Anti-side leakage degradable polylactic acid sanitary napkin and preparation method thereof

A technology of polylactic acid and sanitary napkins, which is applied in the field of hygiene, can solve problems such as narrow user groups, complex production processes, and single functions, and achieve the effects of good stretchability, good moisture conductivity, and consistent bacterial growth

Active Publication Date: 2014-10-15
马鞍山同杰良生物材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] It can be seen from the above data that the existing degradable sanitary napkins or sanitary pads have the characteristics of complex production process, difficulty in realizing the national standard that the sanitary napkin's water absorption rate must be greater than 7 times, and single function. The market and user groups are narrow, and there are certain restrictions on popularization and application

Method used

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  • Anti-side leakage degradable polylactic acid sanitary napkin and preparation method thereof
  • Anti-side leakage degradable polylactic acid sanitary napkin and preparation method thereof
  • Anti-side leakage degradable polylactic acid sanitary napkin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] like figure 1 , a kind of anti-side leakage sanitary napkin proposed by the present invention comprises a surface layer non-woven fabric and a bottom anti-seepage film arranged from the inside to the outside, the surface layer non-woven fabric is a three-piece structure, and the surface layer non-woven fabric 1 of the middle sheet is connected with The surface layer non-woven fabrics 2 of the two wings are bonded together, and the surface layer non-woven fabrics are polylactic acid fiber non-woven fabrics; the middle sheet surface layer non-woven fabrics and the bottom impermeable membrane are filled with wood pulp fibers wrapped by toilet paper to absorb core body.

[0044]Wherein, the thickness of the surface non-woven fabric 1 of the middle sheet is 0.08mm. The thickness of the surface layer non-woven fabric 2 of the two wings is 0.15mm. The bottom impermeable membrane is PLA / PHA membrane with a thickness of 25 μm.

[0045] The sanitary napkin preparation process ...

Embodiment 2

[0053] 1) Preparation of polylactic acid surface layer non-woven fabric:

[0054] Use PLA anti-seepage bottom film, the weight is 40g / m 2 , thickness 45μm; use 100% polylactic acid fiber with a length of 51mm and a fineness of 13.3dtex to make a surface non-woven fabric through antistatic pretreatment, opening, mixing, carding and hot-melt reinforcement, of which: first Spray 4% antistatic agent to control the moisture regain of the fiber to 8%; secondly, when carding the fiber, pay attention to controlling the carding speed of the roller carding machine to reduce the damage to the polylactic acid fiber, and adjust the cylinder speed to 1100 m / min , the speed of the working roll is 70 m / min, the speed of the upper stripping roll is 30 m / min, the speed of the lower stripping roll is 40 m / min, the speed of the upper condensing roll is 58 m / min, and the speed of the lower condensing roll is 45 m / min. The upper doffer speed is 72 m / min, the lower doffer speed is 70 m / min, and the...

Embodiment 3

[0060] 1) Preparation of polylactic acid surface layer non-woven fabric:

[0061] Use PLA / PBS anti-seepage bottom film, the weight is 30g / m 2 , thickness 35μm; use PLA / PHBV fiber length 51mm, polylactic acid fiber with a fineness of 2.2dtex, through antistatic pretreatment, opening, mixing, carding and hot-melt reinforcement to make surface non-woven fabric, wherein: first spray 4% antistatic agent, control the moisture regain of the fiber to 6%; secondly, when carding the fiber, pay attention to controlling the carding speed of the roller carding machine to reduce the damage to the polylactic acid fiber, adjust the cylinder speed to 1150 m / min, The working roll speed is 75 m / min, the upper stripping roll speed is 35 m / min, the lower stripping roll speed is 42 m / min, the upper condensing roll speed is 63 m / min, the lower condensing roll speed is 52 m / min, the upper The doffer speed is 78 m / min, the lower doffer speed is 79 m / min, and the production speed is 55 m / min; the two-...

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Abstract

The invention provides an anti-side leakage sanitary napkin, which includes a surface non-woven fabric and a bottom impermeable membrane disposed from the inside out. The surface non-woven fabric has a three-piece structure, the intermediate piece of surface non-woven fabric and the two-wing surface non-woven fabrics are sticked together, and the space between the intermediate piece of surface non-woven fabric and the bottom impermeable membrane is filled with a toilet paper coated wood pulp cellulose absorption core. The surface of the sanitary napkin provided by the invention is composed of 100% polylactic acid fiber or PLA/PBHV fiber hot blast nonwoven fabric. The polylactic acid fiber retains the original characteristics and does not cause any damage. As polylactic acid is formed by polymerization of lactic acid molecules as monomers and spinning, polylactic acid molecules with short molecular chains possibly exist on the fiber surface, so that the pH value of a polylactic acid non-woven fabric surface shows weak acidity and is consistent with that of human body skin. Also an odor removal function is provided. The lateral two pieces of non-woven fabrics have greater gram weight and thickness than the intermediate piece, and side leakage cannot be caused.

Description

technical field [0001] The invention belongs to the field of hygiene, and in particular relates to a side leakage-proof sanitary napkin. Background technique [0002] Statistics show that the current female population in the world is about 3.5 billion, and about 2 billion women need to use sanitary napkins. From the perspective of a single woman, a woman has to go through 60 days of menstrual periods a year, and needs about 480 sanitary napkins a year. Calculated based on the weight of a sanitary napkin of 10 grams, so 2 billion women will produce about 9.6 million tons a year Due to the relatively large volume of these "white garbage", the landfill treatment according to the current treatment method needs to consume a large amount of landfill, and there have been serious problems related to human occupation of cultivated land and erosion of human living environment. It is very necessary to produce and use degradable sanitary napkins, change the materials used in existing p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61L15/26A61L15/40A61L15/42A61F13/53A61F13/475D06M15/643D06M13/50D06M101/32
Inventor 钱程许克强陈瑞锋吴骄
Owner 马鞍山同杰良生物材料有限公司
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