Blood Collection Tube Cap Injection Mold

Product Specification

Single‑use medical plastic components impose extremely strict requirements on mold stability and repeatability. Even tiny defects such as burrs, dimensional fluctuation or inconsistent weight can directly affect product assembly, sealing performance and final clinical application.

Blood collection tube caps are critical sterile medical consumables designed for vacuum sealing, blood sample isolation and contamination prevention. Mostly molded from medical‑grade PP and PE, these thin‑walled micro components require ultra‑precise dimensions, burr‑free surfaces and stable sealing performance. As a professional medical mold manufacturer certified with ISO13485, Vios delivers high‑consistency, multi‑cavity injection molds to support standardized mass production of medical tube caps.

Applicable Product Types
Snap‑on tube caps — Press‑fit structure for fast assembly
Threaded tube caps — Rotary locking structure for high sealing tightness
Universal protective caps — Standard flat caps for general blood collection tubes

Customizable Cavity Options
Flexible cavity configurations ranging from 12‑cavity, 16‑cavity, 24‑cavity, 32‑cavity, 48‑cavity to 64‑cavity hot‑runner layouts perfectly match prototype verification, medium‑volume and large‑scale production demands. Each mold is structurally optimized according to client 3D data to ensure stable assembly and reliable vacuum tightness.

Core Mold‑Design Advantages
Targeting common molding difficulties of tiny thin‑walled parts, we conduct complete CAE flow simulation in the early design phase to balance runner systems and optimize gate distribution. This uniform multi‑cavity filling effectively avoids weight deviation, shrinkage and short‑shot defects. Precision parting surface fitting eliminates tiny burrs on sealing edges, while optimized ejection structure prevents deformation, sticking and stress whitening during demolding. Functional surfaces adopt high‑level mirror polishing to meet medical cleaning and sterile packaging standards.

Quality System & Manufacturing Hardware
All medical mold projects are implemented under standardized ISO13485 quality management with full‑process traceability and standardized component cleaning procedures. Supported by Mazak high‑precision machining centers and Zeiss CMM dimensional inspection, every core and cavity component achieves strict medical‑level tolerance accuracy. Mould manufacturing is completed in controlled dust‑proof workshops, while in‑house ISO8 clean‑room injection capability supports reliable medical‑grade trial production and sample validation.

Beyond blood collection tube cap molds, Vios develops precision multi‑cavity tooling for a wide range of disposable medical consumables, including test tube housings, diagnostic cartridge parts, connector fittings and other thin‑wall medical plastic components. We handle full‑cycle work including DFM analysis, structural design, precision machining, iterative trial molding, parameter optimization and complete document delivery. Whether you need prototype validation or high‑volume mass‑production tooling, our engineering team can provide professional DFM evaluation and accurate quotation upon receipt of your 3D files and technical specifications.