Sizing Chemicals

What is Sizing Chemicals?

Sizing chemicals increase paper resistance to water and liquid penetration, improving printability, writability, and durability for office, packaging, and specialty grades. Venus Goa supplies internal and surface sizing aids compatible with alkaline and neutral papermaking systems.

What is Sizing Chemicals used for?

Internal sizing agents are added in the wet end to distribute hydrophobic character throughout the sheet, while surface sizing is applied at the size press or coater to tune surface strength and print quality. Proper sizing reduces feathering of inks, controls porosity, and supports coating hold-out on base stock. Venus Ethoxyethers manufactures and supplies in India; request a quote for your requirements.

Sizing chemicals increase paper resistance to water and liquid penetration, improving printability, writability, and durability for office, packaging, and specialty grades. Venus Goa supplies internal and surface sizing aids compatible with alkaline and neutral papermaking systems.

Internal vs surface sizing

Internal sizing agents are added in the wet end to distribute hydrophobic character throughout the sheet, while surface sizing is applied at the size press or coater to tune surface strength and print quality. Proper sizing reduces feathering of inks, controls porosity, and supports coating hold-out on base stock.

Formulation considerations

Sizing performance depends on furnish composition, pH, filler level, and drying profile. Venus surfactant and dispersant additives help stabilize sizing emulsions and improve fibre distribution of sizing agents. For recycled furnishes, desizing chemicals may be required upstream to remove residual size before re-application.

Related products

Explore paper chemicals, dispersing agents, and contact Venus for sizing aid recommendations matched to your machine and grade targets.