PLA (Polylactic Acid) PLA, also known as polylactic acid, is a biodegradable and environmentally friendly polymer. Its production process is pollution-free, and the material can naturally degrade, making it one of the most representative green plastics. The structure of PLA has a significant impact on its heat resistance, toughness, mechanical strength, degradability, and biocompatibility. Among these, heat resistance is a key limitation. PLA molecular chains contain only one methylene group, forming a spiral structure with low chain mobility. As a result, PLA exhibits slow crystallization during injection molding, leading to low crystallinity and poor heat resistance. Additionally, during thermal processing, ester bonds may break, generating terminal carboxyl groups that accelerate thermal degradation through autocatalysis. LGF Reinforced PLA Long fiber reinforcement significantly enhances the performance of PLA. Fibers act as a structural skeleton within the polymer matrix, restricting molecular chain movement under heat and thereby improving thermal resistance. Various fibers can be used for PLA reinforcement, including: Natural plant fibers (sisal, flax, bamboo, coconut fiber, wood fiber) Animal fibers (silk) Mineral fibers (basalt fiber) Synthetic fibers (carbon fiber, glass fiber) Among these, carbon fiber and glass fiber are widely applied due to their high strength and modulus, while natural fibers are gaining attention for their sustainability and biodegradability. Studies show that reinforced PLA composites can achieve a Vicat softening temperature exceeding 140°C, significantly improving thermal performance compared to pure PLA. Comparison with Short Fiber (SGF) Compared to short fiber reinforced materials, long glass fiber (LGF) composites offer superior mechanical performance: 1–3 times higher toughness 50–100% increase in tensile strength and stiffness Better suitability for large structural parts Injection Molding Laboratory Warehouse Certifications Xiamen LFT Composite Plastic Co., Ltd. Xiamen LFT Composite Plastic Co., Ltd. specializes in long fiber reinforced thermoplastics (LFT & LFRT), including Long Glass Fiber (LGF) and Long Carbon Fiber (LCF) materials. Our materials are suitable for injection molding, extrusion (LFT-G), and direct molding (LFT-D). Fiber lengths can be customized from 5–25 mm according to customer requirements. Our products are manufactured using advanced continuous fiber impregnation technology and are certified under ISO9001 and IATF16949 systems, with multiple patents and registered trademarks.

PLA itself is an environmentally friendly thermoplastic, known for its biodegradability. However, it has limited mechanical properties, such as strength, toughness, and heat resistance. By incorporating long glass fibers, the performance of PLA is significantly improved, making it suitable for demanding applications.

PLA Plastic PLA (polylactic acid) is a bio-based polyester and one of the most promising "green plastics" due to its biodegradability, biocompatibility, and high mechanical strength. PLA products can fully degrade into CO₂ and water via microorganisms, and are non-toxic and non-irritating. Mechanically, PLA is comparable to polypropylene, while its gloss, clarity, and processability resemble polystyrene. Its lower processing temperature allows production via injection molding, extrusion, blow molding, spinning, and other common plastic processing methods. PLA is widely applied in disposable plastics, packaging, fibers, nonwovens, chemical, medical, pharmaceutical, and 3D printing industries. PLA is increasingly recognized as a key material to reduce plastic pollution. PLA Reinforced Plastic Glass fiber (fiberglass) is an inorganic material with excellent insulation, heat resistance, corrosion resistance, and high mechanical strength. It is widely used to reinforce composite materials. Long glass fibers are typically over 10mm in length. Long Glass Fiber Reinforced PLA (LGFPLA) contains 10–25mm glass fibers forming a 3D structure during molding. It belongs to long fiber thermoplastics (LFT). Pellet sizes are generally 12mm (injection molding) or 25mm (compression molding). Glass fiber content ranges from 20% to 60%, and colors can be customized. LGF & SGF Advantages Compared with short fiber reinforced thermoplastics, LFT has: Longer fiber length for superior mechanical properties High specific stiffness and strength, excellent impact resistance, ideal for automotive parts Improved creep resistance, dimensional stability, and high precision in molding Excellent fatigue resistance Better stability in high temperature and humid environments Minimal fiber damage during molding due to fiber mobility Technical Details Number Color Length Fiber Content Package Sample Port of Loading Delivery Time PLA-NA-LGF Natural or customized 6-25mm 20%-60% 25kg/bag Available Xiamen Port 7-15 days after shipment Lab & Factory Xiamen LFT Composite Plastic Co., Ltd. Xiamen LFT Composite Plastic Co., Ltd., founded by a thermoplastic composite industry veteran, specializes in the development and production of long glass/carbon fiber reinforced thermoplastic plastics (LFT-G, LFRT, LFT). Our products are lightweight, high-strength, impact- and heat-resistant, recyclable, and eco-friendly. Compared to traditional materials, they offer better corrosion resistance, lower cost, and superior molding performance. Our LFT series (LGF & LCF) include PP, PA6, PA66, PPA, PA12, TPU, PBT, PLA, PET, PPS, and PEEK. Applications cover home appliances, aerospace, automotive, military, and medical equipment, as well as sports goods and daily necessities. Products include gears, rollers, pulleys, pump impellers, fan blades, and more.

PLA itself is an environmentally friendly thermoplastic, known for its biodegradability. However, it has limited mechanical properties, such as strength, toughness, and heat resistance. By incorporating long glass fibers, the performance of PLA is significantly improved, making it suitable for demanding applications.

PLA itself is an environmentally friendly thermoplastic, known for its biodegradability. However, it has limited mechanical properties, such as strength, toughness, and heat resistance. By incorporating long glass fibers, the performance of PLA is significantly improved, making it suitable for demanding applications.

PLA Plastic | Long Glass Fiber Reinforced PLA (PLA-LGF) What is PLA? Polylactic acid (PLA) is a biodegradable and eco-friendly polymer plastic, produced via pollution-free processes. PLA can naturally degrade and recycle in the environment, making it an ideal green polymer material and one of the most representative biodegradable plastics. PLA Structure and Heat Resistance The molecular structure of PLA affects its heat resistance, toughness, mechanical strength, degradability, and biocompatibility. PLA has a spiral molecular chain with low activity, resulting in slow crystallization after injection molding and relatively poor heat resistance. During hot processing, ester bonds may break partially, generating terminal carboxyl groups that accelerate thermal degradation. Long Glass Fiber (LGF) Reinforced PLA Reinforcing PLA with long glass fibers (PLA-LGF) improves mechanical strength, rigidity, and heat resistance. The fibers act as skeleton support, restricting polymer chain movement during heating and increasing thermal stability. Types of Fibers for PLA Reinforcement Fibers used for PLA enhancement include: Natural plant fibers: sisal, flax, linen, bamboo, coconut, wood fiber Animal fibers: silk Mineral fibers: basalt fiber Chemical fibers: glass fiber, carbon fiber Glass fiber and carbon fiber are widely used due to their high strength and modulus, while natural fibers are favored for biodegradability and renewable sources. Modified fibers blended with PLA have shown Vicat softening temperatures exceeding 140°C. Compared with Short Fiber (SGF) Long glass fiber reinforced PLA demonstrates superior mechanical properties compared with short fiber (SGF) reinforced PLA. It is more suitable for large structural parts, offering 1–3 times higher toughness and 0.5–1 times greater tensile strength and rigidity. Injection Molding of PLA-LGF Lab & Testing Warehouse & Storage Certification About Xiamen LFT Composite Plastic Co., Ltd. Xiamen LFT Composite Plastic Co., Ltd. specializes in long fiber reinforced thermoplastics (LFT) including PLA

PLA & LGFPLA – Eco-Friendly and Reinforced Bioplastics PLA (Polylactic Acid) is a non-natural polyester and one of the most promising "green plastics." Known for its biocompatibility, biodegradability, and high mechanical strength, PLA can be completely degraded by microorganisms into CO₂ and water, making it non-toxic and environmentally friendly. PLA offers mechanical properties similar to polypropylene, while providing the gloss, clarity, and processability of polystyrene. With a lower processing temperature than polyolefins, PLA can be molded via injection molding, extrusion, blow molding, spinning, and other general plastic processes. Its applications range from disposable packaging and fibers to nonwovens, and extend to medical, chemical, pharmaceutical, and 3D printing industries. Long Glass Fiber Reinforced PLA (LGFPLA) Glass fiber is an inorganic non-metallic material with excellent insulation, heat resistance, corrosion resistance, and mechanical strength. When used to reinforce PLA, it creates Long Glass Fiber PLA (LGFPLA), a high-performance thermoplastic composite with glass fibers 10–25mm long, forming a 3D structure for superior strength and stability. LGFPLA is available as columnar pellets, typically 12mm (for injection molding) or 25mm (for compression molding) in length, with glass fiber content from 20% to 60%. Colors can be customized to match client requirements. Advantages of LGF vs SGF (Long Fiber vs Short Fiber PLA) Longer fiber length improves mechanical properties and part durability. High specific stiffness and strength, with excellent impact resistance — ideal for automotive parts. Improved creep resistance and dimensional stability for precise molding. Outstanding fatigue resistance and long-term reliability. Stable performance in high temperature and humid environments. Minimal fiber damage during molding due to fiber mobility within the mold. Technical Specifications Product Number Color Length Fiber Specification Package Sample Port of Loading Delivery Time PLA-NA-LGF Natural or customizable 6–25mm 20%–60% 25kg/bag Available Xiamen Port 7–15 days after shipment Lab & Factory Xiamen LFT Composite Plastic Co., Ltd. Xiamen LFT Composite Plastic Co., Ltd. specializes in developing and producing long glass fiber (LGF) and long carbon fiber (LCF) reinforced thermoplastic composites (LFT-G, LFRT, LFT). Our materials are lightweight, high-strength, impact-resistant, and environmentally friendly, offering excellent corrosion and chemical resistance along with superior molding performance. Our products are used across industries including automotive, aerospace, military, electrical, medical, sports equipment, and daily consumer goods, producing components such as gears, rollers, pulleys, pump impellers, fan blades, and more.

PLA (Polylactic Acid) is a semicrystalline thermoplastic polyester. It is derived from renewable sources and is therefore classified as a bioplastic.

Polyphthalamide is a high-performance resin and member of the nylon family with exceptional thermal, mechanical, and physical properties. It is hygroscopic, opaque, semicrystalline, and can be used in plastic injection molding. Most PPA are filled with glass fiber or carbon fiber to enhance stiffness for high-temperature applications. As a result, PPA is often used in applications in place of metal or higher-priced thermoplastic.

PLA is a high-strength but brittle plastic that cannot be used in applications that experience shock loads. The lactic acid building blocks of PLA can be made from fermented plant starch, like corn, under controlled conditions. It takes less energy to produce PLA than petroleum-based thermoplastics, making it relatively eco-friendly. PLA is often regarded as being biodegradable. 

The addition of long glass fibers enhances the mechanical properties of PLA, such as strength, stiffness, and impact resistance.  This makes LFT-PLA ideal for applications requiring high load-bearing capacity.

PLA itself is an environmentally friendly thermoplastic, known for its biodegradability. However, it has limited mechanical properties, such as strength, toughness, and heat resistance. By incorporating long glass fibers, the performance of PLA is significantly improved, making it suitable for demanding applications.