초록 ▼

A process of reinforcing a closed sectional portion of a vehicle body with a two-pack urethane foam composition. The process including the operations of injecting a two-pack urethane foam composition into the closed sectional portion of a vehicular body member; foaming and curing the two-pack uretha

A process of reinforcing a closed sectional portion of a vehicle body with a two-pack urethane foam composition. The process including the operations of injecting a two-pack urethane foam composition into the closed sectional portion of a vehicular body member; foaming and curing the two-pack urethane foam composition within said closed sectional portion; and then viewing the cured urethane foam-filling confirming opening to confirm whether the closed sectional portion has been sufficiently filled by the two-pack urethane foam composition. The closed sectional portion has a cured urethane foam-filling confirming opening, which is a hole extending through a wall of the closed sectional portion, The opening dimension of the cured urethane foam-filling confirming opening is 10 mm or less in order to assure rigidity of the vehicular body member.

대표청구항 ▼

The invention claimed is: 1. A process comprising: injecting a two-pack urethane foam composition into a closed sectional portion of a vehicular body member, said closed sectional portion having a cured urethane foam-filling confirming opening, and said cured urethane foam-filling confirming openin

The invention claimed is: 1. A process comprising: injecting a two-pack urethane foam composition into a closed sectional portion of a vehicular body member, said closed sectional portion having a cured urethane foam-filling confirming opening, and said cured urethane foam-filling confirming opening being a hole extending through a wall of said closed sectional portion; foaming and curing said two-pack urethane foam composition within said closed sectional portion; and then viewing said cured urethane foam-filling confirming opening to confirm whether said closed sectional portion has been sufficiently filled by said two-pack urethane foam composition, wherein an opening dimension of said cured urethane foam-filling confirming opening is 10 mm or less to assure rigidity of said vehicular body member. 2. The process according to claim 1, wherein foaming and curing said two-pack urethane foam composition within said closed sectional portion results in the foamed and cured two-pack urethane foam composition existing within said closed sectional portion to a limit position, with said cured urethane foam-filling confirming opening being positioned from said limit position by at most 50 mm. 3. The process according to claim 2, wherein said cured urethane foam-filling confirming opening is positioned from said limit position by at most 30 mm. 4. The process according to claim 1, wherein said cured urethane foam-filling confirming opening is positioned from said limit position by at most 30 mm. 5. The process according to claim 4, wherein said opening dimension of said cured urethane foam-filling confirming opening is within a range of from 1 mm-7.5 mm. 6. The process according to claim 1, wherein injecting a two-pack urethane foam composition into a closed sectional portion of a vehicular body member comprises injecting said two-pack urethane foam composition through an injection port, with said injection port and said cured urethane foam-filling confirming opening being positioned on the same side of said closed sectional portion of said vehicular body member. 7. The process according to claim 6, wherein foaming and curing said two-pack urethane foam composition within said closed sectional portion results in the foamed and cured two-pack urethane foam composition existing within said closed sectional portion to a limit position, with said cured urethane foam-filling confirming opening being positioned from said limit position by at most 50 mm. 8. The process according to claim 7, wherein said cured urethane foam-filling confirming opening is positioned from said limit position by at most 30 mm. 9. The process according to claim 8, wherein said opening dimension of said cured urethane foam-filling confirming opening is within a range of from 1 mm-7.5 mm.