Laminated glazing pane
First Claim
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1. A laminated glazing pane for use as an aircraft windshield, comprising at least two glass sheets separated by an intermediate film of a polyvinyl butyral type plastic material, and at least one ring comprising a plastic material having:
- a shear modulus of from 1 to 100 MPa at between -30°
C. and +40°
C. which shear modulus is smaller than the shear modulus of the intermediate film;
greater elongation properties than the elongation properties of the intermediate film; and
properties of adhesion to the intermediate film and to the glass,said ring interposed between at least one glass sheet and the intermediate film in the marginal part of the pane.
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Abstract
This invention relates to a laminated glazing pane which may be used as an aircraft windshield. The pane comprises at least two glass sheets connected together by an intermediate layer of polyvinyl butyral and, in its marginal zone, between at least one glass sheet and the intermediate layer, at least one adhesive ring comprising a plastic material which absorbs at least a portion of the stresses to which the pane is subjected during operation.
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Citations
21 Claims
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1. A laminated glazing pane for use as an aircraft windshield, comprising at least two glass sheets separated by an intermediate film of a polyvinyl butyral type plastic material, and at least one ring comprising a plastic material having:
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a shear modulus of from 1 to 100 MPa at between -30°
C. and +40°
C. which shear modulus is smaller than the shear modulus of the intermediate film;greater elongation properties than the elongation properties of the intermediate film; and properties of adhesion to the intermediate film and to the glass, said ring interposed between at least one glass sheet and the intermediate film in the marginal part of the pane. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification