According to an aspect of the present invention, there is provided a method for producing a nonwoven fabric, the method comprising the steps of providing fibres comprising 10-100 wt-% of bast fibres, the bast fibres having at least one angle of at least 20°, and the bast fibres having an average fibre length of 10-60 mm; carding the fibres and forming a web of fibres on a wire support; hydroentangling the formed web by using at least a first and a second hydroentangling unit, wherein a hydroentanglement energy in the first hydroentangling unit is lower than the hydroentanglement energy in the second hydroentangling unit; dewatering the hydroentangled web; and drying the dewatered web at a temperature of 105-125° C.

Disclosed is a method for the manufacture of fibrous yarn including the steps, where an aqueous suspension including fibers and at least one rheology modifier is provided, followed by directing the suspension through at least one nozzle, to form at least one yarn, and then dewatering the yarn.

The present invention is directed to a method of increasing the brightness of non-wood fibers and nonwoven fabric fabrics produced by the method. In one aspect, the method includes forming a mixture of non-wood fibers and exposing the mixture to a brightening agent to produce brightened fibers. The brightening agent is oxygen gas, peracetic acid, a peroxide compound, or a combination thereof. The brightened fibers have a brightness greater than the fibers of the mixture before exposure as measured by MacBeth UV-C standard.

The present invention is directed to a method of increasing the brightness of non-wood fibers and nonwoven fabric fabrics produced by the method. In one aspect, the method includes forming a mixture of non-wood fibers and exposing the mixture to a brightening agent to produce brightened fibers. The brightening agent is oxygen gas, peracetic acid, a peroxide compound, or a combination thereof. The brightened fibers have a brightness greater than the fibers of the mixture before exposure as measured by MacBeth UV-C standard.

Disclosed is a method for the manufacture of fibrous yarn including the steps, where an aqueous suspension including fibers and at least one rheology modifier is provided, followed by directing the suspension through at least one nozzle, to form at least one yarn, and then dewatering the yarn.

The present invention is directed to a method of increasing the brightness of non-wood fibers and nonwoven fabric fabrics produced by the method. In one aspect, the method includes forming a mixture of non-wood fibers and exposing the mixture to a brightening agent to produce brightened fibers. The brightening agent is oxygen gas, peracetic acid, a peroxide compound, or a combination thereof. The brightened fibers have a brightness greater than the fibers of the mixture before exposure as measured by MacBeth UV-C standard.

A decortication system includes a feeder configured to convey unoriented fiber-bearing plant stalks in a bulk mass and a decorticator assembly comprising a multi-stage decorticator assembly. The decorticator assembly includes at least a first stage decorticator and a second stage decorticator arranged in series with one another. The first stage decorticator comprises a ripper that is configured to separate stalks from the bulk mass delivered by the feeder and to meter movement of stalks away from the ripper. The second stage decorticator is located downstream of the ripper and further decorticates the stalks to produce fiber and hurd that are separated from one another. It may comprise a roller-roller breaker assembly comprising plurality of roller-breaker assemblies located in series with one another. A third stage decorticator may be located downstream of the second stage decorticator and may comprise a second roller-breaker assembly.

An elastic thread yarn comprising linen and/or rami and/or hemp and an elastic thread, with a thread made of an elastomeric material, and a substantially inextensible yarn made of linen and/or rami and/or hemp helically wound about the elastomeric core at a predetermined number of windings per length unit of elasticized yarn, wherein, for each metric count Nm, the number of windings substantially inextensible yarn of the elasticized yarn, is set between two values indicated by two curves (12, 13) which can be expressed according to exponential laws, for example, with the same exponent, i.e. according to equations of the form T=K N.sup.0, 327 where K is 20 and 50, respectively. In particular, an intermediate curve 11 is such that, by choosing for a given metric count a number of windings proximate to curve 11, this best feature balance is obtained. In an exemplary embodiment, the core comprises a bare elastic thread, i.e. an elastic thread that is not coated by other fibers. In another exemplary embodiment, the core comprises an elastic thread coated with a natural fiber as cotton or viscose, or with a combination thereof. The elastic thread yarn according to the invention provides elasticized fabrics containing linen and/or on rami, which has, in particular, a better surface regularity than well-known elasticized fabrics comprising linen, and which is comparable with the regularity of the elasticized fabrics comprising natural fibers such as cotton, wool, etc. and synthetic fibers, and also allows using ramie and hemp yarns to make elastic thread yarns and fabrics, for example, for making cloth items.

Described herein are spun yarns, core spun yarns, and fabrics such as denim fabrics made thereof that contain recycled cotton fibers and recycled para-aramid fibers. The combination of fibers in the yarns and fabrics provide desirable properties such as increased tear strength, breaking strength, and abrasion resistance compared to yarns and fabrics made of 100 wt % cotton.

A paintable cloth includes a woven fabric including plant fibers, especially flax, jute, ramie and/or sisal fibers, the woven fabric additionally being coated with a finish.