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CN107997519A - 一种环保薄膜吸附镂空类餐具的工艺及其制备方法 - Google Patents

一种环保薄膜吸附镂空类餐具的工艺及其制备方法 Download PDF

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CN107997519A
CN107997519A CN201610941346.0A CN201610941346A CN107997519A CN 107997519 A CN107997519 A CN 107997519A CN 201610941346 A CN201610941346 A CN 201610941346A CN 107997519 A CN107997519 A CN 107997519A
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马庆维
张海斌
崔成杰
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Heilongjiang Xinda Enterprise Group Co Ltd
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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
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • B32B37/1284—Application of adhesive
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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    • C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
    • C08L67/04—Polyesters derived from hydroxycarboxylic acids, e.g. lactones
    • 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
    • B32B2255/10—Coating on the layer surface on synthetic resin layer or on natural or synthetic rubber layer
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Abstract

本发明涉及一种环保薄膜吸附镂空类餐具的工艺及其制备方法，其特征是环保薄膜通过静电吸附的作用完全吸附于餐具上，既避免了餐具在使用中的存在的细菌污染食物的问题，又解决了餐具使用后的清洁问题，其中，环保薄膜为PLA/PBAT混合材料制得，环保薄膜中PLA含量为60%，PBAT含量为40%，薄膜厚度为0.015mm，其具有良好的生物相容性，在自然条件下可堆肥降解，保证了在薄膜废弃后不会对环境造成污染；镂空类餐具指镂空陶瓷餐具、镂空金属制餐具、镂空美耐皿餐具、镂空PLA注塑餐具等，由于餐具为镂空餐具，节约材料，达到餐具材料的最大利用率。应用常规设备，工艺简单，操作容易，便于产业化推广应用。

Description

一种环保薄膜吸附镂空类餐具的工艺及其制备方法
技术领域
本发明属于环保薄膜应用领域，具体涉及到环保薄膜生产方法以及加大静电吸附力的方法。
背景技术
环保薄膜是一种可生物降解的PLA/PBAT改性材料。PLA主要是以玉米、小麦、甜菜等含淀粉的农产品为原料，经发酵生成乳酸后，聚合而成，其在堆肥下可降解；PBAT来源于石油，但其具有良好的生物相容性，在堆肥下可降解。再经缩聚和熔融纺丝制成。面临日益严重的白色污染问题，我国己经开始采取措施来防治“白色污染”。2007年12月31日颁布了“限塑令”，仅仅从大型超级市场执行方面来看其情况还是比较理想，塑料购物袋的使用大幅减少。但是其还有很大的局限性，没有从本质上解决“白色污染”问题。在服装、食品包装、保鲜、一次性用品等众多领域，塑料薄膜的使用仍然触目惊心。
另一方面，塑料是由石油提炼出来，而石油是人类宝贵的自然资源，是不可再生资源。目前大部分塑料是石油为原料，而石油资源总量有限，所为了子孙后代的长远发展，寻找能够取代镂空类塑料的生物降解塑料是大势所趋。
生物降解塑料的发展是治理和解决白色污染的重要途径，生物降解材料能在短时间内被自然界中的微生物分解为CO2和战H2O，不会产生污染。而且，生物降解材料原料来源于可再生资源，如玉米、大豆等，有利于人类摆脱对石油资源的依赖。而在前生产及应用的生物降解材料中，聚乳酸是实验室研巧和工业化生产应用最广泛的材料，聚乳酸原料来源的广泛性及生物可降解性使得对聚乳酸的研究显得尤为重要。
发明内容
本发明的目的是应用一种完全可降解的环保薄膜吸附镂空类餐具，环保薄膜是PLA、PBAT通过共混改性制得，又由PLA/PBAT改性料通过单螺杆吹膜机使用向上吹膜法制得。其中环保薄膜中PLA含量为60%，PBAT含量为40%，薄膜厚度为0.015mm。通过加热、加压使得环保薄膜完全贴合镂空类餐具，使其间无气体残留，增大其静电力作用，从而完成环保薄膜吸附镂空类餐具；或通过在环保薄膜表面涂覆一种膏状物质使得环保薄膜完全贴合镂空类餐具，使其间无气体残留，增大其静电力作用，从而完成环保薄膜吸附镂空类餐具。
本发明的目的是这样实现的：
1、制造环保薄膜改性料：按所述环保薄膜改性料的配方把PLA与PBAT混合后，在160-180℃温度下，经双螺杆挤出获得所述环保薄膜改性料。
2、制造环保薄膜：将上述1步所得环保薄膜改性料，通过单螺杆吹膜机使用向上吹膜法制得环保薄膜。
本发明的涉及的环保薄膜吸附时采用真空加压、加热，是由真空异型热压机真空加压、加热实现；本发明涉及的环保薄膜吸附时涂覆的膏状物质，采用硅胶材料。
本发明进步效果，常规设备，工艺简单，操作容易，便于工业化推广应用。
具体实施方式
以下给出本发明的2个具体实施例子：
实施例1：
按PLA为60%，PBAT为40%的含量混合得到PLA/PBAT改性混合料，在160-180℃温度下，经双螺杆挤出获得所述环保薄膜改性料。将得到的改性料通过单螺杆吹膜机使用向上吹膜法制得。将得到的PLA/PBAT改性薄膜采用真空异型热压机真空加压、加热覆于餐具表面，使得环保薄膜完全贴合镂空类餐具，使其间无气体残留，增大其静电力作用，从而完成环保薄膜吸附镂空类餐具。
实施例2：
按PLA为60%，PBAT为40%的含量混合得到PLA/PBAT改性混合料，在160-180℃温度下，经双螺杆挤出获得所述环保薄膜改性料。将得到的改性料通过单螺杆吹膜机使用向上吹膜法制得。将得到的PLA/PBAT改性薄膜涂覆硅胶后，覆于餐具表面，使得环保薄膜完全贴合镂空类餐具，使其间无气体残留，增大其静电力作用，从而完成环保薄膜吸附镂空类餐具。
实施例3：
按PLA为60%，PBAT为40%的含量混合得到PLA/PBAT改性混合料，在160-180℃温度下，经双螺杆挤出获得所述环保薄膜改性料。将得到的改性料通过单螺杆吹膜机使用向上吹膜法制得。将得到的PLA/PBAT改性薄膜涂覆硅胶后，覆于餐具表面，采用真空异型热压机真空加压、加热的方法，使得环保薄膜完全贴合镂空类餐具，使其间无气体残留，增大其静电力作用，从而完成环保薄膜吸附镂空类餐具。

Claims (8)

1.一种环保薄膜吸附镂空类餐具的工艺及其制备方法，其特征工作流程如下：通过加热、加压使得环保薄膜完全贴合镂空类餐具，使其间无气体残留，增大其静电力作用，从而完成环保薄膜吸附镂空类餐具；或通过在环保薄膜表面涂覆一种膏状物质使得环保薄膜完全贴合镂空类餐具，使其间无气体残留，增大其静电力作用，从而完成环保薄膜吸附镂空类餐具。
2.根据权利要求1中所述的一种环保薄膜材料为PLA、PBAT通过共混改性制得，又由PLA/PBAT改性料通过单螺杆吹膜机使用向上吹膜法制得，其中环保薄膜中PLA含量为60%，PBAT含量为40%，薄膜厚度为0.015mm。
3.根据权利要求1或2中所述一种环保薄膜吸附镂空类餐具的工艺及其制备方法，其特征在于有效避免了餐具在使用中的存在的细菌污染食物的问题。
4.根据权利要求1或2中所述一种环保薄膜吸附镂空类餐具的工艺及其制备方法，其特征在于有效解决了餐具使用后的清洁问题。
5.根据权利要求1或2中所述一种环保薄膜吸附镂空类餐具的工艺及其制备方法，其特征在于薄膜废弃后可完全降解，避免环境污染。
6.根据权利要求1中所述真空加压、加热使得环保薄膜完全贴合镂空类餐具，其中真空加压、加热步骤使用真空异型热压机完成。
7.根据权利要求1中所述环保薄膜表面涂覆一种膏状物质，其中膏状物质为硅胶。
8.根据权利要求1中所述镂空餐具为盘体镂空带孔，节约成本，降低餐具成本。
CN201610941346.0A 2016-11-02 2016-11-02 一种环保薄膜吸附镂空类餐具的工艺及其制备方法 Pending CN107997519A (zh)

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CN108219402A (zh) * 2016-12-14 2018-06-29 黑龙江鑫达企业集团有限公司 一种易剥离环保薄膜吸附镂空类餐具的工艺及其制备方法

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CN101301158A (zh) * 2007-05-08 2008-11-12 周巽 一种免清洗容器类餐具的使用、结构与制造
CN101239520A (zh) * 2007-11-28 2008-08-13 杨恒强 环保纸浆模塑餐具的覆膜技术
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108219402A (zh) * 2016-12-14 2018-06-29 黑龙江鑫达企业集团有限公司 一种易剥离环保薄膜吸附镂空类餐具的工艺及其制备方法

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