Method for preparing reflective thermal film with high flame retardant property

Through the preparation of PE composite film, beading film and forming a reflective layer, combined with vacuum aluminum plating technology and corona treatment, the problems of poor flame retardant performance and delamination in the existing flame retardant thermal film glue formula are solved, and high flame retardant performance and excellent reflective performance are achieved.

CN119684920APending Publication Date: 2025-03-25ZHEJIANG LONGYOU DAOMING OPTICAL CO LTD
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Patent Information

Application Number
CN202411861081.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-17
Publication Date
2025-03-25

AI Technical Summary

Technical Problem

Flame retardant is added to the existing flame retardant hot film glue formula. The hot melt adhesive film is a conventional Pes or TPU adhesive film. The flame retardant performance is poor after washing, especially the problem of delamination, which cannot meet the flame retardant requirements within 2 seconds.

Method used

By preparing PE composite film, beading film, forming a reflective layer, preparing flame retardant slurry, preparing flame retardant composite adhesive, preparing flame retardant adhesive film layer and pretreatment of flame retardant adhesive film layer, combined with vacuum aluminum plating technology and corona treatment, a reflective thermal film with high flame retardant performance is formed.

Benefits of technology

It achieves high flame retardant performance and excellent reflective performance, enhances the visibility and safety of the thermal film, and avoids delamination problems, meeting the flame retardant requirements within 2 seconds.

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Abstract

The invention discloses a method for preparing a reflective thermal film with high flame retardant property. Comprising the following steps: preparing a PE composite film, preparing a bead planting film, forming a reflective layer, preparing a flame retardant slurry, preparing a flame-retardant composite adhesive, preparing a flame-retardant adhesive film layer, pretreating the flame-retardant adhesive film layer, preparing a semi-finished product of the high-flame-retardant reflective hot pasting film, and putting the semi-finished product of the high-flame-retardant reflective hot pasting film into a drying room for curing treatment. The polyurethane glue in the flame-retardant composite glue is consistent with the polyurethane glue in the flame retardant slurry, so that the flame-retardant glue film layer can be effectively prevented from delaminating.
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