This invention relates to a sealed support profile with a built-in segmented, encapsulated
moisture-absorbing medium and its manufacturing process, belonging to the field of composite
building material profile production technology. This profile is made from composite
fiber raw materials through room-temperature
extrusion using a specially customized mold, followed by simultaneous gluing and shaping. The internal hollow cavity contains segmented, independently wrapped rod-shaped
moisture-absorbing media made of non-
woven fabric, with expansion space reserved during sealing. A microporous membrane combined with end-sealing forms a multi-layered
moisture-proof structure. The product is divided into ordinary heat-insulating and fire-resistant heat-insulating types according to the base material formulation; the appearance color is purely decorative. This invention enables integrated
continuous production, eliminating the need for secondary opening and filling. Defective products can be crushed and recycled, effectively solving problems such as easy deformation, media expansion damaging the profile, complex processes, and inconvenient
functional identification in existing products. It has significant advantages such as stable structure,
moisture resistance and durability, energy saving and labor saving, and cost reduction and efficiency improvement.