WO2012124305A1 - フィルム巻取用巻芯及びそれを用いたフィルム巻回体 - Google Patents

フィルム巻取用巻芯及びそれを用いたフィルム巻回体 Download PDF

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Publication number
WO2012124305A1
WO2012124305A1 PCT/JP2012/001670 JP2012001670W WO2012124305A1 WO 2012124305 A1 WO2012124305 A1 WO 2012124305A1 JP 2012001670 W JP2012001670 W JP 2012001670W WO 2012124305 A1 WO2012124305 A1 WO 2012124305A1
Authority
WO
WIPO (PCT)
Prior art keywords
film
core
winding core
winding
core body
Prior art date
Application number
PCT/JP2012/001670
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
俊祐 能見
俊一郎 佐柳
Original Assignee
日東電工株式会社
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 日東電工株式会社 filed Critical 日東電工株式会社
Priority to EP12757615.5A priority Critical patent/EP2684828A4/en
Priority to CN2012800128593A priority patent/CN103415456A/zh
Priority to US14/004,366 priority patent/US20140001306A1/en
Priority to KR1020137026370A priority patent/KR20140012711A/ko
Publication of WO2012124305A1 publication Critical patent/WO2012124305A1/ja

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
    • B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
    • B65H75/04—Kinds or types
    • B65H75/08—Kinds or types of circular or polygonal cross-section
    • B65H75/10—Kinds or types of circular or polygonal cross-section without flanges, e.g. cop tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/17—Nature of material
    • B65H2701/175—Plastic
    • B65H2701/1752—Polymer film
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/37—Tapes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/50—Storage means for webs, tapes, or filamentary material
    • B65H2701/51—Cores or reels characterised by the material
    • B65H2701/514—Elastic elements

Definitions

  • the present invention relates to a film winding core and a film winding body using the same.
  • a long film is manufactured by a known method such as extrusion molding, wound around a cylindrical core, and stored and shipped.
  • the film When the film is wound around a cylindrical core and stored, the film may be distorted (deformed), which may hinder the unwinding of the film.
  • Patent Document 1 Such a problem is pointed out in Patent Document 1, for example.
  • Patent Document 1 describes a winding core configured to prevent distortion of a belt-like object due to winding tightening. Specifically, after winding the strip around the core so that the outer periphery of the core and the strip are in close contact, the core is reduced in the radial direction. Moreover, after expanding a core in the radial direction and improving the adhesiveness of the outer peripheral part of a core and a strip
  • Patent Document 1 Since the core described in Patent Document 1 has a relatively complicated mechanism, it is not suitable for a business form in which a film wound around the core is provided to the customer together with the core.
  • the object of the present invention is to provide a simple technique for preventing problems during unwinding of a film.
  • the present invention A core for winding a long film, A core body having a cylindrical shape;
  • the core body is provided at each of a plurality of positions along the circumferential direction of the core body so as to be provided around the core body and to support the film at a position away from the outer peripheral surface of the core body.
  • a plurality of film support portions that individually protrude from the outer peripheral surface and are each made of a material that can be deformed when the film is wound around the core;
  • a winding core for film winding is provided.
  • the present invention provides: The film winding core of the present invention; A film wound on the film winding core of the present invention; A film winding body is provided.
  • the film is distorted based on the following mechanism.
  • the long film depends on its production method, it has a considerable thickness variation (thickness variation).
  • the thick part swells outward compared to the thin part.
  • the tension is concentrated on the thick part, the thick part is stretched in the longitudinal direction.
  • sufficient tension is not applied to the thin part, so that a so-called gapping occurs in some cases.
  • “Wound nest” means a space formed between an inner film and an outer film.
  • a plurality of film support portions are provided around the core body. Since the film support part protrudes from the outer peripheral surface of the core body, the film is supported by the film support part. Therefore, it can avoid that a film adheres to a core main body between two film support parts adjacent to each other in the circumferential direction. Thereby, it is possible to prevent distortion from being stored in the film as much as possible. Furthermore, the film support part is comprised with the material which can deform
  • the core of the present invention As described above, according to the core of the present invention, distortion caused by uneven thickness can be suppressed. Accordingly, it is possible to prevent the film from being bent or slackened during unwinding. As a result, it becomes possible to run the film stably at the time of unwinding, and the occurrence rate of production failure (conveyance error) can be greatly reduced. The yield of products using films and the utilization rate of films are also improved.
  • the perspective view of the core for film winding which concerns on embodiment of this invention 1 is a cross-sectional view taken along line II-II of the core shown in FIG.
  • Cross-sectional view of a wound film body using the core shown in FIG. Schematic showing the preferred protrusion height of the film support
  • Cross-sectional view of a winding core according to a modification Cross-sectional view of a winding core according to another modification
  • the film winding core is simply abbreviated as “core”.
  • the core 10 includes a core body 12, a pair of bearing portions 16, and a plurality of film support portions 14.
  • the film winding body 100 includes a winding core 10 and a long film 18 wound around the winding core 10.
  • the core 10 can be rotated about the rotation axis O.
  • the rotation axis O is an axis that passes through the center of the core body 12.
  • the core body 12 has a cylindrical shape.
  • the core body 12 can be composed of a cylindrical body having both ends open.
  • the shape of the cross section of the core body 12 is not particularly limited, and may be circular or polygonal as in this embodiment.
  • the film 18 is directly supported by the film support portion 14. Furthermore, as will be described later, the influence of the uneven thickness of the film 18 is canceled by the film support portion 14. Therefore, high dimensional accuracy is not required for the core body 12.
  • the material of the core body 12 is not particularly limited.
  • the core body 12 can be made of resin, metal, ceramic, glass, or a combination thereof. It is desirable that the core body 12 is not easily deformed when the film 18 is wound around the core 10.
  • a thermoplastic resin such as polycarbonate, polypropylene, polyethylene, acrylonitrile-butadiene-styrene copolymer, polyester (polyethylene terephthalate, polyethylene naphthalate, etc.), polystyrene, polyvinyl chloride or the like is used in a known manner, for example, an injection molding method.
  • the core body 12 can be obtained.
  • the film support portion 14 is a portion provided around the core body 12, and in the circumferential direction of the core body 12 so that the film 18 can be supported at a position away from the outer peripheral surface 12 p of the core body 12. At each of the plurality of positions along the center, the core body 12 protrudes from the outer peripheral surface 12p of the core body 12 outward in the radial direction. According to the film support part 14, it is possible to avoid the film 18 from being in close contact with the core body 12 between the film support parts 14 adjacent to each other in the circumferential direction. Thereby, distortion can be prevented from being stored in the film 18.
  • the film support 14 is made of a material that can be deformed when the film 18 is wound around the core 10.
  • the film support part 14 is comprised with the material which can be elastically deformed.
  • a sufficient frictional force can be generated between the film support portion 14 and the film 18. Accordingly, when the film 18 is unwound and when the film 18 is wound, the core 10 can be prevented from spinning.
  • the film support part 14 has moderate elasticity or cushioning property, the influence by the uneven thickness of the film 18 can be reduced or offset more effectively.
  • At least one material selected from the group consisting of sponge, rubber, and foam can be used as the material of the film support portion 14. Any of these materials can be obtained at low cost and can be easily processed. Moreover, according to these materials, sufficient frictional force can be exerted between the film 18 and the film support part 14.
  • urethane foam is recommended as a material for the film support portion 14 because it has the above-described characteristics in a well-balanced manner. Examples of the material having appropriate rebound resilience include natural rubber, nitrile rubber, silicone rubber, and foams thereof.
  • polyethylene, EVA (ethylene vinyl acetate copolymer), EPDM (ethylene-propylene-diene rubber), fluororubber, and foams thereof can also be used.
  • the film support portion 14 can be fixed to the core body 12 by a known method such as adhesion or welding.
  • the entire film support portion 14 is made of the above-described material. Only a part of the film support part 14, for example, a part in contact with the film 18 may be made of the material described above.
  • the film support portions 14 are arranged at equal intervals (equal angular intervals) in the circumferential direction of the core body 12.
  • the uniformity of the load applied to the film 18 in the longitudinal direction of the film 18 is improved. This is advantageous for suppressing distortion.
  • a virtual polygon PL having a minimum area surrounding all the film support portions 14 is defined in a cross section perpendicular to the rotation axis O.
  • the position of the film support portion 14, the number of film support portions 14, and the protrusion height h of the film support portion 14 from the outer peripheral surface 12 p of the core body 12 so that the core body 12 is accommodated inside the polygon PL. Can be adjusted. When satisfying such requirements, it can be avoided that the film 18 is strongly pressed against the core body 12.
  • the core 10A shown in FIG. 5A includes film support portions 14 provided at equal intervals in eight locations in the circumferential direction.
  • the film support portion 14 is provided so as to extend from one side surface of the core body 12 toward the other side surface.
  • the longitudinal direction of the film support portion 14 is parallel to the rotation axis O when the winding core 10 is rotated, and is perpendicular to the longitudinal direction of the film 18. According to such a configuration, a uniform supporting force can be exerted on the film 18 in the width direction of the film 18.
  • the film support portion 14 has a semi-cylindrical shape. Thereby, the film 18 can be supported on a moderately wide surface. This is preferable from the viewpoint of preventing local deformation of the film 18.
  • a core 10B shown in FIG. 5B includes a film support 24 having a hollow semi-cylindrical shape.
  • the core 10C shown in FIG. 5C includes a film support portion 34 having a prismatic shape.
  • These film support portions 24 and 34 can also be suitably employed as those having the same effect as the film support portion 14.
  • the film support 24 having a hollow structure can be easily elastically deformed, an effect of alleviating or canceling the influence of uneven thickness of the film 18 can be sufficiently expected.
  • the outer peripheral surface of the film support portion 14 or 24 has a curvature smaller than the curvature of the outer peripheral surface 12p of the core body 12.
  • the bearing portion 16 is attached to both side surfaces of the core body 12 and is a portion into which a shaft (not shown) used when the core 10 is rotated is inserted.
  • the winding core 10 can be smoothly rotated by the bearing portion 16.
  • the bearing portion 16 has the same outer shape as the core body 12. However, the bearing portion 16 may have a diameter larger than the diameter of the core body 12, that is, the bearing portion 16 may extend to the outside of the core body 12.
  • the bearing portion 16 is composed of a disc-shaped flange having a bearing hole 16h.
  • the bearing portion 16 may be integrated with the core body 12 or may be detachable from the core body 12.
  • the bearing portion 16 and the core body 12 can be integrated by a known method such as welding or adhesion.
  • a fitting structure between the core body 12 and the bearing portion 16 can be provided.
  • the bearing portion 16 is detachable, the pair of bearing portions 16 can be used as a common member for many cores 10, so that the cost of the core 10 can be reduced.
  • the bearing portion 16 is not essential, and it is possible to rotate the core 10 by directly inserting the shaft into the core body 12.
  • bearing portion 16 in this specification may not have the function of supporting the shaft, to be precise.
  • bearing portion is used to mean “a portion having a through hole (bearing hole 16h) for installing the core 10 on the shaft”.
  • the core 10 of this embodiment does not have a mechanical movable part, it can be manufactured at low cost.
  • the film winding body 100 has a polygonal shape, typically a regular polygonal shape, as a whole in a cross section perpendicular to the rotation axis O (or in plan view).
  • a gap SH is formed between the outer peripheral surface 12 p of the core body 12 and the film 18.
  • a portion that is not supported by the film support portion 14 is slightly slackened toward the core body 12.
  • the film 18 may be completely separated from the core body 12, or the film 18 may be in contact with the outer peripheral surface 12p to the extent that the effect of suppressing distortion is not significantly lost.
  • the material, structure, and dimensions of the film 18 to be wound around the core 10 are not particularly limited.
  • the core 10 of the present embodiment is used for winding a film having an essentially uneven thickness, a very high distortion suppressing effect can be obtained.
  • a film manufactured using an extrusion apparatus equipped with a T-die has a substantially constant thickness distribution in the width direction, regardless of which part in the longitudinal direction is measured. For example, it is assumed that there is a thickness difference of about 1 ⁇ m between one end and the other end in the width direction. When such a film is wound around a conventional cylindrical winding core 1000 times, a difference in diameter of about 2 mm occurs between one end and the other end of the film winding body.
  • the core 10 of the present embodiment is particularly effective for winding a film that is difficult to remove.
  • a film is flexible and typically has a thickness on the order of micrometers (eg 2-100 ⁇ m).
  • a resin porous membrane As an example of a film manufactured using an extrusion apparatus equipped with a T die, a resin porous membrane can be mentioned.
  • the resin porous membrane include a porous membrane made of polyolefin, fluororesin, polyurethane, polyamide, polyester, polyimide, polyamideimide, epoxy or the like.
  • the polyolefin include polyethylene and polypropylene.
  • the fluororesin include polytetrafluoroethylene.
  • the resin porous film made of polyimide, polyamideimide or epoxy may be a thermosetting film. These porous resin membranes can be widely used in applications such as electrochemical element separators, waterproof breathable membranes, dust collection filters, and low dielectric substrates.
  • the film 18 may have the adhesion layer and does not need to have the adhesion layer.
  • a film that does not have an adhesive layer is more suitable as a target for use of the core 10 of the present embodiment.
  • a film having an adhesive layer generally requires a strong tension to once peel off the adhered film, so even if some distortion remains in the film, it is unlikely to cause a transport error.
  • the film is often unwound and used at a low tension and at a high speed. The higher the unwinding speed, the higher the probability of occurrence of a transport error. Therefore, the use of the core 10 of this embodiment is particularly recommended as the core of a film that does not have an adhesive layer.

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  • Storage Of Web-Like Or Filamentary Materials (AREA)
PCT/JP2012/001670 2011-03-11 2012-03-09 フィルム巻取用巻芯及びそれを用いたフィルム巻回体 WO2012124305A1 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP12757615.5A EP2684828A4 (en) 2011-03-11 2012-03-09 FILM WINDING CORE, AND WOUND FILM BODY USING THE SAME
CN2012800128593A CN103415456A (zh) 2011-03-11 2012-03-09 薄膜卷绕用卷芯及使用该卷芯的薄膜卷绕体
US14/004,366 US20140001306A1 (en) 2011-03-11 2012-03-09 Film winding core, and wound film body using same
KR1020137026370A KR20140012711A (ko) 2011-03-11 2012-03-09 필름 권취용 권취 코어 및 그것을 사용한 필름 권취체

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011-054159 2011-03-11
JP2011054159A JP2012188252A (ja) 2011-03-11 2011-03-11 フィルム巻取用巻芯及びそれを用いたフィルム巻回体

Publications (1)

Publication Number Publication Date
WO2012124305A1 true WO2012124305A1 (ja) 2012-09-20

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ID=46830397

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PCT/JP2012/001670 WO2012124305A1 (ja) 2011-03-11 2012-03-09 フィルム巻取用巻芯及びそれを用いたフィルム巻回体

Country Status (6)

Country Link
US (1) US20140001306A1 (zh)
EP (1) EP2684828A4 (zh)
JP (1) JP2012188252A (zh)
KR (1) KR20140012711A (zh)
CN (1) CN103415456A (zh)
WO (1) WO2012124305A1 (zh)

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JP2012188251A (ja) 2011-03-11 2012-10-04 Nitto Denko Corp フィルム巻取用巻芯及びそれを用いたフィルム巻回体
KR101461846B1 (ko) 2014-03-04 2014-11-13 송해용 필름 권취 장치
GB2528295A (en) * 2014-07-16 2016-01-20 Vestas Wind Sys As Improvements relating to composite manufacturing
CN104876069A (zh) * 2015-04-14 2015-09-02 苏州爱立方服饰有限公司 一种纺织品卷取辊
US10258204B2 (en) * 2015-12-28 2019-04-16 Russell J. Gerhold Paper product center sponge tube and method
CN106477369A (zh) * 2016-11-30 2017-03-08 江门沙龙实业有限公司 一种烫金机的薄膜收卷装置
US11787659B2 (en) 2018-03-23 2023-10-17 Milwaukee Electric Tool Corporation Fish tape assembly
TWI802405B (zh) * 2018-07-18 2023-05-11 日商美克司股份有限公司 帶捲繞體
JP7325706B2 (ja) * 2018-07-18 2023-08-15 マックス株式会社 結束用テープ、結束方法、テープ巻き付け体及びリール
WO2022081333A1 (en) * 2020-10-13 2022-04-21 Milwaukee Electric Tool Corporation Fish tape tool
CN112850370B (zh) * 2020-12-31 2023-09-22 上海恩捷新材料科技有限公司 一种锂电池隔膜收卷装置及工艺

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Also Published As

Publication number Publication date
CN103415456A (zh) 2013-11-27
JP2012188252A (ja) 2012-10-04
US20140001306A1 (en) 2014-01-02
EP2684828A1 (en) 2014-01-15
EP2684828A4 (en) 2014-09-10
KR20140012711A (ko) 2014-02-03

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