Laminate and a method for producing a laminate consisting of at least three layers
a technology of laminates and layers, applied in the field of laminates consisting of at least three layers, can solve the problems of high flexural rigidity, unintentional high level of flexural rigidity, and undesirably large amount of adhesive between the film and the nonwoven
Inactive Publication Date: 2008-05-22
REIFENHAUSER GMBH & CO MASCHFAB
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AI Technical Summary
Benefits of technology
The solution achieves a high level of flexural rigidity, smooth surface quality, and secure connections between layers, enhancing the laminate's aesthetic appearance and printability.
Problems solved by technology
With these known laminates with nonwoven webs, a high level of flexural rigidity is also not necessarily intended.—The known laminates made from a nonwoven web and a film have further disadvantages however.
If for example a film is then to be adhesively bonded onto this nonwoven web surface, an undesirably large amount of adhesive is used in order to fill in the unevennesses in the nonwoven web surface, or the film is only adhesively bonded onto part of the nonwoven web surface so that a relatively weak connection results between the film and the nonwoven web.
Moreover, due to the rough or profiled surface of the laminate, subsequent printability is made more difficult.
Method used
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Embodiment Construction
[0011]One embodiment of the invention is characterised in that a three-layer or three-tier laminate is provided, the middle layer of which is formed by the nonwoven web, and the two outer layers of which are each formed by a film. According to a particularly preferred embodiment of the invention, a film or films made from thermoplastic synthetic are used. Advantageously, two films made from thermoplastic synthetic are provided for the laminate according to the invention, one of these films being attached to the upper side, and the other to the lower side of the nonwoven web. It is within the framework of the invention that these are extruded synthetic films which are produced, for example, with an appropriate wide slit tool. Preferably, at least one synthetic film connected to the nonwoven web, preferably two synthetic films attached on both sides to the nonwoven web consist at least 50% by weight of a synthetic from which the nonwoven web filaments are also made. According to a par...
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Abstract
A laminate consisting of at least three layers, one layer of the laminate being formed by at least one nonwoven web made from continuous filaments. This is a nonwoven web thermally hardened by means of the effect of a hot fluid. A further layer of the laminate is disposed both on the upper side and on the lower side of the nonwoven web and connected securely to the nonwoven web.
Description
CROSS REFERENCE[0001]This application is a division of and is based upon and claims the benefit of priority under 35 U.S.C. §120 for U.S. Ser. No. 11 / 284,840, filed Nov. 23, 2005, and claims the benefit of priority under 35 U.S.C. §119 from a European Patent Application No. 04027801.2, filed Nov. 23, 2004, the entire contents of each which are incorporated herein by reference.BACKGROUND OF THE INVENTION[0002]1. Field of Invention[0003]The invention relates to a laminate consisting of at least three layers, one layer of this laminate being formed from at least one nonwoven web made from continuous filaments. Furthermore, the invention relates to a method for producing a laminate consisting of at least three layers.—It is within the framework of the invention that the continuous filaments are made from a thermoplastic synthetic. In the following, the continuous filaments are also referred to as filaments. The continuous filaments are produced by means of a spinning device and in the f...
Claims
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IPC IPC(8): B32B5/02D04H3/08D04H3/10D04H3/105
CPCB32B5/02B32B5/022B32B5/10B32B27/12B32B2250/03D04H13/00B32B2274/00B32B2307/538D04H3/08D04H3/10D04H3/105B32B2250/40Y10T442/682Y10T442/2738Y10T442/674Y10T442/608B32B5/24
Inventor SOMMER, SEBASTIANFREY, DETLEFGUEDDEN, JENS
Owner REIFENHAUSER GMBH & CO MASCHFAB