| Patent Number |
Title Of Patent |
Date Issued |
| 4753842 |
Heat-shrinkable biaxially drawn polyamide film and process for preparation thereof |
June 28, 1988 |
| Disclosed is a heat-shrinkable biaxially drawn polyamide film which is formed from a homopolymer or copolymer of .epsilon.-caprolactam or a polyblend thereof, by a sequential biaxial drawing method and which has a density of 1.129 to 1.136 g/cm.sup.3 and an in-plane orientation index of |
| 4698195 |
Process for preparing biaxially drawn polyamide films |
October 6, 1987 |
| Biaxially drawn polyamide films having an excellent levelness are prepared as follows. A substantially unoriented polyamide film is heated at 45.degree.-65.degree. C., and then drawn in the longitudinal direction at a deformation rate of at least 10,000%/min. and a draw ratio of 2.7-3.5 |
| 4690792 |
Biaxially drawn laminated films prepared by sequential stretching |
September 1, 1987 |
| A biaxially drawn laminated films having a good oxygen barrier property, a good mechanical strength and high thickness uniformity are made by a process comprising:a first step of forming a substantially amorphous unoriented laminated film comprising a saponified ethylene/vinyl acetate co |
