发明名称 Ground cover sheet
摘要 A ground cover sheet for retaining bark dust and bark chips in place in a landscaping arrangement includes a base sheet and a cover sheet. A plurality of rows of short slits are spaced along the length of the cover sheet. The cover sheet is heat welded to the base sheet in a manner to cause bows formed by the spaced slits to extend convexly upwardly. These upwardly extending bows serve to retain bark dust and bark chips in place on the ground cover sheet. The base and cover sheets are preferably formed from a flexible plastic material of a brown color to match the bark dust. The base sheet is formed from a four mils thick material and the cover sheet is formed from a six mils thick material. The upwardly extending bows on the cover sheet may be reinforced with a nylon filament material.
申请公布号 US5009033(A) 申请公布日期 1991.04.23
申请号 US19870121280 申请日期 1987.11.16
申请人 MCCRAY, LEONARD A. 发明人 MCCRAY, LEONARD A.
分类号 A01G13/00;A01G13/02;B32B3/24 主分类号 A01G13/00
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