PLASTIC HOT DIP PACKAGING

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78-03642A001600020128-1
• Release Decision: RIPPUB
• Original Classification: C
• Document Page Count: 3
• Document Creation Date: December 27, 2016
• Document Release Date: November 7, 2012
• Sequence Number: 128
• Publication Date: October 28, 1955
• Content Type: REPORT

Declassified in Part - Sanitized Copy Approved for Release 2012/11/07: CIA-RDP78-03642AO01600020128-1
C DE AL
PIASo ROT DIP PAcWN
1210-2
Contract No. RD-8$
Task Order No. 2
?roJect Bngineer 25X1
Technician 25X1
6 Ic 1NAL cL BY 2 3 Sq 7 ~
El DECL,S RE`rW ON .2
EXT BYND 6 YRS BY "4-M
REASON! 3 dl-3)
CC-) N F INTIA l J
October 28, 1955
Doe Z9 REV DATE 1JU~~ BY F c7~
ORfG CBMP 1)__ app,_. TYPES-4-.
ORIG CLASS L PAGES REV CLASS --C
JUST -_ Z i NEXT REV -1.0 -t() AUTO: fig 16.2
Declassified in Part - Sanitized Copy Approved for Release 2012/11/07: CIA-RDP78-03642AO01600020128-1
 Declassified in Part - Sanitized Copy Approved for Release 2012/11/07: CIA-RDP78-03642AO01600020128-1
COQ N =H EN~I ~/'IAL
The scope of the halt-dip program is to detexmine the feasibility
coating the following units with a plastic of high halting Pont,
which is durable, which is impervious to water and which will
stand the action of salts that may be found the earth.
6)
8)
9)
10)
.R. Signal Device
Plastic Explosives C3 and C-4
Prima cord and Black Powder Time Fuze
Pull-e Fuze Lighters
Pocket Incendiary Units
Theamit Well Units
Rocket Incendiary Adapters, 2.3611 and 1.5011
Mark I axed/or Mark II Pencil. Units
AC Delay Packages
Matches
The material under cc sideratiox can also be subjected to by tem-
perature without becoming brittle. The major problem encountered
thus far in the hot-dip program is that caused by the expansion of
the air within the package during the dip and shortly thereafter.
The air being subjected to the high temperatures expands and fob
large bubbles in the plastic coating. This results in weak plastic
films at those points and in many instances there is actual rupture
of the plastic
Atteupte to prevent the escape of the air have been made. These
have included the use of aluminum foil wrappers, scrim bags and
rubber latex. Of these the latex seems to be the only one which.
could be used. Even with itg there are diffacul.ties. One will
have to determ the proper viscosity so that all the apertures
will be filed without allowing too much to enter the package.
Several types of coagulants were tested,, and it was found that each
had an effect upon fill strength. The possibility of using wax as
a preliminary coat was also checked however,, the highest melting
wax found) approximately 285*F, had too low a melting point for the
temperature of the hot-dip bath, 3251F. The possibility of pre-
`'eating the package can be ruled out because of the time that a
package must be kept at the elevated temperatures to obtain, a uni-
form to rature. At these temperatures some of the units would be
rendered useless. Cooling the unit naturally aggravates the expan-
scion problem without causing the plastic to set rapidly enough to
entrain the air.
> determine the heat sensitivity of the materials have al
been conducted. It has been found that only the M-34 Detonator and
the primcord are sufficiently heat sensitive to cause difficulty.
COINTOE TIAL
Declassified in Part - Sanitized Copy Approved for Release 2012/11/07: CIA-RDP78-03642AO01600020128-1
 Declassified in Part - Sanitized Copy Approved for Release 2012/11/07: CIA-RDP78-03642AO01600020128-1
The latter can burn at 275'7; the former bee aes
CONFIDENTIAL
t exposure to 325aP. Dar" the dip process it it. doub
any of the units df reach these ter,~eratures.
is ihieh can be hot-dipped as shipped are:
?4Jnit
Fuzee Matches tear strip cans
Rocket incendiary Adapters, 2.36(t and
51"
gate further the materials rich could provide a sati.s-
fact cry preliminary coat and to prepare units for live dipping
of plastic at the demolition site: Once this problem has been
olved, . the remaining problems are essentially ones of detail, and
?
difficulty is anticipated solving them.
CONFIDENTIAL
Declassified in Part - Sanitized Copy Approved for Release 2012/11/07: CIA-RDP78-03642AO01600020128-1