Transparent plastic pane of acrylic glass, process for making the same and use of the same
AssigneeRoehm GmbH
InventorsEgbert Schoela, Gerald Molnar, Mojmir Ruzicka
Life of this patent
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Abstract
A transparent plastic pane of acrylic glass with internal plastic filaments, which largely hold together the fragments formed in the event of a break characterized in that the plastic filaments are at least partly sized. The internal filaments can be sized completely and/or partly, for example in portions. Hereby the matrix adhesion of the filaments can be adjusted to the effect that any fragments which may be formed in the event of break are largely held together by the filaments without permitting undesired detachment of the filaments during thermal stresses in the normal range of −20 to 120° C. The plastic panes are suitable in particular as a noise protection wall.
Claims12
A transparent plastic pane of acrylic glass, comprising:
- internal plastic filaments which hold together fragments of said acrylic glass formed in the event of a break;
- wherein said plastic filaments are sized over a length of about 2 to 10 cm at intervals of from about 0.5 to 1.5 m with a solution comprising a) a sizing agent which comprises ≦10% of phenol;
- ≦2% of formaldehyde;
- ≦2% of methanol;
- and 30% of ethanol and b) p-toluenesulfonic acid in ethanol.
A transparent plastic pane of acrylic glass, consisting of:
- acrylic glass and sized plastic filaments which hold together fragments of said acrylic glass formed in the event of a break;
- wherein said plastic filaments are sized over a length of about 2 to 10 cm at intervals of about 0.5 to 1.5 m with a solution comprising a) a sizing agent which comprises 10% of phenol;
- ≦2% of formaldehyde;
- ≦2% of methanol;
- and ≦30% of ethanol and b) p-toluenesulfonic acid in ethanol.
A method for making a transparent plastic pane of acrylic glass, comprising:
- sizing plastic filaments over a length of about 2 to 10 cm at intervals of about 0.5 to 1.5 m, to obtain sized plastic filaments;
- embedding said sized plastic filaments in said acrylic glass to obtain internal plastic filaments;
- wherein said plastic filaments are sized with a solution comprising a) a sizing agent which comprises ≦10% of phenol;
- ≦2% of formaldehyde;
- ≦2% of methanol;
- and ≦30% of ethanol and b) p-toluenesulfonic acid in ethanol;
- wherein said internal plastic filaments hold together fragments of said acrylic glass formed in the event of a break.
Dependencies are inferred from the claim text.