Resin composition for a core for web material

Details Resin composition for a core for web material Resin composition for a core for web material

1992-09-28

1995-05-09

Seidleck, James J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

524127, 524128, 524186, 524323, 524261, 524442, 525240, C08K 549, C08K 516, C08K 513, C08K 334

Patent

active

054140323

ABSTRACT:
A resin composition for forming a core for web material comprising 70 to 30 wt. % of polypropylene resin having a melt index of 10 to 60 g/10 minutes, a bending elastic modulus of more than 8,000 kg/cm.sup.2, an Izod impact strength of more than 2 kg.cm/cm and a Rockwell hardness of more than 70 R, 30 to 70 wt. % of linear low density polyethylene resin having a melt index of 3 to 50 g/10 minutes, a density of 0.910 to 0.935 g/cm.sup.3, an Olsen rigidity of more than 1,500 kg/cm.sup.2 and a Shore hardness of more than 40 D, more than 0.01 wt. % of a lubricant and more than 0.01 wt. % of an antioxidant.
The resin composition is a light weight and excellent in injection moldability, appearance, dropping strength, solvent resistance, transparency, processibility, wear resistance, dimensional accuracy, and little molding troubles such as sink marks, resin remaining at gate, stringiness, weld lines, twist and deformation, add nevertheless, it has a flexibility.

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