WO2010105500A1 - Polylactic acid foam composition - Google Patents
Polylactic acid foam composition Download PDFInfo
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- WO2010105500A1 WO2010105500A1 PCT/CN2010/000310 CN2010000310W WO2010105500A1 WO 2010105500 A1 WO2010105500 A1 WO 2010105500A1 CN 2010000310 W CN2010000310 W CN 2010000310W WO 2010105500 A1 WO2010105500 A1 WO 2010105500A1
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- Prior art keywords
- polylactic acid
- foaming composition
- emulsifier
- foaming
- foam
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2367/04—Polyesters derived from hydroxy carboxylic acids, e.g. lactones
Definitions
- the present invention relates to a foaming composition, and in particular to a foaming composition containing polylactic acid. Background technique
- food containers generally used for holding hot foods must have good anti-leakage and heat-insulating properties to prevent user injury, and also need to have a heat-insulating function to slow the heat exchange between the contents and the outside temperature. It turns cold and enhances the taste of the contents.
- styrofoam is foamed from polystyrene or polyvinyl chloride, and its foamed volume can be expanded to three to sixty times the raw material, which is not only lightweight but also inexpensive.
- polystyrene and polyvinyl chloride are not degradable by themselves and burned after being discarded, a large amount of toxic gas is generated, which is extremely harmful to the natural ecological environment. Summary of the invention
- an aspect of the present invention is to provide a polylactic acid foaming composition for producing a foam having heat insulating and heat insulating effects. Moreover, the foam produced is completely biodegradable, reducing environmental pollution.
- a polylactic acid foaming composition comprising at least polylactic acid, an emulsifier, a foaming powder and a solvent.
- Emulsifiers help to increase the hydrophilicity of polylactic acid.
- the weight percentage of the polylactic acid is 15% to 55%
- the weight percentage of the emulsifier is 2% to 14%
- the weight percentage of the foaming agent is 1% to 18%
- the solvent is the balance.
- Another aspect of the present invention is to provide a polylactic acid foamed paper which is itself biodegradable and can be naturally degraded in the environment without treatment.
- a polylactic acid foamed paper material comprising at least a paper layer and a polylactic acid foam.
- the polylactic acid foam is on the paper layer, and the polylactic acid foam contains a polylactic acid foaming composition.
- the polylactic acid foaming composition comprises polylactic acid, an emulsifier, a foaming powder and a solvent.
- the emulsifier is used to help increase the hydrophilic value of the polylactic acid, and the weight percentage of the polylactic acid is 15% to 55%, the weight percentage of the emulsifier is 2% to 14%, and the weight percentage of the foaming powder is 1% to 18%.
- the solvent is the balance.
- a food container comprising at least the aforementioned polylactic acid foamed paper.
- the foam made of the polylactic acid foaming composition can be degraded in a non-closed space of appropriate temperature and humidity.
- appropriate temperature and humidity For water and carbon dioxide. Water and carbon dioxide can be returned to the environment for biorecycling.
- the traditional plastic foaming material is replaced by polylactic acid, and the foam formed still has good heat insulation and heat preservation effects.
- plastic foaming materials such as polyethylene (PE), polypropylene, polypropylene (PP), polystyrene (PS) or polyvinyl chloride (PVC). Improvements in this type of plastic foaming material are also used in the production of single-use food containers such as bowls, plates, cups, boxes, etc., to replace the use of traditional styrofoam materials.
- a polylactic acid foaming composition for producing a completely biodegradable foam is proposed.
- This polylactic acid foaming composition contains polylactic acid, an emulsifier, a foaming powder and a solvent.
- Polylactic acid is the main component in the foaming composition, and completely replaces the conventional plastic in the conventional foaming reaction, and polylactic acid is the main reactant of the foaming reaction. Because polylactic acid is a complete biodegradable Therefore, the foam made of the polylactic acid foaming composition is also completely biodegradable.
- the polylactic acid foaming composition contains 15% to 55% by weight of polylactic acid.
- the polylactic acid foaming composition contains 18% to 45% by weight of polylactic acid.
- the emulsifier is used to increase the hydrophilic value of the polylactic acid to disperse the polylactic acid in the aqueous solution. Therefore, the polylactic acid composition can be formulated into a mixture of different consistency in an aqueous solution according to the needs of subsequent use.
- the emulsifier is a natural animal emulsifier or a vegetable emulsifier.
- the emulsifier has a hydrophilic-lipophilic balance (HLB) of 6 to 18.
- the polylactic acid foaming composition contains 2% to 14% by weight of an emulsifier.
- the foaming powder is used to help the polylactic acid to undergo a foaming reaction, and the amount of the foaming powder is determined to determine the degree of foaming of the subsequent polylactic acid composition.
- the foaming powder has a foaming temperature of 70 to 160 ⁇ .
- the degree of foaming of the polylactic acid after the addition of the foaming powder was 10 times foaming. Therefore, depending on the degree of foaming desired, the polylactic acid foaming composition contains from 1% to 18% by weight of the foamed powder. According to another embodiment, the polylactic acid foaming composition contains 2% to 17% by weight of foamed powder.
- other additives may be added to the polylactic acid foaming composition to increase the medium component in the foam after foaming and to lower the thermal conductivity.
- the additive may be wood powder or hollow glass bead powder.
- the added additive also affects the softness and hardness of the foam.
- the added wood powder or hollow glass bead powder is more, the hardness of the foam after foaming of the polylactic acid foaming composition is higher; on the contrary, when the added wood powder or hollow glass bead powder is less, the polylactic acid is The foam having a foamed composition has a lower hardness, that is, the foam is softer.
- the weight percentage of the additive is from 1% to 3%. Adjust the weight percentage of the additive depending on the hardness requirements of the product.
- the components of the above polylactic acid foaming composition are required to be dispersed in a solvent.
- the solvent is water.
- the solvent addition amount of the polylactic acid foaming composition is a balance which is 100% by weight less than the weight percentage after the addition of the above respective components.
- a polylactic acid foamed paper material comprises a paper layer and a polylactic acid foam, wherein the polylactic acid foam is on the paper layer.
- the polylactic acid foam is formed by applying the above polylactic acid foaming composition onto a paper layer, and directly forming a paper layer by a subsequent heating preparation process.
- the polylactic acid foaming composition is applied to the paper layer by spraying, rolling or brushing. Therefore, the polylactic acid foaming composition can be formulated into different consistency according to the preparation process of the polylactic acid foamed paper. For example, if the polylactic acid foaming composition is too viscous when sprayed, the polylactic acid foaming composition cannot It is ejected from the nozzle. After the polylactic acid foaming composition is applied onto the paper layer, after being baked at 70 ° C and hot pressed at 100 ° C, the polylactic acid foaming composition is thermally foamed directly to the paper layer. A fully degradable polylactic acid foam is formed thereon.
- the above polylactic acid foamed paper can be used in the manufacture of various food containers.
- Disposable food containers such as cups, coffee cups, plates or bowls.
- the polylactic acid foaming composition of the present invention increases the hydrophilicity of the polylactic acid with an emulsifier, so that the polylactic acid can be formulated into compositions of different consistency according to the requirements of the subsequent preparation process.
- the paper and food containers produced by applying the polylactic acid foaming composition of the present invention can be almost completely degraded into water and carbon dioxide after being discarded. Water and carbon dioxide can be returned to the environment for biological reuse and environmental pollution reduction.
- food containers made of polylactic acid foamed paper still have the functions of heat insulation, heat preservation, water resistance and oil repellency. Furthermore, after the food container made of the polylactic acid foamed paper is used, even if it is treated by incineration, the heat energy generated is lower than that of the general plastic material, and the service life of the incinerator can be prolonged.
Abstract
Disclosed is a polylactic acid foam composition, which comprises at least polylactic acid, an emulsifying agent, foam powder and a solvent. Foam prepared with the polylactic acid foam composition can be used for thermal insulation, heat preservation, water-proofing and oil-proofing. The foam waste is totally biodegradable.
Description
聚乳酸发泡组合物 技术领域 Polylactic acid foaming composition
本发明是涉及一种发泡组合物，且特别是涉及一种含有聚乳酸的发泡组合 物。 背景技术 The present invention relates to a foaming composition, and in particular to a foaming composition containing polylactic acid. Background technique
一般纸制或塑料制的一次性使用的食品容器， 如杯、碗、盘等， 于盛装热 饮、热汤等热食时， 由于食品容器本身不具有隔热效果， 热食的热气除了会直 接由开口散出之外， 更会全面地传导至食品容器整体并往外发散。 因此， 当使 用者以手握持食品容器时， 与食品容器接触的部位便会容易地被热气烫伤。 Generally, disposable food containers made of paper or plastic, such as cups, bowls, plates, etc., when hot foods such as hot drinks and hot soups are used, since the food containers themselves do not have a heat insulating effect, the hot air of the hot foods is directly In addition to being dissipated from the opening, it is more fully transmitted to the food container as a whole and diverges outward. Therefore, when the user holds the food container by hand, the portion in contact with the food container is easily burned by the hot air.
再者， 一般用以盛装热食的食品容器， 除了必须要具有良好的防漏、 隔热 特性， 防止使用者受伤以外， 也需要具有保温的功能， 以减缓内容物与外界温 度进行热交换而变冷， 提升内容物的尝味期。 Furthermore, food containers generally used for holding hot foods must have good anti-leakage and heat-insulating properties to prevent user injury, and also need to have a heat-insulating function to slow the heat exchange between the contents and the outside temperature. It turns cold and enhances the taste of the contents.
目前，坊间常见的一次性食品保温容器仍然以保丽龙材质为多数。主要因 为保丽龙材质具隔热与保温作用。再者，保丽龙由聚苯乙烯或是聚氯乙烯发泡 成型， 其发泡后的体积可以膨胀至原材料的三到六十倍， 不仅质轻且价廉。然 而， 由于聚苯乙烯、 聚氯乙烯并无法自行降解， 且废弃后燃烧， 会产生大量的 有毒气体， 对自然生态环境造成极大的危害。 发明内容 At present, the common disposable food insulated containers in the market are still made of styrofoam. Mainly because of the insulation and insulation of the styrofoam material. Furthermore, styrofoam is foamed from polystyrene or polyvinyl chloride, and its foamed volume can be expanded to three to sixty times the raw material, which is not only lightweight but also inexpensive. However, since polystyrene and polyvinyl chloride are not degradable by themselves and burned after being discarded, a large amount of toxic gas is generated, which is extremely harmful to the natural ecological environment. Summary of the invention
因此，本发明的一方面是在提供一种聚乳酸发泡组合物，供制成具有隔热 与保温效果的发泡体。且其所制成的发泡体为完全的生物可降解性，减少对环 境的污染。 Accordingly, an aspect of the present invention is to provide a polylactic acid foaming composition for producing a foam having heat insulating and heat insulating effects. Moreover, the foam produced is completely biodegradable, reducing environmental pollution.
依据本发明一实施方式， 一种聚乳酸发泡组合物， 至少包含聚乳酸、乳化 剂、发泡粉与溶剂。乳化剂为帮助增加聚乳酸的亲水值。聚乳酸的重量百分比 为 15%~55%， 乳化剂的重量百分比为 2%〜14%， 发泡剂的重量百分比为 1%~18%， 而溶剂则为余量。 According to an embodiment of the present invention, a polylactic acid foaming composition comprising at least polylactic acid, an emulsifier, a foaming powder and a solvent. Emulsifiers help to increase the hydrophilicity of polylactic acid. The weight percentage of the polylactic acid is 15% to 55%, the weight percentage of the emulsifier is 2% to 14%, the weight percentage of the foaming agent is 1% to 18%, and the solvent is the balance.
本发明的另一方面是在提供一种聚乳酸发泡纸材， 本身为生物可降解性， 不需经过处理即可于环境中自然降解。
依据本发明另一实施方式，一种聚乳酸发泡纸材，至少包含纸层与聚乳酸 发泡体。 聚乳酸发泡体位于纸层上， 且聚乳酸发泡体包含聚乳酸发泡组合物。 其中聚乳酸发泡组合物包含聚乳酸、乳化剂、发泡粉与溶剂。乳化剂为帮助增 加聚乳酸的亲水值， 且聚乳酸的重量百分比为 15%~55%， 乳化剂的重量百分 比为 2%~14%， 发泡粉的重量百分比为 1%~18%， 而溶剂则为余量。 Another aspect of the present invention is to provide a polylactic acid foamed paper which is itself biodegradable and can be naturally degraded in the environment without treatment. According to another embodiment of the present invention, a polylactic acid foamed paper material comprising at least a paper layer and a polylactic acid foam. The polylactic acid foam is on the paper layer, and the polylactic acid foam contains a polylactic acid foaming composition. The polylactic acid foaming composition comprises polylactic acid, an emulsifier, a foaming powder and a solvent. The emulsifier is used to help increase the hydrophilic value of the polylactic acid, and the weight percentage of the polylactic acid is 15% to 55%, the weight percentage of the emulsifier is 2% to 14%, and the weight percentage of the foaming powder is 1% to 18%. The solvent is the balance.
依据本发明又一实施方式，一种食品容器，至少包含前述的聚乳酸发泡纸 材。 According to still another embodiment of the present invention, a food container comprising at least the aforementioned polylactic acid foamed paper.
应用本发明的聚乳酸发泡组合物， 由于聚乳酸为完全的生物可降解性， 因 此于适当温度、湿度的非密闭空间中，聚乳酸发泡组合物所制成的发泡体可被 降解为水与二氧化碳。 而水与二氧化碳可回归于环境中， 供生物再循环利用。 此外， 以聚乳酸取代传统塑料发泡材料， 所形成的发泡体仍具有良好的隔热及 保温效果。 具体实施方式 According to the polylactic acid foaming composition of the present invention, since the polylactic acid is completely biodegradable, the foam made of the polylactic acid foaming composition can be degraded in a non-closed space of appropriate temperature and humidity. For water and carbon dioxide. Water and carbon dioxide can be returned to the environment for biorecycling. In addition, the traditional plastic foaming material is replaced by polylactic acid, and the foam formed still has good heat insulation and heat preservation effects. detailed description
由于保丽龙材料无法在自然环境中自行降解，经弃置后势必对环境造成极 大的危害，而成为环境污染的重要因素。 目前市面上已有可降解性塑料发泡产 品的引进和生产研发。然而多是以传统的塑料发泡材料为改良标的，掺配一定 比例的淀粉所制造的发泡产品。 传统的塑料发泡材料例如聚乙烯 (polyethylene, PE)、 聚丙;希 (polypropylene,, PP)、 聚苯乙烯 (Polystyrene, PS) 或聚氯乙烯 （Polyvinylchloride, PVC) 等。 此类塑料发泡材料的改良也 应用于一次性使用的碗、 盘、 杯、盒等食品容器的生产， 以取代传统的保丽龙 材料的使用。 Since the styrofoam material cannot degrade itself in the natural environment, it will cause great harm to the environment after being disposed of, and it will become an important factor for environmental pollution. At present, the introduction and production research and development of degradable plastic foam products are available on the market. However, most of the traditional plastic foam materials are used as a modified standard, and a foamed product made by blending a certain proportion of starch is used. Conventional plastic foaming materials such as polyethylene (PE), polypropylene, polypropylene (PP), polystyrene (PS) or polyvinyl chloride (PVC). Improvements in this type of plastic foaming material are also used in the production of single-use food containers such as bowls, plates, cups, boxes, etc., to replace the use of traditional styrofoam materials.
然而这类产品经弃置于自然环境中后，由于并非完全由生物可降解材料所 制成，仍含有部份不可降解的塑料材料。因此仅能因化学反应或生物降解作用 而碎裂成小的塑料碎片， 并不能在自然环境中完全降解。 However, after being disposed of in a natural environment, such products still contain partially non-degradable plastic materials because they are not completely made of biodegradable materials. Therefore, it can only be broken into small plastic fragments due to chemical reaction or biodegradation, and cannot be completely degraded in the natural environment.
由于上述问题，在本发明的一实施方式中提出一种聚乳酸发泡组合物，用 以制成完全的生物可降解性的发泡体。此聚乳酸发泡组合物包含聚乳酸、乳化 剂、 发泡粉与溶剂。 In view of the above problems, in one embodiment of the present invention, a polylactic acid foaming composition for producing a completely biodegradable foam is proposed. This polylactic acid foaming composition contains polylactic acid, an emulsifier, a foaming powder and a solvent.
聚乳酸为发泡组合物中的主要成份，并且完全取代以往发泡反应中的传统 塑料，而以聚乳酸作为发泡反应的主要反应物。 由于聚乳酸为完全的生物可降
解性， 因此以聚乳酸发泡组合物制成的发泡体也为完全生物可降解性。于此实 施方式中， 聚乳酸发泡组合物中含有重量百分比为 15%~55%的聚乳酸。 根据 另一实施方式， 聚乳酸发泡组合物中含有重量百分比为 18%〜45%的聚乳酸。 Polylactic acid is the main component in the foaming composition, and completely replaces the conventional plastic in the conventional foaming reaction, and polylactic acid is the main reactant of the foaming reaction. Because polylactic acid is a complete biodegradable Therefore, the foam made of the polylactic acid foaming composition is also completely biodegradable. In this embodiment, the polylactic acid foaming composition contains 15% to 55% by weight of polylactic acid. According to another embodiment, the polylactic acid foaming composition contains 18% to 45% by weight of polylactic acid.
乳化剂用以增加聚乳酸的亲水值， 使聚乳酸分散于水溶液中。 因此， 聚乳 酸组合物可依后续使用需求以水溶液调配为不同浓稠度的混合物。于此实施方 式中，乳化剂为天然动物性乳化剂或植物性乳化剂。而乳化剂的亲水亲油平衡 值（hydrophilic-lipophilic balance, HLB ) 为 6〜18。 聚乳酸发泡组合物中含有 重量百分比为 2%〜14%的乳化剂。 The emulsifier is used to increase the hydrophilic value of the polylactic acid to disperse the polylactic acid in the aqueous solution. Therefore, the polylactic acid composition can be formulated into a mixture of different consistency in an aqueous solution according to the needs of subsequent use. In this embodiment, the emulsifier is a natural animal emulsifier or a vegetable emulsifier. The emulsifier has a hydrophilic-lipophilic balance (HLB) of 6 to 18. The polylactic acid foaming composition contains 2% to 14% by weight of an emulsifier.
发泡粉用以帮助聚乳酸进行发泡反应，发泡粉的添加量决定后续聚乳酸组 合物的发泡程度。 于此实施方式中， 发泡粉的发泡温度为 70〜160Ό。 添加发 泡粉后的聚乳酸的发泡程度达 10倍发泡。 因此， 视所需的发泡程度， 聚乳酸 发泡组合物中含有重量百分比为 1%~18%的发泡粉。根据另一实施方式，聚乳 酸发泡组合物中含有重量百分比为 2%〜17%的发泡粉。 The foaming powder is used to help the polylactic acid to undergo a foaming reaction, and the amount of the foaming powder is determined to determine the degree of foaming of the subsequent polylactic acid composition. In this embodiment, the foaming powder has a foaming temperature of 70 to 160 Å. The degree of foaming of the polylactic acid after the addition of the foaming powder was 10 times foaming. Therefore, depending on the degree of foaming desired, the polylactic acid foaming composition contains from 1% to 18% by weight of the foamed powder. According to another embodiment, the polylactic acid foaming composition contains 2% to 17% by weight of foamed powder.
依照本发明的一实施方式，聚乳酸发泡组合物中也可添加其它添加剂， 以 增加发泡后的发泡体中的介质成分， 降低热传导率。添加剂可为木质粉或中空 玻璃珠粉末。 所添加的添加剂除增加隔热效果外， 也影响发泡体的软硬程度。 当添加的木质粉或中空玻璃珠粉末越多，则聚乳酸发泡组合物发泡后的发泡体 的硬度越高； 反之， 当添加的木质粉或中空玻璃珠粉末越少， 则聚乳酸发泡组 合物发泡后的发泡体的硬度越低， 即发泡体较为柔软。当聚乳酸发泡组合物中 具有添加剂时， 添加剂的重量百分比为 1%〜3%。 视产品硬度需求， 调整添加 剂的重量百分比。 According to an embodiment of the present invention, other additives may be added to the polylactic acid foaming composition to increase the medium component in the foam after foaming and to lower the thermal conductivity. The additive may be wood powder or hollow glass bead powder. In addition to increasing the heat insulating effect, the added additive also affects the softness and hardness of the foam. When the added wood powder or hollow glass bead powder is more, the hardness of the foam after foaming of the polylactic acid foaming composition is higher; on the contrary, when the added wood powder or hollow glass bead powder is less, the polylactic acid is The foam having a foamed composition has a lower hardness, that is, the foam is softer. When the polylactic acid foaming composition has an additive, the weight percentage of the additive is from 1% to 3%. Adjust the weight percentage of the additive depending on the hardness requirements of the product.
上述聚乳酸发泡组合物的成分都需分散于溶剂中。于此实施方式中，溶剂 为水。聚乳酸发泡组合物的溶剂添加量为补足上述各成份添加后不足重量百分 比 100 %的余量。 The components of the above polylactic acid foaming composition are required to be dispersed in a solvent. In this embodiment, the solvent is water. The solvent addition amount of the polylactic acid foaming composition is a balance which is 100% by weight less than the weight percentage after the addition of the above respective components.
根据本发明的另一实施例， 一种聚乳酸发泡纸材包含纸层与聚乳酸发泡 体，其中聚乳酸发泡体位于纸层上。聚乳酸发泡体是由将上述的聚乳酸发泡组 合物涂布于纸层上， 经过后续加热制备工艺直接于纸层上形成。 According to another embodiment of the present invention, a polylactic acid foamed paper material comprises a paper layer and a polylactic acid foam, wherein the polylactic acid foam is on the paper layer. The polylactic acid foam is formed by applying the above polylactic acid foaming composition onto a paper layer, and directly forming a paper layer by a subsequent heating preparation process.
前述聚乳酸发泡组合物利用喷涂、滚涂或刷涂的方式涂布于纸层上。因此 聚乳酸发泡组合物可依照聚乳酸发泡纸材的制备工艺需求， 调配为不同浓稠 度。例如， 利用喷涂时聚乳酸发泡组合物若太粘稠， 则聚乳酸发泡组合物无法
由喷嘴中喷出。 当聚乳酸发泡组合物涂布于纸层上后， 经过 70°C的烘烤以及 100°C的热压膜热压后， 聚乳酸发泡组合物即会受热发泡， 直接于纸层上形成 完全可降解的聚乳酸发泡体。 The polylactic acid foaming composition is applied to the paper layer by spraying, rolling or brushing. Therefore, the polylactic acid foaming composition can be formulated into different consistency according to the preparation process of the polylactic acid foamed paper. For example, if the polylactic acid foaming composition is too viscous when sprayed, the polylactic acid foaming composition cannot It is ejected from the nozzle. After the polylactic acid foaming composition is applied onto the paper layer, after being baked at 70 ° C and hot pressed at 100 ° C, the polylactic acid foaming composition is thermally foamed directly to the paper layer. A fully degradable polylactic acid foam is formed thereon.
上述的聚乳酸发泡纸材可用于各种食品容器的制造。如水杯、 咖啡杯、餐 盘类或碗类容器等一次性使用的食品容器。 The above polylactic acid foamed paper can be used in the manufacture of various food containers. Disposable food containers such as cups, coffee cups, plates or bowls.
本发明的聚乳酸发泡组合物中以乳化剂增加聚乳酸的亲水值，使得聚乳酸 可依照后续制备工艺需求调配为不同浓稠度的组合物。而应用本发明的聚乳酸 发泡组合物所制成的纸材与食品容器于使用废弃后，可几近完全被降解为水与 二氧化碳。 而水与二氧化碳可回归于环境中， 供生物再利用， 减少环境污染。 此外， 以聚乳酸发泡纸材制成的食品容器仍具有隔热、保温、 防水、 防油的作 用。再者， 利用聚乳酸发泡纸材制成的食品容器使用后， 即使利用焚化方式处 理， 产生的热能也较一般塑料材质低， 可延长焚化炉的使用寿命。 The polylactic acid foaming composition of the present invention increases the hydrophilicity of the polylactic acid with an emulsifier, so that the polylactic acid can be formulated into compositions of different consistency according to the requirements of the subsequent preparation process. On the other hand, the paper and food containers produced by applying the polylactic acid foaming composition of the present invention can be almost completely degraded into water and carbon dioxide after being discarded. Water and carbon dioxide can be returned to the environment for biological reuse and environmental pollution reduction. In addition, food containers made of polylactic acid foamed paper still have the functions of heat insulation, heat preservation, water resistance and oil repellency. Furthermore, after the food container made of the polylactic acid foamed paper is used, even if it is treated by incineration, the heat energy generated is lower than that of the general plastic material, and the service life of the incinerator can be prolonged.
虽然本发明已以实施方式公开如上，然其并非用以限定本发明，任何熟悉 此技术的人员， 在不脱离本发明的精神和范围内， 当可作各种的更动与润饰， 因此本发明的保护范围当视后附的权利要求书所界定的范围为准。
Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and any person skilled in the art can make various changes and refinements without departing from the spirit and scope of the present invention. The scope of the invention is defined by the scope of the appended claims.
Claims
1.一种聚乳酸发泡组合物， 至少包含： A polylactic acid foaming composition comprising at least:
一聚乳酸， 重量百分比为 15%~55%； a polylactic acid, the weight percentage is 15% to 55%;
一乳化剂，重量百分比为 2%~14%，所述乳化剂帮助增加所述聚乳酸的亲 水值； An emulsifier having a weight percentage of 2% to 14%, the emulsifier helping to increase the hydrophilic value of the polylactic acid;
一发泡粉， 重量百分比为 1 %〜18%； 以及 a foaming powder, the weight percentage is 1%~18%;
一溶剂， 余量。 A solvent, the balance.
2.根据权利要求 1所述的聚乳酸发泡组合物， 其中所述乳化剂的亲水疏水 平衡值为 6〜18。 The polylactic acid foaming composition according to claim 1, wherein the emulsifier has a hydrophilic hydrophobic balance value of from 6 to 18.
3.根据权利要求 1所述的聚乳酸发泡组合物， 其中所述乳化剂为天然性乳 化剂。 The polylactic acid foaming composition according to claim 1, wherein the emulsifier is a natural emulsifier.
4.根据权利要求 1所述的聚乳酸发泡组合物， 其中所述乳化剂为动物性乳 化剂或植物性乳化剂。 The polylactic acid foaming composition according to claim 1, wherein the emulsifier is an animal emulsifier or a vegetable emulsifier.
5.根据权利要求 1所述的聚乳酸发泡组合物， 其中所述发泡粉的发泡温度 为 70°C〜160。 (：。 The polylactic acid foaming composition according to claim 1, wherein the foamed powder has a foaming temperature of from 70 ° C to 160 °. (:.
6.根据权利要求 1所述的聚乳酸发泡组合物， 还包含一添加剂。 The polylactic acid foaming composition according to claim 1, further comprising an additive.
7.根据权利要求 6所述的聚乳酸发泡组合物，其中所述添加剂为一木质粉。 The polylactic acid foaming composition according to claim 6, wherein the additive is a wood powder.
8.根据权利要求 6所述的聚乳酸发泡组合物， 其中所述添加剂为一中空玻 璃粉末。 The polylactic acid foaming composition according to claim 6, wherein the additive is a hollow glass powder.
9.根据权利要求 6所述的聚乳酸发泡组合物， 其中所述添加剂的重量百分
比为 1 %〜3 %。 The polylactic acid foaming composition according to claim 6, wherein the weight percentage of the additive The ratio is 1% to 3%.
10.根据权利要求 1所述的聚乳酸发泡组合物， 其中所述溶剂为水 The polylactic acid foaming composition according to claim 1, wherein the solvent is water
11.一种聚乳酸发泡纸材， 至少包含： 11. A polylactic acid foamed paper comprising at least:
一纸层； 以及 a paper layer;
一聚乳酸发泡体，位于所述纸层上，且所述聚乳酸发泡体具有一聚乳酸发 泡组合物， 其中所述聚乳酸发泡组合物包含： a polylactic acid foam on the paper layer, and the polylactic acid foam has a polylactic acid foaming composition, wherein the polylactic acid foaming composition comprises:
一聚乳酸， 重量百分比为 15%~55%； a polylactic acid, the weight percentage is 15% to 55%;
一乳化剂，重量百分比为 2%~14%，所述乳化剂帮助增加所述聚乳酸的 亲水值； An emulsifier having a weight percentage of 2% to 14%, the emulsifier helping to increase the hydrophilic value of the polylactic acid;
一发泡粉， 重量百分比为 1%~18%； 以及 a foaming powder, the weight percentage is 1% to 18%;
一溶剂， 余量。 A solvent, the balance.
12.根据权利要求 11所述的聚乳酸发泡纸材， 其中所述聚乳酸发泡组合物 以喷涂、滚涂或刷涂方式涂布于所述纸层上，并于加热烘烤后形成聚乳酸发泡 体。 The polylactic acid foamed paper according to claim 11, wherein the polylactic acid foaming composition is applied to the paper layer by spraying, rolling or brushing, and is formed after heating and baking. Polylactic acid foam.
13.—种食品容器， 至少包含根据权利要求 11所述的聚乳酸发泡纸材
13. A food container comprising at least the polylactic acid foamed paper material according to claim 11
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| CN200910127155.0 | 2009-03-16 | ||
| CN 200910127155 CN101838449B (en) | 2009-03-16 | 2009-03-16 | Poly lactic acid foaming composition |
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| WO2010105500A1 true WO2010105500A1 (en) | 2010-09-23 |
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ID=42739168
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| PCT/CN2010/000310 WO2010105500A1 (en) | 2009-03-16 | 2010-03-15 | Polylactic acid foam composition |
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| WO (1) | WO2010105500A1 (en) |
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| CN106142424A (en) * | 2015-03-27 | 2016-11-23 | 林沛缇 | Foaming vessel manufacture method |
| CN106579964A (en) * | 2016-12-13 | 2017-04-26 | 张世平 | Leisure heat insulation coffee cup |
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| CN101838449B (en) | 2012-05-30 |
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