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
  • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
  • B65D81/02—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage
  • B65D81/05—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage maintaining contents at spaced relation from package walls, or from other contents
  • B65D81/051—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage maintaining contents at spaced relation from package walls, or from other contents using pillow-like elements filled with cushioning material, e.g. elastic foam, fabric
• • 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
  • B65B25/00—Packaging other articles presenting special problems
• • 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
  • B65B29/00—Packaging of materials presenting special problems
• • 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
  • B65B5/00—Packaging individual articles in containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, jars
  • B65B5/06—Packaging groups of articles, the groups being treated as single articles
  • B65B5/067—Packaging groups of articles, the groups being treated as single articles in bags
• • 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
  • B65B55/00—Preserving, protecting or purifying packages or package contents in association with packaging
  • B65B55/20—Embedding contents in shock-absorbing media, e.g. plastic foam, granular material
• • 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
  • B65D19/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
• • 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
  • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
  • B65D75/38—Articles or materials enclosed in two or more wrappers disposed one inside the other
• • 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
• • 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
  • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
  • B65D81/02—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage
  • B65D81/05—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage maintaining contents at spaced relation from package walls, or from other contents
  • B65D81/127—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage maintaining contents at spaced relation from package walls, or from other contents using rigid or semi-rigid sheets of shock-absorbing material
• • 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
  • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
  • B65D81/18—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient
  • B65D81/20—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas
  • B65D81/2007—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas under vacuum
  • B65D81/2023—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas under vacuum in a flexible container

Definitions

• the invention relates to the packaging of polycrystalline silicon.
• Polycrystalline silicon (polysilicon) is predominantly deposited by means of the Siemens process from halosilanes such as trichlorosilane and then comminuted as little as possible in contamination into polycrystalline silicon fragments.
• the material should also be packed with low contamination before it is transported to the customer.
• the polysilicon fragments are packaged in single or multiple plastic bags. Usually the packaging is done in double bags.
• the bags are then placed in a bulk package, e.g. a cardboard box, and transported to the customer.
• a bulk package e.g. a cardboard box
• US 20100154357 A1 it is proposed to suck the air out of the bag during the closure until a vacuum of 10 to 700 mbar is produced.
• US 20120198793 A1 discloses sucking the air out of the bag before welding until a flat, air-poor bag is formed.
• US 20100154357 A1 provides an energy absorber within the plastic bag during packaging which is intended to prevent punctures.
• Ambient air are unacceptably contaminated.
• the inventors have recognized that the more freedom a vibration / vibration has, the more latitude a packaged polysilicon bag will have in a secondary packaging unit, such as e.g. has a carton. Too narrow a packaging leads to an increase in piercings, too loose packaging can also lead to piercings and significantly more fines.
• the invention therefore provides for a targeted reduction of the clearance (empty space) in the secondary packaging unit (cardboard), thereby avoiding or considerably reducing unwanted secondary shredding or puncturing of the packaging film.
• a targeted arrangement of the bags in the carton such as by the defined horizontal superimposing or by special deposits, it is possible to avoid the fines / penetration.
• the invention relates to a transport container containing at least two plastic bags, each containing polycrystalline silicon fragments, characterized by a packing density of greater than 500 kg / m 3 .
• the packing density is defined in the context of the invention as the weight of the weighing in on polycrystalline silicon fragments in relation to the internal volume of the transport container.
• the packing density is more than 650 kg / m 3 .
• Particularly preferred is a packing density of greater than 800 kg / m 3 .
• the packing density should not exceed 950 kg / m 3 .
• the invention also provides for securing a plurality of transport containers according to the invention on a pallet.
• the invention also relates to a method for transporting polycrystalline silicon fragments by means of a transport container according to the invention, wherein after completion of the transport, the penetration rate of the plastic bags is less than 20%.
• the puncture rate is less than 10%, more preferably less than 5%. Ideally, no punctures occur.
• Piercing is within the scope of the invention as a proportion of bags with at least one visually visible hole, i. a hole with a linear expansion greater than or equal to 0.3 mm, defined with respect to all bags in the transport container.
• the Si fines content formed during transport is ⁇ 100 ppmw, preferably ⁇ 50 ppmw. Ideally, no fines are produced.
• fine particles all fragments or particles of silicon which have a size such that they can be separated by means of a mesh screen with square meshes of a size of 8 mm ⁇ 8 mm are referred to as fine particles.
• the mesh size here is defined as 1 mm x 1 mm.
• special inserts such as e.g. Foam, cardboard inserts greater than 70%, particularly preferably filled to 100%.
• mold-forming elements made of PU, polyester or expandable polystyrene or another plastic are additionally introduced.
• the bags are arranged horizontally in the transport container. By this is meant that the filled bags rest with their longer side on the cardboard bottom. By contrast, a vertical arrangement would mean placing the filled bags in the carton.
• the bags may overlap in a horizontal arrangement, ie a bag may partially rest on another bag.
• the preferred horizontal arrangement of the bags in the carton is shown below with reference to FIG.
• Fig. 1 shows a carton with 8 filled bags.
• box 1 eight bags 3, each filled with polysilicon fragments 2, introduced. There are a total of four levels, each with two bags 3 available. In some cases, inserts 4 are introduced between the levels.
• the bags 3 are arranged horizontally, the elongated side of the bag 3 is approximately parallel to the plane of the cardboard bottom.
• Separating layers between the bags such as inner cartons, web sets or separating layers made of cardboard are preferred, but not mandatory for safe transport.
• 8 bags each containing 10 kg of polysilicon fragments may be placed horizontally in a transport container.
• the transport container is filled with 80 kg of polysilicon.
• the transport containers are preferably fastened on a pallet, particularly preferably lashed.
• a pallet particularly preferably lashed.
• 6 transport containers each with 80 kg of polysilicon can be mounted on a pallet.
• the transport container is preferably a bulk packaging such as a carton.
• a bulk packaging such as a carton.
• the total volume of a plastic bag in relation to the volume of the fragments 2.4 to 3.0.
• the plastic bag is a double bag comprising first and second plastic bags and polysilicon in the form of debris located in the first plastic bag, the first plastic bag being plugged into the second plastic bag, both plastic bags being closed
• Total volume of the double bag in relation to the volume of the fragments is 2.4 to 3.0.
• the total volume of the first bag relative to the volume of the fragments is 2.0 to 2.7.
• the first bag is dimensioned so that the plastic films fit snugly against the silicon fragments. As a result, relative movements between the fragments can be avoided.
• the plastic bags are preferably made of a high purity plastic. These are preferably polyethylene (PE) polyethylene terephthalate (PET) or polypropylene (PP) or composite films.
• PE polyethylene
• PET polyethylene terephthalate
• PP polypropylene
• a composite film is a multilayer packaging film from which flexible packaging is made. The individual film layers are usually extruded or laminated or laminated.
• the plastic bag preferably has a thickness of 10 to 1000 ⁇ , more preferably a thickness of 100 to 300 ⁇ .
• the closing of the plastic bag can be done for example by means of welding, gluing, sewing or positive locking. Preferably, it is done by welding.
• To determine the volume of the packaged bag it is immersed in a pool of water.
• the displaced water corresponds to the total volume of the bag.
• the volume of the silicon was determined by weighing the silicon with the constant density of hyperpure silicon (2.336 g / cm 3 ).
• the volume of silicon could also be determined by the dipping method.
• the air can be removed from a silicon-filled plastic bag by various methods: - manual pressing and subsequent welding
• the ambient conditions during packaging are preferably a temperature of 18-25 ° C.
• the relative humidity is preferably 30-70%.
• the packaging also takes place in the vicinity of filtered air.
• Transport simulation typical loads of transport vibrations on truck bed 800 km, transport lorries 2 to 6 g (gravitational acceleration), horizontal impacts when handling the loading unit and overseas transport.
• Table 1 shows an overview of the examined boxes.
• the poly fragments in PE double bags (290 ⁇ " ⁇ ) are arranged in the cardboard as follows:
• the total volume of each plastic double bag relative to the volume of fragments therein was in the range of 2.4 to 3.0.
• Table 2 shows packing density, fines and penetration for the fifth box tested. Per test run 960 kg were evaluated. The puncture rate refers to punctures of the outer bag. Table 2
• Test Run 1 702 0 0.00%
• Test Run 3 702 100 6.25%
• Table 3 shows packing density, fines and penetration for the five boxes tested. Per test run 960 kg were evaluated.
• the packing density is less than 500 kg / m 3 , more than 400 ppmw fines are generated during transportation and the throughput rate is greater than 25%, regardless of the bag arrangement in the container (horizontal / vertical).

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Packages (AREA)
• Buffer Packaging (AREA)
• Silicon Compounds (AREA)
• Wrappers (AREA)
• Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)

Applications Claiming Priority (2)

Publications (1)

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ID=51059439

Family Applications (1)

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• 2013
  • 2013-07-18 DE DE102013214099.1A patent/DE102013214099A1/de not_active Withdrawn
• 2014
  • 2014-06-19 TW TW103121156A patent/TWI508904B/zh active
  • 2014-06-26 CN CN201480040876.7A patent/CN105593120B/zh active Active
  • 2014-06-26 KR KR1020167004125A patent/KR102037570B1/ko active IP Right Grant
  • 2014-06-26 KR KR1020187019964A patent/KR20180082645A/ko not_active Application Discontinuation
  • 2014-06-26 CA CA2918118A patent/CA2918118C/en not_active Expired - Fee Related
  • 2014-06-26 MY MYPI2016000076A patent/MY172361A/en unknown
  • 2014-06-26 US US14/905,712 patent/US9981796B2/en active Active
  • 2014-06-26 JP JP2016526491A patent/JP6321161B2/ja active Active
  • 2014-06-26 EP EP14734445.1A patent/EP3022119A1/de not_active Withdrawn
  • 2014-06-26 WO PCT/EP2014/063481 patent/WO2015007490A1/de active Application Filing

Non-Patent Citations (2)

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