Rule 10 - Fiber Content of Special Types of Products.

(a) Where a textile fiber product is made wholly of elastic yarn or material, with minor parts of a non-elastic material for structural purposes, it shall be identified as to the percentage of the elastomer, together with the percentage of all textile coverings of the elastomer and all other yarns or materials used therein. Where a textile fiber product is made in part of elastic material and in part of other fabric, the fiber content of such fabric shall be set forth sectionally by percentages as in the case of other fabrics. In such cases the elastic material may be disclosed by describing the material as elastic followed by a listing in order of predominance by weight of the fibers used in such elastic, including the elastomer, where such fibers are present by five percentum or more with the designation other fiber or other fibers appearing last when fibers required to be so designated are present. An example of labeling under this paragraph is:

Front and back non-elastic sections:

50% Acetate
50%Cotton

Elastic: Rayon, Cotton, Nylon, Rubber.

 

(b) Where drapery or upholstery fabrics are manufactured on hand-operated looms for a particular customer after the sale of such fabric has been consummated, and the amount of the order does not exceed 100 yards of fabric, the required fiber content disclosure may be made by listing the fibers present in order of predominance by weight with any fiber or fibers required to be so designated as other fiber or other fibers appearing last, as for example:

Rayon
Wool
Acetate
Metallic
Other fibers.

 

(c)(1) Where a manufactured textile fiber is essentially a physical combination or mixture of two or more chemically distinct constituents or components combined at or prior to the time of extrusion, which components if separately extruded would each fall within different existing definitions of textile fibers as set forth in Rule 7, the fiber content disclosure as to such fiber, shall for all purposes under 'these Rules (i) disclose such fact in the required fiber content information by appropriate nondescriptive terminology, such as biconstituent fiber or multiconstituent fiber, (ii) set out the components contained in the fiber by the appropriate generic name specified in Rule 7 in the order of their predominance by weight, and (iii) set out the respective percentages of such components by weight.

(2) If the components of such fibers are of matrix-fibril configuration, the term matrix-fibril fiber or matrix fiber may be used in setting forth the information required by this paragraph.

(3) Examples of proper fiber content designations under this paragraph are:

100% Biconstituent Fiber
(65% Nylon, 35% Polyester)
80% Matrix Fiber (60% Nylon, 40% Polyester)
15% Polyester
5% Rayon

(4) All of the provisions as to fiber content disclosures contained in the Act and Regulations, including the provisions relative to fiber content tolerances and disclosures of fibers present in amounts of less than five percentum of the total fiber weight, shall also be applicable to the designations and disclosures prescribed by this paragraph. [16 CFR 303.10, as amended, effective July 26, 1960, December 13, 1965 and August 18, 1969.)