Characteristics of Cosmetic Mold Parts

1. High precision and surface quality
Dimensional tolerance ± 0.005mm, surface roughness Ra ≤ 0.2 μ m, mirror polishing grade up to # 8000. Cosmetic mold accessories shall meet the surface requirements of no defect and no flow mark, and the injection of lipstick tube, powder box and other components shall be realized through high-precision molds.

2. Corrosion resistance and long lifespan
The corrosion resistance of steel meets the ISO 9001 standard, with a coating thickness of 3-5 μ m. Chemical components (such as essence and preservatives) that may be contained in cosmetics raw materials may cause corrosion to mold materials. The corrosion resistance of mold components is significantly improved through nitriding treatment or titanium plating process. Medical grade mold accessory manufacturers use SKD61 steel, which has been nitrided to increase its hardness to 50-55HRC, making it suitable for injection molding of high-precision medical syringe casings.

3. Rapid cooling and efficient production
The diameter of the cooling water channel is between 6 and 12mm, and the spacing between the water channels is ≤ 25mm. The cosmetic mold needs to shorten the molding cycle by optimizing the cooling system. The mold of liquid foundation bottle cap adopts the spiral cooling channel design, which improves the cooling efficiency by 30%, and reduces the single piece forming time from 15 seconds to 10 seconds, which is suitable for mass production.

4. Modular design and rapid mold change
The standard interface is compatible with international standards such as HASCO and DME. Modular design can reduce mold maintenance costs. Cosmetic mold accessory manufacturers offer detachable ejector pin components, reducing replacement time from 2 hours to 15 minutes, suitable for production needs of multiple varieties and small batches.

Application scenarios of Cosmetic Mold Parts

1. Cosmetics packaging industry
Lipstick tube, powder box, eye black bottle, etc.

2. Personal care products industry
Electric toothbrush shell, shaver blade holder.

3. Medical and pharmaceutical industries
Syringe casing, vial cap, dropper.

4. Food packaging industry
Sauce bottle cap, seasoning bottle.

5. Consumer electronics industry
Phone case, headphone case, smartwatch strap.

Cleaning and Maintenance Guide for Cosmetic Mold Parts

1. Daily cleaning
Use a scraper to gently scrape off residual rubber material (with a force of ≤ 5N to avoid scratching the mold cavity);
Dip a cotton swab in 95% ethanol to wipe the surface, with a coverage rate of 100%;
After the alcohol evaporates, apply a thin layer of medical grade Vaseline (thickness ≤ 0.05mm).

2. Regular maintenance
Cycle: Deep maintenance is carried out every 50000 pieces produced.
Operation:
Disassemble mold accessories and clean with an ultrasonic cleaning machine (frequency 40kHz, temperature 50 ℃);
Check the wear of moving parts such as the ejector pin and slider, and replace them if necessary;
After reassembly, conduct a no-load test to confirm that there are no abnormalities.
3. Storage requirements
Environment: Temperature 20-25 ℃, humidity ≤ 60%, no corrosive gases;
Protection: Apply anti rust oil to the surface of the mold, wrap it with dust-proof cloth, and store it on a dedicated mold rack.

FAQs for Cosmetic Mold Parts

Q1: How to choose the material of mold accessories?
A: Select according to product requirements. For example, transparent parts need to be made of high polishing steel (such as NAK80), and corrosion-resistant parts are recommended to be treated with S136 and titanium plating.

Q2: How to evaluate the lifespan of molds?
A: The lifespan depends on the material, heat treatment, and frequency of use. For example, after nitriding treatment, the service life of S136 steel can reach more than 500000 times; If left untreated, the lifespan may be shortened to 100000 cycles.

Q3: Can mold accessories be customized?
A: Support customization. 3D drawings (in formats such as STEP/IGES) must be provided, specifying material, tolerance, and surface treatment requirements.

Q4: How to repair scratches on the surface of the mold?
A: Minor scratches can be treated by polishing (gradually increasing the grit of sandpaper from 800 to 2000), while deep scratches need to be reworked after welding at the factory.