Testing Standard:
TAPPI T412 Moisture in Pulp, Paper, and Paperboard ie. TAPPI T412 Moisture Content of Paper
Standard Number
TAPPI T412
Standard Title
Moisture in Pulp, Paper, and Paperboard, Test Method
Overview for TAPPI T412 Moisture Content of Paper:
TAPPI T412 Test Method is influenced by several factors including environmental conditions which will affect many of its physical properties. This includes the manufacturing process, printability of the final product, shrinkage, dimensional stability, strength, and paper runnability.
TAPPI T412 is a test method used to determine the moisture content of paper and paperboard. The moisture content is the amount of water present in the paper or paperboard expressed as a percentage of the dry weight of the material.
The method involves weighing a sample of the paper or paperboard, then drying it at a specific temperature for a specified period of time until the weight no longer changes, indicating that all the moisture has been evaporated. The weight of the dried sample is then compared to the initial weight, and the difference is used to calculate the moisture content.
TAPPI T412 specifies the conditions for drying, including the temperature, duration, and method of heating. The standard also provides guidance on sampling and the preparation of test specimens.
This test method is commonly used in the paper industry to ensure that the paper or paperboard meets the required moisture content for its intended use, such as printing or packaging. It can also be used to monitor the performance of drying equipment and to compare different types of paper or paperboard.
Purple Diamond Testing offers TAPPI T412 Moisture in Pulp, Paper, and Paperboard as part of our packaging compliance and validation services.
Rationale for TAPPI T412 Moisture Content of Paper:
TAPPI T412 – Moisture in Pulp, Paper, and Paperboard. The moisture content of pulp and paper is critical during the manufacturing, printing, and end use phases. Routine monitoring is suggested to avoid possible issues. Finding issues early, cuts possible issues such as compression failure of corrugated boxes, printability of paper and the ability to be run efficiently through machinery during converting (into corrugated boxes).
Key Points:
- Determines the need for moisture barrier coatings and sizing of paper
- Identifies possible issues with manufacturing to end use
- Utilize this test method to ensure quality control
Related Standards:
- ISO 287 – Paper and Board – Determination of Moisture Content of a Lot – Oven-Drying
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