STATISTICAL PROCESS CONTROL - PROCEDURES FOR CHARTING WARP

• This Technical Information Paper will concern itself only with statistical techniques used to measure and chart cross directional warp. Because there are no accepted procedures to measure the magnitude of end-to-end, "S," and twist warp, other statistical techniques must be used to record and chart the presence of these additional types of warp.
• When a process is in statistical control, management must decide if the process average and estimated standard deviation are acceptable. If not, then management must take steps to change the process average and/or narrow the range of measurement readings (from which the estimated standard deviation is calculated).

It Provides information on:

• Scope.
• Safety Precaution.
• Content.
• Test Methods.
• Control Charts.
• Corrective measures
• Keywords.

It Benefits:

• Technical Manager.
• Researchers.
• Laboratory Personal.
• Analyst.