This document discusses resin finishing, which is a process that adds crease resistance and recovery properties to cotton fabrics. It involves applying cross-linking resins like DMDHEU to the fabric using a chemical finishing process with water and heat. The resins chemically bond to the cotton fibers and prevent creasing during wear and laundering. The document covers the types of resins used, the objectives of resin finishing, its advantages and disadvantages, how resin concentration and curing temperature affect properties, and provides an example resin finishing recipe.

1. Resin Finishing

2. INTRODUCTION& IMPORTANCE OF
FINISHING

3. ChemicalFinishing
• In chemical finishing, water is used as the medium for applying the
Chemicals.
• Heat is used to drive off the water and to activate the chemicals.
• Resin treatment
• Softener treatment
• Powder Coating
• Soil/Stain Resist
• Fire/Flame retarding
• Special Purpose
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4. RESINFINISHING
• Cotton is mainly selected for apparel purpose because of its
durability, ability to withstand the rough laundering treatments
especially under alkaline conditions, good perspiration absorption
characteristics, and comfort during wear and ability to take up a
wide range of dyestuffs.
• However, proneness to creasing under slight crushing and
retention of the crease for along time give cotton garments a poor
rating during actual wear.
• The ability of a fabric to resist the formation of crease or wrinkle
when slightly squeezed is termed as crease resistance.
• The ability of a fabric to recover to a definite degree is called
crease recovery of the fabric.

5. • Obviously Resin Finishing is the process of bringing out a special property
of „ crease recovery ‟ to Cotton.
• Resin finishing often known by various fancy terminology is an important
process of textile processing.
Resin finishing quite often called
• “ Wash & wear finish”
• “ Anti crease finish”
• “ Crease resistant finish”
• “ Durable press finish”
And
• “ wrinkle free finish”
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6. • Contd…
• Resins are cross linking agents, which form
covalent bond on reaction with OH groups of
cellulosic materials in acidic medium at a pH
of 3-4.

7. RESINS MAINLY FALL INTO TWO
GROUPS
• Deposition type of resins Cross linking type of resins
Deposition type of resins
• This type of resins is deposited on the fabric as surface
coating. No reaction will take place between the fiber
and resin.
They include
• Phenol-Formaldehyde resins
• Urea formaldehyde resin
• Alkyd resins
• Ketone resins
• Vinyl resins

8. Cross Linking Type Of Resins
• These types of resins chemically react with the fiber and crosslink the fiber
molecules.
• The type of finish obtained is durable and much better than deposition type.
• They are also known as N–Methylol compounds as the Methylol groups (-CH2OH)
are attached to the nitrogen. The cross linking compounds are commonly called
resins, but the term pre condensate is correct. The pre condensates further
polymerize to form resins.
• Thefollowingaresomeofthecrosslikingagentsmostlyusedforcreaseresistantfinishing.
• DMU (Di methylol Urea)
• DMEU(Di methylol Ethylene Urea)
• DMDHEU(Di methylol Di hydroxy Ethylene Urea)
• DMPU(Di methylol Propylene Urea)
• TMM(Tri methylol melamine/Melamine formaldehyde

9. Objective
• ThemainobjectiveofresinfinishKeepthefabricflatandsmoothandFreefromundesirabl
ecreases
Advantages
• It improves the Crease Resistance and Crease Recovery property
• It reduces the shrinkage of the fabric during laundering
• It imparts a smooth and quick drying property
• It improves Resilience, Handle and Draping quality
• It improves the weight and Dimensional stability
• It increases the strength of RAYON Sin both wet and dry state
• It gives resistance to degradation by light and laundering
• It improves the fastness to Light and Washing of many dyestuffs
• It prevents the Inter molecular slippage in the fiber core
• It becomes partially water proof and Rot proof

10. Disadvantages
• It decreases the Tensile strength and Tear
strength
• It decreases the Abrasion resistance
• It gives an unpleasant odor
• It gives unwanted Harsh and Stiff feel
• It turns the fabric yellow after chlorine
bleaching

11. RESIN CONCENTRATION
As the concentration of resin increases in the
pad bath the CRA of the resultant product
increases.
Dry Crease Recover
y
(w+d)
Degress
Reagent Concentration
(Mole x 10/ 100G Fabric)

12. EFFECT ON PHYSICAL PROPERTIES

13. EFFECT ON PHYSICAL PROPERTIES
CRA VS CURING TEMP. & RESIN TYPE

14. EFFECT ON PHYSICAL PROPERTIES

15. RECIPES
Resin Finish
• DMDHEU -70 Gpl
• Catalyst -7 Gpl
• Silicone
• Emulsion -10 Gpl
• P. E -10 Gpl
• Acetic acid-1 Gpl
• Anti Stat* -1 Gp