Disposable cover for bumper blocks
View Patent ↗A disposable cover for a bumper block comprises a body member having a cavity and an opening for receiving the bumper block. The body member is formed from an elastic polyethylene resin so that the body member may be expanded to accommodate the bumper block when the cover is placed thereon. In order to make the disposable cover, a tubular sheet of the polyethylene resin is flattened to form opposing sidewalls. Perforations are added at spaced apart locations along a length of the sheet, and the opposing sidewalls are heat sealed together proximate to the spaced apart locations. The sheet is cut along its length and the perforations are torn to form individual covers.
1. A disposable cover for covering a bumper block disposed on a traffic surface to protect it from sealant during a traffic surface treatment process, comprising:
a stretchable body member having a cavity with an opening for receiving the bumper block, the body member being formed from a thin sheet of an elastic polyethylene resin that is readily elastically expandable so that the body member may be expanded to accommodate bumper blocks of varying sizes when the cover is placed thereon and that independently contracts from its expanded condition to form a seal over the bumper block.
2. The disposable cover of claim 1 wherein the polyethylene resin is selected from the group consisting of ethylene-vinyl acetate (EVA) and metallocene.
3. The disposable cover of claim 1 wherein the body member has an elasticity from approximately 20 percent to approximately 75 percent.
4. The disposable cover of claim 3 wherein the body member has an elasticity from approximately 20 percent to approximately 30 percent.
5. The disposable cover of claim 1 wherein the body member has a thickness from approximately 0.05 mils to approximately 5 mils.
6. The disposable cover of claim 1 wherein the polyethylene resin includes an antiblock agent.
7. The disposable cover of claim 6 wherein the antiblock agent is selected from the group consisting of synthetic silicas, natural silicas, and natural minerals.
8. The disposable cover of claim 6 wherein the antiblock agent is calcium carbonate.