Patent GB-1028891-A (GB)
Title: Treatment of textile material with adhesive
Inventor: GOY RONALD STANSFIELD
IPC: D06B3/20
Filed: 1962-07-11
Abstract: An adhesive, or a solid substance chemically reactable with another substance to produce the desired adhesive, is applied to a textile material i.e. textile fibres, filaments, yarns, cards, felts, knitted, woven nonwoven, or cord fabric, by passing the textile material which is at atmospheric temperature through a bed of solid particles of the adhesive or solid substance maintained in fluid suspension by the passage of a gas e.g. air or nitrogen, through the bed until the required amount of adhesive is deposited on the textile material.  The bed of solid particles may be formed wholly by the adhesive or solid substance, or in part by the adhesive or solid substance and in part by sand, ballotini, aluminium spheres or other inert particulate material.  The textile material coated with the solid substance may have a substance or substances reactable therewith to produce an adhesive subsequently brought into contact therewith.  The solid substance may be a substance which generates isocyanate groups on heating. A cord fabric may have applied thereto a solid substance which generates an aldehyde on heating e.g. paraformaldehyde, trioxymethylene, or hexamethoxymethylene diamine. The cord fabric after application of the aldehyde generating substance may be coated with a rubber composition containing a phenol e.g. resorcinol, to be reacted with the aldehyde.  The coated cord fabric may be used as a reinforcement for pneumatic tyres.  A tackifying resin may be incorporated in the bed of solid particles. The adhesive may be heated quickly e.g. by one or more infra red heaters, to an elevated temperature after application to the textile material.  As shown, an assembly of textile cords 1, formed by drawing a number of identical cords 2 from bobbins 3, is passed into a bed 5 of particles in trough 6 which has a porous tile 8 and aperture 9 through which air is blown to fluidize the particles.  The assembly, thus coated with particles, is passed through the nip of calender bowls 14, 15 which apply a coating of rubber composition 16 thereto.  The particles may be of paraformaldehyde and the rubber composition contains resorcinol.ALSO:An adhesive, or a solid substance chemically reactable with another substance to produce the desired adhesive, is applied to a textile material i.e. fibres, filaments, yarns and cards, by passing the textile material which is at atmospheric temperature through a bed of solid particles of the adhesive or solid substance maintained in fluid suspension by the passage of a gas e.g. air or nitrogen, through the bed until the required amount of adhesive is deposited on the textile material. The bed of solid particles may be formed wholly by the adhesive or solid substance, or in part by the adhesive or solid substance and in part by sand, ballotini, aluminium spheres or other inert particulate material. The textile material coated with the solid substance may have a substance or substances reactable therewith to produce an adhesive subsequently brought into contact therewith.  The solid substance may be a substance which generates isocyanate groups on heating.  A textile material may have applied thereto a solid substance which generates an aldehyde on heating e.g. paraformaldehyde, trioxymethylene, or hexamethoxymethylene diamine. The textile material after application of the aldehyde generating substance may be coated with a rubber composition containing a phenol e.g. resorcinol, to be reacted with the aldehyde.  The coated textile material may be used as a reinforcement for pneumatic tyres.  A tackifying resin may be incorporated in the bed of solid particles. The adhesive may be heated quickly e.g. by one or more infra red heaters to an elevated temperature after application to the textile material. As shown, an assembly of textile cords 1, formed by drawing a number of identical cords 2 from bobbins 3, is passed into a bed 5 of particles in trough 6 which has a porous tile 8 and aperture 9 through which air is blown to fluidise the particles.  The assembly, thus coated with particles, is passed through the nip of calendar bowls 14, 15 which apply a coating of rubber composition 16 thereto. The particles may be of paraformaldehyde and the rubber composition contains resorcinol.