201235216 六、發明說明： 【發明所屬之技術領域】 本發明是有關於一種彈性發泡材及其貼合製程，201235216 VI. Description of the Invention: [Technical Field of the Invention] The present invention relates to an elastic foam material and a bonding process thereof,
是指一種彈性發泡材及其無溶劑貼合製程。 寺另J 【先前技術】 傳統在進行塑膠（或橡膠）發泡多層體的貼合製 時，例如瑜珈墊，是先把各層所使用的塑膠發泡材料製 成捲材備用，再將各層捲材拉出，於各層捲材之間塗布膠 黏劑，使各層捲材壓合、黏著在一起，待膠黏劑乾燥，最 後經修邊、裁切等加工處理，以製作成形出一塑膠發 層體產品。 '夕 由此可知，上述塑膠發泡多層體的傳統製程，不但製 私繁瑣耗時、製作成本高，且生產良率不易控制尤其是 製程所使用的膠黏劑通常含有高污染性、高毒性的有機溶 劑，不僅會對製程人員或是產品使用者造成身體健康上的 威脅與危害’例如·♦引發皮膚或呼吸道疾病，且整個製程 也會大量排放V0Cs、eh與有毒廢料，對環境造成嚴重的 負面衝擊。 【發明内容】 因此，本發明之目的，即在提供一種製程簡化、製造 成本低、生產良率高，且健康、安全又環保之彈性發泡材 及其無溶劑貼合製程。 於是’本發明之彈性發泡材的無溶劑貼合製程，包含 下列步驟：（a)將一熱塑彈性材料押出成形為一熔融狀的押 201235216 出膜層’（b)另取一第一發泡層；（c)將該第一發泡層疊合在 熔融狀之該押出膜層的一表面；以及（d)進行冷滾壓處理， 使該押出膜層與該第一發泡層壓合並冷卻。 本發明之彈性發泡材，包含一押出膜層，以及一第一 發泡層。該押出膜層是熱塑彈性材料製’且能從一熔融狀 1、冷卻成固化狀態。該第一發泡層之一表面與呈熔融狀 態之押出膜層的一表面冷滾壓並熔接在一起。 本發明之功效在於，將第一發泡層與呈高溫熔融狀之 押出膜層疊合’再進行冷滾壓處理，便能使押出膜層與第 :發泡層壓合並冷卻成形為一彈性發泡材，不但讓本發明 製簡化成本低且良率高，尤其全程未使用含有機溶劑 的黏著劑’更讓本發明兼具健康、安全又環保的特點。 【實施方式】 “ 有關本發明之前述及其他技術内容、特點與功效，在 以下配合參考圖式之三個較佳實施例的詳細說明中，將可 清楚的呈現。 如圖1與圖2所示，本發明之彈性發泡材及其無溶劍 貼合製程的一第一較佳實施例i所示該彈性發泡材2 是包含-押出膜層21，以及一其一表面與該押出膜層。之 一表面211熔接在一起的第一發泡層22。 、而圖2所不該彈性發泡材的無溶劑貼合製程是用以製 造成形出上述彈性發泡材2甚σ /JX 何2產，並包含步驟（a)至步驟 ⑷： 在步驟（a) ’將調配得的 一熱塑彈性材料 先投置入一 201235216 乾燥筒1内，再送進入一押出設備3，以押出成形高溫熔融 狀的該押出膜層21。 所述熱塑彈性材料，指的是苯乙烯-乙烯-丁烯-苯乙烯 彈性體（Styrene-Ethylene-Butylene-Styrene Elastomer，簡 稱SEBS )、苯乙烯-異戊二烯-苯乙烯彈性體（Styrene-Isoprene-Styrene Elastomer，簡稱 SIS)、乙烯-醋酸乙稀酉旨 共聚合物（Ethylene-Vinyl acetate Copolymer，簡稱 EVA)、 低密度聚乙稀（Low Density Polyethylene，簡稱 LDPE)、 高密度聚乙稀（High Density Polyethylene，簡稱 HDPE)、 線性低密度聚乙浠（Linear Low Density Polyethylene，簡稱 LLDPE )、聚丙烯（Polypropylene，簡稱PP )、聚苯乙烯 (Polystrene，簡稱 PS )、聚丁烯（Polybutylene )、聚乙稀 辛稀共聚物（Polyethylene-Octylene copolym.er)，或此等之 —組合。 將該熱塑彈性材料送進入該押出設備3後，其是先於 一台押出機内進行熔融、混練與押出，所得押出物再依序 流經一分流器與一 T形模頭，以能成形該押出膜層21。 該押出膜層21的溫度介於150°C〜250°C之間，且該押 出膜層21的厚度介於0.1毫米〜0.25毫米之間。 另一方面，在步驟（b)，取得該第一發泡層22，該第一 發泡層22的材質可以是選自於下列物所構成之群組： SEBS、電子束架橋發泡聚乙稀（Extruded Polyethylene Crosslinked by Electron Beam )、發泡聚乙烯（Extruded Polyethylene，簡稱EPE)、EVA，或此等之一組合；該第一 201235216 發泡層的厚度介於ο.1毫米〜ίο毫米之間；另外，必要 時該第發泡層22之一表面能已經網版印刷或壓花處理 過。 接著，進行步驟（c)，將該第一發泡層22之一表面（沒 有’周版印刷或壓花者）直接疊合在熔融狀之該押出膜層U 的該表面211。 然後進行步驟（d) ’將相疊合之該押出膜層21與該第一 發泡層22移送人—冷滾壓設備4中進行壓合與冷卻。 該冷滾壓a又備4具有三個上下依序排列的壓輪4丨、八 個位在所述壓輪41的右側處且兩兩成對地由左上方往右下 方傾斜排列的第—冷卻# 42，以及十四個由左至右地水平 間隔排列在所述八個第一冷卻輪42旁的第二冷卻輪Μ (圖 中並未顯示出全部）。而且，所述壓輪41的表面溫度是控 制在介於30°C〜90。(：之間。 該冷滾壓設備4還具有一循環式水冷機44，其能對所 述壓輪41内部分別軸向導入溫度介於15。(：〜95。(：的一水 體藉以對所述壓輪41施予水冷作用，確保所述壓輪41 的表面溫度控制在介於赃〜贼之間，而軸向穿流經所述 壓輪41内部且因吸熱而溫度升高的水體，會回流入該循環 式水冷機44令再利用，一旦該循環式水冷機44中之循環 使用的水體溫度高於25〇c，其制冷機制便會啟動，如額外 製備5 C〜10 C的冰水並注入循環使用的水體中，以確保輸 入所述壓輪41内部之水體的溫度維持在15〇c〜95<>c之間。 該冷滾壓設備4還具有一鄰近設置在其中二個壓輪41 201235216Refers to an elastic foam material and its solvent-free bonding process. Temple Other J [Prior Art] Traditionally, in the process of bonding plastic (or rubber) foamed multilayers, such as yoga mats, the plastic foam materials used in each layer are first made into coils, and then the layers are rolled. The material is pulled out, and the adhesive is applied between the layers of the coils, so that the layers of the coils are pressed and adhered together, and the adhesive is dried, and finally processed by trimming, cutting, etc., to form a plastic hair. Layer product. It can be seen from the above that the traditional process of the plastic foamed multilayer body is not only cumbersome and time-consuming, but also has high production cost, and the production yield is not easy to control, especially the adhesive used in the process usually contains high pollution and high toxicity. The organic solvent not only poses a health hazard or harm to the process personnel or product users. For example, ♦ causes skin or respiratory diseases, and the entire process also emits a large amount of V0Cs, eh and toxic waste, causing serious environmental damage. The negative impact. SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide an elastic foamed material and a solventless bonding process which are simplified in process, low in manufacturing cost, high in production yield, and healthy, safe and environmentally friendly. Thus, the solventless bonding process of the elastic foamed material of the present invention comprises the following steps: (a) extruding a thermoplastic elastomer into a molten form of 201235216 film layer' (b) taking a first a foaming layer; (c) laminating the first foam layer on a surface of the molten film layer; and (d) performing a cold rolling treatment to laminate the extruded film layer with the first foam layer Combined cooling. The elastic foamed material of the present invention comprises an extruded film layer and a first foamed layer. The extruded film layer is made of a thermoplastic elastomer and can be cooled from a molten state to a solidified state. One surface of the first foamed layer is cold rolled and welded to a surface of the extruded film layer in a molten state. The effect of the invention is that the first foam layer is laminated with the high-temperature molten extrusion film and then subjected to cold rolling treatment, so that the extruded film layer and the foam laminate are combined and cooled to form an elastic hair. The foam material not only makes the invention simple and cost-effective, but also has high yield. In particular, the adhesive agent containing organic solvent is not used in the whole process, and the invention has the characteristics of being healthy, safe and environmentally friendly. [Embodiment] The foregoing and other technical contents, features and effects of the present invention will be apparent from the following detailed description of the preferred embodiments of the accompanying drawings. FIG. 1 and FIG. The elastic foaming material 2 of the present invention is shown in a first preferred embodiment i of the elastic foaming material of the present invention, and the elastic foaming material 2 is an in-and-out film layer 21, and a surface thereof is extruded. a first foam layer 22 in which one surface 211 is welded together. However, the solventless bonding process of the elastic foam material in FIG. 2 is used to manufacture the above-mentioned elastic foam material 2 σ / JX He 2, and includes steps (a) to (4): In step (a), a thermoplastic elastomer material is placed in a 201235216 drying cylinder 1 and sent to an extrusion device 3 for extrusion. Forming the extruded film layer 21 in a high-temperature molten state. The thermoplastic elastomer material refers to a Styrene-Ethylene-Butylene-Styrene Elastomer (SEBS), styrene- Isoprene-styrene elastomer (Styrene-Isoprene-Styre Ne Elastomer (SIS), Ethylene-Vinyl acetate Copolymer (EVA), Low Density Polyethylene (LDPE), High Density (High Density) Polyethylene (HDPE), Linear Low Density Polyethylene (LLDPE), Polypropylene (PP), Polystyrene (PS), Polybutylene (Polybutylene), Polyethylene Polyethylene-Octylene copolym.er, or a combination thereof. After the thermoplastic elastomer is fed into the extrusion device 3, it is melted, kneaded and extruded prior to an extruder. The obtained extrudate is sequentially flowed through a diverter and a T-shaped die to form the extruded film layer 21. The temperature of the extruded film layer 21 is between 150 ° C and 250 ° C, and the extruded film The thickness of the layer 21 is between 0.1 mm and 0.25 mm. On the other hand, in the step (b), the first foam layer 22 is obtained, and the material of the first foam layer 22 may be selected from the following objects. Group of Group: SEBS, Extruded Polyethylene Crosslinked by Electron Beam, Extruded Polyethylene (EPE), EVA, or a combination thereof; the first 201235216 foam layer The thickness is between ο. 1 mm and ίο mm; in addition, if necessary, the surface energy of one of the first foam layers 22 has been screen printed or embossed. Next, step (c) is carried out to directly superimpose one surface (without 'peripheral printing or embossing) of the first foamed layer 22 on the surface 211 of the molten extruded film layer U. Then, the step (d) is carried out to transfer the superposed film layer 21 and the first foam layer 22 to the human-cold rolling apparatus 4 for press-fitting and cooling. The cold rolling a4 has three pressure rollers 4 上下 arranged one above the other, eight positions on the right side of the pressure wheel 41 and two pairs of pairs arranged obliquely from the upper left to the lower right. Cooling #42 and fourteen second cooling rims (not shown in the figure) are arranged horizontally spaced from left to right by the eight first cooling wheels 42. Moreover, the surface temperature of the pressure roller 41 is controlled to be between 30 ° C and 90 °. The cold rolling device 4 further has a circulating water cooler 44 which can axially introduce a temperature of 15 to the inside of the pressure roller 41. (: ~95. (: a body of water by means of The pressure roller 41 is subjected to water cooling to ensure that the surface temperature of the pressure roller 41 is controlled between the scorpion and the thief, and the water body axially flows through the inside of the pressure roller 41 and rises in temperature due to heat absorption. It will be recirculated into the circulating water cooler 44 for reuse. Once the temperature of the water used in the circulating water cooler 44 is higher than 25 〇c, the refrigeration mechanism will be started, such as the additional preparation of 5 C~10 C. The ice water is injected into the water body for recycling to ensure that the temperature of the water body input into the inside of the pressure roller 41 is maintained between 15 〇 c 95 95. The cold rolling device 4 also has a proximity disposed therein. Two pressure rollers 41 201235216
之間^的風刀45，該風刀45能朝所述二壓輪41吹出一 A 部氣體。 〜 因此，相疊合之該押出膜層21與該第一發泡層U在 移送入該冷滾麼設備4中後，會依序移經所述壓輪41 述第一冷料42與所述第三冷卻輪43，過程巾，所述 41會使該押出膜層21與該第—發泡層22滾壓、接合在一 起，利用呈高溫熔融狀之該押出膜層21所產生的黏性，以 及該第S泡層22之該表面在該押出膜層21之高溫作用 下會軟化，使得該押出膜層21肖該第一發泡層 合、接著成一體。 匕熔 而且，透過表面溫度介於3(rc〜9(rc的所述壓輪Μ， 以及所述第-冷卻輪42與所述第二冷卻輪4 滾麼作用，配合上該風刀45的氣冷作用，會使接合成= 的該押出膜層21與該第—發泡層22迅速冷卻、固化，藉 以製作成形出如圖1所示之彈性發泡材2。 最後，只要依據需求，如進一步在該彈性發泡材2之 押出膜層21的表面進行網版印刷或壓花加工，便可以採用 一修邊刀5對該彈性發泡材2進行修邊，再用一切片機6 對修邊後的彈性發泡材2進行裁切，或是直制修邊後的 彈性發泡材2捲收起來即可。 因此，本發明將該第一發泡層22與呈高溫熔融狀之該 押出膜層21疊合後，施予冷滾壓與氣冷處理，使該押出膜 層21與該第一發泡層22迅速地壓合並冷卻成形為該彈性 發泡材2,從而，不但讓本發明製程簡化、製造成本低且生 201235216 ;;s尤其該押出膜層21與該第一發泡層22是溶接 起未使用含有機溶劑的黏著劑，有效減少製程所排 放的有害氣體與廢料，確保製程與產品的安全性，讓製程 人員與產品使用者之身體健康不會受到威脅金 還能降低對環境的衝擊，進而讓本發明兼具健康^全又 環保的特點。 貼入^圖3與圖4所示，本發Μ彈性發騎及其無溶劑 二，的-第二較佳實施例，與上述該第一較佳實施例 5在於，圖3所示該彈性發泡材2還包含一包埋在該 押出=層21中的網布層23，所以’圖4所示該彈性發泡材 的’”、岭劑貼合製程是用來製造成形出上述的彈性發泡材2 產品。 在該彈性發泡材的無溶劑貼合製程的步驟⑼中，必項 另外取該網布層23，而該網布層23可以是㈣纖維絲 醋與棉之混紡纖維製，其作用在於強化該彈性發 彈性與韌度。 接著’在步驟（c)中’是使該網布層23疊合在呈高溫熔 融狀之該押出臈層21的相反另一表面212。 」後在步驟⑷中，將依序疊合之該第一發泡層22、 該押出膜層21與該網布層23送人該冷滾壓設備4中進行 壓合、冷卻，過泡Φ „ Ύ因呈高溫熔融狀態而具流動性之該 押出膜層21，會穿流過該網布層23之網孔，從而將該網布 層3 〇埋在其中’故於對該押出膜層21、該網布層23與 22進行完上述冷滾壓與氣冷處理後，便能製 201235216 作成形出圖3所示的彈性發泡材2產品。 同樣地，本發明m能達到製程簡化 低、生產良率高，且健康、安全又環保等功致。& 貼二與圖6所示，本發明之彈性發泡材及其無溶劑 不门，在於 較佳實施例，與上述該第二較佳實施例 不冋處在於’ Η 5所示該彈性發泡材2還包含一 與該押出膜層21之該表面212熔接右h '、 面 衣囱熔接在—起的第二發泡層An air knife 45 is disposed between the air knife 45 and an A portion of the gas is blown toward the second pressure roller 41. Therefore, the stacked film layer 21 and the first foam layer U are sequentially transferred into the cold rolling device 4, and then sequentially move through the pressing wheel 41 to describe the first cold material 42 and the The third cooling wheel 43, the process towel, the 41 causes the extruded film layer 21 and the first foaming layer 22 to be rolled and joined together, and the sticky layer produced by the extruded film layer 21 which is molten at a high temperature is used. And the surface of the S-bubble layer 22 is softened by the high temperature of the extruded film layer 21, so that the extruded film layer 21 is laminated and integrated.匕 而且 , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , The air-cooling action causes the extruded film layer 21 and the first foaming layer 22 to be rapidly cooled and solidified, thereby forming an elastic foaming material 2 as shown in Fig. 1. Finally, as long as it is required, If the surface of the extruded film layer 21 of the elastic foaming material 2 is further subjected to screen printing or embossing, the elastic foaming material 2 can be trimmed by a trimming knife 5, and a slicer 6 is used. The elastic foam material 2 after trimming is cut, or the elastic foam material 2 after straight trimming is wound up. Therefore, the first foam layer 22 of the present invention is melted at a high temperature. After the extrusion film layer 21 is superposed, cold rolling and air cooling treatment are applied, and the extruded film layer 21 and the first foam layer 22 are rapidly pressed and cooled to form the elastic foam material 2, thereby not only allowing The invention has the advantages of simplified process, low manufacturing cost and raw 201235216; s especially the extruded film layer 21 is melted with the first foamed layer 22 The use of organic solvent-free adhesives can effectively reduce the harmful gases and wastes emitted by the process, ensure the safety of the process and products, and keep the health of the process personnel and users from being threatened. The impact, in turn, makes the invention both healthy and environmentally friendly. Attached to Fig. 3 and Fig. 4, the hairpin elastic hair riding and its solventless two, the second preferred embodiment, and the above The first preferred embodiment 5 is that the elastic foam material 2 shown in FIG. 3 further includes a mesh layer 23 embedded in the extrusion layer 21, so that the elastic foam material shown in FIG. The ridge compounding process is used to manufacture the above-mentioned elastic foaming material 2. In the step (9) of the solventless bonding process of the elastic foaming material, the mesh layer 23 must be additionally taken, and The mesh layer 23 may be made of (4) a blend of fiber vinegar and cotton, which functions to strengthen the elastic elasticity and toughness. Then, in the step (c), the mesh layer 23 is laminated. The high temperature melts the opposite surface 212 of the extruded layer 21. In the step (4), the first foam layer 22, the extruded film layer 21 and the mesh layer 23 which are sequentially laminated are sent to the cold rolling device 4 for pressing and cooling, and the bubble Φ „ Ύ The extruded film layer 21 having a high-temperature molten state and having fluidity flows through the mesh of the mesh layer 23, thereby burying the mesh layer 3 therein, so that the extruded film layer 21 After the mesh layer 23 and the 22 are subjected to the above-described cold rolling and air-cooling treatment, the elastic foam 2 product shown in Fig. 3 can be formed by 201235216. Similarly, the invention can achieve a simplified process and good production. The high rate, health, safety and environmental protection, etc. & 2 and Figure 6, the elastic foam material of the present invention and its solvent-free, in the preferred embodiment, and the second preferred The embodiment is not limited to the fact that the elastic foam material 2 shown in FIG. 5 further includes a second foam layer which is welded to the surface 212 of the extruded film layer 21 and is welded to the surface of the garment.
24’而圖6所示該彈性發泡材的無溶㈣合製程便是用來 製造成形出上述的彈性發泡材2產品。 所以’在該彈性發泡材的無溶劑貼合製程的步驟⑻ 中：還必須另外取該第二發泡層24，該第二發泡層Μ的材 質是如同該第-發泡層22的材f，$ SEBs、iEpE、咖、 EVA，或此等之—組合，而且必要時，該第_發泡層η之 一表面也能已經網版印刷或壓花處理。 而在步驟⑷’是使該網布層23疊合在呈高溫熔融狀之 該押出膜層21之該表面212與該第二發泡層24之間。 然後，在步驟（d)，將依序疊合之該第一發泡層22、該 押出膜層2卜該網布層23與該第二發泡層24送人該冷滚 堡設備4中進行壓合、冷卻，該網布層23會被該押出膜層 21已埋在其中，使知§亥第一發泡層μ熔接該押出膜層21 之表面212，如此便能製作成形出該彈性發泡材2產品。 故同樣地，本發明也能達到製程簡化、製造成本低、 生產良率高，且健康、安全又環保等功效。 另外要說明的是，在上述本發明之該第三較佳實施例 201235216 中，該網布層23可以是非必要的，如此’所製作成形的彈 性發泡材2結構便是由該第一發泡層22、該押出膜層與 該第二發泡層24依序接合而成。 惟以上所述者，僅為本發明之較佳實施例而已，當不 能以此限定本發明實施之範圍，即大凡依本發明申請專利 範圍及發明說明内容所作之簡單的等效變化與修飾，皆仍 屬本發明專利涵蓋之範圍内。 【圖式簡單說明】 圖1是一剖視圖，說明本發明彈性發泡材的一第一較 佳實施例； 圖2疋一製作流程圖，說明本發明 劑貼合製程的一第-較佳實施例； ㈣一 圖3是-剖視圖，說明本發明彈性發泡材的一第二較 佳實施例； 圖4是-製作流程圖，說明本發明彈性發泡材的無溶 劑貼合製程的一第二較佳實施例； 圖5是-剖視圖，說明本發明彈性發泡材的一第三較 佳實施例；以及 圖6疋t作流程圖，說明本發明彈性發泡材的無溶 劑貼合製程的一第三較佳實施例。 201235216 【主要元件符號說明】 1 乾燥筒 4 冷滾壓設備 2 彈性發泡材 41 壓輪 21 押出膜層 42 第一冷卻輪 211 表面 43 第二冷卻輪 212 表面 44 循環式水冷機 22 第一發泡層 45 風刀 23 網布層 5 修邊刀 24 第二發泡層 6 切片機 3 押出設備 11The insoluble (four) process of the elastic foamed material shown in Fig. 6 is used to produce the above-mentioned elastic foamed material 2 product. Therefore, in the step (8) of the solventless bonding process of the elastic foaming material, the second foaming layer 24 must be additionally taken, and the material of the second foaming layer 是 is like the first foaming layer 22 The material f, $ SEBs, iEpE, coffee, EVA, or the like, and if necessary, one of the surfaces of the first foam layer η can also be screen printed or embossed. In the step (4)', the mesh layer 23 is laminated between the surface 212 of the extruded film layer 21 which is molten at a high temperature and the second foamed layer 24. Then, in step (d), the first foam layer 22, the extruded film layer 2, the mesh layer 23 and the second foam layer 24 are sequentially stacked in the cold rolling equipment 4 Pressing and cooling, the mesh layer 23 is buried in the extruded film layer 21, so that the first foam layer μ is welded to the surface 212 of the extruded film layer 21, so that the mesh layer 21 can be formed. Elastic foam 2 products. Therefore, the present invention can also achieve the advantages of simplified process, low manufacturing cost, high production yield, health, safety and environmental protection. It should be noted that, in the third preferred embodiment 201235216 of the present invention, the mesh layer 23 may be unnecessary, so that the structure of the formed elastic foam material 2 is formed by the first hair. The bubble layer 22, the extruded film layer and the second foam layer 24 are sequentially joined. The above is only the preferred embodiment of the present invention, and the scope of the invention is not limited thereto, that is, the simple equivalent changes and modifications made by the scope of the invention and the description of the invention are All remain within the scope of the invention patent. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view showing a first preferred embodiment of the elastic foaming material of the present invention; FIG. 2 is a flow chart showing a first preferred embodiment of the agent bonding process of the present invention. (4) FIG. 3 is a cross-sectional view showing a second preferred embodiment of the elastic foam material of the present invention; and FIG. 4 is a flow chart showing the first step of the solventless bonding process of the elastic foam material of the present invention. 2 is a cross-sectional view showing a third preferred embodiment of the elastic foam material of the present invention; and FIG. 6 is a flow chart showing the solventless bonding process of the elastic foam material of the present invention. A third preferred embodiment of the invention. 201235216 [Explanation of main components] 1 Drying cylinder 4 Cold rolling equipment 2 Elastic foaming material 41 Pressure roller 21 Extrusion film layer 42 First cooling wheel 211 Surface 43 Second cooling wheel 212 Surface 44 Circulating water cooler 22 First hair Bubble layer 45 Air knife 23 Mesh layer 5 Trimming knife 24 Second foam layer 6 Slicer 3 Extrusion device 11