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The process of injection mold price estimation:

1. First, we should choose the steel and manufacture process base on customer requirement.
2. Afer choose the material, we should make a simple draft, then we will get the mold size and weight.
3. Manufacture cost, the manufacturing cost is 1.5-3 times of material cost base on complexity.
4. Every mold should consider risk cost, it normally is 10% of mold price
5. Tax, it depends on local policy.
6. Design fee, normally it is 10% of total mold cost
7. Trial fee, it is 3-5% of total mold price

The way of injection mold price calculation

1. Mold price=steel cost+design fee+manufacture cost+profit+tax+trial cost+package and transport fee
2. The proportion

• Material cost: steel and standard spare part take 15%-30% mold price
• Manufacture and profit: normally 30-50% of mold cost
• Design fee:10-15% of mold cost
• Trial fee: within 3% for big size mold,5% for small mold
• Package and transport: real cost or 3% mold price
• VAT: 5%-17% of mold price

Still didn’t know how to calculate the plastic injection mold part price? Don’t worry, ecomolding have the pricing tags for each mold parts, you can check out here and see the general price.

As we know,we as plastic injection mold manufacturer should make sure the mold meet customer’s requirement and the quality meet highest level,so the checking procedure should be followed as below.make sure all document needed are all packed in shipping box before mold shippment

1, 2D mold assembly drawing with hard copy

2, 2D part drawing with hard copy

3, all the 2D drawing and 3D part drawing with PC copy(Buring in CD disk)

4, Hot runner drawig if have

5, short shot photos and 2 cycle auto injection vedio burn in the CD

6, all the electrodes for mold in case modification in customer side

7, 1 shorts sample for the last trial

8, 1 copy of injection molding parameter

9, steel certificate for core and cavity

10, the dimension measurement report for last samples

11, The hardness treatment certificate for cor and cavity steel

12, one copy nitriding certificate

13, measurement report for mold steels.

Most designers focus on one color plastic injection mold, so they don’t to how to design when we met two color plastic injection mold.so we will talk about the theory and important point about two color injection mold.two color mold have another name “two-shot mold”, they inject two resin on the same machine but injection two times,  typically consist of 2 sets of mold, the core side will rotate 180 degrees, but cavity side will be fixed.but the molding part is only ejected out one time.we always call it two-color injection molding and need special two-color injection machine.

The characteristics of two color mold:

1. Two shape of the cavity is different, forming 1 kinds of products each. But core side has the same shape. (Note: if there are not the same, use sliders)
2. After the cavity rotates 180 degrees, the cavity must fit another core, Designer should pay attention to this point.
3. Please carefully check the data of color injection molding machine such as maximum mold thickness, the minimum allowable mold thickness, K.O. holes distance etc..
4. The gate should be cut automatically in 3 plates two color mold, especially soft resin.
5. When we design the second injection cavity, we should leave some space to avoid scratch, but must think about the seal area, the molding part have the possibility of deformation and cause flash
6. We can make the first molding part a little bit bigger than spec.it will be pressed tighter when the second injection, reduce the risk of flash.
7. Pay attention to in second injection molding if they will make the first molding part deformed by resin flow, If that is possible, we must think of a way to improve them.
8. We should make the cooling system plenty, balance and same in two mold
9. 99% we injection hard material first, before soft is easy to deform
10. In order to make the two plastic stick more tightly, we should consider “sticky” of two resin and the roughness of mold surface