EP4357271A1 - Conteneur intermédiaire souple pour le transport et le stockage de marchandises en vrac - Google Patents

Conteneur intermédiaire souple pour le transport et le stockage de marchandises en vrac Download PDF

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Publication number
EP4357271A1
EP4357271A1 EP22216658.9A EP22216658A EP4357271A1 EP 4357271 A1 EP4357271 A1 EP 4357271A1 EP 22216658 A EP22216658 A EP 22216658A EP 4357271 A1 EP4357271 A1 EP 4357271A1
Authority
EP
European Patent Office
Prior art keywords
polypropylene
bulk container
flexible intermediate
intermediate bulk
sidewall
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP22216658.9A
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German (de)
English (en)
Inventor
Piero Schinasi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Codefine International SA
Original Assignee
Codefine International SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Codefine International SA filed Critical Codefine International SA
Priority to PCT/IB2023/060521 priority Critical patent/WO2024084411A1/fr
Publication of EP4357271A1 publication Critical patent/EP4357271A1/fr
Pending legal-status Critical Current

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Classifications

    • 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
    • B65D88/16—Large containers flexible
    • B65D88/1612—Flexible intermediate bulk containers [FIBC]
    • B65D88/1618—Flexible intermediate bulk containers [FIBC] double-walled or with linings
    • 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
    • B65D88/16—Large containers flexible
    • B65D88/1612—Flexible intermediate bulk containers [FIBC]
    • B65D88/1675—Lifting fittings
    • B65D88/1681—Flexible, e.g. loops, or reinforcements therefor
    • B65D88/1687—Flexible, e.g. loops, or reinforcements therefor specially adapted for the forks of a forklift

Definitions

  • the present invention generally relates to a flexible intermediate bulk container, or "FIBC", for the transport and storage of bulk goods.
  • FIBC flexible intermediate bulk container
  • Flexible intermediate bulk containers are conventionally made of pieces of flexible fabric material consisting of one or multiple layers of a woven fabric comprising woven strands produced out of polypropylene (PP).
  • PP polypropylene
  • a solution that has been contemplated in the art is to put in place a fully circular approach, creating a circular economy in which FIBCs are produced, used and recycled in a closed-loop system to produce new FIBCs.
  • One such approach is disclosed in Issue No. 252 of Dry Cargo International (https://www.drycargomag.com/), November 2021, "Closed-loop technology for FIBCs: Starlinger's green solution", pp. 113-117 .
  • a fundamental requirement for this approach to be applicable in practice hinges on the recycling of the FIBCs which must be designed to facilitate recycling in the first place.
  • the real challenge is however to ensure complete traceability of the FIBCs throughout the lifecycle to create a uniform material stream to ensure the required quality of the material to be recycled.
  • the aforementioned approach thus contemplates an important and essential step, namely, the generation of a material passport for each FIBC in which the entire lifecycle of the FIBC is documented, from the materials used for its production, up to the last filling operation and the nature of the filled products. While traceability can thereby be ensured, this inevitably generates and imposes additional logistical and practical constraints that can hardly be maintained in practice. This furthermore requires all stakeholders to commit to ensuring that absolute traceability is guaranteed throughout the FIBC lifecycle. It is only at this cost that one can guarantee that the FIBCs that are being recycled are similar in composition and show the lowest possible degrees of contamination.
  • Used FIBCs can be collected and prepared for recycling by being scrupulously sorted and cleaned, before the relevant constituents thereof can be segregated, if necessary, into different types of plastic materials that may potentially require different recycling steps.
  • Polypropylene (PP) material which is predominantly used in the industry to produce FIBCs, can suitably be recycled by shredding the relevant PP constituents, after cleaning and sorting, before being compounded using e.g. an extruder which melts down the shredded particles and creates recycled plastic pellets, or granulate, namely, recycled polypropylene (rPP) - also referred to as polypropylene regranulate - that can be used again to produce new products.
  • rPP recycled polypropylene
  • New FIBCs may be produced using recycled polypropylene (rPP) but - unless a fully circular, closed-loop approach is applied as previously discussed - one cannot ensure in practice that the rPP material being used suitably meets customer and/or regulatory demands, be it from an aesthetic perspective and/or functional perspective. Care should furthermore be taken that the rPP material being used does not negatively impact structural requirements that could be detrimental to the robustness and life expectancy of the FIBCs.
  • rPP material may come in varying colour grades and qualities.
  • a large number of FIBCs are typically provided with prints and like coloured markings, resulting in black or dark-coloured rPP material, which forms the largest source of rPP material on the market.
  • a general aim of the invention is to provide a flexible intermediate bulk container for the transport and storage of bulk goods that obviates the problems and limitations of known flexible intermediate bulk containers.
  • an aim of the invention is to provide such a flexible intermediate bulk container that can be produced at least partly out of recycled polypropylene (rPP) material without compromising practical usability thereof.
  • rPP recycled polypropylene
  • a further aim of the invention is to provide such a flexible intermediate bulk container that can suitably meet customer demands and/or regulatory requirements, despite the use of recycled polypropylene (rPP) material.
  • rPP recycled polypropylene
  • Yet another aim of the invention is to provide such a flexible intermediate bulk container whose construction does not negatively impact its ability to be recycled into recycled polypropylene (rPP), especially into polypropylene regranulate.
  • rPP recycled polypropylene
  • a flexible intermediate bulk container for the transport and storage of bulk goods the features of which are recited in claim 1, namely, such a flexible intermediate bulk container comprising at least a bottom part and a sidewall made of pieces of flexible fabric material.
  • the sidewall includes a woven fabric comprising woven strands produced out of recycled polypropylene (rPP).
  • rPP recycled polypropylene
  • an exterior side of the sidewall comprises a laminated film of biaxially oriented polypropylene (BOPP) or of cast polypropylene (CPP) that is laminated onto an outer side of the woven fabric, which laminated film is provided with an opacifying layer.
  • BOPP biaxially oriented polypropylene
  • CPP cast polypropylene
  • the opacifying layer is a printable layer (especially a white or coloured opacifying layer) that can advantageously be printed with motifs.
  • the opacifying layer itself may consist of a uniform or multicolour printed layer.
  • the opacifying layer may be a substantially opaque layer covering an entirety of a surface of the laminated film with the possible omission of selected portions of the surface of the laminated film to allow the underlying woven fabric to be visible through the laminated film and thereby create visible motifs.
  • the bottom part may likewise include a woven fabric comprising woven strands produced out of recycled polypropylene (rPP).
  • rPP recycled polypropylene
  • an interior side of the sidewall and an interior side of the bottom part each comprise a laminated film of biaxially oriented polypropylene (BOPP) or of cast polypropylene (CPP) that is laminated onto an inner side of the woven fabric.
  • BOPP biaxially oriented polypropylene
  • CPP cast polypropylene
  • a flexible intermediate bulk container for the transport and storage of bulk goods the features of which are recited in independent claim 5, namely, such a flexible intermediate bulk container comprising at least a bottom part and a sidewall made of pieces of flexible fabric material.
  • the bottom part and sidewall each include a woven fabric comprising woven strands produced out of recycled polypropylene (rPP).
  • rPP recycled polypropylene
  • an interior side of the relevant bottom part and/or sidewall comprises a laminated film of biaxially oriented polypropylene (BOPP) or of cast polypropylene (CPP) that is laminated onto an inner side of the woven fabric.
  • the laminated film that is laminated on the inner side of the woven fabric may in particular be a food-grade film.
  • Each laminated film of biaxially oriented polypropylene (BOPP) or of cast polypropylene (CPP) may advantageously be bonded to the woven fabric by means of a polypropylene (PP) bonding agent.
  • PP polypropylene
  • Such bonding agent may be applied with a weight per unit area of approximately 10 to 30 g/m 2 , preferably of the order of 15 g/m 2 .
  • Each laminated film of biaxially oriented polypropylene (BOPP) or of cast polypropylene (CPP) may have a weight per unit area of approximately 10 to 30 g/m 2 , preferably of the order of 15 g/m 2 .
  • the woven fabric is made at more than 30% in weight of woven strands produced out of recycled polypropylene (rPP) and/or the woven fabric comprises less than 70% in weight of woven strands produced out of pure, non-recycled polypropylene (PP).
  • rPP recycled polypropylene
  • PP polypropylene
  • the recycled polypropylene (rPP) may in particular be non-white, non-food grade recycled polypropylene (rPP).
  • the flexible intermediate bulk container of the invention may especially be constructed such that an entirety thereof is recyclable into polypropylene regranulate.
  • the sidewall includes four side panels connected in pairs (for instance by sewing, glueing and/or welding) along adjacent edges to form vertical ridges at four corners of the flexible intermediate bulk container.
  • the flexible intermediate bulk container may furthermore comprise one or more lifting straps each secured to the sidewall so as to rise above a top surface of the flexible intermediate bulk container and/or project outwards from the sidewall, each lifting strap being preferably made of reinforced woven bands produced out of pure, non-recycled polypropylene (PP).
  • the flexible intermediate bulk container may especially include at least one set of four lifting straps that are interconnected in pairs by two sleeves to form tubings or ducts extending longitudinally along the top surface of the flexible intermediate bulk container or along a top portion of the sidewall to allow lifting of the flexible intermediate bulk container by means of a forklift.
  • the two sleeves are preferentially made of flexible fabric material including a woven fabric comprising woven strands produced out of polypropylene (PP), preferably woven strands produced out of recycled polypropylene (rPP).
  • FIG 1 is a photographic illustration of a flexible intermediate bulk container - or FIBC - that is generally designated by reference numeral 100.
  • FIBC 100 exhibits one possible, illustrative configuration that could be contemplated in accordance with the invention, which configuration in essence matches that shown e.g. in Figure 6 of International ( PCT) Publication No. WO 98/54070 A1 .
  • FIBC 100 illustrated in Figure 1 comprises a bottom part 10 and a sidewall 15 made of pieces of flexible fabric material, the precise nature of which will be described hereafter.
  • sidewall 15 includes four side panels connected in pairs along adjacent edges to form vertical ridges at four corners of the flexible intermediate bulk container 100. The side panels may be connected together by any appropriate means, including sewing, glueing, welding, or any combination thereof.
  • FIBC 100 further comprises two sets of four lifting straps 5, 6 (only part of which are visible in Figure 1 ) that are positioned in an upper portion of the FIBC 100 and adequately secured to the sidewall 15.
  • a first set of four lifting straps 5 is provided that are secured in such a way as to rise above a top surface of the FIBC 100.
  • Such lifting straps 5 are typically used for lifting of the FIBC 100 by means of a four-point lifting device.
  • a second set of four lifting straps 6 is provided that are secured to the sidewall 15 is such a way as to project outwards from the sidewall 15, here along two opposite side panels.
  • the lifting straps 6 are interconnected in pairs, as shown, by two sleeves 16 to form tubings or ducts extending longitudinally or along a top portion of the sidewall 15 to allow lifting of the FIBC 100 by means of a forklift (see e.g. Figure 4 of International ( PCT) Publication No. WO 98/54070 A1 ).
  • the sleeves 16 may each be formed of a part of the relevant side panel which is looped back on and secured to itself, in which case the sleeves 16 will be understood to be made of the same flexible fabric material as the relevant side panels.
  • the sleeves 16 may alternatively be made of entirely separate pieces of fabric material that may then be secured or otherwise attached to the sidewall 15.
  • Another illustrative FIBC configuration is disclosed in that regard in International ( PCT) Publication No. WO 2022/123445 A1 in the name of the present Applicant, which is likewise incorporated by reference in its entirety. Such other FIBC configuration could perfectly be adopted in the context of the present invention, it being noted that the sleeves would extend in this case along the top surface of the FIBC 100, rather than along two opposite sides of the FIBC 100.
  • the lifting straps 5, 6 are preferably made of reinforced woven bands produced out of polypropylene (PP) but other materials could potentially be contemplated.
  • the use of polypropylene (PP) to produce the lifting straps 5, 6 is however favoured in that the lifting straps 5, 6 may adequately be recycled into polypropylene regranulate, along with other parts of the FIBC 100 made of polypropylene (PP).
  • the lifting straps 5, 6 are made exclusively of pure, non-recycled polypropylene (PP) to ensure that these lifting straps 5, 6 meet desired structural specifications, especially in terms of strength and resistance.
  • the upper portion of the FIBC 100 may be open or closed by a top part (not shown) provided with a suitable filling spout (as shown e.g. in Figure 6 of International ( PCT) Publication No. WO 98/54070 A1 ).
  • the top part may advantageously be designed in accordance with substantially the same principles as discussed below with regard to the sidewall 15 and bottom part 10.
  • Figure 2 schematically shows a partial, cross-sectional view of a piece of flexible fabric material as used to produce the sidewall 15.
  • the bottom part 10 is likewise produced, in comparable fashion, of a similar piece of flexible fabric material as explained hereafter.
  • the piece of flexible fabric material depicted in Figure 2 includes a woven fabric 20 comprising woven strands produced out of recycled polypropylene (rPP).
  • the woven fabric 20 is made at more than 30% in weight of woven strands produced out of recycled polypropylene (rPP) and/or comprises less than 70% in weight of woven strands produced out of pure, non-recycled polypropylene (PP).
  • an exterior side 15A of the sidewall 15 comprises a laminated film of biaxially oriented polypropylene (BOPP) or of cast polypropylene (CPP), as designated in Figure 2 by reference numeral 21, that is laminated onto the woven fabric 20, namely, on its outer side.
  • This laminated film 21 is further provided with an opacifying layer 21A, which is preferably a printable layer that can be printed with motifs.
  • This opacifying layer 21A may conveniently be applied by printing, especially by gravure printing.
  • the provision of the laminated film 21 and associated opacifying layer 21A on the exterior side 15A of the sidewall 15 is particularly advantageous in that this obviates the potentially negative visual appearance of the underlying woven fabric 20 which is partly made of recycled polypropylene (rPP) and may come up in varying colour grades. Any desired visual appearance can therefore be guaranteed and imparted to the FIBC 100 thanks to the laminated BOPP or CPP film 21 and opacifying layer 21A, irrespective of the actual nature and visual appearance of the underlying woven fabric 20.
  • the use of a BOPP or CPP film as laminated film 21 is furthermore particularly advantageous in that this does not negatively impact the ability for the FIBC 100 to be recycled into polypropylene regranulate.
  • the laminated film 21 is advantageously bonded to the outer side of the woven fabric 20 by means of a polypropylene (PP) bonding agent, shown in Figure 2 as layer 22.
  • PP polypropylene
  • an interior side 15B of the sidewall 15 is likewise provided with a further laminated film of biaxially oriented polypropylene (BOPP) or of cast polypropylene (CPP), as designated by reference numeral 25, that is laminated onto the woven fabric 20, namely, on its inner side.
  • BOPP biaxially oriented polypropylene
  • CPP cast polypropylene
  • the laminated film 25 be a food-grade film in that this will ensure meeting regulatory requirements for storage of any food or agricultural product within the storage volume of the FIBC 100.
  • the laminated film 25 may advantageously be bonded to the inner side of the woven fabric 20 by means of a polypropylene (PP) bonding agent, shown in Figure 2 as layer 26.
  • PP polypropylene
  • such bottom part 10 may likewise advantageously include a woven fabric comprising woven strands produced out of recycled polypropylene (rPP), like the woven fabric 20 shown in Figure 2 .
  • rPP recycled polypropylene
  • at least the interior side, designated 10A, of the bottom part 10 may likewise be provided with the laminated BOPP or CPP film 25, namely, that BOPP or CPP film that is laminated onto the inner side of the woven fabric 20, similarly to the sidewall 15.
  • an exterior side thereof does not need to be provided with any laminated BOPP or CPP film, such as the laminated film 21 depicted in Figure 2 , which may be omitted in such case (along with the layer of bonding agent 22).
  • the laminated film 21 (and associated opacifying layer 21A) may nevertheless be provided, if required or desired, to ensure a substantially uniform visual appearance, including on the underside of the FIBC 100.
  • Each of the laminated films 21, 25 of biaxially oriented polypropylene (BOPP) or of cast polypropylene (CPP) preferably has a weight per unit area of approximately 15 g/m 2 .
  • the polypropylene (PP) bonding agent 22, 26 may likewise be applied with a weight per unit area of approximately 15 g/m 2 .
  • Grammage may however vary, especially from 10 to 30 g/m 2 .
  • the recycled polypropylene (rPP) material used to form part of the sidewall 15 and/or bottom part 10 may especially be a non-white, non-food grade recycled polypropylene (rPP) material, it being understood that the provision of the first and/or second laminated BOPP/CPP films 21, 25 obviates the negative impact that the use of such recycled polypropylene (rPP) material might have on the visual appearance of the FIBC 100 and/or on its ability to be used for storage and transport of food and agricultural products, especially.
  • FIBC 100 may advantageously be constructed in such a way that an entirety thereof can be recycled into polypropylene regranulate, which greatly simplifies recycling operations.
  • the bag is shown as being of generally cubic form, the bag could exhibit a more elongated shape in one direction, for instance be taller or wider, depending on the relevant application.
  • the sidewall could furthermore exhibit a substantially cylindrical form in other embodiments.
  • any suitable number of lifting straps or like lifting points could be contemplated to provide for the ability for the flexible intermediate bulk container to be lifted by adequate lifting means.
  • each of the sidewall and the bottom part of the flexible intermediate bulk container of the invention do not necessarily both have to be made of the same fabric material or include the same proportion of rPP strands, if any.
  • the bottom part 10 could perfectly be made of a piece of woven fabric produced exclusively out of pure, non-recycled polypropylene (PP), while the sidewall 15 is made in accordance with the invention, including a woven fabric comprising a certain proportion by weight of woven strands produced out of recycled polypropylene (rPP) that is sufficient to meet regulatory demands.
  • rPP recycled polypropylene
  • the invention provides for the ability to reach an optimal compromise between regulatory requirements regarding the use of a minimum amount of recycled materials - in this case recycled polypropylene (rPP) - and customer demands, as well as functional, structural and/or aesthetic requirements.
  • the woven fabric may in effect be made of a combination of strands produced out of pure, non-recycled polypropylene (PP) and strands produced out of recycled polypropylene (rPP) or be made exclusively of strands produced out of recycled polypropylene (rPP).
  • the opacifying layer applied on the outer side of the woven fabric is preferably a substantially opaque layer that may conveniently be applied by printing (e.g. gravure printing) so as to cover the entirety of the surface of the laminated BOPP or CPP film.
  • selected portions of the opacifying layer may be omitted in certain places to allow the underlying, coloured woven fabric to be visible through the laminated BOPP or CPP film (which is typically transparent) and thereby create visible motifs.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)
EP22216658.9A 2022-10-18 2022-12-23 Conteneur intermédiaire souple pour le transport et le stockage de marchandises en vrac Pending EP4357271A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/IB2023/060521 WO2024084411A1 (fr) 2022-10-18 2023-10-18 Contenant pour vrac intermédiaire souple pour le transport et le stockage de biens en vrac

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP22202321.0A EP4357270A1 (fr) 2022-10-18 2022-10-18 Conteneur en vrac intermédiaire souple pour le transport et le stockage de marchandises en vrac

Publications (1)

Publication Number Publication Date
EP4357271A1 true EP4357271A1 (fr) 2024-04-24

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Family Applications (2)

Application Number Title Priority Date Filing Date
EP22202321.0A Pending EP4357270A1 (fr) 2022-10-18 2022-10-18 Conteneur en vrac intermédiaire souple pour le transport et le stockage de marchandises en vrac
EP22216658.9A Pending EP4357271A1 (fr) 2022-10-18 2022-12-23 Conteneur intermédiaire souple pour le transport et le stockage de marchandises en vrac

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP22202321.0A Pending EP4357270A1 (fr) 2022-10-18 2022-10-18 Conteneur en vrac intermédiaire souple pour le transport et le stockage de marchandises en vrac

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998054070A1 (fr) 1997-05-28 1998-12-03 Codefine S.A. Sac pour le transport et l'entreposage de marchandises en vrac
US20150183194A1 (en) * 2013-12-30 2015-07-02 Greif Flexibles Trading Holding Bv Laminated fabric shipping sacks, methods of manufacturing, and related systems
WO2015121042A1 (fr) 2014-02-13 2015-08-20 Saudi Basic Industries Corporation Conteneur souple
CN106480527A (zh) * 2015-08-25 2017-03-08 昆明仙织塑业有限公司 一种环保型集装袋扁丝生产方法
WO2020068053A1 (fr) * 2018-09-25 2020-04-02 Bemis Company, Inc. Revêtements pour contenants en vrac
EP4008651A1 (fr) * 2020-12-07 2022-06-08 Codefine International SA Sac pour le transport et le stockage de marchandises en vrac et méthode de fabrication d'un tel sac
JP3238659U (ja) * 2022-04-19 2022-08-10 チャイナパックジャパン株式会社 フレキシブルコンテナ

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998054070A1 (fr) 1997-05-28 1998-12-03 Codefine S.A. Sac pour le transport et l'entreposage de marchandises en vrac
US20150183194A1 (en) * 2013-12-30 2015-07-02 Greif Flexibles Trading Holding Bv Laminated fabric shipping sacks, methods of manufacturing, and related systems
WO2015121042A1 (fr) 2014-02-13 2015-08-20 Saudi Basic Industries Corporation Conteneur souple
US10112769B2 (en) 2014-02-13 2018-10-30 Sabic Global Technologies B.V. Flexible intermediate bulk container (FIBC)
CN106480527A (zh) * 2015-08-25 2017-03-08 昆明仙织塑业有限公司 一种环保型集装袋扁丝生产方法
WO2020068053A1 (fr) * 2018-09-25 2020-04-02 Bemis Company, Inc. Revêtements pour contenants en vrac
EP4008651A1 (fr) * 2020-12-07 2022-06-08 Codefine International SA Sac pour le transport et le stockage de marchandises en vrac et méthode de fabrication d'un tel sac
WO2022123445A1 (fr) 2020-12-07 2022-06-16 Codefine International Sa Sac pour le transport et le stockage de produits en vrac et procédé de fabrication d'un tel sac
JP3238659U (ja) * 2022-04-19 2022-08-10 チャイナパックジャパン株式会社 フレキシブルコンテナ

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