WO2020235633A1 - 面ファスナー付の樹脂成形体、その製造方法、及び車体に自動車用天井材を固定する方法 - Google Patents

面ファスナー付の樹脂成形体、その製造方法、及び車体に自動車用天井材を固定する方法 Download PDF

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Publication number
WO2020235633A1
WO2020235633A1 PCT/JP2020/020117 JP2020020117W WO2020235633A1 WO 2020235633 A1 WO2020235633 A1 WO 2020235633A1 JP 2020020117 W JP2020020117 W JP 2020020117W WO 2020235633 A1 WO2020235633 A1 WO 2020235633A1
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WO
WIPO (PCT)
Prior art keywords
male
hook
molded body
resin molded
resin
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/JP2020/020117
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English (en)
French (fr)
Japanese (ja)
Inventor
小野　悟
佳克 藤澤
糸井　裕一
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.)
Kuraray Fastening Co Ltd
Original Assignee
Kuraray Fastening Co Ltd
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 Kuraray Fastening Co Ltd filed Critical Kuraray Fastening Co Ltd
Priority to JP2021520844A priority Critical patent/JPWO2020235633A1/ja
Priority to US17/610,464 priority patent/US11992098B2/en
Priority to CN202080037766.0A priority patent/CN113874255B/zh
Priority to EP20810601.3A priority patent/EP3973811A4/en
Publication of WO2020235633A1 publication Critical patent/WO2020235633A1/ja
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
    • A44B18/00—Fasteners of the touch-and-close type; Making such fasteners
    • A44B18/0069—Details
    • A44B18/0076—Adaptations for being fixed to a moulded article during moulding
    • 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
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B60R13/02—Internal Trim mouldings ; Internal Ledges; Wall liners for passenger compartments; Roof liners
    • B60R13/0206—Arrangements of fasteners and clips specially adapted for attaching inner vehicle liners or mouldings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B60R13/02—Internal Trim mouldings ; Internal Ledges; Wall liners for passenger compartments; Roof liners
    • B60R13/0212—Roof or head liners
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/10—Polymers of propylene
    • B29K2023/12—PP, i.e. polypropylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2067/00—Use of polyesters or derivatives thereof, as moulding material
    • 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
    • B29L2031/00—Other particular articles
    • B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof

Definitions

  • the present invention relates to a resin molded body with a hook-and-loop fastener for fixing an automobile ceiling material to a vehicle body, a method for manufacturing the same, and a method for fixing the automobile ceiling material to the vehicle body.
  • a male hook-and-loop fastener having a hook type engaging element is fixed to either one of the object and the surface of the object, and a loop type is attached to the other.
  • a method is used in which an object and an object are fixed by fixing a female hook-and-loop fastener having an engaging element and then overlapping and engaging with each other.
  • a combination of a male hook-and-loop fastener and a female hook-and-loop fastener is used as a means for fixing the ceiling material to the vehicle body body.
  • a method is used in which a male hook-and-loop fastener is attached to the back surface of an automobile ceiling material, a female hook-and-loop fastener is attached to the vehicle body side, and both surface fasteners are engaged to fix the ceiling material to the vehicle body. Has been done.
  • a woven male hook-and-loop fastener in which a monofilament is fixed in a hook shape on the surface of a base cloth made of a woven fabric is known.
  • This woven male hook-and-loop fastener has the advantage that the engaging force does not decrease even after repeated engagement and peeling, but on the other hand, the engaging force itself is low and a high engaging force is required for automobiles. It was not suitable as a hook-and-loop fastener for fixing ceiling materials.
  • a male molded surface fastener in which a large number of thick male engaging elements made of the same resin are present on the surface of a substrate made of a resin sheet is preferable.
  • Various male-shaped molded surface fasteners that can obtain high engaging force have been proposed.
  • Patent Document 1 states that as a male molded surface fastener used for fixing an automobile ceiling interior material to a vehicle body, a polyolefin-based fastener such as polyethylene or polypropylene, a polyester-based fastener such as polyethylene terephthalate or polybutylene terephthalate, or nylon 6 Using a polyamide-based thermoplastic resin such as nylon 66 or nylon 66, or a male molded surface fastener manufactured from a polyester-based, polyolefin-based, or polyurethane-based elastomer resin, such a male-molded hook-and-loop fastener is attached to an adhesive or adhesive.
  • a polyolefin-based fastener such as polyethylene or polypropylene
  • a polyester-based fastener such as polyethylene terephthalate or polybutylene terephthalate
  • nylon 6 Using a polyamide-based thermoplastic resin such as nylon 66 or nylon 66, or a male molded surface fastener manufactured
  • Patent Document 2 also describes that a male molded surface fastener made of the same resin as the resin described in Patent Document 1 is attached to the back surface of an automobile ceiling material by an adhesive.
  • the automobile has a strong adhesive force and adhesive force even at a high temperature of more than 120 ° C. and a low temperature of -30 ° C or less. It is required that such adhesive strength and adhesive strength do not deteriorate for a long period of time, and there are few adhesives and adhesives that satisfy such a requirement.
  • an adhesive since the back surface of the fastener and the adhesive or adhesive are often different resin types and materials, the purpose is to firmly bond the back surface of the fastener and the adhesive.
  • the substrate of the hook-and-loop fastener is easily softened by the heat when it is melted, and the surface fastener is in that state.
  • the male engaging element rising from the surface of the substrate easily falls down and the engaging performance of the hook-and-loop fastener is impaired.
  • the fastener is intended to firmly bond the back surface of the fastener and the adhesive.
  • the present invention has been made in view of the above-mentioned conventional problems, and provides a resin molded body with a hook-and-loop fastener having excellent engaging force, and a method for manufacturing the same. Further, the present invention has adhesive strength for a long period of time even under high temperature and low temperature conditions, is excellent in productivity, and even when a hot melt adhesive is used, the male engaging element collapses. Provide a method for fixing an automobile ceiling material to a vehicle body without causing the problem of.
  • the gist of the present invention is the following [1] to [13].
  • the male molded surface fastener is a substrate and a plurality of male molds rising from the surface of the substrate.
  • the resin having at least an engaging element and a plurality of embedded elements rising from the back surface of the substrate and constituting the male molded surface fastener is at least one selected from polyester elastomer and polyamide, and the embedded element.
  • a resin molded product with a surface fastener characterized in that the resin molded product and the male molded surface fastener are integrated by burying at least a part of the resin molded product in the resin molded product.
  • the male engaging element has a stem portion that rises from the substrate and a protruding portion that protrudes from the stem portion, and the protruding portion protrudes from the middle or the tip of the stem portion and the protruding portion.
  • the resin molded body with a hook-and-loop fastener according to the above [1], wherein the tip of the resin molded body is oblique toward the substrate.
  • a resin molded body with a surface fastener in which the male molded surface fastener having a smaller area than the resin molded body is integrated with the resin molded body having a thickness of 1.0 to 50.0 mm. Any of the above [1] to [8], wherein the end of the resin molded body does not come into contact with the end of the male molded surface fastener, and the distance between the ends is at least 5 mm or more.
  • the substrate, the male engaging element, and the embedded element are formed of the same resin composition, and the substrate is composed of a single layer, according to any one of the above [1] to [9].
  • the resin molded body with the described surface fastener is formed of the same resin composition, and the substrate is composed of a single layer, according to any one of the above [1] to [9].
  • FIG. 5 is a cross-sectional view schematically showing another embodiment of a mold having a male engaging element accommodating recess.
  • the resin molded product with a hook-and-loop fastener of the present invention is a resin molded product with a surface fastener in which a non-foamed resin molded product and a male molded surface fastener are integrated.
  • At least the resin having at least a plurality of male engaging elements rising from the front surface of the substrate and a plurality of embedded elements rising from the back surface of the substrate and constituting the male molded surface fastener is selected from polyester elastomer and polyamide. It is one type, and is characterized in that at least a part of the embedded element is embedded in the resin molded body, so that the resin molded body and the male molded surface fastener are integrated.
  • the resin molded body with a hook-and-loop fastener of the present invention has a male molded surface fastener (1) and a non-foamed resin molded body (2) integrated on the back surface side thereof. Then, in the embodiment shown in FIGS. 2 and 3, from the substrate (4), the plurality of male engaging elements (3) rising from the surface of the substrate (4), and the back surface of the substrate (4). It has a plurality of embedded elements (7) that stand up.
  • the male engaging element (3) shown in FIGS. 2 and 3 may be referred to as an “arrowhead type engaging element”.
  • the arrowhead type engaging element is in a direction in which the stem portion (5) rising from the surface of the substrate (4) intersects the row direction (10) of the male engaging element from the middle or the tip of the stem portion (5). It has a protruding portion (6) that projects symmetrically from the stem portion. In the present embodiment, the tip of the protruding portion (6) protrudes in the direction approaching the substrate (4). Further, in the present invention, as shown in FIGS. 2 and 3, it is preferable to have a ridge portion (8) formed in a ridge shape on the surface of the substrate (4), and the stem portion (5). Is preferably raised from the ridge (8). When the substrate (4) has the ridges (8), the ridges (8) are included in the substrate surface.
  • the proportion of the [poly (oxytetramethylene)] terephthalate group in the polyester elastomer used in the present invention is preferably 40 to 70% by mass, more preferably 50 to 60% by mass.
  • the ratio of the [poly (oxytetramethylene)] terephthalate group is within the above range, the strength of the male molded surface fastener can be improved while maintaining the flexibility.
  • the polyamide used in the present invention is preferably a semi-aromatic polyamide.
  • polyamide As a material for a male molded surface fastener having an inverted J-shaped engaging element described later.
  • the male engaging element formed of polyamide has high resilience, is hard to fall down, and is hard to break. Since the male engaging element formed of semi-aromatic polyamide is particularly resistant to tipping over, the total thickness of the male molded hook-and-loop fastener (the sum of the thickness of the substrate and the height of the male engaging element) can be reduced. ..
  • Semi-aromatic polyamides are usually obtained from aliphatic diamines and aromatic dicarboxylic acids or derivatives thereof. Since semi-aromatic polyamide is excellent in heat resistance and rigidity, it keeps high engagement strength even under high temperature conditions, and is suitable as an automobile member.
  • Examples of the aliphatic diamine forming the semi-aromatic polyamide include 1,6-hexanediamine, 1,8-octanediamine, 1,9-nonanediamine, 1,10-decanediamine, 1,11-undecanediamine, and 1,12. -Dodecanediamine, 2-methyl-1,5-pentanediamine, 3-methyl-1,5-pentanediamine, 2,2,4-trimethyl-1,6-hexanediamine, 2,4,4-trimethyl-1 , 6-Hexanediamine, 2-methyl-1,8-octanediamine, 5-methyl-1,9-nonanediamine and the like. From the viewpoint of preventing the male engaging element from collapsing and moldability, it is preferable to use 1,9-nonanediamine or a combination of 1,9-nonanediamine and 2-methyl-1,8-octanediamine.
  • 1,9-nonandiamine and 2-methyl-1,8-octanediamine are used in combination as an aliphatic diamine
  • the molar ratio of 1,9-nonandiamine: 2-methyl-1,8-octanediamine is 40:60 to The ratio of 95: 5 is preferable from the viewpoint of preventing the male engaging element from tipping over and engaging force.
  • an aromatic dicarboxylic acid mainly composed of terephthalic acid is preferable from the viewpoint of preventing the male engaging element from collapsing, moldability, and engaging force. Most preferably, the total amount of is terephthalic acid.
  • the semi-aromatic polyamide is an extremely rigid resin
  • the male engaging element is easily cut when the resin is pulled out from the cavity in the method of molding the inverted J-shaped engaging element described later, and the male engaging element is easily cut. Especially, cracks are likely to occur at bent points. In order to prevent this, it is preferable to add a small amount of elastomer to the semi-aromatic polyamide.
  • the resin composition for forming the male molded surface fastener may be blended with a resin other than the polyester elastomer and the polyamide, but the total content of the polyester elastomer and the polyamide in the total of the "resins" is It is preferably 60% by mass or more, more preferably 80% by mass or more, still more preferably 90% by mass or more, and even more preferably substantially 100% by mass or more.
  • the content of the resin in the resin composition constituting the male molded surface fastener is preferably 80 to 99.9% by mass, more preferably 85 to 99.9% by mass, and 90 to 99. It is more preferably 9% by mass.
  • a male molded surface fastener having an excellent engaging force can be obtained.
  • the resin composition constituting the male molded surface fastener may contain additives such as various stabilizers, flame retardants, colorants, and fillers, and it is preferable that the colorant is added. Since the resin composition constituting the resin molded product (2) described later generally contains a filler or the like in order to increase the strength, the resin molded product (2) has a white or gray color tone. Therefore, the male molded surface fastener preferably has a color tone different from that of the resin molded body (2), and specifically, it is preferably colored in black, green, blue, brown, or the like. When the male molded surface fastener (1) is colored, it becomes easier to align the male molded surface fastener attached to the back surface of the automobile ceiling material and the female molded surface fastener attached to the vehicle body. It becomes easier to prevent accidental attachment.
  • the content thereof is preferably 0.01 to 3.0% by mass, preferably 0.1 to 1.5% by mass. It is more preferable to have.
  • the content of the additive is within the above range, the effect of the additive can be sufficiently obtained, and particularly when the additive is a colorant, the male molded surface fastener can be sufficiently colored.
  • the resin molded body (2) constituting the present invention is a non-foamed resin molded body, and is integrated with the male molded surface fastener (1).
  • the non-foamable resin constituting the resin molded product (2) include at least one general-purpose hard resin selected from polypropylene, polystyrene, ABS resin, polyamide resin and the like. These resins are preferable in that a plastic plate having a hardness that does not dent at all even when pressed with a finger can be obtained.
  • polypropylene or ABS resin is more preferable as the non-foamable resin.
  • the resin molded product (2) can be easily produced by insert molding a resin composition containing the non-foamable resin as described later.
  • the resin composition constituting the resin molded product (2) may contain additives such as fillers, various stabilizers, flame retardants, and colorants in addition to the non-foamable hard resin.
  • the content thereof is preferably 10 to 65% by mass, more preferably 20 to 55% by mass, and 20 to 20 to 55% by mass. It is more preferably 50% by mass.
  • the thickness of the resin molded product (2) is preferably 1.0 to 50.0 mm, more preferably 1.5 to 30.0 mm, and further preferably 2.0 to 20.0 mm. preferable. If the thickness of the resin molded body is within the above range, the heat generated when fixing the resin molded body to the ceiling material for automobiles with the hot melt adhesive is present on the opposite side of the resin molded body (2). It is possible to prevent adverse effects on the male engaging element of. In addition, it is possible to prevent the ceiling material for automobiles from being easily disengaged when it is fitted into a fixture fixed at a predetermined position on the back surface of the ceiling material. Since the distance between the vehicle body and the ceiling material is not uniform, it is preferable to appropriately adjust the thickness of the resin molded body (2) according to the distance. By appropriately adjusting the thickness, the vehicle body and the ceiling material can be brought into close contact with each other, so that they can be engaged more strongly.
  • the male molded surface fastener having a smaller area than the resin molded body with the resin molded body having a thickness of 1.0 to 50.0 mm, and further. It is more preferable that the end portion of the resin molded body does not come into contact with the end portion of the male molded surface fastener, and the distance between the end portions is at least 5 mm or more.
  • a male molding surface fastener is integrated in a substantially central portion of the resin molded body, and a male molding surface is around the integrated male molding surface fastener. It is preferable that there is a region of the resin molded product in which the fastener is not integrated.
  • the region where the resin molded body (2) is exposed is preferably 5 to 50 mm around the male molded surface fastener, and more preferably 8 to 20 mm.
  • the male engaging element (3) constituting the present invention is intended to engage with the female engaging element to be engaged, and is, for example, as shown in FIGS. 2 and 3. It is preferable to have a stem portion (5) rising from the substrate and a protruding portion (6) protruding from the stem portion (5), and the protruding portion (6) is in the middle or at the tip of the stem portion (5). It is preferable that the tip of the protruding portion (6) is oblique in the direction of the substrate. In the present invention, it is preferable to integrally manufacture the male engaging element (3) and the male molded hook-and-loop fastener as described later.
  • the density (engagement element density) of the male engaging element (3) formed on the substrate (4) described later is preferably 30 to 70 elements / cm 2 , preferably 40 to 60 elements / cm 2 . More preferably.
  • the "density of male engaging elements” means the number (number) of engaging elements existing per unit area (1 cm 2 ) when the male molded surface fastener is viewed from directly above.
  • the height of the male engaging element from the substrate surface is preferably 1.5 to 4.0 mm, more preferably 2.2 to 3.5 mm, and 2.2 to 2.8 mm. It is more preferable to have.
  • the thickness of the male engaging element is preferably 0.2 to 1.0 mm, more preferably 0.3 to 0.8 mm.
  • the strength of the male engaging element becomes sufficient and it becomes difficult to fall down.
  • a protrusion (9) for preventing sticking is present at the tip of the stem portion (5), which will be described later.
  • the substrate (4) that supports the male engaging element (3) and the embedded element (7) is provided.
  • the thickness of the substrate (4) is preferably 0.05 to 0.50 mm, more preferably 0.10 to 0.40 mm, and even more preferably 0.15 to 0.35 mm. When the thickness of the substrate (4) is within the above range, the strength of the substrate (4) is sufficient and the thickness is not too thick, which is preferable. In the present invention, it is preferable that the substrate (4) is also manufactured integrally with the male molded surface fastener as described later.
  • the stem portion (5) is provided so as to rise from the surface of the substrate (4), and more specifically, as shown in FIGS. 2 and 3, the stem portion (5) has a ridge shape on the surface of the substrate (4). It is preferable that the ridge portion (8) formed in the ridge is provided so as to rise from the ridge portion (8).
  • the male molded surface fastener (1) and the resin molded body (2) are provided. It is possible to prevent the stem portion from being affected by the heat generated when integrally molding with), and it is possible to improve heat dissipation by increasing the surface area of the substrate.
  • the height of the stem portion (5) is preferably 1.5 to 4.0 mm, more preferably 2.0 to 3.0 mm, and preferably 2.2 to 2.8 mm. More preferred.
  • the height of the stem portion (5) is within the above range, it is easy to study the engagement element configuration for obtaining the desired performance and function, and it is easy to perform hook cutting even in the male molded surface fastener manufacturing process. The effect of stabilizing the engagement performance can be obtained.
  • the protruding portion (6) is provided in the middle or at the tip of the stem portion (5), and by providing the protruding portion (6), the engaging force is further improved.
  • the number of protrusions (6) provided in the vertical direction is 2.
  • the number is preferably three or three, and more preferably two. As shown in FIG.
  • the protruding portion (6) is preferably provided symmetrically with the stem portion interposed therebetween. More specifically, the protruding portion (6) is a direction substantially orthogonal to both the direction in which the male engaging element (3) is formed in a row and the rising direction of the male engaging element. Therefore, it is preferable that the stem portion (5) is provided so as to be symmetrical, and it is more preferable to have a total of four or more protruding portions (6). With such a configuration, it is unlikely that the loop-shaped engaging element of the engaging partner is cut or the engaging partner is split.
  • substantially orthogonal means an angle of about 90 degrees plus or minus 45 degrees, preferably about 90 degrees plus or minus 20 degrees with respect to the column direction.
  • the maximum width of one protruding portion in the stem height direction is preferably 80 to 80 to the maximum width of the other protruding portion in the stem height direction. It is 120%, more preferably 90 to 110%, and the maximum height from the substrate surface at the position of the base of one protruding portion with the stem portion is from the surface of the substrate at the position of the base of the other protruding portion with the stem portion.
  • the maximum height of the above is preferably 80 to 120%, more preferably 90 to 110%, and the protruding length from the stem portion in one protruding portion is preferably the protruding length from the stem portion in the other protruding portion. Is 80 to 120%, more preferably 90 to 110%.
  • the length of the protruding portion provided at the upper portion is shorter than the length of the protruding portion provided at the lower portion.
  • the length of the protrusion provided at the upper portion is preferably 0.15 to 0.40 mm, preferably 0.20 to 0.35 mm. Is more preferable, and 0.20 to 0.30 mm is further preferable.
  • the tip of the protruding portion (6) protrudes in the direction approaching the substrate (4).
  • the engaging force is further improved.
  • the embedded element (7) provided on the back surface of the fastener (the surface opposite to the surface on which the male engaging element exists), at least a part of the embedded element (7) is contained in the resin molded body. Since it is buried, the resin molded body and the male molded surface fastener can be integrated. As shown in FIG. 2, the embedded element (7) preferably rises from the back surface of the substrate (4) and has a bulge at the tip end portion thereof. Having the bulge makes it difficult for the male molded surface fastener to come off from the resin molded body.
  • the height of the embedded element is preferably 10 to 50%, more preferably 20 to 40% of the height of the male engaging element existing on the opposite surface. When the height of the embedded element is within the above range, the embedded element is sufficiently embedded in the resin molded body, so that the male molded surface fastener is less likely to come off from the resin molded body.
  • the ridge portion (for the purpose of suppressing the influence of the heat when integrally molding the male molded surface fastener (1) and the resin molded body (2) on the stem portion () It is preferable to provide 8).
  • the surface area of the substrate can be increased and the heat dissipation is improved.
  • the ridges are continuously present on the substrate in the row direction (the same direction as the extrusion direction of the male molded surface fastener), and the male engaging element is placed on the ridges along the row direction.
  • a tape-shaped molded product having the cross-sectional shape can be obtained by melt-extruding and cooling the resin composition for a male molded surface fastener from a nozzle having a slit similar to the cross-sectional shape of FIG.
  • the width of the tape-shaped molded product is preferably 20 to 80 mm, more preferably 30 to 60 mm.
  • the male engaging elements are not independent in the extrusion direction of the tape-shaped molded product, and the continuous convex portions for the male engaging element (hereinafter, "" It is also called a row for male engaging elements).
  • the number of rows for the male engaging element existing in the width direction of the tape-shaped molded body is preferably 3 to 8 per 1 cm of the tape width after stretching, and more preferably 4 to 6. ..
  • the embedded elements are not independent in the extrusion direction of the tape-shaped molded product, and are continuous convex portions for the embedded elements (hereinafter, also referred to as "rows for the embedded element"). As shown in FIG.
  • the row for the embedded element is between the row for the male engaging element and the row for the male engaging element adjacent thereto, and on the back surface side of the substrate (4). It is preferable to provide.
  • the embedded element preferably exists parallel to the extrusion direction of the tape-shaped molded product. By providing in this way, the tensile force applied to the male engaging element can be evenly dispersed in the resin molded body. Therefore, the number of rows for the embedded element is preferably 3 to 8 per 1 cm of the tape width after stretching, and more preferably 4 to 6. It is preferable that the number of rows for the male engaging element is the same.
  • the tip of the row for the male engaging element in the width direction of the tape-shaped molded body (preferably substantially orthogonal to the length direction of each row) in the height direction of the row. Make a cut halfway in the height direction.
  • the row strip for the buried element may or may not have a cut.
  • the ridges (8) are continuously present in the extrusion direction (row direction of the male engaging elements) of the tape-shaped molded body.
  • the interval between the cuts provided in the row for the male engaging element and, if necessary, the row for the embedded element is not particularly limited, but is preferably 0.20 to 0.60 mm, preferably 0.30. More preferably, it is ⁇ 0.55 mm.
  • the tape-shaped molded product is stretched in the length direction (extrusion direction of the tape-shaped molded product). By stretching, the cuts made in each row are widened, and the rows become a large number of independent rows of male engaging elements.
  • the draw ratio ratio of the length of the tape-shaped molded product after stretching to the length of the tape-shaped molded product before stretching
  • the ratio of the distance (mm) between the stem portions to the thickness (mm) of the stem portions is preferably 0 when the row direction of the male engaging elements is used as a reference.
  • the male molded surface fastener can be easily manufactured by the above method, but the method is not limited to this method, and the male molded surface fastener may be manufactured by another manufacturing method.
  • Another manufacturing method includes a method in which a hook-and-loop fastener having a male engaging element and a tape for an embedded element are separately molded and the surface fastener and the tape for an embedded element are joined to each other. It is not preferable because it occurs.
  • the substrate, the male engaging element and the embedded element can be formed of the same resin composition, and the substrate is made of a single layer, so that the substrate is male. Since a molded surface fastener can be obtained, there is no problem of delamination, and it is preferable from the viewpoint of productivity.
  • the male molded surface fastener of the aspect shown in FIG. 2 is preferable, but the male molded surface fastener of a different aspect can also be adopted.
  • the male molded surface fastener of a different aspect can also be adopted.
  • it rises from the substrate, gradually narrows from the root to the tip without branching in the middle or at the tip, and bends in the same direction as the row direction of the male engaging element from the middle.
  • a male engaging element hereinafter, also referred to as an “inverted J-shaped engaging element” having a shape close to the surface of the substrate can be adopted as the tip.
  • a molten resin preferably a molten polyamide, more preferably a molten semi-aromatic polyamide is poured into a sheet on the surface of a metal roll provided with a large number of male engaging element-shaped cavities on the surface, and the molten resin is melted in the cavity.
  • a method is used in which a resin is press-fitted, the sheet is peeled off from the metal roll surface after solidification, and at the same time, the male engaging element is pulled out from the cavity to produce a resin sheet having a large number of male engaging elements on the surface.
  • the embedded element on the back surface side of the substrate (24) is placed in a cavity provided on the surface of the metal roll in contact with the back surface of the molten resin sheet at the time of molding the above-mentioned male engaging element. It can be provided by press-fitting the molten resin and pulling out the embedded element from the cavity when the sheet is peeled off from the metal roll surface after solidification.
  • a ring-shaped mold with a thickness of 0.2 to 0.5 mm in which multiple cavities having an inverted J-shape are carved along the outer circumferential direction.
  • Metal ring with no carved cavity A ring-shaped mold having a thickness of 0.2 to 0.5 mm in which a plurality of cavities having an inverted J-shape bent in the opposite direction to the above-mentioned inverted J-shape are carved along the outer circumferential direction.
  • a ring-shaped mold having an inverted J-shaped cavity and a ring-shaped mold having an inverted J-shaped cavity facing in the opposite direction are overlapped one by one. Two or more may be overlapped.
  • a male molded surface fastener can be obtained by casting a molten resin, for example, a molten polyamide, preferably a molten semi-aromatic polyamide, on the surface of a metal roll. Sink molding is The molten resin is extruded into a gap between the metal roll and another drum roll arranged at a position opposite to the metal roll. By pressing the molten resin, the cavity is filled with the molten resin and a sheet of the molten resin having a uniform thickness is formed on the roll surface.
  • a molten resin for example, a molten polyamide, preferably a molten semi-aromatic polyamide
  • the molten resin in the cavity is cooled and solidified by a refrigerant constantly circulating in the roll, and a sheet of the molten resin can be obtained by using a nip roller with a gap adjusted.
  • Stretch the substrate of the male molded hook-and-loop fastener to a uniform thickness The cooled and solidified sheet is peeled off from the surface of the mold roll, and the male engaging element is pulled out from the cavity.
  • a molded hook-and-loop fastener having a large number of male engaging elements on the surface can be obtained.
  • the male engaging element becomes thinner from the root to the tip (that is, the root becomes thicker and becomes thinner as it approaches the tip), and gradually bends from the middle, and the tip faces toward the substrate surface.
  • Multiple male engaging elements that are bent in the same direction are lined up in a row in the direction of bending.
  • One or more rows of male engaging elements and one or more rows of male engaging elements that are bent in opposite directions are alternately arranged.
  • the width of the top of the inverted J-shaped engaging element is larger than the thickness. That is, as shown in FIG. 4, it is preferable that the width (W) at the top of the male engaging element is larger than the thickness (S), that is, W> S.
  • the height (H) of the inverted J-shaped engaging element from the substrate surface is preferably 0.35 to 1.5 mm, more preferably 0.6 to 1.3 mm, and the spread (C) at the base is preferably 0. It is 7. to 1.5 mm, more preferably 0.8 to 1.3 mm, and the C / H ratio is preferably 0.6 to 1.2, more preferably 0.65 to 1.0.
  • the base of the inverted J-shaped engaging element is thick, the tip is thin, and the height is low in terms of the difficulty of the inverted J-shaped engaging element from tipping over, and further in terms of engaging force.
  • the spread (D) at 2/3 of the height (H) from the base is 0.15 to 0.4 mm, and the inverted J-shaped engaging element is 1/2 to 3/3 of the height from the base. It is preferable that the vehicle gradually starts to bend from the vicinity of 4.
  • the width (W) at the top of the male engaging element shown in FIG. 4 is preferably 0.2 to 0.4 mm.
  • the width (W) may be the same from the base of the male engaging element to the tip, or may be narrower toward the tip. For example, when the ring-shaped mold described above is used, the width (W) is inevitably substantially the same from the base to the tip.
  • the thickness (S) at the top of the male engaging element is preferably 0.15 to 0.35 mm and smaller than the width (W). In the male molded surface fastener shown in FIG. 4, the individual male engaging elements are not branched on the way to the tip or at the tip. As a result, it is possible to prevent the male engaging element from being cut when it is pulled out from the cavity.
  • the thickness (T) of the substrate of the male molded surface fastener having the inverted J-shaped engaging element is 0.1 to 0.3 mm in that it has flexibility and strength along the curved surface.
  • the density of the inverted J-shaped engaging elements present on the substrate is preferably 60 to 160 elements / cm 2 , and more preferably 80 to 140 elements / cm 2 .
  • a plurality of male engaging elements bent in the same direction form a row in the same direction as the bent direction. Lined up. Further, a plurality of male engaging elements that are bent in the opposite direction to the above may be arranged in another row in the same direction as the bending direction.
  • the distance (E) between two adjacent male engaging elements in the same row is preferably 1.2 to 2.2 mm, more preferably 1.3 to 1.8 mm. That is, the male engaging element is preferably present at a ratio of one in a length of 1.2 to 2.2 mm in the row direction, and more preferably at a ratio of one in a length of 1.3 to 1.8 mm.
  • male molding surface fastener accommodating recess a recess having the same size as the substrate of the male molding surface fastener (hereinafter referred to as "male molding surface fastener accommodating recess") is provided in the mold, and the male molding surface fastener accommodating recess is male-molded.
  • a non-foamable resin liquid is injected into the mold and further cool and solidify it (preferably manufactured by a so-called insert molding method).
  • FIG. 5 shows a portion of the male forming surface fastener accommodating recess corresponding to the row of the male engaging element of the male forming surface fastener.
  • the automobile ceiling material with the surface fastener thus obtained can be fixed to the vehicle body by engaging with the female surface fastener attached to the vehicle body body.
  • the obtained male molded surface fastener was cut into a size of 20 mm in length and 40 mm in width in the direction of the male engaging element row.
  • the male engaging element of the male molding surface fastener was inserted without a gap so as to be accommodated in the male engaging element accommodating recess provided in the male molding surface fastener accommodating recess in the mold.
  • a polypropylene melt containing 40% by mass of talc as a filler (a melt of the resin composition constituting the resin molded product (2)) was injected into the mold, cooled, and then taken out from the mold.
  • the male engaging element accommodating recess had the same width as one row of male engaging elements formed on the male molding surface fastener.
  • Example 2 A resin molded product with a hook-and-loop fastener manufactured in Example 1 was used on the back surface of an automobile ceiling material similar to that used in Example 1, and a hot melt resin (olefin-based reactive hot melt adhesive [Hitachi Kasei Polymer Hybon]. 9955]) was attached by adhesion.
  • the hot melt resin liquid melted at 200 ° C. using an olefin hot melt adhesive is the surface of the resin molded body with the hook-and-loop fastener on which the male molded surface fastener exists. It was applied to the opposite surface and attached to the back surface of the automobile ceiling material.
  • this male molded surface fastener was cut out to a size of 20 mm in length and 40 mm in width in the same manner as in Example 1, and set in the same mold as in Example 1 by the same method.
  • the same polypropylene melt as in Example 1 was injected into the mold for molding, and then cooled and taken out.
  • the polypropylene resin plate with the hook-and-loop fastener was fitted to the automobile ceiling material by fitting it into the aluminum fixture fixed to the back surface of the automobile ceiling material.
  • Example 2 Similar to Example 1, a portion to which a resin molded body with a hook-and-loop fastener for comparison is attached is cut out from the obtained ceiling material for an automobile, and is engaged with the polyester woven surface fastener. Various tests similar to Example 1 were performed. The results are shown in Tables 1 and 2 below.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Slide Fasteners, Snap Fasteners, And Hook Fasteners (AREA)
PCT/JP2020/020117 2019-05-21 2020-05-21 面ファスナー付の樹脂成形体、その製造方法、及び車体に自動車用天井材を固定する方法 Ceased WO2020235633A1 (ja)

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JP2021520844A JPWO2020235633A1 (https=) 2019-05-21 2020-05-21
US17/610,464 US11992098B2 (en) 2019-05-21 2020-05-21 Hook-and-loop fastener-equipped resin molded body, method for manufacturing same, and method for fixing automobile ceiling material to vehicle body
CN202080037766.0A CN113874255B (zh) 2019-05-21 2020-05-21 带面固定件的树脂成型体、其制造方法和将汽车用顶棚材料固定于车体的方法
EP20810601.3A EP3973811A4 (en) 2019-05-21 2020-05-21 VELCRO FASTENED RESIN MOLDING, METHOD OF MANUFACTURING SAME AND METHOD OF ATTACHING CAR COVERS MATERIAL TO A CAR BODY

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KR102236930B1 (ko) * 2019-11-21 2021-04-07 현대트랜시스(주) 무봉제형 벨크로용 접착테이프 및 이를 이용한 차량용 시트 패딩재의 제조방법
DE102020121313A1 (de) * 2020-08-13 2022-02-17 Webasto SE Dachanordnung mit Himmelelement

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JP7476839B2 (ja) 2021-04-07 2024-05-01 トヨタ車体株式会社 車両の内装部品

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US20220218074A1 (en) 2022-07-14
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