METHOD OF TREATING A ONE-SIDE WELL-VENTILATED FABRIC FOR WATER REPELLENCE AND HYGROSCOPICITY

• US 20090169746A1
• Filed: 12/31/2007
• Published: 07/02/2009
• Est. Priority Date: 12/31/2007
• Status: Abandoned Application

• Current Assignee: His-Tan Chen
• Original Assignee: His-Tan Chen
• Inventors: CHEN, His-Tan
• Application Number:
  US11/967,367
• Publication Number:
  US 20090169746A1
• Time in Patent Office: Days
• US Class Current: 427/256
• CPC Class Codes: D06N 2209/123 Breathable
• CPC Class Codes: D06N 2209/128 Non-permeable
• CPC Class Codes: D06N 2211/10 Clothing
• CPC Class Codes: D06N 3/0006 using woven fabrics
• CPC Class Codes: D06N 3/0009 using knitted fabrics
• CPC Class Codes: D06N 7/00 Flexible sheet materials not otherwise provided for, e.g. textile threads, filaments, yarns or tow, glued on macromolecular material paper-based or board-based structures for surface covering D21H27/20

Abstract

A method of treating a one-side well-ventilated fabric for water repellence and hygroscopicity is provided, water, a water repellence agent, a bridging agent, and an adhesive into an even compound extender being stirred and mixed into an even compound extender, the compound extender being poured by a material discharge device onto a surface of the fabric, and the compound extender that is controlled by a material removal device being evenly coated onto a surface of the fabric in a thickness. The compound extender is definitely adhesive and low in fluidity to control a portion of the fiber yarn of the surface of fabric the extender that permeates; one surface is formed with a water repellence layer and the other surface is formed with a hygroscopic layer for ventilation.

Claims

1. A method of treating a one-side well-ventilated fabric for water repellence and hygroscopicity, comprising steps of:

1. choosing a fabric being knit with a predetermined fiber yarn and being well ventilated and hygroscopic;

2. stirring predetermined proportional water, water repellence agent, bridging agent, and adhesive at an indoor temperature and evenly mixing them into a compound extender of predetermined viscosity;

3. delivering the fabric to a lower site of the material discharge device provided with an accommodation space for the compound extender, in which a plurality of material discharge holes are formed at a bottom of the accommodation space for the compound extender to pass through and to be poured onto a surface of the fabric;

4. arranging a material removal device at the rear of material discharge device, in which when the fabric passes, a redundant portion of the compound extender may be removed by the material removal device and the extender of a predetermined thickness may be reserved and coated on the surface of fabric;

5. delivering the fabric to a drying device, in which the moisture contained in the compound extender is evaporated and removed so that the water repellence agent permeates and is bonded with a portion of the fiber yarn of the surface of fabric;

thus, one surface formed with a water repellence layer being given and the other surface formed with a hygroscopic layer being given.

2. The method of treating the one-side well-ventilated fabric for water repellence and hygroscopicity according to claim 1, wherein the proportional compound extender comprises an adhesive of 1%-6% weight, a water repellence agent of 1%-14% weight, a bridging agent of 0.5%-1% weight, and rest of water are mixed into a raw material in a 100% weight ratio;

the lower the knit density of fabric is, the higher the mixing proportion of adhesive is so that the viscosity of compound extender increases and lies between 6000 and 25000 cps and the mixing time lasts for around 2 through 4 minutes, in which a W/O Inverse Acryl Hight Copolymer Emulsion is used for the adhesive, a high-performance fluorine compound contained in 3M Scotchgard™

protective agent PM-3630 is used for the water repellence agent, and a compound emulsified dispersant of Blocked Isocyanate is used for the bridging agent.

3. The method of treating the one-side well-ventilated fabric for water repellence and hygroscopicity according to claim 1, wherein a blowing agent is added to and evenly mixed with the compound extender, the compound extender of 1-5 times of foaming rate is thereby achieved, and the higher the magnification of foaming is, the less the ratio of adhesive comparatively is in a range of 1-3%;

the content that is reduced in a ratio is replaced by the blowing agent.

4. The method of treating the one-side well-ventilated fabric for water repellence and hygroscopicity according to claim 1, wherein a knifepoint is formed at a bottom of the material removal device, and a gap of 0-50 μ

m is formed between the knifepoint and the fabric surface to control the compound extender being coated on the surface of fabric in a thickness.

5. The method of treating the one-side well-ventilated fabric for water repellence and hygroscopicity according to claim 1, wherein a fabric drying temperature is set between 110°

C. and 190°

C. and a drying time is set between 30 seconds and 10 minutes.

6. The method of treating the one-side well-ventilated fabric for water repellence and hygroscopicity according to claim 1, wherein the fabric is well ventilated and hygroscopic.

7. The method of treating the one-side well-ventilated fabric for water repellence and hygroscopicity according to claim 1, wherein the thickness of fabric is between 0.3 mm and 2.0 mm and the fabric is knit in a density of 22×

22-38×

38/square inch.

8. The method of treating the one-side well-ventilated fabric for water repellence and hygroscopicity according to claim 1, wherein the thickness of fabric is 0.4 mm, the thickness of water repellence layer permeating and being bonded with the fiber yarn of the surface of fabric is between around 0.1 and 0.3 mm, and the thickness of hygroscopic layer is between around 0.3 and 0.1 mm.

9. The method of treating the one-side well-ventilated fabric for water repellence and hygroscopicity according to claim 1, wherein before the fabric is processed for water repellence, it is processed for hygroscopicity, in which the fabric is immersed in a hygroscopic agent and dried for a pattern for achievement of high hygroscopicity in the fabric.

10. The method of treating the one-side well-ventilated fabric for water repellence and hygroscopicity according to claim 1, wherein the fabric is a fatting fabric, a woven fabric, a mesh fabric, or a bird'"'"'s-eye fabric for processing.