| Patent Number |
Title Of Patent |
Date Issued |
| 5820970 |
Calendered film of polypropylene resin |
October 13, 1998 |
| Polypropylene films which have cavities distributed in the film and on the surfaces are suitable for writing or printing and have a low density. The films have surface qualities of each side of surface within .+-.2.times.10.sup.-6 inch of the average depth of the cavities, .+-.2% of |
| 5750645 |
Process for the production of calendered film of polypropylene resin |
May 12, 1998 |
| A process which combines a calender with a stretching system and a set of heating rolls is provided in this invention to produce films of polypropylene resin of wide thickness range. The polypropylene films which have cavities distributed in the film and on the surfaces are suitable for |
| 5714547 |
Polymer blend composition for forming transparent polyethylene film |
February 3, 1998 |
| The present invention relates to a blown film forming composition which improves the clarity, haze and gloss while improving or maintaining the mechanical properties of the high density polyethylene film. The film forming composition includes about 50 to about 99% by weight of an eth |
| 5658644 |
Light weight board of improved mechanical strength and manufacture thereof |
August 19, 1997 |
| An extruded hollow plastic board is described which has a pair of flat and parallel sheets spaced apart and interconnected by longitudinally extending ribs. The ribs and sheets are connected with rounded joint areas, which significantly improve the mechanical properties and solve und |
| 5464098 |
Method for manufacturing consecutively opened bag and bagging system |
November 7, 1995 |
| A method for manufacturing automatic consecutively opened thermoplastic T-shirt bags for dispensing from a conventional supporting rack. The method involves providing a continuous flattened tube of thermoplastic film and applying adhesive solution using a printing press to form adhes |
| 5439628 |
Method for manufacturing polypropylene film and sheet |
August 8, 1995 |
| The present invention is directed at polypropylene compositions containing a high level of filler, at a calendering process which uses the compositions to produce polypropylene films and sheets, and at the film or sheet produced from that process. The process of manufacturing polypro |
