Continuous web of flexible plastic strips for strip door systems
A continuous web of flexible plastic strips, for use in a flexible strip door system, the continuous web of flexible plastic strips having uninterrupted cuts, of a depth less than the thickness of the web, arranged along lines which are perpendicular to the longitudinal edges of the web. Remaining material of the web, which is located below each cut, provides sufficient strength along the length of the web to prevent severing during routine handling, but allows for manual tearing of the web along the cuts when the web is subjected to opposing forces perpendicular to upper and lower faces of the web on either side of the cut.
1. A continuous web of flexible plastic strips, of a flexible strip door system, said flexible plastic strips being of a selected length, selected width, and selected thickness for use with hanging means in a flexible strip door system, comprising
a continuous web of flexible plastic strips, said continuous web having thickness-defining upper and lower faces and longitudinal edges, and having a length exceeding the combined length of two of said flexible plastic strips, the upper face of said continuous web having an uninterrupted cut, to a depth in the thickness direction less than said selected thickness, along cutting-lines perpendicular to and extending between the longitudinal edges thereof, said cutting lines having a spacing, along the length of said continuous web, corresponding to the selected length of said flexible plastic strips, wherein
said continuous web of flexible plastic strips has spaced rows of uniformly spaced apertures therein, a row of said apertures being adjacent each said cutting line.
2. The continuous web of flexible plastic strips as defined in claims 1 , wherein said continuous web of flexible plastic is wound upon itself to form a coil.
3. The continuous web of flexible plastic strips as defined in claim 1 , wherein said flexible plastic material is PVC.
4. The continuous web of flexible plastic strips as defined in claim 1 , wherein the continuous web of flexible plastic is cut to a depth equal to 60% to 90% of said selected thickness.
5. The continuous web of flexible plastic strips as defined in claim 4 , wherein said cut is to a depth of about 85% of said selected thickness.
6. The continuous web of flexible plastic strips as defined in claim 3 , wherein the thickness of said PVC material is in a range of 0.060 to 0.160 inch.
7. The continuous web of flexible plastic strips as defined in claim 1 , wherein said continuous web has parallel planar upper and lower faces.
8. The continuous web of flexible plastic strips as defined in claim 1 , wherein said lower face has protruding ribs thereon extending in a longitudinal direction thereof.
9. The continuous web of flexible plastic strips as defined in claim 1 , wherein both said upper and lower faces have protruding ribs thereon extending in a longitudinal direction thereof.
10. The continuous web of flexible plastic strips as defined in claim 1 , wherein spaced reinforcing cords are embedded in the strips in a longitudinal direction thereof.
11. The continuous web of flexible plastic strips as defined in claim 1 , wherein said cords are cut at said cutting lines.
12. A continuous web of PVC strips, said PVC strips of a flexible strip door system, being of a selected length, selected width, and selected thickness for use with hanging means in a flexible strip door system, comprising:
a continuous web of PVC strips, said continuous web having thickness-defining upper and lower faces and longitudinal edges, and having a length exceeding the combined length of two of said PVC strips, the upper face of said continuous web having an uninterrupted cut, to a depth in the thickness direction equal to 60% to 90% of said selected thickness, along cutting-lines perpendicular to and extending between the longitudinal edges of said continuous web, said cutting lines having a spacing, along the length of said continuous web, corresponding to the selected length of said PVC strips, and said continuous web of PVC strips having rows of uniformly spaced apertures therein, a row of said apertures being adjacent each of said cutting lines.
13. The continuous web of flexible plastic strips as defined in claim 9 , wherein each said uninterrupted cut along a cutting line, to a depth in the thickness direction less than said selected thickness, leaves remaining an uncut portion of the continuous web which:
includes the protruding ribs of the lower face;
is of a substantially uniform thickness between the longitudinal edges of the continuous web; and
has an upper surface having substantially the same contour as the lower face of the continuous web.