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Production line and manufacturing method of elastic air-permeable crimped compound non-woven fabric

A non-woven, crepe-type technology, applied in the field of sanitary napkins and diapers, can solve the problems of reducing the air permeability of composite non-woven fabrics, blocking the air permeability of elastic non-woven fabrics, and being inconvenient for non-woven fabrics to be compounded, etc. The effect of stretch ratio, ensuring comfort, and increasing stretch ratio

Inactive Publication Date: 2017-02-08
杨明达
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its shortcomings: First, when the composite non-woven fabric is composited, the elastic non-woven fabric and the elastic polyurethane breathable film need to be in a stretched state to complete the composite, and the elasticity of the elastic breathable film of the non-woven fabric after composite molding is affected by the elasticity. Restricted by non-woven fabrics, what is obtained is a composite non-woven fabric limited by the elasticity of elastic non-woven fabrics, and its elasticity is very limited; second, the composite of elastic non-woven fabrics and elastic polyurethane breathable membranes depends on hot-melt adhesives, while hot-melt adhesives The basic resin of the glue is EVA resin, which is copolymerized by ethylene and vinyl acetate under high temperature and high pressure, and the viscosity of EVA resin itself is very low, so a tackifier needs to be added, such as modified rosin (138 or 145), C5 petroleum resin, C9 Petroleum resin, terpene resin, etc., the addition of these ingredients makes the hot melt adhesive more viscous, but when it is used as a composite medium of elastic non-woven fabric and elastic polyurethane breathable film, it greatly blocks the air permeability of elastic non-woven fabric, making it The air permeability of the composite non-woven fabric after composite molding is greatly reduced, even poor
Its shortcomings: it is not convenient for the compounding of non-woven fabrics on its membrane surface

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Production line and manufacturing method of elastic air-permeable crimped compound non-woven fabric
  • Production line and manufacturing method of elastic air-permeable crimped compound non-woven fabric
  • Production line and manufacturing method of elastic air-permeable crimped compound non-woven fabric

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Example 1: Refer to the attached figure 1 . An elastic and breathable crepe type composite non-woven fabric production line, including a PLC controller 9, underneath the elastic polymer resin casting die 1 are elastic and breathable casting die forming roller groups 2-1 and 2-2, and multiple pairs of elastic and breathable The film stretching roller groups 3-1 and 3-2 are sequentially distributed laterally on one side of the elastic and breathable casting die forming roller group, and the composite forming roller groups 7-1 and 7-2 are laterally located in multiple pairs of elastic and breathable film stretching roller groups. End elastic breathable film stretching roll group 3-1 and 3-2 side. The elastic and air-permeable casting die forming roller sets 2-1 and 2-2 are composed of a smooth roller 2-1 and a convex knife roller 2-2; the smooth roller 2-1 surface is rigid and the convex knife roller 2-2 is convex The tooth surface of the shaped knife is in rigid contact w...

Embodiment 2

[0013] Embodiment 2: On the basis of embodiment 1, the surface of the smooth roll 2-1 is provided with a high temperature resistant anti-sticking nano coating. The elastic breathable film stretching roller group consists of smooth roller 3-1 and rubber roller 3-2 respectively coated with a layer of high temperature resistant anti-sticking nano coating. The high temperature resistant anti-sticking layer nano coating layer on the roller surface of the rubber roller 3-2 is an elastic layer. The surfaces of the composite rollers in the composite forming roller group are respectively coated with a layer of high temperature resistant anti-viscosity elastic nano coating.

Embodiment 3

[0014] Embodiment 3: On the basis of embodiment 1, the smooth roller 3-1 and the rubber roller 3-2 are equipped with an electric heating tube and a temperature sensor, and the temperature setting of the electric heating tube is controlled by the temperature collected by the temperature sensor Data and PLC controller. Multiple pairs of elastic breathable film stretching roller groups 3-1 and 3-2 middle and end roller groups are temperature control roller groups, and the smooth roller in the temperature control roller group is equipped with electric heating tubes and temperature sensors, and the temperature of the electric heating tube is set It is controlled by the temperature data collected by the temperature sensor and the PLC controller.

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Abstract

The invention relates to a production line and a manufacturing method of an elastic air-permeable crimped compound non-woven fabric, which can compound a surface-layer non-woven fabric and a bottom-layer non-woven fabric on two sides of an elastic air-permeable membrane in a stretching state without using a hot melt adhesive or stretching the non-woven fabric. Elastic high-molecular resin particles are cast into an elastic membrane by an elastic high-molecular resin casting die head; the elastic membrane is led out by an elastic air-permeable casting die forming roller set so as to form an elastic air-permeable membrane of which the surface is provided with many ventilation holes; the elastic air-permeable membrane is subjected to S-shaped stretching by multiple pairs of elastic air-permeable membrane stretching roller sets, and then, the elastic air-permeable membrane as well as the bottom-layer non-woven fabric and the surface-layer non-woven fabric which are compounded on two sides of the elastic air-permeable membrane together enter a compound forming roller set so as to be compounded by hot compression, molded and led out; and then, with the resilience resetting of the elastic air-permeable membrane, the surface-layer non-woven fabric and the bottom-layer non-woven fabric which are positioned at two sides of the elastic air-permeable membrane form the elastic air-permeable crimped compound non-woven fabric.

Description

Technical field [0001] The invention relates to an elastic breathable crepe type composite non-woven fabric that can combine a surface layer non-woven fabric and a bottom non-woven fabric in a stretched state without hot melt glue or stretching non-woven fabric. Woven fabric production line and production method are mainly used for medical bandages and elastic waists of diapers, as well as sanitary napkin diapers veneers, belonging to the field of composite non-woven fabric manufacturing. Background technique [0002] CN202213263U, the name "a composite non-woven fabric", is composed of at least one layer of elastic non-woven fabric and at least one layer of elastic breathable film. The elastic breathable film is a polyurethane film. The elastic non-woven fabric and the elastic breathable film are compounded by an adhesive. The adhesive is hot melt adhesive. Both the elastic non-woven fabric and the elastic polyurethane breathable film are in a stretched state during the compo...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B37/00B32B37/10
CPCB32B37/0053B32B37/10B32B2307/306B32B2307/51B32B2307/724B32B2555/02
Inventor 杨明达
Owner 杨明达
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