LAMINATE
A multi-layer laminate product including: (a) a first polyolefin film substrate layer; (b) a second woven polyolefin fabric substrate layer; and (c) a layer of a solventless (or solvent-free) laminating adhesive composition disposed on the surface of at least one of the layers of (a) and (b) for binding layers (a) and (b); and a process for manufacturing the above laminate.
1 . A multi-layer laminate comprising:
(a) a first polyolefin film substrate layer;
(b) a second woven polyolefin fabric substrate layer; and
(c) a layer of a laminating adhesive composition disposed on the surface of at least one of the layers of (a) and (b) for binding layers (a) and (b).
2 . The laminate of claim 1 , wherein the first layer is a printed biaxially oriented polypropylene film layer.
3 . The laminate of claim 1 , wherein the second layer is a woven polypropylene layer or a woven high density polyethylene layer.
4 . The laminate of claim 1 , wherein the laminating adhesive composition is a two-component solventless polyurethane-based laminating adhesive including at least one isocyanate component and at least one polyol component.
5 . The laminate of claim 4 , wherein the isocyanate component is at least one aliphatic multi-functional isocyanate compound at a concentration of from 40 weight percent to 70 weight percent.
6 . The laminate of claim 4 , wherein the polyol component is at least one polyester polyol compound at a concentration of from 30 weight percent to 60 weight percent.
7 . A process for producing a multi-layer laminate comprising the steps of:
(I) providing:
(a) a first polyolefin film substrate layer;
(b) a second woven polyolefin fabric substrate layer; and
(c) a laminating adhesive composition for binding layers (a) and (b) together;
(II) applying the adhesive composition from step (I) to at least a portion of the surface of at least one of the layers of the first and second substrate layers of step (I) to form an adhesive layer;
(III) combining the first and second substrate layers together with the adhesive layer, sufficient to form a multi-layer laminate; and
(IV) curing the structure of step (III) to form a cured multi-layer laminate.