WO2020232671A1 - 环保餐厨用具及其制造方法 - Google Patents
环保餐厨用具及其制造方法 Download PDFInfo
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- WO2020232671A1 WO2020232671A1 PCT/CN2019/087996 CN2019087996W WO2020232671A1 WO 2020232671 A1 WO2020232671 A1 WO 2020232671A1 CN 2019087996 W CN2019087996 W CN 2019087996W WO 2020232671 A1 WO2020232671 A1 WO 2020232671A1
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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
- B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
- B65D65/38—Packaging materials of special type or form
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- the invention relates to a kitchen utensil and a manufacturing method thereof, in particular to an environmentally friendly kitchen utensil and a manufacturing method thereof.
- the technical problem to be solved by the present invention is to provide an environmentally friendly kitchen utensils for the deficiencies of the prior art, which are safe food containers or tableware, while taking into account environmental protection, will not cause environmental pollution and burden, so as to replace the common use Plastic kitchen utensils.
- one of the technical solutions adopted by the present invention is to provide an environmentally friendly kitchen utensils, which includes 70wt% to 99wt% of calcium alginate and 1wt% to 30wt% of reinforcing materials, wherein the The water content of the environmentally friendly kitchen utensils is less than 40 wt%, and the Shore hardness of the environmentally friendly kitchen utensils is 25Hs to 50Hs.
- the reinforcing material comprises grains of wheat straw, rice straw, corn, oyster husk, stone or any combination thereof.
- the environmentally friendly kitchen utensils further include: at least one functional additive.
- another technical solution adopted by the present invention is to provide a method for manufacturing environmentally friendly kitchen utensils, which includes the following steps: First, provide an environmentally friendly material, which contains 70wt% to 99wt% of seaweed Acid monovalent metal salt and 1wt% to 30wt% of the reinforcing material; then, a gelling agent is added to the environmental protection material to form a mixed material; then, the mixed material is injected into a forming mold, and The mixed material undergoes an oxidation-reduction reaction in the forming mold to replace the alginate monovalent metal salt in the mixed material with calcium alginate to obtain a preform; finally, the preform is dried to form the Description of environmentally friendly kitchen utensils.
- the environmentally friendly kitchen utensils provided by the present invention and the manufacturing method thereof can be passed through "the environmentally friendly kitchen utensils contain 70% to 99% by weight of calcium alginate and 1% to 30% by weight of reinforcing materials "And the technical solution of "the water content of the environmentally friendly kitchen utensils is less than 40wt% and the Shore hardness of the environmentally friendly kitchen utensils is 25Hs to 50Hs” to improve the sturdiness of the environmentally friendly kitchen utensils, and after using the environmentally friendly kitchen utensils Later, the environmentally friendly kitchen utensils can be reduced and decomposed into substances that will not cause environmental pollution, so that the existing plastic kitchen utensils can be replaced, and the effect of plastic reduction can be achieved.
- the reinforcing material comprises grains of wheat straw, rice straw, corn, oyster husk, stone or any combination thereof.
- the monovalent metal salt of alginic acid is sodium alginate, potassium alginate or a combination thereof.
- the environmental protection material further includes at least one functional additive.
- the mixed material is first placed at a temperature of 70°C to 85°C, and then cooled to 0°C to 25°C.
- the step of drying the preform it further comprises: a step of cleaning the preform.
- mixing is performed at a temperature of 50°C to 70°C.
- Figure 1 is a flow chart of the manufacturing method of the environmentally friendly kitchen utensils of the present invention.
- step S2 is a schematic diagram of step S2 of the manufacturing method of environmentally friendly kitchen utensils of the present invention.
- Fig. 3 is a schematic diagram of step S3 of the manufacturing method of the environmentally friendly kitchen utensils of the present invention.
- FIG. 4 is a schematic diagram of step S4 of the manufacturing method of the environmentally friendly kitchen utensils of the present invention.
- the present invention provides a method for manufacturing environmentally friendly kitchen utensils, which at least includes the following steps: step S1, providing an environmentally friendly material; step S2, adding a gelling agent to the environmentally friendly material to A mixed material is formed; step S3, the mixed material is placed in a forming mold to obtain a preform; step S4, the preform is dried to form the environmentally friendly kitchen utensils.
- the environmental protection material mainly includes a monovalent metal salt of alginic acid and a reinforcing material, wherein the content of the monovalent metal salt of alginic acid may be 70 wt% to 99 wt%, and the content of the reinforcing material may be 1 wt% to 30 wt%.
- Alginic acid is mainly derived from natural brown algae, which easily combines with cations to form alginate, such as potassium alginate, sodium alginate, ammonium alginate, etc.
- the monovalent metal salt of alginic acid is potassium alginate, sodium alginate or a combination thereof, preferably sodium alginate, but not limited thereto.
- the use of reinforcing materials is mainly to enhance the mechanical properties of environmentally friendly kitchen utensils, such as enhancing the tensile strength, impact resistance and hardness of environmentally friendly kitchen utensils. Therefore, if the content of reinforcing materials is less than 1wt%, it is easy to cause environmental protection. The hardness of the kitchen utensils is insufficient, and it is easy to be deformed by extrusion; if the content of the reinforcing material is higher than 30wt%, it is easy to cause the environmentally friendly kitchen utensils to be difficult to shape and easy to be brittle and crushed.
- the reinforcing material can be organic or inorganic natural raw materials or fishery and agricultural wastes, such as grains of wheat straw, rice straw, corn, oyster husk, stone or a combination thereof.
- the composition of the environmental protection material can be uniformly mixed by the existing mixing device (such as a vacuum mixer), or the composition of the environmental protection material can be added to water and mixed into a suspension. If necessary, the environmental protection material can be vacuum defoamed.
- the environmentally friendly material may contain at least one functional additive among the following functional additives as needed: chelating agent, lubricant, antioxidant, stabilizer and coloring agent, but not limited thereto .
- the acid-base value of the monovalent metal salt of alginic acid (such as sodium alginate) in the environmental protection material can be adjusted, or the solubility of the gelling agent can be increased to increase the degree of ion release. This achieves a homogeneous exchange reaction.
- the chelating agent may be acid, sodium sulfate, glycerin, sodium chloride, D-glucono delta-lactone.
- the gelling agent mainly contains calcium salt.
- the gelling agent can be calcium chloride, calcium sulfate, calcium sulfate dihydrate, calcium gluconate or calcium lactate, but not limited to this.
- the gelling agent can control the release of ions by adjusting its pH value.
- the gelling agent may be in the state of a solution dissolved in water.
- step S2 of this embodiment the gelling agent 10 is added dropwise to the environmentally friendly material 20 stirred with a magnet to obtain a mixed material.
- the temperature in the process is set Set at 50°C to 70°C.
- step S2 the main purpose of step S2 is to fully mix the environmental protection material with the gelling agent, but the oxidation-reduction reaction has not yet been carried out; the gelling agent will be slightly soluble in water, and the chelating agent will decrease over time.
- the pH value of the solution controls the release of ions. Therefore, in step S1, the temperature of the environmental protection material can also be kept between 50°C and 70°C.
- step S3 the mixed material 30 can be filled into the first mold 2 (forming mold) through the hot runner 1, and the mixed material 30 located in the first mold 2 is cooled and solidified to obtain a preform Molded body 40.
- the mixed material 30 is injected at a temperature of 50°C to 70°C (preferably 60°C to 70°C), and then cooled to room temperature (preferably 0°C to 25°C) .
- the oxidation-reduction reaction will start to replace the alginate monovalent metal salt in the mixed material with calcium alginate and solidify.
- a sodium alginate solution and a calcium ion solution are mixed to form a mixed material, and solidified calcium alginate (the main component of the preform) and salt water (sodium chloride) will be produced after oxidation and reduction.
- a layer of release agent can be pre-coated on the first mold as required, so that the preform can be easily demolded; and the preform can be cleaned appropriately as required to remove salt water.
- the drying method is not limited to any method. It can be electrothermal drying, hot air drying, etc., as long as the preform can be dried to a moisture content of less than 40wt% (usually the moisture content is between 25wt% and 40wt%) Between), after the drying and dehydration is completed, the environmentally friendly kitchen utensils can be obtained. It should be noted that when the moisture content is higher than 40wt%, it is easy to cause the possibility of moldy in environmentally friendly kitchen utensils. It is worth noting that, since the shrinkage rate from the preform to the environmentally friendly kitchen utensils is 70% to 85%, as shown in FIG. 4, the preform 40 can be placed on a second mold 3 for a drying step. Wherein, the size ratio of the second mold 3 is approximately 15% to 30% of the size ratio of the first mold 2 (shown in FIG. 3).
- step S4 subsequent processing steps such as product demoulding, product inspection, and packaging may also be included.
- the environmentally friendly kitchen utensils prepared by the above-mentioned manufacturing method contain 70% to 99% by weight of calcium alginate and 1% to 30% by weight of reinforcing materials, and the moisture content of the environmentally friendly kitchen utensils is less than 40% by weight, and the environmentally friendly kitchen utensil
- the Shore hardness of the appliance is 25Hs to 50Hs.
- the environmentally friendly kitchen utensils can be bowls, straws, cups, plates, chopsticks, knives, forks or spoons. However, the present invention is not limited to the above-mentioned examples. It is worth noting that environmentally friendly kitchen utensils can withstand a certain degree of high temperature, acid and alkali. Since the environmentally friendly kitchen utensils are dehydrated and dried with a moisture content of less than 40wt%, they have a certain degree of anti-mold and waterproof effect, and the environmentally friendly kitchen utensils have a certain thickness, which is about 1 mm to 4 mm. Preferably, it is 1.5 mm to 2.5 mm, which can help the environmentally friendly kitchen utensils not be easily deformed or broken, so that the environmentally friendly kitchen utensils have good supporting force to hold food or beverages.
- the environment-friendly material is heated to 50°C to 60°C, stirred at 120 rpm per minute until uniform, and then ultrasonic vibration is used to remove bubbles in the environment-friendly material.
- the gelling agent is slowly added to the environmental protection material, and maintained at 50°C to 60°C, and stirred at 120 rpm for 5 minutes to prepare a mixed material.
- the mixed material is filled into a straw mold pre-coated with glycerin, and it is allowed to stand to room temperature for cooling to form a pre-formed straw; finally, the pre-formed straw is dried to obtain an environmentally friendly straw.
- the environmentally friendly kitchen utensils of the present invention are mainly composed of calcium alginate, so the environmentally friendly kitchen utensils can be decomposed again by redox.
- the reduction decomposition method is for example: only need to soak the environmentally friendly kitchen utensils in the sodium citrate aqueous solution, then the environmentally friendly kitchen utensils can be reduced into salt water, calcium citrate and reinforcing materials. Therefore, the use of the environmentally friendly kitchen utensils of the present invention can effectively reduce the amount of plastic tableware used, and achieve the effects of environmental protection and no environmental pollution.
- the environmentally friendly kitchen utensils provided by the present invention and the manufacturing method thereof can be passed through "the environmentally friendly kitchen utensils contain 70% to 99% by weight of calcium alginate and 1% to 30% by weight of reinforcing materials "And the technical solution of "the water content of the environmentally friendly kitchen utensils is less than 40wt% and the Shore hardness of the environmentally friendly kitchen utensils is 25Hs to 50Hs” to improve the sturdiness of the environmentally friendly kitchen utensils, and after using the environmentally friendly kitchen utensils Later, the environmentally friendly kitchen utensils can be reduced and decomposed into substances that will not cause environmental pollution, so that the existing plastic kitchen utensils can be replaced, and the effect of plastic reduction can be achieved.
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Abstract
一种环保餐厨用具及其制造方法，包括提供一环保材料（20），其包含70wt％至99wt％的海藻酸一价金属盐以及1wt％至30wt％的增强材料；将一胶凝剂（10）加入环保材料（20）中，以形成一混合材料（30）；将混合材料（30）注入一成型模具（2）中，并使混合材料（30）于成型模具（2）中发生氧化还原反应，以将混合材料（30）中的海藻酸一价金属盐置换成海藻酸钙，得到预成型体（40）；干燥预成型体（40），以形成环保餐厨用具。该环保餐厨用具提升了坚固度，在使用完环保餐厨具后，可以将环保餐厨具还原分解为不会产生环境污染的物质，从而可以取代现有的塑料制餐厨用具，达到减塑的效果。
Description
本发明涉及一种餐厨用具及其制造方法，特别是涉及一种环保餐厨用具及其制造方法。
一次性的塑胶制餐厨用具带给现代社会许多便利性，然而，由于塑胶大多是属于不易被环境所分解的高分子合成树脂，其累积于环境已造成生物栖地的严重破坏。截至2015年，约已有63亿吨的塑胶垃圾产生，并且严重危害到生态环境以及生物生存，甚至于以塑胶微粒的型态循环至生物链中。
为了环境的永续发展，已有许多国家采取政策禁止或限制使用塑胶制品。响应环保的绿色产品也成为流行，其中大部分的产品是以生物可分解塑胶材料或天然作为原料，然而生物可分解塑胶材料仍存在许多争议，例如：属于生物可分解塑胶的聚乳酸(Polylactide,PLA)的分解条件其实十分严苛，却并没有适当的分解场所，依旧造成污染问题；业者常混用一般塑胶材料，用以改善生物可分解塑胶的耐热性或坚固性较低的缺点，则回归塑胶污染问题。
故，如何制造出不包含塑胶成分又可分解的便利性用具，来克服上述的缺陷，已成为该项事业所欲解决的重要课题之一。
发明内容
本发明所要解决的技术问题在于，针对现有技术的不足提供一种环保餐厨用具，其为安全食品容器或餐具，同时兼顾环保、不会造成环境污染及负担，从而可以取代大众习惯使用的塑料制餐厨用具。
为了解决上述的技术问题，本发明所采用的其中一技术方案是，提供一种环保餐厨用具，其包括70wt％至99wt％的海藻酸钙以及1wt％至30wt％的增强材料，其中所述环保餐厨用具的含水量低于40wt％，所述环保餐厨用具的萧氏硬度为25Hs至50Hs。
优选地，所述增强材料包含麦秆、稻秆、玉米、蚵壳、石头或其任意组合的颗粒。
优选地，所述环保餐厨用具还进一步包含：至少一功能性添加物。
为了解决上述的技术问题，本发明所采用的另外一技术方案是，提供一种环保餐厨用具的制造方法，其包括以下步骤：首先，提供一环保材料，其包含70wt％至99wt％的海藻酸一价金属盐以及1wt％至30wt％的增强材料；接着，将一胶凝剂加入所述环保材料中，以形成一混合材料；然后，将所述混合材料注入一成型模具中，并使所述混合材料于所述成型模具中发生氧化还原反应，以将混合材料中的海藻酸一价金属盐置换成海藻酸钙，得到预成型体；最后，干燥所述预成型体，以形成所述环保餐厨用具。
本发明的其中一有益效果在于，本发明所提供的环保餐厨用具及其制造方法，其能通过“环保餐厨用具包含70wt％至99wt％的海藻酸钙以及1wt％至30wt％的增强材料”以及“环保餐厨用具的含水量低于40wt％且环保餐厨用具的萧氏硬度为25Hs至50Hs”的技术方案，以提升环保餐厨用具的坚固度，以及使用完所述环保餐厨具后，可以将所述环保餐厨具还原分解为不会产生环境污染的物质，从而可以取代现有的塑料制餐厨用具，达到减塑的效果。
优选地，所述增强材料包含麦秆、稻秆、玉米、蚵壳、石头或其任意组合的颗粒。
优选地，所述海藻酸一价金属盐为海藻酸钠、海藻酸钾或其组合。
优选地，所述环保材料又包含至少一功能性添加物。
优选地，在将所述混合材料置入所述成型模具的步骤中，是先在70℃至85℃的温度下置入混合材料后，再冷却至0℃至25℃。
优选地，在将所述预成型体干燥的步骤之前，还进一步包括：一清洗所述预成型体的步骤。
优选地，在将所述胶凝剂加入所述环保材料中的步骤中，是在50℃至70℃的温度下进行混合。
为使能更进一步了解本发明的特征及技术内容，请参阅以下有关本发明的详细说明与附图，然而所提供的附图仅用于提供参考与说明，并非用来对本发明加以限制。
图1为本发明的环保餐厨用具的制造方法的流程图。
图2为本发明的环保餐厨用具的制造方法的步骤S2的示意图。
图3为本发明的环保餐厨用具的制造方法的步骤S3的示意图。
图4为本发明的环保餐厨用具的制造方法的步骤S4的示意图。
市面上宣称以天然原料(例如：麦秆、玉米或稻秆)制成的环保餐具为无毒且可生物分解，其主要原料为被称为“绿色塑料”的聚乳酸(Polylactic Acid,PLA)。然而，聚乳酸餐具只要超过60℃就会开始变形，因此大部分厂商会还是混入传统塑料材料(例如：聚丙烯)用以增加餐具的持久性与耐热度，反而回归成为添加有环保材质的塑料制餐具。因此，本发明实施例提供一种环保餐厨用具，其具有坚固、耐高温、耐酸碱、难燃、防水等特点，同时又不含有任何塑料材料，不会造成环境污染与负担。
以下是通过特定的具体实施例来说明本发明所公开有关“环保餐厨用具及其制造方法”的实施方式，本领域技术人员可由本说明书所公开的内容了解本发明的优点与效果。本发明可通过其他不同的具体实施例加以施行或应用，本说明书中的各项细节也可基于不同观点与应用，在不悖离本发明的构思下进行各种修改与变更。另外，本发明的附图仅为简单示意说明，并非依实际尺寸的描绘，事先声明。以下的实施方式将进一步详细说明本发明的相关技术内容，但所公开的内容并非用以限制本发明的保护范围。
应当可以理解的是，本文中所使用的术语“或”，应视实际情况可能包括相关联的列出项目中的任一个或者多个的组合。
请参阅图1，本发明提供一种环保餐厨用具的制造方法，其至少包括下列几个步骤：步骤S1，提供一环保材料；步骤S2，将一胶凝剂加入所述环保材料中，以形成一混合材料；步骤S3，将所述混合材料置入一成型模具中，得到一预成型体；步骤S4，将所述预成型体干燥，以形成所述环保餐厨用具。
在步骤S1中，环保材料主要包含海藻酸一价金属盐以及增强材料，其中海藻酸一价金属盐的含量可为70wt％至99wt％，增强材料的含量可为1wt％至30wt％。
海藻酸(Alginic acid)的主要取自于天然的褐藻，其容易与阳离子结合形成海藻酸盐，例如海藻酸钾、海藻酸钠、海藻酸铵等。于本发明实施例中，海藻酸一价金属盐为海藻酸钾、海藻酸钠或其组合，较佳为海藻酸钠，但不以此为限。
增强材料的使用主要是为了增强环保餐厨用具的力学性能，例如增强环保餐厨用具的抗张强度、耐冲击性、硬度等，因此，增强材料的含量若少于1wt％时，容易造成环保餐厨用具的硬度不足，容易因受到挤压而变形；增强材料的含量若高于30wt％时，又容易造成环保餐厨用具不易成型并容易脆化粉碎。增强材料可为有机或无机的天然原料或渔、农业废弃物，例如：麦秆、稻秆、玉米、蚵壳、石头或其组合的颗粒。
环保材料的组成成分可以通过现有的混和装置(例如：真空搅拌机)混和均匀，亦可以 将环保材料的组成成分加入水中混和为悬浮液，必要时，环保材料可以再经过真空消泡处理。在不阻碍本发明预期效果的情况下，环保材料视需要可包含下列功能性添加剂中的至少一种功能性添加剂︰螯合剂、润滑剂、抗氧化剂、稳定剂及着色剂，但不限制于此。需要说明的是，透过添加螯合剂，可以调整环保材料中的海藻酸一价金属盐(如海藻酸钠)的酸碱值，或增加胶凝剂的溶解度，以增加离子的释放程度，借此达到均质的交换反应。举例而言，螯合剂可以是酸、硫酸钠、甘油、氯化钠、D-葡萄糖酸内酯(Glucono delta-lactone)。
在步骤S2中，将胶凝剂主要包含钙盐，举例而言，胶凝剂可以是氯化钙、硫酸钙、二水硫酸钙、葡萄糖酸钙或乳酸钙，但不以此为限。详细而言，胶凝剂可以藉由调整其酸碱值来控制离子的释放。此外，胶凝剂也可以是溶于水的溶液状态。
更详细而言，如图2所示，于本实施例的步骤S2中，是将胶凝剂10以逐滴加入以磁石搅拌的环保材料20中，以得到混合材料，其过程中温度是设定在50℃至70℃。
需要说明的是，在步骤S2主要目的是要将环保材料与胶凝剂充分混和，但尚未进行氧化还原反应；胶凝剂会因为其具有微溶于水的特性，透过螯合剂随时间降低溶液酸碱值，控制离子释放。因此，在步骤S1中，亦可以让环保材料的温度保持在50℃至70℃之间。
在步骤S3中，如图3所示，可以将混合材料30通过热流道1来填入第一模具2(成型模具)中，位于第一模具2中的混合材料30经过冷却固化后即得到预成型体40。详细而言，在步骤S3中，是先在50℃至70℃的温度(较佳为60℃至70℃)下注入混合材料30后，再冷却至室温(较佳为0℃至25℃)。
混合材料混合时间超过5分钟，会开始进行氧化还原反应，以将混合材料中的海藻酸一价金属盐置换成海藻酸钙并固化。举例而言，于本实施例中，使用海藻酸钠溶液与钙离子溶液混合成为混合材料，氧化还原后会产生固化的海藻酸钙(预成型体的主要成分)与盐水(氯化钠)。另外，可以视需求在第一模具上预先涂布一层脱模剂，使得预成型体方便脱模；以及，可以视需求适当清洗预成型体，用以去除盐水。
在步骤S4中，干燥的方式并不限于任何方式，可以是电热干燥、热风干燥等，只要能将预成型体干燥至含水率低于40wt％即可(通常含水率介于25wt％至40wt％之间)，干燥脱水完成后，即可得到环保餐厨用具。应当注意的是，当含水率高于40wt％时，容易造成环保餐厨用具会有容易发霉的可能性。值得说明的是，由于预成型体至环保餐厨用具的收缩率为70％至85％，因此，如图4所示，可以将预成型体40放置于一第二模具3上进行干燥步骤，其中，第二模具3的尺寸比例约为第一模具2(图3所示)的尺寸比例的15％至30％。
在步骤S4之后，还可以包括成品脱模、产品检验、包装等后续处理步骤。
由上述制造方法所制备而得的环保餐厨用具包含70wt％至99wt％的海藻酸钙以及1wt％至30wt％的增强材料，且环保餐厨用具的含水率低于40wt％，且环保餐厨用具的萧氏硬度为25Hs至50Hs。
环保餐厨用具可以是碗、吸管、杯子、盘子、筷子、刀子、叉子或汤匙。然而，本发明不以上述所举的例子为限。值得说明的是，环保餐厨用具可耐一定程度的高温以及酸碱性。由于环保餐厨用具经过脱水干燥处理，含水率低于40wt％，具有一定程度的防霉与防水的效果，且环保餐厨用具会有一定的厚度，厚度约为1公厘至4公厘，较佳为1.5公厘至2.5公厘，可以帮助环保餐厨用具不会轻易变形或破碎，让环保餐厨用具具有良好的支撑力可以盛装食物或饮料。
实施例环保餐厨用具作为吸管的制造方法
将4公克的海藻酸钠以及D-葡萄糖酸内酯溶于100毫升的配制用水中，配制为环保材料；其中，配制用水是去离子水或是使用EDTA螯合剂事先将水中金属离子去除后的水，用以避免环保材料与金属离子发生反应而影响后续步骤。
将环保材料加热至50℃至60℃，以每分钟转速120rpm搅拌至均匀，而后再利用超音波震荡法除去环保材料中的气泡。
取1公克的碳酸钙溶于100毫升的配制用水中，并加热至50℃至60℃，配制成为胶凝剂。
将胶凝剂缓慢加入环保材料中，并保持50℃至60℃，以每分钟转速120rpm搅拌5分钟，配制为混和材料。
将混和材料填充入预涂好甘油的吸管模具中，并静置至室温冷却成型，得到预成型吸管；最后，将预成型吸管干燥，即得到环保吸管。
值得注意的是，本发明的环保餐厨用具主要是由海藻酸钙所组成，因此可以使用氧化还原方式将环保餐厨用具再次分解。还原分解方式例如：仅需要将环保餐厨用具泡入柠檬酸钠水液中，则可将环保餐厨用具还原成盐水、柠檬酸钙以及增强材料。因此，使用本发明的环保餐厨用具可以有效减少塑料制餐具的使用量，达到环保且不会造成环境污染的效果。
[实施例的有益效果]
本发明的其中一有益效果在于，本发明所提供的环保餐厨用具及其制造方法，其能通过“环保餐厨用具包含70wt％至99wt％的海藻酸钙以及1wt％至30wt％的增强材料”以及 “环保餐厨用具的含水量低于40wt％且环保餐厨用具的萧氏硬度为25Hs至50Hs”的技术方案，以提升环保餐厨用具的坚固度，以及使用完所述环保餐厨具后，可以将所述环保餐厨具还原分解为不会产生环境污染的物质，从而可以取代现有的塑料制餐厨用具，达到减塑的效果。
以上所公开的内容仅为本发明的优选可行实施例，并非因此局限本发明的权利要求书的保护范围，所以凡是运用本发明说明书及附图内容所做的等效技术变化，均包含于本发明的权利要求书的保护范围内。
Claims (10)
- 一种环保餐厨用具，其特征在于，所述环保餐厨用具包括：70wt％至99wt％的海藻酸钙；以及1wt％至30wt％的增强材料；其中，所述环保餐厨用具的含水量低于40wt％，所述环保餐厨用具的萧氏硬度为25Hs至50Hs。
- 根据权利要求1所述的环保餐厨用具，其特征在于，所述增强材料包含麦秆、稻秆、玉米、蚵壳、石头或其任意组合的颗粒。
- 根据权利要求1所述的环保餐厨用具，其特征在于，所述环保餐厨用具还进一步包含：至少一功能性添加物。
- 一种环保餐厨用具的制造方法，其特征在于，包括：提供一环保材料，其包含70wt％至99wt％的海藻酸一价金属盐以及1wt％至30wt％的增强材料；将一胶凝剂加入所述环保材料中，以形成一混合材料，其中所述胶凝剂包含钙盐；将所述混合材料置入一成型模具中，并使所述混合材料于所述成型模具中发生氧化还原反应，以使混合材料中的海藻酸一价金属盐置换成海藻酸钙，而得到一预成型体；以及干燥所述预成型体，以形成所述环保餐厨用具。
- 根据权利要求4所述的环保餐厨用具的制造方法，其特征在于，所述增强材料包含麦杆、稻秆、玉米、蚵壳、石头或其任意组合的颗粒。
- 根据权利要求4所述的环保餐厨用具的制造方法，其特征在于，所述海藻酸一价金属盐为海藻酸钠、海藻酸钾或其组合。
- 根据权利要求4所述的环保餐厨用具的制造方法，其特征在于，所述环保材料又包含至少一功能性添加物。
- 根据权利要求4所述的环保餐厨用具的制造方法，其特征在于，在将所述混合材料置入所述成型模具的步骤中，是先在70℃至85℃的温度下置入混合材料后，再冷却至0℃至25℃。
- 根据权利要求4所述的环保餐厨用具的制造方法，其特征在于，在将所述预成型体干燥的步骤之前，还进一步包括：一清洗所述预成型体的步骤。
- 根据权利要求4所述的环保餐厨用具的制造方法，其特征在于，在将所述胶凝剂加入所述环保材料中的步骤中，是在50℃至70℃的温度下进行混合。
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