1324645 九、發明說明： 【發明所屬之技術領域】 本發明係關於一種椅具用彈性紗及彈性網，係其芯層 • 與表層係同材質之聚酯系熱塑性彈性體 (Thermalplastic Ester Elastomer, TPEE)彈性材料共擠 壓成型’且芯層之熔點較表層之熔點高。 【先前技術】 φ 彈性紗之前案，如美國專利前案第5, 677, 057號與第 5, 858, 528號，係使用不同材質與不同熔點之塑膠材料芯 層與表層去共擠壓成型（coextrusi〇n)。共擠壓成型 (coextrusion)之目的，可使芯層與表層在熔融狀態結合 為一體。 但因芯層與表層係不同材質製成，拉伸時，兩者因彈 性係數不同產生的形變也不同，剛開始，芯層與表層間會 產生極微小之剝離現象，用久之後，極快速的老化。 # s則述彈性紗用於椅具之布面時，初期雖可在使用者 離開椅具時快速回復’用一段時間後會因使用者體重長期 施加，令芯層與表層快速產生剝離之問題，終於快速老 化，而失去彈性。 【發明内容】 本發明係提供一種椅具用彈性紗，藉其芯層與表層係 同材質之彈性材料共擠壓成型，且怒層之炫點較表層之炫 點高，而可解決芯層與表層不同材質用久會制離之問題。 1324645 「Ί·8 Γ Γ9 * ;，ΐ月.Ι^ι)正替換頁丨 i__ 本發明為椅具用彈性紗，係由芯層與表層共擠壓成型 而構成，其中芯層與表層係同材質之彈性材料，該彈性材 料係聚醋系熱塑性彈性體 （Thermalplastic Ester Elastomer, ΤΡΕΕ)，且芯層之炼點較表層之熔點高，其中 芯層與表層之彈性材料係ΤΡΕΕ，而芯層與表層之比例為 9 : 1 至 7 : 3。 上述之芯層與表層之比例為9 : 1或8 : 2或7 : 3 本發明亦可包括一種椅具用彈性網，其係以上述之椅 具用彈性紗製成者。 藉之，本發明具有下列之優點/增進功效： 1. 壽命較長，芯層與表層不會剝離。 2. 當使用者離開椅具後，彈性布會很快恢復原形。 【實施方法】 首先，如第一圖所示，本發明第一實例係適用於椅具 之彈性紗（1)，係由芯層（11)與表層（12)共擠壓成型而構 成，其中芯層（11)與表層（12)係同材質之彈性材料[如聚 酯系熱塑性彈性體（Thermalplastic Ester Elastomer, ΤΡΕΕ)]，且芯層（11)之熔點較表層（12)之熔點高，另芯層 (11)與表層（12)之比例為9:1至7:3,使用時9:1或8: 2或7 : 3等均可實施。 藉之，如第二圖所示，在熱熔接時，表層（12)因熔 61324645 IX. Description of the Invention: [Technical Field] The present invention relates to an elastic yarn and an elastic mesh for a chair, which is a core layer and a thermoplastic elastomer of the same material as the surface layer (Thermalplastic Ester Elastomer, TPEE The elastic material is co-extruded' and the melting point of the core layer is higher than the melting point of the surface layer. [Prior Art] φ Elastic yarn before the case, such as U.S. Patent Nos. 5, 677, 057 and 5, 858, 528, using a different material and a different melting point of the plastic material core layer and surface layer co-extrusion molding (coextrusi〇n). The purpose of coextrusion is to integrate the core layer and the surface layer in a molten state. However, due to the different materials of the core layer and the surface layer, the deformation caused by the different elastic coefficients is different when stretching. At the beginning, the core layer and the surface layer will have a very small peeling phenomenon. After a long time, it is extremely fast. Aging. # s When the elastic yarn is used for the fabric of the chair, the initial time can be quickly restored when the user leaves the chair. 'After a period of time, the user's weight will be applied for a long time, and the core layer and the surface layer will be quickly peeled off. , finally aging quickly, and losing flexibility. SUMMARY OF THE INVENTION The present invention provides an elastic yarn for a chair, which is co-extruded by a core material and a surface material of the same material, and the glare of the anger layer is higher than that of the surface layer, and the core layer can be solved. Different materials from the surface layer will be used for a long time. 1324645 "Ί·8 Γ Γ9 * ;,ΐ月.Ι^ι) is replacing the page 丨i__ The present invention is an elastic yarn for a chair, which is formed by co-extruding a core layer and a surface layer, wherein the core layer and the surface layer are An elastic material of the same material, the elastic material is a thermoplastic elastomer (Thermalplastic Ester Elastomer, ΤΡΕΕ), and the melting point of the core layer is higher than the melting point of the surface layer, wherein the core layer and the elastic material of the surface layer are ΤΡΕΕ, and the core layer The ratio to the surface layer is 9:1 to 7:3. The ratio of the core layer to the surface layer is 9:1 or 8:2 or 7:3. The present invention may also include an elastic net for a chair, which is The chair member is made of elastic yarn. By the way, the invention has the following advantages/enhancement effects: 1. The service life is long, and the core layer and the surface layer are not peeled off. 2. When the user leaves the chair, the elastic cloth will be very [Realization method] First, as shown in the first figure, the first example of the present invention is applied to the elastic yarn (1) of the chair, which is co-extruded from the core layer (11) and the surface layer (12). And the elastic material in which the core layer (11) and the surface layer (12) are the same material [such as poly Is a thermoplastic elastomer (Thermalplastic Ester Elastomer, ΤΡΕΕ)], and the melting point of the core layer (11) is higher than the melting point of the surface layer (12), and the ratio of the core layer (11) to the surface layer (12) is 9:1 to 7: 3. When used, 9:1 or 8:2 or 7:3 can be implemented. As a result, as shown in the second figure, the surface layer (12) is melted during heat fusion.
不受影響，並因芯層（11) 嫁點高之芯層（Π)硬度 ’表層（12)則因熔點較 點較低而熔融並結合，芯層（1 1 )則 與表層（12)係同材質共擠壓成型， 較高，受同樣力量時，變形量較小 變形量較大。表層 低’硬度較低而較軟’受同樣力量時 ⑽較軟較㈣形，而芯層⑴）較硬且較易喊原狀。依 此，當多股彈性紗（1)絞合成彈性線時 ’彈性線可適當加 熱使各彈性紗⑴㈣結合，亦可當彈性線編成彈性布後 再適當加熱。 如第二圖所示，本發明第二實例之彈性紗（1A)，係由 芯層（11A)與表層（12A)共擠壓成型而構成，其中芯層（UA) 與表層（12A)係如第四圖所示，仍同材質之彈性材料[如聚 酉旨系熱塑性彈性體（Thermalplastic Ester Elastomer, ΤΡΕΕ)] ’且芯層（HA)之熔點較表層（12A)之熔點高，其中 芯層（11A)與表層（12A)之比例為9 : 1至7 : 3，使用時9 : 1或8 : 2或7: 3等均可實施《其使用實施如第一實例所 揭露，不贅述。 如第五圖所示，為應用本發明之彈性紗或（1A)編織 成椅具用彈性網（布）之示意圖。則，以此製成之彈性網用 來作為椅具之布面’在承受使用者體重後，可提供較佳之 回復力，亦即’當使用者離開椅具後，彈性布會很快恢復 原形。 1324645Unaffected, and because the core layer (11) is high in the core layer (Π) hardness, the surface layer (12) is melted and combined due to the lower melting point, and the core layer (1 1 ) is opposite to the surface layer (12). It is coextruded with the same material, which is higher. When subjected to the same force, the deformation amount is smaller and the deformation amount is larger. The surface layer is low and the hardness is lower and softer. When subjected to the same force (10) is softer than the (four) shape, and the core layer (1) is harder and easier to call. Accordingly, when the plurality of elastic yarns (1) are twisted into an elastic yarn, the elastic yarns may be appropriately heated to bond the elastic yarns (1) and (4), or may be appropriately heated after the elastic yarns are knitted into an elastic fabric. As shown in the second figure, the elastic yarn (1A) of the second example of the present invention is formed by co-extruding a core layer (11A) and a surface layer (12A), wherein the core layer (UA) and the surface layer (12A) are As shown in the fourth figure, the elastic material of the same material [such as Thermoplastic Ester Elastomer (ΤΡΕΕ)] and the melting point of the core layer (HA) is higher than the melting point of the surface layer (12A). The ratio of the layer (11A) to the surface layer (12A) is 9:1 to 7:3, and the use of 9:1 or 8:2 or 7:3 can be carried out. The implementation of the use is as disclosed in the first example, and the description is omitted. . As shown in Fig. 5, a schematic view of an elastic web (cloth) for woven into an elastic yarn or (1A) for use in a chair. Then, the elastic net made of this is used as the cloth surface of the chair to provide a better restoring force after receiving the user's weight, that is, 'the elastic cloth will quickly recover when the user leaves the chair. . 1324645
【圖式簡單說明】 第一圖係本發明第一實例之剖視圖。 第二圖係本發明第一實例之熱熔接合之示意圖。 第三圖係本發明第二實例之剖視圖。 第四圖係本發明第二實例之熱熔接合之示意圖。 第五圖係應用本發明之彈性紗編織成椅具用彈性布之示 意圖。 · 【主要元件符號說明】 (1)彈性紗 （11)芯層 (12)表層 （1A)彈性紗 (11A)芯層 （12A)表層BRIEF DESCRIPTION OF THE DRAWINGS The first drawing is a cross-sectional view of a first example of the present invention. The second drawing is a schematic view of the hot melt joining of the first example of the present invention. The third drawing is a cross-sectional view of a second example of the present invention. The fourth figure is a schematic view of a hot melt joint of a second example of the present invention. The fifth drawing is an illustration of the use of the elastic yarn of the present invention to woven into an elastic cloth for a chair. · [Main component symbol description] (1) Elastic yarn (11) Core layer (12) Surface layer (1A) Elastic yarn (11A) Core layer (12A) Surface layer