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AssigneeDanapak Flexibles A/S
InventorsPalle Schmidt, Peter Johansen, Else Dydensborg, Ole Brødsgaard, Benjamin Waedeled, Lars Christensen
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A laminate for use in packages comprises a base layer (3), a welding layer (1), and an adhesive layer (2) sandwiched there between. The adhesive layer (2) is a hot melt or a pressure sensitive adhesive (PSA) having a shear rate of 10-150 minutes at 40° C. in a test area of 12.5 mm×25 mm. The welding layer (1) comprises a layer of a polyethylene (PE) copolymer, and optionally an additional layer of PET, PE, such as low density polyethylene (LDPE) and/or PP. The method of making the laminate involves applying a base layer (3), an adhesive layer (2) of hot melt/PSA and subsequently a welding layer (1) in one working process to form a reclosable laminate (9). This laminate may serve as a reclosable lid and exhibits a reduced risk of cracks or so-called piping in the laminate.
A laminate for use in packages comprising a base layer and a welding layer, and an adhesive layer sandwiched there between, characterized in that the adhesive layer (2) is a hot melt or a pressure sensitive adhesive (PSA) having a shear rate of 10-150 minutes at 40° C. using a load of 1000 g at 40° C. in a test area of 12.5 mm×25 mm, and that the welding layer (1) comprises a layer of a polyethylene (PE) homo- or copolymer.
A method of making a reclosable laminate, such as a lid film for packages, said laminate comprising a base layer, characterized in that an adhesive layer (2) of hot melt/PSA is applied to the base layer (3) during feeding (10), following which a welding layer (1) is extruded on the adhesive layer (2).
Dependencies are inferred from the claim text.