US 11,787,100 B2
Process for making a package for foodstuff products
Sergio Mansuino, Mondovì (IT); and Giovanni Bonino, Ricca di Diano d'Alba (IT)
Assigned to SOREMARTEC S.A., Senningerberg (LU)
Appl. No. 16/483,945
Filed by SOREMARTEC S.A., Senningerberg (LU)
PCT Filed Jan. 30, 2018, PCT No. PCT/IB2018/050553
§ 371(c)(1), (2) Date Aug. 6, 2019,
PCT Pub. No. WO2018/146577, PCT Pub. Date Aug. 16, 2018.
Claims priority of application No. 100074 (LU), filed on Feb. 9, 2017.
Prior Publication US 2019/0381717 A1, Dec. 19, 2019
Int. Cl. B29C 51/08 (2006.01); B29C 51/26 (2006.01); B29C 51/42 (2006.01); B31B 50/59 (2017.01); B65B 11/52 (2006.01); B65B 47/06 (2006.01); B65B 51/22 (2006.01)
CPC B29C 51/082 (2013.01) [B29C 51/262 (2013.01); B29C 51/428 (2013.01); B31B 50/59 (2017.08); B65B 11/52 (2013.01); B65B 47/06 (2013.01); B65B 51/227 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A process for making a package (20) for foodstuff products comprising:
providing a first sheet (10) of wrapping, made of plastic material, and forming therein at least one first, hollow, portion (11), which is delimited, at least partially, by a second, perimetral, portion of said first sheet (13);
inserting a foodstuff product within said first, hollow, portion (11);
applying a second sheet of wrapping in contact with said second, perimetral, portion (13) so as to close said hollow portion (11) with said product inside; and
welding said second sheet (30) on said first sheet (10) along said second, perimetral, portion (11),
wherein forming of said first sheet includes:
providing a mould (21) having a mould cavity (21′);
providing a forming device (26) designed to co-operate with said mould cavity (21′) for forming said first sheet;
setting said first sheet (10) on said mould (21) and making on said first sheet, via said forming device (26), said first, hollow, portion (11) delimited by said second, perimetral, portion (13); wherein said first sheet of wrapping (10) has a thickness of less than or equal to 140 μm, and in that forming of said first sheet includes: providing said mould with a mould surface (221′) that surrounds said mould cavity (21′);
providing a first forming body (32) of the forming device (26) configured for pressing said first sheet of wrapping against said mould surface (221′);
during said step of formation of said first, hollow, portion (11), forming on at least said second portion (13) a series of pleats (122) identified by respective folding lines (122′) of said first sheet of wrapping that are oriented towards said hollow portion, wherein each folding line joins together two pleat sides of the respective pleat; and
via said first forming body (32) and said mould surface (221′), sealing said pleats (122) so as to prevent re-opening thereof;
squeezing said pleats (122) against said mould surface (221′) so that said pleats (122) and their respective pleat sides remain contained in the same general plane of the second perimetral portion (13); and
fixing said pleats squeezed against said mould surface in said position, via welding such that said pleats form an irregular arrangement.