ASTM D3521 Standard Test Method for Surface Wax Coating On Corrugated Board
1. Scope
1.1 This test method covers determination of the weight of wax that is present as a coating on the surface of corrugated board. This method is applicable to board to which wax has been applied by curtain coating, roll coating, or other methods; the substrate board may or may not contain impregnating (saturating) wax within its structure.
NOTE 1 - If it is known that the specimen has coating wax only, with no internal saturating wax, the total coating wax applied may be determined by Test Method D3344.
1.2 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
2. Referenced Documents
2.1 ASTM Standards:
D585 Practice for Sampling and Accepting a Single Lot of Paper, Paperboard, Fiberboard, or Related Product
D3344 Test Method for Total Wax Content of Corrugated Paperboard
3. Terminology
3.1 Definition:
3.1.1 weight of wax coating - the weight of wax present as a surface film on corrugated paperboard, expressed as weight per unit area, usually grams per square metre or pounds of coating per thousand feet of board covered.
3.1.1.1 Discussion - This definition excludes any portion of wax that is located below the surface, that may have been permitted to soak into the fibrous paperboard structure.
