| 摘要 |
<p>The trough (1) has a composite exhibiting 5-90 percentages of vegetable fibers and formed by a compressed fleece. The composite is made of a thermoplastic material such as polypropylene and/or polyethylene, or duroplastic material e.g. epoxy resin and phenolic resin. An outer side of the trough has a cover layer (6) that is made of plastic covering fleece that is applied on a side of the compressed fleece. Four creases are formed at a base (4) of a central recess (3). The cover layer is attached to a circulating outwardly directing edge (2) of the trough. The vegetable fibers are selected from a group consisting of flax, hemp, sisal, kenaf, jute, wood and coco. An independent claim is also included for a method for manufacturing a solar trough.</p> |
