Textile Dyeing: History and Safety

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Questions and Answers

Match the dye or printing method with its appropriate description:

Direct Digital Printing (DDP) = Utilizes inkjet technology and CAD systems to print directly onto fabric, often requiring pre-treated fabrics or specialized equipment. Discharge Printing = Involves a chemical process to remove color from previously dyed fabric, typically used for creating white designs on dark backgrounds. Resist Printing = Employing a technique such as batik or ikat, this method prevents dye from penetrating certain areas of the fabric, creating patterns. Sublimation Printing = A process where dyes are converted from a solid to a gas without liquid phase, transferring a design from paper to fabric under heat and pressure.

Match the dyeing stage to its specific procedure:

Pre-fibre Dyeing = Pigmentation of the solution occurs prior to extrusion, offering excellent colorfastness for manufactured fibers. Fibre Dyeing = Loose fibers are dyed before spinning, allowing complex heather patterning. Yarn Dyeing = Yarns, in skeins or on beams, are submerged in dye vats, providing high-quality patterned fabrics. Piece Dyeing = Fabric is dyed, allowing for techniques like cross dyeing with different fibers to create distinct color combinations.

Match the weaving fabric printing method with its appropriate description:

Warp Printing = Involves printing designs onto warp yarns before weaving, resulting in soft, muted patterns in the final fabric. Roller Printing = Uses engraved rollers to apply intricate designs onto fabric, suitable for large production quantities. Block Printing = A manual, labor-intensive procedure using carved blocks to stamp patterns onto fabric. Screen Printing = Forces ink or dyes through a stenciled mesh to create designs on fabric.

Match the dyeing-related term with the correct definition:

Mordant = A substance used to fix dyes on fabrics by forming a coordination complex with the dye, which then attaches to the fiber. Dye Liquor = The solution containing dissolved dyestuff in a given quantity of water, which serves as the medium for dyeing the fabric. Exhaustion = The stage in dyeing where the dye solution loses its color as the textile becomes dyed. Diffusion = The movement of dye molecules into the amorphous regions of the textile, influenced by the size of the dye molecule and available dye sites. Signup and view all the answers

Match the resist printing method with its correct characteristic or application:

Batik = Utilizes wax as a resist medium, applied with a tjap or tjanting, allowing for multiple dyeing stages and intricate designs. Ikat = Involves binding yarns at specific intervals before dyeing, creating blurred or fuzzy patterns when woven. Stencil Printing = Employs cut-out designs on a resist material, through which printing paste is applied using brushes or sponges. Screen Printing = Uses a screen to transfer ink onto a substrate, except in areas blocked by a stencil. Signup and view all the answers

Match the safety procedure with its rationale in the context of dyeing and printing:

Wearing Rubber Gloves = Protects the skin from direct contact with potentially harmful chemicals and dyes. Working in a Well-Ventilated Area = Minimizes inhalation of potentially toxic vapors released during the dyeing or printing process. Adding Dye to Water = Prevents concentrated dye from splashing, ensuring more controlled mixing and safer handling. Storing Chemicals Correctly = Reduces the risk of accidental spills, contamination, or reactions between incompatible substances. Signup and view all the answers

Match the direct printing method with its defining characteristic:

Block = Patterns are hand-carved into a block, making printing a slow, time-consuming method. Roller = Engraved designs are rolled repeatedly onto the fabric, enabling multicolors and allowing complex patterns to be created. Warp = Designs printed onto warped yarns, making a blurry fabric pattern once plain-dyed weft yarns are woven in. Direct Digital = Uses inkjet technology so designs can be created on a home computer and printed directly onto commercial prepared fabric sheets. Signup and view all the answers

Match the stage of dyeing with the expected outcome or goal:

Wetting Out = Ensures the fibres swell, causing the polymers to loosen, allowing the dye to enter easier. Migration = The process where dye molecules are attracted and move toward the fibre. Exhaustion (Dyeing Stage) = The dye solution loses colour as the process dyes the textile. Anchoring = Natural forces assist the polymers of fibre and dye to bond, closing swollen fibres from temperature. Signup and view all the answers

Match the type of dye with the textile fiber which it is most suitable:

Direct Dye = Cellulosic fabrics, such as cotton and linen, due to their direct affinity. Reactive Dye = Cellulosic, wool and silk. Can also be used on nylon and acrylic. Disperse Dye = Polyester fibres and nylon Acid Dye = Animal protein. Also can be used on nylon, acrylic and modified rayon. Signup and view all the answers

Match the apparel dyeing with how it's achieved:

Cross Dyeing = A fabric made from two different fibres creates colour combinations and patterning. Union Dyeing = The goal is to achieve uniformity of solid fabric. Solution Dyeing = Colour pigments are added directly to the pre-fibre mix before it becomes fibre, producing excellent colour fastness and uniformity. Top Dyeing = Tops or ropes of combed fabrics are dyed. Signup and view all the answers

Match the process of embroidery with the desired outcome:

Straight Stitch = Creates even tension and provides a smooth, flat surface. Back Stitch = A backward motion creates the needed outline. Satin Stitch Appliqué = Creates straight lines (SWO/SL3) to act with method for satin applique. Free-motion Stitch Appliqué = Decorative edge is achieved on appliance shape. Signup and view all the answers

Match the process of reverse appliqué with its goal:

Using Fabric Pen = Draw a shape onto the right side of fabric. Lay The Correct Right Side = The correct side of is needed for applique fabric, to make an under shape. Cutting Close To Straight Stitching = Carefully cutting close to the stitching using scissors. Embroidery = Embroidery is suitable for a wide variety of natural textures, and the texture is essential to create a design. Signup and view all the answers

Match the safety equipment with its key advantages:

Rubber Gloves = Allows skin protection and prevents harmful chemicals from contacting the skin. Well-Ventilated Area = Prevents the buildup of potentially harmful gases. Adding Dye To Water = Allows for less concentrated mixing of chemicals. Storing the Chemicals Correctly = Keeps the chemicals out of harm's way. Signup and view all the answers

Explain how dye is produced from plant and animal substances:

Indigo Dye = Derived from the leaf of Indigifera tinctorial, giving a very fast blue. Tyrian Purple (Textile Dye) = Derived from shellfish and was an expensive dye. Cochineal (Textile Dye) = Obtained from the cochineal beetle on the cactus plant and was cultivated in Mexico. Dyes Made from Coal or Petroleum-Based Organic Compounds = Synthesized in the 21st century. Signup and view all the answers

Match the modern types of textile printing:

Printing Textiles = The process creates an economic fabric coloring designs. Printing Design = The process uses the textile art of surface decoration. Printing Art = The process utilizes a visual pigment-based art. Multi-coloured Printing = Can be used on intricate designs. Signup and view all the answers

Match the printing design types:

Printing Fabric = Allows flexibility in the colouration used when creating a patterned fabric. Printed Design = Can be used for the base of embroidery. Printing Designs = Can be economically used to colour fabric with patterns. Printing Colour = Is an important feature in the textile process. Signup and view all the answers

Match the textile type with their defining characteristics:

Colour = Arguably the most important part of textile design. Aesthetic = Colour in its intensity, depth, and reflection creates a powerful visual. Signup and view all the answers

Match the fabric to the type of loom which it is suited for:

Continuous Dyeing Looms = Are for the textile products. Foam dyeing = Is economical and gives a visual effect in the dyeing process. Textiles = Made in small batches, in short lengths. Yarns = Done on continuous machines. Signup and view all the answers

Match a dye quality or risk with the effect that can be caused:

Run Off = Foam Dyeing is more economical due to this quality (less water). Labour Intensive = Batik is very slow due to this quality. Blurred or Fuzzy Edges = Ikat fabrics have noticeable features. Seam or Design Areas = Dye fails to penetrate evenly here. Signup and view all the answers

Match the type of dye:

Dye Liquor = Known as dye solution. Dyeing Can Be = Defined as permanent colour for a fibre. Dye Solution = Where dye is being dissolved. The Quantity of Dye = Can be determined by the weight of the fabric. Signup and view all the answers

Flashcards

Fabric Colouration

Adding color to fabric through printing or dyeing methods.

The role of Colour

The most important aspect in design inspiration and perceived aesthetic value of textiles, affecting intensity, depth, and reflection.

Work Health and Safety

The practice of handling, storing, and using dyestuff and printing pastes with care, along with following the maker's instructions.

Pigment

An insoluble, colored substance applied to the surface of a material, usually attached by a binding material and is quite viscous.