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Single filament end portion chemical rounding method, brush filament manufacturing method and brush filament manufactured thereof

A manufacturing method and rounding technology, which is applied in the field of toothbrush filaments, can solve the problems of high manufacturing cost and complicated process steps of rounded end monofilaments, and achieve the effect of reducing manufacturing costs and reducing manufacturing costs

Inactive Publication Date: 2007-03-14
DUPONT XINGDA FILAMENTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the mechanical method must first integrate the monofilaments into clusters and fix them in the hole on the head of the brush handle before they can be rounded. Moreover, the mechanical rounding method requires additional special equipment for rounding, so the mechanical method of rounding The process steps are complicated, and the manufacturing cost of the end-rounded monofilament becomes higher

Method used

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  • Single filament end portion chemical rounding method, brush filament manufacturing method and brush filament manufactured thereof
  • Single filament end portion chemical rounding method, brush filament manufacturing method and brush filament manufactured thereof
  • Single filament end portion chemical rounding method, brush filament manufacturing method and brush filament manufactured thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0144] Aqueous sodium hydroxide solution with a concentration of 40% was introduced into a stainless steel shallow-bottomed container. The solution was heated to 120° C. after introduction, wherein the heating temperature was controlled by a glass thermometer. A single PBT monofilament was then placed vertically into the solution to an impregnation depth of 5 mm. After soaking for 10 minutes, the monofilament was taken out, washed with water for 5 minutes, dehydrated and then dried at 50° C. for 10 minutes to obtain the end-rounded monofilament of the present invention.

[0145] The end of the monofilament was observed with a microscope, and the results are shown in FIG. 5 . As can be seen from the comparison of Fig. 5, compared with untreated (Fig. 5a), the monofilament has obtained a good end rounding effect after being processed by the end chemical rounding method of the present invention (Fig. 5b), And there is no smearing that is inevitable with mechanical methods.

Embodiment 2

[0147] Except that the dipping time was changed to 20 minutes, the test and observation were carried out in the same manner as in Example 1. As a result, a monofilament with a round end was obtained, and the photomicrograph of the end is shown in FIG. 6 .

[0148] As can be seen from the comparison of Figure 6, compared with before (Figure 6a) before treatment, the monofilament has obtained a good end rounding effect after being processed by the end chemical rounding method of the present invention (Figure 6b), And there is no smearing that is inevitable with mechanical methods.

Embodiment 3

[0150] In addition to changing the single PBT monofilament to PBT silk cake, changing the concentration of sodium hydroxide aqueous solution to 50%, changing the depth of immersion to 10mm, changing the washing time to 30 minutes, and changing the drying time to 2 hours, with Example 1 also carried out tests and observations. As a result, a silk cake in which the end of each monofilament constituting the silk cake was round was obtained. One of the monofilaments was taken, and the photomicrograph of the end is shown in FIG. 7 .

[0151] As can be seen from the comparison of Fig. 7, compared with untreated (Fig. 7a), the monofilament has obtained a good end rounding effect after being processed by the end chemical rounding method of the present invention (Fig. 7b). , and there is no inevitable tailing of the mechanical method.

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Abstract

The invention relates to a method for chemically rounding the end of single filament. Wherein, it comprises: emerging one end of single filament into chemical rounding solution as alkali solution, acid solution or phenol solution; using said chemical rounding solution to corrode the single filament for preset time, to obtain the single filament with round end. For example, one end of single filament is rounded, and another end is sharp, therefore, the brush filament made from said single filament can massage and protect the gum. And the invention also provides a method for making two ends of brush filament in different shapes.

Description

technical field [0001] The invention relates to a method for chemically rounding the ends of a monofilament, a monofilament produced by the method and a toothbrush filament produced by the monofilament. The invention also relates to a method for manufacturing brush filaments with different shapes at both ends, and the brush filaments manufactured by the method. The filaments can be directly used as toothbrush filaments. Background technique [0002] Brushes are common production and daily necessities. The most important part of the brush is neither the handle nor the head, but the filaments planted on the head. The main part of the brush filament is at its end again, because the brush filament end directly contacts the surface that needs cleaning or treatment, such as the brush filament of a toothbrush will directly contact teeth, gums and gingival sulcus. [0003] It is known that the shape of the ends of the filaments affects the performance of the various functions of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A46D1/00A46D1/04D06M11/00
Inventor 王铭松
Owner DUPONT XINGDA FILAMENTS
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