Hemmer

A type of folder in which the raw edge is turned under or over for sewing.

Hemp

A coarse durable bast fiber of Cannabis sativa found all over the world. Used primarily for twines cordage halyards and tarred riggings.

Hemp, true

A fine, light-coloured, lustrous, and strong bast fibre, obtained from the hemp plant,
Note.. The colour and cleanliness vary considerably according to the method of preparation of the fibre, the lower grades being dark cream and containing much non-fibrous matter. The fibre is obtained by retting. Its principal use is in twine and cordage, but some of the finer grades are uses] in weaving. The fibre ranges in length from 1 to 2.5m. The term hemp is often incorrectly used in a generic sense for fibres from different plants, e.g., manila hemp (abaca) from Musa textilis; sisal hemp (sisal) from Agave sisalaiia; sunn hemp (sunn fibre) from Crotalaria-juncea.

Henequen

The fibre obtained from the leaf of Agava fourcroydes.ote.. This closely resembles sisal.

Henrietta

A fine, soft, lustrous fabric for dresses made from a fine silk warp and fine botany weft in a 1x2 twill.

Herringbone

1. A combination of twill weaves in which the direction of the twill is reversed (usually by drafting) to produce stripes resembling herring bones.
2. A cloth in which this weave is used.

Hessian

A plain cloth made from single yarns of approximately the same linear density in warp and weft, usually made from bast fibres, particularly jute.

Heterofilament

Also called Heterofil. See BICOMPONENT FIBERS.

Hexamethylenediamine

1 6 (H2N(CH2)6NH2). It is used in the polymerization reaction to form nylon 66.

High Density

A term to describe a material with heavier than normal weight per unit volume. (Also see DENSITY.) © 2001 Celanese Acetate LLC

High Modulus

A term that refers to a material with a higher than normal resistance to deformation. (Also see MODULUS.)

High Ph Finish

A finish basic in nature rather than acid or neutral that is applied to yarn or fiber.

High Tenacity

A term to describe a material with a higher than normal tensile strength. (Also see TENACITY.)

High volume instrumentation; HVI

An assembly of integrated semi-automatic electronic instruments for rapid determination of the fineness, length, impurity content and strength of samples of raw cotton.

High-bulk yarn

The increased bulk may be obtained by the use of bicomponent fibre and/ or by blending together, during yarn spinning, fibres of high and low potential shrinkage, e.g., high-bulk acrylic yarns. During subsequent hot and/or wet processing, the greater contraction of the high-shrinkage fibres causes the yarn to contract longitudinally and the low-shrinkage fibres to buckle thus increasing the bulkiness of the yarn.