Articles with tongue and groove joint and method of making...

B - Operations – Transporting – 27 – M

Patent

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B27M 3/04 (2006.01) E04F 15/04 (2006.01)

Patent

CA 2218237

Disclosed is laminate flooring and other articles with tongues and grooves for joining sections of the flooring or articles and a method of making the tongue and groove joints. The lower surfaces of the tongues and grooves are indexing surfaces for aligning the wear surfaces of the flooring sections. The tongues and grooves are made such that when the tongue is fully inserted into the groove, a continuous space is formed between the upper surface of the tongue and groove. The grooved edges arecut at an acute angle to the surface. This provides a space between the upper surfaces of the tongue and groove and between the edge surfaces above the tongues and grooves toward the wear surfaces of the flooring sections. Glue in the joint, upon curing, resists penetration of moisture and increases the strength of the joint.

La présente invention fait état d'un revêtement de sol stratifié et d'autres articles à assemblage à rainure et languette, ainsi que d'une méthode de fabrication des joints à rainures et languettes. Les surfaces inférieures des rainures et des languettes servent de surfaces de guidage pour aligner les surfaces d'usure des sections de revêtement. Lorsque la languette est entièrement insérée dans la rainure, il se forme une surface continue entre les surfaces supérieures des rainures et des languettes. Les rainures sont coupées dans un angle aigu par rapport à la surface, ce qui crée un espace entre les surfaces supérieures des rainures et des languettes et entre les surfaces des côtés situés au-dessus de ces dernières, vers les surfaces d'usure des sections de revêtement. Une fois séchée, la colle qui se trouve dans les joints résiste à la pénétration de l'humidité et accroît la solidité du joint.

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