A Southeastern Custom Molder focused on consumer goods has doubled its business in the past 5 years, but scrap issues on their multi-cavity hot runners were holding them back from continuing that growth. They tried purging compounds from 4 different companies but were unable to improve changeover time on their 20+ weekly color changes. In order to continue their growth, they needed to figure a way to make their hot runner color changes
easier, and more efficient. Also, they wanted an easy-to-use product for their new hires.
The Challenge: Reduce Scrap-Rate on Their Multi-Cavity Hot Runners for 20+ Weekly Color Changes
This molding shop was seeing exponential growth, but despite using a Purge Program throughout their business, they had yet to find an answer for lengthy changeover times and scrap-rates on hot runner color changeovers. As Plant Manager Ray D. explains, “We run twenty-something different colors with pearls, tallow blue colors, I mean, nasty colors that are tough to move and get out of a barrel, and then you're pushing it all through a hot runner.
That’s our biggest pain point.”
Additionally, Ray needed to find a product that was easy to use for his growing production team. “We needed something easy-to-use that didn’t disrupt production. We’re running polypro and stay at the same processing temps. On-the-fly color changes are crucial to keeping up with our customer demand.” Ray’s team had tried products from four major players in the purging industry but wasn’t seeing the results they wanted. “We tried everything. I remember we had some mechanical grades, 2 chemical grades that just popped and made noise, and a concentrate from a small vendor, but nothing made much of a difference. We really struggled with cleaning out the gates in our molds. What we were doing just wasn’t going to help us get to the next level.”
Solution- Asaclean’s PLUS Grade
After exhausting his other options, Ray heard about a new Purging Concentrate called Asaclean PLUS Grade that was designed specifically for challenging applications including but not limited to multi-cavity hot runners, extrusion, & extrusion blow molding.
Ray was already using another Grade of Asaclean for his plant’s overall Preventative Purge Program, so he was eager to see how it performed. “I told my rep that our biggest problem is our hot runners and that’s where we need the most help. That’s why I was excited when he told me about the PLUS Grade.” He continued, “for some things like cleaning screws and barrels, most of the good purging compounds do the job. It’s not hard. Cleaning molds, that’s hard. I told my Asaclean rep, ‘that would be our Holy Grail—a purge that solves hot runner color changeovers.’”
For Ray, this was a very time-sensitive issue, so he decided to immediately set up a trial to see how PLUS performed against his other options. Within 48 hours, his rep arrived on-site to help him get started. During the visit, Ray’s Purging Expert explained how to get the most out of the concentrate grade, helped complete a full production trial, and trained Ray’s full production team on best practices. The results speak for themselves.
Within 2 weeks of implementing PLUS Grade for hot runner color changeovers, the scrap-rate was reduced from 5% to just 1.8%. Ray’s team is running more good parts in less time. “Our color changes are all done in 15 minutes or less, so we don’t have time wasted.” Ray was very impressed with what he saw. “Compared to some of the other products, this cleans faster and a lot better.”
“The other thing that’s very nice is I don't have to mess with matching MFRs or Temps. I've got my production material, and I can just use my material. I don't handle anything extra, I don't have to change a thing.”
“This stuff was pretty shocking to me because, one, it was just so easy and we never had to do anything. It's just like putting our masterbatch in, click a button, throw some dosage in there, and go. And two, it cleans incredibly well. So, we just looked at each other like, ‘that’s pretty cool!’ Now that we have the PLUS in the blenders, it can't get any easier than that. Because our blenders are mounted on top of our feed throats. We’ve been using PLUS for several weeks now, and we see that a little PLUS goes a very long way. I’ve been trying different products to help with hot runner changeovers for years, but it’s tough worrying about tiny gates and having a resin stiff enough to push out the purge. After trying it ourselves, for hot runner color changes, PLUS Grade is the Holy Grail.”
Interested in Trying Asaclean PLUS Grade?
Asaclean PLUS Grade is designed to thrive in some of the most difficult processing situations. If you’d like to request a free on-site trial and processor training session like Ray’s team, request a free 10 minute purging consultation here, and schedule your trial of Asaclean™ PLUS Grade today.