MDSE 2650 - LAB 4 VERIFIED ACCURATE STUDY
GUIDE
Certified organic wool yarn - Answers - Grown without the use of pesticides or other
synthetic chemicals
Hemp - Answers - Very long staple fiber, produces more fiber compared to cotton, no
pesticides needed, very little water needed
100% Tencel lyocell - Answers - This fabric is better for the environment because it is
made in a closed loop process where nothing is waster and less harmful chemicals are
used and recovered.
Color grown certified organic cotton yarn - Answers - Grown in colors so no dyeing is
needed; also no pesticides or synthetic chemicals
DYE#1: See Sample #82. At what stage of textile manufacturing was this sample dyed?
Fiber or stock dyed
Yarn-dyed
Piece dyed
Product dyed - Answers - Fiber or stock dyed
DYE #3: How does the final appearance of a cross-dyed plaid differ from that of a yarn-
dyed plaid?
The front and back are different.
Plaids can't be made by cross-dyeing
There is no difference. - Answers - There is no difference.
DYE #6: What is the significance of waterless dyeing?
It is not significant
Colorfastness issues become much worse with waterless dyeing.
Correct! Dyeing is one of the most water-intensive processes in textile manufacturing. -
Answers - Dyeing is one of the most water-intensive processes in textile manufacturing.
Colorfastness - Answers - ability to retain color upon exposure to various elements such
as sunlight, artificial light, perspiration, bleach, laudering, etc.
Bleeding - Answers - color moves into water and may move into another area of another
material
Frosting - Answers - white of light areas appear with abrasion
GUIDE
Certified organic wool yarn - Answers - Grown without the use of pesticides or other
synthetic chemicals
Hemp - Answers - Very long staple fiber, produces more fiber compared to cotton, no
pesticides needed, very little water needed
100% Tencel lyocell - Answers - This fabric is better for the environment because it is
made in a closed loop process where nothing is waster and less harmful chemicals are
used and recovered.
Color grown certified organic cotton yarn - Answers - Grown in colors so no dyeing is
needed; also no pesticides or synthetic chemicals
DYE#1: See Sample #82. At what stage of textile manufacturing was this sample dyed?
Fiber or stock dyed
Yarn-dyed
Piece dyed
Product dyed - Answers - Fiber or stock dyed
DYE #3: How does the final appearance of a cross-dyed plaid differ from that of a yarn-
dyed plaid?
The front and back are different.
Plaids can't be made by cross-dyeing
There is no difference. - Answers - There is no difference.
DYE #6: What is the significance of waterless dyeing?
It is not significant
Colorfastness issues become much worse with waterless dyeing.
Correct! Dyeing is one of the most water-intensive processes in textile manufacturing. -
Answers - Dyeing is one of the most water-intensive processes in textile manufacturing.
Colorfastness - Answers - ability to retain color upon exposure to various elements such
as sunlight, artificial light, perspiration, bleach, laudering, etc.
Bleeding - Answers - color moves into water and may move into another area of another
material
Frosting - Answers - white of light areas appear with abrasion
