Unsized needled absorption core body process and device

Abstract

The invention discloses an unsized needled absorption core body method and device. The device comprises an opener, a first vacuum cotton feeding machine, a first carding machine, a first lapping machine, a duster, a barbing machine, a second lapping machine, a duster, a positive needling machine, a drying box, a compounding machine and a winding machine which are in sequential connection, and further comprises a second vacuum cotton feeding machine connected with the opener, wherein the second vacuum cotton feeding machine is connected with a second carding machine, and the second carding machine is connected with the second lapping machine. A core body produced by the device has the high absorption property and the strong flow guiding property of a wood pulp core body and the advantages of an ultra-thin and continuous layer of a compound core body; and through interweaving of cotton and non-woven cloth, the purpose of unsizing is achieved on the premise of ensuring the product qualityto be excellent.

Description

technical field [0001] The application relates to the field of personal hygiene products, in particular to a preparation process and equipment for a glue-free needle-punched absorbent core. Background technique [0002] At present, the core body of hygiene products is mainly divided into two categories: wood pulp core body and composite core body: wood pulp core body is formed by mixing fluff pulp and polymer water-absorbing resin (SAP), without layering or partitioning, wood pulp core body The water absorption effect of the body is good, but because its structure is relatively loose, there is no adhesive added, and the fluff pulp and SAP cannot be fixed, so there will be lumps and faults during use; the composite core is made of dust-free paper, non-woven Composed of cloth and SAP, each layer of material is bonded with hot melt adhesive. The core contains a large amount of SAP to ensure the water absorption of the diaper. After absorbing water, the overall expansion will be...

AI Technical Summary

Problems solved by technology

[0002] At present, the core body of hygiene products is mainly divided into two categories: wood pulp core body and composite core body: wood pulp core body is formed by mixing fluff pulp and polymer water-absorbing resin (SAP), without layering or partitioning, wood pulp core body The water absorption effect of the body is good, but because its structure is relatively loose, there is no adhesive added, and the fluff pulp and SAP cannot be fixed, so there will be lumps and faults during use; the composite core is made of dust-free paper, non-woven Composed of cloth and SAP, each layer of material is bonded with hot melt adhesive. The core contains a large amount of SAP to ensure the water absorption of the diaper. After absorbing water, the overall expansion will be flat and not lumpy.

The disadvantage of using a composite core is that the process is more complicated, the production speed of the equipment is low, and the cost will be higher than the traditional core.

At the same time, due to the large amount of sizing in the composite core, harmful substances such as formaldehyde and volatile organic compounds will be introduced during the production process, which will affect the health of users

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