To provide a vehicle roof member excellent in coating property.SOLUTION: A vehicle roof member comprises a laminate body comprising three layers, which are a layer A-a, and a layer B, and a layer A-b arranged in this order. If the total of a thickness of the layer A-a, a thickness of the layer B, and a thickness of the layer A-b is 100%, the total of the thickness of the layer A-a and the thickness of the layer A-b is 6% or more and 8% or less, the thickness of the layer A-a is 0.5% or more and 7.5% or less, the thickness of the layer A-b is 0.5% or more and 7.5% or less, and the thickness of the layer B is 92% or more and 94% or less. The vehicle roof member is formed by rolling this laminate body so that the total of the thickness of the layer A-a, the thickness of the layer B, and the thickness of the layer A-b is 70% or more and 93% or less. [The layer A-a and the layer A-b contain respective specific amounts of particular propylene polymer component, ethylene methacrylate copolymer component, and ethylene-(1-butene) copolymer component, and the layer B contains respective specific amounts of particular propylene polymer component and talc.]SELECTED DRAWING: Figure 1
【課題】塗装性に優れる自動車ルーフ用部材を提供する。【解決手段】層A−aと層Bと層A−bとの3層がこの順で積層されており、層A−aの厚みと層Bの厚みと層A−bの厚みとの合計を100%としたとき、層A−aの厚みと層A−bの厚みとの合計が6%以上8%以下であり、かつ、層A−aの厚みが0.5%以上7.5%以下であり、層A−bの厚みが0.5%以上7.5%以下であり、層Bの厚みが92%以上94%以下である積層体を、層A−aの厚みと層Bの厚みと層A−bの厚みとの合計が70%以上93%以下となるように圧延成形してなる、自動車ルーフ用部材。[層A−a及び層A−bは、特定のプロピレン重合体成分とエチレン・メタクリル酸メチル共重合体成分とエチレン−(1−ブテン)共重合体成分とを特定量含有し、層Bは、特定のプロピレン重合体成分とタルクとを特定量含有する。]【選択図】図1
VEHICLE ROOF MEMBER AND MANUFACTURING METHOD FOR VEHICLE ROOF MEMBER
自動車ルーフ用部材及び自動車ルーフ用部材の製造方法
2020-10-08
Patent
Electronic Resource
Japanese
IPC: | B62D MOTOR VEHICLES , Motorfahrzeuge / B29C Formen oder Verbinden von Kunststoffen , SHAPING OR JOINING OF PLASTICS / B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM , Schichtkörper, d.h. aus Ebenen oder gewölbten Schichten, z.B. mit zell- oder wabenförmiger Form, aufgebaute Erzeugnisse / C08K Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe , USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS / C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen |
European Patent Office | 2022
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