Silk Screen Packaging Lid

Case Study: Precision Screen Printing on ABS Receiver Housing – How Benma Delivered a Zero-Defect Surface Finishing Project

A U.S. client requested a compact ABS receiver housing requiring high-precision graphic printing on the top surface.
The project included:

• Functional ABS enclosure with multiple assembly layers
• Accurate, durable screen printing of the READY RECEIVER logo
• Tight tolerances for printed graphics (±0.010 in as shown in the Secondary Operations Drawing )
• Clean, sharp alignment relative to screw holes and enclosure edges
• UV-stable color inks
• Production consistency across thousands of units

The receiver's 3D views and printing guide in the customer drawing (page 1) showed exact graphic coordinates, component orientation, and BOM-all of which Benma strictly followed.
This case demonstrates how Benma combines injection molding + surface finishing + quality control to produce professional-grade enclosure components for global customers.

ABS Material Specification

• Impact-resistant ABS
• Color: Bone
• Surface finish: Matte texture suitable for screen printing
• Dimensional stability after molding & printing

Screen Printing Requirements

• Multi-color graphic (blue + gray)
• Tolerance: ±0.25 mm (±0.010 in referenced in printed graphics tolerance of customer drawing)
• Strong adhesion, rubbing resistance, UV resistance
• Sharp edges even on small fonts
• Exact centering between mounting screws

Assembly Requirements

• Accurate alignment of the front housing (J-11067AB03) and printed top cover (G-11067AC03)
• 4× low-profile brass screws
• No ink contamination or smudging during assembly

Benma provided a one-stop manufacturing workflow covering:

Step 1: DFM & Mold Optimization

Before mold cutting, Benma's engineering team analyzed the customer's drawing:

Verified printing zones, flatness requirement, and sink-mark-sensitive areas

Ensured the plastic flow direction would prevent warpage that may shift print alignment

Added controlled draft angles to ensure stable demolding

Maintained a uniform surface texture for consistent ink adhesion

All insights were compiled into a DFM report and approved by the client.

Step 2: ABS Injection Molding

Our ISO9001-certified molding workshop produced the housings with:

Precision mold temperature control for minimal shrinkage

Fully automated injection press

3-point QC during molding:

First Article Check

In-process Dimension Check

Pre-printing Surface Inspection

Each part must meet dimensional requirements before proceeding to printing.

Step 3: Silk Screen Printing (Screen Printing) Execution

Using a high-precision screen printing fixture designed for the receiver's contour, Benma performed:

Printing Steps

Surface cleaning (Ionized air + alcohol wipe)

Corona treatment to increase ink adhesion

Screen alignment using fixed locating pins

Two-color printing with high-durability ink

IR + hot-air curing for long-term color stability

Post-curing inspection

Results

Smooth, sharp edges around the letters "iMist²" and "READY RECEIVER"

Perfect alignment according to the printed graphics zone on the drawing

Zero ink bleeding

High contrast color even on textured ABS

Step 4: Mechanical Assembly

Following the BOM:

Installed front housing

Applied printed cover

Secured 4× low-profile screws

Benma used torque-controlled screwdrivers to avoid:

Housing deformation

Screw hole cracking

Ink scratching

Step 5: Quality Control & Reliability Testing

Benma's QC conducted:

Screen Printing QC

3X magnifier print edge inspection

Adhesion test (cross-hatch test per ASTM D3359)

Abrasion test (50–100 rub cycles)

UV fade test simulation

Alcohol resistance test

Dimensional QC

Caliper check of housing width, length, hole pitch

Flatness check of printed surface

Assembly QC

Torque validation

Fit acceptance of mating components

Surface cleanliness check

Result: 100% pass rate before packaging.

The customer received:

The client described the final products as "retail-grade quality with flawless printing."

BMA

Benma Electric is a leading custom plastic and metal manufacturer, providing services such as:

• Injection mold design & fabrication
• High-precision plastic injection molding
• CNC machining
• UV printing, spray painting, and electroplating
• Complete assembly and packaging solutions

With ISO9001 and SMETA certifications, we supply clients in North America, Europe, Asia, and Australia with stable quality, competitive costs, and reliable delivery.

Mold

Workshop

Processing Workshop

Material

Warehouse

Hardware

Workshop

Assembly

Workshop

Laboratory

 

Dividing the workshop into specialized sections allows for better coordination and improved operational performance.

Advanced equipment in our factory ensures high-precision processing and streamlined operations.