Process for introducing perforations into laminates comprising silicone gels

The present invention relates to a process for introducing perforations in a laminate that comprises a silicone gel. The process according to the present invention, in particular, comprises the following steps: (iii) bringing an array of perforating elements in contact with a deformable layer of a l...

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Bibliographische Detailangaben
1. Verfasser:	JOHANNISON, Ulf
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING BANDAGES, DRESSINGS OR ABSORBENT PADS CLADDING OR PLATING BY SOLDERING OR WELDING CUTTING CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING CUTTING-OUT DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING,CUTTING-OUT, STAMPING-OUT OR SEVERING DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF,TUBULAR STRUCTURES OF THE BODY, E.G. STENTS FILTERS IMPLANTABLE INTO BLOOD VESSELS FIRST-AID KITS FOMENTATION HAND CUTTING TOOLS HUMAN NECESSITIES HYGIENE LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM MACHINE TOOLS MEDICAL OR VETERINARY SCIENCE METAL-WORKING NOT OTHERWISE PROVIDED FOR ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES PERFORATING PERFORMING OPERATIONS PROSTHESES PUNCHING SEVERING SEVERING BY MEANS OTHER THAN CUTTING SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS SOLDERING OR UNSOLDERING STAMPING-OUT TRANSPORTING TREATMENT OR PROTECTION OF EYES OR EARS WELDING WORKING BY LASER BEAM WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	The present invention relates to a process for introducing perforations in a laminate that comprises a silicone gel. The process according to the present invention, in particular, comprises the following steps: (iii) bringing an array of perforating elements in contact with a deformable layer of a laminate that at least comprises a substrate layer, a layer comprising a silicone gel and a deformable layer, wherein said deformable layer covers said layer comprising silicone gel; (iv) applying ultrasonic energy to said laminate in order to simultaneously introduce a plurality of perforations into said laminate, while providing deformed portions in said deformable layer, wherein said deformed portions penetrate into the plurality of perforations in said laminate; (v) after having introduced said plurality of perforations into said laminate, i.e. after step (iv), keeping said deformable layer in contact with said layer comprising silicone gel, such that said deformed portions remain penetrating into said plurality of perforations, for at least 12 hours, preferably at least 24 hours, further preferably at least 36 hours, further preferably at least 48 hours.