Zuiko Corporation

Masaki Nakakado

Satoshi Tanaka

Ikuo Tachibana

Hitoshi Satoh

Yuzo Ichiura

Takao Wada

Yoshio Tsujimoto

Toyoshi Umebayashi

Akihiro Miyoshi

Kiyofumi Inoue

Yoshinari Tanaka

An absorbent article having a plurality of granular particles placed between two liquid-permeable non-woven fabric sheets, the article including: a high-strength bonded portion formed in a loop-shaped pattern on the article such that the two non-woven fabric sheets are not separated even if the granular particles swell to thereby apply a separating force to a bonded position between the two non-woven fabric sheets; and a low-strength bonded portion formed in an inner area surrounded by the high-strength bonded portion such that the two non-woven fabric sheets are separated from each other at a bonded position when the granular particles swell to thereby apply a separating force to the bonded position between the two non-woven fabric sheets.

Ultrasonic bonding method for absorbent article, ultrasonic bonding device for absorbent article, and absorbent article

A method including: a step of forming depressions and protrusions on a first continuous sheet between a first roll and a second roll; a placement step of placing a plurality of granular particles in depressed portions of the depressions and protrusions of the first continuous sheet; a step of laying a second continuous sheet on the first continuous sheet, thereby forming a sandwich structure; and a step of bonding the two sheets with each other along protruding portions of the depressions and protrusions of the first continuous sheet, wherein a circumferential velocity of the second roll is greater than a circumferential velocity of the first roll.

Method and device for manufacturing composite sheet

A device including: a plurality of protruding portions of an anvil roll; an ultrasonically vibrating horn; a suction hole for drawing granular particles together with non-woven fabric sheets so as to carry the non-woven fabric sheets and to prevent the granular particles from being placed on the non-woven fabric sheets over the protruding portions; and a ridge extending along an outer circumference of the suction hole with a protruding height lower than a protruding height of the protruding portions.

Device for manufacturing absorbent article

A method includes steps of: carrying an air-permeable web while holding the first surface of the web on a carrying surface; dispensing powder particles onto the second surface of the web; drawing the first air from a plurality of suction holes in the carrying surface through the web, thereby holding the powder particles in a predetermined pattern on the second surface of the web; and giving at least a part of the first air flow components flowing in directions along the second surface of the web by means of an airflow deflector opposing the second surface of the web, thereby moving powder particles on non-suction areas between the suction holes on the web, thus arranging the powder particles in a predetermined pattern on the web.

Method and apparatus for arranging granular material

A method includes steps of carrying an air-permeable web while holding the first surface of the web on a carrying surface; dispensing powder particles onto the second surface of the web; and while drawing the first air from a plurality of suction holes in the carrying surface through the web, thereby holding the powder particles in a predetermined pattern on the second surface of the web, discharging the second air toward the web through a discharge hole open in a non-suction area, whereby the powder particles on non-suction areas are blown away by the second air, thus arranging the powder particles in a predetermined pattern on the web.

A rotation device includes an endless guide that defines a continuous circular path, a plurality of moving sections whose movement is guided by the endless guide, and a plurality of pads. Each pad is capable of carrying an article thereon, and each pad is mounted to a respective moving section. A method for producing a worn article using such a rotation device includes the following steps: (i) rotating a fixed pivot point about a first axis where a link connects the pivot point to the moving section; (ii) guiding a moving section along the path defined by the endless guide, where the endless guide has a second axis parallel to but offset from the first axis; (iii) receiving an article by the pad, where the rotating and guiding steps change a spacing interval between adjacent pads; and (iv) releasing the article from the pad after the spacing interval has changed.

Method and apparatus for producing wearing article

It includes: a carrying step of carrying a continuous member of a combined web in a direction perpendicular to a girth direction Y; a first folding step of folding a girth portion, while performing the carrying step, so that a non-skin-contact surfaceof the girth portionlies on a non-skin-contact surfaceof one of first and second side flaps; a second folding step of folding the first and second side flaps, while performing the carrying step and after the first folding step, so that skin-contact surfacesof the first and second side flaps lie on skin-contact surfacesof a back portion and a front portion; a cut-off step of cutting the continuous member into individual worn articles, after the second folding step; and a third folding step of folding the individual worn articles so that a first fastener memberprovided on a skin-contact surfaceof the girth portionlies on a second fastener memberprovided on a non-skin-contact surfaceof the other one of the first and second side flaps.

Method for manufacturing disposable worn article

The present invention relates to a new worn article, which gives a close fit and with which it is possible to reduce the production cost. A worn article of the present invention includes a main body portionincluding an absorbent coreand covering a front torso area, a crotch area and a rear torso area of a wearer, and a pair of side panels PL and PR attached to the main body portionand located between the front and rear torso areas when the worn article is worn. Each of the side panels PL and PR is stretchable in an around-the-torso direction X. At least a portion of the side panel PL and PR includes an elastic thread G sandwiched between at least two sheet-like materials Sand Sand is in a contracted state where the elastic thread is contracted, thus forming gathers.

Worn article and method for producing the same

A laminated stretchable sheet and a method for producing the same of the present invention include: a step of shrinking the continuous sheets Wand Win a width direction Y along folding lines WL extending in the flow direction of continuous sheets Wand Wthereby forming slack portions Wand Wthat can be stretched; a step of placing an elastic member F that can be stretched in the width direction Y on the continuous sheets Wand Wwhile the elastic member F is aligned with the slack portions Wand W; a step of attaching at least opposite end portions of the elastic member F in the width direction Y to the continuous sheets Wand W, during the placement, thereby forming a composite sheet; a step of stretching the slack portions Wand Wand the elastic member F in the width direction Y; and a step of attaching together the continuous sheets Wand Wand the elastic member F intermittently in an intermediate portion between the opposite end portions.

Laminated stretchable sheet and method for producing the same

A method for producing a disposable worn article and a laminated stretchable sheet of the present invention includes: a step of forming stretched elastic sheet pieces Ffrom a continuous elastic sheet; a step of carrying continuous webs Wa and Wb to be torso portions; a step of placing the elastic sheet pieces Fintermittently on the continuous webs Wa and Wb; a step of bonding opposite end portions of the elastic sheet pieces Fin the longitudinal direction to the continuous webs Wa and Wb by an adhesive, during the placement; an ultrasonic attachment step of forming a laminated stretchable sheet in an overlap portion between an intermediate portion between the opposite end portions of the elastic sheet piece Fand the continuous webs; a placement step of placing core portions C, each of which forms a crotch portion, between adjacent ones of the elastic sheet pieces F; and a step of cutting off the laminated stretchable sheet between adjacent ones of the core portions C.

Method for producing disposable worn article

A velocity-changing apparatus of the present invention includes: a drumfor transporting the continuous web Wat a transport velocity which is generally equal to a circumferential velocity V(&#x3b8;) of the drumwhile changing the circumferential velocity V(&#x3b8;) periodically at least once per one rotation of the drum; a movable memberdisposed upstream of the drumfor feeding the continuous web Wto the drum; and a cutterfor cutting, on the drum, the continuous web Wbeing transported at the transport velocity which is generally equal to the circumferential velocity V(&#x3b8;) of the drum. The movable membermoves according to the change of the circumferential velocity V(&#x3b8;) of the drumso that a feed velocity at which the continuous web Wis fed to the drumis generally equal to the transport velocity of the continuous web Wbeing transported by the drum

Velocity-changing apparatus for web

A method for producing a wearing article of the present invention includes the steps of: supplying an elastic member; stretching the elastic member; placing the stretched elastic member so that the elastic member spreads across a plurality of first webs divided in a transport direction; making a part of a second web loose in the transport direction while transporting the second web, thereby forming a loose portion; placing the first webs, on which the elastic member is disposed, on non-loose portions before and after the loose portion of the second web; and cutting the elastic member between adjacent first webs of the plurality of first webs.

A method for producing a disposable worn article of the present invention is directed to a method for producing a worn article including a core portioncovering the crotch of the wearer, and a torso portionthat fits to the torso of the wearer, wherein the torso portionincludes a back portionL and a front portionS. The method includes: a step of carrying a first web Wincluding a waist portionof a first back portionLand a second web Wincluding a waist portionof a second back portionLin the longitudinal direction Y of the webs; a step of forming a combined member by placing the core portionso as to bridge between the first and second webs Wand W; and a step of cutting the combined member so as to divide the combined member into a first group Gand a second group G

The present invention relates to a web processing device, comprising a plurality of pads Prevolving around a axis X, a cutterfor cutting a continuous web W, and a plurality of anvils Afor receiving the cutter. The pads Preceive the continuous web W, and the cuttercuts the continuous web W into a cut-off web Wtogether with the anvil Apositioned at a first relative level L. The pad Prevolves around the axis Xwhile changing an attitude of the pad Pby turning about a line extending from the first axis toward the pad P, thereby carrying the cut-off web Wwhile changing an attitude of the cut-off web W. When the pad Pchanges its attitude, the anvil Arelatively moves to a second relative level Lso as not to hinder the pad Pchanging its attitude.

Growing community of inventors

Osaka, Japan

Masaki Nakakado