METHOD FOR FORMING A RUBBER LAYER ON A SURFACE OF A RESIN BODY OF A ZIPPER DOWEL LINK AND RUBBER LAYER ON A RESIN STRUCTURE OF A ZIPPER DOWEL LINK, A RESIN ZIPPER, A RESIN CLOSURE AND A RESIN SNAP BUTTON

Abstract

Method for forming a rubber layer (3) on a surface of a resin material body of a zipper coupling link (1), wherein the method comprises: first, applying a coating material to the surface of the resin body of the dome member (1) to form a coating layer (2), using a coating material to which a pigment has been added, wherein the pigment in the coating material for forming the coating layer has a weight percentage of 10% to 30%, and wherein the coating layer (2) has a surface roughness of 2 µm to 7 µm, and then rubber coating to form a rubber layer (3) on the paint layer.

Description

BACKGROUND Technical area

[0001] The disclosure relates to a surface treatment technique for a resin material, and in particular to a method for forming a rubber layer on a surface of a resin material body of a dome member, as well as to a rubber layer on a resin material structure of a zipper dome member, a resin zipper, a resin buckle and a resin snap fastener. State of the art

[0002] Fasteners (such as zippers, clasps, and snaps) used in everyday life are primarily made of resin materials. To maintain their durability, hard plastic is generally used. As a result, these fasteners have harder surfaces, which negatively affects how they feel on the hand. If some of these harder surfaces come into direct contact with human skin, they can cause pain.

[0003] A common solution is to apply a rubber coating to the surface of the resin material, so that the resulting additional rubber layer can create a soft feel on the hand and cause no pain, even upon direct contact with human skin. However, it is difficult to adhere a rubber coating to a resin surface, and resin materials typically have relatively smooth surfaces. Therefore, it is common practice to apply a primer to the resin surface before applying the rubber coating. However, for items such as zippers, clasps, and snap fasteners, comparisons have shown that the rubber coating applied using the aforementioned methods is still likely to peel off.

[0004] DE 196 43 861 discloses a method for manufacturing a water- and gas-tight zipper.

[0005] CN 108 024 602 A discloses a method for forming a rubber layer on the surface of a polyester resin tape. Rubber-coated objects are also known in other technical fields, see e.g. CN 202 145 716 U (handles of electrical appliances) or JP 2000-43199 A (laminate as a seam sealant).

[0006] US patent 2002 / 0119 314 A1 discloses vulcanized rubber particles with a polyester protective layer for use as safety surfaces or mulch. SUMMARY

[0007] The disclosure provides a method for forming a rubber layer on a surface of a resin body of a zipper dome link, as well as a rubber layer on a resin structure of a zipper dome link, on a resin zipper, on a resin buckle and on a resin snap fastener, to solve the conventional problem that the rubber coating on the resin surface is likely to fall off.

[0008] The disclosure provides a method for forming a rubber layer on the surface of a resin body of a zipper coupling member according to claim 1. In the method, a coating is first applied to the surface of the resin body of the zipper coupling member using a coating material to which a pigment has been added, in order to form a coating layer; then a rubber coating is carried out to form a rubber layer on the coating layer.

[0009] The resin material is a hard plastic. In particular, the resin material can be polybutylene terephthalate (PBT) or nylon. In a specific example of the disclosure, the rubber layer is applied to a PBT surface. The method of the disclosure is also applicable to nylon.

[0010] The coating material can be oil-based or water-based. It can be selected from various common coating materials, including but not limited to epoxy resin coatings, acrylic urethane coatings, acrylic melamine coatings, polyurethane coatings, alkyd resin coatings, acrylic coatings, chlorinated olefin coatings, polyurea elastomer coatings, organosilicon resin coatings, polysiloxane coatings, fluorine-containing polymer coatings, unsaturated polyester resin coatings, vinyl ester coatings, polyaniline coatings, etc.

[0011] The pigment in the coating material, used to form the coating layer, comprises 10% to 30% by weight. For example, the pigment may have a weight percentage of 10% to 15%, 15% to 20%, 20% to 25%, or 25% to 30%, and specifically 10%, 11%, 12%, 13%, 14%, 15%, 16%, 17%, 18%, 19%, 20%, 21%, 22%, 23%, 24%, 25%, 26%, 27%, 28%, 29%, or 30%. Since the pigment dissolves poorly in the coating material when its proportion exceeds 30%, it is less likely that the coating can be applied successfully. If the proportion of pigment is less than 10%, the surface with the coating will have a reduced surface roughness.

[0012] The pigment is a color pigment and can be either inorganic or organic. Depending on its function, the pigment in the coating can be classified as a rust-inhibiting pigment, a color pigment, a filler / extensifier, or a functional pigment. The color pigment is generally used to color and coat the surface of an object. The color pigment exhibits good color strength and opacity. The color pigment used in the disclosure process can be any of the various existing color pigments.Examples include chrome yellow, antimony yellow, iron oxide yellow, cadmium yellow (CdS), Hansa yellow, benzidine yellow, chrome oxide green, chrome green, iron blue, ultramarine blue, iron red (iron oxide red), cadmium red, molybdenum red, iron oxide black, aluminum powder (commonly known as silver powder), copper powder (commonly known as gold powder), zinc oxide, lithopone, titanium white, antimony white, lead white, carbon black, graphite, aniline black, etc. According to the invention, after the color pigment and the selected coating material have been mixed together in a predetermined ratio, the coating layer obtained by the coating has a surface roughness of 2 µm to 7 µm. For example, the surface roughness can be 2 µm to 3 µm, 3 µm to 4 µm, 4 µm to 5 µm, 5 µm to 6 µm, or 6 µm to 7 µm. Based on the aforementioned standard, a person skilled in the art can confirm the compatibility of the pigment and the coating material through simple experiments.In a specific example from the Book of Revelation, soot is used.

[0013] In conventional paints, the proportion of color pigment is typically lower, generally 2% or less, and generally not higher than 5%. Therefore, conventional paints cannot meet the roughness requirement and thus cannot be satisfactorily applied to the disclosure.

[0014] According to some embodiments, the coating layer can have a thickness of 30 µm to 50 µm, e.g. 30 µm to 35 µm, 35 µm to 40 µm, 40 µm to 45 µm or 45 µm to 50 µm; according to some embodiments, the thickness of the coating layer is 30 µm.

[0015] In the revelation, the coating material used in the coating layer is described as a primer.

[0016] According to some embodiments, the rubber layer can have a thickness of 5 µm to 20 µm, e.g. 5 µm to 10 µm, 10 µm to 15 µm or 15 µm to 20 µm; according to some embodiments, the thickness of the rubber layer is 10 µm.

[0017] Regarding the rubber layer formed on the surface of the resin material using the disclosed process, the surface roughness of the coating layer is increased, and its adhesion to the rubber layer is improved, since the pigment has been added to the coating material to form the coating layer. Thus, the rubber layer is more firmly fixed and less likely to detach. Regardless of whether the coating material is oil-based or water-based, a solvent component of the coating material evaporates after drying, ultimately forming a film. Therefore, both oil-based and water-based coating materials are suitable for use in the disclosed process. The proportion of pigment is adjusted to achieve a suitable surface roughness.

[0018] The disclosure further provides a rubber layer on a resin material structure of a zipper coupling link with a resin material body. On a surface of the resin material body, a coating layer and a rubber layer are successively formed from the inside out, and a coating material for forming the coating layer contains a pigment, wherein the pigment in the coating material for forming the coating layer comprises 10% to 30% by weight, and wherein the coating layer has a surface roughness of 2 µm to 7 µm.

[0019] The coating layer can cover the surface of the resin body completely or partially. The rubber layer can cover the coating layer completely or partially. According to some embodiments, the coating layer is applied wherever it is covered by the rubber layer and between the rubber layer and the resin body.

[0020] The disclosure further provides a rubber layer on a resin zipper with a carrying strap, a coupling element, and a slider. The coupling element has a resin body, wherein a coating layer and a rubber layer are successively formed on a surface of the resin body of the coupling element from the inside out, and a coating material for forming the coating layer contains a pigment, wherein the pigment in the coating material for forming the coating layer comprises 10% to 30% by weight, and wherein the coating layer has a surface roughness of 2 µm to 7 µm.

[0021] The coating layer and the rubber layer can be formed on all or part of the outer surface of the dome member. According to some embodiments, the coating layer and the rubber layer are formed on all or part of the outer surface of the dome member that may come into contact with the human body or a limb.

[0022] The disclosure further provides a rubber layer on a resin snap fastener. On an outer surface of the resin snap fastener, a coating layer and a rubber layer are successively formed from the inside out, and a coating material for forming the coating layer contains a pigment, wherein the pigment in the coating material for forming the coating layer comprises 10% to 30% by weight, and wherein the coating layer has a surface roughness of 2 µm to 7 µm.

[0023] The resin snap fastener comprises a male part and a female part, both of which have a cap. In the resin snap fastener, the coating layer and the rubber layer are formed on at least the entire surface or a portion thereof of the cap's surface.

[0024] The disclosure further provides a rubber layer on a resin clasp. On an outer surface of the resin clasp, a coating layer and a rubber layer are successively formed from the inside out, and a coating material for forming the coating layer contains a pigment, wherein the pigment in the coating material for forming the coating layer comprises 10% to 30% by weight, and wherein the coating layer has a surface roughness of 2 µm to 7 µm.

[0025] The resin clasp comprises a male part and a female part. The male part has an elastically deformable leg section, and the female part has a main body into which the leg section of the male part can be inserted. The coating layer and the rubber layer are formed at least on the entire surface or on part of an outer surface of the main body of the female part.

[0026] The rubber layer formed on the surface of the resin material using the method disclosed is more firmly fixed and less likely to fall off. BRIEF DESCRIPTION OF THE DRAWINGS Fig. Figure 1 is a schematic view of a structure of the disclosure in which a rubber layer is formed on a surface of a resin material. Fig.Figure 2 is a view of a first type and a second type of zipper according to an embodiment of the disclosure above. Fig. Figure 3 is a cross-sectional view of the first type of zipper according to an embodiment of the disclosure. Fig. Figure 4 is an enlarged view of section 511d of a dome element of Fig. 3. Fig. Figure 5 is a cross-sectional view of a second type of zipper according to an embodiment of the disclosure. Fig. Figure 6 is an enlarged view of section A of a dome element of Fig. 5. Fig. Figure 7 is a cross-sectional view of a third type of zipper according to an embodiment of the disclosure. Fig. Figure 8 is a schematic view of an engagement state of a coupling element of the third type of zipper according to an embodiment of the disclosure. Fig.Figure 9 is a schematic view of the dome element of the third type of zipper according to an embodiment of the disclosure. Fig. 10 is an enlarged view of section B of the dome element of Fig. 9. Fig. Figure 11 is a view of the third type of zipper according to an embodiment of the disclosure above. Fig. Figure 12 is a schematic view of a slider of a zipper according to an embodiment of the disclosure. Fig. Figure 13 is a schematic view of a lower shield of the slide. Fig. Figure 14 is a cross-sectional view of a push button according to an embodiment of the disclosure. Fig. Figure 15 is a schematic view of a matrix part of a clasp according to an embodiment of the disclosure. Fig.Figure 16 is a schematic view of a matrix part of a clasp according to an embodiment of the disclosure. Fig. Figure 17 is a schematic view of a closed state of the matrix part and the male part of the clasp according to an embodiment of the disclosure. DESCRIPTION OF THE EXECUTION FORMS

[0027] The embodiments of the disclosure are described below by means of specific examples. The person skilled in the art will readily understand the additional advantages and effects of the disclosure according to the content disclosed in this description. The disclosure can be further realized or applied through additional different embodiments. The details in this description can also be modified or adapted in various ways based on different perspectives and applications without departing from the core of the disclosure.

[0028] It should also be noted that the structures, dimensions, and sizes shown in the accompanying drawings serve only to illustrate the content disclosed in the description so that they can be understood and interpreted by a person skilled in the art, and are not intended to restrict the conditions for carrying out the disclosure. Therefore, they have no essential technical significance. Any modification of the structure, change in dimensions, or adjustment of size shall fall within the scope of protection of the technical content disclosed by the disclosure, without affecting the effects and objectives produced by the disclosure.Meanwhile, expressions such as "upper", "lower", "left", "right", "middle", "one" and similar, as used in this description, serve only to clarify the description and not to limit the scope of protection of the disclosure, and any modification or adaptation of the relative relationships shall also fall within the scope of protection of the disclosure without substantially altering the technical content. Example 1

[0029] A rubber layer was formed on the surface of a resin material using the following steps: 1) Creating a primer: A pigment was added to a common primer and then mixed evenly so that the weight percentage of the pigment in the coating was 10% to 30%.

[0030] Tests have shown that the pigment content should be at least 10% to ensure stronger bonding of the rubber layer. However, if the pigment content exceeds 30%, workability is reduced because it becomes difficult to mix the pigment evenly with the coating. The primer can be oil-based or water-based. Examples include epoxy resin coatings, acrylic urethane coatings, acrylic melamine coatings, polyurethane coatings, alkyd resin coatings, acrylic coatings, chlorinated olefin coatings, polyurea elastomer coatings, silicone resin coatings, polysiloxane coatings, fluorine-containing polymer coatings, unsaturated polyester coatings, vinyl ester coatings, polyaniline coatings, and so on. The pigment can be selected from a variety of existing color pigments.Examples include chrome yellow, antimony yellow, iron oxide yellow, cadmium yellow (CdS), Hansa yellow, benzidine yellow, chrome oxide green, chrome green, iron blue, ultramarine blue, iron red (iron oxide red), cadmium red, molybdenum red, iron oxide black, aluminum powder (commonly known as silver powder), copper powder (commonly known as gold powder), zinc oxide, lithopone, titanium white, antimony white, lead white, carbon black, graphite, aniline black, etc. A resistance test of the rubber layer was carried out using carbon black as the pigment and an epoxy resin coating as the primer. 2) The primer was applied to the surface of the resin material and then dried for approximately 6 minutes to form a coating layer. The coating layer, once dry, had a thickness of approximately 30 µm to 50 µm. The resin material can be various types of hard plastic, and a polybutylene terephthalate (PBT) material was used for the rubber layer resistance test. 3) Rubber was applied to the surface of the coating layer using a conventional method and then dried for approximately 6 minutes to form a rubber layer. The rubber layer material can be selected from various conventional rubber types, such as chlorosulfonyl polyethylene rubber (CSM), acrylonitrile butadiene rubber (NBR), chloroprene rubber (CR), styrene butadiene rubber (SBR), natural rubber (NR), etc. The rubber layer, after drying, had a thickness of approximately 5 µm to 20 µm.

[0031] After the rubber layer, as it is in Fig. As shown in Figure 1, a coating layer 2 and a rubber layer 3 are successively applied to a resin material 1. Method for determining the roughness of the coating layer

[0032] The coating material was applied to a flat plate. The coating thickness was then measured using a micrometer with a probe having a tip radius of 10 µm or less. Ten points were randomly selected for measurement (to prevent the coating thickness from dropping due to probe movement and to distinguish it from a conventional method where a detector moves in a predetermined direction), and the maximum and minimum values ​​(unit: µm) were obtained. The above procedure was repeated five times, and an average value was calculated.

[0033] Experimental method for determining the resistance to the rubber layer falling off: The paint layer and the rubber layer were applied to the upper surface of a zipper dome link using the method described above. The zipper was sewn to a fabric and then washed five times in a washing machine with water. Comparative example:

[0034] The same steps as above were performed, except that no pigment was added to the paint. Experimental results: Experiment Example proportion of the pigment roughness Result of washing with water 1 10% 2 µm no falling off 2 20% 2,2 µm no falling off 3 30% 7 µm no falling off Comparative example 0 1 µm or less partially fallen off

[0035] The Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, Fig. 10, Fig. 11, Fig. 12, Fig. 13, Fig. 14, Fig. 15, Fig. 16 to Fig.Figure 17 describes embodiments of a zipper, a snap fastener, and a clasp in which the rubber layer is formed on the surface of the resin material using the method disclosed. In the zipper, snap fastener, and clasp of these embodiments, the coating layer contains the pigment.

[0036] Fig.Figure 2 shows an embodiment of the resin zipper of the disclosure. The resin zipper comprises a pair of support straps 4, a row of coupling links 5, and a slider 6. The row of coupling links 5 is arranged at opposite edges of the support straps 4 and has a plurality of continuously arranged coupling links. The slider 6 for connecting or disconnecting the coupling links is arranged on the row of coupling links 5. As the slider 6 moves longitudinally along the row of coupling links 5, the coupling links on one of the support straps 4 connect to or disconnect from the coupling links on the other support strap 4.

[0037] To improve tactile feel and sensitivity, a coating layer and a rubber layer are successively formed on a surface of the dome member or slide 6 using the method of disclosure. The coating layer and the rubber layer can be formed on all or part of an exposed surface of the dome member or slide 6. According to some embodiments, the coating layer and the rubber layer are formed at least on a surface of a region of the dome member or slide 6 that may contact a body or limb.

[0038] In one embodiment, as described in Fig. 3 and Fig.As shown in Figure 4, a core part 41 is arranged at the edge of the support belt 4, with the dome member row 5 attached to the core part 41. The core part 41 arches upwards and downwards relative to the remainder of the support belt 4 and extends along the edge of the support belt 4. A dome member 51 is attached to the core part 41. The dome member 51 has an upper section 511 and a lower section 512, the upper section 511 of the dome member 51 being arranged above the support belt 4 and the lower section 512 of the dome member 51 being arranged below the support belt 4. A surface of the upper section 511 of the dome member 51 has a top surface and a side surface 511c, the top surface being able to have a flat section 511a and an inclined section 511b that slopes downwards.During operation of the zipper, it is most likely that the flat section 511 of the upper surface of the upper section 511 of the dome member 51 will contact the body or a limb. Therefore, the coating layer 2 and the rubber layer 3 can be arranged at least on the flat section 511a on the upper surface of the upper section 511 of the dome member 51. Furthermore, the coating layer 2 and the rubber layer 3 can also be arranged, for example, on a chamfered section 511e that connects the upper surface with the side surface 511c of the upper section 511 of the dome member 51, or on a chamfered section 511d that connects the flat section 511a with the inclined section 511b on the upper surface of the upper section 511 of the dome member 51.

[0039] In another embodiment, as described in Fig. 5 and Fig.As shown in Figure 6, a surface of an upper section 521 of a dome member 52 has an upper surface 521a and a side surface 521b, the upper surface 521a being a plane. During operation of the zipper, it is most likely that the upper surface of the upper section of the dome member with such a structure will contact the body or a limb. Therefore, the coating layer 2 and the rubber layer 3 can be arranged at least on the upper surface 521a of the upper section 521 of the dome member 52. Furthermore, the coating layer 2 and the rubber layer 3 can also be arranged on a chamfered section 521c that connects the upper surface 521a with the side surface 521b of the upper section 521 of the dome member 52.

[0040] In another embodiment, as described in the Fig. 7, Fig. 8, Fig. 9, Fig. 10 to Fig.As shown in Figure 11, a dome member 53 is attached to one side of the support strap 4. The dome member 53 has a ring shape, comprising an upper leg section 531, a lower leg section 532, a connecting section 533, and an engagement section 534. The connecting section 533 and the engagement section 534 are connected at both ends to the upper leg section 531 and the lower leg section 532, respectively, thus forming the ring shape. The lower leg section 532 is located near the support strap 4. The engagement section 534 is opposite the dome member 533 of the support strap on the other side. The dome member 53 is attached to one side of the support strap 4 by a thread-like fastening element 535. The thread-like fastening element 535 can be a sewing thread, a knitting thread, or the like. A center line 536 extends longitudinally through the dome member 533 along the zipper.During use of the dome member with such a structure, it is most likely that an exposed section (in particular, an upper surface of the upper leg section) of the dome member will contact the body or a limb. Therefore, the coating layer 2 and the rubber layer 3 can be arranged on a surface of the dome member 53 that is different from an area attached to the support strap 4. For example, the coating layer 2 and the rubber layer 3 can be arranged at least on the upper surface of the upper leg section 531 of the dome member 53.

[0041] An upper limiting part 7 and a lower limiting part 8 can further be arranged accordingly at both ends of the support belt 4 in the longitudinal direction in order to limit the range of movement of the slider 6.

[0042] The Fig. 12 and Fig.Figure 13 represents a slider of a zipper according to one embodiment. The slider 6 has an upper plate 61, a lower plate 62, a slider wedge 63 connecting the upper plate 61 to the lower plate 62, and a fastening rod 64 for attaching a pull tab. In the case of a resin zipper, the slider 6 can be made of resin or metal. During operation of the zipper, the lower plate 62 of the slider 6 is most likely to come into contact with the body or a limb. Particularly when the slider 6 is made of metal, the lower plate 62 is likely to produce a sensation of cold when in close proximity to the skin. Therefore, the coating layer and the rubber layer can be arranged at least on the lower plate 62 of the slider 6 to prevent such a sensation of cold. Furthermore, the coating layer and the rubber layer are formed at least on a lower surface of the lower plate 62.

[0043] Fig.Figure 14 represents a resin snap fastener of the disclosure, comprising a male part 9 and a female part 10. The male part 9 has an insertion pin 91 and a cap 11. The female part 10 has a receiving box 101 and the cap 11. A projecting insertion section 111 for snapping into place is provided in the center of the cap 11. A hole through which the insertion section 111 can be inserted for snapping into place is provided in the center of the insertion pin 91 and the receiving box 101. The insertion pin 91 and the receiving box 101 have mating engagement sections 92 and 102, respectively. When the mating engagement sections 92 and 102 are in engagement with each other, a small deformation may occur, which then recedes. The matrix part 10 and the matrix part 9 are snapped together in a free state by a mutual resistance force between the engagement sections 92 and 102.During use, a fabric 12 is clamped between the insertion pin 91 and the cap 11 of the male part 9, and the fabric 12 is clamped between the receiving box 101 and the cap 11 of the female part 10. Once the insertion pin 91 and the receiving box 101 are positioned opposite each other, the caps 11 of the female part 10 and the male part 9 are pressed together to snap the female part 10 and the male part 9 together. When the snap fastener is used, an outer surface of the cap 11 will, in most cases, contact the body or a limb. Therefore, according to some embodiments, the coating layer (not shown) and the rubber layer (not shown) are formed at least on the outer surface of the cap 11. During use, an inner side surface of the cap 11, the insertion pin 91 and the receiving box 101 generally do not touch the body or a limb.Therefore, there is no need to apply the paint layer and the rubber layer to them.

[0044] The Fig. 15, Fig. 16 to Fig. Figure 17 schematically represents an embodiment of a resin clasp with a male part 13 and a female part 14.

[0045] The matrix part 13 has a base section and a pair of leg sections 132, which are elastically deformable relative to each other, with one end of the leg sections 132 connected to the base section. The base section has a strap attachment section 131. The strap attachment section 131 has a frame 131a and a connecting rod 131b, which divides the frame 131a into two sections in the front-to-back direction. During use, a strap-shaped accessory can be looped around the connecting rod 131b and pulled down from the frame 131a, thus allowing the actual length of the strap-shaped accessory to be adjusted. The frame 131a of the strap attachment section 131 can have a polygonal shape, e.g., a square, a pentagon, or the like.During use, it is particularly likely that an outer surface of the frame 131a of the base section will come into contact with the body or a limb. Therefore, the paint layer and the rubber layer can be arranged on the outer surface of the frame 131a. For example, the paint layer (not shown) and the rubber layer (not shown) can be applied to an outer side surface and a top surface of the frame 131a of the base section. It is not necessary to apply the paint layer and the rubber layer to an inner surface of the frame 131a. The paint layer and the rubber layer can optionally be applied to the connecting rod 131b.

[0046] The base section further comprises a projecting section 133. A base section 133a of the projecting section 133 is located on one side of the frame 131a closer to the leg section 132. A main body of the projecting section 133 is positioned between the leg sections 132 of the pair. When no external force is applied, the main body of the projecting section 133 does not touch the leg section 132. The projecting section 133 is designed to allow room for movement of the leg section 132 and also to prevent excessive deformation of the leg section 132. The projecting section 133 generally does not touch the body or a limb, and it is not necessary to apply the paint layer and the rubber layer to the projecting section 133.

[0047] The leg section 132 has an elastic element extending along the direction in which the male part 13 is inserted into the female part 14. The elastic element can have one or more elastic parts. Under the influence of an external force, the elastic part can be elastically deformed by approaching the projecting section 133. The leg section 132 has a curved section 132b that is convex outwards. When the leg section 132 is inserted into the female part 14, a side wall of a guide recess 141 in the female part 14 can exert an inward pressure on the curved section 132b to allow elastic inward deformation of the leg section 132.To separate the male part 13 and the female part 14, a user can apply an inward external compressive force to the exposed curved section 132b, causing both leg sections 132 to move inward toward each other. By applying a pushing or pulling force that causes the male part 13 to retract, the male part 13 and the female part 14 can be separated. Furthermore, an engagement section 132a can be arranged at a free end of the leg section 132 to engage with and be brought into contact with an engagement section 142a of the female part 14. The curved section 132b of the leg section 132 of the matrix part 13 can also be exposed and can be used as an operating section for releasing and separating the matrix part 14 and the matrix part 13 from each other.Therefore, according to some embodiments, the coating layer and the rubber layer can be applied to an outer side surface of the curved section 132b.

[0048] The die part 14 of the resin buckle has a housing-shaped main body, one end of which has an insertion opening 142 that allows the insertion of the pair of leg sections 132 of the male part 13. A rim shape of the insertion opening 142 should fit a rim shape of the frame 131a of the base section of the male part 13 opposite the die part 14 to provide a smooth transition between the outer surface of the die part 14 and the male part 13 when the die part 14 and the male part 13 are joined, and to ensure a better connection. A strap attachment hole 143 and a connecting rod 144 are arranged at the other end of the main body of the die part 14. The band mounting hole 143 and the connecting rod 144 can be used to attach and fix the band-shaped accessory.The guide recess 141 is located in the main body of the matrix part 14 and allows the leg section 132, sliding through it, to be elastically deformed inwards. The guide recess 141 is located near the insertion opening 142. An opening section 145 is located on the left and right side walls of the main body of the matrix part 14, near a distal end of the guide recess 141. The opening section 145 serves to reshape the leg section 132. The combination of the guide recess 141 and the opening section 145 enables the entire process, from elastic inward deformation to the restoration of the leg section 132, to be carried out. When the curved section 132b of the leg section 32 has reached the opening section 145, the leg section 132 bends back because the inward pressure disappears.

[0049] Furthermore, an engagement section 142a can be arranged on the main body of the matrix part 14 to align with the engagement section 132a of the leg section 132 of the male part 13. Generally, the positions of the engagement sections align where the engagement sections are positioned after the matrix part 13 and the male part 13 have been attached and fixed, thus ensuring a more stable fit between the matrix part 14 and the male part 13.

[0050] Since an outer surface of the main body of the matrix part 14 is likely to contact the body or a limb during operation, the paint layer and the rubber layer can be applied to the outer surface of the main body of the matrix part 14. Since it is less likely that an inner surface of the main body of the matrix part 14 will contact the body or a limb during operation, there is no need to apply the paint layer and the rubber layer to the inner surface of the main body of the matrix part 14.

[0051] The examples mentioned above serve to illustrate the disclosed embodiments of the disclosure and should not be interpreted as limiting the disclosure. Furthermore, the various modifications, processes, and compositions of the disclosure listed here will be obvious to the person skilled in the art without altering the scope and content of the disclosure. Although the disclosure has been specifically described with reference to several concrete examples, it should be noted that the disclosure is not limited to these concrete examples. In fact, various modifications, obvious to the person skilled in the art, such as those described above to preserve the disclosure, should be included within the scope of the disclosure. List of reference symbols 1 Resin material 2 coats of paint 3 rubber layers 4 Carrying strap 5 coupling link row 6 sliders 7 upper boundary part 8 lower boundary part 9 matrix part 10 matrix part 11 cap 12 tissues 13 Matrix part 14 Matrix part 41 Core part 51, 52, 53 Coupling element 61 Upper shield 62 lower sign 63 Slide wedge 64 Mounting rod 91 Insertion pin 92, 102, 132a, 142a Intervention section 101 Recording Box 111 Insertion section 131 Band fastening section 131a frame 131b, 144 Connecting rod 132 Leg section 132b curved section 133 Lead section 133a Basic section 141 Guide recess 142 Insertion opening 145 Opening section 511, 521 upper section 511a level section 511b inclined section 511c, 521b Side surface 511d, 511e, 521c chamfered section 512 lower section 521a upper surface 513 upper leg section 532 lower leg section 533 Connecting section 534 Intervention section 535 thread-like fastening object 536 Center line

Claims

[1] Method for forming a rubber layer (3) on a surface of a resin material body of a zipper coupling element (1), wherein the method comprises: first, applying a coating material to the surface of the resin body of the dome member (1) to form a coating layer (2), using a coating material to which a pigment has been added, wherein the pigment in the coating material for forming the coating layer comprises 10% to 30% by weight, and wherein the coating layer (2) has a surface roughness of 2 µm to 7 µm, and then rubber coating to form a rubber layer (3) on the paint layer. [2] Method for forming the rubber layer on the surface of the resin body of the zipper coupling member according to claim 1, wherein the coating material is an oil-based or a water-based coating material and the pigment is a color pigment. [3] Method for forming the rubber layer on the surface of the resin body of the zipper coupling member according to claim 1, wherein the coating material for forming the coating layer (2) is selected from an epoxy resin coating material, an acrylic urethane coating material, an acrylic melamine coating material, a polyurethane coating material, an alkyd resin coating material, an acrylic coating material, a chlorinated olefin coating material, a polyurea elastomer, a silicone resin coating material, a polysiloxane coating material, a fluorine-containing polymer coating material, an unsaturated polyester coating material, a vinyl ester coating material or a polyaniline coating material. [4] Method for forming the rubber layer on the surface of the resin body of the zipper coupling member according to claim 1, wherein the pigment is one or more of the following pigments: chrome yellow, antimony yellow, iron oxide yellow, cadmium yellow, Hansa yellow, benzidine yellow, chrome oxide green, chrome green, iron blue, ultramarine blue, iron red, cadmium red, molybdenum red, iron oxide black, aluminum powder, copper powder, zinc oxide, lithopone, titanium white, antimony white, lead white, graphite, aniline black and carbon black. [5] Method for forming the rubber layer on the surface of the resin body of the zipper dome member according to claim 1, wherein the coating layer (2) has a thickness of 30 µm to 50 µm. [6] Rubber layer on a resin material structure of a zipper coupling link, comprising a resin material body, wherein a coating layer (2) and the rubber layer (3) are formed successively on a surface of the resin material body of the zipper coupling link from the inside out, and a coating material for forming the coating layer (2) contains a pigment, wherein the pigment in the coating material for forming the coating layer comprises 10% to 30% by weight, and wherein the coating layer (2) has a surface roughness of 2 µm to 7 µm. [7] Rubber layer according to claim 6, wherein the coating layer completely or partially covers the surface of the resin material body and the rubber layer (3) completely or partially covers the coating layer (2). [8] Rubber layer according to claim 6 or claim 7, wherein the coating layer (2) and the rubber layer (3) are formed using the method for forming the rubber layer on the surface of the resin material according to any one of claims 1 to 5. [9] Rubber layer on a resin zipper, comprising a support strap, a coupling element and a slider, wherein the coupling element has a resin material body, wherein on an outer surface of the resin material body of the coupling element a coating layer (2) and the rubber layer (3) are formed successively from the inside out and a coating material for forming the coating layer (2) contains a pigment, wherein the pigment in the coating material for forming the coating layer comprises 10% to 30% by weight percent, and wherein the coating layer (2) has a surface roughness of 2 µm to 7 µm. [10] Rubber layer according to claim 9, wherein the coating layer (2) and the rubber layer (3) are formed using the method for forming the rubber layer on the surface of the resin body of the dome member according to any one of claims 1 to 5. [11] Rubber layer on a resin push button with a male part (9) and a female part (10), wherein on an outer surface of the resin push button a coating layer (2) and the rubber layer (3) are formed successively from the inside out and a coating material for forming the coating layer (2) contains a pigment, wherein the pigment in the coating material for forming the coating layer has a weight percent of 10% to 30% and wherein the coating layer (2) has a surface roughness of 2 µm to 7 µm. [12] Rubber layer according to claim 11, wherein the male part (9) and the female part (10) each have a cap (11) and the coating layer (2) and the rubber layer (3) are formed at least on an entire or part of a surface of the cap (11). [13] Rubber layer on a resin clasp, comprising a male part (13) and a female part (14), wherein a coating layer (2) and the rubber layer (3) are formed successively on an outer surface of the resin clasp from the inside out, and a coating material for forming the coating layer (2) contains a pigment, wherein the pigment in the coating material for forming the coating layer comprises 10% to 30% by weight, and wherein the coating layer (2) has a surface roughness of 2 µm to 7 µm. [14] Rubber layer according to claim 13, wherein the coating layer (2) and the rubber layer (3) are formed at least on an entire or part of an outer surface of a main body of the die part (14).

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