Bürklin Elektronik Quarterly # 02/2022 Englisch

HELLERMANNTYTON
HEAT SHRINK TUBING:
WITH EXPERTISE THROUGH
THICK AND THIN
From coloured and transparent heat shrink with or without adhesive to heat shrinkable moulded parts:
HellermannTyton, the cable management specialist, offers a comprehensive range of heat shrink products
in a variety of styles and sizes that meet the highest standards.
Heat shrink tubing is used when assembling cable sets.
For example, to insulate the wires or cables, to provide
additional mechanical protection or to mark them. There
are five basic parameters that are decisive for the success
of a heat shrink application:
1. THE WALL THICKNESS
In general, a distinction is made between thin-, medium-
and thick-walled shrink tubing. The variants with an
inner layer of adhesive are often referred to as doublewalled.
The material thickness should be stated in mm
after complete shrinkage.
„Nominal“ means dimensions without any tolerances.
2. THE DIAMETER
For thin-walled heat shrink tubing, the diameter is
usually given in inches; 25.4 mm equals 1 inch.
3. THE RATE OF SHRINKAGE
The shrink ratio indicates how much the product
shrinks, i.e. the supplied expanded diameter in relation
to the diameter after shrinking. The shrink ratio varies
from 2:1 to 6:1. The higher the ratio, the greater the range
of applications that the tubing can cover. As a result,
fewer shrink tubing sizes are usually needed.
4. THE LENGTH CHANGE
Heat shrinkable tubing not only shrinks in diameter,
but also in length. The so-called longitudinal shrinkage
is given as a percentage.
5. THE RIGHT SIZE
Select the tubing size so that a minimum shrinkage of
20 % and a maximum of 80 % is possible.
MEDIUM WALL MA47 HEAT SHRINK TUBING
with inner adhesive offers reliable protection against
moisture and other environmental influences. With a
generous shrinkage rate of up to 4:1, it is particularly
suitable for low voltage applications above and below
the ground. MA47 is available in 11 sizes from 8 mm to
140 mm, supplied in 1 m lengths.
THIN-WALLED HIS HEAT SHRINK TUBING
is designed for everyday use. The HIS range is available
with or without an inner layer of adhesive. It is available
in various colours and with shrink ratios of 2:1 and 3:1.
The handy dispenser boxes with small reels are particularly
useful for electrical repairs.
DOES THE TUBING FIT?
Not sure if a ece of heat shrinkable tubing will fit your
application? Simply enter the required dimensions into
the HellermannTyton online heat shrink calculator.
It will then suggest the right size for you.
HOW THICK DOES THE WALL REMAIN?
When at shrink tubing is processed, both the diameter
and the wall thickness change. This online wall thickness
calculator helps you to determine the theoretical
wall thickness for a specific diameter.
18 Bürklin Quarterly
www.buerklin.com
19