201141675 六、發明說明： 【發明所屬之技術領域】 本發明係有關於一種發泡複合體成型方法，尤指一種 可使發泡原料在迴轉成型模具内順利發泡成中間夾層之封 閉式一次發泡複合體之成型方法。 【先前技術】 按，傳統具發泡夾層之複合體，大都是採用開放爐成 型法，先於外層模具内倒入適當之塑膠粉末，加熱成型出 • 外表層，接著於中層模具内倒入發泡粉末，加熱成型出中 間發泡層，最後於最内層之模具内倒入塑膠粉末，加熱成 型出内表層。該種開放爐成型方法，需使用留有添料口之 開放式模具，製程複雜，加工成本高，並且發泡層於模具 内成型時，易與模具内面產生黏模現象，致使成型後之半 成品無法順利脫模，而造成加工成型時間延長及產品不良 率高。 Φ 是以，後來乃有一種較進步之迴轉成型法，其係將定 量混合比的塑膠粉末及發泡粉末一起加入一封閉之模具内 部，而將模具架設於迴轉成型機上一面加熱一面迴轉，使 塑膠粉末在模具内熔融成桶體外表層與内表層，及使發泡 粉末在模具内發泡成中間夾層，接著將模具移至定點進行 冷卻，待其冷卻後再進行拆模動作取出成品。 惟，該種迴轉成型法，雖可改善開放爐成型法之缺點 ，然其迴轉加熱時，模具内、外側之溫度較中間高，而其 所使用之塑膠及發泡原料均為粉末狀，因而易致使中間發 201141675 泡層無法完全發泡，進而造成所加工成型出之成品產生向 内凹陷之情形，厚度不平均，成品不良率高，外觀品像差 ，並且所能成型的物品型式受限，適用性不佳。 【發明内容】 本發明人有鑑於習知發泡複合體成型方法所加工成型 出之成品，成型度不佳，不良率高，是以乃思及創作的= 念，經多方探討與試作樣品試驗，及多次修正改良後，= 推出本發明。 本發明提供一種封閉式一次發泡複合體之成型方法， 其係於一封閉式模具内置入粉末狀P E表層原料混合顆粒狀 發泡原料，而經由迴轉成型加工，藉由加熱溫度控制，使 較細之粉末狀PE表層原料自然離心貼覆於模具内面，先均 勻熱熔成内、外表層，而較大之顆粒狀發泡原料則流動於 表層原料夾層中，隨後發泡成型與内、外表層結合成一體 ’則即可得到内、外表層完全封閉具發泡夾層之複合體成 品。 本發明之主要目的，在於其係利用較細之粉末狀1^表 層原料混合較大之顆粒狀發泡原料，一同置於封閉式模具 内進行迴轉成型，藉由加熱溫度控制，成型出具發泡夾層 之複合體成品，使中間發泡層完全發泡，俾達成品之成型 度佳，厚度平均，不良率降低，外觀平整，並且所能成型 的物品型式較廣，適用性提昇。 【實施方式】 201141675 ·、 Μ酉己口圖式將本發明較佳實施例詳細說明如后 -闻士:圖本發明添加原料於模具内之剖面示意圖及第 明二二^加原料後封閉模具之剖面示意圖所示，本發 欠發泡複合體之成型方法係取一封閉式模具（1 )之底：(J)式模具⑴之上蓋(⑴打開，於封閉式模具(1 绍#原料内置入較細之粉末狀叩表層原料（2)(或其它 較大之顆粒狀發泡原料（3)混合在一起，再將 SC鎖固形成封閉狀。201141675 VI. Description of the Invention: [Technical Field of the Invention] The present invention relates to a foaming composite molding method, and more particularly to a closed type of hair foam which can smoothly foam a foamed raw material into an intermediate interlayer in a rotary forming mold. A method of forming a foam composite. [Prior Art] According to the traditional composites with foamed interlayers, most of them are opened in the open mold, and the appropriate plastic powder is poured into the outer mold to heat the outer surface layer, and then poured into the middle mold. The powder is foamed, and the intermediate foam layer is heated and formed. Finally, the plastic powder is poured into the mold of the innermost layer, and the inner surface layer is heated and formed. The open furnace forming method requires the use of an open mold with a filling port, the process is complicated, the processing cost is high, and when the foam layer is formed in the mold, the mold is easily formed with the inner surface of the mold, resulting in the semi-finished product after molding. Unable to demould smoothly, resulting in prolonged processing time and high product defect rate. Φ Yes, there is a more advanced rotary forming method, which adds the quantitative mixing ratio of the plastic powder and the foamed powder to the inside of a closed mold, and the mold is erected on the rotary forming machine while heating and rotating. The plastic powder is melted in the mold to form the outer surface layer and the inner surface layer of the barrel, and the foamed powder is foamed into an intermediate interlayer in the mold, and then the mold is moved to a fixed point for cooling, and after being cooled, the mold removal operation is performed to take out the finished product. However, this kind of rotary forming method can improve the shortcomings of the open furnace forming method. However, when the rotary heating is performed, the temperature inside and outside the mold is higher than the middle, and the plastic and foaming raw materials used therein are all powdery. It is easy for the intermediate hair 201141675 foam layer to not completely foam, which causes the finished product to be inwardly recessed, the thickness is uneven, the finished product defect rate is high, the appearance product is poor, and the shape of the formed article is limited. , poor applicability. SUMMARY OF THE INVENTION The present inventors have in view of the conventional molded foam composite molding method, the molded product is not well formed, and the defect rate is high, which is a test of the sample and the sample test by the various ideas and creations. After many corrections and improvements, = the present invention was introduced. The invention provides a method for forming a closed-type primary foaming composite, which is formed by mixing a granular PE foam raw material into a powdered PE surface layer in a closed mold, and is controlled by a rotary forming process by heating temperature control. The fine powdery PE surface material is naturally centrifugally coated on the inner surface of the mold, and is first uniformly heat-melted into the inner and outer surface layers, and the larger granular foaming raw material flows in the surface material interlayer, and then foamed and formed inside and outside. By combining the skin layers into one, it is possible to obtain a finished product in which the inner and outer skin layers are completely closed with a foamed interlayer. The main object of the present invention is to use a relatively fine powdery material to mix a large amount of granular foaming raw materials, and put them together in a closed mold for rotary forming, and to form a foam by heating temperature control. The composite of the sandwich layer completely foams the intermediate foam layer, and the formed product has good forming degree, average thickness, low defect rate, flat appearance, wide variety of articles that can be formed, and improved applicability. [Embodiment] 201141675 ·, Μ酉 口 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图As shown in the cross-sectional schematic view, the molding method of the foam-inducing composite is taken from the bottom of a closed mold (1): (J)-type mold (1) upper cover ((1) is opened, and the closed mold (1 绍# raw material built-in The finer powdery enamel surface material (2) (or other larger granulated foaming material (3) is mixed together, and the SC is locked to form a closed shape.
將該封閉式模具固定於迴轉成型機上，進行 迴轉成型加工，— W 一面進行加熱一面進行迴轉，而於迴轉加 熱過程中，藉ώ 4 土 加熱溫度控制，使較細之粉末狀ΡΕ表層原 料（2)自然離心壯 Α 貼覆於封閉式模具（1)内面’如第三圖所示 先均勻熱熔成內αι + 、外表層（A) ’而較大之顆粒狀發泡原料（ 3 )則 >，丨L動於内、 ^ „ 夕卜表層（A)中’隨後如第四圖所示發泡成 型為夾層（B)歲內 , ^、外表層（A)結合成一體，待冷卻後進行 拆模動作取出，日，丨η 、 則即可得到内、外表層（Α)完全封閉且具 毛/包日（B)之複合體成品，並且該成品無殘留任何穿孔 或添料口之痕跡。 、 上所述之成型法’具有下列效益：其係利用較細之 ?末1^表層原料⑵混合較大之顆粒狀發'泡原料(3) ’ - 同置於封具⑴内進行迴轉成型，藉由粉末與顆粒 大小比重不同，The closed mold is fixed on a rotary forming machine, and is subjected to a rotary forming process, wherein W is rotated while being heated, and in the rotary heating process, the fine powdery surface material is made by the temperature control of the soil. (2) Naturally swelled and sturdy 贴 贴 贴 封闭 封闭 封闭 封闭 封闭 封闭 封闭 封闭 贴 贴 贴 贴 贴 封闭 封闭 封闭 封闭 封闭 封闭 封闭 封闭 封闭 封闭 封闭 封闭 封闭 封闭 封闭 自然 自然 自然 自然 自然 自然 自然 自然 自然 自然 自然 自然 自然) then >, 丨L moves inside, ^ „ 夕 表 surface layer (A) 'then as shown in the fourth figure foam molding into the interlayer (B) within the age, ^, the outer layer (A) combined into one, After cooling, the mold removal operation is taken out, and the day, 丨η, then the finished product of the inner and outer skin layers (Α) is completely closed and the hair/bag day (B) is finished, and the finished product has no residual perforations or additions. The trace of the material. The molding method described above has the following benefits: it is made of finer material, and the surface material (2) is mixed with a larger granular hair foaming material (3) ' - placed in the seal (1) Rotary forming is carried out by the difference in the specific gravity of the powder and the particle size.
、 配合加熱溫度控制，先成型内、外表層（A 為發/包失層（B)，使該發泡夾層（B)完全發泡， 201141675 俾達成品之成型度佳’厚度平均’不良率降低，外觀 ，並且所能成型的物品型式較為廣泛，適用性提昇。 綜上所述，本發明實施例確能達到所預期之使 ，又其所揭露之裝置，不僅未曾見諸於同類產品中 曾公開於申請前，誠已完全符合專利法之規定*要长，Λ 明專利之申請’想請惠予審查，並賜准專利友 唯以上所述者’僅為本發明之較佳實施例而已， 能以之限定本發明實施之範圍；即大凡依本發 ^ ^所作之均特化與修飾1應仍屬本發料利涵2 fe圍内。 κ 【圖式簡單說明】 第一圖：係本發明添加原料於模 第二圖：係本發明添加原料後封 具内之剖面示意圖 閉模具之剖面示意 圖 第三圖：係本發明成型内、外表層之剖面示意圖 第四圖·係本發明成型發泡失層之剖面示音圖。 【主要元件符號說明】 ~ 1 模具 11 12 底座 2 3 發泡原料 A B 夾層 上蓋 表層原料 内、外表層With the heating temperature control, the inner and outer skin layers are first formed (A is the hair/package loss layer (B), so that the foamed interlayer (B) is completely foamed, and the molding degree of the 201141675 俾 product is good. The utility model has the advantages of lowering, appearance, and shape of the articles that can be formed, and the applicability is improved. In summary, the embodiments of the present invention can achieve the expected results, and the device disclosed therein has not been seen in similar products. It has been disclosed before the application, and Cheng has fully complied with the provisions of the Patent Law. * The application for the patent is 'please ask for a review, and the patent applicant is only mentioned above' is only a preferred embodiment of the present invention. However, it is possible to limit the scope of the implementation of the present invention; that is, the specialization and modification 1 of the present invention should still be within the scope of the present invention. κ [Simple description of the diagram] The second aspect of the present invention is a schematic diagram of a cross-sectional view of a closed mold in the sealing material of the present invention. The third drawing is a cross-sectional view of the inner and outer surface layers of the present invention. Invention molding loss The cross-section shown in FIG tone. The main element REFERENCE NUMERALS 1 ~ 11 12 Mold base 23 A B foamed sandwich material cover skin material, the outer skin layer