Glass forming machine particle filter, a plunger unit, a blow head, a blow head support and a glass forming machine adapted to or comprising said filter

A particle filter for a glass forming machine operating according to a blow-and-blow process or according to a press-and-blow process, said particle filter is adapted for placing in at least an air channel serving pressurized air for counter blow of a parison in a blank mold forming station of said glass forming machine, and/or an air channel serving pressurized air for final blow and/or for finish cooling of a glass container made of said parison in a finish mold station of said glass forming machine, said particle filter comprising:

• a surface filter as a main filter media that prevents passage of particles above a certain size from a dirty side of said main filter media to a clean side of said main filter media and that also prevents final passage of said particles above said certain size into said parison or said glass container blown by said glass forming machine;
• an additional surface filter as a protective filter media more coarse than said main filter media and wherein said protective filter media is situated on said dirty side of said main filter media in order to protect said main filter media against impact of particles;
• and
• a porous support that is more coarse than said main filter media and is situated on said clean side of said main filter media to stabilize said main filter media against forces arising from particles arriving on said dirty side of said main filter media;
• wherein said main filter media is situated between said protective filter media and said porous support;
• and
• wherein said main filter media that is situated between said protective filter media and said porous support is held together with said protective filter media and said porous support by a filter body and a fastening that is inserted into said filter body with interference fit to said filter body or screwed together with said filter body;
• and
• wherein said particle filter is adapted for placing in at least said air channel due to its geometry wherein the outer dimension of said filter body overlaps the outer dimension of said fastening.