A lightweight glass plate includes a first glass plate, a second glass plate and an intermediate layer that connects the first and the second plates together. The lightweight glass plate further includes at least one connection element that allows the lightweight glass plate to be connected to an abutting component. The connection element is embedded into the intermediate layer in an edge area of the lightweight glass plate and the intermediate layer extends to surfaces located between the connection element and the glass plates. The lightweight glass plate is preferably used in the preparation of elevator doors and/or car walls. The lightweight glass plates are lightweight and can transfer large forces.

An inner glass skin structure is configured by a sashless plate glass that overcomes the difference in the coefficients of linear expansion and insufficient rigidity of aluminum and glass having a superior design, in which the four sides of each of the sashless plate glass are covered by an aluminum covering material having narrow width. The inner glass skin structure is configured by a plurality of sashless plate glasses four sides of which are covered with an aluminum covering material, a door roller and a securing foot member respectively fixed on the bottom of each plate glass on the movable side and immovable side of the plate glass of the sliding door formation, and a lower rail member arranged underneath the plate glass and an upper rail member arranged directly above each plate glass. On the top and bottom of the plate glass, the inner face of an end face cover part of the covering material is bonded to an elastic intervening piece that is fixed to the end face of the plate glass; on both the lateral sides of the plate glass, a plurality of coupling strip plates are inserted in a coupling plate retaining section on the inner face of the end face cover part of the covering material in series with a predetermined spacing therebetween; and each coupling strip plate is bonded to an elastic intervening piece that is secured to the end face of the plate glass.

A door leaf (14) for a door system (10) has a main component (24), a carrier profile (26) and a strap (28). The main component (24) has an upper end face, a front end face, a lower end face and a rear end face, wherein the carrier profile (26) is attached to the upper end face. The strap (28) has a first end (38) and a second end (40), wherein the strap (28) is attached to the carrier profile (26) with the first end (38), subsequently extends along the front end face, the lower end face and the rear end face of the main component (24) and is subsequently attached to the carrier profile (26) with the second end (40).

Further, a door system (10) is shown.