Nonwoven fabric

Inactive Publication Date: 2007-12-27
UNI CHARM CORP
View PDF64 Cites 65 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0033]Accordingly, the present invention is capable of providing the nonwoven fabrics provided with the concave/convex portions, and the openings, which can be adjusted to densify only a partial area of the peripheral edges of the openings, wi

Problems solved by technology

However, these methods merely confound the fibers together at the most, and are not intended for adjusting the orientation and arrangement of the fibers in the fiber layer, and the shape of the fiber layer.
However, in this nonwoven fabric, a fiber aggregate constituting the nonwoven fabric is sandwiched between the protruding portions and the base material on the receiving side, resulting in concave portions, convex portions, and openings.
Therefore, the nonwoven fabrics of related art have the problem that, for example, the fibers in the wall portion of the convex portions and in the entire pe

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Nonwoven fabric
  • Nonwoven fabric
  • Nonwoven fabric

Examples

Experimental program
Comparison scheme
Effect test

Example

2. First Embodiment

[0050]A first embodiment in the nonwoven fabric of the present invention will be described with reference to FIG. 1A to 4.

[0051]In the following, groove portions 1a and 1b are examples of a groove portion 1, as shown in FIGS. 1A and 1B and FIG. 2. Raised ridge portions 2a and 2b are examples of a raised ridge portion 2 as a convex portion. A Second opening 3b adjacent to a predetermined first opening 3a in the longitudinal direction (LD) being the machine direction (hereinafter in some cases, the first openings 3a and 3b are referred to simply as the openings 3a and 3b) are examples of a plurality of openings 3.

1-1. Shape

[0052]As shown in FIGS. 1A, 1B, or FIG. 2, a nonwoven fabric 116 in the first embodiment is a nonwoven fabric where the groove portions 1a and 1b are used as a unit, and a plurality of units are arranged side by side. The groove portions 1a and 1b are examples of a groove portion 1 as a concave portion. That is, the nonwoven fabric 116 has on one ...

Example

3-1. Second Embodiment

[0143]The second embodiment in the nonwoven fabric of the present invention will be described with reference to FIGS. 9A and 9B and FIG. 10.

3-1-1. Nonwoven Fabric

[0144]As shown in FIGS. 9A, 9B, and 10, a nonwoven fabric 140 in the second embodiment is different from the first embodiment in having a second connecting part 4b formed between a third opening 3c adjacent to a first opening 3a on the opposite side of a second opening 3b adjacent to a first opening 3a. The nonwoven fabric 140 is also different from the first embodiment in that one side edge portion 16 in the second opening 3b, a first connecting part 4a, one side edge portion 14 in the opening 3a, the second connecting part 4b, the third opening 3c, and one side edge portion 18 in the third opening 3c are continued in a zigzag pattern. The nonwoven fabric 140 is identical with the first embodiment in groove portions 1a and 1b, the raised ridge portions 2a and 2b, the openings 3a and 3b, one side edge ...

Example

[0158]The third embodiment in the nonwoven fabric of the present invention will be described below with reference to FIGS. 11A and 11B.

3-2-1. Nonwoven Fabric

[0159]As shown in FIGS. 11A and 11B, a nonwoven fabric 150 of the third embodiment is different from the first embodiment in that in the other side, the areas corresponding to raised ridge portions 2a and 2b protrude in the same direction as the direction in which the raised ridge portions 2a and 2b protrude. The nonwoven fabric 150 is also different in that a plurality of protruding portions 10 are formed in the other side. The nonwoven fabric 150 is identical to the foregoing embodiment in groove portions 1a and 1b, the raised ridge portions 2a and 2b, openings 3a, 3b, and 3c, one side edge portions 14, 16, and 18 in the openings 3a, 3b, and 3c, the second side edge portions 15, 17, and 19 in the openings 3a, 3b, and 3c, first connecting parts 4a, second connecting parts 4b, as well as the fiber orientation, the dense and nond...

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
Login to view more

PUM

PropertyMeasurementUnit
Densityaaaaaaaaaa
Densityaaaaaaaaaa
Weightaaaaaaaaaa
Login to view more

Abstract

A nonwoven fabric provided with concave/convex portions, and openings, which can be adjusted to densify only a part of the peripheral edges of the openings, without excessively increasing the fiber density in the convex portions and the concave portions. A fiber web can be moved to an area where the down-slanting wires of woven wire extending in the direction of width (WD), thereby forming a first side edge portion in the openings. The fiber web is hardly displaced to the opposite side edges of the first side edges, namely a second side edge portions.

Description

[0001]This application is based on and claims the benefit of priority from Japanese Patent Application No. 2006-174505, filed on 23 Jun. 2006 and Japanese Patent Application No. 2006-270111, filed on 29 Sep. 2006, the contents of which are incorporated herein by reference.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The present invention relates to a nonwoven fabric and a nonwoven fabric manufacturing method.[0004]2. Related Art[0005]Conventionally, nonwoven fabrics have been used in a wide variety of fields, for example, sanitary goods such as paper diapers and sanitary napkins, cleaning goods such as wipers, and medical goods such as masks. Thus, the nonwoven fabrics can be used in various different fields, and when they are actually used in the products of the respective fields, it is necessary to be manufactured so as to have suitable characteristics and structure for the applications of the products, respectively.[0006]The nonwoven fabrics can be manufactured...

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
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): D04H1/00A61F13/15A61F13/49A61F13/511D04H1/70D04H1/732D04H1/76
CPCD04H1/72D04H1/465D04H1/495Y10T442/184D04H1/70D04H1/76
Inventor NODA, YUKIISHIKAWA, HIDEYUKIMIZUTANI, SATOSHITANI, KOICHIROKIMURA, AKIHIRO
Owner UNI CHARM CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap