Honeycomb from paper having flame retardant thermoplastic binder
First Claim
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1. A honeycomb having cells comprising a flame resistant paper,the paper comprising:
- a) 5 to 50 parts by weight thermoplastic material having a melting point of from 120°
C. to 350°
C., andb) 50 to 95 parts by weight of a high modulus fiber having a modulus of 600 grams per denier (550 grams per dtex) or greater, based on the total amount of thermoplastic material and high modulus fiber in the paper,wherein the thermoplastic has a limiting oxygen index of at least 26.
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Abstract
This invention relates to an improved flame retardant honeycomb comprising high modulus fiber and a flame retardant thermoplastic binder having a melt point of from 120° C. to 350° C. and a limiting oxygen index of 26 or greater, methods for making the honeycomb, and articles comprising the honeycomb. In a preferred embodiment the paper in the honeycomb has a flame classification of UL-94 V-0.
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Citations
14 Claims
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1. A honeycomb having cells comprising a flame resistant paper,
the paper comprising: -
a) 5 to 50 parts by weight thermoplastic material having a melting point of from 120°
C. to 350°
C., andb) 50 to 95 parts by weight of a high modulus fiber having a modulus of 600 grams per denier (550 grams per dtex) or greater, based on the total amount of thermoplastic material and high modulus fiber in the paper, wherein the thermoplastic has a limiting oxygen index of at least 26. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification