How to Choose 4x6 Thermal Shipping Labels

De 4 × 6" size has become a standardized shipping label size as it accommodates addresses, routing codes, tracking barcodes and carrier instructions while not taking up too much space on packages.

But just dimensions don't equate to fulfillment. 4x6 Thermal Shipping Labels also must correspond with the printer, release easily from the liner and adhere to the shipping container and maintain the contrast of the barcode during shipping.

The right label should not only look good right out of the press, it should also be evaluated throughout the shipping process.

Understand 4x6 Format

Een 4 × 6-inch label measures approximately 101.6 × 152.4 Mm. The popular metric 100 × 150 mm is nearly equivalent, but not exactly the same.

This small difference could impact upon:

Printer calibration
Template alignment
Label-gap detection
Barcode position
Print margins
Carrier-generated PDF scaling

Jinbao's Gids voor verzendlabelgrootte will tell you why 4×6 inch and 100×150mm are the most popular sizes for courier, E-commerce & warehouse shipping labels.

The software page size should be the same as the physical label prior to printing. Barcodes can be resized and/or repositioned by automatic “fit to page” settings.

Label Format	Dimensies	Main Advantage	Key Check
4 × 6 duim	101.6 × 152.4 Mm	Common courier and e-commerce format	Printer template must use inch dimensions
100 × 150 Mm	100 × 150 Mm	Common international metric format	Avoid automatic scaling from 4 × 6
Roll labels	Continuous roll format	Compact and suitable for desktop printers	Confirm core and outer diameter
Fanfold labels	Stacked folded format	Fewer media changes at busy stations	Protect stack from dust and moisture
Large-core roll	Usually for industrial printers	Supports high-volume continuous printing	Confirm printer media capacity

Match the Label to the Printer

The majority of 4x6 shipping labels are meant to be used with direct thermal printers. Geen inkt, toner or ribbon needed as the printhead activates the heat sensitive coating.

Bevestig:

Compatibility for direct thermal printers.
Maximum printable width
Roll fed or fanfold feeding.
Gap, black-mark or continuous sensing (CTA).
Kerndiameter
Maximum roll diameter
Print resolution
Driver page settings

Smaller rolls and outer diameters are typically used with desktop printers, whereas larger ones might be used in industrial printers. Even if the face material is compatible, it may not work if the roll does not fit in the printer compartment.

Jin Bao Broers custom thermal label rolls kom binnen 4 × 6″ and 100 × 150 mm sizes and have various roll and core options.

Protect Barcode Scannability

Shipping labels that can be scanned in a flash with automated sorters and handheld scanners are successful.

The factors affecting the performance of bar code are:

Dark print density
Sharp bar edges
Correct dimensions
Sufficient quiet zones
Flat label application
Clean background
Printer resolution
Surface reflectivity

Never center the label on a seam, corner, tape edge or damaged area of a carton. When the original print file is correct, wrinkles and curves can be a problem, causing the barcode to be distorted.

Test scans should be done after the label has been applied to the package and not just while it is on the liner.

Kies Deklaag for Shipping Environment.

Standard direct thermal labels can be sufficient for clean/dry/shorter duration shipping. More challenging courses can lead to labels being exposed to rain, condensatie, Stof, oil and conveyor friction.

Top coated media is type of media that has a protective coating on top that can enhance moisture and abrasion resistance. De Jinbao top coated thermal label paper rolls come in 4″ x 6″ and 100 mm x 150 mm sizes and can be used for shipping and postage.

Consider coating needs with regard to:

Delivery duration
Outdoor exposure
Cold-chain condensation
Conveyor contact
Warehouse dust
Package handling
Vereiste beeldlevensduur

Any coating that is more protective will only be of value if it does not interfere with the printer's heat control.

Make sure that the Match Adhesive matches the Package.

Not only clean corrugated cartons have shipping labels applied to them. These are typically recycled cardboard, Poly mailers, stretch film and plastic totes.

Surface texture, Temperatuur, contamination and package flexibility are all important factors in adhesive performance.

Possible options include:

Permanent Carton & parcel Adhesive
A sticky substance for rough board.High tack adhesive for rough board.
Adhesive that can be used for cold-chain packaging at no cost.
Adhesive material for removable containers which can be used more than once.
Adhesive that can be used on plastic compatible poly mailers.

Label real packaging material with test labels. Ensure that initial tack, edge lifting and final bond are satisfactory following storage and handling.

Jinbao's adhesive thermal waybill labels can be used in 4" × 6" format with permanent or custom adhesive.

Inspecteren Release liner and Die Cutting

The release liner is a factor which influences the smoothness of the feeding and dispensing of the labels. Unstable release force can result in premature peeling, labels that stick to the liner or a disruption of automated application.

Inspecteren:

Consistent label gaps
Clean die-cut edges
Liner is not cut anywhere
Stable release force
No adhesive bleed
Accurate label dimensions
Even roll winding

Die cutting needs to be done so that it does not harm the liner and separates the face material. Liner breaks can be produced in high speed printing if cutting pressure is too great.

Check Roll Direction and Configuration

The roll structure is not only packaging information, it is an operation specification.

Bevestig:

Kerndiameter
Rol buitendiameter
Labels per rol
Winding inside/outside
Leading-edge direction
Label gap
Roll width
Maximum number of splices is 80.

Label should be printed in the correct print orientation for application immediately after printing. Packing stations can be slowed by having to rotate the labels or reload media due to incorrect winding.

A fanfold label is a good solution for a high-volume stationary workstation, where it can minimize roll changes, echter, the labels must be stored in a clean, protected area, or dust and folding damage can result.

Testing as Real Fulfillment Conditions.

A complete logistics route can not be reproduced in a short print test. Printers, handling and actual packages should be included in validation.

Check:

Continuous printing
Barcode-scannen
Label dispensing
Adhesion after 24 Openingstijden
Conveyor friction
Moisture exposure
Low-temperature storage
Carton stacking
Final delivery readability

Try more than one sample from the top of a carton. This aids in highlighting any batch, winding and die-cutting variation.

Probleem	Possible Cause	Check
Barcode will not scan	Low contrast or incorrect scaling	Print density, size and quiet zones
Label lifts from carton	Unsuitable adhesive or dusty surface	Package surface and final bond
Printer skips labels	Incorrect sensor or inconsistent gap	Sensor setting and die-cut spacing
Labels jam during printing	Wrong roll diameter or damaged liner	Roll configuration and liner condition
Image fades in transit	Warmte, moisture or abrasion exposure	Coating grade and shipping environment
Label peels inside printer	Release force too low	Liner and adhesive converting quality
Text prints off-center	Wrong page size or calibration	Driver dimensions and media calibration

Keep Thermaal Labels in a proper manner.

Unused labels and printed pictures may be impacted by heat, zonlicht, Vocht, Oliën, solvents or plasticizers.

Store label rolls:

In sealed original package(s)
In a cool, Droog gebied
Out of the sun's rays
Out of the chemicals and PVC!
Off warehouse floors
Using first in first out rotation

Do not store rolls near loading doors, heaters or the interior of vehicles. Poor storage will alter the adhesive characteristics and thermal image quality prior to getting to the printer.

Final Selectie Check

Reliable 4x6 Thermal Shipping Labels need to have accurate dimensions, be compatible with the printer, have clean die cutting, stable release, an appropriate adhesive and long-lasting bar code output.

Approval to be based on ongoing printing and applied package testing under true fulfillment conditions. Jin Bao Brother provides 4 × 6" en 100 × 150 mm thermal labels with customized coatings, Lijmen, cores and roll configurations for e-commerce and logistic applications.

FAQ

Q1. Are 4 × 6 inches and 100 × 150 mm the same size?

They are a near, but not equivalent, duplicaat. The printer drivers and label templates should be the same size as the physical media.

Q2. Are thermal shipping labels 4x6" inktloos?

Direct thermal labels do not use any ink, toners or ribbons. The image is created by heating the sensitive coating on the label by the printer.

V3. What kind of glue can be used for shipping cartons?

Meestal, clean corrugated cartons are glued together with a permanent adhesive. A more special adhesive may be needed for rough, Gerecycled, frozen or plastic surfaces.

Q4. Why can't a printed shipping barcode be scanned?

It could be due to low contrast, improper scaling, rimpels, inadequate quiet zones and/or bad printhead condition. Perform a test after the label is put on the package.

V5. Are 4x6 label rolls available to be customized by Can Jin Bao Brother?

Ja. Core size, Roldiameter, lijm, coating and winding direction and packaging will be custom designed according to the requirements of the printer and application.