Tapioca, specifically tapioca flour (tapioca starch), is widely used in cardboard factories as the main adhesive (glue) to bond layers of paper together in the corrugated cardboard manufacturing process. Use of Tapioca in Cardboard Factories In corrugated cardboard production, tapioca flour is mixed with water and certain additives to produce a starch-based glue. This glue is primarily used in the corrugator machine, where the corrugated paper (fluting) is bonded to the flat paper (liner). The main functions of tapioca in cardboard glue production include:
1. As an adhesive Tapioca starch has the ability to form an adhesive after undergoing a cooking or gelatinization process. This allows the liner and fluting layers to adhere firmly.
2. Helps produce strong cardboard The quality of the glue affects the bond strength between the cardboard layers. Glue with the appropriate viscosity and adhesive strength can help produce cardboard that is resistant to delamination.
3. Increase production efficiency Starch is relatively easy to obtain and can be used as a base adhesive in large quantities, making it suitable for the production needs of the cardboard industry.
4. Assists in the drying and bonding process After the glue is applied, the water in the glue evaporates and the starch forms a bond on the paper surface. This process helps bond the liner and fluting. Glue Composition Examples In general, starch-based glue for the cardboard industry can consist of: * Tapioca flour as a starch source * Water as a solvent * Caustic soda (NaOH) to aid in the gelatinization process and set the glue properties * Borax or other setting agents, depending on the formulation and production needs The actual composition varies between factories because it is adjusted according to the paper type, machine speed, cardboard grammage, process temperature, and required bond strength. Conclusion The use of tapioca in cardboard factories is primarily related to the production of starch glue to bond the liner and fluting paper. The selection of tapioca quality and the arrangement of glue formulation are very important because they will affect the viscosity, adhesive power, drying speed, and final quality of the cardboard.
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