TW449549B - Method for producing static-carrying composite nonwoven cloth - Google Patents
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4495二> 五、發明說明(1) 由於帶靜電之不織布可利用其所帶之靜電性吸附空氣 中的粒子…’近年來’帶靜電之不織布已廣 空氣過濾。 中華民國專利第297062號中,係將部分或全部變性之 無極性聚合物薄膜予以開纖而製成不織布。由於此 用改質聚合物,故原料取得不易。 中華民國專利第3 1 1 0 9 6號中’係使用補強織品 (scrim)來補強帶靜電不織布’將補強織品與靜電不織布 疊合後再針軋。補強織品亦不易取得。 美國專利第5,350, 620號中’則以不帶電之熔喷纖維 (meltblown fibers)和帶電之短纖維(staple fibers)同 時形成複合纖維網。實際製程不易控制。 此外’傳統上利用針軋不織布製作帶靜電空氣過濾用 不織布之最大問題在於其纖維本身含有油劑,故在加靜電 過程中,其帶電荷無法提升,故過濾效率偏低,無法達到 實際需求的過濾效率。 因此,本發明之目的即為解決上述問題,而提供一種 原料取得容易、製程簡單的製造帶靜電之複合不織布的方 法。所得之複合不織布具有品質穩定、且過濾效果佳的優 點。 為達成本發明之目的,本發明係使用經除油或未經除 油處理之纖維不織布與炼喷不織布為原料,經疊合、針 軋、帶靜電等步驟而得到帶靜電之複合不織布。 依據本發明之第一特徵,製造帶靜電之複合不織布的4495 II > V. Description of the invention (1) Since the non-woven fabric with static electricity can use its electrostatic property to adsorb particles in the air ... 'In recent years, the non-woven fabric with static electricity has been widely used for air filtration. In the Republic of China Patent No. 297062, a partially or totally denatured non-polar polymer film is opened to make a nonwoven fabric. Since the modified polymer is used for this purpose, it is not easy to obtain raw materials. In the Republic of China Patent No. 3 1 1096, "the use of a scrim to reinforce a non-woven fabric with static electricity" is to superimpose the reinforced fabric with an electrostatic nonwoven fabric and then needle-roll. Reinforcement fabrics are also not easily available. In U.S. Patent No. 5,350,620 ', a composite fiber web is formed of unblown meltblown fibers and charged short fibers simultaneously. The actual process is not easy to control. In addition, the biggest problem of traditionally using needle-rolled non-woven fabrics to make non-woven fabrics with electrostatic air filtration is that the fibers themselves contain oil agents, so during the process of static electricity, the charged charge cannot be improved, so the filtration efficiency is low, and it cannot meet the actual needs. Filtration efficiency. Therefore, an object of the present invention is to provide a method for manufacturing a composite non-woven fabric with static electricity by making it easy to obtain raw materials and simple in order to solve the above-mentioned problems. The obtained composite nonwoven has the advantages of stable quality and good filtering effect. In order to achieve the purpose of the present invention, the present invention uses a non-degreased or non-degreased fibrous nonwoven fabric and a spray-blown nonwoven fabric as raw materials to obtain a composite static-charged composite nonwoven fabric through the steps of lamination, needle rolling, and static electricity. According to the first feature of the present invention, a composite non-woven fabric
4 4 9 5 4 五、發明說明¢2) 方法包括: (a)將經除油或未經除油處理之纖維不織布與熔喷不 織布互相疊合; (b )將疊合後之不織布經針軋複合處理;以及 (c)使針軋複合處理後之不織布帶電, 其中該熔喷不織布可為帶靜電或不帶靜電,當熔喷不 織布或者經除油或未經除油處理之纖維不織布之一為帶電 時,可省略步驟(c )。 依據本發明之第二特徵,製造帶靜電之複合不織布的 方法包括: (a) 將纖維經梳棉、疊棉而形成棉網; (b) 將熔喷不織布與步驟(a)所得之棉網一起疊合,再 進行針軋複合處理;以及 (c) 使針軋複合處理後之不織布帶電, 其中該熔喷不織布可為帶靜電或不帶靜電,當熔喷不 織布為帶靜電時,可省略步驟(c)。 依據本發明之第三特徵,製造帶靜電之複合不織布的 方法包括: (a) 將聚合物以熔喷方式形成纖維而喷在除油或未經 除油處理之纖維不織布上,直接成型為雙層不織布; (b) 將雙層不織布予以針軋;以及 (c) 使針軋後之不織布帶電, 當經除油或未經除油處理之纖維不織布為帶靜電時,可省 略步驟(c )。4 4 9 5 4 V. Description of the invention ¢ 2) The method includes: (a) laminating the fiber-removed or non-oil-removed fibrous non-woven fabric and the meltblown non-woven fabric with each other; (b) laminating the laminated non-woven fabric with a needle Rolling composite treatment; and (c) electrifying the non-woven fabric after needle rolling composite treatment, wherein the meltblown nonwoven fabric may be static or non-static, when the meltblown nonwoven fabric or the fiber nonwoven fabric which has been degreased or not degreased When it is charged, step (c) can be omitted. According to a second feature of the present invention, a method for manufacturing a static-charged composite nonwoven fabric includes: (a) carding and laminating fibers to form a cotton web; (b) meltblown nonwoven fabric and the cotton web obtained in step (a) Laminate together, and then perform needle-rolling composite treatment; and (c) electrify the non-woven fabric after needle-rolling composite treatment, where the meltblown nonwoven can be static or non-static, and can be omitted when the meltblown nonwoven is static. Step (c). According to a third feature of the present invention, a method for manufacturing a composite non-woven fabric with static electricity includes: (a) forming a polymer into fibers by melt-blown and spraying on a non-degreasing or non-degreasing fiber non-woven fabric, and directly forming a double Layer non-woven fabric; (b) needle-rolled double-layer non-woven fabric; and (c) electrify the non-woven fabric after needle-rolling. When the fiber non-woven fabric that has been degreased or not degreased is charged with static electricity, step (c) may be omitted. .
4495 4 y4495 4 y
五、發明說明(3) 由於纖維不織布不易帶靜電,因此本發明想到利用容 易帶電的熔喷不織布和纖維不織布複合在一起,則可解$ 不易帶電的問題。 '' 可使用於本發明之纖維不織布可為針軋不織布、水札 不織布、熱風棉不織布或紡粘不織布。此纖維不織布較佳 為短纖維不織布’纖維細度為0·5至15丹尼,較佳者為j 6丹尼。 再 使得在 法有效 的效果 理,例 更容易 電,例 依 布和熔 本上, 經除油 兩者均 程當中 不織布 除油之 第 或未經 布的帶電荷無 為了得到更奸 經過去油處 可使得不織布 以使不織布帶 理之纖維不織 起的概念,基 將經除油或未 疊合’複合時 維不織布之製 式是,將燦嘴 喷在除油或未 這三種方式。 是’將經除油 直接疊合,再 者,由於纖維不織布的纖維本身可能 後續的加靜電處理過程中,複合不織 提昇,而造成過濾效果不佳。因此, ,本發明中所使用的不織布最好預先 如,以非離子型界面活性劑處理,亦 帶電。依據本發明,可利用電章處理 如使用10至50 kV之高壓電暈進行之。 :本發明,使用經除油或未經除油處 喷不織布為原料,而將兩者複合在一 :以三種方式來實施。第一種方式是 處理之纖維不織布和熔噴不織布直接 為不織布的型式。第二種方式是在纖 ,將熔嘴不織布加入疊合。第三種方 ::合物原料以熔喷方式形成i維而 ::織布上。以下兹分別詳細說明 一種製造帶靜電之複合不織布的方 除油處理H维不織布㈣噴不織布V. Description of the invention (3) Since the fiber nonwoven fabric is not easy to be charged with static electricity, the present invention contemplates using a melt-blown nonwoven fabric and a fiber nonwoven fabric that are easily charged together to solve the problem of non-chargeability. '' The fibrous nonwoven fabric that can be used in the present invention can be a needle-punched nonwoven fabric, a spun nonwoven fabric, a hot-air cotton nonwoven fabric, or a spunbonded nonwoven fabric. The fiber nonwoven fabric is preferably a short fiber nonwoven fabric 'having a fiber fineness of 0.5 to 15 denier, and more preferably j 6 denier. In order to make the effect more effective, the example is easier to charge. For example, according to the cloth and the fused book, the non-woven degreased or non-clothed charge is not used in order to get more raped and degreased. The concept of making the non-woven fabric to make the non-woven fiber non-woven is based on the concept of degreasing or non-overlapping. When the composite is made of the non-woven fabric, the method of spraying bright mouth on degreasing or non-woven is the three methods. Yes ’will be directly laminated after degreasing, and further, because the fiber of the non-woven fabric itself may be subjected to a subsequent electrostatic treatment, the composite non-woven fabric is improved, resulting in poor filtering effect. Therefore, the non-woven fabric used in the present invention is preferably treated with a non-ionic surfactant in advance and also charged. According to the present invention, it can be treated with electric seals such as using a high voltage corona of 10 to 50 kV. : The present invention uses non-degreased or non-degreased non-woven fabric as the raw material, and combines the two together. It is implemented in three ways. The first method is a type in which the processed fiber nonwoven fabric and meltblown nonwoven fabric are directly made of nonwoven fabric. The second way is to add a fusion nozzle non-woven fabric to the fiber. The third formula :: composite material is melt-blown to form the i-dimensional :: woven fabric. The following is a detailed description of a method for manufacturing a composite non-woven fabric with static electricity.
^4^549 五、發明說明(4) ~ -- 進行針軋’使兩種不織布充分結合。接著,再將複合不織 布經過電暈等帶電處理’以使複合不織布帶電。 、 作為原料的熔喷不織布可為帶靜電或不帶靜電,經除 油,未經除油處理之纖維不織布亦可預先經帶電處理。若 原料之一為帶電時,亦即,若當熔喷不織布為帶靜電或者 纖維不織布已經帶電處理時,則複合不織布最後之 理可省略。 & 、依據本發明,第二種製造帶靜電之複合不織布的方法 為,將纖維經梳棉、疊棉而形成棉網。接著,將熔噴不織 布與所得之棉網一起疊合,再進行針軋。最後,再將複合 不織布經過電暈等帶電處理’以使複合不織布帶電。 _ $樣地’作為原料的熔喷不織布可為帶靜電或不帶靜 =°當溶喷不織布為帶靜電時,則最後使複合不織布帶電 的步驟可以省略。 依據本發明, 為,將欲作為炫噴 維而喷在除油或未 層不織布。接著將 帶電。 第三種製造帶靜電 不織布之聚合物原 除油之纖維不織布 雙層不織布經針軋 之複合不織布的方法 料以熔喷方式形成纖 上,而直接成型為雙 ,最後使複合不織布 同樣地,作為原粗 織布可預先經過帶雷^的經除油或未經除油處理之纖維不 織布帶電的步驟可以I理,在此情況下,則最後使複合不 ’ 略。 本發明所用之纖維 本發明所用之纖維織布可為採用梳棉法而製成的。 為聚烯烴纖維、聚酯纖維、聚醯胺纖^ 4 ^ 549 V. Description of the Invention (4) ~-Perform needle rolling 'to fully combine the two types of non-woven fabrics. Next, the composite nonwoven fabric is further subjected to a charging treatment such as corona to charge the composite nonwoven fabric. As the raw material, the meltblown non-woven fabric can be charged with static electricity or without static electricity. After being degreased, the fiber non-woven fabric without degreasing treatment can also be charged in advance. If one of the raw materials is charged, that is, if the melt-blown nonwoven is electrostatically charged or the fiber nonwoven has been charged, the last principle of the composite nonwoven may be omitted. & According to the present invention, the second method for manufacturing a composite non-woven fabric with static electricity is to form a cotton web by carding and stacking fibers. Next, the melt-blown nonwoven fabric was laminated with the obtained cotton web, and then needle-rolled. Finally, the composite nonwoven fabric is further subjected to a charging treatment such as corona to charge the composite nonwoven fabric. _ $ 样 地 ’meltblown nonwoven fabric can be static or static = ° When the meltblown nonwoven is electrostatically charged, the final step of charging the composite nonwoven can be omitted. According to the present invention, a degreasing or non-woven fabric is sprayed as a glare spray. It will then be charged. The third method of manufacturing a polymer non-woven fiber non-woven fabric with an electrostatic nonwoven fabric is a needle-rolled composite nonwoven fabric which is melt-blown and directly formed into a fiber. Finally, the composite nonwoven fabric is similarly used as The original coarse woven fabric can be pre-charged with a degreasing or non-degreasing fiber non-woven fabric charging step. In this case, the composite is finally omitted. Fiber used in the present invention The fiber woven fabric used in the present invention can be made by a carding method. Polyolefin fiber, polyester fiber, polyamide fiber
4495 4 ^ 五、發明說明(5) 維、或及其混合物,具體的例子為聚乙烯纖維和聚丙烯纖 維。 本發明所用之熔喷不織布可為聚烯烴纖維、聚酯纖 維、聚胺醋纖維、或及其混合物之纖維所製成的具體的 例手可為由聚乙烯纖維或聚丙烯纖維所製成的。溶喷不織 布的纖維直徑可為卜1〇微米’基重可為5_30 g/m2,較佳 為 10-20 g/m2 〇 以下’本發明將舉實施例以說明本發明之方法、特徵 及優點’但並非用以限定本發明之範圍,本發明之範圍應 以後附之申請專利範圍為準。 以下實施例中所使用之針軋不織布為基重100 g/m2之 短纖維針軋不織布,使用長度50 mm、細度3丹尼之聚丙稀 短纖維(購自福聚公司)。所使用之帶靜電之熔喷不織布為 聚丙烯熔喷不織布。帶靜電方式為,使用電暈放電設備, 以3 0 KV電壓使不織布帶永久靜電荷。 實施例1 將短纖維針軋不織布與基重10 g/m2之嫁喷不織布(纖 維細度1. 5 - 3 # m )疊合在一起,再經針軋機進行糾結複合 加工,針軋密度為200 針/cm2,孔隙率為94 % 。將所得 之複合不織布使用電暈放電設備使複合不織布帶永久靜電 荷。 實施例2 步驟同實施例1,但所使用之短纖維針軋不織布先使 用2%非離子型界面活性劑進行除油處理,再經帶電處理。4495 4 ^ V. Description of the invention (5) dimension, or a mixture thereof. Specific examples are polyethylene fibers and polypropylene fibers. The melt-blown nonwoven fabric used in the present invention may be made of polyolefin fibers, polyester fibers, polyurethane fibers, or a mixture of fibers thereof. Specific examples may be made of polyethylene fibers or polypropylene fibers. . The fiber diameter of the solution-blown non-woven fabric may be 10 micrometers. The basis weight may be 5-30 g / m2, preferably 10-20 g / m2 or less. The present invention will be described with examples to illustrate the methods, features, and advantages of the present invention. 'But it is not intended to limit the scope of the present invention, and the scope of the present invention shall be subject to the scope of patent applications appended later. The needle-punched nonwoven fabric used in the following examples is a short-fiber needle-punched nonwoven fabric with a basis weight of 100 g / m2. Polypropylene staple fibers (purchased from Fuju Company) with a length of 50 mm and a fineness of 3 deniers were used. The melt-blown nonwoven fabric with static electricity used is polypropylene melt-blown nonwoven fabric. The method of charging static electricity is to use a corona discharge device to make the non-woven fabric with a permanent electrostatic charge at a voltage of 30 KV. Example 1 A short-fiber needle-rolled non-woven fabric and a spray-weave nonwoven fabric with a basis weight of 10 g / m2 (fiber fineness of 1.5 to 3 # m) were laminated together, and then tangled and compounded by a needle rolling mill. The needle rolling density was 200 needles / cm2 with a porosity of 94%. The obtained composite nonwoven fabric was subjected to a permanent electrostatic charge using a corona discharge device. Example 2 The steps are the same as in Example 1, but the short-fiber needle-rolled nonwoven fabric used was degreased with 2% non-ionic surfactant, and then charged.
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將針軋不織布經2%非離子型界面活性劑進_ 理,然後將此經處理之針軋不織布置於熔噴行除油處 送帶中,以聚丙烯原料經過熔喷機成為1. 5〜2的成型機輸 纖維,直接成型於針軋不織布上,形成複合不M m的超細 得之複合不織布使用電暈放電設備使複合不士布。將所 電荷。 ’布帶永久靜 測試方法和結果 將未經除油處理之針軋不織布、經除油處理 。 處理之針軋不織布、加靜電之熔喷不織布、 ^加靜電 △及實施例 1 - 3所得之複合不織布,分別使用以下的測試方法來作八 使用TSI Co. 8130 Model儀器’使氣化納溶液(其微 粒之重量平均直徑為0.26 vm)以5.4 cm/sec的流速流經上 述之待測不織布,以測得不織布之過濾效率、壓差 (pressure drop)、及厚度等。結果如表1所示。過濾效率 和壓差的定義如下。 CB:過遽前微粒濃度(個/ c. c.) CA :過;慮後微粒濃度(個/ c, c.) 壓差= PA-PB (mmH20)The needle-rolled nonwoven fabric is processed by 2% non-ionic surfactant, and then the treated needle-rolled nonwoven fabric is arranged in a meltblown line to remove the oil from the conveyor belt, and polypropylene raw materials are passed through the meltblown machine to become 1.5 The forming machine of ~ 2 feeds the fibers directly to the needle-rolled nonwoven fabric to form a composite ultra-fine composite nonwoven fabric without M m. The corrugated discharge equipment is used to make the composite nonwoven fabric. Will all the charge. ’Permanent static test method and result of tape The needles that have not been degreased are rolled into a non-woven fabric and degreased. The processed needle-rolled nonwoven fabric, electrostatically-blown meltblown nonwoven fabric, electrostatically-added △, and the composite nonwoven fabric obtained in Examples 1 to 3 were prepared using the following test methods. TSI Co. 8130 Model instrument was used to make the vaporized sodium solution. (The average weight of the particles is 0.26 vm). The flow rate of 5.4 cm / sec was passed through the nonwoven fabric to be tested to measure the filtration efficiency, pressure drop, and thickness of the nonwoven fabric. The results are shown in Table 1. The definition of filtration efficiency and pressure difference is as follows. CB: Concentration of particulates before passing (c / c. C.) CA: Concentration of particulates after passing (c / c, c.) Pressure difference = PA-PB (mmH20)
Pa:過慮後空氣壓力 PB:過濾前空氣壓力Pa: Air pressure after filtering PB: Air pressure before filtering
44S 五、發明說明(7) 表1 產品 過濾效率Ο) 摩差(pressure drop) 厚度(_ 未經除油處理之針軋 不織布(市售) 4% 0.3 1.62 經除油及加辤電處理 之針軋不織布 65 % 0.3 1.65 加靜電之熔喷不織布1 (市售) 60% 1.0 0.12 實施例1之複合不織 市 54% 0.6 1.60 實施例2之複合不臧 布 85 % 0.6 1.62 實施例3之複合不織 布 80% 0.4 1.64 由表1之結果可見,依據本發明之方法所得之複合不 織布具有相當好的過滤效率。至於壓差是表示過濾過3輕 中,空氣流過濾材的空氣阻力。在相同的過濾效率下, 差愈小,表示耗能愈少。 U ^ 至於在實施例3中,將聚合物原料經過熔喷機而成為 超細纖維’直接成型於針軋不織布上的方式,相較於實施 例2中直接使用熔喷不織布,實施例3所得之複合不織命的 基重雖較增加(為15 g/m2),但熔噴不織布可和σ針乾不鐵 布形成為一結構較鬆的複合結構,使壓力差減少。 雖然本發明已以較佳實施例揭露如上,然其並 以 限定本發明,任何熟習此項技藝者,在不脫離:發明之碘44S V. Description of the invention (7) Table 1 Product filtration efficiency 0) Pressure drop Thickness (_ Needle-rolled nonwoven fabric without degreasing treatment (commercially available) 4% 0.3 1.62 After degreasing and electric treatment Needle-rolled nonwoven fabric 65% 0.3 1.65 Meltblown nonwoven fabric 1 with static electricity (commercially available) 60% 1.0 0.12 Composite nonwoven fabric of Example 1 54% 0.6 1.60 Composite nonwoven fabric of Example 2 85% 0.6 1.62 of Example 3 Composite non-woven fabric 80% 0.4 1.64 From the results in Table 1, it can be seen that the composite non-woven fabric obtained according to the method of the present invention has a fairly good filtration efficiency. As for the pressure difference, it means that the air resistance of the air flow filter material in the filtration is light. Under the filtration efficiency, the smaller the difference, the less energy consumption. U ^ As for the method in Example 3, the polymer raw material was melted into a superfine fiber through a melt blown machine, and the method was directly formed on the needle-rolled nonwoven fabric. The melt-blown nonwoven fabric was directly used in Example 2. Although the basis weight of the composite nonwoven fabric obtained in Example 3 was increased (15 g / m2), the melt-blown nonwoven fabric can be formed into a structure with a σ needle-dried iron fabric. Loose composite structure makes pressure difference Decrease. Although the present invention has been disclosed in the preferred embodiment as above, it also limits the present invention. Anyone skilled in the art will not depart from: the iodine of the invention
第10頁 4495 4 五、發明說明(8) 神和範圍内,當可作更動與潤飾’因此本發明之保護範圍 當視後附之申請專利範圍所界定者為準。Page 10 4495 4 V. Description of the invention (8) Within the scope of God and God, when it can be modified and retouched ', the scope of protection of the present invention shall be determined by the scope of the attached patent application.
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TW88110854A TW449549B (en) | 1999-06-28 | 1999-06-28 | Method for producing static-carrying composite nonwoven cloth |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3127595A1 (en) | 2015-08-06 | 2017-02-08 | K.J. Filtration Technologies Ltd. | Self-support electrostatic filter and a filtering device thereof |
TWI648448B (en) * | 2016-12-20 | 2019-01-21 | 財團法人紡織產業綜合研究所 | Electret non-woven fabric and fabricating method thereof |
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1999
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3127595A1 (en) | 2015-08-06 | 2017-02-08 | K.J. Filtration Technologies Ltd. | Self-support electrostatic filter and a filtering device thereof |
TWI648448B (en) * | 2016-12-20 | 2019-01-21 | 財團法人紡織產業綜合研究所 | Electret non-woven fabric and fabricating method thereof |
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