CN103534091A - 生物降解性薄片 - Google Patents

生物降解性薄片 Download PDF

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Publication number
CN103534091A
CN103534091A CN201280022852.XA CN201280022852A CN103534091A CN 103534091 A CN103534091 A CN 103534091A CN 201280022852 A CN201280022852 A CN 201280022852A CN 103534091 A CN103534091 A CN 103534091A
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Prior art keywords
resin
mentioned
biological degradability
degradability thin
polylactic
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CN201280022852.XA
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CN103534091B (zh
Inventor
郑根洙
南允祐
李是荣
李愍
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LG Corp
LX Hausys Ltd
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LG Chemical Co Ltd
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Abstract

本发明涉及薄片，详细而言，涉及生物降解性薄片，其包括：基材层，树脂层，形成于上述基材层的上部，以及印刷层，形成于上述树脂层的上部；上述树脂层包含聚乳酸树脂。

Description

生物降解性薄片
技术领域
本发明涉及薄片，详细而言，涉及生物降解性薄片，其包括：基材层，树脂层，形成于上述基材层的上部，以及印刷层，形成于上述树脂层的上部；上述树脂层包含聚乳酸树脂。
背景技术
利用聚氯乙烯（PVC）等的石油类树脂的薄片广为用于住宅、大厦、公寓、办公室或店铺等建筑物。
如上所述的薄片使用聚氯乙烯等的树脂通过T型模（T—die）挤压或压延方式等制成。但由于该原料全部来自作为有限的资源的原油等，因而预计随着石油资源的枯竭等，往后将产生原材料供需困难等问题。
并且，考虑到最近逐渐提高的对于环境问题的关注，聚氯乙烯类薄片存在容易排出有害物质，且废弃时对环境造成负担的问题。
发明内容
技术问题
本发明的目的在于，提供可通过使用聚乳酸树脂来解决构成薄片的各层的原料物质的供需问题，且环保的薄片。
问题解决手段
用于达成上述目的的本发明的一实施例的生物降解性薄片，其特征在于，包括：基材层，树脂层，形成于上述基材层的上部，以及印刷层，形成于上述树脂层的上部；上述树脂层包含聚乳酸树脂。
并且，用于达成上述目的的本发明的再一实施例的生物降解性薄片，其特征在于，包括：基材层，树脂层，形成于上述基材层的上部，印刷层，形成于上述树脂层的上部，以及表面处理层，形成于上述印刷层的上部；上述树脂层包含聚乳酸树脂。
并且，用于达成上述目的的本发明的另一实施例的生物降解性薄片，其特征在于，包括：第一基材层，树脂层，形成于上述第一基材层的上部，印刷层，形成于上述树脂层的上部，粘结剂层，形成于上述第一基材层的下部，以及第二基材层，形成于上述粘结剂层的下部；上述树脂层及粘结剂层中的一种以上包含聚乳酸树脂。
并且，用于达成上述目的的本发明的还一实施例的生物降解性薄片，其特征在于，包括：第一基材层，树脂层，形成于上述第一基材层的上部，印刷层，形成于上述树脂层的上部，粘结剂层，形成于上述第一基材层的下部，第二基材层，形成于上述粘结剂层的下部，以及部分发泡层，形成于上述印刷层的上部；上述树脂层、粘结剂层及部分发泡层中的一种以上包含聚乳酸树脂。
发明的效果
本发明的生物降解性薄片可使用以植物资源为基础的聚乳酸树脂，来代替通常使用的聚氯乙烯，从而解决石油资源枯竭而导致的原材料供需问题。
并且，本发明的生物降解性薄片在制备时CO2等环境有害物质的排出少，并且容易废弃。
并且，本发明的生物降解性薄片可用于建筑物的壁纸、建筑内饰材料、各种电子产品及家具等外皮材料等多种方面。
附图说明
图1至图6是表示本发明的生物降解性薄片的多个实施例的剖视图。
具体实施方式
以下参照附图详细说明的实施例会让本发明的优点和特征以及实现这些优点和特征的方法更加明确。但是，本发明不局限于以下所公开的实施例，能够以互不相同的各种方式实施，本实施例只用于使本发明的公开内容更加完整，有助于本发明所属技术领域的普通技术人员完整地理解本发明的范畴，本发明仅由发明要求保护范围定义。在说明书全文中，相同的附图标记表示相同的结构要素。
以下，将参照附图，对本发明的优选实施例的生物降解性薄片进行详细的说明。
图1至图3是表示本发明的一实施例的生物降解性薄片的剖视图。
首先，如图1所示，本发明的生物降解性薄片自下而上包括基材层110、树脂层120及印刷层130。此时，上述树脂层120包含聚乳酸树脂。
聚乳酸树脂作为丙交酯或乳酸的热塑性聚酯，例如，可通过玉米、土豆等提取的淀粉发酵而制成的乳酸进行聚合来进行制备。上述玉米、土豆等为可不断再生的植物资源，因而可从这些当中确保的聚乳酸树脂可有效应对由石油资源枯竭引起的问题。
并且，聚乳酸树脂具有在使用或废弃的过程中CO2等环境有害物质的排出量明显少于聚氯乙烯等以石油为基础的材料，且在废弃时也可在自然环境下容易分解的环保特性。
聚乳酸树脂可区分为结晶质聚乳酸（c—PLA）树脂和非晶质聚乳酸（a—PLA）树脂。此时，在结晶质聚乳酸树脂的情况下，有可能产生增塑剂向薄片的表面渗出（bleeding）现象，因而优选地，利用非晶质聚乳酸树脂。在利用非晶质聚乳酸树脂的情况下，具有无需添加为了防止渗出现象而必须添加的相容剂的优点。在利用非晶质聚乳酸树脂的情况下，最优选地，聚乳酸树脂利用100％的非晶质聚乳酸树脂，根据需要可利用结晶质和非晶质共存的聚乳酸树脂。
本发明中使用的术语“聚乳酸树脂”是指溶胶形态、混合有生物树脂的形态及混合有合成树脂的形态中的某一种以上。
首先，本发明的生物降解性薄片可使用溶胶形态的聚乳酸树脂，溶胶形态的聚乳酸树脂可以将增塑剂添加于在挥发性溶剂添加聚乳酸树脂而制成的聚乳酸溶液，再通过干燥过程去除挥发性溶剂而制成，或者也可以在颗粒或粉末形态的聚乳酸树脂添加增塑剂而制成。
并且，本发明的生物降解性薄片可利用混合有聚乳酸树脂和生物树脂的树脂，在这里，只要具有生物降解性，上述生物树脂就不受限制，但尤其为选自纤维素（Cellulose）、几丁质（Chitin）、淀粉（Starch）、聚羟基链烷酸酯（PHA，Poly Hydroxyl Alkanoate）、聚羟基丁酸戊酯（PHBV，Poly Hydroxy ButyrateValerate）、聚乙烯醇（PVA，Poly Vinyl Alcohol）、聚乙醇酸（PGA，Poly GlycolicAcid）、聚丁二酸丁二醇酯（PBS，Poly Butylene Succinate）、聚对苯二甲酸丁二醇己二酸丁二酸共聚物（PBSA，Poly Butyleneadipate—co—Butylene Succinate）、聚己二酸丁二醇酯二醇（PBAT，Poly Butylene Adipate Terephthalate）、聚己内酯（PCL，Poly Capro Lactone）、聚（酯—酰胺）（Poly（Ester—Amide））及聚（酯—聚氨酯）（Poly（Ester—Urethane））中的一种以上的树脂，这对于与聚乳酸树脂的相容性和生物降解性方面来说是优选的。
优选地，相对于100重量份的聚乳酸树脂，上述混合有聚乳酸树脂和生物树脂的树脂包含10～70重量份的生物树脂。在生物树脂小于10重量份的情况下，难以期待混合的效果，在生物树脂大于70重量份的情况下，与其他添加剂的相容性有可能成为问题。
并且，本发明的生物降解性薄片可利用混合有聚乳酸树脂和合成树脂的树脂，在这里，上述合成树脂为选自聚氯乙烯（PVC，polyvinyl chloride）、聚乙二醇（PEG，polyethylene glycol）、乙烯—醋酸乙烯酯（EVA，ethylene vinylacetate）、热塑性弹性体（TPE，thermo plastic elastomer）、热塑性聚氨酯（TPU，thermo plastic polyurethane）、热塑性淀粉（TPS，thermo plastic starch）、环氧化天然橡胶（ENR，epoxidized naturalrubber）、离聚物（Ionomer）、苯乙烯—丁二烯—苯乙烯（SBS，styrene butadiene styren）、丁腈橡胶（NBR，nitrilebutadienerubber）、苯乙烯—乙烯—丁烯—苯乙烯（SEBS，styrene ethylene butylenesstyrene）、丙烯酸酯（acrylate）、丙烯腈丁二烯苯乙烯（ABS，acrylonitrile butadienestyrene）、包含相容剂的改性聚烯烃（polyolefin modified with compatibilizer）、聚氨基甲酸酯（PU，polyurethane）、聚酰胺及聚酯中的一种以上的树脂，这对于与聚乳酸树脂的相容性和生物降解性方面来说是优选的。
优选地，相对于100重量份的聚乳酸树脂，上述混合有聚乳酸树脂和合成树脂的树脂包含10～70重量份的合成树脂。在合成树脂小于10重量份的情况下，难以期待混合的效果，在合成树脂大于70重量份的情况下，与其他添加剂的相容性有可能成为问题，并且难以得到所需的生物降解效果。
可在构成本发明的生物降解性薄片的聚乳酸树脂添加增塑剂及加工助剂。
优选地，上述增塑剂尤其使用非邻苯二甲酸酯类增塑剂，非邻苯二甲酸酯类增塑剂作为环保性增塑剂，通过软化聚乳酸树脂来增大热塑性，从而在高温下使成型加工变得容易。优选地，作为这种非邻苯二甲酸酯类增塑剂，使用柠檬酸、柠檬酸酯、环氧化植物油、脂肪酸酯、聚乙二醇、聚乙烯丙二醇及甘油酯。
优选地，相对于100重量份的聚乳酸树脂，以10～50重量份的比率使用上述非邻苯二甲酸酯类增塑剂。
在相对于100重量份的聚乳酸树脂，增塑剂的含量小于10重量份的情况下，聚乳酸树脂的硬度变高，使得可加工性下降，在相对于100重量份的聚乳酸树脂，增塑剂的含量大于50重量份的情况下，与其他成分的相容性下降，使得物理性质劣化。
上述加工助剂起到加强熔融强度的作用，由于聚乳酸树脂本身的熔融强度或耐热性差，因而优选地，添加加工助剂。
优选地，作为这种加工助剂，使用丙烯酸类共聚物、环氧类共聚物、聚氨酯类共聚物及聚烯烃类共聚物。由此，补充聚乳酸树脂的熔融强度，来容易地进行压延加工等。
优选地，相对于100重量份的聚乳酸树脂，以1～10重量份的比率使用上述加工助剂。
在相对于100重量份的聚乳酸树脂，加工助剂的含量小于1重量份的情况下，聚乳酸树脂的熔融效率及熔融强度改善效率的提高就会不充分，在相对于100重量份的聚乳酸树脂，加工助剂的含量大于10重量份的情况下，制备费用上升，并且由于与构成薄片的各层的其他物质的相容性问题等使各层的整体物理性质下降。
在本发明中，还可以在构成生物降解性薄片的聚乳酸树脂添加填充剂、润滑剂及添加剂等中的一种以上。
添加上述填充剂通常是为了，改变聚乳酸树脂组合物的物理性质和减少成本，其种类不受限制，但优选地，使用通常所使用的碳酸钙（CaCO3）。
优选地，相对于100重量份的聚乳酸树脂，以50～150重量份的比率使用上述填充剂。
在相对于100重量份的聚乳酸树脂，填充剂的含量小于50重量份的情况下，不产生减少成本的效果，在相对于100重量份的聚乳酸树脂，填充剂的含量大于150重量份的情况下，也有可能引起物理性质的变化。
添加上述润滑剂是为了，在聚乳酸树脂的压延等加工过程中防止树脂附着于压延辊或压力机。
作为这种润滑剂，使用硬脂酸、蜡、烃及硅酮等并不受限制，但在本发明中，尤其优选地，使用环保的高级脂肪酸，作为该例，可提出作为碳数为18的饱和高级脂肪酸的硬脂酸。
优选地，相对于100重量份的聚乳酸树脂，以0.1～8重量份的比率使用上述润滑剂。
在相对于100重量份的聚乳酸树脂，润滑剂的含量小于0.1重量份的情况下，得不到使用润滑剂所带来的效果，在相对于100重量份的聚乳酸树脂，润滑剂的含量大于8重量份的情况下，有可能使聚乳酸树脂的耐冲击性、耐热性及光泽度等劣化。
作为上述添加剂，可包含交联剂及抗氧化剂等。
上述交联剂起到使通过链延伸的分子量增加，来提高拉伸强度及耐热性等的作用。
作为这种交联剂，可利用二异氰酸酯、环氧基共聚物及羟基羧酸化合物等，但并不限定于此。
上述抗氧化剂起到防止聚乳酸树脂被氧化而使耐冲击性等机械物理性质下降的作用。
作为这种抗氧化剂，可使用作为塑料用抗氧化剂的苯酚类、硫磺类及磷类抗氧化剂等，但并不受限于此。
作为抗氧化剂，利用无毒性、在加工成型温度下具有稳定性、不妨碍活性及其以外的树脂加工性、且对树脂的融和性高的。
优选地，相对于100重量份的聚乳酸树脂，以0.2～5重量份的比率使用上述交联剂及抗氧化剂等添加剂。
在相对于100重量份的聚乳酸树脂，添加剂的含量小于0.2重量份的情况下，得不到使用添加剂所带来的效果，在相对于100重量份的聚乳酸树脂，添加剂的含量大于5重量份的情况下，聚乳酸树脂的成型加工性有可能下降，制备费用将上升。
以下，分别对图1至图3所示的基材层110、树脂层120、印刷层130、数字印刷层131及转移印刷层132进行说明。
在本发明中，基材层110作为薄片的最基本的层，支撑上部的树脂层120及印刷层130。
上述基材层110可无限制地使用本发明所属技术领域中所公知的普通的基材，例如，可举道林纸、无纺布及棉织物等，但并不限定于此。
像道林纸，由浆料构成，像无纺布，具有浆料和聚酯的复合结构。
优选地，构成基材层的道林纸、无纺布及棉织物等的克重为80～200g/m2。在基材层的克重小于80g/m2的情况下，具有在施工或使用过程中有可能产生薄片的撕裂等损坏的担忧，在基材层的克重大于200g/m2的情况下，基材过重，并产生裂缝及卷曲现象，致使难以施工。
在本发明中，形成于基材层110的上部的树脂层120赋予薄片的美观效果，通过包含生物降解性聚乳酸树脂，来具有环保性。
上述树脂层120可利用包含上述增塑剂及加工助剂的聚乳酸树脂，还可以在聚乳酸树脂添加一种或两种以上的填充剂、润滑剂及添加剂等。各组成比如上所述。
这种树脂层120可通过公知的压延方式或T型模挤压方式形成，但并不限定于上述方式。
在本发明中，形成于树脂层120的上部的印刷层130可向薄片赋予多种图案和/或颜色，来进一步改善美观效果。此时，形成印刷层的方法并不受特别的限制，例如，可使用凹版印刷、转移印刷、数码印刷或轮转移刷等公知的印刷方法来形成。
如图2及图3所示，本发明的上述印刷层130可包括数字印刷层131及转移印刷层132，也可以使用喷墨印刷等公知的数字印刷方法或转移方式，来更加实际、简便地赋予美观效果。
图4是本发明的再一实施例的生物降解性薄片的剖视图。
如图4所示，本发明的生物降解性薄片还可以包括基材层110、树脂层120及形成于印刷层130的上部的表面处理层140。
本发明的表面处理层140形成于印刷层130的上部，以提高薄片的耐久性，并起到保护形成于印刷层130的上部面的图案等作用。
本发明的表面处理层140可利用丙烯酸树脂及聚氨酯树脂等透明性质的树脂来形成。
图5及图6是本发明的另一实施例的生物降解性薄片的剖视图。
如图5及图6所示，本发明的生物降解性薄片可包括第一基材层111及第二基材层112，上述第一基材层111与第二基材层112中间具有粘结剂层140。
在上述说明基材层110的部分中，已充分说明了第一基材层111和第二基材层112，因此在这里省略其内容。
上述粘结剂层140的特征在于，起到使第一基材层111及第二基材层112具有层叠结构的作用，并包含聚乳酸树脂，以赋予生物降解性。
优选地，上述粘结剂层140包含10～40重量％的聚乳酸树脂及60～90重量％的溶剂，上述溶剂优选为甲基乙基甲酮（MEK，methyl ethyl ketone）、甲基异丁基甲酮（MIBK，methyl isobutyl ketone）、丙酮（acetone）及乙醇（ethylalcohol）中的某一种以上。
如图6所示，本发明的生物降解性薄片还可以在图5的印刷层130的上部包括部分发泡层150。
上述部分发泡层150的特征在于，形成于印刷层130的上部，起到向薄片赋予立体感的作用，并包含聚乳酸树脂，以赋予生物降解性。
上述部分发泡层150可使用轮转移刷等印刷方式，来以所需的图案印刷发泡树脂，并经过公知的发泡及凝胶工序等来形成。若完成工序，则只在进行印刷的图案部分发泡，因而可定义为部分发泡层150。
由于上述部分发泡层150包含聚乳酸树脂，因而如上所述，可以包含增塑剂及加工助剂，还可以添加一种或两种以上的填充剂、润滑剂、添加剂及发泡剂等。除了发泡剂之外，各组成比如上所述。
优选地，相对于100重量份的聚乳酸树脂，包含0.5～2重量份的发泡剂。
发泡剂的种类可根据所需的图案或气泡形成程度适当地进行选择并使用，不受特别的限制，但尤其优选为执行发热反应的热分解型发泡剂。
优选地，作为具体的种类，选择偶氮二甲酰胺、羧基偶氮二酰胺、苯磺酰肼、二亚硝基五亚甲基四胺、甲苯磺酰肼、偶氮二异丁腈、偶氮二羧酸钡及碳酸氢钠中的一种以上。
优选地，相对于100重量份的聚乳酸树脂，以0.5～5重量份的比率使用上述发泡剂。
在相对于100重量份的聚乳酸树脂，发泡剂的含量小于0.5重量份的情况下，发泡性下降，在相对于100重量份的聚乳酸树脂，发泡剂的含量大于5重量份的情况下，具有发泡层的强度及耐热性下降的倾向。
当发泡剂的粒径变小时，发泡剂的热分解速度变快，使得气泡变大，当发泡剂的粒径变大时，发泡剂的热分解速度变慢，使得气泡变小，因此优选地，发泡剂的平均粒径为3～30μm，更优选为5～28μm，从而得到气泡直径均匀的发泡树脂层。
根据实施例及比较例的薄片的制备
以下，提出根据本发明的优选实施例的薄片的制备例及根据比较例的制备例。但是，这仅仅是作为本发明的优选例示而提出的，从任何意义上都不能解释为本发明受限于此。
有关未在此记载的内容，该技术领域的熟练技术人员能够充分且技术性地进行类推，因而省略其说明。
实施例
各层的制备方法
1.基材层
准备由70％的浆料和30％的聚酯而成的无纺布来形成基材层。
2.树脂层的形成
相对于100重量份的聚乳酸树脂，混合50重量份的柠檬酸、150重量份的碳酸钙、10重量份的丙烯酸类共聚物、8重量份的硬脂酸及5重量份的交联剂，并在90℃至200℃的条件下用混炼机进行混炼后，通过压延或挤压方式，来制备了厚度大约为0.01mm的薄片。
3.粘结剂层的形成
分别以40重量％和60重量％的比率在80℃的条件下混合聚乳酸树脂与甲基乙基甲酮，来制备了粘结层用聚乳酸树脂糊剂。
4.印刷层的形成
按印刷次数混合水性油墨颜料与油性油墨颜料，并使用凹版印刷方式在树脂层的上部形成了印刷图案。
5.部分发泡层的形成
相对于100重量份的聚乳酸树脂，混合50重量份的柠檬酸、150重量份的碳酸钙、10重量份的丙烯酸类共聚物、8重量份的硬脂酸、5重量份的交联剂及2重量份的偶氮甲酰胺来制成糊剂，并通过旋转筛辊在印刷层的上部部分涂敷上述糊剂之后，在烘箱进行干燥，使得相当于印刷图案的部分发泡，从而形成了部分发泡层。
6.表面处理层的形成
分别以20重量％和80重量％混合丙烯酸树脂与甲基乙基甲酮，来制备了表面处理用涂敷溶液。
实施例1～实施例10
层结构如下表1所示，从左侧依次进行层叠，来制备了实施例1至实施例10的生物降解性薄片。
另一方面，使用与生物树脂或合成树脂进行混合的聚乳酸树脂的实施例如下表1所示，表1中也示出了组成比。
如下表1所示，层结构采用上述第二基材层、粘结剂层、第一基材层、树脂层、印刷层、部分发泡层及表面处理层并依次进行层叠，来制备了实施例1至实施例10的生物降解性薄片。
另一方面，使用与生物树脂或合成树脂进行混合的聚乳酸树脂的实施例如下表1所示，表1中也示出了组成比。
即，实施例2的其他条件与实施例1相同，但树脂层使用了相对于100重量份的聚乳酸树脂混合30重量份的聚丁二酸丁二醇酯的聚乳酸树脂。
实施例3的其他条件与实施例1相同，但树脂层使用了相对于100重量份的聚乳酸树脂混合30重量份的聚氯乙烯树脂的聚乳酸树脂。
实施例6的其他条件与实施例5相同，但树脂层使用了相对于100重量份的聚乳酸树脂混合30重量份的聚丁二酸丁二醇酯的聚乳酸树脂。
实施例7的其他条件与实施例5相同，但树脂层使用了相对于100重量份的聚乳酸树脂混合30重量份的聚氯乙烯树脂的聚乳酸树脂。
实施例9的其他条件与实施例8相同，但部分发泡层使用了相对于100重量份的聚乳酸树脂混合30重量份的聚丁二酸丁二醇酯的聚乳酸树脂。
实施例10的其他条件与实施例8相同，但部分发泡层使用了相对于100重量份的聚乳酸树脂混合30重量份的聚氯乙烯树脂的聚乳酸树脂。
表1
Figure BDA0000412081630000121
比较例
准备100％为浆料的原纸来形成基材层，并在上述基材层的上部涂敷包含聚氯乙烯树脂的糊剂并进行干燥，来制备了市场上销售的聚氯乙烯丝片。
评价
按照下表2的项目，对上述实施例1～实施例10及比较例进行了评价和对比。
表2
Figure BDA0000412081630000131
尺寸稳定性作为将试片浸渍于水槽后测定的长度与放置于80℃的烘箱后测定的长度之差的收缩率，其基准为，若小于2.0％，则评价为为良好（○）、若2.0～2.2％，则评价为一般（△）、若为2.2％以上，则评价为不良（×）。
透湿度作为湿气在产品上流动的量，若175g/m2·24hr以上，则评价为良好（○）、若小于175g/m2·24hr，则评价为不良（×）。
日光坚牢度以KS M7305为基准，若4以上，则评价为良好（○）、若小于4，则评价为不良（×）。
环保性是指总挥发性有机化合物（TVOC）和甲醛（HCHO）排放量程度，若总挥发性有机化合物小于0.1mg/m2·h且甲醛小于0.015mg/m2·h，则评价为良好（○），若总挥发性有机化合物为0.09～0.12mg/m2·h或甲醛为0.013～0.017mg/m2·h，则评价为一般（△），若总挥发性有机化合物为0.1mg/m2·h以上且甲醛为0.015mg/m2·h以上，则评价为不良（×）。
从上述评价结果来看，可知本发明的生物降解性薄片的尺寸稳定性、透湿度及日光坚牢度非常优秀，达到了能够代替现有的聚氯乙烯片的程度，总挥发性有机化合物的量也与聚氯乙烯相比明显减少，因而环保性出色。
以上，参照附图对本发明的实施例进行了说明，但本发明并不限定于上述多个实施例，而能够以互不相同的多种形态来制备，本发明所属技术领域的普通技术人员应能够理解，不改变本发明的技术思想或必要特征，以其他具体形态实施。因此，如上所述的多个实施例在所有方面都是例示性的，不应理解为限定性的。

Claims (30)

1.一种生物降解性薄片，其特征在于，包括：
基材层，
树脂层，形成于上述基材层的上部，以及
印刷层，形成于上述树脂层的上部；
上述树脂层包含聚乳酸树脂。
2.一种生物降解性薄片，其特征在于，包括：
基材层，
树脂层，形成于上述基材层的上部，
印刷层，形成于上述树脂层的上部，以及
表面处理层，形成于上述印刷层的上部；
上述树脂层包含聚乳酸树脂。
3.根据权利要求1或2所述的生物降解性薄片，其特征在于，上述聚乳酸树脂处于溶胶形态。
4.根据权利要求1或2所述的生物降解性薄片，其特征在于，上述树脂层包含混合有聚乳酸树脂及生物树脂的树脂。
5.根据权利要求4所述的生物降解性薄片，其特征在于，上述生物树脂为选自纤维素、几丁质、淀粉、聚羟基链烷酸酯、聚羟基丁酸戊酯、聚乙烯醇、聚乙醇酸、聚丁二酸丁二醇酯、聚对苯二甲酸丁二醇己二酸丁二酸共聚物、聚己二酸丁二醇酯二醇、聚己内酯、聚（酯—酰胺）及聚（酯—聚氨酯）中的一种以上的树脂。
6.根据权利要求1或2所述的生物降解性薄片，其特征在于，上述树脂层包含混合有聚乳酸树脂及合成树脂的树脂。
7.根据权利要求6所述的生物降解性薄片，其特征在于，上述合成树脂为选自聚氯乙烯、聚乙二醇、乙烯—醋酸乙烯酯、热塑性弹性体、热塑性聚氨酯、热塑性淀粉、环氧化天然橡胶、离聚物、苯乙烯—丁二烯—苯乙烯、丁腈橡胶、苯乙烯—乙烯—丁烯—苯乙烯、丙烯酸酯、丙烯腈丁二烯苯乙烯、包含相容剂的改性聚烯烃、聚氨基甲酸酯、聚酰胺及聚酯中的一种以上的树脂。
8.根据权利要求1或2所述的生物降解性薄片，其特征在于，上述树脂层还包含增塑剂及加工助剂中的一种以上。
9.根据权利要求1或2所述的生物降解性薄片，其特征在于，上述树脂层中，相对于100重量份的聚乳酸树脂，包含10～50重量份的增塑剂及1～10重量份的加工助剂。
10.根据权利要求8所述的生物降解性薄片，其特征在于，上述树脂层还包含填充剂、润滑剂及添加剂中的一种以上。
11.根据权利要求10所述的生物降解性薄片，其特征在于，上述树脂层中，相对于100重量份的聚乳酸树脂，包含50～150重量份的填充剂、0.1～8重量份的润滑剂及0.2～5重量份的添加剂。
12.一种生物降解性薄片，其特征在于，包括：
第一基材层，
树脂层，形成于上述第一基材层的上部，
印刷层，形成于上述树脂层的上部，
粘结剂层，形成于上述第一基材层的下部，以及
第二基材层，形成于上述粘结剂层的下部；
上述树脂层及粘结剂层中的一种以上包含聚乳酸树脂。
13.一种生物降解性薄片，其特征在于，包括：
第一基材层，
树脂层，形成于上述第一基材层的上部，
印刷层，形成于上述树脂层的上部，
粘结剂层，形成于上述第一基材层的下部，
第二基材层，形成于上述粘结剂层的下部，以及
部分发泡层，形成于上述印刷层的上部；
上述树脂层、粘结剂层及部分发泡层中的一种以上包含聚乳酸树脂。
14.根据权利要求12或13所述的生物降解性薄片，其特征在于，上述聚乳酸树脂处于溶胶形态。
15.根据权利要求12或13所述的生物降解性薄片，其特征在于，上述树脂层及粘结剂层中的一种以上包含混合有聚乳酸树脂及生物树脂的树脂。
16.根据权利要求15所述的生物降解性薄片，其特征在于，上述生物树脂为选自纤维素、几丁质、淀粉、聚羟基链烷酸酯、聚羟基丁酸戊酯、聚乙烯醇、聚乙醇酸、聚丁二酸丁二醇酯、聚对苯二甲酸丁二醇己二酸丁二酸共聚物、聚己二酸丁二醇酯二醇、聚己内酯、聚（酯—酰胺）及聚（酯—聚氨酯）中的一种以上的树脂。
17.根据权利要求13所述的生物降解性薄片，其特征在于，上述部分发泡层包含混合有聚乳酸树脂及生物树脂的树脂。
18.根据权利要求17所述的生物降解性薄片，其特征在于，上述生物树脂为选自纤维素、几丁质、淀粉、聚羟基链烷酸酯、聚羟基丁酸戊酯、聚乙烯醇、聚乙醇酸、聚丁二酸丁二醇酯、聚对苯二甲酸丁二醇己二酸丁二酸共聚物、聚己二酸丁二醇酯二醇、聚己内酯、聚（酯—酰胺）及聚（酯—聚氨酯）中的一种以上的树脂。
19.根据权利要求12或13所述的生物降解性薄片，其特征在于，上述树脂层及粘结剂层中的一种以上包含混合有聚乳酸树脂及合成树脂的树脂。
20.根据权利要求19所述的生物降解性薄片，其特征在于，上述合成树脂为选自聚氯乙烯、聚乙二醇、乙烯—醋酸乙烯酯、热塑性弹性体、热塑性聚氨酯、热塑性淀粉、环氧化天然橡胶、离聚物、苯乙烯—丁二烯—苯乙烯、丁腈橡胶、苯乙烯—乙烯—丁烯—苯乙烯、丙烯酸酯、丙烯腈丁二烯苯乙烯、包含相容剂的改性聚烯烃、聚氨基甲酸酯、聚酰胺及聚酯中的一种以上的树脂。
21.根据权利要求13所述的生物降解性薄片，其特征在于，上述部分发泡层包含混合有聚乳酸树脂及合成树脂的树脂。
22.根据权利要求21所述的生物降解性薄片，其特征在于，上述合成树脂为选自聚氯乙烯、聚乙二醇、乙烯—醋酸乙烯酯、热塑性弹性体、热塑性聚氨酯、热塑性淀粉、环氧化天然橡胶、离聚物、苯乙烯—丁二烯—苯乙烯、丁腈橡胶、苯乙烯—乙烯—丁烯—苯乙烯、丙烯酸酯、丙烯腈丁二烯苯乙烯、包含相容剂的改性聚烯烃、聚氨基甲酸酯、聚酰胺及聚酯中的一种以上的树脂。
23.根据权利要求13所述的生物降解性薄片，其特征在于，上述树脂层及部分发泡层中的一种以上还包含增塑剂及加工助剂中的一种以上。
24.根据权利要求13所述的生物降解性薄片，其特征在于，上述树脂层及部分发泡层中的一种以上中，相对于100重量份的聚乳酸树脂，包含10～50重量份的增塑剂及1～10重量份的加工助剂。
25.根据权利要求23所述的生物降解性薄片，其特征在于，上述树脂层还包含填充剂、润滑剂及添加剂中的一种以上。
26.根据权利要求25所述的生物降解性薄片，其特征在于，上述树脂层中，相对于100重量份的聚乳酸树脂，包含50～150重量份的填充剂、0.1～8重量份的润滑剂及0.2～5重量份的添加剂。
27.根据权利要求23所述的生物降解性薄片，其特征在于，上述部分发泡层还包含填充剂、润滑剂、添加剂及发泡剂中的一种以上。
28.根据权利要求27所述的生物降解性薄片，其特征在于，上述部分发泡层中，相对于100重量份的聚乳酸树脂，包含50～150重量份的填充剂、0.1～8重量份的润滑剂、0.2～5重量份的添加剂及0.5～2重量份的发泡剂。
29.根据权利要求12或13所述的生物降解性薄片，其特征在于，上述粘结剂层包含10～40重量％的聚乳酸树脂及60～90重量％的溶剂。
30.根据权利要求29所述的生物降解性薄片，其特征在于，上述溶剂为甲基乙基甲酮、甲基异丁基甲酮、丙酮及乙醇中的一种以上。
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CN103826848A (zh) * 2012-09-21 2014-05-28 乐金华奥斯有限公司 生物降解性面板
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EP2711178A2 (en) 2014-03-26
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EP2711178A4 (en) 2014-10-22
KR20120127113A (ko) 2012-11-21
CN103534091B (zh) 2016-03-16
WO2012157874A3 (ko) 2013-03-21
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US8962118B2 (en) 2015-02-24
WO2012157874A2 (ko) 2012-11-22

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