Dry treatment process for foamed synthetic leather of multilayer structure
A technology of dry processing and synthetic leather, which is applied in the direction of pretreatment surface, coating, and surface coating liquid device, etc., which can solve the problems of large damage to the release paper, reduced production efficiency, and lengthened oven, so as to improve production The effect of improving quality, improving production efficiency and reducing energy consumption
Inactive Publication Date: 2016-12-07
浙江嘉科新材料科技有限公司
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[0003] The purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art and provide a dry treatment process for foamed synthetic leather with a multi-level structure, which aims to solve the problem of lengthening the oven caused by the increase in the number of layers of the film in the prior art. Reduced efficiency, serious energy consumption, and large technical problems of release paper damage
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[0023] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below through the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described here are only used to explain the present invention, and are not intended to limit the scope of the present invention. Also, in the following description, descriptions of well-known structures and techniques are omitted to avoid unnecessarily obscuring the concept of the present invention.
[0024] refer to figure 1 , the embodiment of the present invention provides a dry treatment process of multi-level structure foamed synthetic leather, which includes the following steps in turn:
[0025] a) Release paper unwinding: install the release paper roll on the release paper unwinding roller 1, after the release paper passes through the pressure roller 2 and the memory 3 in turn, it passes thro...
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The invention discloses a dry treatment process for foamed synthetic leather of a multilayer structure. The dry treatment process sequentially comprises the following steps of release paper unwinding, first coating of a coating, drying and cooling, second coating of a coating, drying and cooling, third coating of a coating, pre-drying treatment, base cloth attachment, drying and cooling and paper-leather separation, and the foamed synthetic leather of the multilayer structure is obtained. According to the dry treatment process for the foamed synthetic leather of the multilayer structure, a microwave mode is adopted for heating drying, the evaporation rate of water in the coatings is increased, the interiors of the coatings can be heated at the same time through microwave drying, and the production quality of the synthetic leather is improved. Release paper is arranged on the heated face away from the coatings, so that the temperature is relatively low, and damage to the release paper is lower. In addition, a carbon crystal terrestrial heat film is used in cooperation, a heat preservation function is achieved, heat losses are avoided, energy consumption is reduced, the production efficiency of oil-based or waterborne polyurethane synthetic leather is greatly improved, and the production cost is reduced.
Description
【Technical field】 [0001] The invention relates to the technical field of synthetic leather production, in particular to a dry treatment process for foamed synthetic leather with a multi-level structure. 【Background technique】 [0002] Dry-process synthetic leather is a multi-layer structure composed of a multi-layer film obtained by coating a resin solution on a base cloth and volatilizing its solvent and adding a base cloth. At present, oil-based or water-based polyurethane resin solutions are mostly used as coatings for the production of high-quality synthetic leather, and the use of water-based resins to produce synthetic leather requires more energy to dry the leather than the use of oily resins to produce synthetic leather. If the traditional hot air convection tanning drying technology is used, the drying efficiency is low, the energy consumption is large, and the drying requirements cannot be met, resulting in a greatly reduced production efficiency. In the production...
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IPC IPC(8): D06N3/00D06N3/14B05D1/38B05D1/28B05D3/02
CPCD06N3/0097B05D1/28B05D1/38B05D3/029D06N3/14
Inventor 郑嗣铣
Owner 浙江嘉科新材料科技有限公司