聚酯长丝纺粘针刺非织造土工布400g具有以下功能：

排水功能：聚酯长丝纺粘针刺非织造土工布400g具有良好的排水性能，可以有效排除地下水和雨水，保持土壤的干燥。

隔离功能：土工布可以有效隔离不同颗粒大小的土层，防止土壤颗粒互相渗透和混合，保持土壤结构的稳定性。

反滤功能：聚酯长丝纺粘针刺非织造土工布400g能够阻止土壤颗粒的渗透，同时保持水分的自然渗透。

加筋功能：土工布作为加筋材料，能够提高土壤的抗剪强度和抗拉强度，增加土体的稳定性。

防护功能：土工布能够有效地保护土壤和地基，避免受到外界环境的侵蚀和损害。

此外，聚酯长丝纺粘针刺非织造土工布400g还具备出色的断裂强度，达到了20KN/m，足够承受一定的拉力和挤压力。宽幅方面，可提供2m、3m和6m的选择，适应不同工程需求。

choosing the right product for your project. No matter you need it for drainage, separation, filtration, reinforcement, or protection, the high-quality polyester filament spunbond needle punched nonwoven geotextile fabric weighing 400g provided by Dezhou Runze Geotextile Materials Co., Ltd. is undoubtedly an excellent choice. With a price of only 3.60 yuan per square meter, it offers both quality and value.

The geotextile fabric has the following functions:

Drainage: The polyester filament spunbond needle punched nonwoven geotextile fabric has excellent drainage performance, effectively removing underground water and rainwater, and keeping the soil dry.

Separation: The geotextile fabric can effectively separate soil layers of different particle sizes, preventing the intermixing and infiltration of soil particles and maintaining soil structure stability.

Filtration: The geotextile fabric acts as a filter, preventing soil particles from passing through while allowing the natural permeation of water.

Reinforcement: As a reinforcement material, the geotextile fabric enhances the shear and tensile strength of soil, increasing soil stability.

Protection: The geotextile fabric provides effective protection for soil and foundations, preventing erosion and damage from external factors.

In addition, the polyester filament spunbond needle punched nonwoven geotextile fabric weighing 400g boasts an impressive tensile strength of 20KN/m, making it capable of withstanding tension and compression forces. It is available in widths of 2m, 3m, and 6m, catering to different project requirements.