The super absorbent polymer is basically acrylic based polymer that forms gel after absorbing liquid. By this it can hold water up to 30 times its weight. Sodium acrylate, potassium acrylate, alkyl acrylate. This absorbent pad is attached to permeable top sheet made of nonwoven, mainly spunlace fabric. Then the same is attached to non-permeable bottom sheet made of polyethylene. The three layers/ components are glued and sealed to prevent leakage by using heat or ultrasonic vibrations. The content of absorbing pad composite will vary for different types napkins.

The application of accessories like tapes, sealing, etc for comfort of fit to the undergarments is required in some cases. This multi-step manufacturing and folding and packaging is carried out automatically. Precise control on SAP mixing with pulp, pulp weight, size and thickness, quality of seal to ensure leakage prevention, wastage control, etc is an important step in the manufacturing. However, the counting and packaging can be made non-automatic to reduce machine cost. But it may increase recurring cost and wastage.

Project cost

Product: Lady Napkin

Assuming machine cost Rs. 0.90 crore (Make: China)

• Semi-automated machine (packaging manually)
• Production - 350 pcs/ minutes (at 100% capacity and efficiency).
• Efficiency - 80%.
• Waste - 3%.
• Shift/day - 3 shifts of 8 hours.
• Working days - 300 (80% utilization of machine out of 300 working days).