Shandong Dextrin_DextrinThe adhesive made from dextrin is commonly used in daily life for gluing stamps and envelopes, and as an office adhesive. In industry, it can be used as a sizing adhesive for textiles and paper, a pharmaceutical molding agent, and an adhesive for paper tubes and cardboard tubes, sand casting, and dyeing.DextrinThe adhesive made from dextrin is similar to ordinary starch adhesive, but it has a lower solid content, higher viscosity, faster drying speed, and higher bonding strength than ordinary starch adhesive. It is also inexpensive, stable in performance, moisture-proof and water-resistant.

Previously, the adhesives we used were generally made from starch, but now this phenomenon is gradually beingDextrinreplaced by adhesives made from dextrin.DextrinAlthough dextrin-based adhesives appeared later than starch-based adhesives, using them offers many advantages compared to starch. However, there are many things we need to pay attention to when makingDextrinadhesives.

Shandong Dextrin_DextrinPrecautions for making adhesives:

1、DextrinThe mixing ratio with water is generally2-3times the amount of dextrin.

2The preparation process parameters are generally a heating temperature of50-80℃; and a stirring reaction time of30minapproximately

3、DextrinCommonly used additives include viscosity enhancers such as alkaline inorganic salts (such as borax), certain butyrates: tartaric acid, oxalic acid, oxygenated acetate, etc. These can improve the bonding strength and initial adhesion. After using borax, the alkalinity will increase, so a small amount of sodium sulfite can be added simultaneously to remove any special odors. Common plasticizers include ethylene glycol and sorbitol, used at approximately2percent. In addition, gum can be used together to form a synthetic adhesive.

4、DextrinSteamed together with borax. Then add a small amount of baking soda to produce a dextrin adhesive that is soluble in cold water.

5、DextrinThe adhesive is suitable for manual or mechanical application. The thickness of the adhesive layer can be achieved by adjusting the concentration of the adhesive or the number of applications.