ALBERT R. MANN
LIBRARY
New York State Colleges
of
AGRICULTURE and Home Economics
CoRNell UNiversity


THE PROBLEM CF
SEAM STRENGTH AND THREAD DURABILITY
INTRODUCTION
The Clothing Manufacturers Association of the United
States of America has prepared this Production Research Report
with the cooperation of Singer Sewing Machine Company, the in on
Special Sewing Machine Company, and the American Thread Company.
The Report is based upon data supplied by these companies, and
the practical experience of prominent factory managers in our
Industry.
This Report details and analyzes the problems that are
encountered in the clothing factory on matters referring to thread
strength, the durability of seams, and the proper needles that
might well be used so as to acquire a maximum of seam strength
With a minimum of possible damage to the fabric. The problem of
proper sewing has become increasingly important to all in view of
the many new man-made fabrics being introduced in clothing.
This Report is one of a series that is being prepared
for the benefit of the Clothing Industry in order to increase
productive efficiency in all phases of manufacturing men's and
boys' clothing.
Harry A. Cobrin
Executive Secretary
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Which is most evident when the garment is being sewn. Now, the
initial strength or pull of the seam is easy to determine in the
Shop from practical experience during the sewing process, but
seam durability can only be tested When the consumer has worn the
garment for considerable time.
The problem of stitched seams has always been a matter
of great consideration to the manufacturers in the Men's and Boys'
Clothing Industry, but today it is of greater importance than ever
before. As new fabrics are daily introduced into the Clothing In-
dustry and as these fabrics contain new fibers with new finishes,
the problem of proper seams becomes complex and complicated. The
old standards and methods that were of practical use when men's
and boys' clothing were made of only the standard wool fabrics
must necessarily now be reconsidered in view of the changing times;
and this Report endeavors to show how these new problems may be
met in the average clothing plant in view of new fabric finishes,
new synthetic fabrics, and new synthetic sewing threads.
THE NEW FABRIC FTNTSHES
One of the prime causes for this reconsideration of Seam
strength and durability, is the large variety of new fabric fin-
ishes which have increased in great numbers in recent years. It
can be truly said that in the past few years, the textile industry
has been revolutionized by the introduction of these new finishes.
We now have finishes to increase strength, to repel water, to re-
sist Wrinkling, shrinking, flame soiling and mildew. This trend
toward new finishes has been helped by extensive advertising cam-
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SOME ATTACHMENTS FOR OVERCOM ING NEED LE HEAT IN SEW ING
Fig. 10 — Needle Cooler body Fig. 11 – Needle Cooler nozzle
Fig. 12 — Needle lubricafor Fig. 13 — Thread lubricators
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