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Haitian is recognized for its cost-effective injection molding services. They leverage their efficient production processes and economies of scale to offer competitive pricing without compromising on product quality or customer satisfaction.

PA66 has good comprehensive performance, high strength, good rigidity, impact resistance, oil and chemical resistance, wear resistance and self-lubrication, especially hardness, rigidity, heat resistance and creep performance. PA66 is more used for production of industrial yarns such as cords because of its higher strength than PA6.

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Ningbo Haida Plastic Machinery Co., Ltd, commonly known as Haida Machinery, is a Chinese company specializing in the design, manufacturing, and distribution of plastic injection molding machines. The company was established in 1992 and is headquartered in Ningbo, Zhejiang Province, China.

With the development of modified nylon technology becoming more mature, the application range of PA6 and PA66 is gradually expanding. Many plastic mold factories or units that use nylon injection molding materials have no clear distinction between PA6 and PA66. In addition, the appearance of PA6 and PA66 are very similar. The obvious difference caused a lot of confusion. How to distinguish between PA6 and PA66 and how to choose?

Rilong Mold Co. Ltd., also known as Rilong Precision Mold, is a Chinese company specializing in the design and manufacturing of precision molds for the plastic injection molding industry. Established in 1996, the company is headquartered in Shenzhen, Guangdong Province, China. Rilong stands out for its commitment to affordability without compromising on product quality.

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Compared with PA66, PA6 is easy to process and form, has good gloss on the product surface, wide temperature range, but high water absorption rate and poor dimensional stability. It has low stiffness, low melting point, long-term use in harsh environments and sufficient stress in a wide temperature range. The continuous use temperature is 105°C.

PA6: 80~90℃. Mold temperature significantly affects crystallinity, which in turn affects mechanical properties of part. For thin-walled, longer-flowing parts, it is also recommended to apply higher mold temperatures. Increasing mold temperature increases strength and stiffness of part, but reduces toughness. If wall thickness is greater than 3mm, it is recommended to use a low temperature mold of 20~40℃. For glass reinforcement mold temperature should be greater than 80℃.

Husky Injection Molding Systems (Shanghai) Co. Ltd is a subsidiary of Husky Injection Molding Systems Ltd, a leading global supplier of injection molding equipment and services. The company was established in 1953 and has its headquarters in Bolton, Ontario, Canada.. They prioritize efficiency and process optimization to minimize overhead costs, allowing them to provide clients with competitive pricing while adhering to stringent quality standards.

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1. When high temperature resistance is not required to reach 187 degrees or more, please use PA6+GF, which is more cost-effective and easy to process.

PA6 absorbs moisture easily, so special attention should be paid to drying before processing. If material is supplied in a waterproof material, container should be kept closed. If humidity is greater than 0.2%, it is recommended to dry in hot dry air above 80℃ for 3-4 hours. If material has been exposed to air for more than 8 hours, it is recommended to dry at 105℃ for 1-2 hours or more. It is best to use a dehumidifying dryer.

Donghua Machinery Ltd, also known as Ningbo Donghua Machinery Co. Ltd., is a Chinese company specializing in the design, manufacturing, and distribution of plastic injection molding machines. The company was founded in 1982 and is headquartered in Ningbo, Zhejiang Province, China. They offer flexible pricing options, including low-volume production runs, allowing smaller companies to access high-quality injection molding services at affordable rates.

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Founded in 2014, with headquarter in Shanghai, China. IN3DTEC specializes in providing affordable manufacturing services including 3D Printing, CNC machining, and injection molding solutions to a wide range of industries. Their streamlined operations, optimized material utilization, and lean manufacturing practices contribute to their ability to offer cost-effective services. IN3DTEC has built a reputation for offering budget-friendly injection molding service.

The melting point of PA66 is 260 to 265°C, and the glass transition temperature (dry state) is 50°C. The density is 1.13~1.16 g/cm3. PA6 is a translucent or opaque milky white crystalline polymer particle with a melting point of 220°C, a thermal decomposition temperature greater than 310°C, a relative density of 1.14, and a water absorption rate (24°C water for 24 hours) of 1.8%. It has excellent wear resistance and self-lubricity. . It has high mechanical strength, good heat resistance and electrical insulation properties, excellent low temperature performance, good self-extinguishing and chemical resistance, especially excellent oil resistance.

PA6 engineering injection moulding materials have high tensile strength, good impact resistance, excellent wear resistance, chemical resistance and low friction coefficient. They can be modified by glass fiber, mineral filler modification and flame retardant. It makes it more comprehensive, mainly used in automotive industry and electronic appliances by plastic mold factory.

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Since solidification time of PA6 and PA66 is very short, position of gate is very important. Gate aperture should not be less than 0.5*t (t is thickness of injection molded parts). If a hot runner is used, gate size should be smaller than with a conventional runner because hot runner can help prevent premature solidification of material. If a submerged gate is used, minimum diameter of gate should be 0.75 mm.

Injection molding is a widely utilized manufacturing process for the production of plastic components. China has become a global hub for injection molding, with numerous companies offering cost-effective services without compromising on quality. In this blog, we will explore the top 10 Chinese injection molding companies that provide affordable solutions, ensuring competitive pricing while maintaining reliable and high-quality services.

If material of PA66 is sealed before processing, then there is no need to dry. If storage container is opened, it is recommended to dry in a hot, dry air at 85℃. If humidity is greater than 0.2%, it is also necessary to carry out vacuum drying at 105℃ for 1 to 2 hours. It is best to use a dehumidifying dryer. Molding temperature: 260~310℃, 280~320℃ for enhanced varieties.

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PA66: 80℃ is recommended. Mold temperature will affect crystallinity, which will affect physical properties of product. For thin-walled injection molded parts, if a mold temperature lower than 40℃ is used, crystallinity of injection molded parts will change with time. In order to maintain geometric stability of injection molded parts, annealing treatment is required.

Zhejiang Sound Machine Manufacturing Co., Ltd, commonly known as Sound Machinery, is a Chinese company specializing in the design, development, and manufacturing of plastic injection molding machines. The company was founded in 2009 and is headquartered in Taizhou, Zhejiang Province, China

Chen Hsong Holdings Limited is a manufacturer and supplier of plastic injection moulding equipment and systems. The company was established by Dr. Chiang Chen in a small village workshop in Hong Kong in 1958. Chen Hsong specializes in providing injection molding services for small to medium-sized production runs.

Craftfac Machinery Ltd, also known as Craftfac., is a Chinese company which has headquarter in shanghai, founded in 2002. Craftfac specializing in They offer flexible pricing options, including low-volume production runs, allowing smaller companies to access high-quality injection molding services at affordable rates.

Chemical and physical properties of PA6 are similar to those of PA66. However, has a low melting point and a wide process temperature range. It has better impact resistance and solubility resistance than PA66, but it is also more hygroscopic. Because many of quality characteristics of injection molded parts are affected by hygroscopicity, this should be taken into account when designing products using PA6. In order to improve mechanical properties of PA6, various modifiers are often added. Glass is the most common additive, and sometimes synthetic rubber is added to improve impact resistance. For products without additives, PA6 shrinks between 1% and 1.5%. Addition of a glass fiber additive reduces shrinkage to 0.3% (but slightly higher in direction perpendicular to flow). Shrinkage of molded assembly is mainly affected by crystallinity and hygroscopicity of material.

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The Chinese injection molding industry is home to a diverse range of companies that offer affordable services without compromising on quality. The top 10 companies highlighted in this blog understand the importance of cost-effectiveness and have implemented various strategies, such as process optimization, lean manufacturing, and value engineering, to provide competitive pricing. By choosing one of these reputable companies, businesses can access reliable injection molding services at affordable rates, contributing to their success in today’s competitive market.

Burned with burned wool and nails, PA6 is a light yellow flame, and PA66 is a blue flame. PA6 has good toughness, is cheaper than PA66, and has a low melting point (225 degrees). PA66 has good strength, wear resistance and high melting point (255 degrees).

Commonly known as Haitian, is one of the largest and most prominent injection molding machine manufacturers in the world. The company was established in 1966 and is headquartered in Ningbo, China. Haitian has a strong global presence, with production facilities and sales offices located in more than 130 countries.

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Zhong tian is a Chinese manufacturing company located in Guangdong, China. Founded in 2007. It specializing in rapid prototyping, and injection molding services.  specializes in providing injection molding services for small to medium-sized production runs, with affordable price.

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