Patent ID: 9630330
Date: 2017-04-25
CPC Classifications: B26B,B29C,B29K,B29L

Claim:
1. A process for manufacturing a safety razor cartridge, the process comprising: providing an assembly comprising: a platform comprising a cap portion and two lateral side portions, the cap portion and the side portions of the platform having a top face that define a top face of the platform, elastic fingers extending from both lateral side portions of the platform, and vertical slots provided in an inner face of each lateral side portion of the platform, wherein the vertical slots are adapted to receive and to slidingly guide a cutting member, at least one cutting member extending between the lateral side portions of the platform, the at least one cutting member being supported by the elastic fingers, the at least one cutting member being movable with respect to the top face of the platform, the vertical slot guides a movement of the at least one cutting member, cover comprising a cap portion covering the cap portion of the platform and two lateral side portions extending from the cap portion and covering the lateral side portions of the platform, the cap portion and lateral side portions of the cover having a bottom face that define a bottom face of the cover, wherein the bottom face of the cover is facing the top face of the platform, wherein the two lateral side portions of the cover partially covers the at least one cutting member, wherein the cap portion and both lateral side portions of the platform and the cover each have at least one bonding portion projecting from the top face of the platform and the bottom face of the cover respectively, wherein due to the projecting bonding portions the top face of the platform is distant from the bottom face of the cover such that a gap is provided between the top face of the platform and the bottom face of the cover outside of the bonding portions, and welding the cover to the platform by applying an ultrasonic beam to the at least one bonding portion of the cap portion and lateral side portions of the cover of the assembly wherein the at least one cutting member is biased by the elastic fingers in abutment with the cover, such that during welding, (i) each bonding portion is bonded with a corresponding flat portion of the top face of the platform or the bottom face of the cover, and (ii) the bonding occurs only at the bonding portions.