201028344 、發明說明： 【發明所屬之技術領域】 本發明是有關於一種杯蓋， β 特別疋4日一種由生物可降 解材質所製成的環保杯蓋。 【先前技術】 -般餐飲店、茶店或咖啡店，為了因應客人外帶飲料 的需求，會使用紙製或„製的免洗杯盛裝外帶飲料，且 會在杯子上緣蓋上一杯蓋以封蓋杯口，避免杯子内的液體 溢出並方便攜帶。 由於部分外帶飲料為熱飲，該杯蓋必須能耐熱，且為 了防止杯蓋自杯子脫落，造成飲料溢出，杯蓋須有一定的 結構強度與硬度。因此，現有的—杯s i通常是由聚笨乙 烯（polystyrene，簡稱為 PS)、聚丙烯（p〇lypr〇pyiene，簡稱 為PP)等具有加工性良好、耐熱溫性佳與力學強度高等特性 的高分子聚合物材質所製成，雖然可藉由ps或pp材質的 杯盍達到防止杯子内的液體溢出的防護效果，而且由於該 杯蓋是由耐熱材質製成，即使杯子内裝熱飲，也不致使該 杯蓋變形，但由於pp、PS在自然環境下很安定，不易分解 ，經吾棄或廢棄處理而埋於土壤時，由於經年累月也不會 为解’對環境造成極嚴重的危害，而成為環保上的問題。 此外以ps為材質所製成的杯蓋’搭配盛裝熱飲的杯子使 用時，則高溫的環境會使該杯蓋釋放出PS的有毒物質，導 致杯内熱飲受污染，而具有易危害人體健康的缺失。 有鑑於此，現有的另一種杯蓋是由聚乳酸（p〇lylactic 201028344 』，簡稱4 PLA，'亦稱為聚丙交醋）所製成，雖然聚乳酸 是生物降解性材料，使用後丢棄可為自然環境分解，相對 不易造成環保上的問題，但由於聚乳酸的軟化點（細 transmon’亦稱為破璃轉移温度）約為帆，耐熱性不佳， 當以聚乳酸材質的杯蓋蓋在裝有熱飲的杯子上時，該杯蓋 容易變形，導致杯蓋與杯子的密封性降低，甚至不堪使用 ’使該聚乳酸材質的杯蓋相對具有實用性較差的缺失。 【發明内容】 斤因此，本發明的目的，是在提供一種具生物降解性而 符合環保需求，且仍能維持預定的結構強度並具有較高的 熱變形溫度的環保杯蓋。 於是，本發明環保杯蓋，是由一個生物降解性組成物 成型為-個預定形狀所製成，且該生物降解性組成物包含 一個聚合物組份。 該聚合物組份包括-主原料，且該主原料是選自於聚 丁二酸-1、4-丁二醇醋㈣咖⑽㈣、“㈣敵，簡稱 為 PBS)。 本發明的有益效果在於：以聚丁二酸]、4_丁二醇醋為 該聚合物組份的主原料製成該杯蓋’則可利用pBs生物降 解的特性’使該杯蓋能在自然環境中分解而不易成為環保 上的問題’此外，由於PBS的熱變形溫度高達贼左右， 當配合裝有熱飲的杯子使用時，較不易變形，藉此使該杯 蓋可繼續與杯子形成不易脫落的緊密結合’進而能防止杯 内液體溢出，而具有較佳的實用效果。 201028344 【實施方式】 有關本發明之前述及其他技術内容、特點與功效，在 以下配合參考圖式之一個較佳實施例的詳細說明中，將可 清楚的呈現。 參閱圖1與圖2，本發明環保杯蓋2的較佳實施例是供 套蓋在一杯子20上，該環保杯蓋2由一個生物降解性組成 物成型為一個預定形狀所製成，且該生物降解性組成物包 含依預定比例相混合的一個聚合物組份及一個改質劑組份 較佳地，該生物降解性組成物包含100重量份的聚合 物組份，及15~35重量份的改質劑組份。 該聚合物組份包括一主原料及一副原料，且以該聚合 物組份的總重計，該主原料的含量為70〜1 OOwt%，該副原 料的含量為0〜30wt%。 較佳地，該主原料是選自於聚丁二酸-1、4- 丁二醇酯 (polybutylene-1、4-succinate，簡稱為 PBS)，及該副原料是 β 選自於聚乳酸。當該主原料的含量低於70 wt%時，則所製 得的杯蓋會有耐熱性不足的問題，因此，該主原料的含量 , 較佳為70〜1 OOwt%。 其中，該主原料與該副原料的使用比例，可依實際使 用需求進行調整。由於PBS的力學性能相當接近聚丙烯與 丙稀腈-丁二稀-苯乙烯共聚物（acrylonitrile-butadiene-styrene ，簡稱為ABS)，顯示相較於其他生物降解性材料，PBS的 力學性能優異，且其熱變形溫度（heat deflection temperature 201028344 ，簡稱為HDT)可達9(rc左右，並具有容易成型加工的特性 因此可配口該杯子20的杯口形狀與大小，製成不同尺 寸與型式的杯蓋2，以與杯子2G形成緊密的結合，達到防 止杯子20内的液體1〇〇溢出的使用效果。由於的熱變 H度$ ’使得《 PBS為主原料所製成的杯蓋的雜性也 被提高且較不易變形，即使杯子2〇内盛裝有高溫液體或食 物’該杯蓋2仍然能與杯子2G保持緊密結合的狀態。此外 ’藉由在該聚合物組份中添加聚乳酸作為該副原料，除了 可使最終製品的剛性增加外，還能使該杯蓋的外觀較平整 光α目此’藉由搭配PBS為主原料與聚乳酸為副原料所 製成的製品可獲得較佳的耐熱性與剛性，並能提供較佳的 外觀品質。 該改質劑組份為-選自下列群組中的物質：碳酸每、 雲母、黏土（clay)、矽酸鹽、滑石粉（仏1〇,及此等的一組合 。藉由添加該改質劑組份則可增加最終製品的機械強度， 使該杯蓋的耐用性提高。 其中，該生物降解性組成物的成型方法不應受限可 以透過各種成型加工法製成該杯蓋2，例如，可用射出成型 直接成型出預定形狀與尺寸的杯蓋2，也可以藉由熱成型法 ’先將該生物降解性組成物初步成型為—片材，再將該片 材夾在一模具上加熱到軟化狀態，並藉由外力作用，使其 緊貼模具的型面，以形成與該型面相對應的形狀，待塑料 冷卻後，就能成型出歡形狀的杯蓋2。或者，也可以利用 吹塑成型法將熔融的生物聚合物組成物擠壓成空心管狀的 201028344 瓶胚，並使該瓶胚受一組可相對應組合的模具包圍，再吹 氣使瓶胚膨脹而抵著模具内壁，待塑料凝固後，打開模具 ’同樣能成型出具預定形狀的杯蓋2。 值得說明的是，該生物降解性組成物也可以只包含聚 合物組份的主原料PBS，同樣能透過pBS容易成型加工的 方式以前述的成型方式製出該杯蓋2。 <具體例>201028344, invention: [Technical Field] The present invention relates to a cup cover, and a special environmentally-friendly cup lid made of a biodegradable material. [Prior Art] - In order to respond to the needs of customers with a drink, a paper or a disposable cup will be used to hold the take-away beverage, and a lid on the top edge of the cup will be capped. The cup mouth prevents the liquid in the cup from overflowing and is convenient to carry. Since some of the take-out beverage is a hot drink, the lid must be heat-resistant, and in order to prevent the lid from falling off the cup, the beverage overflows, and the lid must have a certain structural strength and hardness. Therefore, the existing cup-si is usually made of polystyrene (PS), polypropylene (p〇lypr〇pyiene, PP for short), etc., which has high processability, good heat resistance and high mechanical strength. Made of molecular polymer material, although it can be protected by a cup of ps or pp to prevent liquid spillage in the cup, and since the lid is made of heat-resistant material, even if the cup contains hot drinks, The cover is deformed, but since pp and PS are stable in the natural environment, they are not easily decomposed, and they are buried in the soil after being discarded or disposed of. It will be a serious problem for the environment, and it will become an environmental problem. In addition, when the cup lid made of ps is used with a cup containing hot drinks, the high temperature environment will release the lid. PS's toxic substances cause the hot drinks in the cup to be contaminated, and there is a deficiency that is harmful to human health. In view of this, another type of cup cover is made of polylactic acid (p〇lylactic 201028344), referred to as 4 PLA, 'also known as Made of polypropylene vinegar), although polylactic acid is a biodegradable material, it can be decomposed in the natural environment after use, and it is relatively difficult to cause environmental problems. However, due to the softening point of polylactic acid (fine transmon' is also called broken The glass transfer temperature is about the sail, and the heat resistance is not good. When the lid of the polylactic acid is covered on the cup with the hot drink, the lid is easily deformed, resulting in a poor seal of the lid and the cup, and even unbearable use. 'The cup lid of the polylactic acid material is relatively inferior in practical use. SUMMARY OF THE INVENTION Therefore, the object of the present invention is to provide a biodegradability and environmental protection. An environmentally-friendly cup lid which is capable of maintaining a predetermined structural strength and having a high heat distortion temperature. Thus, the eco-friendly lid of the present invention is formed by molding a biodegradable composition into a predetermined shape, and The biodegradable composition comprises a polymer component. The polymer component comprises - a main raw material, and the main raw material is selected from the group consisting of polysuccinic acid-1, 4-butanediol vinegar (4) coffee (10) (four), "(four) Enemy, referred to as PBS). The invention has the beneficial effects that: the lid of the polymer component is made of polysuccinic acid] and 4-butanediol vinegar as the main raw material of the polymer component, and the lid can be utilized to utilize the biodegradability of pBs. Decomposition in the natural environment is not easy to become an environmental problem. In addition, since the heat distortion temperature of PBS is as high as that of a thief, when it is used with a cup containing a hot drink, it is less likely to be deformed, thereby making the cup cover continue to form with the cup. The close-knit combination of the detachment can prevent the liquid in the cup from overflowing, and has a better practical effect. The above and other technical contents, features and effects of the present invention will be apparent from the following detailed description of the preferred embodiments. Referring to Figures 1 and 2, a preferred embodiment of the eco-friendly lid 2 of the present invention is provided for covering a cup 20 formed of a biodegradable composition into a predetermined shape, and The biodegradable composition comprises a polymer component and a modifier component which are mixed in a predetermined ratio. Preferably, the biodegradable composition comprises 100 parts by weight of the polymer component, and 15 to 35 weights. Part of the modifier component. The polymer component comprises a main raw material and a raw material, and the content of the main raw material is 70 to 100% by weight based on the total weight of the polymer component, and the content of the raw material is 0 to 30% by weight. Preferably, the main raw material is selected from polybutylene-1, 4-succinate (abbreviated as PBS), and the auxiliary material is β selected from polylactic acid. When the content of the main raw material is less than 70% by weight, the resulting cup lid has a problem of insufficient heat resistance, and therefore, the content of the main raw material is preferably from 70 to 100% by weight. The ratio of the main raw material to the auxiliary raw material can be adjusted according to actual use requirements. Since the mechanical properties of PBS are quite close to that of acrylonitrile-butadiene-styrene (abbreviated as ABS), it shows that PBS has excellent mechanical properties compared to other biodegradable materials. And its heat distortion temperature (heat deflection temperature 201028344, referred to as HDT) can reach about 9 (rc), and has the characteristics of easy molding processing, so that the shape and size of the cup of the cup 20 can be matched, and different sizes and types can be made. The lid 2 is formed in close contact with the cup 2G to prevent the liquid 1 in the cup 20 from overflowing. The heat change H degree $ ' makes the lid of the PBS main material miscellaneous Sex is also improved and less deformable, even if the cup 2 contains a high temperature liquid or food 'the lid 2 can still maintain a tight bond with the cup 2G. In addition' by adding polylactic acid to the polymer component As the auxiliary material, in addition to increasing the rigidity of the final product, the appearance of the lid can be made smoother by the use of PBS as the main raw material and polylactic acid as the auxiliary material. The article can obtain better heat resistance and rigidity, and can provide better appearance quality. The modifier component is - a substance selected from the group consisting of: carbonic acid per mica, clay, clay, tannic acid Salt, talc powder (仏1〇, and a combination of the above. By adding the modifier component, the mechanical strength of the final product can be increased to improve the durability of the lid. Among them, the biodegradability composition The forming method of the object should not be limited. The cup cover 2 can be formed by various molding processes. For example, the cup cover 2 of a predetermined shape and size can be directly formed by injection molding, or the body can be first formed by thermoforming. The degradable composition is initially formed into a sheet, and the sheet is then clamped on a mold to be heated to a softened state, and is pressed against the profile of the mold by an external force to form a shape corresponding to the profile. After the plastic is cooled, the shape of the cup cover 2 can be formed. Alternatively, the molten biopolymer composition can be extruded into a hollow tubular 201028344 preform by blow molding, and the preform is subjected to the preform. One group can correspond The combined mold is surrounded, and then the air is blown to expand the preform against the inner wall of the mold. After the plastic is solidified, the mold is opened to form a cup lid 2 having a predetermined shape. It is worth noting that the biodegradable composition can also be used. The main raw material PBS containing only the polymer component can also be produced by the above-described molding method in such a manner that pBS can be easily formed. <Specific example>
如下表1所示，分別使用如下所示的不同比例的聚合 物組份與改質劑組份混合成該生物降解性組成物p卜(乃，並 分別以該等組成物製成杯蓋A、B、C、D、E、F、g。 其中，作為該聚合物組份中的主原料的PBS是採用曰 ，三菱化學株式會社生產的PBS產品，且所用的PBS規格 疋選自s亥公司商品名GS pla、AZ91、AZ71、AZ6i的pBS 產品’以及其等的組合。 表1 __竺jiff性組成物的成分比例表與所斜應的权篆 L解性1 聚合物組份 Γ ~~一~---As shown in Table 1 below, the biodegradable composition p was mixed with the different proportions of the polymer component and the modifier component as shown below, and the cup cover A was made of the components, respectively. , B, C, D, E, F, and g. Among them, PBS which is the main raw material in the polymer component is a PBS product manufactured by Mitsubishi Chemical Corporation, and the PBS size used is selected from s The company's trade name GS pla, AZ91, AZ71, AZ6i pBS products 'and their combinations. Table 1 __ 竺 jiff composition of the composition ratio table and the corresponding weight 解 L solution 1 polymer composition Γ ~~一~---
改質劑組份 (重量份） 生物降解性 .组成物 編號成分 主原料 (PBS) (ί量份) 副原料 (PLA) (重量份） 杯蓋Modifier component (parts by weight) Biodegradability. Composition No. Component Main raw material (PBS) (Tilution) Sub-material (PLA) (Parts by weight) Cup lid
7 201028344 性，測試結果如下表2所示： 表2-不同成分比例所製成杯蓋的物性測試結果 測試: A B c D E F G 熔點（°c) (Melting Temperature) 110 110 110 110 145 145 145 比重（g/cm3) (density) 1.26 1.33 1.36 1.36 1.44 1.5 1.38 抗拉斷裂強度 (Kgf/cm2) (Tensile Strength) 4282.7/ 6322.1 337.3 330.0 313.0 350.0 232.0 300.3 抗拉斷裂延伸 率（％) (Enlongation Ratio) 550/220 20.0 15.0 19.0 7.4 5.7 11.2 抗拉降伏強度 (Kgf/cm2) (Yield Strength) 356.9/ 356.9 344.5 347.0 363.0 361.0 334.0 396.5 衝擊試驗（J/m) (Impact Strength) - 76.6 72.5 56.5 48.7 38.5 40.2 熱變形溫度（ °C) HDT (under load 66psi) 91.0 86.3 88.8 90.6 86.0 89.4 73.6 熔融指數 (g/1 Omin) (MFR，190°C， 2.16kg) 4.5 11.01 10.47 10.59 14.24 18.92 8.51 硬度 (Hardness， Shore D) 78 83 85 88 93 89 顏色 (Color) 白 (white) 白 (white) 白 (white) 白 (white) 白 (white) 白 (white) 白 (white) 模縮（％) (Mold Shrinkage Ratio) - 0.947 0.024 1.000 0.780 0.850 0.246 根據表2的結果顯示，當主原料（PBS)的含量比例較高 201028344 ^熱變形溫度也相對較高’顯示以PBS為主材質能提高 該環保杯蓋的耐熱温纟，另夕卜，當添加的改質劑組份含量 較间時，也有輔助提升熱變形溫度的效果。其中，測試結 2顯不F杯蓋的抗拉斷裂強度（232 〇Kgf/cm2)相較於其他杯 蓋的該數值相對較低，主要是其生物降解性組成物中的改 劑、、且伤3量較咼（含35重量份）所致，添加該改質劑組份 雖…i可增加该杯蓋的機械強度，但改質劑的含量過多，反 而使該杯蓋較易因外力而碎裂，因此，抗拉斷裂強度會隨 改質劑的用量增加而降低。 歸納上述，本發明環保杯蓋可獲致下述的功效及優點 故確實能達到本發明的目的： 以PBS作為該聚合物組份的主原料，並配合該改 質劑組份混合而成的生物降解性組成物所製出的環保杯蓋2 ’除了以PBS作為杯蓋2的主要材質而能夠賦予該杯蓋2 士物降解的特性外，PBS同樣具有一般高分子聚合物組份 谷易成型加工的特性，因此可以搭配該改質劑組份，並利 用各種成型方法製成預定形狀的杯蓋2，當廢棄時，由於該 環保杯蓋2可在自然環境中分解，而具有符合環保需求的 優點。 二、由於PBS本身的熱變形溫度高，當以其為主原料 製成該環保杯蓋2時，該杯蓋2的熱變形溫度也被提高， 由表-2的測試結果顯示，其熱變形溫度高達9〇艽左右且 溶點在1GG°C以上，因此’當制該杯蓋2封蓋在盛裝熱飲 的杯子20上時，該杯蓋2較不易產生變形，而仍能與杯子 201028344 π形成緊密結合，使該 的杯子L 哀保杯蓋2不但可封蓋在盛裝冷飲 本發 也適於封蓋在盛裝熱飲的杯子20上，顯示 ^明的環保杯蓋不但能夠在自然環境中分解，而且具有 ’.、、、性較佳與實用性較高的特性與優點。 粗路制、相對於”、卯材質所製成的杯蓋’以PBS為主原 枓=成的該環保杯蓋2具有較佳㈣熱性，因此較不易 口而釋放出危害人體的有毒物質，使本發明具有使用 上較安全健康的優點。7 201028344 Sex, the test results are shown in Table 2 below: Table 2 - Physical properties test results of cup lids prepared by different ratios of ingredients: AB c DEFG Melting Temperature 110 110 110 110 145 145 145 Specific gravity ( g/cm3) (density) 1.26 1.33 1.36 1.36 1.44 1.5 1.38 tensile strength at break (Kgf/cm2) (Tensile Strength) 4282.7/ 6322.1 337.3 330.0 313.0 350.0 232.0 300.3 Tensile elongation at break (%) (Enlongation Ratio) 550/ 220 20.0 15.0 19.0 7.4 5.7 11.2 Tensile strength (Kgf/cm2) (Yield Strength) 356.9/ 356.9 344.5 347.0 363.0 361.0 334.0 396.5 Impact test (J/m) (Impact Strength) - 76.6 72.5 56.5 48.7 38.5 40.2 Heat distortion temperature ( °C) HDT (under load 66psi) 91.0 86.3 88.8 90.6 86.0 89.4 73.6 Melt index (g/1 Omin) (MFR, 190 ° C, 2.16 kg) 4.5 11.01 10.47 10.59 14.24 18.92 8.51 Hardness (Hardness, Shore D) 78 83 85 88 93 89 Color white white white white white white white white white white (Mold Shrinkage Ratio) - 0.947 0.024 1.000 0.780 0.8 50 0.246 According to the results in Table 2, when the content of the main raw material (PBS) is higher, 201028344 ^The heat distortion temperature is also relatively high'. It shows that the PBS-based material can improve the heat-resistant temperature of the environmental protection cup cover. When the content of the added modifier component is relatively large, there is also an effect of assisting to increase the heat distortion temperature. Among them, the tensile fracture strength (232 〇Kgf/cm2) of the test cup 2 is not lower than that of other cup lids, mainly the modifier in the biodegradable composition, and The amount of injury 3 is higher than that of bismuth (including 35 parts by weight). Although the modifier component is added, i can increase the mechanical strength of the lid, but the content of the modifier is too large, which makes the lid more susceptible to external force. And the fragmentation, therefore, the tensile strength at break decreases as the amount of the modifier increases. In summary, the environmentally-friendly cup lid of the present invention can achieve the following effects and advantages, so that the object of the present invention can be achieved: PBS is used as a main raw material of the polymer component, and a mixture of the modifier components is combined. The eco-friendly lid 2' made of the degradable composition can be used as the main material of the lid 2 to impart the characteristics of degradation of the lid 2, and the PBS also has a general polymer component. The processing characteristics can be matched with the modifier component, and the cup lid 2 of a predetermined shape is formed by various molding methods. When discarded, since the eco-friendly lid 2 can be decomposed in the natural environment, it has environmental protection requirements. The advantages. Second, due to the high heat distortion temperature of the PBS itself, when the green cup cover 2 is made of the main raw material, the heat distortion temperature of the lid 2 is also improved, and the test results of Table-2 show that the heat deformation is exhibited. The temperature is up to about 9 且 and the melting point is above 1 GG ° C. Therefore, when the lid 2 is capped on the cup 20 containing the hot drink, the lid 2 is less prone to deformation, and can still be with the cup 201028344 π Forming a tight bond, so that the cup L sorrow cup cover 2 can be sealed not only in the cold drink, but also in the cup 20 containing the hot drink, and the environmentally-friendly cup lid can be decomposed in the natural environment. And has the characteristics and advantages of '.,,, and better, and more practical. The environmentally-friendly cup cover 2, which is made of a thick road system and is made of PBS as the main raw material, has a better (four) heat property, and therefore is less prone to release a toxic substance harmful to the human body. The invention has the advantages of being safer and healthier to use.
△惟以上所述者，僅為本發明之較佳實施例而已，當不 能以此限定本發明實施之範圍，即大凡依本發明中請專利 範圍及發明說明内容所作之簡單的等效變化與修飾，皆仍 屬本發明專利涵蓋之範圍内。 【圖式簡單說明】 圖1是一立體示意圖’說明本發明環保杯蓋一較佳實 施例；及The above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, that is, the simple equivalent change of the patent scope and the description of the invention in the present invention is Modifications are still within the scope of the invention. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view showing a preferred embodiment of the green cup of the present invention;
圖2是一剖視示意圖，說明該較佳實施例是由生物降 解性高分子聚合物材質所製成。 G 10 201028344 ^ 【主要元件符號說明】 液體 2 ..........杯蓋 100 20.........杯子Fig. 2 is a schematic cross-sectional view showing the preferred embodiment made of a biodegradable polymer material. G 10 201028344 ^ [Explanation of main component symbols] Liquid 2 .......... Cup cover 100 20......cup
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