Claims
- 1. A method for making disposable diapers having leg opening areas comprising the steps of: advancing a fluff pad-equipped first web along a generally horizontal first path, advancing under tension second and third webs along a second path generally parallel to said first path and into a nip provided by a pair of rolls, applying adhesive to said second web prior to entry thereof into said nip, feeding a plurality of continuous elastic strands into said nip into contact with said adhesive, pressing said strands against aid adhesive equipped web just prior to said second web entering said nip, and shifting said strands laterally about leg opening areas in said second and third webs and partially wrapping said second and third webs about one of said rolls, and uniting thereafter said second and third webs with said first web, said steps including controlling the position of said strands closely adjacent said nip by passing said strands through eyelets of flat, resilient member means.
- 2. Apparatus for making disposable diaper comprising:
- a frame defining a generally horizontal first path,
- means on said frame for advancing a fluff pad-equipped first web along said first path,
- a pair of rolls providing a nip mounted on said frame aligned with said first path and spaced therefrom,
- a drum mounted on said frame in the space between said first path and said pair of rolls, one of said pair of rolls being positioned closely adjacent said drum,
- means for advancing under tension along a second path second and third webs into the nip of said rolls, means in said second path for continuously equipping at least one of said webs with adhesive,
- means for feeding a continuous elastic strand into said nip between said second and third webs and into contact with said continuous adhesive whereby said second and third webs are united and with said strand being united to said second and third webs,
- said strand feeding means including guide means mounted on said frame closely adjacent said nip for shifting said strand laterally, and
- roll means on said frame in said first path for cooperating with said drum for uniting said first web with the already united second and third webs,
- said pair of rolls being positioned relative to said first path so as to have said united second and third webs travel in partial wrapping engagement with said one of said pair of rolls and in partial wrapping engagement with said drum until said first web is united with said already united second and third webs so as to maintain said elastic strand under tension while traveling between said nip and the union of said three webs taking place between said drum and said roll means.
- 3. The apparatus of claim 1 in which said adhesive equipping means is provided for each of said second and third webs.
- 4. Apparatus according to claim 1 in which said guide means includes a pair of spring members each having a plurality of eyelets therein for individually receiving a plurality of strands.
- 5. Apparatus for making disposable diaper comprising: a frame defining a generally horizontal first path, means on said frame for advancing a fluff pad-equipped first web along said horizontal path, a pair of rolls providing a nip mounted on said frame aligned with said first path and spaced therefrom, means for advancing under tension along a second path second and third webs into the nip of said rolls, means in said second path for equipping at least one of said webs with adhesive, means for feeding a continuous elastic strand into said nip between said second and third webs and into contact with said adhesive whereby said second and third webs are united and with said strand being united to said second and third webs, said strand feeding means including guide means mounted on said frame closely adjacent said nip for shifting said strand laterally, and means in said first path for uniting said first web with the already united second and third webs, said pair of rolls being positioned relative to said first path so as to have said united second and third webs travel in partial wrapping engagement with one of said pair of rolls, said guide means being generally flat and mounted to project into said nip to press said strand against said adhesive equipped web, said guide means being equipped with an eyelet through which said strand passes in wiping engagement with said guide means.
- 6. Apparatus for making disposable diapers comprising: a frame defining a generally horizontal path, means on said frame for advancing a fluff pad-equipped first web along said horizontal path, a pair of rolls providing a nip on said frame above and aligned with said path, means for advancing under tension along a second path second and third webs toward said pair of rolls, means on said frame for applying adhesive to at least one of said second and third webs prior to entry thereof into said nip, means for feeding a plurality of continuous elastic strands into said nip between said second and third webs, said strand feeding means including guide means transversely movably mounted on said frame for shifting said strands laterally, said guide means being mounted to press said strands against said adhesive equipped web, said guide means including a generally flat, resilient member positioned closely adjacent said nip, drum means for uniting said second and third webs with said first web, said pair of rolls being positioned adjacent said drum means for maintaining said second and third webs under tension until engagement with said first web, said apparatus including a pair of said generally flat, resilient members, one for each of said second and third webs, each said member having an eyelet and a portion adjacent said eyelet and positioned closely to one of said webs, said strand passing through said eyelet in wiping engagement with said portion to remove any adhesive thereon.
- 7. Apparatus for making disposable diaper comprising: a frame (14) defining a generally horizontal first path (P.sub.1), means (24, 25) on said frame for advancing a fluff pad-equipped first web (27) along said first path, a pair of rolls (15, 16) providing a nip (17) mounted on said frame aligned with said first path and spaced therefrom, means for advancing along a second path (P.sub.2) in said frame second and third webs (18, 19) into the nip (17) of said rolls, means (21) in said second path for equipping at least one of said webs with adhesive, means for feeding a continuous elastic strand (20) into said nip between said second and third webs are united and with said strand being united to said second and third webs characterized by, said strand feeding means (22, 23) including guide means mounted on said frame closely adjacent said nip for shifting said strand laterally, and means (24, 25) in said first path for uniting said first web with the already united second and third webs, said pair of rolls being positioned relative to said first path so as to have said united second and third webs (26) travel in partial wrapping engagement with one (16) of said pairs of rolls, said guide means being generally flat and mounted to project into said nip to press said strand against said adhesive equipped web, said guide means being equipped with an eyelet through which said strand passes in wiping engagement with said guide means.
- 8. Apparatus for making disposable diaper comprising: a frame (14) defining a generally horizontal first path (P.sub.1), means (24, 25) on said frame for advancing a fluff pad-equipped first web (27) along said first path, a pair of rolls (15, 16) providing a nip (17) mounted on said frame aligned with said first path and spaced therefrom, means for advancing along a second path (P.sub.2) in said frame second and third webs (18, 19) into the nip (17) of said rolls, means (21) in said second path for equipping at least one of said webs with adhesive, means for feeding a continuous elastic strand (20) into said nip between said second and third webs and into contact with said adhesive whereby said second and third webs are united and with said strand being united to said second and third webs characterized by, said strand feeding means (22, 23) including guide means mounted on said frame closely adjacent said nip for shifting said strand laterally, and means (24, 25) in said first path for uniting said first web with the already united second and third webs, said pair of rolls being positioned relative to said first path so as to have said united second and third webs (26) travel in partial wrapping engagement with one (16) of said pair of rolls, said guide means including a relatively elongated member having a first end portion, a transition portion and a second end portion, an eyelet in said second end portion, mounting means in said first end portion, said transition means being angled to dispose said first and second end portions in different planes.
- 9. The apparatus of claim 8 in which there are two guide means, each having a plurality of eyelets for directing a plurality of strands between said second and third webs.
- 10. Apparatus for making disposable diaper comprising: a frame (14) defining a generally horizontal first path (P.sub.2), means (24, 25) on said frame for advancing a fluff pad-equipped first web (27) along said first path, a pair of rolls (15, 16) providing a nip (17) mounted on said frame aligned with said first path and spaced therefrom, means for advancing along a second path (P.sub.2) in said frame second and third webs (18, 19) into the nip (17) of said rolls, means (21) in said second path for equipping at least one of said webs with adhesive, means for feeding a continuous elastic strand (20) into said nip between said second and third webs and into contact with said adhesive whereby said second and third webs are united and with said strand being united to said second and third webs characterized by, said strand feeding means (22, 23) including guide means mounted on said frame closely adjacent said nip for shifting said strand laterally, and means (24, 25) in said first path for uniting said first web with the already united second and third webs, said pair of rolls being positioned relative to said first path so as to have said united second and third webs (26) travel in partial wrapping engagement with one (16) of said pair of rolls, said strand feeding means including a subframe mounted on said frame (14), cylinder means (53) interconnecting said frame and subframe to pivot said subframe and withdraw said guide means (23) from said nip (17).
- 11. The apparatus of claim 10 in which said frame is equipped with a cross shaft (60) pivotally mounted in the side frames (14a, 14b) of said frame, an L-shaped arm (59) fixed to said cross shaft and carrying one of said rolls (15) at one end thereof, second cylinder means (56) interconnected between said frame and the other end of said L-shaped arm; and means (61, 62, 63) associated with said cross shaft (60) and other roll (16) for pivoting said other roll away from said uniting mean (26).
Parent Case Info
This application is a continuation-in-part of application Ser. No. 984,468, filed Dec. 2, 1992, now abandoned.
US Referenced Citations (15)
Foreign Referenced Citations (7)
Number |
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0475419 |
Mar 1992 |
EPX |
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Jan 1992 |
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Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
984468 |
Dec 1992 |
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