Degradable composite absorption core, preparation method thereof and application thereof in paper diapers

A technology of absorbent core and composite polylactic acid, which is applied in the fields of application, absorbent pad, medical science, etc., can solve the problems of low degradability of diapers and unrealizable degradation design of absorbent core, and achieve good skin-friendly effect

Active Publication Date: 2020-11-13
JIAXING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The preparation methods of degradable diapers provided by the prior art are all designed for degradation of the surface layer of the non-woven fabric and the bottom impermeable film of the diaper, but the degradation design of the absorbent core cannot be realized, because the mass ratio of the absorbent core in the diaper is usually Reaches 2 / 3, so the degradability of existing diapers is low

Method used

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  • Degradable composite absorption core, preparation method thereof and application thereof in paper diapers

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preparation example Construction

[0034] figure 1 It is a method flowchart of a method for preparing a degradable composite absorbent core shown according to an exemplary embodiment, such as figure 1 Shown, the preparation method of this degradable composite absorbent core comprises:

[0035] Step (1): Choose a three-dimensional crimped polylactic acid fiber with a length × fineness of 60-68mm × 13-17D, a number of crimps of 16-20 pieces / 25mm, and a crimp of 13-18%, and a length × fineness of 60 -68mm×6.28-6.83dtex, PLA / PLA bicomponent fibers with a crimp number of 5-9 pieces / 25mm are used to prepare a semi-finished composite polylactic acid fiber web.

[0036] Preferably, the preparation method of the semi-finished composite polylactic acid fiber web comprises:

[0037] (a) After the three-dimensional crimped polylactic acid fiber and the PLA / PLA bicomponent fiber were subjected to hydrophilic softening treatment by spraying method, they were left to stand at room temperature for 24 hours to make the three-...

Embodiment 1

[0054] Step (1): Choose a three-dimensional crimped polylactic acid fiber with a length×fineness of 60mm×13D, a number of crimps of 16 pieces / 25mm, and a crimp of 13%, and a length×fineness of 60mm×6.28dtex, and a number of crimps of 5 The PLA / PLA two-component fiber of each 25mm prepares composite polylactic acid fiber web semi-finished product jointly, and the preparation method of described composite polylactic acid fiber web semi-finished product comprises:

[0055](a) After the three-dimensional crimped polylactic acid fiber and the PLA / PLA bicomponent fiber were subjected to hydrophilic softening treatment by spraying method, they were left to stand at room temperature for 24 hours to make the three-dimensional crimped polylactic acid fiber and the PLA / PLA bicomponent fiber The content of the hydrophilic softening oil agent on the surface of the PLA / PLA two-component fiber is 1-2.2%, and the mass ratio of each component of the hydrophilic softening oil agent is hydrophili...

Embodiment 2

[0069] Step (1): Choose a three-dimensional crimped polylactic acid fiber with a length×fineness of 64mm×13-17D, a number of crimps of 18 pieces / 25mm, and a crimp of 15%, and a length×fineness of 64mm×6.67dtex, a number of crimps For the PLA / PLA two-component fiber of 7 / 25mm prepares composite polylactic acid fiber web semi-finished product jointly, the preparation method of described composite polylactic acid fiber web semi-finished product comprises:

[0070] (a) After the three-dimensional crimped polylactic acid fiber and the PLA / PLA bicomponent fiber were subjected to hydrophilic softening treatment by spraying method, they were left to stand at room temperature for 24 hours to make the three-dimensional crimped polylactic acid fiber and the PLA / PLA bicomponent fiber The content of the hydrophilic softening oil agent on the surface of the PLA / PLA two-component fiber is 2.3-3.5%, and the mass ratio of each component of the hydrophilic softening oil agent is hydrophilic agen...

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Abstract

The invention discloses a degradable composite absorption core, a preparation method thereof and application of the degradable composite absorption core in paper diapers, and relates to the technicalfield of disposable hygienic products. The preparation method of the degradable composite absorption core comprises the following steps: preparing a composite polylactic acid fiber net, forming a polylactic acid superfine fiber net, compounding the polylactic acid fiber net, uniformly spraying super absorbent resin, uniformly distributing the super absorbent resin on the composite polylactic acidfiber net under the action of ultrasonic vibration, and the like. The super absorbent resin is prevented from being thermally damaged by adopting a method of firstly thermally reinforcing and then spraying the super absorbent resin, and the prepared composite absorbent core has a large number of pores, so that the utilization rate of the super absorbent resin is improved; the fiber layers of the composite absorption core are solidified into a whole through PLA/PLA fiber hot melting and polylactic acid superfine fiber self-adhesion, integrated processing of the fiber layers in the composite absorption core is achieved without using a non-degradable hot melt adhesive, and therefore the composite absorption core has high degradability and excellent product comprehensive performance.

Description

technical field [0001] The invention relates to the technical field of disposable sanitary products, in particular to a degradable composite absorbent core, a preparation method thereof and an application in diapers. Background technique [0002] According to statistics, about 20,000 used diapers are discarded every minute in the United States; in the United Kingdom, as many as three billion diapers are discarded every year, generating about 1 million tons of garbage. The world discards diapers, nursing pads and other garbage every year As many as 20 million tons. In my country, the annual output of sanitary napkins is more than 70 billion pieces, and the number of paper diapers is more than 12 billion pieces. The consumption of nursing pads has reached more than 3.8 billion pieces per year, and the annual production of this kind of large and fluffy "white" garbage exceeds 3.5 million tons. And this number is increasing year by year with the acceleration of the aging process...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F13/15A61F13/496A61F13/53
CPCA61F13/15658A61F13/496A61F13/53A61F2013/15878A61F2013/530182A61F2013/530379A61F2013/530496
Inventor 钱程方瑞峰韩万里
Owner JIAXING UNIV
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