How many colors can private label protective cases print?

Answer: Four is the practical ceiling, since each color adds a screen and a pass. Above four, water transfer holds detail better at a higher cost.

Is Delta E 1.0 an industry standard?

Answer: No, it is a contractual line. Holding 1.0 needs stable masterbatch and barrel temperature; otherwise write 1.5 into the clause.

Do nameplates always need rivets?

Answer: Not indoors, where foam adhesive is enough. For cold service, specify rivets, since drilling after molding breaks the seal.

Can the carton mark be printed on one face?

Answer: Yes, if receiving is manual. Automated sorters read two or three faces, and a single-face carton is diverted.

Is plus or minus 2 mm tight for label placement?

Answer: Ordinary on a flat panel, tight on textured rotomolded surfaces. Above 0.3 mm of texture, relax to plus or minus 3 mm.

Private Label Protective Cases: Specs That Survive Inspection

Quick answer: Private label protective cases rarely fail on shape. They fail five pages later, on process tolerance, color control, carton marking, barcode legibility and label placement. Each page needs a number and a test method.

Where the Spec Book for Private Label Protective Cases Begins
Screen Print Hot Stamp and Nameplate Tolerances
Color Codes and the Delta E Line
Carton Marks Barcodes and Compliance Badges
Label Placement Tolerance and First Article Sign Off
FAQ

1. Where the Spec Book for Private Label Protective Cases Begins

A spec book for private label protective cases runs eight to twelve pages. The last five carry process, color, packing, marking and labels, which decide whether the brand lands on the case.

One test separates a clause from a wish: a third party must be able to check it. Registration within plus or minus 0.3 mm is a clause, clean printing is not.

Clause group	What to state	How to verify
Process	position, registration tolerance	caliper, 10x loupe
Color	system, batch spread, gloss	spectrophotometer
Packing	box grade, stack layers, mark height	tape, stack test
Barcode	symbology, magnification, quiet zone	verifier
Label	datum edge, tolerance, bubble limit	limit samples

2. Screen Print Hot Stamp and Nameplate Tolerances

Screen printing is the cheapest way to place a brand and the easiest to spoil: one screen per color, registration at plus or minus 0.3 mm, minimum line 0.25 mm, no type under 3 mm. Rotomolded shells shrink unevenly, stretching artwork across a corner by one to two percent.

Private Label Protective Cases: small yellow green case closed on a green backdrop, moulded ribs at the lid corners, folding handle centred on the front, black latch mounts either side

Hot stamping runs at 110 to 130 degrees Celsius and 0.3 to 0.5 MPa, foil sunk no deeper than 0.15 mm; too deep leaves a pale stress ring where the shell cracks. Nameplates are 0.8 mm aluminium on acrylic foam, with four 3.2 mm rivet holes for cold-climate orders, where adhesive loses thirty percent of peel strength at minus 20 degrees Celsius.

3. Color Codes and the Delta E Line

For private label protective cases, specify color as a system: Pantone 19-0417 TCX, plus gloss at 5 to 10 units, texture and the permitted spread.

Judge on Delta E: 1.0 within a batch, 1.5 between batches, 2.0 for metallic finishes where flake orientation makes readings jump. Fix the conditions, D65, 10 degree observer, 8 mm aperture, three readings.

Item	Within batch	Between batches	Condition
Solid matte	Delta E 1.0 max	Delta E 1.5 max	D65, 10 degree
Metallic	Delta E 1.5 max	Delta E 2.0 max	three-point average

Each side keeps a signed 60 mm chip, dark and flat; a chip left on a windowsill ends every color clause.

4. Carton Marks Barcodes and Compliance Badges

Packing clauses for private label protective cases decide whether the shipment is identifiable at the dock: BC double wall, six layers for 24 hours, no set deeper than 5 mm.

Carton marks state faces, character height and color: two faces, 20 mm characters, the block 50 mm below the lid line. Buyer templates stay vector, never auto-fitted.

EAN-13 runs at 0.8 to 1.2 magnification with 3.63 mm quiet zones and 22 mm bar height, and first-read rate on corrugated is measured at 95 percent or better. Compliance marks follow the destination, CE at 5 mm minimum height.

5. Label Placement Tolerance and First Article Sign Off

Write label tolerance against a datum: from the lower left corner of the front face, 60 mm plus or minus 2 mm across and 25 mm up, skew under one degree.

Below 10 degrees Celsius or above 70 percent humidity, 24-hour peel falls to half of 6 N/25mm; winter orders warm cases for four hours or use low-temperature adhesive.

Item	Deliverable	Pass line
Process	print and foil sheet	0.3 mm registration
Color	three signed chips	Delta E 1.0 max
Packing	24 hour stack record	set 5 mm max
Barcode	first-read report	95 percent
Label	three limit samples	three bubbles max

Limit samples, good, borderline and reject, carry the rest: three bubbles maximum, none over 1 mm, no wrinkle across a character.

Conclusion

Private label protective cases are decided on the pages that describe how a brand is applied, not the drawing of the shape. Process tolerance decides whether a mark reads, color codes whether two batches look like one order, carton marks and barcodes whether the shipment is identified at the dock. Put a number behind each group, and private label protective cases stop being a matter of opinion.

This article discusses only the container (case body) side of specifications and design intent, and does not cover any handling, loading or use of the contents.