DEXTRIN GLUE | STARCH ADHESIVE
Overview
Dextrin glue—also known as starch adhesive—is a plant-based, water-soluble bonding material widely used in the paper, packaging, labeling, corrugated board and envelope industries. It is produced by controlled hydrolysis of starch, resulting in a cleaner, faster-setting adhesive with smoother viscosity and better tack compared to raw starch.
This adhesive type is environmentally friendly, biodegradable and safe for food-related applications.
What Is Dextrin Glue
Dextrin adhesive is a carbohydrate-based bonding agent derived from starch through heat treatment. Dextrins dissolve easily in hot water and provide smooth, stable, non-toxic glue formulations ideal for paper bonding.
Properties
-
Water-soluble, easy to prepare
-
Medium to high viscosity depending on grade
-
Good tack and fast setting
-
Excellent film clarity
-
Biodegradable and non-toxic
-
Compatible with paper, cardboard and porous substrates
Ingredients & Composition
Typical dextrin glue contains:
-
White or yellow dextrin
-
Water
-
Plasticizer (glycerin, sorbitol)
-
Preservatives
-
pH adjusters (borax, mild alkali)
-
Optional thickener or tackifier
How to Make Dextrin Glue (General Procedure)
-
Heat water in a mixing tank.
-
Slowly add dextrin powder under agitation.
-
Mix until fully dispersed and smooth.
-
Add plasticizer and optional additives.
-
Adjust pH for stability.
-
Cool and filter to obtain a homogenous adhesive.
Applications & Uses
-
Corrugated cardboard bonding
-
Paper lamination
-
Envelope sealing
-
Labeling adhesives
-
Stamp / ticket adhesives
-
General paper packaging
Advantages
-
Eco-friendly and non-toxic
-
Cost-effective
-
Easy to modify (viscosity, tack)
-
Excellent adhesion to cellulose-based materials
-
Safe for food-contact packaging
Summary
Dextrin glue (starch adhesive) is a sustainable, efficient, and economical adhesive widely used in paper and packaging industries. Produced from modified starch, it provides smooth viscosity, excellent tack, and reliable performance with simple formulation requirements. Its environmental safety and versatility make it a leading choice in natural adhesive technologies.
