How to produce high oil content expanded material

DATE：2016/06/24

In puffing material production process, different extrusion machine with different requirement for oil content. single screw require for 17% or less, double screw require for 22% or less, but this data should be foreign extrusion machine with foreign production data, the formula can only be as a reference.
1. The mainstream solution for fat additive: after the process section to add vacuum oil spraying equipment and so on process of mixing, crushing, screening division of labor is good.
2. Adding fat can also be added in the mixing section, but will directly reduce the effect of mixing, crushing, screening and expanded.Of course can also be expanded units in the conditioning device to add fat, but very few domestic use this solution.
3, fat is added in the extrusion machine host directly, this will not affect the effect of mixing, crushing, screening division segment, higher energy consumption of dryers, high oil content of sexual puffing way, to the drying ability is a challenge.
(1) to raise puffing host containing fat ability, can reduce the screw configuration of soft power, improve the material flow in the machine.In terms of the double screw flow obviously have more advantages than single screw.
(2) general increase oil content, the production of puffed buoyancy relative decline about 20%, so the template should be adjust the opening area, hole shape, adjusted to sinking material generally yield will be relatively increased.
(3) if you can relatively improve formula viscosity, starch content, etc., should be beneficial to the production.

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