CN102009036A - A graining roll-coating production-line method for waterborne coating material of wooden furniture - Google Patents

Abstract

The invention relates to a graining roll-coating production-line method for carpentry waterborne coating material on medium density fiber board. The invention is characterized by the following steps: (1) processing raw material; (2) roll coating waterborne white primer; (3) roll coating middle-coating primer; (4) roll printing to color; (5) roll coating fining varnish. The invention is advantageous in that the environment-friendly waterborne carpentry material and the novel coating method are applied on low-priced heavy density fiberboards to produce high-quality furniture boards with graining coating effect, provided with low coating consumption, high coating effectiveness and low coating cost]

Description

Water-borne wood coating is imitated wood grain rollercoat line coating process

Technical field

The present invention relates to a kind of water-borne wood coating imitative wood grain effect rollercoat line coating process on medium density fibre board (MDF).

Background technology

At the furniture paint industry, the varnish coloring and coating occupies most markets.The varnish coloring and coating generally all carries out on fiberboard lagging base material.This style is why popular to be because it has kept the native texture of timber.Growing along with the furniture demand, also when the river rises the boat goes up for the natural timber price, and come more and can not meet the need of market.And varnish coated production cost is higher, and efficient is relatively low, in order to reduce production costs, the coating process of some imitative wood grain effects arises at the historic moment, although the varnish coated effect of its effect and natural timber also has certain difference, has satisfied the demand of some low and middle-grade furniture markets greatly.And it has efficiently, environmental protection, characteristics that cost is low.

Summary of the invention

The purpose of this invention is to provide a kind of water-borne wood coating imitative wood grain effect roller coat coating process on medium density fibre board (MDF), to solve expensive, the low efficiency problem that the current varnish coated effect that is base material with natural wooden skin is faced.The present invention designs a kind of water-borne wood coating imitative wood grain effect rollercoat line coating process on medium density fibre board (MDF), it is characterized in that may further comprise the steps:

(1) material is handled: for plate face defectiveness or irregular fiberboard, need to adopt aqueous putty to criticize and be coated with levelling, and polish flat.Sand milling can be used 240#～360# sand paper.So-called aqueous putty be meant be used for woodwork coating be usually used in squeegee or the general putty of levelling, be different from the aqueous putty in the building coating.Can not process for plate face very smooth middle density or high density fiberboard after batch being coated with putty, directly enter next procedure.

(2) roller coat water-based white primer: based white primer will be sought quickness dried and good covering power is arranged; Each roller coat thickness is at 25～50um, 120～140 ℃ of infra-red dryings 3～5 minutes, 240#～360# sand paper light weight sand.The general rubber rollers of using repeats roller coat 2～3 times, and per pass need be polished.

(3) prime in the roller coat: construction method and the same water-based white primer of used roller.In to prime generally be that the background color mainly as imitative wood grain effect is generally light brown, chestnut look through toning, in order to show the level effect of wood texture especially, background colour also can be pink colour or ivory buff sometimes.Roller coat number of times 2～3 times is as the criterion to fill and lead up the MDF base material fully, and per pass all need be polished.

(4) roll marks is painted: this step is the core of this technology.Painted employing roll marks mode.Roll marks is identical with method of roll coating, and roller is textured rubber rollers when being roll marks, and each rubber roll all has a specific texture.The color of roller coat texture depends on coating, generally as required, adopts the toning of specific varnish and colouring agent to mix.Roll coating model is identical with (1).Roller coat together, 120～140 ℃ of infra-red dryings 3～5 minutes, need not polish in this road.

(5) roller coat clear finish.After (4) operation finishes, carry out UV lacquer cover.The UV lacquer can be a water-based, also can be oiliness.When making use UV varnish, need 45 ℃～50 ℃ infra-red dryings (tape drum wind) to carry out the uviol lamp drying after 3～5 minutes; Can directly carry out the uviol lamp drying when using oiliness UV lacquer.UV varnish can be Gao Guang, also can be low light.Uviol lamp is the mercury lamp of wavelength 280～360nm.The roller coat number of times is 2～3 times, and interlayer can half-driedly not polished, last one bone dry.Advantage of the present invention is on the heavy density fiber board of less expensive, adopt the water-borne wood coating of environmental protection and novel coating process, produce the furniture panel of the imitative wood grain painting effect of function admirable, have that paint waste is little, coating efficiency is high, an environmental protection, characteristics that painting cost is lower.

The specific embodiment:

(1) material is handled: for plate face defectiveness or irregular fiberboard, adopt aqueous putty to criticize and be coated with levelling, air drying is smooth with sand papering after 1～2 hour, sand paper is 240#～360#, can directly enter next procedure for plate face very smooth middle density or high density fiberboard after batch being coated with putty.

(2) roller coat water-based white primer: based white primer is selected for use dried soon and good covering power is arranged; Each roller coat thickness is at 25～50um, and 120～140 ℃ of infra-red dryings 3～5 minutes with 240#～360# sand paper light weight sand, are generally used rubber rollers, repeat roller coat 2～3 times, and per pass need be polished.

(3) prime in the roller coat: construction method and the same water-based white primer of used roller, in prime generally be through the toning, be light brown, chestnut look or pink colour, ivory buff, can select nut-brown model for use, roller coat number of times 2～3 times is as the criterion to hide white primer fully, and per pass all need be polished, the last 600# sand paper sand milling of need using together is smooth, is as the criterion to fill and lead up the MDF base material fully.

(4) roll marks is painted: painted employing roll marks mode, and the roller of roll marks is textured rubber rollers, rubber rollers is selected the walnut texture for use, the color of roller coat texture depends on coating, it is nut-brown to adopt the toning of varnish and colouring agent to mix, roller coat together after, 120～140 ℃ of infra-red dryings 3～5 minutes.

(5) roller coat clear finish: after (4) operation finishes, carry out UV lacquer cover, the UV lacquer can be a water-based, can be oiliness also, when making use UV varnish, needs 45 ℃～50 ℃ infra-red dryings of tape drum wind, carries out the uviol lamp drying after 3～5 minutes; Can directly carry out the uviol lamp drying when using oiliness UV lacquer, uviol lamp is the mercury lamp of wavelength 280～360nm, and the roller coat number of times is 2～3 times, and interlayer can half-dried back roller coat, last one bone dry.

Claims (1)

1. water-borne wood coating is imitated wood grain rollercoat line coating process, it is characterized in that may further comprise the steps:

(1) material is handled: for plate face defectiveness or irregular fiberboard, adopt aqueous putty to criticize and be coated with levelling, and smooth with sand papering, sand paper is 240#～360#, can directly enter next procedure for plate face very smooth middle density or high density fiberboard after batch being coated with putty.

(2) roller coat water-based white primer: based white primer is selected for use dried soon and good covering power is arranged; Each roller coat thickness is at 25～50um, and 120～140 ℃ of infra-red dryings 3～5 minutes with 240#～360# sand paper light weight sand, are generally used rubber rollers, repeat roller coat 2～3 times, and per pass need be polished.

(3) prime in the roller coat: construction method and the same water-based white primer of used roller, in prime generally be through the toning, be light brown, chestnut look or pink colour, ivory buff, be as the criterion to fill and lead up the MDF base material fully.

(4) roll marks is painted: painted employing roll marks mode, the roller of roll marks is textured rubber rollers, each rubber rollers all has a specific texture, the color of roller coat texture depends on coating, generally as required, adopt the toning of specific varnish and colouring agent to mix, roller coat together after, 120～140 ℃ of infra-red dryings 3～5 minutes.

(5) roller coat clear finish: after (4) operation finishes, carry out UV lacquer cover, the UV lacquer can be a water-based, can be oiliness also, when making use UV varnish, needs 45 ℃～50 ℃ infra-red dryings of tape drum wind, carries out the uviol lamp drying after 3～5 minutes; Can directly carry out the uviol lamp drying when using oiliness UV lacquer, uviol lamp is the mercury lamp of wavelength 280～360nm, and the roller coat number of times is 2～3 times, and interlayer can half-dried back roller coat, last one bone dry.