A concrete formwork material using a foamed extruded molding material made from waste synthetic resin, and a method for manufacturing the same.

A recycled synthetic resin foam formwork material with marking and adhesive tape facilitates easy dismantling and reuse, addressing cost and adhesion issues while promoting sustainability in construction.

JP2026085972APending Publication Date: 2026-05-26平形 将史
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
平形 将史
Filing Date
2024-11-14
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Conventional concrete formwork materials made from synthetic resins like polypropylene and acrylic are expensive, limited to standardized structures, and cause adhesion issues with concrete, leading to complex reshaping and environmental concerns due to wood usage.

Method used

A concrete formwork material using recycled synthetic resin foam, marked and cut to fit specific dimensions, with strong adhesive tape applied for easy dismantling and reusability, and a manufacturing process involving resin ingot production, mixing, granulation, and extrusion molding to create a flexible and cost-effective solution.

Benefits of technology

The material reduces processing time by up to 1/3, lowers costs by 1/3, and facilitates easy demolding and reuse, aligning with sustainability goals by using recycled plastics and minimizing environmental impact.

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Abstract

The present invention provides a concrete formwork material that has low affinity with concrete, is low-cost, and whose dimensions can be freely adjusted at civil engineering, building, and construction sites, as well as a method for manufacturing the same. [Solution] A concrete formwork material using a long, plate-shaped extruded foamed synthetic resin material, characterized in that a marking line can be engraved on the surface of the concrete formwork material at any position perpendicular to its longitudinal direction along the entire width of the concrete formwork material using a marking needle or the like, the concrete formwork material can be easily broken along the marking line, and a strong adhesive tape is attached to the back surface of the concrete formwork material where the marking line can be engraved along its entire longitudinal length.
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