Method of applying a thermally settable coating to a patterned substrate
First Claim
1. A method of applying a coating to a substrate comprising:
- (a) forming a first pattern in said substrate, wherein said substrate is an asphalt surface;
(b) providing a first pre-formed thermally settable sheet, wherein said sheet is formed of thermoplastic material;
(c) providing at least one further pre-formed thermally settable sheet;
(d) placing said first pre-formed sheet and said at least one further pre-formed sheet on said asphalt surface in an aligned configuration; and
(e) gradually heating said sheets in situ to a temperature sufficient to bond said sheets to said asphalt surface in a configuration conforming to said first pattern.
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Accused Products
Abstract
This application relates to a method of applying a thermally settable coating to a patterned substrate, such as an asphalt surface. The coating is applied in one or more preformed thermoplastic sheets and heated in situ to conform the thermoplastic material to the pattern formed in the underlying substrate. In one embodiment of the invention a pattern is formed in the asphalt surface using a removable template which is impressed into the asphalt when it is in a pliable state. The pre-formed sheets are then applied to the patterned surface and gradually heated. In an alternative embodiment of the invention the template is impressed into the pre-formed sheet and asphalt surface simultaneously after the sheet has been heated to a suitable temperature in situ. A bond reduction agent may be used to minimize adhesion between the template and the heated thermoplastic material.
53 Citations
20 Claims
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1. A method of applying a coating to a substrate comprising:
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(a) forming a first pattern in said substrate, wherein said substrate is an asphalt surface; (b) providing a first pre-formed thermally settable sheet, wherein said sheet is formed of thermoplastic material; (c) providing at least one further pre-formed thermally settable sheet; (d) placing said first pre-formed sheet and said at least one further pre-formed sheet on said asphalt surface in an aligned configuration; and (e) gradually heating said sheets in situ to a temperature sufficient to bond said sheets to said asphalt surface in a configuration conforming to said first pattern. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A method of applying a coating to a substrate comprising:
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(a) forming a first pattern in said substrate, wherein said substrate is an asphalt surface; (b) placing a first pre-formed thermally settable sheet on said substrate, wherein said sheet is formed of thermoplastic material; and (c) heating said sheet in situ to a temperature sufficient for said sheet to adhere to said substrate in a configuration conforming to said first pattern, wherein said sheet comprises a first surface which is placed in contact with said asphalt surface and a second surface which is not placed in contact with said asphalt surface and wherein the step of heating said thermoplastic sheet in situ comprises gradually increasing the temperature of said sheet to enable said first surface of said sheet to bond consistently to said asphalt surface, said heating comprising providing a heating apparatus having a support frame extending over said sheet and at least one heater mounted on said support frame, wherein said heater is mounted for movement relative to said support frame in a travel path which periodically passes over said sheet to thereby gradually increase the temperature thereof. - View Dependent Claims (20)
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Specification