| 摘要 |
<p>1506036 Tampon - making machines PROCTER & GAMBLE CO 20 June 1975 [1 July 1974] 26391/75 Heading A5R [Also in Divisions B5, B8 and Dl] Apparatus for the production of tampons in the form of a tubular sack containing an absorptive aggregate includes a rotatable turret 22 and a drive 11 for rotating it, the turret having a number of pleating and sealing stations 23 located at substantially equally - spaced intervals about its periphery, each station (Fig. 9) including pleating heads 70, 71 movable between an open and a closed position, and sealing jaws 82 83 also movable between an open and a closed position, and opening and closing means for sequentially closing and opening the pleating heads and the sealing jaws during each cycle of rotation of the turret, whereby a continuous length of flexible tubing may be fed to the turret for engagement at spaced intervals by successive pleating and sealing stations and the tube pleated and sealed at predetermined spaced intervals to form individual sacks to act as tampons. The apparatus includes means for introducing contents in the form of an absorptive aggregate into the sacks as they are formed. The turret 22 comprises a hollow rotating shaft 64 fixed to an upper platform 65 which supports the pleating and sealing stations 23 and to a lower platform 66. Pleating head 71 is fixed to one of a series of radially-disposed mounting blocks 67 bolted to a platform 65 and is fixed relative to the shaft 64. Head 70 is pivoted on an arm 73 extending from block 67. The sealing jaws 82, 83 are mounted alongside the pleating heads and have heating elements 90, 91 adjacent their sealing surfaces 92, 93 for sealing the tubular material after its passagethrough the pleating heads. The action of both the pleating heads and the sealing jaws are effected by piston-cylinder arrangements driven by air coming from shaft 64 via valves 103, 106 to one or the other end of cylinders 74, 95, thus driving the pistons. The continuous length of flexible tubing coated with stripes of adhesive at positions intended for sealing is produced from a web 14, (Fig. 1) of material supplied from a roll 13. Web 14 is drawn through a pair of driven pull rolls on roll stand 15 to an adhesive printer 16 which applies transverse stripes of adhesive to the undersurface of the web, and then passes around a drying drum 17, through a set of driven rolls on roll stand 18 around a guide roll 19 to a hollow mandrel assembly where it is tubed. The means for introducing absorptive aggregate into the sacks being formed comprises a hopper 21 for introducing charges of the aggregate into the interior of the mandrel and an air-jet at the end of the mandrel distant from the turret 22 to move the charge into the sack after the first seal has been made. The web 14 passes around the outside of the mandrel and is sealed along its longitudinal edge by means of further adhesive and pressure rolls.</p> |
