Glass Fiber Reinforced Polypropylene,Long Carbon Fiber Reinforced Polypropylene

Injection Molding Defects and Solutions -- Flash and Burrs 2025-10-17

Flash and Burrs: When the molten material enters the gaps between the mold parting surfaces or the joints between the mold and the slider, excess thin fins or burrs appear on the molded part. 4.1 Causes 4.2 Solutions 4.1.1 Poor closing or misalignment at the parting surface. 4.2.1 Increase clamping force; repair the mold parting surface to ensure tight fitting. 4.1.2 Excessive clearance between th...

Injection Molding Defects and Solutions -- Silver Streaks 2025-10-17

Silver Streaks: Shiny, silvery lines appearing on the surface of the molded product or near the gate along the flow direction. These are caused by excessive moisture or volatile substances in the material, poor adhesion between the melt and the mold, or rapid cooling after the melt has been subjected to excessive shear stress—resulting in needle-like or mica-like streaks. In addition, if the silve...

Injection Molding Defects and Solutions -- Sink marks 2025-10-11

Sink Marks (Depressions) Surface dents or depressions appear on molded parts. This defect occurs when the molten resin shrinks in volume during cooling and solidification but is not sufficiently compensated by additional material. It often appears on the backside of thick sections or behind ribs. Causes (2.1) Solutions (2.2) 2.1.1 Runner or gate too small, or insufficient number of gates. 2.2.1 Im...

Injection Molding Defects and Solutions -- Incomplete filling 2025-10-11

Short shot / Incomplete filling The molten resin cannot completely fill the mold cavity. Causes (1.1) Solutions (1.2) 1.1.1 Injection volume insufficient; not enough material added. 1.2.1 Increase the material feed. 1.1.2 Inadequate plasticizing capacity or insufficient residual material. 1.2.2 Replace the machine or adjust process parameters to increase residual material. 1.1.3 Plastic particle s...

Customer Project: PA12-LCF40 Solution for Wire Rope End Fitting 2025-09-17

Customer Project: PA12-LCF40 Solution for Wire Rope End Fitting body { font-family: 'Inter', sans-serif; line-height: 1.6; color: #333; background-color: #fff; margin: 0; padding: 0; } .container { max-width: 900px; margin: auto; padding: 20px; } h1, h2, h3 { color: #00924f; transition: all 0.3s ease; } h1:hover, h2:hover, h3:hover { color: #006f3b; transform: translateY(-3px); } p { margin-bottom...

A Quick Guide to the Power of Glass Fiber Reinforcement 2025-09-15

When you pick up your phone, take apart an auto part, or look at a home appliance casing, you might not realize that hidden inside these seemingly ordinary plastic products lies a kind of “invisible rebar” — glass fiber (GF). From PP + 20% GF to PA + 60% GF, these reinforcing fibers quietly support the plastic matrix, much like steel bars inside concrete. Today, let’s uncover the mystery of long g...

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Carbon Fiber Composite Applications for Automotive Lightweighting 2025-09-02

With global climate warming and the increasing depletion of fossil fuel resources, promoting green energy and sustainable development has become a global consensus. As a product of modern industrial civilization, the automotive industry is facing unprecedented pressure to save energy and reduce emissions, making vehicle lightweighting an important approach to address these challenges. Among variou...

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Composite Joining Methods: Types and Key Considerations 2025-09-01

Overview Composite joining technology is a critical yet relatively weak link in the design and manufacturing of composite structures. Due to the anisotropy, brittleness, and low interlaminar strength of composites, their joining design differs significantly from metallic structures and requires special attention. The main joining methods can be categorized into three groups: 1. Mechanical Joining ...

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Composite Material Repair: Process, Methods, and Key Points 2025-09-01

Overview Composite material repair refers to the technology of restoring the mechanical properties, structural integrity, and functional performance of composite components (such as carbon fiber reinforced composites and glass fiber reinforced composites) that have been damaged during use or processing (e.g., cracks, delamination, holes, wear). With advantages such as high specific strength and ex...

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