发明名称 |
Ultrasonic bonding method for absorbent article, ultrasonic bonding device for absorbent article, and absorbent article |
摘要 |
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. |
申请公布号 |
US9517169(B2) |
申请公布日期 |
2016.12.13 |
申请号 |
US201314407550 |
申请日期 |
2013.06.13 |
申请人 |
ZUIKO CORPORATION |
发明人 |
Nakakado Masaki |
分类号 |
A61F13/15;A61F13/535;B29C65/08;B29C65/78;B29C65/00;A61F13/532;A61F13/539;B29L31/48;A61F13/53;A61F13/534;B29C65/76 |
主分类号 |
A61F13/15 |
代理机构 |
Renner, Otto, Boisselle & Sklar, LLP |
代理人 |
Renner, Otto, Boisselle & Sklar, LLP |
主权项 |
1. An ultrasonic bonding device for use with an absorbent article having a plurality of granular particles, capable of absorbing a body fluid to swell, between two liquid-permeable non-woven fabric sheets facing each other, the device comprising:
an anvil roll for carrying the two non-woven fabric sheets while the two non-woven fabric sheets are laid on each other; a plurality of protruding portions formed on the anvil roll so as to protrude outward in a radial direction of the anvil roll; a placement device for preventing the granular particles from being placed on the non-woven fabric sheets over the protruding portions; and a horn for ultrasonically vibrating so that the two non-woven fabric sheets are bonded together between the horn and the plurality of protruding portions, thereby forming bonded portions, the protruding portions comprising: at least one first protruding portion, which is away from the horn by a first distance when the first protruding portion comes closest to the horn, for forming at least one high-strength bonded portion such that the non-woven fabric sheets are unseparated from each other at the bonded portion by a peeling force urging the non-woven fabric sheets to peel off each other; and at least one second protruding portion, of which a second distance to the horn when the second protruding portion comes closest to the horn is greater than the first distance, for forming at least one low-strength bonded portion such that the non-woven fabric sheets are separatable from each other at the bonded portion by the peeling force urging the non-woven fabric sheets to peel off each other, wherein a difference between the first distance and the second distance is 3 μm to 60 μm. |
地址 |
Osaka JP |