KR100573898B1 - Manufacturing method of toothbrush - Google Patents

Manufacturing method of toothbrush Download PDF

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Publication number
KR100573898B1
KR100573898B1 KR20030036887A KR20030036887A KR100573898B1 KR 100573898 B1 KR100573898 B1 KR 100573898B1 KR 20030036887 A KR20030036887 A KR 20030036887A KR 20030036887 A KR20030036887 A KR 20030036887A KR 100573898 B1 KR100573898 B1 KR 100573898B1
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KR
South Korea
Prior art keywords
toothbrush
bristles
head insert
manufacturing
mold
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KR20030036887A
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Korean (ko)
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KR20040105500A (en
Inventor
권영준
권성환
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권영준
권성환
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Application filed by 권영준, 권성환 filed Critical 권영준
Priority to KR20030036887A priority Critical patent/KR100573898B1/en
Priority to PCT/KR2004/001082 priority patent/WO2004113047A1/en
Priority to JP2006516908A priority patent/JP2006527061A/en
Publication of KR20040105500A publication Critical patent/KR20040105500A/en
Application granted granted Critical
Publication of KR100573898B1 publication Critical patent/KR100573898B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14336—Coating a portion of the article, e.g. the edge of the article
    • B29C45/14377—Coating a portion of the article, e.g. the edge of the article using an additional insert, e.g. a fastening element
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46D—MANUFACTURE OF BRUSHES
    • A46D3/00—Preparing, i.e. Manufacturing brush bodies
    • A46D3/005—Preparing, i.e. Manufacturing brush bodies by moulding or casting a body around bristles or tufts of bristles
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B2200/00—Brushes characterized by their functions, uses or applications
    • A46B2200/10—For human or animal care
    • A46B2200/1066—Toothbrush for cleaning the teeth or dentures
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B3/00—Brushes characterised by the way in which the bristles are fixed or joined in or on the brush body or carrier
    • A46B3/06—Brushes characterised by the way in which the bristles are fixed or joined in or on the brush body or carrier by welding together bristles made of metal wires or plastic materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14065—Positioning or centering articles in the mould
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14336—Coating a portion of the article, e.g. the edge of the article
    • B29C45/14385—Coating a portion of a bundle of inserts, e.g. making brushes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/42—Brushes
    • B29L2031/425—Toothbrush

Abstract

본 발명은 칫솔의 제조방법에 관한 것으로, 칫솔모(h)를 통공(11)이 형성되어 있으며 두께 1.5-3.0mm인 플라스틱 재질의 헤드인서트(10)의 이면에 1-3mm 돌출되도록 식모한 후, 돌출된 칫솔모를 열 융착시킴으로써 칫솔모(h)가 고정된 헤드인서트(10)를 제조한 다음, 칫솔모(h)를 금형의 외부에 위치하도록 칫솔모(h)가 고정된 헤드인서트(10)를 칫솔대 제조용 금형에 장착시키고 수지를 주입하여 사출성형하는 것을 특징으로 하며, 본 발명에 의하여 평선의 사용 없이 칫솔모를 칫솔대에 고정시킬 수 있으며, 고가의 설비인 사출기의 작업효율을 최대로 높일 수 있다.The present invention relates to a method for manufacturing a toothbrush, and after the bristles (h) are formed so as to protrude 1-3mm on the back surface of the head insert 10 of the plastic material having a through hole 11 and the thickness of 1.5-3.0mm, By heat-sealing the protruding bristles, the head insert 10 having the bristles h fixed thereto is manufactured, and then the head insert 10 having the bristles h fixed to the bristles h is positioned outside the mold. It is characterized in that the injection molding by mounting the mold and injection of resin, by using the present invention can be fixed to the brush head to the toothbrush rod without the use of a flat line, it is possible to maximize the work efficiency of the injection machine, which is expensive equipment.

칫솔, 열융착, 사출성형, 헤드인서트Toothbrush, Heat Fusion, Injection Molding, Head Insert

Description

칫솔의 제조방법{Manufacturing method of toothbrush} Manufacturing method of toothbrush             

도 1은 본 발명에서 사용되는 헤드인서트의 사시도이고,1 is a perspective view of a head insert used in the present invention,

도 2는 본 발명에서 사용되는 1차수용구의 측단면도이고,Figure 2 is a side cross-sectional view of the primary receptor used in the present invention,

도 3은 본 발명에서 사용되는 2차수용구의 측단면도이고,Figure 3 is a side cross-sectional view of the secondary receptor used in the present invention,

도 4는 본 발명에서 사용되는 밀판이 1차수용구에 삽입된 상태를 나타내는 측단면도이고,Figure 4 is a side cross-sectional view showing a state where the mill plate used in the present invention is inserted into the primary container,

도 5는 칫솔모가 헤드인서트에 식모되는 상태를 나타내는 측단면도이고,5 is a side cross-sectional view showing a state where the bristles are planted on the head insert,

도 6은 헤드인서트의 이면에 돌출된 칫솔모가 열융착된 상태를 나타내는 측단면도이고,6 is a side cross-sectional view showing a state where the bristles protruding from the rear surface of the head insert are heat-sealed;

도 7은 칫솔모가 고정된 헤드인서트가 금형에 장착되어 칫솔대와 일체화되어 사출성형되는 상태를 나타내는 모식도이고,Figure 7 is a schematic diagram showing a state in which the head insert is fixed to the bristle is mounted to the mold and integrated with the toothbrush rod injection molding,

도 8은 본 발명에 의하여 제작이 완료된 상태의 칫솔의 사시도이다.8 is a perspective view of a toothbrush in a state in which production is completed according to the present invention.

* 도면의 주요 부분에 대한 부호의 설명     * Explanation of symbols for the main parts of the drawings

10 : 헤드인서트, 11 : 통공10: head insert, 11: through hole

20 : 1차수용구, 30 : 2차수용구20: primary water port, 30: secondary water port

40 : 밀판 41 : 삽입봉40: plate 41: insertion rod

h : 칫솔모 p : 고정핀h: brush head p: fixing pin

s : 자동이동삽입장치s: Automatic insertion device

본 발명은 칫솔의 제조방법에 관한 것으로, 보다 상세하기로는 평선(wire)이 사용되지 아니하며 작업성이 향상된 칫솔의 제조방법에 관한 것이다.The present invention relates to a method of manufacturing a toothbrush, and more particularly to a method of manufacturing a toothbrush with no improved flatness (wire) and improved workability.

일반적인 칫솔의 제조방법은 머리 부분에 홀이 형성된 칫솔대를 성형한 다음, 이 홀에 칫솔모를 반으로 접어 넣어서 식모하고 홀의 직경보다 약간 큰 길이이며 탄성을 가진 금속 재질의 평선을 홀에 밀어 넣음으로써 식모된 칫솔모를 고정시킨다.In general, a toothbrush is manufactured by forming a toothbrush with a hole formed in the head, and then folding the bristles in half to form a bristles, and forming a toothbrush with a length slightly larger than the diameter of the hole and pushing a flat, elastic metal material into the hole. Fix the brush head.

이러한 전통적인 칫솔의 제조방법은 칫솔모의 고정이 부실하여 식모된 칫솔모가 빠지기 쉬운 단점과, 칫솔대의 머리 부분에 형성된 홀 속에 이물질이 끼이기 쉬운 위생상의 문제점을 가지고 있다.The traditional method of manufacturing a toothbrush has a drawback that the bristles that have been planted due to poor fixation of the bristles are easy to fall out, and hygiene problems that foreign substances are easily caught in holes formed in the head of the toothbrush.

상기 문제점을 해결하기 위한 종래의 기술로는 한국특허 제 360977호에 개시된 바와 같이, 칫솔모를 금형에 식모한 다음 금형 내에 돌출된 칫솔모를 열처리하여 용융시키고, 이 위에 칫솔대를 사출성형함으로써 칫솔모와 칫솔대가 일체화되도록 한 방법이 있다.As a conventional technique for solving the above problems, as disclosed in Korean Patent No. 360977, the bristles are planted in a mold, and then the bristles protruding in the mold are heat-treated and melted. There is a way to integrate.

이 기술에 의하여 칫솔모가 칫솔대에 강하게 고정됨과 동시에, 칫솔대의 머 리 부분에 형성되는 홀이 불필요하게 되어 상기한 바와 같은 전통적인 방법에 수반되는 문제점이 완벽하게 해결되었다.By this technique, the bristles are firmly fixed to the toothbrush bar, and holes formed in the head of the toothbrush bar are unnecessary, thereby completely solving the problems associated with the conventional method as described above.

그러나 상기 기술은 아래와 같은 단점을 가지고 있다.However, the above technique has the following disadvantages.

첫째, 고정된 형태의 금형에서 사출되므로 칫솔대의 형상에 변화를 줄 수 없다는 문제점을 가지고 있다. 칫솔대는 비교적 유행에 민감한 것이므로 그 형태가 고정된다는 것은 심각한 문제점이라 할 수 있다. 물론, 하나의 사출기에 형태가 상이한 금형을 장착하여 서로 다른 형태의 칫솔대를 제조할 수는 있겠으나 이 경우의 문제점은 서로 다른 형태의 칫솔대를 가진 칫솔이 같은 양으로 판매되어야만 하는 불편함이 따르게 된다.First, there is a problem that can not change the shape of the toothbrush because it is injected from a fixed mold. The toothbrush is relatively sensitive to fashion, so its shape is a serious problem. Of course, it is possible to manufacture different types of toothbrush bars by mounting different molds in one injection molding machine, but the problem in this case is that the toothbrushes having different types of toothbrush bars have to be sold in the same amount. .

둘째, 일련의 제조공정 중 하나의 공정이라도 이상이 발생할 경우 전체 공정을 중단하여야 하는 문제점을 가지고 있다. 통상 이 기술은, (1)금형에 칫솔모를 식모하는 공정, (2)금형 내에 돌출된 칫솔모를 열 융착하는 공정, (3)칫솔대를 사출성형하는 공정으로 이루어지며, 이 공정 중 어느 하나라도 이상이 발생하면 생산이 중단되어야 하는 것이다.Second, even if any one of a series of manufacturing process has a problem that should stop the entire process. Usually, this technique comprises (1) a step of brushing the bristles on a mold, (2) a step of thermally fusion bonding the bristles protruding into the mold, and (3) a step of injection molding the toothbrush. If this happens, production must be stopped.

셋째, 식모 및 열 융착공정 중에는 사출기의 가동이 중지되므로 고가의 설비인 사출기를 기준으로 할 때 시간 당 생산효율이 매우 낮다는 문제점을 가지고 있다.Third, since the operation of the injection molding machine is stopped during the planting and heat fusion process, the production efficiency per hour is very low when the injection molding machine is an expensive facility.

본 발명은 상기한 바와 같은 제반 문제점을 해결하기 위한 것으로, 칫솔대의 머리 부분에 홀이 형성되고, 평선이 사용되는 전통적 기술의 문제점을 해결함과 동시에, 생산효율이 높고 칫솔대의 형태변경이 자유로운 칫솔의 제조방법을 제공하는 것을 목적으로 한다. 본 발명의 다른 목적은 하나의 공정에 이상이 발생하더라도 다른 공정에 영향을 미치지 아니하는 칫솔의 제조방법을 제공하는 것이다.
The present invention is to solve the above-mentioned problems, the toothbrush is formed in the head portion of the toothbrush, the toothbrush solves the problems of the conventional technology that the flat line is used, the production efficiency is high, the toothbrush can change the shape of the toothbrush freely An object of the present invention is to provide a manufacturing method. Another object of the present invention is to provide a toothbrush manufacturing method that does not affect the other process even if an abnormality occurs in one process.

본 발명은 칫솔모를 통공이 형성되어 있으며 두께 1.5-3.0mm인 플라스틱 재질의 헤드인서트의 이면에 1-3mm 돌출되도록 식모한 후, 돌출된 칫솔모를 열 융착시킴으로써 칫솔모가 고정된 헤드인서트를 제조한 다음, 칫솔모가 칫솔대 제조용 금형의 외부에 위치하도록 칫솔모가 고정된 헤드인서트를 금형에 장착시키고 수지를 주입하여 사출성형하는 것으로 구성된다.According to the present invention, after the bristles are formed through holes and protruded 1-3 mm on the back surface of the plastic head insert 1.5-3.0 mm thick, the head bristles are fixed by heat-sealing the protruding bristles. In addition, the bristle is fixed to the head insert so that the bristles are located outside the mold for manufacturing the toothbrush, and the injection molding by injection molding resin.

이하, 본 발명을 첨부 도면에 의거 상세히 설명한다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

도1은 본 발명에서 사용되는 헤드인서트(10)의 사시도로서, 그 재질은 플라스틱이며 두께는 1.5-3.0mm 범위이다. 이 범위 미만의 경우에는 후술하는 열 융착 공정에서 휨이 발생할 우려가 있으며, 이 범위를 초과하는 경우에는 칫솔의 헤드 부분이 지나치게 두껍게 되는 문제점이 발생한다.1 is a perspective view of a head insert 10 used in the present invention, the material of which is plastic and the thickness is in the range of 1.5-3.0 mm. If it is less than this range, there exists a possibility that curvature may generate | occur | produce in the thermal fusion process mentioned later, and when it exceeds this range, the problem that the head part of a toothbrush becomes too thick arises.

헤드인서트(10)에는 칫솔모가 식모될 수 있도록 통공(11)이 형성되어 있다. 이 통공(11)은 평선이 사용되는 종래기술에서와 같이 균일한 크기일 필요가 없으며 식모될 칫솔모의 패턴을 고려하여 자유롭게 그 크기와 형태를 조절할 수 있다.The head insert 10 has a through hole 11 is formed so that the bristles can be planted. The through holes 11 need not be uniform in size as in the prior art in which flat lines are used, and can be freely adjusted in size and shape in consideration of the pattern of bristles to be planted.

식모방법은 원하는 길이로 절단된 칫솔모를 도2와 같은 형태의 1차 수용구(20)에 수용된 후, 도3과 같은 2차수용구(30)로 이송되고, 다시 헤드인서트 (10)로 이송된다. 1차 수용구(20) 및 2차 수용구(30)와 헤드인서트(10)는 동일한 형태의 통공(11)을 가진다. In the hair transplanting method, the bristles cut to a desired length are accommodated in the primary container 20 having the shape shown in FIG. 2, and then transferred to the secondary container 30 as shown in FIG. 3, and then transferred to the head insert 10. . The primary receiver 20, the secondary receiver 30, and the head insert 10 have the same through-hole 11.

1차수용구(20) 및 2차수용구(30)는 칫솔모(h)를 헤드인서트(10)에 전달하는 역할을 계속적으로 하는 것이므로 내구성이 우수한 금속재질이어야 한다.The primary receiving tool 20 and the secondary receiving device 30 should be a metal material with excellent durability because it serves to continuously transfer the bristles (h) to the head insert (10).

칫솔모(h)가 1차수용구(20)에 수용되는 과정은 1차수용구(20)에 형성된 통공 (11)과 요철결합할 수 있는 형태의 삽입봉(41)을 구비한 밀판(40; 도4 참조)이 칫솔모(h)를 1차수용구(20) 방향으로 밀어올림으로써 수용된다.The process in which the bristles h are accommodated in the primary container 20 is provided with a sealing plate 40 having an insertion rod 41 which can be unevenly coupled with the through hole 11 formed in the primary container 20 (FIG. 4). The bristle h is received by pushing the bristle h in the direction of the primary container 20.

헤드인서트(10)에 칫솔모(h)가 식모되는 과정은 1차수용구(20)와 2차수용구 (30) 및 헤드인서트(10)에 형성된 통공(11)이 일치하도록 서로 접촉된 상태에서 밀판(40)이 1차수용구(20)에 수용된 칫솔모(h)를 2차수용구(30) 및 헤드인서트(10) 쪽으로 밀어냄으로써 식모된다(도5 참조). 칫솔모(h)는 헤드인서트(10)의 이면에 1-3mm 범위로 돌출되도록 식모되며, 이 범위 미만의 경우에는 후술하는 열 융착공정에 의하여 통공(11)을 막는 것이 어렵게 되며, 이 범위를 초과하는 경우에는 칫솔의 머리 부분이 지나치게 두꺼워지는 문제점이 발생한다.The bristles h are implanted in the head insert 10 in the state in which the primary container 20, the secondary container 30, and the through holes 11 formed in the head insert 10 are in contact with each other so as to coincide with each other. 40) is planted by pushing the bristles h accommodated in the primary container 20 toward the secondary container 30 and the head insert 10 (see FIG. 5). Brush head (h) is planted to protrude in the 1-3mm range on the back surface of the head insert 10, if less than this range it becomes difficult to block the through-hole 11 by the heat fusion process described later, exceeds this range If you do, there is a problem that the head of the toothbrush is too thick.

헤드인서트(10)에 칫솔모(h)가 식모된 상태에서 헤드인서트(10)의 이면에 돌출된 칫솔모는 가열에 의하여 용융되어 헤드인서트(10)에 강하게 고정됨과 동시에 통공(11)을 막게된다(도6 참조).The bristles protruding from the back of the head insert 10 while the bristles h are implanted in the head insert 10 are melted by heating to strongly fix the head insert 10 and simultaneously block the through holes 11 ( 6).

칫솔모(h)가 고정된 헤드인서트(10)를 도7과 같이 칫솔모(h)가 금형의 캐비티 외부에 위치하도록 자동이동삽입장치(s)로 칫솔대 사출용 금형에 장착시킨 후 수지를 사출성형함으로써 제작이 완료된다. 이 때 칫솔모(h)가 고정된 헤드인서트(10)가 사출 압력에 의하여 밖으로 튕겨져 나가는 것을 방지하기 위해서는 고정핀(p)으로 헤드인서트(10) 눌러주는 것이 필요하다. 이를 통하여 칫솔모(h), 헤드인서트(10) 및 칫솔대가 일체화되며, 칫솔모(h)가 칫솔대로부터 분리되는 현상이 완벽하게 방지된다. 제작이 완료된 칫솔은 도8과 같다.By inserting the head insert 10 having the bristles h fixed to the toothbrush rod injection mold with the automatic insertion device s so that the bristles h are located outside the mold cavity as shown in FIG. The production is complete. At this time, in order to prevent the head insert 10 having the bristles h fixed thereto from being thrown out by the injection pressure, it is necessary to press the head insert 10 with the fixing pin p. Through this, the bristles h, the head insert 10 and the toothbrush bar are integrated, and the bristles h are separated from the toothbrush bar. Toothbrush is completed as shown in FIG.

발명에 의하여 평선의 사용 없이 칫솔모를 칫솔대에 고정시킬 수 있으며, 고가의 설비인 사출기의 작업효율을 최대로 높일 수 있다. 또한 본 발명에 의하여 칫솔대의 형태를 자유롭게 변경할 수 있으며, 하나의 공정에 이상이 발생하더라도 다른 공정에 영향을 미치지 아니하므로 생산효율을 극대화 할 수 있다.According to the present invention, the bristles can be fixed to the toothbrush rods without the use of a flat line, and the working efficiency of the injection molding machine, which is an expensive facility, can be maximized. In addition, according to the present invention, the shape of the toothbrush can be freely changed, and even if an abnormality occurs in one process, it does not affect other processes, thereby maximizing the production efficiency.

Claims (3)

칫솔모(h)를 헤드인서트(10)와 결합시킨 상태로 칫솔대 제조용 금형에 장착시킨 다음, 수지를 금형 내부에 주입하여 사출성형함으로써 칫솔모(h)와 칫솔대를 일체화시키는 칫솔의 제조방법에 있어서, In the toothbrush manufacturing method of integrating the brush head (h) and the toothbrush bar by mounting the bristles (h) in the mold for manufacturing a toothbrush stand in the state coupled with the head insert 10, and then injecting resin into the mold. 사출기와 분리된 식모기로, 칫솔모(h)를 통공(11)이 형성되어 있으며 두께 1.5-3.0mm인 플라스틱 재질의 헤드인서트(10)의 이면에 1-3mm 돌출되도록 식모한 후, 돌출된 칫솔모(h)를 열 융착시킴으로써 칫솔모(h)가 고정된 헤드인서트(10)를 제조한 다음, 이를 일반사출기로 이송하여 칫솔모(h)가 사출기에 부착된 금형의 외부에 위치하도록 칫솔모(h)가 고정된 헤드인서트(10)를 칫솔대 제조용 금형에 장착시키고 수지를 금형의 내부로 주입하여 사출성형하는 것을 특징으로 하는 칫솔의 제조방법.This is a separate device from the injection molding machine, the bristles (h) are formed through holes 11 are formed so as to protrude 1-3mm on the back surface of the head insert 10 of the plastic material 1.5-3.0mm thick, and then protruding bristles By heat-sealing (h), the bristle h is fixed, and the head insert 10 is fixed. Then, the bristles h are moved so that the bristle h is located outside the mold attached to the injection machine. A method of manufacturing a toothbrush, characterized in that the fixed head insert (10) is mounted on a mold for manufacturing a toothbrush stand and resin is injected into the mold. 제1항에 있어서, 칫솔모(h)는 헤드인서트(10)에 형성된 통공(11)과 동일한 크기의 통공(11)을 가진 1차수용구 및 2차수용구를 통과하여 헤드인서트(10)에 식모되는 것을 특징으로 하는 칫솔의 제조방법.According to claim 1, the bristle (h) is planted in the head insert 10 through the primary and secondary receiving port having a through hole 11 of the same size as the through hole 11 formed in the head insert (10). Toothbrush manufacturing method characterized in that. 제2항에 있어서, 칫솔모(h)는 통공(11)과 요철결합할 수 있는 삽입봉(41)을 가진 밀판(40)에 의하여 헤드인서트(10)로 식모되는 것을 특징으로 하는 칫솔의 제조방법.The method of manufacturing a toothbrush according to claim 2, wherein the bristles (h) are implanted into the head insert (10) by the contact plate (40) having an insertion rod (41) that can be unevenly coupled with the through hole (11). .
KR20030036887A 2003-06-09 2003-06-09 Manufacturing method of toothbrush KR100573898B1 (en)

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KR101307533B1 (en) * 2011-02-24 2013-09-12 최의정 Method of producing toothbrush
KR102123437B1 (en) 2019-02-19 2020-06-17 주식회사 리앤코 이노베이션 Toothbrush and manufacturing method thereof
KR102095522B1 (en) 2019-05-31 2020-03-31 주식회사 리앤코 이노베이션 Toothbrush and manufacturing method thereof
KR102123438B1 (en) 2019-05-31 2020-06-17 주식회사 리앤코 이노베이션 Toothbrush and manufacturing method thereof
KR20210009978A (en) 2019-07-18 2021-01-27 주식회사 리앤코 이노베이션 Method for manufacturing toothbrush and toothbrush manufactured by the method
KR20210038502A (en) 2019-07-18 2021-04-07 주식회사 리앤코 이노베이션 Method for manufacturing toothbrush and toothbrush manufactured by the method

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