Let's go on to discuss the maintenance of injection molds 6. If the cavity surface has special requirements, and the surface roughness Ra is less than or equal to 0.2cm, absolutely can not be wiped by hand or cotton, It should apply compressed air, or use advanced napkins and high-grade cotton wool to gently rub the alcohol Wipe. 7. The surface of the cavity should be cleaned regularly. The inject...

POLYPROPYLENE injection molding we simply say PP injection molding, compared with polypropylene, PP is easier, polypropylene is a thermoplastic polymer material, a wide range of applications.It is produced in a process called chain length polymerization, and it is formed from its monomer propylene.Italian scientists discovered it as early as the 1950s It has the following characteristics; It has h...

Here two tips to choose mold in China.  1. The characteristic of foreign capital mould manufacturer is management standard, flow is perfect, service consciousness is strong, quality and service have assure, but its indirect cost and sale cost are quite high, because this mould develops cost to will rise accordingly.If you have strong financial ability, and want to find a company that can prov...

Plastic raw materials have many different types.Today we will take about the engineering plastic materials.So what are the Four Major Engineering Materials and what's their applications ? The answer is as follow: 1.ABS, full name is Acrylonitrile Butadiene StyreneAcrylonitrile Butadiene Styrene. It's widely used in machinery, automotive, electronic appliances, instrumentation, textile and construc...

Sometimes when we make injection parts, we can find some parts have mixed color, why this happens? The reason may be as below: 1. plastic material is mixed with master color or toner. 2. plastic material was decomposed and carbonized. 3. it was polluted when adding material or changing material 4. the material itself is not pure, has mixed material other material Green Vitality has rich experience...

On the premise of ensuring product quality, the shorter the cycle time is, the higher the cycle time. The cycle time includes the following items: injection time, pressure holding time, melting time, cooling time, ejection time, mold clamping low pressure time, and even more The time factor is also related to mold opening and clamping, and the speed of ejection. 1. Injection time Including the hol...

Flame retardant and fireproof PP plastic, why does the sticking phenomenon occur during injection molding? After high-temperature dissolution, high-speed and high-pressure filling in the cavity during the injection, the addition of flame retardant and auxiliary in the flame-retardant fire-retardant PP,  if the mold has a large amount of material and the exhaust is insufficient, The gas will a...