KR20000072070A - A polyethylenenaphthalate type suckling bottle for a baby, and a process of preparing the same - Google Patents

A polyethylenenaphthalate type suckling bottle for a baby, and a process of preparing the same Download PDF

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KR20000072070A
KR20000072070A KR1020000041803A KR20000041803A KR20000072070A KR 20000072070 A KR20000072070 A KR 20000072070A KR 1020000041803 A KR1020000041803 A KR 1020000041803A KR 20000041803 A KR20000041803 A KR 20000041803A KR 20000072070 A KR20000072070 A KR 20000072070A
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South Korea
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polyethylenenaphthalate
feeding bottle
polyethylene naphthalate
mol
mole
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KR1020000041803A
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Korean (ko)
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옥영숙
김영석
송준명
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구광시
주식회사 코오롱
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Priority to KR1020000041803A priority Critical patent/KR20000072070A/en
Publication of KR20000072070A publication Critical patent/KR20000072070A/en

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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
    • C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
    • C08G63/12—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from polycarboxylic acids and polyhydroxy compounds
    • C08G63/16—Dicarboxylic acids and dihydroxy compounds
    • C08G63/18—Dicarboxylic acids and dihydroxy compounds the acids or hydroxy compounds containing carbocyclic rings
    • C08G63/181—Acids containing aromatic rings
    • C08G63/185—Acids containing aromatic rings containing two or more aromatic rings
    • C08G63/187—Acids containing aromatic rings containing two or more aromatic rings containing condensed aromatic rings
    • C08G63/189—Acids containing aromatic rings containing two or more aromatic rings containing condensed aromatic rings containing a naphthalene ring
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
    • A61J9/00—Feeding-bottles in general
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
    • C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
    • C08L67/03—Polyesters derived from dicarboxylic acids and dihydroxy compounds the dicarboxylic acids and dihydroxy compounds having the carboxyl- and the hydroxy groups directly linked to aromatic rings

Abstract

PURPOSE: A polyethylenenaphthalate nursing bottle without discharging environmental hormone such as bisphenol A when sterilized in boiling water, transparent and having crack resistance and process for the preparation thereof are provided which have low volume change rate even when sterilized repeatedly in boiling water and can be used for a long period of time. CONSTITUTION: The polyethylenenaphthalate nursing bottle comprises a homo or copolymerized polyethylenenaphthalate resin containing 85 to 100% by mole of polyethylenenaphthalate and 15 to 0% by mole of polyethyleneterephthalate and has a heat deflection temperature of 105 to 125°C, a transparency of above 85% and an impact resistance of 700 to 900 kgcm. The homo or copolymerized polyethylenenaphthalate resin containing 85 to 100% by mole of polyethylenenaphthalate and 15 to 0% by mole of polyethyleneterephthalate is melt injected at 160 to 230°C to produce a preform, which is blow molded in a blow molder at 120 to 180°C to produce the products.

Description

폴리에틸렌나프탈레이트계 유아용 수유병 및 그의 제조방법 {A polyethylenenaphthalate type suckling bottle for a baby, and a process of preparing the same}Polyethylene naphthalate-type infant feeding bottle and its manufacturing method {A polyethylenenaphthalate type suckling bottle for a baby, and a process of preparing the same}

본 발명은 폴리에틸렌나프탈레이트계 유아용 수유병 및 그의 제조방법에 관한 것이다.The present invention relates to a polyethylene naphthalate-based infant feeding bottle and a manufacturing method thereof.

유아용 수유병으로서 처음 사용되었던 재료는 유리이다. 유리로 만든 젖병의 장점은 투명하여 내용물 상태를 쉽게 파악할 수 있으며, 깨지지만 않는다면 수천회 재사용도 가능하다. 그러나 유리 수유병은 무겁고 깨질 위험성이 있어 유아들이 사용하는 데 있어 안정성에 문제가 있으며, 열탕소독후 유리 수유병을 식히는데 오랜시간이 소요된다는 단점도 있었다.The first material used as an infant feeding bottle was glass. The advantage of a glass bottle is that it's transparent, making it easy to see its contents and can be reused thousands of times unless broken. However, the glass feeding bottle is heavy and there is a risk of being broken, there is a problem in the stability of the infants use, there was a disadvantage that it takes a long time to cool the glass feeding bottle after boiling sterilization.

이러한 유리 수유병의 문제점을 보완해 지금 현재 일반적으로 널리 사용되어지고 있는 수유병으로는 폴리카보네이트 수지로 제조한 수유병이다. 폴리카보네이트 수지의 수유병은 우선 유리 수유병과 같이 내용물을 쉽게 파악할 수 있게 투명하고, 유리 수유병과는 달리 가볍고 깨질염려가 없다. 또한 자유자재로 형태 변형이 가능해 성형성도 우수하다.Complementing the problem of the glass feeding bottle is a feeding bottle currently being widely used now is a feeding bottle made of polycarbonate resin. Feeding bottles of polycarbonate resins are transparent so that the contents can be easily understood like glass feeding bottles, and, unlike glass feeding bottles, are light and fragile. In addition, the shape can be changed freely, and the moldability is excellent.

폴리카보네이트 수지는 플라스틱 재료이지만 열에 의한 변형 온도(140 ∼ 146℃)가 높아 열탕살균을 수백회 하여도 사용이 가능하다. 그러나 현재 국내외적으로 문제시되어지고 있는 내분비교란화학물질(이하 "환경호르몬"이라고 한다)로 의심되는 물질인 비스페놀-A가 열탕살균시 유출되는 문제가 있다. 특히 열탕살균이 반복될 수록 더 많은 비스페놀-A가 더 많이 유출된다.Polycarbonate resin is a plastic material, but the deformation temperature caused by heat (140 to 146 ° C) is high, so that it can be used even after several hundred times of sterilization. However, there is a problem that bisphenol-A, which is suspected to be an endocrine disrupting chemical substance (hereinafter referred to as "environmental hormone"), which is being questioned at home and abroad, is leaked during boiling sterilization. In particular, as the scalding is repeated, more bisphenol-A is released.

환경호르몬이란 환경중에 존재하다가 생체에 들어가면 호르몬과 유사한 작용을 하여 호르몬의 분비계를 교란시켜 생식기능 등에 악영향을 미친다고 여겨지고 있는 화학물질의 총칭을 말한다.Environmental hormone is a generic term for chemicals that exist in the environment and enter a living body, acting similarly to hormones, disrupting the hormone secretion system and adversely affecting reproductive function.

환경호르몬이 지금까지는 성기능 장애를 가져오는 것으로 알려졌지만 최근 뇌신경에 까지 치명적인 영향을 미치는 것으로 밝혀졌다. 일본 후카이도 대학 독성학 연구팀은 내분비교란물질로 알려진 비스페놀-A를 쥐에 주사해서 뇌신경 세포변화를 관찰한 결과, 비스페놀-A를 주입한 어미에게서 태어난 쥐의 뇌신경 세포는 건강한 쥐보다 약 두배정도 이상증식을 일으키는 것이 확인 됐다.Although environmental hormones have been known to cause sexual dysfunction until now, it has recently been shown to have a fatal effect on the brain nerves. A team of toxicologists at the University of Hukaido, Japan, injected bisphenol-A, a known endocrine disruptor, into rats and observed neuronal cell changes. It was confirmed to cause.

이 연구결과 환경호르몬은 지금까지 알려진 것보다 훨씬 광범위하고 치명적인 영향을 줄 수 있음이 입증됐다. 또한 폴리카보네이트 수유병은 블로우 (Blow)성형 방식과 사출성형 방식으로 제조가 가능하나 이들 모두 폴리카보네이트 수유병을 사용할 때 폴리카보네이트 수지 자체의 자외선 차단성이 낮기 때문에 자외선 살균기로 장기간 사용할 때 수유병이 변색되고 미세한 크랙(Crack)이 발생하여 분유세척이 용이하지 못한 문제점을 가지고 있다.The findings show that environmental hormones can have far more widespread and fatal effects than are known to date. In addition, polycarbonate feeding bottles can be manufactured by blow molding or injection molding, but both of them are discolored during long-term use as UV sterilizers because of the low UV protection of the polycarbonate resin itself. And there is a problem that is not easy to wash powdered milk due to the occurrence of minute cracks (Crack).

이러한 문제점을 보완하기 위해 폴리에테르설폰[Polyethersulfone(PES)]으로 제조한 젖병과 폴리프로필렌으로 제조된 젖병이 나오고 있으나, 유사 환경호르몬 비스페놀-S의 배출과 낮은 투명도(55%)로 문제가 되고 있다.In order to compensate for this problem, bottles made of polyethersulfone (PES) and bottles made of polypropylene are emerging, but the problem is caused by the emission of similar environmental hormone bisphenol-S and low transparency (55%). .

또한 환경호르몬 대체용으로 본 출원인은 한국특허출원 98-45238호 등에서 블로우(Blow)성형 방식으로 제조한 폴리에틸렌나프탈레이트계 수유병을 제안한 바 있다. 그러나 상기 수유병은 환경호르몬 의심물질이나 기타 유사 환경호르몬 물질의 용출은 없으나, 블로우성형시 발생한 응력의 잔류로 인하여 장기간의 내열성이 부족한 문제점을 가지고 있다. 그 결과 열탕에서 장기간 소독시 수유병의 부피(용적)가 심하게 변하는 문제가 있었다.In addition, the applicant has proposed a polyethylene naphthalate-based feeding bottle prepared by blow molding method in Korea Patent Application No. 98-45238, etc. as a substitute for environmental hormone. However, the feeding bottle has no problem of suspected environmental hormones or other similar environmental hormone substances, but has a problem of lack of long-term heat resistance due to residual stress generated during blow molding. As a result, there was a problem that the volume (volume) of the feeding bottle changed badly during prolonged disinfection in boiling water.

또한 상기 방법은 예비성형체(Proform)를 제조한 다음 재가열 해야 하므로 공정이 복잡한 문제도 있었다.In addition, the method has a complicated problem because the process to be produced after the preform (Proform) and then reheated.

본 발명은 열탕살균시 비스페놀-A와 같은 환경호르몬 배출이 없고, 투명하여 내용물 확인이 용이하며, 충격강도가 우수하여 잘 깨지지 않는 폴리에틸렌나프탈레이트계 유아용 수유병을 제공하고자 한다. 특히 본 발명은 잔류응력이 없어서 장시간 열탕소독시에도 열변형(부피변화)이 없는 폴리에틸렌나프탈레이트계 유아용 수유병을 제공하고자 한다. 또한 본 발명은 상기 성능을 구비한 폴리에틸렌나프탈레이트계 수유병을 보다 간소한 공정으로 제조하는 방법을 제공하고자 한다.The present invention is to provide a polyethylene naphthalate-based infant feeding bottle that does not have environmental hormones such as bisphenol-A during boiling water sterilization, transparent, easy to check the contents, excellent impact strength. In particular, the present invention is to provide a polyethylene naphthalate-type infant feeding bottle that does not have a thermal stress (volume change) even when hot water sterilization because there is no residual stress. In another aspect, the present invention is to provide a method for producing a polyethylene naphthalate-based feeding bottle with a simpler process.

이와 같은 과제를 달성하기 위한 본 발명의 유아용 수유병은, 폴리에틸렌나프탈레이트 85~100몰%와 폴리에틸렌테레프탈레이트 15~0몰%를 함유하는 호모 또는 공중합 폴리에틸렌나프탈레이트계 수지로 구성되며, 열변형온도(Tg)가 105~125℃이며, 투명도가 85% 이상인 것을 특징으로 한다.The infant feeding bottle of the present invention for achieving the above object is composed of a homo or copolymerized polyethylene naphthalate resin containing 85 to 100 mol% polyethylene naphthalate and 15 to 0 mol% polyethylene terephthalate, Tg) is 105 to 125 ° C, and transparency is 85% or more.

또한 본 발명의 유아용 수유병의 제조방법은, 폴리에틸렌나프탈레이트 85~100몰%와 폴리에틸렌테레프탈레이트 15~0몰%를 함유하는 호모 또는 공중합 폴리에틸렌나프탈레이트계 수지를 용융사출하여 예비성형체(Preform)를 제조한 다음, 이를 바로 120~180℃의 블로우 몰더(금형)를 통해 블로잉성형 함을 특징으로 한다.In addition, the manufacturing method of the infant feeding bottle of the present invention, by pre-molding a homo or copolymerized polyethylene naphthalate resin containing 85 to 100 mol% polyethylene naphthalate and 15 to 0 mol% polyethylene terephthalate to the preform (Preform) After manufacturing, it is blow molding through a blow molder (mold) of 120 ~ 180 ℃ immediately.

이하 본 발명을 상세하게 설명한다.Hereinafter, the present invention will be described in detail.

먼저, 본 발명에서 사용하는 폴리에틸렌나프탈레이트계 수지는 폴리에틸렌나프탈레이트 85~100몰%와 폴리에틸렌나프탈레이트 15~0몰%로 구성된다. 다시말해, 본 발명의 수지는 [ⅰ] 디메틸-2,6-나프탈렌디카르복실레이트(이하 "NDC"라고 한다)와 에틸렌글리콜(이하 "EG"라고 한다)를 중합하여 제조된 호모 폴리머 이거나, [ⅱ] NDC, 디메틸테레프탈레이트(이하 "DMT"라고 한다) 또는 테레프탈산(이하 "TPA"라고 한다) 및 EG를 공중합하여 제조한 공중합 폴리머 이다.First, the polyethylene naphthalate resin used in the present invention is composed of 85 to 100 mol% polyethylene naphthalate and 15 to 0 mol% polyethylene naphthalate. In other words, the resin of the present invention is a homopolymer prepared by polymerizing [X] dimethyl-2,6-naphthalenedicarboxylate (hereinafter referred to as "NDC") and ethylene glycol (hereinafter referred to as "EG"), [Ii] A copolymer polymer prepared by copolymerizing NDC, dimethyl terephthalate (hereinafter referred to as "DMT") or terephthalic acid (hereinafter referred to as "TPA") and EG.

호모 폴리에틸렌나프탈레이트계 수지인 경우 산성분중 NDC의 함량은 100몰%이고, 공중합 폴리에틸렌나프탈레이트계 수지인 경우 산성분중 NDC의 함량은 85몰% 이상 100몰% 미만이고 DMT 또는 TPA의 함량은 15몰% 이하이다.In the case of homo polyethylene naphthalate resin, the content of NDC in the acid component is 100 mol%. In the case of copolymerized polyethylene naphthalate resin, the content of NDC in the acid component is 85 mol% or more and less than 100 mol%, and the content of DMT or TPA is It is 15 mol% or less.

본 발명은 상기 폴리에틸렌나프탈레이트계 수지를 용융사출하여 예비성형체를 제조한 다음, 이를 재가열 하는 공정없이 바로 고온의 블로우 몰드(금형)를 통해 블로잉 성형하므로서 수유병 내에 잔류응력이 존재하지 않도록 함을 특징으로 한다.The present invention is to melt-inject the polyethylene naphthalate-based resin to prepare a preform, and then blow molding through a high temperature blow mold (mold) without the process of reheating it so that there is no residual stress in the feeding bottle It is done.

구체적으로 본 발명은 먼저 폴리에틸렌테레프탈레이트 85~100몰%와 폴리에틸렌테레프탈레이트 15~0몰%를 함유하는 호모 또는 공중합 폴리에틸렌나프탈레이트 수지를 용융사출하여 예비성형체(Preform)를 제조한다. 이때 폴리에틸렌나프탈레이트 전용 설비인 아오키(AOKI) 회사의 1-스테이지 기대(SB111-250LL)를 사용하는 것이 좋다. 제조된 예비성형체의 온도는 160~230℃인 것이 바람직 하다.Specifically, the present invention first prepares a preform by melt-injecting a homo or copolymerized polyethylene naphthalate resin containing 85 to 100 mol% polyethylene terephthalate and 15 to 0 mol% polyethylene terephthalate. At this time, it is recommended to use the one-stage base (SB111-250LL) of Aoki, a polyethylenenaphthalate-only facility. The temperature of the prepared preform is preferably 160 ~ 230 ℃.

다음으로 제조한 예비성형체를 재가열 처리 공정을 거치지 않고 바로 블로우 몰드로 이송한 후 1~8kgf/㎠의 블로우 압력으로 블로잉 성형하여 수유병을 제조한다. 이때 블로우 몰드(금형)의 온도는 120~180℃로 유지한다. 금형온도가 너무 낮으면 수유병내 잔류응력이 많아져 열변형 온도가 저하되고, 금형온도가 너무 높으면 수유병의 물성이 저하 될 수 있다.Next, the prepared preform is transferred directly to a blow mold without undergoing a reheating process, and then blow molding is performed at a blow pressure of 1 to 8 kgf / cm 2 to prepare a feeding bottle. At this time, the temperature of the blow mold (mold) is maintained at 120 ~ 180 ℃. If the mold temperature is too low, the residual stress in the feeding bottle increases, so that the heat deformation temperature decreases. If the mold temperature is too high, the physical properties of the feeding bottle may decrease.

블로우 성형시 횡방향 연신비(MD)는 1.0~4.0배, 종방향 연신비(TD)는 1.2~3.0배가 되도록 한다. 연신비가 상기 범위보다 낮으면 적정 연신온도를 유지하더라도 중합체의 변형은 영구변형보다 탄성변형에 가깝게 이루어 진다. 그 결과 연신후의 수유병 내부에 응력이 잠재되어 있어 열탕살균시 쉽게 변형된다. 연신비가 상기 범위를 초과하는 경우에는 연신시 중합체의 배향 또는 결정화가 수반되어 연신후의 수유병 내부에 높은 응력이 잠재되어 있어 열탕살균시 쉽게 변형된다.In blow molding, the transverse draw ratio MD is 1.0 to 4.0 times and the longitudinal draw ratio TD is 1.2 to 3.0 times. If the draw ratio is lower than the above range, even if the proper draw temperature is maintained, the deformation of the polymer is made closer to the elastic deformation than the permanent deformation. As a result, there is a potential for stress in the feeding bottle after stretching, which is easily deformed during boiling sterilization. When the stretching ratio exceeds the above range, the orientation or crystallization of the polymer is accompanied during stretching, so that a high stress is latent in the nursing bottle after stretching, and is easily deformed during boiling sterilization.

본 발명의 수유병은 잔류응력이 잔존하지 않아 열변형온도가 105~125℃로 높다. 그 결과 100℃ 이상의 열탕에서 반복적으로 열탕소독하여도 부피(용적)변화율이 적어 오랫동안 사용 할 수 있다. 아울러 충격강도가 700~900kgcm이며 투명도가 85% 이상이다. 또한 380nm 이하의 자외선을 차단 할 수 있다.The feeding bottle of the present invention has no residual stress, and thus has a high heat deflection temperature of 105 to 125 ° C. As a result, even after repeated boiling water sterilization in boiling water over 100 ℃, the volume (volume) change rate is small, can be used for a long time. In addition, the impact strength is 700 ~ 900kgcm, transparency is more than 85%. It can also block ultraviolet rays below 380nm.

본 발명에 있어서 수유병의 각종물성은 아래와 같이 평가 하였다.Various physical properties of the feeding bottle in the present invention were evaluated as follows.

·투명도(%)·transparency(%)

헤이즈메터(니폰 덴쇼큐사 제품)로 ASTM D 1003 방식으로 측정 하였다.Haze meter (manufactured by Nippon Denshoku Co., Ltd.) was measured by ASTM D 1003 method.

·자외선 차단성UV blocking

자외선(UV)-스펙트로메터(Hewlett Packard사 제품)으로 측정 하였다.It was measured by ultraviolet (UV) spectrometer (manufactured by Hewlett Packard).

·반복 열탕처리 가능 횟수· Number of repeated boiling water treatments

열탕에서 2분간식 반복적으로 열탕소독 하면서 수유병의 부피변화율을 측정하여 수유병의 부피변화율이 5%를 초과하기 직전의 열탕처리 횟수를 구한다.The volume change rate of the feeding bottle was measured while repeatedly disinfecting the boiling water for 2 minutes in a boiling water, and the number of times of boiling water treatment before the feeding bottle volume exceeded 5% was obtained.

이하 실시예 및 비교실시예를 통하여 본 발명을 더욱 상세하게 살펴 본다. 그러나 본 발명이 하기 실시예에만 한정되는 것은 아니다.Hereinafter, the present invention will be described in more detail with reference to Examples and Comparative Examples. However, the present invention is not limited only to the following examples.

실시예 1Example 1

폴리에틸렌나프탈레이트 90몰%와 폴리에틸렌테레프탈레이트 10몰%로 구성된 공중합 폴리에틸렌나프탈레이트 수지를 1-스테이지 기대(아오키 SB111-250LL)에서 용융사출하여 예비성형체를 제조한다. 상기 예비성형체를 재가열 하지 않고 바로 금형온도가 160℃ 블로우 몰드에서 3kgf/㎠의 블로우 압력으로 블로잉 성형하여 유아용 수유병을 제조한다. 이때 횡방향 연신비는 1.8배 이고, 종방향 연신비는 1.9배 이다. 제조한 수유병의 판넬 1 두께는 1.29mm. 판넬 3 두께는 1.26mm 이다. 제조한 유병의 반복 열탕처리 가능 횟수, 투명도, 자외선 차단성 및 열변형온도를 평가한 결과는 표 2와 같다.Co-polymerized polyethylene naphthalate resin consisting of 90 mol% polyethylene naphthalate and 10 mol% polyethylene terephthalate is melt-injected on a one-stage base (Aoki SB111-250LL) to prepare a preform. A baby feeding bottle is manufactured by blowing the mold temperature at a blow pressure of 3 kgf / cm 2 in a 160 ° C blow mold without reheating the preform. The lateral draw ratio is 1.8 times and the longitudinal draw ratio is 1.9 times. The thickness of panel 1 of the prepared feeding bottle was 1.29 mm. Panel 3 thickness is 1.26mm. Table 2 shows the results of evaluating the number of times of repeated boiling water treatment, transparency, UV protection, and heat deflection temperature of the prepared bottle.

실시예 2 ~ 실시예 5Example 2-Example 5

수지조성 및 블로우 몰드의 금형온도를 표 1과 같이 변경한 것을 제외하고는 실시예 1과 동일한 공정 및 조건으로 유아용 수유병을 제조한다. 제조한 유병의 반복 열탕처리 가능 횟수, 투명도, 자외선 차단성 및 열변형온도를 평가한 결과는 표 2와 같다.A baby feeding bottle was manufactured in the same process and conditions as in Example 1 except that the resin composition and the mold temperature of the blow mold were changed as shown in Table 1. Table 2 shows the results of evaluating the number of times of repeated boiling water treatment, transparency, UV protection, and heat deflection temperature of the prepared bottle.

제조조건Manufacture conditions 구 분division 실시예 1Example 1 실시예 2Example 2 실시예 3Example 3 실시예 4Example 4 실시예 5Example 5 수지조성(몰%)Resin composition (mol%) 폴리에틸렌나프탈레이트Polyethylene naphthalate 9090 100100 8888 9595 8686 폴리에틸렌테레프탈레이트Polyethylene terephthalate 1010 00 1212 55 1414 블로우 몰드 금형온도(℃)Blow Mold Mold Temperature (℃) 160160 150150 140140 130130 120120

비교실시예 1Comparative Example 1

폴리에틸렌나프탈레이트 90몰%와 폴리에틸렌테레프탈레이트 10몰%로 구성된 공중합 폴리에틸렌나프탈레이트 수지를 1-스테이지 용융사출기(니세이 ASB-100)에서 용융사출 하여 예비성형체(Preform)를 제조한다. 상기 예비성형체를 포트(Pot)에서 195℃로 재가열한 후, 블로우 몰드 내에서 3kgf/㎠의 압력으로 블로잉 성형하여 유아용 수유병을 제조한다. 이때 횡방향 연신비는 1.8배, 종방향 연신비는 2.0배로 하였다. 제조한 유아용 수유병의 반복 열탕처리 가능 횟수, 투명성, 자외선 차단성 및 열변형 온도를 평가한 결과는 표 2와 같다.A preform is manufactured by melt-coating a copolymerized polyethylene naphthalate resin composed of 90 mol% polyethylene naphthalate and 10 mol% polyethylene terephthalate in a one-stage melt injection machine (Nisei ASB-100). The preform is reheated to 195 ° C. in a pot, and then blow molded at a pressure of 3 kgf / cm 2 in a blow mold to prepare an infant feeding bottle. At this time, the transverse draw ratio was 1.8 times and the longitudinal draw ratio was 2.0 times. The results of evaluating the number of times the repeated boiling water treatment, transparency, UV protection and heat deformation temperature of the prepared baby feeding bottle are shown in Table 2.

유아용 수유병 물성 평가 결과Infant feeding bottle property evaluation result 구 분division 반복 열탕처리 가능 횟수Number of repeated boiling water treatments 열변형온도(℃)Heat deflection temperature (℃) 투명도(%)transparency(%) 자외선차단성(nm 이하)UV protection (nm or less) 실시예 1Example 1 180180 115115 8888 380380 실시예 2Example 2 175175 123123 9090 380380 실시예 3Example 3 160160 118118 8686 380380 실시예 4Example 4 155155 110110 8888 380380 실시예 5Example 5 150150 118118 8787 380380 비교실시예 1Comparative Example 1 140140 104104 8888 380380

본 발명의 유아용 수유병은 폴리에틸렌나프탈레이트계 수지로 구성되어, 사용중 깨질위험이 낮고, 환경호르몬 배출이 없고, 투명하다. 또한 본 발명은 간소화된 공정으로 잔류응력이 없는 수유병을 제조 할 수 있다. 본 발명의 수유병은 열변형온도가 높아서 반복적으로 열탕 소독시에도 수유병의 용적(부피)변화율이 낮아 오랫동안 사용 할 수 있다.The infant feeding bottle of the present invention is composed of polyethylene naphthalate-based resin, has a low risk of being broken during use, is free of environmental hormones, and is transparent. In addition, the present invention can produce a feeding bottle without residual stress in a simplified process. The feeding bottle of the present invention has a high heat deflection temperature, and thus can be used for a long time because the rate of change in volume (volume) of the feeding bottle is low even when disinfecting boiling water repeatedly.

Claims (4)

폴리에틸렌나프탈레이트 85~100몰%와 폴리에틸렌테레프탈레이트 15~0몰%를 함유하는 호모 또는 공중합 폴리에틸렌나프탈레이트계 수지로 구성되며, 열변형온도(Tg)가 105~125℃이며, 투명도가 85% 이상인 것을 특징으로 하는 폴리에틸렌나프탈레이트계 유아용 수유병.It is composed of homo or copolymerized polyethylene naphthalate resin containing 85 ~ 100 mol% polyethylene naphthalate and 15 ~ 0 mol% polyethylene terephthalate, and its heat deformation temperature (Tg) is 105 ~ 125 ℃ Polyethylene naphthalate-based infant feeding bottle, characterized in that. 1항에 있어서, 수유병의 충격강도가 700~900kgcm인 것을 특징으로하는 폴리에틸렌나프탈레이트계 유아용 수유병.The polyethylene naphthalate infant feeding bottle according to claim 1, wherein the feeding strength of the feeding bottle is 700 to 900 kgcm. 폴리에틸렌나프탈레이트 85~100몰%와 폴리에틸렌테레프탈레이트 15~0몰%를 함유하는 호모 또는 공중합 폴리에틸렌나프탈레이트계 수지를 용융사출하여 예비성형체(Preform)를 제조한 다음, 이를 바로 120~180℃의 블로우 몰더(금형)를 통해 블로잉성형 함을 특징으로 하는 폴리에틸렌나프탈레이트계 유아용 수유병의 제조방법.Preforms are prepared by melt injection of homo or copolymerized polyethylene naphthalate resins containing 85-100 mol% polyethylene naphthalate and 15-0 mol% polyethylene terephthalate, followed by blow at 120-180 ° C. Method for producing a polyethylene naphthalate-based infant feeding bottle characterized in that the blow molding through the mold (mold). 3항에 있어서, 예비성형체(Preform)의 온도가 160~230℃인 것을 특징으로하는 폴리에틸렌나프탈레이트계 유아용 수유병의 제조방법.The method of claim 3, wherein the temperature of the preform (Preform) is 160 ~ 230 ℃.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020048103A (en) * 2000-12-16 2002-06-22 조 정 래 Molding process of polyethylene naphthalate container
KR100575126B1 (en) * 2002-01-08 2006-04-28 주식회사 효성 a process method of heat resistance bottle with co-polyethylenenaphthalate and polyethyleneterephthalate blends

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998018847A1 (en) * 1996-10-30 1998-05-07 Shell Internationale Research Maatschappij B.V. Process for the crystallization of polyethylene naphthalate prepolymers and the solid stating of those crystallized prepolymers
US5902539A (en) * 1996-12-06 1999-05-11 Continental Pet Technologies, Inc. Process for making PEN/PET blends and transparent articles therefrom
KR0183460B1 (en) * 1996-05-28 1999-05-15 이웅열 Process for preparing polyester resins which have excellent ultraviolet ray
KR19990072930A (en) * 1998-02-27 1999-09-27 나까니시 히로유끼 Novel polyester and process for preparing polyester
KR19990072211A (en) * 1996-10-18 1999-09-27 울데리코 에르꼴라니 How to dimensionally stabilize polyethylene terephthalate containers
KR20000032656A (en) * 1998-11-17 2000-06-15 구광시 Process for manufacture of polyethylenenaphthalate copolymer resin

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR0183460B1 (en) * 1996-05-28 1999-05-15 이웅열 Process for preparing polyester resins which have excellent ultraviolet ray
KR19990072211A (en) * 1996-10-18 1999-09-27 울데리코 에르꼴라니 How to dimensionally stabilize polyethylene terephthalate containers
WO1998018847A1 (en) * 1996-10-30 1998-05-07 Shell Internationale Research Maatschappij B.V. Process for the crystallization of polyethylene naphthalate prepolymers and the solid stating of those crystallized prepolymers
US5902539A (en) * 1996-12-06 1999-05-11 Continental Pet Technologies, Inc. Process for making PEN/PET blends and transparent articles therefrom
KR19990072930A (en) * 1998-02-27 1999-09-27 나까니시 히로유끼 Novel polyester and process for preparing polyester
KR20000032656A (en) * 1998-11-17 2000-06-15 구광시 Process for manufacture of polyethylenenaphthalate copolymer resin

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020048103A (en) * 2000-12-16 2002-06-22 조 정 래 Molding process of polyethylene naphthalate container
KR100575126B1 (en) * 2002-01-08 2006-04-28 주식회사 효성 a process method of heat resistance bottle with co-polyethylenenaphthalate and polyethyleneterephthalate blends

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