초록 ▼

A wrapper particularly useful for smoking articles of the type containing a burn fuel element and ceramic jacket. The wrapper includes an inner layer for surrounding the burn fuel element and jacket and an outer layer with the combination imparting controlled throttling properties. The inner layer m

A wrapper particularly useful for smoking articles of the type containing a burn fuel element and ceramic jacket. The wrapper includes an inner layer for surrounding the burn fuel element and jacket and an outer layer with the combination imparting controlled throttling properties. The inner layer may be a conventional cigarette wrapper material of cellulosic construction and having biased burned properties. The outer layer surrounds the inner sheet and preferably comprises cellulose fibers, titanium dioxide, attapulgite clay, high temperature resistant microfibers, and a burn enhancer. The outer wrapper also maintains permeability and pressure drop properties at temperatures in excess of 400°C. while the inner wrapper burns out resulting in generally infinite permeability after burning. The combination in use possesses sufficient mechanical strength to support the assembly of components in specialty smoking articles and as burned properties that produce an ash appearance similar to conventional cigarette ash and has a high degree of ash integrity.

대표청구항 ▼

In a dual inner and outer sheet wrapper construction for a smoking article including an assembly of components, the improvement wherein said inner sheet encloses said components and contains cellulose fibers and in combination with said outer sheet burns with a permeability transition in excess of 5

In a dual inner and outer sheet wrapper construction for a smoking article including an assembly of components, the improvement wherein said inner sheet encloses said components and contains cellulose fibers and in combination with said outer sheet burns with a permeability transition in excess of 500°C. to produce a high permeability ash and wherein said outer sheet surrounds said inner sheet and comprises 40 to 80 percent cellulose fibers, 10 to 30 percent high temperature resistant microfibers, and 10 to 30 percent mineral filler and wherein said dual wrapper constructiion contains up to about 10 percent of a burn enhancer and burns to produce a desirable ash color.