Water-borne wood ware paint drying equipment and method

A technology of water-based wood paint and drying equipment, which is applied in the direction of pretreatment surface, coating, and surface coating liquid device, etc., which can solve the unfavorable automation of kiln drying equipment, assembly line production operation, large heat loss, and difficult dynamic adjustment Problems such as temperature and humidity, to achieve the effect of small energy dissipation, low drying energy consumption and production cost, and convenient automation

Inactive Publication Date: 2018-01-09
ZHEJIANG FORESTRY ACAD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still some deficiencies in the hot air drying equipment for water-based wood paint. The kiln-type drying equipment is not conducive to automation and assembly line production operations. The semi-open box-type drying equipment is not easy to dynamically adjust the temperature and humidity, and the heat loss is large.

Method used

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  • Water-borne wood ware paint drying equipment and method

Examples

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Effect test

Embodiment 1

[0044] A method for drying an aqueous polyurethane primer, comprising the following steps:

[0045] (1) Temperature and humidity adjustment in the drying section: the drying section starts to heat up first, the circulation fan is turned on, the wind speed is 1.5m / s, and the temperature of the cavity is controlled at 50°C. When the temperature is 10% lower than the set value, the U-finned stainless steel heating tube starts to heat; when the temperature exceeds 10% of the set value, the U-shaped finned stainless steel heating tube stops heating, the dehumidification fan is turned on, and the hot air passes through After the outlet of the dehumidification fan enters the heat pump dehumidification dryer with the waste heat returning component, it enters the preheating section through the air inlet 15. After starting to heat up in the cavity of the drying section, the relative humidity of the cavity of the drying section is controlled at 45%. When the relative humidity is 20% low...

Embodiment 2

[0050] A method for drying one-component water-based polyurethane paint, comprising the following steps:

[0051] (1) Temperature and humidity adjustment in the drying section: the drying section starts to heat up first, the circulation fan is turned on, the wind speed is 1m / s, and the temperature of the cavity is controlled at 45°C. When the temperature is 15% lower than the set value, the U-finned stainless steel heating tube starts to heat; when the temperature exceeds 15% of the set value, the U-shaped finned stainless steel heating tube stops heating, the dehumidification fan is turned on, and the hot air passes through After the outlet of the dehumidification fan enters the heat pump dehumidification dryer with the waste heat returning component, it enters the preheating section through the air inlet 15. After starting to heat up in the cavity of the drying section, the relative humidity of the cavity of the drying section is controlled at 55%. When the relative humidit...

Embodiment 3

[0056] A method for drying two-component waterborne polyurethane paint, comprising the following steps:

[0057] (1) Temperature and humidity adjustment in the drying section: the drying section starts to heat up first, the circulation fan is turned on, the wind speed is 0.5m / s, and the temperature of the cavity is controlled at 35°C. When the temperature is 15% lower than the set value, the U-finned stainless steel heating tube starts to heat; when the temperature exceeds 15% of the set value, the U-shaped finned stainless steel heating tube stops heating, the dehumidification fan is turned on, and the hot air passes through After the outlet of the dehumidification fan enters the heat pump dehumidification dryer with the waste heat returning component, it enters the preheating section through the air inlet 15. After starting to heat up in the cavity of the drying section, the relative humidity of the cavity of the drying section is controlled at 65%. When the relative humidi...

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Abstract

The invention discloses water-borne wood ware paint drying equipment. The drying equipment comprises a preheating segment, a drying segment and a curing segment, wherein the preheating segment is usedfor eliminating the temperature gradient of a paint film surface core layer on a material; the drying segment is used for guaranteeing surface dryness and actual dryness of the paint film on the material by control the temperature and the humidity; and the curing segment is used for increasing the actual dry degree of the paint film. A water-borne wood ware paint drying method comprises the following steps of 1, conducting temperature and humidity adjustment on the drying segment; 2, conducting temperature and humidity adjustment on the curing segment; 3, conducting temperature and humidity adjustment on the preheating segment; and 4, conducting material feeding, wherein after the temperature and humidity of the drying segment and the curing segment are stabilized, the material starts toenter cavities of the preheating segment, and the drying time, in each cavity, of the material is separately controlled. By means of the water-borne wood ware paint drying equipment and method, the temperature and humidity can be changed gradually; production line work can be conducted; and processing efficiency is high. The water-borne wood ware paint drying equipment and method are applicable toone-component water-borne wood ware paint and two-component water-borne wood ware paint at the same time.

Description

technical field [0001] The invention belongs to the category of water-based wood lacquer drying in the field of wood and bamboo processing, and in particular relates to a water-based wood lacquer drying equipment and a drying method thereof. Background technique [0002] With the improvement of people's living standards, the enhancement of environmental protection awareness and the strict restrictions on the content of volatile organic compounds (VOC) in coating systems by the environmental protection laws of various countries, water-based paints with excellent environmental performance have ushered in a huge space for development. At present, water-based wood lacquers have been more and more used in wooden toys, furniture, floors and other fields. Its environmental protection performance is obviously better than that of oil-based wood lacquers, but it faces some problems and challenges in drying. The drying process of water-based wood paint is different from that of oil-bas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D3/02B05D3/04
Inventor 徐康李琴张建袁少飞王洪艳张家祖
Owner ZHEJIANG FORESTRY ACAD
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