EVA adhesive film extrusion equipment

By introducing a stirring motor-driven propeller and a multi-fan cooling design into the EVA film extrusion equipment, the problem of insufficient mixing of EVA particles and additives was solved, improving the purity and cooling efficiency of the film and reducing the scrap rate.

CN224348351UActive Publication Date: 2026-06-12HANGZHOU DONGGUANG TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
HANGZHOU DONGGUANG TECH CO LTD
Filing Date
2025-07-18
Publication Date
2026-06-12

AI Technical Summary

⚠Technical Problem

In traditional EVA film extrusion equipment, EVA particles and additives are not mixed sufficiently, which easily leads to agglomeration, resulting in bubbles and thickness fluctuations in the extruded film and a high scrap rate.

⚗Method used

The design employs an extrusion assembly and auxiliary components. The extrusion assembly includes a propeller driven by a stirring motor for mixing raw materials, a feeding knife for controlling material conveying, and a filter plate for intercepting impurities. The auxiliary components provide an annular air curtain for cooling through multiple sets of fans and air guide rings, and adjust the cooling intensity.

🎯Benefits of technology

It achieves thorough mixing of EVA particles and additives, avoids clumping, improves the purity of the melt and thickness tolerance control, enhances cooling efficiency, prevents film warping, and reduces scrap rate.

✦ Generated by Eureka AI based on patent content.
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Abstract

The utility model relates to industrial manufacturing technical field, and disclose a kind of EVA adhesive film extrusion equipment, the EVA adhesive film extrusion equipment, including extrusion pipe, fixed mounting is installed on the extrusion pipe installation ring, fixed mounting is installed on the extrusion pipe installation ring, fixed mounting is installed on the installation ring support, extrusion assembly is provided on the extrusion pipe, and the extrusion assembly includes feed hopper.This EVA adhesive film extrusion equipment, to make the device more satisfy photovoltaic package and other high-precision scene demand, by being provided with extrusion assembly, the component cooperation stirring motor drives the propeller on straight rod in feed hopper form spiral stirring flow field, EVA particle and additive are fully mixed, avoid the extrusion defect caused by raw material caking, simultaneously servo motor drives material feeding knife control material conveying, cooperation adjustment filter plate in die head intercepts impurity, improves adhesive film melt purity, and the sliding design of plug rod in connecting groove can fine adjustment die head flow passage sectional area.
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