WO2022154359A1 - 양면 인식이 가능한 2차전지용 전극의 불량부분 식별용 라벨 및 그 제조방법 - Google Patents
양면 인식이 가능한 2차전지용 전극의 불량부분 식별용 라벨 및 그 제조방법 Download PDFInfo
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- WO2022154359A1 WO2022154359A1 PCT/KR2022/000153 KR2022000153W WO2022154359A1 WO 2022154359 A1 WO2022154359 A1 WO 2022154359A1 KR 2022000153 W KR2022000153 W KR 2022000153W WO 2022154359 A1 WO2022154359 A1 WO 2022154359A1
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Definitions
- the present invention relates to a label for identifying a defective part of an electrode for a secondary battery capable of double-sided recognition and a method for manufacturing the same, and specifically, the sensor can recognize both the front side and the back side of the label for identifying a defective part of the electrode for a secondary battery.
- a label for identifying defective parts of electrodes for secondary batteries capable of double-sided recognition that can easily identify defective parts of electrodes for secondary batteries even if sensors are installed in different places in each manufacturing line, and a manufacturing method therefor will be.
- electrodes for secondary batteries have been manufactured by coating an active material, a conductive material, and a binder on a thin-plate current collector having a thin thickness, and then drying the same.
- a thin plate-type electrode for a secondary battery when an active material is coated on the surface of the current collector, defects occur due to the inclusion of external impurities, or when the active material is not uniformly coated on the surface of the current collector, a defect occurs by itself. There were problems such as Therefore, always after manufacturing the electrode for secondary battery, it is wound on a winding roll once and unwrapped to check and mark whether the entire surface is defective. was removed and only normal electrode parts were used.
- the present applicant maintains the advantages of the label of his prior patent 1 as it is, but improves it a bit, and for the defective part of the electrode for the secondary battery to which this label is attached, the sensor is attached to any part of the production process of the electrode for the secondary battery. Even though there is, I felt the need to develop a new label for identifying defective parts of electrodes for secondary batteries that can easily and accurately identify this label.
- Prior Patent 1 Korean Patent Registration No. 10-1330880 (Registered on November 12, 2013)
- the present invention is a case in which the device configuration of a manufacturing line for producing electrodes for secondary batteries is not uniform and different from each other, so that even if the position of the sensor is located on the back side of the label as well as on the front side of the label, it is possible to easily identify the defective part.
- An object of the present invention is to provide a label for identifying a defective part of an electrode for a secondary battery that can be recognized.
- the present invention allows the user to easily recognize how far the adhesive layer is formed on the label, thereby promoting the user's convenience and uniformly attaching the label to more accurately identify the defective part of the electrode for the secondary battery.
- Another object of the present invention is to provide a label for identifying defective parts of an electrode for a secondary battery capable of recognizing both sides having an adhesive layer display part formed thereon.
- the label for identifying a defective part of an electrode for a secondary battery capable of double-sided recognition includes: a release paper coated with a silicone resin on one side and integrally formed with a silicone resin layer; an adhesive layer having a thickness of 5 to 30 ⁇ m in which an acrylic removable adhesive is applied only to a portion corresponding to 25 to 50% of the total area of the silicone resin layer on one side of the upper surface of the silicone resin layer coated on the release paper; and a first color layer and a first color printing layer that are covered on the upper surface of the adhesive layer and are formed to correspond to the entire area of the release paper, and are coated with a certain color to be identified using a certain sensor.
- the acrylic removable adhesive is an adhesive formed by polymerization of an acrylic monomer, and is an adhesive mainly composed of an acrylic polymer. It is preferable that acrylic acid ester and methacrylic acid ester are used. Acrylic-based removable resin is adopted and used to prevent the adhesive from leaking out when attached to a wide range of surfaces and causing secondary electrode failure.
- the adhesive force value of the pressure-sensitive adhesive required in the present invention is 100 to 800gr/25mm when the product adhered at a 90 degree angle is peeled off from the measuring instrument, and 100 to 1400gr/25mm when the product attached at a 180 degree angle is peeled off. good night.
- the thickness of the adhesive layer is preferably 5 ⁇ 30 ⁇ m, and the adhesive layer must be formed within the above range so that the adhesive leaks out depending on the pressure applied in the winding step after inspection for defective parts on the electrode for secondary batteries. This is because the phenomenon can be prevented.
- the base film is preferably made of any one of polyethylene terephthalate (PET), polypropylene (PP), oriented polypropylene (OPP), and polyimide (PI). This is because the identification of the first color layer and the second color layer is easy on both the front and back surfaces of the label only when a transparent synthetic resin is used as the material. At this time, since the hardness and hardness are different depending on the type of the base film, the thickness can be adjusted within the range of the thickness. Therefore, when using PET or PP having a relatively hard material, it is recommended that the thickness does not exceed 38 ⁇ m, and in the case of OPP or PI, which are soft materials, a film having a thickness of 40 ⁇ m or more may be used.
- PET polyethylene terephthalate
- PP polypropylene
- OPP oriented polypropylene
- PI polyimide
- the thickness of the base film constituting the label according to the present invention is preferably 16-50 ⁇ m, but the thickness varies depending on the material of the base film. This was by adjusting the thickness of the base film so that the label did not remain attached when the thin plate made of the electrode for the secondary battery was wound while the label was attached.
- a silicone cured resin layer formed by coating a silicone resin on the other side of the base film and then curing by ultraviolet rays is further included.
- the thickness of the silicone cured resin layer is preferably 2 ⁇ 5 ⁇ m.
- the silicone cured resin layer is necessary to minimize secondary contamination or influence on the electrode plate for secondary batteries that comes into contact when it is wound after the inspection of defective parts with the label attached.
- the material of the base film is polypropylene or stretched polypropylene
- the silicone cured resin layer is formed, the color recognition rate for defective parts by the infrared sensor may decrease and errors may occur. It is not desirable to form
- the sensor used to identify the defective part of the secondary battery electrode can be used by adopting either a color sensor or an infrared sensor.
- Various colors can be adopted for the two-color layer, and when an infrared sensor is adopted and used, it is preferable to apply and use red, which can be easily identified by an infrared sensor, to both the first color layer and the second color layer. . Therefore, no matter where the sensor is placed in the automatic manufacturing process of the electrode for secondary battery, for the part to which the label according to the present invention is attached, not only the sensor installed on the front side of the label, that is, from the top to the bottom, but also on the back side, that is, from the downward side to the upward direction.
- the defective part of the secondary battery electrode can be easily identified even by the sensor installed toward the side.
- a color sensor that distinguishes and identifies colors according to the colors of the first color layer and the second color layer, as well as an infrared sensor that recognizes only red may be selectively employed and used.
- the thickness of the first color layer, the white color layer and the second color layer included in the base film among the components of the present invention is 2 to 5 ⁇ m, respectively.
- a space between the first color layer and the second color layer is placed between the first color layer and the second color layer in order to accurately identify the color from both the front side and the back side and to prevent different colors from being reflected or mixed.
- a white layer is formed.
- the present invention is further characterized in that, as an additional component, an adhesive layer display part formed in the form of a recess is further included in at least one of the places where the boundary of the portion forming the adhesive layer meets the top and bottom of the label.
- an adhesive layer display unit enables a user to easily peel a label from a release paper, and makes it possible to uniformly form a jagged label according to a user.
- it is for the convenience of the user by making it easy to grasp where the pressure-sensitive adhesive is formed from.
- the adhesive layer display part can be made by forming a groove of a specific shape through punching at the place where the adhesive layer is formed at the top or bottom of the label as a boundary.
- the shape of the groove may be formed to have a semicircular shape or a semi-polygonal shape, such as a semicircular shape, a semi-octagonal shape, and a reflective rectangular shape.
- Another aspect of the present invention is a method for manufacturing a label for identifying defective parts of an electrode for a secondary battery capable of double-sided recognition, comprising the steps of: preparing a base film made of a transparent synthetic resin; a first color layer forming step of coating a first color on the back surface of the prepared base film and drying it to form a first color layer; a white color layer forming step of covering and drying the surface of the first color layer with white color to form a white color layer; a second color layer forming step of covering and drying the surface of the white color layer with a second color to form a second color layer; A pressure-sensitive adhesive layer forming step of forming an adhesive layer by applying an acrylic removable adhesive only to a portion corresponding to 25-50% of the total surface area of the release paper on one side of the surface of the release paper on which the silicone resin layer is formed; and a release paper step of bonding the surface of the release paper on which the adhesive layer is formed and the second color layer of the base film to adhere to each other.
- a silicone cured resin layer forming step of coating a silicone resin on the surface of the base film and curing it by irradiating ultraviolet rays to form a silicone cured resin layer is further included. do it with
- any one of the places where the boundary of the portion forming the adhesive layer meets the top and bottom of the label is further included.
- the present invention is a case in which the device configuration of a manufacturing line for producing electrodes for secondary batteries is not uniform and different from each other. Even if the position of the sensor is located on the front or back side of the label, it is possible to easily identify the defective part of the electrode for secondary batteries. It has the advantage of being able to.
- the present invention additionally forms an adhesive layer display unit, so that the user can easily recognize to what extent the adhesive layer is formed on the label, thereby promoting user convenience and uniformly labeling the label more accurately.
- an adhesive layer display unit so that the user can easily recognize to what extent the adhesive layer is formed on the label, thereby promoting user convenience and uniformly labeling the label more accurately.
- FIG. 1 shows the overall configuration of a label visible from the outside according to the present invention.
- Figure 2 shows a cross-section of the portion A-A' of the label according to the present invention.
- Figure 3 shows the entire manufacturing process of the label according to the present invention.
- release paper 110 silicone resin layer
- base film 310 first color layer
- Figure 1 shows the overall configuration of the label seen from the outside according to the present invention
- Figure 2 shows a cross-section of the portion A-A' of the label according to the present invention.
- a pressure-sensitive adhesive layer 200 is applied to form a layer, a first color layer 310, a white color layer 320, a second color layer covered on the upper surface of the pressure-sensitive adhesive layer 200 and facing the pressure-sensitive adhesive layer (
- the base film 300 in which the 330 is sequentially coated to form a layer is configured.
- the thickness of the first color layer, the white color layer, and the second color layer was formed to be 2 to 3 ⁇ m, respectively, and even with this thickness, the phenomenon of the colors of the first color layer and the second color layer being reflected or mixed with each other was prevented. could have been prevented.
- the base film 300 is made of PET, and when the material of the base film is PET, the surface of the base film 300 is essentially formed by coating the silicone cured resin layer 400 .
- FIG. 1 in order to show that the conductive line pointing to the adhesive layer 200 is located under the base film 300 , the part covered by the base film 300 is indicated by a dotted line to help understanding.
- the adhesive layer 200 is formed to have 25 to 50% of the total area from one side of the release paper 100, which allows the user to easily peel and separate the release paper and attach a label, but once the electrode thin plate This is to make it easy to remove the label attached to it.
- the area of the adhesive layer 200 is formed from one end of the release paper 100 and is 25% or less of the total area of the release paper, the base film easily peels off from the release paper, so that the minimum area of the adhesive layer is reduced. It was limited to 25% of the total area of the release paper.
- the adhesive layer when the area of the adhesive layer exceeds 50% of the total area of the release paper, the adhesive layer is formed on the side that serves as a tag because the side on which the label is attached to the surface of the secondary battery electrode is attached in the form of a tag. This is because if it is, it can damage the electrodes in other parts that are not defective.
- the adhesive layer was formed to have an area corresponding to about 30% of the total area of the release paper.
- the thickness of the adhesive layer was taken into consideration in consideration of the area in which the adhesive layer was formed to be 10 to 20 ⁇ m.
- the adhesive layer display unit 500 having the form of semicircular grooves on both the upper and lower portions of the portion meeting the upper and lower ends of the adhesive layer and the label, respectively, was additionally formed.
- the adhesive layer display unit 500 may be formed on one or more sides of a line that meets the boundary line of the adhesive layer among the top or bottom of the label. It is shown that the adhesive layer display unit 500 is generated.
- silicone resin layer 110 by separately coating the release paper 100
- the thickness of the base film adopted in this embodiment was 38 ⁇ m, in order not to leave any traces before and after the winding and unwinding process of the electrode thin plate, and at the same time to avoid leaving any residue on the back surface of the electrode for secondary batteries.
- a silicone cured resin layer 400 was formed. At this time, the thickness of the silicone cured resin layer 400 was formed to be about 2-3 ⁇ m.
- Figure 3 shows the entire manufacturing process of the label according to the present invention.
- Base film preparation step (S100) is a step of preparing a base film made of a transparent synthetic resin to be used in the present invention.
- a film made of a PET material having a thickness of 38 ⁇ m was adopted and used.
- the first color layer forming step ( S200 ) is a step of forming a first color layer by coating a first color on the back surface of the prepared base film, that is, on the surface of the side to be laminated with the release paper, and drying it. After the first color layer forming step (S200), the first color layer is dried until the pigment coated on the first color layer is completely dried, and then the base film coated with the first color layer is wound up again.
- the white color layer forming step (S300) is a step of forming a white color layer by coating and drying the white pigment on the surface of the first color layer while unwinding the wound base film coated with the first color layer.
- the base film on which the white color layer is formed is wound again to prepare the second color layer forming step, which is the next step.
- the first color layer and the white color layer, which were wound up, are unwound again, and the white color layer is coated with the pigment having the second color on the surface of the white color layer, and dried
- the thicknesses of the first color layer, the white color layer, and the second color layer are all controlled by how much pigment is used in each step and the number of coatings.
- the silicone cured resin layer forming step (S500) is a step of forming a silicone cured resin layer by coating a silicone resin on the surface of the base film and curing it by irradiating ultraviolet rays. Only when a silicone cured resin layer is formed on the surface, it does not damage the electrode for secondary battery, and even if the label of the present invention is sandwiched between the electrode for secondary battery in a thin thin film state while being wound, it does not affect it.
- the adhesive layer forming step (S600) is a step of forming an adhesive layer by applying an acrylic removable adhesive only to a portion corresponding to 25-50% of the total surface area of the release paper on one side of the surface of the release paper on which the silicone resin layer is formed.
- an acrylic removable adhesive only to a portion corresponding to 25-50% of the total surface area of the release paper on one side of the surface of the release paper on which the silicone resin layer is formed.
- the release paper step (S700) of bonding the surface of the release paper on which the adhesive layer is formed and the second color layer of the base film to adhere to each other is performed to manufacture the label according to the present invention.
- the adhesive layer display part forming step (S800) of forming a concave-shaped adhesive layer display part by punching in a certain shape at any one or more of the meeting places is further included.
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Abstract
Description
Claims (12)
- 일측면에 실리콘 수지가 코팅되어 실리콘수지층이 일체적으로 형성되어 있는 이형지;상기 이형지에 코팅되어 있는 상기 실리콘수지층의 윗면 일측에 상기 실리콘수지층의 전체 면적의 25~50%에 해당되는 부분에만 아크릴계 리무버블 점착제가 도포되어 있는 두께가 5~30㎛인 점착층; 및상기 점착층의 윗면에 덮여지며 상기 이형지의 전체 면적에 대응되도록 형성되어 있으며, 일정한 센서를 이용하여 식별이 가능하도록 일정한 색상이 대응되어 코팅되어 있는 제1컬러층과 제1컬러인쇄층을 덮으며 표면에 코팅되어 형성되는 화이트색층과 화이트색층을 덮으며 표면에 코팅되어 형성되는 일정한 센서를 이용하여 식별이 가능하도록 일정한 색상이 대응되어 코팅되어 있는 제2컬러층이 상기 점착층을 향한 일측면에 순차적으로 형성되어 있는 투명한 합성수지로 된 베이스필름;을 포함하는 것을 특징으로 하는 양면 인식이 가능한 2차전지용 전극의 불량부분 식별용 라벨.
- 청구항 1에 있어서,상기 베이스필름의 소재는 폴리에틸렌테레프탈레이트(PET), 폴리프로필렌(PP), 연신폴리프로필렌(OPP), 폴리이미드(PI) 중 어느 하나인 것을 특징으로 하는 양면 인식이 가능한 2차전지용 전극의 불량부분 식별용 라벨.
- 청구항 2에 있어서,상기 베이스필름의 재질이 폴리에틸렌테레프탈레이트인 경우,상기 베이스필름의 타측면에는 실리콘수지가 코팅된 후 자외선에 의해 경화되어 형성되는 실리콘경화수지층이 더 포함되는 것을 특징으로 하는 양면 인식이 가능한 2차전지용 전극의 불량부분 식별용 라벨.
- 청구항 3에 있어서,상기 실리콘경화수지층의 두께는 2~5㎛인 것을 특징으로 하는 양면 인식이 가능한 2차전지용 전극의 불량부분 식별용 라벨.
- 청구항 1에 있어서,상기 베이스필름의 두께는 16~50㎛인 것을 특징으로 하는 양면 인식이 가능한 2차전지용 전극의 불량부분 식별용 라벨.
- 청구항 1에 있어서,상기 센서는 색상센서 또는 적외선센서 중 어느 하나인 것을 특징으로 하는 양면 인식이 가능한 2차전지용 전극의 불량부분 식별용 라벨.
- 청구항 1 내지 6 중 어느 한 항에 있어서,상기 제1컬러층, 화이트색층 및 제2컬러층의 두께는 각각 2~5㎛인 것을 특징으로 하는 양면 인식이 가능한 2차전지용 전극의 불량부분 식별용 라벨.
- 청구항 1 내지 6 중 어느 항 항에 있어서,상기 점착층을 형성하고 있는 부분의 경계가 라벨의 상단과 하단과 만나는 곳 중 어느 하나 이상에 요홈 형태로 형성된 점착층표시부가 더 포함되는 것을 특징으로 하는 양면 인식이 가능한 2차전지용 전극의 불량부분 식별용 라벨.
- 청구항 7에 있어서,상기 점착층을 형성하고 있는 부분의 경계가 라벨의 상단과 하단과 만나는 곳 중 어느 하나 이상에 요홈 형태로 형성된 점착층표시부가 더 포함되는 것을 특징으로 하는 양면 인식이 가능한 2차전지용 전극의 불량부분 식별용 라벨.
- 투명한 합성수지로 된 베이스필름을 준비하는 단계준비된 베이스필름의 이면에 제1컬러를 코팅하여 건조시켜 제1컬러층을 형성시키는 제1컬러층형성단계;제1컬러층의 표면에 화이트색을 덮어서 코팅하여 건조시켜 화이트색층을 형성시키는 화이트색층형성단계;화이트색층의 표면에 제2컬러를 덮어서 코팅하여 건조시켜 제2컬러층을 형성시키는 제2컬러층형성단계;실리콘수지층이 형성되어 있는 이형지의 표면 일측에 이형지의 표면 전체 면적의 25~50%에 해당되는 부분에만 아크릴계 리무버블 점착제를 도포하여 점착층을 형성시키는 점착층형성단계; 및점착층이 형성되어 있는 이형지의 표면과 베이스필름의 제2컬러층이 서로 점착되도록 결합시키는 이형지합지단계;를 포함하는 것을 특징으로 하는 양면 인식이 가능한 2차전지용 전극의 불량부분 식별용 라벨의 제조방법.
- 청구항 10에 있어서,상기 제2컬러층형성단계 이후에는,상기 베이스필름의 표면에 실리콘수지를 코팅한 후 자외선을 조사하여 경화시켜 실리콘경화수지층을 형성하는 실리콘경화수지층형성단계가 더 포함되는 것을 특징으로 하는 양면 인식이 가능한 2차전지용 전극의 불량부분 식별용 라벨의 제조방법.
- 청구항 10 또는 11에 있어서,상기 이형지합지단계 이후에는,상기 점착층을 형성하고 있는 부분의 경계가 라벨의 상단과 하단과 만나는 곳 중 어느 하나 이상에 일정한 형태로 펀칭하여 요홈 형태의 점착층표시부를 형성시키는 점착층표시부형성단계가 더 포함되는 것을 특징으로 하는 양면 인식이 가능한 2차전지용 전극의 불량부분 식별용 라벨.
Priority Applications (3)
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EP22739557.1A EP4276803A1 (en) | 2021-01-14 | 2022-01-05 | Both side-recognizable label for identifying defective portion of electrode for secondary battery and manufacturing method therefor |
US18/271,855 US20240071260A1 (en) | 2021-01-14 | 2022-01-05 | Both side-recognizable label for identifying defective portion of electrode for secondary battery and manufacturing method therefor |
CN202280010226.2A CN116868259A (zh) | 2021-01-14 | 2022-01-05 | 可双面识别的二次电池用电极的缺陷部分识别用标签及其制造方法 |
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KR10-2021-0005018 | 2021-01-14 | ||
KR1020210005018A KR102413265B1 (ko) | 2021-01-14 | 2021-01-14 | 양면 인식이 가능한 2차전지용 전극의 불량부분 식별용 라벨 및 그 제조방법 |
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WO2022154359A1 true WO2022154359A1 (ko) | 2022-07-21 |
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PCT/KR2022/000153 WO2022154359A1 (ko) | 2021-01-14 | 2022-01-05 | 양면 인식이 가능한 2차전지용 전극의 불량부분 식별용 라벨 및 그 제조방법 |
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US (1) | US20240071260A1 (ko) |
EP (1) | EP4276803A1 (ko) |
KR (1) | KR102413265B1 (ko) |
CN (1) | CN116868259A (ko) |
WO (1) | WO2022154359A1 (ko) |
Cited By (1)
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CN115842098A (zh) * | 2022-08-05 | 2023-03-24 | 宁德时代新能源科技股份有限公司 | 极片、电池单体、电池和用电装置及极片制造装置 |
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JP6431902B2 (ja) * | 2013-09-20 | 2018-11-28 | ヒュック・フォーリエン・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング | セキュリティエレメント、特に、セキュリティラベル |
KR20180131896A (ko) * | 2017-06-01 | 2018-12-11 | 주식회사 엘지화학 | 다층 마킹 필름 |
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KR102100636B1 (ko) * | 2019-07-10 | 2020-04-21 | 주식회사 무궁화엘앤비 | 보안 요소가 구비된 보이드 라벨 및 그 제조 방법 |
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CN115842098A (zh) * | 2022-08-05 | 2023-03-24 | 宁德时代新能源科技股份有限公司 | 极片、电池单体、电池和用电装置及极片制造装置 |
CN115842098B (zh) * | 2022-08-05 | 2024-01-09 | 宁德时代新能源科技股份有限公司 | 极片、电池单体、电池和用电装置及极片制造装置 |
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