
1. コアロジック: Process & Mold Optimization Based on Standard Troubleshooting
Precise Tuning of Injection Parameters
Process optimization is the primary solution to sink marks. Priority should be given to optimizing packing settings with multi-stage packing technology:
Apply high pressure (90% of filling pressure) for the initial 2–3 seconds for rapid shrinkage compensation, then reduce pressure to 60% and hold until gate solidification.
Moderately raise mold temperature (10–20℃) and melt temperature (5–10℃) to lower melt viscosity, delay skin layer solidification and reserve sufficient time for internal feeding.
加えて, adopt slow injection speed (≤50 mm/s) over thick-wall zones to build a favorable temperature gradient for shrinkage compensation.
Improvement of Mold Structure & デザイン
If parameter adjustment fails, mold design must be reviewed:
Place gates as close as possible to thick-wall sections and enlarge gate cross-section to extend the feeding channel. Optimize cooling circuit layout with conformal cooling channels or beryllium copper inserts. Keep mold temperature difference between thick and thin wall areas within 5℃ to avoid aggravated shrinkage deviation caused by uneven cooling.
Material Matching
2. Source Factory Advantages: 28 長年にわたる専門知識 & 精密製造
Plastic components for golf club brushes require precise assembly with metal brush heads or magnetic accessories. Tiny sink marks and deformation will lead to assembly failure.
東莞恩永プラスチック & ハードウェアプロダクツ株式会社, 株式会社. stands out as an experienced source manufacturer with 28 長年の業界経験. Our in-house mold workshop and fully automated production lines support sophisticated injection molding processes.
数十年にわたる技術蓄積に裏付けられた, Enyong masters rheological characteristics of various engineering plastics and shrinkage compensation calculation. We leverage advanced Moldflow simulation and precision mold machining to avoid sink mark risks at the design stage.
フルスペクトルのOEMを提供します & ODMのカスタマイズ: anti-slip texture on brush handles, blemish-free high-gloss injection molding, and precise branding logo embedding. One-stop services from R&D to mass production guarantee consistent dimensional stability and premium surface finish on all plastic components.
3. Flexible Fast-Turnaround Delivery for Premium Sporting Goods
Golf accessory buyers enforce strict quality standards, demanding both high production yield and agile supply chain response.
Dongguan Enyong operates a highly elastic flexible production system. Hot-selling standard models are stocked in bulk for immediate shipment, and small-batch rapid reorders are available to capture market trends.
Our combination of rigorous precision craftsmanship and fast lead times enables brand partners to maintain efficient capital turnover with low inventory pressure. によってサポートされています 98% repeat customer rate from reliable product performance, every market opportunity in the golf gear sector translates into sustainable profits.

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