Process and apparatus for manufacturing intermediate absorbent products, and absorbent articles obtained from such products
AssigneeKorma S.p.A.
InventorAntonio Sironi
Life of this patent
Estimating the term…
Abstract
A process for manufacturing a continuous web-like intermediate absorbent product including the steps of depositing onto a web-like supporting sheet a predetermined pattern of absorbent material. Bonding the deposited absorbent material to the supporting sheet by means of heat. Depositing longitudinal strips of an adhesive material onto the web-like sheet. Applying at least a further web-like sheet over the assembly, which joins the further sheet to the former in correspondence of the adhesive strips by compression. Longitudinally slitting the web-like composite assembly obtained and separately winding into rolls the narrower webs obtained, which include adjacent absorbent cores.
Claims13
A process for manufacturing a continuous web-like intermediate absorbent product comprising an absorbent material in powder, granule or fiber form, placed between containing sheets, the process comprising the steps of:
- a. depositing onto a flat exposed surface of at least one continuous web-like supporting sheet fed from a feeding reel, a layer of absorbent material in accordance with a predetermined pattern;
- b. bonding, by means of heat, said deposited absorbent material to the web-like supporting sheet;
- c. depositing longitudinal strips of an adhesive material onto said web-like supporting sheet;
- d. applying at least a further web-like sheet over the assembly joining said further web-like sheet to said supporting sheet in correspondence with said adhesive strips by compression;
- e. longitudinally slitting an obtained web-like composite assembly, and
- f. separately winding into rolls the narrower webs so obtained which comprise adjacent absorbent cores.
An apparatus for manufacturing a web-like intermediate absorbent product including absorbent materials in powder, granule or fiber form, sandwiched between supporting sheets, comprising:
- at least two feeding reels of a web-like supporting material;
- at least one dispenser for depositing a predetermined pattern of absorbent material in powder, granule or fiber form onto a web-like material sheet unrolled and fed from one of said reels;
- means for supplying heat for bonding said absorbent material to said sheet onto which it has been deposited;
- dispensing means for depositing longitudinal strips of an adhesive material onto said sheet;
- pressure means for applying a further web-like sheet and joining it to said web-like material sheet;
- one or more cutters for longitudinally dividing the so obtained web product into narrower composite webs;
- gathering means for winding into rolls said narrower composite webs comprising adjacent absorbent cores.
Dependencies are inferred from the claim text.