CN108367458A - 具有凹形主体部分的预型件 - Google Patents
具有凹形主体部分的预型件 Download PDFInfo
- Publication number
- CN108367458A CN108367458A CN201680073722.7A CN201680073722A CN108367458A CN 108367458 A CN108367458 A CN 108367458A CN 201680073722 A CN201680073722 A CN 201680073722A CN 108367458 A CN108367458 A CN 108367458A
- Authority
- CN
- China
- Prior art keywords
- main body
- preform
- plastic container
- container preform
- concave portions
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B11/00—Making preforms
- B29B11/14—Making preforms characterised by structure or composition
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/0005—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor characterised by the material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/071—Preforms or parisons characterised by their configuration, e.g. geometry, dimensions or physical properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/64—Heating or cooling preforms, parisons or blown articles
- B29C49/6409—Thermal conditioning of preforms
- B29C49/6418—Heating of preforms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
- B29C2049/023—Combined blow-moulding and manufacture of the preform or the parison using inherent heat of the preform, i.e. 1 step blow moulding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/07—Preforms or parisons characterised by their configuration
- B29C2949/0715—Preforms or parisons characterised by their configuration the preform having one end closed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/07—Preforms or parisons characterised by their configuration
- B29C2949/072—Preforms or parisons characterised by their configuration having variable wall thickness
- B29C2949/0724—Preforms or parisons characterised by their configuration having variable wall thickness at body portion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/07—Preforms or parisons characterised by their configuration
- B29C2949/073—Preforms or parisons characterised by their configuration having variable diameter
- B29C2949/0733—Preforms or parisons characterised by their configuration having variable diameter at body portion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/07—Preforms or parisons characterised by their configuration
- B29C2949/076—Preforms or parisons characterised by their configuration characterised by the shape
- B29C2949/0768—Preforms or parisons characterised by their configuration characterised by the shape characterised by the shape of specific parts of preform
- B29C2949/0779—Preforms or parisons characterised by their configuration characterised by the shape characterised by the shape of specific parts of preform characterised by the body
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/07—Preforms or parisons characterised by their configuration
- B29C2949/076—Preforms or parisons characterised by their configuration characterised by the shape
- B29C2949/0768—Preforms or parisons characterised by their configuration characterised by the shape characterised by the shape of specific parts of preform
- B29C2949/078—Preforms or parisons characterised by their configuration characterised by the shape characterised by the shape of specific parts of preform characterised by the bottom
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/07—Preforms or parisons characterised by their configuration
- B29C2949/081—Specified dimensions, e.g. values or ranges
- B29C2949/0811—Wall thickness
- B29C2949/0817—Wall thickness of the body
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/07—Preforms or parisons characterised by their configuration
- B29C2949/081—Specified dimensions, e.g. values or ranges
- B29C2949/082—Diameter
- B29C2949/0826—Diameter of the body
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/07—Preforms or parisons characterised by their configuration
- B29C2949/081—Specified dimensions, e.g. values or ranges
- B29C2949/082—Diameter
- B29C2949/0827—Diameter of the bottom
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/07—Preforms or parisons characterised by their configuration
- B29C2949/081—Specified dimensions, e.g. values or ranges
- B29C2949/0829—Height, length
- B29C2949/0835—Height, length of the body
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/07—Preforms or parisons characterised by their configuration
- B29C2949/081—Specified dimensions, e.g. values or ranges
- B29C2949/0849—Curvature, e.g. radius
- B29C2949/0855—Curvature, e.g. radius of the body
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/20—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer
- B29C2949/22—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer at neck portion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/20—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer
- B29C2949/24—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer at flange portion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/20—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer
- B29C2949/26—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer at body portion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/20—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer
- B29C2949/28—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer at bottom portion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
- B29C49/06—Injection blow-moulding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2067/00—Use of polyesters or derivatives thereof, as moulding material
- B29K2067/003—PET, i.e. poylethylene terephthalate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/712—Containers; Packaging elements or accessories, Packages
- B29L2031/7158—Bottles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Geometry (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
一种塑料制容器预型件,具有:主体(3);开放的颈部(5),颈部接续主体(3)延伸,颈部通过径向突出的环箍(6)与主体分开;底部(7),与颈部(5)相对地封闭主体(3);主体(3)在轴向截面上具有凹形部分(11),其中:B≤0.9A,0.5C≤C'≤0.95C,其中,A是在环箍(6)之下测得的主体(3)的总直径;B是在底部与主体(3)的接合处测得的底部(7)的外径;C是从环箍(6)起测得的主体(3)和底部(7)的累计高度;C'是轴向测得的主体(3)的凹形部分(11)的高度,并且凹形部分(11)在轴向截面上,在外表面(10)上的外曲率半径RE如下:1.5C≤RE≤10C。
Description
技术领域
本发明涉及利用塑料制预型件、尤其是聚对苯二甲酸二乙酯(PET)制预型件来制造容器。
更确切的说,本发明涉及一种预型件,该预型件用于在具有容器型腔的模具中或以自由方式(即无模具)通过吹制或者拉吹来成型容器。
背景技术
容器通常具有侧壁、颈部和底部,所述侧壁一般呈回转对称,沿中央轴线延伸,所述颈部接续侧壁延伸,容器用于通过颈部进行灌装和排出,所述底部从主体的下端部横向延伸,容器用于通过底部放置在平表面上。
预型件通常具有主体、开放的颈部以及底部,预型件的主体具有基本上呈圆柱形的形状(用于形成容器的侧壁),所述开放的颈部接续主体从主体上端部延伸,颈部通过环箍与主体分开(在容器成型过程中,颈部保持不变),预型件的底部在主体下端部封闭主体(用于形成容器的底部)。
为了基于预型件形成容器,以将预型件的主体和底部加热到高于材料的玻璃化转变温度(对于PET来说,其约为80℃)的温度开始。然后,在预型件中注入压力流体(通常是空气),预型件的主体经受同时轴向和径向的膨胀,直至达到所需的容器主体形状。一般来说,轴向膨胀借助棒通过拉伸而成。
加热一般在加热单元(也称为炉)中进行,其配有辐照预型件的多个红外辐射源。这些红外辐射源一般是卤素灯,在包括短红外线(可能还有一部分中红外线外)以及至少一部分可见光谱的相当宽的光谱上辐射。卤素灯的主要缺陷是方向性差(甚至不存在方向性),使用寿命比较短。
一种替换的加热技术处于开发过程中,基于利用单色(或者准单色)辐射源,这种辐射源提供更好的方向性,使用寿命较长,参见例如欧洲专利申请EP2720842(Sidel公司),该申请提出一种利用垂直腔面发射激光器(VCSEL)型的激光二极管矩阵加热预型件的方法。
该新技术对各种形状的预型件进行过的许多试验表明:必须继续改进该技术,因为注意到在预型件中存在材料过热区域,仍不能免除其辐射源能量分配的精细调节。由此看来还需要对预型件的外形和尺寸再加工。
发明内容
因此一目的是提出一种预型件,其在暴露于单色或者准单色红外辐射时,可比较均匀地被加热,即没有不希望的局部过热区域。
为此,首先提出在一种塑料容器预型件,具有:
-围绕中央轴线呈回转对称的主体;
-开放的颈部,颈部接续主体延伸,颈部通过径向突出的环箍与主体分开;
-底部,其与颈部相对地封闭主体;
其中,主体在轴向截面上具有凹形部分,并且:
B≤0.9A
0.5C≤C’≤0.95C
其中,A是在环箍下测得的主体的总直径;
B是在底部与主体的接合处测得的底部的外径;
C是从环箍起测得的主体和底部的累计高度;
C'是轴向测得的主体的凹形部分的高度,
并且,在轴向截面上,凹形部分11在外表面10上的外曲率半径RE如下:
1.5C≤RE≤10C。
这些特征有助于最大限度地减小材料中的折射,有利于提高加热质量。
根据一种具体实施方式:
0.65C≤C’≤0.85C。
此外,预型件可满足以下条件:
H≤G
其中,G是在凹形部分的下端部测得的预型件的壁厚;
H是在凹形部分的上端部测得的预型件的壁厚;
其中优选地:
H≤0.9G。
可以满足以下附加条件:
H≥0.5G。
其中优选地:
H≥0.7G。
其次还提出一种通过吹制或者拉吹制造容器的方法,包括:
-提供如上所述的预型件;
-通过暴露于预定强度的单色或者准单色红外辐射来加热预型件的主体;
-在这样被加热的预型件中注入压力流体而成型容器。
有利地,所述方法在加热和成型之间还包括将预型件输入到具有容器型腔的模具中。
附图说明
通过下文参照附图对实施方式进行的描述,本发明的其它目的和优点将体现出来,附图中:
图1是根据第一种实施方式的容器预型件的剖面图;
图2是根据第二种实施方式的容器预型件的剖面图;
图3是根据第三种实施方式的容器预型件的剖面图;
图4是示意图,示出基于预型件制造容器。
具体实施方式
图1、2和3中每个均示出塑料例如PET(polytéréphtalated'éthylène)制的预型件1,容器2(如图4上虚线所示)用于利用该预型件通过吹制或者拉吹而形成。首先,每个预型件1具有主体3,主体围绕中央轴线X回转对称地延伸。
预型件1的主体3用于形成容器2的主体4。
其次,每个预型件1具有开放的颈部5,颈部接续主体从主体3的上端部开始延伸。颈部5具有其最终形状,在容器2整个成型过程中该颈部始终保持这种形状。
颈部5终止于径向突出的环箍6,环箍分开颈部5与主体3,在预型件1输送、加热或者成型(然后分别是容器2的灌装、封口和贴标签)的各种操作期间,预型件1(然后是容器2)通过环箍进行悬挂、或者更一般来说保持。
第三,每个预型件1具有底部7,底部从主体3的下端部8封闭主体3,即底部7的材料从主体3的下端部8起延伸,以径向接合中央轴线X,因而在与颈部5相反的方向上封闭预型件1。主体3和底部7围绕中央轴线X回转对称,即它们在整个纵向剖面(换句话说,其通过中央轴线X,相应于图页平面)中不变。
预型件1具有内表面9和外表面10。下文中,术语“凹形”和“凸形”应参照预型件1的内部容积加以理解。换句话说,一个区域如果其凹面朝向预型件1外则称为凹形区域,而反过来,如果其凸面朝向预型件1外,则称为凸形区域。
如图1、2和3每个中所示,预型件1的主体3在轴向截面(即在含有轴线X的任何剖面如图1、2和3的剖面中)具有凹形部分11。
如同所示的实施例中那样,预型件1的主体3可还具有:
-使凹形部分11连接于环箍6的上部连接部分12,和/或
-使凹形部分11连接于底部7的下部连接部分13。
有利地,上部连接部分12在外表面10上呈圆柱形。
至于下部连接部分13,其有利地略有斜度,即其基于圆锥体,圆锥体的顶部在底部7一侧上与预型件1间隔开地位于轴线X上。
出于预型件1成型和尺寸确定的需要,将各标记定义如下:
A表示在环箍6下测得的主体3的总直径;
B表示在底部与主体3的接合处测得的底部7的外径(换句话说,底部7的总直径);
C表示轴向(即平行于轴线X)测得的主体3(包括凹形部分11、上部连接部分12和下部连接部分13)和底部7的累计高度;
C'表示轴向(即平行于轴线X)测得的主体3的凹形部分11的高度;
D表示轴向测得的底部7和下部连接部分13的累计高度;
D'表示轴向测得的上部连接部分12的高度;
RE表示在外表面10上和在纵向剖面中测得的凹形部分11的平均曲率半径;
RF表示在内表面9上和在纵向剖面中测得的凹形部分11的平均曲率半径;
G表示在凹形部分11的下端部(在与下部连接部分13的接合处)测得的预型件1的壁厚;
H表示在凹形部分11的上端部(在与上部连接部分12的接合处)测得的预型件1的壁厚。
直径A和B选择成使得:
B≤0.9A。
此外,主体3的凹形部分11的高度C'选择成使得:
0.5C≤C’≤0.95C。
以及,在轴向截面上,凹形部分11在外表面10上的外曲率半径RE如下:
1.5C≤RE≤10C。
优选地,主体3的凹形部分11的高度C'选择成:
0.65C≤C’≤0.85C。
因此,一方面,主体3的凹形部分11具有明显斜度(与具有基本上呈圆柱形的主体的普通预型件相比较),另一方面,凹形部分11在预型件1的总高度(颈部除外)的很大一部分上延伸。
相对于主体基本上呈圆柱形的普通预型件来说,由此在用单色或准单色红外辐射源(尤其是激光源)进行加热时导致了更好的热响应性。特别是,折射最小化,有利于更好控制加热,限制了出现过热区域的危险。
为进一步使热响应最佳化,能以特殊方式确定上面所列中的其他参数的尺寸。
因此,优选地,主体3的壁厚在凹形部分11的整个高度上基本上恒定,或者连续递减,以避免出现任何弯曲尖脊或者弯曲突然中断。
此外,凹形部分11的上端部处的壁厚H有利地小于凹形部分11的下端部处的壁厚G:
H≤G
其中,优选地:
H≤0.9G
但是优选凹形部分11的下端部处与上端部处的厚度差不过大:
H≥0.5G
其中,优选地:
H≥0.7G
因为预型件1在主体3处比在颈部5处显著更厚,所以为了补偿这种厚度差,在内表面9上于环箍6的高度处配置台阶14。
因为颈部5不得被加热,所以该台阶14的存在不会影响对预型件1的总加热质量。
图1、2和3中分别示出三种不同形状的、但满足上述所有标准的预型件1。
下表提供对于这三种预型件1的上述所列参数的数值(全部以毫米表示):
图1 | 图2 | 图3 | |
A | 24 | 26 | 35.5 |
B | 14.5 | 17.5 | 20.7 |
C | 46 | 70 | 39 |
C' | 36 | 59 | 31 |
D | 7 | 7 | 5 |
D' | 3 | 4 | 3 |
RE | 140 | 450 | 68 |
RF | 136 | 305 | 67 |
G | 1.8 | 3.7 | 2 |
H | 1.6 | 3 | 2 |
图1的预型件1区别于图2和3的预型件之处在于:底部7具有基本上呈半球形的形状,以及在底部7的中央存在从内表面9向内突出的定中销形部15。该销形部15用于在容器2成型期间嵌接到在拉伸棒的一端形成的互补空腔中以确保预型件1定中。
相反,图2和3的预型件1的底部7基本上呈平面。这种形状的优点是最大限度地减小预型件1的材料所传输的辐射的折射,有利于更好地控制加热。
图4中相当示意性地示出用于利用如上所述的一种预型件1来制造容器2的设备16。
该设备16包括加热单元17,加热单元具有多个单色或者准单色红外电磁辐射源18。
理论上,单色辐射源是发射单一频率正弦波的理想源。换句话说,其频谱由谱宽为零的单一谱线(Dirac(狄拉克))组成。
实际上,这种辐射源不存在,实际的辐射源是至多为准单色的源,即其频谱在谱宽较小却非零的频带上延伸,所述频带定中心在辐射强度最大的主频率上。
辐射源18优选呈矩阵布置;例如涉及VCSEL型的激光二极管,每个均发射约1微米波长的数十毫瓦功率的辐射。
设备16还具有成型单元19,其包括至少一个具有容器2型腔的模具20。实际上,成型单元19可具有安装在一个转盘上的一系列模具20。对于每个模具来说,成型单元19具有注塑装置21,注塑装置21具有管嘴22,管嘴适于密封地贴靠在模具20的上表面上,通过分配器24(例如电动阀)连接于压力流体(例如空气)源23。设备还具有控制单元25,控制单元连接于压力流体源23和分配器24,以分别控制压力调节、它们的打开及关闭。
在所示的实施例中,对于每个模具20来说,成型单元19还具有棒26,棒26相对于模具20能滑动地安装以在吹制的同时确保拉伸预型件1。
因此,为了成型容器2,操作如下。
以例如从存放有全部相同的预型件的储存器提供一个如上所述的预型件1而开始。
预型件1的主体3和底部7则在加热单元17内暴露于辐射源18发射的预定强度的单色或者准单色红外辐射而被加热。在加热期间,使预型件1围绕其轴线X转动,以确保其主体3及底部7均匀暴露于辐射中。
鉴于预型件1的例如上述的形状和尺寸确定,观察到该预型件1对其所接收的辐射折射很少。因此,可在材料中较好地分配能量,较好地控制加热,在辐射源18处调节过的功率曲线与预型件1上观察到的热曲线(例如用热成像机获得)之间具有较好的一致性。
然后,将这样被加热的预型件1输入到模具20中,在预型件1中注入来自压力流体源23的压力流体(例如空气)而成型容器2。
注塑成型可包括用棒(参见图4上的棒26)轴向拉制预型件1的步骤。
在变型中,成型可以自由地、即没有模具地进行。
Claims (8)
1.一种塑料制容器预型件(1),塑料制容器预型件具有:
-围绕中央轴线(X)呈回转对称的主体(3);
-开放的颈部(5),颈部接续主体(3)延伸,颈部通过径向突出的环箍(6)与主体分开;
-底部(7),底部在与颈部(5)相反的方向上封闭主体(3);
塑料制容器预型件(1)的特征在于,主体(3)在轴向截面具有凹形部分(11);并且:
B≤0.9A
0.5C≤C’≤0.95C
其中,A是在环箍(6)下测得的主体(3)的总直径;
B是在底部与主体(3)的接合处测得的底部(7)的外径;
C是从环箍(6)起测得的主体(3)和底部(7)的累计高度;
C'是轴向测得的主体(3)的凹形部分(11)的高度;
并且,在轴向截面,凹形部分(11)在外表面(10)上的外曲率半径RE如下:
1.5C≤RE≤10C。
2.根据权利要求1所述的塑料制容器预型件(1),其特征在于:
0.65C≤C’≤0.85C。
3.根据前述权利要求中任一项所述的塑料制容器预型件(1),其特征在于,
H≤G
其中,G是在凹形部分(11)的下端部测得的塑料制容器预型件(1)的壁厚;
H是在凹形部分(11)的上端部测得的塑料制容器预型件(1)的壁厚。
4.根据权利要求3所述的塑料制容器预型件(1),其特征在于:
H≤0.9G。
5.根据权利要求3或4所述的塑料制容器预型件(1),其特征在于:
H≥0.5G。
6.根据权利要求5所述的塑料制容器预型件(1),其特征在于:
H≥0.7G。
7.一种通过吹制或者拉吹制造容器(2)的方法,其特征在于,所述方法包括:
-提供根据前述权利要求中任一项所述的塑料制容器预型件(1);
-通过暴露于预定强度的单色或者准单色红外辐射来加热塑料制容器预型件(1)的主体(3);
-在这样被加热的塑料制容器预型件(1)中注入压力流体而成型容器(2)。
8.根据权利要求9所述的方法,其特征在于,所述方法在加热和成型之间还包括将塑料制容器预型件(1)输入到具有容器(2)型腔的模具(20)中。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1562531 | 2015-12-16 | ||
FR1562531A FR3045435B1 (fr) | 2015-12-16 | 2015-12-16 | Preforme pourvue d'une portion de corps concave |
PCT/FR2016/053148 WO2017103372A1 (fr) | 2015-12-16 | 2016-11-30 | Preforme pourvue d'une portion de corps concave |
Publications (2)
Publication Number | Publication Date |
---|---|
CN108367458A true CN108367458A (zh) | 2018-08-03 |
CN108367458B CN108367458B (zh) | 2021-06-08 |
Family
ID=55411595
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201680073722.7A Active CN108367458B (zh) | 2015-12-16 | 2016-11-30 | 塑料制容器预型件和通过吹制或者拉吹制造容器的方法 |
Country Status (5)
Country | Link |
---|---|
US (1) | US11161292B2 (zh) |
EP (1) | EP3389971B1 (zh) |
CN (1) | CN108367458B (zh) |
FR (1) | FR3045435B1 (zh) |
WO (1) | WO2017103372A1 (zh) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE1028731B1 (nl) * | 2020-10-23 | 2022-05-23 | Gojara Bvba | Mechanische bevestigingsmiddelen voor opname van een ventielbehuizing, voorvorm, container en spuitbus omvattend de mechanische bevestigingsmiddelen |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0106425A2 (en) * | 1982-09-27 | 1984-04-25 | Toyo Seikan Kaisha Limited | Method and apparatus of manufacturing a tubular plastic container |
US4641758A (en) * | 1983-11-22 | 1987-02-10 | Yoshino Kogyosho Co., Ltd. | Blow-molded bottle-shaped container of biaxially oriented thermoplastic synthetic resin with wide port and method of molding the same |
CN1248212A (zh) * | 1997-11-28 | 2000-03-22 | 株式会社青木固研究所 | 用作油漆容器和类似物的注射拉伸吹塑成形的广口容器 |
US20010055657A1 (en) * | 1997-05-22 | 2001-12-27 | Plastipak Packaging, Inc. | Multi-layer container and preform and process for obtaining same |
CN1556742A (zh) * | 2001-07-31 | 2004-12-22 | �����ι�˾ | Pet塑坯和容器如食品瓶子的生产方法,得到的容器和中间体塑坯 |
WO2012092639A2 (de) * | 2011-01-07 | 2012-07-12 | Mould & Matic Solutions Gmbh | Anlage sowie verfahren zur herstellung von hohlkörpern durch spritzgiessen und blasformen |
CN103038035A (zh) * | 2010-06-24 | 2013-04-10 | 阿尔温莱纳股份有限两合公司阿尔普拉工厂 | 用于以拉伸吹塑成型工艺来制造塑料容器的预型坯以及用于制造预型坯的方法 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2976514B1 (fr) | 2011-06-17 | 2013-07-12 | Sidel Participations | Procede de chauffe d'ebauches de recipients |
-
2015
- 2015-12-16 FR FR1562531A patent/FR3045435B1/fr not_active Expired - Fee Related
-
2016
- 2016-11-30 WO PCT/FR2016/053148 patent/WO2017103372A1/fr unknown
- 2016-11-30 EP EP16815618.0A patent/EP3389971B1/fr active Active
- 2016-11-30 CN CN201680073722.7A patent/CN108367458B/zh active Active
- 2016-11-30 US US16/061,194 patent/US11161292B2/en active Active
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0106425A2 (en) * | 1982-09-27 | 1984-04-25 | Toyo Seikan Kaisha Limited | Method and apparatus of manufacturing a tubular plastic container |
US4641758A (en) * | 1983-11-22 | 1987-02-10 | Yoshino Kogyosho Co., Ltd. | Blow-molded bottle-shaped container of biaxially oriented thermoplastic synthetic resin with wide port and method of molding the same |
DE3486209T2 (de) * | 1983-11-22 | 1994-01-27 | Yoshino Kogyosho Co Ltd | Blasgeformter, flaschenförmiger Behälter mit breitem Hals, aus biaxialorientiertem, synthetischem, thermoplastischem Kunststoff und Formverfahren desselben. |
US20010055657A1 (en) * | 1997-05-22 | 2001-12-27 | Plastipak Packaging, Inc. | Multi-layer container and preform and process for obtaining same |
CN1248212A (zh) * | 1997-11-28 | 2000-03-22 | 株式会社青木固研究所 | 用作油漆容器和类似物的注射拉伸吹塑成形的广口容器 |
CN1556742A (zh) * | 2001-07-31 | 2004-12-22 | �����ι�˾ | Pet塑坯和容器如食品瓶子的生产方法,得到的容器和中间体塑坯 |
CN103038035A (zh) * | 2010-06-24 | 2013-04-10 | 阿尔温莱纳股份有限两合公司阿尔普拉工厂 | 用于以拉伸吹塑成型工艺来制造塑料容器的预型坯以及用于制造预型坯的方法 |
WO2012092639A2 (de) * | 2011-01-07 | 2012-07-12 | Mould & Matic Solutions Gmbh | Anlage sowie verfahren zur herstellung von hohlkörpern durch spritzgiessen und blasformen |
Non-Patent Citations (1)
Title |
---|
张国辉等: "《建筑装饰材料工学》", 31 January 2012, 中国建材工业出版社 * |
Also Published As
Publication number | Publication date |
---|---|
EP3389971A1 (fr) | 2018-10-24 |
FR3045435A1 (fr) | 2017-06-23 |
WO2017103372A1 (fr) | 2017-06-22 |
US11161292B2 (en) | 2021-11-02 |
US20180361648A1 (en) | 2018-12-20 |
CN108367458B (zh) | 2021-06-08 |
EP3389971B1 (fr) | 2020-07-29 |
FR3045435B1 (fr) | 2018-08-10 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN113414962B (zh) | 以大冲击行程制造容器的方法和模制单元 | |
US9757878B2 (en) | Method for heating a container blank, the temperature of the outer wall of which is low, and unit for heating blanks | |
KR20180083924A (ko) | 프리폼 및 용기의 제조 방법 | |
US7922962B2 (en) | Blowing plant comprising a nozzle provided with a lip sealing joint | |
JP2000043129A (ja) | プラスチック容器の成形方法 | |
CN107207150B (zh) | 压力控制系统 | |
US10391701B2 (en) | Mold bottom with wide air vents for the forming of a container | |
US11975474B2 (en) | Blow molding tool and method for thermally processing a subregion of a surface of a plastic container | |
CN111465481B (zh) | 吹塑成型方法和吹塑成型装置 | |
CN108367458A (zh) | 具有凹形主体部分的预型件 | |
JPWO2020158918A1 (ja) | 樹脂製容器の製造装置、温度調整装置、樹脂製容器の製造方法、及び温度調整方法 | |
CN110625910B (zh) | 配有由来自冲击流体回路的流体回路通风的活动冲击插件的模制单元 | |
US5229142A (en) | Temperature adjusting and compressing in injection stretch blow molding for forming raised portions in the container produced | |
US5124110A (en) | Temperature adjusting and compressing in injection stretch blow molding for forming raised portions in the container produced | |
CN105283298A (zh) | 用于制造容器的装置和方法 | |
CN108430723A (zh) | 具有凹形底部和可变厚度的预型件 | |
US10518465B2 (en) | Mold with raised land for manufacturing containers | |
KR101761808B1 (ko) | 냉매장치가 구비된 벨로우즈 성형 장치 | |
GB2474027A (en) | Apparatus and method for heating preforms | |
US10471643B2 (en) | Mold fitted with an interchangeable counter stretch molding rod | |
US20230191688A1 (en) | Method and apparatus for heating plastic preforms with absorption measurement | |
CN112955300B (zh) | 用于吹塑成型塑料容器的设备 | |
US11865742B2 (en) | Preform and mold stack | |
CN113631347B (zh) | 预制件的温度调节装置和温度调节方法以及树脂成型容器的制造装置和制造方法 | |
EP3778185B1 (en) | Blow molding die and blow molding device |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant |