natural, soft, healthy fibers... Hemp yarns
100% Hemp yarns |
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| Specification | Composition | Count |
| 100% Hemp ringspun yarns | 100% Hemp short fiber 100% Hemp long fiber |
Nm3/1 |
Nm5/1 |
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Nm7/1 |
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Nm8.5/1 |
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Nm10/1 |
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Nm16/1 |
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Nm18/1 |
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Nm24/1 L |
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Nm36/1 L |
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Nm48/1 L |
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Nm60/1 L |
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Hemp cotton yarn |
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| Specification | Composition | Count |
| Hemp cotton ringspun yarns | 55% Hemp / 45% cotton 55% Hemp / 45% Organic cotton (35% Hemp / 65% Organic cotton 20% Hemp / 80% Organic cotton) | |
Ne7/1 |
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Ne11/1 |
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Ne16/1 |
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Ne21/1 |
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Ne30/1 |
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Ne40/1 |
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Ne45/1 |
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Ne50/1 |
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Ne60/1 |
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Hemp Yarns Specifications :
| Count (Nm) | 16/1 | 24/1 | 36/1 |
| Material | hemp | hemp | hemp |
| Blend | 100% hemp | 100% hemp | 100% hemp |
| Count CV% | 4 | 4 | 4 |
| Strength CV% | 25 | 15 | 18 |
| TPM | 485 | 376 | 493 |
| RKM (cn/tex) | 13 | 28 | 36 |
| Uster U% | 36.2 | 30 | 32.5 |
| Thin (-50)/km | 3500 | 2500 | 3200 |
| Thick (+50)/km | 2200 | 1700 | 2100 |
| Neps(+200)/km | 9500 | 2700 | 3900 |
Hemp center cavity is bigger, takes approximately 1/2-1/3 of the cross section area, and along the fiber of there are many crevasses and holes across to the center activity, therefore the hemp has a great performance on moisture absorption and ventilation. Like the hemp canvas, the moisture absorption rate of it is 7.43mg/min high, and the moisture dissipation rate, 12.6mg/min. Hemp fiber has a porous nature allowing it to breath, therefore it keeps you cool in the summer, and in the winter it traps air into the fiber keeping you warm.
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Nature and organic fibers become more and more popular these years. Most of people come to realize that nature ,soft and healthy are the most important things of the textile. Cotton was known of their naturalness, but look at the comparison as below: Comparison to cotton Hemp fiber is more insulative than cotton fiber. Also due to the natural fibre properties, the breaking elongation of hemp is very low (3,5%) compared to cotton (8,5%).
Characters of Hemp:
| Hemp parameters compraed with cotton: | Cotton |
Hemp single fiber |
| Fiber length (mm) | 20-30 |
15-25 |
| Fiber diameter (um) | 15-19 |
22-25 |
| Fiber fineness (tex) | 0.1-0.4 |
0.25-0.52 |
| specific weight (g/cm-3) | 1.52 |
1.47 |
| Tensile strength (N /tex-1) | 0.15-0.55 |
0.53-0.62 |
| Breaking elongation (100%) | 6-10 |
3-4 |
How to make hemp into clothes:
a. RETTING
b. DECORTICATION
c. WASHING
d. COMBING
e. SPINNING
f. KNITTING OR WEAVING
Hemp fiber and yarns
Hemp is a bast fiber plant similar to flax, kenaf, jute and ramie. Long slender primary fibers on the outer portion of the stalk characterize bast fiber plants. The primary hemp fiber is attached to the core fiber by pectin - a glue-like soluble gelatinous carbohydrate. The primary hemp fibers can be used for composites, reinforcements and specilaty pulp and paper. The wood-like core hemp fiber can be used for animal bedding, garden mulch, fuel and an assortment of building materials. Hemp also produces an oil seed that contains between 25 - 35 % oil by weight, which is high in essential fatty acids considered to be necessary to maintain health.
Hemp is an annual plant that grows from seed. It can be grown on a range of soils, but tends to grow best on land that produces high yields of corn. The soil must be well drained, rich in nitrogen, and non-acidic. Hemp requires limited pesticides because is grows so quickly and attracts few pests.
To harvest hemp for fiber specialized cutting equipment is required, however equipment as simple as a side bar mower is suitable. Once the hemp fiber crop is cut, the stalks are allowed to cure (rett) in the field to loosen the primary hemp fiber from the core fibre. While the stalks lay in the field, most of the nutrients extracted by the plant are returned to the soil as the leaves decompose. The hemp stalks are turned and then baled with existing hay harvesting equipment, using either large round or square bales. When planted for hemp fiber, the yields range from 2 to 5 tons of dry stalks per acre.
Hemp is a distinct variety of the plant species cannabis sativa L. Due to the similar leaf shape, hemp is frequently confused with marijuana. Although both plants are from the species cannabis, hemp contains virtually no THC (delta-9-tetrahydrocannabinol), the active ingredient in marijuana. Hemp cannot be used as a drug because it produces virtually no THC (less than one per cent), where marijuana produces between 5 - 20 % THC.
Hemp yarns dyeing note:
改善麻纤维染色性能的途径World sources:
CHINA is the largest exporter of hemp paper and textiles. The fabrics are of excellent quality.
CANADA started to license research crops in 1994 on an experimental basis. In addition to crops for fibre, one seed crop was experimentally licensed in 1995. Many acres were planted in 1997. Licenses for commercial agriculture saw thousands of acres planted in 1998. 30,000 acres planted in 1999. In 2000, due to speculative investing, 12,250 acres were sown. In 2001 ninety-two farmers grew 3,250 acres. A number of Canadian farmers are now growing organically certified hemp crops.
HUNGARY is rebuilding their hemp industry, and is one of the biggest exporters of hemp cordage, rugs and hemp fabric to the U.S. They also export hemp seed and hemp paper. Fiberboard is also made.
JAPAN has a religious tradition requiring the Emperor wear hemp garments, so there is a small plot maintained for the imperial family only. They have a thriving retail market selling a variety of hemp products.
POLAND currently grows hemp for fabric and cordage and manufactures hemp particle board. They have demonstrated the benefits of using hemp to cleanse soils contaminated by heavy metals.
ROMANIA was the largest commercial producer of hemp in Europe in the late 80's and early 90's. Total acreage in 1993 was 40,000 acres. Some of it is exported to Hungary for processing. They also export to Western Europe and the United States .
USA The United States granted the first hemp permit in over 40 years to Hawaii for an experimental quarter acre plot in 1999. The license has been renewed since. Importers and manufacturers have thrived using imported raw materials. Twenty-two states in the United States have introduced legislation. VT, HI, ND, MT, MN, IL, VA, NM, CA, AR, KY, MD, WV have passed legislation for support, research, or cultivation. The National Conference of State Legislators has endorsed industrial hemp for years.
