Explanation Of Some Common Fiber Knowledge

Hemp fiber and Apocynum venetum fiber

at present

The application range of Apocynum venetum fiber is only inferior to ramie and linen. Because these two kinds of fibers have characteristics in their performance and style, their development prospects are good.

1. Hemp fiber.

There are two varieties of cannabis with early maturity and late maturity.

Most of the hemp are male and female, and the hemp fiber of male plant is good.

It is difficult to peel the phloem from the harvested hemp. It is necessary to remove a small amount of pectin before it can separate the phloem from the hemp bone. The process is called retting (which is also applied in the production of ramie). In fact, it is a semi degumming process.

In recent years, due to the development of biological degumming technology and the introduction of related silk and hemp technology, the consumption of hemp fiber has gradually increased. It has a similar "no itchy" style of flax, which is now gradually accepted by consumers.

Hemp fiber length and flax are similar, must also be made of process fiber (containing glue fiber bundle) spinning.

Hemp fiber is white and shiny, but because of the different methods of retting, the color difference is very large. It has light grey band, yellowish brown, and smoked with sulfuric acid.

The cross section of hemp single fiber is hollow polygonal, with a small number of nodules and longitudinal veins on the surface, without distortion and twirling.

2. Apocynum venetum fiber.

The whole degumming of Apocynum venetum fiber is white and glossy, and its degumming is similar to that of hemp.

The length of apocynum fiber is slightly lower than that of cotton, and other properties are worse than cotton. It is not ideal to treat it with traditional spinning method. The performance style of the apocynum fiber accords with the requirements of the application, but it has not yet formed a reasonable product development route.

Sisal fiber and hemp fiber

Also known as the West hemp, it belongs to the agave family, native to Central America.

In the world, sisal is mainly produced in Brazil and Tanzania, and sisal is mainly produced in southern provinces.

Sisal is a perennial herb, usually two years later, when the leaves grow to 80~100cm and 80~100 leaves are harvested.

Cutting is too early, fiber ratio is low, strength is poor, cutting too late, because of the drying of leaves and feet affects the quality.

Manila hemp, also known as Manila hemp, belongs to Musa. The main producing areas are Philippines and Ecuador. Taiwan and Hainan in China also have a long history of cultivation.

Banana leaf is the leaf sheath fiber of perennial herb. Its cell surface is smooth, its diameter is uniform, its vertical shape is round, and its cross section is irregular ovate or polygonal.

Jute fiber and kenaf fiber

Jute, the Tilia of the Tilia, is an annual herb, mainly in the Yangtze Valley and Southern China.

The genus Hibiscus of the genus mallow, an annual herb, can also be perennial in the tropics.

Jute's single fiber is a single cell, growing in the toughened part of the skin, and the initial cells differentiated from primary meristem and secondary meristem are elongated and thickened. Jute from emergence to maturity is about 100~140 days.

Jute's cross section is a bundle of polygonal fiber cells with acute angle and irregular polygon. The fiber bundle contains 5~30 root fibers. The single fiber is separated from the narrow interlayer and the middle cavity is round or oval.

The growth of fibroblasts can be divided into cell elongation stage, cell wall thickening stage and cell maturation stage, and the kenaf fiber cell is about 28~35 days from differentiation to maturity.

The cross-section shape of the single fiber of Kenaf is polygonal or round, and the cell size is different.