[go: up one dir, main page]

WO2025164245A1 - Tête de filière - Google Patents

Tête de filière

Info

Publication number
WO2025164245A1
WO2025164245A1 PCT/JP2025/000434 JP2025000434W WO2025164245A1 WO 2025164245 A1 WO2025164245 A1 WO 2025164245A1 JP 2025000434 W JP2025000434 W JP 2025000434W WO 2025164245 A1 WO2025164245 A1 WO 2025164245A1
Authority
WO
WIPO (PCT)
Prior art keywords
block
shim
air vent
manifold
die head
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/JP2025/000434
Other languages
English (en)
Japanese (ja)
Inventor
金井　正二
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Intellectual Property Management Co Ltd
Original Assignee
Panasonic Intellectual Property Management Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Panasonic Intellectual Property Management Co Ltd filed Critical Panasonic Intellectual Property Management Co Ltd
Publication of WO2025164245A1 publication Critical patent/WO2025164245A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work

Definitions

  • This disclosure relates to a die head.
  • Patent Document 1 discloses "a die for discharging a coating liquid from its front end onto a web being transported in the vertical direction, the die having: a first body having a flat lower surface; a second body arranged opposite the lower surface of the first body; a sheet-like shim sandwiched between the first body and the second body; a liquid reservoir provided on the upper surface of the second body; a discharge passage formed by the shim between the upper surface of the second body and the lower surface of the first body; a slit-shaped discharge opening provided at the front end of the discharge passage; and a pair of left and right air vent holes on both sides of the second body that penetrate the liquid reservoir.”
  • the die head comprises a first block having a manifold to which a coating liquid is supplied, a second block, and a shim disposed between the first and second blocks and forming a flow path corresponding to the manifold.
  • An air vent groove that connects the manifold to the outside is formed on at least one of the surface of the first block facing the shim and the surface of the shim facing the first block.
  • air can be sufficiently removed from within the manifold.
  • FIG. 1 is a perspective view schematically illustrating an example of a die head according to the present disclosure.
  • FIG. 1 is an exploded perspective view schematically showing a die head, in which the upper block is oriented so that its internal structure can be seen.
  • FIG. 4 is a plan view schematically showing a lower block and a second shim.
  • Embodiments of the die head according to the present disclosure are described below using examples. However, the present disclosure is not limited to the examples described below. While specific numerical values and materials may be used in the following description, other numerical values and materials may also be used as long as the effects of the present disclosure are achieved.
  • the die head according to the present disclosure is a device for applying a coating liquid (e.g., electrode mixture slurry) to a strip-shaped substrate (e.g., a battery current collector or metal foil), and is generally referred to as a die coater.
  • a coating liquid e.g., electrode mixture slurry
  • the die head according to the present disclosure can also be referred to as a die head for electrode mixture slurry.
  • the die head according to the present disclosure comprises a first block, a second block, and a shim.
  • the die head may be a horizontal die head or a vertical die head.
  • the die head may also be a single-layer die head or a multi-layer die head.
  • the first block has a manifold to which the coating liquid is supplied.
  • the coating liquid may be supplied to the manifold intermittently or continuously. In the former case, the coating liquid can be applied intermittently to the substrate, and in the latter case, the coating liquid can be applied continuously to the substrate.
  • the first block may have a flat surface facing the second block.
  • the manifold may be formed on the flat surface.
  • the first block may be formed in a generally rectangular prism shape.
  • the first block may have a discharge lip for discharging the coating liquid.
  • the first block may be the lower block of a horizontal die head.
  • the first block may be made of a metal material such as stainless steel.
  • the manifold refers to a groove-shaped space extending in the width direction of the die head (the direction in which the discharge lip extends).
  • the second block may have a flat surface that faces the flat surface of the first block.
  • the second block may be a middle block in a horizontal multi-layer die head, or an upper block in a horizontal single-layer die head. In the former case, the second block may be formed in a roughly triangular prism shape, and in the latter case, the second block may be formed in a roughly quadrangular prism shape.
  • the second block may be made of a metal material such as stainless steel. The material of the second block may be the same as or different from the material of the first block.
  • the shim is disposed between the first block and the second block.
  • the shim forms a flow path corresponding to the manifold.
  • the shim may have at least one hollow portion for forming the flow path.
  • the shim may be made of a metal material such as stainless steel. The material of the shim may be the same as or different from the material of each block.
  • a characteristic feature of the die head according to the present disclosure is that an air vent groove, which connects the manifold to the outside, is formed on at least one of the surface of the first block facing the shim and the surface of the shim facing the first block. Air within the manifold can be discharged to the outside of the die head via this air vent groove. Furthermore, because the air vent groove is formed in the first block and/or the shim, there is no need to provide a separate component for this air vent function. Furthermore, air can be vented from the manifold via the air vent groove simultaneously with the application of the coating liquid by the die head, eliminating the need to spend time on air venting separately from the application of the coating liquid. The outside may be the space surrounding the die head.
  • the air vent groove may have a flow path cross-sectional area that allows air to pass through but not the coating liquid.
  • the flow path cross-sectional shape of the air vent groove is not particularly limited and may be, for example, rectangular, triangular, or semicircular.
  • the maximum depth of the air vent groove may be smaller or larger than the maximum width of the air vent groove.
  • the air vent groove may connect the space on the flow path side of the manifold (or the discharge port side of the die head) to the outside.
  • air vent groove so that the space on the flow path side of the manifold connects to the outside, the air vent function of the air vent groove can be further improved.
  • the space on the flow path side of the manifold refers to half of the space on the flow path side when the manifold is divided into two equal parts: the flow path side and the opposite side.
  • the flow path cross-sectional area of the air release groove may be 1000 ⁇ m or more and 3000 ⁇ m or less. By setting the flow path cross-sectional area of the air release groove within this range, it is possible to achieve at a high level both the smooth release of air within the manifold via the air release groove and the prevention of the coating liquid within the manifold from flowing through the air release groove.
  • the flow path cross-sectional area of the air release groove may be 1500 ⁇ m or more and 2500 ⁇ m or less, or may be 1800 ⁇ m or more and 2300 ⁇ m or less.
  • the maximum depth of the air release groove may be, for example, 20 ⁇ m or more and 40 ⁇ m or less.
  • the maximum width of the air release groove may be, for example, 60 ⁇ m or more and 90 ⁇ m or less.
  • the air vent groove may extend from the manifold to the outlet of the flow path.
  • air inside the manifold can flow through the air vent groove in accordance with the flow of the coating liquid in the flow path. This allows air to be vented more smoothly via the air vent groove.
  • the coating liquid inside the manifold flows out through the air vent groove, the coating liquid will flow out from the outlet of the flow path or its vicinity, so the flowing coating liquid will only adhere to the substrate and the area around the die head or peripheral equipment will hardly be soiled by the coating liquid.
  • the outlet of the flow path can also be referred to as the discharge port of the die head.
  • the air vent groove may extend from the manifold to a location other than the outlet of the flow path, as long as it connects the manifold to the outside.
  • the air vent groove may extend in the direction of flow of the coating liquid in the flow path. In this case, the air inside the manifold can flow more smoothly through the air vent groove in accordance with the flow of the coating liquid in the flow path. This allows air to be vented even more smoothly via the air vent groove.
  • the air vent groove may extend linearly in the flow direction, or may extend in a curved or serpentine manner along the flow direction.
  • the air vent groove may be formed only in the shim.
  • the shim is a smaller part than the first block. Therefore, it is easier to form an air vent groove in a shim than in the first block.
  • the dimensions of the air vent groove may be changed as appropriate depending on the application of the die head. Even in such cases, the die head can be adapted to its application simply by replacing it with a shim having a different type of air vent groove. This is easier than replacing the first block.
  • the air vent groove may be formed only in the first block, or in both the first block and the shim.
  • the shim may form multiple flow paths extending parallel to one another.
  • the air vent groove may be formed at least between a pair of adjacent flow paths.
  • the multiple flow paths may be arranged side by side in the width direction of the die head.
  • the length L1 of each flow path and the length L2 of the air vent groove may satisfy the condition 0.8 ⁇ L1/L2 ⁇ 1.2.
  • the air vent groove can be connected to the manifold just enough to perform its air vent function to the fullest extent possible.
  • the length of a flow path refers to the length of the hollow portion provided in the shim to form that flow path in the direction of the coating liquid flow.
  • the length of the air vent groove refers to the length of the air vent groove in the direction parallel to the direction of the coating liquid flow.
  • the die head 10 of this embodiment is configured as a horizontal multi-layer die head, but is not limited to this.
  • the die head 10 includes an upper block 20, a lower block 30, a middle block 40, a first shim 51, and a second shim 52.
  • the upper block 20 is disposed on one side (the upper side in FIGS. 1 and 2) in the vertical direction (the Z direction in each figure).
  • the upper block 20 is formed in a generally rectangular prism shape extending in a first horizontal direction (the X direction in each figure).
  • the upper block 20 has a first flat surface 22 for forming a slit-shaped first flow path (not shown).
  • the upper block 20 has a discharge lip 21 for discharging the coating liquid (not shown) in a second horizontal direction (the Y direction in each figure).
  • the upper block 20 has a first manifold 23 to which the coating liquid is supplied. In this embodiment, the coating liquid is continuously supplied to the first manifold 23 from a supply means (not shown) via a supply path (not shown), but this is not limited to this.
  • the upper block 20 is made of a metal material.
  • the upper block 20 is an example of a third block.
  • the lower block 30 is disposed on the other vertical side (the lower side in Figures 1 and 2).
  • the lower block 30 is formed in a generally rectangular prism shape extending in the first horizontal direction.
  • the lower block 30 has a second flat surface 32 for forming a slit-shaped second flow path (not shown).
  • the lower block 30 has a discharge lip 31 for discharging the coating liquid in the second horizontal direction.
  • the lower block 30 has a second manifold 33 to which the coating liquid is supplied. In this embodiment, the coating liquid is intermittently supplied to the second manifold 33 from a supply means (not shown) via a supply path (not shown), but this is not limited to this.
  • the type of coating liquid supplied to the second manifold 33 may be the same as or different from the type of coating liquid supplied to the first manifold 23 of the upper block 20.
  • the lower block 30 is made of a metal material.
  • the lower block 30 is an example of a first block.
  • the second manifold 33 is an example of a manifold.
  • the middle block 40 is disposed between the upper block 20 and the lower block 30.
  • the middle block 40 is formed in a generally triangular prism shape extending in the first horizontal direction.
  • the middle block 40 has a third flat surface 41 that faces the first flat surface 22 of the upper block 20, and a fourth flat surface 42 that faces the second flat surface 32 of the lower block 30.
  • the middle block 40 is made of a metal material.
  • the middle block 40 is an example of a second block.
  • the first shim 51 is disposed between the upper block 20 and the middle block 40.
  • the first shim 51 is formed in the shape of a thin plate.
  • the first shim 51 is connected to the first manifold 23 of the upper block 20 and has at least one (four in this example) first hollow portion 51a that forms a first flow path through which the coating liquid supplied to the first manifold 23 flows.
  • the first shim 51 is made of a metal material.
  • the second shim 52 is disposed between the lower block 30 and the middle block 40.
  • the second shim 52 is formed in the shape of a thin plate.
  • the second shim 52 is connected to the second manifold 33 of the lower block 30 and has at least one (four in this example) second hollow portion 52a that forms a second flow path through which the coating liquid supplied to the second manifold 33 flows.
  • the second hollow portions 52a extend parallel to one another, and thus the second shim 52 forms multiple second flow paths that extend parallel to one another.
  • the second hollow portion 52a is disposed at a position that overlaps with the first hollow portion 51a of the first shim 51 in the vertical direction.
  • the second shim 52 is an example of a shim.
  • the second flow path is an example of a flow path.
  • a plurality of air vent grooves 52b are formed on the surface of the second shim 52 facing the lower block 30 (in this example, the lower surface) to communicate the second manifold 33 of the lower block 30 with the outside (see FIG. 3).
  • the plurality of air vent grooves 52b are formed only on the second shim 52, but this is not limited thereto.
  • the plurality of air vent grooves 52b are arranged side by side in the first horizontal direction.
  • the air vent grooves 52b are formed at least between a pair of second hollow portions 52a (or second flow paths) adjacent to each other in the first horizontal direction. Between the second hollow portions 52a adjacent to each other in the first horizontal direction, the plurality of air vent grooves 52b extend linearly and parallel to each other.
  • Each air vent groove 52b extends linearly along the second horizontal direction, i.e., along the flow direction of the coating liquid in the second flow path.
  • the flow path cross-sectional area of each air vent groove 52b is 1000 ⁇ m 2 or more and 3000 ⁇ m 2 or less.
  • the plurality of air vent grooves 52b extend from the second manifold 33 to the outlet of the second flow path (or to the tip of the discharge lip 31 of the lower block 30).
  • the length L1 of each second flow path and the length L2 of the air vent groove 52b satisfy the relationship 0.8 ⁇ L1/L2 ⁇ 1.2. Note that, although the plurality of air vent grooves 52b are shown by solid lines in Figure 3, the air vent grooves 52b are formed on the lower surface of the second shim 52 (the surface on the back side of the page in Figure 3).
  • This disclosure can be used for die heads.

Landscapes

  • Coating Apparatus (AREA)

Abstract

L'invention concerne une tête de filière (10) comprenant : un premier bloc (30) ayant un collecteur (33) auquel un liquide de revêtement est fourni ; un second bloc (40) ; et une cale (52) disposée entre le premier bloc (30) et le second bloc (40) et formant un trajet d'écoulement correspondant au collecteur (33). Une rainure d'évent d'air (52b) qui relie le collecteur (33) avec l'extérieur est formée sur la surface du premier bloc (30) faisant face à la cale (52) et/ou la surface de la cale (52) faisant face au premier bloc (30).
PCT/JP2025/000434 2024-01-29 2025-01-09 Tête de filière Pending WO2025164245A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2024011095 2024-01-29
JP2024-011095 2024-01-29

Publications (1)

Publication Number Publication Date
WO2025164245A1 true WO2025164245A1 (fr) 2025-08-07

Family

ID=96590600

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2025/000434 Pending WO2025164245A1 (fr) 2024-01-29 2025-01-09 Tête de filière

Country Status (1)

Country Link
WO (1) WO2025164245A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009226286A (ja) * 2008-03-21 2009-10-08 Toppan Printing Co Ltd 塗布装置
WO2018182408A1 (fr) * 2017-03-29 2018-10-04 Nederlandse Organisatie Voor Toegepast-Natuurwetenschappelijk Onderzoek Tno Appareil et procédé de revêtement par filière plate
JP6781967B1 (ja) * 2020-05-25 2020-11-11 株式会社タンガロイ ダイヘッド
WO2023157609A1 (fr) * 2022-02-15 2023-08-24 株式会社ヒラノテクシード Matrice

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009226286A (ja) * 2008-03-21 2009-10-08 Toppan Printing Co Ltd 塗布装置
WO2018182408A1 (fr) * 2017-03-29 2018-10-04 Nederlandse Organisatie Voor Toegepast-Natuurwetenschappelijk Onderzoek Tno Appareil et procédé de revêtement par filière plate
JP6781967B1 (ja) * 2020-05-25 2020-11-11 株式会社タンガロイ ダイヘッド
WO2023157609A1 (fr) * 2022-02-15 2023-08-24 株式会社ヒラノテクシード Matrice

Similar Documents

Publication Publication Date Title
JP6781967B1 (ja) ダイヘッド
JP7116936B1 (ja) ダイヘッド
CN110198792A (zh) 涂敷模具、涂敷装置、涂敷方法以及二次电池的制造方法
JP2008142648A (ja) スリットノズル
WO2025164245A1 (fr) Tête de filière
JP2024512998A (ja) スロットダイコーター及びそれを含む多レーン二重コーティング装置
JPH08103711A (ja) ダイコータ
JPS6097068A (ja) 移動するウェブ材の被覆用の塗布装置
JP2007125503A (ja) ダイ塗工装置
JP2017225930A (ja) 塗布器及び塗布装置
JP2016078012A (ja) 塗布器
JP4606157B2 (ja) ダイヘッド
JP4559584B2 (ja) ダイヘッド
JP2001009342A (ja) ダイヘッド
JP7331300B2 (ja) ダイ
JP2002137361A (ja) 平坦な被印刷体のための平滑化装置
JP2019188332A (ja) ダイ塗工装置
US20040257415A1 (en) Ink-jet head
JP7786635B1 (ja) 塗工装置
TW527222B (en) Coating agent supplying nozzle
JP4673261B2 (ja) 塗工装置
JP5568750B2 (ja) ノズル及び塗布膜形成方法
JP7028749B2 (ja) 多層塗工装置
JP2021184981A (ja) ダイヘッド
JPH07195016A (ja) 多層ダイコータ

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 25748427

Country of ref document: EP

Kind code of ref document: A1