Envelope Adhesive Solutions

​From wedding announcements and Christmas greetings to bills and direct mail, paper communication is still delivering to consumers around the globe. The joy of receiving these greetings is still enjoyed by consumers. To deliver in the new paradigm, envelope manufacturers are faced with increasing their productivity and efficiency.

Henkel works with manufacturers to understand the current trends and develop adhesives to perform in any situation that our customers may encounter. Since 1923, Henkel has made adhesives for envelopes. We employ a large group of technical resources to evaluate new raw materials and new manufacturing processes to drive out costs and bring innovation to the envelope market.

Our products support:

  • Extrusion seam bonding - an array of adhesives specially formulated to work in a variety of manufacturing conditions with low-splash application, short setting times and consistent lay-flat.
  • Front seal bonding - a complete system for all types of closings: synthetic resin and dextrin-based adhesives for wet gumming, latex adhesives for pressure-sensitive gumming, and pressure-sensitive adhesive dispersions for seal and peel applications.
  • Window patch bonding - the necessary "tack" to assure all films made from glassine paper, polystyrene or polypropylene adhere immediately.

Envelope Applications

With decades of experience as an adhesives manufacturer, Henkel’s portfolio of envelope adhesive solutions offer high performance adhesion to a variety of materials. This makes our products the ideal solution for a range of different applications, such as extrusion seams and front seals. Additionally, our envelope window materials are perfect for window patching applications.

 

Extrusion Seam

Specially developed envelope adhesive products provide extra security for the bottom flap, the pointed bottom flap, and the inner and outer side flaps, even in high-speed production processes. Security is the most important aspect of envelope assembly. Henkel adhesives provide:

  • Low-splash operation
  • Short setting time
  • Good lay-flat ability
  • Minimal thickening
  • High shear strength
  • Constant viscosity
  • Minimal spraying
  • No hairline formation during process
  • Completely homogeneous adhesives.

Front Seal

Henkel provides a complete system for all types of closings. Regardless of specific function, Henkel adhesives can be relied upon for quick adhering, dependable closing, and the ability to remain fully functional after long storage periods. Henkel envelope adhesives provide:

  • Absolute lay-flat ability
  • High blocking resistance
  • Short reactivating time
  • Short setting time
  • Greatest possible protection from unauthorized opening
  • Glossy adhesive film, also in synthetic resin dispersions.

Window Patch

Customers expect a high wet tack and perfect joining after adherence. The joint is completely flat and does not warp. In window patching, it is important to have clean-running adhesives to support high wet tack, flat, warp-free joining, broad adhesion, and low splash in high-speed production. Henkel adhesives provide: 

  • Broad adhesion spectrum
  • Minimal thickening
  • Clean running and low in splashing.

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