Seach This Blog
Tag Cloud
AOI Baking BGA Burn/In(B/I) Carrier Component drop/detachment Concept DFx EDX/EDS/SEM ENIG FATP Flux FVT Gold HASL HIP(Head-In-Pillow) HotBar ICT IMC LTS Manufacturing glossary metal dome MFI newbie NWO(Non-Wet-Open) OSP Oxidation Panel & De-panel PIH Popcorn-Effect Problem analysis & solving PTF Red Dye Penetration Reliability Short circuit Solder broken crack Soldering Solder paste Stencil Temperature Profile Troubleshooting V-cut Warpage Wave-soldering X-raySponsor
Categories
- Connector
- Corrugated Paper
- Design
- EDX/EDS/SEM/IMC/FTIR,
- Fundamental Science
- Glue/adhesive/epoxy/underfill,
- Keypad
- Management
- Manufacture
- Moisture Sensitive
- PCB/FPC/PTF
- Personal Opinion
- Plastic
- Process
- Product Introduction
- Quality
- Reliability
- Role & Responsibility
- SMT
- Soldering
- Test/Inspection
- Uncategorized
Bookmarks
Histats
Statcounter
Email Subscription
Author Archives: WorkingBear
Dec19
7 Ways to Identify if a Plastic Factory is Using Re-grind Resin
It’s an open secret in the plastic injection molding industry that re-grind resin is often added during injection. Some manufacturers even claim that, given the current competitive environment and cost-cutting pressures, it’s impossible to make a profit without using some … Continue reading
Dec12
Why Re-grind Resin in Plastic Injection Molding Causes Degradation and Weakens Strength
The use of re-grind resin and recycled material in plastic injection molding is a persistent challenge for engineers. The more re-grind resin or recycled material is added, the more severe the degradation of the plastic becomes. This degradation weakens the … Continue reading
Dec05
7 Common Reasons for Elevated MFI (Melt Flow Index) in Plastic Resin Testing
Workingbear’s company recently encountered a quality issue with a plastic product. The problem was, “Why is it that products made from the same type of plastic resin sometimes show normal MFI (Melt Flow Index) values, while others have unusually high … Continue reading
Nov28
Understanding Melt Flow Index (MFI) for Quality Control in Plastic Injection Molding
The “Melt Flow Index” (MFI) of plastic refers to the weight (in grams) of molten plastic that flows through a standardized tube with a specific diameter under a defined load (in kilograms) and temperature (in °C) within a set period … Continue reading
Nov21
What Are PCB Cross-out Boards (X-out Boards)?
In the PCB industry, there is a specific term called “Cross-out boards” or “X-out boards” to indicate that a panel of PCBs contains defective boards. The term “Cross” refers to marking these defective boards with an “X” symbol.
