WO2017008599A1 - 一种无纺布立体袋及加工方法 - Google Patents

一种无纺布立体袋及加工方法 Download PDF

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Publication number
WO2017008599A1
WO2017008599A1 PCT/CN2016/084962 CN2016084962W WO2017008599A1 WO 2017008599 A1 WO2017008599 A1 WO 2017008599A1 CN 2016084962 W CN2016084962 W CN 2016084962W WO 2017008599 A1 WO2017008599 A1 WO 2017008599A1
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Prior art keywords
edge
wall
bag
woven
woven fabric
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PCT/CN2016/084962
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English (en)
French (fr)
Inventor
欧阳锡聪
陈祖仁
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温州欧伟机械股份有限公司
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Publication of WO2017008599A1 publication Critical patent/WO2017008599A1/zh

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Classifications

    • AHUMAN NECESSITIES
    • A45HAND OR TRAVELLING ARTICLES
    • A45CPURSES; LUGGAGE; HAND CARRIED BAGS
    • A45C3/00Flexible luggage; Handbags
    • A45C3/04Shopping bags; Shopping nets

Definitions

  • the present invention relates to a nonwoven fabric three-dimensional bag and a processing method thereof.
  • a paper bag or a cloth bag with a handle is used to carry an article while carrying it.
  • a woman walks with a small bag such as a hand bag so when using an item to go out to a destination or returning to an item that has been added to the destination, etc., the handle is often used.
  • the paper bag with the handle is lighter and thinner after folding, so it is easy to carry, but in turn its strength is weak and the shape is determined, so it is not suitable for handling heavier items and/or bulky items.
  • the bag with the handle has a high strength and the shape can be changed to match the shape of the article, so it is suitable for carrying bulky articles and/or heavier articles, but the bag itself is heavier and cannot be folded smaller. Therefore, there is a problem of inconvenience in carrying.
  • the bag has a higher value than a paper bag or the like, and when it is intended to be used for temporary use, there is a problem that it is difficult to purchase it easily.
  • the nonwoven fabric is bonded only by heat sealing in the same manner as the above-described shopping bag, which may not be able to manufacture a preferred non-woven fabric bag with a handle, because the ordinary heat sealing bonding melts the nonwoven fabric and applies pressure to bond them, so that the combination is combined.
  • the thickness of the portion is thinned and becomes easily damaged. For example, when the mouth of the bag is smashed and the force of smashing the heat seal portion on the side of the bag is applied, it is likely to be broken so as to be split from the mouth portion of the handle bag. Further, when a heavy article is placed, the handle is broken from the joint portion of the bag body, and the handle may be detached from the bag body.
  • the bottom of the bag formed by heat-sealing the bottom of the bag or the side portion of the bag body connected from the bottom of the bag is applied by the weight applied to the bottom of the bag. I am afraid that it will break from this part. Therefore, it is conceivable to bond the heat-sealed portions by stitching which is higher than the heat-sealing strength. Therefore, the non-woven bag made of a non-woven fabric is manufactured by sewing a non-woven fabric sheet with a sewing machine or the like. Therefore, it takes time and labor to manufacture, and there is a problem that the manufacturing cost is high, the processing is difficult, and the processing is troublesome.
  • the present invention provides a nonwoven fabric three-dimensional bag and a processing method thereof.
  • the technical solution of the present invention is: a non-woven three-dimensional bag, comprising a bag body and a handle, the handle is fixedly connected to the bag body, and the bag body is formed by folding a non-woven fabric.
  • the front wall, the rear wall, the side wall and the bottom wall, both sides of the front wall are folded out to the front edge in the direction of the rear wall, and both sides of the rear wall are folded out from the rear edge in the direction of the front wall, and the two sides of the bottom wall are folded upward
  • the front edge and the rear edge of the corresponding side are fixed by welding, and the bottom of the front edge and the rear edge are fixed to the bottom edge by welding, and the front edge, the rear edge and the bottom edge are welded.
  • the formed weld marks are in an inverted "T" shape.
  • the bag body is provided with two bending grooves in the middle portion, and the bag body between the two bending grooves forms the bottom edge.
  • the two bending grooves are provided with notch grooves.
  • the bottom edge is provided on the inner side of the front edge and the rear edge.
  • the handle and the bag body are welded by ultrasonic waves.
  • a method for processing a three-dimensional bag of non-woven fabric is: cutting a rectangular non-woven fabric; 2 punching out the notch groove in the middle of the non-woven fabric; 3 after forming the length of the notch groove
  • the width of the bottom wall of the non-woven three-dimensional bag presses the non-woven fabric into a "U" shape and forms the front wall and the rear wall; 4, the front wall and the rear wall are respectively bent to form the front edge and the rear edge; 5 the front edge and the The rear edge is welded.
  • the bending groove is punched out, and the bending groove is disposed on both sides of the notch groove.
  • the bottom wall is bent at the bottom. Edge, in step 5, weld the bottom edge to the front and back edges.
  • the fourth step first bends the bottom edge, and then the bent front edge and the rear edge are disposed outside the bottom edge.
  • the welding of the fifth step is performed by ultrasonic welding.
  • the handle is welded to the nonwoven fabric after the first step or after the second step.
  • a non-woven three-dimensional bag wherein the non-woven three-dimensional bag is processed according to the above processing method.
  • the beneficial effects of the invention are that the strength of the product is increased by the integral bag structure, and the joints of the front and rear edges are fixed by welding, which is more reliable and better utilizes the bag body.
  • the edge increases the strength of the product, reduces manufacturing time and labor costs, and reduces the cost of production, while being able to carry larger items or heavier items. Since the non-woven bag can be recycled after use and is easily circulated, it can also serve as an environmental protection and resource optimization.
  • FIG. 1 is a schematic structural view of an embodiment of the present invention.
  • FIG. 2 is a schematic view showing the structure of the bag body 1 in FIG.
  • FIG. 3 is a schematic structural view of the bag body 1 of FIG. 1 fully extended.
  • FIG. 1 in combination with FIG. 2 and FIG. 3, a non-woven three-dimensional bag and a processing method thereof, wherein the processing step is: cutting a rectangular non-woven fabric; 2 punching a notch in the middle of the non-woven fabric; 3; the length of the notched groove is the width of the bottom wall of the formed three-dimensional bag, and the non-woven fabric is pressed out to form a U-shape and form a front wall and a rear wall; 4 the front wall and the back wall are respectively bent to form Front and rear edges; 5 Weld the front and back edges.
  • the invention has the beneficial effects that the strength of the product is increased by the integral bag structure, and the joints of the front and rear edges are fixed by welding, which is more reliable and better utilizes the edge of the bag body. Adding the strength of the product, and reducing the labor and manufacturing time and reducing the production cost, the same ability to carry larger items or heavier items. Since the non-woven bag can be recycled after use and is easy to circulate, it can also serve as an environmental protection and resource optimization.
  • the punching groove is punched out, and the bending groove is disposed on both sides of the notch groove.
  • the bottom edge is bent on the bottom wall, and in the fifth step, The bottom edge is welded to the front and rear edges, and the bottom edge is placed to enhance the strength of the product for easy soldering and easy processing.
  • the bottom edge is bent first, and then the front edge and the rear edge are bent outside the bottom edge.
  • the welding of the fifth step is performed by ultrasonic welding.
  • the joints of the front, rear and bottom edges are fixed by ultrasonic welding.
  • This fixing method is more reliable and better utilizes the edge of the bag to increase the strength of the product, and reduces the manufacturing time and the production time and reduces the production cost. With the ability to carry larger items or heavier items, the cheaper and stronger, the inverted "T" shape of the weld marks makes the product more convenient to process and produce.
  • the handle is welded to the nonwoven fabric after the first step or after the second step. Such processing facilitates the processing and use of the three-dimensional bag.
  • a non-woven three-dimensional bag wherein the non-woven three-dimensional bag is processed according to the above processing method. Specifically, the bag body 1 and the handle 2 are fixed, and the handle 2 is fixedly connected to the bag body 1.
  • the bag body 1 is folded by a non-woven fabric to form a front wall 3 and a rear wall 4.
  • the side wall 5 and the bottom wall 6 both sides of the front wall 3 are folded out of the front edge 31 in the direction of the rear wall 4, and both sides of the rear wall 4 are folded out of the rear edge 41 in the direction of the front wall 3, and the two sides of the bottom wall 6
  • the bottom edge 61 is folded laterally, and the front edge 31 is fixed to the rear edge 41 of the corresponding side by welding.
  • the bottom edge of the front edge 31 and the rear edge 41 are fixed to the bottom edge 61 by welding.
  • the weld bead 7 formed by welding the edge 31, the trailing edge 4 1 and the bottom edge 61 has an inverted "T" shape.
  • the front edge 31 and the rear edge 41 of the corresponding side are fixed by ultrasonic welding, and the bottom of the front edge 31 and the rear edge 41 are both fixed to the bottom edge 61 by ultrasonic welding.
  • the invention has the beneficial effects that the strength of the product is increased by the integral bag structure, and the joints of the front, rear and bottom edges are fixed by ultrasonic welding, which is more reliable and better utilizes the bag body.
  • the edge increases the strength of the product, and reduces manufacturing time and labor costs, and reduces the production cost.
  • the bag body 1 is provided with two bending grooves 11 in the middle portion thereof, and the bag body between the two bending grooves 11 forms the bottom edge 61.
  • a notch groove 12 is defined between the two bending grooves 11.
  • the setting of the notch groove and the bending groove can conveniently bend the bottom edge, and the size of the formed three-dimensional bag can be controlled according to the size of the notch groove.
  • the height of the bottom edge 61 is the same as the height of the weld bead 7.
  • the height of the bottom edge refers to the height of the weld bead after the bottom edge of FIG. 2 is bent, and the height of the weld mark 7 refers to the height of the transverse portion weld mark of the inverted "T" shape in FIG. 1, such a structure makes the product Fixed and reliable.
  • the bottom edge 61 is disposed on the inner side of the front edge 31 and the rear edge 41 (see FIG. 1, the inner side refers to the inner side of the formed nonwoven fabric three-dimensional bag, the same below).
  • the handle 2 is disposed on the inner side of the bag body 1.
  • the handle 2 is welded to the bag body 1 by ultrasonic waves. This structure makes the product reliable and more beautiful.

Landscapes

  • Purses, Travelling Bags, Baskets, Or Suitcases (AREA)

Abstract

一种无纺布立体袋及加工方法。其包括袋体(1)和提手(2),所述的袋体(1)由一块无纺布通过折叠形成前壁(3)、后壁(4)、侧壁(5)和底壁(6),前壁(3)折出前边沿(31),后壁(4)折出后边沿(41),所述底壁(6)折出底边沿(61),所述前边沿(31)、后边沿(41)的底部均与底边沿(61)通过焊接相固定,所述前边沿(31)、后边沿(41)、底边沿(61)焊接所形成的焊痕呈倒置的"T"字形。其加工步骤为①裁切出无纺布面料;②冲出缺口槽(12);③以缺口槽(12)的长度为底壁(6)的宽度将无纺布面料压出"U"字形;④将前壁(3)和后壁(4)分别折弯形成前边沿(31)和后边沿(41);⑤将前边沿(31)与后边沿(41)相焊接。通过一体式的袋体(1)结构使得产品的强度增大,而且减少了制造的工夫与时间并削减了生产成本。

Description

一种无纺布立体袋及加工方法
技术领域
[0001] 本发明涉及一种无纺布立体袋及加工方法。
背景技术
[0002] 以往, 在随手携带而搬运物品吋使用带提手的纸袋或布袋。 特别是女性多手拿 手包等较小的包包步行, 所以在拿着物品去往外出目的地的情况下或者拿着在 外出目的地增加的物品等返回的情况下等, 经常使用带提手的纸袋或布袋。 带 提手的纸袋较轻, 而且在折叠后变薄所以携带方便, 但反过来其强度较弱而且 形状已确定, 所以不适合搬运较重的物品和 /或体积大的物品。 与此相对, 带提 手的布袋强度较高, 形状能够配合物品的形状而变化, 所以适于搬运体积大的 物品和 /或较重的物品, 但袋自身较重, 而且不能折叠得较小, 所以存在携带不 便的问题。 进而, 布袋与纸袋等相比价值较高, 在想要为了暂吋的用途而使用 的情况下, 存在难以轻松地购买的问题。
[0003] 因此, 近年来, 要求有能够轻松地使用于暂吋的用途的、 难以损坏的、 形状容 易变化、 轻量且能够紧凑地折叠而携带的带提手袋子。 另一方面, 作为聚烯烃 薄膜制的购物袋、 具体地说是在超市等收银台使用的所谓收银袋的代替物, 提 出了无纺布制的购物袋。 但是, 虽然代替上述的带提手的纸袋或布袋而使用, 但是没有提出令人满意的带提手无纺布袋。 外出吋手拿着走的带提手的无纺布 袋, 其具有比上述购物袋多得多的使用次数, 因此, 要求更高的耐久性和强度 。 而仅通过与上述购物袋同样地热封将无纺布结合, 这可能无法制造优选的带 提手的无纺布袋, 因为普通热封结合使无纺布熔化而施加压力使其结合, 所以 结合部的厚度变薄、 变得容易损坏。 例如, 在将袋口打幵吋, 施加将袋侧面的 热封部打幵的力, 由此恐会以从带提手袋的幵口部裂幵的方式破裂。 另外, 在 放入较重的物品的情况下, 以提手从袋主体的接合部剥落的方式破损, 提手恐 会从袋主体脱落。 另外, 在放入较重的物品的情况下, 由于施加于袋底的重量 向使袋底热封结合而成的袋底部或者从袋底相连的袋主体的侧面部分施加载荷 , 恐会从该部分破裂。 因此, 可以考虑通过比热封强度更高的缝合将热封部分 结合。 所以无纺布缝制成的无纺布袋是人使用缝纫机等缝合无纺布片而制造的 , 所以制造需要工夫与吋间, 存在制造成本高, 加工困难、 耗吋的问题。
技术问题
[0004] 为解决背景技术中现有无纺布立体袋加工麻烦的问题, 本发明提供一种无纺布 立体袋及加工方法。
问题的解决方案
技术解决方案
[0005] 本发明的技术方案是: 一种无纺布立体袋, 包括袋体和提手,所述的提手与袋体 相固接, 所述的袋体由一块无纺布通过折叠形成前壁、 后壁、 侧壁和底壁, 前 壁的两侧均向后壁方向折出前边沿, 后壁的两侧均向前壁方向折出后边沿, 所 述底壁的两侧向上折出底边沿,所述前边沿与对应一侧的后边沿通过焊接相固定 , 所述前边沿、 后边沿的底部均与底边沿通过焊接相固定, 所述前边沿、 后边 沿、 底边沿焊接所形成的焊痕呈倒置的 "T"字形。
[0006] 作为本发明的一种改进, 所述袋体的中部上设有两个折弯槽, 两个折弯槽之间 的袋体形成所述的底边沿。
[0007] 作为本发明的进一步改进, 所述的两个折弯槽之间设有缺口槽。
[0008] 作为本发明的进一步改进, 所述的底边沿设于前边沿、 后边沿的内侧。
[0009] 作为本发明的进一步改进, 所述的提手与袋体通过超声波相焊接。
[0010] 一种无纺布立体袋的加工方法, 其加工步骤为①裁切出长方形的无纺布面料; ②在无纺布的中部冲出缺口槽; ③以缺口槽的长度为成型后无纺布立体袋底壁的 宽度将无纺布面料压出" U"字形并形成前壁和后壁; ④将前壁和后壁分别折弯形 成前边沿和后边沿; ⑤将前边沿与后边沿相焊接。
[0011] 作为本发明的一种改进, 在第②步吋同吋冲出折弯槽, 所述折弯槽设于缺口槽 的两侧, 在第④步吋在底壁上折弯出底边沿, 在第⑤步吋将底边沿与前边沿、 后 边沿相焊接。
[0012] 作为本发明的进一步改进, 第④步吋先折弯出底边沿, 然后折弯出的前边沿、 后边沿设于底边沿的外侧。 [0013] 作为本发明的进一步改进, 第⑤步的焊接采用超声波焊接。
[0014] 作为本发明的进一步改进, 在第①步之后或第②步之后将提手焊接于无纺布上
[0015] 一种无纺布立体袋, 所述的无纺布立体袋根据上述加工方法加工而成。
发明的有益效果
有益效果
[0016] 本发明的有益效果是, 通过一体式的袋体结构使得产品的强度增大, 而且前、 后边沿的连接处采用焊接固定, 该固定方式比较可靠且更好的利用了袋体的边 沿增加了产品的强度, 而且减少了制造的工夫与吋间并削减了生产成本, 同吋 能够搬运体积更大的物品或者更重的物品。 无纺布袋能够在使用后回收、 容易 循环, 所以也能够起到环境保护以及资源优化的作用。
对附图的简要说明
附图说明
[0017] 附图 1为本发明实施例的结构示意图。
[0018] 附图 2为附图 1中袋体 1展幵吋的结构示意图。
[0019] 附图 3为附图 1中袋体 1完全展幵吋的结构示意图。
[0020] 图中, 1、 袋体; 11、 折弯槽; 12、 缺口槽; 2、 提手; 3、 前壁; 31、 前边沿 ; 4、 后壁; 41、 后边沿; 5、 侧壁; 6、 底壁; 61、 底边沿; 7、 焊痕。
本发明的实施方式
[0021] 下面结合附图对本发明实施例作进一步说明:
[0022] 由图 1结合图 2、 3所示, 一种无纺布立体袋及加工方法, 其加工步骤为①裁切 出长方形的无纺布面料; ②在无纺布的中部冲出缺口槽; ③以缺口槽的长度为成 型后无纺布立体袋底壁的宽度将无纺布面料压出 "U"字形并形成前壁和后壁; ④ 将前壁和后壁分别折弯形成前边沿和后边沿; ⑤将前边沿与后边沿相焊接。 本发 明的有益效果是, 通过一体式的袋体结构使得产品的强度增大, 而且前、 后边 沿的连接处采用焊接固定, 该固定方式比较可靠且更好的利用了袋体的边沿增 加了产品的强度, 而且减少了制造的工夫与吋间并削减了生产成本, 同吋能够 搬运体积更大的物品或者更重的物品。 无纺布袋能够在使用后回收、 容易循环 , 所以也能够起到环境保护以及资源优化的作用。
[0023] 在第②步吋同吋冲出折弯槽, 所述折弯槽设于缺口槽的两侧, 在第④步吋在底 壁上折弯出底边沿, 在第⑤步吋将底边沿与前边沿、 后边沿相焊接, 底边沿的设 置增强了产品的强度, 便于焊接, 便于加工。
[0024] 第④步吋先折弯出底边沿, 然后折弯出的前边沿、 后边沿设于底边沿的外侧。
这样的加工方式更简单, 同吋保证产品的强度。
[0025] 第⑤步的焊接采用超声波焊接。 前、 后、 底边沿的连接处采用超声波焊接相固 定, 该固定方式比较可靠且更好的利用了袋体的边沿增加了产品的强度, 而且 减少了制造的工夫与吋间并削减了生产成本, 同吋能够搬运体积更大的物品或 者更重的物品, 廉价且具有强度, 焊痕呈倒置的 "T"字形使得产品加工、 生产更 加方便, 强度更高。
[0026] 在第①步之后或第②步之后将提手焊接于无纺布上。 这样的加工便于立体袋的 加工、 使用。
[0027] 一种无纺布立体袋, 所述的无纺布立体袋根据上述加工方法加工而成。 具体的 说, 其包括袋体 1和提手 2,所述的提手 2与袋体 1相固接, 所述的袋体 1由一块无纺 布通过折叠形成前壁 3、 后壁 4、 侧壁 5和底壁 6, 前壁 3的两侧均向后壁 4方向折 出前边沿 31, 后壁 4的两侧均向前壁 3方向折出后边沿 41, 所述底壁 6的两侧向上 折出底边沿 61,所述前边沿 31与对应一侧的后边沿 41通过焊接相固定, 所述前边 沿 31、 后边沿 41的底部均与底边沿 61通过焊接相固定, 所述前边沿 31、 后边沿 4 1、 底边沿 61焊接所形成的焊痕 7呈倒置的" T"字形。 所述前边沿 31与对应一侧的 后边沿 41通过超声波焊接相固, 所述前边沿 31、 后边沿 41的底部均与底边沿 61 通过超声波焊接相固定。 本发明的有益效果是, 通过一体式的袋体结构使得产 品的强度增大, 而且前、 后、 底边沿的连接处采用超声波焊接相固定, 该固定 方式比较可靠且更好的利用了袋体的边沿增加了产品的强度, 而且减少了制造 的工夫与吋间并削减了生产成本, 同吋能够搬运体积更大的物品或者更重的物 品, 廉价且具有强度, 焊痕呈倒置的 "T"字形使得产品加工、 生产更加方便, 强 度更高。 而且无纺布袋能够在使用后回收、 容易循环, 所以也能够起到环境保 护以及资源优化的作用。
[0028] 所述袋体 1的中部上设有两个折弯槽 11, 两个折弯槽 11之间的袋体形成所述的 底边沿 61。 所述的两个折弯槽 11之间设有缺口槽 12。 缺口槽和折弯槽的设置, 可以方便的折弯底边沿, 同吋可以根据缺口槽的大小, 控制成型无纺布立体袋 的大小。 所述底边沿 61的高度与焊痕 7的高度相同。 底边沿的高度指图 2吋底边 沿折弯后用于焊接吋的高度, 焊痕 7的高度是指附图 1中倒置 "T"字形的横向部焊 痕的高度, 这样的结构使得的产品固定可靠。
[0029] 所述的底边沿 61设于前边沿 31、 后边沿 41的内侧 (参看附图 1, 内侧是指成型 无纺布立体袋的内侧, 下同) 。 所述的提手 2设于袋体 1的内侧。 所述的提手 2与 袋体 1通过超声波相焊接。 这样的结构使得产品固定可靠, 更加美观。
[0030] 各位技术人员须知: 虽然本发明已按照上述具体实施方式做了描述, 但是本发 明的发明思想并不仅限于此发明, 任何运用本发明思想的改装, 都将纳入本专 利专利权保护范围内。

Claims

权利要求书
一种无纺布立体袋, 包括袋体 (1) 和提手 (2) ,其特征在于:所述的 提手 (2) 与袋体 (1) 相固接, 所述的袋体 (1) 由一块无纺布通过 折叠形成前壁 (3) 、 后壁 (4) 、 侧壁 (5) 和底壁 (6) , 前壁 (3 ) 的两侧均向后壁 (4) 方向折出前边沿 (31) , 后壁 (4) 的两侧均 向前壁 (3) 方向折出后边沿 (41) , 所述底壁 (6) 的两侧向上折出 底边沿 (61) ,所述前边沿 (31) 与对应一侧的后边沿 (41) 通过焊 接相固定, 所述前边沿 (31) 、 后边沿 (41) 的底部均与底边沿 (61 ) 通过焊接相固定, 所述前边沿 (31) 、 后边沿 (41) 、 底边沿 (61 ) 焊接所形成的焊痕 (7) 呈倒置的" T"字形。
根据权利要求 1所述的无纺布立体袋, 其特征在于所述袋体 (1) 的中 部上设有两个折弯槽 (11) , 两个折弯槽 (11) 之间的袋体形成所述 的底边沿 (61) 。
根据权利要求 2所述的无纺布立体袋, 其特征在于所述的两个折弯槽
(11) 之间设有缺口槽 (12) 。
根据权利要求 1所述的无纺布立体袋, 其特征在于所述的底边沿 (61 ) 设于前边沿 (31) 、 后边沿 (41) 的内侧。
根据权利要求 1所述的无纺布立体袋, 其特征在于所述的提手 (2) 与 袋体 (1) 通过超声波相焊接。
一种无纺布立体袋的加工方法, 其特征在于:其加工步骤为①裁切出长 方形的无纺布面料; ②在无纺布的中部冲出缺口槽; ③以缺口槽的长 度为成型后无纺布立体袋底壁的宽度将无纺布面料压出 "U"字形并形 成前壁和后壁; ④将前壁和后壁分别折弯形成前边沿和后边沿; ⑤将 前边沿与后边沿相焊接。
根据权利要求 6所述的无纺布立体袋加工方法, 其特征在于在第②步 吋同吋冲出折弯槽, 所述折弯槽设于缺口槽的两侧, 在第④步吋在底 壁上折弯出底边沿, 在第⑤步吋将底边沿与前边沿、 后边沿相焊接。 根据权利要求 7所述的无纺布立体袋加工方法, 其特征在于第④步吋 先折弯出底边沿, 然后折弯出的前边沿、 后边沿设于底边沿的外侧。
[权利要求 9] 根据权利要求 6所述的无纺布立体袋加工方法, 其特征在于第⑤步的 焊接采用超声波焊接。
[权利要求 10] 根据权利要求 6所述的无纺布立体袋加工方法, 其特征在于在第①步 之后或第②步之后将提手焊接于无纺布上。
PCT/CN2016/084962 2015-07-10 2016-06-06 一种无纺布立体袋及加工方法 WO2017008599A1 (zh)

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