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WO2000063669A1 - Dust tester - Google Patents

Dust tester Download PDF

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Publication number
WO2000063669A1
WO2000063669A1 PCT/KR2000/000351 KR0000351W WO0063669A1 WO 2000063669 A1 WO2000063669 A1 WO 2000063669A1 KR 0000351 W KR0000351 W KR 0000351W WO 0063669 A1 WO0063669 A1 WO 0063669A1
Authority
WO
WIPO (PCT)
Prior art keywords
dust
carton
filter
tester
suction
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.)
Ceased
Application number
PCT/KR2000/000351
Other languages
French (fr)
Inventor
Chan Kyu Ahn
Eun Seok Yeom
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.)
Yuhan Kimberly Ltd
Original Assignee
Yuhan Kimberly Ltd
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 Yuhan Kimberly Ltd filed Critical Yuhan Kimberly Ltd
Priority to AU41486/00A priority Critical patent/AU4148600A/en
Publication of WO2000063669A1 publication Critical patent/WO2000063669A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/22—Devices for withdrawing samples in the gaseous state
    • G01N1/2226—Sampling from a closed space, e.g. food package, head space
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/22—Devices for withdrawing samples in the gaseous state
    • G01N1/2202—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
    • G01N15/06—Investigating concentration of particle suspensions
    • G01N15/0606—Investigating concentration of particle suspensions by collecting particles on a support
    • G01N15/0618—Investigating concentration of particle suspensions by collecting particles on a support of the filter type
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/22—Devices for withdrawing samples in the gaseous state
    • G01N1/2202—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling
    • G01N2001/222—Other features
    • G01N2001/2223—Other features aerosol sampling devices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/22—Devices for withdrawing samples in the gaseous state
    • G01N1/2226—Sampling from a closed space, e.g. food package, head space
    • G01N2001/2241—Sampling from a closed space, e.g. food package, head space purpose-built sampling enclosure for emissions

Definitions

  • the invention relates to a dust tester for measuring the dust content which is generated when tissue sheets are pulled up from a carton.
  • a dust tester for measuring the dust content which is generated when tissue sheets are pulled up from a carton.
  • the dust which is generated when tissue sheets are pulled up is one of the greatest cause for dissatisfaction to the consumer.
  • the reduction of such dust has become an important issue for tissue manufacturers.
  • the dust content which is generated when the tissue sheets are pulled up must first be accurately measured.
  • a measuring vessel called a "Plexiglas Box” was used to measure dust content.
  • plexiglass box 100 is in the form of rectangular hexahedron, with the material of the plexiglass box being composed of transparent aryl.
  • a rectangular aperture 101 is formed on one side of Plexiglas Box 100.
  • the carton is inserted into Plexiglas Box 100 through a rectangular aperture 101, and then the tissue sheets are pulled up one by one within Plexiglas Box 100.
  • the dust which is generated during the above testing accumulates on the wall of Plexiglas Box 100.
  • the dust also accumulates on the carton itself.
  • the dust accumulated on the carton are shaken off, with the window of the carton being downwardly directed.
  • the operator gathers the dust accumulated on Plexiglas Box 100 using metal ruler 110 and places the dust on weight measurement paper, and then measures the gathered dust with a balance.
  • the present invention solves the above problems, and it is an object of the present invention to provide an dust tester which can easily and accurately measure the dust content which is generated when tissue sheets are pulled up from a carton.
  • the dust tester of the present invention for use in measuring the dust content which is generated when tissue sheets are pulled up from a carton comprising: a suction means for forcibly suctioning air containing the dust generated from the carton; and a filtering means for filtering the dust contained in the air suctioned by said suction means.
  • FIG. 1 is a front sectional view of the dust tester according to the present invention.
  • FIG. 2 is a side view of the dust tester of Fig. 1.
  • FIG. 3 is an enlarged sectional view of a carton holder and a carton holder support of the dust tester according to the present invention.
  • FIG. 4 is a side view of the dust tester showing the adjusted height of the carton.
  • FIG. 5a is a plan view of the filter device of the dust tester according to the present invention.
  • FIG. 5b is a sectional view of Fig. 5a.
  • FIG. 6a is a plan view of a filter cartridge.
  • FIG. 6b is a sectional view of the filter cartridge.
  • FIG. 7 is a sectional view of the filter.
  • FIG. 8 is a dust measuring vessel of the prior art.
  • Fig. 1 shows dust tester 1 according to the present invention and flowing direction A of ambient air caused by dust tester 1.
  • Dust tester 1 includes a main body 10 and a suction fan 30 as suction means, and a filtering device 20 as filtering means.
  • the main body 10 consists of an upper duct 11 and a lower duct 14 as will be described below, and is installed on a fixing stand 40. If suction fan 30 is energized, the fan is rotated. The suction force generated by such rotating force serves to forcibly convect the ambient air through main body 10 and filtering device 20 from the upstream side to the downstream side of the dust tester.
  • the dust which is generated when tissue sheets are pulled up from a carton 60 retained in a carton holder 50 pass through main body 10 and filtering device 20 by forcible convection. Since filtering device 20 has a fine filter 22 (Fig. 5), device 20 is constructed so that only the air is discharged and the dust remains, thereby enabling the measurement of the amount of paper dust. Although not shown in the drawings, it should be understood that the space utilized for measuring the dust content should be a clean room free of any contamination.
  • Fig. 1 is a front sectional view of the dust tester according to the present invention
  • Fig. 2 is a side view of the dust tester of Fig. 1.
  • Main body 10 consists of upper duct 11 and lower duct 14, with filtering device 20 being installed across the main body between the upper and lower ducts.
  • Upper duct 11 is installed at the upstream side of filtering device 20, so as to suck the upstream air of dust tester 1.
  • Upper duct 11 includes an intake opening 12, through which the ambient air is suctioned, a dust suction opening 13, which is formed by projecting a middle portion of one side of upper duct 11 to be opposite to carton 60 retained in carton holder 50, and mounting opening 16 of the filtering device. Most of the dust which is generated when tissue sheets are pulled up from carton 60 are suctioned into upper duct 11 through dust suction opening 13. The remainder of the un-suctioned dust is suctioned into intake opening 12 through forcible convection by suction fan 30.
  • Lower duct 14 is connected to the downstream side of filtering device 20. Lower duct 14 also includes mounting opening 16 of the filtering device, an air discharging opening 15 at the lower portion thereof, and a suction fan 30 at the center thereof.
  • Fixing stand 40 is supported on the floor surface by four legs 41 provided at the four corners thereof.
  • Carton 60 is supported by carton holder 50.
  • Carton holder 50 is supported so that its height can be adjusted by carton holder support 70, which is fixed on one side of the fixing stand.
  • Carton holder 50 and carton holder support 70 will be described in detail with reference to Figs. 3 and 4.
  • Fig. 3 is an enlarged sectional view of a carton holder and a carton holder support of the dust tester according to the present invention.
  • Carton holder 50 comprises a holder base 51 on which carton 60 is placed, a side holder plate 52 connected perpendicularly at one end of holder base 51, a carton side supporting plate 53 fixed by bolts on the opposite sides of holder base 51, and a carton back supporting plate 54 connected by bolts at the other end of holder base 51.
  • Carton holder 50 supports the carton opposite to dust suction opening 13 so that the paper dust generated by pulling up the tissue sheets from the carton can be suctioned through dust suction opening 13. Since carton side supporting plate 53 and carton back supporting plate 54 are made of an elastic material, the carton supporting plates will become slightly diverged when carton 60 is inserted into carton holder 50 and can elastically surround the carton after its insertion.
  • Carton holder support 70 comprises two longitudinal shafts 71, shaft supports 72 provided on the opposite ends of shafts 71, a support 73 supporting shaft supports 72, and a fixing plate 74 fixed movably up and down along shafts 71 by bolts.
  • compression springs 75 and seats 76 are provided on the lower part of shaft 71. Since side holder plate 52 is fixed on fixing plate 74 of carton holder support 70 by bolts, carton holder 50 will be displaced along with the movement of fixing plate 74. As shown in Fig. 4, fixing plate 74 can be moved by releasing fixing bolts 81 and then fixing the fixing plate at a desired position.
  • a cartridge type filter device 20 according to the present invention will be described hereinafter in more detail with reference to the Figs. 5 to 7.
  • Mounting opening 16 for receiving filtering device 20 is provided between upper duct 11 and lower duct 12.
  • Filtering device 20 comprises a filter box 25 as a cartridge holder, a filter cartridge 21 which is detachably mounted in filter box 25, a filter 22 which is fixed in filter cartridge 21, and filter fixing means 24 for fixing the filter 22.
  • Filter box 25 is a square shaped double layered assembly comprised of upper and lower layers bolted with a plurality of bolts. One side of the box is not bolted, so that filter cartridge 21 can be inserted or moved away between the two layers of the assembly.
  • Filter 22 is inserted into filter box 25 after being fixed onto filter cartridge 21 together with filter base 23 and filter fixing means 24. After the desired number of tissue sheets are pulled up, filter cartridge 21 will be removed from filter box 25 and the dust content filtered by filter 22 is measured.
  • the preferred mesh of the filter is 150 to 300.
  • the filter cartridge and filter are shown in detail in Figs. 6 and 7.
  • filter device 20 is mounted across main body 10 and suction fan 30 is provided on the lower side of lower duct 14.
  • any type of mounting strucmre for the filtering device can be allowed, insofar as the filtering device is provided between the upstream side and the downstream side of the air flow in the main body.
  • the suction fan can also be mounted at an arbitrary position of the downstream side on the main body.
  • the procedure for measuring the dust content is as follows:
  • A initial weight of filter (g)
  • B last weight of filter (g)
  • C number of sheet counts per carton tested.
  • K factor of number of sheet counts (to be 300) (all data should be convert into 300 sheet counts)

Landscapes

  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biochemistry (AREA)
  • Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Dispersion Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Molecular Biology (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

The invention relates to a dust tester for measuring the dust content which is generated when tissue sheets are pulled up from a carton comprising a suction means for forcibly suctioning air containing the dust generated from the carton and a filtering means for filtering the dust of the air suctioned by said suction means.

Description

DUST TESTER
BACKGROUND OF THE INVENTION
Field of the Invention
The invention relates to a dust tester for measuring the dust content which is generated when tissue sheets are pulled up from a carton. Description of the Prior Art In carton-type high grade tissue products, the dust which is generated when tissue sheets are pulled up is one of the greatest cause for dissatisfaction to the consumer. Thus, the reduction of such dust has become an important issue for tissue manufacturers. However, in order to reduce dust, the dust content which is generated when the tissue sheets are pulled up must first be accurately measured. In the prior art, a measuring vessel called a "Plexiglas Box" was used to measure dust content. As shown in Fig. 8, plexiglass box 100 is in the form of rectangular hexahedron, with the material of the plexiglass box being composed of transparent aryl. A rectangular aperture 101 is formed on one side of Plexiglas Box 100. To measure the dust content by using the prior art measuring vessel, the carton is inserted into Plexiglas Box 100 through a rectangular aperture 101, and then the tissue sheets are pulled up one by one within Plexiglas Box 100. The dust which is generated during the above testing accumulates on the wall of Plexiglas Box 100. The dust also accumulates on the carton itself. The dust accumulated on the carton are shaken off, with the window of the carton being downwardly directed. The operator gathers the dust accumulated on Plexiglas Box 100 using metal ruler 110 and places the dust on weight measurement paper, and then measures the gathered dust with a balance.
With the above prior art measurement vessel, dust could leak through aperture 101 during measurement. Further, a portion of the dust could also remain in the carton, despite careful shaking off of the dust accumulated in the carton. Thus, an accurate measurement of the dust content was not possible. Furthermore, an additional problem existed in that the operation of scraping out the dust accumulated on the inner wall of Plexiglas Box 100 was difficult.
SUMMARY OF THE INVENTION The present invention solves the above problems, and it is an object of the present invention to provide an dust tester which can easily and accurately measure the dust content which is generated when tissue sheets are pulled up from a carton. The dust tester of the present invention for use in measuring the dust content which is generated when tissue sheets are pulled up from a carton comprising: a suction means for forcibly suctioning air containing the dust generated from the carton; and a filtering means for filtering the dust contained in the air suctioned by said suction means.
The invention can be better understood by referring to a preferred embodiment of the invention described below in detail with reference to the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a front sectional view of the dust tester according to the present invention.
FIG. 2 is a side view of the dust tester of Fig. 1. FIG. 3 is an enlarged sectional view of a carton holder and a carton holder support of the dust tester according to the present invention.
FIG. 4 is a side view of the dust tester showing the adjusted height of the carton.
FIG. 5a is a plan view of the filter device of the dust tester according to the present invention.
FIG. 5b is a sectional view of Fig. 5a. FIG. 6a is a plan view of a filter cartridge. FIG. 6b is a sectional view of the filter cartridge. FIG. 7 is a sectional view of the filter. FIG. 8 is a dust measuring vessel of the prior art.
DETAILED DESCRIPTION OF THE INVENTION
Fig. 1 shows dust tester 1 according to the present invention and flowing direction A of ambient air caused by dust tester 1. Dust tester 1 includes a main body 10 and a suction fan 30 as suction means, and a filtering device 20 as filtering means. The main body 10 consists of an upper duct 11 and a lower duct 14 as will be described below, and is installed on a fixing stand 40. If suction fan 30 is energized, the fan is rotated. The suction force generated by such rotating force serves to forcibly convect the ambient air through main body 10 and filtering device 20 from the upstream side to the downstream side of the dust tester. The dust which is generated when tissue sheets are pulled up from a carton 60 retained in a carton holder 50 pass through main body 10 and filtering device 20 by forcible convection. Since filtering device 20 has a fine filter 22 (Fig. 5), device 20 is constructed so that only the air is discharged and the dust remains, thereby enabling the measurement of the amount of paper dust. Although not shown in the drawings, it should be understood that the space utilized for measuring the dust content should be a clean room free of any contamination.
The dust tester according to the present invention is described in detail with reference to Figs. 1 and 2. Fig. 1 is a front sectional view of the dust tester according to the present invention and Fig. 2 is a side view of the dust tester of Fig. 1. Main body 10 consists of upper duct 11 and lower duct 14, with filtering device 20 being installed across the main body between the upper and lower ducts. Upper duct 11 is installed at the upstream side of filtering device 20, so as to suck the upstream air of dust tester 1. Upper duct 11 includes an intake opening 12, through which the ambient air is suctioned, a dust suction opening 13, which is formed by projecting a middle portion of one side of upper duct 11 to be opposite to carton 60 retained in carton holder 50, and mounting opening 16 of the filtering device. Most of the dust which is generated when tissue sheets are pulled up from carton 60 are suctioned into upper duct 11 through dust suction opening 13. The remainder of the un-suctioned dust is suctioned into intake opening 12 through forcible convection by suction fan 30. Lower duct 14 is connected to the downstream side of filtering device 20. Lower duct 14 also includes mounting opening 16 of the filtering device, an air discharging opening 15 at the lower portion thereof, and a suction fan 30 at the center thereof. Fixing stand 40 is supported on the floor surface by four legs 41 provided at the four corners thereof.
Carton 60 is supported by carton holder 50. Carton holder 50 is supported so that its height can be adjusted by carton holder support 70, which is fixed on one side of the fixing stand. Carton holder 50 and carton holder support 70 will be described in detail with reference to Figs. 3 and 4. Fig. 3 is an enlarged sectional view of a carton holder and a carton holder support of the dust tester according to the present invention. Carton holder 50 comprises a holder base 51 on which carton 60 is placed, a side holder plate 52 connected perpendicularly at one end of holder base 51, a carton side supporting plate 53 fixed by bolts on the opposite sides of holder base 51, and a carton back supporting plate 54 connected by bolts at the other end of holder base 51. Carton holder 50 supports the carton opposite to dust suction opening 13 so that the paper dust generated by pulling up the tissue sheets from the carton can be suctioned through dust suction opening 13. Since carton side supporting plate 53 and carton back supporting plate 54 are made of an elastic material, the carton supporting plates will become slightly diverged when carton 60 is inserted into carton holder 50 and can elastically surround the carton after its insertion.
Carton holder support 70 comprises two longitudinal shafts 71, shaft supports 72 provided on the opposite ends of shafts 71, a support 73 supporting shaft supports 72, and a fixing plate 74 fixed movably up and down along shafts 71 by bolts. On the lower part of shaft 71, compression springs 75 and seats 76 are provided. Since side holder plate 52 is fixed on fixing plate 74 of carton holder support 70 by bolts, carton holder 50 will be displaced along with the movement of fixing plate 74. As shown in Fig. 4, fixing plate 74 can be moved by releasing fixing bolts 81 and then fixing the fixing plate at a desired position.
A cartridge type filter device 20 according to the present invention will be described hereinafter in more detail with reference to the Figs. 5 to 7. Mounting opening 16 for receiving filtering device 20 is provided between upper duct 11 and lower duct 12. Filtering device 20 comprises a filter box 25 as a cartridge holder, a filter cartridge 21 which is detachably mounted in filter box 25, a filter 22 which is fixed in filter cartridge 21, and filter fixing means 24 for fixing the filter 22. Filter box 25 is a square shaped double layered assembly comprised of upper and lower layers bolted with a plurality of bolts. One side of the box is not bolted, so that filter cartridge 21 can be inserted or moved away between the two layers of the assembly.
Filter 22 is inserted into filter box 25 after being fixed onto filter cartridge 21 together with filter base 23 and filter fixing means 24. After the desired number of tissue sheets are pulled up, filter cartridge 21 will be removed from filter box 25 and the dust content filtered by filter 22 is measured. The preferred mesh of the filter is 150 to 300. The filter cartridge and filter are shown in detail in Figs. 6 and 7. In this embodiment, filter device 20 is mounted across main body 10 and suction fan 30 is provided on the lower side of lower duct 14. In the present invention, any type of mounting strucmre for the filtering device can be allowed, insofar as the filtering device is provided between the upstream side and the downstream side of the air flow in the main body. The suction fan can also be mounted at an arbitrary position of the downstream side on the main body.
The procedure for measuring the dust content is as follows:
- prepare an accurate balance adapted to measure up to 0.0001 g.
- weigh initial weight of the filter before testing and record the weight in units of 0.0001 g.
- switch on the dust tester and confirm that air convection is established within the main body of the dust tester.
- open the carton and place it into the carton holder of the dust tester.
- fix the filter to the filter cartridge and insert the cartridge to the filter box. - pull the tissue sheets straight up one by one from the carton at intervals of
0.5 seconds.
- after the above tissue-pulling step is completed, wait 30 seconds (so that dust would settle down on the filter completely).
- remove the filter cartridge from the filter box and separate the filter. - weigh the separated filter and record this weight in units of O.OOOlg .
- remove the dust from the filter.
- For additional testing, repeat the above procedure.
The formula for the calculation of paper dust is as follows
- dust content per one sheet (mg) = ((B-A)/C) x 1000 - total dust content (mg) = dust content per one sheet (mg) x K
A: initial weight of filter (g) B: last weight of filter (g) C: number of sheet counts per carton tested. K: factor of number of sheet counts (to be 300) (all data should be convert into 300 sheet counts)
Through the above paper dust measuring device, accurate and easy measurement of the paper dust generated when pulling out tissues from a carton can be made.

Claims

WHAT IS CLAIMED IS:
1. A dust tester for use in measuring the dust content which is generated when tissue sheets are pulled up from a carton comprising: a suction means for forcibly suctioning air containing the dust generated from the carton; and a filtering means for filtering the dust of the air suctioned by said suction means.
2. The dust tester of claim 1, wherein said suction means comprises an upper duct installed on the upstream side of said filtering means and having an intake opening through which ambient air is suctioned, a dust suction opening and a mounting opening of said filtering means; a lower duct connected to the downstream side of said filtering means and having a coupling opening of said filtering means and an air discharging opening; and a suction fan installed on the air discharging opening side of said lower duct.
3. The dust tester of claim 1, wherein said filtering means comprises a filter box, a filter cartridge detachably mounted in said filter box, a filter fixed to said filter cartridge, and a filter fixing means for fixing said filter to said filter cartridge.
4. The dust tester of claim 3, wherein the mesh of said filter is 150 to 300.
5. The dust tester of claim 1, further comprising a carton holder for supporting a carton oppositely to said dust suction opening for suctioning dust so that the dust which is generated when tissue sheets are pulled up from the carton is suctioned into said dust suction opening of said upper duct.
6. The dust tester of claim 5, wherein said carton holder is supported so that its height can be adjusted by a carton holder support.
PCT/KR2000/000351 1999-04-16 2000-04-15 Dust tester Ceased WO2000063669A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU41486/00A AU4148600A (en) 1999-04-16 2000-04-15 Dust tester

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1999/13645 1999-04-16
KR1019990013645A KR100357407B1 (en) 1999-04-16 1999-04-16 Dust tester

Publications (1)

Publication Number Publication Date
WO2000063669A1 true WO2000063669A1 (en) 2000-10-26

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KR (1) KR100357407B1 (en)
AU (1) AU4148600A (en)
WO (1) WO2000063669A1 (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002099391A3 (en) * 2001-06-05 2003-12-11 Paper Testing Instr Gmbh Particle probe
DE102006018347A1 (en) * 2006-04-19 2007-10-25 Schwechten, Dieter, Dr. Device for collecting dust which can be inhaled for analyzing purposes comprises a filter with a housing integrated into a unit for collecting the dust
US7325699B2 (en) 2004-12-17 2008-02-05 Kimberly-Clark Worldwide, Inc. Lint-reducing container
WO2009138566A1 (en) * 2008-05-14 2009-11-19 Metso Automation Oy Method and equipment for determining dust formation of moving web-like material
WO2010148217A1 (en) * 2009-06-17 2010-12-23 Smiths Detection - Toronto Ltd. Particle collection device
EP2315023A1 (en) 2009-10-21 2011-04-27 Mondi Uncoated Fine & Kraft Paper GmbH Process for quantitative determination of emissions, consisting of particulate matter, from surfaces of flexible sheet-like materials and device therefore
CN104266670A (en) * 2014-10-21 2015-01-07 南京际华三五二一特种装备有限公司 Simple dust resistance test box
CN107165847A (en) * 2016-05-24 2017-09-15 九阳股份有限公司 A kind of lampblack absorber detection blower fan control method
CN118500998A (en) * 2024-05-22 2024-08-16 江苏耀群工业技术有限公司 A surface dust particle analyzer

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102807038B1 (en) * 2022-09-14 2025-05-14 주식회사 승원 Water filter performance test device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU629502A1 (en) * 1977-01-28 1978-10-25 Украинский научно-исследовательский институт целлюлозно-бумажной промышленности Device for determining paper dust-generating properties
SU1652908A1 (en) * 1988-10-05 1991-05-30 Tsnii Bumagi Device for determining dust-generating properties of paper

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01134287A (en) * 1987-11-20 1989-05-26 Kagaku Gijutsucho Hoshasen Igaku Sogo Kenkyusho Portable dust monitor
EP0390942B1 (en) * 1989-04-01 1993-02-03 FAG KUGELFISCHER GEORG SCHÄFER Kommanditgesellschaft auf Aktien Device for measuring the dust emission in ducts carrying hazardous dust, particularly chimneys

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU629502A1 (en) * 1977-01-28 1978-10-25 Украинский научно-исследовательский институт целлюлозно-бумажной промышленности Device for determining paper dust-generating properties
SU1652908A1 (en) * 1988-10-05 1991-05-30 Tsnii Bumagi Device for determining dust-generating properties of paper

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
SOVIET INVENTIONS ILLUSTRATED Section R Week B32, 21 September 1979 Derwent World Patents Index; Class R16, AN 1979-59352B *
SOVIET PATENTS ABSTRACTS Section S-X Week 9218, 17 June 1992 Derwent World Patents Index; Class S03, AN 1992-148472 *

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002099391A3 (en) * 2001-06-05 2003-12-11 Paper Testing Instr Gmbh Particle probe
US7325699B2 (en) 2004-12-17 2008-02-05 Kimberly-Clark Worldwide, Inc. Lint-reducing container
DE102006018347A1 (en) * 2006-04-19 2007-10-25 Schwechten, Dieter, Dr. Device for collecting dust which can be inhaled for analyzing purposes comprises a filter with a housing integrated into a unit for collecting the dust
WO2009138566A1 (en) * 2008-05-14 2009-11-19 Metso Automation Oy Method and equipment for determining dust formation of moving web-like material
WO2010148217A1 (en) * 2009-06-17 2010-12-23 Smiths Detection - Toronto Ltd. Particle collection device
US9415339B2 (en) 2009-06-17 2016-08-16 Smiths Detection Montreal Inc. Particle collection device
EP2315023A1 (en) 2009-10-21 2011-04-27 Mondi Uncoated Fine & Kraft Paper GmbH Process for quantitative determination of emissions, consisting of particulate matter, from surfaces of flexible sheet-like materials and device therefore
WO2011047399A1 (en) * 2009-10-21 2011-04-28 Mondi Uncoated Fine & Kraft Paper Gmbh Process for quantitative determination of emissions, consisting of particulate matter, from surfaces of flexible sheet-like materials and device therefore
CN104266670A (en) * 2014-10-21 2015-01-07 南京际华三五二一特种装备有限公司 Simple dust resistance test box
CN107165847A (en) * 2016-05-24 2017-09-15 九阳股份有限公司 A kind of lampblack absorber detection blower fan control method
CN107165847B (en) * 2016-05-24 2019-06-04 九阳股份有限公司 A kind of kitchen ventilator detection blower fan control method
CN118500998A (en) * 2024-05-22 2024-08-16 江苏耀群工业技术有限公司 A surface dust particle analyzer

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KR100357407B1 (en) 2002-10-18
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