Types Of Tape Splices - IBM 1620 1 Manual

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Figure 71. Paper Tape Specifications
upon the quality of the splice desired, life expectancy
of the splice, time allotted to make the splice, and a
price justiRcation. The best splicing results will be ob-
tained by
Rrst
analyzing paper' tape splicing needs and
then purchasing the tape splicer and splicing materials
best suited to these needs.
Whatever the splicing method used, the finished
splice should satisfy the following conditions:
( a ) Total thickness of the spliced tape area
must be less than 0.010 inch.
( b ) The splice must be approximately as
strong as
IBM
paper tape.
( c) The splice width must match the width
of the tape itself.
( d ) The splice must be flexible.
( e ) The splice must not create a gum or
hindrance in the tape feed area.
Types
of Tape
Splices
There are two types of splices: overlap splice and
butt-joint splice.
Overlap Splice
The overlap splice consists of two matching paper
tape ends overlapped by at least one tape column
and held together with an adhesive.
With some splicing equipment, the pieces are weld-
ed together through a process of heat, pressure, and
a liquid bonding agent. With this type of equipment,
alignment accuracy of the tape is not required of the
splice equipment operator, and the tape splicing rate
is approximately one per minute .
With other overlap-type splice equipment, the tapes
are glued together with a quick drying adhesive. In
this process, some alignment accuracy of the tapes is
required of the splice equipment operator. Tape splic-
ing rate is about three to
Rve
minutes per splice.
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ADVANTAGES OF OVERLAP SPLICING
l. A large variety of overlap splicing equipment
is commercially available.
2. Many splicers are available at a low invest-
ment cost.
3. Quality of splice is not usually dependent upon
the operator's skill.
DISADVANTAGES OF OVERLAP SPLICING
l.
An overlap-type of splice is not suitable within
the tape data area because overlapped col-
umns will result in lost data, parity errors,
and/or invalid codes.
2. Low production on some splicing equipment,
due to the lengthy time required for the glue
to dry.
3. Short life of splice.
87