Die lip for strip coating
Assignee3M Innovative Properties Company
InventorsPentti K. Loukusa, Kurt W. Oster, Todd L. Peterson, Robert B. Secor, Rebecca A. Shipman, Merlin J. Steffen
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Abstract
The invention is a contact die for dispensing of flowable material on a substrate. The contact die includes at least one die block including a first internal passage. A die lip portion is disposed on the die block having a lateral dimension. A first plurality of orifices is disposed through the die lip portion proximate to each other and in communication with the internal passage to dispense flowable material as a single strip on the substrate. A first edge is disposed on one lateral side of the first plurality of orifices to direct the flowable material.
Claims4
A contact die-coated substrate comprising:
- a first planar side;
- at least three strips of a flowable material, wherein each strip consists essentially of compositionally the same flowable material and has a substantially constant cross-sectional profile and edges substantially perpendicular to the substrate disposed on the first planar side, wherein each strip of flowable material has less than a 5 percent variance across the cross-sectional profile;
- and
- wherein less than 65 percent of the substrate is covered by the at least three strips of the flowable material.
A coated substrate comprising:
- a substrate having a first planar side;
- at least three rectangular three dimensional strips of flowable material applied to the substrate on the first planar side, each strip having a substantially constant rectangular cross-sectional profile and edges substantially perpendicular to the substrate disposed on the first planar side, wherein each strip has less than a 5 percent variance across the rectangular cross-sectional profile;
- and
- wherein no more than 35 percent of the substrate is covered by the at least three strips.
Dependencies are inferred from the claim text.