CN110588115A - 耐高低温高阻隔安全封口膜 - Google Patents
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- BLDFSDCBQJUWFG-UHFFFAOYSA-N 2-(methylamino)-1,2-diphenylethanol Chemical compound C=1C=CC=CC=1C(NC)C(O)C1=CC=CC=C1 BLDFSDCBQJUWFG-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000001125 extrusion Methods 0.000 claims abstract description 16
- 229920001179 medium density polyethylene Polymers 0.000 claims abstract description 16
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- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000004698 Polyethylene Substances 0.000 claims abstract description 14
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 13
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 13
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229920001903 high density polyethylene Polymers 0.000 claims abstract description 8
- 239000004700 high-density polyethylene Substances 0.000 claims abstract description 8
- 229920001684 low density polyethylene Polymers 0.000 claims abstract description 8
- 239000004702 low-density polyethylene Substances 0.000 claims abstract description 8
- 230000004888 barrier function Effects 0.000 claims abstract description 7
- 239000000203 mixture Substances 0.000 claims abstract description 5
- 229920000092 linear low density polyethylene Polymers 0.000 claims abstract description 4
- 239000004707 linear low-density polyethylene Substances 0.000 claims abstract description 4
- 125000000383 tetramethylene group Chemical group [H]C([H])([*:1])C([H])([H])C([H])([H])C([H])([H])[*:2] 0.000 claims abstract description 4
- 239000012528 membrane Substances 0.000 claims description 16
- 238000013329 compounding Methods 0.000 claims description 7
- 238000005266 casting Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 238000007747 plating Methods 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000004033 plastic Substances 0.000 description 6
- 229920003023 plastic Polymers 0.000 description 6
- 235000021395 porridge Nutrition 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- 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
- B29D7/00—Producing flat articles, e.g. films or sheets
- B29D7/01—Films or sheets
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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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered 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
- B32B27/08—Layered 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
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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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
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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
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
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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
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
- B65D77/10—Container closures formed after filling
- B65D77/20—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers
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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
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
- B32B37/24—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer not being coherent before laminating, e.g. made up from granular material sprinkled onto a substrate
- B32B2037/243—Coating
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2255/00—Coating on the layer surface
- B32B2255/10—Coating on the layer surface on synthetic resin layer or on natural or synthetic rubber layer
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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
- B32B2255/00—Coating on the layer surface
- B32B2255/20—Inorganic coating
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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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
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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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/306—Resistant to heat
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- Engineering & Computer Science (AREA)
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Abstract
一种耐高低温高阻隔安全封口膜，其特征在于：从外到内由外膜和内膜复合而成，外膜为镀有三氧化铝层或二氧化硅层的BOPE膜，内膜为三层共挤PE层；三层共挤PE层从外到内依次包括外层、中间层、内层，外层按如下重量份组成：3份HDPE、4份高温高密度MDPE、3份LDPE组成，中间层按如下重量份组成：3份高温高密度MDPE、3份LLDPE、2份HDPE、2份LPE组成，内层按如下重量份组成：2份高温高密度MDPE、3份LLDE、3份LDPE、2份丁烯组成。本发明对照现有技术的有益效果是，由于对薄膜的组成进行了改进，外膜为镀有三氧化铝层或二氧化硅层的BOPE膜，内膜为三层共挤PE层，因此阻隔性高，而且既耐高温，又耐低温。
Description
技术领域
本发明涉及一种薄膜，更具体地说涉及一种耐高低温高阻隔安全封口膜。
背景技术
目前，食品包装的塑料杯等容器，其开口密封所采用的封口膜，通常不耐高温、低温，阻隔性较差。
如公共号为CN201452530U的中国专利文献“一种八宝粥专用塑料杯”所公开的一种塑料杯，它主要由塑料杯身、杯身上部一体成型的带沿外翻杯口及杯身下内侧的至少一个的阻隔珊构成，由于杯身下内侧有阻隔珊，杯子便不会因结合过于紧密而无法拔取；由于带沿外翻杯口可以贴敷方便封口和撕开的易拉膜，因此便提供了一种可以方便抽取及取食的八宝粥专用塑料杯。
这种塑料杯，所采用的封口膜，就是普通的封口膜，不耐高温、低温，阻隔性较差，仅能保存较短时间。
发明内容
本发明所要解决的技术问题是提供一种耐高低温高阻隔安全封口膜，这种耐高低温高阻隔安全封口膜阻隔性高，而且既耐高温，又耐低温。采用的技术方案如下：
一种耐高低温高阻隔安全封口膜，其特征在于：从外到内由外膜和内膜复合而成，外膜为镀有三氧化铝层或二氧化硅层的BOPE膜，内膜为三层共挤PE层；
三层共挤PE层从外到内依次包括外层、中间层、内层；
外层按如下重量份组成：3份HDPE、4份高温高密度MDPE、3份LDPE组成；
中间层按如下重量份组成：3份高温高密度MDPE、3份LLDPE、2份HDPE、2份LPE组成；
内层按如下重量份组成：2份高温高密度MDPE、3份LLDE、3份LDPE、2份丁烯组成。
较优的方案，所述高温高密度MDPE的密度大于或等于0.936。
上述耐高低温高阻隔安全封口膜的生产步骤如下：
a) 制备外膜：将BOPE膜内表面镀上三氧化铝层或二氧化硅层, 获得镀有三氧化铝层或二氧化硅层的BOPE膜；
b) 制备内膜：将外层的原料、中间层的原料、内层的原料分别按重量比混合均匀，然后分别送往三层共挤流延机（CPE）挤出流延膜，制得三层共挤PE层；
c)复合：将外膜与内膜送到复合机复合，使得外膜的三氧化铝层或二氧化硅层与内膜的内层复合。
本发明对照现有技术的有益效果是，由于对薄膜的组成进行了改进，外膜为镀有三氧化铝层或二氧化硅层的BOPE膜，内膜为三层共挤PE层，因此阻隔性高，而且既耐高温，又耐低温。
附图说明
图1是本发明实施例1的剖视结构示意图。
具体实施方式
实施例1
如图1所示，本实施例中的耐高低温高阻隔安全封口膜，从外到内由外膜和内膜复合而成，外膜为镀有三氧化铝层2的BOPE膜1，内膜为三层共挤PE层；
三层共挤PE层从外到内依次包括外层5、中间层4、内层3；
外层5按如下重量份组成：3份HDPE、4份高温高密度MDPE、3份LDPE组成；
中间层4按如下重量份组成：3份高温高密度MDPE、3份LLDPE、2份HDPE、2份LPE组成；
内层3按如下重量份组成：2份高温高密度MDPE、3份LLDE、3份LDPE、2份丁烯组成。
所述高温高密度MDPE的密度为0.936。
上述耐高低温高阻隔安全封口膜的生产步骤：
a)外膜，即镀有三氧化铝层2或二氧化硅层的BOPE膜1的制备：将BOPE膜1内表面镀上三氧化铝层2；
b)内膜，即三层共挤PE层的制备：将外层5的原料、中间层4的原料、内层3的原料分别按重量比混合均匀，然后分别送往三层共挤流延机（CPE）挤出流延膜，制得三层共挤PE层；
c)复合：将外膜与内膜送到复合机复合，使得外膜的三氧化铝层2与内膜的内层3复合。
经过实验，上述耐高低温高阻隔安全封口膜既能耐高温，又能耐低温。
实施例2
本实施例中的耐高低温高阻隔安全封口膜与实施例1的区别在于：
步骤a)中，将BOPE膜1内表面镀上二氧化硅层。
所述高温高密度MDPE的密度为0.938。
此外，需要说明的是，本说明书中所描述的具体实施例，其各部分名称等可以不同，凡依本发明专利构思所述的构造、特征及原理所做的等效或简单变化，均包括于本发明专利的保护范围内。本发明所属技术领域的技术人员可以对所描述的具体实施例做各种各样的修改或补充或采用类似的方式替代，只要不偏离本发明的结构或者超越本权利要求书所定义的范围，均应属于本发明的保护范围。
Claims (3)
1.一种耐高低温高阻隔安全封口膜，其特征在于：从外到内由外膜和内膜复合而成，外膜为镀有三氧化铝层或二氧化硅层的BOPE膜，内膜为三层共挤PE层；
三层共挤PE层从外到内依次包括外层、中间层、内层；
外层按如下重量份组成：3份HDPE、4份高温高密度MDPE、3份LDPE组成；
中间层按如下重量份组成：3份高温高密度MDPE、3份LLDPE、2份HDPE、2份LPE组成；
内层按如下重量份组成：2份高温高密度MDPE、3份LLDE、3份LDPE、2份丁烯组成。
2.如权利要求1所述的耐高低温高阻隔安全封口膜，其特征在于：所述高温高密度MDPE的密度大于或等于0.936。
3.如权利要求1或2所述的耐高低温高阻隔安全封口膜，其特征在于：上述耐高低温高阻隔安全封口膜的生产步骤如下：
a) 制备外膜：将BOPE膜内表面镀上三氧化铝层或二氧化硅层, 获得镀有三氧化铝层或二氧化硅层的BOPE膜；
b) 制备内膜：将外层的原料、中间层的原料、内层的原料分别按重量比混合均匀，然后分别送往三层共挤流延机挤出流延膜，制得三层共挤PE层；
c)复合：将外膜与内膜送到复合机复合，使得外膜的三氧化铝层或二氧化硅层与内膜的内层复合。
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112895647A (zh) * | 2021-02-07 | 2021-06-04 | 黄山永新股份有限公司 | 一种单向拉伸聚乙烯树脂薄膜及其制备方法 |
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| CN103231519A (zh) * | 2013-03-29 | 2013-08-07 | 宁波市江北成达色母粒有限公司 | 一种可熔型多层复合沥青灌装袋的制备方法 |
| CN104476889A (zh) * | 2015-01-16 | 2015-04-01 | 永新股份（黄山）包装有限公司 | 一种pe薄膜及其制备方法 |
| WO2017102704A1 (en) * | 2015-12-15 | 2017-06-22 | Borealis Ag | Polyethylene based laminated film structure with barrier properties |
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| CN101927590A (zh) * | 2010-02-26 | 2010-12-29 | 成都思雅科高分子材料有限公司 | 利用下吹水冷环膜法加工的多层共挤聚乙烯薄膜 |
| CN103231519A (zh) * | 2013-03-29 | 2013-08-07 | 宁波市江北成达色母粒有限公司 | 一种可熔型多层复合沥青灌装袋的制备方法 |
| CN104476889A (zh) * | 2015-01-16 | 2015-04-01 | 永新股份（黄山）包装有限公司 | 一种pe薄膜及其制备方法 |
| WO2017102704A1 (en) * | 2015-12-15 | 2017-06-22 | Borealis Ag | Polyethylene based laminated film structure with barrier properties |
Non-Patent Citations (2)
| Title |
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| 周祥兴: "《废旧塑料的再生利用工艺和配方》", 31 March 2009 * |
| 封朴: "《聚合物合金》", 31 January 1997 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112895647A (zh) * | 2021-02-07 | 2021-06-04 | 黄山永新股份有限公司 | 一种单向拉伸聚乙烯树脂薄膜及其制备方法 |
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Application publication date: 20191220 |