EP2743190B1 - Packing polycrystalline silicon - Google Patents

Packing polycrystalline silicon Download PDF

Info

Publication number
EP2743190B1
EP2743190B1 EP13195295.4A EP13195295A EP2743190B1 EP 2743190 B1 EP2743190 B1 EP 2743190B1 EP 13195295 A EP13195295 A EP 13195295A EP 2743190 B1 EP2743190 B1 EP 2743190B1
Authority
EP
European Patent Office
Prior art keywords
bag
plastic
chunks
plastic bag
double
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.)
Active
Application number
EP13195295.4A
Other languages
German (de)
French (fr)
Other versions
EP2743190A1 (en
Inventor
Matthias Vietz
Bruno Lichtenegger
Dr. Reiner Pech
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.)
Wacker Chemie AG
Original Assignee
Wacker Chemie AG
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 Wacker Chemie AG filed Critical Wacker Chemie AG
Publication of EP2743190A1 publication Critical patent/EP2743190A1/en
Application granted granted Critical
Publication of EP2743190B1 publication Critical patent/EP2743190B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • B65B1/00—Packaging fluent solid material, e.g. powders, granular or loose fibrous material, loose masses of small articles, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
    • 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
    • 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
    • B65D29/00—Sacks or like containers made of fabrics; Flexible containers of open-work, e.g. net-like construction
    • 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
    • B65B1/00—Packaging fluent solid material, e.g. powders, granular or loose fibrous material, loose masses of small articles, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
    • B65B1/28—Controlling escape of air or dust from containers or receptacles during filling
    • 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
    • B65B31/00—Packaging articles or materials under special atmospheric or gaseous conditions; Adding propellants to aerosol containers
    • B65B31/04—Evacuating, pressurising or gasifying filled containers or wrappers by means of nozzles through which air or other gas, e.g. an inert gas, is withdrawn or supplied
    • 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
    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/10—Applying or generating heat or pressure or combinations thereof
    • B65B51/14—Applying or generating heat or pressure or combinations thereof by reciprocating or oscillating members
    • B65B51/146—Closing bags

Definitions

  • the invention relates to a method for packaging 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.
  • Fragments protruding from the bag packaging can be contaminated unacceptably directly by surrounding materials, internal fragments by inflowing ambient air.
  • US2012 / 198793 A1 discloses, prior to welding to suck the air from the bag until a flat, air-poor bag is formed.
  • the object is achieved by a method for packing polysilicon in the form of fragments by filling the fragments in a first plastic bag, wherein the first plastic bag is introduced after filling the fragments in a second plastic bag or even before filling the fragments in the first Plastic bag, the first plastic bag is inserted into the second plastic bag, whereby the fragments are in a double bag, which is closed, characterized in that the after filling the fragments in the two plastic bags of the double bag located air before the Closing the double bag is removed so that the total volume of the first plastic bag in relation to the volume of the fragments is 2.0 to 2.7 and the total volume of the double bag in relation to the volume of the fragments 2.4 to 3.0.
  • each of the two plastic bags of the double bag is sealed separately after the removal of air by welding.
  • the first plastic bag After the filling of fragments in the first plastic bag, air is removed from the first plastic bag, the first plastic bag closed and introduced into the second plastic bag, so that the double bag is formed, and then removes air from the second plastic bag and this closed.
  • a double bag comprising a first and a second plastic bag and polysilicon in the form of fragments, which is located in the first plastic bag, wherein the first plastic bag is inserted into the second plastic bag, wherein both plastic bags are closed, the total volume of the first plastic bag in relation to the volume of the fragments is 2.0 to 2.7 and the total volume of the double bag in relation to the volume of the fragments is 2.4 to 3.0.
  • 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. It is 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 microns.
  • 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.
  • the packaged bag 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 (Vges).
  • 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.
  • Table 1 shows the ratio V ges / V Si and the qualitative results for piercing and fines production for non-evacuated packaging, according to a prior art package US2010 / 154357 A1 as well as two easy-packed bags.
  • Bag 1 was filled with 4-15 mm pieces.
  • Bag 2 was filled with fragments of size 45-120 mm.
  • Table 2 shows the ratio V ges / V Si and the qualitative results in terms of piercing and fines production for double bag packaging without air extraction, as well as two examples of the invention.
  • Table 2 shows the ratio V ges / V Si and the qualitative results in terms of piercing and fines production for double bag packaging without air extraction, as well as two examples of the invention.
  • V ges / V Si 2.0 to 2.7, preferably from 2.0 to 2.4.
  • V ges / V Si of 2.40 to 3.0 is essential.
  • the environmental 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.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Packages (AREA)
  • Silicon Compounds (AREA)
  • Vacuum Packaging (AREA)

Description

Die Erfindung betrifft ein Verfahren zur Verpackung von polykristallinem Silicium.The invention relates to a method for packaging polycrystalline silicon.

Polykristallines Silicium (Polysilicium) wird überwiegend mittels des Siemensverfahrens aus Halogensilanen wie Trichlorsilan abgeschieden und anschließend möglichst kontaminationsarm in polykristalline Siliciumbruchstücke zerkleinert.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.

Für Anwendungen in der Halbleiter- und Solarindustrie ist ein möglichst wenig kontaminierter Polysiliciumbruch erwünscht. Daher sollte das Material auch kontaminationsarm verpackt werden, bevor es zum Kunden transportiert wird.For applications in the semiconductor and solar industries, the least possible contaminated polysilicon fraction is desired. Therefore, the material should also be packed with low contamination before it is transported to the customer.

Üblicherweise wird Polysiliciumbruch in Kunststoffbeuteln verpackt.Usually polysilicon break is packed in plastic bags.

Bei Polysiliciumbruch handelt es sich um ein scharfkantiges, nicht rieselfähiges Schüttgut. Daher ist bei der Verpackung darauf zu achten, dass das Material die üblichen Kunststoffbeutel beim Befüllen nicht durchstößt oder im schlimmsten Fall sogar vollständig zerstört. Um dies zu vermeiden, werden im Stand der Technik verschiedene Maßnahmen vorgeschlagen. US2010/154357 A1 sieht beispielsweise einen Energieabsorber innerhalb des Kunststoffbeutels vor.Polysilicon breakage is a sharp-edged, non-free-flowing bulk material. Therefore, it must be ensured during packaging that the material does not puncture the usual plastic bags during filling, or even completely destroyed in the worst case. In order to avoid this, various measures are proposed in the prior art. US2010 / 154357 A1 for example, provides an energy absorber inside the plastic bag.

Solche Durchstoßungen des Beutels können jedoch nicht nur während der Verpackung, sondern auch beim Transport zum Kunden auftreten. Polysiliciumbruch ist scharfkantig, so dass bei ungünstiger Orientierung der Bruchstücke im Beutel durch Relativbewegung bzw. Druck der Bruchstücke zur bzw. auf die Beutelfolie diese durchschnitten bzw. durchstoßen werden.Such punctures of the bag, however, can occur not only during packaging but also during transport to the customer. Polysilicon is sharp-edged, so that when unfavorable orientation of the fragments in the bag by relative movement or pressure of the fragments to or on the bag film they are cut or pierced.

Aus der Beutelverpackung herausstehende Bruchstücke können direkt durch umgebende Materialien, innenliegende Bruchstücke durch einströmende Umgebungsluft inakzeptabel kontaminiert werden.Fragments protruding from the bag packaging can be contaminated unacceptably directly by surrounding materials, internal fragments by inflowing ambient air.

Zudem kommt es beim Transport von verpackten Siliciumbruchstücken zu unerwünschter Nachzerkleinerung.In addition, unwanted post-shredding occurs during transport of packaged silicon fragments.

Dies ist insbesondere deshalb unerwünscht, da der dabei entstehende Feinanteil nachweislich zu einer geringeren Prozessperformance bei den Kunden führt. Dies hat zur Folge, dass vor der Weiterverarbeitung beim Kunden der Feinanteil wieder abgesiebt werden muss, was nachteilig ist.This is undesirable, in particular, since the resulting fine fraction demonstrably leads to a lower process performance for the customer. This has the consequence that prior to further processing at the customer's fines must be screened again, which is disadvantageous.

Diese Problematik gilt gleichermaßen für gebrochenes und klassifiziertes, gereinigtes sowie ungereinigtes Silicium, unabhängig von der Größe der Verpackung (üblicherweise Beutel mit 5 oder 10 kg Polysilicium).This problem applies equally to broken and classified, purified and unrefined silicon, regardless of the size of the packaging (usually 5 or 10 kg polysilicon bags).

In US2010/154357 A1 wird vorgeschlagen, während des Verschließens die Luft aus dem Beutel abzusaugen, bis ein Vakuum von 10 bis 700 mbar entsteht.In US2010 / 154357 A1 It is proposed to suck the air out of the bag during closing until a vacuum of 10 to 700 mbar is produced.

US2012/198793 A1 offenbart, vor dem Verschweißen die Luft aus dem Beutel so lange abzusaugen, bis ein flacher, luftarmer Beutel entsteht. US2012 / 198793 A1 discloses, prior to welding to suck the air from the bag until a flat, air-poor bag is formed.

Diese Maßnahmen sind nicht geeignet, Durchstoßungen zu vermeiden.These measures are not suitable to avoid piercing.

Daraus ergab sich die Aufgabenstellung der Erfindung.This resulted in the task of the invention.

Die Aufgabe wird gelöst durch ein Verfahren zum Verpacken von Polysilicium in Form von Bruchstücken durch Einfüllen der Bruchstücke in einen ersten Kunststoffbeutel, wobei der erste Kunststoffbeutel nach dem Einfüllen der Bruchstücke in einen zweiten Kunststoffbeutel eingebracht wird oder wobei bereits vor dem Einfüllen der Bruchstücke in den ersten Kunststoffbeutel der erste Kunststoffbeutel in den zweiten Kunststoffbeutel gesteckt ist, wodurch sich die Bruchstücke in einem Doppelbeutel befinden, der verschlossen wird, dadurch gekennzeichnet, dass die nach dem Einfüllen der Bruchstücke in den beiden Kunststoffbeuteln des Doppelbeutels befindliche Luft vor dem Verschließen des Doppelbeutels derart entfernt wird, dass das Gesamtvolumen des ersten Kunststoffbeutels im Verhältnis zum Volumen der Bruchstücke 2,0 bis 2,7 beträgt und das Gesamtvolumen des Doppelbeutels im Verhältnis zum Volumen der Bruchstücke 2,4 bis 3,0 beträgt.The object is achieved by a method for packing polysilicon in the form of fragments by filling the fragments in a first plastic bag, wherein the first plastic bag is introduced after filling the fragments in a second plastic bag or even before filling the fragments in the first Plastic bag, the first plastic bag is inserted into the second plastic bag, whereby the fragments are in a double bag, which is closed, characterized in that the after filling the fragments in the two plastic bags of the double bag located air before the Closing the double bag is removed so that the total volume of the first plastic bag in relation to the volume of the fragments is 2.0 to 2.7 and the total volume of the double bag in relation to the volume of the fragments 2.4 to 3.0.

Vorzugsweise wird jeder der beiden Kunststoffbeutel des Doppelbeutels nach dem Entfernen von Luft separat durch Verschweißen verschlossen.Preferably, each of the two plastic bags of the double bag is sealed separately after the removal of air by welding.

Ebenso ist bevorzugt, die beiden Kunststoffbeutel des Doppelbeutels durch Verschweißen mittels einer gemeinsamen Schweißnaht zu verschließen.It is also preferred to close the two plastic bags of the double bag by welding by means of a common weld.

Vorzugsweise wird nach dem Einfüllen von Bruchstücken in den ersten Kunststoffbeutel Luft aus dem ersten Kunststoffbeutel entfernt, der erste Kunststoffbeutel verschlossen und in den zweiten Kunststoffbeutel eingebracht, so dass der Doppelbeutel entsteht, und anschließend Luft aus dem zweiten Kunststoffbeutel entfernt und dieser verschlossen.Preferably, after the filling of fragments in the first plastic bag, air is removed from the first plastic bag, the first plastic bag closed and introduced into the second plastic bag, so that the double bag is formed, and then removes air from the second plastic bag and this closed.

Die Aufgabe wird auch gelöst durch einen Doppelbeutel, umfassend einen ersten und einen zweiten Kunststoffbeutel und Polysilicium in Form von Bruchstücken, das sich im ersten Kunststoffbeutel befindet, wobei der erste Kunststoffbeutel in den zweiten Kunststoffbeutel gesteckt ist, wobei beide Kunststoffbeutel verschlossen sind, wobei das Gesamtvolumen des ersten Kunststoffbeutels im Verhältnis zum Volumen der Bruchstücke 2,0 bis 2,7 beträgt und das Gesamtvolumen des Doppelbeutels im Verhältnis zum Volumen der Bruchstücke 2,4 bis 3,0 beträgt.The object is also achieved by a double bag, comprising a first and a second plastic bag and polysilicon in the form of fragments, which is located in the first plastic bag, wherein the first plastic bag is inserted into the second plastic bag, wherein both plastic bags are closed, the total volume of the first plastic bag in relation to the volume of the fragments is 2.0 to 2.7 and the total volume of the double bag in relation to the volume of the fragments is 2.4 to 3.0.

Vorzugsweise ist der erste Beutel so dimensioniert, dass die Kunststofffolien an den Silicium-Bruchstücken eng anliegen. Dadurch können Relativbewegungen zwischen den Bruchstücken vermieden werden.Preferably, 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.

Die Kunststoffbeutel bestehen vorzugsweise aus einem hochreinen Kunststoff. Dabei handelt es sich bevorzugt um Polyethylen (PE), Polyethylenterephthalat (PET) oder Polypropylen (PP) oder um Verbundfolien. Eine Verbundfolie ist eine mehrschichtige Verpackungsfolie, aus der flexible Verpackungen gemacht werden. Die einzelnen Folienschichten werden üblicherweise extrudiert oder kaschiert bzw. laminiert.The plastic bags are preferably made of a high purity plastic. It is preferably polyethylene (PE), polyethylene terephthalate (PET) or polypropylene (PP) or composite films. 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.

Der Kunststoffbeutel weist vorzugsweise eine Dicke von 10 bis 1000 µm auf.The plastic bag preferably has a thickness of 10 to 1000 microns.

Das Verschließen der Kunststoffbeutel kann beispielsweise mittels Verschweißen, Verkleben, Vernähen oder Formschluss erfolgen. Vorzugsweise erfolgt es mittels Verschweißen.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.

Um das Volumen des verpackten Beutel zu bestimmen wird dieser in ein Wasserbecken getaucht.To determine the volume of the packaged bag, it is immersed in a pool of water.

Das verdrängte Wasser entspricht dabei dem Gesamtvolumen des Beutels (Vges).The displaced water corresponds to the total volume of the bag (Vges).

Über die Einwaage des Siliciums wurde mit der konstanten Dichte von Reinstsilicium (2,336 g/cm3) das Volumen des Silicums (Vsi) ermittelt.The volume of the silicon (Vsi) was determined by weighing the silicon with the constant density of hyperpure silicon (2.336 g / cm 3 ).

Alternativ könnte das Volumen des Siliciums ebenfalls über die Tauchmethode ermittelt werden.Alternatively, the volume of silicon could also be determined by the dipping method.

Tabelle 1 zeigt das Verhältnis Vges / VSi und die qualitativen Ergebnisse bzgl. Durchstoßungen und Feinanteilerzeugung für Verpackungen ohne Luftabsaugung, für eine Verpackung nach dem Stand der Technik gemäß US2010/154357 A1 sowie für zwei einfach verpackte Beutel.Table 1 shows the ratio V ges / V Si and the qualitative results for piercing and fines production for non-evacuated packaging, according to a prior art package US2010 / 154357 A1 as well as two easy-packed bags.

Durchstoßung der Verpackungsfolie und Entstehung von unerwünschtem Feinanteil wurden nach einer standardisierten Transportsimulation (LKW/Bahn/Schiff) ermittelt.Penetration of the packaging film and formation of unwanted fines were determined according to a standardized transport simulation (truck / rail / ship).

Beutel 1 war mit Bruchstücken der Größe 4-15 mm gefüllt.Bag 1 was filled with 4-15 mm pieces.

Beutel 2 war mit Bruchstücken der Größe 45-120 mm gefüllt.Bag 2 was filled with fragments of size 45-120 mm.

Die Größenklasse ist als längste Entfernung zweier Punkte auf der Oberfläche eines Siliciumbruchstücks (=max. Länge) definiert. Tabelle 1 Vges / VSi Durchstoßung Feinanteil Ohne Luftabsaugung >2,8 häufig viel US2010/154357 A1 <1, 8 häufig viel Beutel 1 2,18-2,31 nein nein Beutel 2 2,00-2,69 kaum nein The size class is defined as the longest distance between two points on the surface of a silicon fragment (= maximum length). <b> Table 1 </ b> V ges / V Si puncturing fines Without air extraction > 2.8 often much US2010 / 154357 A1 <1, 8 often much Bag 1 2.18 to 2.31 No No Bag 2 2.00 to 2.69 barely No

Beutel 1 und 2 wurden in einem weiteren Versuch in einen zweiten Beutel eingeschweißt (Doppelbeutel).Pouches 1 and 2 were sealed in a second test in a second bag (double bag).

Tabelle 2 zeigt das Verhältnis Vges / VSi und die qualitativen Ergebnisse bzgl. Durchstoßungen und Feinanteilerzeugung für Doppelbeutel-Verpackungen ohne Luftabsaugung, sowie für zwei erfindungsgemäße Beispiele. Tabelle 2 Vges / VSi Durchstoßung Feinanteil Ohne Luftabsaugung >3,4 häufig viel Beispiel 1 2,45-2,75 nein nein Beispiel 2 2,45-2,95 nein nein Table 2 shows the ratio V ges / V Si and the qualitative results in terms of piercing and fines production for double bag packaging without air extraction, as well as two examples of the invention. <b> Table 2 </ b> V ges / V Si puncturing fines Without air extraction > 3.4 often much example 1 2.45 to 2.75 No No Example 2 2.45 to 2.95 No No

Für den Primärbeutel gilt es, ein Verhältnis Vges / VSi von 2,0 bis 2,7, bevorzugt von 2,0 bis 2,4 zu erzeugen.For the primary bag, it is necessary to produce a ratio V ges / V Si of 2.0 to 2.7, preferably from 2.0 to 2.4.

Dadurch kann überraschender Weise eine feinanteil- u. durchstoßungsfreie Verpackung produziert werden.As a result, a finely divided u. piercing-free packaging are produced.

Für das in Innen- u. Außenbeutel verpackte Silicium ist Vges / VSi von 2,40 bis 3,0 wesentlich.For indoor and u. Outer bag-packed silicon is V ges / V Si of 2.40 to 3.0 is essential.

Die Luft kann mit diversen Verfahren aus einem mit Silicium gefüllten Kunststoffbeutel entfernt werden:

  • manuelles Drücken und anschließendem Verschweißen
  • Klemm- oder Stempelvorrichtung und anschließendem Verschweißen
  • Absaugvorrichtung u. anschließendem Verschweißen
  • Vakuumkammer u. anschließendem Verschweißen
The air can be removed from a silicon-filled plastic bag by various methods:
  • manual pressing and subsequent welding
  • Clamping or stamping device and subsequent welding
  • Suction device u. subsequent welding
  • Vacuum chamber u. subsequent welding

Die Umgebungsbedingungen beim Verpacken sind vorzugsweise eine Temperatur von 18-25 °C. Die relative Luftfeuchte beträgt vorzugsweise 30-70%.The environmental conditions during packaging are preferably a temperature of 18-25 ° C. The relative humidity is preferably 30-70%.

Es hat sich gezeigt, dass dadurch Kondenswasserbildung vermieden werden kann.It has been shown that this condensation can be avoided.

Vorzugsweise findet die Verpackung zudem in der Umgebung von gefilterter Luft statt.Preferably, the packaging also takes place in the vicinity of filtered air.

Claims (9)

  1. Method for packing polysilicon in the form of chunks by introducing the chunks into a first plastic bag, the first plastic bag being introduced into a second plastic bag after the introduction of the chunks, or the first plastic bag already having been inserted into the second plastic bag prior to the introduction of the chunks into the first plastic bag, as a result of which the chunks are present in a double bag which is sealed, characterized in that the air present in the two plastic bags in the double bag after the introduction of the chunks is removed before the sealing of the double bag such that the total volume of the first plastic bag relative to the volume of the chunks is 2.0 to 2.7 and the total volume of the double bag relative to the volume of the chunks is 2.4 to 3.0.
  2. Method according to Claim 1, wherein the dimensions of the first plastic bag are such that the plastic film that forms it fits close to the chunks.
  3. Method according to Claim 1 or according to Claim 2, wherein air is removed from the plastic bags by compressing the plastic bags by means of a clamp or ram device, by means of a suction device or by means of a vacuum chamber.
  4. Method according to any one of Claims 1 to 3, wherein a relative air humidity during the packing operation is 30-70%.
  5. Method according to any one of Claims 1 to 4, wherein each of the two plastic bags in the double bag is sealed separately by welding after the removal of air.
  6. Method according to any one of Claims 1 to 4, wherein the two plastic bags in the double bag are sealed by welding by means of a common weld seam.
  7. Method according to any one of Claims 1 to 5, wherein the introduction of chunks into the first plastic bag is followed by removal of air from the first plastic bag, by sealing of the first plastic bag and introduction into the second plastic bag, so as to give rise to the double bag, and then by removal of air from the second plastic bag and sealing thereof.
  8. Double bag comprising a first and a second plastic bag and polysilicon in the form of chunks present in the first plastic bag, wherein the first plastic bag has been inserted into the second plastic bag, wherein both plastic bags have been sealed, wherein the total volume of the first bag relative to the volume of the chunks is 2.0 to 2.7 and the total volume of the double bag relative to the volume of the chunks is 2.4 to 3.0.
  9. Double bag according to Claim 8, wherein the first and the second plastic bag are sealed by welding and have a common weld seam.
EP13195295.4A 2012-12-14 2013-12-02 Packing polycrystalline silicon Active EP2743190B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102012223192.7A DE102012223192A1 (en) 2012-12-14 2012-12-14 Packaging of polycrystalline silicon

Publications (2)

Publication Number Publication Date
EP2743190A1 EP2743190A1 (en) 2014-06-18
EP2743190B1 true EP2743190B1 (en) 2015-12-02

Family

ID=49724995

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13195295.4A Active EP2743190B1 (en) 2012-12-14 2013-12-02 Packing polycrystalline silicon

Country Status (10)

Country Link
US (1) US9550607B2 (en)
EP (1) EP2743190B1 (en)
JP (1) JP5726984B2 (en)
KR (1) KR101575933B1 (en)
CN (1) CN103863586B (en)
CA (1) CA2836208C (en)
DE (1) DE102012223192A1 (en)
ES (1) ES2562018T3 (en)
MY (1) MY171014A (en)
TW (1) TWI548567B (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012220422A1 (en) * 2012-11-09 2014-05-15 Wacker Chemie Ag Packaging of polycrystalline silicon
US10518964B2 (en) * 2014-09-26 2019-12-31 Tokuyama Corporation Polysilicon package
DE102015207466A1 (en) * 2015-04-23 2016-10-27 Wacker Chemie Ag Packaging of polysilicon
JP6472732B2 (en) 2015-09-15 2019-02-20 信越化学工業株式会社 Resin material, plastic bag, polycrystalline silicon rod, polycrystalline silicon lump
CN109094861A (en) * 2017-06-21 2018-12-28 新特能源股份有限公司 A kind of packing method of chunk polysilicon
CN110015453B (en) * 2018-01-08 2021-08-20 新特能源股份有限公司 Packaging method of finished polycrystalline silicon rod
CN111989267B (en) * 2018-04-18 2022-06-03 三菱综合材料株式会社 Method for packaging polycrystalline silicon, method for double-packaging polycrystalline silicon, and method for producing raw material for single-crystal silicon
KR102138122B1 (en) * 2019-01-09 2020-07-27 에스케이실트론 주식회사 Wafer cassette packing apparatus
EP3901089A4 (en) * 2019-01-25 2022-09-28 Tokuyama Corporation Polycrystalline silicon lump, packaging body thereof, and method for producing same
US20230193133A1 (en) 2020-06-09 2023-06-22 Tokuyama Corporation Polysilicon fracture object and production method therefor
WO2022199813A1 (en) 2021-03-24 2022-09-29 Wacker Chemie Ag Transport container for silicon fragments
CN113291530B (en) * 2021-06-25 2023-06-09 西安奕斯伟硅片技术有限公司 Vacuum packaging equipment and method for silicon wafer

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8500076A (en) * 1985-01-14 1986-08-01 Leer Koninklijke Emballage PACKAGING FILLED WITH A WATER-SOLUBLE TOXIC POWDER OR GRAIN PRODUCT.
US4964259A (en) * 1989-08-02 1990-10-23 Borden, Inc. Form-fill-seal deflation method and apparatus
JP3555309B2 (en) * 1996-02-27 2004-08-18 信越半導体株式会社 Automatic metering and feeding device for granular materials
DE10204176A1 (en) * 2002-02-01 2003-08-14 Wacker Chemie Gmbh Device and method for the automatic, low-contamination packaging of broken polysilicon
DE102005024584A1 (en) * 2005-05-25 2006-11-30 Lang, Robert Evacuable container and procedure for its evacuation
DE102007027110A1 (en) * 2007-06-13 2008-12-18 Wacker Chemie Ag Method and apparatus for packaging polycrystalline silicon breakage
KR101538167B1 (en) * 2007-08-27 2015-07-20 미츠비시 마테리알 가부시키가이샤 Method of packing silicon and packing body
GB2475720A (en) * 2009-11-27 2011-06-01 Ashwell Packaging Supplies Ltd Inner pack suspended within pressurized outer pack
DE102011003875A1 (en) * 2011-02-09 2012-08-09 Wacker Chemie Ag Method and device for dosing and packaging polysilicon fragments as well as dosing and packaging unit

Also Published As

Publication number Publication date
DE102012223192A1 (en) 2014-06-18
EP2743190A1 (en) 2014-06-18
JP2014122153A (en) 2014-07-03
MY171014A (en) 2019-09-23
CA2836208A1 (en) 2014-06-14
TWI548567B (en) 2016-09-11
US20140165503A1 (en) 2014-06-19
TW201422490A (en) 2014-06-16
CN103863586A (en) 2014-06-18
US9550607B2 (en) 2017-01-24
KR101575933B1 (en) 2015-12-08
ES2562018T3 (en) 2016-03-02
CA2836208C (en) 2015-06-23
KR20140077822A (en) 2014-06-24
JP5726984B2 (en) 2015-06-03
CN103863586B (en) 2016-03-23

Similar Documents

Publication Publication Date Title
EP2743190B1 (en) Packing polycrystalline silicon
EP1855945B1 (en) Device for producing deep packaging trays comprising a cooled lower mould section
EP2110320B1 (en) Method and device for packaging a bulk good in bags
EP2671819B1 (en) Packing of polycrystalline silicon and method for this packaging
DE102012222249A1 (en) Packaging of polysilicon
WO2008151978A1 (en) Method and device for packaging polycrystalline bulk silicon
EP3022119A1 (en) Packaging of polycrystalline silicon
DE102012208473A1 (en) Polycrystalline silicon
DE112005002793T5 (en) Laminate for packaging and packaging bags and a bag for packaging an electronic product, each containing the same
DE102017126615A1 (en) Packaging machine with protective cover thereon arranged Tokenbefestigungskapsel and method
DE2456609A1 (en) PACKAGING WITH A PROTECTIVE STRIP
CH617897A5 (en)
BE1024772A1 (en) Method of making a packaged filter tow bale
DE112022001399T5 (en) Packaging bags for filling crushed polysilicon material and polysilicon packaging
EP2418150A1 (en) Method for packaging, deep draw packaging machine and packaging
EP3436267B1 (en) Multilayer sealing film, and film laminate with multilayer sealing film
DE69725540T2 (en) Device for the production of composite bodies
DE102011004173A1 (en) Thermoformed bag packaging, process for making same and packaging semi-finished product
DE102006022094B3 (en) Semiconductor wafer packing and transporting method, involves shrink wrapping shipping box such that volume difference between packing bag and box corresponds to air pressure difference between two positions
EP3071484A1 (en) Process for producing polycrystalline silicon
DE1486954C3 (en) Method and device for the production of deep-drawn containers provided with a carrier made of rigid material
DE102005017945A1 (en) First aid kit to be stored in vehicle, comprising plastic cover with vacuum created inside for size reduction
DE2402977A1 (en) Skin package obtd. from a buried base and a covering foil - by placing an article to be packaged between foil and base, evacuating and sealing
DE102020201284A1 (en) Thermoforming packaging machine with vacuum cooling station and process for vacuum cooling of hot-packed products
DE2028693A1 (en) Stand-up pouches made of plastic composite films or the like, as well as the method and device for its production

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20131202

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

INTG Intention to grant announced

Effective date: 20150708

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 763485

Country of ref document: AT

Kind code of ref document: T

Effective date: 20151215

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 3

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502013001551

Country of ref document: DE

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2562018

Country of ref document: ES

Kind code of ref document: T3

Effective date: 20160302

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20160302

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

REG Reference to a national code

Ref country code: NO

Ref legal event code: T2

Effective date: 20151202

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20151202

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160303

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20151202

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20151202

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20151202

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20151202

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20151231

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20151202

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20151202

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20151202

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20151202

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20151202

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160404

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20151202

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20151202

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160402

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20151202

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502013001551

Country of ref document: DE

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20151202

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20151202

26N No opposition filed

Effective date: 20160905

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20151202

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 4

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20131202

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20151202

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20151202

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20151202

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20151202

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20151202

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20161231

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20161231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20151202

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 5

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20151202

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20171202

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20151202

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20151202

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20171202

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 763485

Country of ref document: AT

Kind code of ref document: T

Effective date: 20181202

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20191230

Year of fee payment: 7

Ref country code: FR

Payment date: 20191220

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20181202

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20200121

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20201202

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20201231

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20220207

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20201203

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230502

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NO

Payment date: 20231222

Year of fee payment: 11

Ref country code: DE

Payment date: 20231214

Year of fee payment: 11

REG Reference to a national code

Ref country code: DE

Ref legal event code: R081

Ref document number: 502013001551

Country of ref document: DE

Owner name: WACKER CHEMIE AG, DE

Free format text: FORMER OWNER: WACKER CHEMIE AG, 81737 MUENCHEN, DE