Week 15 Worksheet 1 SP20 PDF

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Week 15 worksheet 1 for TAM 2200...

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TAM 2200: Science of Textiles 15: Worksheet 1

Spring 2020

Week

Chapter 19 Instructions: Print this worksheet and bring it to class to complete. You MUST complete this worksheet in class. Submission: Worksheets are submitted electronically and MUST be completed and submitted IN CLASS to receive any points. You will use the CamScanner app to scan-------------------------------------------------------------+ your worksheet and upload the scanned pages to Canvas, via the Canvas Mobile App. You MUST scan all pages using the Batch mode, so you are submitting one file and not multiple files. Please ensure you verify that the worksheet uploaded to Canvas successfully, that it opens and is viewable BEFORE leaving class. No resubmissions will be allowed outside of class. All answers must be complete.     

Week 15- Learning Outcomes Understand processes of dyeing and printing textiles. Relate quality and performance to the materials and processes used in dyeing and printing. Identify the stages of dyeing and types of printing. Relate dyeing and printing to the performance of textile products. Identify problems related to dyed and printed textiles and textile products.

Class Activities: Activity 1 This activity should take 7-10 minutes to complete. 1. Define pigment colorant and describe its characteristics. Define Pigment

Discuss its characteristics Low color strength, light, small particle size, resistance to wetting

A colorant that is insoluble and must be attached to the fiber with the use of a binding agent

2. Define dye colorant and describe its characteristics. Define Dye Complex organic compound used to add color to materials by binding with them

Discuss its characteristics Fastness to light, resistance to water, sustainability concerns

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3. List the stages of dyeing (in order from first stage to last stage) and discuss the advantages and disadvantages of each stage: Stages of Dyeing

Advantages

Disadvantages

Fiber Stage

Mass pigmentation

Slightly irregular color

Yarn Stage

More costly than fabric dyeing

Less costly than fiber dyeing

Fabric Stage

Costs less to dye fabric

Different fastness characteristics of each dye class

Product Stage

Quick response to demands

Thread and trim could be different colors

Activity 2 This activity should take 7-10 minutes to complete. 1. Use swatch #39, #82, #62, #104, and #176 from your (eco-edition) swatch kit and define the stage that the colorant was added. Swatch # (eco)

Swatch Name

Fiber Content

Stage of Dyeing

#39

Sunbrella Ren. H.C.

50% recycled sunbrella/50% acrylic

Fabric

#82

Herringbone

wool

Fiber

#62

Madras

Cotton

Fiber

#104

Polyester Damask

Polyester

Yarn

2. Use swatch #37 and #57, from your (eco-edition) swatch kit and list the swatch names, fiber contents and identify if these are solution or union dyed: Swatch # (eco)

Swatch Name

Fiber Content

Solution or Union Dyed

#37

Olefin Upholstery

Olefin

Solution

#57

Percale

60% cotton 40% polyester

Union

a. Olefin is a colorless fiber. Why was this fabric solution dyed? The fabric wouldn’t absorb the dye in any other stage due to its low moisture absorbtion

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Activity 3 This activity should take 7-10 minutes to complete. 1. Match each color item to its description Letter G A D

Term Tendering Colorfastness Color migration Bleeding

B C H

Frosting Crocking Shading

I

Dye lot

E

Fume fading

Description Color moves to another area or another material White or light areas appear with abrasion Color rubs off onto other surfaces Color moves into water and from there may move into another area of another material E. Color changes upon exposure to atmospheric gases F. Dye causes fabric to weaken G. Ability to retain color upon exposure to various elements such as sunlight, artificial light, perspiration, bleach, laundering, abrasion, etc. H. Absence of color consistency within the same product, or of a product to a color standard I. Designation for a single bath of dye, products from which will match in color exactly

A. B. C. D.

Activity 4

QUESTION OF THE DAY

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