B - Operations – Transporting – 32 – B
Patent
B - Operations, Transporting
32
B
154/70, 154/72.0
B32B 5/22 (2006.01) B29C 65/00 (2006.01) B29C 65/02 (2006.01) B32B 27/00 (2006.01) D06H 5/00 (2006.01) D06M 17/00 (2006.01) D06M 17/02 (2006.01) D06M 17/06 (2006.01) D06M 17/08 (2006.01) D06M 17/10 (2006.01) H05B 3/34 (2006.01) B29C 65/08 (2006.01) B29C 65/48 (2006.01)
Patent
CA 1050406
Abstract of the Disclosure This invention relates to a method for manufacturing a breathable laminate, such as a mattress cover, comprising thermofusible and non-thermofusible layers in any combination, said method comprising the steps of continuously feeding a thermofusible sheet into contact with one surface of a composite layer consisting, in a prescribed combination, of at least one breathable thermofusible layer and at least one breathable non-thermofusible surface layer, said thermofusible sheeting being in direct contact with said non-thermofusible layer, contacting said thermofusible sheet and said combination of layers with a plurality of spaced projections provided on a roller, and locally compressing said composite layer and thermofusible sheet by means of said projections for a pre- determined length of time in a direction of the thickness thereof to cause the thermofusible layer and thermofusible sheet to be fused at spaced locations and impregnated into the non-thermo- fusible layer from both the surfaces thereof to permit the former to be bonded to the latter, and removing the thermofusible sheet from the composite layer in a manner that the bonded portion of the sheet is torn apart from the thermofusible sheet.
215464
France Bed Co.
Na
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