WO2021190487A1 - 液体输送系统和内衬袋及其制造方法 - Google Patents

液体输送系统和内衬袋及其制造方法 Download PDF

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Publication number
WO2021190487A1
WO2021190487A1 PCT/CN2021/082330 CN2021082330W WO2021190487A1 WO 2021190487 A1 WO2021190487 A1 WO 2021190487A1 CN 2021082330 W CN2021082330 W CN 2021082330W WO 2021190487 A1 WO2021190487 A1 WO 2021190487A1
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Prior art keywords
liner bag
bag body
discharge port
opposite sides
discharge
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PCT/CN2021/082330
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English (en)
French (fr)
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上海箱箱智能科技有限公司
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Publication date
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Priority to US17/907,068 priority Critical patent/US20230103703A1/en
Priority to EP21776566.8A priority patent/EP4129860A4/en
Priority to JP2022557653A priority patent/JP7487973B2/ja
Publication of WO2021190487A1 publication Critical patent/WO2021190487A1/zh

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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
    • B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
    • B65D77/04—Articles or materials enclosed in two or more containers disposed one within another
    • B65D77/06—Liquids or semi-liquids or other materials or articles enclosed in flexible containers disposed within rigid containers
    • B65D77/061—Liquids or semi-liquids or other materials or articles enclosed in flexible containers disposed within rigid containers the containers being mounted on a pallet
    • 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
    • B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
    • B65D77/04—Articles or materials enclosed in two or more containers disposed one within another
    • B65D77/06—Liquids or semi-liquids or other materials or articles enclosed in flexible containers disposed within rigid containers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B69/00—Unpacking of articles or materials, not otherwise provided for
    • B65B69/0075—Emptying systems for flexible intermediate bulk containers [FIBC]
    • 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
    • B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
    • B65D77/04—Articles or materials enclosed in two or more containers disposed one within another
    • B65D77/06—Liquids or semi-liquids or other materials or articles enclosed in flexible containers disposed within rigid containers
    • B65D77/062—Flexible containers disposed within polygonal containers formed by folding a carton blank
    • B65D77/065—Spouts, pouring necks or discharging tubes fixed to or integral with the flexible container
    • 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
    • B65D88/00—Large containers
    • B65D88/52—Large containers collapsible, i.e. with walls hinged together or detachably connected
    • 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
    • B65D88/00—Large containers
    • B65D88/54—Large containers characterised by means facilitating filling or emptying
    • 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
    • B65D90/00—Component parts, details or accessories for large containers
    • 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
    • B65D90/00—Component parts, details or accessories for large containers
    • B65D90/02—Wall construction
    • B65D90/021—Flexible side walls or doors
    • 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
    • B65D90/00—Component parts, details or accessories for large containers
    • B65D90/02—Wall construction
    • B65D90/08—Interconnections of wall parts; Sealing means therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
    • B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
    • B67D7/02—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes for transferring liquids other than fuel or lubricants
    • B67D7/0216—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes for transferring liquids other than fuel or lubricants by squeezing collapsible or flexible storage containers

Definitions

  • the invention relates to a container, in particular to an inner liner bag for containing liquid.
  • liquid storage and transportation devices there are many liquid storage and transportation devices on the market, including medium-sized bulk containers with lined bags to store and transport solutions.
  • the liner bags used for medium-sized bulk containers on the market generally fall into two categories: six-sided three-dimensional liner bags and two-sided pillow-type liner bags.
  • Three-dimensional lined bags are very difficult to produce. Because each side of the three-dimensional liner needs to be welded, the production efficiency is very low and the cost is high.
  • Pillow-type lining bags are used more and more frequently in the market because of their convenient use and low processing cost.
  • the Chinese patent with application number CN201320108508 discloses a sealed liquid bag, the main part of which is a sealed soft container made of PVC-coated cloth by hot melt welding or high frequency welding; the two ends of the sealed soft container are respectively provided with Liquid inlet valve and liquid outlet valve.
  • the liquid-lined bag works well in general high flow rate and liquid liquid.
  • the liquid discharge is slow and the efficiency is low; after the discharge is completed, the liquid remains in the inner liner bag to a large extent, resulting in waste of cost.
  • external objects such as screw extrusion are used to wrap the liner bag to squeeze out the remaining liquid.
  • the purpose of the present invention is to provide an inner liner bag that is convenient for welding and facilitates the discharge of liquid contained therein, especially viscous liquid.
  • an inner liner bag includes an inner liner body and a discharge port.
  • the discharge port is sealed and connected with the liner bag body, the liner bag body is substantially rectangular, and the liner bag body is composed of two pairs of opposing sides, two pairs of opposing sides. Corresponding adjacent sides of the edges are connected by one or more transition edges.
  • the front sheet and the back sheet are substantially rectangular flexible sheets.
  • the vertical distance between the vertex of each side of the two pairs of opposite sides and the adjacent side is equal to 1/20 to 1/10 of the total length of the side.
  • the angle formed between adjacent sides of all corners of the inner liner bag body is an obtuse angle.
  • the side forming each corner of the liner bag body is a straight side or an arc side.
  • the liner bag has an unfolded state and a folded state.
  • the first pair of opposite sides of the liner bag body are folded upward, so that the inner liner bag body
  • the portion containing the discharge opening faces upward, and the second pair of opposite side portions of the liner bag body are turned upwards toward the discharge opening, so that the edge of the second opposite side portion is adjacent to the discharge opening .
  • the liner bag further has a filling port, and the filling port and the discharge port are located on the front sheet and the back sheet, respectively.
  • the discharge port is closer to the edge of the liner bag body than the filling port.
  • the filling port is located in the middle of the front panel, the discharge port is located in the back panel, and the distance between the edge of the discharge port and the edge of the nearest inner liner bag body is smaller than that of the inner liner bag One quarter of the length.
  • the liner bag has an unfolded state and a folded state.
  • the first pair of opposite side portions of the liner bag body are folded upwards, so that the discharge opening and the The filling port is located on the same plane, and the second pair of opposite sides of the liner bag body are turned upwards toward the filling port, so that the edge of the second opposite side is close to the filling port and the filling port. ⁇ Said discharge port.
  • the volume of the inner liner bag is between 200 liters and 1,250 liters, preferably 250 liters, 1000 liters, or 1200 liters.
  • the liner bag includes a liner bag body and a discharge port, and the liner bag body includes a substantially rectangular front panel and a rear panel.
  • the manufacturing method includes the following steps:
  • the front piece and the back piece are sealed and welded along the circumference, and the discharge port is sealed and connected to the liner bag body, wherein the liner bag body has two pairs of opposite sides, two pairs of opposite sides. Corresponding adjacent sides of the sides are connected by one or more transition edges;
  • a liquid delivery system includes a medium-sized bulk container, a liner bag, and a pusher, wherein the medium-sized bulk container includes a base and a side wall mounted on the base , The base is provided with a discharge channel, the liner bag is placed in a medium-sized bulk container and includes a liner bag body and a discharge port, and the pusher has a pair of rollers, wherein:
  • the inner liner bag includes an inner liner bag body and a discharge port.
  • the inner liner bag body is formed by sealing and welding a front sheet and a back sheet along the circumference, and the discharge port is connected to the inner liner bag body in a sealed manner.
  • the inner bag body is substantially rectangular, and the four corners of the inner bag body are cut off;
  • the discharge port of the liner bag is installed in the discharge channel
  • the pusher is arranged such that when the liquid in the liner bag is discharged, the pusher is placed above the liner bag, and the pair of rollers clamp the top end of the liner bag.
  • the liner bag of the present invention is simple to manufacture and does not form a dammed lake during the liquid discharge process, and is particularly beneficial to the discharge of viscous liquid. After the discharge is completed, there is little liquid residue.
  • Fig. 1 is a schematic diagram showing the structure of an inner liner bag according to a first embodiment of the present invention.
  • Fig. 2 is a schematic diagram showing the structure of an inner liner bag according to a second embodiment of the present invention.
  • Fig. 3 is a schematic diagram showing the structure of an inner liner bag according to a third embodiment of the present invention.
  • FIG. 4 to 7 are schematic diagrams showing the folding process of the liner bag shown in FIG. 1.
  • Figures 8 to 10 show a process of filling a liner bag with liquid according to an embodiment of the present invention.
  • Figures 11 to 13 show a process of filling a liner bag with liquid according to another embodiment of the present invention.
  • 14 to 17 are schematic diagrams showing a process of discharging liquid by the liquid delivery system according to an embodiment of the present invention.
  • Fig. 1 is a schematic diagram showing the structure of an inner liner bag 100 according to a first embodiment of the present invention.
  • the liner bag 100 includes an inner liner bag body 101, a filling port 102 and a discharge port 103.
  • the inner bag body 101 is formed by sealing and welding the front piece 1011 and the back piece 1012 along the circumference.
  • the main welding line 100a of the inner bag is formed on the peripheral edge of the inner bag main body 101.
  • the front sheet 1011 and the back sheet 1012 are substantially rectangular flexible sheets.
  • the front and back pieces are usually made of plastic.
  • the filling port 102 and the discharge port 103 are in sealed connection with the body of the liner bag.
  • the filling port 102 and the discharge port 103 are welded on the front piece 1011 and the back piece 1012, respectively.
  • the discharge port 103 is closer to the edge of the inner liner bag body than the filling port 102.
  • the filling port 102 is located in the middle of the front sheet, the discharge port is located on the back sheet, and the distance between the edge of the discharge port and the edge of the nearest inner liner bag body is less than one-fourth of the length of the inner liner bag.
  • the liner bag body 101 is rectangular as a whole, and its shape is basically a rectangular shape formed by removing four corners. During production, the four corners of the front and back pieces can be cut off first, and then sealed and welded along the circumference, or the rectangular front and back pieces can be sealed and welded around the circumference, and then the four corners can be cut off. And weld the excised parts.
  • the filling port and the discharge port may be sealed and connected to the front piece and the back piece before or after the front piece and the back piece are welded together, respectively.
  • the liner bag body 101 has two pairs of opposite sides 1013, 1014, 1015, and 1016. Corresponding adjacent sides of the two pairs of opposite sides are connected by a transition side 1017, 1018, 1019, 1020.
  • the transition edge can be a straight edge or an arc edge.
  • Figure 1 shows straight edges.
  • the angles A, B, C, D, and E formed between each side edge and the transition edge are obtuse angles.
  • the liner bag body 101 has four corners 1021, 1022, 1023, and 1024.
  • the angle formed between the adjacent edges of all corners of the liner bag body 101 is an obtuse angle.
  • the vertical distance between the vertex of each side of the two pairs of opposite sides and the adjacent side is equal to 1/20 ⁇ 1/10 of the total length of the side, preferably 1/ of the total length of the side. 15 ⁇ 1/10.
  • FIG. 2 is a schematic diagram showing the structure of an inner liner bag 200 according to a second embodiment of the present invention.
  • the difference between the liner bag 200 of the embodiment shown in FIG. 2 and the liner bag 100 shown in FIG. 1 is that at least one corner of the liner bag 200 has a plurality of transition edges 201.
  • Figure 2 shows that one of the corners has two transition edges. It should be understood that each of 2, 3, or 4 corners may have more than 2 transition edges.
  • the transition edge can be a straight line or an arc. The rest is the same and will not be described in detail here.
  • FIG. 3 is a schematic diagram showing the structure of an inner liner bag 300 according to a third embodiment of the present invention.
  • the structure and manufacturing method of the inner liner bag may be the same as the inner liner bag 100 shown in FIG. 1 or the inner liner bag 200 shown in FIG. 2, and will not be described in detail here.
  • the size (namely volume) of the inner liner bag is between 200 liters and 1250 liters, preferably 250 liters, 1000 liters or 1200 liters.
  • the three sizes of the inner liner bags correspond to the front and back sheets respectively. Approximately 0.95m*1.55m, 2.1m*2.25m and 2.1m*2.45m.
  • FIG. 4 to 7 are schematic diagrams showing the folding process of the liner bag 100 shown in FIG. 1.
  • the liner bag of the present application has an unfolded state and a folded state.
  • the first pair of opposite sides 104 and 105 of the liner bag body 101 are folded upward, and the part of the liner bag body containing the discharge opening 103 faces upwards, so that the discharge opening and the filling opening are on the same plane ,
  • the second pair of opposite side portions 106 and 107 of the liner bag body are turned upwards toward the filling port, so that the edge of the second opposite side portion is close to the filling port and the discharge port.
  • the first pair of opposite sides of the liner bag body are first folded toward the filling port, so that the discharge port and the filling port are on the same plane, and the liner bag
  • the second pair of opposite side edges of the body are folded toward the filling port, so that the edges of the second opposite side edges are adjacent to the filling port and the discharge port. This completes the folding.
  • the folding process of the inner bag 200 and 300 shown in FIGS. 2 and 3 is the same as the folding process of the inner bag 100 shown in FIG. 1, and will not be described in detail here.
  • FIGS. 8 to 10 show the process of liquid filling of the liner bag 100 according to an embodiment of the present invention.
  • the filling port 102 is connected to the pipe 500, and then the liquid is filled into the liner bag 100 via the pipe 300.
  • 11 to 13 show a process of filling a liner bag 300 with liquid according to another embodiment of the present invention.
  • the liner bag 300 is first laid flat on the bottom of the intermediate bulk container (IBC) 400, and the discharge port 301 is installed in the discharge channel of the intermediate bulk container.
  • the discharge port 102 is connected to the pipe 500, and then the liquid is poured into the liner bag 100 via the pipe 500.
  • the liquid delivery system 600 includes a medium-sized bulk container 400, a liner bag, and a pusher 700.
  • the medium-sized bulk container 400 includes a base 401 and a side wall 402 mounted on the base.
  • a discharge channel 4011 is provided on the base 401.
  • the liner bag is placed in the medium-sized bulk container and the discharge port of the liner bag is installed in the discharge channel.
  • the pusher 700 has a pair of rollers 701.
  • the pusher can be the pusher disclosed in the Chinese Invention Patent Application No. 201710656555.5, the full text of which is incorporated herein by reference.
  • the pusher can also be a pusher known in the art or to be developed.
  • the pusher is placed above the liner bag, and a pair of rollers clamp the top of the liner bag. Then open the valve installed outside the discharge channel of the intermediate bulk container and start the pusher.
  • a pair of rollers of the pusher roll to squeeze the inner liner bag, thereby squeezing the liquid down, reducing the liquid remaining on the bag body.
  • the squeezer will automatically drop with the decrease of the liquid in the inner liner bag.
  • the corners are no longer conventional right angles, thereby solving the problem of the dammed lake of the inner liner bag, and there is no dead corner of liquid retention, so that the residual amount after discharge is small.
  • the structure is simple, the folding and filling operations are simple, and the cost is saved, and it is especially suitable for the containment and transportation of viscous liquids.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)
  • Basic Packing Technique (AREA)

Abstract

一种液体输送系统（600）和内衬袋（100，200，300）及制造方法。内衬袋（100，200，300）包括内衬袋本体（101）和排放口（103），内衬袋本体（101）由前片（1011）和后片（1012）沿四周密封焊接而成，且排放口（103）与内衬袋本体（101）密封连接。内衬袋本体（101）呈实质上长方形，且内衬袋本体（101）具有两对相对的侧边（1013，1014，1015，1016），两对相对的侧边（1013，1014，1015，1016）中对应的相邻侧边之间通过一条或多条过渡边（1017，1018，1019，1020，201）连接。

Description

液体输送系统和内衬袋及其制造方法
相关申请交叉引用
本专利申请要求于2020年03月23日提交的、申请号为2020102090309、发明名称为“液体输送系统和内衬袋及其制造方法”的中国专利申请的优先权，上述申请的全文以引用的方式并入本文中。
技术领域
本发明涉及容器，具体涉及用于容纳液体的内衬袋。
背景技术
为了液体储存，运输及灌装排放等，目前市场上有很多液体储运装置，其中包括中型散装容器配内衬袋来储运溶液。市场上用于中型散装容器的内衬袋一般为六个面的立体型内衬袋和两个面的枕头型内衬袋两大类。立体型内衬袋在生产中有很大的难度，因为立体的每个面要焊接，所以生产效率很低，成本较高。枕头型内衬袋因为使用方便，加工成本低，目前市场上的使用率越来越高。
申请号为CN201320108508的中国专利公开了一种密封液袋，它的主体部分是采用PVC涂塑布通过热熔焊接或高频焊接制成的密封软体容器；该密封软体容器的两端分别设置有进液阀门和出液阀门。该液体内衬袋在一般高流速，流质液体中使用效果比较好。但是，在粘稠液体的排放中，液体排放慢，效率低；排放完成后液体在内衬袋中残留大，造成成本浪费。一般在排放快结束时会用螺旋挤压等外在物体让此内衬袋缠绕挤出残留的液体。
发明内容
本发明的目的是提供一种焊接方便，并有利于其内容纳的液体，尤其是粘稠液体的排放的内衬袋。
为实现上述目的，根据本发明的一方面，提供了一种内衬袋，所述内衬袋包括内衬袋本体和排放口，所述内衬袋本体由前片和后片沿四周密封焊接而成，且所 述排放口与所述内衬袋本体密封连接，所述内衬袋本体呈实质上长方形，且所述内衬袋本体由具有两对相对的侧边，两对相对的侧边中对应的相邻侧边之间通过一条或多条过渡边连接。
一实施例中，所述前片和所述后片为实质上长方形柔性片体。
一实施例中，两对相对的侧边中每条侧边的顶点与相邻侧边之间的垂直距离等于该条侧边总边长的1/20～1/10。
一实施例中，所述内衬袋本体的所有角部的相邻边之间所形成的角度为钝角。
一实施例中，所述内衬袋本体的形成每个角部的边为直线边或弧线边。
一实施例中，所述内衬袋具有展开状态和折叠状态，在所述折叠状态，所述内衬袋本体的第一对相对的侧部往上翻折，使得所述内衬袋本体的包含所述排放口的部分朝上，以及所述内衬袋本体的第二对相对的侧部朝向所述排放口往上翻折，使得该第二相对的侧部的边缘临近所述排放口。
一实施例中，所述内衬袋还具有灌装口，所述灌装口和所述排放口分别位于所述前片和所述后片。
一实施例中，所述排放口与所述灌装口相比更靠近所述内衬袋本体的边缘。
一实施例中，所述灌装口位于所述前片的中部，所述排放口位于所述后片且所述排放口的边缘与最近的内衬袋本体边缘之间的距离小于内衬袋长度的四分之一。
一实施例中，所述内衬袋具有展开状态和折叠状态，在所述折叠状态，所述内衬袋本体的第一对相对的侧部往上翻折，使得所述排放口和所述灌装口位于同一平面上，以及所述内衬袋本体的第二对相对的侧部朝向灌装口往上翻折，使得该第二相对的侧部的边缘临近所述灌装口和所述排放口。
一实施例中，所述内衬袋的容积在200升～1250升之间，优选地为250升、1000升或1200升。
根据本发明的另一方面，提供了一种内衬袋的制造方法，所述内衬袋包括内衬袋本体和排放口，所述内衬袋本体包括实质上呈长方形的前片和后片，所述制造方法包括以下步骤：
将所述前片和所述后片沿四周密封焊接，以及使得所述排放口与所述内衬袋本体密封连接，其中所述内衬袋本体由具有两对相对的侧边，两对相对的侧边中对应的相邻侧边之间通过一条或多条过渡边连接；
将所述内衬袋本体的第一对相对的侧部往上翻折，使得所述内衬袋本体的包含 所述排放口的部分朝上，以及所述内衬袋本体的第二对相对的侧部朝向所述排放口往上翻折，使得该第二相对的侧部的边缘临近所述排放口。
根据本发明的又一方面，提供了一种液体输送系统，所述液体输送系统包括中型散装容器、内衬袋以及挤推器，其中所述中型散装容器包括底座和安装于底座上的侧壁，所述底座上设有排放通道，所述内衬袋置于中型散装容器内并且包括内衬袋本体和排放口，以及所述挤推器具有一对滚轴，其中：
所述内衬袋包括内衬袋本体和排放口，所述内衬袋本体由前片和后片沿四周密封焊接而成，且所述排放口与所述内衬袋本体密封连接，所述内衬袋本体实质上呈长方形，且所述内衬袋本体的四个角部切除；
所述内衬袋的排放口安装于所述排放通道中；以及
所述挤推器布置成在排放所述内衬袋内的液体时，所述挤推器放置在所述内衬袋上方，所述一对滚轴夹持住所述内衬袋的顶端。
本发明的内衬袋制造简单且不会在液体排放过程中形成堰塞湖，尤其有利于粘稠液体的排放，排放完成后，液体残留少。
附图说明
图1是示出根据本发明的第一实施例的内衬袋的结构示意图。
图2是示出根据本发明的第二实施例的内衬袋的结构示意图。
图3是示出根据本发明的第三实施例的内衬袋的结构示意图。
图4～7是示出图1所示的内衬袋的折叠过程的示意图。
图8～10是示出根据本发明的一实施例的内衬袋的灌装液体的过程。
图11～13是示出根据本发明的另一实施例的内衬袋的灌装液体的过程。
图14～17是示出根据本发明的一实施例的液体输送系统排放液体的过程的示意图。
具体实施方式
以下将结合附图对本发明的各实施例进行详细说明，以便更清楚理解本发明的目的、特点和优点。应理解的是，附图所示的实施例并不是对本发明范围的限制， 而只是为了说明本发明技术方案的实质精神。
在下文的描述中，出于说明各种公开的实施例的目的阐述了某些具体细节以提供对各种公开实施例的透彻理解。但是，相关领域技术人员将认识到可在无这些具体细节中的一个或多个细节的情况来实践实施例。在其它情形下，与本申请相关联的熟知的装置、结构和技术可能并未详细地示出或描述从而避免不必要地混淆实施例的描述。
除非语境有其它需要，在整个说明书和权利要求中，词语“包括”和其变型，诸如“包含”和“具有”应被理解为开放的、包含的含义，即应解释为“包括，但不限于”。
在整个说明书中对“一个实施例”或“一实施例”的提及表示结合实施例所描述的特定特点、结构或特征包括于至少一个实施例中。因此，在整个说明书的各个位置“在一个实施例中”或“在一实施例”中的出现无需全都指相同实施例。另外，特定特点、结构或特征可在一个或多个实施例中以任何方式组合。
如该说明书和所附权利要求中所用的单数形式“一”和“所述”包括复数指代物，除非文中清楚地另外规定。应当指出的是术语“或”通常以其包括“和/或”的含义使用，除非文中清楚地另外规定。
在以下描述中，为了清楚展示本发明的结构及工作方式，将借助诸多方向性词语进行描述，但是应当将“前”、“后”、“左”、“右”、“外”、“内”、“向外”、“向内”、“上”、“下”等词语理解为方便用语，而不应当理解为限定性词语。
图1是示出根据本发明的第一实施例的内衬袋100的结构示意图。如图1所示，内衬袋100包括内衬袋本体101、灌装口102和排放口103。内衬袋本体101由前片1011和后片1012沿四周密封焊接而成。在内衬袋本体101的四周边缘形成内衬袋的主焊接线100a。较佳地，前片1011和后片1012为实质上长方形柔性片体。前片和后片通常由塑料制成。灌装口102和排放口103与内衬袋本体密封连接。具体地，灌装口102和排放口103分别焊接在前片1011和后片1012上。排放口103与灌装口102相比更靠近内衬袋本体的边缘。较佳地，灌装口102位于前片的中部，排放口位于后片且排放口的边缘与最近的内衬袋本体边缘之间的距离小于内衬袋 长度的四分之一。
内衬袋本体101整体上呈长方形，其形状基本上是长方形去除四个角部而形成的。在制作时，可以先将前片和后片的四个角部切除，然后在沿四周密封焊接，也可以先将长方形的前片和后片沿四周密封焊接，然后再切除四个角部，并将切除的部位焊接起来。灌装口和排放口可以在前片和后片焊接在一起之前或者之后分别密封连接于前片和后片。
具体来说，内衬袋本体101具有两对相对的侧边1013、1014、1015、1016。两对相对的侧边中对应的相邻侧边之间通过一条过渡边1017、1018、1019、1020连接。该过渡边可以是直线边，也可以是弧线边。图1所示为直线边。各侧边与过渡边之间形成的角度A、B、C、D、E为钝角。内衬袋本体101具有四个角部1021、1022、1023、1024。当过渡边为直线边时，内衬袋本体101的所有角部的相邻边之间所形成的角度为钝角。两对相对的侧边中每条侧边的顶点与相邻侧边之间的垂直距离等于该条侧边总边长的1/20～1/10，较佳地为总边长的1/15～1/10。
图2是示出根据本发明的第二实施例的内衬袋200的结构示意图。图2所示实施例的内衬袋200与图1所示的内衬袋100的不同之处在于内衬袋200的至少一个角部具有多条过渡边201。图2所示为其中一个角部具有2条过渡边。应理解的是，可以2个、3个或者4个角部均具有2条以上过渡边。过渡边可以是直线，也可以是弧线。其余相同，在此不再详述。
图3是示出根据本发明的第三实施例的内衬袋300的结构示意图。图3所示实施例的内衬袋300与图1、图2所示的内衬袋的不同之处在于内衬袋300不单独设置灌装口，而是将灌装口和排放口集成为一个，即排放口301同时用作灌装口。内衬袋的结构和制造方式可以与图1所示的内衬袋100或者图2所示的内衬袋200相同，在此不再详述。
本文中，内衬袋的规格(即容积)在200升～1250升之间，优选地为250升、1000升或1200升，该三种规格的内衬袋对应的前片和后片尺寸分别约为0.95m*1.55m、2.1m*2.25m和2.1m*2.45m。
图4～7是示出图1所示的内衬袋100的折叠过程的示意图。本申请的内衬袋具有展开状态和折叠状态。在折叠状态，内衬袋本体101的第一对相对的侧部104和105往上翻折，内衬袋本体的包含排放口103的部分朝上，使得排放口和灌装口位于同一平面上，以及内衬袋本体的第二对相对的侧部106和107朝向灌装口往上 翻折，使得该第二相对的侧部的边缘临近灌装口和排放口。作为示例，在内衬袋100的折叠过程中，首先将内衬袋本体的第一对相对的侧边朝向灌装口折叠，使得排放口和灌装口位于同一平面上，以及将内衬袋本体的第二对相对的侧边朝向灌装口折叠，使得该第二相对的侧边的边缘临近灌装口和排放口。由此完成折叠。图2和图3所示的内衬袋200、300的折叠过程与图1所示的内衬袋100的折叠过程相同，在此不再详述。
图8～10是示出根据本发明的一实施例的内衬袋100的灌装液体的过程。如图所示，在灌装过程中，首先将内衬袋100平放于中型散装容器(IBC)400的底部，灌装口102朝上，并将排放口103安装于中型散装容器的排放通道中。接着，灌装口102连接管道500，然后经由管道300将液体灌装入内衬袋100中。
图11～13是示出根据本发明的另一实施例的内衬袋300的灌装液体的过程。如图所示，在灌装过程中，首先将内衬袋300平放于中型散装容器(IBC)400的底部，并将排放口301安装于中型散装容器的排放通道中。接着，排放口102连接管道500，然后经由管道500将液体灌装入内衬袋100中。
图14～17是示出根据本发明的一实施例的液体输送系统600排放液体的过程的示意图。如图14～17所示，液体输送系统600包含中型散装容器400、内衬袋以及挤推器700，其中，中型散装容器400包括底座401和安装于底座上的侧壁402。底座401上设有排放通道4011。内衬袋置于中型散装容器内且内衬袋的排放口安装于排放通道中。挤推器700具有一对滚轴701。挤推器可以采用申请号为201710656555.5中国发明专利申请所公开的挤推器，其全文以引用的方式纳入本文。挤推器也可以采用本领域已知的或待开发的挤推器。
在排放过程中，挤推器放置在内衬袋上方，且一对滚轴夹持住内衬袋的顶端。然后打开安装于中型散装容器排放通道外的阀门，并启动挤推器。在排放过程中，挤推器的一对滚轴滚动，对内衬袋进行挤压，由此将液体往下挤，减少残留在袋体上的液体。排放过程中，挤推器将随之内衬袋液体的减少而自动下降。
本发明的内衬袋由于对所有角部进行了改进，各个角部不再是常规的直角，由此解决了内衬袋的堰塞湖问题，没有液体滞留死角，从而排放后残留量少。另外，结构简单，折叠和灌装操作简单，节省成本，其尤其适于粘性液体的容纳和运输。
以上已详细描述了本发明的较佳实施例，但应理解到，在阅读了本发明的上述讲授内容之后，本领域技术人员可以对本发明作各种改动或修改。这些等 价形式同样落于本申请所附权利要求书所限定的范围。

Claims (12)

  1. 一种内衬袋，所述内衬袋包括内衬袋本体和排放口，所述内衬袋本体由前片和后片沿四周密封焊接而成，且所述排放口与所述内衬袋本体密封连接，其特征在于：所述内衬袋本体呈实质上长方形，且所述内衬袋本体由具有两对相对的侧边，两对相对的侧边中对应的相邻侧边之间通过一条或多条过渡边连接。
  2. 如权利要求1所述的内衬袋，其特征在于，所述前片和所述后片为实质上长方形柔性片体。
  3. 如权利要求1所述的内衬袋，其特征在于，两对相对的侧边中每条侧边的顶点与相邻侧边之间的垂直距离等于该条侧边总边长的1/20～1/10。
  4. 如权利要求1所述的内衬袋，其特征在于，所述内衬袋本体的所有角部的相邻边之间所形成的角度为钝角。
  5. 如权利要求1所述的内衬袋，其特征在于，所述内衬袋本体的形成每个角部的边为直线边或弧线边。
  6. 如权利要求1所述的内衬袋，其特征在于，所述内衬袋具有展开状态和折叠状态，在所述折叠状态，所述内衬袋本体的第一对相对的侧部往上翻折，使得所述内衬袋本体的包含所述排放口的部分朝上，以及所述内衬袋本体的第二对相对的侧部朝向所述排放口往上翻折，使得该第二相对的侧部的边缘临近所述排放口。
  7. 如权利要求1所述的内衬袋，其特征在于，所述内衬袋还具有灌装口，所述灌装口和所述排放口分别位于所述前片和所述后片，所述排放口与所述灌装口相比更靠近所述内衬袋本体的边缘。
  8. 如权利要求1所述的内衬袋，其特征在于，所述内衬袋具有展开状态和折叠状态，在所述折叠状态，所述内衬袋本体的第一对相对的侧部往上翻折，使得所述排放口和所述灌装口位于同一平面上，以及所述内衬袋本体的第二对相对的侧部朝向灌装口往上翻折，使得该第二相对的侧部的边缘临近所述灌装口和所述排放口。
  9. 如权利要求1所述的内衬袋，其特征在于，所述内衬袋的容积在200升～1250升之间。
  10. 如权利要求1所述的内衬袋，其特征在于，所述内衬袋的容积为250升、1000升或1200升。
  11. 一种内衬袋的制造方法，所述内衬袋包括内衬袋本体和排放口，所述内衬 袋本体包括实质上呈长方形的前片和后片，其特征在于，所述制造方法包括以下步骤：
    将所述前片和所述后片沿四周密封焊接，以及使得所述排放口与所述内衬袋本体密封连接，其中所述内衬袋本体由具有两对相对的侧边，两对相对的侧边中对应的相邻侧边之间通过一条或多条过渡边连接；
    将所述内衬袋本体的第一对相对的侧部往上翻折，使得所述内衬袋本体的包含所述排放口的部分朝上，以及所述内衬袋本体的第二对相对的侧部朝向所述排放口往上翻折，使得该第二相对的侧部的边缘临近所述排放口。
  12. 一种液体输送系统，所述液体输送系统包括中型散装容器、内衬袋以及挤推器，其中所述中型散装容器包括底座和安装于底座上的侧壁，所述底座上设有排放通道，所述内衬袋置于中型散装容器内并且包括内衬袋本体和排放口，以及所述挤推器具有一对滚轴，其中：
    所述内衬袋包括内衬袋本体和排放口，所述内衬袋本体由前片和后片沿四周密封焊接而成，且所述排放口与所述内衬袋本体密封连接，所述内衬袋本体实质上呈长方形，且所述内衬袋本体的四个角部切除；
    所述内衬袋的排放口安装于所述排放通道中；以及
    所述挤推器布置成在排放所述内衬袋内的液体时，所述挤推器放置在所述内衬袋上方，所述一对滚轴夹持住所述内衬袋的顶端。
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