WO2018218593A1 - 吸尘器用耐水洗海帕 - Google Patents

吸尘器用耐水洗海帕 Download PDF

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Publication number
WO2018218593A1
WO2018218593A1 PCT/CN2017/086809 CN2017086809W WO2018218593A1 WO 2018218593 A1 WO2018218593 A1 WO 2018218593A1 CN 2017086809 W CN2017086809 W CN 2017086809W WO 2018218593 A1 WO2018218593 A1 WO 2018218593A1
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Prior art keywords
fiber
weight
propylene
vacuum cleaner
layer
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PCT/CN2017/086809
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English (en)
French (fr)
Inventor
朱桂林
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苏州佳亿达电器有限公司
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Priority to CN201780001768.2A priority Critical patent/CN107820439A/zh
Priority to PCT/CN2017/086809 priority patent/WO2018218593A1/zh
Publication of WO2018218593A1 publication Critical patent/WO2018218593A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/02—Loose filtering material, e.g. loose fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/067—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of fibres or filaments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10009—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets
    • B32B17/10036—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets comprising two outer glass sheets
    • B32B17/10045—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets comprising two outer glass sheets with at least one intermediate layer consisting of a glass sheet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/08—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer the fibres or filaments of a layer being of different substances, e.g. conjugate fibres, mixture of different fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/02—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising animal or vegetable substances, e.g. cork, bamboo, starch
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B9/045—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B9/047—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material made of fibres or filaments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0276—Polyester fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/06—Vegetal fibres
    • B32B2262/062—Cellulose fibres, e.g. cotton
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/101—Glass fibres

Definitions

  • the invention relates to a filter material, in particular to a water-resistant seabass for a vacuum cleaner.
  • Haipa a transliteration of HEPA, is a highly efficient filter paper that filters fine particles in the air and reduces secondary pollution.
  • Haipa is a very important high-frequency component used in vacuum cleaners.
  • various manufacturers are slow to develop more high-quality and efficient Haipa, but the existing Haipa is After using for a period of time, it is prone to blockage, resulting in poor air exhaust of the vacuum cleaner, causing the temperature of the motor to rise, which seriously affects the life of the motor; or, some dust bags have a good exhaust effect, but the dust filtering effect is not good, resulting in Under the action of large winds, the fine dust passes through the dust bag to discharge the vacuum cleaner, which causes secondary pollution to the indoor environment and seriously affects the respiratory health of the human body.
  • Haipa which has poor filtering effect, also affects the working environment of the motor, so that fine dust is drilled into the motor, which seriously affects the normal operation of the motor.
  • Haipa is not resistant to water washing, and after repeated washing and drying, it is prone to irreversible deformation, and when Haipa is assembled again on the vacuum cleaner, the sealing performance on the periphery is lowered, and the filtering effect is affected.
  • the object of the present invention is to provide a water-resistant washable seabasket for a vacuum cleaner with high particle removal rate and smooth exhaust, which has a simple structure, low manufacturing cost, low wind resistance, no dust accumulation, and no congestion. Can withstand repeated washing.
  • a water-resistant washable seabasin for a vacuum cleaner which is provided with a first sponge layer, a glass fiber layer, a modified fiber layer and a second sponge layer in order from top to bottom, wherein the modified fiber layer comprises the following parts by weight of material :
  • the vacuum cleaner is a water-resistant seabass, wherein the modified fiber layer comprises the following parts by weight:
  • Propylene-vinyl acetate copolymer fiber filaments 45 to 60 parts by weight
  • the vacuum cleaner is a water-resistant washable seaweed, wherein the propylene-vinyl acetate copolymer fiber yarn has a propylene monomer content of 26 to 32% by weight, and the balance is a vinyl acetate monomer.
  • the vacuum cleaner is a water-resistant washable seaweed, wherein the propylene-vinyl acetate copolymer fiber filament has a number average molecular weight of 12,000 to 15000 g/mol.
  • the vacuum cleaner is a water-resistant washable seaweed, wherein the modified fiber layer further comprises 10 to 12 parts by weight of poly- ⁇ -butyrolactone fiber.
  • the vacuum cleaner is water-resistant sea diaper, wherein the poly- ⁇ -butyrolactone has a number average molecular weight of 7,000 to 9000 g/mol.
  • the vacuum cleaner uses a water-resistant seabasket, wherein a thickness ratio of the first sponge layer, the glass fiber layer, the modified fiber layer and the second sponge layer is 1:0.2:0.1:1.
  • the beneficial effects of the present invention are as follows: in the present invention, the structure of the conventional Haipa is improved, and a double-layer sponge layer is used as a base layer, and a new glass fiber layer and a modified fiber layer are set in the middle, and propylene-vinyl acetate copolymerization is introduced. Filament and kapok fiber improve the filtration performance of Haipa and reduce the wind resistance of Haipa. At the same time, the modified layer can effectively improve the flow stability in the air duct of the vacuum cleaner, due to the propylene-vinyl acetate copolymer fiber. The introduction of propylene in the silk improves the washing resistance of the seaweed.
  • a water-resistant washable seabasket for a vacuum cleaner which is provided with a first sponge layer, a glass fiber layer, a modified fiber layer and a second sponge layer in order from top to bottom, wherein the modified fiber layer includes the following Parts by weight:
  • the propylene-vinyl acetate copolymer is a random copolymer, and the synthesis method thereof is the same as that of the polyvinyl acetate. It is only necessary to mix the monomers at a design ratio at the time of synthesis to start the polymerization.
  • the propylene-vinyl acetate copolymer fiber filament not only has the excellent rigidity and weather resistance of polyvinyl acetate, but also improves the toughness of the fiber filament due to the modification of propylene, increases the impact strength of the fiber filament, and reduces the fiber filament. The magnitude of the deformation after repeated washing.
  • Kapok fiber has been found to be used in combination with propylene-vinyl acetate copolymer fiber filaments to synergistically reduce the wind resistance of Haipa and facilitate lightweight design.
  • modified fiber layer comprises the following parts by weight:
  • Propylene-vinyl acetate copolymer fiber filaments 45 to 60 parts by weight
  • the propylene-vinyl acetate copolymer fiber yarn has a propylene monomer content of 26 to 32% by weight, and the balance is a vinyl acetate monomer. It has been found that when the ratio of propylene monomer to vinyl acetate monomer is limited, Haipa can obtain better water wash resistance.
  • the number average molecular weight of the propylene-vinyl acetate copolymer fiber yarn is from 12,000 to 15,000 g/mol. It has been found that when the number average molecular weight of the propylene-vinyl acetate copolymer fiber filament is defined, more excellent water wash resistance and lower wind resistance can be obtained, and therefore, the number average molecular weight thereof should be limited.
  • the modified fiber layer further comprises 10 to 12 parts by weight of the poly- ⁇ -butyrolactone fiber.
  • the number average molecular weight of the poly- ⁇ -butyrolactone fiber filament is preferably 7,000 to 9000 g/mol.
  • Poly- ⁇ -butyrolactone fiber is used to improve the shrinkage deformation amplitude of Haipa after washing and drying.
  • the addition amount and number average molecular weight of the poly- ⁇ -butyrolactone fiber should be strictly limited because the addition amount and the number average molecular weight are selected according to the specific combination of the above-mentioned propylene-vinyl acetate copolymer fiber yarn and kapok fiber.
  • the deviation from the preferred range will result in a mismatch with this particular combination, so that not only does it not have a positive effect, but it will increase the wind resistance of the Hypa, resulting in poor airflow of the vacuum cleaner.
  • the thickness ratio of the first sponge layer, the glass fiber layer, the modified fiber layer and the second sponge layer is 1:0.2:0.1:1.
  • Table 1 lists the main parameters of the modified fiber layer of Haipa in different examples and the performance test data of the prepared Haipa:
  • Table 2 lists the main parameters of the modified fiber layer in the different proportions of Haipa and the performance test data of the prepared Haipa:

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  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Laminated Bodies (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)

Abstract

一种吸尘器用耐水洗海帕，从上至下依次设有第一海绵层、玻璃纤维层、改性纤维层和第二海绵层，其中，改性纤维层包括以下重量份的材料：丙烯-乙酸乙烯酯共聚物纤维丝20～100重量份和木棉纤维5～50重量份。对常规海帕的结构进行改进，以双层海绵层为基层，并在中间设立了新的玻璃纤维层和改性纤维层，通过引入丙烯-乙酸乙烯酯共聚物纤维丝和木棉纤维，提高了海帕的过滤性能，降低了海帕的风阻，同时，改性层可有效改善吸尘器风道内的气流流动稳定性，由于丙烯-乙酸乙烯酯共聚物纤维丝中丙烯的引入，提高了海帕的耐水洗能力。

Description

吸尘器用耐水洗海帕 技术领域
本发明涉及一种过滤材料，具体涉及一种吸尘器用耐水洗海帕。
背景技术
海帕，是HEPA的音译，HEPA是一种高效的过滤纸料，可过滤空气中的细微颗粒，减小二次污染。众所周知，海帕在吸尘器中是一种非常重要的高频次使用的部件，但出于成本控制等因素，各个生产厂家对于更加优质高效的海帕的研发进度慢，然而现有的海帕在使用一段时间后，易发生堵塞，导致吸尘器排风不畅，造成电动机温度升高，从而严重影响电动机的寿命；或者，有些尘袋排风效果还行，但对灰尘的过滤效果不佳，造成细小粉尘在大风力的作用下，穿过尘袋排出吸尘器，从而对室内环境造成二次污染，严重影响了人体的呼吸健康。同时，过滤效果较差的海帕还会影响电动机的工作环境，使细小灰尘钻进电动机，从而严重影响电动机的正常工作。现有技术中的海帕不耐水洗，在反复几次清洗和晾晒后，其极易产生不可逆的形变，导致海帕再次组装在吸尘器上时，对四周的密封性能降低，过滤效果受到影响。
发明内容
针对现有技术的不足之处，本发明的目的在于提供一种微粒去除率高、排风顺畅的吸尘器用耐水洗海帕，其结构简单，制造成本低，风阻低，不积尘，不拥堵，可耐受反复水洗。
本发明的技术方案概述如下：
一种吸尘器用耐水洗海帕，其从上至下依次设有第一海绵层、玻璃纤维层、改性纤维层和第二海绵层，其中，所述改性纤维层包括以下重量份的材料：
丙烯-乙酸乙烯酯共聚物纤维丝    20～100重量份；
木棉纤维                       5～50重量份。
优选的是，所述的吸尘器用耐水洗海帕，其中，所述改性纤维层包括以下重量份的材料：
丙烯-乙酸乙烯酯共聚物纤维丝    45～60重量份；
木棉纤维                       25～30重量份。
优选的是，所述的吸尘器用耐水洗海帕，其中，所述丙烯-乙酸乙烯酯共聚物纤维丝中，丙烯单体含量占26～32wt％，其余为乙酸乙烯酯单体。
优选的是，所述的吸尘器用耐水洗海帕，其中，所述丙烯-乙酸乙烯酯共聚物纤维丝的数均分子量为12000～15000g/mol。
优选的是，所述的吸尘器用耐水洗海帕，其中，所述改性纤维层还包括10～12重量份的聚β-丁内酯纤维丝。
优选的是，所述的吸尘器用耐水洗海帕，其中，所述聚β-丁内酯的数均分子量为7000～9000g/mol。
优选的是，所述的吸尘器用耐水洗海帕，其中，所述第一海绵层、玻璃纤维层、改性纤维层和第二海绵层的厚度比为1∶0.2∶0.1∶1。
本发明的有益效果是：本案通过对常规海帕的结构进行改进，以双层海绵层为基层，并在中间设立了新的玻璃纤维层和改性纤维层，通过引入丙烯-乙酸乙烯酯共聚物纤维丝和木棉纤维，提高了海帕的过滤性能，降低了海帕的风阻，同时，引入的改性层可有效改善吸尘器风道内的气流流动稳定性，由于丙烯-乙酸乙烯酯共聚物纤维丝中丙烯的引入，提高了海帕的耐水洗能力。
具体实施方式
下面结合实施例对本发明做进一步的详细说明，以令本领域技术人员参照说明书文字能够据以实施。
本案提出一实施例的吸尘器用耐水洗海帕，其从上至下依次设有第一海绵层、玻璃纤维层、改性纤维层和第二海绵层，其中，所述改性纤维层包括以下重量份的材料：
丙烯-乙酸乙烯酯共聚物纤维丝    20～100重量份；
木棉纤维                       5～50重量份。
研究发现，当在传统的海绵层中插入改性纤维层，可通过改性纤维层的特点来对海帕进行优化和升级。丙烯-乙酸乙烯酯共聚物是无规共聚物，其合成方法和聚乙酸乙烯酯的合成条件相同，只需在合成时将两者单体按设计比例混匀即可开始进行聚合。丙烯-乙酸乙烯酯共聚物纤维丝不仅具有聚乙酸乙烯酯的优异的刚性和耐候性，还由于丙烯的改性，提高了纤维丝的韧性，增加了纤维丝的抗冲击强度，以降低纤维丝在反复水洗后的形变幅度。木棉纤维被发现与丙烯-乙酸乙烯酯共聚物纤维丝混合使用后，可协同降低海帕的风阻，并利于轻量化设计。
作为本案又一实施例，其中，改性纤维层包括以下重量份的材料：
丙烯-乙酸乙烯酯共聚物纤维丝    45～60重量份；
木棉纤维                       25～30重量份。
研究发现，当对丙烯-乙酸乙烯酯共聚物纤维丝和木棉纤维的添加量进行进一步限定后，可获得更出色的耐水洗效果和更低的初阻力。
作为本案又一实施例，其中，丙烯-乙酸乙烯酯共聚物纤维丝中，丙烯单体含量占26～32wt％，其余为乙酸乙烯酯单体。研究发现，当对丙烯单体和乙酸乙烯酯单体的配比进行限定后，可使海帕获得更佳的耐水洗性能。
作为本案又一实施例，其中，丙烯-乙酸乙烯酯共聚物纤维丝的数均分子量为12000～15000g/mol。研究发现，当对丙烯-乙酸乙烯酯共聚物纤维丝的数均分子量进行限定后，可获得更出色的耐水洗性能和更低的风阻，因此，其数均分子量应被限制。
作为本案又一实施例，其中，改性纤维层还包括10～12重量份的聚β-丁内酯纤维丝。该聚β-丁内酯纤维丝的数均分子量优选为7000～9000g/mol。聚β-丁内酯纤维丝用于改善海帕在水洗晾干后的收缩形变幅度。但聚β-丁内酯纤维丝的添加量和数均分子量都应被严格限制，因为该添加量和数均分子量的选择是根据上述丙烯-乙酸乙烯酯共聚物纤维丝和木棉纤维的特定组合而开发的，偏离优选的范围将导致与该特定组合不匹配，从而不仅不起积极效果，反而会增加海帕的风阻，造成吸尘器排风不畅。
优选的，第一海绵层、玻璃纤维层、改性纤维层和第二海绵层的厚度比为1∶0.2∶0.1∶1。
表一列出不同实施例的海帕中改性纤维层的主要参数及制得的海帕的性能测试数据：
表一
Figure PCTCN2017086809-appb-000001
表二列出不同对比例的海帕中改性纤维层的主要参数及制得的海帕的性能测试数据：
表二
Figure PCTCN2017086809-appb-000002
Figure PCTCN2017086809-appb-000003
尽管本发明的实施方案已公开如上，但其并不仅仅限于说明书和实施方式中所列运用，它完全可以被适用于各种适合本发明的领域，对于熟悉本领域的人员而言，可容易地实现另外的修改，因此在不背离权利要求及等同范围所限定的一般概念下，本发明并不限于特定的细节。

Claims (7)

  1. 一种吸尘器用耐水洗海帕，其从上至下依次设有第一海绵层、玻璃纤维层、改性纤维层和第二海绵层，其中，所述改性纤维层包括以下重量份的材料：
    丙烯-乙酸乙烯酯共聚物纤维丝           20～100重量份；
    木棉纤维                              5～50重量份。
  2. 根据权利要求1所述的吸尘器用耐水洗海帕，其特征在于，所述改性纤维层包括以下重量份的材料：
    丙烯-乙酸乙烯酯共聚物纤维丝           45～60重量份；
    木棉纤维                              25～30重量份。
  3. 根据权利要求1所述的吸尘器用耐水洗海帕，其特征在于，所述丙烯-乙酸乙烯酯共聚物纤维丝中，丙烯单体含量占26～32wt％，其余为乙酸乙烯酯单体。
  4. 根据权利要求1所述的吸尘器用耐水洗海帕，其特征在于，所述丙烯-乙酸乙烯酯共聚物纤维丝的数均分子量为12000～15000g/mol。
  5. 根据权利要求2所述的吸尘器用耐水洗海帕，其特征在于，所述改性纤维层还包括10～12重量份的聚β-丁内酯纤维丝。
  6. 根据权利要求5所述的吸尘器用耐水洗海帕，其特征在于，所述聚β-丁内酯的数均分子量为7000～9000g/mol。
  7. 根据权利要求1所述的吸尘器用耐水洗海帕，其特征在于，所述第一海绵层、玻璃纤维层、改性纤维层和第二海绵层的厚度比为1∶0.2∶0.1∶1。
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