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Foam finishing agent and finishing method for sms nonwoven fabric

A technology for foam finishing and non-woven fabrics, applied in the field of foam finishing agent and finishing of SMS non-woven fabrics, can solve the problems of uneven spraying, poor wettability, and poor air permeability in surface spraying treatment, and achieve good application prospects, The effect of reducing elongation at break and air permeability and reducing consumption

Active Publication Date: 2020-02-07
HENAN INST OF ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Padding finishing, coating, and surface spraying treatment are commonly used methods at present. However, due to the poor wettability of SMS nonwoven fabric itself, padding finishing is easy to cause stiff hand feeling, resulting in salting out, and surface spraying treatment is easy to spray unevenly. Coating affects the feel and has poor air permeability

Method used

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  • Foam finishing agent and finishing method for sms nonwoven fabric
  • Foam finishing agent and finishing method for sms nonwoven fabric
  • Foam finishing agent and finishing method for sms nonwoven fabric

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Example 1: A foam finishing method for SMS nonwovens

[0028] The finishing steps and process conditions are as follows:

[0029] (1) Preparation of finishing solution: take Transoft 4917 softener 10 g / L, sodium carboxymethyl cellulose 15 g / L, sodium lauryl sulfate 15 g / L, foaming agent, softener and stabilizer dissolve in water;

[0030] (2) Stirring and foaming: Stir the solution obtained in step (1) at 25°C for 5 minutes;

[0031] (3) Finishing: apply the foaming finishing solution obtained in step (2) to the SMS nonwoven fabric by padding for soft and hydrophilic finishing, wherein the bath ratio is 1:30;

[0032] (4) Drying: Dry the SMS non-woven fabric after step (3) at 80°C for 3 minutes;

[0033] (5) Baking: The SMS nonwoven fabric dried in step (4) was baked at 130°C for 2 minutes to complete the foam finishing of the SMS nonwoven fabric.

Embodiment 2

[0034] Embodiment two: foaming process verification of the present invention

[0035] 1. Determination of foaming temperature

[0036] Studies have shown that temperature has a great influence on foaming. When other conditions remain unchanged, the solution containing foaming agent and soft hydrophilic agent configured in the pre-experiment is mechanically foamed. The foaming temperature has a great influence on the foaming effect. The influence of the system performance is shown in Table 1:

[0037] Table 1 Effect of temperature on foam properties

[0038]

[0039] It can be seen from Table 1 that the foaming temperature reaches the highest value of 20-25°C, which has good foaming performance, and the viscosity of the solution decreases as the foaming temperature increases. When the temperature is too low, the foam activity is not strong, the thermal movement between molecules is weakened, and the foaming effect is not good. When the temperature is too high, the viscosit...

Embodiment 3

[0060] Example 3: Hydrophilic soft foam finishing single factor verification test

[0061] 1. Determination of softener concentration

[0062] Prepare the softener into finishing liquids with different concentrations, put the samples to be finished into it, pad and pad for finishing, two dips and two pads, the bath ratio is 1:40, the excess padding rate is 106%, and then pre-baked at a temperature of 80°C 3min, and then baked at 110°C for 2min. After finishing the fabric with different concentrations of finishing solution, the water absorption rate of the sample was measured, and the measurement results are shown in Table 6 below:

[0063] Table 6 Water absorption of samples after finishing with different softener concentrations

[0064]

[0065] It can be concluded from Table 6 that with the continuous increase of the concentration of Transoft 4917 functional softener, the water absorption of the samples after finishing first gradually increased and then showed a stable ...

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Abstract

The invention discloses a foam finishing agent for SMS nonwovens and application thereof, and can endow finished nonwovens with good soft and hydrophilic effects. The foam finishing agent uses water as the solvent, and is composed of the following concentration components: a 8-25g / L softener, a 5-35g / L stabilizer, and a 8-100g / L foaming agent. The finishing agent can be applied to SMS nonwovens, and by means of stirring foaming, finishing, drying and baking, foam finishing of SMS nonwovens can be finished. The method provided by the invention can endow finished SMS nonwovens with good soft andhydrophilic effects, can lower water consumption in the dyeing and finishing process and pick-up ratio of fabrics, is an energy saving and environment-friendly low-liquid feeding processing technology, and can maintain high production efficiency, causes little reduction on the breaking strength, elongation at break and breathability decrease of the product, does not affect the product use, and has good application prospect.

Description

technical field [0001] The invention relates to the technical field of nonwoven fabric processing and manufacturing, in particular to a foam finishing agent for SMS nonwoven fabric and a finishing method. Background technique [0002] At present, my country's baby diaper market is in a period of rapid growth. The improvement of people's living standards, the increasingly reasonable price of diapers and the general recognition of the role of diapers have become sufficient conditions for its rapid development. The top layer of diapers needs to be soft and breathable, but also to allow urine to penetrate quickly, and to keep the skin-friendly surface dry. SMS nonwoven fabric is suitable for the surface layer of diapers due to its high strength, low rewet property, and good uniformity. However, ordinary SMS nonwovens cannot fully meet the requirements of the surface layer of diapers in terms of softness and rapid urine penetration, and need to be softened. [0003] Nonwoven fi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M23/04D06M15/09D06M13/262D06M15/643D06M101/20
CPCD06M13/262D06M15/09D06M15/643D06M23/04D06M2101/20D06M2200/50
Inventor 盛杰侦马会芳辛长征张梅建陈志远张慧毛慧贤代文月
Owner HENAN INST OF ENG
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