Claims
- 1. A process for making a paperboard composite comprising a topmost paperboard layer, an adhesive material, and a bottom paperboard layer comprising the steps of:
(a) applying a continuous film of the adhesive material to cover a face surface of a paperboard layer selected from the topmost paperboard layer and the bottom paperboard layer; and (b) bonding the topmost layer with the bottom layer wherein said layers are aligned so the continuous film of the adhesive material resides between a face surface of each of said layers.
- 2. The process of claim 1 wherein the topmost paperboard layer is thinner than the bottom paperboard layer and the continuous film of adhesive material is applied to said topmost paperboard layer in step (a).
- 3. The process of claim 2 wherein the topmost paperboard layer is selected from a fine paper and a bleached paperboard and the bottom paperboard layer is an unbleached folding carton board.
- 4. The process of claim 3 wherein the adhesive material is selected from polyvinyl acetate (PVA), polyvinyl alcohol (PVOH), SBR latex, acrylic emulsions, sodium silicate, cooked starch, and extruded polymer films including, low density polyethylene (LDPE), high density polyethylene (HDPE), polyvinylidene dichromate (PVDC), nylon, and polypropylene.
- 5. The product of the process of claim 1.
- 6. A box formed from the product of claim 5.
- 7. A laminated paperboard comprising a thinner topmost paperboard layer, an adhesive material, and a thicker bottom paperboard layer wherein the adhesive material is situated between and in contact with both the thinner topmost paperboard layer and the thicker bottom paperboard layer.
- 8. A box formed of the laminated paperboard of claim 7.
- 9. The process of claim 2 wherein the thinner topmost paperboard layer is unprinted.
- 10. The process of claim 9 wherein the thinner topmost paperboard layer is characterized by a thickness of 0.002 to 0.012 inches.
- 11. The process of claim 2 wherein the bottom paperboard layer is unprinted.
- 12. The process of claim 11 wherein the bottom paperboard layer is characterized by a thickness of 0.025 to 0.032 inches.
Parent Case Info
[0001] This non-provisional patent application is filed to benefit from the filing date of provisional patent application Ser. No. 60/242,573, filed on Oct. 23, 2000.
Provisional Applications (1)
|
Number |
Date |
Country |
|
60242573 |
Oct 2000 |
US |