CN1104326C - 食品包装用复合材料 - Google Patents

食品包装用复合材料 Download PDF

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Publication number
CN1104326C
CN1104326C CN99125782A CN99125782A CN1104326C CN 1104326 C CN1104326 C CN 1104326C CN 99125782 A CN99125782 A CN 99125782A CN 99125782 A CN99125782 A CN 99125782A CN 1104326 C CN1104326 C CN 1104326C
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layer
composite material
package
skin
sandwich layer
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Expired - Fee Related
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CN99125782A
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CN1300702A (zh
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王彤
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ZHEJIANG BILI PACKAGING CO Ltd
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BILI PACKING MATERIAL Co Ltd PINGHU CITY
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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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/90—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in food processing or handling, e.g. food conservation
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
    • Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics

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Abstract

本发明公开了一种食品包装用复合材料，它包括芯层和外层，在芯层上涂布了外层，该外层为聚乳酸层或聚乳酸共聚物层；芯层为双层结构，该双层结构可以是由纸层和塑料层组成、也可以是由纸层和铝箔层组成、或者是由铝箔层和塑料层组成。本发明适合用于制作液体食品包装袋。

Description

食品包装用复合材料
                    技术领域
本发明属于食品包装领域，涉及一种食品包装用复合材料。
                    背景技术
在1991年公开的中国专利1055506A(申请号为90105802.5)介绍了一种三层塑料复合薄膜。但用这种复合薄膜较难制作有一定折叠形状的液体食品包装容器，而且，这种复合薄膜在自然条件下不易降解，不利于环境保护。
                    发明内容
本发明的目的是针对上述不足，研制出一种食品包装用复合材料。
本发明的实施方案是：一种食品包装用复合材料，包括芯层和外层，在芯层上涂布了外层，该外层为聚乳酸层或聚乳酸共聚物层；芯层为双层结构，该双层结构可以是由纸层和塑料层组成、也可以是由纸层和铝箔层组成、或者是由铝箔层和塑料层组成。
本发明的优点：所述的食品包装用复合材料可以根据液体食品的包装需要，折叠成相应的包装形状；该食品包装用复合材料的外层为聚乳酸层或聚乳酸共聚物层，故较易在自然条件下降解。
                       附图说明
图1是本发明的结构示意图。
                     具体实施方式
下面结合附图及实施例对本发明作进一步说明。
如图所示，本发明包括芯层1和二层外层2，外层为聚乳酸层或聚乳酸共聚物层，该二层外层2分别被涂布于芯层1的上侧和下侧。芯层1为双层结构，该双层结构是由纸层和塑料层组成。
纸层所用的材料主要是植物纤维或合成纤维，塑料层所用的材料主要是聚烯烃类。
芯层1的双层结构也可以是由纸层和铝箔层组成。
芯层1的双层结构也可以是由铝箔层和塑料层组成。
上述食品包装用复合材料的外层2可以为一层，该一层外层2被涂布于芯层1的一侧。
上述食品包装用复合材料的生产方法为挤出法，挤出法的生产工艺是用挤出机将聚乳酸或聚乳酸共聚物挤出到芯层1上，使聚乳酸或聚乳酸共聚物以薄层的形式被涂布到芯层1上。
上述食品包装用复合材料的生产方法也可以为涂敷法，涂敷法的生产工艺是用涂敷设备，使聚乳酸或聚乳酸共聚物以薄层的形式被涂布到芯层1上。

Claims (4)

1、一种食品包装用复合材料，包括芯层和外层，其特征在于在芯层上涂布了外层，该外层为聚乳酸层或聚乳酸共聚物层；芯层为双层结构，该双层结构可以是由纸层和塑料层组成、也可以是由纸层和铝箔层组成、或者是由铝箔层和塑料层组成。
2、根据权利要求1所述的一种食品包装用复合材料，其特征在于纸层所用的材料主要是植物纤维或合成纤维，塑料层所用的材料主要是聚烯烃类。
3、根据权利要求1所述的一种食品包装用复合材料，其特征在于外层为二层，该二层外层分别被涂布于芯层的上侧和下侧。
4、根据权利要求1所述的一种食品包装用复合材料，其特征在于外层可以为一层，该一层外层被涂布于芯层的一侧。
CN99125782A 1999-12-22 1999-12-22 食品包装用复合材料 Expired - Fee Related CN1104326C (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN99125782A CN1104326C (zh) 1999-12-22 1999-12-22 食品包装用复合材料

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN99125782A CN1104326C (zh) 1999-12-22 1999-12-22 食品包装用复合材料

Publications (2)

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CN1300702A CN1300702A (zh) 2001-06-27
CN1104326C true CN1104326C (zh) 2003-04-02

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101332691B (zh) * 2007-06-28 2012-06-20 伟盟工业股份有限公司 聚乳酸贴合板及其制造方法
CN101806014A (zh) * 2009-02-16 2010-08-18 伟盟工业股份有限公司 聚乳酸纸板及利用其制成的食品容器

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0449267A1 (en) * 1990-03-29 1991-10-02 Showa Denko Kabushiki Kaisha Highly hygroscopic laminate
EP0576993A2 (en) * 1992-06-29 1994-01-05 MITSUI TOATSU CHEMICALS, Inc. Decomposable composite material
WO1996031347A1 (en) * 1995-04-06 1996-10-10 Zeneca Limited Compostible laminate
US5679421A (en) * 1995-10-30 1997-10-21 Brinton, Jr.; William F. Biodegradable bags and processes for making such biodegradable bags
WO1998009812A1 (en) * 1996-09-04 1998-03-12 Tetra Laval Holdings & Finance S.A. A biodegradable packaging laminate, a method of producing the packaging laminate, and packaging containers produced from the packaging laminate

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0449267A1 (en) * 1990-03-29 1991-10-02 Showa Denko Kabushiki Kaisha Highly hygroscopic laminate
EP0576993A2 (en) * 1992-06-29 1994-01-05 MITSUI TOATSU CHEMICALS, Inc. Decomposable composite material
WO1996031347A1 (en) * 1995-04-06 1996-10-10 Zeneca Limited Compostible laminate
US5679421A (en) * 1995-10-30 1997-10-21 Brinton, Jr.; William F. Biodegradable bags and processes for making such biodegradable bags
WO1998009812A1 (en) * 1996-09-04 1998-03-12 Tetra Laval Holdings & Finance S.A. A biodegradable packaging laminate, a method of producing the packaging laminate, and packaging containers produced from the packaging laminate

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