CN107383586A - 一种热粘温度区域宽的封口热塑薄膜的制备方法 - Google Patents

一种热粘温度区域宽的封口热塑薄膜的制备方法 Download PDF

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CN107383586A
CN107383586A CN201710409242.XA CN201710409242A CN107383586A CN 107383586 A CN107383586 A CN 107383586A CN 201710409242 A CN201710409242 A CN 201710409242A CN 107383586 A CN107383586 A CN 107383586A
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film
fusing point
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杨福馨
李淑珍
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Bengbu Tiancheng Packaging Technology Co Ltd
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    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
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    • C08J5/18—Manufacture of films or sheets
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    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
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    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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    • C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
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    • C08J2425/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Derivatives of such polymers
    • C08J2425/02—Homopolymers or copolymers of hydrocarbons
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Abstract

本发明公开一种热粘温度区域宽的封口热塑薄膜的制备方法，原材料采用质量百分比计包括30－40%的PP、20－30%的PE、20－30%的PS和10－15%的ABS，制备工艺步骤如下：（1）采用双螺杆挤出机分段分区加料进行混炼，首先将PS和ABS混合在220—230℃高温区混炼15‑18分钟，然后加入PP在200—220℃中温区混炼10‑15分钟，最后加入PE在180—200℃低温区混炼6‑8分钟，混炼完成后挤出切粒，得到宽区域熔点的树脂颗粒；（2）将宽区域熔点的树脂颗粒通过吹膜或流延制膜工艺制得宽区域熔点的封口热塑薄膜；这种薄膜实现与多种塑料材质容器之间的热粘封接。

Description

一种热粘温度区域宽的封口热塑薄膜的制备方法
技术领域
本发明涉及一种热粘温度区域宽的封口热塑薄膜的制备方法。
背景技术
目前塑料包装容器使用的材料主要有PP、PE和PS，其封口办法主要是用热塑实现，这就要求封口薄膜和容器的塑料种类相同，原因是容器材料与封口材料必须有相同的热粘温度，不同塑料树脂的热粘温度（熔点）是不同的，PE的熔点是110－130℃，PP的熔点是130－160℃，PS的熔点是160－170℃，无法做到一种热塑薄膜同时与多种塑料材质容器之间的热粘封接。
发明内容
本发明的目的是提供一种熔点在110－170℃宽区域的封口热塑薄膜的制备方法，实现一种热塑薄膜同时与多种塑料材质容器之间的热粘封接。
本发明的目的是通过以下技术方案实现的，一种热粘温度区域宽的封口热塑薄膜的制备方法，原材料采用质量百分比计包括30－40%的PP、20－30%的PE、20－30%的PS和10－15%的ABS，制备工艺步骤如下：（1）采用双螺杆挤出机分段分区加料进行混炼，首先将PS和ABS混合在220—230℃高温区混炼15-18分钟，然后加入PP在200—220℃中温区混炼10-15分钟，最后加入PE在180—200℃低温区混炼6-8分钟，混炼完成后挤出切粒，得到宽区域熔点的树脂颗粒；（2）将宽区域熔点的树脂颗粒通过吹膜或流延制膜工艺制得宽区域熔点的封口热塑薄膜。
更进一步的技术方案是，原材料的质量配比为：35%的PP、25%的PE、25%的PS和15%的ABS。
有益效果：本发明是以PP、PE和PS树脂作为混合基材，以ABS作为交联剂，通过分段分区加料进行混炼，从而获得一种具有宽区域熔点的热塑性塑料树脂，经过吹膜得到封口热塑薄膜，这种薄膜实现与多种塑料材质容器之间的热粘封接。
具体实施方式
一种热粘温度区域宽的封口热塑薄膜的制备方法，原材料采用质量百分比计包括30－40%的PP、20－30%的PE、20－30%的PS和10－15%的ABS，制备工艺步骤如下：（1）采用双螺杆挤出机分段分区加料进行混炼，首先将PS和ABS混合在220—230℃高温区混炼15-18分钟，然后加入PP在200—220℃中温区混炼10-15分钟，最后加入PE在180—200℃低温区混炼6-8分钟，混炼完成后挤出切粒，得到宽区域熔点的树脂颗粒；（2）将宽区域熔点的树脂颗粒通过吹膜或流延制膜工艺制得宽区域熔点的封口热塑薄膜。
实施例一
实施例二
实施例三
树脂流动性和膜的流动性好坏与共混造粒时加入的树脂（PE、PP、PS）含量有关，ABS作为交联剂，其添加量的多少与基材的交联度好坏有关，故造粒时树脂的流动性和膜的流动性与共混造粒时加入的树脂比例（PE、PP、PS）必须满足原料配方比例要求。
按GBZBY28004《塑料薄膜包装袋热合强度测定方法》，使用智能电子拉力试验机对薄膜进行热封强度测试。制得的薄膜分别与单质PE、PP、PS薄膜或者容器进行热封。三种都能热封确定为成功，只要有一种不能封，就确定为不成功。
薄膜的热封强度与共混造粒时加入的树脂（PE、PP、PS）含量有关，加入量过少树脂流动性及膜的流动性好，但膜的热封强度会下降；加入量过多则不能成膜 。

Claims (2)

1.一种热粘温度区域宽的封口热塑薄膜的制备方法，其特征在于，原材料采用质量百分比计包括30－40%的PP、20－30%的PE、20－30%的PS和10－15%的ABS，制备工艺步骤如下：（1）采用双螺杆挤出机分段分区加料进行混炼，首先将PS和ABS混合在220—230℃高温区混炼15-18分钟，然后加入PP在200—220℃中温区混炼10-15分钟，最后加入PE在180—200℃低温区混炼6-8分钟，混炼完成后挤出切粒，得到宽区域熔点的树脂颗粒；（2）将宽区域熔点的树脂颗粒通过吹膜或流延制膜工艺制得宽区域熔点的封口热塑薄膜。
2.根据权利要求1所述一种热粘温度区域宽的封口热塑薄膜的制备方法，其特征在于，原材料的质量配比为：35%的PP、25%的PE、25%的PS和15%的ABS。
CN201710409242.XA 2017-06-02 2017-06-02 一种热粘温度区域宽的封口热塑薄膜的制备方法 Pending CN107383586A (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022247061A1 (zh) * 2021-05-28 2022-12-01 宁波讯强电子科技有限公司 再生ps塑料薄膜、声磁防盗标签、标签外壳及其制备方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1196742A (zh) * 1996-05-06 1998-10-21 蒙特尔技术有限公司 可控剥离强度可热封膜的聚烯烃组合物
CN1248988A (zh) * 1997-02-25 2000-03-29 埃克森化学专利公司 热封膜
CN1408756A (zh) * 2001-09-20 2003-04-09 东赛璐株式会社 热封膜及其用途

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1196742A (zh) * 1996-05-06 1998-10-21 蒙特尔技术有限公司 可控剥离强度可热封膜的聚烯烃组合物
CN1248988A (zh) * 1997-02-25 2000-03-29 埃克森化学专利公司 热封膜
CN1408756A (zh) * 2001-09-20 2003-04-09 东赛璐株式会社 热封膜及其用途

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022247061A1 (zh) * 2021-05-28 2022-12-01 宁波讯强电子科技有限公司 再生ps塑料薄膜、声磁防盗标签、标签外壳及其制备方法

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Application publication date: 20171124