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Method and apparatus for producing a non-uniform coating on a substrate

A coating device and coating technology, which is applied to the device for coating liquid on the surface, coating, textile and papermaking, etc.

Inactive Publication Date: 2012-09-12
3M INNOVATIVE PROPERTIES CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This means that the strip coating application method is suitable for saving coating costs and expenses

Method used

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  • Method and apparatus for producing a non-uniform coating on a substrate
  • Method and apparatus for producing a non-uniform coating on a substrate
  • Method and apparatus for producing a non-uniform coating on a substrate

Examples

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[0030] Objects and advantages of the present invention are further illustrated by the following non-limiting examples. The particular materials and amounts thereof, as well as other conditions and details, recited in these examples should not be construed to unduly limit this invention. All parts, percentages, ratios, etc. in the examples, as well as in the remainder of the specification, are by weight unless otherwise indicated.

[0031] in with figure 1 Basecoating was performed on a similar five-roll coater to illustrate the image 3 A one-step roll coating process for producing a coated substrate with a non-uniform low adhesion backside (LAB) coating on the second major surface of a paper substrate is shown. Coat grape-colored paper substrates with a non-uniform LAB coating since bands of this coating material are often visible on darker colored papers. An adhesive coat weight of 0.75 grams per square foot (gsf) was applied to the first major surface of the paper in a s...

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Abstract

A roll coater can be modified by the addition of one or more needle tubes that supply coating fluid to the roll coater in discrete locations across the face of the coating roll. The needle tubes supply a localized band of coating material onto the coating roll superimposed over the uniform coating layer already present on the surface of the coating roll from an upstream coating pond creating a stripe pattern over the uniform coating layer. By varying the relative speeds of the coating rolls in the coater, the width of the stripe can also be adjusted.

Description

Background technique [0001] Roll coaters are commonly used to coat substrates with a wide variety of coatings. Roll coaters can apply a very uniform overall coating by using a solid coater roll, or a discrete stripe by using a grooved coater roll. Contents of the invention [0002] The inventors have determined that for some applications it is desirable to have an overall uniform coating on the substrate and to add a non-uniform coating, such as stripes, on top of the uniform coating. Such coating forms may be useful for applying a water-based, low-adhesion, adhesive-backed coating during the production of adhesively attached, repositionable writing notes. Since a single repositionable note only has an adhesive portion on the top of the note, a non-stick or low cling coating is only required in this discrete area. This means that the strip coating application method is suitable for saving coating costs and expenses. [0003] However, the cling coating resides on the writi...

Claims

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Application Information

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IPC IPC(8): B05C1/10B05C1/14
CPCB05C1/0813B05C1/0834B05C1/165B05C9/06B05D1/28B05D7/5385B05D2252/02C09J7/403D21H23/58B05C1/10B05C1/14B05C1/00B05D5/00
Inventor 加里·W·梅尔
Owner 3M INNOVATIVE PROPERTIES CO
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