This is enough retention time to allow any variations in consistency entering the chest to be levelled out by the action of the basis weight valve receiving feedback from the on line basis weight measuring scanner . ( Note : Many paper machines mistakenly control consistency coming out of the machine chest, interfering with basis weight control .)
12.
This is enough retention time to allow any variations in consistency entering the chest to be levelled out by the action of the basis weight valve receiving feedback from the on line basis weight measuring scanner . ( Note : Many paper machines mistakenly control consistency coming out of the machine chest, interfering with basis weight control .)
13.
This is enough retention time to allow any variations in consistency entering the chest to be levelled out by the action of the basis weight valve receiving feedback from the on line basis weight measuring scanner . ( Note : Many paper machines mistakenly control consistency coming out of the machine chest, interfering with basis weight control .)
14.
Corrugated fiberboard can be specified by the construction ( single face, singlewall, doublewall, etc . ), flute size, burst strength, edge crush strength, flat crush, basis weights of components ( pounds per thousand square feet, grams per square meter, etc . ), surface treatments and coatings, etc . TAPPI and ASTM test methods for these are standardized.
