Systems and methods for applying dots of different adhesives to moving roofing shingle stock
Systems and methods of applying self-seal strips of multiple different adhesives are disclosed. In one embodiment, two spaced apart spoked applicator wheel assemblies are positioned beneath a web of moving shingle stock such that each of the applicator wheels applies dots of different adhesives in an alternating pattern. In other embodiments, a layer of a second adhesive is deposited onto previously applied dots of a first adhesive to form layered adhesive dots with dual properties of both adhesives.
1. A roofing material comprising:
a shingle formed from a shingle stock material and comprising:
a first plurality of dots of a first adhesive applied along a surface of the shingle; and
a second plurality of dots of a second adhesive applied along the surface of the shingle;
wherein the first plurality of dots of the first adhesive are non-overlapping with the second plurality of dots of the second adhesive;
wherein the first adhesive comprises a self-seal adhesive material having first adhesive properties and the second adhesive comprises another self-seal adhesive material having second adhesive properties that are different from the first adhesive properties of the first adhesive such that application of the first adhesive and the second adhesive forms a multi-adhesive self-seal strip having different adhesive properties along the surface of the shingle;
wherein the self-seal adhesive material of the second adhesive is configured to exhibit tacking at a tacking temperature that is less than a tacking temperature of the self-seal adhesive material of the first adhesive; and the self-seal adhesive material of the first adhesive is configured to form a seal following exposure to sunlight or heat, and
wherein an amount of the second plurality of dots of the second adhesive is less than an amount of the first plurality of dots of the first adhesive, such that the second plurality of dots of the second adhesive are applied to the surface of the shingle in a ratio with respect to the first plurality of dots of the first adhesive of 1 to 4, 1 to 3, 1 to 2, 2 to 3 or 3 to 4.
2. The roofing material of claim 1 , wherein the second plurality of dots of the second adhesive are applied along spaces defined between the first plurality of dots of the first adhesive applied along the surface of the shingle.
3. The roofing material of claim 1 , wherein the first and second adhesives are applied in varying patterns or configurations along the surface of the shingle stock.
4. The roofing material of claim 1 , wherein the first and second adhesives are applied in varying patterns or configurations whereby the first plurality of dots of the first adhesive are spaced inwardly from a peripheral edge of the shingle, and the second plurality of dots of the second adhesive are applied at positions offset cross-wise from and aligned with spaces between the first plurality of dots of the first adhesive, along the first plurality of dots of the first adhesive, between the first plurality of dots of the first adhesive and the peripheral edge of the shingle, or combinations thereof.
5. The roofing material of claim 1 , wherein the first and second adhesives are applied in a pattern or configuration of dots of the first plurality of dots alternating with dots of the second plurality of dots along the surface of the shingle stock.
6. The roofing material of claim 1 , wherein the first and second adhesives are applied in a pattern or configuration of two or more dots of the first plurality of dots and at least one dot of the second plurality of dots along the surface of the shingle stock.
7. The roofing material of claim 1 , wherein the first and second adhesives are applied in patterns or configurations along the surface of the shingle stock; the patterns or configurations including two or more dots of the first plurality of dots alternating with one or two dots of the second plurality of dots, three dots of the first plurality of dots alternating with one or two dots of the second plurality of dots, four dots of the first plurality of dots alternating with one, two, or three dots of the second plurality of dots, or combinations thereof.
8. The roofing material of claim 1 , wherein the first plurality of dots of the first adhesive and the second plurality of dots of the second adhesive applied along the surface of the shingle stock comprise varying shapes, sizes, or combinations thereof.