LOCTITE® LIOFOL® LA 7773-21

1 of 50 products in this brand
LOCTITE® LIOFOL® LA 7773-21 is a two-component solventless polyurethane adhesive. This adhesive is designed for flexible packaging laminating applications. Once cured, it creates an optically clear, odor-free, and elastic bond. This adhesive is suitable for use in medium and high-performance packaging applications. It is well-suited for general laminating, including film/film laminations, including high slip films. Additionally, it is characterized by being aliphatic and non-yellowing.

Supplied By: Henkel Corporation

Product Code: H01503

Regional Availability: Canada

Product Type: Adhesive, Solvent free (100% Solids) Adhesive

Application Method: Roller

    Enhanced TDS

    Identification & Functionality

    Features & Benefits

    Labeling Claims
    Ready-to-Use Product Features

    Applications & Uses

    Markets
    Applications
    Segments
    Applications
    Application Method
    Compatible Substrates & Surfaces
    Recommended Applications

    Designed for medium performance, general purpose laminating at high line speeds. It can be used for film/film and food packaging laminations. Long pot life and rapid cure are advantages of the LOCTITE LIOFOL LA 7822/LOCTITE LIOFOL LA 6249 solventless adhesive system. Customers that desire longer pot life due to frequent roll changes or high humidity environments will find utility in this system.

    Other Applications:
    This adhesive also can be used for general-purpose food packaging laminations, health care, pharmaceutical and cosmetic applications.

    Adhesive Selection

    The selection of the adhesive system, substrates, and process conditions are critical to the success of the final structure. Thorough qualification on your equipment and substrates is recommended before commercial production begins.
    Note: Although not common, some high slip containing films, EVA films, PA films and white-pigmented PE films may contribute to the migration of monomeric MDI with this adhesive system. This can have a detrimental effect on the final sealing ability of the lamination and result in anti-seal. You should thoroughly pre-test the laminations.

    Adhesive Mixing

    This adhesive system requires the use of Meter/Mix/Dispense (MMD) equipment that will automatically measure and mix the correct amounts of adhesive and deliver them to the laminator. Verification that the unit is providing the correct amounts of adhesive and coreactant is recommended prior to startup. If the MMD unit is capable of phasing issues (one material enters the static mixer before the other) verification that each side is being dispensed at precisely the same time is required. The adhesive is sensitive to moisture. Tanks or large containers such as drums will require nitrogen purging or the attachment of a desiccant dryer.

    Applications Procedure

    The recommended method of application for this product is with a series of rubber and steel, smooth surface transfer rollers on a specially designed solventless adhesive laminator. The adhesive is mixed by the MMD unit, deposited onto the first two rollers, and metered by the remaining rollers in the application station (typically 3 to 5 rollers). To improve the flow characteristics of the adhesive, heat the first two rollers to 95 - 113°F (35- 45°C). The final application roller should be heated to 104 - 131°F (40 - 55°F). Modification of these temperatures may be required depending on line speed, substrates, and roller size.

    Properties

    Appearance
    Clear to yellow

    Regulatory & Compliance

    Certifications & Compliance
    Regulatory Statements

    All components of this adhesive system compositionally comply with the FDA 21 Code of Federal Regulation 175.105.

    Packaging & Availability

    Packaging Type
    Regional Availability
    • Canada

    Storage & Handling

    Storage Conditions

    These products have a storage life of twelve months from date of manufacture. They should be held at normal warehousing temperatures and stored in the original, unopened containers. Containers of the adhesive or curing agent should not remain open for an extended period of time. Material from opened containers should be consumed within a short period. It is necessary to use all the adhesive, once the container is opened, unless there is means of purging the container with dry nitrogen. If exposed to below freezing temperatures, these products may solidify. Large containers (drums and pails) may be slow to reliquify. Slight warming at 104 - 122°F (40 - 50°C) will aid the process. Freezing and thawing have no effect on the performance of this product.

    Handling Information

    The adhesive, as received, has chemically active Isocyanate groups that will react with water, alcohols, amines, and similar materials containing active hydrogen groups. Reseal containers and keep them tightly closed to maximize the storage life. Nitrogen purging of original containers will have a similar effect. Upon request, a DRIERITE® desiccant unit will be supplied with the first drum to ensure that dry air enters the drum as adhesive is withdrawn.