Abstract:
The present invention relates to a fibre insulation material for the manufacture of a non-woven fibre batt comprising primary fibre components of a portion of 50% to 90% cellulose fibres; 2% to 20% synthetic fibres, said synthetic fibres being crimped fibres having a length between 12 to 75 mm; and 2 to 20% bi-component fibres comprising a core and an outer sheathing, said outer sheathing having a lower melting point than the core. Hereby, an inexpensive and voluminous fibre product is achieved having good spring elastic properties as well as good sound and heat insulating properties.
Abstract:
The present invention concerns a method of manufacturing a filtration material for hygienic or sanitary use and such filtration material, which comprises an air-laid non-woven fibrous mat comprising bi-component fibres and a portion of granulate material comprising sodium chloride. Hereby, at least a major portion of the granulate material grains are adhered to the surfaces of the bi-component fibres.
Abstract:
The present invention concerns an air-laid non-woven fibre product comprising recycled material and manufactured by a dry forming process, said product comprising: a first portion of up to 99 %dust material, where the dust material is preferably recovered dust from manufacturing or the like of fibrous textile material, preferably cotton textiles, and a second portion at least 1% bi-component fibres having a length between 2-75 mm, preferably 2-25 mm in length.
Abstract:
The present invention concerns an air-laid non-woven fibre product manufactured by a dry forming process, said product comprising a first portion of up to 98% recycled shredded material, where the shredded material is a mixture of shredded fabric material fibres from automotive tires or the like and residues of rubber and other components from the shredded tires, and a second portion of 1 - 30 %, preferably 1 - 5 %, bi-component fibres having a length between 2 - 50 mm, preferably 2-6 mm in length.
Abstract:
The invention regards a forming box for use in dry-forming a mat of fibrous material, said forming box comprising a housing with an open bottom for providing direct access of the fibres onto an underlying forming wire and a vacuum box underneath said forming wire,at least one inlet for supplying fibre material into the inside of the housing, a number of spike rollers are provided in at least one row in the housing between the fibre inlet and the housing bottom,wherein a screen is provided adjacent said spike rollers, said screen comprising a plurality of slats, wherein each slat is rotatable.
Abstract:
The present invention concerns a forming box for use in dry forming of a mat of fibrous material, said forming box comprising a housing with an open bottom for providing direct access fort the fibres onto an underlying forming wire and a vacuum box underneath said forming wire; an inlet for supplying fibre material into the inside of the housing; a number of spike rollers are provided in two rows in the housing between the fibre inlet and the housing bottom, wherein an endless belt screen is provided inside the housing having an upper run between two rows of spike rollers and a lower run closer to the open bottom of the forming box. The endless belt screen which runs between two rows of spike rollers and the lower part of the forming box, ensures an even distribution of the fibres just as fibre lumps or oversized fibres are prevented from beinglaid down on the forming wire and retained on the belt screen in the forming box and transported away from the lower portion of the forming box and returned to the spike rollers for further disintegration. In a forming box according to the invention, using an endless belt screen as the sieve or fibre screen is self-cleaning since the oversized fibres are retained on one upper side of the lower run of the endless belt screen and released on lower side of the upper run of the endless belt screen because of the vacuum underneath the forming box and the forming wire.