Surgery – Means and methods for collecting body fluids or waste material – Absorbent pad for external or internal application and...
Patent
1997-08-13
1999-07-13
Polutta, Mark O.
Surgery
Means and methods for collecting body fluids or waste material
Absorbent pad for external or internal application and...
604358, 6043852, 604392, A61F 1315
Patent
active
059219742
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
This invention relates to a disposable diaper, and more particularly to a disposable diaper capable of providing a comfortable feel of wear at the crotch portion and having a large liquid absorption capacity.
BACKGROUND ART
As disposable diapers for infants, incontinent persons and the like, shorts type diapers and flat type (development type) diapers have heretofore been used. Since each of these diapers has a thick absorbent member which is provided over the entire longitudinal area of the diaper including the crotch portion thereof, the absorbent member becomes bulky and many wrinkles are formed at the crotch portion of the diaper when the diaper is being worn. The result is that the comfort during wear is unfavorably degraded.
It can be contemplated as a means for improving the feel of wear of the diaper that, for example, the width at the crotch portion of the diaper is decreased to reduce the quantity of the absorbent member existing at the crotch portion. However, since the discharge of liquid is mostly concentrated at the crotch portion, this means is liable to degrade the liquid absorption, thereby causing liquid leakage from the crotch portion.
On the other hand, as means for realizing both the comfort during wear and large liquid absorption capacity at the crotch portion, disposable diapers as disclosed, for example, in Japanese Laid-Open Patent Applications 6-114084 and 6-63072 , etc. are known.
However, in the disposable diaper of Japanese Laid-Open Patent Application 6-114084 , the front and back bodies are separately made and therefore, the absorbent member is cut into a front body and a back body at the crotch portion. The result is that liquid is liable to leak from the crotch portion.
On the other hand, in the disposable diaper of Japanese Laid-Open Patent Application 6-63072, an auxiliary pad is provided on a discontinuous portion of the absorbent member at the crotch portion in order to prevent the leakage of liquid from the crotch portion. However, since the absorbent member is thick, the feel of wear cannot be improved.
It is, therefore, an object of the present invention to provide a disposable diaper which is comfortable during wear at the crotch portion and is improves in preventing liquid leakage from the crotch portion.
DISCLOSURE OF THE INVENTION
As a result of intensive study, the inventors of the present invention have found out that the above goal can be achieved by employing a so-called trunks-type configuration as a configuration of a diaper having a front body and a back body each comprising a body covering portion and a pair of leg covering portions and by making the absorbent member into a specific configuration at the crotch portion.
The present invention has been accomplished based on the above findings and achieved the above goal by providing a disposable diaper comprising a front body and a back body, the front and back bodies each having a liquid permeable topsheet, a liquid impermeable backsheet and a liquid retentive absorbent element interposed between the topsheet and the backsheet, the front and back bodies each comprising a body covering portion and a pair of leg covering portions extending downwardly from the body covering portion, wherein
said absorbent element of said front body and said absorbent element of said back body are continuous at the crotch portion of said diaper to form a unitary absorbent member, said absorbent member having a pair of wing portions extending laterally from opposite longitudinal side edges of said absorbent member, said wing portions being made to bend downwardly at the crotch portion of said diaper in such a manner that said wing portions are brought into contact with the inner crotch portion of a wearer when said diaper is in a wearing state.
Also, the present invention provides a disposable diaper having a liquid impermeable backsheet and a liquid retentive absorbent member wherein said backsheet comprises a body covering portion and a pair of leg covering portions extending downwardly from said body co
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Kao Corporation
Polutta Mark O.
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