METHOD AND DEVICE FOR MANUFACTURING MULTILAYER STRUCTURE Russian patent published in 2012 - IPC A61F13/15 

FIELD: medicine.

SUBSTANCE: invention relates to method of manufacturing multilayer structure (22) for application in absorbing product, such as diaper, sanitary napkin, sanitary towel, absorbing diaper, used in case of incontinence, etc., formed by multiple layers (6, 7, 8) of material, containing, at least, first layer (6), which is liquid-permeable, second layer (7), forming absorbing element (7) and third layer (8), each of said layers (6, 7, 8) being made of material which has specified radius of pores (R1, R2, R3), claimed method contains stages, at which: said layers (6, 7, 8) of material are connected by means of, at least, two stages (4, 12) of ultrasonic sealing, and provide pattern (15, 17) of ultrasonic sealing for each of said stages of sealing, each of said patterns (15, 17) of sealing being formed by multiple places (16, 18) of connection. Method in accordance with invention contains stages, at which said stages (4, 11) of sealing are provided for formation in general integral absorbing product; and said patterns (15, 17) of sealing are selected in such a way that, at least, generally multilayer structure (22) has pores of multitude of radii. Said stages (4, 11) of sealing contain, at least, and in the following sequence: first stage of sealing, at which third layer (8) and second layer (7) are connected, and second stage of sealing, at which connected third and second layers (8, 7) are connected with first layer (6).

EFFECT: provision of method and device for manufacturing multilayer material for absorbing product, improved in comparison with product of the previous level of technology and having optimal characteristics of liquid absorption and relatively low degree of secondary damping.

12 cl, 8 dwg