US20240074547A1 - Fastener tape - Google Patents

Fastener tape Download PDF

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Publication number
US20240074547A1
US20240074547A1 US18/272,781 US202118272781A US2024074547A1 US 20240074547 A1 US20240074547 A1 US 20240074547A1 US 202118272781 A US202118272781 A US 202118272781A US 2024074547 A1 US2024074547 A1 US 2024074547A1
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United States
Prior art keywords
fastener tape
reinforcing portion
tape body
reinforcing
thickness
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Pending
Application number
US18/272,781
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English (en)
Inventor
Shintaro Ohsugi
Toshiyuki Asami
Miki Fukuhara
Hideki Okubo
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YKK Corp
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YKK Corp
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Filing date
Publication date
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Assigned to YKK CORPORATION reassignment YKK CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: OKUBO, HIDEKI, FUKUHARA, MIKI, OHSUGI, SHINTARO, ASAMI, TOSHIYUKI
Publication of US20240074547A1 publication Critical patent/US20240074547A1/en
Pending legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
    • A44B19/00—Slide fasteners
    • A44B19/24—Details
    • A44B19/34—Stringer tapes; Flaps secured to stringers for covering the interlocking members

Definitions

  • the present invention relates to fastener tapes for attaching separable insertion mechanism.
  • the present invention relates to a fastener tape provided with a reinforcing portion on at least one main surface.
  • a reinforcing tape made of a synthetic resin film, a woven fabric, or the like is adhered and integrated to the ends of the fastener tape.
  • This reinforcing tape is adhered to the fastener tape with an adhesive, and generally, an intermediate layer (anchor coating agent) is provided between the film on the fastener surface and the adhesive to improve adhesion.
  • Patent Literature 1 Japanese Patent No. 3650733
  • a reinforcing tape for a slide fastener consisting of a polyamide elastomer film having a flexural modulus of 6,000 to 9,000 kg/cm 2 and an adhesive layer.
  • an intermediate layer is interposed between the polyamide elastomer film and the adhesive layer wherein the intermediate layer is thinner than the thickness of each of these layers.
  • a polyester anchor coating agent is preferable for the intermediate layer.
  • Patent Literature 1 has the following problems:
  • one object of the present invention is to provide a fastener tape that satisfies a predetermined standard of peeling resistance between a reinforcing portion and a fastener tape body without using an anchor coating agent and in a simple manner.
  • FIG. 1 is a partial plan view showing the lower portion of the slide fastener employing the fastener tape of one embodiment of the present invention
  • FIG. 2 is a partial plan view showing the lower portion of the slide fastener of FIG. 1 in a separated state
  • FIG. 3 is a cross-sectional view of the slide fastener of FIG. 1 taken along the line A-A′;
  • FIG. 1 and FIG. 2 are partial plan views showing the lower portion of a slide fastener 30 employing fastener tapes 10 a and 10 b according to an embodiment of the present invention.
  • the slide fastener 30 in one embodiment of the present invention comprises: a pair of long fastener tapes 10 a and 10 b having a longitudinal direction and a width direction; coupling tooth rows 32 a , 32 b , which are coil elements, for example, attached to one edge in the width direction of each fastener tape 10 a , 10 b ; a slider 33 ; and an insert pin 37 , a box pin 35 , and a box body 36 , which constitute a separable insertion mechanism.
  • the pair of fastener tapes 10 a and 10 b comprise: a pair of long fastener tape bodies 11 a and 11 b each having a longitudinal direction and a width direction; and a pair of reinforcing portions 12 a , 12 b welded to one longitudinal end of the fastener tape bodies 11 a , 11 b .
  • the separable insertion mechanism is mounted on the reinforcing portions 12 a , 12 b , at one edge in the width direction of the fastener tapes 10 a and 10 b where the coupling tooth rows 32 a and 32 b are provided.
  • an insert pin 37 is provided in the reinforcing portion 12 a
  • a box pin 35 and a box body 36 are provided in the reinforcing portion 12 b .
  • the insert pin 37 is releasably engageable in a slot in the box body 36 .
  • the box body 36 and the box pin 35 are integrally formed as one piece.
  • the slider 33 is slidably attached to the coupling tooth rows 32 a , 32 b for engaging and disengaging the coupling tooth rows 32 a , 32 b .
  • FIG. 1 shows a state in which the slide fastener 30 is closed
  • FIG. 2 shows the state in which the slide fastener 30 is opened.
  • the fastener tape bodies 11 a and 11 b are, for example, made by weaving or knitting fibers composed of polyethylene terephthalate.
  • FIG. 3 is an A-A′ cross-sectional view of the fastener tape 10 a in FIG. 1 .
  • FIG. 3 is a 100 ⁇ photograph taken with a scanning electron microscope (SEM) from the width direction of FIG. 1 for a cross section obtained by cutting along the vertical direction of FIG. 1 .
  • the fastener tape 10 a comprises a fastener tape body 11 a and a reinforcing portion 12 a provided on at least one main surface of the fastener tape body 11 a .
  • the reinforcing portion 12 a may be provided only on one side of the fastener tape body 11 a , but is generally provided on both sides of the fastener tape body 11 a.
  • the reinforcing portion 12 a is, for example, a single layer comprising a polypropylene resin, and is impregnated and solidified in the fastener tape body 11 a .
  • there is no intermediate layer such as an adhesive layer or an anchor coating agent between the reinforcing portion 12 a and the fastener tape body 11 a , and a reinforcing portion 12 a consisting of a single layer is provided on at least one main surface of the fastener tape body 11 a.
  • the term “impregnated and solidified” refers to a state in which at least a part of the material (for example, reinforcing sheet) that forms the reinforcing portion 12 a permeates into the fibers of the fastener tape body 11 a and solidifies.
  • impregnation and solidification it does not specify an invention of a product by the manufacturing method of the product, because it simply indicates a state to specify the structure or characteristics.
  • the reinforcing portion 12 a is formed by laminating a material (for example, a reinforcing sheet made of a thermoplastic resin) which in turn become the reinforcing portion 12 a on the fastener tape body 11 a , and then heating the fastener tape body 11 a at, for example, 200° C. for about 3 to 10 seconds to weld the reinforcing sheet into the fastener tape body 11 a .
  • a material for the reinforcing portion 12 a is a flexible solid here, it may be a semi-solid such as gel or a liquid.
  • heating means such as a hot plate, ultrasonic waves, and high frequencies can be used for the heating.
  • the material before welding which in turn becomes the reinforcing portion, will be referred to as a reinforcing sheet.
  • the reinforcing portion 12 a comprises a polypropylene resin.
  • the reinforcing portion 12 a consists of polypropylene resin.
  • the type of polypropylene resin is not particularly limited, and may be a propylene homopolymer, or a copolymer of propylene and another ⁇ -olefin having about 2 to 20 carbon atoms. In the case of a copolymer, it may be a random copolymer or a block copolymer.
  • the polypropylene resin may be unmodified or modified.
  • the polypropylene resin is maleic acid-modified polypropylene.
  • the reinforcing portion 12 a in 100 parts by weight of the whole, may comprise 50 to 99 parts by weight of random or block polypropylene, and may comprise 1 to 20 parts by weight of acid modified (for example, maleic acid modified) polypropylene, and may comprise 10 to 40 parts by weight of elastic polypropylene (preferably block copolymer).
  • acid modified for example, maleic acid modified
  • elastic polypropylene preferably block copolymer
  • the thickness d of a fraction which is impregnated and solidified in the fastener tape body 11 a is preferably 20 to 115 ⁇ m.
  • the peeling resistance between the reinforcing portion 12 a and the fastener tape body 11 a after a perchlorate dry test can be made equal to or greater than that of a conventional product.
  • the thickness d is set to 70 ⁇ m or more, it is possible to prevent separation between the reinforcing portion 12 a and the fastener tape body 11 a after the perchlorate dry test, which is more preferable.
  • the thickness d is more preferable because it is possible to prevent the thickness D of the reinforcing sheet from becoming excessively large while suppressing a phenomenon that the fibers of the fastener tape body 11 a are exposed on the surface of the product (the surface of the reinforcing portion 12 a ).
  • the thickness D of the reinforcing sheet can be, for example, within the range of 100 to 160 ⁇ m, such as within the range of 120 to 140 ⁇ m.
  • the ratio d/D between the thickness d of the impregnated and solidified fraction and the thickness D of the reinforcing sheet is preferably 0.14 to 0.83.
  • the thickness d of the impregnated and solidified fraction is defined as a value obtained by subtracting a measured value of product thickness after the impregnation and the solidification (thickness of the reinforcing portion and the fastener tape body) from a value obtained by adding the thickness of the reinforcing sheet, which in turn becomes the reinforcing portion, before the impregnation and the solidification and the thickness of the fastener tape body before the impregnation and the solidification.
  • the peeling resistance between the reinforcing portion 12 a and the fastener tape body 11 a after a perchlorate dry test can be made equal to or greater than that of a conventional product. Further, by setting d/D to 0.50 or more, it is possible to prevent separation between the reinforcing portion 12 a and the fastener tape body 11 a after the perchlorate dry test, which is more preferable.
  • d/D is even more preferably 0.80 or less, and even more preferably 0.70 or less.
  • the reinforcing portion 12 a and the fastener tape body 11 a are crosslinked.
  • Crosslinking is typically accomplished with a crosslinking agent.
  • the type of crosslinking agent is not particularly limited, it is preferable to use carbodiimide as the crosslinking agent when the fastener tape body 11 a comprises polyethylene terephthalate.
  • carbodiimides it is preferable to use cyclic carbodiimides or linear carbodiimides.
  • the reinforcing portion 12 a and the fastener tape body 11 a are crosslinked by cyclic carbodiimide.
  • the acid-modified parts included in the reinforcing portion 12 a , and the carboxyl groups included in the fastener tape body 11 a can be crosslinked.
  • crosslinked when referring to “crosslinked”, it does not specify an invention of a product by the manufacturing method of the product, because it simply indicates a state to specify the structure or characteristics.
  • 0.5 to 8 parts by weight of a crosslinking agent may be further added to 100 parts by weight of the entire reinforcing portion 12 a .
  • the mass ratio of the maleic acid-modified polypropylene and the cyclic carbodiimide is preferably 2:1 to 4:1.
  • the mass ratio of the maleic acid-modified polypropylene and the linear carbodiimide is preferably 0.5:2 to 1.5:2.
  • an anchor coating agent is not used in the reinforcing portion, which is also desirable from an environmental point of view.
  • the reinforcing portion can be easily manufactured without forming a plurality of layers. Furthermore, it is possible to provide a fastener tape in which the peeling resistance between the reinforcing portion and the fastener tape body satisfies a predetermined standard.
  • the structure of Comparative Example 1 is a conventional example, and the fastener tape includes a fastener tape body and a reinforcing tape adhered to at least one main surface of the fastener tape body.
  • the reinforcing tape was prepared by applying a polyester anchor coating agent to the back surface of a 120 ⁇ m thick nylon elastomer film (manufactured by ATOCHEM, flexural modulus 7,500 kg/cm 2) to a thickness of 2 to 3 ⁇ m, and then laminating a polyester hot-melt adhesive layer with a thickness of 60 ⁇ m (manufactured by TOYOBO CO., LTD., Vylon GM900).
  • Comparative Example 1 when the reinforcing tape was adhered to the fastener tape body, the main surface of the fastener tape was impregnated with the adhesive layer (adhesive) of the reinforcing tape. Note that the impregnated thickness d of Comparative Example 1 was the one of the impregnation of the adhesive layer, and thus the impregnated thickness is not necessarily equivalently comparable to Examples 1 to 6, which will be described later.
  • the structure of Example 1 has substantially the same shape as the fastener tape 10 a according to the above embodiment.
  • the fastener tape includes a fastener tape body and a reinforcing portion provided on at least one main surface of the fastener tape body.
  • the reinforcing portion was a single layer containing, for example, a polypropylene resin, and was impregnated and solidified in the fastener tape body by heating the reinforcing sheet at 200° C. for 3 seconds with a heater.
  • the thickness D of the reinforcing sheet was set to 140 ⁇ m, and the fastener tape body and the reinforcing sheet were welded by heating with a clearance distance from the heater set to medium during welding to prepare a fastener tape.
  • a reinforcing portion impregnated in the fastener tape body was formed, and the reinforcing portion was solidified by natural cooling.
  • Example 2 was the same as in Example 1 except that the reinforcing sheet thickness D was set to 120 ⁇ m, and the fastener tape body and the reinforcing sheet were welded by heating with a clearance distance from the heater set to medium during welding to prepare a fastener tape.
  • Example 3 was the same as in Example 1 except that the reinforcing sheet thickness D was set to 140 ⁇ m, and the fastener tape body and the reinforcing sheet were welded by heating with a clearance distance from the heater set to large during welding to prepare a fastener tape.
  • Example 4 was the same as in Example 1 except that the reinforcing sheet thickness D was set to 120 ⁇ m, and the fastener tape body and the reinforcing sheet were welded by heating with a clearance distance from the heater set to large during welding to prepare a fastener tape.
  • Example 5 was the same as in Example 1 except that the reinforcing sheet thickness D was set to 140 ⁇ m, and the fastener tape body and the reinforcing sheet were welded by heating with a clearance distance from the heater set to small during welding to prepare a fastener tape.
  • Example 6 was the same as in Example 1 except that the reinforcing sheet thickness D was set to 120 ⁇ m, and the fastener tape body and the reinforcing sheet were welded by heating with a clearance distance from the heater set to small during welding to prepare a fastener tape.
  • fastener tapes were prepared under each of the seven conditions shown in Table 1, and the presence or absence of peeling was measured after the perchlorate dry test based on JIS L 1931-2.
  • the fastener tape body is exposed from the reinforcing portion laminated and welded to the main surface of the fastener tape body was visually inspected and compared. If the fastener tape body is exposed from the reinforcing portion, it is not preferable from the point of view of aesthetics.
  • the experimental results are shown in Table 1.
  • the impregnation thickness d of the fastener tape of Comparative Example 1 was 20 ⁇ m, and d/D was 0.13.
  • Comparative Example 1 since the reinforcing portion was adhered, the fastener tape body was not exposed.
  • Example 1 the impregnation thickness d of the fastener tape was 70 ⁇ m, d/D was 0.50, and the fastener tape body was not exposed.
  • Example 2 the impregnation thickness d of the fastener tape was 70 ⁇ m, d/D was 0.58, and the fastener tape body was not exposed.
  • Example 3 the impregnation thickness d of the fastener tape was 20 ⁇ m, d/D was 0.14, and the fastener tape body was not exposed.
  • Example 4 the impregnation thickness d of the fastener tape was 20 ⁇ m, d/D was 0.17, and the fastener tape body was not exposed.
  • Example 5 the impregnation thickness d of the fastener tape was 115 ⁇ m, and d/D was 0.82, and the fastener tape body was partly exposed, but the appearance was not greatly impaired.
  • Example 6 the impregnated thickness d of the fastener tape was 100 ⁇ m, and d/D was 0.83, and the fastener tape body was partly exposed, but the appearance was not greatly impaired.
  • each of the Examples prepared according to the present invention while adopting a reinforcing portion having a single-layer structure, achieves a peeling resistance equal to or greater than that of the prior art when its peeling resistance is taken as a standard. That is, it was possible to provide a fastener tape that satisfies a predetermined standard of peeling resistance between the reinforcing portion and the fastener tape body without using an anchor coating agent and in a simple manner. This is considered to be because the fastener tape body was impregnated with the reinforcing portion and solidified, so that the reinforcing portion enters between the fibers of the fastener tape body, and the anchor effect improves the peeling resistance of the fastener tape.
  • the ratio d/D between the impregnation thickness d and the thickness D of the reinforcing sheet to 0.83 or less, particularly 0.80 or less, it is possible to suppress the exposure of the fastener tape body from the reinforcing portion, thereby suppressing appearance defects.
  • the structure of Example 7 has substantially the same shape as the fastener tape 10 a according to the above embodiment.
  • the fastener tape includes a fastener tape body and a reinforcing portion provided on at least one main surface of the fastener tape body.
  • the reinforcing portion was a single layer containing, for example, a polypropylene resin, and was impregnated and solidified in the fastener tape body by heating the reinforcing sheet at 200° C. for 3 seconds with a heater. Furthermore, the reinforcing portion and the fastener tape body were crosslinked by a crosslinking agent.
  • the fastener tape body was 100 parts by weight of polyethylene terephthalate, and assuming the composition of the reinforcing sheet, which in turn became the reinforcing portion, was 100 parts by weight, a fastener tape was prepared by setting 94 parts by weight of polypropylene, 6 parts by weight of maleic acid-modified polypropylene, and adding 2 parts by weight of cyclic carbodiimide as a crosslinking agent.
  • the parts by weight shown in Table 2 are based on 100 parts by weight of the reinforcing sheet composition, and the crosslinking agent was shown as being further added to the 100 parts by weight of the reinforcing sheet composition.
  • Example 8 was the same as in Example 7 except that assuming the composition of the reinforcing sheet, which in turn became the reinforcing portion, was 100 parts by weight, a fastener tape was prepared by setting 97 parts by weight of polypropylene, 3 parts by weight of maleic acid-modified polypropylene, and adding 6 parts by weight of linear carbodiimide as a crosslinking agent.
  • Example 9 was the same as in Example 7 except that assuming the composition of the reinforcing sheet, which in turn became the reinforcing portion, was 100 parts by weight, a fastener tape was prepared by setting 98.5 parts by weight of polypropylene, 1.5 parts by weight of maleic acid-modified polypropylene, and adding 0.5 parts by weight of cyclic carbodiimide as a crosslinking agent.
  • Example 10 was the same as in Example 7 except that assuming the composition of the reinforcing sheet, which in turn became the reinforcing portion, was 100 parts by weight, a fastener tape was prepared by setting 98 parts by weight of polypropylene, 2 parts by weight of maleic acid-modified polypropylene, and adding 4 parts by weight of linear carbodiimide as a crosslinking agent.
  • Example 11 was the same as in Example 7 except that assuming the composition of the reinforcing sheet, which in turn became the reinforcing portion, was 100 parts by weight, a fastener tape was prepared by setting 91 parts by weight of polypropylene, 9 parts by weight of maleic acid-modified polypropylene, and adding 3 parts by weight of cyclic carbodiimide as a crosslinking agent.
  • Example 12 was the same as in Example 7 except that assuming the composition of the reinforcing sheet, which in turn became the reinforcing portion, was 100 parts by weight, a fastener tape was prepared by setting 96 parts by weight of polypropylene, 4 parts by weight of maleic acid-modified polypropylene, and adding 8 parts by weight of linear carbodiimide as a crosslinking agent.
  • Example 13 was the same as in Example 7 except that assuming the composition of the reinforcing sheet, which in turn became the reinforcing portion, was 100 parts by weight, a fastener tape was prepared by setting 96 parts by weight of polypropylene, 4 parts by weight of maleic acid-modified polypropylene, and without adding a crosslinking agent.
  • the experimental results are shown in Table 2.
  • the peel strength of Example 7 was 35 N
  • the peel strength of Example 8 was 25 N
  • the peel strength of Example 9 was 20 N
  • the peel strength of Example 10 was 20 N
  • the peel strength of Example 11 was 38N
  • the peel strength of Example 12 was 22N
  • the peel strength of Example 13 was 1N. Further, in Examples 7 to 10 and 13, yellowing, that is, the resin of the reinforcing portion turning yellow, was not observed, but in Examples 11 and 12, yellowing was observed. Yellowing is undesirable from the point of view of aesthetics.
  • the crosslinking agent is preferably carbodiimide, more preferably added by 0.5 to 8 parts by weight.
  • addition of 4 to 6 parts by weight of linear carbodiimide or 2 to 3 parts by weight of cyclic carbodiimide is preferable from the viewpoint of the balance between improvement in peel strength and prevention of yellowing.

Landscapes

  • Adhesive Tapes (AREA)
  • Slide Fasteners (AREA)
  • Package Frames And Binding Bands (AREA)
US18/272,781 2021-03-30 2021-11-15 Fastener tape Pending US20240074547A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2021-058715 2021-03-30
JP2021058715A JP7164655B2 (ja) 2021-03-30 2021-03-30 ファスナーテープ
PCT/JP2021/041975 WO2022208979A1 (ja) 2021-03-30 2021-11-15 ファスナーテープ

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US18/272,781 Pending US20240074547A1 (en) 2021-03-30 2021-11-15 Fastener tape

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US (1) US20240074547A1 (ja)
JP (1) JP7164655B2 (ja)
CN (1) CN116685232A (ja)
DE (1) DE112021007404T5 (ja)
WO (1) WO2022208979A1 (ja)

Citations (9)

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Publication number Priority date Publication date Assignee Title
US3859162A (en) * 1973-05-11 1975-01-07 Minnesota Mining & Mfg Pre-preg materials, chemically integral composite foam structures prepared therefrom, and methods of preparation
US5472652A (en) * 1992-12-22 1995-12-05 Yoshida Kogyo K.K. Method of continuously reinforcing slide fastener tape ends having separable bottom stop assembly
US20030000051A1 (en) * 2001-06-27 2003-01-02 Hiromi Aoshima Fastener product made of hydrolysis-resistant synthetic resin
US20080189918A1 (en) * 2007-02-08 2008-08-14 Ykk Corporation Liquid-tight slide fastener and method for manufacturing the liquid-tight slide fastener
US20110268929A1 (en) * 2008-12-31 2011-11-03 Tran Thu-Van T Stretch Releasable Adhesive Tape
US20130305499A1 (en) * 2011-01-26 2013-11-21 Ykk Corporation Fastener Chain with Separable Bottom End Stop and Method for Producing the Same
US20150143672A1 (en) * 2012-07-09 2015-05-28 Ykk Corporation Fastener Tape, Slide Fastener Provided with Same, and Fastener Tape Fabrication Method
US20170311684A1 (en) * 2014-10-29 2017-11-02 Ykk Corporation Fastener Element and Method for Producing Same
US20230309663A1 (en) * 2020-08-27 2023-10-05 Ykk Corporation Slide fastener chain and slide fastener

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3589442B2 (ja) * 1998-05-29 2004-11-17 Ｙｋｋ株式会社 ファスナーテープの開離嵌挿具取付部
JP3620973B2 (ja) * 1998-09-30 2005-02-16 Ｙｋｋ株式会社 スライドファスナーの開離嵌挿具
JP3650733B2 (ja) 2000-10-30 2005-05-25 Ｙｋｋ株式会社 スライドファスナーの補強テープ
JP4072953B2 (ja) * 2003-03-20 2008-04-09 Ｙｋｋ株式会社 開離嵌挿具付きスライドファスナー
WO2015019453A1 (ja) * 2013-08-07 2015-02-12 Ykk株式会社 補強フィルム供給カセット及び補強フィルム接着装置
WO2020070845A1 (ja) * 2018-10-03 2020-04-09 Ykk株式会社 スライドファスナー及びスライドファスナー用開離嵌挿具

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3859162A (en) * 1973-05-11 1975-01-07 Minnesota Mining & Mfg Pre-preg materials, chemically integral composite foam structures prepared therefrom, and methods of preparation
US5472652A (en) * 1992-12-22 1995-12-05 Yoshida Kogyo K.K. Method of continuously reinforcing slide fastener tape ends having separable bottom stop assembly
US20030000051A1 (en) * 2001-06-27 2003-01-02 Hiromi Aoshima Fastener product made of hydrolysis-resistant synthetic resin
US20080189918A1 (en) * 2007-02-08 2008-08-14 Ykk Corporation Liquid-tight slide fastener and method for manufacturing the liquid-tight slide fastener
US20110268929A1 (en) * 2008-12-31 2011-11-03 Tran Thu-Van T Stretch Releasable Adhesive Tape
US20130305499A1 (en) * 2011-01-26 2013-11-21 Ykk Corporation Fastener Chain with Separable Bottom End Stop and Method for Producing the Same
US20150143672A1 (en) * 2012-07-09 2015-05-28 Ykk Corporation Fastener Tape, Slide Fastener Provided with Same, and Fastener Tape Fabrication Method
US20170311684A1 (en) * 2014-10-29 2017-11-02 Ykk Corporation Fastener Element and Method for Producing Same
US20230309663A1 (en) * 2020-08-27 2023-10-05 Ykk Corporation Slide fastener chain and slide fastener

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WO2022208979A1 (ja) 2022-10-06
JP2022155286A (ja) 2022-10-13
CN116685232A (zh) 2023-09-01
DE112021007404T5 (de) 2024-01-11
JP7164655B2 (ja) 2022-11-01

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