THERMOPLASTIC RESIN COMPOSITION, LID MATERIAL FOR EASILY OPENABLE CONTAINER, AND EASILY OPENABLE CONTAINER

PROBLEM TO BE SOLVED: To provide a thermoplastic resin composition having easily openability through cohesive failure, and can form a seal layer which has sufficiently high heat seal strength and is excellent in easy openability and peeling appearance.SOLUTION: A thermoplastic resin composition cont...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: WATANABE NAOYA, HIBINO MICHIKO
Format: Patent
Sprache:eng ; jpn
Schlagworte:
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:PROBLEM TO BE SOLVED: To provide a thermoplastic resin composition having easily openability through cohesive failure, and can form a seal layer which has sufficiently high heat seal strength and is excellent in easy openability and peeling appearance.SOLUTION: A thermoplastic resin composition contains the following components (A) to (C) component (A): polyolefin; component (B): a polystyrene resin; and component (C): a styrene thermoplastic elastomer which is made from at least one block copolymer selected from the group consisting of a block copolymer having at least one polymer block P derived from a vinyl aromatic compound and at least one polymer block Q derived from conjugated diene, and a block copolymer obtained by hydrogenation of the block copolymer, where a content of a diblock copolymer contained in the block copolymer is 20 mass% or more.SELECTED DRAWING: None 【課題】凝集破壊による易開封性を有する熱可塑性樹脂組成物であって、ヒートシール強度が十分に高く、易開封性、剥離外観等に優れたシール層を形成することができる熱可塑性樹脂組成物を提供する。【解決手段】下記(A)〜(C)成分を含む熱可塑性樹脂組成物。(A)成分:ポリオレフィン(B)成分:ポリスチレン系樹脂(B)成分:ビニル芳香族化合物に由来する少なくとも1個の重合体ブロックPと、共役ジエンに由来する少なくとも1個の重合体ブロックQとを有するブロック共重合体、並びに該ブロック共重合体を水素添加してなるブロック共重合体よりなる群から選ばれる少なくとも1つのブロック共重合体よりなり、該ブロック共重合体に含まれるジブロック共重合体の合計量が20質量%以上であるスチレン系熱可塑性エラストマー【選択図】なし