US 2006/0185135 A1Published application

Process and apparatus to attach elastic members to disposable wearing article being continuously manufactured

AssigneeUni-Charm Corporation

InventorsHiroki Yamamoto, Akihide Ninomiya

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Abstract

First continuous web as a component of disposable wearing article to be continuously manufactured is fed in a machine direction and first continuous elastic members are fed via guide means adapted to oscillate the elastic members in a cross direction crossing the machine direction and attached thereto. Each of the guide means comprises a first servomotor having a rotary shaft adapted to repeat reversal of its rotational direction, a first arm connected directly with the rotary shaft and extending in a direction crossing the rotary shaft so that the first arm swings around the rotary shaft as the rotary shaft rotates and a first feed member adapted to direct the first continuous elastic members toward guide means formed on the first arm.

Claims14

Dependent claims

A process comprising the steps of feeding at least a single continuous web in a machine direction as a component member of a disposable wearing article being continuously manufactured, feeding continuous elastic members toward at least one surface of said:

web while said continuous elastic members are oscillated in a cross direction relative to said machine direction, and attaching said continuous elastic members in a stretched state to said one surface in a accordance with a desired layout, said process further comprising the steps of:
feeding said web to a nip between a pair of press rolls substantially being in contact with each other and adapted to rotate in said machine direction around respective axes extending parallel to each other in said cross direction;
and feeding said elastic members from upstream of said pair of press rolls to the nip between said press rolls via guide means adapted to oscillate said elastic members in said cross direction and attaching said elastic members to said web by means of an adhesive;
wherein each of said guide means comprises:
a motor having a rotary shaft extending in a direction crossing said axes and adapted to repeat reversal of its rotational direction;
an arm connected directly with said rotary shaft and extending in a direction crossing said rotary shaft, said arm being formed on its distal end with guide means adapted for passage of said elastic members, and said arm being adapted to swing around said rotary shaft as said rotary shaft rotates;
and
at least one feed men located upstream of said rotary shaft as viewed in said machine direction and adapted to direct said elastic members toward said guide means;
and
wherein, in the course of running from said feed member to said pair of press rolls via said guide means, said elastic members are attached to said web while said elastic members are oscillated in said cross direction by said arm connected directly with said rotary shaft so as to repeat reversal of its swinging direction.

7 more elements

An apparatus for feeding at least a single continuous web in a machine direction as a component member of a disposable wearing article being continuously manufactured, feeding continuous elastic members toward at least one surface of said web while said continuous elastic members are oscillated in a cross direction relative to said machine direction, and attaching said continuous elastic members in a stretched state to said one surface in accordance with a desired layout, said apparatus comprising:

a pair of press rolls extending parallel to each other and substantially contacting each other, said pair of press rolls rotating in said machine direction around respective axes extending in said cross direction so as to feed said web in said machine direction, and a guide means located upstream of said pair of said press rolls as viewed in said machine direction to oscillate said elastic members in said cross direction;
wherein each of said guide means comprises;
a motor having a rotary shaft extending in a direction crossing said axes arid adapted to repeat reversal of its rotational direction;
an aim connected directly with said rotary shaft and extending in a direction crossing said rotary shaft, said arm being formed on its distal end with said guide means adapted for passage of said elastic members, and said arm being adapted to swing around said rotary shaft as said rotary shaft rotates;
and at least one feed member located upstream of said rotary shaft as viewed in said machine direction and adapted to direct said elastic members toward said guide means.

2 more elements

Dependencies are inferred from the claim text.