Adhesive products in sheet form
AssigneeInstaFibre Ltd
InventorDuonne Erasmus
Life of this patent
Estimating the term…
Abstract
A product, generally in sheet form, allowing adjustment in positioning on installation and subsequent removal, including a layer comprising crumb-rubber material, and having a first side and a second side. A coating of a low-grab pressure sensitive adhesive is applied directly to at least part of the exposed surface of the crumb-rubber material. The adhesive is determined to be a low-grab adhesive if, after 24 hours adhesive binding dwell-time, a 90° peel adhesion at 300 mm/minute, as measured by FINAT Test Method No. 2, of between 1.77 and 3.96 Newtons/25 mm width at room temperature (23° C.±1° C.) and at a relative humidity of 50%±5%.
Claims13
A product, generally in sheet form, allowing adjustment in positioning on installation and subsequent removal, the product comprising:
- a layer comprising crumb-rubber material and having a first side and a second side;
- and
- a coating of a low-grab pressure sensitive adhesive directly applied to at least part of an exposed surface of the crumb-rubber material on at least one of the first and second sides,
- wherein the low-grab adhesive comprises an adhesive having, after 24 hours adhesive binding dwell-time, a 90° peel adhesion at 300 mm/minute, as measured by FINAT Test Method No:
- 2, of between 1.77 and 3.96 Newtons/25 mm width at room temperature (23° C.±1° C.) and at a relative humidity of 50%±5%.
A method of manufacturing a product, generally in sheet form, allowing adjustment in positioning on installation and subsequent removal, the method comprising the steps of:
- bonding crumbs of rubber to each other to form a crumb-rubber layer and to a supporting scrim layer on one side of the resulting crumb-rubber layer;
- and
- applying a pressure sensitive adhesive directly to at least part of an exposed surface of an opposing side of the crumb-rubber layer,
- wherein the adhesive, after 24 hours of adhesive binding dwell-time, has a 90° peel adhesion at 300 mm/minute, as measured by FINAT Test Method No. 2, of between 1.77 and 3.96 Newtons/25 mm width at room temperature (23° C.±1° C.) and at a relative humidity of 50%±5%.
A product, generally in sheet form, allowing adjustment in positioning on installation and subsequent removal, the product comprising:
- a layer comprising crumb-rubber material and having a first side and a second side;
- and
- a coating of a low-grab pressure sensitive adhesive applied directly to at least part of an exposed surface of at least one of said first and second sides without a scrim or other intervening layer being interposed between the adhesive and the crumb-rubber material layer,
- wherein the low-grab adhesive comprises an adhesive having, after 24 hours adhesive binding dwell-time, a 90° peel adhesion at 300 mm/minute, as measured by FINAT Test Method No. 2, of between 1.77 and 3.96 Newtons/25 mm width at room temperature (23° C.±1° C.) and at a relative humidity of 50%±5%.
Dependencies are inferred from the claim text.