摘要:
The present invention is concerned with a process for forming a very well defined pattern of particulate material in a composite material comprising a web material and particulate absorbent material. The present invention relates also to a method for determining the equipment design and process parameter for such a process. In a particular application, the present invention provides a process for preparing liquid absorbent structures, such as may be useful for disposable absorbent articles.
摘要:
The present invention is method for forming a sandwich structure having a pattern of particulate material enveloped between a carrier material and a cover material. The method allows accurate forming of pre-determined pattern at high production speed. Such a method is particularly useful in the manufacture of disposable absorbent articles, such as baby diapers.
摘要:
The present invention provides a coating method and a coating device that can both prevent the occurrence of streaks and nonuniform application. A coating device comprises an approximately cylindrical bar arranged to come into contact with a traveling web, and a feed device that feeds coating solution to the entry side of the web relative to the bar. Spiral grooves inclined at an angle of 20 degrees to 70 degrees (both inclusive) with respect to a plane orthogonal to the central axis of the bar, and smooth portions with which the web comes into contact at a percentage of 20% or more are formed on the surface of the bar.
摘要:
An apparatus for transferring adhesive material to portions of filter elements that are displaced relative to the apparatus includes a dispenser from which heated adhesive material is discharged, a transfer arrangement that receives discharged adhesive material and transfers the discharged adhesive material to the portions of the elements as they are displaced, and a cooling arrangement. The cooling arrangement cooperates with the transfer arrangement to cool the discharged adhesive material while the adhesive material is carried by the transfer arrangement to the adhesive material receiving portions of the elements. A process by which adhesive material is transferred to adhesive material receiving portions of the filter elements, as well as an air line panel filter produced by that process, are also discussed.
摘要:
A method of selectively applying pressure-sensitive adhesive to a nonwoven web and thereby forming a cleaning sheet having adhesive free peaks and adhesive containing valleys includes coating an adhesive transfer roll with adhesive, transferring a portion of the adhesive to raised regions of a female pattern forming roll, and transferring the adhesive from the raised regions of the female pattern forming roll to the web. An apparatus for selectively applying pressure-sensitive adhesive to a nonwoven web and forming a cleaning sheet is also described.
摘要:
A device for moistening an envelope flap includes a reservoir for holding a moistening fluid and an applicator mounted above the reservoir for applying the moistening fluid to the envelope flap. The moistening device also includes a fluid transfer member that is mounted for rotation about a horizontal axis to transfer moistening fluid from the reservoir to the applicator while the transfer member rotates.
摘要:
The invention concerns an installation for machining (1) a continuous material (2), comprising a device for applying fluids, for example plastic substances and/or fluid adhesives, in the form of a surface coat at least partly on the continuous material (2) directly applied or by transfer. Such installations are particularly used for laminating a continuous material and one or more substrates. The invention is characterized in that the application device (A) mounted in the deflecting and/or pressing roll (4) is an interchangeable modular unit.
摘要:
A method and apparatus is disclosed for gravure coating a liquid reactive with the atmosphere onto a web. The gravure apparatus comprises an engraved gravure cylinder, an impression roller backing the web and pressing it onto the gravure cylinder to form a nip, a curtain or jet formation means to wet the surface of the gravure cylinder, and a doctor blade means for wiping excess coating liquid from the surface of the gravure cylinder prior to the nip. A shroud encompassing the gravure cylinder and the curtain or jet formation means creates a first zone between the nip and a partitioning baffle extending from the shroud, a second zone between the partitioning baffle and the doctor blade means, and a third zone between the doctor blade means and the nip. A gas non-reactive with the coating liquid is supplied to each zone by a gas distribution means such that the reaction rate of the coating liquid with the atmosphere is greatly reduced and the curtain or jet is not disrupted. In a particularly preferred embodiment, the gravure apparatus and shroud are enclosed by solid walls and doors.
摘要:
A material applicator assembly 10 which includes a rotor member 12 having a plurality of dispenser apertures 20 and a deformable material application ring 23 around the outer periphery of the rotor member 12. The assembly 10 being rotatably coupled to a centrally mounted tubular member 40. Member 40 having at least one aperture through which an adhesive material 45 is forced into each of the plurality of apertures 20 as the rotor member 12 is rotated about member 40, thereby injecting the adhesive material 45 into the application ring 23 to deposit the adhesive material 45 upon components 60 having varying cross-sectional shapes.
摘要:
Sheets to be coated with water-based coating material, for example a primer and a low adhesion backsize, are supplied from a feeder (1), in end-to-end overlapping relationship, to a dual coater (3) in which the sheets are coated individually on both sides. A sheet inserter (2) is provided, upstream of the dual coater, to insert sheets from a second supply into the sheets from the feeder (1). The dual coated sheets are dried as individual sheets or as a pseudo-web of overlapped sheets. The sheets are then overlapped, unless previously overlapped, and the direction of overlap changed, if necessary, to provide the trailing edge of each sheet on top of the leading edge of each succeeding sheet. The overlapped sheets are conveyed through an adhesive transfer station (7) where stripes (236) of at least partially dried adhesive are coated onto the dual coated sheets from a transfer belt (71).