Effect of finishing on Knit Fabrics

School of Science and Engineering, Department of Textile Engineering Southeast University Effect of finishing on Knit Fabrics Effect of finishing on Knit Fabrics 1 School of Science and Engineering, Department of Textile Engineering Southeast University Introduction  Textile finishing is a term commonly applied to different processes that the textile materials undergo after pretreatments, dyeing or printing for final embellishments to enhance their attractiveness and sale apparels well as for comfort and usefulness.  Finishing process improves the physical properties of fabric like feel, softness, tensile strength, elongation, G.S.M, dia, shrinkage, spirality, twisting, and insulation properties. Dhaka,15.05.2011 Effect of finishing on Knit Fabrics 2 School of Science and Engineering, Department of Textile Engineering Southeast University The techniques of finishing depend on the following: • Nature of the fabric, i.e. chemical composition, state, weave, etc. This determines the appearance, i.e. transparences, luster, fullness, weight, whiteness, etc. • The physical properties of the fabric, i.e. feel, softness, stiffness, tensile strength, elongation, shrinkage property, insulation etc. • The end-use of the material i.e. non-shrinking, non-creasing, stiffening etc. • Receptivity of the fabric to various finishing operations, i.e. water-proofing, flame-proofing, rot-proofing etc. • Susceptibility to chemical modifications. Dhaka,15.05.2011 Effect of finishing on Knit Fabrics 3 School of Science and Engineering, Department of Textile Engineering Southeast University  Softness  Lusture  Pleasant handle  Drape  Dimensional stability  Crease recovery  Antistatic  Non-slip  Soil release Finishing treatments are basically meant to give the textile material certain desirable properties like: Dhaka,15.05.2011 Effect of finishing on Knit Fabrics 4 School of Science and Engineering, Department of Textile Engineering Southeast University Definition of Finishing Finishing is a term usually employed for process other than scouring, bleaching, dyeing or printing, to which the fabric are subjected to improve their appearance, properties & serviceability. Dhaka,15.05.2011 Effect of finishing on Knit Fabrics 5 School of Science and Engineering, Department of Textile Engineering Southeast University Classification of Finishes  The most common classifications are: • Aesthetic finishes: • Functional finishes  Textile finishes are also categorized as: • Mechanical finishes (Dry finishes) • Chemical finishes (Wet finishes) Dhaka,15.05.2011 Effect of finishing on Knit Fabrics 6 School of Science and Engineering, Department of Textile Engineering Southeast University Classification of Finishes Finishes can also be classified by their degree of performance as follows: • Permanent finishes • Durable finishes • Semi-durable finishes • Temporary finishes Dhaka,15.05.2011 Effect of finishing on Knit Fabrics 7 School of Science and Engineering, Department of Textile Engineering Southeast University Controling parameter of finishing Dhaka,15.05.2011 Effect of finishing on Knit Fabrics 8 • Dia of the fabric • GSM of the fabric • Shrinkage of the fabric • Weight loss or gain • Tension control • Temparature of different stage • Spirality control etc. • Color fastness of the fabric etc. School of Science and Engineering, Department of Textile Engineering Southeast University Finishing process Dhaka,15.05.2011 Effect of finishing on Knit Fabrics . 9 School of Science and Engineering, Department of Textile Engineering Southeast University Finishing process Dhaka,15.05.2011 Effect of finishing on Knit Fabrics 10 [...]... Dhaka,15.05.2011 Effect of finishing on Knit Fabrics 19 Southeast University School of Science and Engineering, Department of Textile Engineering Results and discussion For finding the effect of finishing on knit fabric some experiment are done on different types of knit fabric Dhaka,15.05.2011 Effect of finishing on Knit Fabrics 20 Southeast University School of Science and Engineering, Department of Textile... Discussion Dhaka,15.05.2011 Effect of finishing on Knit Fabrics 30 Southeast University School of Science and Engineering, Department of Textile Engineering References • • • • http://www.thesmarttime.com Books of Finishing ,By-Petro Bellini,Ferruccio Bonetti Lecture sheet of Dr Zulhash Uddin Experimental data from Paddma poly cotton knit fabrics Ltd Dhaka,15.05.2011 Effect of finishing on Knit Fabrics. .. Dhaka,15.05.2011 Effect of finishing on Knit Fabrics 16 Southeast University School of Science and Engineering, Department of Textile Engineering Effect of slitting  If dia is less than basket dia than fabrics do not cut and if dia is greater than basket than GSM problem occurs  Cut the fabric break wales line wise  Basket dia must be less then fabric dia Dhaka,15.05.2011 Effect of finishing on Knit Fabrics. .. variation Stages Dhaka,15.05.2011 Effect of finishing on Knit Fabrics 21 Southeast University School of Science and Engineering, Department of Textile Engineering Compare the Variation of GSM for 1×1 rib fabric and Interlock fabric GSM GSMChange 230 210 220 205 210 200 200 195 190 190 180 185 170 Grey Dyeing Slitting Stentering Compacting 180 Grey Dhaka,15.05.2011 Effect of finishing on Knit Fabrics. .. setting takes for width fixed of Lycra fabric Dhaka,15.05.2011 Effect of finishing on Knit Fabrics 18 Southeast University School of Science and Engineering, Department of Textile Engineering Effect of Compacting Many textile manufacturers have, and still do, rely on compaction as a means of shrinkage control Compaction is a method whereby the course loops are compressed upon themselves Different machines... School of Science and Engineering, Department of Textile Engineering Finishing terms GSM: GSM means fabric weight in grams per square meter’s GSM = Dhaka,15.05.2011 Fabric Weight ( In Grams ) length ( In m2 ) Effect of finishing on Knit Fabrics 11 Southeast University School of Science and Engineering, Department of Textile Engineering Finishing terms Shrinkage: The amount of shrinkage for any given knit. .. for this presentation ceremony Dhaka,15.05.2011 Effect of finishing on Knit Fabrics 32 Southeast University School of Science and Engineering, Department of Textile Engineering Thank you ALL for your Attention Dhaka,15.05.2011 Effect of finishing on Knit Fabrics 33 Southeast University School of Science and Engineering, Department of Textile Engineering ... The stability of color or its fastness is one of the most important requirements of valuable customers Colour fastness of dyed goods means the resistance power of dyed goods against any hazards The color textiles show different resistance power to different agencies such as light, wash, rubbing, perspiration, water, bleach, acid, alkali etc Dhaka,15.05.2011 Effect of finishing on Knit Fabrics 14 Southeast... Effect of finishing on Knit Fabrics Slitting Stentering Compacting 26 Southeast University School of Science and Engineering, Department of Textile Engineering Spirality % change for Single jersey and single jersey lycra fabric Spirality% Spirality% 3.0 4.5 4.0 2.5 3.5 3.0 2.0 2.5 2.0 1.5 1.5 1.0 1.0 0.5 0.5 0.0 Dyeing Slitting Stentering Compacting Dyeing Dhaka,15.05.2011 Effect of finishing on Knit. .. on knit garments  If do not take proper ballooning than folding mark occurs Dhaka,15.05.2011 Effect of finishing on Knit Fabrics 15 Southeast University School of Science and Engineering, Department of Textile Engineering Effect of Hydro and Dewatering  If squeeze roller/padder pressure is high than fabric surface show pressure mark  If over feed dia of delivery side is not perfect than length wise . School of Science and Engineering, Department of Textile Engineering Southeast University Effect of finishing on Knit Fabrics Effect of finishing on Knit Fabrics 1 School of Science and. finishes Dhaka,15.05.2011 Effect of finishing on Knit Fabrics 7 School of Science and Engineering, Department of Textile Engineering Southeast University Controling parameter of finishing Dhaka,15.05.2011 Effect of finishing. various finishing operations, i.e. water-proofing, flame-proofing, rot-proofing etc. • Susceptibility to chemical modifications. Dhaka,15.05.2011 Effect of finishing on Knit Fabrics 3 School of Science