TW202136124A - Paper container - Google Patents

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Publication number
TW202136124A
TW202136124A TW109142763A TW109142763A TW202136124A TW 202136124 A TW202136124 A TW 202136124A TW 109142763 A TW109142763 A TW 109142763A TW 109142763 A TW109142763 A TW 109142763A TW 202136124 A TW202136124 A TW 202136124A
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Taiwan
Prior art keywords
paper container
hole
synthetic resin
sealing sheet
resin layer
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TW109142763A
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Chinese (zh)
Inventor
長見友幸
田中淳
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日商日本製紙股份有限公司
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Publication of TW202136124A publication Critical patent/TW202136124A/en

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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
    • B65D5/40—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 specially constructed to contain liquids
    • 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
    • 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
    • B65D5/74—Spouts

Abstract

To obtain a paper container in which a sealing sheet that seals a through-hole as a liquid take-out port and is formed with a synthetic resin is easily cut off and the liquid take-out port can be opened. A paper container is formed by a paper base obtained by laminating synthetic resin layers on front and back surfaces and is provided with a through-hole 6 as a liquid take-out port 5 on a top surface 4, in which the through-hole 6 is openably sealed with a sealing sheet 7 formed of synthetic resin. The paper container is provided with a fragile part 9 modified by a laser irradiation treatment onto a surface exposed to the through-hole 6 in the sealing sheet 7.

Description

紙容器Paper container

本發明，是關於紙容器，該紙容器是藉由將合成樹脂層積層於表背面的紙基材所形成，並於頂面設有成為液體取出口的透孔，且該透孔是利用由合成樹脂所形成的封閉薄片而能夠開封地被封閉著。The present invention relates to a paper container. The paper container is formed by laminating synthetic resin on a paper base material on the front and back, and is provided with a through hole that becomes a liquid outlet on the top surface, and the through hole is made of The sealing sheet formed of synthetic resin is sealed so that it can be opened.

於頂面設有成為液體取出口的透孔，且該透孔是利用由合成樹脂所形成的封閉薄片而能夠開封地被封閉之紙容器，是作為用以容納牛奶或果汁等之液體食品的紙容器而被廣泛地使用。The top surface is provided with a through hole that serves as a liquid outlet, and the through hole is a paper container that can be opened and closed using a sealing sheet formed of synthetic resin. It is used to contain liquid foods such as milk or juice. Paper containers are widely used.

作為如此地由利用封閉薄片所封閉的透孔而構成之液體取出口的開封手段，周知有：於頂面安裝有注出口封蓋，該注出口封蓋是位在以封閉薄片所封閉的透孔上，且由內藏旋轉式開封刃的流出嘴及封蓋所構成，藉由使旋轉式開封刃旋轉來切斷封閉薄片而得以將液體取出口予以開封之方式者(例如，請參照專利文獻1)、或是將吸管戳刺於封閉薄片而將液體取出口予以開封之方式者(例如，請參照專利文獻2)。 [先前技術文獻] [專利文獻]As a means for unsealing the liquid outlet port formed by the through hole closed by the sealing sheet, it is known that a spout outlet cover is installed on the top surface, and the spout outlet cover is located on the transparent sheet closed by the sealing sheet. The hole is composed of an outflow nozzle and a cover with a built-in rotary opening blade, and the liquid outlet opening can be opened by rotating the rotary opening blade to cut the sealing sheet (for example, please refer to the patent Document 1), or a method in which a straw is pierced into a sealing sheet to open the liquid outlet (for example, please refer to Patent Document 2). [Prior Technical Literature] [Patent Literature]

[專利文獻1] 日本特開2002-53164號公報 [專利文獻2] 日本特開2008-296925號公報[Patent Document 1] JP 2002-53164 A [Patent Document 2] JP 2008-296925 A

[發明所欲解決的問題][The problem to be solved by the invention]

然而，成為液體取出口之透孔由於是利用由合成樹脂所形成的封閉薄片而被封閉著，因此在以使內藏於注出口封蓋的旋轉式開封刃旋轉作為開封手段來切斷封閉薄片之情形時，會有由於合成樹脂原本所具有的延伸性而造成封閉薄片無法容易地切斷而纏住刀刃，導致不能完美地對液體取出口進行開口之情事；又，將吸管戳刺於封閉薄片來開封液體取出口之情形時，會有由於封閉薄片拉伸而無法順利地以吸管戳刺之情事等問題。However, the through hole that becomes the liquid outlet is closed by a sealing sheet made of synthetic resin. Therefore, the rotary opening blade embedded in the nozzle cover is rotated as the opening means to cut the closed sheet. In this case, due to the inherent extensibility of the synthetic resin, the sealing sheet cannot be easily cut and entangled with the blade, resulting in the inability to open the liquid outlet perfectly; also, the straw is pierced into the seal. When a sheet is used to open the liquid outlet, there may be problems such as the failure to smoothly poke with the straw due to the stretching of the closed sheet.

本發明的目的，在於提供一種紙容器，其係易於將由合成樹脂所形成且封閉住成為液體取出口之透孔的封閉薄片予以切斷，而得以將液體取出口開封。 [解決問題的技術手段]The object of the present invention is to provide a paper container which can easily cut the sealing sheet formed of synthetic resin and which closes the through hole which becomes the liquid outlet, so that the liquid outlet can be unsealed. [Technical means to solve the problem]

為了達成上述的目的，於請求項1所述的發明，為一種紙容器，是藉由將合成樹脂層積層於表背面的紙基材所形成，並於頂面設有成為液體取出口的透孔，且上述透孔是利用由合成樹脂所形成的封閉薄片而能夠開封地被封閉著，其特徵在於：上述封閉薄片，係在露出於上述透孔的面上，設有藉由雷射照射處理進行改質處理後的脆弱部。In order to achieve the above-mentioned object, the invention described in claim 1 is a paper container formed by laminating a synthetic resin on a paper base material on the front and back sides, and is provided on the top surface with a transparent opening that becomes a liquid outlet. The through hole is opened and closed by a sealing sheet formed of synthetic resin, and is characterized in that: the sealing sheet is attached to the surface exposed to the through hole and is provided with laser irradiation Treat the fragile part after the modification treatment.

請求項2所述的發明，是如請求項1所述的紙容器，其中，由上述合成樹脂所形成的封閉薄片，是由積層於上述紙基材之表背面的合成樹脂層在上述透孔內積層成一體者所構成為其特徵。The invention according to claim 2 is the paper container according to claim 1, wherein the sealing sheet formed of the synthetic resin is formed by a synthetic resin layer laminated on the front and back of the paper substrate in the through hole It is characterized by the composition of the inner build-up layer as a whole.

請求項3所述的發明，是如請求項2所述的紙容器，其特徵為：在上述紙基材與積層於上述紙基材之背面的合成樹脂層之間，積層有阻氣性樹脂層。The invention according to claim 3 is the paper container according to claim 2, wherein a gas barrier resin is laminated between the paper base material and a synthetic resin layer laminated on the back of the paper base material Floor.

請求項4所述的發明，是如請求項1所述的紙容器，其中，由上述合成樹脂所形成的封閉薄片，是由熔著薄片由所構成，且熔著在上述透孔之周圍的背面側的合成樹脂層為其特徵。The invention according to claim 4 is the paper container according to claim 1, wherein the sealing sheet formed of the synthetic resin is composed of a fused sheet and is fused around the through hole The synthetic resin layer on the back side is characteristic.

請求項5所述的發明，是如請求項4所述的紙容器，其中，上述熔著薄片，是以阻氣性樹脂層作為芯層並於該阻氣性樹脂層的兩面側積層有合成樹脂層的積層體為其特徵。The invention according to claim 5 is the paper container according to claim 4, wherein the fusion sheet has a gas barrier resin layer as a core layer and a composite layer is laminated on both sides of the gas barrier resin layer. A laminate of resin layers is its characteristic.

請求項6所述的發明，是如請求項1至5之任一項所述的紙容器，其中，藉由上述雷射照射處理進行改質處理後的脆弱部，是沿著上述透孔的內周設成環狀為其特徵。The invention according to claim 6 is the paper container according to any one of claims 1 to 5, wherein the fragile portion after being modified by the laser irradiation treatment is along the through hole The inner circumference is set in a ring shape as its characteristic.

請求項7所述的發明，是如請求項1至5之任一項所述的紙容器，其中，藉由上述雷射照射處理進行改質處理後的脆弱部，是設於上述透孔的中央為其特徵。The invention according to claim 7 is the paper container according to any one of claims 1 to 5, wherein the fragile portion after being modified by the laser irradiation treatment is provided in the through hole The center is its characteristic.

請求項8所述的發明，是如請求項1至7之任一項所述的紙容器，其中，上述雷射照射處理為二氧化碳雷射。The invention according to claim 8 is the paper container according to any one of claims 1 to 7, wherein the laser irradiation treatment is a carbon dioxide laser.

請求項9所述的發明，是如請求項8所述的紙容器，其中，上述雷射照射處理，其輸出為10W～30W，掃描速度為400mm/秒～700mm/秒。 [發明的效果]The invention according to claim 9 is the paper container according to claim 8, wherein the laser irradiation process has an output of 10 W to 30 W and a scanning speed of 400 mm/sec to 700 mm/sec. [Effects of the invention]

如以上所述，根據本發明的紙容器，是藉由將合成樹脂層積層於表背面的紙基材所形成，並於頂面設有成為液體取出口的透孔，且該透孔是利用由合成樹脂所形成的封閉薄片而能夠開封地被封閉著，由於封閉薄片，是在露出於透孔的面上，設有藉由雷射照射處理進行改質處理後的脆弱部，所以對於在使內藏於注出口封蓋的旋轉式開封刃旋轉來切斷封閉薄片而開封液體取出口時，封閉薄片不會纏住旋轉式開封刃而可以容易地將封閉薄片切斷，因而能夠完美地將液體取出口予以開封。又，對於在將吸管戳刺於封閉薄片來開封液體取出口時，封閉薄片不會拉伸而可以順利地以吸管戳刺。As described above, the paper container according to the present invention is formed by laminating synthetic resin on a paper base material on the front and back, and is provided with a through hole that serves as a liquid outlet on the top surface, and the through hole is used The sealing sheet formed of synthetic resin can be sealed so that it can be unsealed. Since the sealing sheet is provided with a fragile portion on the surface exposed to the through hole, the fragile part is modified by the laser irradiation treatment. When the rotary opening blade built into the cap of the injection port is rotated to cut the closed sheet and the liquid outlet is opened, the closing sheet can be easily cut without being entangled with the rotary opening blade, so it can be perfectly cut. Open the liquid outlet. In addition, when a straw is pierced on the sealing sheet to open the liquid outlet, the sealing sheet does not stretch and can be smoothly pierced with the straw.

上述之由合成樹脂所形成的封閉薄片，是以積層有阻氣性樹脂層為佳。藉由積層有阻氣性樹脂層，可以防止氣體從外部往紙容器內透過，又，由於阻氣性樹脂層並不會妨礙藉由雷射照射處理所進行之封閉薄片的改質，所以即使是已積層有阻氣性樹脂層的封閉薄片，也可以設置由雷射照射處理所形成的脆弱部。The above-mentioned sealing sheet formed of synthetic resin is preferably laminated with a gas barrier resin layer. The gas barrier resin layer is laminated to prevent gas from penetrating into the paper container from the outside. In addition, since the gas barrier resin layer does not hinder the modification of the sealing sheet by the laser irradiation treatment, even It is a sealing sheet on which a gas barrier resin layer has been laminated, and a fragile part formed by laser irradiation treatment can also be provided.

又，若藉由雷射照射處理進行改質處理後的脆弱部是沿著上述透孔的內周設成環狀時，則對於以內藏於注出口封蓋的旋轉式開封刃來切斷封閉薄片而開封液體取出口的情形，可以確實地切斷封閉薄片，並且，由於在環狀之內側的面沒有設置脆弱部，所以可以謀得縮短該部分的雷射照射處理時間。In addition, if the fragile portion after reforming by the laser irradiation treatment is formed in a ring shape along the inner circumference of the through hole, a rotary unsealing blade built in the cap of the spout is used to cut the sealing sheet. When opening the liquid outlet, the sealing sheet can be cut reliably, and since there is no fragile portion on the inner surface of the ring, the laser irradiation processing time for this portion can be shortened.

又，若藉由雷射照射處理進行改質處理後的脆弱部是設在上述透孔的中央時，則對於將吸管戳刺於封閉薄片來開封液體取出口的情形，可以確實地將吸管戳刺於封閉薄片，並且，由於將脆弱部設置於透孔的中央，在中央之外側的面上並沒有設置脆弱部，所以可以謀得縮短該部分的雷射照射處理時間。In addition, if the fragile part after reforming by the laser irradiation treatment is provided in the center of the above-mentioned through hole, the straw can be reliably pierced in the case of piercing the straw on the sealing sheet to open the liquid outlet port. The sealing sheet is pierced and the fragile portion is provided in the center of the through hole, and the fragile portion is not provided on the surface outside the center, so that the laser irradiation processing time for this portion can be shortened.

又，對於雷射照射處理，是以二氧化碳雷射為佳。若是二氧化碳雷射的話，由於焦點寬度較為寬廣，且亦可取得焦點深度，所以在將由雷射照射處理進行改質處理後的脆弱部沿著透孔的內周設成環狀之情形時，可以容易地進行較寬廣之環狀的照射，藉此，對於注出口封蓋的位置偏離，可以加寬其許容範圍；又，在將由雷射照射處理進行改質處理後的脆弱部設於透孔的中央之情形時，可以容易地對中央進行較大直徑的照射，藉此，對於吸管的戳刺位置偏離，可以加寬其許容範圍。In addition, for the laser irradiation treatment, a carbon dioxide laser is preferable. In the case of a carbon dioxide laser, the focal width is wider and the focal depth can also be obtained. Therefore, when the fragile part modified by the laser irradiation treatment is formed in a ring shape along the inner circumference of the through hole, it can be easily By performing a wider ring-shaped irradiation, the tolerance range for the positional deviation of the spout cover can be widened; and the fragile part after being reformed by the laser irradiation treatment is placed in the center of the through hole In this case, the center can be easily irradiated with a larger diameter, thereby, the tolerance range of the straw can be widened for the deviation of the sticking position of the straw.

雷射照射處理，其輸出以10W～30W，掃描速度以400mm/秒～700mm/秒為佳。若輸出為30W，掃描速度為400mm/秒～700mm/秒的話，則可以藉由內藏於注出口封蓋的旋轉式開封刃容易地將設置在封閉薄片的脆弱部切斷，並且可以容易地將吸管戳刺於脆弱部。 若掃描速度超過700mm/秒的話，則在以內藏於注出口封蓋的旋轉式開封刃切斷封閉薄片之情形時，會有封閉薄片拉伸而造成纏住旋轉式開封刃的情況；又，在將吸管戳刺於封閉薄片之情形時，會有封閉薄片拉伸而不能順利地將吸管戳刺的情況。 又，若掃描速度未滿400mm/秒的話，則設於封閉薄片之脆弱部的脆弱性會變大，會有受到來自外部的碰撞而容易造成破裂的情形。For laser irradiation processing, the output is 10W～30W, and the scanning speed is 400mm/sec～700mm/sec. If the output is 30W and the scanning speed is 400mm/sec to 700mm/sec, the fragile part provided on the sealing sheet can be easily cut by the rotary unsealing blade built in the cover of the spout, and it can be easily cut off. Poke the straw into the fragile part. If the scanning speed exceeds 700mm/sec, when the closed sheet is cut by the rotary unsealing blade built into the cover of the spout, the closed sheet may stretch and cause the rotary unsealing blade to be entangled; When the straw is pierced into the closing sheet, the closing sheet may stretch and the straw cannot be pierced smoothly. In addition, if the scanning speed is less than 400 mm/sec, the fragility of the fragile part provided in the sealing sheet will increase, and it may be easily broken by the impact from the outside.

以下，參照圖面詳細地說明用以實施本發明的紙容器之形態的一例。 第1圖～第4圖是顯示本發明的紙容器之實施形態的第1例，第1圖是第1例之紙容器的部分放大斷面圖；第2圖是顯示設於封閉薄片之脆弱部的一例的說明圖；第3圖是顯示設於封閉薄片之脆弱部的其他例的說明圖；第4圖是顯示設於封閉薄片之脆弱部的其他例的說明圖。Hereinafter, an example of the form of the paper container for implementing the present invention will be described in detail with reference to the drawings. Figures 1 to 4 show the first example of the embodiment of the paper container of the present invention. Figure 1 is a partially enlarged cross-sectional view of the paper container of the first example; Figure 2 shows the fragility provided in the sealing sheet Fig. 3 is an explanatory diagram showing another example of the fragile portion provided on the sealing sheet; Fig. 4 is an explanatory diagram showing another example of the fragile portion provided on the sealing sheet.

第1例的紙容器，是藉由將合成樹脂層2、3積層於表背面的紙基材1所形成，並於頂面4設有成為液體取出口5的透孔6，且透孔6是利用由合成樹脂所形成的封閉薄片7而能夠開封地被封閉著。The paper container of the first example is formed by laminating synthetic resin layers 2 and 3 on the paper base material 1 on the front and back, and the top surface 4 is provided with a through hole 6 that becomes a liquid outlet 5, and the through hole 6 The sealing sheet 7 made of synthetic resin is used to be sealed so that it can be opened.

紙基材1，是與一般通例之此類紙基材相同者，雖無特別地限定，但以具有150 g/m2 ～400g/m2 之基重者為佳。 又，作為最外面之合成樹脂層2的樹脂者，是以低密度聚乙烯(LDPE)、中密度聚乙烯(MDPE)、高密度聚乙烯(HDPE)、線形低密度聚乙烯(LLDPE)、聚酯、共聚酯為佳。 又，作為最內面之合成樹脂層3的樹脂者，是以低密度聚乙烯、中密度聚乙烯、高密度聚乙烯、線形低密度聚乙烯、聚酯、共聚酯、使用茂金屬系觸媒所合成的低密度聚乙烯為佳。 對於合成樹脂層2、3的厚度，在第1例中，表面側的合成樹脂層2為30μm，背面側的合成樹脂層3為55μm，不過並不受此所限定。The paper base material 1 is the same as the paper base material of the general example. Although it is not particularly limited, it is preferably one having a basis weight of 150 g/m 2 to 400 g/m 2. In addition, as the resin of the outermost synthetic resin layer 2, low-density polyethylene (LDPE), medium-density polyethylene (MDPE), high-density polyethylene (HDPE), linear low-density polyethylene (LLDPE), poly Ester and copolyester are preferred. In addition, as the resin of the innermost synthetic resin layer 3, low-density polyethylene, medium-density polyethylene, high-density polyethylene, linear low-density polyethylene, polyester, copolyester, metallocene-based contact Low-density polyethylene synthesized by the medium is better. Regarding the thickness of the synthetic resin layers 2 and 3, in the first example, the synthetic resin layer 2 on the front side is 30 μm, and the synthetic resin layer 3 on the back side is 55 μm, but it is not limited thereto.

又，在第1例中，在紙基材1與積層於紙基材1之背面的合成樹脂層3之間，積層有阻氣性樹脂層8。 作為形成阻氣性樹脂層8之阻氣性樹脂者，係有：聚對苯二甲酸乙二酯(PET)、非結晶共聚酯、乙烯/乙烯醇共聚物(EVOH)等。在第1例中是使用聚對苯二甲酸乙二酯。 對於阻氣性樹脂層8的厚度，在第1例中為12μm，不過並不受此所限定。In addition, in the first example, a gas barrier resin layer 8 is laminated between the paper base material 1 and the synthetic resin layer 3 laminated on the back surface of the paper base material 1. Examples of the gas barrier resin forming the gas barrier resin layer 8 include polyethylene terephthalate (PET), amorphous copolyester, ethylene/vinyl alcohol copolymer (EVOH), and the like. In the first example, polyethylene terephthalate was used. The thickness of the gas barrier resin layer 8 is 12 μm in the first example, but it is not limited thereto.

對於由合成樹脂由所形成的封閉薄片7，在第1例中，積層於紙基材1之表背面的合成樹脂層2、3以及阻氣性樹脂層8是成為熔著在透孔6內而積層成一體者(請參照第1圖)。Regarding the sealing sheet 7 made of synthetic resin, in the first example, the synthetic resin layers 2, 3 and the gas barrier resin layer 8 laminated on the front and back of the paper substrate 1 are melted in the through hole 6 And the layers are integrated (please refer to Figure 1).

在如此所構成的封閉薄片7中，在露出於透孔6的面上，設有藉由雷射照射處理進行改質處理後的脆弱部11。設在露出於透孔6之封閉薄片7的面上的脆弱部11，可以是如第2圖以點狀所示之方式，在露出於透孔6的前表面設置藉由雷射照射處理進行改質處理後的脆弱部11；又，亦可以與開封手段相對應，例如，在使內藏於注出口封蓋的旋轉式開封刃旋轉來切斷封閉薄片7而開封液體取出口5之形式的紙容器的情形時，該脆弱部11係如第3圖以點狀所示之方式，沿著透孔6的內周設成環狀；又，在將吸管戳刺於封閉薄片7來開封液體取出口5之形式的紙容器的情形時，該脆弱部11係如第4圖以點狀所示，以設於透孔6的中央之方式來實施亦可。In the sealing sheet 7 constituted in this way, on the surface exposed to the through hole 6 is provided a fragile portion 11 that has been reformed by a laser irradiation process. The fragile portion 11 provided on the surface of the sealing sheet 7 exposed in the through hole 6 may be as shown in dotted form in FIG. The fragile portion 11 after the modification treatment; and it can also correspond to the opening means, for example, in the form of rotating a rotary opening blade embedded in the nozzle cover to cut the sealing sheet 7 and open the liquid outlet 5 In the case of a paper container, the fragile portion 11 is formed in a ring shape along the inner circumference of the through hole 6 as shown in a dot pattern in Figure 3; in addition, the straw is pierced into the sealing sheet 7 to unseal the liquid. In the case of a paper container in the form of an outlet 5, the fragile portion 11 is shown in a dotted shape as shown in FIG.

對於對封閉薄片7進行改質處理的雷射照射處理，雖可使用二氧化碳雷射、UV雷射等，不過以二氧化碳雷射為佳。 在第1例中，是藉由二氧化碳雷射進行雷射照射處理。雷射光照射過的封閉薄片7係藉由熱而收縮變脆弱，致使雷射光所照射過的部分被改質處理而成為脆弱部11。Regarding the laser irradiation process for modifying the sealing sheet 7, although carbon dioxide lasers, UV lasers, etc. can be used, carbon dioxide lasers are preferred. In the first example, a carbon dioxide laser is used for laser irradiation. The sealing sheet 7 irradiated by the laser light shrinks and becomes fragile by heat, so that the part irradiated by the laser light is modified to become the fragile portion 11.

由二氧化碳雷射所進行的雷射照射處理，是以輸出為10W～30W，掃描速度為400mm/秒～700mm/秒對封閉薄片7的面進行雷射光照射為佳。 設在以輸出為10W～30W，掃描速度為400mm/秒～700mm/秒所進行之雷射照射處理後之封閉薄片7的脆弱部11，可以容易地由內藏於注出口封蓋的旋轉式開封刃所切斷，並且，可以容易將吸管戳刺於脆弱部11。 若掃描速度超過700mm/秒的話，則在以內藏於注出口封蓋的旋轉式開封刃切斷封閉薄片7之情形時，會有封閉薄片7拉伸而造成纏住旋轉式開封刃的情況；又，在吸管戳刺於封閉薄片7之情形時，會有封閉薄片7拉伸而不能順利地將吸管戳刺的情況。 又，若掃描速度未滿400mm/秒的話，則設於封閉薄片7之脆弱部11的脆弱性會變大，會有受到來自外部的碰撞而容易造成破裂的情形。The laser irradiation process performed by the carbon dioxide laser preferably irradiates the surface of the sealing sheet 7 with laser light with an output of 10 W to 30 W and a scanning speed of 400 mm/sec to 700 mm/sec. Set in the fragile part 11 of the sealing sheet 7 after laser irradiation with an output of 10W～30W and a scanning speed of 400mm/sec～700mm/sec, which can be easily covered by a rotary type that is embedded in the spout It is cut by the opening blade, and the straw can be easily pierced into the fragile part 11. If the scanning speed exceeds 700mm/sec, when the closed sheet 7 is cut by the rotary opening blade embedded in the cover of the spout, the closing sheet 7 may stretch and cause the rotary opening blade to be entangled; In addition, when the straw is pierced with the closing sheet 7, the closing sheet 7 may be stretched and the straw may not be pierced smoothly. Moreover, if the scanning speed is less than 400 mm/sec, the fragility of the fragile portion 11 provided in the sealing sheet 7 will increase, and it may be easily broken by the impact from the outside.

根據如上述方式所構成之第1例的紙容器，其用以將設在紙容器的頂面4之成為液體取出口5的透孔6予以封閉的封閉薄片7，係由於在露出於透孔7的面上設有藉由雷射照射處理進行改質處理後的脆弱部11，所以在使內藏於設在頂面4的注出口封蓋的旋轉式開封刃旋轉來切斷封閉薄片7而開封液體取出口5之形式的紙容器的情形時，封閉薄片7不會纏住旋轉式開封刃，可以容易地將封閉薄片7切斷而能夠完美地對液體取出口5進行開口。 又，在將吸管戳刺於封閉薄片7來開封液體取出口5之形式的紙容器之情形時，封閉薄片7不會拉伸而可以順利地以吸管戳刺。According to the paper container of the first example constructed as described above, the sealing sheet 7 for closing the through hole 6 as the liquid outlet 5 provided on the top surface 4 of the paper container is exposed to the through hole. The surface of 7 is provided with a fragile portion 11 modified by laser irradiation treatment, so the rotary unsealing blade embedded in the spout opening cover provided on the top surface 4 is rotated to cut the sealing sheet 7 In the case of opening a paper container in the form of the liquid outlet 5, the closing sheet 7 will not be entangled with the rotary opening blade, and the closing sheet 7 can be easily cut and the liquid outlet 5 can be perfectly opened. In addition, when a straw is pierced on the sealing sheet 7 to open a paper container in the form of the liquid outlet 5, the sealing sheet 7 is not stretched and can be smoothly pierced with the straw.

又，在第1例中，由於在紙基材1與積層於紙基材1之背面的合成樹脂層3之間，積層有阻氣性樹脂層8，所以可以防止氣體從外部往紙容器內透過，又，由於阻氣性樹脂層8並不會妨礙藉由雷射照射處理所進行之封閉薄片7的改質，所以即使是已積層有阻氣性樹脂層8的封閉薄片7，也可以設置由雷射照射處理所形成的脆弱部9。Also, in the first example, since the gas barrier resin layer 8 is laminated between the paper base 1 and the synthetic resin layer 3 laminated on the back of the paper base 1, it is possible to prevent gas from entering the paper container from the outside. In addition, since the gas barrier resin layer 8 does not hinder the modification of the sealing sheet 7 by the laser irradiation treatment, even the sealing sheet 7 in which the gas barrier resin layer 8 has been laminated can be used. The fragile portion 9 formed by laser irradiation processing is provided.

又，設在露出於透孔6之封閉薄片7的面上的脆弱部9，是以與開封手段相對應之方式，例如，在使內藏於注出口封蓋的旋轉式開封刃旋轉來切斷封閉薄片7而開封液體取出口5之形式的紙容器的情形時，是沿著透孔6的內周設成環狀；又，在將吸管戳刺於封閉薄片7來開封液體取出口5之形式的紙容器的情形時，藉由將脆弱部9以設置於透孔6的中央之方式來實施，可謀得縮短雷射照射處理時間。In addition, the fragile portion 9 provided on the surface of the closing sheet 7 exposed to the through hole 6 is cut in a manner corresponding to the unsealing means, for example, by rotating a rotary unsealing blade embedded in the cap of the spout In the case of a paper container in the form of breaking the sealing sheet 7 and opening the liquid outlet 5, it is formed in a ring shape along the inner circumference of the through hole 6; In the case of a paper container, by implementing the fragile portion 9 in the center of the through hole 6, the laser irradiation processing time can be shortened.

又，對於上述雷射照射處理，在第1例中，由於是二氧化碳雷射，雷射光的焦點寬度較寬廣，且亦可取得焦點深度，所以在將由雷射照射處理進行改質處理後的脆弱部9沿著透孔6的內周設成環狀之情形時，可以容易地進行較寬廣之環狀的照射，藉此，對於注出口封蓋的位置偏離，可以加寬其許容範圍。又，在將由雷射照射處理進行改質處理後的脆弱部9設於透孔6的中央之情形時，可以容易地對中央進行較大直徑的照射，藉此，對於吸管的戳刺位置偏離，可以加寬其許容範圍。Also, regarding the above-mentioned laser irradiation treatment, in the first example, since it is a carbon dioxide laser, the focal width of the laser light is wide and the focal depth can also be obtained. Therefore, it is fragile after the laser irradiation treatment is modified. When the portion 9 is provided in a ring shape along the inner circumference of the through hole 6, a wider ring shape can be irradiated easily, and thereby, the tolerance range of the position deviation of the spout cap can be widened. In addition, when the fragile portion 9 modified by the laser irradiation process is provided in the center of the through hole 6, the center can be easily irradiated with a larger diameter, thereby deviating the stab position of the straw , Can broaden its tolerance range.

又，雷射照射處理，由於其輸出以10W～30W，掃描速度以400mm/秒～700mm/秒來進行，雷射光照射過的封閉薄片7會藉由熱而收縮變脆弱，藉由雷射照射處理而設於封閉薄片7的脆弱部9，可以藉由內藏於注出口封蓋的旋轉式開封刃而容易地被切斷，並且，可以容易地將吸管戳刺於脆弱部。In addition, since the laser irradiation process is performed at an output of 10W to 30W and a scanning speed of 400mm/sec to 700mm/sec, the sealing sheet 7 irradiated by the laser light shrinks and becomes fragile by heat. The fragile part 9 provided in the sealing sheet 7 for processing can be easily cut by the rotary opening blade built in the cap of the spout, and the straw can be easily pierced to the fragile part.

第5圖、第6圖，是顯示本發明的紙容器之實施形態的第2例，第5圖是第2例的紙容器的部分放大斷面圖；第6圖是顯示第5圖所示之封閉薄片的一例的放大斷面圖。 對於第2例的紙容器，其與第1例相同之構成者標示相同的符號並省略其說明。Figures 5 and 6 show a second example of the embodiment of the paper container of the present invention. Figure 5 is a partially enlarged cross-sectional view of the paper container of the second example; An enlarged cross-sectional view of an example of the closed sheet. For the paper container of the second example, the same components as those of the first example are designated by the same symbols, and the description thereof will be omitted.

第2例的紙容器，是與第1例同樣地，是藉由將合成樹脂層2、3積層於表背面的紙基材1所形成，並於頂面4設有成為液體取出口5的透孔6，且透孔6是利用由合成樹脂所形成的封閉薄片7而能夠開封地被封閉著。 在第2例，用以封閉透孔6的封閉薄片7，是由熔著薄片10所構成，其熔著在透孔6之周圍的背面側的合成樹脂層3(請參照第5圖)。The paper container of the second example is the same as the first example. It is formed by laminating synthetic resin layers 2 and 3 on the paper substrate 1 on the front and back sides, and the top surface 4 is provided with a liquid outlet 5 The through hole 6 is closed so that the through hole 6 can be opened by a sealing sheet 7 formed of a synthetic resin. In the second example, the sealing sheet 7 for sealing the through hole 6 is composed of a fusion sheet 10, which is fused to the synthetic resin layer 3 on the back side around the through hole 6 (please refer to FIG. 5).

對於熔著薄片10，係可使用：低密度聚乙烯、中密度聚乙烯、高密度聚乙烯、線形低密度聚乙烯、聚酯、共聚酯、使用茂金屬系觸媒所合成的低密度聚乙烯等之合成樹脂的單層、複數層的薄片、或是以阻氣性樹脂層作為芯層的積層體亦可。For the fuse sheet 10, the system can be used: low density polyethylene, medium density polyethylene, high density polyethylene, linear low density polyethylene, polyester, copolyester, low density polyethylene synthesized using metallocene catalysts A single layer of synthetic resin, such as ethylene, a sheet of multiple layers, or a laminate with a gas barrier resin layer as a core layer may also be used.

在第2例中，如第6圖所示，熔著薄片10是成為：以阻氣性樹脂層11作為芯層並於其兩面側積層有合成樹脂層12、13的積層體。 作為形成阻氣性樹脂層11之阻氣性樹脂者，係有：聚對苯二甲酸乙二酯(PET)、非結晶共聚酯、乙烯/乙烯醇共聚物(EVOH)等。在第2例中是使用聚對苯二甲酸乙二酯。又，作為合成樹脂層12、13者，在第2例中是使用低密度聚乙烯。In the second example, as shown in FIG. 6, the fusion sheet 10 is a laminate in which the gas barrier resin layer 11 is used as a core layer and synthetic resin layers 12 and 13 are laminated on both sides. Examples of the gas barrier resin forming the gas barrier resin layer 11 include polyethylene terephthalate (PET), amorphous copolyester, ethylene/vinyl alcohol copolymer (EVOH), and the like. In the second example, polyethylene terephthalate is used. In addition, as the synthetic resin layers 12 and 13, low-density polyethylene is used in the second example.

又，對於阻氣性樹脂層11、合成樹脂層12、13的厚度，在第2例中，阻氣性樹脂層11為12μm，表面側的合成樹脂層12為30μm，背面側的合成樹脂層13為55μm，不過並不受此所限定。Regarding the thickness of the gas barrier resin layer 11 and the synthetic resin layers 12, 13, in the second example, the gas barrier resin layer 11 is 12 μm, the synthetic resin layer 12 on the surface side is 30 μm, and the synthetic resin layer on the back side is 30 μm. 13 is 55 μm, but it is not limited thereto.

於成為如此所構成之封閉薄片7的熔著薄片10中，是與第1例同樣地，在露出於透孔6的面上，設有藉由雷射照射處理進行改質處理後的脆弱部9。設在露出於透孔6之熔著薄片10的面上的脆弱部9，與第1例同樣地，可以是如第1例的第2圖以點狀所示之方式，在露出於透孔6的前表面設置藉由雷射照射處理進行改質處理後的脆弱部9；又，亦可以與開封手段相對應，例如，在使內藏於注出口封蓋的旋轉式開封刃旋轉來切斷熔著薄片10而開封液體取出口5之形式的紙容器的情形時，該脆弱部9係如第1例的第3圖以點狀所示之方式，沿著透孔6的內周設成環狀；又，在將吸管戳刺於熔著薄片10來開封液體取出口5之形式的紙容器的情形時，該脆弱部9係如第1例的第4圖以點狀所示，以設於透孔6的中央之方式來實施亦可。In the fusion sheet 10 that becomes the sealing sheet 7 constructed in this way, as in the first example, the surface exposed to the through hole 6 is provided with a fragile portion after being modified by laser irradiation. 9. The fragile portion 9 provided on the surface of the fusion sheet 10 exposed in the through hole 6 may be the same as in the first example, and may be exposed in the through hole as shown in dots in Figure 2 of the first example. The front surface of 6 is provided with a fragile portion 9 modified by laser irradiation treatment; it can also correspond to the opening means, for example, by rotating a rotary opening blade built into the cap of the spout to cut In the case of a paper container in the form of breaking the fuse sheet 10 and opening the liquid outlet 5, the fragile portion 9 is formed in a ring along the inner circumference of the through hole 6 as shown in dots in Figure 3 of the first example. In addition, when the straw is pierced in the fusion sheet 10 to open the liquid outlet 5 in the form of a paper container, the fragile portion 9 is shown as a dot in Figure 4 of the first example to set It can also be implemented in the center of the through hole 6.

對於用以對熔著薄片10進行改質處理的雷射照射處理，是與第1例同樣地，雖可使用二氧化碳雷射、UV雷射等，不過以二氧化碳雷射為佳。在第2例中是藉由二氧化碳雷射來進行雷射照射處理。Regarding the laser irradiation treatment for reforming the fusion sheet 10, it is the same as in the first example. Although carbon dioxide lasers, UV lasers, etc. can be used, carbon dioxide lasers are preferred. In the second example, a carbon dioxide laser is used for laser irradiation.

又，由二氧化碳雷射所進行的雷射照射處理，是與第1例同樣地，以其輸出為10W～30W，掃描速度為400mm/秒～700mm/秒對封閉薄片7的面進行雷射光照射為佳。In addition, the laser irradiation process performed by the carbon dioxide laser is the same as in the first example. The laser light is irradiated on the surface of the sealing sheet 7 with the output of 10W-30W and the scanning speed of 400mm/sec-700mm/sec. Better.

如上述所構成之第2例的紙容器的效果，由於是與第1例相同，故援用第1例的說明。Since the effect of the paper container of the second example constructed as described above is the same as that of the first example, the description of the first example is used.

1:紙基材 2,3:合成樹脂層 4:頂面 5:液體取出口 6:透孔 7:封閉薄片 8:阻氣性樹脂層 9:脆弱部 10:熔著薄片 11:阻氣性樹脂層 12,13:合成樹脂層1: Paper substrate 2, 3: Synthetic resin layer 4: top surface 5: Liquid outlet 6: Through hole 7: closed sheet 8: Gas barrier resin layer 9: Fragile Department 10: Fused flakes 11: Gas barrier resin layer 12, 13: Synthetic resin layer

[第1圖]是顯示本發明的紙容器之實施形態的第1例的部分放大斷面圖。 [第2圖]是顯示設於封閉薄片之脆弱部的一例的說明圖。 [第3圖]是顯示設於封閉薄片之脆弱部的其他例的說明圖。 [第4圖]是顯示設於封閉薄片之脆弱部的其他例的說明圖。 [第5圖]是顯示本發明的紙容器之實施形態的第2例的部分放大斷面圖。 [第6圖]是顯示第5圖所示之封閉薄片的一例的放大斷面圖。[Figure 1] is a partially enlarged cross-sectional view showing the first example of the embodiment of the paper container of the present invention. [Figure 2] is an explanatory diagram showing an example of the fragile portion provided in the sealing sheet. [Figure 3] is an explanatory diagram showing another example of the fragile portion provided in the sealing sheet. [Figure 4] is an explanatory diagram showing another example of the fragile portion provided in the sealing sheet. [Figure 5] is a partially enlarged cross-sectional view showing a second example of the embodiment of the paper container of the present invention. [Fig. 6] is an enlarged cross-sectional view showing an example of the sealing sheet shown in Fig. 5.

4:頂面 4: top surface

5:液體取出口 5: Liquid outlet

6:透孔 6: Through hole

7:封閉薄片 7: closed sheet

9:脆弱部 9: Fragile Department

Claims (9)

一種紙容器，是藉由將合成樹脂層積層於表背面的紙基材所形成，並於頂面設有成為液體取出口的透孔，且上述透孔是利用由合成樹脂所形成的封閉薄片而能夠開封地被封閉著，其特徵在於： 上述封閉薄片，係在露出於上述透孔的面上，設有藉由雷射照射處理進行改質處理後的脆弱部。A paper container is formed by laminating synthetic resin on a paper base material on the front and back, and is provided with a through hole that becomes a liquid outlet on the top surface, and the through hole is a closed sheet formed of synthetic resin But it can be opened and closed, which is characterized by: The sealing sheet is provided on the surface exposed to the through hole, and is provided with a fragile portion after being reformed by a laser irradiation process. 如請求項1所述的紙容器，其中， 由上述合成樹脂所形成的封閉薄片，是由積層於上述紙基材之表背面的合成樹脂層在上述透孔內積層成一體者所構成。The paper container according to claim 1, wherein The sealing sheet formed of the synthetic resin is composed of synthetic resin layers laminated on the front and back surfaces of the paper base material in the through holes. 如請求項2所述的紙容器，其中， 在上述紙基材與積層於上述紙基材之背面的合成樹脂層之間，積層有阻氣性樹脂層。The paper container according to claim 2, wherein: A gas barrier resin layer is laminated between the paper base material and the synthetic resin layer laminated on the back surface of the paper base material. 如請求項1所述的紙容器，其中， 由上述合成樹脂所形成的封閉薄片，是由熔著薄片由所構成，且熔著在上述透孔之周圍的背面側的合成樹脂層。The paper container according to claim 1, wherein The sealing sheet formed of the above-mentioned synthetic resin is a synthetic resin layer which is composed of a fused sheet and is fused on the back side around the above-mentioned through hole. 如請求項4所述的紙容器，其中， 上述熔著薄片，是以阻氣性樹脂層作為芯層並於該阻氣性樹脂層的兩面側積層有合成樹脂層的積層體。The paper container according to claim 4, wherein: The above-mentioned fusion sheet is a laminate in which a gas barrier resin layer serves as a core layer and a synthetic resin layer is laminated on both sides of the gas barrier resin layer. 如請求項1至5中之任一項所述的紙容器，其中， 藉由上述雷射照射處理進行改質處理後的脆弱部，是沿著上述透孔的內周設成環狀。The paper container according to any one of claims 1 to 5, wherein: The fragile portion after being reformed by the above-mentioned laser irradiation treatment is formed in a ring shape along the inner circumference of the above-mentioned through hole. 如請求項1至5中之任一項所述的紙容器，其中， 藉由上述雷射照射處理進行改質處理後的脆弱部，是設於上述透孔的中央。The paper container according to any one of claims 1 to 5, wherein: The fragile part after being modified by the above-mentioned laser irradiation treatment is provided in the center of the above-mentioned through hole. 如請求項1至5中之任一項所述的紙容器，其中， 上述雷射照射處理為二氧化碳雷射。The paper container according to any one of claims 1 to 5, wherein: The above-mentioned laser irradiation processing is a carbon dioxide laser. 如請求項8所述的紙容器，其中， 上述雷射照射處理，其輸出為10W～30W，掃描速度為400mm/秒～700mm/秒。The paper container according to claim 8, wherein In the above-mentioned laser irradiation process, the output is 10W-30W, and the scanning speed is 400mm/sec-700mm/sec.
TW109142763A 2019-12-06 2020-12-04 Paper container TW202136124A (en)

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JP2543336Y2 (en) * 1991-03-26 1997-08-06 凸版印刷株式会社 Liquid container with spout
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