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1. 发明公开

EP0974709A1 Products useful as roof shingles and a process for making such products 审中-公开
标题翻译： Produkte anwendbar als Dacheindeckung und Verfahren zur Herstellung
公开(公告)号：EP0974709A1
公开(公告)日：2000-01-26
申请号：EP99650064.1
申请日：1999-07-19
申请人： Nelson, Larry , Smith, Lloyd
发明人： Nelson, Larry , Blalock, Christopher
IPC分类号： E04D5/06 , C08L17/00 , C08L23/08 , C08L23/16
CPC分类号： E04D1/22 , C08L19/003 , C08L21/00 , C08L23/0815 , C08L23/16 , E04D1/10 , C08L2666/06 , C08L2666/04
摘要： The present invention relates to low-cost, efficiently-manufactured, polymer-based products useful as roofing shingles and similar products. The inventive shingles are weatherproof, inexpensive to manufacture and durable, particularly as contrasted with conventional shingles in areas of the country subject to hail damage. The invention also includes a method of making such shingle products. In a preferred embodiment, products of this invention use rubber material as the polymer base in combination with specific types of polyolefins. The rubber material can be most efficiently provided by the use of crumb rubber particles from spent automobile tires and other recycled rubber debris which are readily available and of very low cost. The products will have an average life far greater than that of current commercial roofing shingles, which are made using fiberglass or asphalt.
The products of the instant invention are produced by extrusion as a mixture of materials, which product and its materials can be summarized as follows as a roofing shingle product which comprises:

a. one or more side-branched polyolefins as an elastomer;
b. optionally a blend of additional synthetic polymers, such as ethylene and propylene, as a second elastomer; and
c. a rubber fraction, preferably obtained in part from recycled spent automotive or truck tires, and similar sources of waste rubber (sometimes known as "crumb rubber"), ground or recycled into particles having a mesh size of from 10 to 30 (i.e., approximately from about 500 to about 1000 microns).
摘要翻译：本发明涉及用作屋面瓦片和类似产品的低成本，高效制造的基于聚合物的产品。本发明的屋顶板是防风雨的，制造成本低且耐用，特别是与受到冰雹伤害的国家的传统木瓦相比。本发明还包括制造这种瓦片产品的方法。在优选的实施方案中，本发明的产品使用橡胶材料作为聚合物基料与特定类型的聚烯烃的组合。通过使用废旧汽车轮胎的碎屑橡胶颗粒和易于获得并且成本非常低的其它再循环橡胶碎片，可以最有效地提供橡胶材料。这些产品的平均寿命将远远大于现有的采用玻璃纤维或沥青制成的商用屋顶瓦。本发明的产品通过作为材料的混合物的挤出而生产，该产品及其材料可以总结如下，作为屋顶瓦屋产品，其包括：a。作为弹性体的一种或多种侧支式聚烯烃; 湾任选的另外的合成聚合物如乙烯和丙烯的共混物作为第二弹性体; 和c。橡胶部分，优选部分地由再循环的废汽车或卡车轮胎获得，以及类似的废橡胶来源（有时称为“橡胶橡胶”），研磨或再循环到具有10至30的网格尺寸的颗粒中（即，大约约500至约1000微米）。

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