Heat- and pressure-resistant polyester bottle and process for producing the same
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B32B-001/02
B32B-001/08
출원번호
US-0666755
(2007-06-26)
등록번호
US-8815354
(2014-08-26)
국제출원번호
PCT/JP2007/063196
(2007-06-26)
§371/§102 date
20091224
(20091224)
국제공개번호
WO2009/001475
(2008-12-31)
발명자
/ 주소
Komiya, Atsushi
Satoh, Yuki
Okabe, Koki
Ookubo, Takahiro
출원인 / 주소
Toyo Seikan Kaisha, Ltd.
대리인 / 주소
Sughrue Mion, PLLC
인용정보
피인용 횟수 :
0인용 특허 :
18
초록▼
A process for producing a heat- and pressure-resistant polyester bottle, comprising a primary blow-molding step of obtaining a primary molded article by biaxially stretch-blow-molding a preform of a polyester resin, a heat-treating step of obtaining a secondary molded article that is heat-shrunk by
A process for producing a heat- and pressure-resistant polyester bottle, comprising a primary blow-molding step of obtaining a primary molded article by biaxially stretch-blow-molding a preform of a polyester resin, a heat-treating step of obtaining a secondary molded article that is heat-shrunk by heat-treating the primary molded article, and a secondary blow-molding step of obtaining a finally molded article by biaxially stretch-blow-molding the secondary molded article, wherein the primary blow-molding step biaxially stretches the neck portion of the primary molded article to a size nearly the same as the neck portion of the finally molded article, and the heat-treating step does not cause the neck portion of the secondary molded article to be heat-shrunk. The heat- and pressure-resistant polyester bottle has a slender neck portion of the shape of a so-called crane neck and is suited for containing beer without eradicating the impression of the traditional glass-bottled beer, wherein the length of the neck portion is in a range of 10 to 40% of the height of the bottle, the crystallinity of the neck portion is in a range of 20 to 35%, and the crystallinity of the body portion is in a range of 35 to 50%.
대표청구항▼
1. A heat- and pressure-resistant polyester bottle including a mouth portion, a neck portion, a shoulder portion, a body portion and a bottom portion obtained by biaxially stretch-blow-molding a whole preform of a polyester resin excluding the mouth portion, wherein the length of said neck portion i
1. A heat- and pressure-resistant polyester bottle including a mouth portion, a neck portion, a shoulder portion, a body portion and a bottom portion obtained by biaxially stretch-blow-molding a whole preform of a polyester resin excluding the mouth portion, wherein the length of said neck portion is in a range of 10 to 40% of the height of the bottle excluding the mouth portion, the crystallinity of the neck portion is in a range of 20 to 35%, and the crystallinity of the body portion is in a range of 35 to 50%. 2. The heat- and pressure-resistant polyester bottle according to claim 1, wherein a coefficient of moisture absorption of the body portion after preserved under the conditions of a temperature of 30° C. and a humidity of 80% RH for 7 days is not more than 3000 ppm. 3. The heat- and pressure-rstant polyester bottle according to claim 1, wherein a change of volume after filled with a carbonated solution adjusted to gas volume (GV) of 3.3 and, thereafter, sterilized under the conditions of 65° C. for 30 minutes, is not more than 4.0%. 4. A process for producing the heat- and pressure-resistant polyester bottle as claimed in claim 1, comprising a primary blow-molding step of obtaining a primary molded article by biaxially stretch-blow-molding a whole preform of a polyester resin excluding the mouth portion, a heat-treating step of obtaining a secondary molded article that is heat-shrunk by heat-treating the primary molded article, and a secondary blow-molding step of obtaining a finally molded article by biaxially stretch-blow-molding the secondary molded article, wherein the primary blow-molding step biaxially stretches the neck portion of the primary molded article to a size nearly the same as the neck portion of the finally molded article, and the heat-treating step does not cause the neck portion of the secondary molded article to be heat-shrunk. 5. The process for producing a heat- and pressure-resistant polyester bottle according to claim 4, wherein the amount of work represented by a volume ratio of the finally molded article in the secondary blow-molding step is 20 to 40 vol %. 6. The process for producing a heat- and pressure-resistant polyester bottle according to claim 4, wherein a metal mold temperature of a portion corresponding to the neck portion of the primary molded article in said primary blow-molding step is in a range of 15 to 60° C. while a metal mold temperature corresponding to other portions of the primary molded article is in a range of 60 to 150° C. 7. The process for producing a heat- and pressure-resistant polyester bottle according to claim 4, wherein a heating temperature at the body portion in said heat-treating step is in a range of 120 to 210° C. 8. The process for producing a heat- and pressure-resistant polyester bottle according to claim 4, wherein a metal mold temperature in said secondary blow-molding step is in a range of 15 to 60° C.
Jakobsen Kjell M. (Skanor SEX) Nilsson Claes T. (Loddekpinge SEX), Apparatus for producing a biaxially oriented container of polyethylene terephthalate or similar material.
Krishnakumar Suppayan M. (Nashua NH) Collette Wayne N. (Merrimack NH) Nahill Thomas E. (Amherst NH), Method of making a refillable polyester container.
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