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Back to Labels...

About Label Adhesives

Selecting the proper adhesive is essential to the success of the label in each application. A wide variety of acrylic adhesives are available, each in different thicknesses, to achieve a wide range of tack, shear and peel properties. Different adhesive thicknesses can be used to better match unique requirements, such as open, porous surfaces (thicker adhesive works better), or a 'low profile' surface (thinner adhesives needed). Labels exposed to higher temperatures than acrylic adhesives can tolerate will need silicone adhesives which are also used whenever a label must adhere to a low energy, rough or porous product surface. Specific applications which require flame retardant adhesives, tamper-evident constructions, or removable and repositionable adhesives are also available

Things to know for your pressure sensitive labels to be effective.

  •     The surface that you want to label should be clean, dry and free of any surface contamination, such as dust, oil, or rust.
  •     When you apply the label, you must use firm pressure to increase the physical contact of the adhesive with the surface of the product.
  •     Once applied to a surface of the product, label adhesion to that surface increases over time. The force required to remove a typical label is dramatically                 increased even after 24 hours.
  •     Pressure sensitive adhesives will provide stronger adhesive bonds on a warm surface, as compared to a cold one. The adhesive will 'flow' more readily,              increasing the surface area, and increasing the adhesion peel strength.
  •     Pressure sensitive labels must be stored in moderately controlled environments (i.e. such as an office, or warehouse) to prolong their shelf life.

Usage Types.

    Removable- a pressure sensitive adhesive characterized by low ultimate adhesion to a wide variety of surfaces that can be removed without damage to either the     label or the substrate.
    Repositionable- a pressure sensitive adhesive characterized by low ultimate adhesion to a wide variety of surfaces, that can be removed without damage to either     the label or the substrate and can be reapplied in a different location.
    Permanent- A pressure sensitive adhesive characterized by having relatively high ultimate adhesion. Attempts to remove the label will result in destruction of the         label, or the surface to which it is attached.
    Freezer - designed to be applied and/or used in wet, frozen environments.  Can be used on food, in medical labs, etc.
    Static Cling - is not really an adhesive.  It sticks to glass via static electricity.   These labels are expensive and hard to handle.  They are quickly being replaced by      repositionable adhesive labels.

Material Types.

    Acrylic adhesive- high temperature resistance, high solvent resistance
    Silicone adhesive- higher temperature & solvent resistance than acrylic, but more expensive

Basic adhesion properties.

    Tack- Property of a pressure-sensitive label which causes it to adhere to a surface instantly with a minimum amount of pressure and contact time ("quick stick"). The tack is measured by measuring the force required to remove a micro-probe from the adhesive surface.

    Peel- the amount of force required to remove adhesive a predetermined speed. A peel test measures the force required to remove a label at a 180 degree angle from a standard surface (usually stainless steel).

   Shear- Shear testing measures the time required under specified test conditions, to slide a standard area of pressure-sensitive label on a surface when a force is applied parallel to that surface, i.e. the force between the product surface and the label surface. What is the effect of a "sideways" force on the label bond?

Surface Energy.

Surface energy is a measurement of the molecular forces on the surface of a product; "high energy" surfaces can be "wet out" by a high energy liquid, such as water. Low energy surfaces, cannot be wet out by water, i.e. the 'beading' of water on your freshly polished car. However, they CAN be wet out by 'low energy' liquids, such as oils...or LOW SURFACE ENERGY adhesives, This "wetting out" effect is critical to adhesion, since effective wetting increase the surface area of the adhesive in contact with the product. Adhesion strength is directly proportional to surface area. Likewise, adhesives can be adapted to maximize adhesion to either high energy surfaces, or low energy surfaces. Typically, a so-called "high energy" adhesive will not adhere as well to a 'waxy' or low energy surface, as will a 'low energy' adhesive. Different acrylic adhesives are available to maximize adhesion to either high energy, or low energy surfaces, respectively.

    High Surface energy- clean, dry glass, metals, painted surfaces, certain plastics

    Low Surface Energy- waxy, oily, Teflon, silicone & mold release
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  • Home
    • Work at Greenway
    • Pay A Greenway Invoice
    • Better Than Vistaprint
    • Privacy Policy
    • Terms of Sale
  • Print
    • Akuafoil
    • Bar Codes >
      • QR Codes
    • Booklets & Catalogs
    • Business Cards
    • Business Cards That Stand Out
    • Extreme Business Cards >
      • Extreme Cards "32"
      • Extreme Cards "16"
    • Brochures & Flyers
    • Chain of Custody Forms
    • Calendars (Wall)
    • Checks >
      • Check Security Features
      • CDS and CSS Checks
    • Collection Agency Forms
    • Direct Mail /EDDM
    • Door Hangers
    • Envelopes
    • Forms >
      • Pressure Seal Forms
    • Freight Labels
    • Holiday & Greeting Cards
    • Insurance Guide Books
    • Labels >
      • Label Catalog
      • Integrated Labels and Cards
      • Freight Pro Labels
    • Large Format
    • Note Pads
    • Patient Sign-in Sheets
    • Plastic Cards >
      • Gift Cards
    • Postcards
    • Presentation Folders
    • Pressure Seal Forms
    • Print Management
    • Sign-in Sheets
    • Spot UV - Beauty and Security
    • Tags
    • Tax Forms
    • Ultra Privacy Sign-in Label Sheets, Custom Columns - Designed For Your Business
  • Promo Products
    • Promo Products Search Engine
    • Retail Display and Signage
    • Badge Holders - Retractable
    • Buttons in Boxes
    • Calendars >
      • Types of Calendars
      • "Make Your Case" Calendars
      • Mousepad Calendars
    • Drinkware
    • Golf Ball Sleeves
    • Magnets
    • Paper WebKeys
    • Tote Bags
    • Zipper Pull Buttons
  • Apparel
    • Apparel Catalog
    • About Fabrics
    • Sizing, Stitch Count
    • Applique Samples >
      • Applique vs Embroidery
  • SPECIALS
    • Weekly Deals
    • Swiss Army Knives
    • PRINTED MASKS
    • Camper Mugs
    • Masks. Low Cost. Made of Paper Napkins
    • PROTECTIVE FACE MASKS
    • Hand Sanitizer Liquid Refill
    • UV Phone Sanitizers
  • About / Contact
    • About Us
    • Contact Us
  • Customer Specific
    • Delex
    • Landmark
  • Artwork/Color
    • Standard Check Ink Colors
    • Pantone (PMS) Color Chart
    • Artwork Requirements
    • Four Color Printing Tips
    • Raster Images vs Vector Images
    • Folding Options
  • Blog
  • EVENT PRINTING ARIZONA
  • Weekly Special Graphics