WO2001006981A1 - A suckling bottle for baby, and a process of preparing the same - Google Patents

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

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Publication number
WO2001006981A1
WO2001006981A1 PCT/KR2000/000804 KR0000804W WO0106981A1 WO 2001006981 A1 WO2001006981 A1 WO 2001006981A1 KR 0000804 W KR0000804 W KR 0000804W WO 0106981 A1 WO0106981 A1 WO 0106981A1
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WO
WIPO (PCT)
Prior art keywords
bottle
suckling
infant
mole
copolyester
Prior art date
Application number
PCT/KR2000/000804
Other languages
French (fr)
Inventor
Young Suk Ok
Kyeong Ah Kim
Young Seok Kim
Byung Kun Son
Original Assignee
Kolon Industries, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR1019990030299A external-priority patent/KR20000049313A/en
Priority claimed from KR1019990030300A external-priority patent/KR20000049314A/en
Application filed by Kolon Industries, Inc. filed Critical Kolon Industries, Inc.
Priority to AU60257/00A priority Critical patent/AU6025700A/en
Publication of WO2001006981A1 publication Critical patent/WO2001006981A1/en

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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61JCONTAINERS 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
    • A61J9/00Feeding-bottles in general

Definitions

  • the present invention relates to a suckling bottle for infant
  • invention relates to a suckling bottle, which does not exhaust any
  • the present invention relates to a suckling bottle for infant
  • the polycarbonate resin is plastic material, it is plastic material
  • sea gull, alligator, carp, turban shell, and mud snail are affected
  • plastic raw material of resin, additives, heavy metal, dioxine, DES
  • Bis phenol-A is indicated as a internal secretion disturbing
  • Bis phenol-A is the one which causes Estrogenic.
  • Estrogenic is not detected within lOppb limit. According to the research team of Stanford University, however, it is enough to
  • homopolyester resin or copolyester resin comprising more than
  • NDC dime thy 1-2, 6 -naphthalene dicarboxylate
  • the bottle showed more than 5% of change
  • the present invention provides a suckling bottle and a process of
  • the bottle is
  • copolyester resin comprising 85 mole % - 100 mole % of NDC
  • TPA ethylene glycol
  • the content of NDC is 85mole% ⁇ 99mole%
  • copolymerized resin at 0.68— 0.83 dd/g, more preferably at 0.71 —0.76
  • the post processing shall be difficult.
  • Nisse ASB-100 is applicable for 1-Stage machine.
  • deformation of the bottle is lower part of side vertical where has most changes during blowing molding. Accordingly, it is desirable
  • the necking draw part shall change white color
  • copolymer shall be made like elastic deformation other than
  • the suckling bottle shall be
  • the suckling bottle of the present invention is composition of Homopolyester resin or Copolyester resin comprising 85 mole % -
  • the suckling bottle of the present invention has
  • the suckling bottle of the present invention shows following
  • DSC DSC
  • ⁇ HTm melting calorie
  • ⁇ HTCC crystallization calorie
  • the material inside is in proportion to the total quantity of crystal
  • the present invention in addition, the difference of melting
  • Tcc(peak) the value of [Tm - Tcc( pea k)]
  • Figure 2 is the crystallization behavior(Heating Curve) of homopolyester or copolyester of the present invention in DSC. Since
  • the present invention meets the said crystallization behavior in
  • Panel 1 side (hereinafter called "Panel 1") of the bottle and the lower part of
  • Panel 3 vertical side of the bottle.
  • Figure 1 is a cross section of suckling bottle of the present
  • Figure 2 is a graph which represents drawing behavior
  • Figure 3 is a graph which represents heating curve on DSC of suckling bottle resin of the present invention.
  • Tcc(onset) Heating crystallization onset temperature
  • Panel 3 is 1.26mm.
  • Table 1 is the measurement results of shape and property
  • the drawing ratio of horizontal direction is 1.8 times and that of vertical direction is 2.0 times.
  • Panel 3 is 1.26mm.
  • the suckling bottle of the present invention is transparent,
  • the suckling bottle of the present invention is
  • the suckling bottle of the present invention could maintain

Abstract

The present invention relates to a suckling bottle for infant and a process of preparing the same, which does not exhaust any Environmental Hormone such as bis phenol-A, and has more than 30 times of excellent repetitious heat resistance. The present invention is characterized that firstly, prepare preform by melting injection the homopolyester resin or copolyester resin comprising 85 mole % - 100 mole % of dimethyl-2,6-naphthalene dicarboxylate (NDC), and then produce the suckling bottle for infant by re-heating and blowing molding the prepared preform under the following conditions: inherent viscosity of homopolyester or copolyester: 0.68∩0.83dl/g; re-heating temperature of preform: 160∩210 °C; drawing ratio of vertical and horizontal direction during blowing molding: 1.5∩2.5 times.

Description

A SUCKLING BOTTLE FOR BABY, AND A PROCESS OF
PREPARING THE SAME
TECHNICAL FIELD
The present invention relates to a suckling bottle for infant
and a process of preparing the same. More particularly, the present
invention relates to a suckling bottle, which does not exhaust any
Environmental Hormone such as bis phenol-A, has excellent heat
resistance to maintain its shape and properties in repetitious
sterilization treatment in boiling water.
BACKGROUND ART
The present invention relates to a suckling bottle for infant
and a process of preparing the same.
It is glass at first which has been used as raw material for
the suckling bottle for infant. The advantages of suckling bottle
made of glass is its transparency. It is easy to notice the contents
in the bottle, and it is possible to reuse permanently as long as the
suckling bottle is not broken. Important drawbacks, however, of the suckling bottle made of glass is its weight and safety; L is too
heavy for infant to use, and is too dangerous due to its fragility.
It is suckling bottle made of polycarbonate resin which is
widely used in general, making up such drawbacks of glass
suckling bottle. It is easy to notice the contents in the bottle like
glass suckling bottle. But, it is nor heavy neither fragile. In
addition, its excellent formability enables to shape in any form
easily.
Even though the polycarbonate resin is plastic material, it is
possible to reuse as several hundred times from repetitious heat
sterilization since its high transform temperature (140 ~ 146 "C ).
However, this polycarbonate suckling bottle has a serious
problem of exhausting Bis Phenol-A during sterilization in boiling
water. Which is suspected as an internal secretion disturbing
chemical. Especially, more Bis Phenol-A is exhausted by repetitious
sterilization in boiling water.
Environmental Hormone is a general terminology for certain
chemicals which is believed to adversely affect to generative
function of live body when by disturbing secretion system of the live body just like a hormone. Environmental Hormone is called
internal secretion disturbing chemical, also.
Negative effects to animals of Environmental Hormone has
been discovered in England and U.S.A. from 1950. At that time, it
was not known what was the reason. Animals such as otter, mink,
sea gull, alligator, carp, turban shell, and mud snail are affected
from Environmental Hormone. Symptoms like generation disorder,
infertility, impotent are founded from these animals.
Recently, negative effect of Environmental Hormone to
animal is spread out to the whole world. Turban shell and carp in
Japanese sea shore or riverside suffer from impotent or spermarry
disorder. It is assumed that insecticide, dioxine, vessel
paintin s(tributhyltin), birth control pill, Nonil Phenol, a surface
active agent, are the source material for these unfavorable effects.
It is clear that the negative effect of Environmental Hormone
to human body is uterine cancer of female who was born by a
pregnant used DES for abortion protection.
According to the interim report of research team of Japanese
Environment Agency, the numbers of chemicals suspected its internal secretion disturbing are about 70 kinds. If there are
classified by its usage, these are insecticide, agricultural chemicals,
plastic, raw material of resin, additives, heavy metal, dioxine, DES
and so on.
Environment Agency of Illinois, U.S.A. classifies the 70 kinds
of Environmental Hormone to 3 classes in accordance with its
certainty: About 20 ascertained substances such as Nonil Phenol, 29
possible substances such as bis phenol-A, and 25 suspected
substances such as octachrostylene.
Bis phenol-A is indicated as a internal secretion disturbing
chemicals (hereinafter called "Environmental Hormone") which
causes generation disorder and delivery of deformed child. From
the detection of Estrogenic in polycarbonate flask used for
experimental pasteurization water by Medical School, Stanford
University, U.S.A. in 1990, the problem of polycarbonate linked to
Environmental Hormone was noticed.
Bis phenol-A is the one which causes Estrogenic. General
Electric, the original maker of polycarbonate, declared at first that
Estrogenic is not detected within lOppb limit. According to the research team of Stanford University, however, it is enough to
detect Estrogenic with 2~5ppb bis phenol-A.
In September 1997, the City of Osaka, Japan, detected
960-5440ppm of bis phenol-A, which exceeds the standard (500ppm)
of the Food Sanitation Law, from polycarbonate tableware for
children use, and a call-back order was effectuated. The
manufacturer decided no production of the polycarbonate tableware
in April 1998 with its voluntarily call-back.
A suckling bottle made of polycarbonate was in troubled
from the disclosure by Environmental Science Research Center of
Yokohama National University that; a detection of 3-5ppb bis
phenol-A, though the figure is lower than the standard of the Food
Sanitation Law, when the suckling bottle made of polycarbonate put
in 95 "C hot water.
In order to solve the problem of Environmental Hormone
exhaustion such as bis phenol-A, suggestions of processes were
made to prepare heat resistance bottle or suckling bottle for infant
with homopolyester resin or copolyester resin comprising more than
85% mole of dime thy 1-2, 6 -naphthalene dicarboxylate (hereinafter called "NDC") in Korean Public Patent Nos. 97-42654, 98-45238,
and 99-9546.
Though the heat resistance bottle or suckling bottle for
infant prepared in the aforesaid process does not exhaust
Environmental Hormone, the bottle showed certain problems of
deteriorations in shape and properties during repetitious heat
sterilization treatment.
More particularly, the bottle showed more than 5% of change
in bottle capacity and more 3% of change in certain part of the
bottle when the bottle is treated 15 - 20 times repetitious 2
minutes heat sterilization. In addition, the bottle is not good for
suckling bottle any more due to its severe changes in haze, light
permeability, and color.
DISCLOSURE OF THE INVENTION
Accordingly, it is the object of the present invention to
provide a suckling bottle and a process of preparing the same, that
is not fragile, and does not exhaust any Environmental Hormone
during sterilization treatment in boiling water. Particularly, the present invention provides a suckling bottle and a process of
preparing the same, characterized by its excellent heat resistance to
maintain the shape and properties in repetitious sterilization
treatment in boiling water. More particularly, the bottle is
characterized by the composition of homopolyester resin or
copolyester resin comprising 85 mole % - 100 mole % of NDC, the
repetitious heat resistance more than 30 times.
In addition, the aforesaid suckling bottle of the present
invention is characterized by the following properties.
- Properties -
Melting Calorie[ΔHτm] - Heating Crystallization
Calorie[ΔHτcC] < 7 J/g
Melting Calorie[ΔHTm] < 30 J/g
Melting Temperature [Tm] - Heating Crystallization Peak
Temperature[Tcc(pea )] < 50 "C
In addition, the present invention characterized by preparing
suckling bottle for infant through next steps under the following
conditions;
- Prepare preform by melting injection the homopolyester resin or copolyester resin comprising 85 mole % - 100 mole %
NDC, and
- Prepare the suckling bottle for infant by re-heating and
blowing molding the prepared preform.
- Condition
Inherent viscosity of homopolyester
or copolyester : 0.68 — 0.83 dC/g
Re-heating temperature of preform : 160 — 210
Drawing ratio of vertical and horizontal direction
during blowing molding : 1.5 — 2.5 times
The detail illustration on the present invention shall be
followed hereunder.
First of all, the copolyester resin applied in the present
invention is prepared by melting copolymerization of [ i ] NDC,
[ ii ] dimethylterephthlate(hereinafter called "DMT") or terephthal
acid (hereinafter called "TPA" ) and [ϋi ] ethylene glycol (hereinafter
called "EG").
In this preparation, the content of NDC is 85mole% ~ 99mole%
and that of DMT or TPA is lmole% ~ 15mole%. Meantime, the homopolyester resin applied in the present
invention is prepared by melting polymerization of [ i ] NDC, and
[ ii ] EG.
In general, the more content of NDC, the less crystallization
of resin itself. In order to supplement this problem, it is possible to
control the inherent viscosity of resin by solid-polymerization the
copolymerized resin.
Control the inherent viscosity of polymerized or
copolymerized resin at 0.68— 0.83 dd/g, more preferably at 0.71 —0.76
C/g. If the inherent viscosity is below than 0.68dVg, heat
resistance, especially repetitious heat resistance shall be
deteriorated; whereas the inherent viscosity is over than 0.83d£/g,
the post processing shall be difficult.
Next step is to prepare preform by melting injection the
prepared homopolyester or copolyester. In this process, both
1-Stage machine and 2-Stage machine are applicable.
Nisse ASB-100 is applicable for 1-Stage machine. During
heat sterilization the suckling bottle, the weakest part to
deformation of the bottle is lower part of side vertical where has most changes during blowing molding. Accordingly, it is desirable
to maintain less than 10% of thickness difference between the
upper part of vertical side and lower part of vertical side of the
suckling bottle during Preform design. If the said thickness
difference is more than 10%, the repetitious heat resistance shall be
deteriorated.
For the next step to prepare suckling bottle for infant are;
- Re-heating the said preform at 160 — 210 "C in pot, and
- Blowing molding at 1 ~ lOkgf/cπ blowing pressure in blow
mold.
If the re-heating temperature in pot is lower than 160 , it is
not possible to prepare a suckling bottle having equal thickness due
to necking during blowing molding. Further, the deformation
happens easily at secondary transfer temperature (Tg) due to
remaining high stress after blowing. (Graph 1 and 2 in Figure 2)
Especially, the necking draw part shall change white color
due to crystallization, and the quality of suckling bottle shall be
deteriorated with uneven thickness.
Meanwhile, if the re-heating temperature in pot is higher than 210 "C , the droop happens in the said preform. Then finally it
is not possible to prepare a suckling bottle since the preform can
not bear the air pressure during the blowing molding. (Graph 4 in
Figure 2)
In addition, control the drawing ratio of vertical and
horizontal direction at 1.5 — 2.5 times during blowing molding, (part
B of Figure 2)
If the drawing ratio is less than 1.5 times, the deformation of
copolymer shall be made like elastic deformation other than
permanent deformation, even though the proper drawing
temperature is maintained. As a result, the suckling bottle shall be
deformed easily during sterilization in boiling water because of the
remained stress inside the bottle after drawing, (part A of Figure
2).
If the drawing ratio is over than 2.5 times, the orientation or
crystallization of copolymer shall be accompanied, and the suckling
bottle shall be deformed easily during sterilization in boiling water
due to latent high stress in the bottle, (part D of Figure 2)
The suckling bottle of the present invention is composition of Homopolyester resin or Copolyester resin comprising 85 mole % -
100 mole % NDC, and the repetitious heat resistance is more than
30 times.
As a result, it has excellent transparency and burst
resistance, and does not exhaust any environmental hormone during
sterilization in boiling water. The suckling bottle of the present
invention, especially, is economical since its repetitious heat
resistance is more than 30 times.
In addition, the suckling bottle of the present invention has
less than 10% of thickness difference between the lower part of
vertical side and bottom part of the bottle.
The suckling bottle of the present invention shows following
crystallization behavior when the temperature is increased at the
speed of 101 ! /minute in differential scanning calorimeter (
hereinafter called "DSC"):
First of all, the melting calorie (hereinafter called "ΔHTm") is
less than 30 J/g, and the difference of ΔHTm and heating
crystallization calorie (hereinafter called "ΔHTCC") is less than 7
J/g[ΔHTm - ΔHTCC < 7 J/g]. ΔHτ_n, a total necessary calorie for melting all crystal part of
the material inside, is in proportion to the total quantity of crystal
part that the material comprises, whereas, ΔHτcc,a total necessary
calorie for crystallizing all non-crystal part of the material inside,
is in proportion to the total quantity of non-crystal part that the
material comprises. Accordingly, if the value of ΔHτm - ΔHτCc is
large, it means as such progress of crystallization during blow
molding.
The present invention, in addition, the difference of melting
temperature (Tm) and heating crystallization peak temperature
(hereinafter called "Tcc(peak)"), again, the value of [Tm - Tcc(peak)] is
below than 50 "C . Tec, the temperature that non-crystal part
existing inside of material crystalizes by heating, shall be decreased
if there are much of non-crystal part or inside stress in material.
Secondary transfer temperature (Tg) is in proportion to the
quantity of non-crystal part of the material, and melting
temperature(Tm) is in proportion to the quantity crystal part of the
material.
Figure 2 is the crystallization behavior(Heating Curve) of homopolyester or copolyester of the present invention in DSC. Since
the present invention meets the said crystallization behavior in
DSC, it has little drawing stress during blow molding which
enables even drawing and minimum remaining stress. As a result,
both the heat resistance and transparency shall be elevated;
whereas the thickness error shall be minimized.
In the suckling bottle of the present invention, the thickness
difference of has less than 10% between the upper part of vertical
side (hereinafter called "Panel 1") of the bottle and the lower part of
vertical side (hereinafter called "Panel 3") of the bottle.
The properties of the present invention are evaluated by the
following methods:
Repetitious Heat Resistance (Times of Boiling Water
Sterilization)
Measure the shape and property change of infant suckling
bottle by repeating following steps;
- 2 minutes sterilization in boiling water, and
- leave the suckling bottle as it is for 30 minutes on normal
temperature. Comparing to the shape and property change of suckling
bottle prior to the sterilization in boiling water, check the times of
the sterilization as repetitious heat resistance within the limits of
±5% bottle capacity, +1 haze change (absolute value of haze is less
than 5).
Size change of vertical side (IV) of the bottle
Compare and measure, before and after the sterilization in
boiling water, each of following outer diameter of bottle the 80 —
95% upper part from whole vertical (IV) side [(part I of Figure
1)-Panel 1], 50 — 70% middle part from whole vertical(IV) side[(part
II of Figure 1) -hereinafter called "Panel 2")] and 5 — 25% lower part
from whole vertical(IV) side[(part HI of Figure 1)-Panel 3].
Haze change
Extract Panel 3 (HI) out of the vertical side of the suckling
bottle, and measure the haze with Nippon Denshoku NDH 300, a
haze-meter.
Light Transmission (TT)
Extract Panel 3 (HI) out of the vertical side of the suckling
bottle, and measure the haze with Nippon Denshoku NDH 300, a haze-meter. (Transmission Mode)
Temperature ResistanceCC )
Measure the capacity, height, and side diameter of the bottle
after 6 hours heating treatment with hot air in oven. Comparing
to the values measured prior to the heating treatment in oven,
check the maximum temperature of hot air of the oven which
maintains within the limits of ±5% bottle capacity, ±3% diameter
change.
Thickness Error(mm)
Measure the difference of maximum and minimum
thicknesses of lower part of vertical side(Panel 3)
BRIEF DESCRIPTION OF DRAWINGS
Figure 1 is a cross section of suckling bottle of the present
invention.
Figure 2 is a graph which represents drawing behavior
(co-relation of drawing ratio and drawing stress) pursuant to the
temperature of suckling bottle resin of the present invention.
Figure 3 is a graph which represents heating curve on DSC of suckling bottle resin of the present invention.
Legend for the main part of Figures
A "- Elastic deformation part B : Even drawing part
C : Necking drawing part D : Orietation/Crystallization part
1 : Drawing behavior graph when drawing temperature is 150 T_
2 : Drawing behavior graph when drawing temperature is 160 TJ
3 : Drawing behavior graph when drawing temperature is 195T.
4 : Drawing behavior graph when drawing temperature is 215 T.
Tg : Secondary glass transfer temperature
Cp : Heat calorie of secondary glass transfer
ΔHTCC : Heating crystallization calorie ΔHτm : Melting calorie
Tm : Melting temperature
Tcc(onset) : Heating crystallization onset temperature
cc(peak) : Heating crystallization peak temperature
I : Panel 1 II : Panel 2 : Panel 3
IV Total height of vertical part of the suckling bottle
BEST MODE FOR CARRYING OUT THE INVENTION
The present invention will be discussed more particularly
through following examples and comparative examples. The present invention however, does not limited only to these examples
Example 1
After add 92mole% of NDC in the mixture of DMT and EG,
and prepare copolyester resin having 0.73d£/g inherent viscosity by
melting copolymerization. Put the said copolyester resin in melting
injector having l-Stage(Nisse ASB IOO), and prepare preform by
melting injection.
After re-heating the said preform at 195 "C in pot, then
prepare suckling bottle for infant by blowing molding at the blow
pressure of 3kgf/cπf in blow mold.
In this process, the drawing ratio of horizontal direction is
1.8 times and that of vertical direction is 2.0 times. The thickness
of Panel 1 of the prepared suckling bottle is 1.29mm, and that of
Panel 3 is 1.26mm.
Table 1 is the measurement results of shape and property
change through the 10, 20, 30, 60 and 90 times boiling water
sterilization of the prepared suckling bottle for infant. Table 4 is
the evaluation results of heat resistance and crystallization behavior on DSC.
[Table 11 Measurement result of shape and property change
Figure imgf000020_0001
Examples 2 — 8 and Comparative Examples 1 —6
Except the changes of inherent viscosity for copolyester,
re-heating temperature of preform, drawing ratio, and panel
thickness as table 2, prepare the suckling bottle for infant in same
process and condition. Table 3 is the measurement results of shape
and property change through the 30, and 60 times boiling water
sterilization of the prepared suckling bottle for infant. Table 4 is
the evaluation results of heat resistance and crystallization behavior
on DSC. [Table 2] Preparing Condition
Figure imgf000021_0001
Example 9
Prepare homopolyester resin having 0.73d(./g inherent
viscosity by melting polymerization the EG and NDC(100mole%).
Put the said homopolyester resin in melting injector having
l-Stage(Nisse ASB-100), and prepare preform by melting injection.
After re-heating the said preform at 195 T in pot, then
prepare suckling bottle for infant by blowing molding at the blow
pressure of 3kgf/cπ in blow mold.
In this process, the drawing ratio of horizontal direction is 1.8 times and that of vertical direction is 2.0 times. The thickness
of Panel 1 of the prepared suckling bottle is 1.29mm, and that of
Panel 3 is 1.26mm.
The measurement results of shape and property change
s through the 30 and 60 times boiling water sterilization of the
prepared suckling bottle for infant are included in Table 3. The
evaluation results of heat resistance and crystallization behavior on
DSC are included in Table 4.
0 [Table 3] Measurement result of shape and property change
5
Figure imgf000022_0001
[Table 4] DSC crystallization behavior and heat resistance Evaluation
Figure imgf000023_0001
INDUSTRIAL APPLICABILITY
The suckling bottle of the present invention is transparent,
not fragile, and very sanitary since it does not exhaust any
environmental hormone during sterilization treatment in boiling
water. Particularly, the suckling bottle of the present invention is
very economical since it has excellent heat resistance; in other
words, the suckling bottle of the present invention could maintain
its shape and property after much more times of boiling water
sterilization than the conventional suckling bottle.

Claims

WHAT IS CLAIMED IS
1. A suckling bottle for infant, characterized in that the
bottle is composed of homopolyester resin or copolyester resin
comprising 85 mole% - 100 mole% of dimethyl -2,6-naphthalene
dicarboxylate (NDC), and its less changes than ±5% in capacity,
than +1 in haze from more than 30 times repetitious process of 2
minutes sterilization in boiling water, then leave the suckling bottle
for 30 minutes on normal temperature (repetitious heat resistance is
more than 30 times).
2. A suckling bottle for infant as claimed in claim 1,
characterized in that the said copolyester is composed of 85 mole%
- 99 mole% of dimethyl-2,6-naphthalene dicarboxylate (NDC) and 1
mole% - 15 mole of dimethylterephthlate(DMT) or terephthal
acid (TPA).
3. A suckling bottle for infant as claimed in claim 1,
characterized in that the thickness difference is less than 10% between the upper part (Panel 1) of vertical side and lower
part (Panel 3) of vertical side of the bottle.
4. A suckling bottle for infant as claimed in claim 1,
characterized in that the size change of vertical side is less than ±
3% from more than 30 times repetitious piocess of 2 minutes
sterilization in boiling water, then leave the suckling bottle for 30
minutes on normal temperature.
5. A suckling bottle for infant as claimed in claim 1,
characterized in that the change of direct light transmission (TT) is
less than 3% from more than 30 times repetitious process of 2
minutes sterilization in boiling water, then leave the suckling bottle
for 30 minutes on normal temperature.
6. A method of producing a suckling bottle for infant,
characterized in that firstly, prepare preform by melting injection
the homopolyester resin or copolyester resin comprising 85 mole %
- 100 mole % of dimethyl-2,6-naphthalene dicarboxylate (NDC), and then produce the suckling bottle for infant by re-heating and
blowing molding the prepared Preform under the following
conditions '■.
Condition
Inherent viscosity of homopolyester
or copolyester: 0.68 ~ 0.83 d£/g
Re-heating temperature of preform : 160 ~ 210 T
Drawing ratio of vertical and horizontal direction
during blowing molding '■ 1.5 — 2.5 times
7. The method of producing a suckling bottle for infant as
claimed in claim 6, characterized in that the inherent viscosity of
homopolyester or copolyester is 0.71 ~0.76dC/g.
8. The method of producing a suckling bottle for infant as
claimed in claim 6, characterized in that the re heating temperature
of preform is 185 ~ 200 "C .
9. A suckling bottle for infant, characterized in that the bottle is composed of homopolyester resin or copolyester resin
comprising 85 mole% - 100 mole% of dimethyl-2,6-naphthalene
dicarboxylate (NDC), and has following properties.
- Properties -
Melting Calorie[ΔHτm] ~ Heating Crystallization
Calorie [ΔHTCC] < 7 J/g
- Melting Calorie[ΔHTm] < 30 J/g
Melting Temperature [Tm] - Heating Crystallization Peak
Temperature [Tec (peak)] < 50 T_
10. A suckling bottle for infant as claimed in claim 9,
characterized in that the said copolyester is composed of more than
85 mole%(100mole% excluded) of dimethyl-2,6-naphthalene
dicarboxylate (NDC) and below than 15 mole%(0mole% excluded) of
dimethylterephthlate(DMT) or terephthal acid (TPA).
11. A suckling bottle for infant as claimed in claim 9,
characterized in that the thickness difference is less than 10%
between the upper part (Panel 1) of vertical side and lower part(Panel 3) of vertical side of the bottle.
12. A suckling bottle for infant as claimed in claim 9,
characterized in that the inherent viscosity of homopolyester or
copolyester is 0.68 ~ 0.83 d£/g.
PCT/KR2000/000804 1999-07-26 2000-07-26 A suckling bottle for baby, and a process of preparing the same WO2001006981A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU60257/00A AU6025700A (en) 1999-07-26 2000-07-26 A suckling bottle for baby, and a process of preparing the same

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR1999/30300 1999-07-26
KR1019990030299A KR20000049313A (en) 1999-07-26 1999-07-26 A suckling bottle for a baby, and a process of preparing the same
KR1019990030300A KR20000049314A (en) 1999-07-26 1999-07-26 An excellent heat-resistance and transparency bottle
KR1999/30299 1999-07-26

Publications (1)

Publication Number Publication Date
WO2001006981A1 true WO2001006981A1 (en) 2001-02-01

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PCT/KR2000/000804 WO2001006981A1 (en) 1999-07-26 2000-07-26 A suckling bottle for baby, and a process of preparing the same

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Cited By (5)

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Publication number Priority date Publication date Assignee Title
WO2007001556A1 (en) * 2005-06-17 2007-01-04 Eastman Chemical Company Infant care sterilization containers comprising polyester compositions formed fr0m 2,2,4,4-tetramethyl-1, 3-cyclobutanediol and 1,4-cylohexanedimethanol
US8895654B2 (en) 2008-12-18 2014-11-25 Eastman Chemical Company Polyester compositions which comprise spiro-glycol, cyclohexanedimethanol, and terephthalic acid
US9169388B2 (en) 2006-03-28 2015-10-27 Eastman Chemical Company Polyester compositions which comprise cyclobutanediol and certain thermal stabilizers, and/or reaction products thereof
US9598533B2 (en) 2005-11-22 2017-03-21 Eastman Chemical Company Polyester compositions containing cyclobutanediol having a certain combination of inherent viscosity and moderate glass transition temperature and articles made therefrom
US9982125B2 (en) 2012-02-16 2018-05-29 Eastman Chemical Company Clear semi-crystalline articles with improved heat resistance

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55100131A (en) * 1979-01-26 1980-07-30 Yoshino Kogyosho Co Ltd Pearl-glossy synthetic resin bottle and its manufacture

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55100131A (en) * 1979-01-26 1980-07-30 Yoshino Kogyosho Co Ltd Pearl-glossy synthetic resin bottle and its manufacture

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