KR200395696Y1 - Artificial leather complex string - Google Patents

Abstract

The present invention provides two synthetic leather materials having one or two or more linear cross-sectional cores of low elongation and high toughness, and a long strip shape to surround the cores. ), And each of the materials provides a synthetic leather composite string consisting of a structure in which both ends of the materials are folded inwardly, and the core is positioned between the materials, and then attached to each other.

The composite strap according to the present invention not only provides excellent dimensional stability and properties corresponding to natural leather, but is also easy to manufacture and can express various colors and / or textures, thereby providing excellent aesthetics. In addition, such a composite strap can be used in itself or in the form of a string such as shoes, clothing, ornaments, etc. can be used as a material, it can create a variety of designs due to the above characteristics.

Description

Synthetic Leather Composite String {ARTIFICIAL LEATHER COMPLEX STRING}

The present invention relates to a synthetic leather composite string of a novel structure excellent in dimensional stability and texture, more specifically;

Many items used in real life, such as shoes, clothing, ornaments, etc. are made of a variety of materials, for example, natural materials such as natural fibers, leather, artificial materials such as synthetic fibers, synthetic resins, composite materials such as these Used. In addition, these materials are transformed into various types of structures to manufacture the articles, one of which is a string.

The string itself has various uses, as well as twisting two or more strands together to form various strings having different shapes and shapes, or as shown in Figs. Iii) weave in various forms with the material 200 to form the band 300, or weave them in the form of a woven fabric may be made in the form of cloth. Straps deformed in such a variety of forms, for example, can be used for the band 300 of the sandal 400, as shown in Figures 3 and 4.

Such a string may be made of a number of fine fiber yarns made of natural fibers such as cotton, hemp, wool, or synthetic fibers such as polyester, nylon, etc., but these may be various types of strings, bands, and woven fabrics. When used for the same purposes as in Figures 3 and 4 made of such, there is a problem that the shape stability and aesthetics are inferior and easily stretched. Natural leather straps have been preferred since the past as a material capable of exhibiting such form stability and aesthetics, but they are expensive, difficult to exhibit various colors, and easily contaminated.

In recent years, synthetic resin straps have been developed and used to exhibit the advantages of natural leather straps at low cost. Synthetic resin string is a form in which the synthetic resin sheet is cut in the longitudinal direction of a constant width, and both side end portions are folded and bonded to each other. Such synthetic resin straps can be easily manufactured by a simple process using inexpensive synthetic resins, but exhibit some texture, but have a problem in that dimensional stability is greatly reduced due to the elasticity of the synthetic resin itself.

Meanwhile, a composite string produced by placing a core material of high tensile strength (very low elasticity) in a synthetic resin sheet cut in the longitudinal direction as described above and then bonding the synthetic resin sheets to each other has been developed. Such a composite string shows superior dimensional stability than the synthetic resin string, but has a problem of inferior volume, cushioning, and the like.

In order to solve this problem, the present applicant has registered in Korean Utility Model No. 326611, both ends of a strip-shaped synthetic leather material surrounding a linear core material of one or more circular cross sections of low elongation and high toughness inwardly with a constant width. By gluing the outer surfaces of the folded parts against each other, they provide excellent dimensional stability, produce a variety of aesthetics, and provide synthetic leather composite straps that show a large volume and high cushioning properties according to changes in the finishing process applying heat and pressure. have.

However, the registration utility model is made of one synthetic leather material has a disadvantage that it is difficult to express more than one color or texture. For example, in order to realize two kinds of colors in one synthetic leather, two kinds of pigments should be administered or printed on the surface of the manufacturing process of the material itself, resulting in a complicated manufacturing process. In addition, in the manufacturing process of the composite string to fold the outer surface folded inward again to be bonded to each other, because the cross-sectional size of the composite string is very small, there is a possibility that a defect is caused by a slight error.

Therefore, the object of the present invention is to solve the problems of the prior art and the technical problem that has been requested from the past.

That is, the present invention, when used as a material of some or all of the articles such as shoes, clothing, ornaments, etc., has excellent dimensional stability and exhibits excellent cushioning and bulkiness corresponding to natural leather straps, as well as two or more colors. It is an object of the present invention to provide a synthetic leather composite strap that can provide and texture and easy to manufacture.

Synthetic leather composite strap according to the present invention for achieving this purpose,

(a) a linear core of one or more circular cross sections with low elongation and high toughness, and

(b) includes two synthetic leather materials having a long strip shape to wrap the core material,

Each of the materials has a structure in which both end portions thereof are folded inward, and the core is positioned between the materials, and then attached to each other.

Therefore, the composite strap according to the present invention has a bulky feeling and excellent cushioning properties because both ends of the material are attached to the folded structure, and since the linear core material is located inside the composite string, the dimensional stability and strength are higher than those of the synthetic leather only. Not only is very high, but the two types of synthetic leather materials each form the outer surface, so that it is possible to implement a variety of colors and textures, the plate-shaped materials have the advantages of easy to manufacture because they adhere to each other.

The material of the linear core material is not particularly limited as long as it has a low elongation and high toughness. Although a boron fiber yarn etc. are mentioned, It is not limited to that. Preferably, fishing lines may be used which exhibit very low elongation and very high tensile strength. The cross-sectional shape of the linear core member has a circular cross section as described above. Compared with other cross-sectional linear cores such as square cross-sections, the linear cores of circular cross section can reduce the selectivity of the bonding position, and when the adhesive is applied to the cores, the application area of the adhesive is small and therefore the drying time is shortened. , The production rate is very good. As described above, the wire core material of the present invention may be used in one or two or more numbers in the composite string. Two or more may be used if very low elongation is required or very high strength is required.

The synthetic leather material having a strip shape has a relatively large width so as to surround the linear core material. Materials of synthetic leather are known in the art, and examples thereof include, but are not limited to, solvent-based polyurethane synthetic leather, water-based polyurethane synthetic leather, and the like. In general, synthetic leather is composed of a base layer of a woven or nonwoven fabric, a silver layer, a top skin layer and the like, including an adhesive layer for mutual adhesion thereof. The adhesive layer is located between the base layer and the silver layer, or between the silver layer and the top skin layer, or between each of these layers. The base layer provides the mechanical strength of the entire synthetic leather, the silver layer provides the texture as leather, and the top skin layer forms the outer surface of the leather. However, in recent years, synthetic leather has been developed that provides physical properties as leather without having such a sequential structure. Moreover, the synthetic leather material required by the present invention does not necessarily have the physical properties required by the synthetic leather as a general material, and therefore, the synthetic leather defined in the present invention is not limited to the definition of general synthetic leather.

The two synthetic leather materials constituting the composite string of the present invention preferably provide excellent aesthetics when at least one of color and texture is different from each other. In one preferred example, the outer surface of two synthetic leather materials consists of colors that contrast in brightness, saturation or color. This composite strap can create a more sophisticated design compared to the case of a single color. In addition, the two synthetic leather materials may be made of synthetic leather of different materials. Synthetic leather can be made of materials with different textures by differentiating raw materials, processing methods and structures. In some cases, a variety of designs may be created by adding a shape to at least one of the two materials. As such, synthetic leather materials of the composite strap according to the present invention can be changed in various configurations, all of which should be interpreted as being included in the scope of the present invention.

 As described above, both ends of the workpiece are folded and glued together. The size of the folded width of the end may be 1/8 to 1/2 of the size of the overall width. If the folded width is less than 1/8 of the full width, it is not easy to fold and bond and the remaining space is too large to reduce the adhesion of the wire core, whereas if larger than 1/2, the folded end is It may not be desirable as it may overlap with the site.

When the composite string is manufactured by mutually bonding the wire cores between two folded members, the heat and pressure are simultaneously applied to improve adhesion and fix it in a fixed shape. The direction and magnitude of pressure application may vary depending on the physical properties.

Since the composite strap according to the present invention can be produced in various sizes, the size of the core material and the material is not particularly limited.

The present invention also provides a string made by weaving two or more composite strings of the above structure.

The structure of the strings manufactured by weaving two or more members having a linear structure as a whole may be various, and the design registration applications of the applicants 2003-15250, 2003-15251, 2003-15252 and 2003 -15253 and the like, all of which are incorporated herein by reference.

Hereinafter, the content of the present invention will be described in more detail with reference to the drawings, but the scope of the present invention is not limited thereto. First, Figures 5 to 11 schematically show the manufacturing process of the composite string according to an embodiment of the present invention.

Referring to Figure 5, a strip-shaped synthetic leather material 110 is shown. The upper surface 112 of the material 110 forms an inner surface of a compound string, which is made later, and the lower surface 114 is exposed to the outer surface. Therefore, the bottom surface 114 may be surface treated to exhibit a separate pattern or texture. The material 110 may be manufactured by cutting a sheet of synthetic leather (not shown) to a predetermined width.

Referring to Figure 6, the adhesive 120 is applied to the upper surface of the workpiece (110). Since the adhesive 120 is used for later bonding with the core material and bonding of the folded state of the end portion of the material 110, in some cases, the adhesive 120 is applied only to the end portion of the material 110, and the adhesive material is attached to the core material. 120 may be applied. The adhesive 120 is not particularly limited, but natural latex is particularly preferred. Since natural latex has low adhesiveness in the dry state after application, it is advantageous in process processing, and when heat is heated as necessary, it is preferable because high adhesive strength can be exhibited. Therefore, the natural latex adhesive 120 is applied to the material 110 and then dried (in some cases, thermally dried).

Referring to FIG. 7, both ends 116 of the workpiece 110 are folded inward by a predetermined length and bonded to each other to form a folded portion 118. Adhesion of the folded end 116 is achieved by the adhesive applied to the upper surface of the workpiece 110, and when the natural latex adhesive 120 is applied and dried on the upper surface of the workpiece 110 in the process of FIG. In the state, adhesion can be performed by applying heat and pressure. In FIG. 7, the part S having the end 116 unfolded is shown in the middle. At this time, the size of the unfolded workpiece portion (S) may correspond to the size of the linear core material (not shown) of the circular cross section to be located later. However, in some cases, the end portions 116 may be folded to abut almost so that an unfolded portion does not exist, and a linear core may be placed after applying an adhesive on the upper surface.

Referring to FIG. 8, the workpiece 110a having a different color, texture, surface treatment, and the like is placed on the workpiece 110. The workpiece 110a has a structure in which both ends thereof are bonded to each other in the same manner as the workpiece 110 and is positioned above the workpiece 110 so that the folded surfaces face each other.

9 and 10, the natural latex adhesive 120 is applied to one or each of the folded upper end surface of the workpiece 110 and the folded upper end surface of the workpiece 110a, and the workpiece 110 and the workpiece ( A linear core member 130 having a circular cross section is positioned between 110a). In some cases, two or more linear core members 130 may be used.

Referring to FIG. 11, when the substrate 110 and the substrate 110a are bonded to each other in a state where the linear core member 130 is interposed, the composite string 100 according to an embodiment of the present invention is completed. This process can be performed by hand or by machine, for example using two interlocking rollers or the like as disclosed in Applicant's Utility Model No. 326611. The contents of the registered utility model is incorporated into the present invention by reference.

The finished composite strap 100 is made of two different two kinds of synthetic leather materials (110, 110a) to form an outer surface thereof to provide a more sophisticated aesthetics compared to the case consisting of one type of material (110 or 110a). Can be.

12 is a perspective view schematically showing a string according to an embodiment of the present invention consisting of three composite straps of FIG.

Referring to FIG. 12, the nail 500 has a structure in which three composite strings 100, 101, and 102 are alternately knotted. Each of the composite straps 100, 101, 102 has two synthetic leather materials (110, 110a) forming the outer surface, the position of each synthetic leather material (110, 110a) according to the knot structure to be determined upward or downward. Can be. In FIG. 12, the synthetic leather materials 110 and 110a are arranged in the up and down positions of the respective composite straps 100, 101, and 102 so that the upper and lower strings are divided into two types of colors. It shows that this is made. However, each of the composite straps 100, 101, and 102 may be of different colors, textures, and / or colors, so that various designs are possible. In addition, it is a matter of course that the number and / or knot structure of the composite string (100, 101, 102) constituting the string 500 may be different.

FIG. 13 schematically illustrates the shape of the sandal 400 in which the band 300 is formed by using the string 500 of FIG. 12.

As described above, the composite strap according to the present invention not only provides excellent dimensional stability and properties corresponding to natural leather, but is also easy to manufacture and can express various colors and / or textures, thereby providing excellent aesthetics. In addition, such a composite strap can be used in itself or in the form of a string such as shoes, clothing, ornaments, etc. can be used as a material, it can create a variety of designs due to the above characteristics.

Those skilled in the art to which the present invention pertains will be able to make various modifications and applications within the scope of the present invention based on the above contents.

1 and 2 are perspective views of a band made by weaving a composite string and other linear material in a constant repeating form;

3 and 4 are schematic views of sandals made using the bands of FIGS. 1 and 2, respectively;

5 to 11 is a step showing the manufacturing process of the composite string according to an embodiment of the present invention;

12 is a schematic diagram of a string according to one embodiment of the present invention made using three composite straps of FIG.

FIG. 13 is a schematic diagram of sandals in which several bands of FIG. 12 are formed.

Claims (5)

(a) a linear core of one or more circular cross sections with low elongation and high toughness, and (b) includes two synthetic leather materials having a long strip shape to wrap the core material, Each of the materials is a synthetic leather composite string consisting of a structure in which both ends of the fold inwardly attached to each other and the core material is placed between such materials and then attached to each other. The synthetic leather composite string of claim 1, wherein the synthetic leather materials are made of materials having different colors or textures.   3. The synthetic leather composite string of claim 2, wherein the synthetic leather materials are made of colors whose outer surface is contrasted in brightness, saturation or color. The synthetic leather composite string of claim 1, wherein the size of the folded width of the end portion is 1/8 to 1/2 of the total width. A string produced by alternately weaving two or more composite strings according to any one of claims 1 to 4.