Unicharm Corporation

Hiroshi Ujimoto

Hironori Nomura

Toshinori Yamamoto

Hiroki Yamamoto

Migaku Suzuki

Masamitsu Yamamoto

Yoshikazu Tanaka

Taiji Shimakawa

Junji Shinohara

Shigetoyo Kobayashi

Hiromi Aono

The present invention generally resides in method and apparatus for intermittently applying pieces of elastic band severed into a predetermined length onto a moving continuous web at predetermined positions. The apparatus comprising elastic band transfer means including a plurality of independently rotatable rotor elements coaxially supported in rotatable fashion and carrying on respective arc-shaped outer surfaces suction members wherein the respective rotor elements carrying the respective suction members are adapted to be rotated along common circumferential path and the respective rotor elements are coupled to a drive wheel eccentrically located relative to a rotational center of the respective rotor elements and adapted to be rotated at a constant speed by a rotatable slider crank mechanism; suction distributor means for the respective suction members, adapted to operate synchronously with rotation of the drive wheel; means to feed continuous elastic band tangentially to the circumferential path of the respective suction members; means intermittently cooperating with one of the respective suction members periodically advanced by the elastic band transfer means to a predetermined position to sever the continuous elastic band; and web feeding means located in opposition to an end position of transport of the severed piece of elastic band along the circumferential path so that the piece of elastic band may be effectively transferred onto the web. This apparatus may further comprise means by which at least one ends of the respective suction members are pivotally supported by the respective rotor elements in laterally displaceable fashion so that the one ends are laterally displaced as the respective rotor elements rotate.

Method and apparatus for applying elastic band onto moving web

In a method for making disposable absorbent garments, elastic flaps which are brought in close contact around the wearer's legs are formed separately from a topsheet and a backsheet and bonded to the topsheet which is being transferred to an assembly line before the topsheet is placed upon the backsheet.

Method for making disposable absorbent garments

An apparatus for modifying and joining a sheet of foam to a non-elastic component that includes slitting the foam to form a plurality of openings, forming the slit foam into a U shaped slack condition and joining surfaces of the foam sheet to a non-elastic component adhering the two together.

Apparatus for providing sanitary goods with attachment means with

In the manufacture of disposable clothing such as diapers, elastic waistbands are attached to respective longitudinal ends of diapers while stretched in transversely extended condition. The diapers are arranged in end-to-end relation as a continuous of diaper precursors which is fed past a transfer station. A continuous sheet of elastic is coated on one side with adhesive except adjacent longitudinal edges thereof and the leading end is repeatedly severed transversely into successive individual elastic members which are then spaced apart and progressively stretched into extended condition while being fed one-by-one to the transfer station where the coated side is applied by a transfer drum to the web thereby transferring the elastic members at predetermined spacings to the web. The elastic members are then severed into two pieces while also severing through the web in a single cutting action to define adjacent ends of diapers with respective pieces of elastic members attached in extended condition.

Apparatus for attaching elastic member to wearable articles

Growing community of inventors

Kawanoe, Japan

Hiroshi Ujimoto