1230034 玖、發明說明： t發明所屬技領域]1 發明領域 本發明係有關製造定位成型襯墊的方法，尤係關於一 5 種具有非圓形截面之定位成型密封襯墊的製造方法。 發明背景 電子裝置諸如電視、收音機、電腦、醫療器材、商務 機器、電信設備、行動電話等之操作，通常會有電磁輕射 10 產生於其電子迴路中。該輪射時常會在電磁頻講的射頻頻 帶中，即在約ΙΟΚΗζ至10GHz之間的頻帶内來產生一電磁 場，俗稱“電磁干擾”或“ΕΜΓ 。該EMI會干擾在該EMI 發射裝置附近之其它電力裝置的操作。故，長久以來在電 子領域中改善該EMI乃為一重要課題。 15 一種用來改善EMI作用的最普通方法，係在該射源裝 置中裝設屏罩，其能夠吸收及/或反射EMI的能量，而來 囿限該EMI能量並使其它裝置與該EMI射源裝置隔絕。該屏 罩典型會在該射源裝置與其它裝置之間來形成一障壁，且 為一導電材料。但是，大部份的裝置一般必須保持能供維 20 修，因此其殼體會設有可開放的通路，例如門、窗、嵌板、 或蓋等。而這些通道開孔時常會存有間隙，故會減低屏蔽 的效率，因輻射能量可能會經由此等開孔洩漏或進出該裝 置。 襯墊及其它密封物會被用來填塞該等殼體配接表面中 1230034 =隙m咖絲纽止水分和灰㈣㈣。 搶封襯塾諸轉，或機械式義接 邮 封物必須具有表面導電性—即使在壓;=用Γ密 知生產並此承受重複的壓縮和放鬆循環。 10 2統的刪屏蔽襯墊之製造方法包括擠押、成型、或 ^專’而成型或模切係普遍使料特別小或複雜的屏蔽 、-、。構。錢切係由-固化片材或—導電的彈性體 襯塾’其會被使用-模具來切割或冲壓成所需形狀。而成 型則包括將-熱塑性彈性材料壓縮或射出成型為所需的構 造。 另一種用來製造EMI密封塾的技術為定位成型法。此 種方法係將一呈流質狀態的黏性、可固化之導電成分料條 15塗佈在-基材表面，例如一殼體或其它封罩上。該成分典 型為-含銀的石夕膠彈性材料，嗣會經由加熱或以大氣水: 或紫外線(UV)照射來在定位固化，而在該基材表面之原位 上形成一導電的彈性EMI屏罩密封墊。因其係在該基材表 面的疋位上來直接形成並固化該密封物，故將不需要分開 2〇製造及安裝的步驟。且，該密封物係可直接黏附於人基材 表面上，故可進一步免除用來將該密封物固接於基材上之 黏劑或其它裝置的需要。相對於較普遍的模切或成型製 法，該定位成型法係可減少廢料的產生。並較無需大量人 力’即對複雜密封塾形狀的人手組合，或將該密封墊裝入 1230034 定位等之人力需求乃可消除。該方法更可適用於一自動化 或機器人控制的操作中，且亦能在大氣壓力下不必使用模 具而來製成複雜的密封物形狀。 但，複雜襯墊形狀（即非圓形或半圓形截面者）的製造， 5 通常需要多次的佈設行程，因為該襯料的圓形膏條需被妥 當地配佈。以該配佈或擠押裝置來塗佈多次將會耗費時間 而增加生產成本。並且，一圓形的料條通常不能為非圓形 截面提供最佳的填塞密封。 因此，在該領域中乃亟需一種能夠製造具有複雜截面 10 的屏罩密封物，並能減少配佈時間且具有改良的密合度之 方法。緣是，本發明的目的即在提供一種製造具有複雜截 面之環境密封及/或EMI/RFI屏罩密封襯墊的方法，且能有 較少的配佈時間和改善的密合度者。 L發明内容3 15 發明概要 本發明係為一種定位成型之襯墊的製造方法。該方法 包括提供一基材其具有一表面可承納一具有非圓形截面的 襯塾。一穩定成型的流質材料具有一截面完全匹配該非圓 形截面，將會被擠押於該表面上，嗣該流質材料會被固化 20 而來形成該密封襯墊。 本發明現將參照以下圖式來更詳細說明。 圖式簡單說明 第1圖為一兩片式殼體的部份截面圖，該殼體具有相對 的通道當接合時會形成一非圓形截面而可承納一 EMI屏蔽 1230034 襯塾。 第2圖為一配佈喷嘴的正视圖，其具有一孔口可配佈該 襯墊材料而完全匹配於第1圖之兩片式殼體所形成的非圓 形截面。 5 第3圖為第1圖之一殼體的部份截面圖，在其通道内已 被以第2圖的喷嘴來配佈一具有非圓形截面的襯墊。 第4圖為一三角形截面的襯墊材料正被押出的立體 圖’其係由一垂直設置而具有三角形對應截面的喷嘴沿一 垂直於基材之軸來轉動時所押出者。 10 第5圖為一三角形截面的襯墊材料由一水平設置的喷 嘴在沿一垂直於基材之軸轉動時來被押出的立體圖。 第6圖為一般使用的襯墊形狀之截面圖，其可使用本發 明的方法來製成。 第7圖為以垂直喷嘴所押出之襯墊的截面圖，惟該喷嘴 15相對於基材表面並未完全對正（即歪斜）而致影響該襯墊的 形狀。 I：實施方式；1 較佳實施例之詳細說明 本發明係提供一種能以較少的配佈時間來製造具有複 2〇雜截面之定位成型讀襯塾的方法。如上所述，定位成塑 的密封襯墊在以往係使用槻材的圓形料條來製成。具有複 雜截面諸如非圓形截面之需要密封的表面，典裂需要以該 Y料條塗佈或充填多次才能形成複雜裁面的密封墊。今 " 、疋本叙明所提供的方法能藉押出截面匹配於所 1230034 需襯墊的密封材料，而來減少製造時間。此須先提供一基 材具有一表面可供承接一具有複雜裁面的襯墊。嗣一截面 匹配於禮袓雜截面之穩定成型的流質材料會被擠押於該表 面上。該流質材料在擠出後即會固化而形成該襯墊。 5 請參閱第1圖，一將被設置一襯墊之非限制例的基材係 被示出呈一雙片式殼體10而來相對列設。該下殼體12含有 通道14會形成一矩形截面（即一複雜截面）。一對應的上殼體 16具有對應的通道18係被相對設置。當該殼體12和16以相 反方向來接合在一起時，通道14和18將會形成一方形截面 10 而可承納本發明之密封襯墊。任何具有一表面可承納有複 雜截面之襯墊的基材，皆可使用本發明來佈設定位成型的 襯塾。於此所述的“複雜截面”係指由一或多個基材所形 成之任何非圓形或半圓形的截面。可依本發明來形成的複 雜截面之例係為方形、矩形、三角形或任何其它的多邊形 15 截面。 第2圖係示出一配佈喷嘴100的正視圖，其具有一孔口 102會完全匹配於第1圖之通道14和18所形成的方形戴面之 形狀尺寸。如第3圖所示’該喷嘴100當與一擠押器（未示出） 一起使用時，會以具有所需截面的擠出襯墊材料104來填入 20該通道14中。令擠出材料匹配於所需的襯墊截面’將可便 於在該基材上通過一次即告完成地製成該襯墊，並同時能 形成更佳的密封。在固化之後’一彈性襯墊即會形成於定 位。 該口孔截面匹配於所需襯墊之喷嘴，係可使用任何該 1230034 領域中所習知的技術來製成。為了方便起見，該喷嘴最好 係由一聚合材料例如熱塑性或熱固性聚合物來製成（例如 成型）。舉例而言，當該襯墊截面的尺寸形狀確定後，則一 所需的噴嘴即可藉一熱塑性聚合物的射出成型來製成。同 5 樣地，該噴嘴亦能用一可熱縮聚合物縮束於一具有該所需 複雜截面形狀的心軸上而來製成。其製造參數將可為一專 業人士所容易得知。 本發明所使用的襯墊材料係可為任何具有足夠靜凝性 而能如一穩定成型材料來被擠出的流質材料。於此所述之 10 “流質”係指能展現類似流體之性質而可經由一配佈喷嘴 來擠出的材料。“穩定成型，，係指被擠出的材料能夠完全 保持其受擠押的形狀，而不會現出任何可觀的塌陷，凹縮 或變形者。該流質材料較好是為一可固化的聚合材料，且 彈性材料更佳。該流質材料最好係利用一導電填料諸如金 15屬微粒或塗覆金屬的微粒來賦具導電性。供使用於定位成 型之EMI襯墊用途的流質材料在該領域中係已普遍公知。 該等材料可被以單一或雙成分系統來提供，且最好能在曝 現於周邊環境(例如大氣水分）時即會固化。此等材料之例乃 可見於第5910524及6096413號等美國專利中，其内容併此 20 附送參考。 用來將流質材料擠押（即配佈）於基材上的塗佈器3 3在 "亥領域中亦為習知者。該流質材料可藉設有該所需喷嘴的 填隙鎗或類似裝置來以人力塗佈於基材上。但是，商業用 途最好使用自動注射裝置，例如本身具有二或更多運動自 1230034 由度(x-y-z)或與一可移動枱結合的機器人塗佈器。該噴嘴 32相對於基材20、30的位置係可改變的，即可由一垂直於 基材的位置改變至一平行於該基材的位置，分別如第4及5 圖所示。垂直該基材30來定位該噴嘴32會具有令該喷嘴離 5開配佈路徑外的優點。此在當該流質材料被配佈於一凹槽 内或連接於其本身末端(例形成一〇形環墊)時，將會特別有 用0 10 15 又，由於其係配佈非圓形截面的料條，故最好該嘴嘴 32的孔口能相對於該基材20、30上之配佈路徑保持在—固 定角度，以確使該流質材料的所需截面能被維持。此乃可 藉容許該噴嘴32沿循該基材20、30上的配佈路徑轉動（即旋 轉）而來達成。此可參照第5圖而更容易瞭解。如第5圖所 示，該喷嘴孔口的位置係保持與其配佈路徑同一直線。此 係能以人手轉動該喷嘴而來達成，但亦可對該注射機器^ 添加更多的運動自由度而來自動地達成。於後者的情況 下，-小馬達會被-微處理器來㈣其轉，轉動二嗜 嘴或配佈頭，使其相對於該配佈路徑(或對半圓配佈补的 切線)之角度能保持固定。此相同的相對運動亦可使用： 定喷嘴並將基材置於一可移動枱(即旋轉枱)上而 該孔口相對於該表面上之㈣路㈣角度未被維持（即: 斜或不正），則所形成的截面亦會歪斜，如第= 的移動和角度，在擠出具有非圓 形截面的流質材料係為-重要的考量因素 51 令該喷嘴孔口匹配於襯塾截面將可便於在基材上以單 20 1230034 次塗佈來製成該襯墊。如前所述，用傳統之圓形流質材料 條來製成複雜截面，通常需要多次的行程才能形成該概塾 截面。同樣地，要擠出如第3及6圖所示之非圓形截面的流 質材料乃是不可能的。又，如專業人士所知，一形狀完全 5匹配於所需截面的擠出料條，將會比傳統之圓形料條所能 提供者達到更佳的填塞密封。故，本發明的方法將可達成 更快的製造時間，並使定位成型襯塾提供更佳的密封效果。 【圖式簡單說明】 第1圖為-兩片式毅體的部份截面圖，該殼體具有相對 10的通道當接合時會形成-非圓形截面而可承納一 EMI屏蔽 襯塾。 第2圖為-配佈喷嘴的正視圖’其具有_孔口可配佈該 概塾材料而完全匹配於第1圖之兩片式殼體所形成的非圓 形截面。 15 第3圖為第1圖之一殼體的部份截面圖，在其通道内已 被以第2圖的噴嘴來配佈一具有非圓形截面的襯墊。 第4圖為一三角形截面的襯墊材料正被押出的立體 圖，其係由一垂直设置而具有三角形對應截面的喷嘴沿一 垂直於基材之軸來轉動時所押出者。 20 第5圖為一三角形截面的襯墊材料由一水平設置的噴 嘴在沿一垂直於基材之軸轉動時來被押出的立體圖。 第6圖為一般使用的襯墊形狀之截面圖，其可使用本發 明的方法來製成。 第7圖為以垂直喷嘴所押出之襯墊的截面圖，惟該噴嘴 12 1230034 相對於基材表面並未完全對正（即歪斜）而致影響該襯墊的 形狀。 【圖式之主要元件代表符號表】 10…雙片式殼體 32，100…配佈喷嘴 12…下殼體 33…塗佈器 14，18···通道 102···孑 L 口 16…下殼體 20，30…基材 104…襯墊材料 131230034 (1) Description of the invention: [Technical field to which the invention belongs] [1] Field of the invention The present invention relates to a method for manufacturing a positioning molding gasket, and more particularly to a method for manufacturing 5 positioning molding gaskets having a non-circular cross section. BACKGROUND OF THE INVENTION The operation of electronic devices such as televisions, radios, computers, medical equipment, business machines, telecommunications equipment, mobile phones, etc., usually results in electromagnetic light emission 10 in their electronic circuits. This round shot often generates an electromagnetic field in the radio frequency band of electromagnetic frequency, that is, a frequency band between about 10KΗζ to 10GHz, commonly known as "electromagnetic interference" or "ΕΜΓ." This EMI will interfere with the vicinity of the EMI transmitting device. The operation of other power devices. Therefore, it has long been an important issue to improve the EMI in the electronics field. 15 One of the most common methods to improve the effect of EMI is to install a screen in the source device, which can absorb And / or reflect EMI energy to limit the EMI energy and isolate other devices from the EMI source device. The shield typically forms a barrier between the source device and other devices, and is a Conductive materials. However, most of the devices must generally be able to be repaired for 20 years, so the housing will be provided with openable paths, such as doors, windows, panels, or covers. These channels often have holes in them. There is a gap, which will reduce the shielding efficiency, as radiant energy may leak through these openings or into and out of the device. Gaskets and other seals will be used to fill the mating surfaces of these housings 1230034 = Gap m coffee wire to stop moisture and gray dust. The seal lining must be turned, or the mechanical seal must be surface conductive-even under pressure; = produced with Γ and known to withstand repeated compression and Relax the cycle. The manufacturing methods of the conventional shielding gaskets include extrusion, molding, or special molding, and the molding or die-cutting generally makes the shielding of the material particularly small or complicated.-,. Cured sheet or-conductive elastomer liners-which are cut or stamped into the desired shape using a mold. Molding involves compression or injection molding of the thermoplastic elastomer into the desired configuration. Another is used to The technology for manufacturing the EMI seal is a positioning molding method. This method is to apply a viscous, curable conductive component strip 15 in a liquid state on the surface of a substrate, such as a shell or other enclosure. The composition is typically-silver-containing rubber material, which will be cured by heating or exposure to atmospheric water: or ultraviolet (UV) radiation, and a conductive elastic EMI will be formed in situ on the surface of the substrate. Screen seal gasket because it is attached to the surface of the substrate The seal is directly formed and cured from the niche, so there is no need to separate the manufacturing and installation steps. Moreover, the seal can be directly adhered to the surface of the human substrate, so the seal can be further exempted. The need for adhesive or other devices fixed on the substrate. Compared to the more common die-cutting or molding methods, this positioning molding method can reduce the generation of waste. Manpower requirements, or the need to install the gasket into 1230034 for positioning, can be eliminated. This method is more suitable for an automated or robot-controlled operation, and can also be made complex without using a mold under atmospheric pressure. The shape of the seal. However, the manufacture of complex gasket shapes (that is, those with non-circular or semi-circular cross-sections), 5 usually requires multiple routing strokes, because the circular paste of the lining needs to be properly clothed . Applying the coating or extrusion device multiple times will consume time and increase production costs. Also, a round bar does not usually provide the best packing seal for non-circular sections. Therefore, there is an urgent need in this field for a method capable of manufacturing a mask seal having a complex cross section 10 and capable of reducing the distribution time and having improved adhesion. The reason is that the object of the present invention is to provide a method for manufacturing an environmental seal and / or an EMI / RFI shield sealing gasket with a complex cross section, which can have less deployment time and improved closeness. L SUMMARY OF THE INVENTION 15 15 Summary of the Invention The present invention is a method for manufacturing a positioning-molded gasket. The method includes providing a substrate having a surface capable of receiving a liner having a non-circular cross section. A stably formed fluid material having a cross section that exactly matches the non-circular cross section will be squeezed onto the surface, and the fluid material will be cured to form the sealing gasket. The present invention will now be described in more detail with reference to the following drawings. Brief Description of the Drawings Figure 1 is a partial cross-sectional view of a two-piece housing. The housing has opposite channels. When joined, it forms a non-circular cross-section and can receive an EMI shield 1230034 lining. Fig. 2 is a front view of a cloth matching nozzle, which has an opening to which the gasket material can be arranged to perfectly match the non-circular cross section formed by the two-piece housing of Fig. 1. 5 Fig. 3 is a partial cross-sectional view of one of the shells of Fig. 1. A gasket having a non-circular cross-section has been arranged in the channel with the nozzle of Fig. 2. Fig. 4 is a perspective view of a triangular cross section of the gasket material being extruded. It is an extruder when a nozzle vertically arranged with a triangular corresponding cross section is rotated along an axis perpendicular to the substrate. 10 Figure 5 is a perspective view of a triangular cross-section gasket material being extruded by a horizontally arranged nozzle while rotating along an axis perpendicular to the substrate. Fig. 6 is a cross-sectional view of a generally used pad shape, which can be produced by the method of the present invention. Figure 7 is a cross-sectional view of a gasket extruded by a vertical nozzle, but the nozzle 15 is not completely aligned (that is, skewed) with respect to the surface of the substrate, which affects the shape of the gasket. I: Embodiment; 1 Detailed description of the preferred embodiment The present invention provides a method capable of manufacturing a positioning forming read lining having a complex 20 cross section with less cloth deployment time. As described above, conventionally formed sealing gaskets have been made using a circular bar of cymbal. Sealed surfaces with complex cross-sections, such as non-circular cross-sections, need to be coated or filled multiple times with this Y-strip to form a complex gasket. Today " and the method provided in this description can reduce the manufacturing time by extruding the sealing material whose cross-section matches the required gasket of 1230034. This must first provide a substrate with a surface to accept a pad with a complex cut. A cross-section of a stable formed fluid material that matches the cross section of the ceremonial ridge will be squeezed onto the surface. The liquid material is cured to form the pad after extrusion. 5 Referring to FIG. 1, a base material of a non-limiting example in which a gasket is to be provided is shown as a two-piece housing 10 and arranged oppositely. The lower casing 12 contains the channel 14 and forms a rectangular cross section (that is, a complex cross section). A corresponding upper case 16 has a corresponding channel 18 and is oppositely disposed. When the shells 12 and 16 are joined together in opposite directions, the channels 14 and 18 will form a square cross-section 10 to accommodate the sealing gasket of the present invention. Any substrate having a gasket with a surface capable of receiving a complex cross-section can be used to form a liner formed by positioning. As used herein, "complex cross-section" refers to any non-circular or semi-circular cross-section formed by one or more substrates. Examples of complex cross sections that can be formed in accordance with the present invention are square, rectangular, triangular, or any other polygonal 15 cross sections. Fig. 2 is a front view of a cloth-dispensing nozzle 100, which has an orifice 102 that will exactly match the shape and size of the square wearing surface formed by the channels 14 and 18 of Fig. 1. As shown in Fig. 3 ', the nozzle 100, when used with an extruder (not shown), will fill 20 the channel 14 with an extruded gasket material 104 having a desired cross section. Matching the extruded material to the desired cross section of the gasket ' will allow the gasket to be made on the substrate in a single pass, while at the same time forming a better seal. After curing 'an elastic cushion is formed in position. The orifice cross-section matches the nozzle of the desired gasket and can be made using any technique known in the 1230034 art. For convenience, the nozzle is preferably made (e.g., molded) of a polymeric material such as a thermoplastic or thermosetting polymer. For example, after the size and shape of the cross section of the gasket is determined, a required nozzle can be made by injection molding of a thermoplastic polymer. Similarly, the nozzle can also be made by shrinking a heat-shrinkable polymer onto a mandrel having the required complex cross-sectional shape. Its manufacturing parameters will be easily known to a professional. The pad material used in the present invention may be any fluid material having sufficient hydrostatic property to be extruded as a stable molding material. 10 "Liquid" as used herein refers to a material that exhibits fluid-like properties and can be extruded through a dispensing nozzle. "Stable molding means that the extruded material can fully maintain its squeezed shape without showing any considerable collapse, shrinkage or deformation. The fluid material is preferably a curable polymer Material, and elastic material is better. The liquid material is best to use a conductive filler such as gold 15 particles or metal-coated particles to impart conductivity. The liquid material used for positioning and forming EMI gaskets is here These materials are generally known in the art. These materials can be provided in a single or two-component system, and are preferably cured when exposed to the surrounding environment (such as atmospheric moisture). Examples of such materials can be found in Section The contents of US Patent Nos. 5910524 and 6096413 are incorporated herein by reference. The applicator 3 used to squeeze (ie, distribute) the fluid material onto the substrate is also a known person in the field of " Hai The liquid material can be manually applied to the substrate by an interstitial gun or similar device provided with the required nozzle. However, it is best to use an automatic injection device for commercial use, for example, it has two or more movements since 1230034. by (xyz) or a robotic applicator combined with a movable table. The position of the nozzle 32 relative to the substrate 20, 30 can be changed, that is, from a position perpendicular to the substrate to a parallel to the substrate The positions are shown in Figures 4 and 5, respectively. Positioning the nozzle 32 perpendicular to the substrate 30 will have the advantage of leaving the nozzle away from the distribution path. This is when the fluid material is distributed in a recess. It is particularly useful when it is connected to the end of the groove (for example, to form a 10-ring pad). 0 10 15 Also, because it is equipped with a non-circular cross-section strip, the hole of the mouth 32 is best. The mouth energy can be maintained at a fixed angle relative to the distribution path on the substrates 20 and 30 to ensure that the required cross-section of the fluid material can be maintained. This can be achieved by allowing the nozzle 32 to follow the substrates 20 and 30. The distribution path on 30 is achieved by rotating (ie, rotating). This can be more easily understood with reference to Figure 5. As shown in Figure 5, the position of the nozzle orifice is kept in line with its distribution path. This system Can be achieved by manually turning the nozzle, but it is also possible to add more movement to the injection machine ^ It is automatically achieved by the degree. In the latter case, the-small motor will be turned by the-microprocessor, turning the mouthpiece or the cloth distribution head so that it is relative to the cloth distribution path (or cloth distribution to the semicircle). The angle of the tangent line can be kept fixed. This same relative movement can also be used: the nozzle is set and the substrate is placed on a movable table (that is, a rotary table) and the orifice is opposite to the road on the surface If the angle is not maintained (ie: oblique or incorrect), the resulting cross-section will also be skewed, such as the movement and angle of the =. When extruding liquid materials with non-circular cross-sections is-important considerations 51 make this Matching the nozzle orifice to the cross-section of the liner will make it easy to make the gasket in a single 20 1230034 coats on the substrate. As mentioned previously, traditional cross-shaped strips of fluid material are often used to make complex cross-sections. Multiple strokes can form the approximate cross section. Similarly, it is impossible to extrude a fluid material having a non-circular cross section as shown in Figs. 3 and 6. In addition, as known to professionals, an extruded strip with a shape exactly matching the required cross-section will achieve a better packing seal than the traditional round strip can provide. Therefore, the method of the present invention can achieve faster manufacturing time and make the positioning and forming liner provide better sealing effect. [Brief description of the figure] Figure 1 is a partial cross-sectional view of a two-piece body. The housing has a channel of 10 relative to it. When joined, it forms a non-circular cross-section and can accept an EMI shielding liner. Fig. 2 is a front view of a cloth-distributing nozzle, which has an orifice that can be equipped with the general material and perfectly matches the non-circular cross-section formed by the two-piece housing of Fig. 1. 15 Figure 3 is a partial cross-sectional view of one of the shells of Figure 1. In the channel, a gasket with a non-circular cross-section has been arranged with the nozzle of Figure 2. Fig. 4 is a perspective view of a triangular cross-section gasket material being extruded, which is extruded when a nozzle vertically arranged with a triangular corresponding cross section is rotated along an axis perpendicular to the substrate. 20 Figure 5 is a perspective view of a triangular cross-section gasket material being extruded by a horizontally arranged nozzle when it is rotated along an axis perpendicular to the substrate. Fig. 6 is a cross-sectional view of a generally used pad shape, which can be produced by the method of the present invention. Figure 7 is a cross-sectional view of a gasket extruded by a vertical nozzle, but the nozzle 12 1230034 is not completely aligned (that is, skewed) with respect to the surface of the substrate, which affects the shape of the gasket. [Representative symbols for the main components of the drawing] 10… Double-piece housing 32,100… Distribution nozzle 12… Lower housing 33… Applicator 14, 18 ... Channel 102 ... L port 16 ... Lower case 20, 30 ... base material 104 ... gasket material 13