Textile Finishing Finishing is one of the essential processes of a processing mill where all bleached, dyed and printed material are subjected before they are put on the market. The aim of the textile finishing is to render textile goods fit for their end uses. FINISHING GIVES THE FOLLOWING ADVANTAGES:
1. Improved appearance – Lustre, Whiteness etc.,
2. Improved Feel which depends on the handle of the fabric and its Softness, Suppleness, Fullness etc.,
3. It improves the wearing qualities – Non soiling, Anticrease.
4. It gives special properties required for particular uses - Water proofing, Flame proofing etc.,
5. It covers the faults of the original cloth.
6. It increases the weight of the fabric.
7. It increases the sale value of the …show more content…
The introduction of cross-linking imparts dimensional stability and elasticity to the fibrous material and makes it crease resistant and crease recoverable. The most commonly used cross linking agents are nothing but Resins. The resins react with the –OH groups of cellulose forming Cross links which is durable and hence increases the Crease Recovery thereby dimensional stability of the fabric.
Resin finishing gives some advantages and some disadvantages to the fibrous material.
Advantages:
1. It improves the Crease Resistance and Crease Recovery property.
2. It reduces the shrinkage of the fabric during laundering.
3. It imparts a smooth and quick drying property
4. It improves Resilience, Handle and Draping qualities.
5. It improves the weight and Dimensional stability.
6. It increases the strength of rayons in both wet and dry state.
7. It gives resistance to degradation by light and laundering.
8. It improves the fastness to Light and Washing of many dyestuffs.
9. It prevents the Inter molecular Slippage in the fibre core.
10. It becomes partially water proof and Rot-proof.
Disadvantages.
1. It decreases the Tensile strength and Tear …show more content…
The purpose of this washing is to neutralize the residual acidity and also to remove any uncombined reagent which causes undesirable effect. The fabric may be washed with 1-2 gpl of anionic wetting agent and 2-4 gpl of soda ash at 50 - 60ºC for 10 mins.
Softening and drying
After washing, the material is rinse in waster containing softening agent. Then finally it is stentered in ordinary stenter to dry and to get even width of fabric.
HEAT SETTING
The most general reason for heat setting is to achieve the dimensional stability of a yarn or fabric containing thermoplastic fibres. In order to understand what is required, it is helpful to consider the stress in individual fibres. During drawing, spinning, weaving or knitting, and finishing processes the fibres are subjected to extension, twisting and bending forces that leave significant stresses in the fibres.
As a result, any subsequent heat treatment or washing produces stress reductions (relaxation) that show up as shrinkage or change of shape (for example, of loops in knitted goods). The objective of a heat setting process is therefore the achievement of a desired stress-free form of the fibres making up a textile product. It is rarely possible to achieve perfect setting but an acceptable degree of stability to garment making, wear and washing can be
1. Improved appearance – Lustre, Whiteness etc.,
2. Improved Feel which depends on the handle of the fabric and its Softness, Suppleness, Fullness etc.,
3. It improves the wearing qualities – Non soiling, Anticrease.
4. It gives special properties required for particular uses - Water proofing, Flame proofing etc.,
5. It covers the faults of the original cloth.
6. It increases the weight of the fabric.
7. It increases the sale value of the …show more content…
The introduction of cross-linking imparts dimensional stability and elasticity to the fibrous material and makes it crease resistant and crease recoverable. The most commonly used cross linking agents are nothing but Resins. The resins react with the –OH groups of cellulose forming Cross links which is durable and hence increases the Crease Recovery thereby dimensional stability of the fabric.
Resin finishing gives some advantages and some disadvantages to the fibrous material.
Advantages:
1. It improves the Crease Resistance and Crease Recovery property.
2. It reduces the shrinkage of the fabric during laundering.
3. It imparts a smooth and quick drying property
4. It improves Resilience, Handle and Draping qualities.
5. It improves the weight and Dimensional stability.
6. It increases the strength of rayons in both wet and dry state.
7. It gives resistance to degradation by light and laundering.
8. It improves the fastness to Light and Washing of many dyestuffs.
9. It prevents the Inter molecular Slippage in the fibre core.
10. It becomes partially water proof and Rot-proof.
Disadvantages.
1. It decreases the Tensile strength and Tear …show more content…
The purpose of this washing is to neutralize the residual acidity and also to remove any uncombined reagent which causes undesirable effect. The fabric may be washed with 1-2 gpl of anionic wetting agent and 2-4 gpl of soda ash at 50 - 60ºC for 10 mins.
Softening and drying
After washing, the material is rinse in waster containing softening agent. Then finally it is stentered in ordinary stenter to dry and to get even width of fabric.
HEAT SETTING
The most general reason for heat setting is to achieve the dimensional stability of a yarn or fabric containing thermoplastic fibres. In order to understand what is required, it is helpful to consider the stress in individual fibres. During drawing, spinning, weaving or knitting, and finishing processes the fibres are subjected to extension, twisting and bending forces that leave significant stresses in the fibres.
As a result, any subsequent heat treatment or washing produces stress reductions (relaxation) that show up as shrinkage or change of shape (for example, of loops in knitted goods). The objective of a heat setting process is therefore the achievement of a desired stress-free form of the fibres making up a textile product. It is rarely possible to achieve perfect setting but an acceptable degree of stability to garment making, wear and washing can be