Common problems in injection molding insufficient filling

The main reasons for insufficient filling are as follows:

1) insufficient resin capacity.

2) insufficient pressure in the cavity.

3) resin fluidity is insufficient.

4) poor exhaust effect.

As an improvement measure, we can start from the following aspects:

1) lengthen the injection time to prevent the resin countercurrent before the gate solidification due to the short molding cycle, which makes it difficult to fill the mold cavity.

2) improve the injection speed.

3) increase the mold temperature.

4) increase the resin temperature.

5) increase injection pressure.

6) enlarge gate size. Generally, the height of the gate should be equal to 1 / 2 to 1 / 3 of the wall thickness of the product.

7) the gate is set at the place with the largest wall thickness of the work in progress.

8) set the exhaust slot (average depth 0.03mm, width 3-smm) or exhaust rod. It is more important for smaller workpieces.

9) there is a certain buffer distance (about SMM) between the screw and the injection nozzle.

10) select low viscosity materials.

11) add lubricant.

 

 

About JasonMould Industrial Company Limited

Jasonmould is a China mold maker of plastic molds- injection mold, die casting moulds, plastic blow molding, rotational molding, medical plastic injection molding, two shot plastic injection molding, insert molding, overmolding, metal injection molding, micro injection molding, powder injection molding, ceramic injection molding, liquid injection molding, husky injection molding, household mold, casting mold, die mold tool, custom molds, china moulds, rapid prototyping tooling, plastic prototyping tooling, punch press tooling, die and tooling for mobile/ cell phone parts, automotive parts, vacuum cleaners, rechargeable tools, telephones, copiers, computers, multimedia speakers, and many other electronic products and household appliances. And also a plastic product manufacturer, mold manufacturer China– plastic parts, plastic water tank, plastic balls, plastic containers, plastic buckle, plastic anchor, plastic hanger, plastic spoon, plastic pipe fitting, plastic tumble, plastic tableware, plastic cups, plastic bottles, plastic tray, plastic cosmetic container, plastic case, plastic food container, plastic chairs, plastic caps, plastic cap closure, plastic tubes, plastic water pipes, plastic knobs, plastic tubing, plastic utility boxes, plastic racks and so on.

Contact:
Person: James Yuan
Company: JasonMould Industrial Company Limited
Add:  LongGang Village,LongXi Town,BoLuo County,HuiZhou City,GuangDong Province, China
Tel: 86-752-6682869
Email: james@jasonmolding.com

Site: https://www.jasonmolding.com/custom-injection-molding/

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