CN103772865A - 一种食品保鲜膜及其制备方法 - Google Patents

一种食品保鲜膜及其制备方法 Download PDF

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CN103772865A
CN103772865A CN201410024668.XA CN201410024668A CN103772865A CN 103772865 A CN103772865 A CN 103772865A CN 201410024668 A CN201410024668 A CN 201410024668A CN 103772865 A CN103772865 A CN 103772865A
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parts
preparation
polyvinyl alcohol
chitosan
preservative film
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赵平
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NANTONG TIANHE PACKING Co Ltd
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NANTONG TIANHE PACKING Co Ltd
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    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0017—Combinations of extrusion moulding with other shaping operations combined with blow-moulding or thermoforming
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B29C48/10—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/395—Means 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
    • B29C48/40—Means 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 using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/92—Measuring, controlling or regulating
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/9258—Velocity
    • B29C2948/9259—Angular velocity
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92704—Temperature
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92819—Location or phase of control
    • B29C2948/92857—Extrusion unit
    • B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
    • B29C2948/92885—Screw or gear
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92819—Location or phase of control
    • B29C2948/92857—Extrusion unit
    • B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
    • B29C2948/92895—Barrel or housing

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jellies, Jams, And Syrups (AREA)

Abstract

本发明公开了一种食品保鲜膜及其制备方法，组分及各组分的质量分数如下：聚乙烯醇5~10份，壳聚糖3~8份，胶黏剂 0.5~1份，戊二醛0.1~0.3份，乙酸0.05~0.1份，水 70~80份。所述胶黏剂为明胶或者琼脂。所述食品保鲜膜的制备方法，将乙酸溶于水中，然后加入壳聚糖，加热至70~80℃，搅拌至完全溶解，然后加入聚乙烯醇、胶黏剂和戊二醛搅拌得到粘稠的溶胶，倒入双螺杆挤出机中，挤出塑炼，吹膜。本发明提供一种食品保鲜膜及其制备方法，原材料聚乙烯醇和壳聚糖均是安全无毒材料，制备过程中的胶黏剂采用食品级明胶和琼脂，胶粘效果好，安全，保鲜膜可以直接与食品接触，不会带来环境污染的问题。

Description

一种食品保鲜膜及其制备方法
技术领域
    本发明属于包装材料技术领域，具体涉及一种食品保鲜膜及其制备方法。
背景技术
食品保鲜膜作为一种新型卫生包装用品，在家庭中的使用日益普及，他在防止冰箱中各种菜肴串味、保持菜肴新鲜度方面有一定作用。目前在食品保鲜膜的加工过程中，为了改善制品应用性能，常加入多种加工助剂，包括增塑剂、稳定剂、抗菌剂、交联剂等，制得的保鲜膜难降解，带来很大的环境隐患。
发明内容
本发明的目的是要提供一种食品保鲜膜及其制备方法，原材料安全无毒，制备工艺简单易行。
为了实现上述目的，本发明采用的技术方案为：一种食品保鲜膜，组分及各组分的质量分数如下：聚乙烯醇 5~10份，壳聚糖 3~8份，胶黏剂  0.5~1份，戊二醛 0.1~0.3份，乙酸0.05~0.1份，水  70~80份。
所述胶黏剂为明胶或者琼脂。
所述食品保鲜膜的制备方法，将乙酸溶于水中，然后加入壳聚糖，加热至70~80℃，搅拌至完全溶解，然后加入聚乙烯醇、胶黏剂和戊二醛搅拌得到粘稠的溶胶，倒入双螺杆挤出机中，挤出塑炼，吹膜。
有益效果：本发明提供一种食品保鲜膜及其制备方法，原材料聚乙烯醇和壳聚糖均是安全无毒材料，制备过程中的胶黏剂采用食品级明胶和琼脂，胶粘效果好，安全，保鲜膜可以直接与食品接触，而且易降解不会带来环境污染的问题。
具体实施方式
实施例1：
一种食品保鲜膜，组分及各组分的质量分数如下：聚乙烯醇 5份，壳聚糖 3份，胶黏剂 明胶 0.5份，戊二醛 0.1份，乙酸0.05份，水  70份。
所述食品保鲜膜的制备方法，将乙酸溶于水中，然后加入壳聚糖，加热至70℃，搅拌至完全溶解，然后加入聚乙烯醇、胶黏剂和戊二醛搅拌得到粘稠的溶胶，倒入双螺杆挤出机中，挤出塑炼，吹膜。挤出第1～5 区的温度分别为115 ℃、135 ℃、155 ℃、175 ℃、175 ℃, 机头温度为155 ℃, 转速为20 r/ min。吹膜工艺中原材料的挤出造粒温度为135 ℃、155 ℃、165 ℃、160 ℃, 转速为20 r/ min ; 吹膜温度分别为130 ℃、150 ℃、175 ℃、170 ℃, 转速为35r/ min。
实施例2：
一种食品保鲜膜，组分及各组分的质量分数如下：聚乙烯醇 10份，壳聚糖 8份，胶黏剂 琼脂1份，戊二醛 0.3份，乙酸0.1份，水 80份。
所述食品保鲜膜的制备方法，将乙酸溶于水中，然后加入壳聚糖，加热至80℃，搅拌至完全溶解，然后加入聚乙烯醇、胶黏剂和戊二醛搅拌得到粘稠的溶胶，倒入双螺杆挤出机中，挤出塑炼，吹膜。挤出第1～5 区的温度分别为115 ℃、135 ℃、155 ℃、175 ℃、175 ℃, 机头温度为155 ℃, 转速为20 r/ min。吹膜工艺中原材料的挤出造粒温度为135 ℃、155 ℃、165 ℃、160 ℃, 转速为20 r/ min ; 吹膜温度分别为130 ℃、150 ℃、175 ℃、170 ℃, 转速为35r/ min。
实施例3：
一种食品保鲜膜，组分及各组分的质量分数如下：聚乙烯醇 8份，壳聚糖 6份，胶黏剂 琼脂 0.8份，戊二醛 0.2份，乙酸0.08份，水  75份。
所述食品保鲜膜的制备方法，将乙酸溶于水中，然后加入壳聚糖，加热至75℃，搅拌至完全溶解，然后加入聚乙烯醇、胶黏剂和戊二醛搅拌得到粘稠的溶胶，倒入双螺杆挤出机中，挤出塑炼，吹膜。挤出第1～5 区的温度分别为115 ℃、135 ℃、155 ℃、175 ℃、175 ℃, 机头温度为155 ℃, 转速为20 r/ min。吹膜工艺中原材料的挤出造粒温度为135 ℃、155 ℃、165 ℃、160 ℃, 转速为20 r/ min ; 吹膜温度分别为130 ℃、150 ℃、175 ℃、170 ℃, 转速为35r/ min。
实施例1~3制备得到得到食品保鲜膜的性能测试，机械性能：按GB/ T 13022 - 1991 测定拉伸强度和断裂伸长率。透光率的测定: 按GB 2410 - 1980 测定。测试结果见下表
  实施例1 实施例2 实施例3
拉伸强度/MPa 28.9 29.5 33.8
断裂伸长度/% 520 510 630
透光率/% 90.4 91.3 95.0

Claims (3)

1.一种食品保鲜膜，其特征在于组分及各组分的质量分数如下：聚乙烯醇 5~10份，壳聚糖 3~8份，胶黏剂  0.5~1份，戊二醛 0.1~0.3份，乙酸0.05~0.1份，水  70~80份。
2.根据权利要求1所述的一种食品保鲜膜，其特征在于：所述胶黏剂为明胶或者琼脂。
3.权利要求1或2所述的一种食品保鲜膜的制备方法，其特征在于：将乙酸溶于水中，然后加入壳聚糖，加热至70~80℃，搅拌至完全溶解，然后加入聚乙烯醇、胶黏剂和戊二醛搅拌得到粘稠的溶胶，倒入双螺杆挤出机中，挤出塑炼，吹膜。
CN201410024668.XA 2014-01-20 2014-01-20 一种食品保鲜膜及其制备方法 Withdrawn CN103772865A (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108342040A (zh) * 2018-01-11 2018-07-31 青岛海尔股份有限公司 一种冰箱用保鲜膜、其制备方法和保鲜盒

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002293984A (ja) * 2001-03-30 2002-10-09 Topy Ind Ltd ガスバリア性向上添加剤並びにガスバリア性フイルム
CN102504296A (zh) * 2011-09-26 2012-06-20 常州绿之源高分子材料有限公司 水溶性壳聚糖/聚乙烯醇复合薄膜的制备方法
CN102898668A (zh) * 2012-10-13 2013-01-30 华南理工大学 一种水溶性的水果蔬菜保鲜膜及其制备方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002293984A (ja) * 2001-03-30 2002-10-09 Topy Ind Ltd ガスバリア性向上添加剤並びにガスバリア性フイルム
CN102504296A (zh) * 2011-09-26 2012-06-20 常州绿之源高分子材料有限公司 水溶性壳聚糖/聚乙烯醇复合薄膜的制备方法
CN102898668A (zh) * 2012-10-13 2013-01-30 华南理工大学 一种水溶性的水果蔬菜保鲜膜及其制备方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108342040A (zh) * 2018-01-11 2018-07-31 青岛海尔股份有限公司 一种冰箱用保鲜膜、其制备方法和保鲜盒
CN108342040B (zh) * 2018-01-11 2020-12-25 青岛海尔股份有限公司 一种冰箱用保鲜膜、其制备方法和保鲜盒

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Application publication date: 20140507