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Method and apparatus for producing non-uniform coatings on substrates

A coating device, coating technology, applied in the direction of surface coating device, coating, textile and paper making, etc.

Inactive Publication Date: 2016-03-30
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 non-uniform coatings on substrates
  • Method and apparatus for producing non-uniform coatings on substrates
  • Method and apparatus for producing non-uniform coatings on substrates

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

Roll coaters may be modified by adding one or more needles that provide coating liquid to the roll coater at discrete locations across the surface of the coating roll. The needles provide strips of partial coating material from an upstream coating pool onto the uniform coating already present on the surface of the applicator roll, forming a striped pattern on the uniform coating. By changing the relative speed of the applicator rolls, the width of the strip 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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Patent Type & Authority Patents(China)
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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