TW201302418A - Molding press for cushioning material - Google Patents
Molding press for cushioning material Download PDFInfo
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- TW201302418A TW201302418A TW101121642A TW101121642A TW201302418A TW 201302418 A TW201302418 A TW 201302418A TW 101121642 A TW101121642 A TW 101121642A TW 101121642 A TW101121642 A TW 101121642A TW 201302418 A TW201302418 A TW 201302418A
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- cushioning material
- heat
- forming press
- tetrafluoroethylene
- felt layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
- B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
- B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
- B32B27/322—Layered products comprising a layer of synthetic resin comprising polyolefins comprising halogenated polyolefins, e.g. PTFE
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/02—Synthetic macromolecular fibres
- B32B2262/0261—Polyamide fibres
- B32B2262/0269—Aromatic polyamide fibres
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/306—Resistant to heat
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/538—Roughness
Landscapes
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Laminated Bodies (AREA)
- Presses And Accessory Devices Thereof (AREA)
- Press Drives And Press Lines (AREA)
- Reinforced Plastic Materials (AREA)
Abstract
Description
本發明係關於一種緩衝材,其係於製造附銅積層板、可撓性印刷基板、陶瓷積層板等精密設備零件之步驟中使用之成形壓製用緩衝材(以下,有時簡寫為緩衝材),且具有優異之緩衝性。 The present invention relates to a cushioning material which is a cushioning material for forming press used in a step of manufacturing a precision equipment component such as a copper laminate, a flexible printed circuit board or a ceramic laminate (hereinafter sometimes abbreviated as a cushioning material). And has excellent cushioning properties.
具有積層構造之製品(積層製品)例如可夾持於複數之熱盤之間,藉由利用該熱盤之熱壓而製造。 A product (laminated product) having a laminated structure can be sandwiched between a plurality of hot plates, for example, by using hot pressing of the hot plate.
由該方法製造之積層製品之一例如下所述。再者,於積層製品中,除下述所示之例子以外,亦存在各式各樣之製品。 One of the laminates produced by this method is as follows. Further, in the laminated product, in addition to the examples shown below, various products are also available.
(1)成為印刷配線板之基板之積層板 (1) A laminate which becomes a substrate of a printed wiring board
作為該積層板,有包含牛皮紙及酚系樹脂之酚醛紙(paper phenol)積層板、包含玻璃纖維之織布及環氧樹脂之環氧玻璃積層板等。 Examples of the laminate include a paper phenol laminate including kraft paper and a phenol resin, a glass fiber woven fabric, and an epoxy resin laminated glass sheet.
(2)印刷配線板 (2) Printed wiring board
作為該積層板,有於基板之單面形成有導體圖案之單面印刷配線板、於基板之雙面形成有導體圖案之雙面印刷配線板、不僅於基板之外表面而且於內部亦形成有導體圖案之多層印刷配線板等。 The laminated board has a single-sided printed wiring board in which a conductor pattern is formed on one surface of the substrate, and a double-sided printed wiring board in which a conductor pattern is formed on both surfaces of the substrate, and is formed not only on the outer surface of the substrate but also inside. A multilayer printed wiring board of a conductor pattern or the like.
(3)平板顯示器:有液晶顯示器、電致發光顯示器等。 (3) Flat panel display: There are liquid crystal displays, electroluminescent displays, and the like.
(4)半導體封裝:有與晶片大致相同尺寸之晶片尺寸封裝(Chip Size Package,CSP)等。 (4) Semiconductor package: A chip size package (CSP) or the like having substantially the same size as the wafer.
於利用成形壓製裝置製造該等各種積層製品(被成形體)之步驟中,在熱盤與積層製品之間介隔緩衝材。該緩衝材具有緩衝性以使得熱盤與積層製品不直接抵接,並且發揮將由熱盤產生之熱均勻地傳導至積層製品整面之功能。 In the step of producing the various laminated products (molded bodies) by the forming press, a cushioning material is interposed between the hot plate and the laminated product. The cushioning material has a cushioning property so that the hot plate does not directly abut against the laminated product, and functions to uniformly conduct heat generated by the hot plate to the entire surface of the laminated product.
基於圖1而對該緩衝材之具體之使用例進行說明。 A specific use example of the cushioning material will be described based on Fig. 1 .
圖1係表示雙面印刷配線印刷板之製造裝置中的積層板之成形壓製之一例之截面圖。於圖1所示之成形壓製裝置中,使用對向配置之一對熱盤40、較一對熱盤40靠更靠內側地配置之一對緩衝材C、較一對緩衝材C更靠內側地配置之一對鏡面板50、銅箔60及預浸料70。 Fig. 1 is a cross-sectional view showing an example of forming press of a laminated board in a manufacturing apparatus of a double-sided printed wiring printed board. In the forming press apparatus shown in Fig. 1, one of the opposing pairs of the hot plate 40 and the pair of hot plates 40 is disposed on the inner side of the pair of cushioning members C and the pair of cushioning members C. One of the mirror panels 50, the copper foil 60, and the prepreg 70 are disposed.
最終,藉由預浸料70及銅箔60而形成雙面印刷配線板(積層製品)。預浸料70係藉由將複數片於玻璃布中含浸環氧樹脂且成為半固化狀態之板材重疊而構成。 Finally, a double-sided printed wiring board (laminated product) is formed by the prepreg 70 and the copper foil 60. The prepreg 70 is formed by laminating a plurality of sheets which are impregnated with epoxy resin in a glass cloth and which are semi-cured.
於成形壓製裝置中,利用熱盤40、40施加熱及壓力而進行成形,但此時之成形條件根據環氧樹脂原料之調配等而不同。又,若成形步驟中所使用之緩衝材之熱轉移量(升溫速度:℃/分鐘)不符合製造條件,則有於積層製品中產生物性差之虞。又,為了製造均勻之積層製品,必需施加一定之壓力及熱,但對積層板施加之熱及壓力必需於緩衝材之整面均勻。圖1係利用此種構成使平板之緩衝材C介於熱盤40與預浸料70之間而進行熱壓。但是,若反覆進行上述熱壓,則與熱盤40及/或鏡面板50抵接之緩衝材表面變得過於平滑,可見緩衝材C貼附於熱盤40及/或鏡面板50上之現象。 In the molding press apparatus, heat is applied by applying heat and pressure to the hot plates 40 and 40. However, the molding conditions at this time differ depending on the blending of the epoxy resin raw materials and the like. Moreover, if the heat transfer amount (temperature rising rate: ° C/min) of the cushioning material used in the forming step does not satisfy the manufacturing conditions, the physical properties of the laminated product may be poor. Moreover, in order to manufacture a uniform laminated product, it is necessary to apply a certain pressure and heat, but the heat and pressure applied to the laminated board must be uniform over the entire surface of the cushioning material. In the configuration of Fig. 1, the cushioning material C of the flat plate is placed between the hot plate 40 and the prepreg 70 to be hot pressed. However, when the above-described hot pressing is repeated, the surface of the cushioning material that abuts against the hot plate 40 and/or the mirror panel 50 becomes too smooth, and the phenomenon that the cushioning material C is attached to the hot plate 40 and/or the mirror panel 50 can be seen. .
尤其是,於緩衝材為針織(needle punch)型之情形時,緩衝材表面之凹凸(針織之針孔之凹凸)由於緩衝材之反覆使用而導致纖維之纏繞鬆弛,因此緩衝材表面之粗糙度減少而變得平滑,故而可見緩衝材貼附於熱盤40及/或鏡面板50上之現象。 In particular, when the cushioning material is in the case of a needle punch type, the unevenness of the surface of the cushioning material (the unevenness of the needle hole of the knitting) is loosened by the use of the cushioning material, and the surface of the cushioning material is roughened. Since it is reduced and smoothed, the phenomenon that the cushioning material is attached to the hot plate 40 and/or the mirror panel 50 can be seen.
即,反覆熱壓次數(成形壓製之次數)越增多,則緩衝材表面變得越平滑,因此貼附現象進而增多。若緩衝材C貼附於熱盤40及/或鏡面板50上,則會阻礙其後之積層製品之製造,因此必需更換緩衝材C。 That is, as the number of times of repeated hot pressing (the number of times of forming press) increases, the surface of the cushioning material becomes smoother, so that the sticking phenomenon is further increased. If the cushioning material C is attached to the hot plate 40 and/or the mirror panel 50, the subsequent manufacture of the laminated product is hindered, and it is necessary to replace the cushioning material C.
然而,現在市售之緩衝材係使用橡膠、氈狀製品(不織布等)、橡膠與毛氈之積層體等各種各樣者。雖然近來致力於製造均勻之積層製品,但要求有可避免緩衝材貼附於熱盤及/或鏡面板上之現象的緩衝材。 However, commercially available cushioning materials are various types such as rubber, felt-like products (non-woven fabrics, etc.), laminated bodies of rubber and felt, and the like. Although recent efforts have been made to produce a uniform laminated product, a cushioning material that avoids the phenomenon that the cushioning material is attached to the hot plate and/or the mirror panel is required.
先前以來,作為成形壓製用緩衝材,於專利文獻1中記載有使用上述之利用針織使其一體化之氈狀不織布而提高緩衝性及熱傳遞性之緩衝材。 In the prior art, as a cushioning material for forming press, Patent Document 1 discloses a cushioning material which improves the cushioning property and heat transfer property by using the felt-like nonwoven fabric which is integrated by knitting as described above.
例如,作為此種緩衝材,有圖2所示者。於圖2中,緩衝材C4包括積層有基體11B、及2層針織於基體11B之表裏面之化纖短纖維(staple fiber)之毛氈材11A者。 For example, as such a cushioning material, there is shown in FIG. In Fig. 2, the cushioning material C4 includes a base material 11B and two layers of felt fibers 11A knitted with staple fibers in the surface of the base 11B.
此處,化纖短纖維係由間位芳香族聚醯胺及聚吲哚纖維構成。又,基體11B係使用由包含耐熱性纖維之經紗11B1及緯紗11B2所形成之織布。若使用該緩衝材,則即便於印刷電路基板上有少量凹凸,亦可使其於一定程度上均勻化而施加壓力。但是,若連續使用該緩衝材,則與熱盤及/ 或鏡面板抵接之緩衝材表面之凹凸形狀(由針織產生之針孔之凹凸)變得平滑,因此可見緩衝材貼附於熱盤及/或鏡面板上之現象。 Here, the chemical fiber short fibers are composed of meta-aromatic polyamines and polyfluorene fibers. Further, the base 11B is a woven fabric formed of a warp yarn 11B1 and a weft yarn 11B2 containing heat resistant fibers. When the cushioning material is used, even if there is a small amount of irregularities on the printed circuit board, it can be made uniform to a certain extent and pressure is applied. However, if the cushioning material is used continuously, it is combined with the hot plate and / Or the uneven shape of the surface of the cushioning material against which the mirror panel abuts (the unevenness of the pinhole generated by knitting) becomes smooth, so that the phenomenon that the cushioning material is attached to the hot plate and/or the mirror panel can be seen.
又,作為先前之成形壓製用緩衝材,於專利文獻2中記載有如下緩衝材,其係包含耐熱性橡膠者,且使用含浸有耐熱性樹脂之玻璃布作為芯材,使鋁板貼合於表面層之緩衝材上。該緩衝材係於可撓性印刷基板之製造步驟中,在使以聚醯亞胺系膜為基材之覆蓋膜壓接與可撓性基板上時,可應對由配線部之凹凸所引起的空隙之產生,但即便使用該緩衝材,與熱盤及/或鏡面板抵接之緩衝材表面(以聚醯亞胺系膜為基材之覆蓋膜)的凹凸表面亦隨著緩衝材之連續使用而變得平滑,因此可見緩衝材C貼附於熱盤及/或鏡面板上之現象。 In the prior art, the cushioning material for forming press is described in Patent Document 2, which includes a heat-resistant rubber and a glass cloth impregnated with a heat-resistant resin as a core material to bond the aluminum sheet to the surface. Layer of cushioning material. In the manufacturing process of the flexible printed circuit board, when the cover film having the polyimide film as the base material is pressure-bonded to the flexible substrate, the buffer material can be caused by the unevenness of the wiring portion. The void is generated, but even if the cushioning material is used, the surface of the cushioning material (the cover film made of the polyimide film) which abuts on the hot plate and/or the mirror plate is continuous with the cushioning material. It is smoothed by use, so that the phenomenon that the cushioning material C is attached to the hot plate and/or the mirror panel can be seen.
[專利文獻1]日本專利特開2003-145567號公報 [Patent Document 1] Japanese Patent Laid-Open Publication No. 2003-145567
[專利文獻2]日本專利特開平8-148814號公報 [Patent Document 2] Japanese Patent Laid-Open No. Hei 8-148814
本發明係鑒於上述缺點而提供一種成形壓製用緩衝材,其作為成形壓製用緩衝材而具有優異之緩衝性,並且對積層板施加之熱及壓力於緩衝材之整面均勻,與熱盤抵接之緩衝材表面不會變得過於平滑,因此緩衝材不貼附於熱盤及/或鏡面板上。 In view of the above disadvantages, the present invention provides a cushioning material for forming press which has excellent cushioning properties as a cushioning material for forming press, and heat and pressure applied to the laminated sheet are uniform over the entire surface of the cushioning material, and are in contact with the hot plate. The surface of the cushioning material does not become too smooth, so the cushioning material is not attached to the hot plate and/or the mirror panel.
本發明人解決了上述問題,提供下述具有優異之緩衝性且將熱均勻地傳導至整面之成形壓製用緩衝材。 The present inventors have solved the above problems and have provided a cushioning material for forming press which has excellent cushioning properties and conducts heat uniformly to the entire surface.
(1)一種成形壓製用緩衝材,其特徵在於:其係具有至少1層以上之毛氈層者,且於上述毛氈層之兩外周面上配置耐熱布,進而在上述耐熱布之兩外周面上配置四氟乙烯系膜作為表層材。 (1) A cushioning material for forming presses, characterized in that it has at least one layer of felt layers, and a heat-resistant cloth is disposed on both outer peripheral surfaces of the felt layer, and further on both outer peripheral surfaces of the heat-resistant cloth A tetrafluoroethylene film is disposed as a surface layer.
(2)如上述(1)之成形壓製用緩衝材,其中於上述毛氈層與耐熱布之間配置有四氟乙烯系膜。 (2) The cushioning material for forming press according to the above (1), wherein a tetrafluoroethylene film is disposed between the felt layer and the heat-resistant cloth.
(3)如上述(1)至(2)中任一項之成形壓製用緩衝材,其中上述毛氈層為使用對位芳香族聚醯胺之化纖短纖維或間位芳香族聚醯胺之化纖短纖維中之任一種、或者該等混合而成之化纖短纖維之毛氈層。 (3) The cushioning material for forming press according to any one of the above (1) to (2), wherein the felt layer is a chemical fiber of a chemical fiber short fiber or a meta-aromatic polyamine which uses a para-aromatic polyamine. Any one of short fibers or a felt layer of such a mixture of chemical fiber short fibers.
(4)如上述(1)至(3)中任一項之成形壓製用緩衝材,其中上述耐熱布為選自玻璃纖維、二氧化矽纖維、氧化鋁纖維、陶瓷纖維中之纖維之織布(布)。 (4) The cushioning material for forming press according to any one of (1) to (3), wherein the heat-resistant cloth is a woven fabric of fibers selected from the group consisting of glass fibers, cerium oxide fibers, alumina fibers, and ceramic fibers. (cloth).
(5)如上述(4)之成形壓製用緩衝材,其中上述耐熱布具有100 μm以上300 μm以下之厚度,並且質量為100 g/m2~300 g/m2之範圍。 (5) The cushioning material for forming press according to the above (4), wherein the heat-resistant cloth has a thickness of 100 μm or more and 300 μm or less and a mass of 100 g/m 2 to 300 g/m 2 .
(6)如上述(4)之成形壓製用緩衝材,其中上述耐熱布具有150 μm以上250 μm以下之厚度,並且質量為150 g/m2~250 g/m2之範圍。 (6) The cushioning material for forming press according to the above (4), wherein the heat-resistant cloth has a thickness of 150 μm or more and 250 μm or less and a mass of 150 g/m 2 to 250 g/m 2 .
(7)如上述(1)至(6)中任一項之成形壓製用緩衝材,其中上述四氟乙烯系膜為選自四氟乙烯-乙烯共聚物(ETFE)、四 氟乙烯-全氟烷基乙烯醚共聚物(PFA)、四氟乙烯-六氟丙烯共聚物(FEP)、聚四氟乙烯(PTFE)中之膜。 (7) The cushioning material for forming press according to any one of the above (1), wherein the tetrafluoroethylene film is selected from the group consisting of tetrafluoroethylene-ethylene copolymer (ETFE), and four A film of a vinyl fluoride-perfluoroalkyl vinyl ether copolymer (PFA), a tetrafluoroethylene-hexafluoropropylene copolymer (FEP), or a polytetrafluoroethylene (PTFE).
(8)如上述(1)至(7)中任一項之成形壓製用緩衝材,其中成形壓製用緩衝材之表面粗糙度(Ra)為3 μm以上30 μm以下。 (8) The cushioning material for forming press according to any one of the above (1), wherein the cushioning material for forming press has a surface roughness (Ra) of 3 μm or more and 30 μm or less.
此處,所謂至少1層以上之毛氈層,係指包含1層或2層以上之利用纖度1.0~10.0 dtex、較佳為纖度1.0~6.0 dtex之耐熱性化纖短纖維,以藉由針織之纖維間之纏繞形成的毛氈層者。 Here, the term "at least one or more layers of the felt layer" means one or two or more layers of heat-resistant chemical fiber short fibers having a fineness of 1.0 to 10.0 dtex, preferably a fineness of 1.0 to 6.0 dtex, to be knitted by the fibers. The felt layer formed by the entanglement between the two.
上述毛氈層亦可包含成為基體之織布或格子狀原材料。較佳為利用對包含耐熱纖維之經紗及緯紗進行織製而成之織布構成。紗原材料除採用間位芳香族聚醯胺、對位芳香族聚醯胺以外,亦可適當採用全芳香族聚酯纖維、聚對亞苯基苯并二噁唑(PBO,poly-p-phenylenebenzobisoxazole)纖維、不鏽鋼纖維等。 The felt layer may also comprise a woven or lattice-like material that becomes a matrix. It is preferably composed of a woven fabric obtained by weaving warp yarns and weft yarns containing heat-resistant fibers. In addition to the meta-aromatic polyamine and the para-aromatic polyamine, the yarn raw material may also be a wholly aromatic polyester fiber or poly-p-phenylenebenzobisoxazole (PBO, poly-p-phenylenebenzobisoxazole). ) Fiber, stainless steel fiber, etc.
又,關於基體,就強度方面而言較理想為如上述般對經紗及緯紗進行織製而成之織布,但除該織布以外,亦可適當採用僅使經紗及緯紗重合而成之構成等。 In addition, the base material is preferably a woven fabric obtained by weaving warp yarns and weft yarns as described above. However, in addition to the woven fabric, a composition in which only warp yarns and weft yarns are superposed can be suitably used. Wait.
於本發明中,上述毛氈層與耐熱布之間的接合通常可使用藉由耐熱性樹脂之接合(黏接),但可配置四氟乙烯系膜作為耐熱性樹脂而進行接合。於此情形時,四氟乙烯系膜之配置發揮上述毛氈層與耐熱布之間的接合材之作用。 In the present invention, the joining between the felt layer and the heat-resistant cloth can be usually performed by bonding (bonding) with a heat-resistant resin, but a tetrafluoroethylene film can be disposed as a heat-resistant resin. In this case, the arrangement of the tetrafluoroethylene film functions as a bonding material between the felt layer and the heat-resistant cloth.
上述化纖短纖維(短纖維)係包含作為耐熱性化纖短纖維的對位芳香族聚醯胺之化纖短纖維及/或間位芳香族聚醯 胺之化纖短纖維者,關於使耐熱性化纖短纖維與其他化纖短纖維混棉而成者,係包含至少50重量%以上之耐熱性化纖短纖維之概念。 The chemical fiber short fiber (short fiber) is a chemical fiber short fiber and/or a meta-aromatic polyfluorene which is a para-aromatic polyamine which is a heat-resistant chemical fiber short fiber. In the case of the chemical fiber short fiber of the amine, the heat-resistant chemical fiber short fiber is blended with other chemical fiber short fibers, and the concept includes at least 50% by weight or more of the heat-resistant chemical fiber short fiber.
作為耐熱性化纖短纖維之具體例,分別使用對位芳香族聚醯胺(Kevlar;商品名/Dupont製造,Twaron;商品名/帝人製造)之化纖短纖維、及/或間位芳香族聚醯胺(Twaron;商品名/帝人製造,Nomex;商品名/Dupont製造)之化纖短纖維,或者可較佳地使用將各種化纖短纖維各以一定量混合而成之化纖短纖維。 Specific examples of the heat-resistant chemical fiber short fibers include chemical fiber staple fibers of a para-aramid (Kevlar; trade name, manufactured by Dupont, Twaron; trade name / manufactured by Teijin), and/or meta-aromatic polyfluorene. A chemical fiber short fiber of an amine (Twaron; trade name, manufactured by Teijin, Nomex; trade name / manufactured by Dupont), or a staple fiber obtained by mixing various chemical fiber short fibers in a certain amount can be preferably used.
上述耐熱布係利用耐熱性及強度優異且化學性穩定之玻璃長纖維等織成之織布(例如玻璃布),可使用斜紋織或平紋織之組織。作為纖維材料,可使用選自玻璃纖維、二氧化矽纖維、氧化鋁纖維、陶瓷纖維中之纖維。於本發明中,更佳為使用玻璃布。 The heat-resistant fabric is a woven fabric (for example, a glass cloth) woven from glass long fibers having excellent heat resistance and strength and chemically stable, and a twill weave or a plain weave can be used. As the fiber material, fibers selected from glass fibers, cerium oxide fibers, alumina fibers, and ceramic fibers can be used. In the present invention, it is more preferred to use a glass cloth.
又,上述耐熱布可使用厚度為100 μm以上300 μm以下之範圍且質量為100 g/m2~300 g/m2之範圍者。更佳為上述耐熱布為具有150 μm以上250 μm以下之厚度且質量為150 g/m2~250 g/m2之範圍者。 Further, the heat-resistant cloth may have a thickness in the range of 100 μm or more and 300 μm or less and a mass of 100 g/m 2 to 300 g/m 2 . More preferably, the heat-resistant cloth has a thickness of 150 μm or more and 250 μm or less and a mass of 150 g/m 2 to 250 g/m 2 .
就防止與熱盤抵接之緩衝材表面變得過於平滑而使緩衝材貼附於熱盤及/或鏡面板上之方面而言,厚度為100 μm以上且質量為100 g/m2以上之耐熱布較為有利。又,就使對積層板施加之熱及壓力於緩衝材之整面均勻之方面而言,厚度為300 μm以下且質量為300 g/m2以下之耐熱布較為有利。 The thickness of the cushioning material against the hot plate is too smooth to be attached to the hot plate and/or the mirror plate, and the thickness is 100 μm or more and the mass is 100 g/m 2 or more. Heat resistant cloth is more advantageous. Further, in terms of uniformity of heat and pressure applied to the laminated sheet to the entire surface of the cushioning material, a heat-resistant cloth having a thickness of 300 μm or less and a mass of 300 g/m 2 or less is advantageous.
上述四氟乙烯系膜係選自四氟乙烯-乙烯共聚物(ETFE)、四氟乙烯-全氟烷基乙烯醚共聚物(PFA)、四氟乙烯-六氟丙烯共聚物(FEP)、聚四氟乙烯(PTFE)中之膜,較佳為使用膜厚為20 μm~100 μm者。就防止於緩衝材表面出現較大之耐熱布之凹凸,並使對積層板施加之熱及壓力在緩衝材之整面均勻之方面而言,較佳為將膜厚設為20 μm以上。又,就防止與熱盤抵接之緩衝材表面變得過於平滑,且防止緩衝材貼附於熱盤及/或鏡面板上之方面而言,較佳為將膜厚設為100 μm以下。 The tetrafluoroethylene film is selected from the group consisting of tetrafluoroethylene-ethylene copolymer (ETFE), tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer (PFA), tetrafluoroethylene-hexafluoropropylene copolymer (FEP), and poly The film of tetrafluoroethylene (PTFE) is preferably one having a film thickness of 20 μm to 100 μm. It is preferable to set the film thickness to 20 μm or more in terms of preventing the unevenness of the heat-resistant cloth from being large on the surface of the cushioning material and making the heat and pressure applied to the laminated plate uniform over the entire surface of the cushioning material. Further, it is preferable to prevent the surface of the cushioning material that abuts against the hot plate from being excessively smooth, and to prevent the cushioning material from being attached to the hot plate and/or the mirror panel, the film thickness is preferably 100 μm or less.
若以單面側之鋪層(lay up)對本發明之緩衝材之構成進行說明,則為毛氈層/耐熱布(例如玻璃布)/四氟乙烯系膜(表層材)之構成,因此毛氈層具有對於由熱盤產生之溫度及壓力的緩衝性,為了防止對熱盤及/或鏡面板之貼附,耐熱布(例如玻璃布)之表面凹凸(織布面之凹凸)於作為表層材之四氟乙烯系膜之表面出現,因此上述構成較為有用。 When the constitution of the cushioning material of the present invention is explained by a layup on one side, it is a structure of a felt layer/heat-resistant cloth (for example, glass cloth)/tetrafluoroethylene film (surface material), and thus the felt layer It has a cushioning property for the temperature and pressure generated by the hot plate, and in order to prevent adhesion to the hot plate and/or the mirror panel, the surface unevenness of the heat-resistant cloth (for example, glass cloth) (the unevenness of the woven surface) is used as the surface layer. The above structure is useful because the surface of the tetrafluoroethylene film appears.
於本發明中,作為更佳之構成,若以單面側之鋪層進行說明,則如毛氈層/四氟乙烯系膜/耐熱布(例如玻璃布)/四氟乙烯系膜(表層材)之構成般,可於毛氈層與耐熱布(例如玻璃布)之間配置四氟乙烯系膜作為接合材。即,該構成之特徵在於:於毛氈層之兩外周面上介隔四氟乙烯系膜而配置耐熱布(例如玻璃布),進而在該耐熱布之兩外周面上配置四氟乙烯系膜作為表層材。毛氈層與耐熱布(例如玻璃布)介隔四氟乙烯系膜而接合。又,於耐熱布(例如玻璃 布)之外周面上亦接合四氟乙烯系膜並作為緩衝材之表層材而配置。 In the present invention, as a more preferable configuration, a laminate layer such as a felt layer/tetrafluoroethylene film/heat-resistant cloth (for example, glass cloth)/tetrafluoroethylene film (surface material) will be described. In the same manner, a tetrafluoroethylene film can be disposed between the felt layer and the heat-resistant cloth (for example, a glass cloth) as a bonding material. In other words, the structure is characterized in that a tetrafluoroethylene film is interposed on both outer peripheral surfaces of the felt layer to arrange a heat-resistant cloth (for example, a glass cloth), and a tetrafluoroethylene film is disposed on both outer peripheral surfaces of the heat-resistant cloth. Surface layer. The felt layer is bonded to a heat-resistant cloth (for example, a glass cloth) via a tetrafluoroethylene film. Also, in a heat-resistant cloth (such as glass) The outer peripheral surface of the cloth was also bonded to a tetrafluoroethylene film and disposed as a surface layer of a cushioning material.
藉由使用本發明之緩衝材,於對積層製品(被成形體)反覆進行熱壓成形時,對積層板施加之熱及壓力在緩衝材之整面均勻,與熱盤或鏡面板抵接之緩衝材表面不會變得過於平滑,因此緩衝材不貼附於熱盤及/或鏡面板上。 When the laminated product (molded body) is subjected to hot press forming by using the cushioning material of the present invention, the heat and pressure applied to the laminated sheet are uniform over the entire surface of the cushioning material, and abutting against the hot plate or the mirror plate The surface of the cushioning material does not become too smooth, so the cushioning material is not attached to the hot plate and/or the mirror panel.
本發明之緩衝材係於成形壓製裝置中反覆使用時,緩衝材之兩外周面(表裏面)之粗糙度(Ra)較佳為3 μm~30 μm。 若將粗糙度(Ra)設為3 μm以上,則就防止緩衝材表面變得過於平滑而貼附於熱盤或鏡面板上之方面而言較佳。又,若將粗糙度(Ra)設為30 μm以下,則就使對積層板施加之熱及壓力於緩衝材之整面均勻之方面而言較佳。 When the cushioning material of the present invention is used repeatedly in a forming press apparatus, the roughness (Ra) of the outer peripheral surfaces (inside) of the cushioning material is preferably from 3 μm to 30 μm. When the roughness (Ra) is 3 μm or more, it is preferable to prevent the surface of the cushioning material from becoming too smooth and attached to the hot plate or the mirror panel. Moreover, when the roughness (Ra) is 30 μm or less, the heat and pressure applied to the laminate are preferably uniform in the entire surface of the cushioning material.
本發明之基本構成係一種成形壓製用緩衝材,其特徵在於:其係具有至少1層以上之毛氈層者,且於上述毛氈層之兩外周面上配置耐熱布,進而在該耐熱布之兩外周面上配置四氟乙烯系膜作為表層材。 The basic structure of the present invention is a cushioning material for forming presses, characterized in that it has at least one layer of felt layers, and a heat-resistant cloth is disposed on both outer peripheral surfaces of the felt layer, and further, two heat-resistant cloths are provided. A tetrafluoroethylene film is disposed on the outer peripheral surface as a surface layer.
此處,基於圖3對本發明之實施方式進行說明。 Here, an embodiment of the present invention will be described based on Fig. 3 .
於圖3中,10為本發明之緩衝材,其係配置有基體10B,於基體10B之熱盤側面1E配置有第1毛氈層1A,在其相反側配置有第2毛氈層1B,於第1毛氈層1A之外周面配置有第1耐熱布(例如玻璃布)1C,在第2毛氈層1B之外周面配置有第2耐熱布(例如玻璃布)1D。第1毛氈層1A與第1耐熱布 (例如玻璃布)1C之接合及第2毛氈層1B與第2耐熱布(例如玻璃布)1D之接合可使用藉由耐熱性樹脂之接合(黏接)。 In Fig. 3, reference numeral 10 denotes a cushioning material of the present invention, in which a base 10B is disposed, a first felt layer 1A is disposed on a hot plate side surface 1E of the base 10B, and a second felt layer 1B is disposed on the opposite side thereof. A first heat-resistant cloth (for example, glass cloth) 1C is disposed on the outer peripheral surface of the felt layer 1A, and a second heat-resistant cloth (for example, glass cloth) 1D is disposed on the outer peripheral surface of the second felt layer 1B. The first felt layer 1A and the first heat-resistant cloth (For example, glass cloth) 1C bonding and joining of the second felt layer 1B and the second heat-resistant cloth (for example, glass cloth) 1D can be joined (bonded) by a heat resistant resin.
並且,第1耐熱布(例如玻璃布)1C與第2耐熱布(例如玻璃布)1D係於其外周面分別配置有四氟乙烯系膜P1及P2作為表層材。 In addition, the first heat-resistant cloth (for example, glass cloth) 1C and the second heat-resistant cloth (for example, glass cloth) 1D are provided with a tetrafluoroethylene film P1 and P2 as the surface layer, respectively, on the outer peripheral surface thereof.
此種緩衝材10係由與熱盤抵接之緩衝材表面1E及與鏡面板抵接之緩衝材表面2E構成。 The cushioning material 10 is composed of a cushioning material surface 1E that abuts against the hot plate and a cushioning material surface 2E that abuts against the mirror panel.
另外,圖3中之緩衝材10係第1毛氈層1A及第2毛氈層1B與基體10B接合。於圖3之本發明中,將耐熱性之化纖短纖維之短纖維針織於基體10B之外周面而使第1毛氈層1A及第2毛氈層1B分別與基體10B接合。然而,可不使用基體10B而使用1層或多層預先針織耐熱性化纖短纖維之短纖維而成之毛氈層。 In addition, the cushioning material 10 in FIG. 3 is joined to the base 10B by the first felt layer 1A and the second felt layer 1B. In the invention of Fig. 3, the short fibers of the heat-resistant short staple fibers are knitted on the outer peripheral surface of the base 10B, and the first felt layer 1A and the second felt layer 1B are joined to the base 10B, respectively. However, it is possible to use a felt layer in which one or more layers of short fibers of the heat-resistant chemical fiber short fibers are knitted in advance without using the base 10B.
另一方面,於圖3中,第1耐熱布(例如玻璃布)1C及第2耐熱布(例如玻璃布)1D之兩外周面雖然成為配置有四氟乙烯系膜P1及P2之構成,但四氟乙烯系膜可藉由於其熔融溫度以上進行熱壓製而與第1耐熱布(例如玻璃布)1C及第2耐熱布(例如玻璃布)1D之兩外周面接合。 On the other hand, in FIG. 3, the outer peripheral surfaces of the first heat-resistant cloth (for example, glass cloth) 1C and the second heat-resistant cloth (for example, glass cloth) 1D are configured such that the tetrafluoroethylene film P1 and P2 are disposed, but The tetrafluoroethylene film can be joined to the outer peripheral surfaces of the first heat-resistant cloth (for example, glass cloth) 1C and the second heat-resistant cloth (for example, glass cloth) 1D by hot pressing at a melting temperature or higher.
又,基於圖4對本發明之其他實施方式進行說明。 Further, another embodiment of the present invention will be described based on Fig. 4 .
於圖4中,20為本發明之緩衝材,其係配置有基體10B,於基體10B之熱盤側面1E配置有第1毛氈層21A,在其相反側配置有第2毛氈層21B,於第1毛氈層21A之外周面介隔四氟乙烯系膜P3而配置有第1耐熱布(例如玻璃布)21C,在第2毛氈層21B之外周面介隔四氟乙烯系膜P4而配置有第2 耐熱布(例如玻璃布)21D。 In Fig. 4, reference numeral 20 denotes a cushioning material of the present invention, in which a base 10B is disposed, a first felt layer 21A is disposed on a hot plate side surface 1E of the base 10B, and a second felt layer 21B is disposed on the opposite side thereof. In the outer peripheral surface of the felt layer 21A, the first heat-resistant cloth (for example, glass cloth) 21C is disposed via the tetrafluoroethylene film P3, and the outer surface of the second felt layer 21B is interposed with the tetrafluoroethylene film P4. 2 Heat-resistant cloth (for example, glass cloth) 21D.
並且,第1耐熱布(例如玻璃布)21C及第2耐熱布(例如玻璃布)21D係於其外周面分別配置有四氟乙烯系膜P1及P2作為表層材。 In the first heat-resistant cloth (for example, glass cloth) 21C and the second heat-resistant cloth (for example, glass cloth) 21D, tetrafluoroethylene-based films P1 and P2 are disposed on the outer peripheral surface thereof as a surface layer.
此種緩衝材20係由與熱盤抵接之緩衝材表面1E及與鏡面板抵接之緩衝材表面2E構成。 The cushioning material 20 is composed of a cushioning material surface 1E that abuts on the hot plate and a cushioning material surface 2E that abuts against the mirror panel.
另外,圖4中之緩衝材20係第1毛氈層21A及第2毛氈層21B與基體10B接合。於圖4之本發明中,將耐熱性之化纖短纖維之短纖維針織於基體10B之外周面而使第1毛氈層21A及第2毛氈層21B分別與基體10B接合。然而,可不使用基體10B而使用1層或多層預先針織耐熱性化纖短纖維之短纖維而成之毛氈層。 Further, the cushioning material 20 in Fig. 4 is joined to the base 10B by the first felt layer 21A and the second felt layer 21B. In the invention of Fig. 4, the short fibers of the heat-resistant short staple fibers are knitted on the outer peripheral surface of the base 10B, and the first felt layer 21A and the second felt layer 21B are joined to the base 10B, respectively. However, it is possible to use a felt layer in which one or more layers of short fibers of the heat-resistant chemical fiber short fibers are knitted in advance without using the base 10B.
另一方面,於圖4中,第1毛氈層21A和第2毛氈層21B之兩外周面係成為配置有四氟乙烯系膜P3及P4之構成。 On the other hand, in FIG. 4, the outer peripheral surfaces of the first felt layer 21A and the second felt layer 21B are configured such that the tetrafluoroethylene films P3 and P4 are disposed.
四氟乙烯系膜可藉由於其熔融溫度以上進行熱壓製而與第1毛氈層21A及第2毛氈層21B之兩外周面接合。 The tetrafluoroethylene film can be joined to the outer peripheral surfaces of the first felt layer 21A and the second felt layer 21B by hot pressing at a temperature higher than the melting temperature.
或者,亦可預先將2片四氟乙烯系膜熱壓製於耐熱布(例如玻璃布)之兩外周面上而使其接合後,使上述玻璃布與毛氈層之外周面接合。 Alternatively, two sheets of the tetrafluoroethylene film may be previously press-bonded to the outer peripheral surfaces of the heat-resistant cloth (for example, glass cloth) to bond the glass cloth to the outer peripheral surface of the felt layer.
以下,利用實施例對本發明之成形壓製用緩衝材進行更詳細地說明,但該等實施例對本發明無任何限定。 Hereinafter, the cushioning material for forming press of the present invention will be described in more detail by way of examples, but the examples are not intended to limit the invention.
首先,於實施例及比較例中,以下構成均使用通用者。 First, in the examples and comparative examples, the following configurations were used in common.
‧使用以間位芳香族聚醯胺之細紗[包含6 dtex(分特)之50 mm切斷長度之短纖維之細紗]進行織製而成之織布。再者,作為具體之纖維,係使用Twaron(商品名/帝人製造)。 織布之質量為200 g/m2。 ‧Weaving a woven fabric of spun yarn of a meta-aromatic polyamide (containing a spun yarn of 50 mm cut length of 6 dtex). Further, as a specific fiber, Twaron (trade name / manufactured by Teijin) was used. The quality of the weaving is 200 g/m 2 .
‧毛氈層之製作;於上述織布之兩外周面(表裏)上,使用作為對位芳香族聚醯胺之Kevlar(商品名/Dupont製造)之化纖短纖維,即2 dtex(分特)之50 mm切斷長度之短纖維,利用每1棱為6鉤刺(barb)之針,將針織次數設為50次/cm2,而設置毛氈層。因此,根據織布之質量200 g/m2、表面側毛氈質量250 g/m2及裏面側毛氈質量250 g/m2而成為合計質量700 g/m2之毛氈層。 ‧The production of the felt layer; on the outer peripheral surface (the surface) of the above-mentioned woven fabric, the chemical fiber short fiber of Kevlar (trade name / manufactured by Dupont), which is a para-aramid, is used, that is, 2 dtex (dtex) A short fiber of 50 mm cut length was provided with a felt layer by using a needle of 6 barbs per rib and setting the number of knitting times to 50 times/cm 2 . Therefore, a felt layer having a total mass of 700 g/m 2 was obtained in accordance with the mass of the woven fabric of 200 g/m 2 , the surface side felt mass of 250 g/m 2 and the inner side felt mass of 250 g/m 2 .
‧實施上述針織後,進而於上述毛氈層之兩外周面(表裏)上,使用作為間位芳香族聚醯胺之Twaron(商品名/帝人製造)之化纖短纖維,即2 dtex(分特)之50 mm切斷長度之短纖維,利用每1棱為6鉤刺之針,將針織次數設為50次/cm2,而設置追加之毛氈層。追加之毛氈層係於表面側追加質量150 g/m2且於裏面側追加質量150 g/m2而成為合計質量1000 g/m2之毛氈層。 ‧ After performing the above-mentioned knitting, a chemical fiber short fiber of Twaron (trade name / manufactured by Teijin), which is a meta-aromatic polyamine, is used on the outer peripheral surface (front and back) of the felt layer, that is, 2 dtex (dtex) The short fiber having a length of 50 mm was cut, and the number of knitting times was set to 50 times/cm 2 using a hook of 6 knurls per rib, and an additional felt layer was provided. The additional felt layer based on the surface side of the additional mass of 150 g / m 2 and to the back side of the additional mass of 150 g / m 2 make up a total mass of 1000 g / m 2 of the felt layer.
‧實施上述針織後,進而對上述毛氈層之兩外周面(表裏),使用每2棱為18鉤刺之針,將針織次數設為80次/cm2,而實施最後之針織,製成本發明之毛氈層(合計質量為1000 g/m2)。 ‧ After performing the above-mentioned knitting, the outer peripheral surface (front and back) of the felt layer is further formed into a knitting machine by using a needle having 18 hooks per two ribs and setting the number of knitting times to 80 times/cm 2 to form the present invention. The felt layer (total mass 1000 g/m 2 ).
於上述毛氈層之兩外周面(表裏)上塗佈氟橡膠系黏著劑,繼而於其表裏面接合玻璃布作為耐熱布,進而在其表裏面配置四氟乙烯系膜作為表層材,製成實施例1之成形壓製用緩衝材。另外,四氟乙烯系膜及玻璃布之詳細情況及配置後之加工條件如下所述。 A fluororubber-based adhesive is applied to the outer peripheral surfaces (front and back) of the felt layer, and then a glass cloth is bonded to the front and back surfaces thereof as a heat-resistant cloth, and a tetrafluoroethylene film is placed on the front surface thereof as a surface layer. The cushioning material for forming press of Example 1. Further, the details of the tetrafluoroethylene film and the glass cloth and the processing conditions after the arrangement are as follows.
‧四氟乙烯系膜(表層材);四氟乙烯-六氟丙烯共聚物(FEP),厚度25 μm。 ‧ tetrafluoroethylene film (surface material); tetrafluoroethylene-hexafluoropropylene copolymer (FEP), thickness 25 μm.
‧玻璃布;質量200 g/m2,厚度200 μm。 ‧ glass cloth; mass 200 g / m 2 , thickness 200 μm.
加工條件;對上述成形壓製用緩衝材於280℃下以10 kg/cm2之壓力實施時間20分鐘之熱壓製。 Processing conditions; the above-mentioned press-forming cushioning material was subjected to hot pressing at 280 ° C for 20 minutes under a pressure of 10 kg / cm 2 .
代替實施例1之氟橡膠系黏著劑而配置厚度25 μm之四氟乙烯系膜(FEP)作為接合材,除此以外,於相同之條件下製作實施例2之成形壓製用緩衝材。 A cushioning material for forming press of Example 2 was produced under the same conditions except that a tetrafluoroethylene film (FEP) having a thickness of 25 μm was placed as a bonding material instead of the fluororubber-based adhesive of Example 1.
將實施例2之表層材四氟乙烯系膜(FEP)變更為厚度50 μm,除此以外,於相同之條件下製作實施例3之成形壓製用緩衝材。 The cushioning material for forming press of Example 3 was produced under the same conditions except that the surface layer tetrafluoroethylene film (FEP) of Example 2 was changed to a thickness of 50 μm.
將實施例2之表層材四氟乙烯系膜(FEP)變更為厚度100 μm,除此以外,於相同之條件下製作實施例4之成形壓製用緩衝材。 The cushioning material for forming press of Example 4 was produced under the same conditions except that the surface layer tetrafluoroethylene film (FEP) of Example 2 was changed to a thickness of 100 μm.
將實施例2之玻璃布變更為質量150 g/m2、厚度150 μm,除此以外,於相同之條件下製作實施例5之成形壓製用緩衝材。 The cushioning material for forming press of Example 5 was produced under the same conditions except that the glass cloth of Example 2 was changed to a mass of 150 g/m 2 and a thickness of 150 μm.
將實施例2之玻璃布變更為質量250 g/m2、厚度250 μm,除此以外,於相同之條件下製作實施例6之成形壓製用緩衝材。 The cushioning material for forming press of Example 6 was produced under the same conditions except that the glass cloth of Example 2 was changed to a mass of 250 g/m 2 and a thickness of 250 μm.
將實施例2之玻璃布變更為質量100 g/m2、厚度100 μm,除此以外,於相同之條件下製作實施例7之成形壓製用緩衝材。 The cushioning material for forming press of Example 7 was produced under the same conditions except that the glass cloth of Example 2 was changed to a mass of 100 g/m 2 and a thickness of 100 μm.
將實施例2之玻璃布變更為質量300 g/m2、厚度300 μm,除此以外,於相同之條件下製作實施例8之成形壓製用緩衝材。 The cushioning material for forming press of Example 8 was produced under the same conditions except that the glass cloth of Example 2 was changed to a mass of 300 g/m 2 and a thickness of 300 μm.
將實施例2之表層材四氟乙烯系膜變更為厚度25 μm之四氟乙烯-乙烯共聚物(ETFE),除此以外,於相同之條件下製作實施例9之成形壓製用緩衝材。 The cushioning material for forming press of Example 9 was produced under the same conditions except that the surface layer tetrafluoroethylene film of Example 2 was changed to a tetrafluoroethylene-ethylene copolymer (ETFE) having a thickness of 25 μm.
將實施例2之表層材四氟乙烯系膜變更為厚度25 μm之四氟乙烯-全氟烷基乙烯基醚共聚物(PFA),於加工條件內將加熱溫度變更為315℃。除此以外,於相同之條件下製作實施例10之成形壓製用緩衝材。 The surface layer tetrafluoroethylene film of Example 2 was changed to a tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer (PFA) having a thickness of 25 μm, and the heating temperature was changed to 315 ° C under the processing conditions. Otherwise, the cushioning material for forming press of Example 10 was produced under the same conditions.
將實施例2之表層材四氟乙烯系膜變更為厚度25 μm之聚四氟乙烯(PTFE),於加工條件內將加熱溫度變更為330℃。除此以外,於相同之條件下製作實施例11之成形壓製用緩衝材。 The surface layer tetrafluoroethylene film of Example 2 was changed to polytetrafluoroethylene (PTFE) having a thickness of 25 μm, and the heating temperature was changed to 330 ° C in the processing conditions. Otherwise, the cushioning material for forming press of Example 11 was produced under the same conditions.
於上述毛氈層之表裏面配置四氟乙烯系膜作為表層材,製作比較例1之成形壓製用緩衝材。另外,四氟乙烯系膜及配置後之加工條件如下所述。 A tetrafluoroethylene film was placed as a surface layer in the surface of the felt layer, and a cushioning material for forming press of Comparative Example 1 was produced. Further, the tetrafluoroethylene film and the processing conditions after the arrangement are as follows.
‧四氟乙烯系膜(表層材);四氟乙烯-六氟丙烯共聚物(FEP),厚度25 μm。 ‧ tetrafluoroethylene film (surface material); tetrafluoroethylene-hexafluoropropylene copolymer (FEP), thickness 25 μm.
加工條件;對上述比較例1之成形壓製用緩衝材於280℃下以10 kg/cm2之壓力實施20分鐘之熱壓製。 Processing conditions; The press-forming cushioning material of Comparative Example 1 described above was subjected to hot pressing at 280 ° C for 20 minutes under a pressure of 10 kg/cm 2 .
於上述毛氈層之表裏面依序配置作為接合材之厚度25 μm之四氟乙烯系膜、及玻璃布,製成比較例2之成形壓製用緩衝材。再者,四氟乙烯系膜及玻璃布之詳細情況以及配置後之加工條件如下所述。 A tetrafluoroethylene film having a thickness of 25 μm as a bonding material and a glass cloth were placed in the surface of the felt layer in this manner to prepare a cushioning material for forming press of Comparative Example 2. Further, the details of the tetrafluoroethylene film and the glass cloth and the processing conditions after the arrangement are as follows.
‧四氟乙烯系膜(接合材);四氟乙烯-六氟丙烯共聚物(FEP),厚度25 μm。 ‧ tetrafluoroethylene film (bonding material); tetrafluoroethylene-hexafluoropropylene copolymer (FEP), thickness 25 μm.
‧玻璃布;質量200 g/m2,厚度200 μm。 ‧ glass cloth; mass 200 g / m 2 , thickness 200 μm.
加工條件;對上述成形壓製用緩衝材於280℃下以10 kg/cm2之壓力實施20分鐘之熱壓製。 Processing conditions; the above-mentioned press-forming cushioning material was subjected to hot pressing at 280 ° C for 20 minutes under a pressure of 10 kg / cm 2 .
對於該等實施例及比較例中所製作之樣品,使用具有與圖1所示者相同之構造的試驗機,測定緩衝材之性能。再 者,將緩衝材於溫度190℃、壓力40 kg/cm2之條件下保持60分鐘,其後水浴冷卻15分鐘,加壓開放15分鐘,將上述操作設為1個循環,反覆進行300個循環,對每一次壓製實施如下測定。 For the samples prepared in the examples and the comparative examples, the performance of the cushioning material was measured using a test machine having the same structure as that shown in Fig. 1. Further, the buffer material was kept at a temperature of 190 ° C and a pressure of 40 kg / cm 2 for 60 minutes, and then cooled in a water bath for 15 minutes, and pressurized for 15 minutes, and the above operation was set to one cycle, and 300 cycles were repeated. The cycle was carried out, and the following measurement was performed for each press.
‧緩衝位移量(μm)之測定:測定於180℃之加熱下以0.2 kg壓製之情形及以50 kg壓製之情形的緩衝材之厚度。並且,求出0.2 kg時與50 kg時之厚度差,設為緩衝位移量(μm)。作為評價,將緩衝量為300 μm以上者設為「優異」,將200 μm以上且未達300 μm者設為「良好」,將未達200 μm者設為「不良」。 ‧ Determination of the amount of buffer displacement (μm): The thickness of the cushioning material in the case of pressing at 0.2 kg under heating at 180 ° C and the case of pressing at 50 kg was measured. Further, the difference in thickness between 0.2 kg and 50 kg was obtained, and the amount of buffer displacement (μm) was used. In the evaluation, those with a buffer amount of 300 μm or more were set to “excellent”, those of 200 μm or more and less than 300 μm were set to “good”, and those of less than 200 μm were set to “bad”.
‧表面粗糙度(μm)之測定:測定緩衝材之外周面之粗糙度(Ra)。作為評價,將粗糙度(Ra)為3 μm~30 μm者設為「適合」,將除此以外者設為「不適合」。 ‧ Measurement of surface roughness (μm): The roughness (Ra) of the outer peripheral surface of the cushioning material was measured. For the evaluation, those having a roughness (Ra) of 3 μm to 30 μm were set as "appropriate", and those other than the above were set as "unsuitable".
‧貼附之有無:確認是否貼附於熱盤或鏡面板,或者以目視確認貼附之有無。將無貼附者設為「優異」,將有貼附但於5秒以下剝落者設為「良好」,將貼附5秒以上或密接而不剝落者設為「不良」。 ‧ Whether the attachment is attached: Check whether it is attached to the hot plate or the mirror panel, or visually confirm the presence or absence of the attachment. If the unattached person is set to "excellent", it will be attached as "excellent" if it is peeled off for 5 seconds or less, and it will be "bad" if it is attached for 5 seconds or more.
將使用上述試驗機測得之緩衝材之性能之結果示於表中。因此,於本發明之實施例中,可確認作為緩衝材而具有優異之緩衝性及貼附防止效果。 The results of the performance of the cushioning material measured using the above test machine are shown in the table. Therefore, in the examples of the present invention, it was confirmed that the cushioning material has excellent cushioning properties and adhesion preventing effects.
於粗糙度(Ra)未達3 μm之比較例1中,緩衝材表面變得過於平滑,貼附於熱盤及鏡面板上。又,於粗糙度(Ra)超過30 μm之比較例2中,對積層板施加之熱及壓力未於緩衝材之整面變得均勻。 In Comparative Example 1 in which the roughness (Ra) was less than 3 μm, the surface of the cushioning material became too smooth and attached to the hot plate and the mirror panel. Further, in Comparative Example 2 in which the roughness (Ra) exceeded 30 μm, the heat and pressure applied to the laminate were not uniform over the entire surface of the cushioning material.
1A、1B、21A、21B‧‧‧毛氈層 1A, 1B, 21A, 21B‧‧‧ felt layers
1C、1D、21C、21D‧‧‧耐熱布 1C, 1D, 21C, 21D‧‧‧ heat-resistant cloth
1E‧‧‧緩衝材之熱盤側面 1E‧‧‧The hot plate side of the cushioning material
2E‧‧‧緩衝材之鏡面板側面 2E‧‧‧Surface of the mirror panel
10、20‧‧‧緩衝材 10, 20‧‧‧ cushioning material
10B‧‧‧基體 10B‧‧‧ substrate
P1、P2、P3、P4‧‧‧四氟乙烯系膜 P1, P2, P3, P4‧‧‧ tetrafluoroethylene film
圖1表示積層板之成形壓製之例子。 Fig. 1 shows an example of forming press of a laminate.
圖2表示先前之成形壓製用緩衝材。 Fig. 2 shows a prior art cushioning material for forming press.
圖3表示本發明之成形壓製用緩衝材之態様之例子。 Fig. 3 shows an example of the state of the cushioning material for forming press of the present invention.
圖4表示本發明之成形壓製用緩衝材之其他態様之例子。 Fig. 4 shows an example of other aspects of the cushioning material for forming press of the present invention.
1A、1B‧‧‧毛氈層 1A, 1B‧‧‧ felt layer
1C、1D‧‧‧耐熱布 1C, 1D‧‧‧ heat-resistant cloth
1E‧‧‧緩衝材之熱盤側面 1E‧‧‧The hot plate side of the cushioning material
2E‧‧‧緩衝材之鏡面板側面 2E‧‧‧Surface of the mirror panel
10B‧‧‧基體 10B‧‧‧ substrate
P1、P2‧‧‧四氟乙烯系膜 P1, P2‧‧‧ tetrafluoroethylene film
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