WO2016181563A1 - Élément de fermeture et fermeture - Google Patents

Élément de fermeture et fermeture Download PDF

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Publication number
WO2016181563A1
WO2016181563A1 PCT/JP2015/063951 JP2015063951W WO2016181563A1 WO 2016181563 A1 WO2016181563 A1 WO 2016181563A1 JP 2015063951 W JP2015063951 W JP 2015063951W WO 2016181563 A1 WO2016181563 A1 WO 2016181563A1
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WO
WIPO (PCT)
Prior art keywords
fastening member
fastener
aluminum powder
resin
aluminum
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Ceased
Application number
PCT/JP2015/063951
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English (en)
Japanese (ja)
Inventor
俊幸 浅見
清香 中村
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YKK Corp
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YKK Corp
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Publication date
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Priority to PCT/JP2015/063951 priority Critical patent/WO2016181563A1/fr
Priority to TW105109076A priority patent/TWI599327B/zh
Publication of WO2016181563A1 publication Critical patent/WO2016181563A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • A44B19/02—Slide fasteners with a series of separate interlocking members secured to each stringer tape
    • A44B19/04—Stringers arranged edge-to-edge when fastened, e.g. abutting stringers
    • A44B19/06—Stringers arranged edge-to-edge when fastened, e.g. abutting stringers with substantially rectangular members having interlocking projections and pieces

Definitions

  • the present invention relates to a fastening member, and more particularly to a glossy fastening member made of a resin composition.
  • the present invention also relates to a fastener provided with a fastening member.
  • Fastening products such as slide fasteners, snap buttons, buckles and the like have been generally used as means for fastening two members.
  • Fastening products such as slide fasteners are provided with various fastening members such as fastener elements, and these fastening members are inexpensive and easily adaptable to various shapes by injection molding synthetic resin. Often formed.
  • a synthetic resin fastening member usually has a poor glossiness, and therefore has a side where a high-quality feeling cannot be obtained in the fastening product.
  • a fastening member such as a fastener element may be made of a metal such as copper or aluminum.
  • a fastening product having such a metal fastening member has a higher manufacturing cost than the case of using a synthetic resin fastening member, and the manufacturing method requires a plurality of steps and is complicated.
  • the metal fastening member is heavier than the synthetic resin fastening member, when the fastening product is attached to the final product such as clothes or a bag, the weight of the final product itself increases. Therefore, for example, in a product aimed at reducing the weight, there is a case where a fastening member made of a synthetic resin has to be selected from the viewpoint of cost and weight, although it is desired to give glossiness to the fastening product.
  • Patent Document 1 proposes a fastening member in which an aluminum metal flake is kneaded with a synthetic resin and injection molded.
  • the average particle diameter of the metal flakes is set to 3 ⁇ m or more and 8 ⁇ m or less, and a plurality of small metal flakes with controlled average particle diameters are uniformly kneaded in a synthetic resin, so that there is a high-class feeling. It is described that gloss can be obtained as a whole of the member and that the required strength can be stably obtained by kneading the metal flakes.
  • the metal flakes are too small to obtain a stable gloss, and when the average particle diameter of the metal flakes is larger than 8 ⁇ m, the metal flakes are too large, It is also described that since the fastening member is decorated in a lamellar shape, a high-quality gloss is not stably given to the fastening member, and a texture like metal is not obtained.
  • Patent Document 2 Japanese Patent No. 4009903 (Patent Document 2) describes that 0.1 to 200 parts by weight of a fiber reinforcing material is blended with 100 parts by weight of a polyester resin.
  • the glossy resin fastening member can be obtained in the invention described in Patent Document 1, there is still room for improvement in terms of strength and thermal stability.
  • a method of adding a fiber reinforcing material can be considered.
  • the fastening member becomes a dull color and the brightness is large. It turns out that there is a problem that it falls. For example, when glass fiber is added, a phenomenon occurs in which the fastening member becomes white and loses gloss.
  • the present invention was created in view of the above circumstances, and an object of the present invention is to provide a fastening member made of a resin composition having improved brightness, thermal stability and strength in a well-balanced manner. Another object of the present invention is to provide a fastener having such a fastening member.
  • the present inventor has intensively studied to solve the above-mentioned problems.
  • the reinforcing fiber and the aluminum powder considerably larger than the dimensions proposed in Patent Document 1 are blended at a predetermined ratio with respect to the resin.
  • the present invention has been completed based on such findings.
  • the present invention is a fastening comprising a resin composition containing 5 to 25% by mass of reinforcing fibers having an average fiber diameter of 3 to 13 ⁇ m and 1.5 to 5% by mass of aluminum powder having an average particle size of 50 to 150 ⁇ m. It is a member.
  • the surface of the aluminum powder is coated with a resin.
  • the main component of the resin in the resin composition is polyacetal.
  • the aluminum powder is a powder having a structure in which a resin film is coated with aluminum or an aluminum alloy.
  • the average particle size of the aluminum powder is 70 to 110 ⁇ m.
  • the content of aluminum powder in the resin composition is 2 to 3% by mass.
  • the present invention is a fastener including the fastening member according to the present invention.
  • the fastener is a slide fastener and the fastening member is an element.
  • the present invention is an article provided with the fastener according to the present invention.
  • the fastening member according to the present invention has high luminance, it is possible to express high-quality gloss.
  • the fastening member according to the present invention has an excellent balance between strength and thermal stability, and is highly practical.
  • the fastening member which concerns on this invention has resin as a main component, it is cheap compared with a metal fastening member, and the advantage that it is lightweight is also acquired.
  • the reinforcing fiber used in the present invention is not limited.
  • organic fibers such as carbon fiber, aramid fiber, and cellulose fiber
  • Inorganic fibers such as wollastonite and whiskers (eg, calcium titanate whisker, calcium carbonate whisker, aluminum borate whisker) can be used.
  • wollastonite and whiskers eg, calcium titanate whisker, calcium carbonate whisker, aluminum borate whisker
  • Glass fibers that can be suitably used in the present invention include glass such as E glass (Electrical glass), C glass (Chemical glass), A glass (Alkali glass), S glass (High strength glass), and alkali-resistant glass.
  • E glass Electrode glass
  • C glass Chemical glass
  • a glass Alkali glass
  • S glass High strength glass
  • alkali-resistant glass One obtained by spinning into a filament shape can be mentioned.
  • the glass monofilament used in the present invention is preferably one obtained by melt spinning E glass into a filament form from the viewpoint of the reinforcing effect.
  • the content of reinforcing fibers in the resin composition is preferably 5% by mass or more, more preferably 10% by mass or more, and 13% by mass or more. Even more preferably.
  • the content of the reinforcing fiber exceeds 25% by mass, an adverse effect on the luminance becomes remarkable, and it becomes difficult to obtain a high-quality gloss.
  • the content of the reinforcing fiber in the resin composition is preferably 25% by mass or less, more preferably 20% by mass or less, and still more preferably 17% by mass or less.
  • the average fiber diameter of the reinforcing fibers in the fastening member also significantly affects the strength of the fastening member and the wear resistance of the fastener. If the average fiber diameter of the reinforcing fibers in the fastening member is less than 3 ⁇ m, it is difficult to obtain a sufficient reinforcing effect. Further, the larger the average fiber diameter of the reinforcing fibers, the better the wear resistance of the fastening member. Therefore, the average fiber diameter of the reinforcing fibers in the fastening member is preferably 4 ⁇ m or more, more preferably 5 ⁇ m or more, and even more preferably 6 ⁇ m or more.
  • the average fiber diameter of the reinforcing fibers in the fastening member is preferably 13 ⁇ m or less, more preferably 11 ⁇ m or less, still more preferably 10 ⁇ m or less, and even more preferably 9 ⁇ m or less.
  • the average fiber diameter of the reinforcing fibers in the fastening member can be measured by the following method.
  • the resin component is removed by baking for 2 hours in an electric furnace holding the fastening member at 600 ° C, or in the case of organic fibers, for 5 hours in an electric furnace holding the fastening member at 500 ° C.
  • SEM scanning electron microscope
  • the fiber diameter of the reinforcing fiber in the resin may be similarly measured using a microfocus X-ray fluoroscopy / CT apparatus without firing.
  • the fiber diameter of the reinforcing fiber does not change even after kneading into the resin or injection molding, so if the average fiber diameter of the reinforcing fiber before kneading is measurable, it is the average fiber diameter of the reinforcing fiber in the fastening member. be equivalent to.
  • the reinforcing fiber is generally composed of a surface coated with a sizing agent.
  • a sizing agent By coating the reinforcing fiber with the sizing agent, there is an advantage that the adhesiveness with the resin is increased and the effect of improving the strength is enhanced.
  • the sizing agent include, but are not limited to, urethane-based, polyester-based, acrylic-based, epoxy-based, and other various coupling agents. More preferred are urethane, acrylic and silane coupling agents.
  • coupling agents include silane coupling agents, titanate coupling agents, aluminum coupling agents, chromium coupling agents, zirconium coupling agents, borane coupling agents, and the like, preferably silane cups.
  • silane coupling agent examples include triethoxysilane, vinyltris ( ⁇ -methoxyethoxy) silane, ⁇ -methacryloxypropyltrimethoxysilane, ⁇ -glycidoxypropyltrimethoxysilane, ⁇ - (3,4 -Epoxycyclohexyl) ethyltrimethoxysilane, N- ⁇ - (aminoethyl) - ⁇ -aminopropyltrimethoxysilane, N- ⁇ - (aminoethyl) - ⁇ -aminopropylmethyldimethoxysilane, ⁇ -aminopropyltriethoxysilane N-phenyl- ⁇ -aminopropyltrimethoxysilane, ⁇ -mercaptopropyltrimethoxysilane, ⁇ -chloropropyltrimethoxysilane, etc., preferably ⁇ -aminopropyltriethoxysi
  • the aluminum powder refers to a powder having aluminum or an aluminum alloy as a base material or a powder having a structure in which a resin film is coated with aluminum or an aluminum alloy.
  • aluminum powder can be manufactured by crushing aluminum or an aluminum alloy ingot or foil, or by finely cutting aluminum powder after vacuum-depositing aluminum on one or both sides of a resin film such as polyester. Is possible.
  • the surface of the aluminum powder may be coated with a resin such as melamine resin or acrylic resin for surface protection.
  • the aluminum powder is preferably a powder having a structure in which aluminum or an aluminum alloy is coated on a resin film from the viewpoint of achieving both lightness and glossiness, and among them, those having a scaly shape tend to exhibit gloss. preferable.
  • the present invention aluminum powder having an average particle size of 50 to 150 ⁇ m is blended in the resin composition.
  • the aluminum powder used in the present invention has a feature that the particle size is considerably larger than that of the prior art.
  • the particle size of the aluminum powder is large, the strength of the fastening member is likely to be reduced.
  • the disadvantage of strength reduction can be covered by appropriately blending the reinforcing fibers.
  • aluminum powder having a small particle size is used, the thermal stability and brightness of the fastening member are significantly reduced.
  • the average particle size of the aluminum powder is preferably 50 ⁇ m or more, more preferably 70 ⁇ m or more, and even more preferably 90 ⁇ m or more.
  • the average particle size of the aluminum powder is preferably 150 ⁇ m or less, more preferably 130 ⁇ m or less, and even more preferably 110 ⁇ m or less.
  • the average particle size of the aluminum powder is obtained by solidifying the periphery of the fastening member with a two-component mixed type curable resin or the like, and then polishing the surface of the fastening member as necessary to expose the aluminum powder. This is given as an arithmetic average when the particle diameter of 100 aluminum powders is measured by observation with a scanning electron microscope (SEM) at a magnification of 200 times.
  • SEM scanning electron microscope
  • the particle diameter of each aluminum powder is measured by determining the equivalent circle diameter of the powder (the diameter of the circle corresponding to the area of the aluminum powder in the observation field).
  • the content of the aluminum powder in the resin composition is preferably 1.5% by mass or more, and more preferably 2% by mass or more.
  • the content of aluminum powder in the resin composition is preferably 5% by mass or less, more preferably 4% by mass or less, and 3% by mass or less. Is even more preferred.
  • Resins that can be used in the fastening member according to the present invention are not limited, but include polyacetal (POM), polycarbonate (PC), polyphenylene sulfide (PPS), polyamide (PA), polybutylene terephthalate (PBT), and modification.
  • Engineering plastics such as polyphenylene ether (m-PPE), general-purpose resins such as polyolefin (polyethylene (PE) and polypropylene (PP), etc.), polystyrene (PS) and polyvinyl chloride (PVC), etc. are compared.
  • Polyacetal from the viewpoint that it is possible to suppress degradation of aluminum powder and resin due to powder, and that it is a milky white or transparent material and easily obtains high brightness and high color development. (POM) and polyolefins are preferred Properly, the reason that it is easy issued has transparent gloss, polyacetal (POM) is more preferable.
  • POM polyacetal
  • These resins may be used alone or in combination of two or more, but the resin used in the resin composition is preferably composed mainly of polyacetal.
  • Polyacetal is a high molecular compound having an oxymethylene group (—CH 2 O—) as a main structural unit, and is also referred to as polyoxymethylene (POM).
  • Polyacetal is an engineering resin having an excellent balance of strength, elastic modulus, creep characteristics, impact resistance, and repeated fatigue characteristics, and is suitable as a material for fastening members.
  • the polyacetal usable in the present invention includes, but is not limited to, polyacetal homopolymer and polyacetal copolymer. Although it does not limit as a polyacetal homopolymer, The polyacetal homopolymer obtained by homopolymerizing a formaldehyde monomer or a cyclic oligomer of formaldehyde is mentioned as a representative example. Moreover, as a polyacetal copolymer, although not limited, the polyacetal copolymer obtained by copolymerizing a formaldehyde monomer or a cyclic oligomer of formaldehyde, and cyclic ether and / or cyclic formal is mentioned as a representative example.
  • Examples of the cyclic oligomer of formaldehyde include formaldehyde trimer (trioxane) and tetramer (tetraoxane).
  • Examples of the cyclic ether and cyclic formal include glycols such as ethylene oxide, propylene oxide, epichlorohydrin, 1,3-dioxolane and 1,4-butanediol formal, and cyclic formals of diglycol.
  • polyacetal copolymer a branched polyacetal copolymer obtained by copolymerizing a monofunctional glycidyl ether, or a polyacetal copolymer having a crosslinked structure obtained by copolymerizing a polyfunctional glycidyl ether can also be used.
  • the polyacetal homopolymer has a block component obtained by polymerizing a formaldehyde monomer or a cyclic oligomer of formaldehyde in the presence of a compound having a functional group such as a hydroxyl group at both ends or one end, for example, polyalkylene glycol.
  • a compound having a functional group such as a hydroxyl group at both ends or one end, for example, a hydrogenated polybutadiene glycol, a formaldehyde monomer or a cyclic oligomer of formaldehyde, a cyclic ether and / or a cyclic formal.
  • a polyacetal copolymer having a block component obtained by copolymerization with can also be used.
  • any of a polyacetal homopolymer and a polyacetal copolymer may be used and is not particularly limited. These polyacetal resins may be used alone or in combination of two or more.
  • the total content of the resin, the reinforcing fiber, and the aluminum powder is typically 90% by mass or more, and more typically 95% by mass or more.
  • the total content can be 98% by mass or more, and further can be 100% by mass.
  • other additives such as dyes, pigments, heat stabilizers, weathering agents, hydrolysis agents, etc. in the resin composition are used in total, for example, 10% by mass or less, typically 5% by mass or less, More typically, you may add so that it may become 2 mass% or less.
  • the resin composition according to the present invention can be produced by melt-kneading the above-described constituent components using an apparatus such as a single screw extrusion kneader, a twin screw extrusion kneader, and a kneader.
  • a fastening member having a desired shape can be produced by a conventional molding means such as injection molding.
  • a method is generally employed in which an element row is injection-molded on one side edge of the fastener tape and the element row is fixed to the fastener tape simultaneously with the injection molding.
  • FIG. 1 is a schematic diagram of a slide fastener, in which a pair of fastener tapes 2 having a core portion 21 formed on one side edge side and an element 3 attached to the core portion 21 of the fastener tape 2 at a predetermined interval.
  • the upper stopper 4 and the lower stopper 5 fixed to the core 21 of the fastener tape 2 at the upper end and lower end of the row of the elements 3 and the row of the pair of elements 3 facing each other; Is provided with a slider 6 that is slidable in the vertical direction to engage and disengage.
  • the element 3, the upper stopper 4, the lower stopper 5, and the slider 6 can be configured by the fastening member according to the present invention.
  • a device in which a row of elements 3 is attached along one side edge of a single fastener tape 2 is called a fastener stringer, and a device in which the rows of elements 3 of a pair of fastener stringers are engaged with each other is called a fastener chain.
  • the lower stopper 5 may be a break-and-fit insert made up of a butterfly stick, a box stick, and a box, and the pair of slide fastener chains can be separated by an opening operation of the slider 6.
  • the insulating material used for the fastener tape 2 is not limited, but may be a natural resin or a synthetic resin. Generally, the fastener tape 2 is formed by weaving or knitting these fibers. As the material of the fastener tape 2, typically, polyester, polyamide, polypropylene, acrylic, or the like can be used. Among these, polyester is preferable in terms of excellent lateral pulling strength.
  • ⁇ Slide fasteners can be attached to various items, and function especially as an opening / closing tool.
  • the article to which the slide fastener is attached is not particularly limited, and examples thereof include daily necessaries such as clothing, bags, shoes, and miscellaneous goods, and industrial articles such as water storage tanks, fishing nets, and space suits.
  • the fastener member concerning the present invention is not necessarily limited to a slide fastener. It can also be applied as a snap fastener or other fastening member.
  • a twin-screw extrusion kneader (Toshiba Machine, TEM-18SS) was used so that the POM copolymer, glass fiber, and aluminum powder had the blending ratios (mass basis) of the examples and comparative examples shown in Table 1.
  • the molten resin was extruded into a strand shape, solidified in a cooling water tank, and then the strand was cut with a pelletizer to obtain a pellet.
  • a dumbbell specimen dimension JIS K7139 type A
  • a prismatic plate (dimension 80 mm ⁇ 10 mm ⁇ 4 mm) were molded by injection molding.
  • a fastener using a pellet chain as a material of an element using a fastener chain manufacturing apparatus in which a large number of element molds are arranged by a fixed mold and a movable mold, and the elements can be continuously injection-molded on a tape.
  • a chain (chain thickness (t) of 1.9 mm, chain width (w) of 5.7 mm, element pitch (p) of 2.4 mm) was produced.
  • the average fiber diameter of the glass fiber was calculated by the method described above by observation with a scanning electron microscope (SEM) after removing the resin component by firing the element in an electric furnace maintained at 600 ° C. for 2 hours.
  • SEM scanning electron microscope
  • the average particle size of the aluminum powder is obtained by solidifying the periphery of the element with a two-component mixed type curable resin, then polishing the surface to expose the aluminum powder, and using a scanning electron microscope (SEM) at a magnification of 200 times. It was calculated by the method described above by observation.
  • SEM scanning electron microscope
  • Thermal stability test One element was extracted from the fastener chain (product), and the weight loss rate when heated for 65 minutes at 220 ° C. using a differential thermal balance (TG-DTA) apparatus manufactured by Rigaku Corporation was determined.
  • TG-DTA differential thermal balance
  • ⁇ Tensile test (according to JIS K7162: 1994)> Pull the dumbbell test piece to a tensile tester with both ends sandwiched between chucks so that the initial distance between the grippers is 115 mm, and pull until it breaks at a pulling speed of 5 mm / min, and measure the maximum load at that time I went there.
  • ⁇ Bending strength (according to JIS K7171: 2008)> The dumbbell test piece was subjected to a bending tester, a three-point bending test (distance between fulcrums supporting the test piece: 64 mm) was performed at a bending speed of 2 mm / min, and the maximum load until the test piece was broken was obtained.
  • ⁇ Bending elastic modulus (conforms to JIS K7171: 2008)>
  • the dumbbell test piece was subjected to a bending tester, a three-point bending test (distance between fulcrum supporting the test piece: 6.4 mm) was performed at a bending speed of 2 mm / min, and a load-deflection curve was drawn to obtain a bending elastic modulus.
  • ⁇ Luminance (L-value slope)> Using a spectrocolorimeter (model: CM-512m3A) manufactured by Konica Minolta, the L value was measured with three light sources (25 °, 45 °, 75 °). The result was plotted with the light source angle on the horizontal axis and the L value on the vertical axis to draw an approximate curve, and the inclination was calculated. In addition, the luminance was evaluated by the numerical value and appearance, and ⁇ was ⁇ 0.3 or less, ⁇ was ⁇ 0.4 or less, and ⁇ was ⁇ 0.5 or less. In general, the L value is larger when the incident angle is smaller, and becomes smaller as the incident angle is larger.
  • ⁇ Weld evaluation> As weld evaluation, the injected plate was confirmed visually and the presence or absence of the weld line was evaluated. Evaluation was made according to the following three criteria. ⁇ ⁇ ⁇ ⁇ No weld line ⁇ ⁇ ⁇ ⁇ Welding line is inconspicuous ⁇ ⁇ ⁇ ⁇ Welding line is conspicuous
  • Comparative Example 1 and Comparative Example 2 having different aluminum powder structures and small particle sizes were inferior to Examples in strength and thermal stability.
  • Comparative Example 3 since the content of the aluminum powder was small, satisfactory luminance could not be obtained. Since Comparative Examples 4 and 5 did not contain glass fiber, the strength was insufficient overall. Although the comparative example 6 mix
  • Examples 1 to 4 since the specifications and contents of the glass fiber and the aluminum powder were appropriate, excellent strength, thermal stability and high luminance could be achieved in a balanced manner.

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Abstract

L'invention concerne un élément de fermeture, formé à partir d'une composition de résine, l'équilibre entre luminosité, thermostabilité et résistance étant amélioré. Cet élément de fermeture comprend une composition de résine contenant de 5 à 25 % en masse de fibres de renforcement ayant un diamètre moyen de fibre compris entre 3 et 13 µm, et de 1,5 à 5 % en masse de poudre d'aluminium ayant un diamètre moyen de grain compris entre 50 et 150 µm.
PCT/JP2015/063951 2015-05-14 2015-05-14 Élément de fermeture et fermeture Ceased WO2016181563A1 (fr)

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PCT/JP2015/063951 WO2016181563A1 (fr) 2015-05-14 2015-05-14 Élément de fermeture et fermeture
TW105109076A TWI599327B (zh) 2015-05-14 2016-03-23 Buckle structure and buckle knot

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PCT/JP2015/063951 WO2016181563A1 (fr) 2015-05-14 2015-05-14 Élément de fermeture et fermeture

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5858003A (ja) * 1981-10-05 1983-04-06 ワイケイケイ株式会社 スライドフアスナ−
JPS60167521U (ja) * 1984-04-17 1985-11-07 ワイケイケイ株式会社 強化プラスチツク製スライドフアスナ−用スライダ−
JP2002256151A (ja) * 2001-02-28 2002-09-11 Toyo Aluminium Kk 熱可塑性樹脂組成物及びその成形体
JP2003096403A (ja) * 2001-09-27 2003-04-03 Nippon Paint Co Ltd 角度変色塗膜形成粉体塗料組成物および角度変色塗膜の形成方法
JP2003225102A (ja) * 2001-11-30 2003-08-12 Asahi Kasei Corp スライドファスナー部品
JP2005160667A (ja) * 2003-12-02 2005-06-23 Toyobo Co Ltd 染色に適するスライドファスナー用部品およびスライドファスナー

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5858003A (ja) * 1981-10-05 1983-04-06 ワイケイケイ株式会社 スライドフアスナ−
JPS60167521U (ja) * 1984-04-17 1985-11-07 ワイケイケイ株式会社 強化プラスチツク製スライドフアスナ−用スライダ−
JP2002256151A (ja) * 2001-02-28 2002-09-11 Toyo Aluminium Kk 熱可塑性樹脂組成物及びその成形体
JP2003096403A (ja) * 2001-09-27 2003-04-03 Nippon Paint Co Ltd 角度変色塗膜形成粉体塗料組成物および角度変色塗膜の形成方法
JP2003225102A (ja) * 2001-11-30 2003-08-12 Asahi Kasei Corp スライドファスナー部品
JP2005160667A (ja) * 2003-12-02 2005-06-23 Toyobo Co Ltd 染色に適するスライドファスナー用部品およびスライドファスナー

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TW201639490A (zh) 2016-11-16

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