摘要:
A method for manufacturing a surface-treated laminated film is provided. The produced film should include at least a surface treated polyolefin-containing resin layer with a flame or corona treated surface and a heat sealable resin layer having a storage shear modulus of 400,000 Pa or less at 100 rad/s at 121° C., 100,000 Pa or less at 10 rad/s at 121° C., and 5000 Pa or less at 1 rad/s at 121° C. The method may involve coextruding a laminated film that includes at least a polyolefin-containing resin layer and a heat sealable resin layer. The laminated film may be simultaneously stretched in machine and traverse direction, and subsequently surface treated to produce a surface-treated laminated film.
摘要:
A laminate film having a surface treated polyolefin-containing resin layer having a flame or corona treated surface and a plastomer-containing a heat sealable resin layer that is not directly on the flame or corona treated surface, the heat sealable resin layer having a storage shear modulus of 400,000 Pa or less at 100 rad/s at 121° C., 100,000 Pa or less at 10 rad/s at 121° C., and 5000 Pa or less at 1 rad/s at 121° C., is disclosed. The machine direction tensile properties of the laminate film include: Young's modulus of 350,000 psi (2,413,165 kPa) or more, an elongation of 120% or less, and a tensile strength of 27,000 psi (186,158 kPa) or more.
摘要:
A laminate film comprising a polyolefin polymer layer having a surface treated by a flame or corona discharge treatment method and biaxially oriented at about 5.5-10.0 stretch ratio in the machine direction and about 7.0-12.0 stretch ratio in the transverse direction which imparts superior machine direction tensile properties such as Young's modulus of about 350,000 to about 400,000 psi or greater, elongation of 120% or less, and tensile strength of about 27,000 to about 30,000 psi or greater; and a metal layer having an optical density of at least about 1.8 deposited on said treated surface of said polyolefin-based resin layer.
摘要:
Transparent, articles, in particular sheets, having a thickness greater than 5 mm obtained from polyalkylene terephthalate/isophthalate resin containing 5-20% of isophthalic, acid units,. characterised by an intrinsic viscosity greater than 0.8 dl/g; a melt strength at 280° C. greater than 1 cN and a melt viscosity at 280° C. greater than 2000 Pa·s for shear rates tending to zero and not less than 200 Pa·s for shear rates of 1000 sec−1.
摘要:
A process for the preparation of aromatic polyester resins, in which the resin obtained from the polycondensation phase in the molten state conducted by utilizing a titanium based compound as a catalyst, is subjected to a solid state polycondensation reaction in the presence of a dianhydride of a tetracarboxylic acid.