Difference Between Glue-Lined & Non-Glue Heat Shrink Tubing: Adhesive Layer, Stores & Uses

Question

Hello,

I'm interested in what is the difference between heat-shrinkable sleeves with and without glue? Do they contain any adhesive layer inside, which sticks to the cable when heated? Can you buy one at most electronics stores?

Thank you for the reply.

zdzisiek1979 · Accepted Answer

Thermo-shrinkage with glue is a tube from the inside with a hot-melt adhesive which additionally fills the space between the pipe jacket and the cable.
You will sooner buy in an electrical store & wholesaler because it is used primarily in cable joints. Sealing with such a pipe is hermetic (waterproof). There is no capillary effect. It usually just shrinks on the line, but it is not tight. It's good to make connections in the car.

And they are much more expensive than ordinary ones.

zdzisiek1979 · Accepted Answer

The glue tube will be rather thicker and stiffer. Additionally, there will be a slight glue discharge at the ends.

It's worth testing. Only if the glue grips well, it degreases and wipes the insulation surface. If you developed a procedure for yourself, it might be a good effect.
I did not use thin ones.

This is normal.

KaW · Accepted Answer

Heat shrinkable tubing is used to protect fixed connections. After the shrinkage process, they are not flexible - they have no characteristics elasticity.

Jawi_P · Accepted Answer

But heat shrink tubing is also different. The ones with glue are stiffer precisely because of the glue.
Thin wall tubing is generally to be found and there are flexible versions. Tubes also have a different shrink ratio, the smaller it is (probably 2: 1), the smallest I've ever seen, the more flexible the tube.
You would have to try different manufacturers. TME has several manufacturers and clearly states the type of tube, so maybe buy a few different?
Maybe cable manufacturers have already found such a supplier

^ToM^ · Accepted Answer

I noticed, for example in notebook power supplies, that most often the cable breaks at the end of the edge, right behind the bend. Bends are simply too short so they only partially fulfill their purpose. If the bend was 10 cm instead of 3 cm, the cables would not break, because the bend would correctly bend the cable by 180 degrees. However, if the bend is a few cm, the cable tilts only 90 degrees (or less) and breaks at its edge. Pzdr!

Argennto_1 · Answer

Thanks,

One more question. I often make audio and power cables and use heat shrink tubes as shown in the picture. Unfortunately, where some time after bending the cable, marked with arrows, gaps appear [the heat-shrinkable sleeve does not adhere perfectly to the cable, there are minimal gaps]. It doesn't bother me that much, but it looks unsightly. Is it normal? Are "thermowells" with glue used in such cases? Do I have any bad ones.

Thanks for your help and best regards

Argennto_1 · Answer

I know the fact that the resilience drops, but it seems to me that not much. It can be seen on a massive scale that manufacturers, self-respecting companies, use heat shrink sleeves on plugs and wires. Some examples below. My only question is whether it is normal that the heat-shrinkable tubing does not adhere perfectly to the cable after bending the cable several times.

KaW · Answer

Normal. Normal. I'm writing more because one word won't come in .....

Ronin64 · Answer

But in these photos these are audiophile cables, it seems. There is more magic in such than physics.

Anonymous · Answer

Buddy, self-respecting companies use 'strain reliefs' as follows: There is no joyful creativity from T-shirts, only a molded plug in rubber or other elastomer that allows the cable to be bent along a gentle radius of ~ 10-15mm by 180 ° practically no stress on the sockets and soldering points in the plug.

Anonymous · Answer

So what if the stresses are smaller as the cable breaks faster at this bend

Anonymous · Answer

So the task of the strain relief on a conduit is to break the conduits faster ... Interesting theory ...

Anonymous · Answer

That's right, most of the strain reliefs in disposable products are made of stiff (cheap) plastic linden, which doesn't do the job, but only gives a visual illusion. The ones shown in the photo are in the minority.

Apple brand cables for phone chargers, computers - instead of a rubber bend, there is a tube in their super minimalist style - similar to the use of a heat-shrinkable shirt and it breaks into power. I have made various cables for portable audio equipment and sleeves behind the plug many times - it always ended up breaking the wire.

What is different for stationary applications.

Argennto_1 · Answer

I have had a BlitzWolf USB cable for a year. A solution similar to Apple, only the piece of plastic behind the plug is quite hard and thicker. The cable is used quite intensively several times a day. It has been operating for a year until today I think it's the quality of the materials used. The cable is not very flexible.

Jawi_P · Answer

In what sense to Apple? Is the tip magnetic? As for the strain reliefs, there are cables with long strain reliefs, but they are so stiff on a large length that the device cannot be brought to the wall as the socket is at the back.

Difference Between Glue-Lined & Non-Glue Heat Shrink Tubing: Adhesive Layer, Stores & Uses

Post #1

Post #2

Post #3

Post #4

Post #5

Post #6

Post #7

Post #8

Post #9

Post #10

Post #11

Post #12

Post #13

Post #14

Post #15

Post #16

Topic summary