摘要:
In a coating apparatus, a nozzle connects a feed pipe for feeding a coat solution to a manifold of a die with an opening of the manifold. The nozzle satisfies conditions: 1.5≦B/A≦5.0 and 0.8≦C/B≦8.0, when A is an equivalent diameter of an end of the nozzle to be connected with the tube, B is an equivalent diameter of another end of the nozzle to be connected with the opening, and C is a length of the nozzle. The coat solution fed from the feed pipe enters in the nozzle. In the nozzle, the coating solution diverges along with an inner wall of the nozzle to enter into the manifold. In the manifold the coating solution flows in a widthwise direction and flows out through a slit extending from the manifold to a lip of the die, such that a moving web is coated with the coating solution uniformly.
摘要翻译:在涂布装置中,喷嘴将用于将涂布液供给到具有歧管开口的模具的歧管的进料管连接。 喷嘴满足条件:1.5 <= B / A <= 5.0和0.8 <= C / B <= 8.0,当A为与管连接的喷嘴的端部的等效直径时,B为等效直径 喷嘴的另一端与开口连接,C是喷嘴的长度。 从进料管供给的涂层溶液进入喷嘴。 在喷嘴中,涂层溶液与喷嘴的内壁一起分散进入歧管。 在歧管中,涂布溶液在宽度方向上流动,并且通过从歧管延伸到模具的唇缘的狭缝流出,使得均匀地涂覆有移动的网。
摘要:
The curtain coating apparatus of the invention comprises a sliding face on which a coating solution flows down, a coating width regulating plate which is located on each of both sides of the sliding face and regulates the width of the flow of the coating solution, and an edge guide which is connected to the width regulating plate, and keeps both side edges of free falling stream of the coating solution from the sliding face, wherein a contact angle of water with the coating width regulating plate is greater than a contact angle of water with the edge guide, and the apparatus has solved problems of streaks and uneven thickness at side end portions of a free falling film caused by contraction and teapot phenomenon (residence), by changing wett properties at a coating width regulating plate and an edge guide.
摘要:
Before the start of coating, a deflector receives a curtain of a coating liquid free-falling from a coating hopper in order to prevent a continuously-running web from being coated with the coating liquid. At the start of the coating, the deflector is moved relatively to the coating hopper, so that the coating liquid can start to be applied to the web. A receding part is formed at the end of the deflector.
摘要:
A curtain coating apparatus includes a hopper with a slide plane on which the coating solution flows and a hopper lip from where the coating solution begins to freely fall down as a free falling curtain. The apparatus also includes at least a pair of outlets disposed in a position along the edge part of the free falling curtain and situated at a fixed distance down from the hopper lip. Auxiliary solutions are introduced from the width directions so as to maintain the curtain in the width direction.
摘要:
The coating apparatus has an air shielding device to prevent a curtain of coating liquids, which free-falls from a coating head, from being disturbed by an air carried along by a traveling web. The coating apparatus also has a device to move the air shielding device. Before and at the start of coating, the air shielding device is kept far from an impingement position where the free-falling curtain impinges onto the web. Just after the start of coating, the air shielding device is moved close to the impingement position. This prevents the air shielding device from being contaminated with splashes of the coating liquids, and the like.
摘要:
In a simultaneous coating of multiple layers on a web using a slide hopper type coating apparatus, the gelatin concentration of the coating liquid for the bottom layer is set to be lower than the gelatin concentration of the coating liquid for the middle layer by at least 2 points in percentage, the ratio A/B, which is the flow amount ratio of the coating liquid for the bottom layer with respect to the entire multi-layered coating liquid, is set to be between 0.05 and 0.2, and the ratio C/D, which is the viscosity ratio between the coating liquid for the bottom layer and the coating liquid of the middle layer, is set to be between 0.2 and 0.67. Thereby, the flow of the multi-layered coating liquid flowing down on the slide surface can be stabilized.
摘要翻译:在使用滑动式料斗式涂布装置的幅材上同时涂布多层的情况下,将底层涂布液的明胶浓度设定为低于中层涂布液的明胶浓度至少2 以百分比表示,作为底层涂布液相对于整个多层涂布液的流量比的比率A / B设定为0.05〜0.2,比率C / D 是底层涂布液和中间层涂布液之间的粘度比,设定在0.2〜0.67之间。 由此,可以稳定在滑动面上向下流动的多层涂布液的流动。
摘要:
A die of a coating apparatus for applying a coating solution includes down- and upstream blocks in a feeding direction of a web, which respectively have a first lip and a second lip. A lip land of the first lip is shorter than a lip land of the second lip in the feeding direction so as to satisfy a predetermined condition. In assembling the coating apparatus, bottoms of down- and upstream blocks are fixed to a fixer with bolts. Between the fixer and the downstream block, a plate member is provided such that the first lip land protrudes from the second lip land.
摘要:
The mounting is formed by grinding an integrally molded material with accuracy of the μm order. An upper portion of the mounting is an L-shaped holding portion on which a slot die is positioned. An upper face of the holding portion contacts a lower face of the slot die, and a side face of the holding portion contacts a rear face of the slot die. The lower and rear faces of the slot die and the upper and side faces of the holding portion are formed to have such a straightness for the total length that the unevenness thereof may be in 5 μm. Thus the slot die can be held with high accuracy, and the clearance accuracy between the lips and a web can be increased.
摘要:
A die of a coating apparatus for applying a coating solution includes down- and upstream blocks in a feeding direction of a web, which respectively have a first lip and a second lip. A lip land of the first lip is shorter than a lip land of the second lip in the feeding direction so as to satisfy a predetermined condition. In assembling the coating apparatus, bottoms of down- and upstream blocks are fixed to a fixer with bolts. Between the fixer and the downstream block, a plate member is provided such that the first lip land protrudes from the second lip land.
摘要:
The mounting is formed by grinding an integrally molded material with accuracy of the μm order. An upper portion of the mounting is an L-shaped holding portion on which a slot die is positioned. An upper face of the holding portion contacts a lower facer of the slot die, and a side face of the holding portion contacts a rear face of the slot die. The lower and rear races of the slot die and the upper and side faces of the holding portion are formed to have such a straightness for the total length that the unevenness thereof may be in 5 μm. Thus the slot die can be held with high accuracy, and the clearance accuracy between the lips and a web can be increased.