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US 2015/0082748 A1Published application
Method of Making an Asphalt Container
OwnerNeil Draperinventor
Life of this patent
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Abstract
A method of making a one piece, leak proof container for holding and transporting hot melt asphalt. The container is made from a sheet of heavy duty cardboard which is coated on one side, folded and glued to create a leak proof container. The sheet has a series of pre-scored fold lines to allow the sheet to be folded into a container with a leak proof bottom. A series of reinforcing sheets are added to the bottom of the container to provide reinforcement, and to create the leak proof base.
Claims16
A method of making a single piece leak proof container for asphalt, comprising the steps of:
- providing a heavy duty cardboard;
- coating one side of said cardboard with a specialty coating, but leaving an uncoated glue strip, wherein said coated side is the inside surface of the container;
- cutting said cardboard into a sheets of specified size;
- scoring an outside surface of said sheet with embossed fold lines;
- folding said sheets in half, applying an adhesive to said uncoated strip and adhering said uncoated strip to a portion of said outside surface of said sheet to create a flat sleeve with the coating on the inside;
- opening said flat sleeve to form a rectangular tube by folding along one set of fold lines;
- placing said rectangular tube on a form;
- folding two bottom sides down onto said form to leave two raised flaps and to create a first flat bottom, wherein said two bottom sides overlap to fully enclose a bottom of said container;
- applying an adhesive to first flat bottom;
- attaching a first reinforcing sheet onto said first flat bottom to create a leak proof bottom for the container;
- applying an adhesive to said first flat bottom;
- folding the two raised flaps down onto said first flat bottom to create a second flat bottom;
- providing a second reinforcing sheet;
- applying an adhesive to a bottom of said second reinforcing sheet;
- attaching said second reinforcing sheet onto said second flat bottom to create a base for the container;
- compressing and heating said based against said form to cure said adhesives to create a leak proof base for said container;
- removing said container from said form;
- folding said container along said fold lines to render said container nearly flat;
- stacking said container for shipping and delivering said container to an end use for filling with asphalt;
- opening said container such that said container can be filled with hot melt asphalt.
17 more elements
The method of making a one piece leak proof container of claim 4 wherein the fiberboard is uncoated 100% virgin kraft fiberboard with a thickness of between 0.018″ and 0.026″.
A method of making a single piece leak proof container for asphalt, comprising the steps of:
- providing a heavy duty cardboard, wherein said cardboard is 100% virgin kraft fiberboard with a thickness of between 0.018″ and 0.026″;
- coating one side of said cardboard with a specialty coating, but leaving an uncoated glue strip, wherein said coated side is the inside surface of the container, wherein said coating is silicone applied at a dry weight of between 1.5 gsm or 3.0 gsm;
- cutting said cardboard into a sheets of specified size;
- scoring an outside surface of said sheet with embossed fold lines;
- folding said sheets in half, applying an adhesive to said uncoated strip and adhering said uncoated strip to a portion of said outside surface of said sheet to create a flat sleeve with the coating on the inside, wherein the adhesive is a synthetic emulsion adhesive with a solid content of between 40% and 60%;
- opening said flat sleeve to form a rectangular tube by folding along one set of fold lines;
- placing said rectangular tube on a form;
- folding two bottom sides down onto said form to leave two raised flaps and to create a first flat bottom, wherein said two bottom sides overlap to fully enclose a bottom of said container;
- applying the adhesive to first flat bottom;
- attaching a first reinforcing sheet onto said first flat bottom to create a leak proof bottom for the container;
- applying the adhesive to said first flat bottom;
- folding the two raised flaps down onto said first flat bottom to create a second flat bottom;
- providing a second reinforcing sheet;
- applying the adhesive to a bottom of said second reinforcing sheet;
- attaching said second reinforcing sheet onto said second flat bottom to create a base for the container;
- compressing and heating said based against said form for 30 seconds to cure said adhesives to create a leak proof base for said container, wherein the base is compressed with a pressure of between 60 psi and 100 psi, and wherein said base is heated to between 200 F. and 250 F;
- removing said container from said form;
- folding said container along said fold lines to render said container nearly flat;
- stacking said container for shipping and delivering said container to an end use for filling with asphalt;
- opening said container such that said container can be filled with hot melt asphalt;
- filling said container with a hot melt asphalt;
- cooling said filed container to allow said asphalt to solidify;
- transporting said filled container to a job site;
- removing said container from the solidified asphalt;
- and
- recycling said container.
23 more elements
Dependencies are inferred from the claim text.