MUMBAI, India, June 20 -- Intellectual Property India has published a patent application (202517020695 A) filed by Aquapak Ip Limited, Rubery, U.K., on March 7, for 'polyvinyl alcohol fibres and meltblown 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 comprises 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 weight average molecular weight in the range from 14 000 to 22 000; 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 an optional 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 200??C to 230??C to form a molten polymer; wherein the molten polymer is meltblown by the steps of: extrusion of the molten polymer through a die having a spinneret to form molten fibres of the polymer; the fibres being blown from the die and attenuated by a flow of heated air to form attenuated molten fibres the attenuated fibres being deposited on a moving collector and allowed to solidify to form a melt blown nonwoven fibre web."
The patent application was internationally filed on Aug. 11, 2023, under International application No.PCT/EP2023/072333.
Disclaimer: Curated by HT Syndication.
