SU683808A1 - Plant for applying multilayer coatings onto substrate - Google Patents

Description

The invention relates to the production of multilayer coatings on film substrates and is used, in particular, for the deposition and drying of photographic layers in the manufacture of photosensitive materials.

Lime plant for forming multi-layer coatings containing a tape-like loop-like path with irrigation devices and drying devices 1.

However, in such an installation, one can apply the coatings only in a strictly defined order alternately on both sides of the substrate.

The proposed installation is closest to the installation for applying multilayer coatings on a substrate, containing a roller supporting path with loop-shaped sections and polivye devices 12.

However, with this design of the installation, it is necessary to pass the substrate under the irrigation device each time before coating the coating on one of the sides. The need to move the substrate under the irrigation device virtually eliminates the possibility of obtaining high-quality coating due to the vibration of the irrigation device installed on the floor of the building.

The aim of the invention is to increase the yield of products.

The goal is achieved by the fact that in an installation for placing myoh-layer coatings on a substrate containing a roller supporting path with loop-shaped sections and irrigation devices, loop-shaped areas for coating on one and the other side of the substrate are combined into separate blocks connected by linear roller supporting sections located irrigation devices, with loop-shaped areas with irrigation devices alternating with loop-shaped areas without irrigation devices.

The drawing shows the installation diagram.

Claims (2)

The installation includes a roller support path, which contains three blocks 1, 2, 3, connected by straight roller support sections 4 and 5. Loop-shaped sections of these blocks have devices for turning the subfloor inside with a watered side 6 and 7, which can be used vacuum arc roller tables or boxes with cylindrical surfaces to create air bags under the freshly cast side of the substrate. In the loops of the blocks, there are drying devices 8 in the box with perforated panels for supplying air to the poured layers for drying. At the beginning and end of the roller tape path there are a device 9 for unwinding and sticking rolls and a device 10 for winding a film. Irrigation devices 11-13 of block 1 follow from left to right, devices 14 and 15 of block 2 from right to left, and devices 16 and 17 of block 3 placed again from left to right. The substrate from device 9 enters and then passes through block 1. Irrigation devices 11–13 sequentially apply fluid layers onto the substrate moving from left to right. These layers are dried by jets of air supplied perpendicular to the surface of the poured layers from the devices 8. The applied layers are deposited in area 4 and at the beginning of block 2, in the part where the airbags are located in the lower parts of the loop-like areas. Then, using the devices 14 and 15, layers are applied to the thick side of the substrate, moving right to the left. Devices for turning the substrate inside the drunk side after hosatBHbsx. The devices are located in the tops of the loop elements. The applied layers are dried with air supplied from the devices 8, then in section 5, and finally dried at the beginning of block 3. Devices 16 and 17 apply liquid layers again to the first side of the substrate, moving in the same direction as in block 1. After the final drying, the film is wound into a roll by the device 10. The number of loop-shaped sections is not limited; however, the mutual layers may be different. Oral can be placed all one level or placed in two (as shown in the drawing), three or more Russ. The length of each loop-shaped area is determined by the required duration of the drying process and the speed of movement of the substrate, and the number of irrigation devices is selected according to the number of fluid layers applied to each side of the substrate. In particular, if it is necessary to apply on one CTopo (fy sleep substrates (| a single layer, on the other side - four photosensitive layers, and then on the first side again two layers in block 1, you can install only device 11, after which the substrate goes along of the first device 8 to the section 4 and further along the entire loop-like tape path, and in block 2, not two but not only two irrigation devices are installed on the irrigation device or two irrigation devices are applied to the first side of the substrate It is possible to apply before applying layers to the second side, then in block 3 it is possible not to install irrigation devices at all and to use this area only for the final drying of all coatings.The proposed installation can be used to optimally manufacture different coatings. According to the scheme shown in the drawing, it is necessary to apply coatings only with the devices I and 12, then after the device 12, the substrate can be directed to section 4, in-pin the remaining loops of block I. allows to obtain coatings with high uniformity of layer thickness and to reduce the likelihood of forming defects due to the ingress of contaminants into the layers from the environment. Claim 1. An installation for applying multilayer coatings on a substrate comprising a roller supporting path with loop-like sections and irrigation devices, characterized in that, in order to increase the yield of the product, the non-leafy areas for coating on one and the other sides of the substrate are combined into separate The blocks are connected straight lines. “H roller support areas located above the irrigation devices. 2. Installation according to claim 1, characterized in that the loop-shaped areas with irrigation devices alternate with loop-like areas without irrigation devices. Sources of information taken into account in the examination 1. For Japan W 48-44171, cl. B44 D 1/03, publ. 1974. 2. US patent ff 3288632, cl. 117-68, publ. 1966. t2 ft 1 / J