PRESENTATION ON SUMMER TRAINING

AT

KANSAI NEROLAC PAINTS LIMITED

ON

MANUFACTURING OF PAINTS AND RESINS

PRESENTED BY:HIMANSHU YADAV

12001005016

INTRODUCTION

• Paint is any liquid, liquefiable, or mastic composition which after application to a substrate in a thin layer is converted to an opaque solid film.

• Paint is used to protect, preserve, decorate, or add functionality to an object or surface by covering it with a pigmented coating.

• An example of protection is to retard corrosion of metal. An example of decoration is to add festive trim to a room's interior.

TYPES/CLASSIFICATION OF PAINT

• Enamel

• Gen Industrial

• HPC

• Cement Plus

• Emulsion

• Distemper

• Automotive

• Marine Paints

• Powder Coatings

ENAM

EL

GEN IN

DUSTRIA

LHPC

CEMEN

T PL

US

EMULS

ION

DISTE

MPE

R

AUTOMOTI

VE

MARIN

E PA

INTS

POW

DER C

OATINGS

05

101520253035404550

Product Share

%Product

COMPOSITION OF PAINT

• Pigments :- Pigments provide the paint its color and finish. Apart from this , it also protect the surface underneath from corrosion and weathering as well as helping to hold the paint together

• Binders :- The binder exists to hold the pigment to the surface. The binder is a polymeric substance, and is either dissolved in the paint or suspended in it by emulsifiers such as drying oils, alkyd resins, epoxy resins etc.

• Solvent :- A solvent is nothing more then a medium in which binder is soluble and the binder should not be so much soluble in solvent that it won’t polymerize.

• Additives :- An additive is a compound which provides additional properties to the paint such as resistance to corrosion, heat, water etc.

EQUIPMENTS/MACHINES USED IN PAINT INDUSTRY• Premixer :- In premixers raw materials are mixed in an early stage in

the manufacturing and distribution process.

• Sand Mill :- Sand mill is used for grinding purposes and also for proper blending/mixing of pigments and solvent, raisin. Apart from paint industry, sand mill is also used in Inks, Pigments, Foodstuff, Dyestuffs, Cosmetic, Electric industry...etc. mid-viscosity liquid grinding.

• Ball Mill :- A ball mill is a type of grinder used to grind materials into extremely fine powder for use in mineral dressing processes, paints, pyrotechnics, ceramics and selective laser sintering.

• Cartridge Filtration :- Cartridge filtration is a type of sediments filters, which is to say it reduce the amount of sediments transported by the fluid trough filtration.

FLOW SHEET OF PAINT PRODUCTION

RESIN MANUFACTURING

• Resin are used in paints to provide the adhesion of paint film to the substrate. Selection of resin for different paints depend upon type of substrate, type of use, type of application and properties requirement.

Types of Resin :-

• Acrylic Resin.

• Melamine Formaldehyde Resin.

• Alkyd Resin.

• Polyester Resin.

MELAMINE FORMALDEHYDE RESIN

• Melamine resin is the reaction product of urea or melamine with formaldehyde undergo etherification reaction with butanol.

• Melamine formaldehyde is a hard, thermosetting plastic material made from melamine and formaldehyde by polymerization. In its butylated form, it is dissolved in n-butanol and xylene. It is then used to cross-link with alkyd, epoxy, acrylic, and polyester resins, used in surface coatings. There are many types, varying from very slow to very fast curing.

ACRYLIC RESIN

• Acrylic resin is forms by addition polymerization between the reacted molecules

• Acrylic resins are a group of related thermoplastic or thermosetting plastic substances derived from acrylic acid, methacrylic acid or other related compounds.

QUALITY CONTROL DEPT.

• Paint manufacturers utilize an extensive array of quality control measures. The ingredients and the manufacturing process undergo stringent tests, and the finished product is checked to insurethat it is of high quality.

TESTS PERFORMED IN QUALITY CONTROL LAB

• HG :- A Hegman gauge, sometimes referred to as a grind gauge or grindometer, is a device used to determine how finely ground the particles of pigment (or other solid) dispersed in a sample of paint (or other liquid) are.

• ER :- ER means electrical resistance. It is useful in finding out the electrical resistance of paint. It is found out by help of millimeters and a ER measuring device.

• DFT TESTER :- DFT tester is used to find out whether the thickness of paint coating is accurate and uniform all over the panel/automotive body.

• Hardness test:- Hardness test is used to find out whether the paint is hard enough to resist all the scratches and dents and it does not get ripped off very easily if something sharp is applied and something blunt is pressed hard.

PAINT DEFECTS

• Sagging :- Incorrect spraying viscosity, spraying technique, flash-off times between coats, and film thickness.

• Solvent Popping :- Insufficient drying of primer filler in corners, edges, rebates and below decorative strips.

• Matting/Gloss :- Film thickness or air humidity too high or substrate too sensitive to solvents

• Poor Opacity :- Substrate not uniform (Effect finishes) or top coat film build too low or coating over thinned

THANKS