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Porous film, forming device thereof and application of porous film

A technology of porous film and forming device, which is applied in the field of sanitary products and can solve problems such as body fluid rewet

Pending Publication Date: 2018-05-08
XIAMEN YANJAN NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the thickness of the forming screen formed by electroplating is at most about 0.6-0.7mm, so the thickness of the porous film is generally 0.3-0.5mm, which is relatively low, which may cause body fluids to seep back into the absorbent surface layer

Method used

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  • Porous film, forming device thereof and application of porous film
  • Porous film, forming device thereof and application of porous film
  • Porous film, forming device thereof and application of porous film

Examples

Experimental program
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Effect test

Embodiment 1

[0064] Such as figure 2 and image 3 As shown, the thickness of the porous film 2a is 0.8mm, the porous film 2a has circular depressions 21a distributed continuously through its surface layer and bottom layer, and a circular small hole 22a is embedded in the bottom of each depression, so The opening surface area of ​​the small hole 22a is greater than the bottom area of ​​the opening, the thickness of the depression 21a is twice the thickness of the small hole 22a, the equivalent diameter of the upper surface of the depression 21a is 1.5mm, and the equivalent diameter of the upper surface of the small hole 22a The diameter is 0.5 mm, the porosity of the upper surface of the depression 21a is 35%, the porosity of the small hole 22a is 15%, the equivalent diameter of the bottom of the depression 21a is greater than the equivalent diameter of the upper surface of the small hole 22a, the The gap between adjacent depressions 21a on the porous film 2a is 2 mm.

[0065] Such as ...

Embodiment 2

[0068] Such as Figure 5 and Figure 6 As shown, the thickness of the porous film 2b is 1.5mm, and the porous film 2b has hexagonal depressions 21b continuously distributed through its surface layer and bottom layer, and four circular small holes 22b are nested at the bottom of the depressions 21b. The opening surface area of ​​the small hole 22b is greater than the bottom area of ​​the opening, and the thickness of the depression 21b is 1.2 times the thickness of the small hole 22b. The equivalent diameter of the upper surface of the depression 21b is 2.5mm, and the upper surface of the small hole 22b The surface equivalent diameter is 0.8mm, the porosity of the depression 21b is 58%, the porosity of the small hole 22b is 20%, the equivalent diameter of the bottom of the depression 21b is larger than the upper surface equivalent diameter of the small hole 22b, the The gap between adjacent depressions on the porous film 2b was 0.8 mm.

[0069] Such as Figure 7 shown, for a...

Embodiment 3

[0072] Such as Figure 8 and Figure 9 As shown, the thickness of the porous film 2c is 1.6mm, and the porous film 2c has hexagonal depressions 21c distributed continuously through its surface layer and bottom layer, and a hexagonal small hole 22c is nested at the bottom of the depression 21c, The opening surface area of ​​the small hole 22c is greater than the bottom area of ​​the opening, and the thickness of the depression 21c is 1.0 times the thickness of the small hole 22c, and the equivalent diameter of the bottom of the depression 21c is equal to the equivalent diameter of the upper surface of the small hole 22c, The equivalent diameter of the upper surface of the depression 21c is 2.5mm, the equivalent diameter of the upper surface of the small hole 22c is 2.0mm, the porosity of the depression 21c is 58%, and the porosity of the small hole 22c is 30%. The gap between adjacent depressions on the porous film 2c is 0.8 mm.

[0073] Such as Figure 10 shown, for a manuf...

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Abstract

The invention discloses a porous film, a forming device thereof and application of the porous film. The thickness of the porous film is larger than or equal to 0.8 mm, pits penetrate through the surface layer or bottom layer of the porous film and are distributed continuously, at least one small hole is embedded in the bottom of each pit, and the porous film is applied to one flow guide layer of one absorbing product and manufactured through the integrated seamless columnar netting gear forming device. The thickness of the porous film and the equivalent diameter of the pits are large, when theporous film is used in the flow guide layer of the hygienic product, body fluid can be temporarily stored in the pits and permeate into an absorbing layer through holes in the bottom, and it is effectively prevented that a great deal of body fluid instantaneously reach the absorbing product, the hygienic product does not absorb the body fluid to cause body fluid rear and lateral leakage.

Description

technical field [0001] The invention relates to the field of hygienic products, in particular to a porous film, its forming device and the application of the porous film. Background technique [0002] Due to the characteristics of fast penetration and dryness, porous films are often used in absorbent products as surface layers and flow-guiding layers. When the porous film is used as the diversion layer of the absorbent product, the body fluid will pass through the surface layer to reach the porous film, and the porous film will temporarily store the body fluid and expand the permeable area. [0003] Application No. 201010249819.3 discloses a three-dimensional porous film for a flow diversion layer, which has a continuous surface and a discontinuous surface generally placed parallel to the continuous surface and spaced apart from the continuous surface, the continuous surface and the discontinuous surface The surfaces each have a rear large-sized opening defined by sidewalls...

Claims

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Application Information

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IPC IPC(8): A61F13/15B32B3/24B32B3/30B32B33/00
CPCA61F13/15577B32B3/266B32B3/30B32B33/00B32B2307/726B32B2555/02A61F2013/15284
Inventor 李世煌肖德全
Owner XIAMEN YANJAN NEW MATERIAL CO LTD
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