TW202035085A - Cutting blade and packaging container - Google Patents
Cutting blade and packaging container Download PDFInfo
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- TW202035085A TW202035085A TW109100440A TW109100440A TW202035085A TW 202035085 A TW202035085 A TW 202035085A TW 109100440 A TW109100440 A TW 109100440A TW 109100440 A TW109100440 A TW 109100440A TW 202035085 A TW202035085 A TW 202035085A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D25/00—Details of other kinds or types of rigid or semi-rigid containers
- B65D25/38—Devices for discharging contents
- B65D25/52—Devices for discharging successive articles or portions of contents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
- B65D5/42—Details of containers or of foldable or erectable container blanks
- B65D5/72—Contents-dispensing means
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Abstract
Description
本發明涉及一種切割刀片及包裝容器。The invention relates to a cutting blade and a packaging container.
用於食品包裝等之薄膜狀包裝物係捲繞成捲狀且收容於大致長方體之包裝容器內。該包裝容器通常具有收容包裝物之收容盒、及用於將從收容盒僅抽出使用量之包裝物切斷之排列多個齒而成的鋸狀切割刀片。前述收容盒具有一面爲開口面之大致長方體之主體部、及將前述開口面打開及關閉之蓋部,前述切割刀片配置於前述蓋部之端邊。包裝物之使用者藉由握持收容於收容盒之包裝物之端部並拉拽,而將薄膜狀包裝物從主體部與蓋部之間隙抽出,且藉由關閉蓋部並利用前述切割刀片將夾於主體部與蓋部之間的包裝物切斷,而可將使用量之包裝物從包裝容器取出。Film-like packaging materials used for food packaging, etc. are wound into a roll and housed in a roughly rectangular parallelepiped packaging container. The packaging container usually has a storage box for storing the packaging, and a saw-shaped cutting blade formed by arranging a plurality of teeth to cut the packaging from the storage box for only the used amount. The storage box has a substantially rectangular parallelepiped main body with an opening surface, and a lid portion that opens and closes the opening surface, and the cutting blade is arranged at an end of the lid portion. The user of the package pulls the end of the package housed in the container to pull the film-like package from the gap between the main body and the lid, and closes the lid and uses the aforementioned cutting blade The package sandwiched between the main body part and the cover part is cut, and the used package can be taken out of the packaging container.
作爲從包裝容器抽出之包裝物之切斷方法,已知有以下方法:使包裝容器轉動而將包裝物從中央切斷的方法(以下亦將此種切斷方法簡稱爲「中央切割」);及藉由握持包裝物之寬度方向端部並相對於包裝容器扭轉而從包裝物之寬度方向端部切斷的方法(以下亦將此種切斷方法簡稱爲「端部切割」)。專利文獻1及專利文獻2中,記載有具有如下切割刀片之包裝容器,即,藉由將切割刀片設爲V字狀而易於從中央切斷,另一方面,藉由在切割刀片之側部區配置齒頂朝向外側的齒(以下亦簡稱爲「外向齒」。另外,關於齒頂不朝向外側而以關閉蓋部時朝向包裝容器之底部之方式朝向接近於垂直之方向的齒,由於在後述圖式中朝向圖中上方,故而以下亦簡稱爲「上向齒」)而亦易於從寬度方向端部切斷。As a cutting method of the package drawn from the packaging container, the following method is known: the method of turning the packaging container to cut the package from the center (hereinafter also referred to as "central cutting"); And a method of cutting from the width direction end of the package by holding the width direction end of the package and twisting it relative to the packaging container (hereinafter, this cutting method is also referred to as "end cutting").
另外,此種包裝容器中有如下情況:藉由捲繞之包裝物之逆向旋轉等而切斷的包裝物向主體部之內部回捲,導致包裝物之端部貼附於捲繞之包裝物之表面。而且,已知當使前述貼附之端部再次復原於主體部與蓋部之間時(以下亦簡稱爲「復原時」),會產生向捲繞方向之包裝物之撕裂(縱向開裂)。認爲產生縱向開裂之作用機制如下所述。即,當鄰接之齒的齒頂刺入包裝物且由各個齒頂開始之對包裝物之破裂匯合時,因由前述鄰接之齒的其中一齒開始之破裂過度進行,會在破裂之匯合點產生缺口(裂口)。而且,若藉由從捲繞之包裝物撕下等而施加於包裝物之應力集中於前述缺口,會進行以缺口爲起始點之新破裂,導致產生縱向開裂。In addition, this kind of packaging container has the following situation: the package cut by the reverse rotation of the wrapped package is rolled back to the inside of the main body, causing the end of the package to stick to the wrapped package的面。 The surface. Moreover, it is known that when the above-mentioned attached end is restored between the main body and the cover (hereinafter also referred to as "recovery"), a tear (vertical crack) of the package in the winding direction will occur. . It is believed that the mechanism of the longitudinal cracking is as follows. That is, when the tooth tips of adjacent teeth pierce into the package and the rupture of the package starting from each tooth tip merges, because the rupture started from one of the adjacent teeth is excessively advanced, it will be generated at the confluence point of the rupture Gaps (rips). Moreover, if the stress applied to the package is concentrated on the aforementioned notch by tearing off from the wrapped package, etc., a new rupture with the notch as the starting point will occur, resulting in longitudinal cracks.
專利文獻3中記載有如下切割刀片:將齒高不同之多個齒交替配置,且將鄰接之齒的相向斜邊彼此利用弧連結。根據專利文獻3,當將前述相向斜邊之延長線交叉的點與前述弧之間的距離設爲「平滑距離」,將前述相向斜邊之延長線交叉的點與連結齒高相同之多個齒的齒頂之直線之間的距離根據各個齒高而設爲「第1距離」及「第2距離」時,藉由使平滑距離相對於第1距離之比率及平滑距離相對於第2距離之比率分別處於規定範圍,而抑制縱向開裂。 習知技術文獻 專利文獻Patent Document 3 describes a cutting blade in which a plurality of teeth with different tooth heights are alternately arranged, and the opposing hypotenuses of adjacent teeth are connected by an arc. According to Patent Document 3, when the distance between the intersection of the extension line of the opposing hypotenuse and the arc is set as the "smooth distance", the intersecting point of the extension of the opposing hypotenuse is connected to multiple teeth with the same height When the distance between the straight lines of the tooth tips is set as the "1st distance" and "2nd distance" according to each tooth height, the ratio of the smoothing distance to the first distance and the smoothing distance to the second distance The ratios are in the specified range, and longitudinal cracking is suppressed. Known technical literature Patent literature
專利文獻1日本專利特開2009-83917號公報
專利文獻2日本專利特開2010-120656號公報
專利文獻3日本專利特開2009-132406號公報
發明所欲解決之課題
專利文獻1及專利文獻2中記載之切割刀片係藉由外向齒而使包裝物從寬度方向端部之切斷變得更容易。另外,專利文獻3中記載之切割刀片係難以產生縱向開裂,因此復原變得容易。The problem to be solved by the invention
The cutting blades described in
然而,根據本發明者等人之見解,即便藉由專利文獻1及專利文獻2中記載之切割刀片,亦有在從寬度方向端部切斷時產生計劃外之包裝物向傾斜方向之切斷(斜切)的情況。認爲其原因在於,即便藉由專利文獻1及專利文獻2中記載之外向齒,亦在從寬度方向端部切斷時端部的齒未對包裝體充分刺入,而導致包裝物橫向滑動。However, according to the findings of the inventors, even with the cutting blades described in
另外,根據本發明者等人之見解,即便藉由專利文獻3中記載之切割刀片,亦有未完全地抑制復原時在包裝體產生裂紋,從而在回捲時難以復原成在包裝體不產生裂紋的情況。In addition, according to the findings of the inventors, even with the cutting blade described in Patent Document 3, cracks in the package body during restoration are not completely suppressed, so that it is difficult to restore the package body during rewinding so that it does not occur. The cracked situation.
本發明係鑒於前述課題而成者,其目的在於提供一種切割刀片及具有該切割刀片之包裝容器,該切割刀片不論從中央抑或從寬度方向端部均易於將包裝物切斷,且回捲時之復原變得容易。 解決問題之技術手段The present invention was made in view of the foregoing problems, and its object is to provide a cutting blade and a packaging container having the cutting blade, which can easily cut the package from the center or from the end in the width direction, and when rewinding The restoration becomes easy. Technical means to solve the problem
用於解決前述課題之本發明之一形態涉及一種切割刀片,其沿收容捲狀包裝物之包裝容器之長度方向設置,將前述包裝物切斷。前述切割刀片具有排列有多個齒之中央區、及在前述中央區之外側排列有多個齒之一對外部區,且僅在前述外部區具有齒頂朝向外側之外向齒。前述外向齒之外側之斜邊與鄰接於前述外向齒之外側而配置的鄰接齒之內側之斜邊利用圓弧連接,且前述圓弧之曲率半徑(R1)爲0.3 mm以上1.3 mm以下。One aspect of the present invention for solving the aforementioned problems relates to a cutting blade which is provided along the length direction of a packaging container containing a roll-shaped package and cuts the aforementioned package. The cutting blade has a central area in which a plurality of teeth are arranged, and a pair of outer areas with a plurality of teeth arranged on the outer side of the central area, and only the outer area has outer teeth with tooth tips facing the outside. The hypotenuse on the outer side of the outward tooth and the hypotenuse on the inner side of the adjacent tooth arranged adjacent to the outer side of the outward tooth are connected by an arc, and the radius of curvature (R1) of the arc is 0.3 mm or more and 1.3 mm or less.
另外,本發明之另一形態涉及一種包裝容器,其具有收容捲狀包裝物之收容盒、及將從前述收容盒抽出之前述包裝物切斷之前述切割刀片。 發明效果In addition, another aspect of the present invention relates to a packaging container having a storage box for storing roll-shaped packages, and the cutting blade for cutting the package drawn from the storage box. Invention effect
根據本發明,提供一種切割刀片及具有該切割刀片之包裝容器,該切割刀片不論從中央抑或從寬度方向端部均易於將包裝物切斷,且回捲時之復原變得容易。According to the present invention, there is provided a cutting blade and a packaging container having the cutting blade. The cutting blade can easily cut a package from the center or from the end in the width direction, and easy to restore during rewinding.
[第1實施方式] (包裝容器)[First Embodiment] (Packaging container)
圖1係示意性表示本發明之一實施方式之包裝容器10之構成的關閉蓋部時之立體圖,圖2係示意性表示包裝容器10之構成的打開蓋部時之立體圖。1 is a perspective view schematically showing the structure of a
包裝容器10具有收容盒100與切割刀片200,該收容盒100收容將長條狀之包裝用薄膜等在卷芯之周圍捲繞成捲狀而成的包裝物50使之可抽出。The
收容盒100具有收容包裝物50之主體部110、及對於主體部110轉動自如地連接之蓋部120。主體部110及蓋部120係將一張厚紙折疊而一體地形成。The
另外,以下之說明中,所謂「寬度方向」係指沿著捲繞之包裝物之捲繞軸的方向且爲包裝物之卷芯延伸之方向。另外,所謂「捲繞方向」,對於包裝物係指與寬度方向正交之方向且爲從使用時抽出之端部側向卷芯接近之方向。另外,所謂「端部」,對於切割刀片係指寬度方向之端部,所謂「外側」,對於切割刀片係指從齒之排列方向上之中央部側朝向端部側之方向,所謂「內側」,對於切割刀片係指從齒之排列方向上之端部側朝向中央部側之方向。In addition, in the following description, the "width direction" refers to the direction along the winding axis of the package to be wound and the direction in which the core of the package extends. In addition, the term "winding direction" refers to the direction orthogonal to the width direction of the packaged material and is the direction from the side of the drawn end portion to the core approaching when used. In addition, the term "end" refers to the end in the width direction of the cutting blade, the so-called "outside", and the cutting blade refers to the direction from the center to the end in the arrangement direction of the teeth, the so-called "inner" , For the cutting blade, it refers to the direction from the end side to the center side in the direction in which the teeth are arranged.
另外,以下之說明中,所謂「上端」係指前板114及後板116之與底板118爲相反側之端部,所謂「兩端」係指以前板114成爲正面之方式配置包裝容器10時的構成包裝容器之各部件之左右端部。In addition, in the following description, the "upper end" refers to the end of the
主體部110具有一對端板112a及112b、前板114及後板116、以及底板118。主體部110爲大致長方體形狀之箱體,其係使展開圖中配置於底板118之周圍之端板112a及112b以及前板114及後板116相對於底板118向相同方向彎折而形成。主體部110在與底板118相對向之上表面側具有開口面119。The
蓋部120係藉由使從後板116之上端延伸出之延伸部向前板114側彎折,而沿著與後板116之連接部128可轉動地連接於後板116。蓋部120具有蓋板122、掩蓋片124、以及一對側蓋片126a及126b。蓋部120係將展開圖中配置於蓋板122之周圍之掩蓋片124以及側蓋片126a及126b相對於蓋板122向相同方向彎折而形成。The
蓋板122係具有與開口面119大致相同之形狀及大小之大致長方形之板狀部件,藉由沿著前述連接部128轉動,而將開口面119打開及關閉。掩蓋片124爲板狀部件,其係藉由使從蓋板122之前端延伸出之延伸部向蓋板122將開口面119關閉時朝向底板118之側彎折,從而連接於蓋板122而形成,且配置於蓋板122將開口面119關閉時覆蓋前板114之上端側區域之位置。The
掩蓋片124具有如下形狀:從蓋板122之前端至掩蓋片124之前端125a爲止的長度隨著從蓋板122之前端之兩端部朝向中央部而變長。藉此,掩蓋片124之前端125成爲蓋板122將開口面119關閉而掩蓋片124覆蓋前板114時朝向底板118側之大致V字狀。例如,掩蓋片124具有如下形狀:從蓋板122之前端中在中央部之前端至掩蓋片124之前端125a爲止的長度成爲前板114之短邊之長度之大致3/4,從蓋板122之前端中在端部之前端至掩蓋片124之前端125b爲止的長度成爲前板114之短邊之長度之大致1/2。The
切割刀片200係具有與掩蓋片124之前端125大致相同之大致V字形狀的切割刀片,例如經由密封劑及接著劑等且利用超聲波接合,沿著長度方向接著配置於掩蓋片124中成爲前端125之內面側之位置。The
包裝容器10係以蓋部120將開口面119關閉而掩蓋片124與前板114相對向地覆蓋前板114之狀態保管。此時,收容於主體部110之包裝物50係其前端被從開口面119抽出而接觸於前板114。包裝物50之使用者係在將蓋部120稍微打開之狀態下握持作爲包裝物50之包裝用薄膜等之前端並僅抽出使用量之後,將蓋部120關閉且利用切割刀片200將包裝物50切斷。此時,藉由一面以拇指按住掩蓋片124之中央部而將掩蓋片124壓抵於前板114,一面使包裝容器10朝下旋轉,可利用切割刀片200將作爲包裝物50之包裝用薄膜等從其中央部切斷(中央切割)。或者,握持抽出之包裝物50之寬度方向端部,將握持之前述寬度方向端部相對於收容盒100朝上扭轉或將與握持之前述寬度方向端部相對應之收容盒100之寬度方向端部朝下扭轉,藉此可利用切割刀片200將作爲包裝物50之包裝用薄膜等從前述寬度方向端部切斷(端部切割)。
(切割刀片)The
圖3係表示本實施方式之切割刀片200之示意性構成的前視圖。切割刀片200係於圖3中之切割刀片200之上側區域排列有多個齒,圖3中之切割刀片200之下側區域接著於掩蓋片124中成爲前端125之內面側之位置,且以前述多個齒從前端125稍微突出之方式配置。FIG. 3 is a front view showing a schematic configuration of the
切割刀片200具有中央區210、配置於中央區210之外側之一對側部區220、及在側部區220之外側配置於切割刀片200之端部之一對端部區230。中央區210、側部區220及端部區230均排列有多個齒。另外,本實施方式中,中央區210係切割刀片200之寬度方向上之整個長度之5至20%之範圍,側部區220係中央區210之外側且切割刀片200之寬度方向上之整個長度之50至75%之範圍,端部區230係側部區220之外側且切割刀片200之寬度方向上之整個長度之10至35%之範圍。另外,本說明書中,亦將側部區220及端部區230統稱爲「外部區」。The
另外,本實施方式中,對具有中央區210、側部區220、端部區230之構成進行說明,但亦可爲不具有端部區230而包含中央區210與側部區220之構成。此時,中央區210係切割刀片200之寬度方向上之整個長度之20至30%之範圍,側部區220係中央區210之外側且切割刀片200之寬度方向上之整個長度之70至80%之範圍。In addition, in this embodiment, the configuration having the
切割刀片200整體上具有大致V字形狀。藉此,中央區210較側部區220突出地配置,因而在中央切割之初期易於將中央區210之齒刺入包裝物50,可更容易地進行中央切割。
(中央區)The
圖4係表示構成中央區210的齒之圖3中區域X之局部放大圖。切割刀片200係隔著中央區210之頂點在切割刀片200之寬度方向上呈左右對稱地構成。中央區210包含齒高不同之多個中央齒,前述多個中央齒係以連續之三個中央齒之齒頂不位於同一直線上之方式交錯地配置。中央區210係中央切割時齒頂最先到達包裝物50之區域。此時,藉由連續之三個中央齒之齒頂不位於同一直線上,而從齒高較高之中央齒依次到達包裝物50,從而可減少同時刺入包裝物50之中央齒之個數。藉此,用於將包裝物50切斷之應力僅分散於較慣常少之個數之中央齒,因而更容易將中央區210中之各個中央齒之齒頂刺入包裝物50,可在中央切割之初期以更少之應力開始包裝物50之切斷。因此,中央區210可減小中央切割之初期之對使用者之阻力感。4 is a partial enlarged view of the area X in FIG. 3 showing the teeth constituting the
具體而言,中央區210具有齒高最大之多個中央大齒212、齒高較中央大齒212小之多個中央中齒214、及齒高較中央中齒214小之中央小齒216。Specifically, the
本實施方式中,如圖4所示,若對於構成中央區210之中央大齒212、中央中齒214及中央小齒216中之任一中央齒,將該中央齒之內側之斜邊之延長線與鄰接於該中央齒之內側的中央齒之外側之斜邊之延長線交叉的點設爲交叉點CS,則構成中央區210之中央大齒212、中央中齒214及中央小齒216具有關於所有中央齒之交叉點CS位於同一假想直線(以下亦簡稱爲「齒底線L1」)上之形狀。本實施方式中,關於中央大齒212、中央中齒214及中央小齒216,該中央齒之內側之斜邊及鄰接於該中央齒之內側的中央齒之外側之斜邊均爲圓弧狀。外側之斜邊與內側之斜邊係由構成互不相同之兩個圓之一部分的圓弧構成,前述外側之斜邊及內側之斜邊之延長線分別爲構成外側之斜邊及內側之斜邊的圓弧之延長線。但,該中央齒之內側之斜邊及鄰接於該中央齒之內側的中央齒之外側之斜邊亦可其中一斜邊爲弧狀而另一斜邊爲直線狀,或者亦可均爲直線狀。在斜邊爲直線狀時,將各直線之延長線之交點設爲交叉點CS。In this embodiment, as shown in FIG. 4, if any one of the central
另外,本實施方式中,構成中央區210之中央大齒212、中央中齒214及中央小齒216具有如下形狀:關於所有中央齒,將該中央齒之齒頂和鄰接於該中央齒的中央齒之齒頂連接之邊(以下亦簡稱爲「連接邊」)與平行於齒底線L1之假想直線相切的切點位於同一直線(以下亦簡稱爲「齒谷線L2'」)上。但,中央大齒212、中央中齒214及中央小齒216亦可關於所有中央齒使前述切點不位於同一齒谷線L2'上,亦可在中央區210設定多條齒谷線。In addition, in the present embodiment, the central
另外,本實施方式中,所有中央中齒214之齒頂位於同一假想直線(以下亦簡稱爲「中齒線L3」)上,所有中央大齒212之齒頂位於同一假想直線(以下亦簡稱爲「大齒線L4」)上。直線L1、L2'、L3及L4均平行,若將通過中央小齒216之齒頂且與直線L3及L4平行之假想直線設爲小齒線L5,則齒底線L1、齒谷線L2'、小齒線L5、中齒線L3及大齒線L4依次排列。In addition, in this embodiment, the tooth tops of all the central
中央大齒212係配置於中央區210中成爲亦爲切割刀片200之中央之V字頂點的位置(圖4中之中央大齒212a),且在成爲V字頂點之位置之兩外側配置有多個(圖4中之兩個中央大齒212b及212c)。中央大齒212係在中央切割之初期最先刺入包裝物50之中央齒,藉由從配置於成爲V字頂點之位置之中央大齒212a朝向兩外側依次刺入,而開始包裝物50之切斷。藉此,能以更少之應力開始中央切割之初期之切斷。另外,中央大齒212由於齒根之寬度更大,故而機械強度高。因此,藉由將多個中央大齒212配置於中央區210,亦可提高中央區210之機械強度而提高切割刀片200之耐久性。The central
中央中齒214跨及中央區210之整體而配置有多個(圖4中在單側爲四個)。中央中齒214係繼中央大齒212之後刺入包裝物50,而使包裝物50之切斷進一步進行。此時,藉由中央中齒214中之若干齒(圖4中之兩個中央中齒214a及中央中齒214b)配置於夾在兩個中央大齒212間之位置,可減小因齒根寬度寬之中央大齒212之寬大谷間在切斷時勾掛包裝物50所產生的對切斷之阻力,而使包裝物50之切斷更容易。另外,中央中齒214中之其他若干齒(圖4中之兩個中央中齒214c及中央中齒214d)配置於中央區210中側部區220側之區域,而使包裝物50之切斷從中央區210向側部區220順利地移行。A plurality of central
中央小齒216在中央區210中側部區220側之區域配置有一個或多個(圖4中在單側爲一個),與中央中齒214c及214d一併使包裝物50之切斷從中央區210向側部區220順利地移行。One or more central
關於構成中央區210之中央大齒212、中央中齒214及中央小齒216,該中央齒之外側之斜邊與在該中央齒之外側鄰接的中央齒之內側之斜邊均經由一個或多個圓弧而不具有彎折點地連接。另外,所謂不具有彎折點地連接係指該齒之外側之斜邊及在該齒之外側鄰接的齒之內側之斜邊雙方與前述圓弧之連接點均爲帶有弧度之交點,並未形成斜度不連續變化之頂點狀之折曲。根據本發明者等人之見解,與以各個中央齒之斜邊彼此或斜邊與齒谷具有一定角度之方式(以具有彎折點之方式)連接時相比,若各個中央齒之斜邊不具有彎折點地連接(在齒山之間不產生彎折點),則產生於破裂之匯合點之缺口的行進方向會更接近於包裝物50之寬度方向,從而復原時之縱向開裂變得更難產生。Regarding the central
另外,本實施方式中,將一中央齒之外側之斜邊與在該中央齒之外側鄰接的中央齒之內側之斜邊連接之前述圓弧的曲率半徑(Rc)均爲0.5 mm以上1.3 mm以下。若前述曲率半徑(Rc)爲0.5 mm以上,可使得在破裂之匯合點難以產生缺口,且可使產生於破裂之匯合點之缺口的行進方向更接近於包裝物50之寬度方向,從而更難產生復原時之縱向開裂。若前述曲率半徑(Rc)爲1.3 mm以下,則切斷時包裝物50難以勾掛於前述圓弧,從而可更容易進行切斷。根據前述觀點,曲率半徑Rc之優選範圍爲0.5 mm以上1.2 mm以下,更優選範圍爲0.6 mm以上1.2 mm以下。In addition, in this embodiment, the radius of curvature (Rc) of the aforementioned arc connecting the oblique side outside a central tooth and the oblique side inside the central tooth adjacent to the outside side of the central tooth is 0.5 mm or more and 1.3 mm. the following. If the aforementioned radius of curvature (Rc) is 0.5 mm or more, it can make it difficult to produce a gap at the rupture junction, and the travel direction of the gap generated at the rupture junction can be closer to the width direction of the
另外,本實施方式中,中央區210不具有外向齒,均爲上向齒。換言之,外向齒僅在外部區(本實施方式中僅在側部區220)配置。不具有前述外向齒之中央區210可使得在中央切割之切斷初期難以產生因包裝物50勾掛於外向齒而產生之切斷中斷。
(側部區)In addition, in the present embodiment, the
圖5係表示構成側部區220的側部齒之圖3中區域Y之局部放大圖。側部區220包含齒高相同之多個側部齒222,本實施方式中,前述多個側部齒222均爲齒頂朝向外側之外向齒。側部區220係中央切割時使在中央區210開始之包裝物50之切斷向包裝物50之端部方向進行的區域,且係端部切割時使在端部區230開始之包裝物50之切斷向包裝物50之中央方向進行的區域。側部區220中,構成之多個側部齒222均爲外向齒,因此尤其是端部切割時易於將側部齒222刺入包裝物50,從而難以產生因包裝物50相對於側部齒橫向滑動所產生之斜切。FIG. 5 is a partial enlarged view of the area Y in FIG. 3 showing the side teeth constituting the
本說明書中,如圖5所示,將構成側部區220之側部齒222(外向齒)的一個設爲T1,將鄰接配置於側部齒T1之外側之鄰接齒設爲T2,將鄰接配置於側部齒T1之內側之鄰接齒設爲T3。而且,如圖5所示,將側部齒T1之外側之斜邊之延長線與鄰接齒T2之內側之斜邊之延長線交叉的點設爲交叉點S1,將側部齒T1之內側之斜邊之延長線與鄰接齒T3之外側之斜邊之延長線交叉的點設爲交叉點S2。In this specification, as shown in FIG. 5, one of the side teeth 222 (outward teeth) constituting the
另外,將相對於連結交叉點S1和交叉點S2之假想直線(本實施方式中與齒底線L1爲同一直線)從側部齒T1之齒頂垂落之垂線與前述假想直線(齒底線L1)交叉的點設爲交叉點S3。另外,將S1與S3之間的距離設爲D1,將S1與S2之間的距離設爲D2。In addition, a perpendicular line falling from the tooth tip of the side tooth T1 with respect to the imaginary straight line connecting the intersection point S1 and the intersection point S2 (the same straight line as the tooth bottom line L1 in this embodiment) crosses the aforementioned imaginary straight line (tooth bottom line L1) The point of is set as the intersection point S3. In addition, let the distance between S1 and S3 be D1, and let the distance between S1 and S2 be D2.
此時,本實施方式中,D1與D2之比率滿足以下之式1。
D1/D2=0.20以上0.40以下…(式1)At this time, in this embodiment, the ratio of D1 to D2 satisfies the following
若D1/D2爲0.40以下,則側部齒T1(外向齒)之齒頂更朝向外側,因而在端部切割時能以更少之應力將側部齒T1刺入包裝物50,從而可使包裝物50之切斷容易地進行。因此,可抑制因端部切割時側部齒T1未對包裝物50充分刺入而包裝物50相對於側部齒橫向滑動所引起之斜切之產生。若D1/D2爲0.20以上,則側部齒T1(外向齒)之齒頂不會過度朝向外側,因此在中央切割時,在中央區210開始之包裝物50之切斷之進行難以被側部齒T1妨礙,從而前述切斷更容易向端部方向進行。而且,藉此可抑制端部切割時之斜切之產生。就端部切割與中央切割之任一切割而言均可良好切割之更優選範圍爲D1/D2=0.25以上0.38以下,進而優選範圍爲D1/D2=0.26以上0.37以下。If D1/D2 is 0.40 or less, the tooth tip of the side tooth T1 (outward tooth) is more toward the outside, so the side tooth T1 can be pierced into the
另外,本說明書中,關於中央齒、側部齒及端部齒之所有齒,所謂「外向齒」係指將該齒設爲T1且利用前述方法算出之D1/D2小於0.50的齒,所謂「上向齒」係指D1/D2爲0.50以上(優選爲0.75以下)的齒。In addition, in this specification, regarding all the teeth of the central tooth, the side tooth and the end tooth, the so-called "outward tooth" refers to the tooth whose tooth is set to T1 and the D1/D2 calculated by the aforementioned method is less than 0.50, the so-called " "Upward tooth" refers to a tooth with D1/D2 of 0.50 or more (preferably 0.75 or less).
關於構成側部區220之多個側部齒222(外向齒),該側部齒(外向齒)之外側之斜邊與在該側部齒之外側鄰接的側部齒(外向齒)之內側之斜邊均經由一個或多個圓弧而不具有彎折點地連接。藉此,包裝物50之切斷沿著斜邊產生,難以向捲繞體方向進行,藉此缺口(裂口)之行進方向更接近於包裝物50之寬度方向,復原時難以產生向捲繞體方向之縱向開裂,回捲時之復原變得更容易。Regarding the plurality of side teeth 222 (outward teeth) constituting the
本實施方式中,關於任一側部齒,將側部齒T1之外側之斜邊與鄰接齒T2之內側之斜邊連接之前述圓弧的曲率半徑(R1)均爲0.3 mm以上1.3 mm以下。若前述曲率半徑(R1)爲0.3 mm以上,則在破裂之匯合點難以產生縱向開裂,可更容易進行回捲時之復原。若前述曲率半徑(R1)爲1.3 mm以下,則包裝物50難以勾掛於前述圓弧,在中央切割及端部切割之任一切割時均更容易進行切斷。根據前述觀點,曲率半徑R1之優選範圍爲0.35 mm以上1.2 mm以下,更優選範圍爲0.35 mm以上1.0 mm以下。In this embodiment, regarding any side tooth, the radius of curvature (R1) of the aforementioned arc connecting the hypotenuse outside the side tooth T1 and the hypotenuse inside the adjacent tooth T2 is 0.3 mm or more and 1.3 mm or less . If the aforementioned radius of curvature (R1) is 0.3 mm or more, it is difficult to produce longitudinal cracks at the confluence point of the cracks, and it is easier to recover during rewinding. If the aforementioned radius of curvature (R1) is 1.3 mm or less, it is difficult for the
另外,側部齒T1之外側之斜邊之曲率半徑R優選爲1.0 mm以上10.0 mm以下,更優選爲1.5 mm以上8.0 mm以下。另外,鄰接齒T2之內側之斜邊之曲率半徑R優選爲1.0 mm以上7.0 mm以下,更優選爲1.5 mm以上6.0 mm以下。藉由將各曲率半徑設爲前述值,可減小因連接邊之底部附近在切斷時勾掛包裝物50所產生之對切斷之阻力而使包裝物50之切斷更容易,且在破裂之匯合點難以產生縱向開裂,可更容易進行回捲時之復原。In addition, the curvature radius R of the hypotenuse on the outer side of the side tooth T1 is preferably 1.0 mm or more and 10.0 mm or less, and more preferably 1.5 mm or more and 8.0 mm or less. In addition, the radius of curvature R of the oblique side adjacent to the inner side of the tooth T2 is preferably 1.0 mm or more and 7.0 mm or less, and more preferably 1.5 mm or more and 6.0 mm or less. By setting each radius of curvature to the aforementioned value, the resistance to cutting caused by the hooking of the
另外,本實施方式中,與將側部齒T1之齒頂與鄰接齒T2之齒頂連結的連接邊相切且平行於齒底線L1之假想直線係與齒谷線L2'平行且與齒谷線L2'不同之直線(以下亦簡稱爲「齒谷線L2」)。本實施方式中,齒谷線L2位於齒谷線L2'與小齒線L5之間(參照圖4)。另外,將側部齒222(外向齒)之齒頂連結之假想直線係與中齒線L3爲同一直線。另外,將側部齒之齒頂連結之假想直線之位置並無特別限定,只要成爲與小齒線L5爲同一直線、或高於小齒線L5且低於大齒線L4之位置之直線即可。另外,圖5中,所有側部齒之齒頂位於中齒線L3上,但所有側部齒之齒頂亦可不位於同一假想直線(圖5中爲中齒線L3)上。換言之,側部區220亦可具有從齒底線L1至側部齒之齒頂爲止的距離不同之多個側部齒。
(端部區)In addition, in this embodiment, an imaginary straight line tangent to the connecting edge connecting the tooth top of the side tooth T1 and the tooth top of the adjacent tooth T2 and parallel to the tooth bottom line L1 is parallel to the valley line L2' and to the tooth valley Lines L2' different straight lines (hereinafter also referred to as "valley line L2"). In this embodiment, the valley line L2 is located between the valley line L2' and the small tooth line L5 (refer FIG. 4). In addition, the imaginary straight line connecting the tooth tips of the side teeth 222 (outward teeth) is the same straight line as the middle tooth line L3. In addition, the position of the imaginary straight line connecting the tooth tips of the side teeth is not particularly limited, as long as it is the same straight line as the small tooth line L5, or a straight line higher than the small tooth line L5 and lower than the large tooth line L4. can. In addition, in Figure 5, the tooth tops of all the side teeth are located on the mid-tooth line L3, but the tooth tops of all the side teeth may not be located on the same imaginary straight line (the mid-tooth line L3 in Figure 5). In other words, the
圖6係表示構成端部區230的齒之圖3中區域Z之局部放大圖。端部區230包含齒高不同之多個端部齒,本實施方式中,前述多個端部齒均爲上向齒。另外,前述多個端部齒係以連續之三個端部齒之齒頂不位於同一直線上之方式交錯地配置。端部區230係端部切割時齒頂最先到達包裝物50之區域。此時,藉由連續之三個端部齒之齒頂不位於同一直線上,而從齒高較高之端部齒依次到達包裝物50,從而可減少同時刺入包裝物50之端部齒之個數。藉此,用於將包裝物50切斷之應力僅分散於較慣常少之個數之端部齒,因而更容易將端部區230中之端部齒之齒頂刺入包裝物50,可在端部切割之初期以更少之應力開始包裝物50之切斷。因此,端部區230可減小端部切割之初期之對使用者之阻力感。6 is a partial enlarged view of the area Z in FIG. 3 showing the teeth constituting the
另一方面,端部區230係中央切割時最後進行包裝物50之切斷之區域。此時,亦當使包裝容器10向下旋轉時,端部區230可使各個端部齒依次刺入包裝物50,而使從中央區210向側部區220進行之包裝物50之切斷順利地進行。On the other hand, the
具體而言,端部區230具有齒高大之多個端大齒232、及齒高較端大齒232小之多個端中齒234。Specifically, the
本實施方式中,端大齒232在端部區230配置有多個(圖6中之兩個端大齒232a及232b)。端大齒232係在端部切割之初期最先刺入包裝物50的齒,藉由從配置於成爲切割刀片200之端部之位置的端大齒232朝向中央部側依次刺入,而開始包裝物50之切斷。藉此,能以更少之應力開始端部切割之初期之切斷。而且,端大齒232由於齒根之寬度更大,故而機械強度高。因此,藉由將多個端大齒232配置於端部區230,可提高端部區230之機械強度而提高切割刀片200之耐久性。In this embodiment, a plurality of
端中齒234係繼端大齒232之後刺入包裝物50而使包裝物50之切斷進一步進行。藉由端中齒234中之若干端中齒(圖6中之端中齒234a)配置於夾在兩個端大齒232間之位置,可減小因齒根寬度寬之端大齒232之寬大谷間在切斷時勾掛包裝物50所產生的對切斷之阻力,而使包裝物50之切斷更容易。另外,端中齒234中之其他端中齒(圖6中之端中齒234b)配置於端部區230中之側部區220側之區域,而使包裝物50之切斷從端部區230向側部區220順利地移行。The middle end teeth 234 pierce the
關於構成端部區230之端大齒232及端中齒234,該端部齒之外側之斜邊與在該端部齒之外側鄰接的端部齒之內側之斜邊均經由一個或多個圓弧而不具有彎折點地連接。若如前述般各個端部齒之斜邊經由圓弧而連接,則在破裂之匯合點難以產生縱向開裂,可更容易進行回捲時之復原。Regarding the end
本實施方式中,端部齒之外側之斜邊之曲率半徑R均優選爲1.0 mm以上10.0 mm以下,更優選爲1.5 mm以上8.0 mm以下。另外,鄰接於前述端部齒的齒之內側之斜邊之曲率半徑R優選爲1.0 mm以上7.0 mm以下,更優選爲1.5 mm以上6.0 mm以下。藉由將各曲率半徑設爲前述值,可減小因連接邊之底部附近在切斷時勾掛包裝物50所產生之對切斷之阻力而使包裝物50之切斷更容易,且可使產生於薄膜破裂之匯合點之缺口的行進方向更接近於包裝物50之寬度方向,從而難以產生使回捲之包裝物復原時(復原時)之縱向開裂。In this embodiment, the radius of curvature R of the hypotenuse on the outer side of the end tooth is preferably 1.0 mm or more and 10.0 mm or less, more preferably 1.5 mm or more and 8.0 mm or less. In addition, the radius of curvature R of the oblique side adjacent to the inner side of the tooth of the end tooth is preferably 1.0 mm or more and 7.0 mm or less, and more preferably 1.5 mm or more and 6.0 mm or less. By setting each radius of curvature to the aforementioned value, the resistance to cutting caused by hooking the
另外,本實施方式中,將一端部齒之外側之斜邊與在該端部齒之外側鄰接的端部齒之內側之斜邊連接之前述圓弧的曲率半徑(R2)均爲0.3 mm以上1.3 mm以下。若前述曲率半徑(R2)爲0.3 mm以上,可使得在破裂之匯合點難以產生缺口。若前述曲率半徑(R2)爲1.3 mm以下,則在端部切割之初期、中央切割之最後之切斷時,包裝物50難以勾掛於前述圓弧,而可更容易進行包裝物50之切斷。根據前述觀點,曲率半徑R2之優選範圍爲0.4 mm以上1.2 mm以下,更優選範圍爲0.5 mm以上1.2 mm以下。In addition, in this embodiment, the radius of curvature (R2) of the aforementioned arc connecting the hypotenuse outside of one end tooth and the hypotenuse inside the end tooth adjacent to the outside of the end tooth is 0.3 mm or more. Below 1.3 mm. If the aforementioned radius of curvature (R2) is 0.3 mm or more, it can make it difficult to produce a gap at the junction of the fracture. If the aforementioned radius of curvature (R2) is 1.3 mm or less, it is difficult for the
另外,本實施方式中,如圖6所示,關於構成端部區230之端大齒232及端中齒234之任一端部齒,若將該端部齒之內側之斜邊之延長線與鄰接於該端部齒之內側的端部齒之外側之斜邊之延長線交叉的點設爲交叉點PS,則構成端部區230之端大齒232及端中齒234具有關於所有端部齒之交叉點PS位於齒底線L1上之形狀。另外,關於構成端部區230之端大齒232及端中齒234之所有端部齒,具有如下形狀:將該端部齒之齒頂和在該端部齒之外側鄰接的端部齒之齒頂連結之連接邊與和齒谷線L2平行且和齒谷線L2不同之直線(以下亦簡稱爲「齒谷線L2''」)相切。但,端大齒232及端中齒234亦可關於所有齒使前述切點不位於同一齒谷線L2''上,亦可在端部區230設定多條齒谷線。本實施方式中,齒谷線L2''位於齒谷線L2與齒底線L1之間(參照圖6)。另外,將端大齒232之齒頂連結之假想直線與大齒線L4爲同一直線,將端中齒234之齒頂連結之假想直線與中齒線L3爲同一直線。另外,將端大齒232之齒頂連結之假想直線之位置並無特別限定,只要成爲高於中齒線L3之位置之直線即可。另外,將端中齒234之齒頂連結之假想直線之位置亦無特別限定,只要成爲與中齒線L3爲同一直線、或高於小齒線L5且低於大齒線L4之位置之直線即可。
[第2實施方式]In addition, in this embodiment, as shown in FIG. 6, regarding any one of the end
圖7係表示本發明之第2實施方式之切割刀片300之示意性構成的前視圖。切割刀片300係與第1實施方式中之切割刀片200同樣地,具有中央區310、配置於中央區310之外側之一對側部區320、及在側部區320之外側配置於切割刀片300之端部之一對端部區330。本實施方式之切割刀片300中,僅構成側部區320及端部區330的齒之形狀與第1實施方式中之切割刀片300不同。因此,以下關於與第1實施方式中之切割刀片300之共同點省略說明。Fig. 7 is a front view showing a schematic configuration of a
如下所述,本實施方式中,切割刀片300具有中央區310、側部區320(側部連接區域320a及側部主要區域320b)、以及端部區330(端部連接區域330a及端部主要區域330b)。中央區310係切割刀片300之寬度方向上之整個長度之5至20%之範圍,側部連接區域320a係中央區310之外側且切割刀片300之寬度方向上之整個長度之10至20%之範圍,側部主要區域320b係側部連接區域320a之外側且切割刀片200之寬度方向上之整個長度之35至50%之範圍,端部連接區域330a係側部主要區域320b之外側且切割刀片300之寬度方向上之整個長度之5至10%之範圍,端部主要區域330b係端部連接區域330a之外側且切割刀片300之寬度方向上之整個長度之10至25%之範圍。As described below, in this embodiment, the
另外,本實施方式中,對具有中央區310、側部區320、端部區330之構成進行說明,但亦可爲不具有端部區330而包含中央區310與側部區320之構成。此時,中央區310係切割刀片300之寬度方向上之整個長度之20至30%之範圍,側部區320係中央區310之外側且切割刀片300之寬度方向上之整個長度之70至80%之範圍。
(中央區)In addition, in the present embodiment, the configuration having the
中央區310具有齒高最大之多個中央大齒312、齒高較中央大齒312小之多個中央中齒314、及齒高較中央中齒314小之中央小齒316。該等中央齒與第1實施方式相同,因而省略詳細說明。
(側部區)The
如圖7所示,本實施方式中,側部區320具有作爲與中央區310之連接區域之側部連接區域320a、及具有多個外向齒之側部主要區域320b。As shown in FIG. 7, in this embodiment, the
圖8係表示構成中央區310與側部區320(側部連接區域320a)之交界附近的齒之圖7中區域S之局部放大圖。圖9係表示構成側部連接區域320a與側部主要區域320b之交界附近的齒之圖7中區域T之局部放大圖。FIG. 8 is a partial enlarged view of the area S in FIG. 7 showing teeth near the boundary between the
側部連接區域320a包含齒高相同之多個側部齒322a,前述多個側部齒322a均爲上向齒。包含多個上向齒之側部連接區域320a使包裝物50之切斷易於在與同樣包含上向齒之中央區310之間進行,且使包裝物50之切斷亦易於在與齒高相同之側部主要區域320b之間進行。因此,側部連接區域320a使利用中央切割之包裝物50之切斷易於從中央區310向側部主要區域320b進行,且使利用端部切割之包裝物50之切斷易於從側部主要區域320b向中央區310進行。The
關於構成側部連接區域320a之多個側部齒322a,該側部齒之外側之斜邊與在該側部齒之外側鄰接的側部齒之內側之斜邊均經由一個或多個圓弧而不具有彎折點地連接。藉此,在包裝物50之切斷時切割刀片難以勾掛包裝物50,且難以產生縱向開裂,因而回捲時之復原變得更容易。Regarding the plurality of
另外,本實施方式中,亦關於任一側部齒(外向齒及上向齒兩者),將側部齒322a之外側之斜邊與在該側部齒之外側鄰接的側部齒之內側之斜邊連接之前述圓弧的曲率半徑(R1')均爲0.3 mm以上1.3 mm以下。若前述曲率半徑(R1')爲0.3 mm以上,則在破裂之匯合點難以產生縱向開裂,可更容易進行回捲時之復原。若前述曲率半徑(R1’)爲1.3 mm以下,則包裝物50難以勾掛於前述圓弧,在中央切割及端部切割之任一切割時均更容易進行切斷。根據前述觀點,曲率半徑R1'之優選範圍爲0.35 mm以上1.2 mm以下,更優選範圍爲0.35 mm以上1.0 mm以下。In addition, in this embodiment, regarding either side tooth (both the outward tooth and the upward tooth), the hypotenuse on the outer side of the
側部主要區域320b包含齒高相同之多個側部齒322b,前述多個側部齒均爲外向齒。具有多個外向齒之側部主要區域320b與第1實施方式中之側部區220同樣地,尤其是端部切割時易於將側部齒刺入包裝物50,而難以產生因包裝物50相對於側部齒橫向滑動所引起之斜切。The
另外,側部主要區域320b所具有之多個側部齒322b中配置於最靠側部連接區域320a側之側部齒(側部連接齒322c)的齒寬小於側部連接區域320a所具有之側部齒322a及側部主要區域320b所具有之其他側部齒322b的齒寬。此種側部連接齒322c主要具有將包含上向齒之側部連接區域320a與包含外向齒之側部主要區域320b之間的切斷過渡之作用,可抑制該區域中之包裝物之橫向滑動。In addition, the side teeth (
本實施方式中,亦如圖9所示,將配置於側部主要區域320b之側部齒(作爲外向齒之側部齒322b或側部連接齒322c)的一個設爲T1,將鄰接配置於側部齒T1之外側的鄰接齒設爲T2,將鄰接配置於側部齒T1之內側的鄰接齒設爲T3。而且,如圖9所示,將側部齒T1之外側之斜邊之延長線與鄰接齒T2之內側之斜邊之延長線交叉的點設爲交叉點S1,將側部齒T1之內側之斜邊之延長線與鄰接齒T3之外側之斜邊之延長線交叉的點設爲交叉點S2。In this embodiment, also as shown in FIG. 9, one of the side teeth (the
另外,本實施方式中,將相對於連結交叉點S1和交叉點S2之假想直線(本實施方式中亦與齒底線L1爲同一直線)從側部齒T1之齒頂垂落之垂線與前述假想直線(齒底線L1)交叉的點設爲交叉點S3。另外,將S1與S3之間的距離設爲D1,將S1與S2之間的距離設爲D2。此時,側部區320中,D1與D2之比率滿足以下之式1。
D1/D2=0.20以上0.40以下…(式1)In addition, in this embodiment, the vertical line that hangs from the tooth tip of the side tooth T1 with respect to the imaginary straight line connecting the intersection S1 and the intersection S2 (also the same straight line as the bottom line L1 in this embodiment) and the aforementioned imaginary straight line The intersection point (tooth bottom line L1) is set to intersection point S3. In addition, let the distance between S1 and S3 be D1, and let the distance between S1 and S2 be D2. At this time, in the
若D1/D2爲0.40以下,則側部齒T1(外向齒)之齒頂更朝向外側,因而在端部切割時能以更少之應力將側部齒T1刺入包裝物50,從而可使包裝物50之切斷容易地進行。因此,可抑制因端部切割時側部齒T1未對包裝物50充分刺入而包裝物50相對於側部齒橫向滑動所引起之斜切之產生。若D1/D2爲0.20以上,則側部齒T1(外向齒)之齒頂不會過度朝向外側,因此在中央切割時,在中央區210開始之包裝物50之切斷之進行難以被側部齒T1妨礙,從而前述切斷更容易向端部方向進行。而且,藉此可抑制端部切割時之斜切之產生。就端部切割與中央切割之任一切割而言均可良好切割之更優選範圍爲D1/D2=0.25以上0.38以下,進而優選範圍爲D1/D2=0.26以上0.37以下。If D1/D2 is 0.40 or less, the tooth tip of the side tooth T1 (outward tooth) is more toward the outside, so the side tooth T1 can be pierced into the
本實施方式中,亦關於構成側部主要區域320b之多個側部齒(外向齒),該側部齒(外向齒)之外側之斜邊與在該側部齒之外側鄰接的側部齒(外向齒)之內側之斜邊均經由一個或多個圓弧而不具有彎折點地連接。藉此,在包裝物50之切斷時切割刀片難以勾掛包裝物50,且難以產生縱向開裂,因而回捲時之復原變得更容易。In this embodiment, the side teeth (external teeth) constituting the side
另外,本實施方式中,亦關於任一側部齒,將側部齒T1之外側之斜邊與鄰接齒T2之內側之斜邊連接之前述圓弧的曲率半徑(R1)均爲0.3 mm以上1.3 mm以下。若前述曲率半徑(R1)爲0.3 mm以上,則在破裂之匯合點難以產生縱向開裂,可更容易進行回捲時之復原。若前述曲率半徑(R1)爲1.3 mm以下,則包裝物50難以勾掛於前述圓弧,在中央切割及端部切割之任一切割時均更容易進行切斷。根據前述觀點,曲率半徑R1之優選範圍爲0.35 mm以上1.2 mm以下,更優選範圍爲0.35 mm以上1.0 mm以下。In addition, in this embodiment, regarding either side tooth, the radius of curvature (R1) of the arc connecting the hypotenuse outside of the side tooth T1 and the hypotenuse inside the adjacent tooth T2 is 0.3 mm or more. Below 1.3 mm. If the aforementioned radius of curvature (R1) is 0.3 mm or more, it is difficult to produce longitudinal cracks at the confluence point of the cracks, and it is easier to recover during rewinding. If the aforementioned radius of curvature (R1) is 1.3 mm or less, it is difficult for the
另外,本實施方式中,側部齒T1之外側之斜邊之曲率半徑R亦優選爲1.0 mm以上10.0 mm以下,更優選爲1.5 mm以上8.0 mm以下。另外,鄰接齒T2之內側之斜邊之曲率半徑R優選爲1.0 mm以上7.0 mm以下,更優選爲1.5 mm以上6.0 mm以下。藉由將各曲率半徑設爲前述值,可減小因連接邊之底部附近在切斷時勾掛包裝物50所產生之對切斷之阻力而使包裝物50之切斷更容易,且在破裂之匯合點難以產生縱向開裂,可更容易進行回捲時之復原。In addition, in this embodiment, the radius of curvature R of the hypotenuse on the outer side of the side tooth T1 is also preferably 1.0 mm or more and 10.0 mm or less, and more preferably 1.5 mm or more and 8.0 mm or less. In addition, the radius of curvature R of the oblique side adjacent to the inner side of the tooth T2 is preferably 1.0 mm or more and 7.0 mm or less, and more preferably 1.5 mm or more and 6.0 mm or less. By setting each radius of curvature to the aforementioned value, the resistance to cutting caused by the hooking of the
另外,本實施方式中,與將側部齒T1之齒頂與鄰接齒T2之齒頂連結之連接邊相切且平行於底線L1的假想直線係與齒谷線L2'平行且與齒谷線L2'不同之直線(齒谷線L2a及齒谷線L2b)。本實施方式中,齒谷線L2a及齒谷線L2b亦位於齒谷線L2'與小齒線L5之間。另外,將構成側部連接區域320a之多個側部齒設爲側部齒T1及鄰接齒T2時之齒谷線L2a、與將構成側部主要區域320b之多個側部齒設爲側部齒T1及鄰接齒T2時之齒谷線L2b係相互平行且不同之直線。本實施方式中,齒谷線L2b位於齒谷線L2a與齒谷線L2'之間。另一方面,關於構成側部連接區域320a之多個側部齒322a,該側部齒322a之內側之斜邊之延長線與在該側部齒322a之內側鄰接的側部齒之外側之斜邊之延長線交叉的交叉點位於與齒底線L1平行且與齒底線L1不同之直線(齒底線L1')上。本實施方式中,齒底線L1'位於齒谷線L2'與齒谷線L2之間。另外,將側部齒322a、側部齒322b及側部連接齒322c之齒頂連結之假想直線與中齒線L3爲同一直線。另外,將該等側部齒之齒頂連結之假想直線之位置並無特別限定,只要成爲與小齒線L5爲同一直線、或高於小齒線L5且低於大齒線L4之位置之直線即可。另外,圖8及圖9中,所有側部齒之齒頂位於中齒線L3上,但所有側部齒之齒頂亦可不位於同一假想直線(圖8及圖9中爲中齒線L3)上。換言之,側部區320亦可具有從齒底線L1至側部齒之齒頂爲止的距離不同之多個側部齒。
(端部區)In addition, in this embodiment, an imaginary straight line tangent to the connecting edge connecting the tooth top of the side tooth T1 and the tooth top of the adjacent tooth T2 and parallel to the bottom line L1 is parallel to the valley line L2' and to the valley line L2'different straight lines (tooth valley line L2a and tooth valley line L2b). In this embodiment, the valley line L2a and the valley line L2b are also located between the valley line L2' and the small tooth line L5. In addition, the valley line L2a when the plurality of side teeth constituting the
如圖7所示,本實施方式中,端部區330具有作爲與側部區320(側部主要區域320b)之連接區域之端部連接區域330a、及具有多個外向齒之端部主要區域330b。As shown in FIG. 7, in this embodiment, the
圖10係表示構成端部連接區域330a及端部主要區域330b的齒之圖7中區域U之局部放大圖。Fig. 10 is a partial enlarged view of the area U in Fig. 7 showing the teeth constituting the
端部連接區域330a包含齒高不同之多個端部齒,前述多個端部齒均爲外向齒。另外,前述多個端部齒係以連續之三個端部齒之齒頂不位於同一直線上之方式配置。具體而言,端部連接區域330a具有齒高與側部主要區域所具有之側部齒322b相同之多個連接中齒336、及齒高在連接中齒336與端部主要區域330b所具有之端大齒332之間的多個連接大齒338。而且,連接中齒336與連接大齒338交替地配置。另外,將連接中齒336之齒頂連結之假想直線與中齒線L3爲同一直線,將連接大齒338之齒頂連結之假想直線L6係高於中齒線L3且低於大齒線L4之位置之直線。The
端部連接區域330a藉由具有前述齒高不同之多個端部齒,而使包裝物50之切斷從齒高更低之側部主要區域320b向齒高更高之端部主要區域330b(或者從端部主要區域330b向側部主要區域320b)順利地移行。The
端部主要區域330b係與第1實施方式同樣地包含多個端大齒332及多個端中齒334。但,本實施方式中,端大齒332及端中齒334均爲外向齒。此種端部區330在端部切割時易於將端部齒刺入,而難以產生因包裝物50相對於端部齒橫向滑動所引起之斜切。The end
另外,如圖10所示,將端部主要區域330b所具有之作爲一外向齒之端部齒(圖10中爲端中齒334)設爲T4,將鄰接配置於端部齒T4之外側的鄰接齒設爲T5(圖10中爲端大齒332b),將鄰接配置於端部齒T4之內側的鄰接齒設爲T6(圖10中爲端大齒332a)。另外,如圖10所示,將端部齒T4之外側之斜邊之延長線與鄰接齒T5之內側之斜邊之延長線交叉的點設爲交叉點S4,將端部齒T4之內側之斜邊之延長線與鄰接齒T6之外側之斜邊之延長線交叉的點設爲交叉點S5。In addition, as shown in FIG. 10, the end tooth (the end
此時,將相對於連結交叉點S4和交叉點S5之假想直線(本實施方式中與齒底線L1爲同一直線)從端部齒T4之齒頂垂落之垂線與前述假想直線(齒底線L1)交叉的點設爲交叉點S6。另外,將S4與S6之間的距離設爲D3,將S4與S5之間的距離設爲D4。此時,D3與D4之比率滿足以下之式2。 D3/D4=0.35以上且小於0.50…(式2)At this time, the vertical line that hangs from the tooth tip of the end tooth T4 with respect to the imaginary straight line connecting the intersection S4 and the intersection S5 (the same straight line as the tooth bottom line L1 in this embodiment) and the aforementioned imaginary straight line (tooth bottom line L1) The crossing point is referred to as crossing point S6. In addition, the distance between S4 and S6 is D3, and the distance between S4 and S5 is D4. At this time, the ratio of D3 to D4 satisfies Equation 2 below. D3/D4=0.35 or more and less than 0.50...(Equation 2)
若D3/D4小於0.50,則端部區330所具有之外向齒之齒頂朝向外側,因而在端部切割時,能以更少之應力將端部齒刺入包裝物50,可使包裝物50之切斷容易地進行。因此,可抑制因端部齒未對包裝物50充分刺入而包裝物50相對於端部齒橫向滑動所引起之斜切之產生。若D3/D4爲0.35以上,則端部區330所具有之外向齒之齒頂不會過度朝向外側,因此在中央切割時,在中央區310開始之包裝物50之切斷難以被端部區330之外向齒妨礙,而使前述切斷更順利地進行至包裝物50之端部。就端部切割與中央切割之任一切割而言均可良好切割之更優選範圍爲D3/D4=0.37以上0.495以下,進而優選範圍爲D3/D4=0.40以上0.49以下。另外,關於端部主要區域330b所具有之外向齒之D3/D4之值優選大於關於側部主要區域320b所具有之外向齒之D1/D2之值。If D3/D4 is less than 0.50, the tooth tops of the outward teeth in the
如此,藉由使端部主要區域330b所具有之外向齒之D3/D4大於側部主要區域320b所具有之外向齒之D1/D2,在端部切割時更易將端部齒刺入包裝物50,從而更有效地抑制端部切割時之斜切之產生。In this way, by making the D3/D4 of the outward teeth in the
另外,本實施方式中,與將端部齒T4與鄰接齒T5連接之連接邊相切且平行於齒底線L1之假想直線亦與齒谷線L2''爲同一直線。In addition, in this embodiment, the imaginary straight line tangent to the connecting edge connecting the end tooth T4 and the adjacent tooth T5 and parallel to the tooth bottom line L1 is also the same straight line as the valley line L2".
另外,將端部連接區域330a所具有之連接中齒336或連接大齒338設爲端部齒T4而同樣地規定時之D3/D4亦優選處於與將端部主要區域330b所具有之端大齒332或端中齒334設爲端部齒T4而規定時之D3/D4相同的範圍內。但,此時,藉由相對於端部連接區域330a中配置於側部主要區域320b側之連接中齒336a及連接大齒338a之D3/D4,使端部連接區域330a中配置於端部主要區域330b側之連接中齒336b及連接大齒338b之D3/D4更大(更接近於端部主要區域330b所具有之外向齒之D3/D4),可使包裝物50之切斷從側部主要區域320b向端部區330(或者從端部區330向側部主要區域320b)順利地移行。In addition, the connecting
另外,此時,側部主要區域320b中之外向齒之D1/D2、端部連接區域330a中之外向齒之D3/D4、及端部主要區域330b中之外向齒之D3/D4優選爲依次變大。In addition, at this time, D1/D2 of the outer teeth in the side
關於構成端部區330(端部連接區域330a及端部主要區域330b)之端部齒,該端部齒之外側之斜邊與在該端部齒之外側鄰接的端部齒之內側之斜邊均經由一個或多個圓弧而不具有彎折點地連接。若如前述般各個端部齒之斜邊經由圓弧而連接,則在破裂之匯合點難以產生縱向開裂,可更容易進行回捲時之復原。Regarding the end teeth constituting the end area 330 (the
本實施方式中,將一端部齒之外側之斜邊與在該端部齒之外側鄰接的端部齒之內側之斜邊連接之前述圓弧的曲率半徑(R2)亦均爲0.3 mm以上1.3 mm以下。若前述曲率半徑(R2)爲0.3 mm以上,可使得在破裂之匯合點難以產生缺口。若前述曲率半徑(R2)爲1.3 mm以下,則在端部切割之初期、中央切割之最後之切斷時,包裝物50難以勾掛於前述圓弧,可更容易進行切斷。根據前述觀點,曲率半徑R2之優選範圍爲0.4 mm以上1.2 mm以下,更優選範圍爲0.5 mm以上1.2 mm以下。In this embodiment, the radius of curvature (R2) of the aforementioned arc connecting the hypotenuse on the outer side of one end tooth and the hypotenuse on the inner side of the end tooth adjacent to the outer side of the end tooth is also 0.3 mm or more and 1.3 mm below. If the aforementioned radius of curvature (R2) is 0.3 mm or more, it can make it difficult to produce a gap at the junction of the fracture. If the aforementioned radius of curvature (R2) is 1.3 mm or less, it is difficult for the
另外,將任一端部齒設爲端部齒T4時,端部齒T4之外側之斜邊之曲率半徑R均優選爲1.0 mm以上10.0 mm以下,更優選爲1.5 mm以上8.0 mm以下。鄰接齒T5之內側之斜邊之曲率半徑R優選爲1.0 mm以上7.0 mm以下,更優選爲1.5 mm以上6.0 mm以下。在端部齒T4之外側之斜邊利用圓弧連接時,前述連接之圓弧之曲率半徑R係較端部齒T4之外側之斜邊之曲率半徑R及鄰接齒T5之內側之斜邊之曲率半徑R的任一者小之值,且優選爲0.2 mm以上2.0 mm以下,更優選爲0.4 mm以上1.2 mm以下。藉由將各曲率半徑設爲前述值,可減小因連接邊之底部附近在切斷時勾掛包裝物50所產生之對切斷之阻力而使包裝物50之切斷更容易,且可使產生於薄膜破裂之匯合點之缺口的行進方向更接近於包裝物50之寬度方向,從而難以產生使回捲之包裝物復原時(復原時)之縱向開裂。
[第3實施方式]In addition, when either end tooth is the end tooth T4, the curvature radius R of the hypotenuse outside the end tooth T4 is preferably 1.0 mm or more and 10.0 mm or less, and more preferably 1.5 mm or more and 8.0 mm or less. The radius of curvature R of the oblique side adjacent to the inner side of the tooth T5 is preferably 1.0 mm or more and 7.0 mm or less, and more preferably 1.5 mm or more and 6.0 mm or less. When the hypotenuse on the outer side of the end tooth T4 is connected by a circular arc, the radius of curvature R of the arc of the aforementioned connection is greater than the curvature radius R of the hypotenuse on the outer side of the end tooth T4 and the hypotenuse on the inner side of the adjacent tooth T5 Any one of the radius of curvature R is a small value, and is preferably 0.2 mm or more and 2.0 mm or less, and more preferably 0.4 mm or more and 1.2 mm or less. By setting each radius of curvature to the aforementioned value, the resistance to cutting caused by hooking the
圖11係示意性表示本發明之第3實施方式之包裝容器20之構成的關閉蓋部時之立體圖。Fig. 11 is a perspective view schematically showing the configuration of the
本實施方式之包裝容器於具有中央區410、側部區420及端部區430爲直線狀之切割刀片400之方面,與第1實施方式或第2實施方式之包裝容器不同。另外,中央區410、側部區420及端部區430各自所具有的齒之形狀可設爲與第1實施方式或第2實施方式相同。The packaging container of this embodiment is different from the packaging container of the first embodiment or the second embodiment in that the
本實施方式中,掩蓋片124之前端125及切割刀片400具有直線狀之形狀。具體而言,切割刀片400具有從切割刀片400之中央朝向兩端側配置之多個齒。而且,前述多個齒係以設定於切割刀片400之齒底線L1、齒谷線L2、小齒線L5、中齒線L3及大齒線L4均成爲直線之方式配置。In this embodiment, the
根據本實施方式之包裝容器20,在端部切割時,配置於與開始切割之側之端部爲相反側之側部區的外向齒難以妨礙切斷之進行,因此可更容易進行端部切割。
[第4實施方式]According to the
圖12係示意性表示本發明之第4實施方式之包裝容器30之構成的關閉蓋部時之立體圖。Fig. 12 is a perspective view schematically showing the configuration of the
本實施方式之包裝容器在具有中央區510、側部區520及端部區530均彎曲之切割刀片500之方面,與第1實施方式或第2實施方式之包裝容器不同。另外,中央區510、側部區520及端部區530各自所具有的齒之形狀可設爲與第1實施方式或第2實施方式相同。The packaging container of this embodiment is different from the packaging container of the first embodiment or the second embodiment in that it has a
本實施方式中,掩蓋片124之前端125及切割刀片500具有大致M字狀之形狀。具體而言,切割刀片500具有從亦爲大致M字頂點之切割刀片500之中央朝向兩端側配置的多個齒。而且,前述多個齒係以如下方式配置,即,前述齒底線L1、齒谷線L2、小齒線L5、中齒線L3及大齒線L4等成爲如向將切割刀片500設置於包裝容器30時從包裝容器之底板118朝向蓋部120之方向呈凸狀的曲線。In this embodiment, the
根據本實施方式之包裝容器30,可使端部區530之齒更向下方突出,因此在端部切割之初期易於將端部區530之齒刺入包裝物50,可更容易進行端部切割。另一方面,根據本實施方式之包裝容器30,與第1實施方式及第2實施方式同樣地,中央區510較側部區520突出地配置,因此在中央切割之初期易於將中央區510之齒刺入包裝物50,可更容易進行中央切割。According to the
另外,切割刀片500之形狀並不限定於前述大致M字狀,例如亦可僅在側部區520以前述各線成爲曲線之方式配置。
[效果確認試驗]In addition, the shape of the
準備具有中央區與外部區(側部區及端部區)之五個樹脂制切割刀片。關於各個切割刀片,外向齒之有無、關於外向齒之D1/D2或D3/D4、齒谷之形狀(具有彎折點或不具有彎折點地利用圓弧連接)、以及齒谷利用圓弧連接時之圓弧之曲率半徑不同。Prepare five resin cutting blades with central area and outer area (side area and end area). Regarding each cutting blade, the presence or absence of outward teeth, the D1/D2 or D3/D4 of the outward teeth, the shape of the tooth valley (connected by an arc with or without a bending point), and the arc of the tooth valley The radius of curvature of the arc when connecting is different.
關於用於效果確認試驗之五個切割刀片,分別將中央區之形狀示於表1,將側部區之形狀示於表2,將端部區之形狀示於表3。另外,關於D1/D2、D3/D4、曲率半徑Rc、曲率半徑R1及曲率半徑R2,在各區包含該等不同之多個形狀的齒時,關於D1/D2及D3/D4示出各區中之所有值,關於曲率半徑Rc、曲率半徑R1及曲率半徑R2分別示出其下限及上限。Regarding the five cutting blades used in the effect confirmation test, the shape of the central area is shown in Table 1, the shape of the side area is shown in Table 2, and the shape of the end area is shown in Table 3. In addition, with regard to D1/D2, D3/D4, radius of curvature Rc, radius of curvature R1, and radius of curvature R2, when each zone contains teeth of different shapes, each zone is shown for D1/D2 and D3/D4 For all values in the radius of curvature Rc, radius of curvature R1, and radius of curvature R2, the lower limit and upper limit are shown, respectively.
表1
表2
表3
使用將切割刀片-1至切割刀片-5分別接合於圖1及圖2所示之形狀之包裝容器者,進行以下之試驗-1至試驗-3。 (試驗-1:端部切割之容易度)Using the cutting blade-1 to the cutting blade-5 respectively joined to the packaging container of the shape shown in Fig. 1 and Fig. 2, the following test-1 to test-3 were performed. (Test-1: Ease of end cutting)
讓包括隨機選擇之男女之25人試驗者將捲繞且收容於包裝容器之聚偏二氯乙烯製薄膜利用端部切割而切斷。對由各個試驗者進行之40次切斷中產生斜切之次數進行計測,基於以下之基準評價端部切割之容易度。25 testers including randomly selected men and women cut the polyvinylidene chloride film wound and contained in the packaging container by cutting the ends. The number of oblique cuts in 40 cuts performed by each tester was measured, and the ease of end cutting was evaluated based on the following criteria.
◊斜切未產生一次之試驗者在總試驗者中爲70%以上◊Over 70% of the testers who did not produce a single oblique cut
○斜切未產生一次之試驗者在總試驗者中爲50%以上69%以下○For those who did not produce one time of chamfering, 50% or more and 69% or less of the total testers
Δ斜切未產生一次之試驗者在總試驗者中爲30%以上49%以下ΔFor those who did not produce a chamfer, it was 30% or more and 49% or less of the total testers
×斜切未產生一次之試驗者在總試驗者中爲29%以下 (試驗-2:復原率)×The number of testers whose oblique cut did not occur once is 29% or less of the total testers (Test-2: Recovery rate)
將捲繞且收容於包裝容器之聚偏二氯乙烯製薄膜從收容容器抽出30 cm,且在將蓋部確實地關閉之狀態下,以刃型留在包裝薄膜之方式切斷包裝薄膜。之後,將剩餘之包裝薄膜以盡可能不產生褶皺之方式回捲至收容體之內部,且使包裝薄膜之端部密接於捲繞之包裝薄膜。The polyvinylidene chloride film wound and contained in the packaging container is drawn out of the container by 30 cm, and the packaging film is cut with a blade in the packaging film while the lid is securely closed. Afterwards, the remaining packaging film is rolled back into the container in a manner that does not produce wrinkles as much as possible, and the end of the packaging film is closely attached to the wound packaging film.
從該狀態,讓隨機選擇之50人試驗者不使用膠帶等道具,以不產生縱向開裂之方式將包裝薄膜之整個寬度抽出至收容盒之外部。對由50人試驗者進行之復原中在2分鐘以內將整個寬度抽出至收容盒外部之人數進行計測,將其概率設爲復原率。 (試驗-3:中央切割所需之切斷力)From this state, let the 50 randomly selected testers draw out the entire width of the packaging film to the outside of the containment box without using tapes and other tools to prevent longitudinal cracks. The number of people who pulled out the entire width to the outside of the containment box within 2 minutes during the recovery performed by 50 testers was counted, and the probability was set as the recovery rate. (Test-3: Cutting force required for central cutting)
將收容有捲繞之聚偏二氯乙烯製薄膜之包裝容器設置於具備推垃力計之測定器,將薄膜抽出30 cm且固定於測定器之固定夾具。在該狀態下,一面以包裝容器之蓋部(掩蓋片)不離開薄膜之方式固定包裝容器,一面以將切割刀片之整體均勻壓抵於薄膜之方式以每秒90°之旋轉速度使包裝容器以捲繞之薄膜之捲繞軸爲中心旋轉。此時,測定5至10次用於切斷薄膜所需之旋轉力之最大值,將該等之平均設爲中央切割所需之切斷力。The packaging container containing the wound polyvinylidene chloride film is set in a measuring device equipped with a force gauge, the film is drawn out by 30 cm and fixed to the fixing jig of the measuring device. In this state, the packaging container is fixed so that the lid (covering sheet) of the packaging container does not leave the film, and the packaging container is rotated at a rotation speed of 90° per second by pressing the entire cutting blade against the film evenly. Rotate around the winding axis of the film being wound. At this time, the maximum value of the rotational force required for cutting the film is measured 5 to 10 times, and the average of these values is used as the cutting force required for central cutting.
將關於各個切割刀片之試驗-1至試驗-3之結果示於表4。Table 4 shows the results of Test-1 to Test-3 for each cutting blade.
表4
根據表4之結果可知,若僅在外部區(側部區或端部區)具有外向齒,且該外向齒與鄰接於該外向齒而配置的鄰接齒之間利用圓弧連接,則回捲時之復原率更高。According to the results in Table 4, it can be seen that if there are outward teeth only in the outer region (side region or end region), and the outward teeth are connected with the adjacent teeth adjacent to the outward teeth by a circular arc, then it will be rolled back The recovery rate of time is higher.
另外,若D1/D2爲0.20以上0.40以下,則端部切割及中央切割之兩種切割時切斷均容易,在D3/D4爲0.35以上且小於0.50時,端部切割及中央切割之兩種切割時切斷亦容易。 [其他實施方式]In addition, if D1/D2 is 0.20 or more and 0.40 or less, both end cutting and center cutting are easy to cut. When D3/D4 is 0.35 or more and less than 0.50, both end cutting and center cutting It is also easy to cut when cutting. [Other embodiments]
另外,前述實施方式僅表示實施本發明時之具體化之一例,本發明之技術範圍並不因此受到限定性解釋。即,本發明可在不脫離其主旨或其主要特徵之範圍內以各種形態實施。In addition, the foregoing embodiment only shows an example of the implementation of the present invention, and the technical scope of the present invention is not interpreted in a limited manner. That is, the present invention can be implemented in various forms without departing from the gist or main characteristics thereof.
例如,中央區、側部區(側部連接區域及側部主要區域)、以及端部區(端部連接區域及端部主要區域)亦可分別具有前述曲率半徑、D1/D2或D3/D4不同之多個齒。For example, the central area, the side area (side connection area and side main area), and end area (end connection area and end main area) may respectively have the aforementioned radius of curvature, D1/D2 or D3/D4 Different teeth.
例如,前述各實施方式中,關於配置於中央區之所有中央齒設爲曲率半徑Rc包含於前述範圍,但只要關於任一個中央齒使曲率半徑Rc包含於前述範圍即可。但,優選關於至少一半以上之中央齒使曲率半徑Rc包含於前述範圍,更優選關於所有中央齒使曲率半徑Rc包含於前述範圍。For example, in each of the aforementioned embodiments, the radius of curvature Rc of all the central teeth arranged in the central region is included in the aforementioned range, but any one of the central teeth may be included in the aforementioned range. However, it is preferable that the radius of curvature Rc of at least half of the central teeth is contained in the aforementioned range, and it is more preferable that the radius of curvature Rc of all central teeth is contained in the aforementioned range.
另外,前述各實施方式中,關於配置於側部區之所有外向齒設爲曲率半徑R1包含於前述範圍,但只要關於任一個外向齒使曲率半徑R1包含於前述範圍即可。但,優選關於至少一半以上之外向齒使曲率半徑R1包含於前述範圍,更優選關於所有外向齒使曲率半徑R1包含於前述範圍。In addition, in each of the aforementioned embodiments, the radius of curvature R1 of all the outward teeth arranged in the side region is included in the aforementioned range. However, the radius of curvature R1 of any one of the outward teeth may be included in the aforementioned range. However, it is preferable that the radius of curvature R1 be included in the aforementioned range for at least half of the outward teeth, and it is more preferable that the radius of curvature R1 be included in the aforementioned range for all the outward teeth.
另外,前述各實施方式中,關於配置於端部區之所有端部齒設爲曲率半徑R2包含於前述範圍,但只要關於任一個端部齒使曲率半徑R2包含於前述範圍即可。但,優選關於至少一半以上之端部齒使曲率半徑R2包含於前述範圍,更優選關於所有端部齒使曲率半徑R2包含於前述範圍。In addition, in each of the foregoing embodiments, the radius of curvature R2 of all the end teeth arranged in the end region is included in the aforementioned range, but any one of the end teeth may include the radius of curvature R2 in the aforementioned range. However, it is preferable to include the radius of curvature R2 in the aforementioned range for at least half of the end teeth, and it is more preferable to include the radius of curvature R2 in the aforementioned range for all the end teeth.
另外,前述各實施方式中,關於中央齒、側部齒及端部齒各自之全部設爲斜邊之曲率半徑R包含於前述範圍,但只要關於任一個中央齒、側部齒或端部齒使曲率半徑R包含於前述範圍即可。但,優選關於中央齒、側部齒及端部齒各者使至少一半以上的齒之曲率半徑R包含於前述範圍,更優選關於所有齒使曲率半徑R包含於前述範圍。In addition, in each of the foregoing embodiments, the curvature radius R of the hypotenuse for all of the central teeth, the side teeth, and the end teeth is included in the foregoing range. However, as long as any one of the central teeth, side teeth, or end teeth is The radius of curvature R may be included in the aforementioned range. However, it is preferable that the curvature radius R of at least half of the teeth is included in the aforementioned range for each of the central tooth, the side teeth, and the end teeth, and it is more preferable that the curvature radius R of all the teeth is included in the aforementioned range.
另外,前述各實施方式中,關於配置於側部區之所有外向齒設爲D1/D2包含於前述範圍,但只要關於任一個外向齒使D1/D2包含於前述範圍即可。但,優選關於至少一半以上之外向齒使D1/D2包含於前述範圍,更優選關於所有外向齒使D1/D2包含於前述範圍。In addition, in each of the aforementioned embodiments, it is assumed that D1/D2 is included in the aforementioned range with respect to all the outward teeth arranged in the side region, but it is only necessary that D1/D2 is included in the aforementioned range with respect to any one of the outward teeth. However, it is preferable that D1/D2 be contained in the aforementioned range for at least half of the outward teeth, and it is more preferable that D1/D2 be contained in the aforementioned range for all the outward teeth.
另外,前述第2實施方式中,關於配置於端部區之所有外向齒設爲D3/D4包含於前述範圍,但只要關於任一個外向齒使D3/D4包含於前述範圍即可。但,優選關於至少一半以上之外向齒使D3/D4包含於前述範圍,更優選關於所有外向齒使D3/D4包含於前述範圍。In addition, in the aforementioned second embodiment, it is assumed that D3/D4 is included in the aforementioned range with respect to all the outward teeth arranged in the end region, but D3/D4 should be included in the aforementioned range with respect to any one of the outward teeth. However, it is preferable that D3/D4 is contained in the aforementioned range for at least half of the outward teeth, and it is more preferable that D3/D4 is contained in the aforementioned range for all the outward teeth.
另外,前述各實施方式中,在中央區配置有中央小齒,但亦可爲不配置中央小齒之構成。In addition, in each of the above-mentioned embodiments, the central small teeth are arranged in the central area, but it may be a configuration in which the central small teeth are not arranged.
另外,前述任一實施方式中,切割刀片均可爲聚酯、聚乙烯、聚丙烯、聚苯乙烯、聚縮醛、聚苯硫醚、聚醚醚酮(PEEK)、聚醚碸(PES)、及聚乳酸(PLA)等樹脂製,亦可爲金屬製。但,如效果確認試驗-2所示,在切割刀片爲樹脂製時,包裝物之縱向開裂更易產生。因此,抑制包裝物之縱向開裂之效果在切割刀片爲樹脂製時顯著。In addition, in any of the foregoing embodiments, the cutting blade can be polyester, polyethylene, polypropylene, polystyrene, polyacetal, polyphenylene sulfide, polyether ether ketone (PEEK), or polyether sulfide (PES). , And polylactic acid (PLA) and other resins, can also be metal. However, as shown in the effect confirmation test-2, when the cutting blade is made of resin, longitudinal cracks in the package are more likely to occur. Therefore, the effect of suppressing the longitudinal cracking of the package is significant when the cutting blade is made of resin.
另外,在前板中蓋部將開口部關閉時與掩蓋片相對向之區域具有止動部,其用於使包裝物之切斷部附近附著而抑制回捲。止動部可設爲例如在前板形成將前板之一部分撬起成之翼片,而形成於翼片之表面的構成。In addition, in the front panel, the area facing the cover sheet when the lid portion closes the opening portion has a stopper portion for attaching the package to the vicinity of the cut portion and suppressing rewinding. For example, the stopper may be formed with a fin formed on the front panel by prying up a part of the front panel and formed on the surface of the fin.
另外,主體部、蓋部及壓固板之表面亦可塗佈紫外線硬化型清漆及使其硬化等而進行表面處理,以提高耐水性及耐光性等。In addition, the surface of the main body, the cover, and the pressure plate can also be coated with UV-curable varnish and hardened for surface treatment to improve water resistance and light resistance.
另外,包裝物只要是片狀或薄膜狀之長條物捲繞而成即可,其材料可爲樹脂(包含聚偏二氯乙烯、氯乙烯、聚乙烯、聚甲基戊烯等之單層或多層之薄膜或片等)、紙(捲筒紙、廚房紙、料理用加熱片及烹調片等)及金屬箔(鋁箔等)等。In addition, as long as the packaging is rolled into a long sheet or film, the material can be resin (single layer including polyvinylidene chloride, vinyl chloride, polyethylene, polymethylpentene, etc.) Or multilayer films or sheets, etc.), paper (roll paper, kitchen paper, heating sheet for cooking and cooking sheet, etc.) and metal foil (aluminum foil, etc.).
本申請係主張基於2019年3月19日申請之日本申請編號2019-051447號之優先權的申請,該申請之申請專利範圍、說明書及圖式中所記載之內容被引用於本申請。 產業上之可利用性This application is an application claiming priority based on the Japanese application number 2019-051447 filed on March 19, 2019, and the content described in the patent scope, specification, and drawings of the application is cited in this application. Industrial availability
本發明之切割刀片在藉由捲繞之包裝物之逆向旋轉等而切斷的包裝物向主體部之內部回捲,導致包裝物之端部貼附於捲繞之包裝物之表面,且要使前述貼附之端部再次復原於主體部與蓋部之間時,可抑制在包裝物產生縱向開裂。因此,本發明可更舒適地使用包裝容器,而促進包裝用薄膜等用於家庭及業務,期待其有助於本領域之發展。The cutting blade of the present invention rewinds the package cut by the reverse rotation of the wrapped package to the inside of the main body, causing the end of the package to stick to the surface of the wrapped package, and When the aforementioned attached end is restored between the main body and the lid, longitudinal cracks in the package can be suppressed. Therefore, the present invention can use packaging containers more comfortably, and promote the use of packaging films and the like in homes and businesses, and is expected to contribute to the development of this field.
10、20、30:包裝容器
50:包裝物
100:收容盒
110:主體部
112a、112b:端板
114:前板
116:背板
118:底板
119:開口面
120:蓋部
122:蓋板
124:遮蓋片
125、125a、125b:掩蓋片之前端
126a、126b:側蓋片
128:連接部
200、300、400、500:切割刀片
210、310、410、510:中央區
212、212a、212b、212c、312:中央大齒
214、214a、214b、214c、214d、314:中央中齒
216、316:中央小齒
220、320、420、520:側部區
222、322、322a、322b:側部齒
230、330、430、530:端部區
232、232a、232b、332、332a、332b:端大齒
234、234a、234b、334:端中齒
320a:側部連接區域
320b:側部主要區域
330a:端部連接區域
330b:端部主要區域
322c:側部連接齒
336、336a、336b:連接中齒
338、338a、338b:連接大齒
10, 20, 30: packaging container
50: Packaging
100: containment box
110:
[圖1]係示意性表示本發明之一實施方式之包裝容器之構成的關閉蓋部時之立體圖。 [圖2]係示意性表示本發明之一實施方式之包裝容器之構成的打開蓋部時之立體圖。 [圖3]係表示本發明之一實施方式之切割刀片之示意性構成的前視圖。 [圖4]係表示構成本發明之一實施方式之切割刀片之中央區的齒之圖3中區域X之局部放大圖。 [圖5]係表示構成本發明之一實施方式之切割刀片之側部區的齒之圖3中區域Y之局部放大圖。 [圖6]係表示構成本發明之一實施方式之切割刀片之端部區的齒之圖3中區域Z之局部放大圖。 [圖7]係表示本發明之另一實施方式之切割刀片之示意性構成的前視圖。 [圖8]係表示構成本發明之另一實施方式之切割刀片之中央區與側部區(側部連接區域)之交界附近的齒之圖7中區域S之局部放大圖。 [圖9]係表示構成本發明之另一實施方式之切割刀片之側部連接區域與側部主要區域之交界附近的齒之圖7中區域T之局部放大圖。 [圖10]係表示構成本發明之另一實施方式之切割刀片之端部連接區域及端部主要區域的齒之圖7中區域U之局部放大圖。 [圖11]係示意性表示本發明之另一實施方式之包裝容器之構成的關閉蓋部時之立體圖。 [圖12]係示意性表示本發明之又一實施方式之包裝容器之構成的關閉蓋部時之立體圖。[Fig. 1] is a perspective view schematically showing the configuration of the packaging container of one embodiment of the present invention when the lid is closed. [Fig. 2] is a perspective view schematically showing the structure of the packaging container of one embodiment of the present invention when the lid is opened. [Figure 3] is a front view showing the schematic configuration of a cutting blade according to an embodiment of the present invention. [Fig. 4] is a partial enlarged view of the area X in Fig. 3 showing the teeth constituting the central area of the cutting blade according to one embodiment of the present invention. [Fig. 5] is a partial enlarged view of the area Y in Fig. 3 showing the teeth constituting the side area of the cutting blade according to an embodiment of the present invention. [Fig. 6] is a partial enlarged view of area Z in Fig. 3 showing the teeth constituting the end area of the cutting blade according to one embodiment of the present invention. [Figure 7] is a front view showing the schematic configuration of a cutting blade according to another embodiment of the present invention. [Fig. 8] is a partial enlarged view of area S in Fig. 7 showing teeth near the boundary between the central area and the side area (side connection area) of the cutting blade according to another embodiment of the present invention. [Fig. 9] is a partial enlarged view of the area T in Fig. 7 showing the teeth near the boundary between the side connection area and the side main area of the cutting blade according to another embodiment of the present invention. [Fig. 10] is a partial enlarged view of area U in Fig. 7 showing the teeth constituting the end connecting area and the end main area of the cutting blade according to another embodiment of the present invention. [Fig. 11] is a perspective view schematically showing the configuration of a packaging container according to another embodiment of the present invention when the lid portion is closed. [Fig. 12] is a perspective view schematically showing the structure of a packaging container according to another embodiment of the present invention when the lid is closed.
220:側部區 220: side area
222:側部齒 222: Side teeth
D1,D2:距離 D1, D2: distance
L1:齒底線 L1: Tooth bottom line
L2:齒谷線 L2: tooth valley line
L3:中齒線 L3: Middle tooth line
R1:曲率半徑 R1: radius of curvature
S1,S2,S3:交叉點 S1, S2, S3: intersection
T1,T2,T3:齒 T1, T2, T3: teeth
Claims (10)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2019-051447 | 2019-03-19 | ||
JP2019051447 | 2019-03-19 |
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TW202035085A true TW202035085A (en) | 2020-10-01 |
TWI710442B TWI710442B (en) | 2020-11-21 |
Family
ID=72520821
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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TW109100440A TWI710442B (en) | 2019-03-19 | 2020-01-07 | Cutting blade and packaging container |
Country Status (4)
Country | Link |
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JP (1) | JP6932286B2 (en) |
CN (1) | CN113396111B (en) |
TW (1) | TWI710442B (en) |
WO (1) | WO2020188899A1 (en) |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH068229U (en) * | 1991-02-18 | 1994-02-01 | 本州製紙株式会社 | Vulcanized fiber toothed carton |
US6173876B1 (en) * | 1991-09-12 | 2001-01-16 | Oji Paper Co., Ltd. | Vulcanized fiber sheet having a serrated cutting edge, a carton having said sheet adhered thereto, and a method of adhesion thereof |
JP2001206363A (en) * | 2000-01-31 | 2001-07-31 | Kyodo Printing Co Ltd | Roll storage carton |
AU2003903508A0 (en) * | 2003-07-07 | 2003-07-24 | Clorox Australia Pty Limited | Film cutter bar |
JP5090778B2 (en) * | 2006-05-31 | 2012-12-05 | 株式会社クレハ | Cutting blade for packaging container and packaging container having the same |
JP5069075B2 (en) * | 2007-10-01 | 2012-11-07 | 株式会社クレハ | Cutting blade for packaging container and packaging container having the same |
JP5038111B2 (en) * | 2007-11-29 | 2012-10-03 | 株式会社クレハ | Cutting blade for packaging container and packaging container |
JP5342853B2 (en) * | 2008-11-17 | 2013-11-13 | 株式会社クレハ | Cutting blade for packaging container, packaging container and package supply device |
CN103732505B (en) * | 2011-09-14 | 2015-04-29 | 旭化成化学株式会社 | Lid cover for rolled cylinder storage box and rolled cylinder storage device |
JP6076797B2 (en) * | 2013-03-28 | 2017-02-08 | 山下印刷紙器株式会社 | Cutting blade for food wrap film |
WO2014181752A1 (en) * | 2013-05-09 | 2014-11-13 | 旭化成ケミカルズ株式会社 | Wrap film storage box |
JP2016120538A (en) * | 2014-12-24 | 2016-07-07 | 株式会社クレハ | Cutting blade for packaging film storage container, and storage container having the same |
CN108163611A (en) * | 2017-12-23 | 2018-06-15 | 何义勇 | Casing with means for cutting the preservation film |
-
2019
- 2019-12-02 WO PCT/JP2019/047022 patent/WO2020188899A1/en active Application Filing
- 2019-12-02 JP JP2021506151A patent/JP6932286B2/en active Active
- 2019-12-02 CN CN201980089957.9A patent/CN113396111B/en active Active
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2020
- 2020-01-07 TW TW109100440A patent/TWI710442B/en active
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JPWO2020188899A1 (en) | 2021-09-27 |
CN113396111B (en) | 2022-04-12 |
WO2020188899A1 (en) | 2020-09-24 |
TWI710442B (en) | 2020-11-21 |
JP6932286B2 (en) | 2021-09-08 |
CN113396111A (en) | 2021-09-14 |
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