TWI818000B - Polypropylene resin sheet, method for producing polypropylene resin sheet, and resin container - Google Patents

Polypropylene resin sheet, method for producing polypropylene resin sheet, and resin container Download PDF

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TWI818000B
TWI818000B TW108110756A TW108110756A TWI818000B TW I818000 B TWI818000 B TW I818000B TW 108110756 A TW108110756 A TW 108110756A TW 108110756 A TW108110756 A TW 108110756A TW I818000 B TWI818000 B TW I818000B
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polypropylene
resin sheet
mass
less
polypropylene resin
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TW108110756A
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TW202035487A (en
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林道弘
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日商積水化成品工業股份有限公司
台灣積水化成品股份有限公司
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Abstract

An object of the present invention is to provide a polypropylene resin sheet and a resin container which are excellent in transparency and shock resistance.
The polypropylene resin sheet and the resin container are formed of polypropylene resin composition including homopolypropylene and random polypropylene that have a certain relationship in value of melt mass-flow rate.

Description

聚丙烯系樹脂片、聚丙烯系樹脂片的製造方法及樹脂製容器 Polypropylene resin sheet, method for producing polypropylene resin sheet, and resin container

本發明係有關於一種聚丙烯系樹脂片、聚丙烯系樹脂片的製造方法及樹脂製容器。 The present invention relates to a polypropylene resin sheet, a method for producing a polypropylene resin sheet, and a resin container.

以往係廣泛地使用具備容器本體及蓋子之樹脂製容器作為食品等之包裝用的容器,該容器本體係在上部設置有開口部,該蓋子係將前述開口部關閉。 Conventionally, a resin container including a container body and a lid has been widely used as a container for packaging food and the like. The container body is provided with an opening in the upper part, and the lid closes the opening.

此種樹脂製容器的容器本體,以往大多使用能夠大量生產的樹脂片製成形品。 Conventionally, the container body of such a resin container has been mostly formed of a resin sheet that can be mass-produced.

此種樹脂製容器的蓋子,以往係使用由聚合物塗層紙、透明的樹脂片等所構成之頂部密封材。 For the lid of such a resin container, a top sealing material composed of polymer-coated paper, a transparent resin sheet, or the like has conventionally been used.

亦即,已知有一種在此種樹脂製容器中,以將前述頂部密封材熱封在容器本體的開口部周緣而將食品密封在內部之方式構成者。 That is, there is known a resin container of this type in which the top sealing material is heat-sealed around the opening of the container body to seal the food inside.

在此種容器中,係被要求使內容物的視認性良好,而採用具 有優異的防霧性之透明的樹脂片作為頂部密封材(參照下述專利文獻1)。 In this type of container, it is required to ensure good visibility of the contents, and use specific A transparent resin sheet having excellent anti-fogging properties is used as a top sealing material (see Patent Document 1 below).

在此種容器中,係有在頂部密封材印刷商品名和內容物的說明、或印刷花紋和標誌記號之情形,在此種情況,因為難以通過頂部密封材而視認內容物,所以容器本體亦有被要求透明性之情形。 In such containers, the top sealing material may have the product name and description of the contents printed on it, or may have patterns or logos printed on it. In this case, it is difficult to see the contents through the top sealing material, so the container body also has Situations where transparency is required.

[先前技術文獻] [Prior technical literature] [專利文獻] [Patent Document]

[專利文獻1]日本特開2018-070191號公報 [Patent Document 1] Japanese Patent Application Publication No. 2018-070191

因為聚丙烯系樹脂片係具有優異的耐熱性,所以被廣泛地利用作為前述樹脂製容器的容器本體等的形成材料。 Since the polypropylene-based resin sheet has excellent heat resistance, it is widely used as a material for forming the container body of the above-mentioned resin container.

聚丙烯系樹脂片之聚丙烯系樹脂的結晶尺寸變大時透明性容易降低,即便為相同的結晶化度,存在多數微細的結晶者就發揮透明性之點而言係較容易成為有利者。 When the crystal size of the polypropylene resin in the polypropylene resin sheet increases, the transparency is likely to decrease. Even with the same degree of crystallization, those having many fine crystals are more likely to be advantageous in terms of exhibiting transparency.

因此,在如被要求透明性之用途,在構成聚丙烯系樹脂片之聚丙烯系樹脂組成物係有含有結晶核劑之情形。 Therefore, in applications where transparency is required, the polypropylene-based resin composition constituting the polypropylene-based resin sheet may contain a crystal nucleating agent.

但是在聚丙烯系樹脂片結晶微細化時,結晶在全體所佔之比率變高,致使柔軟性消失且難以充分地確保耐衝撃性。 However, when the crystals of the polypropylene-based resin sheet are refined, the proportion of the crystals in the entire sheet becomes high, resulting in loss of flexibility and difficulty in ensuring sufficient impact resistance.

因此,欲使用聚丙烯系樹脂片來構成樹脂製容器的容器本體時,係有難以兼具優異的透明性與優異的耐衝撃性之情形,而聚丙烯系樹脂片係被 要求必須兼具優異的透明性與優異的耐衝撃性。 Therefore, when a polypropylene-based resin sheet is used to constitute the container body of a resin container, it may be difficult to achieve both excellent transparency and excellent impact resistance, and the polypropylene-based resin sheet is It is required to have both excellent transparency and excellent impact resistance.

對聚丙烯系樹脂片要求優異的透明性及優異的耐衝撃性之兩者一事,不是只有在將聚丙烯系樹脂片利用作為樹脂製容器的構成材料之情況而已。 The polypropylene resin sheet is required to have both excellent transparency and excellent impact resistance, not only when the polypropylene resin sheet is used as a constituent material of a resin container.

在此種狀況,尚未發現使聚丙烯系樹脂片發揮優異的透明性與耐衝撃性之手段。 Under such circumstances, no means has been found to enable the polypropylene-based resin sheet to exhibit excellent transparency and impact resistance.

因此本發明之課題係滿足此種要求。 Therefore, the subject of the present invention is to satisfy this requirement.

為了解決上述課題,本發明係提供一種聚丙烯系樹脂片,其係由含有聚丙烯系樹脂之聚丙烯系樹脂組成物所構成之霧度為25%以下的聚丙烯系樹脂片,前述聚丙烯系樹脂組成物係含有均聚聚丙烯及無規聚丙烯,前述均聚聚丙烯在前述均聚聚丙烯與前述無規聚丙烯的總量所佔的比率為50質量%以上且95質量%以下,而且前述均聚聚丙烯在溫度230℃、荷重2.16kg所測定的熔體質量流動速率、與前述無規聚丙烯的前述熔體質量流動速率之差為0.6g/10min以上且6.0g/10min以下。 In order to solve the above problems, the present invention provides a polypropylene-based resin sheet, which is a polypropylene-based resin sheet composed of a polypropylene-based resin composition containing a polypropylene-based resin and has a haze of 25% or less. The aforementioned polypropylene-based resin sheet The resin composition contains homopolypropylene and atactic polypropylene, and the ratio of the homopolypropylene to the total amount of the homopolypropylene and the atactic polypropylene is 50 mass% or more and 95 mass% or less. , and the difference between the melt mass flow rate of the homopolypropylene measured at a temperature of 230°C and a load of 2.16kg and the melt mass flow rate of the atactic polypropylene is 0.6g/10min or more and 6.0g/10min the following.

為了解決上述課題,本發明係提供一種聚丙烯系樹脂片的製造方法,其係實施下列步驟而製造霧度為25%以下的聚丙烯系樹脂片,該聚丙烯系樹脂片的製造方法包含:混煉步驟,其係使用擠製機將含有聚丙烯系樹脂之聚丙烯系樹脂組成物邊加熱邊混煉而得到熔融混煉物;及擠製步驟,其係將前述熔融混煉物從安裝在前述擠製機之模具擠製成為薄片狀而得到聚丙烯系樹脂片;在前述混煉步驟所使用的前述聚丙烯系樹脂組成物,係含有均聚聚丙烯及無規聚丙烯,前述均聚聚丙烯在前述均聚聚丙烯 與前述無規聚丙烯的總量所佔的比率為50質量%以上且95質量%以下,而且前述均聚聚丙烯在溫度230℃、荷重2.16kg所測定的熔體質量流動速率、與前述無規聚丙烯的前述熔體質量流動速率之差為0.6g/10min以上且6.0g/10min以下。 In order to solve the above problems, the present invention provides a method for manufacturing a polypropylene resin sheet, which implements the following steps to manufacture a polypropylene resin sheet with a haze of 25% or less. The method for manufacturing a polypropylene resin sheet includes: The kneading step is to use an extruder to knead the polypropylene-based resin composition containing the polypropylene-based resin while heating to obtain a molten kneaded product; and the extrusion step is to convert the aforementioned molten kneaded product from the device The polypropylene resin sheet is obtained by extruding it into a thin sheet through the die of the extruder; the polypropylene resin composition used in the kneading step contains homopolymer polypropylene and random polypropylene. Polypropylene in the aforementioned homopolymer polypropylene The ratio to the total amount of the atactic polypropylene is 50 mass % or more and 95 mass % or less, and the melt mass flow rate of the homopolymer polypropylene measured at a temperature of 230°C and a load of 2.16 kg is not the same as the above. The difference in the melt mass flow rate of the conventional polypropylene is 0.6 g/10 min or more and 6.0 g/10 min or less.

為了解決上述課題,本發明係提供一種樹脂製容器,其具備在上部設置有開口部之容器本體,及將前述開口部關閉的蓋子,其中,前述容器本體及前述蓋子的至少一者係由霧度為25%以下的聚丙烯系樹脂片所構成,前述聚丙烯系樹脂片係由含有聚丙烯系樹脂之聚丙烯系樹脂組成物所構成,前述聚丙烯系樹脂組成物係含有均聚聚丙烯及無規聚丙烯,且在製成0.4mm的厚度的聚丙烯系樹脂片時藉由落錘衝撃試驗而測定的全吸收能量為1.0J以上,而且彎曲剛性為40gf.cm2/cm以上且100gf.cm2/cm以下。 In order to solve the above-mentioned problems, the present invention provides a resin container including a container body provided with an opening in the upper part, and a lid closing the opening, wherein at least one of the container body and the lid is made of mist. The polypropylene resin sheet is composed of a polypropylene resin composition containing a polypropylene resin, and the polypropylene resin composition contains a homopolymerized polypropylene. and random polypropylene, and when it is made into a polypropylene-based resin sheet with a thickness of 0.4mm, the total absorbed energy measured by the drop weight impact test is 1.0J or more, and the bending rigidity is 40gf. cm 2 /cm or more and 100gf. cm 2 /cm or less.

1‧‧‧樹脂製容器 1‧‧‧Resin container

10‧‧‧容器本體 10‧‧‧Container body

10a‧‧‧開口部 10a‧‧‧Opening part

10b‧‧‧底面部 10b‧‧‧Bottom face

10f‧‧‧凸緣部 10f‧‧‧Flange part

10w‧‧‧周側壁 10w‧‧‧Peripheral side wall

20‧‧‧蓋子 20‧‧‧Lid

100、100’‧‧‧聚丙烯系樹脂片 100, 100’‧‧‧polypropylene resin sheet

CL‧‧‧冷卻設備 CL‧‧‧Cooling Equipment

E1‧‧‧擠製機 E1‧‧‧Extruder

EX‧‧‧製造設備 EX‧‧‧Manufacturing Equipment

FD‧‧‧平模 FD‧‧‧Flat mold

HP‧‧‧料斗 HP‧‧‧Hopper

MD‧‧‧擠製方向 MD‧‧‧Extrusion direction

R0‧‧‧輥筒 R0‧‧‧Roller

R1‧‧‧第1冷卻輥筒(輥筒) R1‧‧‧No.1 cooling roller (roller)

R2‧‧‧第2冷卻輥筒 R2‧‧‧2nd cooling roller

TD‧‧‧與流動方向垂直的方向 TD‧‧‧Direction perpendicular to the flow direction

X‧‧‧收容物 X‧‧‧Contained objects

第1圖係容器本體及蓋子之樹脂製容器的概略斜視圖。 Figure 1 is a schematic perspective view of a resin container with a container body and a lid.

第2圖係樹脂製容器的概略剖面圖(第1圖的A-A’線箭視剖面圖)。 Figure 2 is a schematic cross-sectional view of the resin container (arrow cross-sectional view along line A-A' in Figure 1).

第3圖係表示聚丙烯系樹脂片的製造設備之概略正面圖。 Figure 3 is a schematic front view showing a polypropylene resin sheet manufacturing equipment.

第4圖係表示聚丙烯系樹脂片的製造設備之概略上面圖。 Figure 4 is a schematic top view showing the manufacturing equipment of the polypropylene resin sheet.

以下,邊參照圖示邊說明本發明的實施形態。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.

以下,係將利用聚丙烯系樹脂片作為樹脂製容器的容器本體的構成材料時作為例子,而說明本發明的實施形態。 Hereinafter, embodiments of the present invention will be described using a polypropylene-based resin sheet as a constituent material of the container body of a resin container as an example.

首先,邊參照第1圖、第2圖邊說明樹脂製容器。 First, a resin container will be described with reference to Figures 1 and 2 .

如該等圖示顯示,樹脂製容器1係由樹脂製的容器本體10及蓋子20所構成,該容器本體10係收容食品等的收容物X,而該蓋子係將前述收容物X密封。 As shown in these figures, the resin container 1 is composed of a resin container body 10 that stores a stored object X such as food, and a lid 20 that seals the stored object X.

更詳言之,樹脂製容器1係具備容器本體10及蓋子20,該容器本體10係在上部設置有開口部10a;而該蓋子20係將前述開口部10a關閉;前述容器本體10及前述蓋子20之中,前述容器本體10係由聚丙烯系樹脂片所構成。 More specifically, the resin container 1 is provided with a container body 10 and a lid 20. The container body 10 is provided with an opening 10a at the upper part; and the lid 20 closes the opening 10a; the container body 10 and the lid 20 are provided. 20, the container body 10 is made of a polypropylene resin sheet.

在本實施形態之前述容器本體10,係將平坦狀態的聚丙烯系樹脂片進行熱成形而成為三維構造之成形品。 In the present embodiment, the container body 10 described above is a molded product having a three-dimensional structure by thermoforming a flat polypropylene resin sheet.

前述容器本體10係能夠藉由真空成形、壓空成形、真空/壓空成形、多模成形、壓縮成形等之熱成形而製造之成形品。 The container body 10 is a molded product that can be manufactured by thermoforming such as vacuum forming, pressure forming, vacuum/pressure forming, multi-mold forming, compression forming, or the like.

在本實施形態之前述蓋子20,係使用平坦狀態的頂部密封材而構成。 In this embodiment, the lid 20 is configured using a flat top sealing material.

在本實施形態之前述蓋子20,係使用前述頂部密封材而構成,前述頂部密封材係對前述容器本體10施行熱封而接著在容器本體10。 In this embodiment, the lid 20 is constructed using the top sealing material, and the top sealing material is heat-sealed to the container body 10 and then attached to the container body 10 .

前述容器本體10係具備大略正方形的底面部10b、及沿著該底面部10b的外周而立設之周側壁10w,在前述底面部10b與前述周側壁10w的內側係成為用以收容前述收容物X之大略長方體形狀的收容空間。 The container body 10 is provided with a substantially square bottom surface 10b and a peripheral side wall 10w standing along the outer periphery of the bottom surface 10b. The inner side of the bottom surface 10b and the peripheral side wall 10w is used to store the storage object X. A roughly rectangular-shaped storage space.

前述容器本體10的前述開口部10a,係藉由前述周側壁10w的上端緣而以輪廓形狀成為正方形的方式劃定。 The opening 10a of the container body 10 is defined by the upper edge of the peripheral side wall 10w so that its outline shape becomes a square.

前述容器本體10係具有從前述周側壁10w的上端部往外側延伸之凸緣部10f。 The container body 10 has a flange portion 10f extending outward from the upper end portion of the peripheral side wall 10w.

該凸緣部10f係以將前述開口部10a包圍的方式設置,且以成為大略一定寬度而將前述開口部10a圍繞的形式設置。 The flange portion 10f is provided to surround the opening 10a and has a substantially constant width to surround the opening 10a.

因而,在藉由凸緣部10f的外緣而被劃定之容器本體10的俯視之輪廓線,係成為比前述開口部10a更大一些的正方形。 Therefore, the outline of the container body 10 in plan view defined by the outer edge of the flange portion 10f becomes a square that is larger than the opening 10a.

前述蓋子20係使用對應凸緣部10f的外緣形狀之形狀的頂部密封材而構成,且在前述凸緣部10f的外緣與頂部密封材的外緣為一致的狀態下被安裝在容器本體10。 The lid 20 is constructed using a top sealing material having a shape corresponding to the outer edge shape of the flange portion 10f, and is attached to the container body in a state where the outer edge of the flange portion 10f and the outer edge of the top sealing material are aligned. 10.

更詳言之,前述蓋子20係藉由將頂部密封材的外周部熱接著在前述凸緣部10f的上面,而在將前述開口部10a關閉的狀態下被安裝在容器本體10。 More specifically, the lid 20 is attached to the container body 10 in a state in which the opening 10a is closed by thermally bonding the outer peripheral portion of the top sealing material to the upper surface of the flange portion 10f.

其次,說明構成前述容器本體10之聚丙烯系樹脂片。 Next, the polypropylene resin sheet constituting the container body 10 will be described.

前述容器本體10的形成,係使用由含有聚丙烯系樹脂之聚丙烯系樹脂組成物所構成之單層的聚丙烯系樹脂片。 The container body 10 is formed by using a single-layer polypropylene resin sheet composed of a polypropylene resin composition containing polypropylene resin.

該聚丙烯系樹脂片亦可經施行防霧處理、脫模處理、抗菌處理等表面處理。 The polypropylene resin sheet may also be subjected to surface treatments such as anti-fog treatment, mold release treatment, and antibacterial treatment.

考慮藉由熱成形等而製造成形品時之作業性,本實施形態的聚丙烯系樹脂片係通常具有0.05mm以上且0.8mm以下的厚度。 Considering the workability when manufacturing a molded article by thermoforming or the like, the polypropylene-based resin sheet of this embodiment usually has a thickness of 0.05 mm or more and 0.8 mm or less.

聚丙烯系樹脂片的厚度係以0.7mm以下為佳,以0.6mm以下為較佳, 以0.5mm以下為特佳。 The thickness of the polypropylene resin sheet is preferably 0.7mm or less, and more preferably 0.6mm or less. 0.5mm or less is particularly preferred.

聚丙烯系樹脂片的厚度係以0.10mm以上為佳,以0.15mm以上為較佳,以0.20mm以上為更佳。 The thickness of the polypropylene resin sheet is preferably 0.10 mm or more, more preferably 0.15 mm or more, and more preferably 0.20 mm or more.

在本實施形態,就容器本體10而言亦以具有如上述的厚度為佳。 In this embodiment, it is also preferable that the container body 10 has the thickness as described above.

在形成成形品之前的平坦狀態下,聚丙烯系樹脂片的厚度係藉由隨意選擇的複數處(例如10處)的測定值之算術平均值而求取。 The thickness of the polypropylene-based resin sheet in the flat state before forming the molded article is determined by the arithmetic mean of the measured values at a plurality of arbitrarily selected locations (for example, 10 locations).

針對容器本體10的厚度,亦能夠同樣地進行而求取。 The thickness of the container body 10 can also be obtained in the same manner.

亦即,在本實施形態之聚丙烯系樹脂片的厚度和容器本體10的厚度係意味著平均厚度。 That is, the thickness of the polypropylene resin sheet and the thickness of the container body 10 in this embodiment mean the average thickness.

前述聚丙烯系樹脂片和前述容器本體10的厚度,係例如能夠使用測微計而求取。 The thickness of the polypropylene resin sheet and the container body 10 can be determined using a micrometer, for example.

但是,測定係將試料在溫度20±2℃、相對濕度65±5%的環境下進行狀態調節24小時以上之後,在同樣的試驗環境(溫度20±2℃、相對濕度65±5%)實施。 However, the measurement is performed in the same test environment (temperature 20±2°C, relative humidity 65±5%) after conditioning the sample for more than 24 hours. .

在前述容器本體,在一面形成有肋條等細小的凹凸時,測微計係有難以進行正確的測定之情況。 When the container body has fine irregularities such as ribs formed on one surface, it may be difficult for a micrometer to perform accurate measurement.

作為求取聚丙烯系樹脂片和前述容器本體10的平均厚度之其它方法,例如可舉出將聚丙烯系樹脂片切割成為預定大小而製造測定用試料,藉由該測定用試料的面積(A:cm2)、質量(M:g)、及該聚丙烯系樹脂片的密度(ρ:g/cm3)而求取之方法。 As another method for determining the average thickness of the polypropylene resin sheet and the container body 10, for example, the polypropylene resin sheet is cut into a predetermined size to produce a measurement sample, and the area of the measurement sample (A : cm 2 ), mass (M: g), and density (ρ: g/cm 3 ) of the polypropylene resin sheet.

具體而言,聚丙烯系樹脂片的平均厚度(t:mm)係能夠依照下述式(1) 而求取。 Specifically, the average thickness (t: mm) of the polypropylene-based resin sheet can be calculated according to the following formula (1) And ask for it.

t=[(M/ρ)/A]×10...(1) t=[(M/ρ)/A]×10. . . (1)

針對聚丙烯系樹脂片的密度,係能夠藉由依據JIS K7112:1999「塑膠-非發泡塑膠的密度及比重久測定方法」的A法(水中取代法)等而求取。 The density of the polypropylene-based resin sheet can be determined by method A (water substitution method) based on JIS K7112: 1999 "Plastics - Determination of density and specific gravity of non-foamed plastics".

針對容器本體10,亦能夠藉由求取外表面的表面積、質量及密度而與聚丙烯系樹脂片同樣地求取平均厚度。 Regarding the container body 10 , the average thickness can also be determined in the same manner as the polypropylene resin sheet by determining the surface area, mass, and density of the outer surface.

容器本體10的表面積係能夠使用三維測定器等而求取。 The surface area of the container body 10 can be determined using a three-dimensional measuring instrument or the like.

就對形成具有優異的透明性之容器本體10為有利而言,本實施形態的聚丙烯系樹脂片之霧度值為25%以下。 In order to be advantageous in forming the container body 10 with excellent transparency, the haze value of the polypropylene resin sheet of this embodiment is 25% or less.

該霧度係以23%以下為佳,以21%以下為較佳,以19%以下為更佳,以17%以下為特佳。 The haze is preferably 23% or less, more preferably 21% or less, more preferably 19% or less, and particularly preferably 17% or less.

又,欲將聚丙烯系樹脂片的霧度過度地降低時,聚丙烯系樹脂片的製造方法係有被限定為特殊者之虞。 In addition, when the haze of the polypropylene-based resin sheet is to be excessively reduced, the manufacturing method of the polypropylene-based resin sheet may be limited to a special one.

因而,就容易製造聚丙烯系樹脂片而言,前述霧度係以1%以上為佳,以5%以上為較佳。 Therefore, in order to easily produce a polypropylene-based resin sheet, the haze is preferably 1% or more, and more preferably 5% or more.

較佳為不僅是成形前的聚丙烯系樹脂片,而且成為容器本體10的狀態之後在該容器本體10也具備如上述的霧度之值。 It is preferable that not only the polypropylene-based resin sheet before molding but also the container body 10 after being in the state of the container body 10 have the above-mentioned haze value.

較佳為聚丙烯系樹脂片和容器本體在前述較佳平均厚度的範圍內之全部顯示如上述的霧度。 It is preferable that the entirety of the polypropylene resin sheet and the container body exhibit the above-mentioned haze within the above-mentioned preferable average thickness range.

聚丙烯系樹脂片和容器本體10等的霧度,係能夠依據JIS K7136:2000「塑膠-透明材料的霧度之求取方法」記載的方法而測定。 The haze of the polypropylene resin sheet, the container body 10, etc. can be measured according to the method described in JIS K7136: 2000 "Plastics - Method for determining haze of transparent materials."

具體而言,前述霧度係能夠使用從聚丙烯系樹脂片、容器本體10等採取之1邊50mm的正方形試料而測定。 Specifically, the haze can be measured using a square sample with one side of 50 mm taken from a polypropylene resin sheet, the container body 10, or the like.

測定係使用霧度計量器HM-150型(股份公司村上色彩技術研究所製)且使用前述試料及光源(D65)而實施。 The measurement was performed using the haze meter HM-150 type (manufactured by Murakami Color Technology Research Institute, Inc.) and using the aforementioned sample and light source (D65).

此時的試驗次數係原則上設為3次且將其算術平均值作為霧度之值。 In principle, the number of tests at this time is set to three and the arithmetic mean is used as the haze value.

但是,測定係將試料在溫度20±2℃、相對濕度65±5%的環境下進行狀態調節24小時以上之後,在同樣的試驗環境(溫度20±2℃、相對濕度65±5%)實施。 However, the measurement is performed in the same test environment (temperature 20±2°C, relative humidity 65±5%) after conditioning the sample for more than 24 hours. .

而且霧度係能夠依照下述式(2)而求取。 Moreover, the haze system can be obtained according to the following formula (2).

霧度(%)={(τ4/τ2)-τ3(τ2/τ1)}×100...(2) Haze (%)={(τ4/τ2)-τ3(τ2/τ1)}×100. . . (2)

在此式(1)中的各記號的意思係如以下。 The meanings of each symbol in this formula (1) are as follows.

τ1:入射光的光束 τ1: Beam of incident light

τ2:透射試片後的全光束 τ2: Full beam after transmitting the test piece

τ3:在裝置擴散後的全光束 τ3: Full beam after device diffusion

τ4:在裝置及試片擴散後的全光束 τ4: Full beam after diffusion by device and test piece

聚丙烯系樹脂片和容器本體10較佳為不僅是如上述具有優異的透明性,亦具有優異的耐衝撃性。 The polypropylene resin sheet and the container body 10 preferably have not only excellent transparency as mentioned above, but also excellent impact resistance.

具體而言,聚丙烯系樹脂片及容器本體10係在實施落錘衝撃試驗時所得到的全吸收能量之值,以1.0J以上為佳。 Specifically, the value of the total absorbed energy obtained when the polypropylene resin sheet and the container body 10 are subjected to a drop weight impact test is preferably 1.0 J or more.

聚丙烯系樹脂片和容器本體10的前述全吸收能量之值係以1.2J以上為較佳,以1.5J以上為更佳,以2.0J以上為特佳。 The value of the total absorbed energy of the polypropylene resin sheet and the container body 10 is preferably 1.2 J or more, more preferably 1.5 J or more, and particularly preferably 2.0 J or more.

又,聚丙烯系樹脂片和容器本體10的全吸收能量,係通常為4J以下 之值。 In addition, the total energy absorbed by the polypropylene resin sheet and the container body 10 is usually 4J or less. value.

較佳為聚丙烯系樹脂片和容器本體在前述較佳平均厚度的範圍內的全部顯示如上述的全吸收能量。 It is preferable that the entirety of the polypropylene-based resin sheet and the container body exhibit the above-described total energy absorption within the above-mentioned preferable average thickness range.

前述全吸收能量係能夠使用如以下顯示的方法而求取。 The aforementioned total absorbed energy system can be obtained using the method shown below.

(全吸收能量的測定方法) (Measurement method of total absorbed energy)

全吸收能量係能夠藉由依據ASTM D-3763-92(Standard Test Method for High Speed Puncture Properties of Plastics Using Load and Displacement Sensors(採用重量及位移傳感器之塑膠的高速穿刺特性的標準測試方法)之落錘衝撃試驗且如以下方式進行而求取。 The fully absorbed energy system can be absorbed by the falling weight in accordance with ASTM D-3763-92 (Standard Test Method for High Speed Puncture Properties of Plastics Using Load and Displacement Sensors) The impact test is performed as follows.

亦即,試片的尺寸係設為長度100mm×寬度100mm×原厚度(藉由擠製成形而得到的薄片之厚度)。 That is, the size of the test piece is set to length 100 mm×width 100 mm×original thickness (thickness of the sheet obtained by extrusion molding).

使用落錘衝撃試驗裝置CEAST9350(CEAST公司製)、計量軟體CEAST VIEW測定落錘將試片穿孔時的全吸收能量(J)。 The total absorbed energy (J) when the drop weight perforates the test piece was measured using the falling weight impact test device CEAST9350 (manufactured by CEAST Corporation) and the measurement software CEAST VIEW.

試驗條件等係通常如以下。 The test conditions etc. are usually as follows.

試驗速度:1.75m/sec、落錘荷重:1.926kg、無追加重錘、試片支撐間距

Figure 108110756-A0202-12-0010-15
76mm、使用的錘頭為壓電式4.5kN檢測儀表化錘頭且前端形狀為
Figure 108110756-A0202-12-0010-16
12.7mm半球型的錘頭插件、落下高度(止動器位置):56cm、落錘距離:12cm、試驗溫度23℃、試驗數:6。 Test speed: 1.75m/sec, falling weight load: 1.926kg, no additional weight, test piece support spacing
Figure 108110756-A0202-12-0010-15
76mm, the hammer head used is a piezoelectric 4.5kN detection instrumented hammer head and the shape of the front end is
Figure 108110756-A0202-12-0010-16
12.7mm hemispherical hammer head insert, drop height (stopper position): 56cm, drop distance: 12cm, test temperature 23°C, number of tests: 6.

試驗溫度23℃的試片,係在測定之前依照ASTM D618-13的ProcedureA且在23±2℃、相對濕度50±10%的環境下進行狀態調整40小時以上之後,在相同的標準環境下進行測定。 The test piece with a test temperature of 23°C was performed in accordance with Procedure A of ASTM D618-13 and was conditioned for more than 40 hours in an environment of 23±2°C and a relative humidity of 50±10% before measurement, and then conducted in the same standard environment. Determination.

全吸收能量係能夠將測定所得到的圖表的積分值藉由該裝 置的自動計算而算出。 The total absorbed energy system allows the integrated value of the graph obtained by the measurement to be Calculated by automatic calculation of settings.

就能夠使由該聚丙烯系樹脂片所構成之成形品發揮優異的強度而言,在本實施形態之聚丙烯系樹脂片係以在前述的較佳平均厚度範圍內具有預定彎曲剛性為佳。 In order to enable the molded article composed of the polypropylene resin sheet to exhibit excellent strength, the polypropylene resin sheet in this embodiment preferably has a predetermined bending rigidity within the above-mentioned preferred average thickness range.

在本實施形態之聚丙烯系樹脂片,係例如使用由KATO TECH公司以商品名「KES FB2-L」市售的彎曲試驗機等所測定之彎曲剛性(特性值B),係以顯示40gf.cm2/cm以上的值為佳。 In the polypropylene-based resin sheet of this embodiment, the bending rigidity (characteristic value B) measured using, for example, a bending testing machine commercially available under the trade name "KES FB2-L" from KATO TECH Co., Ltd. showed 40 gf. Values above cm 2 /cm are preferred.

該彎曲剛性之值係以45gf.cm2/cm以上為佳,以50gf.cm2/cm以上為特佳。 The value of the bending rigidity is based on 45gf. cm 2 /cm or above is preferred, with 50gf. cm 2 /cm or above is particularly good.

該彎曲剛性之值係通常100gf.cm2/cm以下。 The value of this bending rigidity is usually 100gf. cm 2 /cm or less.

彎曲剛性係例如能夠如以下進行測定。 The bending rigidity can be measured as follows, for example.

(彎曲剛性的測定方法) (Measurement method of bending rigidity)

在聚丙烯系樹脂片隨意地選擇之3處,切取縱向100mm×橫向10mm的長方形試片。 Cut out a rectangular test piece with a length of 100 mm and a width of 10 mm at three randomly selected locations on the polypropylene resin sheet.

又,3片試片係設成使其縱向成為相同方向且為對聚丙烯系樹脂片在擠製時之樹脂的吐出方向(MD方向)呈垂直方向(TD方向)。 In addition, the three test pieces were set so that their longitudinal directions were in the same direction and in a direction perpendicular to the resin discharge direction (MD direction) during extrusion of the polypropylene resin sheet (TD direction).

準備彎曲試驗機(例如KATO TECH公司、大型純彎曲試驗機、商品名「KES FB2-L」),藉由固定臂及可動臂將各試片的縱向兩端部之各者以臂間距離40mm之方式予以把持,且在曲率0.5cm-1、彎曲速度0.1cm-1/sec的測定條件下將可動臂往試片的表面方向及背面方向各自移動各一次,而且從所偵測到的轉矩算出各試片的彎曲剛性(特性值B),將各試片的彎曲剛性(特性值B)之各自的算術平均值作為聚丙烯系樹脂片的彎曲剛性。 Prepare a bending testing machine (for example, KATO TECH Co., Ltd., large-scale pure bending testing machine, trade name "KES FB2-L"), and use a fixed arm and a movable arm to position each of the longitudinal ends of each test piece with an inter-arm distance of 40mm. The movable arm is controlled in a certain way, and under the measurement conditions of curvature 0.5cm -1 and bending speed 0.1cm -1 /sec, the movable arm is moved once each to the surface direction and back direction of the test piece, and from the detected rotation The bending rigidity (characteristic value B) of each test piece was calculated using the moment, and the arithmetic mean value of the bending rigidity (characteristic value B) of each test piece was taken as the bending rigidity of the polypropylene-based resin sheet.

前述容器本體10為複雜的形狀而難以精度良好地測定彎曲剛性及全吸收能量時,亦可將容器本體10進行熱壓、或使用構成容器本體之聚丙烯系樹脂組成物製造預定厚度(例如0.4mm)的聚丙烯系樹脂片,且將該聚丙烯系樹脂片作為測定試料而求取前述容器本體10的彎曲剛性和全吸收能量。 When the container body 10 has a complicated shape and it is difficult to accurately measure the bending rigidity and total energy absorption, the container body 10 can also be hot-pressed, or the polypropylene resin composition constituting the container body can be manufactured to a predetermined thickness (for example, 0.4 mm) polypropylene resin sheet, and using this polypropylene resin sheet as a measurement sample, the bending rigidity and total absorbed energy of the container body 10 were determined.

本實施形態的前述容器本體10較佳為在此種聚丙烯系樹脂片的測定中,針對如上述的彎曲剛性和全吸收能量亦顯示較佳特性值。 It is preferable that the container body 10 of this embodiment also exhibits good characteristic values in terms of the above-mentioned bending rigidity and total absorbed energy in the measurement of such a polypropylene-based resin sheet.

就使聚丙烯系樹脂片和容器本體10發揮如上述的特性而言,較佳為調整成在使聚丙烯系樹脂片和容器本體10之聚丙烯的結晶微細化之同時,使結晶在聚丙烯系樹脂片和容器本體10的存在比率不過度地變高。 In order for the polypropylene-based resin sheet and the container body 10 to exhibit the above-described characteristics, it is preferable to adjust the polypropylene-based resin sheet and the container body 10 so that the crystals of the polypropylene in the polypropylene-based resin sheet and the container body 10 are refined and the crystals are formed in the polypropylene. The ratio of the resin sheet to the container body 10 is not excessively high.

就使聚丙烯系樹脂片和容器本體10具備如剛性的強度而言,在構成聚丙烯系樹脂片和容器本體10之聚丙烯系樹脂組成物中,當作基質聚合物之聚丙烯系樹脂係以均聚聚丙烯為佳。 In order to provide the polypropylene-based resin sheet and the container body 10 with strength such as rigidity, among the polypropylene-based resin compositions constituting the polypropylene-based resin sheet and the container body 10, the polypropylene-based resin serving as the matrix polymer Homopolymer polypropylene is preferred.

但是,在聚丙烯系樹脂組成物所含有的聚丙烯系樹脂係只有均聚聚丙烯時,在製造聚丙烯系樹脂片和容器本體10之過程,有結晶比率太高而難以發揮良好的耐衝撃性之情形。 However, when the polypropylene-based resin contained in the polypropylene-based resin composition is only homopolymerized polypropylene, the crystallization ratio in the process of manufacturing the polypropylene-based resin sheet and the container body 10 may be too high, making it difficult to exhibit good impact resistance. sexual situation.

因此在前述聚丙烯系樹脂組成物,係以同時含有均聚聚丙烯及無規聚丙烯為佳。 Therefore, the polypropylene-based resin composition preferably contains both homopolypropylene and atactic polypropylene.

亦即在本實施形態,構成前述聚丙烯系樹脂片和前述容器本體10之聚丙烯系樹脂組成物,係含有均聚聚丙烯及無規聚丙烯作為聚丙烯系樹脂。 That is, in this embodiment, the polypropylene resin composition constituting the polypropylene resin sheet and the container body 10 contains homopolypropylene and random polypropylene as the polypropylene resin.

前述均聚聚丙烯在聚丙烯系樹脂組成物之前述均聚聚丙烯 的前述無規聚丙烯的總量所佔之比率,係以50質量%以上為佳。 The aforementioned homopolymerized polypropylene precedes the polypropylene-based resin composition. The proportion of the total amount of the aforementioned random polypropylene is preferably 50% by mass or more.

前述均聚聚丙烯的前述比率係以55質量%以上為較佳,以60質量%以上為更佳,以65質量%以上為特佳。 The aforementioned ratio of the homopolymerized polypropylene is preferably 55 mass% or more, more preferably 60 mass% or more, and particularly preferably 65 mass% or more.

前述均聚聚丙烯的前述比率係以95質量%以下為佳,以90質量%以下為較佳,以85質量%以下為更佳,以80質量%以下為特佳。 The ratio of the homopolypropylene is preferably 95 mass% or less, more preferably 90 mass% or less, more preferably 85 mass% or less, and particularly preferably 80 mass% or less.

藉由前述比率為上述範圍內,能夠得到具有優異的耐衝撃性、透明性、彎曲剛性之聚丙烯系樹脂片。 When the ratio is within the above range, a polypropylene resin sheet having excellent impact resistance, transparency, and bending rigidity can be obtained.

前述聚丙烯系樹脂組成物係除了均聚聚丙烯及無規聚丙烯以外而含有另外的聚合物時,因為聚丙烯系樹脂片和容器本體10有無法發揮充分良好的透明性之可能性,故另外的聚合物的含量係以5質量%以下為佳。 When the aforementioned polypropylene-based resin composition contains another polymer in addition to homopolypropylene and random polypropylene, the polypropylene-based resin sheet and the container body 10 may not be able to exhibit sufficiently good transparency. The content of the other polymer is preferably 5% by mass or less.

另外的聚合物的前述含量係以4質量%以下為較佳,以3質量%以下為更佳。 The content of the other polymer is preferably 4% by mass or less, more preferably 3% by mass or less.

前述聚丙烯系樹脂組成物係除了均聚聚丙烯及無規聚丙烯以外,以不含有另外的聚合物為特佳。 It is particularly preferred that the polypropylene-based resin composition contains no other polymers other than homopolypropylene and atactic polypropylene.

就使前述聚丙烯系樹脂片和前述容器本體10發揮優異的透明性和優異的耐衝撃性而言,前述無規聚丙烯係對前述均聚聚丙烯以在良好的分散狀態下存在為佳。 In order for the polypropylene-based resin sheet and the container body 10 to exhibit excellent transparency and excellent impact resistance, it is preferred that the random polypropylene-based resin and the homopolymerized polypropylene exist in a good dispersed state.

就使前述無規聚丙烯成為良好的分散狀態而言,前述無規聚丙烯的熔體質量流動速率與前述均聚聚丙烯的熔體質量流動速率係以具有預定關係性為佳。 In order to bring the random polypropylene into a good dispersion state, it is preferable that the melt mass flow rate of the random polypropylene and the melt mass flow rate of the homopolypropylene have a predetermined relationship.

具體而言,前述均聚聚丙烯在溫度230℃、荷重2.16kg的條件下所測 定之熔體質量流動速率與前述無規聚丙烯的前述熔體質量流動速率之差,係以0.6g/10min以上且6.0g/10min以下為佳。 Specifically, the aforementioned homopolymer polypropylene was measured at a temperature of 230°C and a load of 2.16kg. The difference between the specified melt mass flow rate and the aforementioned melt mass flow rate of the atactic polypropylene is preferably 0.6g/10min or more and 6.0g/10min or less.

藉由熔體質量流動速率之差為上述範圍內,能夠得到具有優異的耐衝撃性、透明性、彎曲剛性之聚丙烯系樹脂片。 When the difference in melt mass flow rates is within the above range, a polypropylene resin sheet having excellent impact resistance, transparency, and bending rigidity can be obtained.

又,所謂「熔體質量流動速率之差」,係意味著均聚聚丙烯的熔體質量流動速率與無規聚丙烯的熔體質量流動速率之差的絕對值,且意味著兩者之中從數值較高者減去數值較低者時之差。 In addition, the so-called "difference in melt mass flow rate" means the absolute value of the difference between the melt mass flow rate of homopolypropylene and the melt mass flow rate of atactic polypropylene, and means which of the two The difference when a lower value is subtracted from a higher value.

亦即,係意味著熔體質量流動速率之差為0.6g/10min以上且6.0g/10min以下時,將均聚聚丙烯的熔體質量流動速率設為「MFRh(g/10min)」,將無規聚丙烯的熔體質量流動速率設為「MFRr(g/10min)」時,滿足下述式(3)。 That is, it means that when the difference in melt mass flow rate is 0.6g/10min or more and 6.0g/10min or less, the melt mass flow rate of homopolypropylene is set to "MFRh (g/10min)", and When the melt mass flow rate of atactic polypropylene is "MFRr (g/10min)", the following formula (3) is satisfied.

0.6≦|MFRh-MFRr|≦6.0...(3) 0.6≦|MFRh-MFRr|≦6.0. . . (3)

熔體質量流動速率之差係以0.7g/10min以上為較佳,以0.8g/10min以上為更佳。 The difference in melt mass flow rate is preferably 0.7g/10min or more, and more preferably 0.8g/10min or more.

熔體質量流動速率之差係以5.5g/10min以下為較佳,以5.0g/10min以下為更佳,以4.5g/10min以下為特佳。 The difference in melt mass flow rate is preferably 5.5g/10min or less, more preferably 5.0g/10min or less, and particularly preferably 4.5g/10min or less.

均聚聚丙烯的前述熔體質量流動速率(MFRh)係以1.0g/10min以上為佳,以1.5g/10min以上為較佳。 The melt mass flow rate (MFRh) of the homopolymer polypropylene is preferably 1.0g/10min or more, and more preferably 1.5g/10min or more.

均聚聚丙烯的前述熔體質量流動速率(MFRh)係以5.0g/10min以下為佳,以4.0g/10min以下為較佳。 The melt mass flow rate (MFRh) of the homopolymer polypropylene is preferably 5.0g/10min or less, and more preferably 4.0g/10min or less.

熔體質量流動速率(MFR)係能夠使用股份公司東洋精機製作所製的SEMI-AUTO MELT INDEXER2A且依據JIS K7210:1999「塑 膠-熱塑性塑膠的熔體質量流動速率(MFR)及熔體體積流動速率(melt volume-flow rate:MVR)的試驗方法」B法記載的「b)測定活塞移動預定距離的時間之方法」而測定。 The melt mass flow rate (MFR) system can use SEMI-AUTO MELT INDEXER2A manufactured by Toyo Seiki Co., Ltd. and is based on JIS K7210: 1999 "Plastic Glue - Test method for melt mass flow rate (MFR) and melt volume flow rate (melt volume-flow rate: MVR) of thermoplastics" "b) Method for measuring the time for the piston to move a predetermined distance" described in Method B Determination.

此時,測定條件係原則上如以下設定。 At this time, the measurement conditions are set as follows in principle.

試料量:3至8g Sample amount: 3 to 8g

預熱時間:270秒 Warm-up time: 270 seconds

負荷保持:30秒 Load holding: 30 seconds

試驗溫度:230℃ Test temperature: 230℃

試驗荷重:21.18N Test load: 21.18N

又,試料的試驗次數係設為3次且將其平均設為熔體質量流動速率(g/10min)之值。 In addition, the number of times of testing of the sample was set to three times, and the average was set as the value of the melt mass flow rate (g/10 min).

在本實施形態,沒有必要單獨使用1種均聚聚丙烯,亦可將2種以上的均聚聚丙烯摻合而使用。 In this embodiment, it is not necessary to use one type of homopolypropylene alone, and two or more types of homopolypropylene may be blended and used.

在聚丙烯系樹脂組成物含有複數種均聚聚丙烯時,均聚聚丙烯的熔體質量流動速率(MFRh)係能夠算出質量比率的平均值而決定。 When the polypropylene-based resin composition contains a plurality of types of homopolymerized polypropylene, the melt mass flow rate (MFRh) of the homopolymerized polypropylene can be determined by calculating the average value of the mass ratios.

例如在聚丙烯系樹脂組成物係含有n種類的均聚聚丙烯時,將第1均聚聚丙烯在均聚聚丙烯的總量所佔的質量比率設為「a1(%)」,將第1均聚聚丙烯的熔體質量流動速率設為「MFRh1(g/10min)」,將第2均聚聚丙烯的質量比率設為「a2(%)」,將第2均聚聚丙烯的熔體質量流動速率設為「MFRh2(g/10min)」,將第n均聚聚丙烯的質量比率設為「an(%)」,將第n均聚聚丙烯的熔體質量流動速率設為「MFRhn(g/10min)」,均聚聚丙烯的熔體質量流動速率(MFRh)係能夠依照下述式而求取。 For example, when the polypropylene-based resin composition contains n types of homopolymerized polypropylene, let the mass ratio of the first homopolymerized polypropylene in the total amount of homopolymerized polypropylene be "a1 (%)", and let The melt mass flow rate of 1st homopolymerized polypropylene is set to "MFRh1 (g/10min)", the mass ratio of the 2nd homopolymerized polypropylene is set to "a2 (%)", and the melt mass flow rate of the 2nd homopolymerized polypropylene is set to "a2 (%)". The bulk mass flow rate is set to "MFRh2 (g/10min)", the mass ratio of the nth homopolypropylene is set to "an (%)", and the melt mass flow rate of the nth homopolypropylene is set to " MFRhn (g/10min)", the melt mass flow rate (MFRh) of homopolymer polypropylene can be determined according to the following formula.

MFRh=[MFRh1×a1+MFRh2×a2+...MFRhn×an]/100 MFRh=[MFRh1×a1+MFRh2×a2+. . . MFRhn×an]/100

沒有必要使聚丙烯系樹脂組成物含有單獨種類,不僅是均聚聚丙烯,針對無規聚丙烯亦相同。 There is no need to include a separate type of polypropylene-based resin composition, and the same applies not only to homopolymerized polypropylene but also to atactic polypropylene.

在聚丙烯系樹脂組成物含有n種類的無規聚丙烯時,將第1無規聚丙烯在無規聚丙烯的總量所佔的質量比率設為「b1(%)」,將第1無規聚丙烯的熔體質量流動速率設為「MFRr1(g/10min)」,將第2無規聚丙烯的質量比率設為「b2(%)」,將第2無規聚丙烯的熔體質量流動速率設為「MFRr2(g/10min)」,將第n無規聚丙烯的質量比率設為「bn(%)」,將第n無規聚丙烯的熔體質量流動速率設為「MFRrn(g/10min)」時,無規聚丙烯的熔體質量流動速率(MFRr)係能夠依照下述式而求取。 When the polypropylene-based resin composition contains n types of random polypropylene, let the mass ratio of the first random polypropylene in the total amount of random polypropylene be "b1 (%)", and let the first random polypropylene be "b1 (%)". Let the melt mass flow rate of regular polypropylene be "MFRr1 (g/10min)", let the mass ratio of the second atactic polypropylene be "b2 (%)", and let the melt mass of the second atactic polypropylene The flow rate is set to "MFRr2 (g/10min)", the mass ratio of the nth random polypropylene is set to "bn(%)", and the melt mass flow rate of the nth random polypropylene is set to "MFRrn( g/10min)", the melt mass flow rate (MFRr) of atactic polypropylene can be obtained according to the following formula.

MFRr=[MFRr1×b1+MFRr2×b2+...MFRrn×bn]/100 MFRr=[MFRr1×b1+MFRr2×b2+. . . MFRrn×bn]/100

作為前述無規聚丙烯,係以丙烯以外的乙烯等共聚單體成分的含量為0.3質量%以上且6質量%以下之物為佳。 As the aforementioned random polypropylene, the content of comonomer components such as ethylene other than propylene is preferably 0.3% by mass or more and 6% by mass or less.

共聚單體成分的含量係以0.5質量%以上為佳。 The content of the comonomer component is preferably 0.5% by mass or more.

共聚單體成分的含量係以5質量%以下為佳。 The content of the comonomer component is preferably 5% by mass or less.

相較於金屬茂(metallocene)觸媒品等,前述無規聚丙烯係以分子量分布有成為廣濶的傾向之齊格勒-納塔(Ziegler-Natta)塔觸媒品為佳。 Compared with metallocene catalysts, the aforementioned random polypropylene is preferably a Ziegler-Natta catalyst whose molecular weight distribution tends to be broad.

前述無規聚丙烯亦可含有1-丁烯、1-己烯、1-辛烯等的α-烯烴單體作為乙烯以外的共聚單體成分,以將1-丁烯等與乙烯一起含有為佳。 The aforementioned random polypropylene may also contain α-olefin monomers such as 1-butene, 1-hexene, 1-octene, etc. as comonomer components other than ethylene, and 1-butene, etc. may be included together with ethylene. good.

構成前述聚丙烯系樹脂片和前述容器本體10之聚丙烯系樹脂組成物,係就使前述聚丙烯系樹脂片和前述容器本體10發揮優異的透明性而言,以含有結晶核劑為佳。 The polypropylene resin composition constituting the polypropylene resin sheet and the container body 10 preferably contains a crystal nucleating agent so that the polypropylene resin sheet and the container body 10 can exhibit excellent transparency.

作為前述結晶核劑,係能夠採用通常被使用作為用以使結晶性聚合物的透明性提升之造核劑,例如可舉出對三級丁基苯甲酸鋁等的芳香族羧酸金屬鹽;磷酸2,2’-亞甲雙(4,6-二-三級丁基苯基)鈉、磷酸2,2’-亞甲雙(4,6-二-三級丁基苯基)鋁等的芳香族磷酸金屬鹽;己糖醇系衍生物、庚糖醇系衍生物、辛糖醇系衍生物、壬糖醇系衍生物等的醣醇系衍生物、山梨糖醇系衍生物等的糖醇衍生物;松香的鈉鹽等松香的金屬鹽等。 As the aforementioned crystal nucleating agent, a nucleating agent commonly used as a nucleating agent for improving the transparency of crystalline polymers can be used, and examples thereof include aromatic carboxylic acid metal salts such as p-tertiary butyl aluminum benzoate; 2,2'-Methylenebis(4,6-di-tertiary butylphenyl)sodium phosphate, 2,2'-methylenebis(4,6-di-tertiary butylphenyl)aluminum phosphate, etc. Aromatic phosphate metal salts; sugar alcohol derivatives, sorbitol derivatives, etc., such as hexitol derivatives, heptitol derivatives, octitol derivatives, nonitol derivatives, etc. Sugar alcohol derivatives; sodium salt of rosin and other metal salts of rosin, etc.

該等造核劑能夠單獨或複數種組合而使用。 These nucleating agents can be used alone or in combination of multiple types.

前述結晶核劑係相對於聚丙烯系樹脂100質量份,在聚丙烯系樹脂組成物係以含有0.1質量份以上且1.0質量份以下的比率為佳。 The crystallization nucleating agent is preferably contained in the polypropylene-based resin composition at a ratio of 0.1 to 1.0 parts by mass based on 100 parts by mass of the polypropylene-based resin.

相對於聚丙烯系樹脂100質量份之前述結晶核劑的含量,係以0.2質量份以上為佳,以0.3質量份以上為較佳。 The content of the crystallization nucleating agent is preferably 0.2 parts by mass or more, and more preferably 0.3 parts by mass or more based on 100 parts by mass of the polypropylene resin.

相對於聚丙烯系樹脂100質量份之前述結晶核劑的含量,係以0.9質量份以下為佳,以0.8質量份以下為較佳。 The content of the crystallization nucleating agent is preferably 0.9 parts by mass or less, and more preferably 0.8 parts by mass or less based on 100 parts by mass of the polypropylene resin.

作為如前述的結晶核劑,以醣醇(alditol)系衍生物為佳、壬糖醇系衍生物為特佳。 As the crystal nucleating agent as mentioned above, alditol derivatives are preferred, and nonitol derivatives are particularly preferred.

亦即,聚丙烯系樹脂組成物係相對於聚丙烯系樹脂100質量份,前述壬糖醇系衍生物係以含有0.1質量份以上且1.0質量份以下的比率為佳。 That is, the polypropylene-based resin composition preferably contains the nonitol-based derivative in a ratio of 0.1 parts by mass or more and 1.0 parts by mass or less based on 100 parts by mass of the polypropylene-based resin.

前述聚丙烯系樹脂組成物亦能夠更含有脫模劑、抗靜電劑、抗菌劑、耐候劑等通常的塑膠用添加劑。 The aforementioned polypropylene resin composition may further contain common plastic additives such as a release agent, an antistatic agent, an antibacterial agent, and a weathering agent.

前述聚丙烯系樹脂組成物係例如能夠藉由如第3圖、第4圖顯示的設備而製成聚丙烯系樹脂片。 The polypropylene-based resin composition can be made into a polypropylene-based resin sheet by, for example, the equipment shown in FIGS. 3 and 4 .

該第3圖係用以製造聚丙烯系樹脂片之設備的概略正面圖,第4圖為 相同設備的上面圖。 The 3rd picture is a schematic front view of the equipment used to manufacture polypropylene resin sheets, and the 4th picture is Above image of the same device.

如該圖所顯示,在本實施形態之聚丙烯系樹脂片的製造設備EX,係具備:擠製機E1,其係用以將前述聚丙烯系樹脂組成物進行熔融混煉;及平模TD,其係用以將藉由該擠製機E1的熔融混煉而得到的熔融混煉物擠製成為薄片狀而得到聚丙烯系樹脂片。 As shown in this figure, the polypropylene-based resin sheet manufacturing equipment EX in this embodiment is equipped with: an extruder E1 for melt-kneading the aforementioned polypropylene-based resin composition; and a flat die TD. , which is used to extrude the melt-kneaded product obtained by the melt-kneading of the extruder E1 into a sheet shape to obtain a polypropylene-based resin sheet.

前述擠製機E1係在擠製方向MD之基端側,具備用以導入前述聚丙烯系樹脂組成物之料斗HP,而前述平模FD係與前述料斗HP為相反地安裝在前述擠製機E1的前端部。 The extruder E1 is equipped with a hopper HP for introducing the polypropylene resin composition on the base end side of the extrusion direction MD, and the flat die FD is installed in the extruder opposite to the hopper HP. The front end of E1.

在本實施形態之前述平模FD,係安裝在擠製方向MD的前端部用以將前述熔融混煉物擠製成為薄片狀。 In this embodiment, the flat die FD is installed at the front end in the extrusion direction MD to extrude the melt-kneaded material into a sheet shape.

前述平模FD係具有直線狀的吐出口,該吐出口的延伸方向為水平方向且以吐出方向朝下的方式配置。 The flat die FD has a linear discharge port. The extending direction of the discharge port is a horizontal direction and is arranged so that the discharge direction faces downward.

在本實施形態之前述製造設備EX,係更具備冷卻裝置,用以將從前述平模FD的直線狀吐出口所吐出之熔融狀態的聚丙烯系樹脂片100’冷卻固化。 In this embodiment, the aforementioned manufacturing equipment EX is further equipped with a cooling device for cooling and solidifying the molten polypropylene-based resin sheet 100' discharged from the linear discharge port of the flat mold FD.

具體而言,前述製造設備EX係具備使旋轉軸平行的3根輥筒在水平方向並列3根而形成之冷卻裝置CL。 Specifically, the manufacturing equipment EX is equipped with a cooling device CL formed by arranging three rollers with parallel rotation axes in the horizontal direction.

該3根輥筒係以前述平模FD的吐出口與旋轉軸成為平行的方式配置,且被配置在前述熔融混煉物被擠製的方向之前述平模FD的下方。 The three rollers are arranged so that the discharge port of the flat die FD is parallel to the rotation axis, and are arranged below the flat die FD in the direction in which the molten kneaded product is extruded.

該3根輥筒之中,中央輥筒係用以將成為薄片狀而被擠製的前述熔融混煉物冷卻之冷卻輥筒R1,前述熔融混煉物(熔融狀態的聚丙烯系樹脂片 100’)從前述平模FD被擠製至其外周面,被擠製的聚丙烯系樹脂片100’係密著在該冷卻輥筒R1之外周面以從一面側冷卻該聚丙烯系樹脂片100’。 Among the three rollers, the central roller is a cooling roller R1 for cooling the melt-kneaded material extruded into a sheet shape. The melt-kneaded material (polypropylene-based resin sheet in a molten state 100') is extruded from the flat die FD to its outer peripheral surface, and the extruded polypropylene resin sheet 100' is closely adhered to the outer peripheral surface of the cooling roller R1 to cool the polypropylene resin sheet from one side. 100'.

中央輥筒之前述冷卻輥筒R1,係以位於平模FD下方的位置之外周面從平模FD遠離的方式旋轉,且以伴隨著該旋轉而將聚丙烯系樹脂片100’牽引之方式配置。 The cooling roller R1 of the center roller is rotated so that the outer peripheral surface of the position located below the flat die FD is away from the flat die FD, and is arranged so as to pull the polypropylene resin sheet 100' with this rotation. .

又,在薄片的流動方向之該冷卻輥筒R1下游側,以與前述冷卻輥筒R1相鄰的方式配置之輥筒亦是能夠達成與前述冷卻輥筒R1同樣的功能者,從前述冷卻輥筒R1的側緣部之外周面被剝離之聚丙烯系樹脂片100’係被纏繞在該輥筒的外周面,而該輥筒係能夠達成作為第2冷卻輥筒R2(以下亦稱為「第2冷卻輥筒R2」)的功能,用以從與被前述冷卻輥筒R1冷卻之側為相反側的面將聚丙烯系樹脂片100’進行冷卻者。 In addition, a roller arranged adjacent to the cooling roller R1 on the downstream side of the cooling roller R1 in the flow direction of the sheet can also achieve the same function as the cooling roller R1. From the cooling roller The polypropylene resin sheet 100' with the outer circumferential surface of the side edge portion of the drum R1 peeled off is wound around the outer circumferential surface of the roller, and this roller can serve as the second cooling roller R2 (hereinafter also referred to as " The function of the second cooling roller R2") is to cool the polypropylene resin sheet 100' from the side opposite to the side cooled by the cooling roller R1.

而且,在與第2冷卻輥筒R2為相反側且與中央輥筒為相鄰之輥筒,係用以藉由與中央冷卻輥筒R1(以下亦稱為「第1冷卻輥筒R1」)之間的距離而使最後得到的聚丙烯系樹脂片100的厚度成為一定之輥筒R0(以下亦稱為「厚度規定用輥筒R0」)。 Furthermore, the roller on the opposite side to the second cooling roller R2 and adjacent to the center roller is used to pass through the center cooling roller R1 (hereinafter also referred to as "the first cooling roller R1"). The thickness of the finally obtained polypropylene-based resin sheet 100 becomes a constant roller R0 (hereinafter also referred to as "thickness regulating roller R0").

使用此種製造設備EX而製造的聚丙烯系樹脂片100,係在其製造時藉由調整從擠製機E1的吐出量、前述第一冷卻輥筒R1的旋轉速度(聚丙烯系樹脂片100的牽引速度)而決定厚度之同時,藉由前述厚度規定輥筒R0而能夠以厚度不產生偏差的方式製造。 The polypropylene resin sheet 100 manufactured using this manufacturing equipment EX is manufactured by adjusting the discharge amount from the extruder E1 and the rotation speed of the first cooling roller R1 (polypropylene resin sheet 100 The thickness is determined by the pulling speed) and the thickness is determined by the thickness-defining roller R0 so that the thickness does not vary.

而且,前述聚丙烯系樹脂片100係在從平模FD被擠製的時點,雖然至少厚度方向中央部為比無規聚丙烯和均聚聚丙烯的熔點更高的高溫,但是藉由與第一冷卻輥筒R1和前述厚度規定輥筒R0接觸而急速地被冷卻。 Furthermore, when the polypropylene-based resin sheet 100 is extruded from the flat die FD, at least the central portion in the thickness direction is at a higher temperature than the melting points of random polypropylene and homopolypropylene. A cooling roller R1 comes into contact with the thickness-defining roller R0 and is rapidly cooled.

因此,在本實施形態之前述製造設備EX,係能夠藉由在擠製機的溫度設定、從平模FD起算至第一冷卻輥筒R1為止的距離、第一冷卻輥筒R1和厚度規制輥筒R0的溫度調整等而調整聚丙烯系樹脂片100的結晶化。 Therefore, in the present embodiment, the aforementioned manufacturing equipment EX can be controlled by adjusting the temperature setting of the extruder, the distance from the flat die FD to the first cooling roller R1, the first cooling roller R1, and the thickness regulating roller. The crystallization of the polypropylene resin sheet 100 is adjusted by adjusting the temperature of the cylinder R0 and the like.

如以上,聚丙烯系樹脂片100係藉由實施下列步驟而製造聚丙烯系樹脂片100之聚丙烯系樹脂片的製造方法來製造,包含:混煉步驟,其係使用擠製機E1將含有聚丙烯系樹脂的聚丙烯系樹脂組成物進行熔融混煉而得到熔融混煉物之步驟;及擠製步驟,其係從安裝在前述擠製機E1之模具(平模FD)將前述熔融混煉物擠製成為薄片狀而得到聚丙烯系樹脂片之步驟。 As described above, the polypropylene resin sheet 100 is manufactured by a polypropylene resin sheet manufacturing method that carries out the following steps to manufacture the polypropylene resin sheet 100, including: a kneading step in which the extruder E1 is used to mix the polypropylene resin sheet containing A step of melt-kneading a polypropylene-based resin composition of a polypropylene-based resin to obtain a melt-kneaded product; and an extrusion step, which involves extruding the aforementioned melt-kneaded product from a die (flat die FD) installed in the aforementioned extruder E1. A step of extruding the kneaded material into a sheet shape to obtain a polypropylene resin sheet.

在該聚丙烯系樹脂片100的製造方法,在前述混煉步驟所使用的前述聚丙烯系樹脂組成物係含有均聚聚丙烯及無規聚丙烯,前述均聚聚丙烯在前述均聚聚丙烯與前述無規聚丙烯的總量所佔的比率為50質量%以上且95質量%以下,而且,前述均聚聚丙烯在溫度230℃、荷重2.16kg所測定的熔體質量流動速率、與前述無規聚丙烯的前述熔體質量流動速率之差為0.6g/10min以上且6.0g/10min以下。 In the manufacturing method of the polypropylene-based resin sheet 100, the polypropylene-based resin composition used in the kneading step contains homopolymerized polypropylene and random polypropylene, and the aforementioned homopolymerized polypropylene is in the aforementioned homopolymerized polypropylene. The ratio to the total amount of the atactic polypropylene is 50 mass % or more and 95 mass % or less, and the melt mass flow rate of the homopolymer polypropylene measured at a temperature of 230°C and a load of 2.16 kg is consistent with the above The difference in the melt mass flow rates of atactic polypropylene is 0.6 g/10 min or more and 6.0 g/10 min or less.

在本實施形態,因為在聚丙烯系樹脂組成物含有熔體質量流動速率之值較接近的無規聚丙烯及均聚聚丙烯,所以在擠製機E1的內部,無規聚丙烯係對均聚聚丙烯顯示良好的分散性,從平模FD被吐出後的聚丙烯系樹脂片100係能夠不產生急速的結晶化。 In this embodiment, the polypropylene-based resin composition contains atactic polypropylene and homopolypropylene whose melt mass flow rates are close to each other. Therefore, inside the extruder E1, the atactic polypropylene-based and homopolymer-based polypropylene are Polypropylene shows good dispersibility, and the polypropylene-based resin sheet 100 after being discharged from the flat die FD does not undergo rapid crystallization.

因而,在前述擠製步驟係能夠容易地製造具有霧度為25%以下之優異的透明性之丙烯系樹脂片。 Therefore, in the aforementioned extrusion step, acrylic resin sheets having excellent transparency with a haze of 25% or less can be easily produced.

在本實施形態,由於係實施使用平模FD作為前述模具且對 於旋轉中的輥筒(第1冷卻輥筒R1)的外周面從前述平模FD將前述熔融混煉物擠製成為薄片狀之前述擠製步驟,而且接著前述擠製步驟而實施將前述輥筒冷卻而藉由該輥筒冷卻被擠製成為薄片狀之前述熔融混煉物之冷卻步驟,而特別容易製造具有霧度為25%以下之優異的透明性之聚丙烯系樹脂片。 In this embodiment, since the flat mold FD is used as the mold and the The extrusion step of extruding the molten kneaded material into a sheet form from the flat die FD is performed on the outer peripheral surface of the rotating roller (first cooling roller R1), and following the extrusion step, the roller is It is particularly easy to produce a polypropylene-based resin sheet having excellent transparency with a haze of 25% or less through the cooling step of the melt-kneaded material before being extruded into a sheet shape by the roller cooling.

又,本實施形態的聚丙烯系樹脂片100不僅是此種方法,亦能夠使用吹塑法等各種方法來製造。 In addition, the polypropylene-based resin sheet 100 of this embodiment can be produced not only by this method but also by various methods such as blow molding.

為了使用前述製造設備EX而製造的聚丙烯系樹脂片100以製造前述容器本體10,在本實施形態亦能夠採用真空成形法、壓空成形法、真空-壓空成形法、多模成形法、壓縮成形法等在通常的熱成形被採用的方法。 In order to manufacture the container body 10 using the polypropylene resin sheet 100 manufactured by the manufacturing equipment EX, in this embodiment, a vacuum forming method, a pressure forming method, a vacuum-pressure forming method, a multi-mold forming method, or Compression molding is a method commonly used in thermoforming.

在本實施形態,係例示將聚丙烯系樹脂片100使用於形成容器本體10之情況,但是例示的聚丙烯系樹脂片100亦可作為蓋子的形成材料。 In this embodiment, the polypropylene resin sheet 100 is used to form the container body 10. However, the polypropylene resin sheet 100 may also be used as a material for forming the lid.

又,針對聚丙烯系樹脂片100,只要滿足求要求物性,能夠以多層的方式使用。 In addition, the polypropylene-based resin sheet 100 can be used in a multi-layered manner as long as it satisfies required physical properties.

而且,聚丙烯系樹脂片100係除了用以收容食品等的收容物X之容器以外,亦能夠利用在如被要求透明性及耐衝撃性的各種用途。 Furthermore, the polypropylene resin sheet 100 can be used in various applications in which transparency and impact resistance are required, in addition to being used as a container for storing objects X such as food.

亦即,本發明係不被上述例示任何限定。 That is, the present invention is not limited at all by the above examples.

[實施例] [Example]

其次,舉出實施例而更詳細地說明本發明,但是本發明係不被該等實施例限定。 Next, although an Example is given and this invention is demonstrated in more detail, this invention is not limited to these Examples.

將有關本發明的效果之驗證結果顯示在以下。 Verification results regarding the effects of the present invention are shown below.

<驗證1> <Verification 1>

(比較例1-1) (Comparative Example 1-1)

將含有均聚聚丙烯(hPP1)(MFR:3.0g/10min、衝撃強度(23℃、ASTM D256)3.0kg.cm/cm)100質量份、及含結晶核劑的母料(MB1)4質量份之聚丙烯系樹脂組成物供給至擠製機,使用擠製機進行熔融混煉且使用平模擠製,藉由冷卻輥筒進行冷卻固化而製造聚丙烯系樹脂片。 100 parts by mass of homopolypropylene (hPP1) (MFR: 3.0g/10min, impact strength (23°C, ASTM D256) 3.0kg.cm/cm) and 4 parts by mass of masterbatch (MB1) containing crystal nucleation agent The polypropylene-based resin composition is supplied to an extruder, melt-kneaded using the extruder, extruded using a flat die, and cooled and solidified by a cooling roller to produce a polypropylene-based resin sheet.

(基重) (base weigh)

從所得到的聚丙烯系樹脂片切取一邊10cm的正方形試料且測定質量,且將其換算成為每1m2的質量而求取基重(每1m2的質量)。 A square sample with a side of 10 cm was cut out from the obtained polypropylene resin sheet, the mass was measured, and the basis weight (mass per 1 m 2 ) was calculated by converting it into mass per 1 m 2 .

(耐衝撃性評估) (Evaluation of impact resistance)

使用落錘衝撃試驗裝置CEAST9350進行評估聚丙烯系樹脂片的耐衝撃性。 The impact resistance of polypropylene resin sheets was evaluated using the falling weight impact test device CEAST9350.

評估項目係設為全吸收能量(J)。 The evaluation item is set to total absorbed energy (J).

(透明性) (Transparency)

測定聚丙烯系樹脂片的霧度。 The haze of the polypropylene resin sheet was measured.

(彎曲剛性) (bending rigidity)

使用KATO TECH公司的彎曲試驗機(商品名「KES FB2-L」)而求取聚丙烯系樹脂片的彎曲剛性(特性值B)。 The bending rigidity (characteristic value B) of the polypropylene-based resin sheet was determined using a bending testing machine (trade name "KES FB2-L") of KATO TECH Co., Ltd.

(實施例1-1) (Example 1-1)

將含有與在「比較例1-1」所使用的均聚聚丙烯(hPP1)(MFR:3.0g/10min)相同的均聚聚丙烯50質量份、及無規聚丙烯(rPP1)(MFR:1.2g/ 10min、衝撃強度(23℃、JIS K6921-2)24.0kJ/m2)50質量份之聚丙烯系樹脂組成物供給至擠製機,使用擠製機進行熔融混煉且使用平模擠製,藉由冷卻輥筒進行冷卻固化而製造聚丙烯系樹脂片且與「比較例1-1」的聚丙烯系樹脂片同樣地進行評估。 50 parts by mass of the same homopolypropylene (hPP1) (MFR: 3.0g/10min) used in "Comparative Example 1-1" and random polypropylene (rPP1) (MFR: 1.2g/10min, impact strength (23℃, JIS K6921-2) 24.0kJ/m 2 ) 50 parts by mass of the polypropylene resin composition are supplied to the extruder, and the extruder is used for melting and kneading using a flat die A polypropylene-based resin sheet was produced by extrusion and cooling and solidification with a cooling roller, and was evaluated in the same manner as the polypropylene-based resin sheet of "Comparative Example 1-1".

(實施例1-2) (Example 1-2)

將含有與在「比較例1-1」所使用的均聚聚丙烯(hPP1)(MFR:3.0g/10min)相同的均聚聚丙烯50質量份、及與「實施例1-1」為另外的無規聚丙烯(rPP2)(MFR:2.3g/10min、衝撃強度(23℃、JIS K6921-2)7.8kJ/m2)50質量份之聚丙烯系樹脂組成物供給至擠製機,使用擠製機進行熔融混煉且使用平模擠製,藉由冷卻輥筒進行冷卻固化而製造聚丙烯系樹脂片且與「比較例1-1」的聚丙烯系樹脂片同樣地進行評估。 Containing 50 parts by mass of the same homopolypropylene (hPP1) (MFR: 3.0g/10min) as used in "Comparative Example 1-1", and 50 parts by mass of the same homopolypropylene as used in "Example 1-1" 50 parts by mass of a polypropylene-based resin composition of random polypropylene (rPP2) (MFR: 2.3g/10min, impact strength (23°C, JIS K6921-2) 7.8kJ/m 2 ) was supplied to the extruder, and used The extruder melt-kneaded and extruded using a flat die, and cooled and solidified with a cooling roller to produce a polypropylene-based resin sheet, and evaluated similarly to the polypropylene-based resin sheet of "Comparative Example 1-1".

將該驗證1所製造的聚丙烯系樹脂片之評估結果顯示在下述表。 The evaluation results of the polypropylene resin sheet produced in this verification 1 are shown in the following table.

Figure 108110756-A0202-12-0024-1
Figure 108110756-A0202-12-0024-1

如該結果所顯示,在含有熔體質量流動速率為顯示接近均聚聚丙烯之值的無規聚丙烯之「實施例1-1」、「實施例1-2」,雖然不使用結晶核劑母料,但是相較於使用結晶核劑母料之「比較例1-1」,霧度為僅稍微上升且具有優異的透明性。 As shown in the results, in "Example 1-1" and "Example 1-2" containing atactic polypropylene with a melt mass flow rate close to that of homopolymer polypropylene, no crystallization nucleating agent was used. Masterbatch, but compared to "Comparative Example 1-1" using a crystal nucleating agent masterbatch, the haze is only slightly increased and has excellent transparency.

而且相較於「比較例1-1」,在「實施例1-1」、「實施例1-2」之全吸收能量係顯示約5倍以上之值。 Furthermore, compared to "Comparative Example 1-1", the total absorbed energy in "Example 1-1" and "Example 1-2" shows a value approximately 5 times greater.

亦即,從該情形,得知依照本發明,在聚丙烯系樹脂片能夠發揮優異的透明性、耐衝撃性、彎曲剛性。 That is, from this situation, it is understood that according to the present invention, the polypropylene-based resin sheet can exhibit excellent transparency, impact resistance, and bending rigidity.

<驗證2> <Verification 2>

(比較例2-1) (Comparative Example 2-1)

將與驗證1不同的均聚聚丙烯(hPP2)(MFR:0.5g/10min、衝撃強度(23℃、JIS K6921-2)8.2kJ/m2)使用擠製機進行熔融混煉且使用平模進行擠製,藉由冷卻輥筒進行冷卻固化而製造聚丙烯系樹脂片。 Homopolypropylene (hPP2) (MFR: 0.5g/10min, impact strength (23°C, JIS K6921-2) 8.2kJ/m 2 ) different from verification 1 was melt-kneaded using an extruder and a flat die was used Extrusion is performed, and cooling and solidification are performed with a cooling roller to produce a polypropylene-based resin sheet.

(比較例2-2) (Comparative Example 2-2)

相對於均聚聚丙烯(hPP2)100質量份,以2質量份的比率使用與驗證1相同的結晶核劑母料(MB1)而製造聚丙烯系樹脂片。 A polypropylene-based resin sheet was produced using the same crystal nucleating agent masterbatch (MB1) as in Verification 1 at a ratio of 2 parts by mass with respect to 100 parts by mass of homopolypropylene (hPP2).

將該驗證2所製造的聚丙烯系樹脂片之評估結果顯示在下述表。 The evaluation results of the polypropylene-based resin sheets produced in this verification 2 are shown in the following table.

Figure 108110756-A0202-12-0025-2
Figure 108110756-A0202-12-0025-2

在上述的表,得知不調配、無規聚丙烯時,透明性及耐衝撃性成為不充分。 From the table above, it is found that transparency and impact resistance are insufficient when random polypropylene is not blended.

<驗證3> <Verification 3>

(實施例3-1) (Example 3-1)

將含有與驗證1、驗證2不同的均聚聚丙烯(hPP3)(MFR:3.0g/10min、 衝撃強度(23℃、JIS K6921-2)5.7kJ/m2)90質量份、無規聚丙烯(rPP3)(MFR:1.3g/10min、衝撃強度(23℃、JIS K7111)9.0kJ/m2)10質量份,而且含有與驗證1相同的結晶核劑母料(MB1)2質量份之聚丙烯系樹脂組成物供給至擠製機,使用擠製機進行熔融混煉且使用平模進行擠製,藉由冷卻輥筒進行冷卻固化而製造聚丙烯系樹脂片。 A random polypropylene containing 90 parts by mass of homopolypropylene (hPP3) (MFR: 3.0g/10min, impact strength (23°C, JIS K6921-2) 5.7kJ/m 2 ) different from verification 1 and verification 2 (rPP3) (MFR: 1.3g/10min, impact strength (23°C, JIS K7111) 9.0kJ/m 2 ) 10 parts by mass, and contains 2 parts by mass of the same crystal nucleation agent masterbatch (MB1) as in Verification 1 The propylene-based resin composition is supplied to an extruder, melt-kneaded using the extruder, extruded using a flat die, and cooled and solidified by a cooling roller to produce a polypropylene-based resin sheet.

(實施例3-2) (Example 3-2)

除了將均聚聚丙烯(hPP3)與無規聚丙烯(rPP3))的比率從90:10變更成為70:30以外,係與「實施例3-1」同樣地製造聚丙烯系樹脂片。 A polypropylene resin sheet was produced in the same manner as "Example 3-1" except that the ratio of homopolypropylene (hPP3) and random polypropylene (rPP3) was changed from 90:10 to 70:30.

(實施例3-3) (Example 3-3)

除了將均聚聚丙烯(hPP3)與無規聚丙烯(rPP3))的比率從90:10變更成為50:50以外,係與「實施例3-1」同樣地製造聚丙烯系樹脂片。 A polypropylene resin sheet was produced in the same manner as "Example 3-1" except that the ratio of homopolypropylene (hPP3) and random polypropylene (rPP3) was changed from 90:10 to 50:50.

(比較例3-1) (Comparative Example 3-1)

除了將均聚聚丙烯(hPP3)與無規聚丙烯(rPP3))的比率從90:10變更成為30:70以外,係與「實施例3-1」同樣地製造聚丙烯系樹脂片。 A polypropylene resin sheet was produced in the same manner as in "Example 3-1" except that the ratio of homopolypropylene (hPP3) and random polypropylene (rPP3) was changed from 90:10 to 30:70.

將在該驗證3所製造的聚丙烯系樹脂片之評估結果顯示在下述表。 The evaluation results of the polypropylene-based resin sheets produced in this verification 3 are shown in the following table.

Figure 108110756-A0202-12-0027-3
Figure 108110756-A0202-12-0027-3

在上述表,與至此為止的驗證同樣地調配有無規聚丙烯之物,係相較於其它物,顯示具有較優異的透明性及耐衝撃性。 In the above table, as in the verification so far, the compound containing atactic polypropylene showed superior transparency and impact resistance compared to other compounds.

又,在上述表,無規聚丙烯的調配量大於50質量份時,得知「全吸收能量」及「彎曲剛性」之值低落且耐衝撃性及剛性各自開始低落。 Furthermore, in the above table, it is found that when the blending amount of random polypropylene exceeds 50 parts by mass, the values of "total absorbed energy" and "bending rigidity" decrease, and the impact resistance and rigidity each begin to decrease.

<驗證4> <Verification 4>

(實施例4-1) (Example 4-1)

將含有與驗證1相同的均聚聚丙烯(hPP1)(MFR:3.0g/10min)相同的均聚聚丙烯50質量份、與至此為止的驗證所使用的無規聚丙烯為不同的無規聚丙烯(rPP4)(MFR:1.8g/10min、衝撃強度(23℃、ASTM D256)6.0kg.cm/cm)50質量份、及結晶核劑母料(MB1)2.0質量份之聚丙烯系樹脂組成物供給至擠製機,使用擠製機進行熔融混煉且使用平模進行擠製,藉由冷 卻輥筒進行冷卻固化而製造聚丙烯系樹脂片。 A random polypropylene containing 50 parts by mass of the same homopolypropylene (hPP1) (MFR: 3.0g/10min) as in Verification 1 but different from the atactic polypropylene used in the verification so far was prepared. A polypropylene-based resin composed of 50 parts by mass of propylene (rPP4) (MFR: 1.8g/10min, impact strength (23°C, ASTM D256) 6.0kg.cm/cm) and 2.0 parts by mass of crystal nucleation agent masterbatch (MB1) The material is supplied to the extruder, and the extruder is used for melting and kneading and a flat die is used for extrusion. The cooling roller is cooled and solidified to produce a polypropylene resin sheet.

(實施例4-2) (Example 4-2)

除了將均聚聚丙烯(hPP1)(MFR:3.0g/10min)與無規聚丙烯(rPP4)(MFR:1.8g/10min))的比率從50:50變更成為70:30以外,係與「實施例4-1」同樣地製造聚丙烯系樹脂片。 Except for changing the ratio of homopolypropylene (hPP1) (MFR: 3.0g/10min) and atactic polypropylene (rPP4) (MFR: 1.8g/10min)) from 50:50 to 70:30, it is the same as " Example 4-1" A polypropylene resin sheet was produced in the same manner.

(實施例4-3) (Example 4-3)

除了將均聚聚丙烯(hPP1)(MFR:3.0g/10min)與無規聚丙烯(rPP4)(MFR:1.8g/10min))的比率從50:50變更成為80:20以外,係與「實施例4-1」同樣地製造聚丙烯系樹脂片。 Except for changing the ratio of homopolypropylene (hPP1) (MFR: 3.0g/10min) and atactic polypropylene (rPP4) (MFR: 1.8g/10min)) from 50:50 to 80:20, it is the same as " Example 4-1" A polypropylene resin sheet was produced in the same manner.

(實施例4-4) (Example 4-4)

除了將均聚聚丙烯(hPP1)(MFR:3.0g/10min)與無規聚丙烯(rPP4)(MFR:1.8g/10min))的比率從50:50變更成為90:10以外,係與「實施例4-1」同樣地製造聚丙烯系樹脂片。 Except for changing the ratio of homopolypropylene (hPP1) (MFR: 3.0g/10min) and atactic polypropylene (rPP4) (MFR: 1.8g/10min)) from 50:50 to 90:10, it is the same as " Example 4-1" A polypropylene resin sheet was produced in the same manner.

將在該驗證4所製造的聚丙烯系樹脂片之評估結果顯示在下述表。 The evaluation results of the polypropylene-based resin sheets produced in this verification 4 are shown in the following table.

Figure 108110756-A0202-12-0029-4
Figure 108110756-A0202-12-0029-4

從該表顯示之結果,得知聚丙烯系樹脂片的耐衝撃性係能夠藉由含有無規聚丙烯而提升。 From the results shown in this table, it is known that the impact resistance of the polypropylene-based resin sheet can be improved by containing random polypropylene.

<驗證5> <Verification 5>

(實施例5-1) (Example 5-1)

將含有與驗證3相同的均聚聚丙烯(hPP3)(MFR:3.0g/10min)90質量份、與驗證1的「實施例1-2」相同的無規聚丙烯(rPP2)(MFR:2.3g/10min)10質量份、結晶核劑母料(MB1)2.0質量份之聚丙烯系樹脂組成物供給至擠製機,使用擠製機進行熔融混煉且使用平模進行擠製,藉由冷卻輥筒進行冷卻固化而製造聚丙烯系樹脂片。 Containing 90 parts by mass of the same homopolypropylene (hPP3) (MFR: 3.0g/10min) as in Verification 3 and the same random polypropylene (rPP2) (MFR: 2.3) as in "Example 1-2" of Verification 1 g/10min) 10 parts by mass of the polypropylene resin composition and 2.0 parts by mass of the crystallization nucleating agent masterbatch (MB1) were supplied to the extruder, melt-kneaded using the extruder and extruded using a flat die. The cooling roller performs cooling and solidification to produce a polypropylene resin sheet.

(實施例5-2) (Example 5-2)

除了將均聚聚丙烯(hPP3)(MFR:3.0g/10min)與無規聚丙烯(rPP2) (MFR:2.3g/10min))的比率從90:10變更成為70:30以外,係與「實施例5-1」同樣地製造聚丙烯系樹脂片。 In addition to combining homopolypropylene (hPP3) (MFR: 3.0g/10min) and atactic polypropylene (rPP2) (MFR: 2.3g/10min))) except that the ratio was changed from 90:10 to 70:30, a polypropylene-based resin sheet was produced in the same manner as "Example 5-1".

(實施例5-3) (Example 5-3)

除了將均聚聚丙烯(hPP3)(MFR:3.0g/10min)與無規聚丙烯(rPP2)(MFR:2.3g/10min))的比率從90:10變更成為50:50以外,係與「實施例5-1」同樣地製造聚丙烯系樹脂片。 Except for changing the ratio of homopolypropylene (hPP3) (MFR: 3.0g/10min) and atactic polypropylene (rPP2) (MFR: 2.3g/10min)) from 90:10 to 50:50, it is the same as " Example 5-1" A polypropylene resin sheet was produced in the same manner.

(比較例5-1) (Comparative Example 5-1)

除了將均聚聚丙烯(hPP3)(MFR:3.0g/10min)與無規聚丙烯(rPP2)(MFR:2.3g/10min))的比率從90:10變更成為30:70以外,係與「實施例5-1」同樣地製造聚丙烯系樹脂片。 Except for changing the ratio of homopolypropylene (hPP3) (MFR: 3.0g/10min) and atactic polypropylene (rPP2) (MFR: 2.3g/10min)) from 90:10 to 30:70, it is the same as " Example 5-1" A polypropylene resin sheet was produced in the same manner.

將在該驗證5所製造的聚丙烯系樹脂片之評估結果顯示在下述表。 The evaluation results of the polypropylene-based resin sheets produced in this verification 5 are shown in the following table.

Figure 108110756-A0202-12-0030-5
Figure 108110756-A0202-12-0030-5

與在驗證3所得到的結果相同,得知在上述的表之無規聚丙烯的調配量大於50質量份時,「全吸收能量」及「彎曲剛性」之值降低且耐衝撃性及、剛性各自開始降低。 Same as the results obtained in Verification 3, it was found that when the blending amount of the random polypropylene in the above table exceeds 50 parts by mass, the values of "total absorbed energy" and "bending rigidity" decrease, and the impact resistance and rigidity decrease. Each began to decrease.

<驗證6> <Verification 6>

(實施例6-1) (Example 6-1)

將含有與驗證3、驗證5相同的均聚聚丙烯(hPP3)(MFR:3.0g/10min)90質量份、與至此為止的驗證為另外的無規聚丙烯(rPP5)(MFR:5.8g/10min、衝撃強度(23℃、廠商法)20.0kJ/m)10質量份、及結晶核劑母料(MB1)2.0質量份之聚丙烯系樹脂組成物供給至擠製機,使用擠製機進行熔融混煉且使用平模進行擠製,藉由冷卻輥筒進行冷卻固化而製造聚丙烯系樹脂片。 It contains 90 parts by mass of the same homopolypropylene (hPP3) (MFR: 3.0g/10min) as verified in Verification 3 and Verification 5, and another random polypropylene (rPP5) (MFR: 5.8g/ 10 minutes, 10 parts by mass of impact strength (23°C, manufacturer's method) 20.0 kJ/m) and 2.0 parts by mass of crystal nucleation agent masterbatch (MB1) of the polypropylene resin composition are supplied to the extruder, and the extruder is used. The mixture is melt-kneaded and extruded using a flat die, and is cooled and solidified by a cooling roller to produce a polypropylene-based resin sheet.

(實施例6-2) (Example 6-2)

除了將均聚聚丙烯(hPP3)(MFR:3.0g/10min)與無規聚丙烯(rPP5)(MFR:5.8g/10min))的比率從90:10變更成為70:30以外,係與「實施例6-1」同樣地製造聚丙烯系樹脂片。 Except for changing the ratio of homopolypropylene (hPP3) (MFR: 3.0g/10min) and atactic polypropylene (rPP5) (MFR: 5.8g/10min)) from 90:10 to 70:30, it is the same as " Example 6-1" A polypropylene resin sheet was produced in the same manner.

(實施例6-3) (Example 6-3)

除了將均聚聚丙烯(hPP3)(MFR:3.0g/10min)與無規聚丙烯(rPP5)(MFR:5.8g/10min))的比率從90:10變更成為50:50以外,係與「實施例6-1」同樣地製造聚丙烯系樹脂片。 Except for changing the ratio of homopolypropylene (hPP3) (MFR: 3.0g/10min) and atactic polypropylene (rPP5) (MFR: 5.8g/10min)) from 90:10 to 50:50, it is the same as " Example 6-1" A polypropylene resin sheet was produced in the same manner.

(比較例6-1) (Comparative Example 6-1)

除了將均聚聚丙烯(hPP3)(MFR:3.0g/10min)與無規聚丙烯(rPP5)(MFR:5.8g/10min))的比率從90:10變更成為30:70以外,係與「實施 例6-1」同樣地製造聚丙烯系樹脂片。 Except for changing the ratio of homopolypropylene (hPP3) (MFR: 3.0g/10min) and atactic polypropylene (rPP5) (MFR: 5.8g/10min)) from 90:10 to 30:70, it is the same as " implement Example 6-1" A polypropylene resin sheet was produced in the same manner.

將在該驗證6所製造的聚丙烯系樹脂片之評估結果顯示在下述表。 The evaluation results of the polypropylene-based resin sheets produced in this verification 6 are shown in the following table.

Figure 108110756-A0202-12-0032-6
Figure 108110756-A0202-12-0032-6

在該驗證6,係與至此為止的驗證不同,無規聚丙烯的熔體質量流動速率係比均聚聚丙烯更高。 In this verification 6, unlike the verifications so far, the melt mass flow rate of atactic polypropylene is higher than that of homopolypropylene.

但是,得知此時亦藉由熔體質量流動速率為預定範圍,而能夠得到具有優異的透明性和耐衝撃性之聚丙烯系樹脂片。 However, it was found that a polypropylene resin sheet having excellent transparency and impact resistance can be obtained by setting the melt mass flow rate within a predetermined range even in this case.

又,在上述的表,得知無規聚丙烯的調配量大於50質量份時,「霧度」值上升且透明性低落,而且,「彎曲剛性」之值亦開始降低。 In addition, from the above table, it is found that when the blending amount of random polypropylene exceeds 50 parts by mass, the "haze" value increases and the transparency decreases, and the "bending rigidity" value also begins to decrease.

<驗證7> <Verification 7>

(實施例7-1) (Example 7-1)

與驗證6同樣地,係使用相較於均聚聚丙烯,熔體質量流動速率較高的無規聚丙烯而進行驗證。 Similar to Verification 6, verification was conducted using random polypropylene with a higher melt mass flow rate than homopolymer polypropylene.

在此,係使用相較於驗證6所使用的無規聚丙烯(rPP5)(MFR:5.8g/10min),熔體質量流動速率較高的無規聚丙烯(rPP6)(MFR:7.0g/10min)。 Here, compared to the random polypropylene (rPP5) (MFR: 5.8g/10min) used in verification 6, atactic polypropylene (rPP6) (MFR: 7.0g/ 10min).

具體而言,係將含有與驗證3、驗證5、驗證6相同的均聚聚丙烯(hPP3)(MFR:3.0g/10min)50質量份、與至此為止的驗證為另外的無規聚丙烯(rPP6)(MFR:7.0g/10min、衝撃強度(23℃、廠商法)20.0KJ/m)50質量份、及結晶核劑母料(MB1)2.0質量份之聚丙烯系樹脂組成物供給至擠製機,使用擠製機進行熔融混煉且使用平模進行擠製,藉由冷卻輥筒進行冷卻固化而製造聚丙烯系樹脂片。 Specifically, the system contains 50 parts by mass of the same homopolypropylene (hPP3) (MFR: 3.0g/10min) as verified in Verification 3, Verification 5, and Verification 6, and another random polypropylene (which has been verified so far). rPP6) (MFR: 7.0g/10min, impact strength (23°C, manufacturer's method) 20.0KJ/m) 50 parts by mass and a polypropylene resin composition of 2.0 parts by mass of crystal nucleation agent masterbatch (MB1) were supplied to the extruder. The extruder is used for melt-kneading, the flat die is used for extrusion, and the polypropylene-based resin sheet is cooled and solidified by a cooling roller.

(比較例7-1) (Comparative Example 7-1)

除了將均聚聚丙烯(hPP3)(MFR:3.0g/10min)與無規聚丙烯(rPP6)(MFR:7.0g/10min))的比率從50:50變更成為30:70以外,係與「實施例7-1」同樣地製造聚丙烯系樹脂片。 Except for changing the ratio of homopolypropylene (hPP3) (MFR: 3.0g/10min) and atactic polypropylene (rPP6) (MFR: 7.0g/10min)) from 50:50 to 30:70, it is the same as " Example 7-1" A polypropylene resin sheet was produced in the same manner.

將在該驗證7所製造的聚丙烯系樹脂片之評估結果顯示在下述表。 The evaluation results of the polypropylene-based resin sheets produced in this verification 7 are shown in the following table.

Figure 108110756-A0202-12-0034-7
Figure 108110756-A0202-12-0034-7

得知在該驗證7亦是無規聚丙烯的調配量大於50質量份時,「霧度」值上升且透明性開始降低。 In this verification 7, it was also found that when the blending amount of random polypropylene exceeds 50 parts by mass, the "haze" value increases and the transparency begins to decrease.

<驗證8> <Verification 8>

(比較例8-1) (Comparative Example 8-1)

與驗證6、驗證7同樣地,係使用相較於均聚聚丙烯,熔體質量流動速率較高的無規聚丙烯而進行驗證。 Similar to Verification 6 and Verification 7, the verification was conducted using random polypropylene with a higher melt mass flow rate than homopolymer polypropylene.

在此,係使用相較於在驗證7所使用的無規聚丙烯(rPP6)(MFR:7.0g/10min),熔體質量流動速率較高的無規聚丙烯(rPP7)(MFR:9.5g/10min、衝撃強度(23℃、JIS K6921-2)4.9kJ/m2)。 Here, atactic polypropylene (rPP7) (MFR: 9.5g) with a higher melt mass flow rate than the atactic polypropylene (rPP6) (MFR: 7.0g/10min) used in Verification 7 was used. /10min, impact strength (23℃, JIS K6921-2) 4.9kJ/m 2 ).

亦即,在此係使用熔體質量流動速率之差為比6.0g/10min更大的均聚聚丙烯及無規聚丙烯而實施驗證。 That is, the verification was performed here using homopolypropylene and random polypropylene whose melt mass flow rate difference is larger than 6.0 g/10 min.

具體而言,係將含有與驗證3、驗證5、驗證6、驗證7相同的均聚聚丙烯(hPP3)(MFR:3.0g/10min)90質量份、與至此為止的驗證為另外的無規聚丙烯(rPP7)(MFR:9.5g/10min)10質量份、及結晶核劑母料(MB1)2.0質量份之聚丙烯系樹脂組成物供給至擠製機,使用擠製機進行熔融混煉且使用平模進行擠製,藉由冷卻輥筒進行冷卻固化而製造聚丙烯系樹脂片。 Specifically, the system contains 90 parts by mass of the same homopolypropylene (hPP3) (MFR: 3.0g/10min) as in Verification 3, Verification 5, Verification 6, and Verification 7, and the verification up to this point is another random one. A polypropylene-based resin composition of 10 parts by mass of polypropylene (rPP7) (MFR: 9.5g/10min) and 2.0 parts by mass of a crystal nucleation agent masterbatch (MB1) was supplied to an extruder, and melt-kneading was performed using the extruder. Furthermore, a flat die is used for extrusion, and a polypropylene-based resin sheet is produced by cooling and solidifying with a cooling roller.

(比較例8-2) (Comparative Example 8-2)

除了將均聚聚丙烯(hPP3)(MFR:3.0g/10min)與無規聚丙烯(rPP7)(MFR:9.5g/10min))的比率從90:10變更成為70:30以外,係與「比較例8-1」同樣地製造聚丙烯系樹脂片。 Except for changing the ratio of homopolypropylene (hPP3) (MFR: 3.0g/10min) and atactic polypropylene (rPP7) (MFR: 9.5g/10min)) from 90:10 to 70:30, it is the same as " Comparative Example 8-1" A polypropylene resin sheet was produced in the same manner.

(比較例8-3) (Comparative Example 8-3)

除了將均聚聚丙烯(hPP3)(MFR:3.0g/10min)與無規聚丙烯(rPP7)(MFR:9.5g/10min))的比率從90:10變更成為50:50以外,係與「比較例8-1」同樣地製造聚丙烯系樹脂片。 Except for changing the ratio of homopolypropylene (hPP3) (MFR: 3.0g/10min) and atactic polypropylene (rPP7) (MFR: 9.5g/10min)) from 90:10 to 50:50, it is the same as " Comparative Example 8-1" A polypropylene resin sheet was produced in the same manner.

在該驗證8所製造的聚丙烯系樹脂片之評估結果顯示在下述表。 The evaluation results of the polypropylene-based resin sheets produced in this verification 8 are shown in the table below.

Figure 108110756-A0202-12-0036-8
Figure 108110756-A0202-12-0036-8

在該驗證8,係與至此為止的驗證不同,無法觀察到無規聚丙烯的添加效果。 In this verification 8, unlike the verifications up to this point, the effect of adding random polypropylene was not observed.

<驗證9> <Verification 9>

(比較例9-1) (Comparative Example 9-1)

與驗證8相反地,使用熔體質量流動速率之差較小的均聚聚丙烯及無規聚丙烯而實施驗證。 Contrary to Verification 8, the verification was performed using homopolypropylene and atactic polypropylene with a small difference in melt mass flow rates.

具體而言,係將含有均聚聚丙烯(hPP4)(MFR:7.5g/10min、衝撃強度(23℃、JIS K6921-2)4.0kJ/m2)90質量份、與驗證7相同的無規聚丙烯(rPP6)(MFR:7.0g/10min)10質量份、及結晶核劑母料(MB1)2.0質量份之聚丙烯系樹脂組成物供給至擠製機,使用擠製機進行熔融混煉且使用平模進行擠製,藉由冷卻輥筒進行冷卻固化而製造聚丙烯系樹脂片。 Specifically, the system contains 90 parts by mass of homopolypropylene (hPP4) (MFR: 7.5g/10min, impact strength (23°C, JIS K6921-2) 4.0kJ/m 2 ), the same random material as in Verification 7. A polypropylene-based resin composition of 10 parts by mass of polypropylene (rPP6) (MFR: 7.0g/10min) and 2.0 parts by mass of a crystal nucleation agent masterbatch (MB1) was supplied to an extruder, and melt-kneading was performed using the extruder. Furthermore, a flat die is used for extrusion, and a polypropylene-based resin sheet is produced by cooling and solidifying with a cooling roller.

(比較例9-2) (Comparative Example 9-2)

除了將均聚聚丙烯(hPP4)(MFR:7.5g/10min)與無規聚丙烯(rPP6)(MFR:7.0g/10min))的比率從90:10變更成為50:50以外,係與「比較例9-1」同樣地製造聚丙烯系樹脂片。 Except for changing the ratio of homopolypropylene (hPP4) (MFR: 7.5g/10min) and atactic polypropylene (rPP6) (MFR: 7.0g/10min)) from 90:10 to 50:50, it is the same as " Comparative Example 9-1" A polypropylene resin sheet was produced in the same manner.

將在該驗證10所製造的聚丙烯系樹脂片之評估結果顯示在下述表。 The evaluation results of the polypropylene-based resin sheets produced in this verification 10 are shown in the following table.

Figure 108110756-A0202-12-0037-9
Figure 108110756-A0202-12-0037-9

在該驗證9亦與驗證8同樣地,無法觀察到無規聚丙烯的添加效果。 In this verification 9, similarly to verification 8, the effect of adding random polypropylene was not observed.

從以上的結果,能夠得知依照本發明在聚丙烯系樹脂片能夠發揮優異的透明性、耐衝撃性、彎曲剛性。 From the above results, it can be understood that according to the present invention, the polypropylene-based resin sheet can exhibit excellent transparency, impact resistance, and bending rigidity.

1‧‧‧樹脂製容器 1‧‧‧Resin container

10‧‧‧容器本體 10‧‧‧Container body

10a‧‧‧開口部 10a‧‧‧Opening part

10b‧‧‧底面部 10b‧‧‧Bottom face

10f‧‧‧凸緣部 10f‧‧‧Flange part

10w‧‧‧周側壁 10w‧‧‧Peripheral side wall

20‧‧‧蓋子 20‧‧‧Lid

X‧‧‧收容物 X‧‧‧Contained objects

Claims (10)

一種聚丙烯系樹脂片,係由含有聚丙烯系樹脂之聚丙烯系樹脂組成物所構成之霧度為25%以下的聚丙烯系樹脂片,前述聚丙烯系樹脂組成物係含有均聚聚丙烯及無規聚丙烯,前述無規聚丙烯係丙烯以外的共聚單體成分的含量為0.3質量%以上且6質量%以下者,前述均聚聚丙烯在前述均聚聚丙烯與前述無規聚丙烯的總量所佔的比率為50質量%以上且95質量%以下,而且前述均聚聚丙烯在溫度230℃、荷重2.16kg所測定的熔體質量流動速率、與前述無規聚丙烯的前述熔體質量流動速率之差為0.6g/10min以上且6.0g/10min以下。 A polypropylene resin sheet, which is a polypropylene resin sheet with a haze of less than 25% and is composed of a polypropylene resin composition containing a polypropylene resin, the polypropylene resin composition containing homopolymer polypropylene and random polypropylene, the content of the aforementioned random polypropylene-based comonomer components other than propylene is 0.3% by mass or more and less than 6% by mass, and the aforementioned homopolymerized polypropylene is a combination of the aforementioned homopolymerized polypropylene and the aforementioned random polypropylene. The total amount of The difference in body mass flow rate is 0.6g/10min or more and 6.0g/10min or less. 如申請專利範圍第1項所述之聚丙烯系樹脂片,其中藉由落錘衝撃試驗而得到的全吸收能量為1.0J以上。 In the polypropylene resin sheet described in the first aspect of the patent application, the total absorbed energy obtained by the drop weight impact test is 1.0J or more. 如申請專利範圍第1項所述之聚丙烯系樹脂片,其中彎曲剛性為40gf.cm2/cm以上且100gf.cm2/cm以下。 The polypropylene resin sheet described in item 1 of the patent application has a bending rigidity of 40gf. cm 2 /cm or more and 100gf. cm 2 /cm or less. 如申請專利範圍第1項所述之聚丙烯系樹脂片,其中在前述聚丙烯系樹脂組成物更含有結晶核劑。 As for the polypropylene resin sheet described in claim 1, the polypropylene resin composition further contains a crystallization nucleating agent. 如申請專利範圍第1項所述之聚丙烯系樹脂片,其中前述均聚聚丙烯的前述熔體質量流動速率為0.1g/10min以上且5.0g/10min以下。 The polypropylene-based resin sheet described in claim 1, wherein the melt mass flow rate of the homopolymer polypropylene is 0.1g/10min or more and 5.0g/10min or less. 一種聚丙烯系樹脂片的製造方法,係實施下列步驟而製造霧度為25%以下的聚丙烯系樹脂片,該聚丙烯系樹脂片的製造方法包含:混煉步驟,其係使用擠製機將含有聚丙烯系樹脂之聚丙烯系樹脂組成 物邊加熱邊混煉而得到熔融混煉物;及擠製步驟,其係將前述熔融混煉物從安裝在前述擠製機之模具擠製成為薄片狀而得到聚丙烯系樹脂片;在前述混煉步驟所使用的前述聚丙烯系樹脂組成物係含有均聚聚丙烯及無規聚丙烯,前述無規聚丙烯係丙烯以外的共聚單體成分的含量為0.3質量%以上且6質量%以下者,前述均聚聚丙烯在前述均聚聚丙烯與前述無規聚丙烯的總量所佔的比率為50質量%以上且95質量%以下,而且前述均聚聚丙烯在溫度230℃、荷重2.16kg所測定的熔體質量流動速率、與前述無規聚丙烯的前述熔體質量流動速率之差為0.6g/10min以上且6.0g/10min以下。 A method for manufacturing a polypropylene-based resin sheet by performing the following steps to produce a polypropylene-based resin sheet with a haze of 25% or less. The method for manufacturing a polypropylene-based resin sheet includes a kneading step using an extruder. Composed of polypropylene resin containing polypropylene resin The material is kneaded while heating to obtain a molten kneaded product; and an extrusion step is to extrude the aforementioned molten kneaded product from a die installed in the aforementioned extruder into a sheet shape to obtain a polypropylene-based resin sheet; in the aforementioned The polypropylene-based resin composition used in the kneading step contains homopolypropylene and random polypropylene, and the content of the copolymerized monomer components other than propylene in the random polypropylene-based resin is 0.3 mass% or more and 6 mass% or less. Or, the ratio of the aforementioned homopolymerized polypropylene to the total amount of the aforementioned homopolymerized polypropylene and the aforementioned random polypropylene is 50 mass % or more and 95 mass % or less, and the aforementioned homopolymerized polypropylene has a temperature of 230° C. and a load of 2.16 The difference between the melt mass flow rate measured in kg and the melt mass flow rate of the atactic polypropylene is 0.6 g/10 min or more and 6.0 g/10 min or less. 如申請專利範圍第6項所述之聚丙烯系樹脂片的製造方法,其中,所實施的前述擠製步驟中係使用平模作為前述模具且對於旋轉中的輥筒的外周面從前述平模將前述熔融混煉物擠製成為薄片狀;而且,在接著前述擠製步驟之後實施冷卻步驟,該冷卻步驟中係將前述輥筒冷卻並藉由該輥筒而將被擠製成為薄片狀之前述熔融混煉物冷卻。 The method for manufacturing a polypropylene resin sheet according to claim 6, wherein a flat die is used as the die in the extrusion step and the outer circumferential surface of the rotating roller is drawn from the flat die. The melt-kneaded product is extruded into a sheet shape; and, after the extrusion step, a cooling step is performed. In the cooling step, the roller is cooled and the extruded sheet is extruded by the roller. The aforementioned molten kneaded product is cooled. 一種樹脂製容器,係具備在上部設置有開口部之容器本體,及將前述開口部關閉的蓋子,其中前述容器本體及前述蓋子的至少一者係由霧度為25%以下的聚丙烯系樹脂片所構成,前述聚丙烯系樹脂片係由含有聚丙烯系樹脂之聚丙烯系樹脂組成物所 構成,前述聚丙烯系樹脂組成物係含有均聚聚丙烯及無規聚丙烯,前述無規聚丙烯係丙烯以外的共聚單體成分的含量為0.3質量%以上且6質量%以下者,在製成0.4mm的厚度的聚丙烯系樹脂片時藉由落錘衝撃試驗而測定的全吸收能量為1.0J以上,而且彎曲剛性為40gf.cm2/cm以上且100gf.cm2/cm以下。 A resin container, which is provided with a container body having an opening at its upper part, and a lid that closes the opening, wherein at least one of the container body and the lid is made of polypropylene resin with a haze of 25% or less. The polypropylene resin sheet is composed of a polypropylene resin composition containing a polypropylene resin, and the polypropylene resin composition contains a homopolymer polypropylene and a random polypropylene. When the content of comonomer components other than propylene-based propylene is 0.3% by mass or more and 6% by mass or less, the total absorbed energy measured by the drop weight impact test when a polypropylene-based resin sheet with a thickness of 0.4mm is produced is 1.0J or more, and the bending rigidity is 40gf. cm 2 /cm or more and 100gf. cm 2 /cm or less. 如申請專利範圍第8項所述之樹脂製容器,其中前述均聚聚丙烯在前述均聚聚丙烯與前述無規聚丙烯的總量所佔之比率為50質量%以上且95質量%以下,而且,前述均聚聚丙烯在溫度230℃、荷重2.16kg所測定的熔體質量流動速率與前述無規聚丙烯的前述熔體質量流動速率之差為0.6g/10min以上且6.0g/10min以下。 The resin container described in Item 8 of the patent application, wherein the ratio of the homopolypropylene to the total amount of the homopolypropylene and the atactic polypropylene is 50 mass% or more and 95 mass% or less, Furthermore, the difference between the melt mass flow rate of the homopolypropylene measured at a temperature of 230°C and a load of 2.16 kg and the melt mass flow rate of the random polypropylene is 0.6g/10min or more and 6.0g/10min or less. . 如申請專利範圍第8或9項所述之樹脂製容器,其中前述容器本體係由前述聚丙烯系樹脂片所構成,該容器本體係在前述開口部具備朝外延伸之凸緣部,前述蓋子係被接著在前述凸緣部且由將前述開口部關閉之頂部密封材所構成,由前述聚丙烯系樹脂片所構成之前述容器本體的平均厚度為0.1mm以上且0.7mm以下。 The resin container according to claim 8 or 9, wherein the container body is composed of the polypropylene resin sheet, the container body is provided with an outwardly extending flange portion at the opening, and the lid It is composed of a top sealing material adhered to the flange portion and closing the opening portion, and the average thickness of the container body composed of the polypropylene resin sheet is 0.1 mm or more and 0.7 mm or less.
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TW200813144A (en) * 2006-07-13 2008-03-16 Mitsui Chemicals Inc Thermoplastic resin composition and multilayer laminated body constituted thereof, article having the thermoplastic resin composition adhering thereto, and method for protecting the surface of an article

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