Patent ID: 7004753

Claim:
In a reactor for treating strands or strips of material having a surface, the reactor including: an outer jacket extending parallel to a transportation direction of the strands or strips of the material; two opposing walls, at least one of the walls having an opening for passing the strands or strips of material therethrough; devices for transporting the strands or strips of material through the reactor; devices for transporting the strands or strips of material relative to the reactor; devices for transporting gases relative to a reactor space; and a gas feedline and distribution device disposed at the opening and having gas discharge openings, the gas feedline and distribution device being configured to outflow a gas stream at the gas discharge openings to generate a gas curtain for preventing undesirable substances from crossing the gas curtain relative to the reactor space; a gas seal, comprising: a deflector or gas guide body of the gas feedline and distribution device: extending toward an interior of the reactor; disposed behind the gas discharge openings of the gas feedline and distribution device relative to the interior of the reactor; and disposed at a distance from the respective surfaces of the strands or strips of material.