JPH0720677B2 - Plastic net and its manufacturing method - Google Patents
Plastic net and its manufacturing methodInfo
- Publication number
- JPH0720677B2 JPH0720677B2 JP30820592A JP30820592A JPH0720677B2 JP H0720677 B2 JPH0720677 B2 JP H0720677B2 JP 30820592 A JP30820592 A JP 30820592A JP 30820592 A JP30820592 A JP 30820592A JP H0720677 B2 JPH0720677 B2 JP H0720677B2
- Authority
- JP
- Japan
- Prior art keywords
- net
- mesh
- groove
- yarn
- thread
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Lifetime
Links
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ガソリン、オイル用の
フィルタ−、粉状体のフルイ、雅魚養殖用のネット等の
網体に関し、更に詳細には、射出成形にて一体的に製造
可能なプラスチック製網体に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a net body such as a filter for gasoline and oil, a powdery sieve, and a net for fish farming. More specifically, it is manufactured integrally by injection molding. Possible plastic nets.
【０００２】[0002]
【従来の技術】上記網体の製造は、従来、プラスチッ
ク、天然繊維、又はステンレス等を一本々の糸に紡ぎ、
これを織編機に掛けて、格子状等に桝目のメッシュを形
成して網体とし、これを所定寸法に裁断して、枠体と組
合せるようインサ−ト成形にて一体化させて製品として
いる。しかし、これには以下のような欠点がある。 （ａ）網体の裁断や、その裁断した網体を枠体に沿わせ
てインサ−ト成形する作業は、工程数が多いと共に熟練
を要し、工賃が高くなる傾向にある。 （ｂ）枠体に支持されて、網体が完全に張設されるのが
理想的であるが、インサ−ト時に合せ方が狂うと、弛ん
だり皺の寄った不良な製品となり易い。 （ｃ）糸を織編するので、ミクロ的に見ると表面に凹凸
が存在し、それがゴミ等の付着を起こし、目詰りを惹起
する原因となる。2. Description of the Related Art Conventionally, a net body is manufactured by spinning plastic, natural fiber, stainless steel or the like into individual threads,
This is woven on a knitting machine to form a mesh in a grid pattern to form a net, which is cut to a predetermined size and integrated by insert molding so that it can be combined with the frame. I am trying. However, this has the following drawbacks. (A) The cutting of the net body and the work of insert-molding the cut net body along the frame body require a lot of steps and require skill, and the labor cost tends to increase. (B) Ideally, the net body is fully stretched by being supported by the frame body, but if the fitting method is wrong at the time of insertion, the product tends to become loose or wrinkled, resulting in a defective product. (C) Since the yarn is woven or knitted, when viewed microscopically, there are irregularities on the surface, which causes the attachment of dust and the like, which causes clogging.
【０００３】[0003]
【発明が解決しようとする課題】そこで本発明は、従来
困難視されていた、射出成形による網体の一体成形法を
開発しようと試みたものであり、従来射出成形法の欠点
である、（ａ）ピンゲ−トから微細な網目の末端まで樹
脂が到達せず、又、樹脂の流れが一方向に偏向し易く、
残された方向には樹脂が注入されない等、網目が不完全
にしか形成できないこと、（ｂ）注入圧力を相当な高圧
としなければならず、その結果装置が大型化し、高価と
なってしまうこと、等の問題を解消しようとするもので
ある。Therefore, the present invention is an attempt to develop a method for integrally molding a net body by injection molding, which has been regarded as difficult in the past, and is a drawback of the conventional injection molding method. a) The resin does not reach from the pin gate to the end of the fine mesh, and the flow of the resin is easily deflected in one direction,
The resin can not be injected in the remaining direction, so that the mesh can be formed only incompletely, and (b) the injection pressure must be set to a considerably high pressure, resulting in an increase in size and cost of the device. It tries to solve the problems such as.
【０００４】[0004]
【課題を解決するための手段】本発明プラスチック製網
体は、枠内に網目を形成するプラスチック製網体におい
て、下記の条件を満たす誘導帯を配し、 誘導帯：（ａ）網糸と連通し、（ｂ）ゲ−トから圧入さ
れた溶融樹脂を貯留する少なくとも網糸より太径の帯
体を形成し、（ｃ）その帯体は枠に連通しない蓄圧可能
な閉鎖状とし、（ｄ）その蓄積圧で連通した網糸に溶融
樹脂を浸透させる浸透領域を形成する、当該誘導帯との
浸透領域を端部で重ね合わせて網体を連続させて一体的
に成型したことを特徴として構成される。The plastic net body of the present invention is a plastic net body which forms a mesh in a frame, and is provided with an induction zone satisfying the following conditions. (B) A band having a diameter larger than that of at least the mesh yarn, which stores the molten resin press-fitted from the gate (b).
Forming a body, (c) the band is in a closed state capable of accumulating and does not communicate with the frame, and (d) forming a permeation region for allowing the molten resin to permeate the mesh thread that is in communication with the accumulating pressure; It is characterized in that the permeation regions are overlapped at the ends and the net body is continuously formed and integrally molded.
【０００５】[0005]
【作用】ゲ−トから溶融樹脂が注入されると、先ず、誘
導帯を形成する帯体に導かれ、そこが枠体に連通しない
閉鎖状に形成されているので、一旦そこに貯留する。そ
して、その帯体内に樹脂が一杯に満たされると、更なる
ゲ−トからの樹脂の注入で、帯体内に圧力が蓄積され、
それが一定値を越えると、連通した網糸部に送出され、
樹脂の浸透領域を形成する。そして、複数の誘導帯から
の浸透領域が端部で重ね合わされて接続し、連続的な網
体が一体的に形成される。この誘導帯の作用により、通
常の成形に使用する程度の比較的低圧でも網体を連続的
に形成することができる。又、成形された網体は、交差
部で溶融一体化されているので、強い物理的強度を発揮
する。When the molten resin is injected from the gate, it is first guided to the band member forming the guide band, and since it is formed in a closed shape that does not communicate with the frame member, it is temporarily stored therein. Then, when the band is filled with the resin, the pressure is accumulated in the band by further injection of the resin from the gate.
When it exceeds a certain value, it is sent out to the connected mesh part,
It forms a resin penetration area. Then, the permeation regions from the plurality of induction zones are overlapped and connected at the ends, and a continuous net body is integrally formed. Due to the action of this induction band, the net body can be continuously formed even at a relatively low pressure such as that used in ordinary molding. Further, since the formed net body is melted and integrated at the intersection, it exhibits a strong physical strength.
【０００６】[0006]
【実施例】以下、図面を基に実施例を説明すると、図１
及び図２において、１がガソリン、オイル用のフィルタ
−、粉状体のフルイ、雅魚養殖用のネット等を対象とす
る網体で、その外側に枠体２を縁取りし、内側に網糸部
３を有する。そして、当該網糸部３の一部に下記の条件
を満たす誘導帯４を配する。当該誘導帯４とは、細径の
網糸部３には通常の手段では溶融樹脂が浸透せず、網目
が不完全になるのを解消するもので、（ａ）網糸と連通
し、（ｂ）ゲ−トから圧入された溶融樹脂を貯留する少
なくとも網糸より太径の帯体を形成し、（ｃ）その帯体
は枠に連通しない蓄圧可能な閉鎖状とし、（ｄ）その蓄
積圧で連通した網糸に溶融樹脂を浸透させる浸透領域を
形成するものである。即ち、模式的に示した図１４に示
すように、誘導帯４は、ゲ−トからの溶融樹脂の流入を
受けた後、これを網糸部３に圧入させる為、先ず、網糸
部３と連通させる一方で、溶融樹脂を蓄えるべき帯体を
形成する。この帯体は、網糸部３の糸の口径や後述の浸
透領域との関係から相対的に決定されるが、例えば網糸
部３が０．３×０．２×０．５ｍｍの場合には、直径約
２ｍｍφ程度とする。そして、この帯体は、一定の圧力
を蓄積する為のものであるから、枠体２と連通させず
に、網糸部３と連通させる以外は可及的に閉鎖状とする
ものとする。その結果、誘導帯４は枠体２とは必ず一定
間隔を置いて形成するものする。更に、当該空間に溶融
樹脂が満たされた後、一定の蓄積圧をもって網糸部３に
圧送され、その誘導帯４の周囲に一定の浸透領域を形成
するものとし、例えば、２ｍｍφ口径の誘導帯で網糸部
が０．３×０．２×０．５ｍｍの場合は、周囲に１５〜
２０ｍｍ幅の浸透領域が形成される。この領域の面積
は、樹脂の種類、成形械の特性等によって影響を受け
る。そして、一の誘導帯の浸透領域と他の誘導帯の浸透
領域との端部を重ね合わせることで網体を連続させ、枠
体２内に一体的に形成された網糸部３を創製する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment will be described below with reference to the drawings.
In FIG. 2, reference numeral 1 denotes a net for a gasoline filter, an oil filter, a powdery sieve, a net for fish farming, and the like. It has a part 3. Then, a guide band 4 that satisfies the following conditions is arranged on a part of the net yarn portion 3. The induction zone 4 is for eliminating the incomplete mesh due to the molten resin not permeating into the small-diameter mesh part 3 by a normal means, and (a) communicating with the mesh string, b) forming a band having a diameter larger than that of at least the mesh yarn for storing the molten resin pressed in from the gate; (c) the band has a closed shape capable of accumulating and does not communicate with the frame; It forms a permeation region that allows the molten resin to permeate the mesh yarns that are communicated by pressure. That is, as shown in FIG. 14 which is schematically shown, the induction zone 4 receives the molten resin from the gate and presses the molten resin into the mesh section 3. It forms a strip to store molten resin while communicating with. This band is relatively determined from the relation between the diameter of the yarn of the mesh yarn portion 3 and the permeation area described later. For example, when the mesh yarn portion 3 is 0.3 × 0.2 × 0.5 mm. Is about 2 mmφ in diameter. Since this band body is for accumulating a constant pressure, it should be closed as much as possible except that it is not communicated with the frame body 2 but with the mesh yarn portion 3. As a result, the guide band 4 is always formed at a constant distance from the frame body 2. Furthermore, after the space is filled with the molten resin, it is pumped to the mesh portion 3 with a constant accumulated pressure to form a constant permeation region around the guide zone 4, and for example, a guide zone having a diameter of 2 mmφ. If the mesh yarn part is 0.3 × 0.2 × 0.5 mm, it is 15 ~
A 20 mm wide penetration area is formed. The area of this region is affected by the type of resin, the characteristics of the molding machine, and the like. Then, the mesh body is made continuous by overlapping the end portions of the permeation region of one induction zone and the permeation region of the other induction zone, and the mesh thread portion 3 integrally formed in the frame body 2 is created. .
【０００７】さて、当該誘導帯４と網糸部３との関係に
あって、網糸部３の網糸は通常縦糸３ａと横糸３ｂとに
分れるが、その断面形状は、丸型と角型が存する。先ず
丸型から説明すると、図２に示す如く、網糸３は、縦糸
３ａと横糸３ｂから成り、後述の成形法により、それが
格子状に交わりつつ、交差部で融合一体化し、単一の平
面を形成し、従来の如く、糸を上下に交絡させて編むの
でなく、溶融樹脂を交差部で一体化させて、溶融による
融合から段差のない単一平面を具現する。その断面丸型
の形状は、円形又は楕円形とすると、樹脂の流動性が保
て、網目の空隙率を増すことができ、又、脱型の際、抜
き勾配に抵抗が少なく成形が容易でより好ましい。一
方、角型は、図３に示す如く、その網糸３の縦糸３ａを
上側又は下側とし、横糸３ｂをその逆として、夫々を同
一面上に並設し、且つ、互いの交差部を結合させて一体
的に編むものとする。即ち、従来の如く、縦糸と横糸を
上下方向に交絡させて編むものでなく（図１５参照）、
又、単一平面上に格子状に交差させるものでもなく、縦
糸３ａと横糸３ｂとを互いに上下に分けて、上下各々が
同一平面上でストレ−トな路を形成し、その交差部を一
体融合させた網糸３とするものである。これは後述の樹
脂の網糸への注入を促すと共に、ゴミ等の付着を防ぐ為
のものである。次に、網糸３の断面形状は、図４に示す
如く、上辺の幅をＷ1 ＝１とした場合、その高さをＨ＝
３／４とし、底辺の幅をＷ2 ＝１／２〜３／４とし、上
辺と側壁とのなす角をθ＝９゜〜１８゜に形成して、樹
脂の流動を円滑化させると共に、網糸としての物理的強
度を保つ形態とする。Now, in the relationship between the guide band 4 and the net yarn portion 3, the net yarn of the net yarn portion 3 is usually divided into the warp yarn 3a and the weft yarn 3b, but the cross-sectional shapes thereof are round and square. Type exists. First, the circular shape will be described. As shown in FIG. 2, the net yarn 3 is composed of warp yarns 3a and weft yarns 3b. Instead of forming a flat surface and knitting threads by entwining them up and down as in the prior art, the molten resin is integrated at the intersections to realize a single flat surface without any step from fusion due to melting. If the round cross-sectional shape is circular or elliptical, the fluidity of the resin can be maintained and the porosity of the mesh can be increased, and there is little resistance to draft when demolding and easy molding. More preferable. On the other hand, in the square type, as shown in FIG. 3, the warp yarns 3a of the mesh yarn 3 are on the upper side or the lower side, and the weft yarns 3b are on the opposite side. It shall be combined and knit together. That is, the warp and the weft are not entangled in the vertical direction as in the conventional case and knitted (see FIG. 15).
Also, the warp yarns 3a and the weft yarns 3b are divided into upper and lower parts so as not to intersect in a lattice on a single plane, and the upper and lower parts form a straight path on the same plane, and the intersecting parts are integrated. The net yarn 3 is made to be fused. This is to promote the injection of resin, which will be described later, into the mesh yarn, and to prevent adhesion of dust and the like. Next, as shown in FIG. 4, when the width of the upper side is W 1 = 1 and the height of the mesh yarn 3 is H =
3/4, the width of the bottom side is W 2 = 1/2 to 3/4, and the angle formed by the top side and the side wall is θ = 9 ° to 18 ° to smooth the resin flow and The shape is such that the physical strength of the net yarn is maintained.
【０００８】次に、当該誘導帯４の正面からの形状は、
放射状が望ましいが、その他、渦巻き状、輪回状、並列
状等が可能となる。先ず、放射状は、図１に示した如
く、網体１の全体に対し、中心から周囲に向って拡散す
るように数本の誘導帯４を放射状に伸ばし、その態様
は、全体の形状と比較して対応させるもので、例えば、
正方形や長方形の場合は、その対角線に向って中心から
４本の誘導帯４を伸ばし、円形の場合は、４〜８本程度
を比較的自由に設定できる。中心からの誘導帯４では不
足する場合には、その間に補助的な誘導帯４ａを設けて
も良い。この放射状は、中心部から周囲に向って、効率
良く浸透領域を拡散できる点で最も望ましい。しかし、
この放射状に限定されず、図５に示す如く、一点から拡
散して斬開曲線に展開する渦巻き状にし、ゲ−トからの
溶融樹脂を渦巻き状に展開して、そこから浸透領域を周
囲に拡散できるようにすることも可能である。又、一点
からの拡散はできないが、数点からの拡散手段として、
図６に示す如く、一回毎に輪を形成し、その輪を数回に
重ねて輪回状とすることもできる。この渦巻き状及び輪
回状の場合、枠体が円形の場合はその円形に合わせた曲
線を描き、枠体が角型の場合は、角型に誘導帯４を描く
ことができる。図７は、誘導帯４を並列状に並設させた
場合を描いたもので、一定間隔を置いて並行する誘導帯
４からその周囲に浸透領域を形成し、その端部を重ね合
せて網糸部３を連続させることが可能である。Next, the shape of the induction band 4 from the front is
A radial shape is desirable, but in addition, a spiral shape, a circular shape, a parallel shape, and the like are possible. First, as shown in FIG. 1, the radial shape extends several guide bands 4 to the whole mesh body 1 so as to diffuse from the center toward the periphery. Then, for example,
In the case of a square or a rectangle, four induction bands 4 can be extended from the center toward the diagonal line, and in the case of a circle, about 4 to 8 can be set relatively freely. When the guide band 4 from the center is insufficient, an auxiliary guide band 4a may be provided between them. This radial shape is most desirable in that the permeation region can be efficiently diffused from the central portion toward the periphery. But,
The shape is not limited to this radial shape, and as shown in FIG. 5, it is made into a spiral shape that diffuses from one point and expands into a cut-out curve, and the molten resin from the gate is expanded into a spiral shape, from which the permeation region is surrounded. It is also possible to allow diffusion. Also, diffusion from one point is not possible, but as a diffusion means from several points,
As shown in FIG. 6, it is also possible to form a ring each time and stack the ring several times to form a ring shape. In the case of the spiral shape and the circular shape, when the frame body is circular, a curve matching the circle can be drawn, and when the frame body is square, the induction band 4 can be drawn in a square shape. FIG. 7 illustrates a case where the induction zones 4 are arranged side by side in parallel. A permeation region is formed around the induction zones 4 that are parallel with each other at regular intervals, and their ends are overlapped to form a mesh. It is possible to make the thread part 3 continuous.
【０００９】又、誘導帯４の径は通常は一定の幅で連続
させるが、網糸部３の面積が比較的大で、注入樹脂の進
入が困難な場合には、図８に示す如く、放射状の中心部
附近では比較的細径で、これより離れた遠隔部で太径と
するのが望ましい。これは、中心部から若干離れた遠隔
部に太径の誘導帯４を形成し、そこに一旦樹脂を滞留さ
せ、より大きな蓄積圧力で遠隔部の網糸部３まで樹脂を
進入させる為である。更に、比較的樹脂の進入の悪い箇
所には、同図８に示す如く、誘導帯４の途中を三叉路，
四叉路４ｄ等に分岐させて形成し、末端までの進入を図
る。Further, the diameter of the guide band 4 is usually continuous with a constant width, but when the area of the net thread portion 3 is relatively large and it is difficult for the injected resin to enter, as shown in FIG. It is desirable that the diameter is relatively small near the radial center part and large at the remote part far from this. This is because a large-diameter induction zone 4 is formed at a remote portion slightly away from the central portion, the resin is once retained therein, and the resin is allowed to enter the mesh portion 3 at the remote portion with a larger accumulated pressure. . Further, at a portion where the resin is relatively poorly penetrated, as shown in FIG.
It is formed by branching into a four-way path 4d, etc., and is made to enter the end.
【００１０】更に、通常の網体１は平面的であるが、ガ
ソリン用フィルタ−、石油スト−ブ用フィルタ−等には
立体的なものがあり、図９に示す如く、断面が台形を成
す先端部と側面に網体を配する立体的なものも存する。
この場合にも、本発明は応用でき、後述する製造方法に
より、側面にゲ−トを配し、そこに連通する誘導帯４を
形成し、その条件は上記平面的網体と同様にすることが
できる。Further, although the ordinary net body 1 is flat, there are three-dimensional gasoline filters, oil stove filters, etc., and the trapezoidal section is shown in FIG. There are also three-dimensional objects that have nets on the tip and side surfaces.
In this case as well, the present invention can be applied, and by the manufacturing method described later, the gate is arranged on the side surface and the induction zone 4 communicating therewith is formed under the same conditions as the above-mentioned planar net body. You can
【００１１】次に、本発明網体を製造する為の方法を説
明する。先ず、縦糸３ａと横糸３ｂを上下対称に形成す
る場合を説明すると、図１０に示す如く、先ず、金型と
して射出成形用の上型５と下型６とに分れた金型を用
い、その上型５に、縦糸３ａ及び横糸３ｂの上半分を半
円に刻んだ上縦溝８ａ及び上横溝８ｂを縦横に交差させ
て格子状に刻設する。次いで、下型６に、前記上型と反
対に縦糸３ａ及び横糸３ｂの下半分を半円に刻んだ下縦
溝９ａ及び下横溝９ｂを縦横に交差させて格子状に形成
し、上型と下型が組合された場合、円形のキャビティ溝
が形成されるようにする。そして、この上型５及び下型
６の略中央には、誘導帯４を形成する誘導溝１０を刻
み、周囲には枠体２を形成する枠溝７を刻設する。Next, a method for producing the net body of the present invention will be described. First, the case where the warp yarns 3a and the weft yarns 3b are formed vertically symmetrically will be described. As shown in FIG. 10, first, as a mold, a mold divided into an upper mold 5 and a lower mold 6 for injection molding is used. On the upper die 5, upper vertical grooves 8a and upper horizontal grooves 8b, which are formed by cutting the upper halves of the warp threads 3a and the weft threads 3b into a semi-circle, are engraved in a lattice pattern crossing each other in the vertical and horizontal directions. Next, on the lower die 6, the lower vertical grooves 9a and the lower horizontal grooves 9b in which the lower halves of the warp threads 3a and the weft threads 3b are engraved in a semicircle are formed in a lattice shape in the form of a lattice, opposite to the upper die. When the lower molds are combined, a circular cavity groove is formed. Then, a guide groove 10 forming the guide band 4 is carved in the substantial center of the upper mold 5 and the lower mold 6, and a frame groove 7 forming the frame body 2 is carved around the guide groove 10.
【００１２】かかる金型に、注入用のゲ−ト１１を少な
くとも中央部から一箇所、若しくは、誘導溝１０上に数
箇所設けて、そこから溶融状態の樹脂を注入する。する
と、ゲ−トから圧入された樹脂は、上型の誘導溝１０ａ
と下型の誘導溝１０ｂとで形成される誘導溝１０の比較
的広い空間に出て、その溝路に沿って進む（図１４Ａ参
照）。そして、それが誘導溝１０の空間を満たした時、
空間が閉鎖状に形成されているので、流出路を失ってそ
こに貯留し、更なる圧入で空間内に一定圧力が蓄積され
る（図１４Ｂ参照）。そして、その蓄積圧力が一定値を
越えた時、連通した網糸部３に溶融樹脂が送り出され、
細径の網糸部３に樹脂が進行し、誘導溝１０の周囲に浸
透領域が形成される（図１４Ｃ参照）。この浸透領域
は、誘導溝１０を形成せず、ゲ−トから流入した樹脂を
そのまま網糸部に浸透させるのと比較すると、その浸透
領域の面積は、数倍に達する。このとき、図１２に示す
如く、樹脂の進入路は、交差部で直進と左折及び右折の
三方向の確率があるが、中心ゲ−トから誘導帯を経て放
射状の拡散方向に進むので、直進及び拡散方向に合致し
た左右いずれか一方に曲り、樹脂が互いに逆向きに流れ
て気泡を封じてしまうことがない。又、浸透領域の重な
り部で、気泡の生じる虞がある場合には、その部位に入
れ子を二つ割りにして設け、その間隙から吸引すれば良
い。又、当該網糸部３の断面形状を、断面円形又は楕円
形等の丸形とすると、樹脂の流動性が良好で細径の溝で
も遠隔部まで樹脂を進入させることができ、且つ、脱型
の際、抜き勾配に抵抗が少なく成形が容易である。又、
このとき、上型又は下型を完全な半円とするのでなく、
径の１／１００程度の割合で、例えば下型にストレ−ト
部を設けると、脱型の際、そのストレ−ト部を設けた下
型の方に硬化樹脂を寄せることができる。In such a mold, an injection gate 11 is provided at least at one location from the center or at several locations on the guide groove 10, and molten resin is injected from there. Then, the resin press-fitted from the gate is guided into the upper guide groove 10a.
The guide groove 10 is formed by the lower guide groove 10b and the guide groove 10b, and moves along the groove path (see FIG. 14A). And when it fills the space of the guide groove 10,
Since the space is formed in a closed shape, the outflow passage is lost and stored therein, and a constant pressure is accumulated in the space by further press fitting (see FIG. 14B). Then, when the accumulated pressure exceeds a certain value, the molten resin is sent out to the connected mesh portion 3,
The resin advances to the small-diameter net thread portion 3 to form a permeation region around the guide groove 10 (see FIG. 14C). In this permeation region, the area of the permeation region reaches several times as compared with the case where the guide groove 10 is not formed and the resin flowing in from the gate is permeated as it is into the net yarn portion. At this time, as shown in FIG. 12, the resin approach road has three probabilities of going straight, turning left and turning right at the intersection, but going straight from the central gate through the induction zone in the radial diffusion direction. Also, the resin does not bend to the left or right, which matches the diffusion direction, and the resin does not flow in the opposite directions to seal the bubbles. Further, if there is a possibility that air bubbles will be generated at the overlapping portion of the permeation regions, a nest may be provided at that portion and the suction may be performed through the gap. Further, if the cross-sectional shape of the net thread portion 3 is a circular shape such as a circular shape or an elliptical shape in cross section, the fluidity of the resin is good and the resin can enter into a remote portion even in a small-diameter groove, In the case of a mold, there is little resistance to the draft and molding is easy. or,
At this time, instead of making the upper mold or the lower mold a perfect semicircle,
When the straight mold is provided with a straight part at a ratio of about 1/100 of the diameter, the cured resin can be brought closer to the lower mold provided with the straight mold when the mold is removed.
【００１３】この際、誘導溝１０の形状を正面的に放射
状とすると、その中心部にゲ−トを投じて、そこから溶
融樹脂を注入すると、放射状に拡散した誘導溝１０に樹
脂が貯留し、次いで、一定の蓄積圧で上縦溝８ａ、上横
溝８ｂ及び下縦溝９ａ及び下横溝９ｂに樹脂が送出さ
れ、そこから周囲に向って浸透領域が拡散されていく。
従って、誘導溝１０から浸透が網体全体に効率良く行な
われる。又、渦巻き状とした場合（図５参照）は、渦の
中心部から周囲に徐々に浸透領域が広がっていき、上記
放射状より若干劣るが、やはり効率良く浸透領域を形成
することができる。更に、輪回状（図６参照）又は並行
状（図７参照）とするとゲ−トの数を増やさねばならな
い面倒さは加わるが、輪回状又は並行状の誘導溝１０の
周囲に浸透領域を形成して、その端部の重ね合せ部で連
続させることができる。At this time, if the guide groove 10 has a radial shape in front, a gate is cast in the center of the guide groove, and when molten resin is injected from there, the resin is stored in the guide groove 10 which is radially diffused. Then, the resin is delivered to the upper vertical groove 8a, the upper horizontal groove 8b, the lower vertical groove 9a, and the lower horizontal groove 9b at a constant accumulated pressure, and from there, the permeation region diffuses toward the surroundings.
Therefore, the permeation is efficiently performed from the guide groove 10 to the entire net body. Further, in the case of the spiral shape (see FIG. 5), the permeation region gradually expands from the central portion of the vortex to the periphery, and although it is slightly inferior to the above radial shape, the permeation region can still be formed efficiently. Further, if it is formed in a circular shape (see FIG. 6) or in a parallel shape (see FIG. 7), the inconvenience that the number of gates must be increased is added, but a permeation region is formed around the circular or parallel guide groove 10. Then, they can be continued at the overlapping portion at the end thereof.
【００１４】加えて、誘導溝１０の幅を、一定幅でなく
先端部を太くするように形成した場合には（図８参
照）、誘導溝１０内のゲ−トからの流入圧が先端部程低
下するから、貯留空間を大きくして、そこに蓄積する圧
力を大きくできるので、先端部の圧力低下を補い、全体
的に均一の浸透領域を形成できる。従って、これは、網
体の面積が比較的大きく、浸透の困難な部分を有する場
合に有効な手段である。In addition, when the width of the guide groove 10 is formed to be thicker than the fixed width (see FIG. 8), the inflow pressure from the gate in the guide groove 10 is changed by the tip portion. Since the storage space can be made larger and the pressure accumulated therein can be made larger, the pressure drop at the tip can be compensated and a uniform permeation region can be formed. Therefore, this is an effective means when the mesh has a relatively large area and has a portion which is difficult to penetrate.
【００１５】更に、網糸部３の周囲に形成される枠体２
の枠溝７の空隙から吸引すると、樹脂が拡散方向に引か
れるので、樹脂の流動は一層細部まで進入するようにな
る。斯して、上縦溝８ａ及び下縦溝９ａと上横溝８ｂの
下横溝９ｂのキャビテイ内に注入した樹脂は、互いに溶
融して一体化し、縦糸３ａと横糸３ｂとが単一平面で一
体的に結合される。従って、成形後の網体１は、網目が
相互に固定されて圧力等に強い物理的強度を発揮すると
共に、フィルタ−としての網目が均一化し、一定粒度の
異物を篩分けする際等には優れた選別効果を促す。又、
フィルタ−として単一平面なので厚みが薄くなり、液状
物のフィルタ−として使用する場合、乱流を起こす割合
が減少する。Further, the frame body 2 formed around the net thread portion 3
When sucked from the void of the frame groove 7, the resin is drawn in the diffusion direction, so that the flow of the resin further penetrates into the details. Thus, the resin injected into the cavities of the upper vertical groove 8a and the lower vertical groove 9a and the lower horizontal groove 9b of the upper horizontal groove 8b is melted and integrated with each other, and the warp threads 3a and the weft threads 3b are integrated in a single plane. Be combined with. Therefore, the mesh body 1 after molding exhibits physical strength that is strong against pressure and the like because the meshes are fixed to each other, and the mesh as the filter is uniformized, and when sieving foreign matter of a certain particle size, etc. Promotes excellent sorting effect. or,
Since it is a single plane as a filter, the thickness is thin, and when it is used as a liquid filter, the rate of turbulence is reduced.
【００１６】尚、誘導溝８が途切れた枠体２との領域
は、誘導溝８から上縦溝８ａ及び下縦溝９ａと上横溝８
ｂの下横溝９ｂに流入して樹脂が回り込み、比較的ゆっ
くりではあるが、網糸部３を完成させる。これを冷却
後、脱型すると、上記で説明した網体１が得られる。In the region of the frame body 2 where the guide groove 8 is interrupted, the upper vertical groove 8a and the lower vertical groove 9a and the upper horizontal groove 8 are formed from the guide groove 8.
The resin flows into the lower lateral groove 9b of the b and wraps around the resin, and the net yarn portion 3 is completed although it is relatively slow. When this is cooled and then removed from the mold, the mesh body 1 described above is obtained.
【００１７】次いで、網糸の縦糸と横糸とが上下で非対
称の場合を説明すると、図１３に示す如く、金型として
射出成形用の上型１２と下型１３とに分れた金型を用い
るのは同様であるが、その上型１２に、縦糸３ａ（又は
横糸３ｂのいずれか一方）を互に並行に数条に形成する
縦溝１５ａ刻設し、次いで、下型１３に、上記上型とは
逆に、横糸を形成する横溝１５ｂを刻設する。そして、
この上型１２と下型１３とを組合せると、上型の縦溝１
５ａと下型の横溝１５ｂとが直交状に配設され、その交
差部１５ｃは、互いの溝孔が臨んで、連通状態となるよ
うにする。すると、網溝が縦溝１５ａと横溝１５ｂとが
上下に分割され、夫々が同一平面上に一方向に並行して
いるので、細径であってもストレ−トな路を抵抗を受け
ることなく進み、即ち、低い圧入力でも末端にまで樹脂
が注入され、比較的低い圧力下での網体の成形が可能と
なる。同時に、縦溝１５ａと横溝１５ｂに注入された樹
脂は、その交差部１５ｃで出会い、互いに溶融して一体
化し、縦糸３ａと横糸３ｂとが一体的に結合されるの
で、成形後の網体１は、網目が相互に固定されて圧力等
に強い物理的強度を発揮する。Next, the case where the warp yarn and the weft yarn of the mesh yarn are asymmetrical in the vertical direction will be described. As shown in FIG. 13, a mold divided into an upper mold 12 and a lower mold 13 for injection molding is used as a mold. The same use is made, but the upper mold 12 is engraved with vertical grooves 15a for forming the warp yarns 3a (or one of the weft yarns 3b) in parallel with each other in several rows, and then, in the lower mold die 13, Contrary to the upper mold, a lateral groove 15b forming a weft thread is engraved. And
By combining the upper mold 12 and the lower mold 13, the vertical groove 1 of the upper mold is obtained.
5a and the lower die lateral groove 15b are arranged orthogonally to each other, and the intersecting portion 15c is such that the groove holes face each other and are in a communicating state. Then, the net groove is divided into the vertical groove 15a and the horizontal groove 15b in the upper and lower parts, and since the net grooves are parallel to each other in one direction on the same plane, even if the diameter is small, the straight path does not receive resistance. In other words, even if the pressure is low, the resin is injected to the end even with a low pressure input, and the net body can be molded under a relatively low pressure. At the same time, the resins injected into the vertical grooves 15a and the horizontal grooves 15b meet at their intersections 15c and are melted and integrated with each other, so that the warp yarns 3a and the weft yarns 3b are integrally combined, so that the net body 1 after molding is formed. , The meshes are fixed to each other and exert strong physical strength against pressure and the like.
【００１８】更に、網体を平面的だけでなく、立体的に
形成する場合を説明すると、金型を上型と下型との間に
入れ子を介在させて３つに分割し、その入れ子の側面に
ゲ−ト部を設け、そこから溶融樹脂を注入する。このと
き、側面ゲ−トへの樹脂の注入は、上型からランナ−を
走らせ、その迂回路から補給する（図示省略）。Further, the case where the net body is formed not only in a plane but also in a three-dimensional manner will be explained. The mold is divided into three parts by inserting a nest between the upper mold and the lower mold, and the mold is divided into three parts. A gate portion is provided on the side surface, and molten resin is injected from there. At this time, the resin is injected into the side surface gate by running the runner from the upper die and replenishing it from the bypass (not shown).
【００１９】[0019]
【発明の効果】本発明は以上のようで、上記蓄圧及び誘
導作用を発揮する誘導帯を形成したので、通常の成形に
使用する圧力で溶融樹脂を網糸の末端まで注入させるこ
とができ、従来困難視されていた射出成形による網体の
一体成形が、低圧で且つ小規模で可能となるという優れ
た効果を奏する。その成形された網体も、縦糸と横糸と
が一体融合化されて単一平面を形成するので物理強度を
有すると共に、網目が均一化されフィルタ−としての選
別篩効果が向上する等性能的にも優れた機能を発揮す
る。As described above, according to the present invention, since the induction zone exhibiting the above-mentioned pressure accumulation and induction action is formed, the molten resin can be injected up to the end of the net yarn by the pressure used for ordinary molding. It has an excellent effect that it is possible to integrally form a net body by injection molding, which has been conventionally considered difficult, at a low pressure and on a small scale. The formed mesh body also has physical strength because the warp yarns and the weft yarns are integrally fused to form a single plane, and at the same time the meshes are made uniform and the screening effect as a filter is improved. Also exhibits excellent functions.
【図１】本発明網体の正面図である。FIG. 1 is a front view of a net body of the present invention.
【図２】本発明網体が断面円形の場合の要部拡大斜視図
である。FIG. 2 is an enlarged perspective view of a main part when the mesh body of the present invention has a circular cross section.
【図３】本発明網体が上下非対称で断面台形の場合の要
部拡大斜視図である。FIG. 3 is an enlarged perspective view of an essential part of the net body of the present invention which is vertically asymmetric and has a trapezoidal cross section.
【図４】本発明網体を断面台形とした場合の拡大縦断面
図である。FIG. 4 is an enlarged vertical cross-sectional view when the net body of the present invention has a trapezoidal cross section.
【図５】本発明網体の誘導帯を渦巻き状に形成した場合
の正面図である。FIG. 5 is a front view of a case where the induction band of the mesh body of the present invention is formed in a spiral shape.
【図６】本発明網体の誘導帯を輪回状に形成した場合の
正面図である。FIG. 6 is a front view of a case where the guide band of the mesh body of the present invention is formed in a circular shape.
【図７】本発明網体の誘導帯を並行状に形成した場合の
正面図である。FIG. 7 is a front view of a case where the induction bands of the mesh body of the present invention are formed in parallel.
【図８】本発明網体の誘導帯の遠隔部を太径に形成した
場合の正面図である。FIG. 8 is a front view of a case where the remote part of the guide band of the mesh body of the present invention is formed to have a large diameter.
【図９】本発明網体が立体的な場合の斜視図である。FIG. 9 is a perspective view when the net body of the present invention is three-dimensional.
【図１０】本発明の製造に用いる上型と下型を組合せた
状態の右縦断側面図である。FIG. 10 is a right vertical cross-sectional side view showing a state in which an upper die and a lower die used in the production of the present invention are combined.
【図１１】本発明の製造に用いる上型と下型を組合せた
状態の左縦断側面図である。FIG. 11 is a left vertical sectional side view showing a state in which an upper die and a lower die used in the production of the present invention are combined.
【図１２】網糸部を流動する状態を模式的に示す部分的
平面図である。FIG. 12 is a partial plan view schematically showing a state in which the mesh yarn portion flows.
【図１３】本発明網体が上下非対称の場合の製造に用い
る上型と下型を組合せた状態の右縦断側面図である。FIG. 13 is a right vertical cross-sectional side view showing a state in which an upper die and a lower die used in the production when the net body of the present invention is vertically asymmetrical are combined.
【図１４】本発明網体の誘導帯の機能を説明する為の模
式的側面図で、（Ａ）がゲ−トから樹脂を注入した場
合、（Ｂ）が樹脂が満たされた場合、（Ｃ）が網糸部へ
樹脂が浸透する場合を夫々示す。FIG. 14 is a schematic side view for explaining the function of the induction zone of the mesh body of the present invention, where (A) is the case where the resin is injected from the gate, (B) is the case where the resin is filled ( C) shows the case where the resin penetrates into the mesh yarn portion, respectively.
【図１５】従来の網体を示す縦断側面図である。FIG. 15 is a vertical sectional side view showing a conventional net body.
１ 網体 ２ 枠体 ３ 網糸部 ３ａ 縦糸 ３ｂ 横糸 ４ 誘導帯 ５ 上型 ６ 下型 ７ 枠溝 ８ 網溝 ８ａ 上縦溝 ８ｂ 上横溝 ９ａ 下縦溝 ９ｂ 下横溝 １０ 誘導溝 １１ ゲ−ト １２ 上型 １３ 下型 １４ 枠溝 １５ａ 縦溝 １５ｂ 横溝 １５ｃ 交差部 １６ 誘導溝 １７ ゲ−ト DESCRIPTION OF SYMBOLS 1 Net 2 Frame 3 Net thread 3a Warp 3b Weft 4 Induction band 5 Upper mold 6 Lower mold 7 Frame groove 8 Net groove 8a Upper vertical groove 8b Upper horizontal groove 9a Lower vertical groove 9b Lower horizontal groove 10 Induction groove 11 Gate 12 Upper mold 13 Lower mold 14 Frame groove 15a Vertical groove 15b Horizontal groove 15c Intersection 16 Guide groove 17 Gate
Claims (6)
体において、下記の条件を満たす誘導帯を配し、 誘導帯：（ａ）網糸と連通し、（ｂ）ゲ−トから圧入さ
れた溶融樹脂を貯留する少なくとも網糸より太径の帯体
を形成し、（ｃ）その帯体は枠に連通しない蓄圧可能な
閉鎖状とし、（ｄ）その蓄積圧で連通した網糸に溶融樹
脂を浸透させる浸透領域を形成する、当該誘導帯との浸
透領域を端部で重ね合わせて網体を連続させて一体的に
成型したことを特徴とするプラスチック製の網体。1. A plastic net body for forming a mesh in a frame, wherein an induction zone satisfying the following conditions is arranged, and the induction zone: (a) communicates with a mesh yarn, and (b) is press-fitted from a gate. Forming a band having a diameter at least larger than that of the net thread for storing the molten resin, (c) the band is in a closed state capable of accumulating and does not communicate with the frame, and (d) is fused to the mesh thread communicating with the accumulated pressure. A net made of plastic, characterized in that a net is formed integrally by continuously forming nets by overlapping the permeation region with the induction zone at the end, which forms a permeation region for resin penetration.
体において、下記の条件を満たす誘導帯を配し、 誘導帯：（ａ）網糸と連通し、（ｂ）ゲ−トから圧入さ
れた溶融樹脂を貯留する少なくとも網糸より太径の帯体
を形成し、（ｃ）その帯体は枠に連通しない蓄圧可能な
閉鎖状とし、（ｄ）遠隔部を中心部より太径とし、
（ｅ）その蓄積圧で連通した網糸に溶融樹脂を浸透させ
る浸透領域を形成する、当該誘導帯との浸透領域を端部
で重ね合わせて網体を連続させて一体的に成型したこと
を特徴とするプラスチック製の網体。2. A plastic net body forming a mesh in a frame, provided with an induction zone satisfying the following conditions: induction zone: (a) communicating with a mesh yarn, (b) press-fitted from a gate Forming a band having a diameter larger than that of the net yarn for storing the molten resin, (c) the band has a closed shape capable of accumulating and does not communicate with the frame, and (d) the remote portion has a diameter larger than the central portion,
(E) Forming an infiltration region for infiltrating the molten resin into the mesh yarn that is in communication with the accumulated pressure, and overlapping the infiltration region with the induction zone at the end so that the mesh body is continuously formed integrally. Characteristic plastic net.
体において、下記の条件を満たす誘導帯を配し、 誘導帯：（ａ）網糸と連通し、（ｂ）ゲ−トから圧入さ
れた溶融樹脂を貯留する少なくとも網糸より太径の帯体
を形成し、（ｃ）その帯体は枠に連通しない蓄圧可能な
閉鎖状とし、（ｄ）その蓄積圧で連通した網糸に溶融樹
脂を浸透させる浸透領域を形成する、当該誘導帯から上
側に縦糸又は横糸のいずれか一方を同一面上に並設し、
下側にもう一方の縦糸又は横糸を同一面上に並設し、そ
の交差部を融合一体化させた網糸を浸透させ、当該浸透
領域を端部で重ね合わせて網体を連続させて一体的に成
型したことを特徴とするプラスチック製の網体。3. A plastic net body forming a mesh in a frame, provided with an induction zone satisfying the following conditions: induction zone: (a) communicates with a mesh yarn, and (b) is press-fitted from a gate. Forming a band having a diameter at least larger than that of the net thread for storing the molten resin, (c) the band is in a closed state capable of accumulating and does not communicate with the frame, and (d) is fused to the mesh thread communicating with the accumulated pressure. Forming a permeation region for permeating the resin, one of the warp yarn or the weft yarn is arranged side by side on the same plane from the induction zone,
On the lower side, the other warp yarn or weft yarn is arranged side by side on the same plane, and the mesh yarns in which the intersecting portions are fused and integrated are permeated, and the permeation regions are overlapped at the ends to make the mesh body continuous and integrated. A net made of plastic, which is characterized by being molded in a mechanical manner.
に向けて放射状をなすように形成した特許請求の範囲第
１項ないし３項のうちいずれか１項記載のプラスチック
製網体。4. The plastic net body according to any one of claims 1 to 3, wherein the guide band is formed so as to extend radially from a substantially central position of the net thread portion. .
成する網溝を刻み、当該網溝に下記の条件を満たす誘導
溝を形成した上型を配し、 誘導帯：（ａ）網溝と連通し、（ｂ）ゲ−トから圧入さ
れた溶融樹脂を貯留する少なくとも網糸より太径の空間
を形成し、（ｃ）その空間は枠に連通しない蓄圧可能な
閉鎖状とし、（ｄ）その蓄積圧で連通した網溝に溶融樹
脂を浸透させる浸透領域を形成する、上記上型と対称を
成す下型を配し、当該上型と下型とを組合せ、ゲ−トか
ら溶融樹脂を注入し、冷却後、脱型して得るプラスチッ
ク製網体の射出成形による製造方法。5. An upper die, which is surrounded by a frame groove, is engraved with a net groove for forming a net thread, and a guide groove satisfying the following conditions is formed in the net groove. ) A space having a diameter larger than that of at least the mesh thread for communicating with the mesh groove and (b) storing the molten resin pressed from the gate is formed, and (c) the space has a closed shape capable of accumulating pressure and does not communicate with the frame. (D) A lower mold which is symmetrical with the above upper mold and which forms a permeation region for permeating the molten resin into the mesh groove communicated by the accumulated pressure is arranged, and the upper mold and the lower mold are combined to form a gate. A method for producing a plastic net body by injection molding, in which a molten resin is injected, cooled, and then demolded.
横糸のいずれか一方を形成する縦溝又は横溝を刻んだ網
溝を形成し、当該網溝に下記の条件を満たす誘導溝を形
成した上型を配し、 誘導帯：（ａ）網溝と連通し、（ｂ）ゲ−トから圧入さ
れた溶融樹脂を貯留する少なくとも網糸より太径の空間
を形成し、（ｃ）その空間は枠に連通しない蓄圧可能な
閉鎖状とし、（ｄ）その蓄積圧で連通した網溝に溶融樹
脂を浸透させる浸透領域を形成する、同様に周囲を枠溝
で囲い、その内側に上記上型と逆の縦糸又は横糸を形成
する縦溝又は横溝を刻んだ網溝を形成し、当該網溝に上
記と同様の条件を満たす誘導溝を形成した下型を配し当
該上型と下型とを縦溝及び横溝とが交差するよう組合
せ、ゲ−トから溶融樹脂を注入し、冷却後、脱型して得
るプラスチック製網体の射出成形による成形方法。6. A surrounding groove is surrounded by a frame groove, and a net groove in which a warp thread or a weft thread is formed to form either a warp thread or a weft thread is formed inside, and a guide groove satisfying the following conditions is formed in the net groove. The formed upper mold is arranged, and the induction zone: (a) communicates with the net groove, and (b) forms a space having a diameter larger than at least the net yarn for storing the molten resin press-fitted from the gate, (c) The space has a closed shape capable of accumulating pressure and does not communicate with the frame, and (d) forms a permeation region that allows the molten resin to permeate into the mesh groove that communicates with the accumulating pressure. Forming a net groove engraved with a vertical groove or a horizontal groove forming a warp thread or a weft thread opposite to that of the upper die, and arranging a lower die in which a guide groove satisfying the same conditions as above is formed in the net groove, the upper die and the lower die The mold is assembled so that the vertical groove and the horizontal groove intersect with each other, molten resin is injected from the gate, cooled, and then released from the mold. Molding method by injection molding of plastic mesh sleeve.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30820592A JPH0720677B2 (en) | 1992-06-18 | 1992-10-21 | Plastic net and its manufacturing method |
| US08/078,974 US5423893A (en) | 1992-06-18 | 1993-06-17 | Plastic filter, its injection molding die and producing method |
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18446492 | 1992-06-18 | ||
| JP4-184464 | 1992-07-21 | ||
| JP4-215614 | 1992-07-21 | ||
| JP21561492 | 1992-07-21 | ||
| JP30820592A JPH0720677B2 (en) | 1992-06-18 | 1992-10-21 | Plastic net and its manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0687174A JPH0687174A (en) | 1994-03-29 |
| JPH0720677B2 true JPH0720677B2 (en) | 1995-03-08 |
Family
ID=27325430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30820592A Expired - Lifetime JPH0720677B2 (en) | 1992-06-18 | 1992-10-21 | Plastic net and its manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0720677B2 (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU5873196A (en) * | 1995-06-07 | 1996-12-30 | Localmed, Inc. | Infusion sleeve catheter having distal distribution manifold |
| JPH10113518A (en) * | 1996-10-08 | 1998-05-06 | Daizo Kotaki | Mold for plastic filter and its molded articles |
| JP3888268B2 (en) * | 2002-08-30 | 2007-02-28 | カセン産業株式会社 | Synthetic resin container and its manufacturing method |
| JP5007463B2 (en) * | 2005-11-07 | 2012-08-22 | 株式会社 ダイサン | Plastic products and their molds |
| DE102008027522A1 (en) | 2007-06-11 | 2009-02-05 | Kabushiki Kaisha Daisan, Ashikaga-shi | Thin-walled molded article |
| JP5228197B2 (en) * | 2007-06-11 | 2013-07-03 | 株式会社 ダイサン | Thin molded product and box |
| NZ628904A (en) * | 2012-10-17 | 2016-08-26 | Formway Furniture Ltd | Injection moulded article |
| JP6242127B2 (en) * | 2013-09-06 | 2017-12-06 | 大和製罐株式会社 | Mold and method for manufacturing molding net |
| JP6453667B2 (en) * | 2015-02-23 | 2019-01-16 | 株式会社エンプラス | Mesh filter injection mold and mesh filter injection molding method |
| WO2016158817A1 (en) * | 2015-03-31 | 2016-10-06 | 株式会社エンプラス | Mesh filter |
| JP6778013B2 (en) * | 2016-05-11 | 2020-10-28 | 株式会社エンプラス | Mesh filter |
| WO2019181158A1 (en) * | 2018-03-19 | 2019-09-26 | 株式会社村田製作所 | Filtration filter and filtration device |
-
1992
- 1992-10-21 JP JP30820592A patent/JPH0720677B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0687174A (en) | 1994-03-29 |
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