fabrics - chapter 18
Terms
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- The performance guideline in ASTM D3691 states that fabrics should not change more than _______ in their lengthwise and crosswise dimensions after being laundered five times or dry cleaned three times.
- 3 percent
-
Bursting strength is measured for all of the following fabrics except:
a. woven
b. knitted
c. knotted
d. twisted - b. knitted
- Lightfastness of interior fabrics is determined using the:
- Gray Scale for Color Change
-
Which of the following is most commonly used to closely simulate natural light:
a. Weather-Ometer
b. carbon-arc lamp
c. xenon-arc lamp - c. xenon-arc lamp
- breaking force
- Inidcates the load required to rupture a fiber, yarn or fabric.
- burnt gas fumes
- Such atmospheric gases as nitrogen dioxide and sulfur dioxide
- bursting strength
- Force required to rupture a knitted fabric.
- dimensional stability
- Ability of a textile structure to maintain its size and shape after use and care.
- distortion of yarn
- Yarn shifting, slipping, or sliding over others, producing areas having different levels of transparency.
- durable press resins
- Chemical treatment used to imp;rove the resiliencey of fabrics composed of cellulose fibers.
- fading
- Loss of or weakening of the original color characteristics.
- heat setting
- Use of heat to stabilize thermoplastic fibers, improving their dimensional stability and that of yarns and fabrics composed of them; also improves resiliency.
- migration
- Movement of dye through fabrfic; results in varied levels of intensity.
- preventive maintenance
- Protective cleaning procedures intended to capture soil and grit in track off, funnel, and cocnentrated traffic areas.
- restorative maintenance
- Maintenance involving overall or wall-to-wall cleaning
- routine maintenance
- Practices such as regular vacuuming to remove accumulated dust.
- shift mark
- Distorted yarn group.
- tear strength
- Used to predict the likelihood that a small cut or puncture would become a large tear with continued use.
- washfastness
- Resistance of colored textiles to fading, bleeding, migration, and/or color change when laundered.