B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
18/521
B29C 49/04 (2006.01) B29C 47/00 (2006.01) B29C 49/08 (2006.01) C08J 5/18 (2006.01)
Patent
CA 2024770
ABSTRACT A process of producing a transparent resin film includes inflation molding in an upward direction a resin composition which is comprised of 100 parts by weight of a polybutylene terephthalate resin having an intrinsic viscosity IVa of at least 1.0, and between 15 to 45 parts by weight of a polycarbonate resin having an intrinsic viscosity IVb of at least 0.4. The polybutylene terephthalate and polycarbonate resins are present such that the ratio ?A/?B is between 0.35 to 1.5, wherein ?A is the melt viscosity of the polybutylene terephthalate resin at a shear rate of 100-1 at 260°C, and ?B is the melt viscosity of the polycarbonate resin at a shear rate of 100-1 at 260°C. During inflation molding, the resin composition is extruded at an extrusion temperature T(°C) which satisfies the equation: 240°C ? T(°C) ? (MP - 26) + (53 x IVa) where MP is the melting point of the resin composition as determined by differential thermal analysis at a rate of 10°C per minute. The films will exhibit a low haze value of less than 10% as determined by ASTM D 1003.
Nedzu Shigeru
Polyplastics Co. Ltd.
Smart & Biggar
LandOfFree
Transparent polybutylene terephthalate resin film and... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Transparent polybutylene terephthalate resin film and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Transparent polybutylene terephthalate resin film and... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1846517