Quiet film and container
AssigneeThe Dow Chemical Company
InventorMartin H. Tusim
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Abstract
A substantially rustle-free thermoplastic film and container made therefrom. The film may be a multilayer structure, a skin of which is formed of a chlorinated polyethylene resin blend. The composition of said structure is such that quietness is imparted without detracting from the extrudability and other physical characteristics necessary for practical applications. A vapor barrier may be included as a core layer. A particular application for the present invention is an ostomy bag.
Claims11
A substantially rustle-free thermoplastic product having a film body comprising a multilayer structure, said structure having at least two skin layers and a core layer, a skin layer of said structure comprising a resin blend, a major component of said blend being a chlorinated polyethylene resin, said film when measured against a background noise generating a frequency reading of about 600 Hertz having a noise level generating a frequency reading of less than 4000 Hertz, the composition of the chlorinated polyethylene comprising between about 25 and 50 weight percent chlorine and the balance being substantially an olefinic polymer or copolymer, said polymer or copolymer being low or medium density polyethylene or an ethylene copolymer which comprises ethylene in at least one monoethylenically unsaturated comonomer or a blend of one or more of such polymers or copolymers;
- the blend of the layer comprising between about 40 and 95 weight percent of the chlorinated polyethylene resin, said core layer being of a different resin than either of said skin layers.
Dependencies are inferred from the claim text.