Study of a process:

The paint

Lydie Magré – Chloé Vianez

Introduction

• Primitive paintings

• Now ?

• Purpose

Contents

I. Raw materials

II. The manufacturing process

III. Conclusion

I. Raw materials

II. Manufacturing process

III. Conclusion

I. Raw materials• Components:

– pigments– solvents– resins– various additives

I. Raw materials

II. Manufacturing process

III. Conclusion

I. Raw materials• The pigments

– white pigment > titanium dioxide– black pigment > carbon black– reds > iron oxide and cadmium

sulfide – yellows and oranges > metallic salts – blues and greens > iron blue and

chrome yellows

I. Raw materials

II. Manufacturing process

III. Conclusion

I. Raw materials

• The solvents

– various low viscosity, volatile liquids

– include petroleum mineral spirits

and aromatic solvents such as benzol, alcohols, esters, ketones, and acetone

I. Raw materials

II. Manufacturing process

III. Conclusion

I. Raw materials• The resins

– natural resins > lin-seed, coconut, and soybean oil

– synthetic resins > alkyds, acrylics, epoxies, and polyurethanes

I. Raw materials

II. Manufacturing process

III. Conclusion

I. Raw materials• The additives

– many purposes– calcium carbonate and aluminum

silicate > fillers that give the paint body and substance without changing its properties

– Other additives produce certain desired characteristics

I. Raw materials

II. Manufacturing process

III. Conclusion

II. The manufacturing process

I. Raw materials

II. Manufacturing process

III. Conclusion

II. The manufacturing process

1) Making the paste

• Premix of the pigment with resin, solvents and additives

I. Raw materials

II. Manufacturing process

III. Conclusion

II. The manufacturing process

2) Dispersing the pigment

• mixture for most industrial and some consumer paints:

– transportation into a sand mill– filtration

I. Raw materials

II. Manufacturing process

III. Conclusion

II. The manufacturing process• For 90% of the water-based

latex paints designed for use by individual homeowners:

– high-speed dispersion by a tank

– high-speed agitation by a circular

I. Raw materials

II. Manufacturing process

III. Conclusion

II. The manufacturing process

3) Thinning the paste

• Transfer to large kettles

• Bustle with the proper amount of solvent

I. Raw materials

II. Manufacturing process

III. Conclusion

II. The manufacturing process

4) Quality control

• Inspection to a finished paint for its density, dispersion, and viscosity

• Study for bleed resistance, rate of drying, and texture

I. Raw materials

II. Manufacturing process

III. Conclusion

II. The manufacturing process• The different tests:

– color– resistance of the color to

fading– paint hiding power– gloss

I. Raw materials

II. Manufacturing process

III. Conclusion

II. The manufacturing process

–mar resistance– adhesion– scrubbability– weathering– fire retardancy

I. Raw materials

II. Manufacturing process

III. Conclusion

II. The manufacturing process

5) Canning the paint

• empty cans are rolled horizontally onto labels

• lids are placed onto the filled cans

• the lids are sealed• the handles are cut and shaped

I. Raw materials

II. Manufacturing process

III. Conclusion

II. The manufacturing process

6) Packaging and dispatching

• Cans (usually four) are boxed and stacked before being sent to the warehouse

I. Raw materials

II. Manufacturing process

III. Conclusion

III. Conclusion

• A process rather polluting so paint manufacturers treat their waste or recycle them.

Thank you for your attention

Does anyone have any questions?