I. Impregnation bonding method
The impregnation method is the earliest and most widely used method in chemical bonding, also known as full impregnation or saturated impregnation, which is developed from the traditional saturated dyeing process.
Basic process flow:
The web is fed into a dip tank having a binder, and after immersion, a pair of rolls or a pipetting device is used to remove excess binder, and the web is cured by a drying device to become a nonwoven material.
According to the rolling liquid and liquid absorption method, it can be divided into padding type, liquid absorption type and liquid absorption-rolling liquid combination type. According to the mesh curtain form, it can be divided into single mesh curtain and double mesh curtain.
Features: Hard to handle, suitable for interlining.
(2) Single screen curtain impregnation (effectively reducing screen loss)
Rotary drum roller type impregnation machine
Rotary drum vacuum suction impregnation machine
A preferred method of producing a thin bonded nonwoven fabric suitable for use as a lining and disposable sanitary material.
(3) Double-network transfer impregnation
The web is horizontally moved and clamped up and down, which is not easily deformed and is suitable for processing wide webs.
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