Quality VAKuum Products, Inc. Logo with link to homepage

Quality VAKuum Products Inc.

Call Anytime 800 547-5484

Home   Videos    Contact    Gallery    Instructions    About Q.V.P.

decorative spacer line

Vacuum Pumps

Vacuum Presses

Veneering Accessories

Completely pneumatic vacuum press for veneering and laminating

Electric vacuum pumps for veenering and laminating

Polyurethane and vinyl bags for veneering and laminating

Flip top frame presses for veneering and laminating

The recomended glue in the industry for veneering

Hand held glue spreaders to spread glue on your veneers or laminates

Air-Powered Electric Bags Frame Presses Glue Spreaders

link to follow us on facebook link to our youtube channel
link to follow us on pinterest  link to follow us on linkedin
check out our blog link to follow us on google plus
click here for our rss feed
spacer line

Finding a leak in your vacuum veneer bag -

And also how to repair it.

spacer line

Techniques #7

Video that accompanies this article can be found here

Finding a Leak in your Vacuum veneer Bag:

A vacuum veneer bag will develop leaks after it has been used and the leaks normally come from three areas.  The bag connector, the C Channel Closure and of course the surface of the bag. 

The easiest way to check the C Channel is to put water in the lip while the bag is under vacuum.  If it leaks, it normally leaks at the outer edges and you will see water running along the inside seam of the bag.  The outer C clip can fatigue with time and to stop the leak, apply a spring clamp over the C at the end.  The additional pressure from the spring clamp will normally stop the leak.

For the other leaks, line the inside of the bag with newspaper.  Seal it and apply vacuum.  Turn the bag upside down to check the bag connector.  Sponge plenty of water around the connector and the hose.  If it’s leaking here, you will see water either running up the hose or it will stain the newspaper.

Leaks in the body of the bag can be caused by a sharp point or edge or by over stretching the bag.  This cause’s small pin hole leaks which are difficult to detect.  With the veneer bag under vacuum, sponge large amounts of water on the surface until you see the paper stain.  Do both the top and bottom side.

Repair with a patch kit from Q.V.P.  You can also use a vinyl pool repair kit in a pinch.  Vinyl glue will stick to the poly veneer bags as well as the vinyl material.  Clean both surfaces with PVC pipe cleaner, apply PVC pipe or vinyl glue and let it tack up for about 5 minutes.  Press them together and clamp overnight.  The patch should go on the outside of the bag.   Make sure you put wax paper inside the bag under the patch.  You don’t want to glue the top and bottom together.

For a quick and temporary patch, you can us the plastic tape.  Put a piece of tape inside and on the outside of the bag.




Checking the c channel closure for leaks

Checking the vacuum connector for leak.

Using a wet spounge to check the vacuum bag for leaks

A found leak in the vacuum bag

Applying a patch on your vacuum bag