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KR100976265B1 - Plastic Toe-cap for safety shoe - Google Patents

Plastic Toe-cap for safety shoe Download PDF

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Publication number
KR100976265B1
KR100976265B1 KR1020080059450A KR20080059450A KR100976265B1 KR 100976265 B1 KR100976265 B1 KR 100976265B1 KR 1020080059450 A KR1020080059450 A KR 1020080059450A KR 20080059450 A KR20080059450 A KR 20080059450A KR 100976265 B1 KR100976265 B1 KR 100976265B1
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Prior art keywords
tocap
pcpbt
plastic
safety
cap
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KR1020080059450A
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Korean (ko)
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KR20100000090A (en
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하기호
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주식회사 신경
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    • AHUMAN NECESSITIES
    • A43FOOTWEAR
    • A43BCHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B23/00Uppers; Boot legs; Stiffeners; Other single parts of footwear
    • A43B23/08Heel stiffeners; Toe stiffeners
    • A43B23/081Toe stiffeners
    • A43B23/086Toe stiffeners made of impregnated fabrics, plastics or the like
    • AHUMAN NECESSITIES
    • A43FOOTWEAR
    • A43CFASTENINGS OR ATTACHMENTS OF FOOTWEAR; LACES IN GENERAL
    • A43C13/00Wear-resisting attachments
    • A43C13/14Special attachments for toe-caps; Protecting caps for toe-caps

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  • Compositions Of Macromolecular Compounds (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

본 발명은 안전화용 플라스틱 토캡에 관한 것으로서, 플라스틱 소재 중 토캡에 최적화된 조성물을 형성하여 토캡의 내충격성을 개선하면서도 경량화를 실현하는 등 기능성이 향상된 안전화용 토캡 및 그 제조방법에 관한 것이다.The present invention relates to a plastic tocap for safety shoes, and to a functional tow safety cap and a manufacturing method thereof, such as forming a composition optimized for the tocap among plastic materials to improve the impact resistance of the tocap and to realize a light weight.

토캡, 안전화 Tocap, safety shoes

Description

안전화용 플라스틱 토캡{Plastic Toe-cap for safety shoe}Plastic Toe-cap for safety shoe

본 발명은 안전화용 플라스틱 토캡에 관한 것으로서, 플라스틱 소재 중 토캡에 최적화된 조성물을 형성하여 토캡의 내충격성을 개선하면서도 경량화를 실현하는 등 기능성이 향상된 안전화용 토캡 및 그 제조방법에 관한 것이다.The present invention relates to a plastic tocap for safety shoes, and to a functional tow safety cap and a manufacturing method thereof, such as forming a composition optimized for the tocap among plastic materials to improve the impact resistance of the tocap and to realize a light weight.

안전화용 토캡(Toe Cap)은 작업이나 활동시 안전을 요하는 신발의 앞꿈치 내피와 외피 사이에 개재되어 외부 충격으로부터 발을 보호하는 수단이다.Toe cap for safety shoes is a means to protect the feet from external shocks between the inner and outer heel of the shoe that requires safety during work or activities.

일반적으로 토캡은 스틸을 소재로 하여 내구성을 중시하는 것이나, 이는 신발의 무게를 가중시키는 단점이 있고 임계치 이상의 충격으로 인해 영구 변형되는 문제점이 있었다.In general, the tocap is made of steel, which emphasizes durability, but it has a disadvantage in that the weight of the shoe is increased, and there is a problem in that it is permanently deformed due to the impact of a threshold or more.

또한 종래의 플라스틱재 토캡의 경우는, 가볍고 복원력이 제공되는 등의 장점이 있으나, 스틸 토캡에 비하여 내구성이나 내충격성이 약한 치명적인 단점이 있어 외부충격으로부터 발을 보호하여야 하는 토캡의 소재로 선택되기에 미흡한 한계가 있다.In addition, the conventional plastic to cap has advantages such as light weight and resilience, but it has a fatal disadvantage in that durability and impact resistance are weak compared to steel to cap, so it is selected as a material of a to cap that must protect the foot from external impact. There are inadequate limits.

본 발명은 종래 플라스틱 토캡의 상술한 문제점을 해결하기 위한 것으로서, 안전화용 토캡에 요구되는 내구성 및 내충격성 등의 조건을 충족할 수 있는 최적화된 조성물을 제공함으로써 플라스틱재 토캡의 경량성이나 복원력의 장점을 그대로 취하면서도 기능성이 획기적으로 제고된 플라스틱 토캡의 제공을 목적으로 한다.The present invention is to solve the above-mentioned problems of the conventional plastic tocap, by providing an optimized composition that can meet the conditions, such as durability and impact resistance required for safety toecap, the advantages of light weight or resilience of the plastic tocap The purpose of the present invention is to provide a plastic tocap, which is dramatically improved in functionality while still taking.

본 발명은 폴리카보네이트(PC) 50 ~ 80 wt% 및 폴리 부틸렌 테레프탈레이트(PBT) 20 ~ 45 wt%의 혼합에 의해 형성된 피씨피비티(PCPBT)를 소재로 하는 안전화용 플라스틱 토캡을 제공한다.The present invention provides a plastic tocap for safety shoes based on PCPBT (PCPBT) formed by mixing 50 to 80 wt% of polycarbonate (PC) and 20 to 45 wt% of polybutylene terephthalate (PBT).

본 발명의 다른 특징에 의하면, 상기 PCPBT 조성물은 카본 블랙(Carbon Black)을 1wt% 이하로 첨가하여 형성된다.According to another feature of the invention, the PCPBT composition is formed by adding carbon black (Carbon Black) to 1wt% or less.

본 발명의 다른 특징에 의하면, 상기 안전화용 플라스틱 토캡의 제조방법은, 원자재를 혼합하여 피씨피비티(PCPBT)를 제조하는 단계; 상기 PCPBT를 120도에서 4 ~ 5시간 건조하는 단계; 상기 PCPBT를 이용하여 290 ~ 300 ℃로 사출성형하는 단계; 및 성형된 토캡을 냉각시켜 취출하는 단계; 를 포함하는 것을 특징으로 한다.According to another feature of the invention, the method for producing a plastic tocap for safety shoes, comprising: preparing a PCPBT by mixing the raw materials; Drying the PCPBT at 120 degrees for 4 to 5 hours; Injection molding at 290-300 ° C. using the PCPBT; And cooling down the molded tocap; Characterized in that it comprises a.

본 발명에 따르면, 안전화용 토캡에 최적화된 플라스틱 토캡의 조성물을 제공하여, 종래의 플라스틱 소재의 토캡이 갖는 내구성 한계를 극복하고, 경량성, 취급용이성 및 복원력과 같은 플라스틱 토캡의 장점은 그대로 취할 수 있는바, 기능 성이 향상된 토캡을 경제적으로 양산할 수 있어 안전화용 토캡 시장에 새로운 활력을 불어넣을 것으로 기대된다.According to the present invention, by providing a composition of plastic tocaps optimized for safety toecaps, the plastic caps such as light weight, ease of handling and resilience can be taken as they are, overcoming the durability limitations of conventional plastic tocaps. As a result, it is expected that economically mass-produced tocaps can be economically produced, which will give new vitality to the safety tocap market.

플라스틱 토캡은 종래의 스틸 토캡에 비하여 30% 가량의 경량화를 실현할 수 있으며 열 보존력이 뛰어나 방한 기능도 함께 제공할 수 있는 장점이 있다.Plastic tocaps can realize a weight reduction of about 30% compared to conventional steel tocaps, and have an advantage of providing excellent heat preservation and cold protection.

또한 자체 탄성력이 있어 외부의 강한 충격에 대해서도 영구 변형되지 않는 복원력을 갖는바, 안전화용 토캡으로서 좋은 선택이라고 할 것이다.In addition, it has elasticity of its own and has a restoring force that is not permanently deformed against strong external shocks, so it will be a good choice as a safety cap.

그러나 토캡은 외부의 강한 충격을 견디어 변형되지 않음으로 인해 발을 보호하는 내압박 및 내충격성이 가장 중요한 요건인바, 플라스틱재 토캡의 경우 종래의 스틸 토캡에 비하여 이 부분이 미흡한 것이 사실이다.However, the to cap is the most important requirement for the pressure resistance and impact resistance to protect the foot because it is not deformed to withstand the external strong impact, it is true that the plastic tocap is inadequate compared to the conventional steel tocap.

다음 표는 플라스틱 원자재의 종류에 따른 내압박 및 내충격 성능을 비교한 것인바, 같은 플라스틱재라고 하여도 그 원자재의 종류에 따라 토캡으로서의 성능은 다양하게 구현됨을 알 수 있다.The following table is a comparison of the pressure resistance and impact resistance performance according to the type of plastic raw material, even the same plastic material can be seen that the performance as a tocap according to the type of the raw material is variously implemented.

< 원자재별 내충격성 시험결과><Impact resistance test results by raw materials>

구 분division 원자재명Raw material name 시험명Exam name /Of SPECSPEC 결과result 검사기관Inspection Institution
내압박Pressure 내충격Impact resistance
1515 mmmm 2222 mmmm
혼합비율Mixing ratio PCPC BROKENBROKEN 12mm12 mm FAILFAIL 내부시험
Internal test
PBTPBT 8mm8 mm 10mm10 mm FAILFAIL 내부시험
Internal test
PCPBTPCPBT 2727 mmmm 3434 mmmm PASSPASS 한국의류연구원
Korea Apparel Research Institute
PAPA GF50GF50 %% 9mm9 mm 11mm11 mm FAILFAIL 내부시험
Internal test
PCABSPCABS 7mm7 mm 12mm12 mm FAILFAIL 내부시험
Internal test

상기 표를 보면, PC, PBT, PA GF50%, PCABS 등은 토캡으로서의 내압박 및 내충격 기준을 충족하지 못하여 토캡에 적용될 수 없는 것을 알 수 있으며, PCPBT 만이 요구된 기준을 충족하고 있다.Looking at the table, it can be seen that PC, PBT, PA GF50%, PCABS, etc. do not meet the pressure and shock resistance criteria as a tocap and can not be applied to the tocap, only PCPBT meets the required criteria.

PCPBT는 폴리 카보네이트(PC, PolyCarbonate) 및 폴리 부틸렌 테레프탈레이트(PBT, Poly Buthylene Terephthalate)의 혼합 조성물로서, 그 배합비율에 따라 성능의 차이가 발생한다.PCPBT is a mixed composition of polycarbonate (PC, PolyCarbonate) and poly butylene terephthalate (PBT, Polybuthylene Terephthalate), the performance difference occurs depending on the blending ratio.

본 발명은 중량백분율(wt%)을 기준으로 하여, PC는 50 ~ 80 wt% 범위에서 선택되고, PBT는 20 ~ 45 wt% 범위에서 선택하여 혼합하는 PCPBT 조성물을 토캡에 최적화된 조건으로 제시한다.The present invention presents PCPBT compositions with tocap-optimized conditions based on weight percent (wt%), PC selected from 50 to 80 wt% and PBT selected from 20 to 45 wt%. .

이 조건하에서 형성된 PCPBT는 내구성, 내충격성, 경량감, 복원력 및 보온성 등의 제반 안전화용 토캡의 기능성에 있어서 가장 우수한 효과를 보인다.The PCPBT formed under these conditions has the most excellent effect on the functionality of all safety toecaps, such as durability, impact resistance, light weight, restoring force and thermal insulation.

본 발명에 따른 PCPBT 조성물은 천연가스를 불완전 연소시켰을 때 발생한 검댕인 Carbon Black을 1 wt% 이하로 첨가할 수 있다.The PCPBT composition according to the present invention may add carbon black, which is a soot generated when incomplete combustion of natural gas, to 1 wt% or less.

본 발명에 따른 PCPBT 조성물을 소재로 하는 안전화용 토캡은 도 1에 도시된 바와 같은 공정에 의하여 양산될 수 있는바, 본 발명의 토캡은 사출성형 방식에 의하여 다양한 형태로 양산될 수 있는 취급용이성이 있다.Safety caps made of PCPBT composition according to the present invention can be mass produced by the process as shown in Figure 1, the tocap of the present invention is easy to handle that can be mass produced in a variety of forms by injection molding method have.

우선 본 발명에 따른 PCPBT 혼합물의 형성을 위하여 PC 및 PBT 등의 원자재를 본 발명에 따른 배합비율로 혼합하는 원자재 혼합단계(s1)를 수행하고, 상기 단계에서 혼합된 원자재를 120도에서 4시간 내지 5시간 건조하는 PCPBT 건조단계가 이어진다.First, in order to form a PCPBT mixture according to the present invention, a raw material mixing step (s1) of mixing raw materials such as PC and PBT in a compounding ratio according to the present invention is carried out, and the mixed raw materials in the above steps are carried out at 120 degrees for 4 hours. PCPBT drying step followed by 5 hours drying.

상기 단계에서 건조된 PCPBT 혼합물을 290도 내지 300도의 온도에서 사출성형한 뒤, 이를 냉각시켜 취출함으로써 본 발명에 따른 안전화용 토캡을 얻을 수 있다. After injection molding the dried PCPBT mixture in the above step at a temperature of 290 to 300 degrees, it can be cooled and taken out to obtain a safety cap according to the present invention.

도 1은 본 발명에 따른 안전화용 토캡의 제조방법에 대한 흐름도1 is a flow chart for the manufacturing method of the safety cap toecap according to the present invention

Claims (3)

폴리카보네이트(PC) 50 ~ 80 wt% 및 폴리 부틸렌 테레프탈레이트(PBT) 20 ~ 45 wt%의 혼합에 의해 형성된 피씨피비티(PCPBT)를 소재로 하는 안전화용 플라스틱 토캡.A safety plastic tocap based on PCPBT (PCPBT) formed by mixing 50 to 80 wt% of polycarbonate (PC) and 20 to 45 wt% of polybutylene terephthalate (PBT). 제1항에 있어서, 상기 PCPBT 조성물에 카본 블랙(Carbon Black)을 1wt% 이하로 첨가하여 형성된 안전화용 플라스틱 토캡.The safety plastic tocap of claim 1, wherein carbon black is added to the PCPBT composition in an amount of 1 wt% or less. 제 1항 또는 제2항의 안전화용 토캡의 제조방법에 있어서,In the manufacturing method of the safety cap toecap of claim 1, 원자재를 혼합하여 피씨피비티(PCPBT)를 제조하는 단계;Mixing the raw materials to produce PCPBT; 상기 PCPBT를 120도에서 4 ~ 5시간 건조하는 단계;Drying the PCPBT at 120 degrees for 4 to 5 hours; 상기 PCPBT를 이용하여 290 ~ 300 ℃로 사출성형하는 단계; 및 Injection molding at 290-300 ° C. using the PCPBT; And 성형된 토캡을 냉각시켜 취출하는 단계; 를 포함하는 것을 특징으로 하는 안전화용 플라스틱 토캡의 제조방법.Cooling and removing the molded tocap; Method of manufacturing a plastic tocap for safety shoes comprising a.
KR1020080059450A 2008-06-24 2008-06-24 Plastic Toe-cap for safety shoe KR100976265B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20150135816A (en) 2014-05-26 2015-12-04 주식회사 청하 Multi-shape toe cap using ultralight complex material and method of manufacturing same
KR20220068460A (en) 2020-11-19 2022-05-26 주식회사 나노텍세라믹스 Detachable toe-cap

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100297960B1 (en) 1999-01-18 2001-09-22 박정수 Toe cap and it manufacture method of safety shoes
US6598323B1 (en) 1997-12-05 2003-07-29 Robert M. Gougelet Toe protectors
KR100494812B1 (en) 2002-11-16 2005-06-13 주식회사 케이피아이 Molded toe cap and its preparing method
KR20050092621A (en) * 2004-03-16 2005-09-22 김영수 Plastic toecap for safety boots

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6598323B1 (en) 1997-12-05 2003-07-29 Robert M. Gougelet Toe protectors
KR100297960B1 (en) 1999-01-18 2001-09-22 박정수 Toe cap and it manufacture method of safety shoes
KR100494812B1 (en) 2002-11-16 2005-06-13 주식회사 케이피아이 Molded toe cap and its preparing method
KR20050092621A (en) * 2004-03-16 2005-09-22 김영수 Plastic toecap for safety boots

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20150135816A (en) 2014-05-26 2015-12-04 주식회사 청하 Multi-shape toe cap using ultralight complex material and method of manufacturing same
KR20220068460A (en) 2020-11-19 2022-05-26 주식회사 나노텍세라믹스 Detachable toe-cap

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