Foam backed fiber cement

a fiber cement and foam backing technology, applied in the field of fiber cement exterior building materials, can solve the problems of higher water permeability, asbestos and cellulose fiber cement materials have less water resistan
US20060068188A1Inactive Publication Date: 2006-03-30PLYCEM USA
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Patent Information

Authority / Receiving Office
US · United States
Current Assignee / Owner
PLYCEM USA
Publication Date
2006-03-30
Estimated Expiration
Not applicable · inactive patent

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Abstract

A product comprises a fiber cement substrate, and a porous, closed cell foam joined to a substantial portion of a major surface of the fiber cement substrate.
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Description

FIELD OF THE INVENTION

[0001] The present invention relates to building materials generally, and more specifically to fiber cement exterior building materials. BACKGROUND

[0002] For more than 100 years, asbestos fiber cement materials were prevalent in such building products as roofing. In the 1980's, as the dangers of asbestos became known, replacement building materials were sought.

[0003] One proposed replacement for asbestos has been unbleached cellulose fibers, with about 35% cement, and about 55% fine ground silica, such as described in U.S. Pat. No. 6,030,447, the entirety of which is hereby incorporated by reference. This product is autoclave (steam heat and pressure) cured. It is generally made on a Hatschek machine. Cellulose fiber cement building products have surged in popularity in recent years. A variety of products are available in fiber-cement, including siding, shakes, and panels. Fiber cement products are strong and durable. Advantages of fiber cement products incl...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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