China SAMTION INTERNATIONAL LIMITED company news

An efficient exhaust system is a critical, often overlooked, aspect of injection mold design, especially critical in high-speed molding where trapped air cannot escape quickly enough. (1) Sources of Gas in the Mold Cavity: 1) Air present in the runner system and cavity. 2) Water Vapor generated from ... Read More

In material science, toughness and rigidity are often opposing properties. Rigidity (Stiffness) refers to a material's resistance to deformation under load, quantified by a high Elastic (Young's) Modulus. A rigid material deforms very little under stress. Toughness is the material's ability to ... Read More

Color inconsistency in injection molded parts is a common quality issue, primarily stemming from inadequate dispersion or unstable processing conditions. The main causes and corresponding solutions are: (1) Poor Colorant/Pigment Dispersion: This often causes streaks or a "mica-like" pattern, ... Read More

For PC processing, typical mold temperatures are 80–100°C (up to 100–130°C for glass-filled grades). Gate design includes pin gates for small parts, with depth around 70% of wall thickness; ring or rectangular gates are also used. Larger gates help minimize shear-induced defects. Vent depths should ... Read More

Glass fiber-reinforced PC faces challenges like high viscosity-induced filling issues, uneven mixing, and surface defects. The “floating fiber” problem remains a key concern in injection molding, affecting product appearance. During molding, differences in density and flow between glass fibers and ... Read More

PC plastic’s unique characteristics—including high transparency, impact resistance, and insulation—enable its wide use across industries. In optical lighting, it serves in lamp covers, protective glazing, and aircraft windows. For electronics, its insulation suits connectors, coil bobbins, and ... Read More

Polybutylene Terephthalate (PBT) is a high-performance crystalline engineering thermoplastic valued for its unique combination of properties. Its key characteristics include very low moisture absorption, which contributes to exceptional dimensional stability in varying humidity conditions. It ... Read More

Polyamide 66 (PA66) and Polyamide 6 (PA6) are two prominent members of the nylon family with distinct properties. PA66 has a higher melting point, typically between 260–265°C, and a glass transition temperature around 50°C in the dry state, with a density of 1.13–1.16 g/cm³. PA6 appears as ... Read More

Plastics are broadly categorized into general-purpose plastics and engineering plastics, based on their performance characteristics and typical applications. Definition: General-purpose plastics are characterized by their high production volume, wide range of uses, excellent formability, and low ... Read More

PA6 and PA66 share similar chemical and physical profiles, but critical differences exist, especially regarding moisture absorption, which profoundly affects processing and final part performance. PA6 (Polyamide 6) exhibits properties akin to PA66 but with a lower melting point and a broader ... Read More