Injection Molding of a Plastic Bag Slider for the Food Industry

Plastic Bag Slider
Plastic Bag Slider

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A customer approached CNR Group, LLC to mold over 300,000,000 parts for a consumer application. The part was a .620" long, .320" wide, and .390" high slider that was to be used on various plastic storage bags. We high-speed injection molded the parts using a Nissi NEX4000, 200 ton fully electric molding machine. The parts also received high cavity count tooling with hot tips.

The .4 g polypropylene sliders are periodically dimensionally inspected per the control plan and then shipped to the client's Wisconsin location. During the entire process, we are able to hold tolerances of ±.003".

For more information about this molding project, see the details below. To learn more about our other services, please contact CNR Group today.

High Volume Part Specifications

Product Name
Product Description
This slider is used on various sized plastic storage bags.
Capabilities Applied/Processes
  • High Volume, High Speed Injection Molding. Fully Automatic.
  • High cavity count (96) tooling with hot tips.
Equipment Used to Manufacture Part
Part was molded on a Nissei NEX4000, 200 ton fully electric injection molding machine. DME temperature controller is used to control Hot tips.
Overall Part Dimensions
Width.: .320"
Height: .390"
Tightest Tolerances
Material Used
Continuously Mixed and Fed with a McQuire Mixer
In Process Testing/Inspection Performed
Dimensional Inspection Per Established Control Plan
Estimated Part Weight
0.4 Grams
Industry for Use
300,000,000+ Annually
Delivery Location
Standards Met
Customer supplied print, 2D CAD Drawing

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