| 摘要 |
#CMT# #/CMT# A packaging container with a laminate (45) comprises a film-shaped substrate (44) bonded to a hot-sealing layer (38) via a contact adhesive layer (36) for easy opening and re-closing the container, and is bonded to itself via a sealing seam or to another film to form a pouch or, as a lid, bonded to the edge of a pouch. The contact adhesive layer is arranged between a layer of adhesive (34) in the form of permanent adhesive and the hot-sealing layer, or between two layers of adhesive in the form of permanent adhesive, and the hot-sealing layer ruptures in a cohesive manner. #CMT# : #/CMT# Independent claims are also included for: (1) a process for manufacturing a laminate, comprising coating the film-type substrate via liquid-film coating using curtain coating or slide coating method with a multi-layer liquid film comprising the adhesive layer, contact adhesive layer and cohesively rupturing hot-sealing layer; and (2) the laminate. #CMT#USE : #/CMT# Used for packaging. #CMT#ADVANTAGE : #/CMT# The packaging container is formed in a simple and cost-favorable manner. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The figure is a sequence in the process of coating a substrate using curtain coating, shown in cross-section. 34 : Adhesive layer 36 : Contact adhesive layer 38 : Hot-sealing layer 44 : Film-shaped substrate 45 : Laminate #CMT#INORGANIC CHEMISTRY : #/CMT# Preferred Material: The substrate can be a metal foil. #CMT#POLYMERS : #/CMT# Preferred Component: The adhesive layers are functionally optimized with respect to the neighboring substrate and the hot-sealing layer. Preferred Property: The thickness of the adhesive layer is 1-30% of the thickness of the contact adhesive layer. Preferred Material: The adhesive layers comprise adhesives that are urethane-based. The contact adhesive layer contains an adhesive based on acrylic or A-B-A block-copolymers of isoprene and styrene or butadiene and styrene. The substrate can be a plastic film. #CMT#TEXTILES AND PAPER : #/CMT# Preferred Material: The substrate can be paper. |
