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Self-adhesive laminating machine material laminating method

  • Publish Time: 2020-08-07
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        1. Laminating method of self-adhesive laminating machine
        The laminating film of the self-adhesive laminating machine is generally a transparent BOPP film laminated on a paper-based self-adhesive material, which can achieve the purpose of protecting the pattern, waterproofing, anti-corrosion, and increasing the three-dimensional sense of the label. Other types of films, such as PET and PVC, can also be used as composite films, but their applications are not universal. Due to the high cost of paper roll material coating, it has been gradually replaced by UV coating process.
        The self-adhesive laminating machine is divided into sheet paper laminating and roll material laminating according to the printing process of raw materials. The sheet of paper is laminated on the laminator. The roll material is compounded on the compounding station of the labeling machine or on a special compounding machine.
        ①Single-sheet paper laminating
        According to the functions of the laminating equipment and the characteristics of the composite film, the sheet-fed self-adhesive laminating machine has two laminating methods:
        Instant coating compound-finish on laminating machine. The compounding process is: firstly, the adhesive is coated on the surface of the BOPP film on the roll, and the solvent in the adhesive is volatilized by the drying device, and then the single sheet of paper is compounded with the roll film at the compounding station. The two become one under the squeeze of the roller to complete the coating process.
        Pre-coated film composite-The surface of the composite film is pre-coated with adhesive, and there are two types of films, hot melt adhesive and pressure sensitive. The laminating machine is equipped with a heated embossing roller. When laminating, the pre-coated film is in contact with a single sheet of paper. Under the action of the hot pressing roller, the adhesive melts, so that the film and the paper are bonded together. If a pressure-sensitive composite film is used, the heating power can be turned off, and only pressure is used for composite.
        ②Roll paper coating
        According to the different equipment, roll paper film can be divided into:
Composite film with bottom paper is used for lamination-on the labeling machine, a special composite film with bottom paper is used, and the film is covered under the action of a composite device. This is a traditional way of laminating. In recent years, it has been replaced by the process of using bottomless paper composite film.
        Bottomless paper composite film lamination-carried out on the labeling machine, the principle of lamination is basically the same as the bottom paper composite film lamination process. The bottomless paper film is rewinded to replace the bottom paper by the surface smoothness (surface tension) of its own material. After the adhesive is bonded to its surface, it can be peeled off without leaving any adhesive marks. The material used in the bottomless paper film is a BOPP film with low surface tension. Bottomless paper film has low cost and is currently the most widely used lamination material.

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Laminator description and its classification introduction
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Post-printing process of self-adhesive laminating machine