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Poly ester baking finish for vacuum plated aluminum film and its preparing method

A technology of vacuum aluminum plating and baking paint, which is applied to polyester coatings, devices for coating liquid on the surface, coatings, etc., and can solve problems such as insufficient density, aluminum layer peeling off, and no polyester vacuum aluminum plating film. , to achieve the effect of excellent adhesion and excellent flexibility

Inactive Publication Date: 2008-04-23
HUANGSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the production process of domestic enterprises producing PET gold and silver vacuum aluminized film is mostly designed according to the second method. Since there is no special baking paint, the preparation of domestic non-oxidizing PET aluminized film color paint largely depends on imports; Or use domestic surface decoration baking varnish and coil material baking varnish, and add auxiliary additives to make it. During the dyeing and color fixing process, the resulting product is prone to cause the aluminum layer to fall off due to insufficient alkali resistance or insufficient density. Discoloration; there is still a certain gap between the quality and imported products
There is no patent or literature report on special baking varnish for polyester vacuum aluminized film in China

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1：PET preparation example 1

[0033] In the dry high-speed dispersing equipment, sequentially add 12 grams of acrylic resin with a solid content of 50-60%, a hydroxyl value of 60mgKOH / g, and a molecular weight of 10,000, a solid content of 50-60%, a hydroxyl value of 30mgKOH / g, and a molecular weight of 10 grams of 16000 acrylic resin, 3.5 grams of full methyl etherified melamine resin, 1 gram of benzomelamine, 2 grams of epoxy resin, 6 grams of methoxybutyl acetate, 3 grams of leveling agent, 2 grams of methyl ethyl ketone, two 11 grams of toluene, stirred at high speed for 10 minutes, added acid dye R35 pre-dispersed in ethanol (15 grams of dye dispersed in 8 grams of ethanol), stirred at high speed for 5 minutes, diluted with a solvent to a predetermined viscosity, and discharged.

example 2：PET preparation example 2

[0035] In the dry high-speed dispersing equipment, successively add 12 grams of acrylic resin with a hydroxyl value of 60 mgKOH / g and a molecular weight of 10,000, 5 grams of fully methylated melamine resin, 2 grams of epoxy resin, and 4 grams of methoxybutyl acetate, 3 grams of butanol, 3 grams of leveling agent, stirred at high speed for 5 minutes, added polyester resin liquid pre-dispersed in methyl ethyl ketone and toluene (solid content is 50-60%, hydroxyl value is 30mgKOH / g, molecular weight is 6000 10 grams of polyester resin are dispersed in the mixed solvent of 5 grams of methyl ethyl ketone and 7 grams of xylene), continue high-speed stirring for 5 minutes, then add the acid dye R35 pre-dispersed in ethanol (15 grams of dyes are dispersed in 8 grams of ethanol ), and then stirred at a high speed for 5 minutes, and then diluted with a solvent to a predetermined viscosity before discharging.

example 3

[0036] Example 3: PET vacuum aluminized film amino baking varnish products

[0037] Get any baking varnish that makes in example 1-2, roller is coated on the surface of PET vacuum aluminized film, process condition is that curing temperature is 180-250 degree, production line speed 30-80m / min, curing time is 30-50 second . After the coated PET aluminized film is cut and spun, a PET gold and silver aluminized film product with good fullness, high gloss and excellent decoration is formed. After coloring and drying, the paint film can withstand acetone scrubbing ≥ 100 times, and can withstand alkali boiling for more than 20-30 minutes without matting and coloring. Meet the dyeing and color fixing requirements of PET gold and silver wire products.

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PUM

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Abstract

The present invention relates to chemical technology, and provides the preparation and application of one kind of high performance quick drying polyester baking varnish for vacuum coated PET film on aluminum. The baking varnish is compounded with amino resin, filming resin, auxiliary resin, dyeing, solvent and assistant. The amino backing varnish is coated at 180-250 deg.c in a production line of 30-80 m / min speed and cured quickly to form thermosetting varnish film. The amino backing varnish has solid content of 15-30 wt% and fineness of 15-25 microns. The formed varnish film has thickness of 10-25 microns, color fastness, excellent decoration performance and excellent physical and chemical performance. The baking varnish may be used in decoration of fabric and clothing.

Description

technical field [0001] The invention relates to the chemical industry field, and relates to a high-performance quick-drying PET vacuum aluminized film (VMPET) baking varnish and a preparation method thereof. Background technique [0002] The polyester vacuum aluminized film gives the painted paint a metallic luster, but because the aluminized layer is under high-temperature alkaline conditions, such as high-temperature alkali cooking dyeing of fabrics and steam color-fixing processes, it is easily oxidized and the paint film is toned; In addition, the insufficient density of the paint film also leads to the loss of gloss and fading of the paint. Taking PET gold and silver aluminized film as an example, when high-grade fabrics, such as silk, are interwoven with gold and silver threads cut from PET gold and silver aluminized film, gold and silver threads that are not oxidized must be used, mainly because the fabric is dyed. Alkaline conditions will oxidize the aluminum layer ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D167/00B05D7/14
Inventor 方红霞
Owner HUANGSHAN UNIV
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