MUMBAI, India, June 20 -- Intellectual Property India has published a patent application (202517020665 A) filed by Aquapak Ip Limited, Rubery, U.K., on March 7, for 'extruded polyvinyl alcohol fibres and fibrous products.'
Inventor(s) include Williams John; Griffiths Sian; Ashworth Robert; and Eaton Jack.
The application for the patent was published on June 20, under issue no. 25/2025.
According to the abstract released by the Intellectual Property India: "A method of manufacture of a nonwoven product comprising polyvinyl alcohol fibres the method comprising the steps of: providing a polyvinyl alcohol composition comprising homopolymeric polyvinyl alcohol having a degree of hydrolysis of 88% to 98% or greater; and a molecular weight in the range from 22 000 to 38 000; a plasticiser selected from the group consisting of: diglycerol triglycerol fructose ribose xylose D mannitol triacetin pentaerythritol dipentaerythritol methyl pentanediol 1 2 propanediol 1 4 butanediol 2 hydroxy 1 3 propanediol 3 methyl 1 3 butanediol 3 3 dimethyl 1 2 butanediol polyethylene glycol 300 polyethylene glycol 400 alkoxylated polyethylene glycol caprolactam tricyclic trimethylolpropane formal rosin esters erucamide and mixtures thereof; and a stabilizer selected from the group consisting of: sodium stearate potassium oleate sodium benzoate calcium stearate stearic acid dimethyl pentane diol propionic acid and mixtures thereof; melting the composition at a temperature from 190??C to 250??C; extruding the melted composition to form an extrudate; forming the extrudate into molten fibres; drawing the molten fibres to form individual molten fibres or bundles of molten fibres; and allowing the molten fibres to solidify to form solid fibres or bundles of solid fibres."
The patent application was internationally filed on Aug. 11, 2023, under International application No.PCT/EP2023/072322.
Disclaimer: Curated by HT Syndication.
