CONTRAST RD-III, TASK I, WITH GENERAL TIRE AND RUBBER COMPANY, AKRON, OHIO - REQUEST FOR EXTENSION OF TIME

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78-03642A000700070002-5
• Release Decision: RIPPUB
• Original Classification: S
• Document Page Count: 15
• Document Creation Date: December 22, 2016
• Document Release Date: May 4, 2011
• Sequence Number: 2
• Publication Date: December 17, 1957
• Content Type: MEMO

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December 10, 1957
Reference: P.N. 528
Attention: Howie
Attached is a copy of Report No. 314 Supplement "A",
Progress Report - Waterproof Container, dated December 10,
1957.
Very truly yours,
n r eve opmen Department
CONFIDENTIAL
ALL AGREEMENTS CONTINGENT ON STRIKES, ACCIDENTS OR DELAYS BEYOND OUR CONTROL AND REQUIRE APPROVAL OF AN EXECUTIVE OFFICIAL OF THE COMPANY.
ALL QUOTATIONS AND SALES CONTAINED HEREIN SUBJECT TO CHANGE WITHOUT NOTICE.
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V 25)
REPORT 314 Sup. "A"
MODEL DATE 12-10-57
TITLE
PROGRESS REPORT - WATERPROOF CONTAINER
PN-528
SUBMITTED UNDER
Contract RD-111
PREPARED BY
REFERENCE-
I
APPROVED BY1 25X1
CHECKED BY
Photos 14890-1
11
NO. OF PAGES 14890-2
and Sample Data
NO. OF DIAGRAMS
REVISIONS
NO.
DATE
SY
CHANGE
PAGES AFFECTED
COPS Imun, At
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ANALYS#S
CHECKED BY
N0. SUBJECT,
I.
Purpose
Methods
Conclusions
Recommendations
PN-528 Activity
PHOTOS
General Tire #14890-1
General Tire #14890-2
SAMPLE DATA
Central Development Request
Central Research Laboratories Request
Expenditures on PN-528
PAGE Index 25X1
31425X1 A
REPORT No.
MODEL
DATE 12-10-57
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ANALYSIS-_
PREPARED B
CHECKED BY
APPROVED B
PAGE 1 25X1
314 25X1 A
REPORT No.-
MODEL
DATE 12-10-57
I. The purpose of this report is to augment our prior report No. 314 in
logging progress achieved in the performance of Contract RD-111 for the
development and prototype delivery of to water proof containers. Two
methods of closures are to be attempted, one a double slide closure, the
other a dove-tail bead type closure.
We have logged monthly progress for September and October in Section
V of this report.
II. The methods intended for this period remained unchanged, namely-
To survey and select suitable container fabrication material
To accommodate our double slide closure to use on. subject
containers.
To accommodate a dove-tail wire bead (or equal) closure within
the container design.
To deliver a prototype bag for each of the two designs.
III. The conclusions arrived thus far may be summarized as follows:
A. Pertaining to the selection of optimum container material:
1. We have further confirmed a laboratory technique for
laminating a foil suitably to a neoprene coated base
cloth. Our is evaluating the feasibility
of processing such material on a production basis using
our avilable calendering facilities. No pilot run of such
material has been contemplated,until this type of lamin-
ate is established as optimum,,
2. Through discussions with Dobeckmum Company personnel we
have obtained samples of "aluminized" film such as saran
in the attempt to laminate this film with neoprene coated
base fabric. Providing the aluminizing furnishes an im-
proved barrier to deter transmission one advantage in a
saran film laminate would be in the stretchability of
the laminate which offers a great advantage in the fabri-
cation techniques employed to build a container. The
lack of strength or "waroing" of the alum foil laminate
renders the use of such material awkward in building a
container.
3. Even if the "aluminizing" of saran is not conducive to
increasing the barrier to water transmission we are inquir-
ing into the use of saran and several new stretchable
films as suitable laminates in themselves:
4. Dobeckmum's attempts to aluminize several of our neoprene
sheets and several samples of Haartz-Mason and Vulcan coated
fabrics were not successful. The primary defection. was
in the overheating or charring of the alum spray or rubber
during the required high heat inherent in the process.
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ANALYSIS PAGE 2
PREPARED BY REPORT No.-314 Sup. A
CHECKED BY MODE!
APPROVED BY DATE- 12-10-57
5. Until receipt of properly sheeted saran and films which
must then be laminated to our available coated stocks
and tested for water transmission, requiring about 30
days, the status of our search for optimum container materi-
al remains on the level of inquiry into possible combination
of laminate materials.
B. Pertaining to fabrics now being used to construct test containers:
1. Comparative data of a limited number of water transmission
tests vs the usual MVT tests of available coated fabrics
indicate that transmission of water contacting the material
runs as high as 4 times the amount generally indicated in
MVT tests.
2. Generally, the pre-cured coated material offers utmost
reliability as a barrier to water transmission, well chosen ',;-
adhesives assure strength in peel and tensile tests very r.
comparable to that of vulcanized seams.
Consequently trial containers of both the vulcanized and
air-cure construction have been added to the yellow con-
tainer demonstrated. -All are awaiting satisfactory closure
assemblies.
C. Pertaining to the slide closure:
1. Since demonstration of the 18" closure last October, a
new mold for a 70" closure has been obtained. Several
attempts for its use has indicated revision of the central
core section which proved too fragile to withstand shear-
ing of rubber during closure.
2. Our compounders have run experimental amounts of several
softer stocks designed to provide easier molding. The
first compound was found to have too low a tear resistance.
The latter compound has not yet been molded or evaluated.
3. Upon successful molding of the sealing section we antici-
Date installation of the slide fasteners and metal seal
upon a six inch diameter fabric cylinder for preliminary
leak tests.
4. Subsequently a duplicate assy will be attached to each of
the three containers from which one will undergo a 24 hr,
a 48 hr, a week and a month's leak test under a 15 ft.
head of water.
5. We consider our procedure to be on the threshold of a
usable closure.
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ANALYSIS
PREPARED B
CHECKED BY
APPROVED B
D. Pertaining to a dove-tail bead or similar closure:
PAGE __..3
_
REPORT No.314 Sup. _A
MODEL _
DATE 12-10-57 _
1. Hand built, drum cured models of this closure are too
variable in dimensions to permit adequate evaluation.
2. From the point of molding, this approach is apt to re-
quire considerable "trail and error" in defining proper
molded configuration.
3. Our progress in this approach has been only fragmentary.
E. Pertaining to accommodation of closure to prototype containers
to be delivered as suitable for testing:
1. From our discussion of closure progress above -e foresee
possible a container suitable for our tests in four weeks
2. A subsequent program of 5 Meeks testing is required.
IV. Recommendations:
A. To provide relief for time delay experienced in re-w,rking mold
and devising"suitable compound for molding it is requested a
target date for assembled prototype be made January 15, 1958.
B. To provide 52.weeks leak testing at our facility a finished
target date for February 21, 1958, is suggested.
C. That those phases of lamination enumerated above be completed
with min. effort possible. to provide positive or negative evalua-
tion of commercial feasibility of a practicable laminate.
D. A final report on effort & delivery be presented by March 21, 1958.'
E. The balance (10,10) of funds to be utilized to finish laminate tests
now under way and to finish assembly of a prototype suitable for
testing. Enough funds should be available to provide a final report.
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ANALYSIS
PREPARED BY_
CHECKED BY
APPROVED BY
PAGE- 4
REPORT No314 Sup. A
MODEL _
DATE_ 12-10-57
V. The following activity was logged against PN-528:
A. Pertaining to obtaining optimum laminate material:
Work Request No. 1 (8/15/57 to 9/20/57)
Moisture vapor transmission of Haartz-Mason yellow life vest nylon,
coated one side, Neoprene, MIL-C-19377.
Tested to ASTM E-96 with sample data sheets attached.
Observation: The MVT data obtained was exceeded by almost five to
one when samples were exposed to contact with liquid water. This
contact figure we have termed Water Transmission Rate, or WT data.
Work Request No. 2 (8/23/57 to 8/30/57)
Lap seam tensile test using C-165 air cure cement on Haartz-Mason
nylon fabric, coated one side, Neoprene, yellow, MIL-C-19377.
Observation: Poor peel and tensile results using GTR cement.
Regarded unusable for container.
Work Request No. 5 (9/10/57 to 10/16/57)
Laminating H & M twill life vest fabric, MIL-C-19377:
1. Neoprene to Neoprene uncured.
2. Neoprene to pliofilm over Mylar cured.
3. Neoprene to aluminum over polyethylene cured.
Observation task No. 1: Accomplished in 30 minute press cure at
300? F. Results: Peel and tensile test satisfactory.
Observation task No. 2: Former attempts unsuccessful due to
blistering of pliofilm and delamination thereof. Such defects
voided this test by not cementing pliofilm. Cement used on Neoprene
was Angier Airdry, Neoprene type without accelerator.
Sample of this laminate was demonstrated October 16, 1957.
Observation task No. 3: (Sample similar to Task No. 2 using
pliobond was demonstrated October 16, 1957) Improved lamination
obtained through use of Bostick 4025/MEK cement, 5 minutes at
2500 F. at 100 PSI ram.
Work Request No. 6 (9/10/57 through 10/16/57)
Water transmission of sample in Task.No. 3 of Work Request No.-5:
Observation: Consistent test results were not obtained because of
doubtful seal. Good seal between cup and nylon portion of Neoprene
fabric was difficult to obtain. Results: Inconclusive.
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ANALYSIS
PREPARED BY
CHECKED BY
APPROVED BY
PAGE 5
REPORT No.314 Sup. A
MODEL
DATE 12-10-57
Work Request No. 7 (10/3/57 through 11/7/57)
Water transmission test of Vulcan #7136 fabric, 3 oz. nylon,
Neoprene coated, .022 ga., cured.
Observation: Rate of water transmission is about one-half that
of the MIL-C-19377 Haartz-Mason used in first yellow container
demonstrated October 16, 1957. (4.4 to 5.1 MG/24 hrs./in.2/
complete fabric thickness.) This is also in accordance with da
published by Vulcan.
Work Request No. 8 (10/3/57 through 11/7/57)
Water transmission test Vulcan fabric, style #4137, Neoprene
coated, 5 oz. nylon, .032 ga. -p
Observation : Best water transmission rate thus far, about 25%
permeation of Haartz-Mason fabrics. It should be noted that this
gage exceeds Haartz-Mason fabric by about 10 mils.
Work Request No. 9 (10/3/57 through 11/7/27)
Water transmission test Vulcan Buna "N" coated 3 oz. nylon,
style #7203, .022 ga.
Observation: Water transmission rate equals .032 Neoprene in
Work Request No. 8. This material practically impossible to
obtain satisfactory seams in open steam.
Work Request No. 10 through 22
Research & Development Laboratories have been entered with primary
emphasis on obtaining water transmission rate of various materials
and laminates. For example, a repeat on the above tests are made
on some samples in which the laminate film has been perforated
several places so that we may check the degree of channeling, or
wicking, of the leak between the laminating layers. Our most
recent requests have emphasized the use of a stretchable type film
which may be applicable in the development of a material for wrap-
ping items for storage as well as for use in the subject container.
B. Pertaining to the waterproof container development:
1. A 70" mold, as shown in photos 14890-1 and -2, was drawn up
and prints sent to General Metals for fabrication.
Delivery: 4 weeks.
2. Both cured and uncured fabrics from Haartz-Mason were fabricated
into prototype containers, however, the container and a number
of various sample seams of the "uncured" type fabric proved in-
ferior in both seam strength and predictable shrinkage. Haartz-
Mason personnel later advised this type material not suitable
for open steam cure.
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r 1V-~ C25
ANALYSIS PAGE 6 25X1
PREPARED BY REPORT No.345 p_._ A
CHECKED BY MODEL
APPROVED BY, DATE- 12-1 OZ57
3. A T-15 tread stock was used to load the 70" mold when received,
however, improper prewarming of stock lead to warping of core
of mold upon ram closure. Rework of core again resulted in 11
week delay.
4. Specially soft loading compounds have been utilized to accommo-
date use of mold with easily warped core, the results of which
are also shown in accompanying photos. These inserts have not
as yet been assembled into a zipper closure. An improved modulus
stock is being tried for this mold.
5. The better of the two seals will be assembled on body fabric
made to fit a steel mandrel for preliminary leak tests.
6. Pending the above, duplicate construction will be employed on a
suitable prototype container.
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'erort Lo, 314 up, rage 8
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 91 LI_ 111'1.111 II Il ~IIIIII~' VIII II Hill,[ III I
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11
pL iz _D64-r,~ rt No. 314 SUP. "A" Page 9
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Seap1r,~ia iianetlirig Stud Y
Attn: ,r. Sanger: Research & Deve1o nlnt
Date
Request: Att +vd #. y VqOpVW 'm *2= 7wl3y jtte v4et
ad mla .409 ire, ?Z'?T,?~-i9 otwed. MmUtwe Vapor m lord ai t
m?--4;~
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to ASS (J69? (gr m / t~?/mF c ~/ea r t t
to cold.
Intended :me:
Your ecmient3 are - irivite: .
Before return.thg t is folder labeled
1:.. Total hours labor:,' -.Technician
. V1C1-1\iill. J A
Administrative
Charges for material: Outsid4..
Inside
3., Any. charges for tool, outside servic?s,
etc,
should be noted
to our attention.
xip
., Arc, references sufficient to relate t ion of
work done?
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,
 ILdl
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i9 M P4. C Z,4 Report
Date Submitted:-
Sample No.: Analytical Order No.: 54 117
CENPRAL RESEARCH IABORATaR ES
Analytical Request Sheet
12Z 7J (O
Submitted By: Location of Data
No. of Samples:
Project No.: ,1 I L-f -.123 7 7 Date Completed:
Sample Description and Composition: f 2dA&A,r4i-
-1!'377
Request4p!~?~_g- emal /
ul~~~t
/I 7Z I
r 4F
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 IAL
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ANA,LYSJS
PREPARED B
CHECKED BY
APPROVED B
EXPENDITURES ON PN-528
Estimate
100%
Engineering
$1,308.00
Labor
1,356.00
Research
1,232.00
Material
460.00
Purchases
260.00
Total
$4,616.00
Balance
PAGE 11'
REPORT No. 314 Sup. A
MODEL
DATE_ 12-10-57
CONFIDENTIAL
Used
End Oct.
Used
%
_
$1,923.56
147
866.82
63.9
651.90
52.9
448.73
98
182.8
70
$4,073.85
88.2%
542.15
11.8%
1. Engineering requirement higher than anticipated because need for mold
and repeated revisions not in original estimate.
2. Much engineering and research combined planning for laminates are
venturing into a "task 2" or "wrapping material for storage" phase.
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