Abstract:
The present disclosure relates to methods for making elastomeric laminates that may be used as components of absorbent articles. In particular, discrete mechanical bonds are applied to a first substrate and a second substrate to secure elastic strands therebetween, wherein the discrete bonds are arranged intermittently along the machine direction. During the bonding process, heat and pressure are applied to the first substrate and the second substrate such that malleable materials of the first and second substrates deform to completely surround an outer perimeter of a discrete length of the stretched elastic strand. After removing the heat and pressure from the first and second substrates, the malleable materials harden to define a bond conforming with a cross sectional shape defined by the outer perimeter of the stretched elastic strand.
Abstract:
The present invention relates to an apparatus for making an absorbent structure for an absorbent article, the apparatus comprising: a printing roll comprising a plurality of cavities in the outer surface of the printing roll, each cavity having cavity sides which are formed by the walls of the cavity within the outer surface of the printing roll and a cavity base, and each cavity has a volume within the outer surface of the printing roll defined by the cavity sides and the cavity base, and wherein the plurality of cavities comprises cavities having different volume.
Abstract:
An apparatus is disclosed for coating a surface that is movable relative to the apparatus with a layer of metallic particles or particles having a metal-like appearance and reflectivity, the particles adhering more strongly to the surface than to one another. The apparatus comprises at least one spray head 1401 for directly or indirectly applying to the surface 12 a fluid stream within which the particles are suspended, a housing 1403 surrounding the spray head(s) 1401 and defining an interior plenum 1406 for confining the fluid stream, the housing having a rim 1404 adjacent the surface that is configured to prevent egress of particles from a sealing gap defined between the rim of the housing and the surface to be coated, and a suction source connected to the housing to extract from the plenum the sprayed fluid and particles suspended in the sprayed fluid. In operation, the suction source extracts substantially all particles that are not in direct contact with the surface, so as to leave only a substantially single particle layer adhering to the surface on exiting the apparatus.
Abstract:
There is disclosed a method of printing onto the surface of a substrate, which method comprises i) coating a donor surface (12) with a monolayer of particles, ii) treating the substrate surface (80) to render at least selected regions tacky, and iii) contacting the substrate surface with the donor surface to cause particles to transfer from the donor surface only to the tacky regions of the substrate surface. After printing on a substrate (20), the donor surface (12) returns to the coating station (14) where the continuity of the monolayer is restored by recovering with fresh particles the regions of the donor surface exposed by the transfer of particles to the substrate.
Abstract:
Apparatus to make decorations (20) on a prefabricated water-proofing bitumen-mix membrane (12), wherein the decorations (20) are made by depositing solid particles (13), in the form of flakes, grains, sand or grit, suitable to adhere to at least one surface of said prefabricated water-proofing bitumen-mix membrane (12). The apparatus comprises at least one transfer member (11) provided with a support surface (19) suitable to receive, support and transfer the solid particles (13) toward the surface to be enhanced of the prefabricated water-proofing bitumen-mix membrane (12). The support surface (19) is provided with a plurality of cavities (18) suitable to receive the solid particles (13). The cavities (18) are made inside at least one surface portion (21) of the support surface (19) and the surface portion (21), essentially reproducing the shape and sizes of at least one of the decorations (20).
Abstract:
A microreplication apparatus forms a microreplicated article including a web (422) , a first patterned roll (460) , first nip roll (454) and first coating die (456) disposed adjacent the web substrate first side and the web substrate is disposed between the first patterned roll and first nip roll. The first nip roll touches the web substrate second side and the first patterned roll touches the web substrate first side. A second patterned roll (474) , second nip roll and second coating die (464) , disposed adjacent the web substrate second side and the web substrate is disposed between the second patterned roll and second nip roll . The second nip roll touches the web substrate first side and the second patterned roll (474) touches the web substrate second side. A drive assembly rotates the first patterned roll and the second patterned roll maintaining a continuous registration within 100 micrometers.
Abstract:
A method of applying an additive (4) to selected regions (56) of a web (4) includes the steps of applying the additive to the raised regions (26) of a patterned roll (10) having an outer surface comprising raised regions and recessed regions (39), providing a flat roll (12) having a smooth outer surface arranged in rotatable contact with the patterned roll, and conveying the web of material between the patterned roll and the flat roll, thereby to transfer the additive to selected regions of the web. An apparatus for selectively applying an additive to a web is also described.
Abstract:
The invention relates to a roller provided for use in coating machines. The inventive roller is provided for directly or indirectly applying a liquid or pasty medium to one or both sides of a running web of material, especially made of paper or paperboard, and comprises a core (15) whose outer casing is provided with a covering (3a) made of an elastomeric material. According to the invention, the covering (3a) is designed such that it can be compressed.