Methods of bonding materials, especially materials used in absorbent articles

Abstract

Methods of bonding materials used in the manufacture of articles, including, but not limited to, absorbent articles such as sanitary napkins, pantiliners, tampons, absorbent interlabial devices, diapers, incontinence devices, wipes, and the like are disclosed. There are numerous aspects of the disclosed methods. In one aspect, the method involves bonding through incompatible materials during the process of making a composite structure comprising several materials. In another aspect, improvements are made that allow the method to be used to bond through relatively thick materials (e.g., materials having a thickness of greater than or equal to about 4 mm). In another aspect, the methods are provided with the ability to create a virtually unlimited number of bonding patterns in the materials to be bonded. In still another aspect, the methods of bonding utilize a compression step to improve bond formation. In still another aspect, methods of bonding that utilize a step of slitting a material through which the bonds are made are disclosed.

Description

[0001] The applicant is Procter & Gamble, the application date is November 25, 1998, the application number is 98813318.0, and the name is a divisional application of the invention of the method of joining materials, especially materials used in hygroscopic products. field of invention [0002] The present invention generally relates to methods of joining materials used in absorbent articles, although the methods described herein may be used to join materials used in other forms of articles. In a preferred embodiment, the present invention relates to a process for making absorbent articles such as sanitary napkins, pantiliners, tampons, absorbent interlabial articles, diapers, incontinence articles and the like. Background technique [0003] Absorbent products, such as sanitary napkins, panty liners, tampons, interlabial absorbent products, disposable diapers, incontinence products, and bandages, are designed to absorb and...

AI Technical Summary

Problems solved by technology

However, the method of making porous polymeric materials described in the Haq patent requires the addition of thermoplastic

This complicates the process of making this porous polymer material

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