Method for producing shaped elastic ears in disposable absorbent articles
An elastic ear, non-elastic technology, used in absorbent pads, chemical instruments and methods, layered products, etc., can solve problems such as large scraps, waste, waste, etc.
Inactive Publication Date: 2006-08-16
3M INNOVATIVE PROPERTIES CO
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- Description
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- Application Information
AI Technical Summary
Problems solved by technology
This way of cutting the ear portions out of the larger absorbent article body creates a lot of offcuts, which is wasteful and needs to be discarded
Method used
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[0033] The first embodiment of the present invention is shown in FIG. 1 . At least one continuous length of elastic fabric material 2 is provided from a reel or the like. The elastic fabric may be any suitable flat elastic fabric, including film-like elastics or nonwoven elastics. In preferred embodiments, the elastic fabric material is an elastic film, preferably a composite elastic film, such as disclosed in US Patent Nos. 5,501,675; 6,462,708, 5,354,507 or 5,344,691. These references teach various types of multilayer composite elastic laminates having at least one elastic layer and one or two relatively inelastic facing or outer layers. The non-elastic layer can be stretched beyond its own elastic limit (ie, permanently set), and the laminate can then recover in the direction opposite to the stretched direction due to the relatively high restoring force of the elastic layer. The non-elastic layer provides a reliable attachment surface for adhering to the nonwoven layer wi...
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Abstract
There is provided a process for forming profiled elastic laminates suitable for forming profiled elastic ear portions. The process comprises the steps of providing a continuous length of at least one elastic web material having a first width and a continuous length of a first extensible nonelastic web having a second width. The extensible web is extensible in at least the width dimension. The at least one elastic web material and the first extensible nonelastic web are joined to form a first laminate. The first laminate is cut into at least two adjacent continuous lengths of at least two nested profiled laminates. The nested profiled laminates each have at least one profiled edge. Adjacent profiled edges of adjacent profiled laminates are substantial negatives of each other. The adjacent profiled laminates are then physically separated from each other. A continuous lengths of second nonelastic webs having a third width are joined to one or more of the profiled laminates to form at least one second continuous laminate. The second continuous laminate is collected in a roll and then further cut into sets of matched profiled elastic ear portions.
Description
technical field [0001] The present invention relates to a method of making a shaped elastic ear portion laminate from a continuous web of elastic and inelastic material. The shaped elastic ear portion laminates are particularly suitable for use in disposable absorbent articles such as diapers and adult incontinence articles. Background technique [0002] Disposable absorbent articles have traditionally employed fastening systems with functional locking features, such as hook and loop fasteners or pressure sensitive adhesive films, to fit the wearer. Traditionally, the above-mentioned locking components are arranged on the absorbent article, or arranged on the side of the absorbent article in the form of small tabs. Complementary elements cooperating with the locking part are usually also provided. Supplementary elements are typically located in the main body of the disposable garment. The tabs are usually attached to so-called ear portions which are cut from the side regi...
Claims
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IPC IPC(8): B32B37/00A61F13/56A61F13/49A61F5/44A61F13/15
CPCA61F13/15756A61F13/15699Y10T156/1087Y10T156/1077Y10T156/1084Y10T156/1052A61F13/56
Inventor 利·E·伍德
Owner 3M INNOVATIVE PROPERTIES CO