The Label Printing Glossary: 100 Terms Every Buyer Should Know

Buying labels should not require a degree in printing. But if you have ever ordered labels, compared printer options, reviewed a quote, or tried to figure out why a label would not stick, scan, print, or survive the application, you already know the terminology can get confusing fast.

This glossary breaks down 100 common label printing terms in plain English, so you can make better decisions when buying labels, printers, ink, ribbons, software, and supplies.

Whether you are ordering product labels, warehouse labels, barcode labels, thermal labels, color inkjet labels, or custom printed labels, these are the terms worth knowing.

Label Construction Terms

1. Face Stock

Face stock is the top layer of the label, which is the part that gets printed. It can be made from paper, polypropylene, polyester, vinyl, or other materials. The face stock affects print quality, durability, appearance, and how the label performs in the real world.

2. Adhesive

Adhesive is the sticky layer that bonds the label to the surface. Different adhesives are designed for different surfaces, temperatures, environments, and removal requirements.

3. Liner

The liner is the backing material that carries the label before it is applied. It protects the adhesive and allows labels to feed properly through printers, applicators, or dispensers.

4. Release Coat

The release coat is a coating on the liner that allows the label to peel away cleanly. Without the right release coat, labels may be difficult to remove from the liner or may not dispense properly.

5. Topcoat

A topcoat is a special coating applied to the face stock to improve print quality, ink holdout, durability, smudge resistance, or chemical resistance. Inkjet labels and thermal transfer labels often require specific topcoats.

6. Matrix

Matrix is the waste material around die-cut labels after the labels are cut. During production, the matrix is usually removed so only the finished labels remain on the roll.

7. Die Cut Label

A die cut label is cut into a specific shape or size using a die. Common examples include rectangles, circles, ovals, custom shapes, and product-specific label formats.

8. Butt Cut Label

A butt cut label has straight edges and no gap between labels. These are often used when labels do not need rounded corners or spacing between each label.

9. Kiss Cut

A kiss cut cuts through the label material but not through the liner. This allows the label to peel away while the backing remains intact.

10. Perforation

A perforation is a line of small cuts that allows labels or sections of a label roll to tear apart more easily.

Label Material Terms

11. Paper Label

A paper label is a cost-effective option for general indoor applications. Paper works well for basic product labels, shipping labels, and short-term uses, but it may not hold up well against moisture, abrasion, chemicals, or outdoor exposure.

12. Synthetic Label

A synthetic label is made from durable film materials instead of paper. Synthetic labels are often used when labels need to resist moisture, tearing, abrasion, chemicals, or harsh handling.

13. Polypropylene Label

Polypropylene, often called BOPP, is a synthetic label material commonly used for product labels. It offers good moisture resistance, durability, and a professional appearance.

14. Polyester Label

Polyester is a durable synthetic label material used for applications that require strength, heat resistance, chemical resistance, or long-term performance.

15. Vinyl Label

Vinyl is a flexible, durable label material often used for outdoor labels, safety labels, decals, and applications where conformability matters.

16. Direct Thermal Label

A direct thermal label has a heat-sensitive coating that darkens when exposed to heat from a direct thermal printer. It does not require a ribbon, but it can be sensitive to heat, light, abrasion, and chemicals.

17. Thermal Transfer Label

A thermal transfer label is printed using a ribbon. Heat from the printhead transfers ink from the ribbon onto the label. This method is often used when labels need better durability than direct thermal labels.

18. Inkjet Label

An inkjet label is designed to accept ink from an inkjet printer. Inkjet-compatible materials are coated so the ink bonds correctly and produces clean, sharp, full-color output.

19. Gloss Label

A gloss label has a shiny finish. It is often used for product labels where color vibrancy and a polished appearance are important.

20. Matte Label

A matte label has a softer, non-shiny finish. It can give labels a more understated or premium look and may reduce glare.

Adhesive Terms

21. Permanent Adhesive

Permanent adhesive is designed to create a strong bond to the surface. It is a common choice when the label is not meant to be removed.

22. Removable Adhesive

Removable adhesive is designed so the label can be removed without leaving heavy residue or damaging the surface. Performance depends on the surface and environment.

23. Repositionable Adhesive

Repositionable adhesive allows the label to be adjusted shortly after application. This can be useful when placement accuracy matters.

24. Freezer Adhesive

Freezer adhesive is designed to bond in cold environments. It is commonly used for frozen food, cold storage, and refrigerated applications.

25. All-Temperature Adhesive

All-temperature adhesive is designed to perform across a wider temperature range. It is often used when labels may be applied or stored in changing conditions.

26. High-Tack Adhesive

High-tack adhesive has strong initial grab. It is useful for difficult surfaces, textured materials, or applications where the label needs to bond quickly.

27. Low-Tack Adhesive

Low-tack adhesive has a lighter bond. It is used when temporary labeling or easy removal is important.

28. Adhesive Failure

Adhesive failure happens when the label does not stick properly or comes off too soon. Causes may include the wrong adhesive, dirty surfaces, moisture, temperature, rough surfaces, or improper application.

29. Low Surface Energy

Low surface energy materials, such as some plastics, can be difficult for labels to stick to. These surfaces often require specialized adhesives.

30. Application Temperature

Application temperature is the temperature of the surface and environment when the label is applied. This is different from service temperature, and it matters because some adhesives will not bond properly if applied too cold.

Printing Method Terms

31. Digital Label Printing

Digital label printing produces labels directly from a digital file without traditional printing plates. It is often used for short runs, variable data, fast changes, and full-color labels.

32. Flexographic Printing

Flexographic printing, often called flexo, is a traditional printing method that uses plates and is commonly used for larger label runs. It can be cost-effective for high-volume, repeat jobs.

33. Inkjet Printing

Inkjet printing uses tiny droplets of ink to create images, text, barcodes, and graphics. Color inkjet label printers are commonly used for in-house, on-demand color label printing.

34. Thermal Transfer Printing

Thermal transfer printing uses heat to transfer ink from a ribbon onto the label. It is commonly used for durable barcode labels, product labels, asset labels, and industrial labels.

35. Direct Thermal Printing

Direct thermal printing uses heat to activate a coating on the label. It is common for shipping labels, receipts, temporary labels, and short-life barcode labels.

36. Laser Printing

Laser printing uses toner and heat to print on compatible label sheets or materials. It is common in office environments, but not always ideal for roll labels or industrial labeling.

37. Pre-Printed Labels

Pre-printed labels are produced in advance by a label manufacturer. They may include logos, color graphics, compliance symbols, or static information.

38. On-Demand Label Printing

On-demand label printing means labels are printed when needed instead of being held in large pre-printed inventories. It is useful for short runs, frequent design changes, and multiple SKUs.

39. One-Step Color Label Printing

One-step color label printing combines full-color graphics and variable information in a single print process. It can reduce the need for pre-printed label shells and secondary overprinting.

40. Two-Step Label Printing

Two-step label printing often means using pre-printed color labels and then adding variable data later with a thermal printer. It can work well, but it also creates more label inventory to manage.

Printer and Hardware Terms

41. Printhead

The printhead is the component that creates the printed image. In thermal printers, it applies heat to the ribbon or direct thermal material. In inkjet printers, it ejects ink droplets onto the label.

42. DPI

DPI stands for dots per inch. It measures print resolution. Higher DPI can produce sharper text, barcodes, and graphics, but the right DPI depends on the application.

43. Print Width

Print width is the maximum width a printer can print. This matters when choosing a printer for wider labels, product labels, GHS labels, or large-format label applications.

44. Print Speed

Print speed is how fast a printer can produce labels, often measured in inches per second. Faster speed can matter in production environments, but speed should be balanced with print quality.

45. Duty Cycle

Duty cycle refers to how much printing a printer is designed to handle. A low-volume desktop printer and a production-level printer are built for different workloads.

46. Cutter

A cutter is a printer accessory that cuts labels after printing. It can be useful for individual labels, batch printing, tags, or continuous materials.

47. Peeler

A peeler separates the label from the liner after printing, making it easier to apply labels by hand.

48. Rewinder

A rewinder rolls printed labels back onto a roll after printing. It is useful for batch printing, production workflows, and keeping printed labels organized.

49. Unwinder

An unwinder holds and feeds large rolls of label material into a printer or finishing system.

50. Label Applicator

A label applicator applies labels to products, boxes, containers, or other surfaces. Applicators can be manual, semi-automatic, or automatic.

Ink, Ribbon, and Consumable Terms

51. Ink Cartridge

An ink cartridge holds ink used by an inkjet label printer. Different printers require specific cartridge models and ink types.

52. Pigment Ink

Pigment ink uses solid pigment particles suspended in liquid. It is often chosen for durability, water resistance, UV resistance, and long-term readability.

53. Dye Ink

Dye ink uses colorants dissolved in liquid. It can produce vivid colors, but it may be less durable against moisture, sunlight, and UV exposure depending on the application.

54. Maintenance Box

A maintenance box collects waste ink during cleaning cycles and printer maintenance. It is a normal consumable in many inkjet label printers.

55. Ribbon

Ribbon is used in thermal transfer printing. Heat from the printhead transfers ink from the ribbon onto the label.

56. Wax Ribbon

Wax ribbon is a common and cost-effective ribbon type used for paper labels and general-purpose applications.

57. Wax-Resin Ribbon

Wax-resin ribbon offers better durability than wax ribbon. It is often used when labels need more resistance to smudging, handling, or light abrasion.

58. Resin Ribbon

Resin ribbon is the most durable common ribbon type. It is often used with synthetic labels for chemical resistance, heat resistance, and harsh environments.

59. Ribbon Wrinkle

Ribbon wrinkle happens when the ribbon does not feed smoothly, causing uneven print quality, streaks, or gaps.

60. Print Coverage

Print coverage refers to how much of the label is covered by ink or toner. High-coverage labels use more ink and may cost more per label to print.

Barcode and Scanning Terms

61. Barcode

A barcode is a machine-readable symbol that stores information. Barcodes are used for product identification, inventory, shipping, tracking, compliance, and warehouse operations.

62. 1D Barcode

A 1D barcode uses vertical lines and spaces to store data. Common examples include UPC, Code 39, and Code 128.

63. 2D Barcode

A 2D barcode stores information in a square or rectangular pattern. Common examples include QR codes and Data Matrix codes.

64. QR Code

A QR code is a 2D barcode that can store URLs, text, product information, or other data. It is widely used for consumer engagement and digital access.

65. Data Matrix

Data Matrix is a compact 2D barcode often used for small items, medical devices, electronics, and regulated products.

66. Code 128

Code 128 is a high-density 1D barcode used in shipping, logistics, inventory, and product tracking.

67. Code 39

Code 39 is a 1D barcode used in industrial, warehouse, and inventory applications. It is simple and widely supported.

68. UPC

UPC stands for Universal Product Code. It is commonly used in retail product identification.

69. Quiet Zone

The quiet zone is the blank space around a barcode. Without enough quiet zone, scanners may not read the barcode reliably.

70. Barcode Verification

Barcode verification measures barcode quality against a standard. It is more formal than simply scanning the barcode and is often used for compliance or quality control.

Software and Data Terms

71. Labeling Software

Labeling software is used to design, manage, and print labels. It can support text, graphics, barcodes, variable data, templates, databases, and printer control.

72. Template

A template is a saved label design that can be reused. Templates help standardize label formats and reduce design errors.

73. Variable Data

Variable data changes from label to label. Examples include lot numbers, serial numbers, expiration dates, product codes, batch numbers, and barcodes.

74. Serialization

Serialization means assigning a unique number or code to each label, item, carton, pallet, or product.

75. Database Printing

Database printing pulls label data from a database, spreadsheet, ERP system, WMS, or other data source instead of requiring manual entry.

76. ERP Integration

ERP integration connects label printing to an enterprise resource planning system. This can help labels use approved product, inventory, customer, or order data.

77. WMS Integration

WMS integration connects label printing to a warehouse management system. This is common for location labels, pallet labels, carton labels, shipping labels, and inventory workflows.

78. Print Automation

Print automation allows labels to be printed automatically based on data, events, scans, transactions, or system triggers.

79. User Permissions

User permissions control who can design, edit, approve, or print labels. This is important for regulated environments and multi-user systems.

80. Version Control

Version control helps manage different versions of label templates and prevents outdated designs from being used accidentally.

Label Application and Performance Terms

81. Service Temperature

Service temperature is the temperature range a label can withstand after it has been applied. This is different from the temperature at the time of application.

82. Dwell Time

Dwell time is the amount of time an adhesive needs to build its final bond after the label is applied.

83. Tack

Tack is the initial stickiness of the adhesive. High tack means the label grabs quickly.

84. Shear

Shear measures the adhesive’s ability to resist sliding or movement under stress.

85. Peel Strength

Peel strength measures how much force is required to remove a label from a surface.

86. Abrasion Resistance

Abrasion resistance describes how well a label resists rubbing, scuffing, or wear.

87. Chemical Resistance

Chemical resistance describes how well a label resists exposure to cleaning chemicals, solvents, oils, or other substances.

88. UV Resistance

UV resistance describes how well a label resists fading, discoloration, or breakdown from sunlight or ultraviolet exposure.

89. Moisture Resistance

Moisture resistance describes how well a label holds up against water, condensation, humidity, or wet handling.

90. Outdoor Durability

Outdoor durability refers to a label’s ability to survive sun, rain, temperature changes, wind, and other outdoor conditions.

Industry and Compliance Terms

91. GHS Label

A GHS label is used for chemical hazard communication. It may include pictograms, signal words, hazard statements, precautionary statements, product identifiers, and supplier information.

92. UDI Labeling

UDI stands for Unique Device Identification. UDI labeling is used in the medical device industry to identify and track devices.

93. Compliance Label

A compliance label includes required information for regulatory, safety, customer, or industry standards.

94. Lot Number

A lot number identifies a batch of products made or processed together. It helps with traceability and quality control.

95. Expiration Date

An expiration date shows when a product should no longer be used, sold, or consumed. It is common in food, medical, pharmaceutical, chemical, and regulated product labeling.

96. Tamper-Evident Label

A tamper-evident label shows visible evidence if someone tries to remove or open a package, container, or product.

97. Asset Label

An asset label is used to identify and track equipment, tools, devices, machines, or company property.

98. LPN Label

LPN stands for License Plate Number. LPN labels are used in warehouses to identify pallets, cartons, cases, or handling units.

99. Warehouse Location Label

A warehouse location label identifies a storage location, rack position, bin, aisle, bay, level, or pick face. These labels help warehouse teams scan, store, and retrieve inventory accurately.

100. Custom Label

A custom label is made to specific requirements, including size, material, adhesive, shape, artwork, barcode, finish, or application. Custom labels are often used when stock labels do not meet the needs of the job.

Final Thoughts

The right label is not just about size and price.

The material, adhesive, printer, ink, ribbon, software, barcode quality, environment, and application all affect whether a label performs the way it should.

That is why understanding label printing terminology matters. When you know the language, it becomes easier to compare options, avoid mistakes, and choose labels and printing systems that fit the job.

We help customers with the full labeling process, including blank labels, custom labels, color label printers, thermal printers, inks, ribbons, consumables, labeling software, warehouse labels, support, and more.

Need help choosing the right label, printer, material, or software for your application?

Contact us and talk with a labeling specialist.