การลดฟองอากาศในกระบวนการผลิตบรรจุภัณฑ์พลาสติก / ภูมินทร์ แจ่มเชื้อ = Reduction of bubble defects in plastic packaging production process / Poomin Jamchue
The aim of this research is to investigate the drying process for the dry laminates. The relations of the bubble defects in nylon - linear low density polyethylene ( NY-LLDPE) film and the drying parameters (oven temperature, roller speed and tension force) are examined by using the Response Surface Analysis with the Box-Behnken design.
The model to predict the bubble defects is represented by the second-order response function. The experimentally obtained model clearly shows that the all drying conditions are the significant factors on the bubble defects. It has been proved that the developed bubble defects prediction model can be effectively used to predict the bubble defects with the 95% confident level.
The optimum drying condition, which is determined and obtained based on the consideration of the minimum bubble defects, is at the roller speed of 150 rpm, the tension force of 400 V, and the oven temperature of 85 Celcius degree.