Initial mixing device for PVC metalized thermal shrinkage film materials

Abstract

The invention relates to an initial mixing device for PVC metallized heat shrinkable film material. The mixing device includes an upper hopper, a lower hopper, a support frame, a hopper rotating mechanism and a spiral body, the spiral body is connected between the upper hopper and the lower hopper, and the spiral cavity is provided in the spiral body, The spiral chamber is provided with a spiral element, the silo rotating mechanism is set on a support frame, and the silo rotating mechanism is provided with connecting shafts fixed on the upper silo and the lower silo respectively. The invention has the advantages of simple structure, uniform mixing, no power mixing, reduced shear damage of metal powder and good dispersion effect of metal powder.

Description

technical field

[0001] The invention relates to a material mixing device, in particular to an initial mixing device for PVC metallized heat shrinkable film material. Background technique

[0002] The metal powder pigments used in the preparation of metallized plastic films are mostly soft metals, such as the most commonly used aluminum powder (silver color) and copper zinc powder (gold color), which are generally micron-sized fine powders, which are prone to agglomeration and poor dispersion. At the same time, the high shear force during processing will deform the metal pigments and affect the alignment effect of pigment particles, resulting in differences in hue and color, resulting in quality problems for metallized films. In addition, the amount of metal powder is small, generally 0.5-2.0 parts by mass (100 parts of PVC resin), and its physical properties are quite different from other components of the PVC heat shrinkable film formulation system, and its compatibility is...

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