US20170074754A1 - Device for surface sampling - Google Patents

Device for surface sampling Download PDF

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Publication number
US20170074754A1
US20170074754A1 US15/273,949 US201615273949A US2017074754A1 US 20170074754 A1 US20170074754 A1 US 20170074754A1 US 201615273949 A US201615273949 A US 201615273949A US 2017074754 A1 US2017074754 A1 US 2017074754A1
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US
United States
Prior art keywords
material layer
protective layer
surface portion
sampling volume
sampling
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.)
Abandoned
Application number
US15/273,949
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English (en)
Inventor
Lennart Sjölèn
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.)
Expertus Kemiteknik AB
Original Assignee
Expertus Kemiteknik AB
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 Expertus Kemiteknik AB filed Critical Expertus Kemiteknik AB
Assigned to EXPERTUS KEMITEKNIK AB reassignment EXPERTUS KEMITEKNIK AB ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SJÖLÉN, Lennart
Publication of US20170074754A1 publication Critical patent/US20170074754A1/en
Priority to US17/086,490 priority Critical patent/US11320343B2/en
Abandoned legal-status Critical Current

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    • 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
    • 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
    • B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
    • B65D65/02—Wrappers or flexible covers
    • B65D65/22—Details
    • 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
    • G01N1/10—Devices for withdrawing samples in the liquid or fluent state
    • 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
    • G01N2001/028—Sampling from a surface, swabbing, vaporising
    • 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
    • G01N1/10—Devices for withdrawing samples in the liquid or fluent state
    • G01N2001/1056—Disposable (single-use) samplers

Definitions

  • the present invention relates generally to devices for surface sampling.
  • a drawback with the known art is that difficulties arise when trying to remove the protective sheet of the adhesive patch in order to expose the adhesive surface of the adhesive patch prior to use. It is often a time consuming and cumbersome procedure which is made even more difficult if the person carrying out the task is wearing protective gloves as is often the case. Further, this procedure increases the risk of unwanted contact to the adhesive surface of the adhesive patch, leaving dirt on the adhesive surface as well as unwanted removal of adhesive, whereby the adhesive ability of the device is reduced. Certain requirements have to be met according to a test described in the relevant ISO-Standard in this technical field in terms of withstanding the increased pressure resulting from filling the sampling compartment without leakage occurring. As a result, the adhesive patch may be hard to use in certain conditions or on certain surfaces and shapes of surfaces, as the adhesive patch may fall off or allow air or dirt to enter from the outside causing contamination of the sampling compartment.
  • Another drawback during the use of the adhesive patches of the known art is the risk of contaminating the sampling compartment or volume with unwanted/foreign contaminants unrelated to surface to be sampled, as a result of existing ways of manually removing the filler device from the sampling volume prior to use.
  • This risk is especially high in the environment wherein these adhesive patches are commonly used for sampling, i.e. in industrial environments which can be dusty or filled with residues from blasting sand previously used on a surface to be painted which cleanliness is tested using the sample prior to painting. This may cause the result of the sampling to be erroneous.
  • An object of the present invention is to create a device for surface sampling which is easier, less time-consuming and therefore both more economic and safer to use.
  • Another object of the present invention is to create a device for surface sampling wherein device more reliably sticks to a given surface.
  • Another object is to create a device for surface sampling which reduces the risk of contamination in the sampling volume.
  • a device for surface sampling comprising:
  • a flat material layer comprising a surface portion and a circumferential edge portion defining the boundary of the surface portion, further comprising a sampling volume, wherein the sampling volume is adapted to comprise a filler device for filling out the sampling volume, a protective layer arranged on the surface portion of the material layer by an adhesive arranged on the material layer, wherein a portion of the protective layer extends beyond the boundary of the surface portion for facilitating a removal of the protective layer from the material layer.
  • a device for surface sampling comprising:
  • a flat material layer comprising a surface portion and a circumferential edge portion defining the boundary of the surface portion, further comprising a sampling volume, wherein the sampling volume is adapted to comprise a filler device of the material for filling out the sampling volume, a protective layer arranged on the surface portion of the material layer by an adhesive arranged on the material layer, wherein a gripping device is arranged between the protective layer and the material layer comprising a portion extending beyond the boundary of the surface portion for facilitating a removal of the protective layer from the flat material layer.
  • the gripping device is attached to the underside of the protective layer using an adhesive.
  • the gripping device is further attached to the upper side of the protective layer using an adhesive.
  • the gripping device is a thin thread.
  • the gripping device is a flat elongated sheet device.
  • the gripping device comprises a silicone treated portion.
  • the entire gripping device is silicone treated.
  • the gripping device comprises a portion non-treated with silicon.
  • At least a portion of the silicon treated portion extends beyond the boundary of the material.
  • the gripping device extends beyond the boundary of the material layer on two sides.
  • a filler device is arranged in the sampling volume.
  • the portion of the gripping device, non-treated with silicon is attached to the filler device by the adhesive.
  • a device for surface sampling comprising:
  • a flat material layer comprising a surface portion and a circumferential edge portion defining the boundary of the surface portion, further comprising a sampling volume, wherein the sampling volume is adapted to comprise a filler device of the material for filling out the sampling volume, a protective layer arranged on the surface portion of the material layer by an adhesive arranged on the material layer, wherein a gripping device is attached to an upper side of the protective layer comprising a portion extending beyond the boundary of the surface portion for facilitating a removal of the protective layer from the flat material layer.
  • a device for surface sampling comprising:
  • a flat material layer comprising a surface portion and a circumferential edge portion defining the boundary of the surface portion, further comprising a sampling volume, wherein the sampling volume is adapted to comprise a filler device of the material for filling out the sampling volume, a protective layer arranged on the surface portion of the material layer by an adhesive arranged on the material layer, wherein a gripping device comprising one portion attached to an upper side of the protective layer comprising a further portion extending entirely within the boundary of the surface portion for facilitating a removal of the protective layer from the flat material layer.
  • a device for surface sampling wherein the device is configured for being fixed to a test surface, and for allowing washing/extracting liquid to be injected and extracted from the device while being fixed to the test surface, the device comprising:
  • a flat material layer comprising a surface portion and a circumferential edge portion defining the boundary of the surface portion, further comprising a sampling volume, wherein the sampling volume is adapted to comprise a filler device for filling out the sampling volume, a protective layer arranged on the surface portion of the material layer by an adhesive arranged on the material layer, characterized in that a portion of the protective layer extends beyond the boundary of the surface portion for facilitating a removal of the protective layer from the material layer.
  • forming of the sampling volume is carried out using a first punch and adding a latex sheet or thin elastomer film is carried out before using the punch for forming the circumferential edge portion.
  • punching using the punch for forming the circumferential edge portion forms at least punching lines 2 d 1 and 2 d 2 having a first distance there between, and wherein the punching using punch for forming the portion 3 a , forms at least punching lines 3 a 1 and 3 a 2 having a second distance there between, wherein the second distance is larger than the first distance at least where the portion 3 a is formed.
  • forming the portion 3 a is carried out by punching through latex sheet or thin elastomer film 9 , the material layer 2 in addition to the protective layer 3 .
  • FIGS. 1-1 ′ shows a perspective view of a device for surface sampling according to one embodiment of the invention.
  • FIGS. 2 a -2 d shows a perspective view of a device for surface sampling according to one embodiment of the invention.
  • FIG. 2 a ′′ shows a side view of a gripping device.
  • FIGS. 2 a ′- 2 d ′ shows perspective views of a device for surface sampling according to FIGS. 2 a -2 d , wherein the interior of the device for surface sampling is disclosed.
  • FIGS. 2 e , 2 e ′, 2 f , 2 f ′ show embodiments of the invention where the gripping device has a rectangular shape.
  • FIG. 2 g , 2 g ′, 2 h , 2 h ′ show embodiments of invention where the gripping device has a rounded shape in one end, and an angled shape in one end.
  • FIG. 3-3 ′ shows perspective views of a device for surface sampling.
  • FIG. 4-4 ′ shows perspective views of a device for surface sampling.
  • FIG. 5-5 ′ shows perspective views of a device for surface sampling.
  • FIG. 6 shows a perspective view of a device for surface sampling.
  • FIG. 7 shows a perspective view of a device for surface sampling.
  • FIGS. 8 a -8 b show perspective views of a device for surface sampling.
  • FIG. 9 shows a method of manufacturing a device for surface sampling.
  • planar should be understood as something essentially extending in two dimensions. This should not be understood as not having any extension in the third dimension.
  • planar or flat is defined as wherein a thickness or height dimension of the device 1 is less than any of the extensions of the device 1 , perpendicular to the thickness or height direction, defining the surface area of the device 1 .
  • the use of underside and upper side throughout the text are used for explanatory purposes only. The use of the device 1 enables it to be attached to surfaces having arbitrary normal directions in the three-dimensional space, wherein these surfaces or normal direction of these surfaces may basically have any direction.
  • FIGS. 1-1 ′ shows a perspective view of a device 1 for surface sampling, i.e. whereby a surface can be tested by the aid of chemical analysis, for instance by checking for existing contaminants, substances or particles in the test surface area.
  • FIG. 1 shows the device 1 in a closed state prior to usage and
  • FIG. 1 ′ shows the interior of the device 1 .
  • the device 1 for surface sampling comprises a flat or planar material layer 2 comprising a surface portion 2 c and a circumferential edge portion 2 d encompassing the surface portion 2 c and thus defining a boundary of the surface portion 2 c .
  • the material layer 2 comprises a foam material.
  • the material layer is made of ageing-resistant, flexible material with closed pores, e.g. polyethylene foam.
  • the foam material is a double-stick foam material.
  • adhesive is arranged on the underside and on the upper side of the material layer 2 , wherein a protective sheet 8 is present on the underside and removed to be replaced by a latex sheet 9 or thin elastomer film 9 , in a manufacturing step.
  • the flat material layer 2 comprises several layers of double-stick foam are arranged onto each other.
  • the flat material layer 2 has a depth of between 1-5 mm.
  • the device 1 may have a square shape.
  • the device 1 may have a rectangular shape.
  • the device 1 may have a circular shape.
  • the device 1 may thus have various forms, shapes and dimensions.
  • the dimensions/size of the device 1 is a 5 ⁇ 5 cm shaped square.
  • the material layer 2 has a thickness of 1-5 mm.
  • the device 1 for surface sampling further comprises a sampling volume 2 a .
  • the sampling volume 2 a is adapted to comprise a filler device 2 b , which essentially fills out the sampling volume 2 a prior to use and forms a reinforcement until the device is used.
  • the filler device 2 b may be removed from the sampling volume 2 a , thus creating a recess in the surface portion 2 c .
  • the filler device 2 b is a cut-out of the material 2 a .
  • the cut-out of the material is created during manufacturing of the device 1 in a punching process step.
  • the filler device 2 b is a separate material compared to the material layer 2 .
  • the filler device has a round or circular shape.
  • the corresponding sampling area of the sampling volume 2 a is 12.5 cm 2 .
  • the sampling volume has a depth of 1-2 mm.
  • the filler device 2 b may have various forms, shapes and dimensions to fit various needs. The filler device 2 b may for instance be square circular, rectangular, elliptical etc.
  • the device 1 for surface sampling further comprises a protective layer 3 arranged on the surface portion 2 c of the material layer 2 by an adhesive 4 arranged on the material layer 2 .
  • the adhesive 4 is an adhesive layer covering the surface portion 2 c .
  • the protective layer 3 is a thin sheet of paper.
  • the protective layer 3 is treated, at least on one side preferably the underside 3 b , with silicon or other suitable substances or material to more easily be detachable from the adhesive and the material layer 2 .
  • the protective layer 3 is a siliconized sheet of paper.
  • a portion 3 a of the protective layer 3 extends beyond the boundary of the surface portion 2 c for facilitating a removal of the protective layer 3 from the material layer 2 .
  • a person aiming to remove the protection layer may more easily grasp the portion 3 a extending beyond the surface portion 2 a and pull off the protective layer 3 from the material layer 2 .
  • the shape of the portion 3 a may be rounded as in FIG. 1 or have other geometrical shapes, and extend beyond the boundary of the surface portion 2 c to a varying extent.
  • the portion 3 a extends by 1%-50% of the total length or diameter of the device 1 , beyond the boundary of the surface portion 2 c , in the same or a parallel direction as the extension of the portion 3 a . According to one embodiment, the portion 3 a extends by 0.5-25 mm beyond the boundary of the surface portion 2 c . According to one embodiment, the largest extension of the portion 3 a in a direction opposite to the extension beyond the boundary is between 10%-100% of the length of the device 1 in a direction parallel to the extension in this direction. According to one embodiment, a certain portion of the protective layer 3 directly above the filler device 2 b may not be siliconized or treated by any other means to more easily detach from the adhesive.
  • the protective layer 3 will be removed to expose the adhesive 4 prior to attaching the device 1 for sampling, and at the same time remove the filler device 2 b from the sampling volume 2 a which will thus stick to the protective layer 3 .
  • no direct contact of a human to the filler or sampling volume 2 a is needed during removal for the filler device 2 b which reduces the risk of contaminating the sampling volume 2 a.
  • FIGS. 2 a -2 d , and FIGS. 2 a ′- 2 d ′ discloses a device 1 for surface sampling according to the embodiment of FIG. 1 except for the portion 3 a .
  • FIGS. 2 a -2 d , and FIGS. 2 a ′- 2 d ′ further discloses a device 1 wherein a gripping device 5 of various respective shapes are arranged between the protective layer 3 and the material layer 2 comprising a portion 5 a , 6 a extending beyond the boundary of the surface portion 2 c for facilitating a removal of the protective layer 3 from the material layer 2 .
  • the gripping device 5 is attached to the underside 3 b of the protective layer 3 using an adhesive.
  • the length of the portion 5 a , 6 a extending beyond the boundary of the surface portion 2 c is 5% to 50% of the total length of the protective layer 3 . According to one embodiment, the length of the portion 5 a , 6 a extending beyond the boundary of the surface portion 2 c is less than the length of the portion attached to the underside 3 b of the protective layer 3 . According to one embodiment, the length of the portion 5 a , 6 a extending beyond the boundary of the surface portion 2 c is less than a third of the total length of the protective layer 3 .
  • the gripping device 5 comprises a sheet having an upper side 5 c ′ and an underside 5 b ′ wherein an adhesive is arranged on the underside 5 b ′ of the gripping device 5 /sheet.
  • the gripping device 5 is further attached to the upper side 3 c of the protective layer 3 using the adhesive on the underside 5 b ′ of the gripping device 5 , wherein the gripping device 5 is bent via a material bridge 5 d of the gripping device 5 as seen in FIG. 2 a ′′, wherein the material bridge 5 d connects an upper portion 5 c and a lower portion 5 b of the gripping device 5 .
  • two separate gripping devices 5 are simply adhered to each other at their under sides 5 b ′ and a respective side of the protective layer 3 is arranged in between the two gripping devices 5 .
  • the gripping device 5 is solely arranged and attached to the upper side 3 c of the protective layer 3 at portion 5 e , using an adhesive, comprising a portion 5 a extending beyond the boundary of the surface portion ( 2 c ) for facilitating a removal of the protective layer ( 3 ) from the flat material layer ( 2 ). This embodiment can be seen in FIG. 7 .
  • the gripping device 5 is attached to the upper side 3 c of the protective layer 3 comprising a portion 5 a essentially extending in a direction non-parallel to the surface portion ( 2 c ) for facilitating a removal of the protective layer ( 3 ) from the flat material layer ( 2 ). Therefore, the portion 5 a will extend in a direction non-parallel to the surface of the upper side 3 c of the protective layer 3 . According to one embodiment, no portion of the gripping device 5 a extends beyond the boundary of the surface portion 2 c .
  • the gripping device 5 may first be arranged to extend beyond the boundary of the surface portion 2 c and then angled, folded or bent to extend above the surface portion 2 c or upper side of the protective layer 3 .
  • a gripping device ( 5 , 6 ) comprising one portion 5 e attached to the upper side 3 c of the protective layer ( 3 ) comprising a further portion 5 f is extending entirely within the boundary of the surface portion 2 c for facilitating a removal of the protective layer ( 3 ) from the flat material layer 2 .
  • This further portion 5 f may not be attached to the upper side of the protective layer 3 .
  • this further portion 5 f essentially rests parallel to the surface portion 2 c and upper side 3 c of the protective layer 3 .
  • the gripping device 5 may first be arranged to extend beyond the boundary of the surface portion 2 c and then angled, folded or bent to extend above the surface portion 2 c or upper side of the protective layer 3 . This embodiment can be seen in FIG. 8 b .
  • the gripping device 5 is arranged at an arbitrary position on the protective layer 3 .
  • the gripping device 5 has a circular shape.
  • the gripping device 5 has a rounded shape in one end, and an angled shape in one end, wherein the gripping device 5 is attached at its rounded portion (s) via adhesive to the protective layer 3 .
  • the gripping device 5 has a rectangular shape. According to one embodiment as seen in FIG.
  • the gripping device 5 has a rounded shape in one end, and an angled shape in one end, wherein the gripping device 5 is attached at its angled portion(s) via adhesive to the protective layer 3 .
  • the embodiments described in FIGS. 2 a , 2 a ′, 2 g , 2 g ′ may comprise similar material bridges as 5 d described in FIG. 2 a ′′, but may be comprised by two separate gripping devices 5 simply adhered to each other and a respective side of the protective layer 3 .
  • the gripping device 5 is made of a similar or the same material as the protective layer 3 .
  • FIG. 3 shows a device 1 according to FIG. 1 except for the portion 3 a .
  • FIG. 3 further shows discloses a device 1 wherein a gripping device 6 is arranged between the protective layer 3 and the material layer 2 comprising a portion 6 a extending beyond the boundary of the surface portion 2 c for facilitating a removal of the protective layer 3 from the material layer 2 .
  • the gripping device 6 is a thin thread.
  • the thin thread is a comprised by a fishing line.
  • the thin thread is comprised by nylon, polyvinylidene fluoride (PVDF, and called fluorocarbon), polyethylene, Dacron and Dyneema (UHMWPE). The most common type is monofilament, made of a single strand.
  • FIG. 3 ′ discloses the invention according to FIG. 3 wherein the interior of the device 1 and the thread 6 are shown.
  • FIGS. 4-4 ′ shows a device 1 for surface sampling according to FIG. 1 except for the portion 3 a .
  • FIG. 4 further discloses a device 1 wherein a gripping device 6 is arranged between the protective layer 3 and the material layer 2 comprising a portion 6 a extending beyond the boundary of the surface portion 2 c for facilitating a removal of the protective layer 3 from the material layer 2 .
  • the gripping device 6 is a flat elongated sheet device comprising a silicone treated portion 6 a , B.
  • the entire gripping device 6 is silicon treated.
  • the gripping device 6 comprises a portion 6 b , A, non-treated with silicon, wherein at least a portion of the silicon treated portion 6 a extends beyond the boundary of the material 2 .
  • the non-treated portion of the gripping device 6 is attached to the filler device 2 b of the material by the adhesive 4 . Therefore when a user pulls the portion a of gripping device 6 the protective layer 3 will be removed to expose the adhesive 4 prior to attaching the device 1 for sampling, and at the same time remove the filler device 2 b from the sampling volume 2 a .
  • FIG. 4 ′ discloses the invention according to FIG. 4 wherein the interior of the device 1 and the gripping device 6 are shown.
  • FIG. 5-5 ′ discloses a similar device 1 as shown in FIG. 4-4 ′, however this device 1 comprises an elongated gripping device 6 comprising two portions 6 a extending beyond the boundary of the surface portion 2 c , on a respective side of the device 1 /surface portion 2 c , i.e. on two sides of the device 1 /surface portion 2 c or, in the case of a rounded or circular device 1 , at two positions of the device 1 /surface portion 2 c .
  • the gripping device 6 comprises a central portion 6 b attached to the filler device 2 b of the material by the adhesive 4 .
  • FIG. 5 ′ discloses the invention according to FIG. 5 wherein the interior of the device 1 and the gripping device 6 are shown.
  • FIG. 6 shows a device 1 similar to that of FIG. 5 , wherein the gripping entire gripping device 6 is silicone treated.
  • the embodiment of FIG. 6 would have the similar appearance as FIG. 5 in a closed state, i.e. not showing the interior of the device 1 .
  • the gripping device 6 is made of a similar or the same material as the protective layer 3 .
  • Using the device 1 for surface sampling may be carried out according to the following steps.
  • a user looks for a suitable surface on which the test can be made.
  • the surface can for instance be horizontal, vertical, slanted or somewhat concave.
  • the user removes the protective layer 3 by grasping the portion 3 a or the gripping device 5 , 6 and pulling it off the material layer 2 .
  • the filler device 2 b is thereby automatically removed from the sampling volume 2 a .
  • the filler device 2 b is removed by hand/manually.
  • the device 1 is thereafter pressed with the exposed surface portion 2 c having adhesive 4 onto a selected test surface.
  • the device 1 is fixed on the surface by firmly pressing with the finger tips onto the device 1 .
  • a syringe (now shown) is thereafter filled with approx. 1-2 ml of washing/extracting liquid determined by the final analysis that is to be performed.
  • the washing/extracting liquid is thereafter injected into the sampling volume 2 a by piercing the syringe needle through the body of the device 1 into the sampling volume 2 a of the device 1 and injecting the content of the syringe. If necessary, the needle can be bent to get a convenient angle. Thereafter, a part of the liquid and is sucked out from the sampling volume 2 a and reintroduced into the sampling volume 2 a while maintaining the needle inserted. This will produce turbulence which improves the dissolution of the contaminants, particles and substances.
  • the device 1 may be carefully rubbed especially when the sample is bound in a thick layer of contaminants. Finally, the as much as possible of the content in the sampling volume 2 a is sucked out and retrieved and transferred to a cylinder (not shown) for further analysis. For even higher accuracy, the injection and turbulence creation parts may be carried out repeatedly.
  • FIG. 9 shows a method of manufacturing the device 1 .
  • the method is carried out by a feeding elongated variants of the components, i.e. parts 2 , 3 , 9 , of the device 1 to be formed into the device 1 , but also part 8 , and use rolls 10 a , 10 b , 10 c , 10 d for applying and/or removing at least some of the parts, 3 , 8 , 9 , thus forming different layers, and use punches 7 a , 7 b , 7 c , e.g.
  • a first punch 7 a a first punch 7 a , a second or further or edge portion forming punch 7 b , and a third or yet another or further punch 7 c for punching through the parts, 2 , 3 , 8 , 9 , in a manner wherein the device 1 is formed.
  • the parts 2 , 3 , 9 to be formed into the device 1 is heavily enlarged in relation to the rolls and punches to better explain the method/process.
  • an elongated material layer 2 or elongated variant of the material layer 2 is fed in a left direction as seen in FIG. 9 .
  • a liner in the form of a protective sheet 8 is arranged along the elongated material layer 2 , wherein an adhesive layer is present between the material layer 2 and the protective sheet 8 .
  • An arrow shows the feeding direction as well as the direction of rotation of the rolls and punches.
  • feeding is carried out by using a conveyor belt (not shown).
  • feeding and punching is carried out by the aid of opposing punches to the one disclosed in FIG. 9 (not shown).
  • the method further comprises removing liner 11 by using a first roll 10 a configured to remove a liner 11 , wherein the surface portion 2 c of the material layer 2 and an adhesive layer thereon is exposed.
  • the method further comprises applying a protective layer 3 onto the adhesive layer using a second roll 10 b on the side of the material layer opposite the protective sheet 8 , i.e. on the side where the liner 11 has been removed.
  • the method further comprises forming the cut-out of the material 2 , i.e.
  • the method further comprises removing the protective sheet 8 using a roll 10 c .
  • the protective sheet 8 remains on the adhesive layer/material layer 2 at portions covering the sampling volume 2 a .
  • the method further comprises applying a latex sheet or thin elastomer film 9 on the same side of the material layer 2 at which the protective sheet 9 was removed.
  • the remaining protective sheet 8 thus prevents a direct contact between the latex sheet or thin elastomer film and the adhesive layer which enables the removing of the filler device 2 b from the sampling volume 2 a .
  • the method further comprises forming a circumferential edge portion 2 d of the material layer by punching through the latex sheet or thin elastomer film and the material layer 2 using a second or further punch 7 b , thus forming punching lines or cuts 2 d 1 and 2 d 2 , In this step, punching is not carried out through the protective layer 3 .
  • the protective layer 3 remains un-punched.
  • the fact that only a part of the layers are cut and thus the limited tolerances thereby allowed puts a high requirement in terms of exactness in the forming of the punch and punching portions thereon as well as entire process arrangement. This is especially true since the punch 7 b punches through different materials having different characteristics. Of particular difficulty is to punch through the thin and sensitive latex sheet or elastomer film which requires a sharp punching portion, further through the material layer, and which at the same time does not punch through the protective layer 3 in this step.
  • a further roll 10 e (not shown) is arranged between punches 7 b and 7 c , for removing any spill or waste between the forming devices 1 and to facilitate a next punching step wherein the portion 3 a is formed.
  • the removed waste is shown by the dotted line in FIG. 9 .
  • the waste between the forming devices 1 is left between the forming devices 1 .
  • the method further comprises forming a portion 3 a of the protective layer by punching through the protective layer 3 using a yet a further punch 7 c , forming at least punching line or cut 3 a 1 whereby the punching, or at least a part of the punching when only the portion 3 a extends beyond the boundary of the surface portion or extending from the circumferential edge portion 2 d , is carried out outside the circumferential edge portion 2 d previously formed.
  • outside in relation to another portion or punching line is defined as further away from a central portion of the device 1 to be shaped.
  • outside in relation to another portion or punching line is defined as further away from a position or central line arranged at a center between the punching lines 2 d 1 and 2 d 2 .
  • punching is carried out outside at least a portion of the circumferential edge portion 2 d , e.g. if the device 1 is to be shaped as a circle, or at least outside a portion of one edge portion 2 d if the device 1 is to be shaped in a rectangular or square.
  • a punching line or cut 3 a 2 is formed essentially through the existing punching line 2 d 2 or at least in a close proximity to this punching line.
  • forming the portion 3 a is carried out by punching through latex sheet or thin elastomer film 9 , the material layer 2 in addition to the protective layer 3 as described above.
  • the parts 2 , 3 , 9 to be formed into the device 1 as well as part 8 has a width opposite the feeding direction which corresponds to the width of the device 1 .
  • the parts 2 , 3 , 9 to be formed into the device 1 has a width opposite the feeding direction which is larger than the width of the device 1 .
  • the punches 7 a , 7 b , 7 c may thus have various shapes and be configured to punch in either a lengthwise feeding direction or a direction perpendicular to the feeding direction or both.
  • the punches 7 a , 7 b , 7 c are rotary punches.
  • the feeding is carried out in a continuous manner, i.e.
  • the punches 7 a , 7 b , 7 c are flat punches. In the latter case, the feeding of the parts 2 , 3 , 8 , 9 may be carried out in a stepwise manner.
  • the punch 7 c may also be configured to shape the portion 3 a e.g. as seen in 1 , 1 ′.
  • the punch 7 c may also be configured to shape the portion 3 a such that the portion 3 a extends outside the boundary 2 d along the entire side of the device 1 or at least along a part of the side or along one of several sides.
  • the punching carried out by the punch 7 c extends through the latex sheet or thin elastomer film 8 and the material layer 2 outside either side of or at least outside at least two sides of the punch forming the sampling volume 2 a .
  • forming the portion 3 a using the further punch 7 c is carried out by defining the distance between at least two opposite sides of the punches 3 a 1 and 3 a 2 to be greater than the distance between the punching lines 2 d 1 and 2 d 2 .
  • the distance between at least two opposite sides of the punches 3 a 1 and 3 a 2 is greater than the distance between the punches 2 d 1 and 2 d 2 at least where the portion 3 a is formed.
  • the method produces a portion 3 a irrespective of the exact placement of the punches in relation to each other and the parts 2 , 3 , 8 , 9 .
  • the method/process allows a slight displacement, offset either to the right or left in FIG. 9 , i.e. forwards or backwards in relation to the direction of feeding with regards to the previously formed punching lines 2 d 1 or 2 d 2 .
  • the displacement may be offset in a direction perpendicular to the feeding direction as well.
  • a punching by punch 7 c occurs offset slightly to the right, some waste in the form of material layer is formed to the right of 2 d 2 , as well as potentially a further portion 3 a extending beyond the boundary of the surface portion 2 c which can be used to facilitate removal of the protective layer.
  • the length of the portion 3 a i.e. the larger width between 3 a 1 and 3 a 2 to be greater than the distance between the punches 2 d 1 and 2 d 2 ensures this. If, on the other hand, a punching by punch 7 c occurs offset slightly to the left the effect is simply that a slightly larger portion 3 a is formed, i.e.
  • the punch 7 c is configured, e.g. by the shape of punching portions, to form portions 3 a at opposite sides of a side of the device 1 for every other, or any other sequence, device 1 being formed. Every second device 1 formed will thus be similar and mirrored in relation to the previous.
  • a facilitated packaging e.g. comprising a more equally distributed arranging of the shape and weight of the devices 1 is enabled in a subsequent packaging step.
  • the packaging into, as well as a subsequent removal of the devices from, into small plastic bags are facilitated.
  • a plurality of devices 1 may, due to the possibility for mirrored versions of the devices 1 , be arranged with their protective layers, i.e. of considerably lower friction than the latex sheet or elastomer film, pointing outwards, towards the side of the plastic bag.
  • the devices 1 can be arranged inside the bag in various constellations, however preferably two prerequisites are fulfilled, the outermost devices 1 have their low friction sides pointing outwards towards the side of the bag, and the devices 1 are arranged so that their portions 3 a are aligned with each other.
  • the portions 3 a are facing the bottom of the bags where they are not in the way of an operators fingers when gripping for a device 1 inside the bag, which could influence the portion 3 a and an unwanted removal of the protective layer 3 .
  • Arranging the portions 3 a aligned to each other further increase the overall ability of the plurality of devices to withstand unwanted influence on e.g. the exposed portion 3 a of a single device and not having its portion 3 a aligned with the other portions 3 a.
  • the forming of a device 1 which is configured for being fixed to a test surface, and for allowing washing/extracting liquid to be injected and extracted from the device while being fixed to the test surface wherein removal of the protective layer from the material layer at the same time as the risk of contamination is reduced in a cost efficient way, is enabled.
  • the punching using punch 7 c i.e. the forming of the protective layer 3 and the portion 3 a is carried out in one step, after the arranging of the protective layer (as well as the latex sheet or elastomer film), whereby no unwanted particles etc can enter the sampling volume or otherwise contaminate the device 1 .
  • the use of portions 3 a prevent the formed devices 1 from unwanted adhering to each other or the packaging material while being transported. This further facilitates the use of the device 1 , particularly relevant in difficult and/or dangerous environments.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Biochemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Pathology (AREA)
  • General Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Chemical & Material Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Buffer Packaging (AREA)
  • Adhesive Tapes (AREA)
US15/273,949 2014-03-24 2016-09-23 Device for surface sampling Abandoned US20170074754A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US17/086,490 US11320343B2 (en) 2014-03-24 2020-11-02 Device for surface sampling

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE1450338-7 2014-03-24
SE1450338A SE538197C2 (sv) 2014-03-24 2014-03-24 Anordning för ytprovtagning
PCT/SE2015/050334 WO2015147729A1 (en) 2014-03-24 2015-03-20 Device for surface sampling

Related Parent Applications (1)

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PCT/SE2015/050334 Continuation WO2015147729A1 (en) 2014-03-24 2015-03-20 Device for surface sampling

Related Child Applications (1)

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US17/086,490 Division US11320343B2 (en) 2014-03-24 2020-11-02 Device for surface sampling

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US20170074754A1 true US20170074754A1 (en) 2017-03-16

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US15/273,949 Abandoned US20170074754A1 (en) 2014-03-24 2016-09-23 Device for surface sampling
US17/086,490 Active US11320343B2 (en) 2014-03-24 2020-11-02 Device for surface sampling

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US (2) US20170074754A1 (zh)
EP (1) EP3123141B1 (zh)
CN (1) CN107076647A (zh)
SE (1) SE538197C2 (zh)
WO (1) WO2015147729A1 (zh)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20190195744A1 (en) * 2016-07-01 2019-06-27 Expertus Kemiteknik Ab Device for surface sampling with removal device
US10955314B1 (en) * 2015-01-06 2021-03-23 The United States Of America As Represented By The Secretary Of The Army One-handed surface sampling device
US11320343B2 (en) * 2014-03-24 2022-05-03 Expertus Kemiteknik Ab Device for surface sampling
USD980729S1 (en) * 2019-03-22 2023-03-14 Expertus Kemiteknik Ab Surface analysis tool

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DE2644281C2 (de) * 1976-09-30 1979-02-01 Battelle-Institut E.V., 6000 Frankfurt Verfahren und Vorrichtung zur Entnahme und Gewinnung von Probenmaterial, insbesondere für wissenschaftliche oder diagnostische Untersuchungen
US5088502A (en) * 1990-12-12 1992-02-18 Cuderm Corporation Skin surface sampling and visualizing device
DE19538075C1 (de) * 1995-10-13 1996-11-28 Draegerwerk Ag Verfahren und Vorrichtung zur Anreicherung von gasförmig, dampfförmig und/oder als Aerosol aus einem Gegenstand austretenden Stoffemissionen
CA2323584C (en) * 1998-03-17 2009-04-28 James R. Johnson Method and apparatus for testing surfaces
US6425997B1 (en) * 2000-06-20 2002-07-30 William C. Johnson Process for removal of chloride ions from steel surfaces
US6925896B1 (en) 2001-11-13 2005-08-09 Garrett D. Morton Method of collecting crime scene evidence
BRPI0611281A2 (pt) * 2005-05-20 2010-08-31 Premd Inc ensaio direto de proteìna de pele em amostras de pele removidas por remocão da fita
JP5739666B2 (ja) * 2007-11-20 2015-06-24 スリーエム イノベイティブ プロパティズ カンパニー 環境試料採取物品及び方法
EP2395338A1 (en) * 2010-06-10 2011-12-14 Gentras S.r.l. Device for obtaining DNA samples
SE538197C2 (sv) * 2014-03-24 2016-04-05 Expertus Kemiteknik Ab Anordning för ytprovtagning
SE540253C2 (en) * 2016-07-01 2018-05-15 Expertus Kemiteknik Ab Device for surface sampling with removal device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11320343B2 (en) * 2014-03-24 2022-05-03 Expertus Kemiteknik Ab Device for surface sampling
US10955314B1 (en) * 2015-01-06 2021-03-23 The United States Of America As Represented By The Secretary Of The Army One-handed surface sampling device
US20190195744A1 (en) * 2016-07-01 2019-06-27 Expertus Kemiteknik Ab Device for surface sampling with removal device
US10996143B2 (en) * 2016-07-01 2021-05-04 Expertus Kemiteknik Ab Device for surface sampling with removal device
USD980729S1 (en) * 2019-03-22 2023-03-14 Expertus Kemiteknik Ab Surface analysis tool
USD999653S1 (en) 2019-03-22 2023-09-26 Expertus Kemiteknik Ab Surface analysis tool

Also Published As

Publication number Publication date
US11320343B2 (en) 2022-05-03
EP3123141B1 (en) 2021-11-24
SE538197C2 (sv) 2016-04-05
CN107076647A (zh) 2017-08-18
EP3123141A4 (en) 2018-02-21
EP3123141A1 (en) 2017-02-01
US20210080356A1 (en) 2021-03-18
WO2015147729A1 (en) 2015-10-01
SE1450338A1 (sv) 2015-09-25

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