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  Embossed multi-ply fibrous structure product and process for making sameUSPTO Application #: 20060005916Title: Embossed multi-ply fibrous structure product and process for making same Abstract: Multi-ply fibrous structure products, more specifically embossed multi-ply fibrous structure products and methods for making same are provided. (end of abstract) Agent: The Procter & Gamble Company Intellectual Property Division - Cincinnati, OH, US Inventors: Michael Gomer Stelljes, Christopher Scott Kraus, George Vincent Wegele, Kevin Benson McNeil USPTO Applicaton #: 20060005916 - Class: 156209000 (USPTO) Related Patent Categories: Adhesive Bonding And Miscellaneous Chemical Manufacture, Methods, Surface Bonding And/or Assembly Therefor, With Permanent Bending Or Reshaping Or Surface Deformation Of Self Sustaining Lamina, Running Or Continuous Length Work, Surface Deformation Only (e.g., Embossing) The Patent Description & Claims data below is from USPTO Patent Application 20060005916. Brief Patent Description - Full Patent Description - Patent Application Claims
CROSS REFERENCE TO RELATED APPLICATIONS [0001] This application is a divisional application of U.S. application Ser. No. 10/673,659, filed Sep. 29, 2003. FIELD OF THE INVENTION [0002] The present invention relates to multi-ply fibrous structure products, more specifically embossed multi-ply fibrous structure products and methods for making same. BACKGROUND OF THE INVENTION [0003] Conventional embossed multi-ply fibrous structure products having embossment heights of 1000 .mu.m or greater are known in the art. However, such conventional embossed multi-ply fibrous structure products contained bonded, densified embossment sites. Such conventional embossed multi-ply fibrous structure products exhibited product property deficiencies, especially with respect to the wet burst strength. Such conventional embossed multi-ply fibrous structure products exhibited a wet burst strength of 303 g or less. In addition, such conventional embossed multi-ply fibrous structure products suffered from problems associated with the adhesive between the plies moving when embossed prior to achieving acceptable plybond strength. Tensile strengths in such products were also typically lower than acceptable. [0004] Prior art attempts to overcome the prior art's product property deficiencies included applying excess adhesive to the plies of the fibrous structure prior to embossing and then marrying the plies to form a multi-ply fibrous structure product. The adhesive covered greater than 40% of the surface area of the plies. The relatively large amount of adhesive was required to get acceptable plybond strength in the product. [0005] Accordingly, there is a need for an embossed multi-ply fibrous structure product wherein the plies of the multi-ply fibrous structure product were bonded together by an adhesive over less than 40% of the surface area of the plies. Further, there is a need for an embossed multi-ply fibrous structure product that comprises embossments having an embossment height of greater than 1000 .mu.m and a wet burst strength of at least 305 g and/or a plybond strength of at least 4 g/in. SUMMARY OF THE INVENTION [0006] The present invention fulfills the need described above by providing an embossed multi-ply fibrous structure product. [0007] In one aspect of the present invention, an embossed multi-ply fibrous structure product comprising two or more plies of fibrous structure bonded together along adjacent surfaces of the two or more plies by an adhesive to form a bond area, wherein the bond area is less than about 30% of the bonded adjacent surfaces, wherein the product comprises two faces, wherein one face comprises non-adhesively bonded embossed sites and the other face comprises adhesively bonded non-embossed sites, and wherein the fibrous structure product exhibits an embossment height of at least about 1000 .mu.m, is provided. [0008] In another aspect of the present invention, an embossed multi-ply fibrous structure product comprising two or more plies of fibrous structure bonded together at a plybond strength of at least about 4 g/in along adjacent surfaces of the two or more plies by an adhesive to form a bond area, wherein the bond area is less than about 30% of the bonded adjacent surfaces, wherein the product exhibits an embossment height of at least about 1000 .mu.m, and a wet burst of at least about 305 g, is provided. [0009] In still another aspect of the present invention, an embossed multi-ply fibrous structure product comprising a first face and a second face, wherein the first face comprises non-adhesively bonded embossed sites and the second face comprises adhesively bonded non-embossed sites, is provided. [0010] In even another aspect of the present invention, an embossed multi-ply fibrous structure product comprising a first face and a second face, wherein the first face comprises non-densified embossed sites and the second face comprises densified non-embossed sites, is provided. [0011] In yet another aspect of the present invention, a method for making an embossed multi-ply fibrous structure product comprising the steps of: [0012] a) adhesively binding two or more plies of fibrous structure together to form a multi-ply fibrous structure by applying an adhesive to at least one surface of the two or more plies, wherein the adhesive is applied to less than about 30% of at least one of the two or more plies surfaces; [0013] b) embossing the multi-ply fibrous structure such that the multi-ply fibrous structure exhibits an embossment height of at least about 1000 .mu.m to form the embossed multi-ply fibrous structure product, is provided. [0014] In still yet another aspect of the present invention, a method for making an embossed multi-ply fibrous structure product comprising the steps of: [0015] a) providing a first ply of fibrous structure; [0016] b) providing a second ply of fibrous structure; [0017] c) applying an adhesive to a surface of the first ply of fibrous structure such that the adhesive contacts less than about 30% of the surface area of the first ply of fibrous structure; [0018] d) combining and marrying the first and second plies of fibrous structure along adjacent surfaces of the first and second plies of fibrous structure such that the adhesive bonds the two plies together to form a multi-ply fibrous structure exhibiting a plybond strength of at least about 4 g/in; and [0019] e) embossing the multi-ply fibrous structure such that an embossed multi-ply fibrous structure product exhibiting an embossment height of at least 1000 .mu.m is formed, is provided. [0020] Accordingly, the present invention provides an embossed multi-ply fibrous structure product and methods for making embossed multi-ply fibrous structure products. BRIEF DESCRIPTION OF THE DRAWINGS [0021] FIG. 1A is a fragmentary side sectional view of one embodiment of an embossed multi-ply fibrous structure product according to the present invention. [0022] FIG. 1B is a fragmentary side sectional view of another embodiment of an embossed multi-ply fibrous structure product according to the present invention. [0023] FIG. 1C is a fragmentary side sectional view of another embodiment of an embossed multi-ply fibrous structure product according to the present invention. [0024] FIG. 2 is a schematic side elevational view of one embodiment of an apparatus used for making an embossed multi-ply fibrous structure product according to the present invention. [0025] FIG. 3 is an enlarged fragmentary side elevational view of the apparatus shown in FIG. 2. [0026] FIG. 4 is a top plan view of a fibrous structure comprising an adhesive in pattern form. Continue reading... Full patent description for Embossed multi-ply fibrous structure product and process for making same Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Embossed multi-ply fibrous structure product and process for making same patent application. ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. Each week you receive an email with patent applications related to your keywords. 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