CN104120571B - A fabric flame retardant coating coating process - Google Patents

Abstract

The invention discloses a coating process of a fabric flame-retardant coating, wherein the upper surface and the lower surface of a fabric are coated with the flame-retardant coating alternatively or simultaneously, primer coating, middle glue coating and surface glue coating are sequentially carried out on a coating device, the total amount of the middle glue is divided into two times of coating, and during the coating, the middle glue accounting for 2/3 dry glue is added during the first coating, and the middle glue accounting for 1/3 dry glue is added during the second coating. According to the invention, the total amount of the intermediate adhesive is coated twice, so that the adhesive amount of the adhesive tape in the fabric can be effectively increased, the problem of the upper limit of the flame-retardant waterproof performance is effectively solved, and the flame-retardant waterproof performance can be upgraded.

Description

A fabric flame retardant coating coating process

technical field

The invention belongs to the technical field of textiles, in particular to a fabric flame-retardant coating coating process.

Background technique

Existing fabric flame retardant coating coating equipment generally adopts the device and process of first coating the primer, drying, coating the middle glue, drying, and coating the top glue when coating the flame retardant glue. Generally, the greater the amount of glue used, the better the flame retardancy and water resistance. However, although the existing fabric flame retardant coating coating equipment can also make the fabric have flame retardancy and water resistance, its flame resistance and water resistance have limit values with the increase of the amount of glue used. After reaching the limit value, even if the amount of glue is increased, the flame retardant and waterproof performance will not be improved, and the flame retardant and waterproof performance at this time often cannot meet the standards stipulated in the national standard.

Contents of the invention

The technical problem to be solved by the present invention is to provide a fabric flame retardant coating coating process to ensure the flame retardant and waterproof performance of the flame retardant coating.

In order to solve the above-mentioned technical problems, the present invention adopts the following technical scheme: a fabric flame-retardant coating coating process, one or both of the upper surface and the lower surface of the fabric are coated with a flame-retardant coating, and the fabric is released by the unwinding device and passed through The tensioning device controls the tension and enters the coating coating device for coating coating, and then is cooled by the cooling device and then rewound by the winding device, and the primer coating, intermediate coating and coating are sequentially performed on the coating coating device. Surface glue coating, the fabric includes upper and lower layers of fabric weave, rib yarns are woven between the upper and lower layers of fabric weaves, the rib yarns connect the upper and lower fabric weaves into one, the upper and lower layers of fabric weaves and rib yarns They are all made of high molecular polymer materials, and the total amount of medium glue is divided into two coatings. When coating, add 2/3 of the total amount of dry glue in the first coating, and add 1/3 of the total amount of medium glue in the second coating. 3 The medium glue of the total amount of dry glue.

Preferably, the tensioning device includes three tensioning rollers arranged in the shape of "pin", and the fabric is unwound from the unwinding device and wound down from the top of the first tensioning roller on the upper side and passed through the second tensioning roller on the lower left side. The bottom is wound out from the top of the third tension roller on the lower right side.

Preferably, the third tension roller is provided with a tension sensor to detect the tension of the fabric, and the speed of the first tension roller and the second tension roller is controlled by a frequency converter. Adjust the speed of the first tension roller and the second tension roller.

Preferably, the rib yarn is a yarn whose diameter is thicker than that of the yarns in the upper and lower fabric weaves, and the warp yarns and weft yarns in the upper and lower fabric weaves interweave and weave into the upper fabric weave and the lower fabric weave. .

Preferably, the high molecular polymer material is polyester, nylon, polypropylene, acrylic or glass fiber.

Preferably, the thickness of the scraper used in coating the primer is 6mm.

In order to further improve the flame-retardant and waterproof performance of the fabric, the present invention first divides the total amount of the medium glue into two coatings, and when coating, adds about 2/3 of the total amount of the medium glue during the first coating. , the second time adding about 1/3 of the total amount of dry glue in the middle glue can effectively increase the amount of adhesive tape in the fabric. Secondly, the thickness of the scraper is improved when the primer is coated. The thickness of the commonly used flame-retardant coating scraper is 3mm. In the present invention, the thickness of the flame-retardant scraper is increased to 6mm. The test proves that the thickness of the scraper increases. The increase in the amount of glue applied to the bottom glue is conducive to increasing the amount of glue applied to the subsequent middle glue.

To sum up, through the improvement of the above-mentioned technical scheme, the present invention achieves the purpose of increasing the total amount of glue and top glue in the primer of the flame-retardant coating, effectively solves the problem of the upper limit of the flame-retardant and waterproof performance, and can further improve the flame-retardant and waterproof performance A grade, reaching the flame retardant standard stipulated in the national standard.

Description of drawings

The present invention will be further described below in conjunction with accompanying drawing and specific embodiment:

Fig. 1 is a schematic diagram of the main structure of the present invention;

Fig. 2 is the structural representation of drying device;

Fig. 3 is the distribution structure schematic diagram of heating tube;

Fig. 4 is the structural representation of unwinding device and tensioning device;

Fig. 5 is the structural representation of winding device and cooling device;

Figure 6 is a schematic diagram of the fabric structure.

detailed description

Embodiments of the present invention will be specifically described below with reference to FIG. 1 to FIG. 6 .

A kind of fabric flame retardant coating coating equipment as shown in Figure 1 to Figure 5, comprises the fabric conveying device 1 of conveying fabric, is provided with unwinding device 4 and tensioning device 5 successively on the front side of fabric conveying fabric device, in The rear side of the fabric conveying device is provided with a cooling device 7 and a winding device 8 in sequence, and a coating coating device for flame retardant coating coating is provided on the fabric conveying direction of the fabric conveying device. The fabric conveying device 1 includes several conveying rollers 12 arranged along the fabric conveying direction, and the fabric 11 is conveyed by the conveying rollers 12 .

After the fabric 12 is released from the unwinding device 4, the tension is controlled by the tensioning device 5 and enters the coating coating device for coating coating, and then is cooled by the cooling device 7 and then wound up by the winding device 8.

As shown in Figure 1, a bottom glue coating device, a middle glue coating device and a surface glue coating device are arranged successively in the fabric conveying direction, between the primer coating device and the middle glue coating device and the middle glue A drying device 3 is provided between the coating device and the top glue coating device, and the primer coating device, the middle glue coating device and the top glue coating device are all composed of a coating tank 21 and a scraper 22. The coating unit 2 is composed of the glue supply tank 21 set on the front side of the scraper 22, the lower end of the glue supply tank 21 is provided with a lower glue port, and a glue dispenser for the glue to flow out is left between the lower glue port and the scraper 22. Gap, the bottom glue coating device and the surface glue coating device are equipped with a set of coating coating units 2, and the middle glue coating device is provided with two sets of coating coating units 2 in sequence along the conveying direction. Wherein, the thickness of the scraper 22 is 6mm.

Divide the total amount of medium glue into two coatings. When coating, add about 2/3 of the total amount of dry glue in the first coating, and add about 1/3 of the total amount of dry glue in the second coating. Medium glue, can effectively increase the amount of adhesive tape in the fabric.

The thickness of the commonly used flame-retardant coating scraper is 3mm. In the present invention, the thickness of the flame-retardant scraper is increased to 6mm. The test proves that the amount of slurry penetration increases when the thickness of the scraper is increased, so the amount of glue applied to the primer is increased, which is beneficial to improve the follow-up. Medium glue glue amount.

As shown in Fig. 2 and Fig. 3, described drying device 3 comprises drying box 30, and the inner chamber of described drying box is divided into upper and lower two layers by mesh plate, and wherein lower chamber is heating chamber 31, and upper chamber The chamber is a drying chamber 32, and a heating device is provided in the heating chamber, and the heating device includes a heating chamber 311 arranged on the front and rear sides of the heating chamber. There is a row of heating pipes 312 arranged in front and back, and the heating pipes 312 are connected through connecting pipes 314 . The heating pipes on the front and rear sides communicate with the corresponding heating chamber 311, the fabric conveying device passes through the drying chamber, the front side of the drying chamber is provided with a fabric inlet, and the rear side of the drying chamber is provided with a fabric outlet. The front and rear sides of the drying chamber 32 are provided with grippers 321 corresponding to the fabric inlet and the fabric outlet to hold the fabric to ensure the weft tension of the fabric. The front and rear sides of the heating chamber 31 are provided with blowers 313 to blow air to the heating chamber, and the top of the drying chamber is provided with a fan to blow air to the drying chamber 32 . The top of the drying chamber 32 is provided with a dehumidifier 33, and a temperature sensor is provided in the drying chamber, and the temperature sensor feeds back and controls the heating power of the heating wire.

The heat generated by the heating of the heating chamber 311 passes through the heating tube 312 sequentially to heat the air in the heating chamber 31, and the blower 313 blows air to the heating chamber 31 to make the hot air flow fully and flow to the drying chamber 32, and the fan on the top of the drying chamber 32 is also strengthened. At the same time, the fabric enters through the fabric inlet, passes through the drying chamber 32, and finally exits the fabric outlet, so that the fabric can be fully contacted with the hot air to be dried during the conveying process, and the dehumidification device 33 can dry the fabric. The moisture generated during the drying process is removed, and the heating power of the heating wire is changed through the feedback control of the temperature sensor, so that the temperature in the drying chamber 32 is always kept moderate, which is conducive to improving the drying quality and is also conducive to saving energy.

As shown in Figure 4, the tensioning device 5 includes three tensioning rollers arranged in the shape of "pin". The bottom of the second tension roller 52 is wound out from the top of the third tension roller 53 on the lower right side. The third tension roller 53 is provided with a tension sensor 54 for detecting the tension of the fabric, and the speed of the first tension roller and the second tension roller is controlled by a frequency converter, and the frequency converter receives the tension sensor signal and adjusts the tension according to the tension. The rotational speed of the first tension roller 51 and the second tension roller 52.

The present invention installs a tension sensor 54 and a corresponding frequency conversion controller on the tensioning device 5, so that the speed of the tensioning roller is automatically adjusted according to the comparison between the set tension value and the actual tension value, so that the tension is always kept consistent during the processing To ensure the uniformity and consistency of the product. (The fabric is easy to cause deformation during high temperature processing, and the deformation becomes irreversible after cooling and setting, so it is necessary to ensure that excessive deformation is not allowed during processing).

As shown in FIG. 5 , an embossing device 6 is also provided, and the embossing device includes a driving pressing roller 61 and a passive pressing roller 62 . The embossing device 6 can emboss patterns on the fabric, and embossing is more environmentally friendly than printing. The cooling device 7 includes several cooling rollers 71 arranged in parallel in turn, and the fabric passes around the cooling rollers for cooling.

As shown in Figure 6, the fabric 11 therein comprises two layers of fabric weaves up and down, and rib yarn 113 is woven between the upper fabric fabric 111 and the lower fabric fabric 112. Both the fabric weave and ribs are made of high molecular polymer materials, the ribs are yarns with a diameter larger than the yarns in the upper and lower fabric weaves, and the ribs intersect with the warp and weft yarns in the upper and lower fabric weaves Woven and woven into the top weave and the inside of the under weave. The high molecular polymer material is polyester, nylon, polypropylene, acrylic or glass fiber. Weaving ribs and warp connections between double-layer fabrics ensures that the stress structure of all ribs and warps points is the same, so that the basic fabric has higher strength, so it is suitable for various high-strength applications, especially in Use in fire-resistant and flame-retardant environments.

Claims (6)

1. A flame-retardant coating coating process for fabrics. One or both of the upper and lower surfaces of the fabric are coated with a flame-retardant coating. After the fabric is released from the unwinding device, the tension is controlled by the tensioning device and enters the coating coating device. Coating coating is carried out, and then after being cooled by the cooling device, it is rewound by the winding device, and the primer coating, the middle rubber coating and the top rubber coating are carried out successively on the coating coating device, and it is characterized in that: the The fabric consists of upper and lower layers of fabric weave, and rib yarns are woven between the upper and lower layers of fabric weaves, and the rib yarns connect the upper and lower layers of fabric weaves into one. The upper and lower layers of fabric weaves and rib yarns are made of polymer materials , the total amount of medium glue is divided into two times for coating. When coating, add 2/3 of the total amount of dry glue for the first coating, and add 1/3 of the total amount of dry glue for the second time. glue. 2. A fabric flame-retardant coating coating process according to claim 1, characterized in that: said tensioning device includes three tensioning rollers arranged in the shape of "product", and the fabric is released from the unwinding device Go around from the top of the first tension roller on the upper side, pass through the bottom of the second tension roller on the lower left side, and then wind out from the top of the third tension roller on the lower right side. 3. A fabric flame retardant coating coating process according to claim 2, characterized in that: the third tension roller is provided with a tension sensor for detecting the tension of the fabric, and the first tension roller and the second tension roller The speed of the two tension rollers is controlled by a frequency converter. The frequency converter receives the signal of the tension sensor and adjusts the speed of the first tension roller and the second tension roller according to the tension. 4. A kind of fabric flame retardant coating coating process according to claim 1, is characterized in that: described rib yarn is the yarn that diameter is thicker than the yarn in the upper and lower two-layer fabric organization, and described rib yarn and upper and lower The warp yarns and weft yarns in the two-layer fabric weave are cross-woven and woven into the upper fabric weave and the lower fabric weave. 5 . A fabric flame retardant coating coating process according to claim 4 , characterized in that: the high molecular polymer material is polyester, nylon, polypropylene, acrylic or glass fiber. 6. A fabric flame retardant coating coating process according to claim 1, characterized in that: the thickness of the scraper used when coating the primer is 6 mm.