CN111070611A - 一种抗老化聚烯烃热收缩薄膜的制备方法 - Google Patents

一种抗老化聚烯烃热收缩薄膜的制备方法 Download PDF

Info

Publication number
CN111070611A
CN111070611A CN201911417453.3A CN201911417453A CN111070611A CN 111070611 A CN111070611 A CN 111070611A CN 201911417453 A CN201911417453 A CN 201911417453A CN 111070611 A CN111070611 A CN 111070611A
Authority
CN
China
Prior art keywords
supply
shrinkable film
aging
melt stream
polyolefin heat
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
Application number
CN201911417453.3A
Other languages
English (en)
Other versions
CN111070611B (zh
Inventor
傅文光
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Sunward Industrial Co Ltd
Original Assignee
Shanghai Sunward Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shanghai Sunward Industrial Co Ltd filed Critical Shanghai Sunward Industrial Co Ltd
Priority to CN201911417453.3A priority Critical patent/CN111070611B/zh
Publication of CN111070611A publication Critical patent/CN111070611A/zh
Application granted granted Critical
Publication of CN111070611B publication Critical patent/CN111070611B/zh
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001Combinations of extrusion moulding with other shaping operations
    • B29C48/0018Combinations of extrusion moulding with other shaping operations combined with shaping by orienting, stretching or shrinking, e.g. film blowing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/36Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/395Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/36Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/49Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using two or more extruders to feed one die or nozzle
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/92Measuring, controlling or regulating
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C55/00Shaping by stretching, e.g. drawing through a die; Apparatus therefor
    • B29C55/005Shaping by stretching, e.g. drawing through a die; Apparatus therefor characterised by the choice of materials
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C55/00Shaping by stretching, e.g. drawing through a die; Apparatus therefor
    • B29C55/28Shaping by stretching, e.g. drawing through a die; Apparatus therefor of blown tubular films, e.g. by inflation
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00Layered products comprising a layer of synthetic resin
    • B32B27/06Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00Layered products comprising a layer of synthetic resin
    • B32B27/18Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B32B27/20Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00Layered products comprising a layer of synthetic resin
    • B32B27/32Layered products comprising a layer of synthetic resin comprising polyolefins
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00Indexing scheme relating to extrusion moulding
    • B29C2948/92Measuring, controlling or regulating
    • B29C2948/92504Controlled parameter
    • B29C2948/9258Velocity
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00Indexing scheme relating to extrusion moulding
    • B29C2948/92Measuring, controlling or regulating
    • B29C2948/92504Controlled parameter
    • B29C2948/92704Temperature
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29KINDEXING 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
    • B29K2023/00Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04Polymers of ethylene
    • B29K2023/06PE, i.e. polyethylene
    • B29K2023/0608PE, i.e. polyethylene characterised by its density
    • B29K2023/0625LLDPE, i.e. linear low density polyethylene
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29KINDEXING 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
    • B29K2023/00Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/10Polymers of propylene
    • B29K2023/12PP, i.e. polypropylene
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29LINDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2007/00Flat articles, e.g. films or sheets
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00Properties of the layers or laminate
    • B32B2307/50Properties of the layers or laminate having particular mechanical properties
    • B32B2307/54Yield strength; Tensile strength
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00Properties of the layers or laminate
    • B32B2307/50Properties of the layers or laminate having particular mechanical properties
    • B32B2307/552Fatigue strength

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

本发明公开了一种抗老化聚烯烃热收缩薄膜的制备方法,其中一种抗老化聚烯烃热收缩薄膜的制备方法,其包括,制备第一供给熔融料流,其为将线性低密度聚乙烯LLDPE、爽滑剂和抗UV添加剂熔融;制备第二供给熔融料流,其为将三元共聚聚丙烯TPP、开口剂、抗UV添加剂熔融;将所述第一供给熔融料流和所述第二供给熔融料流经共挤模头挤出;水冷定型、牵引后二次牵引、加热、吹胀后风冷定型、息泡展平,收卷结束;其中,所述第一供给熔融料流与所述第二供给熔融料流的料流量供应比例为(1~5):(1~5)。该热收缩薄膜包装的产品,可以解决当其需要放在室外进行储存时减缓老化的现象,避免封口强度下降及在搬运过程中会出现封口开裂的现象。

Description

一种抗老化聚烯烃热收缩薄膜的制备方法
技术领域
本发明属于化工技术领域,具体涉及一种抗老化聚烯烃热收缩薄膜的制备方法。
背景技术
聚烯烃热收缩膜是用包装机对薄膜热切封口和加热收缩实现热缩包装的。有些由聚烯烃热收缩薄膜包装的产品需要放在室外进行储存,在光照和氧的作用下聚烯烃热收缩薄膜分子链会部分(断裂)降解,薄膜老化,从而导致封口强度下降。当被包装物为较重产品时,在搬运过程中会出现封口开裂的现象,基于此研发抗老化聚烯烃热收缩薄膜。
发明内容
本部分的目的在于概述本发明的实施例的一些方面以及简要介绍一些较佳实施例。在本部分以及本申请的说明书摘要和发明名称中可能会做些简化或省略以避免使本部分、说明书摘要和发明名称的目的模糊,而这种简化或省略不能用于限制本发明的范围。
鉴于上述的技术缺陷,提出了本发明。
因此,作为本发明其中一个方面,本发明克服现有技术中存在的不足,提供一种抗老化聚烯烃热收缩薄膜的制备方法。
为解决上述技术问题,本发明提供了如下技术方案:一种抗老化聚烯烃热收缩薄膜的制备方法,其包括,制备第一供给熔融料流,其为将线性低密度聚乙烯LLDPE、爽滑剂和抗UV添加剂熔融;制备第二供给熔融料流,其为将三元共聚聚丙烯TPP、开口剂、抗UV添加剂熔融;将所述第一供给熔融料流和所述第二供给熔融料流经共挤模头挤出;水冷定型、牵引后二次牵引、加热、吹胀后风冷定型、息泡展平,收卷结束;其中,所述第一供给熔融料流与所述第二供给熔融料流的料流量供应比例为(1~5):(1~5)。
作为本发明所述的抗老化聚烯烃热收缩薄膜的制备方法的优选方案,其中:所述第一供给熔融料流与所述第二供给熔融料流的熔融参数为螺杆转速为100~140r/min,160~240℃熔融充分,所述挤出,其为在温度180~220℃、转速为120~165r/min下,混合3~5min。
作为本发明所述的抗老化聚烯烃热收缩薄膜的制备方法的优选方案,其中:所述加热,其为通过红外线加热至塑料管坯到高弹态90~130℃。
作为本发明所述的抗老化聚烯烃热收缩薄膜的制备方法的优选方案,其中:所述爽滑剂为LDPE、芥酸酰胺和油酸酰胺的混合物。
作为本发明所述的抗老化聚烯烃热收缩薄膜的制备方法的优选方案,其中:所述开口剂为低密度聚乙烯LDPE(C2H4)n和二氧化硅SiO2混合物。
作为本发明所述的抗老化聚烯烃热收缩薄膜的制备方法的优选方案,其中:所述抗UV添加剂包括苯甲酸类﹑二笨甲酮类﹑苯并三唑类、受阻胺类中的一种或几种。
作为本发明所述的抗老化聚烯烃热收缩薄膜的制备方法的优选方案,其中:所述第一供给熔融料流与所述第二供给熔融料流的数量比例为2:1,所述第一供给熔融料流的数量为偶数。
作为本发明其中一个方面,本发明提供一种抗老化聚烯烃热收缩薄膜,其包括第一供给熔融料流层和第二供给熔融料流层,所述第一供给熔融料流层包括线性低密度聚乙烯、双滑剂、抗老化剂中的一种或几种,所述第二供给熔融料流层的成分包括三元共聚聚丙烯、开口剂、抗老化剂中的一种或几种。
作为本发明所述的抗老化聚烯烃热收缩薄膜的优选方案,其中:拉伸强度可达110N/mm2,断裂伸长率可达100%
本发明的有益效果:。
本发明制备了新型聚烯烃热收缩薄膜包装的产品,可以解决当其需要放在室外进行储存时减缓老化的现象,避免封口强度下降及在搬运过程中会出现封口开裂的现象。
具体实施方式
为使本发明的上述目的、特征和优点能够更加明显易懂,下面结合具体实施例对本发明的具体实施方式做详细的说明。
在下面的描述中阐述了很多具体细节以便于充分理解本发明,但是本发明还可以采用其他不同于在此描述的其它方式来实施,本领域技术人员可以在不违背本发明内涵的情况下做类似推广,因此本发明不受下面公开的具体实施例的限制。
其次,此处所称的“一个实施例”或“实施例”是指可包含于本发明至少一个实现方式中的特定特征、结构或特性。在本说明书中不同地方出现的“在一个实施例中”并非均指同一个实施例,也不是单独的或选择性的与其他实施例互相排斥的实施例。
实施例1:
(1)将质量分数为95%线性低密度聚乙烯LLDPE(购买于美国陶氏公司,型号为DOWLEX2045,密度为0.918~0.935g/cm)、3%爽滑剂(LDPE、芥酸酰胺和油酸酰胺的混合物,其中,酰胺类的有效含量为7%,油酸酰胺和芥酸酰胺的质量分数比为1.5:1)和2%抗UV添加剂(KZPP04,购买于Schulman公司)通过真空吸料的方式加入至一台单螺杆挤出机中熔融,单螺杆挤出机的螺杆转速为115r/min,200℃熔融充分。
(2)将96%三元共聚聚丙烯TPP(新加坡TPC的FS6612L产成品)、2%开口剂(为低密度聚乙烯LDPE(C2H4)n和二氧化硅SiO2混合物,二氧化硅有效含量为20%)和2%抗UV添加剂(KZPP04,购买于Schulman公司)通过真空吸料的方式加入至另一台单螺杆中熔融,单螺杆挤出机的螺杆转速为125r/min,180℃熔融充分;
步骤(1)同时使用两台单螺杆挤出机进行,利用步骤(1)中两台单螺杆(第一台和第二台)和步骤(2)中一台单螺杆供给熔融料流,控制三台单螺杆中料流供应比例,第一台:第二台:第三台=1:5:1,再在三层共挤模头内(温度为210℃,螺杆转速为145r/min)汇合,快速充分混合(3~5min)后,启动三层共挤吹膜机一次性三层共挤成型,共挤出得到多层复合片材,使用水冷机进行水冷定型(冷水温度15℃),使用牵引机将膜导入干燥机,牵引后二次牵引、红外线二次加热(辐射波长为20~30微米,加热塑料管坯到高弹态110~118℃)、吹胀(横向吹胀比5倍、纵向拉伸比5倍)风冷定型(风冷温度25℃)、息泡展平,由牵引机导入收卷机结束。预热机,预热后(150℃),双向拉伸,得抗老化聚烯烃热收缩薄膜。
实施例2:
(1)将质量分数为95%线性低密度聚乙烯LLDPE(购买于美国陶氏公司,型号为DOWLEX2045,密度为0.918~0.935g/cm)、3%爽滑剂(LDPE、芥酸酰胺和油酸酰胺的混合物,其中,酰胺类的有效含量为7%,油酸酰胺和芥酸酰胺的质量分数比为1:1)和2%抗UV添加剂(KZPP04,购买于Schulman公司)通过真空吸料的方式加入至一台单螺杆中熔融,单螺杆挤出机的螺杆转速为115r/min,190℃熔融充分。
(2)将96%三元共聚聚丙烯TPP(新加坡TPC的FS6612L产成品)、2%开口剂(为低密度聚乙烯LDPE(C2H4)n和二氧化硅SiO2混合物,二氧化硅有效含量为20%)和2%抗UV添加剂(KZPP04,购买于Schulman公司)通过真空吸料的方式加入至另一台单螺杆中熔融,单螺杆挤出机的螺杆转速为120r/min,200℃熔融充分;
利用步骤(1)中两台单螺杆(第一台和第二台)和步骤(2)中一台单螺杆供给熔融料流,控制三台单螺杆中料流供应比例,第一台:第二台:第三台=1:5:1,再在三层共挤模头内(温度为220℃,螺杆转速为150r/min)汇合,充分混合后,启动三层共挤吹膜机一次性三层共挤成型,共挤出得到多层复合片材,使用水冷机进行水冷定型(冷水温度15℃),使用牵引机将膜导入干燥机,牵引后二次牵引、红外线二次加热(辐射波长为10~20微米,加热塑料管坯到高弹态110~118℃)、吹胀(横向吹胀比5倍、纵向拉伸比5倍)风冷定型(风冷温度25℃)、息泡展平,由牵引机导入收卷机结束。预热机,预热后(130℃),双向拉伸,得抗老化聚烯烃热收缩薄膜。
实施例3:
(1)将质量分数为95%线性低密度聚乙烯LLDPE(购买于美国陶氏公司,型号为DOWLEX2045,密度为0.918~0.935g/cm)、3%爽滑剂(LDPE、芥酸酰胺和油酸酰胺的混合物,其中,酰胺类的有效含量为7%,油酸酰胺和芥酸酰胺的质量分数比为1.2:1)和2%抗UV添加剂(KZPP04,购买于Schulman公司)通过真空吸料的方式加入至一台单螺杆挤出机中熔融,单螺杆挤出机的螺杆转速为115r/min,200℃熔融充分。
(2)将96%三元共聚聚丙烯TPP(新加坡TPC的FS6612L产成品)、2%开口剂(为低密度聚乙烯LDPE(C2H4)n和二氧化硅SiO2混合物,二氧化硅有效含量为20%)和2%抗UV添加剂(KZPP04,购买于Schulman公司)通过真空吸料的方式加入至另一台单螺杆中熔融,单螺杆挤出机的螺杆转速为120r/min,200℃熔融充分;
步骤(1)同时使用两台单螺杆挤出机进行,利用步骤(1)中两台单螺杆(第一台和第二台)和步骤(2)中一台单螺杆供给熔融料流,控制三台单螺杆中料流供应比例,第一台:第二台:第三台=1:5:1,再在三层共挤模头内(温度为200℃,螺杆转速为145r/min)汇合,快速充分混合(3~5min)后,启动三层共挤吹膜机一次性三层共挤成型,共挤出得到多层复合片材,使用水冷机进行水冷定型(冷水温度15℃),使用牵引机将膜导入干燥机,牵引后二次牵引、红外线二次加热(辐射波长为40~50微米,加热塑料管坯到高弹态110~118℃)、吹胀(横向吹胀比5倍、纵向拉伸比5倍)风冷定型(风冷温度25℃)、息泡展平,由牵引机导入收卷机结束。预热机,预热后(150℃),双向拉伸,得抗老化聚烯烃热收缩薄膜。
实施例4:
(1)将质量分数为95%线性低密度聚乙烯LLDPE(购买于美国陶氏公司,型号为DOWLEX2045,密度为0.918~0.935g/cm)、3%爽滑剂(LDPE、芥酸酰胺和油酸酰胺的混合物,其中,酰胺类的有效含量为7%,油酸酰胺和芥酸酰胺的质量分数比为1.2:1)和2%抗UV添加剂(PAO 3360,购买于Constab公司)通过真空吸料的方式加入至一台单螺杆中熔融,单螺杆挤出机的螺杆转速为115r/min,190℃熔融充分。
(2)将96%三元共聚聚丙烯TPP(新加坡TPC的FS6612L产成品)、2%开口剂(为低密度聚乙烯LDPE(C2H4)n和二氧化硅SiO2混合物,二氧化硅有效含量为20%)和2%抗UV添加剂(KZPP04,购买于Schulman公司)通过真空吸料的方式加入至另一台单螺杆中熔融,单螺杆挤出机的螺杆转速为120r/min,200℃熔融充分;
利用步骤(1)中两台单螺杆(第一台和第二台)和步骤(2)中一台单螺杆供给熔融料流,控制三台单螺杆中料流供应比例,第一台:第二台:第三台=1:5:1,再在三层共挤模头内(温度为220℃,螺杆转速为150r/min)汇合,充分混合后,启动三层共挤吹膜机一次性三层共挤成型,共挤出得到多层复合片材,使用水冷机进行水冷定型(冷水温度15℃),使用牵引机将膜导入干燥机,牵引后二次牵引、红外线二次加热(辐射波长为40~45微米,加热塑料管坯到高弹态110~118℃)、吹胀(横向吹胀比5倍、纵向拉伸比5倍)风冷定型(风冷温度25℃)、息泡展平,由牵引机导入收卷机结束。预热机,预热后(130℃),双向拉伸,得抗老化聚烯烃热收缩薄膜。
实施例5~8的实施方式参见实施例1,具体的不同如表1;对实施例1~8及市售抗老化聚烯烃热收缩薄膜进行性能检测,结果如表2、表3。
表1实施例5~8的热收缩膜的原料配比及工艺制备方案
Figure BDA0002351567460000061
Figure BDA0002351567460000071
表2
Figure BDA0002351567460000072
表3
Figure BDA0002351567460000081
应说明的是,以上实施例仅用以说明本发明的技术方案而非限制,尽管参照较佳实施例对本发明进行了详细说明,本领域的普通技术人员应当理解,可以对本发明的技术方案进行修改或者等同替换,而不脱离本发明技术方案的精神和范围,其均应涵盖在本发明的权利要求范围当中。

Claims (9)

1.一种抗老化聚烯烃热收缩薄膜的制备方法,其特征在于:包括,
制备第一供给熔融料流,其为将线性低密度聚乙烯LLDPE、爽滑剂和抗UV添加剂熔融;
制备第二供给熔融料流,其为将三元共聚聚丙烯TPP、开口剂、抗UV添加剂熔融;
将所述第一供给熔融料流和所述第二供给熔融料流经共挤模头挤出;
水冷定型、牵引后二次牵引、加热、吹胀后风冷定型、息泡展平,收卷结束;
其中,所述第一供给熔融料流与所述第二供给熔融料流的料流量供应比例为(1~5):(1~5)。
2.如权利要求1所述的抗老化聚烯烃热收缩薄膜的制备方法,其特征在于:所述第一供给熔融料流与所述第二供给熔融料流的熔融参数为螺杆转速为100~140r/min,160~240℃熔融充分,所述挤出,其为在温度180~220℃、转速为120~165r/min下,混合3~5min。
3.如权利要求1所述的抗老化聚烯烃热收缩薄膜的制备方法,其特征在于:所述加热,其为通过红外线加热至塑料管坯到高弹态90~130℃。
4.如权利要求1~3任一所述的抗老化聚烯烃热收缩薄膜的制备方法,其特征在于:所述爽滑剂为LDPE、芥酸酰胺和油酸酰胺的混合物。
5.如权利要求1~3任一所述的抗老化聚烯烃热收缩薄膜的制备方法,其特征在于:所述开口剂为低密度聚乙烯LDPE(C2H4)n和二氧化硅SiO2混合物。
6.如权利要求1~3任一所述的抗老化聚烯烃热收缩薄膜的制备方法,其特征在于:所述抗UV添加剂包括苯甲酸类﹑二笨甲酮类﹑苯并三唑类、受阻胺类中的一种或几种。
7.如权利要求1所述的抗老化聚烯烃热收缩薄膜的制备方法,其特征在于:所述第一供给熔融料流与所述第二供给熔融料流的数量比例为2:1,所述第一供给熔融料流的数量为偶数。
8.一种如权利要求1~7任一所述的抗老化聚烯烃热收缩薄膜,其特征在于:包括第一供给熔融料流层和第二供给熔融料流层,所述第一供给熔融料流层包括线性低密度聚乙烯、双滑剂、抗老化剂中的一种或几种,所述第二供给熔融料流层的成分包括三元共聚聚丙烯、开口剂、抗老化剂中的一种或几种。
9.如权利要求8所述的抗老化聚烯烃热收缩薄膜,其特征在于:拉伸强度可达110N/mm2,断裂伸长率可达100%。
CN201911417453.3A 2019-12-31 2019-12-31 一种抗老化聚烯烃热收缩薄膜的制备方法 Active CN111070611B (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911417453.3A CN111070611B (zh) 2019-12-31 2019-12-31 一种抗老化聚烯烃热收缩薄膜的制备方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911417453.3A CN111070611B (zh) 2019-12-31 2019-12-31 一种抗老化聚烯烃热收缩薄膜的制备方法

Publications (2)

Publication Number Publication Date
CN111070611A true CN111070611A (zh) 2020-04-28
CN111070611B CN111070611B (zh) 2023-04-11

Family

ID=70320993

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201911417453.3A Active CN111070611B (zh) 2019-12-31 2019-12-31 一种抗老化聚烯烃热收缩薄膜的制备方法

Country Status (1)

Country Link
CN (1) CN111070611B (zh)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112062987A (zh) * 2020-07-30 2020-12-11 上海森韦得实业有限公司 一种可生物降解的热收缩薄膜的制备方法
CN112063055A (zh) * 2020-07-30 2020-12-11 上海森韦得实业有限公司 一种可生物降解的热收缩薄膜的制备方法
CN112175285A (zh) * 2020-07-30 2021-01-05 上海森韦得实业有限公司 一种可降低碳排放的热收缩薄膜的制备方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0646064B1 (en) * 1993-04-09 1999-06-16 Viskase Corporation A cheese package, film, bag and process for packaging a co2 respiring foodstuff
CN101659142B (zh) * 2009-06-30 2012-04-25 湖北慧狮塑业股份有限公司 多功能流延聚烯烃增挺薄膜
CN102765190A (zh) * 2012-07-27 2012-11-07 江苏恒创包装材料有限公司 一种平膜法生产双向拉伸多层共挤聚烯烃热收缩膜的方法
CN108943929A (zh) * 2018-06-08 2018-12-07 黄山至德新材料科技有限公司 一种聚烯烃热收缩膜及其制备方法和应用
CN111231470A (zh) * 2020-04-03 2020-06-05 汕头市明佳热收缩膜有限公司 一种多层共挤聚乙烯热收缩膜及其制备方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0646064B1 (en) * 1993-04-09 1999-06-16 Viskase Corporation A cheese package, film, bag and process for packaging a co2 respiring foodstuff
CN101659142B (zh) * 2009-06-30 2012-04-25 湖北慧狮塑业股份有限公司 多功能流延聚烯烃增挺薄膜
CN102765190A (zh) * 2012-07-27 2012-11-07 江苏恒创包装材料有限公司 一种平膜法生产双向拉伸多层共挤聚烯烃热收缩膜的方法
CN108943929A (zh) * 2018-06-08 2018-12-07 黄山至德新材料科技有限公司 一种聚烯烃热收缩膜及其制备方法和应用
CN111231470A (zh) * 2020-04-03 2020-06-05 汕头市明佳热收缩膜有限公司 一种多层共挤聚乙烯热收缩膜及其制备方法

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112062987A (zh) * 2020-07-30 2020-12-11 上海森韦得实业有限公司 一种可生物降解的热收缩薄膜的制备方法
CN112063055A (zh) * 2020-07-30 2020-12-11 上海森韦得实业有限公司 一种可生物降解的热收缩薄膜的制备方法
CN112175285A (zh) * 2020-07-30 2021-01-05 上海森韦得实业有限公司 一种可降低碳排放的热收缩薄膜的制备方法

Also Published As

Publication number Publication date
CN111070611B (zh) 2023-04-11

Similar Documents

Publication Publication Date Title
CN111070611B (zh) 一种抗老化聚烯烃热收缩薄膜的制备方法
CN110978702B (zh) 一种热收缩膜及其制备方法和应用
SE460534B (sv) Flerskiktsfilm med kaernskikt av linjaer polyeten och ytterskikt av etenpolymer
CN105882078B (zh) 树脂poe应用在pof聚烯烃收缩膜中的方法
CN112356543B (zh) 一种高光泽高透明聚乙烯流延膜及其制备方法
WO2011062141A1 (ja) 樹脂発泡シート
US20230264449A1 (en) Tubular film for stretch hoods comprising recycled material
CN103009761B (zh) 一种高收缩率聚烯烃热收缩薄膜及其制造方法
JP5363280B2 (ja) 架橋ポリエチレンからなる再生樹脂組成物及び熱収縮性フィルム
CN110303747B (zh) 用于超高速、高热封性能、高收缩率包装的聚烯烃收缩膜
CN110303748B (zh) 一种较薄聚烯烃收缩膜及其生产工艺
CN103753825A (zh) 多层共挤低温收缩聚烯烃热收缩膜的生产方法
CN106626654A (zh) 聚烯烃双向拉伸膜及其制备方法
CN106065103A (zh) 一种高韧性高冲击强度热收缩膜包装袋的生产工艺
JP4919620B2 (ja) 3層架橋フィルム
CN110303741B (zh) 一种易洗脱标签膜及其制备方法
CN100427299C (zh) 低温高收缩聚烯烃热收缩薄膜的生产方法及生产的薄膜
CN106626655A (zh) 聚烯烃双向拉伸挂面膜及其制备方法
WO2021026993A1 (zh) 热收缩膜及其制备方法
JP2016215480A (ja) ポリエチレン系架橋シュリンクフィルム
CN105479714B (zh) 一种利用气压支撑一次成型制备缓冲复合纸板的方法
JP5722081B2 (ja) 収縮仕上がり性に優れたポリエチレン系架橋シュリンクフィルム
US20210283812A1 (en) Biaxially oriented polypropylene multilayer film and methods thereof
CN110328951B (zh) 交联聚烯烃热收缩薄膜及其制备方法
CN115635750A (zh) 一种耐低温的三层共挤重包装膜

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