H.B. Fuller Lunatack™ HL 3379

Identification

GBU

HHC

RTU Product Type

Hot Melt Adhesive,

1K (1 component) Adhesive,

2K (2 component) Adhesive

Categories

Markets → Industrial → Applications → Paper & Pulp → Pulping & Processing

Markets → Printing & Packaging → Applications → Tapes, Labels & Adhesives → Bookbinding Adhesives

Technologies → Adhesives & Sealants → Product Families → Bonding Technology → Hot Melt Nonreactive Adhesives

Applications

Application Area

Book Blocks,

Brochures,

Paperbacks

Application Method

Roller

Compatible Substrates & Surfaces

Paper

Segment

Graphic Arts and Bookbinding

Applications & Uses

Application Instructions

Apply with rollers. This adhesive can be processed on all perfect binding units at medium or high speed.

Open time: medium

Recommended processing temperatures:

• One-Shot System:
  • Pre-melter: approx. 150°C
  • Glue Pot: on the roller 170°C – 175°C
• Two-Shot System:
  • Primer: on the roller 175°C
  • Main Glue: on the roller 160°C – 170°C

It is important to ensure that the desired level of adhesion is obtained on the necessary substrates, including long-term tests.

Cleaning Instructions

We recommend using a solid hot melt cleaning agent for applicators and adhesive tanks, and a liquid wipe-on or cold soak cleaning solution for machine parts.

Suitable Substrates

Used for all uncoated; bible and single coated paper qualities.

Typical Applications

Developed for the perfect binding and gluing off brochures, paperbacks and book blocks and in One-Shot and Two-Shot Systems. It can used as primer and as main glue in Two-Shot System.

Features

Ready-to-Use Product Features

Excellent Melt Stability,

Good Adhesion,

Heat Resistance,

Long Shelf Life,

Excellent Roundability,

Good Cold Resistance,

Very Good Lay-Flat Properties

Packaging & Availability

Regional Availability

• Europe
• India/MiddleEast/Africa (IMEA)

Physical Properties

Color (Properties)

White

Film Appearance

Elastic, dry, flexible

Properties

Shelf Life:

24 months

Viscosity:

3000 cps

Processing Properties

	Value	Units	Test Method / Conditions
Processing Temperature (one-shot system, glue pot: on the roller)	170 - 175	°C	-
Processing Temperature (one-shot system, pre-melter)	approx. 150	°C	-
Processing Temperature (two-shot system, main glue: on the roller)	160 - 170	°C	-
Processing Temperature (two-shot system, primer: on the roller)	175	°C	-

Typical Properties

	Value	Units	Test Method / Conditions
Film	Elastic, dry, flexible	-	-
Softening Point	approx. 77	°C	ASTM E28-99, Ring and Ball Test
Viscosity (at 150°C, spindle 27)	approx. 6000	mPa.s	ASTM D 3236-88, Brookfield RV
Viscosity (at 170°C, spindle 27)	approx. 3,000	mPa.s	ASTM D 3236-88, Brookfield RV

Storage & Handling

Storage Conditions

In original sealed packaging protected from sun, dust, moisture and high temperatures in clean and dry conditions.

Shelf Life

24 months