Secondary mesh combined plastic punched film and method for making same

A combined, perforated film technology, applied in the field of perforated film, can solve problems such as functional and performance defects, achieve the effect of strong three-dimensional sense, enhanced air permeability and permeability, and improved elasticity

Inactive Publication Date: 2006-12-13
蔡子辛 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a secondary mesh combined plastic perforated film and its manufacturing method.

Method used

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  • Secondary mesh combined plastic punched film and method for making same
  • Secondary mesh combined plastic punched film and method for making same
  • Secondary mesh combined plastic punched film and method for making same

Examples

Experimental program
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Example Embodiment

[0038] Example 1: A secondary mesh combined plastic perforated film and its manufacturing method. A single-layer plastic film is used as a substrate and formed by a secondary perforation process. The first perforation is used to form a uniformly distributed small perforated net. , The second time punching and forming a uniformly distributed large-hole net. The aperture of the small mesh is 0.2mm, and the aperture of the large mesh is 0.5mm. The opening density of the small mesh is 230 holes / cm 2 , The hole density of the large mesh is 100 holes / cm 2 ; The opening rate of the small mesh is 30%, and the opening rate of the large mesh is 28%. The hole types of the small holes and the large holes are round (other geometric shapes are also possible).

[0039] by image 3 As shown, during production, PE particles and hydrophilic particles are mixed, extruded at high temperature through the casting machine 1, and the cast film 2 in the high-temperature molten state is discharged from the ...

Example Embodiment

[0040] Embodiment 2: A secondary mesh combined plastic perforated film and its manufacturing method. The single-layer plastic film is used as the base material and is formed by a secondary perforation process. The first perforation forms a uniformly distributed small perforated net. , The second time punching and forming a uniformly distributed large-hole net. The aperture of the small mesh is 0.1mm, and the aperture of the large mesh is 0.5mm. The opening density of the small mesh is 400 holes / cm 2 , The hole density of the large mesh is 130 holes / cm 2 ; The opening rate of the small mesh is 27%, and the opening rate of the large mesh is 31%. The hole types of the small holes and the large holes are both pentagonal (other geometric shapes are also possible).

[0041] by Figure 4 As shown, during production, the solid cast film 14 is sent out from the unwinding roll 6, and is mechanically punched by the steel rolls 15, 16 on the surface. The surface of the steel rolls 15, 16 is pr...

Example Embodiment

[0042] Embodiment 3: A secondary mesh combined plastic perforated film and its manufacturing method. A single-layer plastic film is used as the base material and formed by a secondary perforation process. The first time perforation forms a uniformly distributed small perforated net. , The second time punching and forming a uniformly distributed large-hole net. The aperture of the small mesh is 0.25 mm, and the aperture of the large mesh is 0.5 mm. The opening density of the small mesh is 200 holes / cm 2 , The hole density of the large mesh is 80 holes / cm 2 ; The opening rate of the small mesh is 20%, and the opening rate of the large mesh is 28%. The hole patterns of the small holes and the large holes are both hexagonal (other geometric shapes are also possible).

[0043] Production process: The first punching process in the first embodiment is combined with the second punching process in the second embodiment. Alternatively, it can be realized by combining the first punching proc...

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Abstract

The invention relates the twice mesh combined type plastic making hole film and preparing method. The method comprises the following steps: using mono-layer plastic foil as base material, carrying out twice mono-layer technology, forming the small hole in the first making holes technology, and forming big hole in the second making holes technology. The diameter of small hole is less than the half of the big hole, the perforated density of small hole is 170-500 holes/cm2, the perforated density of big hole is 30-150 holes/cm2; the perforated rate of small hole is 10-35%, and the perforated rate of big hole is 10-32%. The twice making hole uses vacuum making hole and mechanical making hole. The invention has the advantages of good air permeability, penetrability, softness and three-dimension effect.

Description

technical field [0001] The invention relates to a perforated film (i.e. sanitary fabric) for absorbing human exudates used in sanitary products such as women's sanitary napkins, sanitary pads, adult trousers, and baby diapers, and a production method thereof, in particular to a A single-layer plastic film is used as a base material, and a plastic perforated film with special effects is obtained by combining large meshes and small meshes through a secondary punching process and a manufacturing method thereof. Background technique [0002] Perforated film (also known as "sanitary fabric") is used as the basic fabric of sanitary products such as women's sanitary napkins, sanitary pads, adult trousers, baby diapers, etc. It is widely used in absorbent articles such as liners. Perforated film can be divided into composite perforated film and single-layer plastic perforated film according to material properties. Single-layer plastic perforated film is generally based on plastic f...

Claims

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Application Information

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IPC IPC(8): A61F13/512B29D28/00
Inventor 蔡子辛许原莱
Owner 蔡子辛
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