Hydraulic binder-based, tapered-edge boards, production method and production line therefor, and light work construction method

Abstract: The subject of the invention is a novel plasterboard and its manufacturing processes. The novel board comprises, on one side, two first parallel feathered edges and, on the other side, two other, second, parallel feathered edges that are perpendicular to the first ones; or, on one side, two first parallel feathered edges and, either on the same side or on the other side, two second parallel feathered edges that are perpendicular to the first ones, the said other parallel feathered edges having a width of between 100 and 200 mm; or, on one side, two first parallel feathered edges and, either on the same side or on the other side, two second parallel feathered edges that are perpendicular to the first ones, the said second parallel feathered edges having a width such that the ratio of the width of the said second parallel feathered edges to the width of the said first parallel feathered edges is between 1.5 and 5. (end of abstract)

Agent: Buchanan Ingersoll PC - Alexandria, VA, US
Inventors: Paul Jallon, Jean-Louis Laurent, Frederic Peronnet, Roger Arese, Lionel Zbinden, Emmanuel Vial, Loic Martin
USPTO Applicaton #: #20060198989 - Class: 428157000 (USPTO)
Related Patent Categories: Stock Material Or Miscellaneous Articles, Structurally Defined Web Or Sheet (e.g., Overall Dimension, Etc.), Including Variation In Thickness, Differential Nonuniformity At Margin

Hydraulic binder-based, tapered-edge boards, production method and production line therefor, and light work construction method description/claims

The Patent Description & Claims data below is from USPTO Patent Application 20060198989, Hydraulic binder-based, tapered-edge boards, production method and production line therefor, and light work construction method.

Brief Patent Description - Full Patent Description - Patent Application Claims

RELATED APPLICATION

[0001] The instant application is a continuation-in-part of PCT/FR04/001265, filed May 21, 2004, the content of which being incorporated by reference.

FIELD OF THE INVENTION

[0002] The invention relates to a process for manufacturing hydraulic-binder-based boards and to a line for producing hydraulic-binder-based boards using this apparatus.

[0003] The invention also relates to a novel plasterboard having a particular geometry.

[0004] U.S. Pat. No. 4,781,558 describes an apparatus intended for manufacturing plasterboards with recesses. It therefore proposes the forming, on a preform intended to be cut in order to give plasterboards, of recesses by means of a drum 34 having bosses 36 (see especially FIG. 1 of that patent). The depth of the recesses is therefore determined by the size of the bosses. Thus, to change the depth and/or the shape of these recesses, it would be necessary to replace the drum 34 with another drum having bosses of different size and/or shape. That document is particularly intended for the production of a particular surface finish of the plasterboards; it does not mention the particular application of producing an impression in the form of a feathering, transversely with respect to the axis of the board, on the back of the latter (namely in this case the upper side).

[0005] In U.S. Pat. No. 2,991,824, impressions 51A, 51B are made in a preform that is intended to be cut to give plasterboards, by means (see especially FIG. 1 and column 3, lines 29 to 43 of that patent) of a band 20 rotating about two rollers 21 and having a protuberance 25. The preform is then cut in the middle of the impressions so as to produce boards with feathered ends or transverse feathered edges.

[0006] In U.S. Pat. No. 2,246,987, impressions are made in a preform that is intended to be cut in order to give plasterboards, by means (see especially FIGS. 1 and 7) of a band 20 having a plurality of protuberances 23, 38. In one embodiment, impressions are made on both sides of the board at the same time.

[0007] In this case too, in order to change the dimensions and/or shape of the impressions, it would be necessary to replace the band 20 with another band having protuberances of different size and/or shape.

[0008] The object of the invention is to solve the problem of making impressions in a preform, while still offering the possibility for the size and/or shape of these impressions to be easily and quickly changed.

[0009] The object of the invention is also to solve the problem of making impressions in a preform using a process generally of the type of that described in U.S. Pat. No. 2,991,824, allowing the production of feathered ends or transverse feathered edges in a satisfactory manner.

SUMMARY OF THE INVENTION

[0010] The invention therefore provides a novel board made of a hydraulic binder with a facing on each of its sides, having, on one side, two first parallel feathered edges (10) and, on the other side, two other parallel transverse feathered ends or feathered edges (25a) that are perpendicular to the first ones.

[0011] The invention also provides a novel board made of a hydraulic binder with a facing on each of its sides, having, on one side, two first parallel feathered edges (10) and, either on the same side or on the other side, two second parallel feathered edges (25a) that are perpendicular to the first ones, the said other parallel feathered edges (25a) having a width of between 100 and 200 mm.

[0012] The invention also provides a novel board made of a hydraulic binder with a facing on each of its sides, having, on one side, two first parallel feathered edges (10) and, either on the same side or on the other side, two second parallel feathered edges (25a) that are perpendicular to the first ones, the said second parallel feathered edges (25a) having a width such that the ratio of the width of the said second parallel feathered edges (25a) to the width of the said first parallel feathered edges (10) is between 1.5 and 5.

[0013] The invention also provides a method of constructing an interior structure using this board, and also a process and a device for manufacturing this board.

[0014] The invention also provides a process and devices for manufacturing boards made of a hydraulic binder having four feathered edges on the same side.

[0015] More specifically, the invention uses in particular a device for producing an impression or pocket in a preform based on a hydraulic binder. This apparatus therefore comprises at least: [0016] a frame; [0017] two first pulleys supported at a first end of the frame and two second pulleys at a second end of the frame; the first pulleys and second pulleys being in parallel planes; the pulleys facing each other being identical; [0018] two transmission belts wrapped respectively around the first pulleys and the second pulleys; and [0019] at least one wire fixed removably to the belts and extending between these belts, in such a way that its longitudinal axis is parallel to the axis of rotation of the pulleys.

[0020] Thanks to this apparatus, it is therefore sufficient simply to detach the removable means and to replace them with others having a different size and/or shape in order to change the size and/or shape of the impressions produced in the preform.

[0021] Furthermore, the use of such an apparatus allows the spacing between two impressions, and therefore the length of the boards, to be easily varied.

[0022] The subject of the invention is also a process for manufacturing a hydraulic-binder-based board from a preform intended to be cut up, this process including a step during which an impression is made in the preform by means of an apparatus according to the invention.

[0023] This process has the advantage in particular of making it possible to obtain boards with feathered edges in which board the transverse feathered edges may be on the same side as the conventional feathered edges or on the opposite side.

[0024] Finally, the subject of the invention is also a line for producing hydraulic-binder-based boards from a preform comprising a facing material covered with a hydraulic binder composition and supported by a conveyor belt (or forming belt). This production line also has the advantage of allowing boards with feathered edges to be produced.

BRIEF DESCRIPTION OF THE DRAWINGS

Brief Patent Description - Full Patent Description - Patent Application Claims
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