Extrusion flat die head used for producing color bar type products

Abstract

The invention provides an extrusion flat die head used for producing color bar type products. The extrusion flat die head comprises a main die body, an upper middle die body, an upper front die, a lower middle die body, a lower front die and a die core. An extrusion runner and a die lip at the front end are formed between the upper front die and the lower front die. A color bar runner is formed between the upper middle die body and the lower middle die body. An upper base material runner is arranged between the upper front die and the upper middle die body. A lower base material runner is formed between the lower front die and the lower middle die body. The die core is located at the junction of the main die body, the upper middle die body and the lower middle die body. Upper color bar runners are arranged at the contact of the die core and the upper middle die body at intervals. Lower color bar runners are arranged at the contact of the die core and the lower middle die body at intervals. The upper color bar runners and the lower color bar runners are staggered in the breadth direction. A feeding main runner a, a feeding main runner b, a feeding main runner c and a feeding main runner d are sequentially arranged at the rear end of the main die body.

Description

technical field [0001] The invention relates to an extrusion die head, in particular to an extrusion flat die head for producing color bar products. Background technique [0002] Generally, the extrusion flat die head is composed of an upper die body and a lower die body, and a raw material melt channel is formed between the two, usually with a feed port, and the raw material melt enters from the feed port and passes through the extrusion flat die head The opening gap of the extruded product is extruded to form a product, and the raw material of the extruded product is consistent in the width direction, and is composed of the same raw material. If you want to achieve products with different raw materials in the production width direction, you need to improve the structure of the existing extrusion flat die. Existing color strip products can only make two to three sections of color strip area, which can be achieved by using a single-layer flow channel and parallel extrusion ...

AI Technical Summary

Problems solved by technology

Existing color strip products can only make two to three sections of color strip areas, and use a single-layer flow channel to achieve parallel extrusion and mixing of two materials, which obviously cannot meet the application of many occasions

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