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US3995084A Expired / Lapsed US ⏱️ 0.0 years remaining

Films and bags of nylon 6 - nylon 6,6 blends

Assignee: Honeywell International Inc
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Filing: 1975-02-26
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Granted: 1976-11-30
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Expires: 1995-02-26
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Abstract

Abstract In accordance with the present invention, films of a nylon 6-nylon 6,6 blend are produced by a process which comprises blending about 50 to about 80 percent by weight nylon 6 resin and correspondingly about 50 to about 20 percent by weight nylon 6,6 resin, extruding said blend at a temperature above its melting point onto a smooth moving support to form a coherent film; maintaining said support at a surface temperature in the range of about 230 DEG to about 300 DEG F. and collecting the resultant film. The resultant film has a haze value, as hereinafter defined, in the range of about 5 to about 20 percent, preferably about 8 to about 14 percent. Film having the latter range of haze values is particularly suitable for the production of cooking bags.

Inventors

  • 👤 Paul W. Berger
  • 👤 Philip S. Bollen

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-25 04:11
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/16; B; B65; B65D; B65D81/00; B65D81/34; B65D81/3415; C08L; C08L77/00; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1334; Y10T428/1345; Y10T428/26; Y10T428/31504; Y10T428/31725; Y10T428/31739; Y10T428/31855

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 60 words
A cooking bag formed from a film comprising a blend of about 50 to about 80 weight percent nylon 6 resin and correspondingly about 50 to about 20 weight percent nylon 6,6 resin and having a haze value, as determined by ASTM D-1003, of about 8 to about 14 percent and a heat stabilizer comprising cuprous iodide and cuprous bromide.
Claim 2
Dependent Claim 60 words
A cooking bag formed from a film comprising a blend of about 50 to about 80 weight percent nylon 6 resin and correspondingly about 50 to about 20 weight percent nylon 6,6 resin and having a haze value, as determined by ASTM D-1003, of about 8 to about 14 percent and a heat stabilizer comprising cuprous iodide and cuprous bromide.
Claim 3
Dependent Claim 31 words
A film in accordance with claim 1 wherein said blend comprises about 60 to about 70 weight percent nylon 6 and correspondingly about 40 to about 30 weight percent nylon 6,6.
Claim 4
Dependent Claim 17 words
A film in accordance with claim 2 having a thickness of about 0.5 to about 2 mils.

References Cited (Backward Citations)

CA636072A Cited
CA750973A Cited
US2193529A Cited
US2852485A Cited
US3491042A Cited
US3519595A Cited
US3750873A Cited
US3776798A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1979-11-30 1980-05-31 1980-11-30 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1983-11-30 1984-05-31 1984-11-30 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1987-11-30 1988-05-31 1988-11-30 $7700.00 Window Closed / Lapsed

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