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US 2004/0175535 A1Published application
Recycled polyvinyl butyral compositions and uses
AssigneeMohawk Brands, Inc.
InventorMichael E. Bell
Life of this patent
Estimating the term…
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AssigneeMohawk Brands, Inc.
InventorMichael E. Bell
Estimating the term…
By utilizing recovered polyvinyl butyral in the production of carpet backcoatings, the amount of waste polyvinyl butyral that is landfilled or otherwise disposed of is significantly reduced, as is the need for manufacturing polyvinyl butyral. The recovered polyvinyl butyral is size reduced and then utilized by itself or with other ingredients to provide a composite used in the manufacture of a useful product (like carpet backing), and then the composite material is used to make the useful product (such as carpet backing, which is used as a primary or secondary backcoating in the manufacture of new carpeting or as a precoat, main back coat or combination precoat/main back coat in the manufacture of new carpet tile). In addition, waste carpet may optionally be used with the recovered polyvinyl butyral as a filler material; thus, further reducing the amount of waste that is landfilled or incinerated.
A carpet backcoating composition comprising polyvinyl butyral recovered from used materials or from manufacturing processes, wherein the recovered polyvinyl butyral is greater than 0% and up to about 40-60% by weight based on the total weight of the carpet.
A carpet tile precoat composition, main backcoat composition or combined precoat/main backcoat composition comprising polyvinyl butyral recovered from used materials or from manufacturing processes.
A method of preparing a backcoating for carpet comprising:
A method of preparing a precoat, main backcoat or combination precoat/main backcoat for carpet tile comprising:
Carpeting having a face, primary backing, primary backcoating and at least one secondary backcoating, and wherein at least one of said primary and secondary backcoatings contains recycled polyvinyl butyral.
Carpet tile having a face and at least one of a precoat and a main backcoat, and wherein at least one of said precoat and said main backcoat contains recycled polyvinyl butyral.
Dependencies are inferred from the claim text.