CN1984776A - 脱模片材及使用该脱模片材得到的成型品 - Google Patents
脱模片材及使用该脱模片材得到的成型品 Download PDFInfo
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- CN1984776A CN1984776A CNA2005800236032A CN200580023603A CN1984776A CN 1984776 A CN1984776 A CN 1984776A CN A2005800236032 A CNA2005800236032 A CN A2005800236032A CN 200580023603 A CN200580023603 A CN 200580023603A CN 1984776 A CN1984776 A CN 1984776A
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Classifications
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- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
- B32B3/30—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer formed with recesses or projections, e.g. hollows, grooves, protuberances, ribs
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- B32B27/16—Layered products comprising a layer of synthetic resin specially treated, e.g. irradiated
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/40—Adhesives in the form of films or foils characterised by release liners
- C09J7/403—Adhesives in the form of films or foils characterised by release liners characterised by the structure of the release feature
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- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/001—Release paper
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2301/00—Additional features of adhesives in the form of films or foils
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- D21H19/00—Coated paper; Coating material
- D21H19/36—Coatings with pigments
- D21H19/38—Coatings with pigments characterised by the pigments
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/36—Coatings with pigments
- D21H19/38—Coatings with pigments characterised by the pigments
- D21H19/40—Coatings with pigments characterised by the pigments siliceous, e.g. clays
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/50—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by form
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
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Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
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Abstract
本发明涉及一种脱模片材,其特征在于,在基材片的至少一个表面上设置有表面形成有垫子状的微细凹凸的垫化层,在该垫化层表面设置了由含有平均粒径为0.01~0.3μm的超微粒子的脱模性树脂的涂膜层形成的脱模层。本发明的脱模片材长期具有优良的耐热性和机械强度,即使反复使用,在其表面也没有抑制光泽的垫子状或光泽的变化,进一步地,使用该脱模片材,能够提供品质均匀的合成皮革或装饰板等成型品。
Description
技术领域
本发明涉及脱模片材,详细地说,涉及可制造具有抑制光泽的垫(mat)状的成型品的脱模片材及使用该脱模片材得到的成型品。
背景技术
脱模片材可用作在聚氨酯树脂制合成皮革,半合皮、聚氯乙烯树脂制合成皮革等各种合成皮革制品或装饰板等制造中使用的脱模片材(也称为工程片材),或粘合制品的粘合剂层的保护片材。
迄今,作为脱模片材,已知有在基材片的表面层压聚丙烯树脂、聚甲基戊烯树脂等聚烯烃树脂而设置脱模层的脱模片材,以及涂布醇酸树脂而设置脱模层,并通过表面设置有微细凹凸的轧花辊对该脱模层实施轧花加工的脱模片材。
在这些脱模片材的脱模层的表面,挤出聚氨酯树脂组合物或聚氯乙烯树脂组合物等并进行加工,使脱模层表面的印纹图案转移后,通过剥离脱模片材,可以制造各种合成皮革制品或装饰板等。
此外,作为用于使合成皮革表面均匀地形成垫子状的脱模片材,提出了通过在基材纸的一个表面设置脱模性平滑化层,并在其上涂布使无机和/或有机的微粒在脱模性树脂中均匀分散的树脂组合物的涂布液,从而形成了表面具有算术平均表面粗糙度为0.5~15μm的微细凹凸的脱模层的脱模片材(特开2002-361815号公报)。
然而,以往的上述脱模片材,使使用脱模片材得到的成型品的表面成为显现高光泽的镜面状的程度已经足够,但使其成为抑制光泽的垫子状的程度还不足够。
在成型品的表面显现抑制光泽的垫子状的情况下,需要大面积均匀地形成微细且较深的凹凸,制成这样的轧花辊在技术上也很困难。此外,提出了如上所述的,代替轧花方式而采用涂布方法,在脱模片材的脱模层上形成抑制光泽的垫子状的微细凹凸的方案。但是,这些方法,即便可良好地抑制光泽,但反复使用的耐久性差,且在涂膜面的均匀性上存在难点,合格率差,工业生产上存在问题,不能满足需要。
发明内容
本发明的目的是提供长期具有优良的耐热性和机械强度,即使在反复使用的情况下,其表面的抑制光泽的垫子状或光泽无变化的脱模片材,进一步提供使用该脱模片材得到的、品质均匀的合成皮革或装饰板等成型品。
本发明人为解决上述课题进行了反复研究的结果,发现在基材片和脱模层之间设置表面形成有垫子状的微细凹凸的垫化(mat)层,由含有无机或有机的超微粒子的脱模性树脂的涂膜层形成脱模层,通过垫化层和脱模层的协同效果,可以解决上述问题,至此完成了本发明。
即,本发明提供一种脱模片材,其特征在于,在基材片的至少一个表面上设置有表面形成有垫子状的微细凹凸的垫化层,在该垫化层表面设置有由含有平均粒径为0.01~0.3μm的超微粒子的脱模性树脂的涂膜层形成的脱模层。
另外,本发明提供的脱膜片材,其特征在于,在上述脱膜片材中,垫化层是由含有平均粒径为0.5~30μm的超微粒子的涂膜层形成的。
另外,本发明提供的脱膜片材,其特征在于,在脱模层中含有的超微粒子为二氧化硅超微粒子。
另外,本发明提供的脱膜片材,其特征在于,上述脱模片材中的脱模层的表面光泽度为1.5~2.5%。
另外,本发明提供表面为垫子状的树脂成型品,其特征在于,在上述任一种脱模片材的脱模层表面形成树脂组合物层,然后使之固化,再从脱膜片材上将之剥离而得到。
本发明的脱模片材长期具有优良的耐热性和机械强度,即使在反复使用的情况下,也可以防止其表面的抑制光泽的垫子状或光泽产生变化。并且,使用本发明的脱模片材,能够得到抑制光泽的垫子状的品质均匀的合成皮革或装饰板等成型品。
具体实施方式
本发明的脱模片材中的基材片可举出优质纸、粘土涂布纸、流延涂布纸等纸材片,聚乙烯树脂、聚丙烯树脂等聚烯烃树脂,聚对苯二甲酸丁二醇酯树脂、聚对苯二甲酸乙二醇酯树脂、聚萘二甲酸乙二醇酯树脂等聚酯树脂聚醚酰亚胺树脂、乙酸系树脂、聚苯乙烯树脂、聚氯乙烯树脂等合成树脂的片材等。基材片既可以是单层,也可以是同种或不同种的2层以上的多层。
基材片的厚度没有特殊限制,通常为10~300μm即可,优选为20~200μm。
基材片使用纸材片时,在设置垫化层前,优选在纸材片的表面设置填塞层。填塞层只要是具有填塞功能的成分就没有特殊限定,优选含有粘合剂和无机填充剂的组合物。作为粘合剂,例如可举出天然橡胶、丁二烯橡胶、苯乙烯-丁二烯橡胶、氯丁橡胶、异戊橡胶、丁腈橡胶、乙丙橡胶、乙烯醋酸乙烯橡胶、丙烯酸酯橡胶、聚氨酯橡胶、聚酯树脂、丙烯酸树脂等。
无机填充剂可举出高岭土、烧结粘土、膨润土、滑石、硅藻土、石膏、硫酸钡、硅酸铝等。无机填充剂的配混量只要能发挥填塞功能就没有特殊限制,通常优选占构成填塞层的组合物总量的50~98质量%。
填塞层的表面光泽度优选5%以上,更优选8%以上,特别优选10%以上。此外,光泽度的上限没有特殊限制,但因为过高的话会使其对垫化层的附着力变弱,因而优选40%以下,更优选20%以下,特别优选15%以下。
在基材的一个或两个表面设置填塞层的方法可进行如下:将具有填塞功能的成分在分散介质或溶剂中稀释得到的液态填塞层用组合物涂布在基材的一个或两个表面,并使之干燥。
分散介质或溶剂可举出水或者甲苯、乙酸乙酯、丁酮等有机溶剂等。
填塞层的厚度没有特殊限制,通常,作为干燥后的涂布量,优选1~30g/m2,更优选2~20g/m2,特别优选3~15g/m2。
予以说明,涂布方法,例如可使用凹版涂布法、棒涂法、喷涂法、旋转涂布法、气刀涂布法、辊涂法、刮刀涂布法、门辊涂布法、模头式涂布法等。
此外,作为干燥方法,例如可采用通过热风干燥炉等进行热干燥的方法等。干燥温度没有特殊限制,优选100~200℃,干燥时间优选10秒~5分钟。
垫化层是给予垫化层的表面上设置的脱模层的表面以垫子状的微细凹凸的层,在垫化层的表面上形成有垫子状的微细凹凸。垫化层的垫子状的表面,优选其光泽度为1.5~8%。此外,该垫子状的表面,优选其算术平均表面粗糙度为5~30μm,特别优选为10~20μm。
垫化层由树脂和成垫剂组成。作为树脂,可举出丙烯酸系树脂、聚烯烃系树脂、聚酯系树脂、聚乙烯醇系树脂、聚苯乙烯系树脂等各种可形成保护膜的树脂。
成垫剂不溶于垫化层中含有的皮膜形成性树脂以及分散介质、溶剂,可在垫化层的表面形成微细凹凸。
成垫剂可举出微粒,具体地可举出无机微粒、有机微粒。无机微粒可举出二氧化硅、碳酸钙、滑石、高岭土、氧化钛、氧化锌、氧化铝、氢氧化镁、氢氧化铝等微粒。此外,有机微粒可举出淀粉、交联淀粉、三聚氰胺树脂、尼龙树脂、聚苯乙烯、聚丙烯树脂、丙烯酸树脂等微粒。
成垫剂的平均粒径没有特殊限制,通常优选为0.5~30μm,更优选1~20μm,特别优选2~10μm。成垫剂既可以单独使用1种,也可以2种以上组合使用。
成垫剂的配混量可根据垫化层表面的微细凹凸形状的程度适当选定,优选设定为使表面光泽度达1.5~8%。通常,优选相对于树脂和成垫剂的合计量为30~70质量%。
也可以在垫化层中适当配混其他添加剂。其他添加剂可举出分散剂、流平剂、抗氧化剂、紫外吸收剂、消泡剂、染料、颜料等。
垫化层的厚度没有特殊限制,通常,作为干燥后的涂布量,优选1~30g/m2,更优选2~20g/m2,特别优选3~15g/m2。
垫化层可设置在基材的一个表面或两个表面上。
垫化层设置在基材的一个表面或两个表面可按如下方法进行,将树脂和成垫(mat)剂在分散介质或溶剂中稀释得到的液态垫化层用组合物涂布在基材的一个或两个表面,并使之干燥。
分散介质或溶剂等可举出上述的水、有机溶剂等。
分散介质或溶剂的含量没有特殊限制,通常优选为液态垫化层用组合物总量的50~95质量%。
予以说明,涂布方法可采用与上述填塞层的涂布方法相同的方法。
此外,干燥温度没有特殊限制,优选100~200℃,干燥时间优选10秒~5分钟。
脱模层可通过在垫化层表面的垫子状的微细凹凸上涂布脱模层用组合物来形成。由于脱模层很薄地涂布在垫化层的表面,故可以使脱模层的表面形成与垫化层表面的垫子状的微细凹凸大致相同的形状,而且,通过脱模层中含有的无机或有机超微粒子也可以形成微细的凹凸。脱模层的表面的光泽度优选1.5~2.7%,更优选1.5~2.6%,特别优选1.5~2.5%。此外,该垫子状的表面优选算术平均表面粗糙度为5~30μm,特别优选10~20μm。
脱模层含有脱模性树脂与平均粒径为0.01~0.3μm的超微粒子。
脱模性树脂可举出硅树脂,醇酸系树脂,羟甲基三聚氰胺系树脂、甲氧基羟甲基三聚氰胺系树脂等三聚氰胺系树脂,丙烯酸系树脂等热固性或电离放射线固化性树脂等,优选硅树脂,特别优选加成型硅树脂。
平均粒径为0.01~0.3μm的超微粒子不溶于脱模性树脂以及分散介质、溶剂,可在脱模层的表面形成微细凹凸。
平均粒径为0.01~0.3μm的超微粒子可举出平均粒径为0.01~0.3μm的无机或有机超微粒子。无机或有机超微粒子可使用作为成垫剂的前述材料组成的超微粒子。
超微粒子的平均粒径为0.01~0.3μm,优选0.01~0.1μm,特别优选0.01~0.05μm。超微粒子既可以单独使用1种,也可以2种以上组合使用。
平均粒径为0.01~0.3μm的超微粒子的配混量根据脱模层表面的微细凹凸形状的程度适当选定即可,通常,优选相对于脱模性树脂和平均粒径为0.01~0.3μm的超微粒子的合计量为10~70质量%,特别优选20~50质量%。
也可以在脱模层中适当配混其他添加剂。其他添加剂可举出催化剂、流平剂、表面活性剂、染料、分散剂等。催化剂用于促进树脂的固化,催化剂的配混量,通常优选相对于树脂100质量份为0.5~3质量份。
在垫化层的表面设置脱模层可如下进行,将脱模性树脂和无机或有机超微粒子在分散介质或溶剂中稀释得到的液态脱模层用组合物涂布在垫化层的表面,并使之干燥。
脱模层的厚度没有特殊限制,通常,作为干燥后的涂布量,优选0.1~15g/m2,更优选0.5~10g/m2,特别优选1~5g/m2。脱模层的涂布量不足0.1g/m2时,有时导致剥离性能不稳定。另一方面,脱模层的涂布量超过15g/m2时,将脱模片材缠绕成辊状时的脱模层面变得易与脱模片材背面发生粘连,有时由于粘连而导致脱模层面的剥离性能低下。
脱模层的形成方法可如下进行,将含有脱模性树脂、无机或有机超微粒子、和分散介质或溶剂的液态脱模层用组合物涂布在1个或2个垫化层的表面,进行干燥并固化。
予以说明,涂布方法可采用与上述填塞层的涂布方法相同的方法。
此外,干燥方法例如可采用通过热风干燥炉等进行热干燥的方法等。干燥温度没有特殊限制,优选100~200℃,干燥时间优选10秒~5分钟。
分散介质或溶剂可举出甲苯、二甲苯等芳烃,己烷、庚烷、辛烷等脂肪烃,二甲酮、丁酮、二乙酮、环己酮等酮类等。分散介质或溶剂既可以单独使用1种,也可以使用2种以上的混合物。
分散介质或溶剂的量适当设定在使涂布时的粘度在适当范围内即可,液态脱模层用组合物的固体成分比例优选为10~50质量%,特别优选为20~40质量%。
本发明的脱模片材的脱模层的剥离力通过实施例所述的测定方法测定,优选为50~300mN/3cm。
采用本发明的脱模片材制造合成皮革、装饰板等成型品的方法可举出公知的浆涂法(例如制造聚氯乙烯树脂合成皮革的方法)、干式法(例如制造聚氨酯树脂合成皮革的方法)等。
具体来说,可在脱模片材的脱模层的表面形成树脂组合物层,然后使之固化,接着从脱模片材将其剥离,而得到树脂成型品。
例如,作为制造合成皮革的具体例子如下所述,在脱模片材的脱模层的表面涂布合成皮革的表皮层用树脂组合物,加热干燥,使表皮层形成有保护膜后,在其上使用粘合剂贴合基布,干燥、熟化后,通过剥离脱模片材,可以制造具有垫子状的表面的合成皮革。同样地,也可以制造装饰板。
实施例
以下,通过实施例更详细地说明本发明。但本发明并不局限于这些实施例的范围。
按如下方法对本发明的实施例和比较例所得的脱模片材的性能进行评价。
(1)光泽度
使用光泽度计((株)村上色彩技术研究所制、GM-26D型),在75°的角度测定垫化层和脱模层的光泽。
(2)初始剥离力
在脱模片材的脱模层的表面涂布一液型聚氨酯树脂溶液(大日本油墨工业(株)制、商品名“Chrisbon 5516S”),使干燥后的膜厚达20μm,在热风干燥机中,在130℃下干燥2分钟后,切割成20cm×3cm的大小,对所切割的材料参照JIS K0237,以3cm宽测定剥离力。
(3)表面状态
目测观察脱模片材的脱模层的表面有无弹力及有无深浅不匀,按下述标准进行评价。
○:无弹力,无深浅不均
×:有弹力,存在深浅不均
(4)脱模片材的反复剥离性试验
目测比较观察最初使用脱模片材制成的合成皮革的光泽和第5次使用该脱膜片材制成的合成皮革的光泽。
○:几乎没有光泽变化
×:存在明显光泽变化
(实施例1)
基材片使用127g/m2的优质纸(日本制纸(株)制),用气刀涂布机在该基材片的单面涂布由高岭土100质量份、苯乙烯-丁二烯橡胶10质量份、和水160质量份组成的液态组合物,使其干燥后的涂布量达12g/m2,干燥后形成填塞层。填塞层的表面光泽度为13%。
在该填塞层的表面用气刀涂布机涂布作为聚乙烯醇树脂((株)Kurare制、商品名“PVA-117”)10.5质量份、成垫剂(松谷化学工业(株)制、商品名“松谷桔梗”、淀粉、平均粒径5μm)10.0质量份、和水136.2质量份的混合物的液态垫化层用组合物,使之干燥后的涂布量达5g/m2,在160℃下干燥30秒,形成表面具有垫子状的微细凹凸形状的垫化层。垫化层的表面光泽度为2.0%,算术平均表面粗糙度为15μm。
然后,在上述垫化层的表面用棒涂机涂布作为加成型硅树脂(信越化学工业(株)制、商品名“X-62-2791”)100质量份、二氧化硅超微粒子粉末(日产化学工业(株)制、商品名“MEK-ST”、平均粒径0.03μm)50质量份、催化剂(信越化学工业(株)制、商品名“PL-50T”)1质量份、和溶剂(甲苯/丁酮(质量比7/3)的混合物)350质量份的混合物的液态脱模层用组合物,使之干燥后的涂布量达2g/m2,在175℃干燥1分钟,形成脱模层,制成脱模片材。按上述试验方法对所得脱模片材进行性能评价。其结果如表1所示。
(实施例2)
在实施例1中,作为垫化层,用气刀涂布机涂布作为SBR树脂(JSR(株)制、商品名“0614”、苯乙烯-丁二烯橡胶树脂)12.0质量份、成垫剂(松谷化学工业(株)制、商品名“松谷桔梗”、淀粉、平均粒径5μm)10.0质量份、增粘剂(东亚合成(株)、商品名“Alone-7180”、甲基丙烯酸共聚物)0.6质量份、及水146.6质量份的混合物的液态垫化层用组合物,使之干燥后的涂布量达5g/m2,在160℃下干燥30秒,形成表面具有垫子状的微细凹凸形状的垫化层,除此以外,与实施例1同样操作,制成脱模片材。垫化层的表面光泽度为7.0%,算术平均表面粗糙度为15μm。按上述试验方法对所得脱模片材进行性能评价。其结果如表1所示。
表1
实施例1 | 实施例2 | 比较例1 | 比较例2 | 比较例3 | |
脱模层的表面光泽度(%) | 1.9 | 2.5 | 2.6 | 2.1 | 2.6 |
脱模层的算术平均表面粗糙度(μm) | 15 | 15 | 15 | 15 | 20 |
初识剥离力(mN/3cm) | 150 | 150 | 150 | 150 | 180 |
表面状态 | ○ | ○ | × | × | ×(存在二氧化硅微粒脱落) |
光泽变化 | ○ | ○ | × | × | × |
(比较例1)
除了在实施例1中不形成垫化层,而是在粘土涂布纸上直接形成脱模层以外,其余与实施例1同样操作,制成脱模片材。按上述试验方法对所得脱模片材进行性能评价。其结果如表1所示。
(比较例2)
除了实施例1中所形成的脱模层中不含有超微粒子以外,其余与实施例1同样操作,制成脱模片材。按上述试验方法对所得脱模片材进行性能评价。其结果如表1所示。
(比较例3)
除了在实施例1中,代替脱模层中的平均粒径0.03μm的二氧化硅超微粒子而含有平均粒径1μm的二氧化硅微粒以外,其余与实施例1同样操作,制成脱模片材。按上述试验方法对所得脱模片材进行性能评价。其结果如表1所示。
(实施例3)
在实施例1所得脱模片材的脱模层的表面用刀涂法涂布混合聚氯乙烯树脂100质量份、作为增塑剂的邻苯二甲酸二辛酯60质量份、发泡剂5质量份、稳定剂3质量份、作为着色剂的炭黑10质量份而成的糊状的聚氯乙烯树脂组合物,使之干燥时的涂布量达180g/m2,在190℃下干燥2分钟,然后,通过粘合剂在该表面贴合基布,干燥、熟化后,通过剥离脱模片材,制成聚氯乙烯树脂合成皮革,结果,所得聚氯乙烯树脂合成皮革具有优良的垫子状的表面。
进一步地,采用剥离下来的脱模片材,通过将上述同样的操作重复4次,制造聚氯乙烯树脂合成皮革,结果,脱模片材未破损,并且,第2~5次制成的聚氯乙烯树脂合成皮革均具有优良的垫子状的表面。
(实施例4)
除了在实施例3中使用由实施例2制得的脱模片材代替实施例1制得的脱模片材以外,与实施例3同样地,反复操作5次,制造聚氯乙烯树脂合成皮革,结果,脱模片材未破损,并且,第1~5次制成的聚氯乙烯树脂合成皮革均具有优良的垫子状的表面。
本发明的脱模材料可用作工程片材等转移片材。
Claims (5)
1.脱模片材,其特征在于,在基材片的至少一个表面上设置有表面形成有垫子状的微细凹凸的垫化层,在该垫化层的表面设置有脱模层,该脱模层由含有平均粒径为0.01~0.3μm的超微粒子的脱模性树脂的涂膜层形成。
2.如权利要求1所述的脱膜片材,其特征在于,垫化层是由含有平均粒径为0.5~30μm的超微粒子的涂膜层形成的。
3.如权利要求1或2所述的脱膜片材,其特征在于,在脱模层中含有的超微粒子为二氧化硅超微粒子。
4.如权利要求1~3中任一项所述的脱膜片材,其特征在于,脱模层的表面光泽度为1.5~2.5%。
5.表面为垫子状的树脂成型品,其特征在于,在权利要求1~4中任一项所述的脱模片材的脱模层表面形成树脂组合物层,然后使之固化,再从脱膜片材上将之剥离而得到。
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EP1767345B1 (en) | 2017-12-20 |
EP1767345A4 (en) | 2009-11-25 |
KR20070033420A (ko) | 2007-03-26 |
TWI362996B (en) | 2012-05-01 |
TW200615139A (en) | 2006-05-16 |
WO2006006713A1 (ja) | 2006-01-19 |
JPWO2006006713A1 (ja) | 2008-05-01 |
US20070202301A1 (en) | 2007-08-30 |
US8790767B2 (en) | 2014-07-29 |
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