Waterproofing membrane having release sheet cutting system
First Claim
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1. A waterproofing membrane comprising:
- a carrier support sheet comprising a continuous film comprising a polyolefin polymer;
a preformed waterproofing adhesive layer comprising a rubber-modified bitumen or a nonbituminous synthetic adhesive, said waterproofing adhesive layer having a first major side and a second major side opposite said first major side;
said first major side thereof being attached to said continuous carrier support sheet;
a release sheet liner releasably attached to said second major side of said preformed waterproofing adhesive layer, said liner comprising waxed or siliconized paper; and
at least one string having a gauge thinner than said preformed waterproofing adhesive layer, said at least one string disposed between said carrier support sheet and said waxed or siliconized paper release sheet liner, said at least one string being operative, when pulled away from said waterproofing adhesive layer, to cut said paper release sheet liner into smaller portions, whereby a cut portion of said release sheet may be removed from said adhesive layer and said carrier support sheet.
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Abstract
An improved waterproofing membrane comprising a preformed waterproofing adhesive layer, releasable sheet liner, and a string or plurality of strings operative to cut the release sheet liner into smaller portions for selective removal to expose portions of the adhesive layer for installation onto a building surface or civil engineering surface.
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Citations
25 Claims
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1. A waterproofing membrane comprising:
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a carrier support sheet comprising a continuous film comprising a polyolefin polymer;
a preformed waterproofing adhesive layer comprising a rubber-modified bitumen or a nonbituminous synthetic adhesive, said waterproofing adhesive layer having a first major side and a second major side opposite said first major side;
said first major side thereof being attached to said continuous carrier support sheet;
a release sheet liner releasably attached to said second major side of said preformed waterproofing adhesive layer, said liner comprising waxed or siliconized paper; and
at least one string having a gauge thinner than said preformed waterproofing adhesive layer, said at least one string disposed between said carrier support sheet and said waxed or siliconized paper release sheet liner, said at least one string being operative, when pulled away from said waterproofing adhesive layer, to cut said paper release sheet liner into smaller portions, whereby a cut portion of said release sheet may be removed from said adhesive layer and said carrier support sheet. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 15, 16, 17, 18, 19, 20)
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12. Method of making a waterproofing membrane laminate comprising:
- providing a waterproofing adhesive layer comprising a rubber-modified bitumen or non-bituminous synthetic polymer, said waterproofing adhesive layer having a first major side and a second major side opposite said first major side, said first major side thereof being attached to a carrier support sheet comprising a continuous polyolefin polymer film, and a releasable sheet liner comprising a waxed or siliconized paper, and incorporating between said continuous polymer film carrier support sheet and releasable paper sheet liner a waterproofing adhesive layer and at least one string having a gauge thinner than said waterproofing adhesive layer, said at least one string being operative to cut said releasable paper sheet liner into smaller portions when said string is pulled away from said waterproofing adhesive layer.
- View Dependent Claims (13, 14)
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21. A waterproofing membrane comprising:
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a carrier support sheet comprising a continuous film comprising a polyolefin polymer;
a preformed waterproofing adhesive layer comprising rubber modified bitumen or a non-bituminous synthetic adhesive, said waterproofing adhesive layer having a first major side attached to said carrier support sheet and a second major side opposite said first major side;
a release sheet liner that is releasably attached to said second major side of said preformed waterproofing adhesive layer, said liner comprising a waxed or siliconized paper; and
at least two strings having gauges thinner than said preformed waterproofing adhesive layer, and said at least two strings being disposed between said polymeric carrier support sheet and said paper release sheet liner, said at least two strings being parallel to each other and operative, when pulled away from said waterproofing adhesive layer, to cut said release sheet liner into portions, whereby a portion of said release sheet may be removed from said adhesive layer. - View Dependent Claims (22, 23, 24, 25)
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Specification