WO2010012631A1 - Device for measuring the light permeability of plastic articles - Google Patents

Device for measuring the light permeability of plastic articles Download PDF

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Publication number
WO2010012631A1
WO2010012631A1 PCT/EP2009/059381 EP2009059381W WO2010012631A1 WO 2010012631 A1 WO2010012631 A1 WO 2010012631A1 EP 2009059381 W EP2009059381 W EP 2009059381W WO 2010012631 A1 WO2010012631 A1 WO 2010012631A1
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WO
WIPO (PCT)
Prior art keywords
sample
light
optical sensor
measuring
light source
Prior art date
Application number
PCT/EP2009/059381
Other languages
French (fr)
Inventor
Silvio Amicabile
Maurizio Amicabile
Original Assignee
Repi S.P.A.
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 Repi S.P.A. filed Critical Repi S.P.A.
Publication of WO2010012631A1 publication Critical patent/WO2010012631A1/en

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/59—Transmissivity
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/255—Details, e.g. use of specially adapted sources, lighting or optical systems
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/90—Investigating the presence of flaws or contamination in a container or its contents
    • G01N21/9072—Investigating the presence of flaws or contamination in a container or its contents with illumination or detection from inside the container
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/90—Investigating the presence of flaws or contamination in a container or its contents
    • G01N21/9081—Inspection especially designed for plastic containers, e.g. preforms
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/90—Investigating the presence of flaws or contamination in a container or its contents
    • G01N21/909—Investigating the presence of flaws or contamination in a container or its contents in opaque containers or opaque container parts, e.g. cans, tins, caps, labels
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2201/00—Features of devices classified in G01N21/00
    • G01N2201/06—Illumination; Optics
    • G01N2201/069—Supply of sources
    • G01N2201/0696—Pulsed

Definitions

  • the present invention relates to a device for measuring the light permeability of manufactured articles made of plastics, particularly of preformed components made of polyethylene terephthalate and the like.
  • the aim of the present invention is to provide a measurement device that is capable of evaluating the hiding power of preformed components and bottles made of plastics, particularly made of PET (polyethylene terephthalate), rapidly and most of all to make it feasible even on production systems without having to employ laboratories and specialized technicians to perform the required analyses.
  • PET polyethylene terephthalate
  • an object of the present invention is to devise a measurement device that is simple to provide, with a reduced number of mechanical and/or electronic components, with a consequent cost containment.
  • a device for measuring the light permeability of manufactured articles made of plastics particularly of preformed components made of polyethylene terephthalate and the like characterized in that it comprises a testing system defined by a measurement chamber for accommodating a sample and containing internally at least one light source and at least one optical sensor, which is functionally connected to a data acquisition system.
  • Figure 1 is a schematic view of an embodiment of a measurement device according to the present invention
  • FIG. 2 is a block diagram of the measurement method of the measurement device shown in Figure 1. Ways of carrying out the Invention
  • the device 1 for measuring the light permeability of manufactured articles made of plastics, particularly of preformed components made of polyethylene terephthalate and the like is preferably formed by a testing system 2 that is adapted to perform the required measurements and a data acquisition system 3 that is adapted to process them and manage them.
  • the testing system 2 is composed of a measurement chamber 4 defined by a box-like body whose inner surface is light-reflective and whose outer surface is impermeable to light, so as to not allow any passage of light from the outside to its inside and such as to avoid the occurrence of light accumulation points inside it.
  • the measurement chamber 4 can be opened on one side to accommodate a sample 5 to be examined, which can consist of an already-finished container or of a preformed component of a container still to be blow-molded.
  • the sample 5 is thus arranged inside the measurement chamber 4 and is fixed thereto by means of a supporting element 6 arranged at the base of the measurement chamber 4.
  • the supporting element 6 can have a threaded hole into which the bottle is screwed.
  • the supporting element 6 is designed so as to adapt to the different types of preformed component necks that are commercially available in order to ensure that light cannot penetrate in the connection point between the sample 5 and the supporting element 6.
  • the measurement chamber 4 contains at least one light source 7 and a corresponding power supply 8, which is constituted for example by a gas discharge lamp that is arranged so as to lie inside the sample 5 when it is placed on the supporting element 6.
  • the light source 7 is adapted to generate pulsed light with high peak intensity so as to be able to pass through even very opaque walls.
  • the light generated by the light source 7 passes through the wall of the sample 5 as a function of the characteristics of permeability to light of the walls and is detected by an optical sensor 9 arranged internally with respect to the measurement chamber 4 and externally with respect to the sample 5.
  • the optical sensor 9 which can be for example an interchangeable diode with different characteristics as a function of the measurement requirement, collects the light emission and, being functionally connected to the data acquisition system 3, sends its signal to a photometric amplifier 10 in order to amplify such signal with a gain that is selectable, for example equal to 1 , 10, 100 and 1000.
  • the signal amplified by the photometric amplifier 10 is sent to a data processing block 1 1 that is constituted for example by a personal computer and is provided with means 12 for interfacing with a user device, such as for example classic INPUT and OUTPUT peripherals.
  • the data acquisition system 3 acquires the amplified signal of the optical sensor 9 expressed in volts/time, which is representative of the amount of light that passes through the sample 5 being considered.
  • This signal is integrated for a precise measurement of the quantity of light that has passed through the sample.
  • the value in volts/time is managed as an absolute quality reference value of the tested article, but by means of suitable calibrations and appropriate computing algorithms it can be matched to the value of transmittarice and/or absorbance of the sample 5 in analyses that are usually considered by using spectrophotometric equipment.
  • the method for measuring the light permeability of manufactured articles made of plastics, particularly of preformed components made of polyethylene terephthalate and the like, represented by means of the block diagram 100, in step 101 of positioning the sample 5 within the measurement chamber 4 comprises four functional steps.
  • the first step consists of a step 102 of luminous discharge of the light source 7, followed immediately by the step 103 of collection and conversion of the light generated by the light source 7 and filtered by the walls of the sample 5.
  • the signal collected by the optical sensor 9 is amplified by the photometric amplifier 10, providing the peaJk integration step 104 for subsequent transmission to the data acquisition system 3, providing the last step 105 of graphical processing of the signal and storage thereof.
  • the several steps of the method 100, as well as the other operations such as integrations, peak visualization, data storage, et cetera, are of course managed by the data acquisition system 3, which is preferably based on a personal computer and associated peripherals.
  • the device for measuring the light permeability of manufactured articles made of plastics, particularly of preformed components made of polyethylene terephthalate and the like, with the corresponding measurement method according to the present invention fully achieve the intended aim and objects, since they allow to evaluate the hiding power of preformed components and bottles made of plastics, particularly PET (polyethylene terephthalate), rapidly and most of all on-site within the production facility, increasing the number of tests and therefore the quality of the process, avoiding interruptions of the production cycle and therefore delays, costs for analyses and production rejects.
  • PET polyethylene terephthalate
  • Another advantage of the measurement device and of the corresponding method according to the present invention consists in that they can be used to measure low values of light transmittance despite the high thickness of the walls of the preformed component, allowing to perform tests before the preformed component is blow-molded.
  • Another advantage of the measurement device and of the corresponding method according to the present invention consists in that it is possible to verify the dosage of the color in the preformed component or in the bottle by measuring total light transmittance. The possibility to use different sources of light allows the invention to evaluate protection against ultraviolet radiation, color transmittance and the light barrier.
  • Another advantage of the measurement device and of the associated method according to the present invention consists in that they are simple and can be used easily even by personnel of the production department and not necessarily by qualified technicians.
  • Another advantage of the measurement device according to the present invention consists in that it is simple to provide, with consequent cost containment.
  • the device for measuring the light permeability of manufactured articles made of plastics, particularly of preformed components made of polyethylene terephthalate and the like and the corresponding method thus conceived are susceptible of numerous modifications and variations, all of which are within the scope of the appended claims. All the details may further be replaced with other technically equivalent elements.

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  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Devices For Use In Laboratory Experiments (AREA)
  • Multicomponent Fibers (AREA)

Abstract

A device for measuring the light permeability of manufactured articles made of plastics, particularly of preformed components made of polyethylene terephthalate and the like, comprising a testing system (2) defined by a measurement chamber (4) for accommodating a sample (5) and containing internally at least one light source (7) and at least one optical sensor (9), which is functionally connected to a data acquisition system (3).

Description

DEVICE FOR MEASURING THE LIGHT PERMEABILITY OF PLASTIC ARTICLES
Technical Field
The present invention relates to a device for measuring the light permeability of manufactured articles made of plastics, particularly of preformed components made of polyethylene terephthalate and the like.
The possibility to use different light sources allows the invention to evaluate protection against ultraviolet radiation, color transmittance and light barrier. Background Art
In the field of containers, especially food containers, it is necessary Io analyze the characteristics of permeability to visible and invisible light of the walls of the container, since light can alter the chemical and physical characteristics of the packaged product.
The ability to perform at least an evaluation of permeability to light on the preformed component of the container prior to any blow-molding allows to have a broad margin of action on the injection-molding press, acting when necessary as soon as the values indicate a reduction of the characteristic or barrier. Disclosure of the Invention
The aim of the present invention is to provide a measurement device that is capable of evaluating the hiding power of preformed components and bottles made of plastics, particularly made of PET (polyethylene terephthalate), rapidly and most of all to make it feasible even on production systems without having to employ laboratories and specialized technicians to perform the required analyses.
Within this aim, an object of the present invention is to devise a measurement device that is simple to provide, with a reduced number of mechanical and/or electronic components, with a consequent cost containment.
This aim, as well as these and other objects that will become better apparent hereinafter, are achieved by a device for measuring the light permeability of manufactured articles made of plastics, particularly of preformed components made of polyethylene terephthalate and the like characterized in that it comprises a testing system defined by a measurement chamber for accommodating a sample and containing internally at least one light source and at least one optical sensor, which is functionally connected to a data acquisition system.
Brief Description of the Drawings
Further characteristics and advantages of the present invention will become apparent from the description of a preferred but not exclusive embodiment of a device for measuring the light permeability of manufactured articles made of plastics, particularly of preformed components made of polyethylene terephthalate and the like, and of the associated method for performing the measurement, according to the invention, illustrated by way of non-limiting example in the accompanying drawings, wherein: Figure 1 is a schematic view of an embodiment of a measurement device according to the present invention;
Figure 2 is a block diagram of the measurement method of the measurement device shown in Figure 1. Ways of carrying out the Invention With reference to the figures, the device 1 for measuring the light permeability of manufactured articles made of plastics, particularly of preformed components made of polyethylene terephthalate and the like, is preferably formed by a testing system 2 that is adapted to perform the required measurements and a data acquisition system 3 that is adapted to process them and manage them. The testing system 2 is composed of a measurement chamber 4 defined by a box-like body whose inner surface is light-reflective and whose outer surface is impermeable to light, so as to not allow any passage of light from the outside to its inside and such as to avoid the occurrence of light accumulation points inside it.
More precisely, the measurement chamber 4 can be opened on one side to accommodate a sample 5 to be examined, which can consist of an already-finished container or of a preformed component of a container still to be blow-molded. The sample 5 is thus arranged inside the measurement chamber 4 and is fixed thereto by means of a supporting element 6 arranged at the base of the measurement chamber 4.
Advantageously, if measurements are performed on bottles with a threaded mouth, the supporting element 6 can have a threaded hole into which the bottle is screwed.
Anyway, the supporting element 6 is designed so as to adapt to the different types of preformed component necks that are commercially available in order to ensure that light cannot penetrate in the connection point between the sample 5 and the supporting element 6. Regardless of the type of sample 5 being examined and consequently of the type of supporting element used, the measurement chamber 4 contains at least one light source 7 and a corresponding power supply 8, which is constituted for example by a gas discharge lamp that is arranged so as to lie inside the sample 5 when it is placed on the supporting element 6. More precisely, the light source 7 is adapted to generate pulsed light with high peak intensity so as to be able to pass through even very opaque walls.
The light generated by the light source 7 passes through the wall of the sample 5 as a function of the characteristics of permeability to light of the walls and is detected by an optical sensor 9 arranged internally with respect to the measurement chamber 4 and externally with respect to the sample 5.
The optical sensor 9, which can be for example an interchangeable diode with different characteristics as a function of the measurement requirement, collects the light emission and, being functionally connected to the data acquisition system 3, sends its signal to a photometric amplifier 10 in order to amplify such signal with a gain that is selectable, for example equal to 1 , 10, 100 and 1000.
This allows to have a measurement that can be used in different reading applications.
The signal amplified by the photometric amplifier 10 is sent to a data processing block 1 1 that is constituted for example by a personal computer and is provided with means 12 for interfacing with a user device, such as for example classic INPUT and OUTPUT peripherals. The data acquisition system 3 acquires the amplified signal of the optical sensor 9 expressed in volts/time, which is representative of the amount of light that passes through the sample 5 being considered.
This signal is integrated for a precise measurement of the quantity of light that has passed through the sample. The value in volts/time is managed as an absolute quality reference value of the tested article, but by means of suitable calibrations and appropriate computing algorithms it can be matched to the value of transmittarice and/or absorbance of the sample 5 in analyses that are usually considered by using spectrophotometric equipment. The method for measuring the light permeability of manufactured articles made of plastics, particularly of preformed components made of polyethylene terephthalate and the like, represented by means of the block diagram 100, in step 101 of positioning the sample 5 within the measurement chamber 4 comprises four functional steps. The first step consists of a step 102 of luminous discharge of the light source 7, followed immediately by the step 103 of collection and conversion of the light generated by the light source 7 and filtered by the walls of the sample 5.
As already mentioned, thereafter the signal collected by the optical sensor 9 is amplified by the photometric amplifier 10, providing the peaJk integration step 104 for subsequent transmission to the data acquisition system 3, providing the last step 105 of graphical processing of the signal and storage thereof.
The several steps of the method 100, as well as the other operations such as integrations, peak visualization, data storage, et cetera, are of course managed by the data acquisition system 3, which is preferably based on a personal computer and associated peripherals.
It is further possible to provide additional steps of automatic control of correct operation of the system, so as to ensure measurements that are always reliable.
In practice it has been found that the device for measuring the light permeability of manufactured articles made of plastics, particularly of preformed components made of polyethylene terephthalate and the like, with the corresponding measurement method according to the present invention, fully achieve the intended aim and objects, since they allow to evaluate the hiding power of preformed components and bottles made of plastics, particularly PET (polyethylene terephthalate), rapidly and most of all on-site within the production facility, increasing the number of tests and therefore the quality of the process, avoiding interruptions of the production cycle and therefore delays, costs for analyses and production rejects.
Another advantage of the measurement device and of the corresponding method according to the present invention consists in that they can be used to measure low values of light transmittance despite the high thickness of the walls of the preformed component, allowing to perform tests before the preformed component is blow-molded. Another advantage of the measurement device and of the corresponding method according to the present invention consists in that it is possible to verify the dosage of the color in the preformed component or in the bottle by measuring total light transmittance. The possibility to use different sources of light allows the invention to evaluate protection against ultraviolet radiation, color transmittance and the light barrier.
Another advantage of the measurement device and of the associated method according to the present invention consists in that they are simple and can be used easily even by personnel of the production department and not necessarily by qualified technicians.
Another advantage of the measurement device according to the present invention consists in that it is simple to provide, with consequent cost containment. The device for measuring the light permeability of manufactured articles made of plastics, particularly of preformed components made of polyethylene terephthalate and the like and the corresponding method thus conceived are susceptible of numerous modifications and variations, all of which are within the scope of the appended claims. All the details may further be replaced with other technically equivalent elements.
In practice, the materials used, so long as they are compatible with the specific use, as well as the contingent shapes and dimensions, may be any according to requirements and to the state of the art. The disclosures in Italian Patent Application no. MI2008A001439, from which this application claims priority, are incorporated herein by reference.
Where technical features mentioned in any claim are followed by reference signs, those reference signs have been included for the sole purpose of increasing the intelligibility of the claims and accordingly such reference signs do not have any limiting effect on the interpretation of each element identified by way of example by such reference signs.

Claims

1. Device for measuring the light permeability of manufactured articles made of plastics, particularly of preformed components made of polyethylene terephthalate and the like, characterized in that it comprises a testing system (2) defined by a measurement chamber (4) for accommodating a sample (5) and containing internally at least one light source (7) and at least one optical sensor (9), which is functionally connected to a data acquisition system (3).
2. The device according to claim 1, characterized in that said data acquisition system (3) comprises a photometric amplifier (10) for amplifying the signal that arrives from said optical sensor (9), a data processing block (11) and means (12) for interfacing with users.
3. The device according to one or more of the preceding claims, characterized in that said measurement chamber (4) comprises a box-like body with a light-reflective inner surface and a light-tight outer surface.
4. The device according to one or more of the preceding claims, characterized in that it comprises an element (6) for supporting the sample (5) inside said box-like body.
5. The device according to one or more of the preceding claims, characterized in that said light source (7) can be arranged inside said sample
(5).
6. The device according to one or more of the preceding claims, characterized in that said at least one optical sensor (9) can be arranged outside said sample (5).
7. A method for measuring the light permeability of manufactured articles made of plastics, particularly of preformed components made of polyethylene terephthalate and the like, characterized in that it comprises a step (101) of positioning a sample (5) within a measurement chamber (4) and a step (102) of the luminous discharge of at least one light source (7) that can be arranged inside said sample (5), said luminous discharge step (102) occurring after said positioning step (101).
8. The method according to claim 7, characterized in that it comprises a step (103) of collecting and converting the light generated by said light source (7) and filtered by the walls of said sample (5) by means of at least one optical sensor (9) that can be arranged outside said sample, said collection and conversion step (103) being simultaneous and subsequent to said luminous discharge step (102).
9. The method according to one or more of the preceding claims 7 and 8, characterized in that it comprises a step (104) of peak integration of the signal collected by said at least one optical sensor (9) by means of a photometric amplifier (10) for subsequent sending to a data acquisition system (3) comprising a data processing block (11) and interface means (12) with users, said peak integration step (104) being subsequent to said collection and conversion step (103).
PCT/EP2009/059381 2008-08-01 2009-07-21 Device for measuring the light permeability of plastic articles WO2010012631A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT001439A ITMI20081439A1 (en) 2008-08-01 2008-08-01 PERMEABILITY MEASURER DEVICE IN THE LIGHT OF PLASTIC MATERIALS, PARTICULARLY OF POLYETHYLENTHREHALATE AND SIMILAR PREFORMATIONS.
ITMI2008A001439 2008-08-01

Publications (1)

Publication Number Publication Date
WO2010012631A1 true WO2010012631A1 (en) 2010-02-04

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PCT/EP2009/059381 WO2010012631A1 (en) 2008-08-01 2009-07-21 Device for measuring the light permeability of plastic articles

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WO (1) WO2010012631A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013041260A1 (en) * 2011-09-20 2013-03-28 Krones Ag Method and device for inspecting containers and preforms
WO2021262944A1 (en) * 2020-06-24 2021-12-30 The Chemours Company Fc, Llc Method for determining light penetration of a package system
WO2023017507A1 (en) * 2021-08-08 2023-02-16 Shlomoff Liraz Container inspection system

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3328593A (en) * 1963-07-29 1967-06-27 Owens Illinois Inc Apparatus for measuring the wall thickness of glass containers
GB1098122A (en) * 1964-02-24 1968-01-03 Steinkohlenbergwerke Mathias Stinnes Ag Apparatus for testing the thickness of glass surfaces in hollow glass articles
GB1422129A (en) * 1972-12-22 1976-01-21 Mccall J D Method and apparatus for monitoring surface coatings or glass containers
US4304995A (en) * 1978-09-11 1981-12-08 Oy Kolster Ab Method and apparatus for measuring the wall thickness in a plastic article
EP0978710A2 (en) * 1998-08-07 2000-02-09 FRIES PLANUNGS- UND MARKETINGGESELLSCHAFT m.b.H. Method for wall thickness measurement applied to the complete surface of a hollow body manufactured by a transparent material
US20040065841A1 (en) * 2002-08-02 2004-04-08 Darr Richard C. Process and apparatus for testing bottles
DE202005006220U1 (en) * 2005-04-18 2005-07-14 Khs Maschinen- Und Anlagenbau Ag Inspection arrangement especially for food products contained in jars or bottles has an inspection housing that covers the inspection area and which has internal walls with a light color
WO2005103605A1 (en) * 2004-04-22 2005-11-03 Opo Sprl Instrument for measuring the thickness of a coating on bottles

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3328593A (en) * 1963-07-29 1967-06-27 Owens Illinois Inc Apparatus for measuring the wall thickness of glass containers
GB1098122A (en) * 1964-02-24 1968-01-03 Steinkohlenbergwerke Mathias Stinnes Ag Apparatus for testing the thickness of glass surfaces in hollow glass articles
GB1422129A (en) * 1972-12-22 1976-01-21 Mccall J D Method and apparatus for monitoring surface coatings or glass containers
US4304995A (en) * 1978-09-11 1981-12-08 Oy Kolster Ab Method and apparatus for measuring the wall thickness in a plastic article
EP0978710A2 (en) * 1998-08-07 2000-02-09 FRIES PLANUNGS- UND MARKETINGGESELLSCHAFT m.b.H. Method for wall thickness measurement applied to the complete surface of a hollow body manufactured by a transparent material
US20040065841A1 (en) * 2002-08-02 2004-04-08 Darr Richard C. Process and apparatus for testing bottles
WO2005103605A1 (en) * 2004-04-22 2005-11-03 Opo Sprl Instrument for measuring the thickness of a coating on bottles
DE202005006220U1 (en) * 2005-04-18 2005-07-14 Khs Maschinen- Und Anlagenbau Ag Inspection arrangement especially for food products contained in jars or bottles has an inspection housing that covers the inspection area and which has internal walls with a light color

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013041260A1 (en) * 2011-09-20 2013-03-28 Krones Ag Method and device for inspecting containers and preforms
CN103889599A (en) * 2011-09-20 2014-06-25 克朗斯股份公司 Method and device for inspecting containers and preforms
US9121765B2 (en) 2011-09-20 2015-09-01 Krones Ag Method and device for inspecting containers and preforms
CN103889599B (en) * 2011-09-20 2016-05-04 克朗斯股份公司 For detection of the method and apparatus of container and prefabricated component
WO2021262944A1 (en) * 2020-06-24 2021-12-30 The Chemours Company Fc, Llc Method for determining light penetration of a package system
WO2023017507A1 (en) * 2021-08-08 2023-02-16 Shlomoff Liraz Container inspection system

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