Patent ID: 8827673
Filing Date: 2014-09-09
Classification: B29C,D04H

Abstract:
1. A device for the dry-forming of a fibrous web comprising: a. a forming head, to which a plurality of fibers or fiber mixtures can be fed via an air flow, and including a forming outlet for the generation of a fiber flow formed of fibers and air; b. an air permeable deposit belt for receiving and transporting the fibers, which acts together with a suction device for the generation of a suction flow, c. a forming zone having an empty space formed between the forming outlet of the forming head and the deposit belt wherein the empty space is shielded from the surrounding environment by a sealing means; and, d. a feed opening having an adjustable inflow cross-section in relation to the surrounding environment configured to adjustably supply a secondary air flow from a surrounding environment into the forming zone during operation, formed at the sealing means and disposed at an entry end in relation to the deposit belt.