Roll-up doors and method for securing same
A roll-up door including a flexible curtain having a front surface, a back surface, a first end coupled to a shaft, a second end opposite the first end, and first and second side edges extending between the first end and the second end, the flexible curtain being moveable between a retracted position wherein the flexible curtain is coiled around the shaft and a deployed position wherein the flexible curtain is uncoiled from the shaft. A first retention band is mounted along at least a portion of the first side edge of the flexible curtain, the first retention band including an inner surface at least partially facing towards the flexible curtain, an outer surface opposite the inner surface, a fixed edge attached to the flexible curtain generally parallel to the first side edge, and a free edge opposite the fixed edge and movable relative to the fixed edge.
1. A roll-up door guide assembly for securing a rollup door to a structure comprising:
a first guide secured to the structure, the first guide having a throat and a track, the throat having an opening width smaller than a width of the track; and
a flexible curtain disposed within and in sliding engagement with the first guide from an extended position to a retracted position, the flexible curtain including:
a first side edge disposed at an edge of the flexible curtain,
a first reinforcement band coupled to the first side edge, wherein the first reinforcement band comprises a metal,
a first retention band welded to the first reinforcement band and mounted along the first side edge, the first retention band comprising an elastic material that returns to a curved shape after being held in a flattened configuration when the flexible curtain is coiled, the first retention band including:
a fixed edge attached to the flexible curtain along the first side edge;
a free edge opposite from the fixed edge, wherein the free edge is biased away from the flexible curtain when the first retention band is in an expanded configuration, and the free edge is urged toward the flexible curtain when the first retention band is in the flattened configuration, wherein a distance between the free edge and the flexible curtain is greater than the opening width of the throat in the expanded configuration; and
a seal disposed along an end of the flexible curtain extending between the first side edge and a second side edge opposite the first side edge,
the flexible curtain having a pull-out strength of about 1.1 pounds to 50.0 pounds per linear inch of first retention band at a temperature of about 400° Fahrenheit when the flexible curtain is disposed within the first guide.
2. The roll-up door guide assembly of claim 1 , wherein the first retention band is configured to be inserted into the track through the throat of the first guide.
3. The roll-up door guide assembly of claim 2 , wherein disposing the first retention band into the track urges the first retention band into the flattened configuration when passing through the throat and springs the first retention band into the expanded configuration when received in the track,
wherein the first retention band springing into a locking configuration increases the distance between the free edge of the first retention band and the flexible curtain to greater than the opening width of the throat.
4. The roll-up door guide assembly of claim 1 , wherein the flexible curtain has a pull-out strength of about 6.0 to about 11.5 pounds per linear inch of retention band at a temperature of about 65° Fahrenheit to about 70° Fahrenheit when the first retention band and the first side edge are received in the track of the first guide.
5. The roll-up door guide assembly of claim 1 , wherein the seal comprises at least one of: a brush seal or a flexible seal.
6. The roll-up door guide assembly of claim 1 , wherein the first retention band is configured to deflect towards the flexible curtain in response to the first side edge of the flexible curtain being inserted into the throat.
7. The roll-up door guide assembly of claim 1 , wherein a portion of the first guide is configured to be received between an inner surface of the first retention band and the flexible curtain.
8. The roll-up door guide assembly of claim 1 , further comprising a second guide having a track configured to receive at least a portion of the second side edge of the flexible curtain.
9. The roll-up door guide assembly of claim 8 , wherein the flexible curtain further comprises a second retention band mounted along the second side edge of the flexible curtain, the second retention band including an inner surface at least partially facing towards the flexible curtain, an outer surface opposite the inner surface, a fixed edge attached to the flexible curtain along the second side edge, and a free edge opposite from the fixed edge, the free edge of the second retention band biased away from the flexible curtain when the second retention band is in an expanded configuration and the free edge of the second retention band urged toward the flexible curtain when the second retention band is in a flattened configuration, and
wherein the second retention band is disposed within the track defined by the second guide and configured to anchor the second side edge of the flexible curtain within the track defined by the second guide.
10. The roll-up door guide assembly of claim 1 , wherein the first guide includes a first element and a second element configured to engage the first element, wherein the throat is positioned between the first element and the second element.
11. The roll-up door guide assembly of claim 1 , wherein the first guide is configured to be secured along a lateral side of an aperture.
12. The roll-up door guide assembly of claim 1 , wherein the first guide is configured to be secured outside a frame that defines an aperture.
13. The roll-up door guide assembly of claim 12 , wherein the first guide is configured to be secured directly adjacent to or abut the frame that defines the aperture.
14. The roll-up door guide assembly of claim 1 , wherein the first guide is configured to be secured on or within a frame that defines an aperture.
15. The roll-up door guide assembly of claim 8 , wherein the first guide and the second guide are configured to be mounted parallel to each other on either side of an aperture and spaced apart by a predetermined distance that is sufficient to cover the aperture.
16. The roll-up door guide assembly of claim 1 , wherein the first guide is configured to be mounted perpendicular to a shaft.
17. The roll-up door guide assembly of claim 16 , wherein the first guide is configured to direct the flexible curtain as the flexible curtain is coiled about the shaft from the extended position to the retracted position.
18. The roll-up door guide assembly of claim 1 , wherein the first guide includes a fascia attachment element.
19. The roll-up door guide assembly of claim 1 , wherein the first retention band cooperates with the first guide to occlude a passage of smoke through the first guide.