3m Innovative Properties Company

Minnesota Mining and Manufacturing Company

Imation Corporation

Timothy J Edman

Robert A Yapel

William Keith Leonard

Aparna V Bhave

Chris J Tanley

Stephen W Mohn

Bernard A Scheller

Bruce E Tait

Thomas J Ludemann

Carsten Franke

Kevin B Newhouse

Gary W Maier

Lawrence B Wallace

Terence A Lee

Jerry L Warren

Kyle Taggart

Stanley T Mann

Ronald L Holmes

Philip D Schiller

Mark T Reed

Phillip D Schiller

Michael L Smith

David S Grinnell

The disclosure generally relates to a looped pile film roll core used for winding a polymeric film, a method of winding film on the looped pile film roll core, and a roll of film that includes the looped pile film roll core. The disclosure describes an article and a process to reduce the core impressions created by the starting end of a web on the adjacent web layers next to the core. In one particular embodiment, the present disclosure can lead to a reduction in the amount and severity of such core impressions on a wound polymeric film, by reducing the amount of stress in adjacent layers of wound web.

Looped pile film roll core

A coating apparatus and method of use wherein at least one capillary tube is in contact with a moving substrate during coating.

Contact coating by use of a manifold provided with capillary tubes

A method and apparatus for continuously coating moving web and splices with a coating fluid. The system includes a slide coating die having a slide surface with at least one feed slot for extruding the coating fluid onto the moving web. The slide coating die defines a coating gap with the moving web. The coating gap is adjustable between a coating position and a splice coating position. A web guide is positioned to guide the moving web in a first direction past the slide coating die such that a coating bead of the coating fluid can be formed in the coating gap. A vacuum system is positioned to generate a reduced pressure condition along a lower surface of the slide coating die. The vacuum system defines a vacuum gap with the moving web. The vacuum gap is adjustable independent of the coating gap between a coating position and a splice coating position. A detector signals an increase in web thickness. A controller is functionally connected to the detector. The controller adjusts the coating gap and the vacuum gap to the splice coating position in response to an increase in web thickness in excess of a predetermined magnitude while maintaining a stable coating bead.

Web coating method and apparatus for continuous coating over splices

A method of preparing a surface on a die coater to improve the uniformity of the coating layer on the substrate. A surface of the die block is machined. The die block is then positioned on a measuring surface in a free state so that the machined surface being measured is substantially vertical. The vertical orientation of the die block substantially removes the effect of gravity on any residual stress during measuring. The steps of machining, positioning, and measuring the die block are repeated until the desired total indicated run-out is achieved. The positioning step may also include interposing at least two point supports between the die block and the measuring surface. In another embodiment, the die blocks are positioned in a reference state or a production state for measuring.

Method of fabricating die coater parts

A method for use with a slide coater including preparing a first coating fluid and flowing the first coating fluid down at least a first slide surface of a slide coater when coating of the first coating fluid onto the substrate is desired and flowing a minimizing fluid down the at least first slide surface when coating of the first coating fluid onto the substrate is not desired. The minimizing fluid has a composition which minimizes drying of the first coating fluid on the at least first slide surface. This invention applies to imaging, data storage, and other media.

Apparatus and method for minimizing the drying of a coating fluid on a

An easily controllable method to adjust the die slot exit gap to produce an accurately controlled flow from the slot exit across the width of a die provides movable back seats at the back of the die that cause the front and back portions of the die plates to move simultaneously to produce a change in the die slot exit gap. At least one actuator is located between the front and back seats of the die to increase or reduce its length to bend the first plate around the front seat thereby to increase or decrease the first exit gap.

Coating die with slot thickness control

An easily controllable method to adjust a die slot exit gap to produce an accurately controlled flow from the slot exit across the width of a die provides movable back seats at the back of the die that cause front and back portions of die plates to move simultaneously to produce a change in the die slot exit gap. At least one actuator is located between the front and back seats of the die to increase or reduce the actuator length to bend the first plate around the front seat thereby to increase or decrease the first exit gap.

Method of thickness control for dies

Growing community of inventors

Stillwater, MN, United States of America

Timothy J Edman