Dextrins are prepared by heat treatment in presence of chemical characteristics and properties of starch .They are intermediate between starch and sugar derived from starch, which find application in dyes.addhesives, fondaries and other industries
Unlike starch dextrin are soluble in water .The severity of the treatment determines the degree of solubility ,which is the basis of classifying or grading dextrin finished dextrin are very fine powder varying in colour form from pure white to light yellow.
Adhesive Industries:The Adhesives Industries uses large amount of yellow dextrin in the preparation of liquid and dry adhesives. Dextrin goes in to the solution instantly and with a lesser quantity of water, because of their greater adhesive strength and fluidity.
Dextrin is widely used in the manufacture of:-
Chemical & Dyes IndustriesThe advantage of dextrin in the dye stuff industries are so well recognized that good many large scale manufactures have taken to using highly soluble dextrin as diluents to standardized the dyes with respect to the range of colour. Dextrin washes out quickly and easily and do not react with chemicals used in the process
FoundriesYellow dextrin serves as an excellent binding agent for sand core s in foundry operation s. It gives high green bond strength necessary for the mould to remain intact during handling.
Textile Industries As dextrin do not easily react with chemicals, they are specifically suitable for application in the textile field. In Textile printing, they are used as thickener. Free of grit and other impurities, which usually accompany lower grade of starch, they ensure that the copper rolls (used in printing) do not suffer from abrasion. In sizing, they are used with starch for increase adhesiveness. In finishing, they give desired feel to the fabrics
Color IndustriesDextrin is largely used in dry distemper. Two to three Percentage of dextrin, mixed with with chalk and pigment, acts as carrier and impact good adhesion of the color to the wall.
PackagingWhite & Yellow dextrin is available in 25-50Kgs. Plastic lined HDPE woven bags
- Manufacture of spiral convolute tubes.
- Carbon paper manufacturing, abbresive and in dry distemper.
- Machine labeling of tins /cartoon packages envelop corrugated boxes.
- Also used by crackers manufacture due to adhesives properties.
- In Paper tubes and paper cones.
- In book binding cartoon sealing cigrates pasting match head and matchbox making.
- As core binder in Refractory and foundry operations.