摘要:
A hot press cushioning material (14a) includes: a first nonwoven fabric (15) forming an inner layer; and second nonwoven fabrics (16a, 16b) placed on both surfaces of the first nonwoven fabric (15) and forming outer layers. Copolymerized para-aramid fibers having a basis weight of 80 to 400 g/m2 are used as a material of the second nonwoven fabrics (16a, 16b). Fibers that are more rigid than the copolymerized para-aramid fibers are used as a material of the first nonwoven fabric (15). Each of the first nonwoven fabric (15) and the second nonwoven fabrics (16a, 16b) has a heat resistant temperature of 270° C. or more.
摘要翻译:热压缓冲材料(14a)包括:形成内层的第一无纺布(15) 和布置在第一无纺布(15)的两个表面上并形成外层的第二无纺布(16a,16b)。 作为第二无纺布(16a,16b)的材料,使用单位面积重量为80〜400g / m 2的共聚对位芳族聚酰胺纤维。 作为第一非织造布(15)的材料,使用比共聚对位芳族聚酰胺纤维更刚性的纤维。 第一无纺布(15)和第二无纺布(16a,16b)的耐热温度为270℃以上。
摘要:
A hot-press cushion material is a complex comprising paper formed of a fiber material and a rubber impregnated in the paper, and the volume ratio between the fiber material and the rubber is within a range of 1/1.5 to 1/7.5, and the void ratio in the complex is within a range of 60 to 90%.
摘要:
A hot press cushioning pad 1 has a fiber-rubber composite material layer formed by a woven fabric and a rubber impregnated in the woven fabric. The warp of the woven fabric is a doubled and twisted yarn, and the weft thereof is a texturized yarn made of glass fibers. The fiber-rubber composite material layer has voids inside.
摘要:
A press belt having superior cracking resistance, wear resistance and pressure deflection resistance and an excellent traveling property and a method of manufacturing the same as well as a shoe press employing the same are provided. A press belt in a press comprising a rotatively traveling endless press belt and pressing means, including terminal corresponding areas (B, B′) corresponding to both ends of the pressing means in the cross direction and a central area (A) located between the terminal corresponding areas and mainly composed of thermosetting polyurethane obtained from a thermosetting polyurethane material containing a phenylene isocyanate derivative having an isocyanate group (NCO) on an end and a hardener having an active hydrogen group (H) on an end with the equivalent ratio (H/NCO) between the active hydrogen group and the isocyanate group set relatively high on the terminal corresponding areas and relatively low on the central area and a method of manufacturing the same.
摘要:
A ceramic-resin composite roll (1) comprises a metal roll core (2), a foundation layer (3) formed on the outer circumferential surface of the metal roll core (2) and a thermally sprayed ceramic film (4) formed on the outer circumferential surface of the foundation layer (3). The thermally sprayed ceramic film (4) includes a ceramic particle layer in which adjacent ceramic particles are fused and bonded to each other and a layer of a resin (6) penetrating into the spaces among the ceramic particles (5) from the surface of the ceramic particle layer to the surface of the foundation layer (3).
摘要:
A paper making elastic belt has a drainage channels in a surface. A surface roughness of a wall of the drainage channel is not more than 2.0 μm in arithmetic average roughness (Ra).
摘要:
A papermaking belt, used for a shoe pressing belt, a calender belt and a sheet transfer belt, is prevented from cracking and inhibited from growth of a crack, and comprises a reinforcing substrate (6) embedded in a thermosetting polyurethane layer (7) so that the said reinforcing substrate (6) and the said thermosetting polyurethane layer (7) are integrated with each other and the outer peripheral surface and the inner peripheral surface of the belt are formed by polyurethane layers, the polyurethane layer forming the outer peripheral surface is made of a composition containing a urethane prepolymer having isocyanate groups on ends and a hardener containing dimethylthiotoluenediamine.
摘要:
A shoe press belt capable of preventing the occurrence and growth of cracks therein and is used in a paper-making press apparatus containing a press roll, a belt, and a pressure shoe for pressing a material web, wherein the shoe press belt includes a reinforcing layer, a first elastic material layer, and a second elastic material layer. A plurality of grooves are formed at an exterior peripheral surface region of the first elastic material layer. The bottom of the grooves at an axial end region of the belt corresponding to at least one of an end-proximate region in an axial direction of the pressure shoe and an end-proximate region in an axial direction of the press roll extends toward the reinforcing layer relative to the bottom of the grooves at a region other than the end region.
摘要:
A liquid mixture containing a liquid polymeric material and a granular filler is injected into a mold (11) for centrifugal molding and subjected to centrifugal molding, thereby preparing a cylindrical body including a homogeneous dispersion layer (2) having the filler homogeneously dispersed in the polymeric material and a high-density packed bed (1), formed on the outer peripheral surface side or on the inner peripheral surface side of the homogeneous dispersion layer (2), containing the aforementioned polymeric material more densely filled with the aforementioned filler. The high-density packed bed (1) is removed for exposing the surface of the homogeneous dispersion layer (2). According to this structure, the yield of the elastic cylindrical body can be improved.
摘要:
A method is provided for manufacturing a laminate with cushioning material for forming press made with fiber material layers 31 and 32 superimposed with a bonding material layer 30 interposed, an upper rubber layer 33 positioned on an upper surface of one fiber material layer 31, a lower rubber layer 34 positioned on a lower surface of the upper rubber layer 33, and a lower exudation preventing layer 36 positioned on a lower surface of the lower rubber layer 34.