F - Mech Eng,Light,Heat,Weapons – 16 – J
Patent
F - Mech Eng,Light,Heat,Weapons
16
J
26/161, 277/59
F16J 15/46 (2006.01) B29C 63/00 (2006.01) B29C 63/48 (2006.01)
Patent
CA 1065911
ABSTRACT OF THE DISCLOSURE A folded seal for plastic sheeting comprising, a retain- ing rod, a portion of the sheeting to be sealed wrapped around the retaining rod, and a slotted tube or channel having slot edges that are biased toward each other tending to form a closed tube or channel, disposed around the retaining rod and sheet portion and urging portions of the sheet adjacent the slot edges toward each other to form a seal. Apparatus for forming the seal compris- es a guiding unit for holding the retaining rod, a sealing unit for holding the slotted tube spaced from and movable toward the guiding unit, plastic sheeting to be sealed disposed between the guiding and sealing units, and means for moving the sealing unit toward the guiding unit. The sealing unit includes a slotted tube opening bar for separating the slot edges and allowing the retaining rod with a portion of sheeting therearound to enter the slotted tube. Further provided are disengagement methods for freeing the newly formed seal from the guiding and sealing units.
273748
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