Union Tool Corporation

The Union Tool Corporation
P.O. Box 935 • Warsaw, IN 46581
Phone: (574) 267-3211 • Fax: (574) 267-5703

Shipping Address: 1144 N. Detroit St. • Warsaw, IN 46580

Union Tool FAQs.

Robust machines for long term operation.

Here are some frequently asked questions about Union Tool machines and services. If you have a question that you don't see here, ask it with our Contact Form.

Q: What roll configurations are available on Union Tool Roller Coaters?

A: There are eight different roll configurations available. Here's what they look like, as viewed from the side:

Model A Double Coater Roll Configuration

In the Model A Double Coater Roll Configuration, the liquid coating is held in the troughs between the coating rolls and their companion doctor rolls, top and bottom.

Model B Double Coater Roll Configuration

In the Model B Double Coater Roll Configuration, the liquid coating for the top surface is held in the trough between the top coating roller and its companion doctor roll; the liquid coating for the bottom surface is held in a pan in which the bottom coating roll and its companion doctor roll both run.

Model C Single Top Coater Roll Configuration

In the Model C Single Top Coater Roll Configuration, the liquid coating for the top surface is held in the trough between the top coating roller and its companion doctor roll; the bottom roller simply assists in feeding the substrate through the machine.

Model D Single Bottom Coater Roll Configuration

In the Model D Single Bottom Coater Roll Configuration, the liquid coating for the bottom surface is held in a pan in which the bottom coating roller and its companion doctor roll both run; the top roller simply assists in feeding the substrate through the machine.

Model A/D Configuration

The Model A/D configuration is actually two configurations in one. In the Model A/D, the top coating roll and its companion doctor roll move up and down as a unit; there is also a movable backup roll that moves out of the way when the top coater roll is in the lowered position (in "double coater" mode), and moves over to take the place of the top coater roll when it is in the raised position (in "single bottom coater" mode). Changing modes can be done "on the fly" with the flip of a switch.

Model A/D running as a double coater roll configuration

In the Model A/D running as a Double Coater Roll Configuration, the liquid coating for the bottom surface is held in the trough between the bottom coating roll and its companion doctor roll; the liquid coating for the top surface is held in the trough between the top coating roll and its companion doctor roll, which is in the lowered position. In this mode, the movable backup roll is moved away and does not participate in the coating operation.

In the Model A/D running as a Single Bottom Coater Roll Configuration, the top coating roll unit moves up out of the way and the movable backup roll slides in to take its position; the backup roll simply assists with moving the substrate through the machine. The liquid coating for the bottom surface is held in the trough between the bottom coating roll and its companion doctor roll.

In the Model C-rev Single Reverse Action Top Coater Roll Configuration, the liquid coating for the top surface is held in the trough between the top coating roll and its companion doctor roll. In this configuration, however, the top coating roll is rotating against the direction of substrate movement; this is the "reverse coating action" that results in a very smooth and even coating, which is especially desired in coating glass and similar substrates. The bottom roller simply drives the substrate through the machine.

Model C-Web Single Top Web Coater Roll Configuration

In the Model C-web Single Top Web Coater Roll Configuration, which is a special configuration for coating continuous-roll web material, the liquid coating for the top surface is held in the trough between the top coating roller and its companion doctor roll; on the bottom, two tensioning rolls — one behind the coating roll and the other ahead of the coating roll — apply upward pressure to keep the web material in proper contact with the coating roll. The tensioning rolls move up and down to allow for adjustment in the web material tension against the coating roll; they can also be lowered below the feed path to allow for the initial threading of the web material through the machine.

Q: Does Union Tool assist with the installation and in-plant setup of their systems and machines?

A: Yes. We offer complete on-site and in-plant start-up guidance to assist each customer with proper installation and operation of new Union Tool machines and systems. After installation and initial setup, our staff of field engineers is available to answer all your questions and solve any problems that may pop up.

Q: Is any on-site assembly required?

A: No. All new Union Tool machines are shipped and installed fully assembled. Our field engineers work with our customers to set up the equipment when it is delivered, and to integrate it into their existing production facilities.

Q: Do Union Tool machines have a warranty?

A: Yes. All new Union Tool machines carry a full one-year parts and labor warranty.

Q: Does Union Tool allow pre-sale testing?

A: Yes, indeed. For example, we invite all potential roller coater customers to submit both substrate and coating material samples to our Testing Laboratory so they can see the actual coating on their products. Our policy is simple: we're not satisfied until you are.