The present invention relates to the field of absorbent textiles, especially to a hot air through nonwoven fabric and the manufacturing method thereof.
Nonwoven fabric is widely used in the hygienic products, cleaning products and medical products, etc., like sanitary napkins, paper diapers, wipes and masks and so on. Existing nonwoven has the surface contacted with the skin of the user with convex-concave structure made by embossing process, this kind of structure can reduce the contact area with the skin of the wearer, so as to reduce adhesiveness feeling or mismatch. However, this kind of nonwoven is mostly applied hydrophilic fiber as the raw material, which is although benefit to absorb the liquid of the surface quickly, it has higher surface energy that the liquid is easily absorbed around the fiber, some liquid residuals between the fibers, at the same time, the capillary phenomenon of the fiber will make the absorbed liquid back to the surface of the nonwoven, the user would feel moist, stick and wet. Besides, the nonwoven is made to be the surface layer of the paper diapers for babies, as it has bad dry performance, it may result in hypersensitivity like reddening of skin and eczema.
The present invention provides a hot air through nonwoven to overcome the disadvantages of the existing known technology.
The technical proposal of the present invention is that:
A hot air through nonwoven, comprising a first fiber layer and a second fiber layer that are fixedly connected up and down; the contact angle of the first fiber layer and water is larger than 70.degree., the thickness of the first fiber layer is 0.2-2.0 mm, the first fiber layer has throughout holes, the area of the throughout holes has 10-80% of the total area of the first fiber layer; the contact angle of the second fiber layer and water is less than 70.degree.; the first fiber layer is used to distribute the liquid thereon to the second fiber layer, the second fiber layer is used to absorb the liquid from the first fiber layer.
In another preferred embodiment, the throughout holes are throughout holes of strip, circle, ellipse, polygon or other irregular shape and arranged with space, or protrusions of strip, circle, ellipse, polygon or other irregular shape.
In another preferred embodiment, the first fiber layer has two layers or more.
In another preferred embodiment, the fiber of the first fiber layer is sheath/core or eccentric bi-component fiber.
In another preferred embodiment, the second fiber layer has two layers or more.
In another preferred embodiment, the basis weight of the first fiber layer is 5-40 g/m2, the basis weight of the second fiber layer is 5-40 g/m2.
Another technical proposal of the present invention is that:
A manufacturing method of the hot air through nonwoven according to claim 1, comprising following steps:
(1) the fiber for the first fiber layer is carded by the carding machine to form the first fiber layer, the thickness of the first fiber layer is 0.2-2.0 mm, the basis weight is 5-40 g/m2;
(2) the first fiber layer is made throughout holes by perforating process, the area of the throughout holes is 10-80% of the total area of the first fiber layer, the throughout holes are throughout holes of strip, circle, ellipse, polygon or other irregular shape and arranged with space, or protrusions of strip, circle, ellipse, polygon or other irregular shape;
(3) the fiber for the second fiber layer is carded by the carding machine to form the second fiber layer, the basis weight is 5-40 g/m2;
(4) the obtained first fiber layer and the second fiber layer are overlaid and sent to a hot air through oven for heat bonding to form the hot air through nonwoven.
In another preferred embodiment, the first fiber layer has two layers or more.
In another preferred embodiment, the fiber of the first fiber layer is sheath/core or eccentric bi-component fiber.
In another preferred embodiment, the second fiber layer has two layers or more.
The present invention has advantages as follows:
1. The hot air through nonwoven of the present invention comprises a first fiber layer and a second fiber layer that are fixedly connected up and down; the contact angle of the first fiber layer and water is larger than 70.degree., the contact angle of the second fiber layer and water is less than 70.degree.; the first fiber layer has throughout holes, the area of the throughout holes has 10-80% of the total area of the first fiber layer; the throughout holes are throughout holes of strip, circle, ellipse, polygon or other irregular shape and arranged with space, or protrusions of strip, circle, ellipse, polygon or other irregular shape; when the body fluid reaches to the first fiber layer, which has low surface energy, it then flows to the second fiber layer through the throughout holes of the first fiber layer, so that it not only has distributing function, but also enlargers the diffusing area, thus increasing the effective use area of the absorbent product and improving the absorbent performance of the liquid; as the second fiber layer has higher surface energy, when the body fluid reaches to the second fiber layer, it is quickly absorbed into the layer; at the same time, as the contact angle of the first fiber layer and water is larger than 70.degree., it prevents the absorbed the body fluid from moving back to the surface of the absorbent product, achieving dry and comfortable effect; as the thickness of the first fiber layer is larger than 0.2 mm, even the body fluid effuses the second fiber layer, only the first fiber layer contacts with the skin of the user, the user would not feel wet.
2. The manufacturing method of the present invention is simple, it requests low to the equipment that it is applicable in industrial manufacture.
The present invention will be further described with the embodiments.
As figured in
The thickness of the first fiber layer 11 is 0.2-2.0 mm,
The basis weight of the first fiber layer is 5-40 g/m2, preferred 5-20 g/m2.
The basis weight of the second fiber layer is 5-40 g/m2, preferred 5-20 g/m2.
The manufacturing method of the hot air through nonwoven 1 of this embodiment comprises following steps:
(1) the fiber for the first fiber layer 11 is carded by the carding machine to form the first fiber layer 11;
(2) the first fiber layer 11 is made parallel strip protrusions by a perforating device;
(3) the fiber for the second fiber layer 12 is carded by the carding machine to form the second fiber layer 12;
(4) the obtained first fiber layer 11 and the second fiber layer 12 are overlaid and sent to a hot air through oven for heat bonding to form the hot air through nonwoven 1.
As figured in
The thickness of the first fiber layer 11 is 0.2-2.0 mm,
The basis weight of the first fiber layer is 5-40 g/m2, preferred 5-20 g/m2.
The basis weight of the second fiber layer is 5-40 g/m2, preferred 5-20 g/m2.
The manufacturing method of the hot air through nonwoven 1 of this embodiment comprises following steps:
(1) the fiber for the first fiber layer 11 is carded by the carding machine to form the first fiber layer 11;
(2) the first fiber layer 11 is made circle throughout holes 111 arranged with space by a perforating device;
(3) the fiber for the second fiber layer 12 is carded by the carding machine to form the second fiber layer 12;
(4) the obtained first fiber layer 11 and the second fiber layer 12 are overlaid and sent to a hot air through oven for heat bonding to form the hot air through nonwoven 1.
As figured in
The thickness of the first fiber layer 11 is 0.2-2.0 mm,
The basis weight of the first fiber layer is 5-40 g/m2, preferred 5-20 g/m2.
The basis weight of the second fiber layer is 5-40 g/m2, preferred 5-20 g/m2.
The manufacturing method of the hot air through nonwoven 1 of this embodiment comprises following steps:
(1) the fiber for the first fiber layer 11 is carded by the carding machine to form the first fiber layer 11;
(2) the first fiber layer 11 is made polygon protrusions arranged with space by a perforating device;
(3) the fiber for the second fiber layer 12 is carded by the carding machine to form the second fiber layer 12;
(4) the obtained first fiber layer 11 and the second fiber layer 12 are overlaid and sent to a hot air through oven for heat bonding to form the hot air through nonwoven 1.
As figured in
The thickness of the first fiber layer 11 is 0.2-2.0 mm,
The basis weight of the first fiber layer is 5-40 g/m2, preferred 5-20 g/m2.
The basis weight of the second fiber layer is 5-40 g/m2, preferred 5-20 g/m2.
The manufacturing method of the hot air through nonwoven 1 of this embodiment comprises following steps:
(1) the fiber for the first fiber layer 11 is carded by the carding machine to form the first fiber layer 11;
(2) the first fiber layer 11 is made short bar protrusions of irregular shaped arranged with space by a perforating device;
(3) the fiber for the second fiber layer 12 is carded by the carding machine to form the second fiber layer 12;
(4) the obtained first fiber layer 11 and the second fiber layer 12 are overlaid and sent to a hot air through oven for heat bonding to form the hot air through nonwoven 1.
As figured in
The thickness of the first fiber layer 11 is 0.2-2.0 mm,
The basis weight of the first fiber layer is 5-40 g/m2, preferred 5-20 g/m2.
The basis weight of the second fiber layer is 5-40 g/m2, preferred 5-20 g/m2.
The manufacturing method of the hot air through nonwoven 1 of this embodiment comprises following steps:
(1) the fiber for the first fiber layer 11 is carded by the carding machine to form the first fiber layer 11;
(2) the first fiber layer 11 is made circle, ellipse, polygon or irregular shape throughout holes 111 arranged with space by a perforating device;
(3) the fiber for the second fiber layer 12 is carded by the carding machine to form the second fiber layer 12;
(4) the obtained first fiber layer 11 and the second fiber layer 12 are overlaid and sent to a hot air through oven for heat bonding to form the hot air through nonwoven 1.
As figured in
The thickness of the first fiber layer 11 is 0.2-2.0 mm,
The basis weight of the first fiber layer is 5-40 g/m2, preferred 5-20 g/m2.
The basis weight of the second fiber layer is 5-40 g/m2, preferred 5-20 g/m2.
The manufacturing method of the hot air through nonwoven 1 of this embodiment comprises following steps:
(1) the fiber for the first fiber layer 11 is carded by the carding machine to form the first fiber layer 11;
(2) the first fiber layer 11 is made circle, ellipse, polygon or irregular shape throughout holes 111 arranged with space by a perforating device;
(3) the fiber for the second fiber layer 12 is carded by the carding machine to form the second fiber layer 12;
(4) the obtained first fiber layer 11 and the second fiber layer 12 are overlaid and sent to a hot air through oven for heat bonding to form the hot air through nonwoven 1.
Although the present invention has been described with reference to the preferred embodiments thereof for carrying out the patent for invention, it is apparent to those skilled in the art that a variety of modifications and changes may be made without departing from the scope of the patent for invention which is intended to be defined by the appended claims.
When the body fluid reaches the first fiber layer, which has low surface energy, it then flows to the second fiber layer through the through holes of the first fiber layer, so that it not only has a distributing function, but also enlarges the diffusing area, thus increasing the effective use area of the absorbent product and improving the absorbent performance on the liquid; as the second fiber layer has higher surface energy, so that when the body fluid reaches the second fiber layer, it is quickly absorbed into the layer.
Number | Date | Country | Kind |
---|---|---|---|
201310301601.1 | Jul 2013 | CN | national |
Filing Document | Filing Date | Country | Kind |
---|---|---|---|
PCT/CN2014/082288 | 7/16/2014 | WO | 00 |
Publishing Document | Publishing Date | Country | Kind |
---|---|---|---|
WO2015/007211 | 1/22/2015 | WO | A |
Number | Name | Date | Kind |
---|---|---|---|
4883707 | Newkirk | Nov 1989 | A |
5658639 | Curro | Aug 1997 | A |
5752945 | Mosley | May 1998 | A |
5989688 | Barge | Nov 1999 | A |
6168849 | Braverman | Jan 2001 | B1 |
6461716 | Lee | Oct 2002 | B1 |
7005558 | Johansson | Feb 2006 | B1 |
7507463 | Noda | Mar 2009 | B2 |
20020107495 | Chen | Aug 2002 | A1 |
20040087924 | Sroda | May 2004 | A1 |
20070015428 | Ishikawa | Jan 2007 | A1 |
20090247977 | Takeuchi | Oct 2009 | A1 |
Number | Date | Country |
---|---|---|
1681986 | Oct 2005 | CN |
1723120 | Jan 2006 | CN |
101554487 | Oct 2009 | CN |
102257201 | Nov 2011 | CN |
102673030 | Sep 2012 | CN |
102753129 | Oct 2012 | CN |
202637294 | Jan 2013 | CN |
103422256 | Dec 2013 | CN |
203393410 | Jan 2014 | CN |
2005-324010 | Nov 2005 | JP |
2009279097 | Dec 2009 | JP |
2009279098 | Dec 2009 | JP |
2011135979 | Jul 2011 | JP |
2012005744 | Jan 2012 | JP |
2012143543 | Aug 2012 | JP |
WO-2010032951 | Mar 2010 | WO |
2010074207 | Jul 2010 | WO |
Entry |
---|
First Chinese Office Action cited in Application No. 201310301601.1 dated Mar. 30, 2015, 13 pgs. |
Second Chinese Office Action cited in Application No. 201310301601.1 dated Nov. 18, 2015, 15 pgs. |
First Japanese Office Action cited in Application No. 2016-526432 dated Feb. 7, 2017, 10 pgs. |
Second Japanese Office Action cited in Application No. 2016-526432 dated Sep. 12, 2017, 10 pgs. |
Third Japanese Office Action cited in Application No. 2016-526432 dated Jun. 12, 2018, 7 pgs. |
First Korean Office Action cited in Application No. 10-2016-7001803 dated Sep. 15, 2017, 13 pgs. |
Second Korean Office Action cited in Application No. 10-2016-7001803 dated Jan. 31, 2018, 6 pgs. |
Third Korean Office Action cited in Application No. 10-2016-7001803 dated May 2, 2018, 11 pgs. |
Number | Date | Country | |
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20160153128 A1 | Jun 2016 | US |