Application of adhesive to a non-planar surface
AssigneeMcNeil-PPC, Inc.
InventorAnthony C. Ng
Life of this patent
Estimating the term…
Abstract
A disposable panty shield comprising a thin, highly absorbent pad having a body-contacting surface, an absorbent layer, a liquid barrier, an adhesive layer, and a release layer to protect the positioning adhesive prior to use wherein the panty shield has been densified by fusing all pad layers together in a manner such that the interstitial space between the individual fibers in the densified areas is not sufficient to readily allow fluid to flow through, and the liquid barrier has a contoured surface. The adhesive layer is attached to the liquid barrier such that the adhesive follows the contour of the liquid barrier.
Claims2
An apparatus for applying an adhesive layer to an absorbent product comprising:
- a) a sealing station having a pattern roll, an anvil roll, and a transfer roll, each having an axis of rotation, the axes of rotation being parallel to each other;
- wherein
- i) the pattern roll provided with means for maintaining the temperature of the pattern roll at a temperature of from about 90.degree. to about 400.degree. F., the pattern roll has a protuberance extending radially therefrom;
- ii) wherein the pattern roll rotates in a direction opposite the anvil roll and the transfer roll, said anvil roll provided with means for maintaning the temperature of from about 90.degree. F. to about 150.degree. F.;
- iii) the pattern roll is spaced apart from the anvil roll such that the protuberances on the pattern roll do not come into contact with the anvil roll;
- iv) the pattern roll and anvil roll are arranged and configured to form densified and depressed fluid barriers in an absorbent product;
- v) the transfer roll has an elastomeric surface;
- vi) the transfer roll and pattern roll are arranged and configured to receive and compress therebetween the absorbent product having the densified and depressed fluid barriers and an adhesive-coated release paper;
- and
- vii) the transfer roll is rollingly engaged with the protuberance of the pattern roll;
- and
- b) a calender arranged and configured to receive and further compress the absorbent product and release paper.
Dependencies are inferred from the claim text.