Case Studies

Double E is a solutions provider. The company engineers and applies its products with over 40 years of industry experience behind it, generating thousands of success stories. Please find a few examples of how Double E has helped customers below.

Producer of Corrugated Cartons Increases Efficiency of Narrow Roll Applications

With more than 400 customers, often with very specific demands about their products,a manufacturer of corrugated cartons needed a solution for handling narrow rolls (less than 48-inches wide) of Kraft paper. Their roll stand could not move the arms close enough to pick up these narrow rolls. The customer had created an in-house modification to the roll stand. They created a pre-mounted DF-2000 adapter assembly - a piece of steel pipe with flanges at either end. This solution needed frequent repairs due to damage caused to the chuck when mounting and removing the adapter assembly. The weight and bulk of the adapter assembly made it difficult to handle, and the assembly was frequently dropped. There was also a very real risk of a workplace injury with this adapter. The customer approached Double E to engineer a solution.

Double E's solution to the customer's need to work with narrow rolls of Kraft paper more efficiently was a custom 4" DLB-2000 Core Shaft. Double E designed the shaft to fit between the arms of the roll stand. It is also designed with unique journals that work perfectly with the customer's existing 4" DF-2000 chucks.

The valve-side journal is attached to the shaft like a traditional Double E journal. Double E's proprietary fastening system with its close tolerance, deep insertion journals allow for quick and easy removal should the bladder need to be replaced. The non-valve side journal is a two-piece assembly to facilitate inserting the shaft into the core. A 5" outside diameter keyed journal insert can be removed for shaft insertion and extraction. The inside diameter of each journal is designed to fit seamlessly onto Double E's 4" DF-2000 chucks installed on the customer's unwind stands.