Enhanced printing and aluminum plating water-based polyester primer and preparation method thereof

A water-based polyester and water-soluble polyester technology, applied in polyester coatings, coatings, etc., can solve problems such as decreased adhesion, decreased strength of printing layer and aluminized layer, decreased adhesion strength of printed layer and aluminized layer, etc. , to achieve the effect of high water resistance, good water dispersibility and dispersion stability, and excellent bonding strength
CN104231879BActive Publication Date: 2016-09-28NANTONG GAOMENG NEW MATERIAL
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NANTONG GAOMENG NEW MATERIAL
Publication Date
2016-09-28

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Abstract

The invention discloses a water-based polyester primer for enhanced printing and aluminum plating and a preparation method thereof, belonging to the field of chemical primer preparation. The primer is composed of the following components by weight: 25-45 water-soluble polyester polyol resins, 42-70 deionized water and 5-13 cosolvents; The molecular mass is 12000-18000, the acid value is less than 2mgKOH / g, the hydroxyl value is 5-10mgKOH / g, and the glass transition temperature is 60-70°C. The primer has a solid content of 25-45 percent, a rotational viscosity of 50-200 mPa·s at 25° C. and a pH value of 4-7. The water-based primer has excellent bonding strength with the PET film, ink layer, and aluminum-coated layer. The PET printing film and PET aluminum-plated film using the water-based primer have excellent water resistance, high temperature resistance, and internal resistance. Stress shrinkage and other properties.
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Description

technical field

[0001] The invention relates to the field of chemical primer preparation, in particular to a water-based polyester primer capable of enhancing the adhesion of PET printing ink and aluminum plating and a preparation method thereof. Background technique

[0002] Various forms of PET printing films and aluminized films are widely used in flexible packaging, hard packaging, decorative materials and other fields. These PET printing films or aluminized films often need to be bonded to another substrate through adhesives during application. This involves the bonding between three interfaces: PET film-ink layer or aluminized layer-adhesive layer-second substrate, requiring a relatively strong bond between the ink layer or aluminized layer and the PET film. High adhesion.

[0003] The methods of enhanced printing and aluminum plating include corona treatment and primer treatment, among which corona treatment is the most commonly used film surface treatment method, bu...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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