LAMINATE WITH SUPERIOR BARRIER PERFORMANCE AND PREPARATION METHOD THEREOF

A laminate, an article comprising the laminate and a method for preparing the laminate are provided. The present disclosure relates to a laminate, comprising a first substrate comprising a metalized polyethylene-based (PE based) film; a second substrate comprising a polyethylene terephthalate-based...

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Bibliographische Detailangaben
Hauptverfasser:	DU, Zhe, BAI, Chenyan, YUN, Xiaobing, WANG, Fanji, WANG, Kaili, ZHAO, Lianjiang, CHEN, Gaobing, WANG, Gang, XU, Jingyi, PAN, Jianping
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE ADHESIVES CHEMISTRY COMPOSITIONS BASED THEREON DYES LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL ORGANIC MACROMOLECULAR COMPOUNDS PAINTS PERFORMING OPERATIONS POLISHES THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING USE OF MATERIALS AS ADHESIVES
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Beschreibung
Zusammenfassung:	A laminate, an article comprising the laminate and a method for preparing the laminate are provided. The present disclosure relates to a laminate, comprising a first substrate comprising a metalized polyethylene-based (PE based) film; a second substrate comprising a polyethylene terephthalate-based film or a polypropylene-based film; and, an adhesive layer adhering the first substrate to the second substrate, wherein the adhesive layer is derived from a two-component solvent-based polyurethane adhesive composition; wherein the concentration of fatty acids or fatty acid derivatives in the metalized PE-based film is less than 300ppm, based on the total weight of the metalized PE-based film, wherein the two-component solvent-based polyurethane adhesive composition comprises a polyester polyol component and a polyisocyanate component, wherein the polyester polyol component has about 40wt%-60 wt %of aromatic rings in the backbone, based on the total weight of the polyester polyol and a molecular weight (Mw) between 5,000 and 50,000; and wherein the weight ratio of the polyester polyol component to the polyisocyanate component is from 100: 5 to 100: 30. L'invention porte sur un stratifié, un article comprenant le stratifié et un procédé de préparation du stratifié. La présente divulgation concerne un stratifié, comprenant un premier substrat comprenant un film à base de polyéthylène (à base de PE) métallisé; un second substrat comprenant un film à base de poly(téréphtalate d'éthylène) ou un film à base de polypropylène; et une couche adhésive faisant adhérer le premier substrat au second substrat, la couche adhésive étant dérivée d'une composition adhésive de polyuréthane à base de solvant à deux constituants; la concentration d'acides gras ou de dérivés d'acides gras dans le film à base de PE métallisé étant inférieure à 300 ppm, par rapport au poids total du film à base de PE métallisé, la composition adhésive de polyuréthane à base de solvant à deux constituants comprenant un constituant polyol de polyester et un constituant polyisocyanate, le constituant polyol de polyester ayant environ de 40 % en poids à 60 % en poids de cycles aromatiques dans le squelette, par rapport au poids total du polyol de polyester et un poids moléculaire (p.m.) compris entre 5 000 et 50 000; et le rapport en poids du constituant polyol de polyester au constituant polyisocyanate étant de 100 : 5 à 100 : 30.