Archive for the ‘Uncategorized’ Category

Inside Cracking on Singleface

November 24, 2021

Fern asks:

I am curious if there is anything written regarding inside cracking on the singleface liner and how it doesn’t take away from the structural aspects of the box, or if there is an industry guideline that I can refer to.

Of course we do our best to eliminate it all together, but now we are working with more & more recycled liners (some heavily recycled) and shorter fibers, we continue to battle this.

You are not alone in this struggle.  And it’s becoming that time of year when this becomes common for many cold weather converters.

One thing we need to remember is that recycled paper gives up moisture much faster than papers made with virgin fibers. When relative humidity drops below 50% the normal board moisture content can plummet leading to a more brittle liner. And, the short fibers of recycled paper create a structure that is more brittle to begin with than long fibre virgin.

Many converters use and/or have experimented with different score profiles and for virgin and recycled paper. The more aggressive, or sharper the profile the more likely to crack the liner. While 4pt crease may be typical, 6 or 8 point can be used to distribute the pressure across the surface.

AICC published a White Paper on Score Cracking a few years back. Click here to download the White Paper. The White paper is free to AICC Members.

We have visited this topic many times in Ask Ralph. Type “Cracking Scores” or “Cracking liners” in the “Search Ask Ralph” field on this blog.

— Ralph

EPA PBT Compliance Request

November 24, 2021

We recently received a request from a customer to sign a form/letter stating that we were compliant with the new EPA regulations on PBT’s in the boxes we manufacture for them. Have you heard of any other box maker that have been asked to sign such documents?

They also reference compliance to RoHS requirements.

Regarding the PBT compliance, probably the best and most efficient thing to do is contact your suppliers and request a reply, in writing, to the questions your customer has asked, and/or a COA (Certificate of Compliance) for both the EPA and RoHS regulations. You may be able to collect this information from their Safety Data Sheets, but make for you have the latest official documents from them, and if possible, make sure they are original documents and not photocopies.

The chemicals referenced in the January 2021 EPS issued rule include Decabromodiphenyl ether (DecaBDE), Phenol, isopropylated phosphate (3:1) – (PIP 3:1), 2,4,6-Tris(tert-butyl)phenol (2,4,6-TTBP), Hexachlorobutadiene (HCBD), and Pentachlorothiophenol (PTCP).

Typically we don’t think you’re going to find the chemicals in the EPA description in the paperboard, inks, or starch adhesives used to make standard corrugated packaging. We don’t know the exact extent of the information your customer is asking for, but if you are shipping product to your customer on plastic pallets, with plastic strapping, or plastic wrapping, you may want to request information from your suppliers of those products as well.

We have had a few discussions on RoHS compliance previously in this blog. In the sidebar under “Search Ask Ralph” type RoHS and hit enter to find these articles.

Do any of our readers and followers have any information or experiences to share on this topic?

— Ralph

That Still Small Voice

August 28, 2014

For those of us who know the story, we recall that something significant was not ushered in with a strong rushing wind or an earthquake, but in a small quiet calling. So it is with many signs of change that are not so evident unless we are sensitized to the calling. While many of us may not need to respond to global packaging initiatives because the end user does not ship all over the world; or we are not ultimately faced with declining fibre quality like the Europeans; or we may not manufacture UN Hazmat boxes; or we have a corrugator or sheet feeder that quantifies its board via certificates of analysis the physical properties of the corrugated it send us still, we are faced with change.

If you have built trust in customer relationships, go further! Bring differentiation and branding to the relationship. What separates you and your company from others? Be faster to respond, yes. Discuss the process controls you have in place that provides product assurance, yes. If you are not selling and delivering a perceived significant value, then the relationship defaults to price and the balance of power falls into the hands of the customer/buyer. Look at the progress of digital printing technology and the recent claims of printing at 8,000 sheets per hour. What a technology leap!

Become the specialist, the corrugated engineering expert. One success builds on another. Do not become diluted, keep that focus narrow. Always be testing competitor’s boxes, but not for basis weights or calipers, that’s not of any value. Consider third party evaluations. Learn the newest terminology and new methods of measuring board performance and multiple your value in the eyes of the packager. Create pathways of significance so that your customer cannot take your investment in them to a competitor.

Champion the changes that are coming, it’s not the unknown to your Association. Prepare yourselves and don’t be deceive by those who are not embracing better ways of design the corrugated structure and reducing variation in their processes. You can’t control what’s coming, but you can reduce the pain of not knowing. There are already pockets of excellence out there, the early innovators, and companies in the mid Atlantic, Texas, the Rocky Mountains, the upper Midwest, the Southwest and Los Angeles area.

To read the entire article follow this link:

AICC Region 11/12 Business Meeting

September 8, 2011

I hope to see you at the next AICC Region 11/12 AGM & General Meeting in Mississauga on Friday October 7th 2011. I’ll be presenting on the Current State of Containerboard and Converting. George Morretti will also be on hand to present how to “Prepare your Sales Efforts and Business to Survive and Thrive” in the transforming Canadian market.

Click here for details and registration form.