High solid content water-based adhesive bead planting process and production line

Abstract

The invention relates to a process and a production line for conducting bead planting on a PET film through a high solid content adhesive. According to the process and the production line, the 1.0-5.0 CS PET film is unreeled through an unreeling roller and enters an adhesive groove through guide rollers; after an adhesive pasting roller located in an adhesive tank conducts adhesive pasting on one face of the PET film and after a 10-80 g wire bar conducts smearing on the face where the adhesive is pasted, the PET film enters a dying oven to be dried; bead planting is conducted on the dried PET face with an adhesive face through a bead planting roller, a micro-bead tank and glass micro-beads in the micro-bead tank; the PET face where bead planting is conducted enters a composite roller and a pressing roller to be extruded and composited; finally, the PET film is wound up through a wind-up roll. The process and the production line have the advantages that the phenomenon that a belt is broken in the transferring and compositing process in the later period of a low solid content water-based adhesive and a bead planting film is eliminated; the thickness of a coating does not need to be controlled through manual ruler insertion, and therefore man-made uncontrollable factors are greatly reduced; the length of a drying passageway is reduced, the influences of moisture existing after drying on vacuum plating aluminum are reduced, and therefore errors caused when the thickness of the coating is controlled in a manual mode are greatly reduced, the production process is simplified, and production cost is reduced.

Description

technical field [0001] The invention relates to a bead planting process and production line by using high-solid-content water-based glue on a PET film, belonging to the field of reflective material manufacturing. Background technique [0002] The existing bead planting process of reflective materials adopts the traditional comma blade coating method. This coating method is composed of a scraper and a bottom roller. Thick coatings and high-viscosity adhesives are not suitable for low-solid water-based adhesives and late-stage transfer and compounding of bead-planted films. Belt breaks often occur during production, and the thickness of the coating requires manual plugging. Ruler control, there is a large error, and the high foam of the flowing water-based glue will affect the surface state of the coating, and the low solid content has a large moisture content, which requires a long drying tunnel to dry, and is sensitive to tension , Wrinkles often appear in the drying tunnel...

AI Technical Summary

Problems solved by technology

[0002] The existing bead planting process of reflective materials adopts the traditional comma blade coating method. This coating method is composed of a scraper and a bottom roller. Thick coatings and high-viscosity adhesives are not suitable for low-solid water-based adhesives and late-stage transfer and compounding of bead-planted films. Belt breaks often occur during production, and the thickness of the coating requires manual plugging. Ruler control, there is a large error, and the high foam of the flowing water-based glue will affect the surface state of the coating, and the low solid content has a large moisture content, which requires a long drying tunnel to dry, and is sensitive to tension , Wrinkles often appear in the drying tunnel, even so, there is still a lot of moisture in the film coming out of the drying tunnel (the length of the drying tunnel is 10-30 meters), which has a great impact on the later vacuum aluminum plating, and the above defects greatly affect production and product quality

Secondly, the traditional conventional wire rod adopts cold-drawn steel rod in structural design and spiral steel wire is wound on the surface of the cold-drawn steel rod, which is not only easy to break the wire during use, but also difficult to clean and poor in leveling

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