Special film blowing device for multi-layer co-extrusion of environment-friendly rich mineral paper

Abstract

The invention discloses a special film blowing device for multi-layer co-extrusion of environment-friendly rich mineral paper, and belongs to the technical field of novel material equipment manufacturing. The special film blowing device is formed by connecting a main extruder, an inner-layer auxiliary extruder, an outer-layer auxiliary extruder, a rotary die head and a control system, wherein the rotary die head is formed by connecting an outer die nozzle, an inner die nozzle, an outer die body, an outer core, a middle core, an inner core, a spreader plate and a sprue spreader; the outer core, the middle core and the inner core are sequentially and rotationally connected into the outer die body from outside to inside to form an outer-layer runner, a middle-layer runner and an inner-layer runner; the discharging end of the outer die body is connected with the outer die nozzle and the inner die nozzle to form a discharging runner; and the feeding end of the outer die body is connected with the spreader plate and the sprue spreader to convey feeding materials. The device is specially used for co-extrusion film blowing production of multi-layer environment-friendly rich mineral paper; one main extruder and two auxiliary extruders are matched with the three-layer rotary die head for co-extrusion and then film blowing forming, and the rich mineral paper with different functions is compositely produced in cooperation with the design of the three layers of runners; and moreover, the production efficiency is high, and the application range is wide.

Description

technical field [0001] The invention relates to a film blowing manufacturing process equipment for stone paper, in particular to a special film blowing device for environmental protection stone paper multi-layer co-extrusion, which belongs to the technical field of new material equipment manufacturing. Background technique [0002] Stone paper is a new type of material between paper and plastic, which can replace some traditional functional paper, professional paper, and most of the traditional plastic packaging; it has low cost and controllable degradation The characteristics can save a lot of cost for the user, and will not produce pollution. The stone paper industry, an environmentally friendly new material, draws a wide range of materials, and there is a broad space for product upgrades, technology upgrades, and application fields. [0003] The original stone paper is produced by 80% CaCO3 and 20% PE. The multi-layer co-extrusion technology of environmentally friendly s...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the problem of single product and narrow application range of stone paper in the production of blown film papermaking equipment, and provide a special film blowing device for environmental protection stone paper multi-layer co-extrusion, using one main and two auxiliary extruders With the three-layer rotary die head, it is specially used for the co-extrusion blown film production of multi-layer environmentally friendly stone paper. Under the condition that the inherent characteristics of the stone paper remain unchanged, different materials can be added to the inner and outer layers according to requirements to meet various needs. Blown film After molding, stone papers for different purposes can be produced, which can meet the blown film production application of various types of environmentally friendly stone papers of 90um-150um, and are easy to operate and high in production efficiency. They are widely used in food and drug packaging, reflective films, composite films and other fields.

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