PP Core Mat Overview

POLYMER PLM-180 and PLM-250 are premium non-woven PP core mats specifically engineered as the ultimate flow medium for manufacturing high-quality fiberglass sandwich mats (commonly known as flow mats). Made of continuous needle-punched chopped polypropylene fiber strands without any binders, this core material is designed for optimal compatibility with fibreglass polyester resin, vinyl ester, and high-performance epoxy resin systems.

By providing exceptional resin permeability, our fast resin infusion core material significantly accelerates resin transfer speed and reduces overall volumetric resin consumption. It is highly optimized for closed-mold molding processes such as RTM (Resin Transfer Molding) and vacuum infusion, making it an indispensable component for fabricating lightweight, high-strength composite structures across marine, wind energy, and automotive industries.

Empowering Composite & Infrastructure Manufacturing

Whether you are laying up large marine vessels or manufacturing precision automotive parts, our high-performance PP flow mats secure your competitive edge:

• For RTM & Infusion Fabricators: Leverage our non-woven PP core material for RTM to dramatically increase production throughput. Its fluffiness ensures rapid wet-out, eliminating dry spots and reducing costly rework.

• For Marine & Wind Energy Contractors: Utilize our resin flow mat for vacuum infusion to rapidly build laminate thickness without adding excessive weight. It is perfect for massive structures like boat hulls and wind turbine nacelle covers.

• For Automotive & Flat Profile Suppliers: Achieve a flawless, smooth surface aspect. Our binder-free needle-punched PP flow media leaves no warp or weft marks, ensuring a premium Class-A finish for vehicle parts.

• For Regional Raw Material Distributors: Source directly from a verified lightweight PP core mat manufacturer. We offer custom roll widths, reliable pallet packaging, and highly competitive wholesale pricing for global trade.

Core Performance Advantages

Excellent Flow & Fast Wet-Out

Featuring a fluffy, non-directional structure with absolutely no powder or emulsion binders, the mat guarantees rapid, even resin transfer, vastly improving closed-mold efficiency.

High Uniformity & Stability

Demonstrating rapid spring-back properties, the core material resists displacement and deformation during high-pressure resin injection, ensuring stable lay-up operations.

Cost-Effective Lightweighting

Rapidly builds up laminate thickness without adding unnecessary weight. This directly reduces volumetric resin usage, significantly lowering overall manufacturing costs.

Superior Surface Aspect

Engineered to bond seamlessly with matrices to prevent delamination. The absence of warp/weft crossing marks ensures FRP products maintain a premium, smooth surface finish.

General Data & Specifications

Typical Industrial Applications

Frequently Asked Questions (FAQ)

Instructions for Use and Storage Conditions

Roll Width: Standard widths are 1270mm and 2800mm. Custom sizes depend on specific manufacturing needs and are available from 200mm up to 3300mm to minimize trim waste.

Packing: PP core material is tightly wound on a sturdy paper tube (76mm inner diameter), wrapped in moisture-proof plastic film, and packed into cartons. Rolls should be laid horizontally and can be securely palletized for bulk container shipping.

Storage: Store the product in a cool, dry, and water-proof indoor area. It is highly recommended to maintain room temperature at 15℃ to 35℃ with humidity levels between 35% and 65%. Always keep the mat in its original sealed packaging until use to prevent moisture absorption and ensure optimal resin flow.