Mold for blow molding a hot-fill container with increased stretch ratios
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B29C-049/48
B29C-049/54
B29C-049/28
B29B-011/14
B65D-079/00
B65D-001/02
B29L-031/00
B29B-011/08
B29B-011/12
B29K-067/00
B29C-049/12
B29C-049/42
출원번호
US-0762900
(2014-01-22)
등록번호
US-9757891
(2017-09-12)
우선권정보
EP-13305143 (2013-02-06)
국제출원번호
PCT/EP2014/051202
(2014-01-22)
국제공개번호
WO2014/122018
(2014-08-14)
발명자
/ 주소
Bunel, Christophe
Godet, Florian
출원인 / 주소
SIDEL PARTICIPATIONS
대리인 / 주소
Young & Thompson
인용정보
피인용 횟수 :
0인용 특허 :
7
초록▼
A mold for blow molding a container from a preform, the container including a wall portion and a base including a high standing ring and a central outwardly-inclined invertible diaphragm, the mold including sidewalls forming a counter print of the wall portion of the container (1) and a mold base (3
A mold for blow molding a container from a preform, the container including a wall portion and a base including a high standing ring and a central outwardly-inclined invertible diaphragm, the mold including sidewalls forming a counter print of the wall portion of the container (1) and a mold base (36) having an upper surface (37) defining a counter print of the container base, wherein the upper surface (37) includes: an annular peripheral face (43) corresponding to an annular support flange of the container base; a frusto-conical outer face (44) corresponding to an inner portion (11) of the high standing ring, the outer face (44) protruding upwardly with a draft angle (A2) from an inner edge of the peripheral annular face (43) up to a sharp apex (45), and a frusto-conical downwardly inclined inner face (46) corresponding to the invertible diaphragm.
대표청구항▼
1. A mold (32) for blow molding a container (1) from a preform (16), said container (1) comprising a wall portion (5) and a base (7) including a high standing ring (8) and a central outwardly-inclined invertible diaphragm (9), said mold (32) comprising sidewalls (34A, 34B) forming a counter print of
1. A mold (32) for blow molding a container (1) from a preform (16), said container (1) comprising a wall portion (5) and a base (7) including a high standing ring (8) and a central outwardly-inclined invertible diaphragm (9), said mold (32) comprising sidewalls (34A, 34B) forming a counter print of the wall portion (5) of the container (1) and a mold base (36) having an upper surface (37) defining a counter print of the container base (7), wherein the upper surface (37) includes: an annular peripheral face (43) corresponding to an annular support flange (12) of the container base (7),a frusto-conical outer face (44) corresponding to an inner portion (11) of the high standing ring (8), said outer face (44) protruding upwardly with a draft angle (A2) from an inner edge of the peripheral annular face (43) up to a sharp apex (45),a frusto-conical downwardly inclined inner face (46) corresponding to the invertible diaphragm (9), and wherein: the annular peripheral face (43) is in the shape of a frustum of a cone and shows an inward inclination in a transversal section,the peripheral face (43) defines, with respect of a plane (P) perpendicular to a mold base axis, an angle (A1) comprised between 1° and 10°, andthe outer face (44) and the inner face (46) of the upper surface (37) together define at the apex (45) an angle (A3) comprised between 50° and 70°. 2. A mold (32) according to claim 1, wherein said angle (A1) is of about 3°. 3. A mold (32) according to claim 1, wherein the draft angle (A2) is comprised between 1° and 10°. 4. A mold (32) according to claim 3, wherein the draft angle (A2) is of about 4.5°. 5. A mold (32) according to claim 1, wherein the angle (A3) at the apex (45) is comprised between 60° and 65°. 6. A mold (32) according to claim 5, wherein the angle (A3) at the apex (45) is of about 63°. 7. A mold (32) according to claim 1, wherein the apex (45) has a radius (R) of curvature of less than or equal to 1.5 mm. 8. A mold (32) according to claim 1, wherein the inner face (46) of the upper surface (37) extends from the apex (45) down to an annular inner edge (47) where the inner face (46) connects to a central uprising push-up (48) corresponding to a central recess (15) in the container base (7). 9. A mold (32) according to claim 8, wherein the inner edge (47) of the inner face (46) defines with a peripheral plane (P) defined by an outer edge of the peripheral face a clearance (CL) comprised between 1 mm and 5 mm. 10. A mold (32) according to claim 9, wherein the clearance (CL) is of about 2 mm. 11. A mold (32) according to claim 1, wherein the mold base (36) is movable with respect of the sidewall (34), between a retracted position in which the upper surface (37) extends below the container base (7) to be formed, and a raised position in which the upper surface (37) closes the cavity (35). 12. A mold (32) according to claim 2, wherein the draft angle (A2) is comprised between 1° and 10°.
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이 특허에 인용된 특허 (7)
Cheng, J. John; Yuan, XiaoXu, Base for plastic container.
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