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The ribbon continuous dyeing of the matters needing attention.
Continuous ribbon dyeing should pay attention to the main:
1. Weaving raw billet factors ribbon original billet must first pay attention to the yarn is the same batch of, because of different batches of yarn containing the "oil" is not the same, such as blended will become stained anthocyanin factors; secondly, the original billet is before treated and after refining the original billet staining color effect is very good, because after processing the yarn "oil" be removed dye can be directly with the contact fiber dyeing, no door.
2. The dyeing trough (or rolling cars, VAT, dyeing machine) at both ends of a roller cylinder pressure uniform size factors ribbon continuous thermosol dyeing machine rolling car general pneumatic pressure, on both sides of the roller have a cylinder. When the car running after a period of time, due to the role of water in the compressed air, the cylinder at both ends of the pressure will be different, resulting in the billet with liquid rate is not uniform, resulting in the edge of the color. In addition, both ends of the rolling machine roll pressure, have a certain deflection, caused by edge rolling over rate is not the same, can also cause the left in the right color.
3. Dye groove roller pressure size and concentricity, hardness factor in production to the roller pressure to minimize the impact on the left in the right color, then ribbon dyeing general roller pressure should be in control of more than 0.1 MPa. In the production process due to the wear of the roller, the need for regular calibration of the roller repair, otherwise easily due to the roll is not consistent with the emergence of rolling mill. Different hardness of roll from rolling over rate is not the same, too hard can lead to absorbing dye is not sufficient, too soft may lead to rolling over rate is too high cause dye produces the massive migration to produce color, hardness to should be in accordance with article decided to take.
4. An infrared pre drying temperature to the ribbon of the influence of polyester ribbon after pretreatment and padding dyeing process, before enter the hair color box generally through infrared pre drying treatment, to prevent in drying process occurred dyestuffs shift, avoid color flowers and positive and negative color dyeing defects. When the infrared pre drying temperature is lower than 80 DEG C, the ribbon is negative color, it is difficult to achieve the customer requirements. When the infrared pre drying temperature reached 100 degrees above, positive and negative phenomenon of color ribbon is greatly improved. This is due to reach 100 degrees Celsius above pre drying, moisture evaporation basic ribbon is completed, greatly reducing the possibility of dye migration. In combination with the production practice and energy consumption of dyeing, the temperature control of infrared pre drying is more suitable for 100. In the production of strip thickness according to the varieties and liquid rate, green belt liquid rate is high, the infrared pre drying temperature is higher. Actual production depends not only on an infrared pre drying temperature to control the ribbon dyeing of positive and negative difference, especially coffee, blackish green color sensitive number must be with anti migration agent used in order to achieve the good dyeing effect.
5. Baking oven solid color temperature of hair color was affected by baking hair color is continuous thermosol dyeing is an important part, baking oven solid color temperature uniformity of ribbon control centre, left and right of the chromatic aberration plays a key role. Polyester ribbon by infrared pre drying before entering the baking oven, to ensure that the temperature is the same, otherwise it will produce a clear color. The test shows that the baking oven left right temperature difference of more than 2 DEG C, ribbon color change. So, dyeing production must ensure that baking oven temperature uniformity.
6. The water rate to the ribbon left in the right color effect of polyester filament in the spinning process will add some oil agent, so before staining to after degreasing treatment. Ribbon dyeing pretreatment after drying, and baked tube surface temperature uneven will cause the blanks with different water content ratio of, can cause severe ribbon left right and centre of chromatic aberration. In the dyeing process, in order to avoid left right and centre of the chromatic aberration caused by the blanks with different moisture content, must ensure the slab in padding dye solution before completely dry, and pair of drying cylinder for regular maintenance.
7. Other generated color factors in term of production management, the influence of polyester ribbon dyeing left in the right color mainly has the following several aspects.
(1) blank with quality of the semi-finished products in the woven fabric structure, density of warp and weft, the whole tension and thickness and many other differences will cause color difference. Due to differences in the efficiency of weaving and dyeing machine production, resulting in different looms production of billet in the same dyeing and even different batches of the ribbon in the same dyeing machine dyeing, chromatic aberration. In order to minimize the influence of the quality difference on the dyeing color difference, the weaving and dyeing must be coordinated and integrated production planning ".
(2) in order to ensure the normal operation of heating equipment (such as heating tube, burning machine, etc.), normal operation of the machine, to ensure the normal operation of the heating equipment, normal temperature and temperature control. In the actual production process, but also to maintain the smooth flow of air duct and filter clean. The belt tension of the dyeing machine is very important to adjust the tension of the belt. The belt tension should be basically the same, so as to ensure the consistency of the liquid rate, so as to ensure the consistency of the color. Dyeing machine control of ribbon tension is also very important. Due to ribbon dyeing machine generally adopts frequency conversion control to adjust the whole dyeing machine tension, so to ensure that each process variable frequency control signal of the normal and the failure of the device to be timely repairs.
(3) dyes with compatibility of dyes selection of positive and negative impact on the larger color ribbon. The production of different formula the same color, the color ribbon of positive and negative difference. General choice of sublimation fastness and type (S, SE, E type) of the same or similar disperse dyes for compatibility, better dyeing effect. In addition, the use of auxiliary antimigrant, penetrant and leveling agent, dyeing of color
1. Weaving raw billet factors ribbon original billet must first pay attention to the yarn is the same batch of, because of different batches of yarn containing the "oil" is not the same, such as blended will become stained anthocyanin factors; secondly, the original billet is before treated and after refining the original billet staining color effect is very good, because after processing the yarn "oil" be removed dye can be directly with the contact fiber dyeing, no door.
2. The dyeing trough (or rolling cars, VAT, dyeing machine) at both ends of a roller cylinder pressure uniform size factors ribbon continuous thermosol dyeing machine rolling car general pneumatic pressure, on both sides of the roller have a cylinder. When the car running after a period of time, due to the role of water in the compressed air, the cylinder at both ends of the pressure will be different, resulting in the billet with liquid rate is not uniform, resulting in the edge of the color. In addition, both ends of the rolling machine roll pressure, have a certain deflection, caused by edge rolling over rate is not the same, can also cause the left in the right color.
3. Dye groove roller pressure size and concentricity, hardness factor in production to the roller pressure to minimize the impact on the left in the right color, then ribbon dyeing general roller pressure should be in control of more than 0.1 MPa. In the production process due to the wear of the roller, the need for regular calibration of the roller repair, otherwise easily due to the roll is not consistent with the emergence of rolling mill. Different hardness of roll from rolling over rate is not the same, too hard can lead to absorbing dye is not sufficient, too soft may lead to rolling over rate is too high cause dye produces the massive migration to produce color, hardness to should be in accordance with article decided to take.
4. An infrared pre drying temperature to the ribbon of the influence of polyester ribbon after pretreatment and padding dyeing process, before enter the hair color box generally through infrared pre drying treatment, to prevent in drying process occurred dyestuffs shift, avoid color flowers and positive and negative color dyeing defects. When the infrared pre drying temperature is lower than 80 DEG C, the ribbon is negative color, it is difficult to achieve the customer requirements. When the infrared pre drying temperature reached 100 degrees above, positive and negative phenomenon of color ribbon is greatly improved. This is due to reach 100 degrees Celsius above pre drying, moisture evaporation basic ribbon is completed, greatly reducing the possibility of dye migration. In combination with the production practice and energy consumption of dyeing, the temperature control of infrared pre drying is more suitable for 100. In the production of strip thickness according to the varieties and liquid rate, green belt liquid rate is high, the infrared pre drying temperature is higher. Actual production depends not only on an infrared pre drying temperature to control the ribbon dyeing of positive and negative difference, especially coffee, blackish green color sensitive number must be with anti migration agent used in order to achieve the good dyeing effect.
5. Baking oven solid color temperature of hair color was affected by baking hair color is continuous thermosol dyeing is an important part, baking oven solid color temperature uniformity of ribbon control centre, left and right of the chromatic aberration plays a key role. Polyester ribbon by infrared pre drying before entering the baking oven, to ensure that the temperature is the same, otherwise it will produce a clear color. The test shows that the baking oven left right temperature difference of more than 2 DEG C, ribbon color change. So, dyeing production must ensure that baking oven temperature uniformity.
6. The water rate to the ribbon left in the right color effect of polyester filament in the spinning process will add some oil agent, so before staining to after degreasing treatment. Ribbon dyeing pretreatment after drying, and baked tube surface temperature uneven will cause the blanks with different water content ratio of, can cause severe ribbon left right and centre of chromatic aberration. In the dyeing process, in order to avoid left right and centre of the chromatic aberration caused by the blanks with different moisture content, must ensure the slab in padding dye solution before completely dry, and pair of drying cylinder for regular maintenance.
7. Other generated color factors in term of production management, the influence of polyester ribbon dyeing left in the right color mainly has the following several aspects.
(1) blank with quality of the semi-finished products in the woven fabric structure, density of warp and weft, the whole tension and thickness and many other differences will cause color difference. Due to differences in the efficiency of weaving and dyeing machine production, resulting in different looms production of billet in the same dyeing and even different batches of the ribbon in the same dyeing machine dyeing, chromatic aberration. In order to minimize the influence of the quality difference on the dyeing color difference, the weaving and dyeing must be coordinated and integrated production planning ".
(2) in order to ensure the normal operation of heating equipment (such as heating tube, burning machine, etc.), normal operation of the machine, to ensure the normal operation of the heating equipment, normal temperature and temperature control. In the actual production process, but also to maintain the smooth flow of air duct and filter clean. The belt tension of the dyeing machine is very important to adjust the tension of the belt. The belt tension should be basically the same, so as to ensure the consistency of the liquid rate, so as to ensure the consistency of the color. Dyeing machine control of ribbon tension is also very important. Due to ribbon dyeing machine generally adopts frequency conversion control to adjust the whole dyeing machine tension, so to ensure that each process variable frequency control signal of the normal and the failure of the device to be timely repairs.
(3) dyes with compatibility of dyes selection of positive and negative impact on the larger color ribbon. The production of different formula the same color, the color ribbon of positive and negative difference. General choice of sublimation fastness and type (S, SE, E type) of the same or similar disperse dyes for compatibility, better dyeing effect. In addition, the use of auxiliary antimigrant, penetrant and leveling agent, dyeing of color
