Selection principle of rainproof tarpaulin dyes

The rainproof tarpaulin manufacturer's products are dyed with dyes, but when choosing a suitable dye, please follow the following principles. Choose dyes according to the performance of the rainproof tarpaulin dyeing machine: Different dyeing machines have different properties and requirements for dyes. When used for jigging, please choose dyes with high directness. When rolling, please choose dyes with low directness for tarpaulins. Otherwise, there will be products that do not meet the requirements, such as dark front and back light, uneven color, etc. Choose dyes according to the cost of tarpaulin dyes: When choosing dyes, not only the shade and firmness, but also the cost and supply source of tarpaulin dyes and additives used must be considered. For higher-priced dyes, try to replace them with other dyes that can dye the same effect to reduce production costs. The rainproof tarpaulin selects the dye according to the properties of the fiber: the properties of each fiber are different, and the appropriate dye needs to be selected when dyeing. For example, when cotton fiber is dyed, because its molecular structure contains a large number of hydrophilic hydroxyl groups, it is easy to absorb moisture and expand, chemically react with reactive groups, and is resistant to alkali. Therefore, dyes such as reduction, vulcanization, ice dye, and reactive dyes can be directly selected for dyeing. . Polyester has strong hydrophobicity, high temperature and alkali resistance, rain-proof tarpaulin generally does not choose the above dyes, but must choose disperse dyes for dyeing.

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