CN101031400A - 氟树脂涂布构件、由其构件组成的聚酯容器成型模具及该模具的再生方法 - Google Patents
氟树脂涂布构件、由其构件组成的聚酯容器成型模具及该模具的再生方法 Download PDFInfo
- Publication number
- CN101031400A CN101031400A CNA2005800332699A CN200580033269A CN101031400A CN 101031400 A CN101031400 A CN 101031400A CN A2005800332699 A CNA2005800332699 A CN A2005800332699A CN 200580033269 A CN200580033269 A CN 200580033269A CN 101031400 A CN101031400 A CN 101031400A
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- China
- Prior art keywords
- fluororesin
- mould
- mentioned
- polyester container
- layer
- Prior art date
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- Granted
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Abstract
本发明涉及一种氟树脂涂布构件,可提高其氟树脂层的耐磨耗性、耐剥离性。将该涂布构件使用于聚酯容器成型模具时,可防止部分的聚酯树脂、或是聚酯树脂中的低聚物成分、及添加剂的附着堆积,然后形成光泽性、透明性优越的聚酯容器。在底座10的上面设置一层氟树脂层20,将上述底座10表面粗度的均方梯度Δq1设在2至10度,并将上述氟树脂层20的氟树脂被覆量设于0.5至8.5g/m2之间,表面粗度的均方梯度Δq2就会在5度以下,因而形成氟树脂涂布构件1。又,将设于聚酯容器成型模具底座10上硬质表面的非晶质氟树脂层20利用研磨剂30去除后作为镜面,接着,在上述底座10的表面上设置一层新的非晶质氟树脂层20,使聚酯容器成型模具再生。
Description
技术领域
本发明涉及一种为了使用于饮料、食品、化妆品等的树脂容器成型树脂的成型构件,特别是内部可以装入如茶类、水、果汁、酒类、咖啡等的瓶子或杯子、盘状的聚酯树脂等容器成型用的氟树脂涂布构件、由其构件组成的聚酯容器成型模具及该模具的再生方法。
背景技术
如PET(聚对苯二甲酸乙烯酯)树脂等的聚酯容器,可以以瓶子或杯子、盘子之类的容器作为代表,其透明性、耐冲击性、气体阻隔性等都很优良,可以在各种型态下进行生产、使用,其制造形成了产业上的一个重要领域。例如,聚酯容器中的瓶子,是将利用射出成型得到的瓶胚(Preform)在玻璃转移温度(Tg)以上的100℃至180℃的温度范围内进行加热后于成型模具内利用双轴拉伸吹塑成型来加以制造。
又,使用于热灌装的耐热性聚酯瓶,是在双轴拉伸吹塑成型后将成型模具以100℃至180℃的聚酯的结晶化温度进行加热,将上述瓶子在高温区利用热固定(heatfixation)赋予其耐热性。
另外,聚酯容器中的杯子及盘子,是将聚酯膜在呈容器形状的母模(成型模具)中利用真空吸引成型、压力成型、通过母模及芯棒进行拉伸成型、或是和上述瓶子一样使用瓶胚通过芯棒及母模进行双轴拉伸吹塑成型加以制造。
又,使用于热灌装的耐热性杯子、盘子,和制作瓶子时相同,将母模、芯棒加热到结晶温度以上,利用此进行成型的操作来赋予其耐热性。
在这种聚酯容器成型的模具中,除了成型时模具对于聚酯树脂的脱模性外,在赋予制品表面光泽性及透明性的目的下,也必须要求模具内面的平滑性,在现有技术中,是使用以不锈钢或是铝合金作为材料将模具内面形状进行切削加工后,再将其表面用镜面研磨加工后的成品。
又,在耐热性聚酯容器中,在进行成型的模具表面上会附着堆积容器表层上部分的聚酯树脂或聚酯树脂中的低聚物成分、添加剂,这些附着堆积物所形成的凹凸状将转移至成型后的聚酯容器表面,使容器表面的光泽性及透明性降低,因此造成短时间内就必须清理一次模具的困扰。
有关该低聚物的附着,即使树脂中的低聚物浓度仅是微量,其仍会在成型时扩散到容器表面进而转变成高浓度,当其转移到模具表面后,将会生成结晶性的堆积物,这也是众所周知的聚酯容器特有的一种现象。
再者,在上述镜面研磨加工后的成型模具中,脱模性有渐趋恶化的倾向,因此会预先进行成型模具表面的粗化加工,但有使成型容器反而具有粗糙表面的疑虑。
特别是在耐热性聚酯容器的成型过程中,在赋予其耐热性的目的下,为了让模具加热到100℃至180℃幷进行热固定,会提高聚酯树脂对模具表面的粘着性,因此脱模力也会变得更大,在脱模时容易产生容器变形的问题。
上述问题,在现今聚酯容器的高速大量生产中,都会降低生产效率和产品质量,因此如何解决这些问题便成为产业上的重要问题。
另一方面,关于塑料成型模具,已开发出一种将氟树脂涂布在模具表面后作为脱模用膜的模具(专利文献1、专利文献2)。
又,已提出一种技术,是在成型模具表面上附着上一层底膜,且在该底膜上附着上由非晶质氟树脂所构成的脱模用膜,以及上述脱模用膜的去除与再生,利用氟类非活性液体洗净非晶质氟树脂被膜、并加以溶解去除后,将溶解于氟系非活性液体中的非晶质氟树脂,在上述脱模用膜表面进行涂布、干燥、加热(参考专利文献3)。
且,以解决上述聚酯容器成型时所产生的问题为目的,本案申请人已提出一种在模具表面涂布氟树脂作为脱模用膜的聚酯容器用模具(参考专利文献4、5)。
专利文献1:特开平4-353406号公报
专利文献2:特开平4-353407号公报
专利文献3:特开平5-245848号公报
专利文献4:特开2002-18858号公报
专利文献5:特愿2003-393189号
发明所要解决的技术问题
上述专利文献1至4的技术中,在进行氟树脂的涂布时,要得到氟树脂的制膜或者必要的氟树脂膜的强度,必须先进行烧结。这种烧结动作,在为了达到轻量化的目的而使用铝基材作为模具的金属基材时,为使氟树脂得以热熔融,必须以一定的烧结温度进行烧结,例如以320℃的加热条件进行时,会导致模具的金属基材软化,造成模具金属基材上出现裂痕、模具尺寸改变、模具使用时表面产生伤痕以及缩短模具寿命等问题。
因此,本案申请人为了解决这些问题,如上述专利文献5中所记载,提出一种在金属基材上设置一层热传导率比上述金属基材还要低的隔热层,并且在上述隔热层上再设置一层氟树脂层的氟树脂涂布构件、由其涂布构件组成的聚酯容器用模具及其制造方法。
然而,在本案申请人提出上述专利文献5后,经过不断检讨下的结果,发现即使通过形成氟树脂层来防止源自于聚酯容器等容器的部分聚酯树脂、聚酯树脂中的低聚物成分以及添加剂的附着堆积,但在氟树脂层的耐磨耗性、耐剥离性以及在制造聚酯容器时容器的光泽性、透明性等性质上仍然存在着有待解决的问题。
例如,使用形成氟树脂层的模具来生产聚酯质瓶子时,瓶子的生产数目一旦达到每个模型生产几十~几百万支的状况下,模具表面的氟树脂便会因磨耗而导致树脂膜变薄或是局部性的消失。这样一来,在模具表面上就容易附着上源自于成型容器的树脂,而附着后的树脂又不容易清除干净,结果不仅导致清洁模具的间隔缩短,也会发生所生产瓶子的透明度(浊度,haze)变差的问题。这个时候,于生产现场一旦因为瓶子透明度的恶化而判断其已达到使用极限时,模具便会被分类为“使用后”,必须进行再生处理。
又,关于专利文献3中脱模用膜的再生方法,由于利用氟系非活性液体来洗净并溶解去除非晶质氟树脂被膜,上述非晶质氟树脂被膜不可能被完全去除而达到底座的镜面化,否则就需要花费相当长的时间来处理。
本案申请人针对上述待解决的课题,通过更加严格设置基材的表面粗度、基材上氟树脂层的表面粗度及其被覆量来确保氟树脂层的耐磨耗性、耐剥离性以及制造聚酯容器时容器的光泽性、透明性,也确实获得了良好的效果。
又,本案申请人另发现,将聚酯容器成型模具的底座、氟树脂层、研磨条件进行确定时,在聚酯容器成型模具的再生方法中,能获得更好的效果。
因此,本发明的目的是提供一种进行聚酯容器等的制造时可以容易地确保氟树脂层的耐磨耗性、耐剥离性以及聚酯容器的光泽性、透明性的氟树脂涂布构件,由其涂布构件组成的聚酯容器成型模具及该模具的再生方法。
发明内容
根据本发明,可提供一种氟树脂涂布构件,在底座上设置一层氟树脂层,将上述底座表面粗度的均方梯度Δq1设在2至10度,幷将上述氟树脂层的被覆量控制在0.5至8.5g/m2之间,表面粗度的均方梯度Δq2就会在5度以下。
这里的均方梯度Δq(单位:度)是以:
Δq=tan-1RΔq来表示,RΔq为表面粗度的参数,用来表示剖面曲线的均方根(Root Mean Square)梯度(单位:正切值、JIS B 0601:2001)。
在本发明的氟树脂涂布构件中,
1.上述底座表面的硬度Hv为250至2000;
2.上述底座是由基材及硬质层所构成,在上述硬质层上设置氟树脂层;
3.上述氟树脂是由非晶质氟树脂所构成;
4.作为以上述记载的氟树脂涂布构件所形成的聚酯容器成型模具;
上述1~4任何一项都理想。
又,根据本发明,可提供一种聚酯容器成型模具的再生方法,将设在聚酯容器成型模具底座上的硬质表面上的非晶质氟树脂利用研磨剂去除后同时做镜面加工,接着,在上述底座表面设置新的非晶质氟树脂层。
在本发明的聚酯容器成型模具的再生方法中,
1.将上述底座表面粗度的均方梯度Δq1设在2至10度,幷将新的非晶质氟树脂层的被覆量控制在0.5至8.5g/m2之间,表面粗度的均方梯度Δq2就会在5度以下;
2.上述底座表面的硬度Hv为250至2000;
3.上述底座是由金属基材与硬质层所构成;
4.利用在弹性内芯表面上被覆有研磨粒子的研磨剂将非晶质氟树脂层去除;
上述1~4任何一项都理想。
发明效果
根据本发明,可提高氟树脂层的耐磨耗性、耐剥离性,将该涂布构件使用于聚酯容器成型模具时,除了可以使光泽性、透明性都优良的聚酯容器成型之外,还能防止部分的聚酯树脂或是聚酯树脂中的低聚物成分以及添加剂的附着堆积。
又,能使聚酯容器成型模具的再生变得极为容易,且即使经过再生后还能提高氟树脂层的耐磨耗性、耐剥离性,除了可以使光泽性、透明性都优良的聚酯容器成型之外,还能防止部分的聚酯树脂或是聚酯树脂中的低聚物成分以及添加剂的附着堆积。
附图简述
图1是表示本发明氟树脂涂布构件剖面构造的剖面图。
图2为表示本发明另一型态的氟树脂涂布构件剖面构造的剖面图。
图3是表示本发明的聚酯容器成型模具的再生方法的参考图。
图4是表示研磨剂范例的剖面图。
附图符号说明:1氟树脂涂布构件;10底座;11基材;12硬质层;20氟树脂层;30研磨剂;31弹性内芯;32研磨粒子。
具体实施方式
以下,将参照附图对本发明的最佳实施方式进行说明。
图1是表示本发明的氟树脂涂布构件剖面构造的剖面图。
如图1所示,本发明的氟树脂涂布构件1,设有底座10、及被覆在底座10表面的氟树脂层20。
设有氟树脂层20的底座10的表面,可通过喷丸清理(shot blast)、喷砂处理(sandblast)等研磨方式进行粗面加工,使表面粗度的均方梯度Δq1为2至10度,更理想为4至7度。上述表面粗度的均方梯度Δq1若未满2度,氟树脂层20的维护性就会降低;另一方面,若超过10度,就不容易得到设于底座10表面的氟树脂层20的表面平滑性。
设有氟树脂层的底座10,基于轻量及容易进行切削加工等的理由以使用铝合金较为理想,也还可以使用镁合金、钛合金等。
又,本发明中,底座10的硬度以使用维氏硬度(Hv)在250至2000的材料较为理想,又以500至2000者为更理想。由于具有该硬度,当氟树脂涂布时底座10的基材11(参考图2)软化、尺寸变化、表面伤痕,做成聚酯容器成型模具时,可以防止容器成型时模具的破损、损伤、扭曲;再者,可容易进行从模具再生时使用研磨剂去除氟树脂层以及对设置新氟树脂层的底座的镜面化,由这点而言也非常理想。
再者,上述硬度若超过维氏硬度(Hv)2000时,利用切削加工等方法做成所需形状的聚酯容器成型模具时,这种制造方式会变得比较困难,因此不甚理想。
这种底座10的材料可列举出硬质铝、不锈钢、油淬钢等。
在测量维氏硬度(Hv)时的负荷,若测量对象为金属基材时,通常为300g。测量对像为具有较薄皮膜者的情况下,若在太大的负荷下去测量,将会贯穿被膜,变成在下层的基材表面进行测量,因此必须使用25g左右的负荷。
另一方面,设于底座10表面的氟树脂层20的被覆量为0.5至8.5g/m2,特别是以1.5至3g/m2较为理想,上述被覆量若未满0.5g/m2,将有损被覆在底座10的均一性,使被覆缺陷变大;另外,若超过8.5g/m2,因成型中蠕变(creep)变形所产生的粗糙感会提高,导致成型后聚酯容器的光泽性、透明性降低,处理成本增加而不经济。
又,上述氟树脂层20具有不会使聚酯树脂、低聚物及添加剂附着的性质,可确保成型后聚酯容器的光泽性及透明性,达到所要求的表面平滑性,表面在喷涂后进行加热熔融或者视需要利用研磨轮等方法平滑加工处理使其表面粗度的均方梯度Δq2在5度以下,较理想者是0.5至3度。上述均方梯度Δq2若未满0.5度,实质上会难以进行平滑加工处理,且研磨等需要时间,另外,若超过5度,氟树脂层20表面的镜面状态会劣化,聚酯容器有产生雾化的疑虑。
像这样,通过将氟树脂层20的表面处理得很平滑,使氟树脂涂布构件1,特别是作成聚酯容器成型模具时,可防止聚酯树脂、低聚物或添加剂的附着,制造出光泽性及透明性皆优良的聚酯容器。
再者,若将Δq1与Δq2之间的关系设为Δq1>Δq2时,对被膜本身凝集破坏的强度保持与被膜和底座之间的耐剥离性来说会更理想。
使用在上述氟树脂层20的氟树脂,其本身可使用已知的任何氟系树脂,例如,可使用聚四氟乙烯、四氟乙烯/六氟丙烯共聚物、四氟乙烯/全氟丙基乙烯基醚共聚物(PFA)、及以上的环氧树脂改性物、丙烯酸树脂改性物、嵌段丙烯酸树脂改性物、四氟乙烯/全氟(2,2-二甲基1,3-二氧杂环戊烯(dioxol))共聚物等。
其中,特别是四氟乙烯/全氟(2,2-二甲基1,3-二氧杂环戊烯)共聚物等的非晶质氟树脂,容易达到上述氟树脂层的被覆量以及利用加热熔融使表面粗度的均方梯度Δq2容易被控制,因此较为理想;又,非晶质氟树脂可溶于氟系溶剂中,因此可以溶剂的状态涂布于薄膜。
图2为表示本发明另一型态的氟树脂涂布构件剖面构造的剖面图。
如图2所示的本发明的氟树脂涂布构件1,其底座10由基材11及硬质层12所构成,将由铝合金等所形成的基材11利用切削加工等方法作成所须形状后,依照顺序设置硬质层12、在硬质层12表面的氟树脂层20。
此时,将基材11的表面利用喷丸清理、喷砂处理等研磨方式进行粗面加工来处理设置硬质层12。接着,将设有氟树脂层20的硬质层12的表面利用研磨轮等进行精密加工处理后,再利用喷丸清理、喷砂处理等研磨方式粗面加工处理使表面粗度的均方梯度Δq1为2至10度,更理想者是4到7度。
同样的,氟树脂层20的表面在喷涂后进行加热熔融或者利用研磨轮等方式平滑加工处理使表面粗度的均方梯度Δq2为5度以下,更理想者是0.5到3度。
又,该硬质层12的维氏硬度(Hv)介于250至2000,更理想者为500至2000,可以防止氟树脂涂布时底座10的基材11的软化、尺寸变化、表面伤痕,做成聚酯容器成型模具时,可以防止容器成型时模具的破损、损伤、扭曲;再者,可容易进行从模具再生时使用研磨剂去除氟树脂层以及对设置新氟树脂层的底座的镜面化,由这点而言也非常理想。
硬质层12是由较上述基材11更硬的合金、金属氧化物、陶瓷等所构成。作为这种硬质层12的合金,可列举出铁镍合金、镍铬合金、镍磷合金、镍硼合金等镍合金,以及铁铬合金、铁镍铬合金等铁合金。
作为金属氧化物,可列举出铝氧化物、铬氧化物、铁氧化物、镍氧化物等。
又,作为陶瓷,可列举出氮化钛、氮化铬等金属氮化物、碳化铬等碳化物,及上述陶瓷中一种或多种的组合,或是与其它不同的陶瓷组合而成。
其中,用铝合金作为基材11时,从其对基材11具有良好紧密附着性的优点来说,硬质层12最好是以镍磷合金利用电镀法所形成者较为理想。
再者,上述硬质层12的厚度以2至100μm较为理想,上述厚度若未满2μm,设置新氟树脂层的硬质层12在进行镜面研磨时,底座10的基材11会有露出的疑虑。另外,若超过100μm,则会因为太厚而有硬质层12破裂的疑虑,且不够经济。
又,图中虽无标示,但在底座10与氟树脂层20之间也可设置紧密附着性薄膜,该紧密附着性薄膜可提高底座10与氟树脂层20之间的黏着效果;紧密附着性薄膜可列举出金属氧化物、金属氢氧化物、硅烷偶联剂等。
本发明的氟树脂涂布构件作为聚酯容器成型模具时,特别是可用于聚酯容器的双轴拉伸吹塑成型。
图3表示本发明聚酯容器成型模具的再生方法。首先,如再生工程所记载,将设置在使用后的上述模具硬质表面的非晶质氟树脂层用研磨剂去除的同时,将硬质表面进行镜面研磨。其理由是,在上述模具的再生过程中,必须将存在于氟树脂层及底座粗面部分的氟树脂确实去除干净,因此,才会在已经粗面化的底座表面使用研磨剂进行镜面处理。
此时,通过氟树脂层为非晶质而底座的表面为硬质的条件,即可容易地完全去除氟树脂层,且在进行上述镜面化时,可以使用研磨剂使底座表面镜面化。
且,在完全去除上述氟树脂层及达到底座表面镜面化的过程中,研磨剂如图4所示,使用粒径为0.3至0.6mm的弹性内芯31表面上被覆有研磨粒子32的研磨剂30,例如东洋研磨材(股)制的〔SP-30G〕或〔SP-FLLO〕,能在短时间内得到镜面化的优点,使用上较为理想。构成研磨剂30的弹性内芯31的材质,可列举出橡胶或塑料等具有弹性的材料,设于弹性内芯31表面的研磨粒子32的材质,可列举出碳化硅或氧化铝等的硬质微粒。
又,为了使上述研磨剂能够发挥充分的效果,最好将底座硬质表面的硬度调整为维氏硬度(Hv)介于250至2000之间,又以500至2000较为理想。
如图1所示的氟树脂涂布构件的示例中,底座10以硬质铝、不锈钢、油淬钢等构成较为理想,而如图2所示的氟树脂涂布构件的示例中,底座10由以由铝合金等所形成的基材11、及镍磷合金等所形成的硬质层12构成较为理想。
且,再生后的模具,和上述氟树脂涂布构件10或聚酯容器成型模具相同,在去除非晶质氟树脂层后,底座表面粗度的均方梯度Δq1为2至10度,尤其以4到7度较为理想;又,新的非晶质氟树脂层的氟树脂被覆量为0.5至8.5g/m2,特别是以1.5至3g/m2较为理想,表面粗度的均方梯度Δq2为5度以下,又以0.5到3度为理想,并将上述均方梯度Δq1及均方梯度Δq2之间的关系设为均方梯度Δq1>均方梯度Δq2。
以下的实施例中,将对使用作为聚酯瓶的双轴拉伸吹塑成型模具时的情况进行说明。
实施例
〔测量〕
1.表面粗度的均方梯度Δq
通过表面粗度测量装置〔东京精密(股)制:SURFCOM570A型〕,以切断值(Cut-off):0.8mm、扫描速度:0.3mm/s、测量长度:4mm加以测量,求得均方梯度Δq1及Δq2。
2.氟树脂被覆量
使用荧光X线装置〔理学电气工业(股)制:ZSX100e型〕,利用荧光X线来测量氟树脂层的强度,通过事先求得的标准试片来作成标准曲线,利用强度求得被覆量。
3.硬度
利用硬度测试机〔(股)AKASHI制、MVK-G3型〕,以底座10负荷300g、硬质层12负荷25g来测量。
〔评价〕
1.氟树脂层的强度(紧密附着性)
将直径30mm、厚度6mm的碟状样本装在旋转架上,以线速度3.7m/分使其旋转,然后以前端的球面半径为2.25mm的玻璃棒作为组合材,用销盘检测法(Pinon disk method)将玻璃棒前端以0.01MP的押压力按压样本表面,摩擦10分钟后,对剥离状态进行评价。
○:无剥离现象
×:有剥离现象
2.聚酯瓶的外观光泽性、透明性
(1)从模具最表面的粗度来观察瓶子的外观光泽性、透明性
在双轴拉伸吹塑成型开始进行5分钟后,取下20支瓶子,移往SUGA测试机(股)浊度计(haze meter)HGM-2K,测量其瓶身的混浊值(浊度),进行以下两阶段的评价。
○:混浊值(平均值)未满10%(光泽性良好)
×:混浊值(平均值)超过10%以上(光泽性不佳)
(2)由聚酯树脂成分对模具的附着来观察瓶子的外观光泽性、透明性
在双轴拉伸吹塑成型开始进行10天后,各取下20支瓶子,同上述2-(1)测量其瓶身的混浊值(浊度),进行以下两阶段的评价。
○:混浊值(平均值)未满10%(光泽性良好)
×:混浊值(平均值)未满10%(光泽性不佳)
(实施例1)
1.双轴拉伸吹塑成型模具的制作
(1)模具的制作
将作为模具底座的铝7075-T651材(硬度Hv300g:190)进行切削加工后制作成模具(分割母模2个),可双轴拉伸吹塑成型制作出瓶径:65mm、去除口部的高度:185mm、内容量:500ml横剖面状为圆筒状的聚酯瓶。
之后,再将模具表面以研磨轮研磨,进行精密加工处理,接着,将粒径分布为数μm至数十μm的碳化硅原料粉末在0.1Mpa的压力下在几秒之内利用吹附喷丸处理来进行粗面加工处理至表面粗度的均方梯度Δq1达到10度。
(2)氟树脂层的形成
将上述模具利用酒精清洗干净,将杜邦(DuPont)公司制的非晶质氟树脂〔AF2400〕(玻璃转化温度240℃)溶解于3M公司制的氟性冷却液〔Fluorinert:FC77〕中,使其浓度为0.6重量/容量%,将该溶液喷涂在模具表面,放入320℃的电气炉中烧结30分钟进行氟树脂的加热熔融,形成被覆量为8.5g/m2、表面粗度的均方梯度Δq2为5度的氟树脂层。烧结后的底座材料硬度为Hv300g:90。
2.聚酯瓶的制作
使用日本UNIPET公司〔RT543CTHP〕的聚酯树脂,将射出成型后的聚酯树脂制成有底瓶胚〔直径25mm、含口部长度100mm〕,以180℃使口部结晶后再于110℃加热,在上述氟树脂涂布模具内,利用模具温度:150℃、预先吹压:1~1.7Mpa、吹压:3.5Mpa、延伸倍率:圆周方向平均3.5倍的条件下,进行双轴拉伸吹塑成型,制作出聚酯瓶。
接着对该聚酯瓶在制作后的氟树脂涂布模具中,进行氟树脂层的强度(紧密附着性)、附着在双轴拉伸吹塑成型后的模具上的树脂成分的评价(瓶子的外观光泽性、透明性)。
(实施例2)
利用13铬类(13Cr)含锰不锈钢的淬火回火材料(日立金属(股)HPM38、硬度Hv300g:550)来作为模具的底座,进行粗面加工处理至表面粗度的均方梯度Δq1为6度,然后在模具底座氟树脂层的形成中,将含氟树脂的溶液溶解使其浓度成为0.6重量/容量%后喷涂在模具表面上,在340℃的电气炉中烧结30分钟进行氟树脂的加热熔融,除了形成被覆量为5g/m2、表面粗度的均方梯度Δq2为3度的氟树脂层外,制作成和实施例1相同的氟树脂涂布模具及聚酯容器,接着同样进行评价。又,烧结后的底座材料的硬度并无变化。
(实施例3)
在实施例1中,将模具底座的铝7075-T651材表面进行研磨处理,于其表面设置一层由无电解镍磷合金电镀层所形成的平均厚度为20μm的硬质层(硬度Hv25g:600)作为模具的底座,将上述硬质层用研磨轮进行精密加工处理,接着,除了利用喷丸处理进行粗面加工处理至表面粗度的平均平均梯度Δq1达到2度以外,制作成和实施例1相同的模具。
又,在模具表面氟树脂层的形成中,将含氟树脂的溶液溶解使其浓度成为0.6重量/容量%后喷涂在模具表面上,在360℃的电气炉中烧结一个半小时,进行氟树脂的加热熔融,除了形成被覆量为0.5g/m2、表面粗度的均方梯度Δq2为0.5度的氟树脂层外,和实施例1同样,作成氟树脂涂布模具及聚酯容器,接着进行同样的评价。又,烧结后的硬质层的硬度为Hv25g:1200。
(比较例1)
除了将氟树脂涂布模具底座表面粗度的平均平均梯度Δq1调整为15度以外,和实施例1一样,作成氟树脂涂布模具及聚酯容器,进行同样的评价。
(比较例2)
除了将氟树脂涂布模具的氟树脂层被覆量调整为12g/m2以外,和实施例2一样,作成氟树脂涂布模具及聚酯容器,进行同样的评价。
(比较例3)
除了将氟树脂涂布模具的氟树脂层被覆量调整为0.2g/m2以外,和实施例3一样,作成氟树脂涂布模具及聚酯容器,进行同样的评价。
双轴拉伸吹塑成型模具 | 评价 | ||||||
氟树脂层的强度 | 瓶子的外观光泽性、透明性 | ||||||
底座 | 底座的表面粗度(Δq1) | 氟树脂层的被覆量(g/m2) | 氟树脂层的表面粗度(Δq2) | 从模具最表面的粗度,来观察瓶子的外观光泽性、透明性 | 由附着在模具上的聚酯树脂成分,来观察瓶子的外观光泽性、透明性 | ||
实施例1 | 铝7075-T651 | 10度 | 8.5 | 5度 | ○ | ○ | ○ |
实施例2 | 不锈钢HPM38 | 6度 | 5 | 3度 | ○ | ○ | ○ |
实施例3 | 铝/硬质层 | 2度 | 0.5 | 0.5度 | ○ | ○ | ○ |
比较例1 | 铝7075-T651 | 15度 | 8.5 | 5度 | ○ | × | ○ |
比较例2 | 不锈钢HPM38 | 6度 | 12 | 3度 | × | ○ | ○ |
比较例3 | 铝/硬质层 | 2度 | 0.2 | 0.5度 | ○ | ○ | × |
再者,为了确认上述实施例1至3的氟树脂涂布模具使用后的再生可能性,将模具表面使用粒径为0.3至0.6mm的弹性内芯31表面上含有研磨粒子的研磨剂〔东洋研磨材(股)制:〔SP-30G〕或〔SP-FLLO〕〕进行研磨后,由于在实施例1的模具中底座材料的表面太过柔软,导致弹性内芯无法顺利滑行,长时间使用下会产生突起,无法得到镜面效果,因此无法再生。
另一方面,实施例2及3的氟树脂涂布模具,除了可以使用上述研磨剂完全去除设于底座表面的非晶质氟树脂层,同时也可以使底座表面达到镜面化。
之后,将上述底座表面再度利用喷丸处理进行粗面加工,使其再生后表面粗度的均方梯度Δq1达到6度(相当于实施例2)或者2度(相当于实施例3)。
接着,于该粗面加工处理后的底座表面上,设置一层被覆量为5g/m2(相当于实施例2)或0.5g/m2(相当于实施例3)的新的非晶质氟树脂层,并使其表面粗度的均方梯度Δq2达到3度(相当于实施例2)或者0.5度(相当于实施例3)的该非晶质氟树脂层的表面,各自在与上述条件相同的条件下进行溶解、喷涂、烧结、及加热熔融。
使用该再生后的氟树脂涂布模具进行双轴拉伸吹塑成型制作成聚酯瓶后,可得到与上述实施例2及3相同的评价结果。
产业上利用的可能性
根据本发明的氟树脂涂布构件,可提高氟树脂层的耐磨耗性、耐剥离性,特别是将本发明使用制造出由聚酯树脂形成的瓶子、杯子、盘状聚酯容器的聚酯容器成型模具时,可以防止局部聚酯树脂的一部份,或是聚酯树脂中的低聚物成分、添加剂的附着堆积,有助于光泽性、透明性优良的聚酯容器的成型。
又,根据本发明的聚酯容器成型模具的再生方法,可使上述模具的再生变得更为容易,即使于再生之后也能防止局部聚酯树脂的一部分或是聚酯树脂中的低聚物成分、添加剂的附着堆积,有助于光泽性、透明性优良的聚酯容器的成型。
Claims (10)
1.一种氟树脂涂布构件,其特征在于,在底座上设置氟树脂层,使上述底座表面粗度的均方梯度Δq1为2至10度,而上述氟树脂层的氟树脂被覆量为0.5至8.5g/m2,其表面粗度的均方梯度Δq2为5度以下。
2.如权利要求1所述的氟树脂涂布构件,其特征在于,上述底座表面的硬度在Hv250至2000之间。
3.如权利要求1或2所述的氟树脂涂布构件,其特征在于,上述底座是由基材及硬质层所构成,而所述硬质层上又设有氟树脂层。
4.如权利要求1至3中任一所述的氟树脂涂布构件,其特征在于,上述氟树脂为非晶质氟树脂所构成。
5.一种聚酯容器成型模具,其是由上述权利要求1至4中任一项所述的氟树脂涂布构件所构成。
6.一种聚酯容器成型模具的再生方法,其特征在于,将设置在聚酯容器成型模具底座上的硬质表面上的非晶质氟树脂层利用研磨剂去除的同时使其镜面化,接着,于上述底座表面上再设置新的非晶质氟树脂层。
7.如权利要求6所述的聚酯容器成型模具的再生方法,其特征在于,利用在弹性内芯表面上被覆有研磨粒子的研磨剂将非晶质氟树脂层去除
8.如权利要求6或7所述的聚酯容器成型模具的再生方法,其特征在于,上述底座表面的硬度Hv为250至2000。
9.如权利要求6至8中任一项所述的聚酯容器成型模具的再生方法,其特征在于,上述底座是由金属基材及硬质层所构成。
10.如权利要求6至9中任一所述的聚酯容器成型模具的再生方法,其特征在于,上述底座表面粗度的均方梯度Δq1为2至10度,新的非晶氟树脂层的被覆量为0.5至8.5g/m2,其表面粗度的均方梯度Δq2为5度以下。
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PCT/JP2005/018042 WO2006035914A1 (ja) | 2004-09-30 | 2005-09-29 | フッ素樹脂コート部材、その部材から成るポリエステル容器成形金型及び該金型の再生方法 |
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EP (1) | EP1798015B1 (zh) |
JP (1) | JP5075411B2 (zh) |
KR (1) | KR20070106968A (zh) |
CN (1) | CN101031400B (zh) |
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Cited By (4)
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CN103092010A (zh) * | 2011-09-22 | 2013-05-08 | 株式会社东芝 | 再生模板的方法和再生设备 |
CN105050785A (zh) * | 2013-03-26 | 2015-11-11 | 帝斯克玛股份有限公司 | 具有疏水性质的模具 |
CN106827366A (zh) * | 2016-12-13 | 2017-06-13 | 柳州通为机械有限公司 | 汽车座椅软密封发泡模具 |
CN112739922A (zh) * | 2018-09-26 | 2021-04-30 | Ntn株式会社 | 滚动轴承以及风力发电用主轴支承装置 |
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JP4702201B2 (ja) * | 2006-06-28 | 2011-06-15 | 東洋製罐株式会社 | 樹脂加工用部材 |
US20110159138A1 (en) | 2007-01-08 | 2011-06-30 | Garrtech Inc. | Blow mold for molding a container |
US20090140469A1 (en) | 2007-01-08 | 2009-06-04 | Garrtech Inc. | One-piece blow mold halves for molding a container |
CN103158294A (zh) * | 2011-12-15 | 2013-06-19 | 深圳富泰宏精密工业有限公司 | 壳体及其制备方法 |
CN103173831B (zh) * | 2013-03-19 | 2016-01-20 | 江苏新美星包装机械股份有限公司 | 吹瓶机用铝合金模具的表面硬化工艺 |
WO2015157754A1 (en) * | 2014-04-11 | 2015-10-15 | Dak Americas Llc | Ebm epet container drop-impact enhancement |
WO2016019268A1 (en) * | 2014-08-01 | 2016-02-04 | 3M Innovative Properties Company | Substrate with amorphous, covalently-bonded layer and method of making the same |
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CN1034162A (zh) * | 1988-12-12 | 1989-07-26 | 高步 | 一种氟塑料模具的成型工艺 |
JP2715719B2 (ja) * | 1991-07-19 | 1998-02-18 | ブリヂストンスポーツ株式会社 | ゴルフボール成型用金型及び該金型を用いたゴルフボールの製造方法 |
JP3471954B2 (ja) * | 1994-03-10 | 2003-12-02 | キヤノン株式会社 | プラスチック成形品及びその成形方法 |
US6033724A (en) * | 1996-11-27 | 2000-03-07 | Spalding Sports Worldwide, Inc. | Golf ball mold preparation technique and coating system |
JP2002018858A (ja) * | 2000-07-06 | 2002-01-22 | Toyo Seikan Kaisha Ltd | ポリエステル容器用金型 |
JP2002292657A (ja) * | 2001-03-28 | 2002-10-09 | Fuji Xerox Co Ltd | ポリイミド被膜組成物の製造方法、ポリイミド被膜組成物、無端ベルト、定着ベルト、opc感光体 |
JP2004082461A (ja) * | 2002-08-26 | 2004-03-18 | Ngk Insulators Ltd | 硫黄モールド成形用金型 |
-
2005
- 2005-09-29 CN CN2005800332699A patent/CN101031400B/zh not_active Expired - Fee Related
- 2005-09-29 US US11/664,118 patent/US8043677B2/en not_active Expired - Fee Related
- 2005-09-29 AU AU2005288131A patent/AU2005288131B2/en not_active Expired - Fee Related
- 2005-09-29 JP JP2006537827A patent/JP5075411B2/ja active Active
- 2005-09-29 CA CA 2582481 patent/CA2582481A1/en not_active Abandoned
- 2005-09-29 KR KR1020077007853A patent/KR20070106968A/ko active Search and Examination
- 2005-09-29 WO PCT/JP2005/018042 patent/WO2006035914A1/ja active Application Filing
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
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CN103092010A (zh) * | 2011-09-22 | 2013-05-08 | 株式会社东芝 | 再生模板的方法和再生设备 |
CN103092010B (zh) * | 2011-09-22 | 2015-11-25 | 株式会社东芝 | 再生模板的方法和再生设备 |
CN105050785A (zh) * | 2013-03-26 | 2015-11-11 | 帝斯克玛股份有限公司 | 具有疏水性质的模具 |
CN105050785B (zh) * | 2013-03-26 | 2018-05-29 | 帝斯克玛股份有限公司 | 具有疏水性质的模具 |
CN106827366A (zh) * | 2016-12-13 | 2017-06-13 | 柳州通为机械有限公司 | 汽车座椅软密封发泡模具 |
CN112739922A (zh) * | 2018-09-26 | 2021-04-30 | Ntn株式会社 | 滚动轴承以及风力发电用主轴支承装置 |
CN112739922B (zh) * | 2018-09-26 | 2023-02-28 | Ntn株式会社 | 滚动轴承以及风力发电用主轴支承装置 |
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AU2005288131A1 (en) | 2006-04-06 |
AU2005288131B2 (en) | 2010-06-03 |
CN101031400B (zh) | 2010-10-06 |
EP1798015B1 (en) | 2014-04-09 |
EP1798015A1 (en) | 2007-06-20 |
EP1798015A4 (en) | 2011-11-02 |
US20080182102A1 (en) | 2008-07-31 |
JPWO2006035914A1 (ja) | 2008-05-15 |
US8043677B2 (en) | 2011-10-25 |
JP5075411B2 (ja) | 2012-11-21 |
CA2582481A1 (en) | 2006-04-06 |
WO2006035914A1 (ja) | 2006-04-06 |
KR20070106968A (ko) | 2007-11-06 |
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