KR900005001B1 - Nonwoven fabric for dispersion of radar - Google Patents

Nonwoven fabric for dispersion of radar Download PDF

Info

Publication number
KR900005001B1
KR900005001B1 KR1019870012581A KR870012581A KR900005001B1 KR 900005001 B1 KR900005001 B1 KR 900005001B1 KR 1019870012581 A KR1019870012581 A KR 1019870012581A KR 870012581 A KR870012581 A KR 870012581A KR 900005001 B1 KR900005001 B1 KR 900005001B1
Authority
KR
South Korea
Prior art keywords
nonwoven fabric
fiber
fabric
stainless wire
radar
Prior art date
Application number
KR1019870012581A
Other languages
Korean (ko)
Other versions
KR890008378A (en
Inventor
홍순기
Original Assignee
주식회사 남양어망
홍순기
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 주식회사 남양어망, 홍순기 filed Critical 주식회사 남양어망
Priority to KR1019870012581A priority Critical patent/KR900005001B1/en
Publication of KR890008378A publication Critical patent/KR890008378A/en
Application granted granted Critical
Publication of KR900005001B1 publication Critical patent/KR900005001B1/en

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4209—Inorganic fibres
    • D04H1/4218—Glass fibres
    • D04H1/4226—Glass fibres characterised by the apparatus for manufacturing the glass fleece
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4382—Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
    • D04H1/74—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being orientated, e.g. in parallel (anisotropic fleeces)

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Nonwoven Fabrics (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)

Abstract

A radar scattering nonwoven fabric is mfd. by folding in double a nonwoven fabric formed by uniformly mixing 70-90 wt.% mixtured fiber (I) with 30-10 wt.% stainless wire (II) of 0.01-0.09 m/m dia. and 10- 100 m/m length, the piecs of stainless wire being arranged to be in parallel round in one dircction and, when folded, to be perpendicular to one another rows in the folded parts. (I) comprises 60-70 % of 20-30 S vinylon spandex fiber, 20-30% of 20-30S nylon spandex fiber and 5-15 % of 20-30S polyester spadex fiber.

Description

레이다 산란 부직포Radar Scattering Nonwovens

제1도는 본 발명에 따른 부직포를 직교합포시키기 이전 상태의 평행성 부직포를 나타낸 것이며,Figure 1 shows the parallel nonwoven fabric of the state before orthogonal fabric of the nonwoven fabric according to the present invention,

제2도는 제1도에 따른 평행성 부직포를 직교합포시킨후의 상태를 나타낸 도면이다.2 is a view showing a state after orthogonal fabric of the parallel nonwoven fabric according to FIG.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

1 : 혼합섬유 2 : 스텐레스와이어1: Mixed Fiber 2: Stainless Wire

3 : 평형행성 부직포3: equilibrium nonwoven fabric

본 발명은 레이다 산란 부직포에 관한 것으로서, 더욱 상세하게는 스텐레스와이어가 일방향성(一方向性)으로 혼합된 평행성 부직포를 직각으로 직교합포(直交合布)시켜줌으로서 X-밴드빔의 방향성을 없애주고 또 인열강도도 높아지게되도록 한 반영구적인 레이다 산란 부직포에 관한 것이다.The present invention relates to a radar scattering nonwoven fabric, and more particularly, to remove the directivity of the X-band beam by orthogonal fabric of the parallel nonwoven fabric in which the stainless wire is unidirectionally mixed. It is about a semi-permanent radar scattering nonwoven fabric that gives a higher tear strength.

일반적으로 레이다 산란(Radar Scrattering)효과를 갖는 직포 또는 부직포는 각종 산업적 목적은 물론 군사적 목적에 까지 매우 중요하고도 다양하게 필요로 하는 것으로서, 이러한 레이다 산란 효과를 갖는 직포등에 대한 제조기술의 개발이 절실히 요청되고 있는 실정이다.In general, a woven or nonwoven fabric having a radar scattering effect is very important and diversely necessary for various industrial purposes as well as military purposes, and development of manufacturing technology for such woven fabric having a radar scattering effect is urgently needed. It is requested.

이와같은 레이다 산란효과를 부여해 준 직포나 부직포에 대한 종래 기술의 대표적인 예를 들어보면, 스웨덴 바라쿠다사가 스판사(絲)에 매우 미세한 스텐레스와이어를 일정한 길이로 절단해서 혼합시켜서 짠 방적사를 경사와 위사로 해서 제직한 직포를 개발하였는데, 이러한 방법으로 제조된 직포는 X-밴드빔 시험에서 -12 내지 -13데시빌을 나타나게 되어 레이다 산란효과는 좋으나, 그 제조공정이 복잡하여 직포까지 만들기 위해서는 상당한 시일이 소요되고 생산비용도 많이 들게되는 결점이 있었다.Representative examples of the prior art for woven or nonwoven fabrics that have given such a radar scattering effect include a yarn spun and warp weaving yarn which is made by cutting and mixing a very fine stainless steel wire into a span yarn. We developed a woven fabric, and the woven fabric produced by this method showed -12 to -13 decibels in the X-band beam test, so the radar scattering effect was good, but the manufacturing process was complicated, and a considerable amount of seal was required to make the woven fabric. There was a drawback that it required a lot of production costs.

또한, 부직포에다 미세한 스텐레스와이어를 일정길이로 절단해서 이를 무정형으로 산포하여 레이다 산란 부직포를 제조하는 기술도 개발되어 있으나, 이러한 부직포의 경우에는 그 부직포위에 산포된 스텐레스와이어가 정확하게 직교(直交)현상을 이루지 못하기 때문에 X-밴드빔 시험결과 부분적으로 서로 다른 산란효과 즉 부분에따라 대략 -7 내지 -12데시빌의 범위의 일정치 못한 산란효과가 나타나게 되어 완전한 산란효과를 기대할 수가 없었다.In addition, a technique for manufacturing a radar scattering nonwoven fabric by cutting a fine stainless wire into a non-woven fabric and dispersing it in an amorphous form has been developed, but in the case of such a nonwoven fabric, the stainless wire scattered on the nonwoven fabric has a precise orthogonal phenomenon. As a result, the X-band beam test resulted in partially different scattering effects, i.e., inconsistent scattering effects in the range of about -7 to -12 decibels.

한편, 국내에서도 최근 레이다 산란 부직포의 제조에 관해 상당한 관심을 갖게 되었는바, 그중 근래들어 사용되고 있는 레이다 산락 부직포 기술의 예를 들어보면, 나일론 필라멘트사와 12미크론의 폴리에스터 필름에 알루미늄을 진공증착시켜 놓은 것을 아주 좁게 절단해서 혼연하여 경사간격 3m/m, 위사간격 3m/m가 되는 직사각형으로 제직한 나일론 직물이 있다. 그런데 이러한 직물은 X-밴드빔 시험에서 -12데시빌까지 나타내기는 하였으나, 그 직물의 산란효과가 부분적으로 일정치가 않아 심한 경우에는 -6데시빌을 나타내기도 한다.On the other hand, in Korea, there has been a considerable interest in the manufacture of radar scattering nonwoven fabrics recently. Among the radar scattering nonwoven fabrics used in recent years, aluminum is vacuum-deposited on nylon filament yarn and 12 micron polyester film. There is a nylon fabric woven into a rectangular fabric with a very narrow cut, kneaded to a warp interval of 3 m / m and a weft gap of 3 m / m. Although these fabrics showed up to -12 decibels in the X-band beam test, the scattering effect of the fabrics was partially inconsistent, resulting in -6 decibels in severe cases.

그리고 특히 이 직물의 결점은 자연에 장시간 방치해 두게되면 날이갈수록 산란효과가 저하되게 되는 결정적인 결점을 갖고 있는데, 그 이유는 이 직물은 대기중에서 장시간 노출되는 경우 그 직물에 함유되어져 있는 진공증착된 얇은 알루미늄막이 공기적 혹은 전기적이온에 의해 산화현상을 일으켜 전도성을 띠고있었던 것이 비전도성으로 변화되기 때문에 레이다 산란 효과가 떨어지게 되는 것으로 나타났다.In particular, the defect of this fabric has a decisive defect that the scattering effect decreases with time when it is left in nature for a long time, because the fabric is vacuum-deposited in the fabric when exposed to the air for a long time. The thin aluminum film was oxidized due to air or electric ions, and the conductivity of the thin aluminum film was changed to non-conductive.

따라서, 본 발명은 상기와 같은 종래 기술의 제문제점을 해소시켜 주기 위해 발명된 것으로서, 기본섬유에 혼합되어지는 스텐레스와이어가 직교현상을 이루도록 해줌으로써 전자파의 산란효과가 정확하고 어느방향에서 조사되는 전자파던지 방향성 없이 정확하게 산란시켜주는 효과를 나타내고, 또 자연에 노출된 상태에서도 반영구적으로 산란효과가 지속될 뿐아니라, 짧은 시간에도 대량생산이 가능한 레이다 산란 부직포를 제공하는데 그 목적이 있다.Therefore, the present invention is invented to solve the problems of the prior art as described above, by the orthogonal phenomena of the stainless wire mixed with the base fiber to achieve the scattering effect of the electromagnetic wave is irradiated from any direction It aims to provide a radar scattering nonwoven fabric that exhibits the effect of scattering accurately without throwing direction, and persists not only semi-permanently even when exposed to nature, but also mass production in a short time.

이하 본 발명을 상세히 설명한다.Hereinafter, the present invention will be described in detail.

본 발명은 레이다 산란 부직포를 제조함에 있어서, 20~30S 비닐론 스판섬유 60~70%와 20~30S 나일론 스판섬유 20~30% 및 20~30S 폴리에스터 스판섬유 5~15%를 혼합조성 시켜서된 혼합섬유(1)와, 직경이 0.01~0.09m/m이고 길이가 10~100m/m인 스텐레스와이어(2)가 70~90중량% : 30~10중량%로 균일하게 혼합되면서, 그중 스텐레스와이어(2)가 일방향성을 갖도록 형성된 평행성(平行性)부직포(3)가 직각형태로 직교합포되어 구성된 것을 그 특징으로 한다.In the present invention, in the preparation of the radar scattering nonwoven fabric, 20 to 30S vinylon span fiber 60 to 70% and 20 to 30S nylon span fiber 20 to 30% and 20 to 30S polyester span fiber 5-15% mixed composition The fiber 1 and the stainless wire 2 having a diameter of 0.01 to 0.09 m / m and a length of 10 to 100 m / m are uniformly mixed at 70 to 90 wt%: 30 to 10 wt%, of which stainless steel ( 2) is characterized in that the parallel nonwoven fabric (3) formed so as to have a unidirectional configuration composed of orthogonal fabric in a rectangular form.

이와같은 본 발명을 첨부한 도면과 함께 더욱 상세히 설명하면 다음과 같다.The present invention will be described in more detail with reference to the accompanying drawings as follows.

본 발명은 레이저 산란 부직포를 제조함에 있어 그 원료섬유로서 비닐론 스판섬유와 나일론 스판섬유 및 폴리에스터 스판섬유의 혼합섬유(1)에다 스텐레스와이어(2)를 70~90% : 30~10%의 중량비로 균일하게 혼합시켜서 사용되는바, 이때 혼합섬유(1)는 20~30S 비닐론 스판섬유 60~70%, 20~30S 나일론 스판섬유 20~30%, 20~30S 폴리에스터 스판섬유 5~15%가 혼합된 것으로 이루어진 혼합사를 제조해서 사용하고, 스텐레스와이어(2)는 그 직경이 0.01~0.09m/m인 것을 10~100m/m 기장으로 절단해서 사용한다.In the present invention, in manufacturing a laser scattering nonwoven fabric, as a raw fiber, a mixed ratio of vinylon span fiber, nylon span fiber and polyester span fiber (1) to stainless wire (2) of 70 to 90%: 30 to 10% by weight ratio It is used by mixing uniformly, wherein the mixed fiber (1) is 20 ~ 30S vinylon span fiber 60 ~ 70%, 20 ~ 30S nylon span fiber 20 ~ 30%, 20 ~ 30S polyester span fiber 5 ~ 15% A mixed yarn made of a mixture is produced and used, and the stainless wire 2 is cut into 10 to 100 m / m length having a diameter of 0.01 to 0.09 m / m and used.

이와같은 혼합섬유(1)와 스텐레스와이어(2)를 혼합시킬 때 제1도에 나타낸 바와같이 스텐레스와이어(2)를 부직포(3)의 한방향으로만 평행되게 산포시켜 평행성 부직포(3)로 제조하게 되는데, 이 평행성 부직포(3)는 1㎡ 당량이 28-36g이 되도록 하는 경우 하나의 스텐레스와이어(2)와 또 다른 와이어(2)의 평균간격이 0.3~0.8m/m이 되도록 한다.When the mixed fibers 1 and the stainless wire 2 are mixed, the stainless wire 2 is distributed in parallel in only one direction of the nonwoven fabric 3 as shown in FIG. 1 to prepare the parallel nonwoven fabric 3. This parallel nonwoven fabric 3 has an average spacing of 0.3-0.8 m / m when one stainless wire 2 and another wire 2 have a 1 m 2 equivalent of 28-36 g.

이와같은 조성비로 제조된 부직포(3)는 스텐레스와이어(2)가 전부 일방향성(一方向性)부직포 즉, 평행성 부직포(3)이므로, 그 와이어(2)가 평행을 이루는 경사방향으로는 매우 높은 강도를 나타내게 되지만 위사방향으로는 매우 약한 인열강력을 지니게 되는 것이 특징인데, 이때 X-밴드 빔의 방향성과 부직포의 위사방향으로의 낮은 인열강도를 없애주기 위해서는 제2도에 도시된 것처럼 부직포(3)를 직각형으로 직교합포 하여주게 되면 다음과 같은 2가지의 특성이 나타나게 된다. 즉, 그 한가지 특성으로 일방향성으로 존재하게 되는 스텐레스와이어(2)가 부직포(3)의 직교합포로 인해 서로 +자형으로 직교되게 변하게 되므로 X-밴드 빔의 방향성을 없애주는 효과를 가져오게 되며, 또한가지 특성은 그 일방향성의 평행성 부직포(3)를 서로 직교합포시켜줌으로서 경사방향의 인열강도가 전혀 없었던 것을 아주 높은 인열강도를 갖도록 해주게 되어 결국은 경사 및 위사방향 모두에 강한 인열강도를 갖게되는 것이다.The nonwoven fabrics 3 produced at such a composition ratio are all unidirectional nonwoven fabrics, that is, parallel nonwoven fabrics 3, because the stainless wires 2 are all in a slanted direction in which the wires 2 are parallel. It has high strength but has a very weak tear strength in the weft direction. In order to eliminate the directional direction of the X-band beam and the low tear strength of the nonwoven fabric in the weft direction, as shown in FIG. When (3) is orthogonal to the rectangular shape, the following two characteristics appear. That is, the stainless wire (2) that is present in one direction as one characteristic is changed to be orthogonal to each other + -shaped due to the orthogonal fabric of the nonwoven fabric (3), thereby bringing the effect of eliminating the direction of the X-band beam, In addition, this characteristic allows the unidirectional parallel nonwoven fabric 3 to be orthogonal to each other so that there is no tear strength in the inclined direction so as to have a very high tear strength. Will have a degree.

한편, 본 발명에서 일방향성의 평행성 부직포가 직각형태로 직교합포 될때에는 접착제를 이용해서 합포시켜 주게되는데, 이때 사용되는 접착제로는 연질 PVC 속에 존재하고 있는 가소제가 분리되거나 그 가소제에 좋지 않은 영향을 주게되는 이행(移行)이 발현되지 않는 접착제를 사용해야 한다. 그렇게 해야만 2차적으로 직교합포하여 완성된 부직포에 공지의 방법으로 PVC 코팅을 하였을 경우 2중으로 합포된 부직포가 원래의 강도를 그대로 지니게 된다. 따라서, 이와같은 본 발명에 따른 접착제로는 폴리우레탄 접착제를 사용하는 것이 가장 바람직하다.On the other hand, in the present invention, when the unidirectional parallel nonwoven fabric is orthogonal cross-woven fabric in a right-angled form, it is combined using an adhesive. At this time, the plasticizer existing in the soft PVC is separated or has an adverse effect on the plasticizer. An adhesive should be used that does not develop a performance-related effect. In this way, when the PVC is coated on the nonwoven fabric which is secondly cross-woven and finished by a known method, the double-woven nonwoven fabric retains its original strength. Therefore, it is most preferable to use a polyurethane adhesive as such an adhesive according to the present invention.

상술한 바와 같이 본 발명에 따라 제조된 레이다 산란 부직포는 X-밴드 빔 시험에서 -12 내지 -14데시빌의 산란 효과를 나타내게 된다.As described above, the radar scattering nonwoven fabric prepared according to the present invention exhibits a scattering effect of -12 to -14 decibels in the X-band beam test.

또한, 본 발명에 따른 부직포는 자연계에 장시간 노출시켜 놓아도 그 산란효과가 거의 반영구적으로 지속되고, 또 스텐레스와이어가 직교현상을 이루게 됨으로써 전자파의 산란효과가 정확할 뿐아니라 어느쪽에서 조사되어 들어오는 전자든지 방향성 없이 모두 균일하고도 정확하게 산란시켜주는 효과를 나타내며, 그 제조에 있어서도 단시간에 용이한 방법으로 대량생산이 가능해지게 된다. 그리고 태양자외선에 대한 견로도에 있어서도 나일론 직물에 비해 훨씬 우수한 효과가 있다.In addition, the nonwoven fabric according to the present invention is almost semi-permanent in the scattering effect even after prolonged exposure to the natural world, and by the orthogonal phenomena of stainless wire, the scattering effect of the electromagnetic wave is not only accurate but also the electrons irradiated from either direction without direction All have the effect of uniform and accurate scattering, and mass production can be achieved in an easy manner even in the production thereof. In addition, it has a much better effect than nylon fabrics in terms of resistance to ultraviolet rays.

Claims (2)

20~30S 비닐론 스판섬유 60~70%와 20~30S 나일론 스판섬유 20~30% 및 20~30S 폴리에스터 스판섬유 5~15%가 혼합조성시켜진 혼합섬유(1) 70~90중량%에 직경이 0.01~0.09m/m이고 길이가 10~100m/m인 스텐레스와이어(2) 30~10중량%가 일방향성으로 균일하게 혼합되어 형성된 평행성부직포를 직교합포시켜서 된 레이다산란부직포.60 ~ 70% of 20 ~ 30S vinylon span fiber and 20 ~ 30S nylon span fiber 20 ~ 30% and 20 ~ 30S polyester span fiber 5 ~ 15% mixed fiber (1) 70 ~ 90% by weight in diameter A radar scattering nonwoven fabric obtained by cross-wovening a parallel nonwoven fabric formed by uniformly mixing in a unidirectional manner in which 30 to 10% by weight of stainless wire (2) having 0.01 to 0.09 m / m and a length of 10 to 100 m / m. 제1항에 있어서, 상기 평행성부직포(3)는 1㎡ 당의 중량이 28-36g일 경우, 상기 스텐레스와이어(2) 사이의 평균간격이 0.3~0.8m/m이 되도록 한 것을 특징으로 하는 부직포.The nonwoven fabric according to claim 1, wherein the parallel nonwoven fabric 3 has an average spacing of 0.3 to 0.8 m / m when the weight per 1 m 2 is 28 to 36 g. .
KR1019870012581A 1987-11-09 1987-11-09 Nonwoven fabric for dispersion of radar KR900005001B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019870012581A KR900005001B1 (en) 1987-11-09 1987-11-09 Nonwoven fabric for dispersion of radar

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019870012581A KR900005001B1 (en) 1987-11-09 1987-11-09 Nonwoven fabric for dispersion of radar

Publications (2)

Publication Number Publication Date
KR890008378A KR890008378A (en) 1989-07-10
KR900005001B1 true KR900005001B1 (en) 1990-07-16

Family

ID=19265883

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019870012581A KR900005001B1 (en) 1987-11-09 1987-11-09 Nonwoven fabric for dispersion of radar

Country Status (1)

Country Link
KR (1) KR900005001B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103866488A (en) * 2014-04-01 2014-06-18 上海婉静纺织科技有限公司 Anti-bacterial back cushion and manufacturing method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103866488A (en) * 2014-04-01 2014-06-18 上海婉静纺织科技有限公司 Anti-bacterial back cushion and manufacturing method thereof

Also Published As

Publication number Publication date
KR890008378A (en) 1989-07-10

Similar Documents

Publication Publication Date Title
Foukal Morphological relationships in the chromospheric Hα fine structure
US4606968A (en) Electrostatic dissipating fabric
DE2925122A1 (en) ILLUMINATOR
US4230752A (en) Cigarette burn proof artificial grass
KR200491663Y1 (en) Insect screen for fine dust off
US3126924A (en) Kirkpatrick
KR900005001B1 (en) Nonwoven fabric for dispersion of radar
US20010009833A1 (en) Ultraviolet resistant upholstery
DE19530541C2 (en) Mesh fabric
EP1245708B8 (en) Multi-axial textile grid for technical or geotechnical use and method to manufacture same
KR960000782B1 (en) Composite fiber and apparatus for production thereof
JP2974856B2 (en) Base material for adhesive tape and method for producing the same
GB723370A (en) Improvements in strain gauges
ATE186340T1 (en) GRID FABRIC MADE OF POLYESTER FILAMENT YARN, METHOD FOR THE PRODUCTION THEREOF, DEVICE FOR CARRYING OUT THIS METHOD
KR0137296B1 (en) Composite yarn containing defferent sectional acetate effect yarn and fabric made therewith
US1661142A (en) Textile fabric
CN220787698U (en) Breathable wire winding tube
ES375238A1 (en) Procedure for the manufacture of a braid consisting of thread crossings. (Machine-translation by Google Translate, not legally binding)
Paralikar et al. The crystal structure of cotton cellulose investigated by an electron diffraction technique
JP4307179B2 (en) Method for producing core-sheath type polyester composite fiber and woven / knitted fabric
JP3173920B2 (en) Manufacturing method of mesh sheet
JPS5761712A (en) Flat hollow synthetic fiber
ES2070783B1 (en) BIODEGRADABLE FABRIC FOR THE PREVENTION OF EROSION.
Cuckow Progressive lattice distortion in stressed crystal lamellae
JPS63307938A (en) Manufacture of clothing material for dustproof clothes

Legal Events

Date Code Title Description
A201 Request for examination
G160 Decision to publish patent application
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 19950710

Year of fee payment: 6

LAPS Lapse due to unpaid annual fee