WO2022085166A1 - 防水性ファスナーストリンガー及びその製造方法 - Google Patents

防水性ファスナーストリンガー及びその製造方法 Download PDF

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Publication number
WO2022085166A1
WO2022085166A1 PCT/JP2020/039775 JP2020039775W WO2022085166A1 WO 2022085166 A1 WO2022085166 A1 WO 2022085166A1 JP 2020039775 W JP2020039775 W JP 2020039775W WO 2022085166 A1 WO2022085166 A1 WO 2022085166A1
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WO
WIPO (PCT)
Prior art keywords
fastener
tape
waterproof
waterproof layer
base cloth
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2020/039775
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English (en)
French (fr)
Japanese (ja)
Inventor
祐季 坂上
峰登 寺田
成章 山本
スティーブン トーマス
マーク ブレディ
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
YKK Corp
Original Assignee
YKK Corp
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 YKK Corp filed Critical YKK Corp
Priority to PCT/JP2020/039775 priority Critical patent/WO2022085166A1/ja
Priority to GB2305354.9A priority patent/GB2614648B/en
Priority to DE112020007732.2T priority patent/DE112020007732T5/de
Priority to US18/033,188 priority patent/US12369694B2/en
Priority to JP2022556338A priority patent/JP7355947B2/ja
Priority to CN202080105645.5A priority patent/CN116234672B/zh
Publication of WO2022085166A1 publication Critical patent/WO2022085166A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
    • A44B19/00—Slide fasteners
    • A44B19/24—Details
    • A44B19/32—Means for making slide fasteners gas or watertight
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14336—Coating a portion of the article, e.g. the edge of the article
    • B29C45/14344—Moulding in or through a hole in the article, e.g. outsert moulding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D5/00—Producing elements of slide fasteners; Combined making and attaching of elements of slide fasteners
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D5/00—Producing elements of slide fasteners; Combined making and attaching of elements of slide fasteners
    • B29D5/08—Producing elements of slide fasteners; Combined making and attaching of elements of slide fasteners the interlocking members being formed by profiled or castellated edge of a stringer
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M10/00—Physical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. ultrasonic, corona discharge, irradiation, electric currents, or magnetic fields; Physical treatment combined with treatment with chemical compounds or elements
    • D06M10/02—Physical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. ultrasonic, corona discharge, irradiation, electric currents, or magnetic fields; Physical treatment combined with treatment with chemical compounds or elements ultrasonic or sonic; Corona discharge
    • D06M10/025—Corona discharge or low temperature plasma
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C2045/1486—Details, accessories and auxiliary operations
    • B29C2045/14868—Pretreatment of the insert, e.g. etching, cleaning
    • B29C2045/14885—Pretreatment of the insert, e.g. etching, cleaning by plasma treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2005/00—Elements of slide fasteners

Definitions

  • This disclosure relates to a waterproof fastener stringer and its manufacturing method.
  • waterproof slide fasteners have been used.
  • Waterproof slide fasteners have traditionally been used in the field of marine sports such as wet suits, and the number of times they are opened and closed is generally not large.
  • the sliding resistance of the slider is large, and a not-so-small force is required to open and close the slider.
  • Patent Document 1 discloses a combination of a waterproof layer made of a polyurethane elastomer and a fastener element made of a polymer alloy of a polyurethane resin and an ABS resin with respect to a waterproof slide fastener.
  • a polyurethane elastomer is used as the waterproof layer in order to promote high-frequency welding of the waterproof slide fastener to a polyurethane-based adherend (paragraphs 0010, 0016, and 0025) of the same document.
  • Patent Document 2 discloses that the protruding portion of the tape fiber is removed by using plasma.
  • Patent Documents 3 to 4 disclose that plasma treatment or corona treatment is performed for surface modification.
  • the fastener element may be placed in a chemically poor environment, and "element turn” may easily occur.
  • a lubricant other than the recommended lubricant for example, grease
  • the fastener element row in order to improve the slidability of the slider. It has been confirmed that when the opening and closing operation is repeated by applying force in such an unexpected case, an element turn occurs even though the number of times the slide fastener is opened and closed is small.
  • the fastener element receives a continuous force from the slider, and the fastener element rotates on the surface of the fastener tape (in short, on the waterproof layer). means.
  • the probability of element turn occurrence increases as the number of times the slide fastener is opened and closed increases. Therefore, suppressing the occurrence of element turns is beneficial even when the fastener element is not in a chemically poor environment.
  • the method for manufacturing a waterproof fastener stringer includes a step of forming through holes through the fastener tape along the side edges of the fastener tape whose tape base cloth is covered with a waterproof layer at a constant pitch.
  • the step of injecting the fastener element and attaching the fastener element to the side edge portion of the fastener tape includes a step in which the molten resin that becomes the fastener element after curing adheres to the activated region and fills the through hole.
  • Plasma treatment or corona treatment is known as a method for improving the wettability of the surface.
  • the wettability of the surface of the fastener tape (particularly the surface of the waterproof layer) is enhanced during injection molding of the fastener element, filling defects or burr formation may occur. This is because the improvement of the wettability of the surface of the waterproof layer affects the behavior of the molten resin in the molding cavity. Poor filling results in a decrease in the energy of adhesion of the fastener element to the waterproof layer.
  • the formation of burrs is not limited to waste of material, increases the burden of visual inspection of the slide fastener product, and may result in a decrease in the yield of the slide fastener in some cases.
  • the inventor of the present application applies plasma treatment or corona treatment to the surface of the waterproof layer to which the fastener element should be attached before the fastener element is injection-molded and attached to the fastener tape.
  • the energy of adhesion of the fastener element to the surface of the waterproof layer can be remarkably increased, and the occurrence of element turns can be remarkably reduced.
  • the number of times the waterproof slide fastener is opened and closed is generally not large, and the maximum number of times it can be opened and closed is not estimated. By suppressing the occurrence of element turns in waterproof slide fasteners, the maximum number of times the waterproof slide fasteners can be opened and closed can be increased, making it possible to develop applications with many times of opening and closing.
  • plasma treatment or corona treatment is applied to the side edge of the fastener tape.
  • plasma treatment or corona treatment is applied to the side edges of the fastener tape.
  • the step of applying plasma or corona treatment to the side edges of the fastener tape on one or both sides of the fastener tape to form an activated region on the surface of the waterproof layer Forming a plasma irradiation area on the surface of the waterproof layer at the side edge of the fastener tape, Including sending fastener tape from upstream to downstream A continuous activation region is formed along the longitudinal direction of the fastener tape.
  • the spot diameter of the plasma irradiation area is larger than the diameter of the through hole.
  • the spot diameter of the plasma irradiation region is less than twice or less than 1.5 times the width of the side edge portion.
  • the step of plasma or corona treating the side edges of the fastener tape on one or both sides to form an activated region on the surface of the waterproof layer is the fastener tape on which the fastener should be formed. It is done excluding the side edge of. It is intermittently prevented that plasma is intermittently irradiated from the plasma irradiation portion or that a plasma irradiation region (plasma spot) is formed on the fastener tape.
  • the process further comprises applying plasma or corona treatment to the tape base before the tape base is coated with a waterproof layer.
  • This step may include forming a plasma irradiation area on the surface of the tape base cloth and feeding the tape base cloth from the upstream side to the downstream side.
  • Waterproof layers can be formed on both the upper and lower sides of the tape base fabric via extrusion molding.
  • the fastener tape may have a tape main portion having an embossed pattern on both sides and a side edge portion having smooth surfaces on both sides.
  • the waterproof layer may be made of polyurethane and the fastener element may be made of polyamide.
  • the fastener element comprises a filling portion that fills the through hole, an upper portion that is coupled to the upper end of the filling portion, and a lower portion that is coupled to the lower end of the filling portion, where the upper and lower parts are head, neck, respectively. And has a torso, the end face of the side edge of the fastener tape is provided in the groove between the upper head and the lower head.
  • the remaining upper or lower part is from the overlapped ends of the waterproof fastener stringer. From the maximum value at which the measured load value first reaches to zero when the load curve is generated by measuring the load required for the displacement of the remaining upper or lower part that is moved away.
  • S> 200 is satisfied, where S indicates the area (unit: N ⁇ mm) of the load curve in the section.
  • the waterproof fastener stringer is a waterproof fastener stringer in which a resin fastener element is attached to a fastener tape whose tape base cloth is covered with a waterproof layer.
  • the fastener element comprises at least one filling portion that fills a through hole through the fastener tape, an upper portion that is coupled to the upper end of the at least one filling portion, and a lower portion that is coupled to the lower end of the at least one filling portion.
  • the area of the load curve can be obtained by adding up the minute areas obtained in this way.
  • a gripper can be used to move to the remaining upper or lower part. In this case, since the gripper and the remaining part of the element move together, the load curve is drawn by measuring the load applied to the gripper for each 0.1 mm displacement of the gripper.
  • the maximum value is 50 N or more, or the maximum value is 58 N or more.
  • grease is applied to the fastener element
  • the moving distance of the slider is set to 600 mm
  • the moving speed is set to 900 mm / s
  • a force of 3 kgf is constantly applied in the longitudinal direction of the slide fastener to constantly apply a force of 3 kgf in the width direction.
  • no element turn occurs even 10,000 times.
  • no element turn occurs even after 20,000 times.
  • the area of the fastener element adhering to the surface of the waterproof layer on one side of the fastener stringer can be 17.08 mm 2 ⁇ 0.2 mm 2 . If the area variation is small, this area can be 17.08 mm 2 ⁇ 0.1 mm 2 .
  • the variation may reflect the variation in heat shrinkage of the material and the like.
  • the adhesion area does not include the area of the through hole (and the area of the inner wall surface of the through hole).
  • the above-mentioned adhesion area is obtained by subtracting the cross-sectional area of the through hole (2.27 mm 2 ) in the same plane from the cross-sectional area (19.35 mm 2 ) of the fastener element in the plane corresponding to the tape surface of the fastener tape.
  • FIG. 1 It is a schematic top view of the slide fastener which concerns on one aspect of this disclosure. It is a schematic partial top view of the left fastener stringer, and the dashed circle shows the through holes formed in the fastener tape at a constant pitch. It is a schematic cross-sectional view along the one-dot chain line III-III of FIG. It is a schematic block diagram regarding the manufacturing apparatus of the slide fastener which concerns on one aspect of this disclosure. It is a schematic diagram which shows the extrusion molding process. It is a schematic diagram which shows the drilling process. It is a schematic diagram which shows the injection molding process. It is the schematic of the fastener tape which tape base cloth was covered with the waterproof layer. It is a schematic diagram of the fastener tape which was perforated.
  • FIG. 1 It is a schematic diagram of the fastener tape to which the fastener element is attached. It is a schematic diagram which shows the state which the lower part of one fastener element is removed in the fastener stringer. It is a schematic diagram which is referred to for explaining the method of a tensile test. It is a graph which shows the load curve of the result of the tensile test of Example 1. It is a graph which shows the load curve of the result of the tensile test of the comparative example 1. FIG. It is a graph which shows the load curve of the result of the tensile test of Example 2. It is a photograph showing a part of the fastener tape before plasma treatment. It is a photograph which shows a part of the fastener tape after plasma treatment.
  • the waterproof slide fastener 1 is a band that is long in the front-rear direction and short in the left-right direction. It has a slider 4 for connecting and disconnecting the fasteners 4, a front stop 5 for connecting the left and right fastener stringers 2 and 3, and a rear stop 6 for connecting the left and right fastener stringers 2 and 3.
  • Each fastener stringer 2 and 3 has a waterproof fastener tape 21 and 31 extending long in the front-rear direction, and a plurality of fastener elements provided on the side edges 23 and 33 of the fastener tapes 21 and 31 at a constant pitch along the front-rear direction. It has 29,39.
  • the remaining portions of the fastener tapes 21 and 31 other than the side edge portions 23 and 33 are referred to as tape main portions 22 and 32.
  • the tape main portions 22 and 32 have a wider left-right width than the side edge portions 23 and 33.
  • the front-rear direction corresponds to the direction in which the slider 4 moves to open and close the slide fastener 1.
  • the left-right direction is orthogonal to the front-back direction and parallel to the tape surfaces of the fastener tapes 21 and 31.
  • the vertical direction is orthogonal to the front-rear direction and is perpendicular to the tape surfaces of the fastener tapes 21 and 31.
  • the tape surface of the fastener tapes 21 and 31 is a surface that defines the thickness of the fastener tapes 21 and 31.
  • the configuration of the fastener stringer 2 on the left side will be described with reference to FIGS. 2 and 3.
  • the configuration of the fastener stringer 3 on the right side is the same as that of the fastener stringer 2 on the left side, and the description thereof will be omitted.
  • through holes 9 are formed in the side edge portions 23 of the fastener tape 21 at a constant pitch along the front-rear direction.
  • the fastener element 29 includes a filling portion 71 for filling the through hole 9, an upper portion 72 coupled to the upper end of the filling portion 71, and a lower portion 73 coupled to the lower end of the filling portion 71.
  • Each of the upper portion 72 and the lower portion 73 has a head portion 76, a neck portion 77, and a body portion 78.
  • each of the upper portion 72 and the lower portion 73 has a shoulder portion 74 and a fin portion 75, both of which are thinner than the head portion 76, the neck portion 77, and the body portion 78.
  • the fin portion 75 extends from the body portion 78 toward the tape main portion 22.
  • the shoulders 74 extend from the torso 78 toward the head 76 on both sides of the neck 77.
  • the side edge portion 23 of the fastener tape 21 protrudes to the right in the groove 79 between the head 76 of the upper portion 72 and the head 76 of the lower portion 73, and the right end surface 23c thereof is exposed in the groove 79.
  • the side edge portion 33 of the fastener tape 31 protrudes to the left in the groove 79 between the head 76 of the upper portion 72 and the head 76 of the lower portion 73, and the left end surface thereof is exposed by the groove 79. do.
  • the right end surface 23c of the fastener tape 21 and the left end surface of the fastener tape 31 face each other and can be in close contact with each other.
  • the fastener tape 21 has a tape base cloth 25 made of a woven fabric, a knitted fabric, or a mixture thereof, and a waterproof layer 26 that covers the peripheral surfaces of the tape base cloth 25 (in short, both upper and lower sides and left and right end faces).
  • the tape base cloth 25 is made of synthetic resin threads woven and / or knitted, and has a large number of gaps that allow fluid flow. For example, when the tape base cloth 25 is woven from a plurality of warps and one weft, a gap is generated between the warps, and similarly, a gap is generated between adjacent weft portions extending in the weft direction. The fluid may flow between the upper and lower surfaces of the tape base cloth 25 through such a gap.
  • a waterproof layer 26 is formed on the tape base cloth 25, and the above-mentioned gap of the tape base cloth 25 is closed.
  • An embossed pattern is formed on the upper and lower surfaces of the waterproof layer 26 in the range of the tape main portions 22 and 32 (see FIG. 2).
  • no embossed pattern is formed on the upper and lower surfaces of the side edge portions 23 and 33, and the surface is simply a smooth surface.
  • the waterproof layer 26 is a polyurethane-based, polyester-based, polyamide-based or vinyl chloride-based thermoplastic elastomer (for example, one of the polyester-based thermoplastic elastomers is commercially available from Toray DuPont Co., Ltd. under the trade name "Hytrell". ) Consists of.
  • Fastener elements 29, 39 consist of one or more thermoplastics selected from the group consisting of polyacetal, polyamide, polypropylene, polybutylene terephthalate, and polycarbonate.
  • the fastener elements 29, 39 consist of a polymer alloy of polyurethane resin and ABS resin.
  • the waterproof layer 26 is polyurethane and the fastener elements 29 and 39 are polyamide.
  • the slider 4 has an upper wing plate, a lower wing plate, and a connecting pillar connecting the upper wing plate and the lower wing plate.
  • the slider 4 is provided with a Y-shaped element passage. Specifically, a connecting pillar is provided at the front end portion of the slider 4, and the left and right front openings of the connecting pillar are provided. One rear opening is provided at the rear end of the slider 4.
  • the left and right separated fastener elements 29 and 39 enter the slider 4 through the left and right front openings, join behind the connecting pillar in the slider 4, and exit from the rear opening.
  • the left and right coupled fastener elements 29 and 39 enter the slider 4 through one rear opening, are separated by a connecting pillar in the slider 4, and the separated fastener elements 29 and 39 exit from each front opening. ..
  • the left and right flanges protruding downward are provided on the left and right side edges of the upper wing plate.
  • the left and right side edges of the lower wing plate are provided with left and right flanges protruding upward.
  • the arrangement of the flange portions facilitates the smooth movement of the fastener elements 29 and 39 in the Y-shaped element passage.
  • the front stopper 5 and the rear stopper 6 are attached to the left and right fastener tapes 21 and 31 via injection molding.
  • the front stop 5 defines the front stop position of the slider 4.
  • the rear stop 6 defines the rear stop position of the slider 4.
  • the fasteners such as the front stopper 5 and the rear stopper 6 are both formed by injection molding like the fastener element and adhere to the fastener tape. However, unlike the fastener element, the fastener adheres to both the left and right fastener tapes and is larger than the fastener element. That is, a larger number of through holes are provided as compared with the fastener element.
  • a method for manufacturing a fastener stringer will be described with reference to FIGS. 4 to 10. As shown in FIG. 4, extrusion molding (S101), drilling (S102), plasma treatment (S103), and finally injection molding (S104) are performed. The two fastener stringers thus manufactured are joined by a slider to form a fastener chain, and then injection molding of the front stopper 5 and the rear stopper 6 is performed.
  • Extrusion molding is performed using, for example, the extruder shown in FIG. Specifically, the tape base cloth 25 and the melted or softened material 26'that becomes the waterproof layer 26 after curing are supplied to the extrusion mold 111, and the melted or softened material 26'is applied to the peripheral surface of the tape base cloth 25. This is cured to form a waterproof layer 26 on the peripheral surface of the tape base cloth 25.
  • the extrusion die 111 has a moving path of the tape base cloth 25 sent from the upstream side to the downstream side, and a supply path for supplying the melted or softened material 26'on both the upper and lower surfaces of the tape base cloth 25 moving in the moving path. ..
  • the tape base cloth 25 is passed through the moving path of the extrusion die 111 and moves the moving path from the upstream side to the downstream side.
  • a feeder such as a screw fills the supply path of the extrusion die 111 with a high temperature and high pressure melt or softener 26'. In this way, the melted or softened material 26'is formed on the upper and lower surfaces of the tape base cloth 25.
  • the viscosity and supply pressure of the melted or softened material 26' are appropriately adjusted for the formation of the target thickness.
  • the melted or softened material 26' is cooled (for example, air-cooled or liquid-cooled) and cured, and is fixed to the tape base cloth 25 as the waterproof layer 26.
  • a transport mechanism for the tape base cloth 25 such as a gripper or a roller is adopted.
  • plasma treatment or corona treatment is performed on both the upper and lower sides or one side of the tape base cloth 25.
  • the surface of the side edge portion of the tape base cloth 25 is modified, and melting or adhesion of the softener 26'to the surface of the tape base cloth 25 is promoted.
  • plasma treatment or plasma treatment is performed on the intermediate region of the left and right side edges extending along the longitudinal direction of the tape base cloth 25 (for example, a region separated from one side edge by a predetermined distance (for example, 5 mm to 15 mm)).
  • Corona treatment is applied. Both the plasma treatment and the corona treatment are surface treatments based on the discharge phenomenon.
  • plasma in which negatively charged electrons and positively charged cations fly around in space is irradiated.
  • the electrons emitted from the electrodes and the negative ions generated accompanying the electrons are irradiated.
  • plasma irradiation portions 121 and 122 are arranged on both the upper and lower sides of the tape base cloth 25 on the upstream side of the extrusion die 111.
  • the plasma irradiation units 121 and 122 irradiate the surface of the side edge portion of the tape base cloth 25 with plasma generated by a plasma source (common or separate) (not shown).
  • the plasma source has a gas flow path and electrodes that plasma excite the gas flowing through the gas flow path.
  • air is adopted as the gas excited by plasma.
  • hydrophilic functional groups are generated on the surface of the threads of the tape base cloth 25 to enhance the wettability.
  • the surface of the thread of the tape base cloth 25 is slightly roughened.
  • the plasma irradiation region (plasma spot) is formed corresponding to or limited to the side edge portion of the tape base cloth 25. It is desirable that the spot diameter of the plasma irradiation region is less than twice or less than 1.5 times the left-right width of the side edge portion of the tape base cloth 25. Needless to say, the tape base cloth 25 can be plasma-treated or corona-treated independently of the extrusion molding. Since the hydrophilic functional group disappears with the passage of time, it is desirable to extrude the product without delay from plasma irradiation.
  • through holes 9 penetrating the fastener tapes 21 and 31 are formed at a constant pitch along the side edges of the fastener tapes 21 and 31.
  • the drilling machine shown in FIG. 6 is used.
  • the drilling machine conveys one or more (three in the figure) punch 131 that can be moved up and down, a support 132 arranged below the punch 131, and fastener tapes 21 and 31.
  • Has rolls 134-137 for the purpose.
  • the fastener tapes 21 and 31 are intermittently stopped and drilled by the punch 131.
  • the punch 131 descends to form through holes 9 in the fastener tapes 21 and 31, and rushes into the holes 132h of the support base 132.
  • the lint generated by cutting the tape base cloth 25 by the punch 131 falls and is collected in the trash can 133.
  • the lower end of the punch 131 is not limited to the single-edged blade as shown in the figure, but can be shaped into a double-edged blade or another sharp edge.
  • the number of punches 131 is arbitrary, and in some cases, one, two, or three or more.
  • the side edges of the fastener tapes 21 and 31 are subjected to plasma treatment on one or both sides of the fastener tapes 21 and 31 to form an activated region on the surface of the waterproof layer 26.
  • corona treatment can be applied as an alternative to plasma treatment.
  • the activation region is a region where a hydrophilic functional group is generated on the surface of the waterproof layer 26 and / or a region where the surface of the waterproof layer 26 is roughened. Hydrophilic functional groups decrease with the passage of time from the time of plasma irradiation. Therefore, it is desirable not to provide a delay time between plasma treatment (S103) and injection molding (S104). In some cases, injection molding (S104) is performed within one week or 48 hours from the end of the plasma treatment (S103).
  • plasma irradiation units 138 and 139 are arranged on both the upper and lower sides of the fastener tapes 21 and 31 on the downstream side of the drilling machine (punch 131).
  • the plasma irradiation units 138 and 139 irradiate the surfaces of the fastener tapes 21 and 31 with the plasma generated by the plasma source.
  • hydrophilic functional groups are generated on the surface of the waterproof layer 26 to enhance the wettability.
  • the surface of the waterproof layer 26 is slightly roughened. By modifying the surface of the waterproof layer in this way, the adhesion between the waterproof layer 26 and the molten resin (and thus the fastener elements 29 and 39) is enhanced.
  • a plasma irradiation region (plasma spot) SP is formed on the surface of the waterproof layer at the side edge of the fastener tape.
  • the fastener tape is sent from the upstream side to the downstream side, and an activation region is continuously formed along the longitudinal direction of the fastener tape.
  • the plasma irradiation region SP is formed corresponding to or limited to the side edge portions 23 and 33, and the waste of electric power required for plasma generation is suppressed. It is desirable that the spot diameter of the plasma irradiation region SP is larger than the diameter of the through hole 9. It is desirable that the spot diameter of the plasma irradiation region SP is less than twice or less than 1.5 times the left-right width of the side edge portions 23 and 33.
  • the regions to be adhered the regions where the fastener elements 29 and 39 are scheduled to adhere
  • the fastener elements 29 and 39 do not adhere to the side edges 23 and 33.
  • the non-adhesive region is a region between the regions to be adhered.
  • Plasma treatment is preferable to corona treatment in order to suppress roughening of non-adhesive regions.
  • the plasma irradiation conditions are appropriately adjusted so as to reduce the degree of roughening of the surface of the waterproof layer 26.
  • the plasma irradiation gas flow rate is 1400 L / h to 1800 L / h
  • the gas type atmosphere the gas type atmosphere
  • the feed rate of the fastener tape is 5 m / min to 15 m / min
  • the separation distance between the plasma irradiation part and the fastener tape immediately below is 5 mm to 50 mm
  • the plasma output It is 300 to 500 W.
  • Plasma treatment or corona treatment may or may not be performed within the adhesion range of the stopper such as front stop or back stop.
  • a shield that intermittently irradiates plasma or blocks plasma irradiation is used. In this case, plasma irradiation is performed in the region where the fastener element is scheduled to be attached and the region where the fastener element is not attached, and plasma irradiation is not performed in the region where the fastener is scheduled to be attached.
  • threads or fibers may remain in the through hole 9.
  • the threads or fibers in the through hole 9 for example, a part of the thread of the tape base cloth 25 has entered the through hole 9, and the lint cut from the thread of the tape base cloth 25 remains in the through hole 9. It may be fiber waste generated when the tape base cloth 25 is drilled.
  • plasma treatment (S103) is performed after drilling (S102) instead of before drilling (S102). As a result, the thread or fiber in the through hole 9 is removed. Threads or fibers in the through holes 9 are prevented from flowing to the surfaces of the fastener elements 29 and 39 during injection molding and visibly appearing on the surfaces of the fastener elements 29 and 39.
  • this problem becomes a particular problem when the color of the fastener element 29 and the color of the thread of the tape base cloth 25 are different, but the problem is not limited to this. It is considered that the thread or fiber receives energy from the plasma and disappears, is cut off, or falls.
  • a separate plasma processing machine that is independent of the drilling machine may be prepared.
  • the plasma processing machine irradiates the side edges of the fastener tape with plasma on both sides or one side to form an activated region on the surface of the waterproof layer.
  • the fastener tape supplied from the drilling machine is wound on a reel.
  • the plasma processing machine pays out the fastener tape from this reel to perform plasma processing.
  • the fastener element is injection molded, and the fastener element adheres to the side edge of the fastener tape.
  • the molten resin that is cured to become a fastener element adheres to the activated region of the waterproof layer 26 and fills the through holes 9 of the side edge portions 23 and 33.
  • the fastener element adheres to the activation region formed on the surface of the waterproof layer 26 by plasma irradiation, and the adhesion strength of the fastener element to the waterproof layer 26 is increased.
  • Injection molding is performed using an injection molding machine in which the upper mold 141 and the lower mold 142 are attached to the mold clamping device. As shown in FIG. 7, fastener tapes 21 and 31 are supplied and sandwiched between the lower mold 142 and the upper mold 141.
  • the molding cavity 146 is defined by the lower mold 142 and the upper mold 141, and the through holes 9 of the side edge portions 23 and 33 are positioned in the molding cavity 146.
  • the molten resin is supplied to the molding cavity 146 through the flow path (sprue, runner, gate) of the mold, and the molding cavity 146 is filled with the molten resin.
  • the molten resin adheres to the activated region on the surface of the waterproof layer 26 and flows into the through hole 9 provided at the side edge portion.
  • the molten resin is cured by cooling the upper mold 141 and the lower mold 142, and the fastener element adheres to the side edge portions 23 and 33.
  • the molten resin that has flowed into the molding cavity 146 solidifies into a filling portion 71 (corresponding to the through hole 9), an upper portion 72 (corresponding to the cavity upper space), and a lower portion 73 (corresponding to the cavity lower space). ..
  • the detailed configuration of the injection molding machine for example, the injection device, the mold clamping device, and the like will be omitted.
  • One through hole 9 is provided for one fastener element 29, 39.
  • the diameter of the through hole 9 is appropriately set to allow the inflow of the molten resin into the through hole 9 and / or the flow of the molten resin in the upper and lower spaces through the through hole 9. If the diameter of the through hole 9 is too small, an unfilled portion may occur. If the diameter of the through hole 9 is too large, the contact area between the fastener elements 29 and 39 and the fastener tapes 21 and 31 becomes small. From the viewpoint of increasing the contact area or another viewpoint, it is desirable that the upper portion 72 and the lower portion 73 have the shoulder portion 74 and / or the fin portion 75 in addition to the head portion 76, the neck portion 77, and the body portion 78. ..
  • the surface of the waterproof layer to which the fastener element should be attached is subjected to plasma treatment or corona treatment.
  • plasma treatment or corona treatment the adhesion energy of the fastener element to the surface of the waterproof layer 26 can be remarkably increased, and the occurrence of element turns can be remarkably reduced.
  • plasma treatment or corona treatment after drilling the threads or fibers in the through holes 9 can be removed by plasma irradiation, and the threads or fibers can be prevented or suppressed from appearing on the surface of the fastener element.
  • the sliding resistance of the slider 4 is high.
  • a lubricant for example, grease
  • the opening and closing operation is repeated by applying force in such an unexpected case, grease may permeate between the fastener element and the waterproof layer, and the peeling of the fastener element from the waterproof layer may be promoted.
  • the fastener element is placed in a chemically poor environment as described above, the occurrence of element turn can be effectively suppressed.
  • Example 1 Plasma was applied to both sides of the side edges of the tape base fabric woven with polyester threads (hereinafter referred to as first plasma irradiation).
  • first plasma irradiation a polyurethane waterproof layer was formed on both sides of the tape base fabric by extrusion molding.
  • the film thickness of the waterproof layer is about 0.2 mm on one side.
  • through holes were formed at a pitch of 5 mm on the side edges of the fastener tape along the longitudinal direction. The through hole penetrates the tape base cloth of the fastener tape and penetrates the waterproof layer formed on the upper and lower surfaces of the tape base cloth.
  • plasma was irradiated on both sides of the side edge portion of the fastener tape (hereinafter referred to as second plasma irradiation).
  • a polyamide fastener element was formed via injection molding and attached to the side edge of the fastener tape.
  • two fastener stringers were prepared and joined together so as to be openable and closable with a slider.
  • extrusion molding was performed within 48 hours (Hour).
  • injection molding was performed within 48 hours (Hour) after the second plasma irradiation.
  • the upper 72 or lower 73 of the remaining fastener element S29 is moved away from the overlapped ends of the waterproof fastener stringer, which is necessary for the displacement of the upper 72 or lower 73 of the remaining fastener element S29.
  • the load (unit: Newton (N)) was measured to generate a load curve.
  • the upper gripper 120 grips the remaining upper 72 or 73 of the fastener element S29.
  • the lower gripper 130 grips the overlapped both ends of the fastener stringer.
  • the upward displacement of the upper gripper 120 causes the fastener element S29 to be displaced upward and finally to be separated from the fastener tape (waterproof layer).
  • a load curve is generated by measuring the upward load (unit: Newton (N)) applied to the upper gripper 120 due to the upward displacement of the upper gripper 120 (unit: millimeters (mm)). Note that FIG. 12 omits the illustration of the fastener element between the grippers 120 and 130.
  • the load curve of Example 1 is shown in FIG.
  • the end line can be set orthogonal to the displacement axis with, and the section defined from the start line and the end line can be set.
  • the waterproof layer is separated from the tape base cloth, and at the maximum value, the waterproof layer is locally separated from the tape base cloth. After the maximum value, the fastener element (remaining upper or lower part) is pulled away from the waterproof layer.
  • the area of the load curve (unit: N ⁇ mm) in the above section reflects the energy of adhesion of the fastener element to the waterproof layer.
  • the adhesion energy (N ⁇ mm) is proportional to the area of the load curve after the maximum value at which the measured load value first reaches, and reflects the adhesion energy of the fastener element to the waterproof layer.
  • Table 1 shows the value of the maximum value for each sample manufactured according to Example 1.
  • the average value of the maximum values is 58.24N.
  • S adhesion energy
  • S> 200 is satisfied, and preferably S> 300 or S> 400 is satisfied.
  • Comparative Example 1 Fastener stringers were manufactured and evaluated under the same conditions except that the first and second plasma irradiations were omitted as compared with Example 1.
  • the load curve of Comparative Example 1 is shown in FIG. In the comparative example, when the adhesion energy is S, S ⁇ 200. Therefore, sufficient adhesion energy cannot be obtained as compared with Example 1.
  • Table 2 shows the value of the maximum value for each sample manufactured according to Comparative Example 1.
  • the average value of the maximum values is 37.3N.
  • the adhesion energy (N ⁇ mm) shown in Table 2 corresponds to the area of the load curve in the same section as in the first embodiment, and reflects the adhesion energy of the fastener element to the waterproof layer.
  • Example 2 A fastener stringer was manufactured and evaluated under the same conditions except that the first plasma irradiation was omitted as compared with Example 1.
  • the load curve of Example 2 is shown in FIG. In Example 2, S> 200 is satisfied as in Example 1.
  • the maximum value is about 54N.
  • Example 1 Comparative Example 1.
  • the slider is reciprocated in the front-rear direction in the slide fastener, and it is determined whether or not the target number of reciprocations of the slider can be reached without causing an element turn. If an element turn occurs before the target number of round trips is reached, the open / close test ends.
  • grease was applied to the fastener element for the purpose of promoting element turn.
  • the moving distance of the slider was 600 mm, and the moving speed was 900 mm / s.
  • Example 1 had a significantly advantageous effect as compared with Comparative Example 1.
  • the load test and the opening / closing test fastener elements of the same or the same size are used.
  • the area where the fastener element adheres to the surface of the waterproof layer on one side of the fastener stringer is 17.08 mm 2 ⁇ 0.2 mm 2 (in short, in each of the above-mentioned implementations and comparative examples). In the meantime, 17.08mm 2 ⁇ 0.1mm 2 ).
  • the adhesion area does not include the area of the through hole (and the area of the inner wall surface of the through hole).
  • Fastener tape is not limited to being manufactured by extrusion molding, but can also be manufactured by crimping a waterproof layer to the tape base cloth.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Textile Engineering (AREA)
  • Slide Fasteners (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
PCT/JP2020/039775 2020-10-22 2020-10-22 防水性ファスナーストリンガー及びその製造方法 Ceased WO2022085166A1 (ja)

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PCT/JP2020/039775 WO2022085166A1 (ja) 2020-10-22 2020-10-22 防水性ファスナーストリンガー及びその製造方法
GB2305354.9A GB2614648B (en) 2020-10-22 2020-10-22 Waterproof fastener stringer and method of producing the same
DE112020007732.2T DE112020007732T5 (de) 2020-10-22 2020-10-22 Wasserdichtes reissverschluss-längsteil und verfahren zu dessen herstellung
US18/033,188 US12369694B2 (en) 2020-10-22 2020-10-22 Waterproof fastener stringer and method of producing the same
JP2022556338A JP7355947B2 (ja) 2020-10-22 2020-10-22 防水性ファスナーストリンガー及びその製造方法
CN202080105645.5A CN116234672B (zh) 2020-10-22 2020-10-22 防水性拉链牙链带及其制造方法

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GB2598337A (en) * 2020-08-27 2022-03-02 Ykk Corp Slide fastener chain and slide fastener

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GB201304004D0 (en) 2013-03-06 2013-04-17 Ykk Europ Ltd Slide fastener stringer and method of preparation
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JPH10243805A (ja) * 1997-03-05 1998-09-14 Ykk Corp 合成樹脂製スライドファスナー
JPH11124494A (ja) * 1997-10-23 1999-05-11 Ykk Corp 生分解性樹脂成形品
JP2012116200A (ja) * 2006-09-29 2012-06-21 Dainippon Printing Co Ltd 三次元加工用加飾シート
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WO2017072925A1 (ja) * 2015-10-29 2017-05-04 Ykk株式会社 ファスナーストリンガー及びその製造方法、並びに金型

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GB2614648A (en) 2023-07-12
GB2614648B (en) 2024-11-06
JPWO2022085166A1 (enExample) 2022-04-28
DE112020007732T5 (de) 2023-08-17
GB202305354D0 (en) 2023-05-24
US20230397700A1 (en) 2023-12-14
CN116234672A (zh) 2023-06-06
JP7355947B2 (ja) 2023-10-03
CN116234672B (zh) 2025-08-05

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