A package engineer needs to ensure that the seals on plastic bags that hold a product are strong enough to prevent leaks, yet not so strong that the consumer cannot open the bags. The bags keep surgical instruments dry and sterile until someone opens the bags. The engineer wants to optimize the seal strength to between 20 and 32 lbs (lower and upper bounds) with a target of 26 lbs. The engineer also wants to minimize the variability of seal strength so that it is 1 or less. The engineer determines that hot bar temperature, dwell time, hot bar pressure, and material temperature are factors that affect the strength of the seal. The engineer also determines that hot bar temperature, dwell time, and material temperature are important factors that affect the variation. The engineer designs a central composite response surface experiment to examine the factors that impact the strength and variability of the seal. The engineer uses the natural log transformation to analyze the variability of the seal.
You can use this data to demonstrate Analyze Response Surface Design. You can use the data with the model to demonstrate response surface commands such as Predict, Factorial Plots, Contour Plot, Surface Plot, Overlaid Contour Plot, and Response Optimizer.
To view a summary of the design, choosethen click the design in the folder for the worksheet.
|StdOrder||The order of the runs in standard order (also called Yates order).|
|RunOrder||The order of the runs in random order.|
|PtType||The point type: 0 = center point, 1 = corner point, -1 = axial point.|
|Blocks||The blocks. In this design, all the design points are contained in a single block.|
|HotBarT||The hot bar temperature (continuous factor).|
|DwelTime||The dwell time (continuous factor).|
|HotBarP||The hot bar pressure (continuous factor).|
|MatTemp||The material temperature (continuous factor).|
|Strength||The strength of the seal in pounds (response).|
|VarStrength||The variability in the strength of the seal (response).|