Lamination made of rigid substrates with thin adhesive strips
AssigneeTesa SE
InventorsThilo DOLLASE, Thorsten KRAWINKEL, Lesmona SCHERF, Minyoung BAI
Life of this patent
Estimating the term…
Abstract
A laminate made of two rigid substrates and an adhesive film arranged between them, at least one of the substrates being transparent, the thickness of the adhesive film being not greater than 80 μm and the adhesive film comprising at least one adhesive layer made of an adhesive compound to which one or more plasticizers are added, at least one of which is a reactive plasticizer.
Claims14
A laminate of two rigid substrates and one interposed adhesive film, at least one of the rigid substrates being transparent, wherein
- the thickness of the adhesive film is not more than 80 μm and the adhesive film comprises at least one adhesive layer composed of an adhesive admixed with one or more plasticizers of which at least one is a reactive plasticizer,
- the plasticizer fraction in the adhesive being in total at least 15 wt % and the fraction of reactive plasticizer in the adhesive being at least 5 wt %.
A process for producing a laminate of two rigid substrates and one interposed adhesive film, at least one of the rigid substrates being transparent,
- comprising at least two laminating steps, the adhesive film in the first process step being laminated onto one of the two rigid substrates, and the assembly thus produced, comprising first substrate and adhesive film, in the second laminating step being laminated together by the adhesive film side to the other rigid substrate, the second laminating step being carried out at not more than 50° C., and the thickness of the adhesive film being not more than 80 μm and the adhesive film comprising at least one adhesive layer of an adhesive admixed with one or more plasticizers of which at least one is a reactive plasticizer,
- the plasticizer fraction in the adhesive being in total at least 15 wt % and the fraction of reactive plasticizer in the adhesive being at least 5 wt %.
(canceled)
Dependencies are inferred from the claim text.