Decorative multilayered extrusion-blow-formed bottle
AssigneeToyo Seikan Co., Ltd.
InventorYuuichirou KATOU
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Abstract
A decorative multilayered extrusion-blow-formed bottle having an inner layer of a polyethylene (A) and a metallic layer of a polyethylene (B) in which a metal pigment having an average thickness of not more than 600 nm is dispersed on the outer side of the inner layer. If the shear viscosities (Pa·s) of the resin forming the layer neighboring the metallic layer on the inner side thereof are denoted by V6 and V30 as measured at the shear rates 6 s−1 and 30 s−1 thereof at a temperature of 210° C., then the shear viscosities (Pa·s) η6 and η30 of the polyethylene (B) measured at the shear rates 6 s−1 and 30 s−1 thereof at a temperature of 210° C. satisfy the following viscosity condition formulas (1) and (2): η6≥V6−2000 (1) η30≥V30−2000 (2)
Claims6
A decorative multilayered extrusion-blow-formed bottle having an inner layer of a polyethylene (A) and a metallic layer of a polyethylene (B) in which a metal pigment having an average thickness of not more than 600 nm is dispersed on an outer side of said inner layer,
- wherein, if a shear viscosities (Pa·s) of a resin that is forming a layer neighboring said metallic layer on an inner side thereof are denoted by V6 and V30 as measured at a shear rates 6 s−1 and 30 s−1 thereof at a temperature of 210° C., then a shear viscosities (Pa·s) η6 and η30 of the polyethylene (B) measured at the shear rates 6 s−1 and 30 s−1 thereof at a temperature of 2101 satisfy the following viscosity condition formulas (1) and (2):
- η6≥V6−2000 (1)
- η30≥V30−2000 (2)
Dependencies are inferred from the claim text.