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Product Name: Dextrin
Product introduction:
Dextrins can be made from almost any starch source, like corn, wheat or potatoes. Dextrins are classified into a few different types: typically white dextrins, yellow or canary dextrins or British gums. They are all water-soluble solutions and are typically less viscous than the starch that they came from (potato or wheat, for instance). There are several different uses for dextrins. One of the most popular is in the adhesive industry. Because of their water solubility, dextrins are ideal for water-activated adhesives and glues (think postage stamps and envelopes, where you lick them to activate the adhesive properties). Dextrins are also used to print on cotton fabrics in the textile industry! White dextrins alone are used in the food industry. These are typically created by a combination of acid and water during hydrolysis.

Detailed Introduction

Dextrin, a low molecular weight carbohydrate produced by hydrolysis of starch, is the main ingredient in certain water-based adhesives. Dextrin adhesive glue is a liquid glue manufactured by cooking starch to 200°F in water, which forms a solution that can be modified for tack, open time, and various other properties.

Dextrin adhesives provide clean machining and excellent bonding properties to cellulosic materials, such as paper and paperboard. They exhibit high wet tack, are light straw to amber in appearance and are typically cost effective.

Dextrin applications include laminating, converting, printing, core winding, carton and case sealing, paper bag and envelope manufacturing. Their re-moistenability makes them useful in the manufacturing of stamps and envelopes, and because they are water soluble they can be cleaned easily.

The most important properties of dextrins as compared to unmodified starch are:

• Increased water solubility

• Increased viscosity stability

• Reduced paste viscosity