that is
NOT DESTROY" on one side of the box in letters a
dispensed is normally specified by the equipment
minimum of half an inch high. Obliterate obsolete
supplier but should surround the item and fill the
container.
3-38
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