Output conveyor belt of a crosslapper

{
  "publication_number": "US10745201B2",
  "country": "US",
  "kind": "B2",
  "title": "Output conveyor belt of a crosslapper",
  "abstract": "The output conveyor belt of a crosslapper for holding and conveying layers of card web laid to form a nonwoven is configured as an endless slatted belt with a plurality of transverse slats. The transverse slats comprise support surfaces for the nonwoven, which are formed by fibers or bristles projecting from the transverse slats.",
  "claims": [
    "1. An output conveyor belt of a crosslapper for holding and conveying layers of card web laid to form a nonwoven, wherein the output conveyor belt is configured as an endless slatted belt with a plurality of transverse slats, wherein the transverse slats comprise support surfaces for the nonwoven, and wherein at least certain areas of the support surfaces of at least some of the transverse slats are formed by fibers projecting from the transverse slats; wherein the transverse slats are covered at least partially by a covering, which comprises projecting fibers and the covering is formed of pile fabric with projecting fibers.",
    "2. The output conveyor belt according to claim 1 wherein the covering comprises a backing layer, from which the fibers or bristles project.",
    "3. The output conveyor belt according to claim 2 wherein the fibers project from the backing layer over a distance in the range of 0.5-5 mm.",
    "4. The output conveyor belt according to claim 1 wherein the pile fabric is a velvet or a velour.",
    "5. The output conveyor belt according to claim 2 wherein the fibers are applied in the form of fiber flocking to the backing layer.",
    "6. The output conveyor belt according to claim 2 wherein the backing layer comprises at least one adhesive layer.",
    "7. The output conveyor belt according to claim 1 wherein each transverse slat is covered by the covering.",
    "8. The output conveyor belt according to claim 1 wherein every second or every third transverse slat is covered by the covering.",
    "9. The output conveyor belt according to claim 1 wherein the transverse slats are equipped with the fibers or bristles over an entire width of the output conveyor belt.",
    "10. The output conveyor belt according to claim 1 wherein the transverse slats comprise a covering in outer areas of the output conveyor belt, whereas the transverse slats are not covered by the covering in a middle area.",
    "11. The output conveyor belt according to claim 10 wherein the middle area not provided with the covering extends over no more than 70% of the width of the output conveyor belt.",
    "12. The output conveyor belt according to claim 10 wherein the middle area not provided with the covering extends over no more than 60% of the width of the output conveyor belt.",
    "13. The output conveyor belt according to claim 10 wherein the middle area not provided with the covering extends over no more than 50% of the width of the output conveyor belt."
  ],
  "description_excerpt": "The invention relates to an output conveyor belt of a crosslapper. In the production of nonwovens in a crosslapper, several layers of a card web entering the crosslapper are laid on top of each other on an output conveyor belt movable in the direction perpendicular to the direction of the laying carriage. Because the movements of the laying carriage and those of the output conveyor belt are perpendicular to each other, the edges of the individual layers of the card web in the laid nonwoven on the output conveyor belt are slightly slanted. Overall, several layers of card web are laid down on top of each other in zigzag fashion, as a result of which the nonwoven consisting of these several layers of card web is formed.\n\nAs a result of varying requirements, it can be desirable for the card web to be intentionally stretched upstream from the crosslapper or as it passes through the crosslapper. For example, this is advantageous as a way of laying thinner sections of the card web in the area of the side edges of the laid nonwoven, which leads to a more uniform nonwoven after the solidification step. Nevertheless, because of the elastically stored strain of the card web, a certain level of intrinsic stress in the material results from the deformations. These intrinsic stresses can result in the distortion of the laid nonwoven; they can, for example, cause the most recently laid layer of card web to contract elastically, which has the effect of reducing the lay-down width.",
  "cpc": [
    "B65G 15/52",
    "B65G 17/08",
    "B65G 45/18",
    "D01G 25/00",
    "D04H 1/74",
    "D21H 5/26"
  ],
  "ipc": [
    "B65G 15/52",
    "B65G 17/08",
    "B65G 45/18",
    "D04H 1/74",
    "D21H 27/00"
  ],
  "assignees": [
    "Oskar Dilo Maschinenfabrik KG"
  ],
  "inventors": [
    "Johann Philipp Dilo"
  ],
  "filing_date": "2019-08-29",
  "publication_date": "2020-08-18",
  "grant_date": "2020-08-18",
  "priority_date": "2018-08-29",
  "application_number": "US-201916554758-A",
  "family_id": "63449245",
  "cited_by_count": 0,
  "citations": [
    "DE76457C",
    "US1554838A",
    "US2303386A",
    "DE1292549B",
    "US3139975A",
    "SU825707A1",
    "US4356587A",
    "US4741941A",
    "DE29518917U1",
    "US20050115808A1",
    "US20130270075A1",
    "US20150183584A1",
    "US20170088358A1"
  ]
}