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Questions & Answers

 

Co Name AxHAS THE WORLDS MOST TECHNOLOGICALLY ADVANCED ECO-FRIENDLY WELDABLE WEBBING TO MEET YOUR NEEDS

 

Now the webbing has delaminated, what can be done?

This is not a problem. With hot air, just reheat the polymer on the PVC fabric, taking care to not direct to much heat on the exposed polyester webbing and roll the webbing back into position. The bond strength will more than likely now be higher than it originally was. Provided the webbing and polymer are clean and dry, this can be done several times.

In a factory situation just re-weld the delamination, bearing in mind that it can take up to 10 minutes for a weld to cool, so if you weld two times in quick succession you may induce to much heat and get shrinkage. Either allow sufficient time between welds or reduce your settings.

 

I welded it to slowly and got excessive shrinkage?

Just rip it off the PVC fabric and re-weld it again following the instruction in the “Now the webbing has delaminated, what can be done” section above. Yes, you weld the side that now has no polymer on it to the polymer that is on the PVC fabric. Our polymer will reactivate with heat and re-bond to the polyester webbing and residual polymer left on the polyester webbing. If there was to much shrinkage in the first weld, it may be better to weld a new piece of WeldTECH™   onto the polymer that is on the PVC fabric because excessive shrinkage can have an affect on the certified load capacity of the WeldTECH™   webbing.

 

What if I weld some webbing in the wrong position?

This too can be fixed, all though it is quite time consuming and does require skill. The polymer used in WeldTECH™   melts at about 50ºC less than PVC. First delaminate the WeldTECH™   webbing from the PVC fabric. Then gently heat the remaining polymer on the PVC fabric with a heat gun and scrap it off.

 

Does WeldTECH™   weld to itself or other materials?

WeldTECH™   welds perfectly to itself. We have seen it welded with great results to plastisol netting. Of course it welds to PVC fabric, which is what it was designed for. With a slow weld it can achieve a weak weld to canvas and jute. The results for polyethylene and polypropylene are unsatisfactory. We would expect it to weld to a number of other natural and synthetic fabrics. Just give it a go, we would love to hear your findings.

 

I am getting to much shrinkage!

This will be because the total heat absorbed by the WeldTECH™   is to much. The total heat absorbed is a product of time and temperature. Either increase the traverse speed or decrease the hot air temperature. For RF welders, decrease the weld time or power used.

 

I rolled my PVC fabric up after welding WeldTECH™   and now it has a curl.

WeldTECH™   can take up to 10 minutes to cool properly. The more heat you put into Weldtech, the longer it takes to cool again. Ideally, you should be welding as fast as you can with the least heat possible to meet your objectives in the weld. If you still have a problem, you will have to leave the welded area laying flat until the WeldTECH™   has cooled sufficiently.

 

The WeldTECH™   webbing has stuck to itself.

This is most likely to much heat absorbed by the WeldTECH™   webbing. WeldTECH™   can take up to 10 minutes to cool properly. The more heat you put into Weldtech, the longer it takes to cool again. Ideally, you should be welding as fast as you can with the least heat possible to meet your objectives in the weld. If you still have a problem, you will have to leave the welded area laying flat until the WeldTECH™   has cooled sufficiently.

 

Why do you put a sticker “Weld this side for best bond

Both sides weld with a stronger bond than Plastisol coated webbing. The side marked with the sticker bonds with about a 30% stronger bond than the other side. When we talk about the bond strength, we are talking about the connection to the polyester woven webbing inside WeldTECH™  , as this is where all weldable webbing fails when it is delaminated. With a highly bonded weld, WeldTECH™   has been known to delaminate the PVC curtain, rather than itself.

 

 

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