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Subject:	Re: Dispensing glue from a barrel
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Message Thread:

Dispensing glue from a barrel

4/29/19

Bill

For years we dispensed blue from a barrel by putting an elbow in the bung with a length of PVC pipe and rotating it down to let the glue flow. Then we would tip it back up and plug it. We changed glue vendors and the new glue seems to clump up towards the end of the barrel. We think it is drying and leaving a skin.

We recently tried a knife valve so we know we are getting a seal. We still have clumps and the valves sticks and does not seal well. Does anyone know a better way?

4/29/19 #2: Dispensing glue from a barrel ...

Mark B

Member

My guess is the make up air thats coming into the barrel as you pour off over time is enough to create a large thick layer on the top just as if you were to leave that surface area of glue out on the bench. Would seem other than to use the glue faster, buy in smaller containers, you'd just have to deal with it, stir, mix, or perhaps invest in a small cylinder of Argon and periodically remove the small bung at the top of the barrel and feed a bunch of Argon into the drum to displace the air thats in contact with the glue.

Have a MIG welding setup in the shop and I will top off partial gallons/quarts of paints/finish, bottles of polyurethane glue that are going to sit for a while, of the mig tank and it works fine. My cylinder is a 75/25 Argon/CO2 mix and Id imagine straight argon would be best but I think Argon or some other inert is all thats in products like Bloxygen. Around here the small cylinders can be purchased outright (no lease) for around $100 bucks. Small regulator, and you could give it a try.

4/29/19 #3: Dispensing glue from a barrel ...

Bill

We have used glue in barrels for years and never had this problem even when we went through glue much more slowly. National Casein went out of business and forced us to change vendors.

Is there a better valve scenario?

4/29/19 #4: Dispensing glue from a barrel ...

Mark B

Member

The knife style is the only other style Ive seen for viscous materials. I wonder when the glue companies will come to their senses and start selling bulk quantities of glue in large totes like box wine where the material is contained in a sealed bag that collapses as its used and the contents never see a molecule of air.

4/29/19 #5: Dispensing glue from a barrel ...

Bill

I agree.

4/30/19 #6: Dispensing glue from a barrel ...

Kirk

Buy a 35 dollar barrel pump from Harbor Freight.They work great for about a year or so. Then you throw it away and buy another one.

4/30/19 #7: Dispensing glue from a barrel ...

Mark Elliott

Member

Mark B,

I agree as well with having the glue come in the sealed bag the way box wine comes. It just doesn't cost that much money and it sure does seem that that would give an adhesive suppler an advantage in the market place.

I made this post to try to build support for this idea just in case a supplier comes across this thread.

Mark

5/1/19 #8: Dispensing glue from a barrel ...

Chris H.

Website: https://www.csaw.com/lamello/

Bill, It does seem strange that you're having this problem now, but never with your other supplier.... I would have to say that it's got something to do with the chemical make-up of the new glue. You could check with Jeff or Eric at CP Adhesives - those guys know a LOT about glue and offer all kinds (even custom adhesives):

https://www.cpadhesives.com/

And Mark E., CP may already have your glue bladder idea in production, or if not, may be interested to hear about it.

One other option to consider is the LK glue systems from Lamello, designed for water-based glues. They're self-contained, pressurized, stainless steel tanks where the glue is always under pressure, right up to the pistol. I've had glue in my system for 3 months (with no use) in between trade shows, and the glue has been just fine. Lots of other advantages too, but that's the one the addresses your concern.

Lamello Glue Systems

5/1/19 #9: Dispensing glue from a barrel ...

Mark Elliott

Member

Chris,

I already have 2 of them and they work great. It's the bulk glue we're talking about before it goes into the dispenser.

I address the problem by purchasing my glue in 1 gallon jugs and fill the tanks from those.

Mark

5/2/19 #10: Dispensing glue from a barrel ...

Bill

Chris we have several Jolly Colla's which is a similar glue dispensing system. We go through a lot of glue and a devise like that is not appropriate for many operations.

We considered breaking down 50 gallons into smaller containers but I am not sure that is the right answer over time.

I suggested the wine box thing to the vendor and he said he would look into it. I don't have high hopes.

5/2/19 #11: Dispensing glue from a barrel ...

Jeff Pitcher

Website: http://www.cpadhesives.com

Some years back we were very excited about a tote packaging system that was essentially what you described, a corrugated shell with a bag liner. They came unassembled and we less costly than bottle in cage totes. After two or three spills however, we decided they simply couldn't provide the necessary stability for the weight of the glue. We've also toyed with the wine box type dispenser. Ultimately, it's more expensive and very problematic to fill. Still something I'd like to pursue but haven't found a cost effective alternative to the old gallon jug. There are pumping systems available that will allow you to keep a drum upright and pump on demand. Let me know if you'd like more information.

5/2/19 #12: Dispensing glue from a barrel ...

Chris H.

Hi Mark,
Didn't realize that was you until now! Good to see you at the Charlotte show and glad to hear the LKs are working well for you!
Best,

9/28/20 #14: Dispensing glue from a barrel ...

Eric Burke

Member

Website: http://cpadhesives.com

Coming to this thread a little late...

We do have 275 gallon totes with the bag in (plastic) box type system you mentioned. We do not currently have this for 55 gallon drums, though. Sorry.

Another thought is that the company drierite has a desiccant cartridge system for drum bungs that would at least help keep the air coming in dry (link included). It is more commonly used for reactive adhesives like polyurethanes, though.

You mentioned having to switch to another vendor. Is it possible that the shelf life on the replacement product is shorter than your prior adhesive?

Conversely, there are usually unfilled/filtered versions of the adhesive you use that are designed to be less likely to clump or clog up. They tend to be a little more expensive, but you may want to check if there is an alternative version of the adhesive you are using from your supplier.

Another option that is much more expensive than the harbor freight pump is the ez drum dock pump system that you would still be able to use to fill your Lamello LK tanks you have. The main trick to it is that the small bung remains closed and the special fittings for the large bung are self venting as needed and this works to help keep the adhesive more protected over time.

Just a few thoughts from the glue guys at CP/ Spectrum. Thanks

Drierite

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