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DE20010482U1 - Tester for determining the fold strength of paper - Google Patents

Tester for determining the fold strength of paper

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Publication number
DE20010482U1
DE20010482U1 DE20010482U DE20010482U DE20010482U1 DE 20010482 U1 DE20010482 U1 DE 20010482U1 DE 20010482 U DE20010482 U DE 20010482U DE 20010482 U DE20010482 U DE 20010482U DE 20010482 U1 DE20010482 U1 DE 20010482U1
Authority
DE
Germany
Prior art keywords
folding
testing device
sample
paper
slot
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.)
Expired - Lifetime
Application number
DE20010482U
Other languages
German (de)
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE20010482U priority Critical patent/DE20010482U1/en
Publication of DE20010482U1 publication Critical patent/DE20010482U1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/20—Investigating strength properties of solid materials by application of mechanical stress by applying steady bending forces
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0014—Type of force applied
    • G01N2203/0023—Bending
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02—Details not specific for a particular testing method
    • G01N2203/026—Specifications of the specimen
    • G01N2203/0262—Shape of the specimen
    • G01N2203/0278—Thin specimens
    • G01N2203/0282—Two dimensional, e.g. tapes, webs, sheets, strips, disks or membranes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/34—Paper

Landscapes

  • 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)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Description

9 <$ &Phi;*9 <$&Phi;* mm ■« mm ■«

Prüfgerät zur Bestimmung der Falzfestigkeit von PapierTesting device for determining the folding strength of paper

Zur Bestimmung der Widerstandsfähigkeit von Papier und ähnlichen Werkstoffen gegen wiederholtes Falzen nach der Norm TAPPI T-423 cm-89 und iSO 5626 wird die Falzfestigkeit des Papiers ermittelt.To determine the resistance of paper and similar materials to repeated folding according to the TAPPI T-423 cm-89 and ISO 5626 standards, the folding strength of the paper is determined.

Die Widerstandsfähigkeit gegen wiederholtes Falzen bedeutet die Zahl von Falzungen, die eine Probe unter festgelegten Bedingungen bis zum Bruch ertragen kann. Dies geschieht bekannterweise mittels Falzgeräten.Resistance to repeated folding means the number of folds a sample can endure under specified conditions before failure. This is commonly done using folding equipment.

Entscheidend für die Prüfung des Papiers ist die Vorbehandlung unter reproduzierbaren klimatischen Bedingungen.Pretreatment under reproducible climatic conditions is crucial for testing the paper.

Wenige Grad Temperaturunterschied sowie geringe Luftfeuchtigkeitsschwankungen ha-5 ben großen Einfluß auf das Verhalten des zu prüfenden Papiers.A few degrees difference in temperature and small fluctuations in humidity have a great influence on the behavior of the paper being tested.

Das erfindungsgemäße Falzgerät, bestehend aus zwei bewegliche Klemmbacken, welche sich horizontal gegenüberstehen.The folding device according to the invention consists of two movable clamping jaws which are positioned horizontally opposite each other.

Mittels dieser Klemmbacken wird eine Probe gehaltene, die während des Falzversuchs unterschiedlicher Zugspannung ausgesetzt ist.These clamping jaws are used to hold a sample that is exposed to different tensile stresses during the folding test.

Ein geschlitztes Falzmesser gleitet zwischen vier Falzrollen hin und her und führt dabei am Papier eine bestimmte Anzahl von Doppelfalzungen je Minute aus. Die Klemmvorrichtungen werden von unten her durch Rollen gestützt und schweben frei zwischen Zugfedern, während sie in Bewegung sind.A slotted folding blade slides back and forth between four folding rollers, making a set number of double folds per minute on the paper. The clamps are supported from below by rollers and float freely between tension springs while in motion.

Das Falzmesser ist mit einem vertikalen Schlitz versehen,welcher sich jeweils etwas oberhalb beziehungsweise unterhalb der Normallage der Probe verbreitert. Die vertikalen Kanten des Schlitzes sind mit einem Radius versehen, welcher der halben Dicke des Falzmessers entspricht.
Die vier Falzrollen sind symmetrisch um den Mittelpunkt des Falzschlitzes angeordnet und vorzugsweise mit reibungsverhindemden edelsteinbesetzten Lagern ausgestattet.The folding blade is provided with a vertical slot which widens slightly above and below the normal position of the sample. The vertical edges of the slot have a radius which corresponds to half the thickness of the folding blade.
The four folding rollers are arranged symmetrically around the center of the folding slot and are preferably equipped with friction-preventing gemstone bearings.

In einer besonderen Ausgestaltung der erfindungsgemäßen Vorrichtung ist diese mit einem Zählwerk zur Erfassung der Anzahl der durchgeführten Doppelfalze, zur Bestimmung vorgegebe^erifaJzur^eo^iirid^um-Aph^lte^cäe^ Qefätfjs belfn Bruch der Probe.In a particular embodiment of the device according to the invention, it is provided with a counter for recording the number of double folds carried out in order to determine predetermined values for the fracture of the sample.

Vorzugsweise ist dieses Zählwerk so gestaltet, daß auch eine bestimmte Anzahl von durchzuführenden Doppelfalzungen vorgegeben werden kann.Preferably, this counter is designed in such a way that a certain number of double folds to be carried out can also be specified.

Um die während des Prüfens entstehende Reibungswärme zwischen Probe, Falzmesser und Falzrollen genau bestimmen zu können, ist im Prüfkopf direkt an der Probe ein TemperaturmeSsystem angeordnet.In order to be able to precisely determine the frictional heat generated between the sample, folding knife and folding rollers during testing, a temperature measuring system is arranged in the test head directly on the sample.

Jeder Prüfkopf ist mit diesem Temperaturmesssystem ausgestattet und erlaubt während des Prüfvorganges jederzeit die Temperaturveränderungen direkt an der Probe aufzunehmen. Each test head is equipped with this temperature measuring system and allows temperature changes to be recorded directly on the sample at any time during the test process.

Um einen ständigen Vergleich der Temperatur an der Probe mit der Umgebungstemperatur am Prüfgerät zu haben, ist ein weiterer Sensor im Gerät angeordnet.In order to have a constant comparison of the temperature of the sample with the ambient temperature at the test device, another sensor is arranged in the device.

Die Vorteile der erfindungsgemäßen Vorrichtung bestehen in der Bestimmung vorgegebener Falzungen, der Möglichkeit der Temperaturmessung direkt an der Probe und der Vergleich der Temperatur an der Probe mit der UmgebungstemperaturThe advantages of the device according to the invention are the determination of predetermined folds, the possibility of measuring the temperature directly on the sample and the comparison of the temperature on the sample with the ambient temperature

Claims (5)

1. Prüfgerät zur Bestimmung der Falzfestigkeit von Papier, dadurch gekennzeichnet, daß das Falzgerät aus zwei beweglichen Klemmbacken zur Aufnahme der Probe besteht, welche sich horizontal gegenüberstehen und daß ein geschlitztes Falzmesser in einer Längskugelführung zwischen vier Falzrollen hin und her gleitet und dabei am Papier eine bestimmte Anzahl von Doppelfalzungen je Minute ausführt, wobei die Klemmvorrichtungen von unten her durch Rollen gestützt werden und frei zwischen Zugfedern schweben, während sie in Bewegung sind und das Falzmesser mit einem vertikalen Schlitz versehen ist, welcher sich jeweils etwas oberhalb beziehungsweise unterhalb der Normallage der Probe verbreitert, wobei die vertikalen Kanten des Schlitzes mit einem Radius versehen sind, welcher der halben Dicke des Falzmessers entspricht, die vier Falzrollen sind symmetrisch um den Mittelpunkt des Falzschlitzes angeordnet. 1. Testing device for determining the folding strength of paper, characterized in that the folding device consists of two movable clamping jaws for holding the sample, which are arranged horizontally opposite one another, and in that a slotted folding knife slides back and forth in a longitudinal ball guide between four folding rollers and in the process carries out a certain number of double folds per minute on the paper, the clamping devices being supported from below by rollers and floating freely between tension springs while they are in motion, and the folding knife being provided with a vertical slot which widens slightly above and below the normal position of the sample, the vertical edges of the slot being provided with a radius which corresponds to half the thickness of the folding knife, the four folding rollers being arranged symmetrically around the center of the folding slot. 2. Prüfgerät nach Anspruch 1, dadurch gekennzeichnet, daß in die Vorrichtung ein Zählwerk zur Erfassung der Anzahl der durchgeführten Doppelfalze, zur Bestimmung vorgegebener Falzungen und zum Anhalten des Gerätes beim Bruch der Probe integriert ist. 2. Testing device according to claim 1, characterized in that a counter is integrated into the device for recording the number of double folds carried out, for determining predetermined folds and for stopping the device when the sample breaks. 3. Prüfgerät nach Anspruch 2, dadurch gekennzeichnet, daß dieses Zählwerk so gestaltet ist, daß auch eine bestimmte Anzahl von durchzuführenden Doppelfalzungen vorgegeben werden kann. 3. Testing device according to claim 2, characterized in that this counter is designed in such a way that a certain number of double folds to be carried out can also be specified. 4. Prüfgerät nach Anspruch 1, dadurch gekennzeichnet, daß im Prüfkopf direkt an der Probe ein Temperaturmeßsystem angeordnet ist. 4. Testing device according to claim 1, characterized in that a temperature measuring system is arranged in the test head directly on the sample. 5. Prüfgerät nach Anspruch 1, dadurch gekennzeichnet, daß im Prüfgerät ein weiteres Temperaturmeßsystem zum Messen der Umgebungstemperatur angeordnet ist. 5. Testing device according to claim 1, characterized in that a further temperature measuring system for measuring the ambient temperature is arranged in the testing device.
DE20010482U 2000-06-16 2000-06-16 Tester for determining the fold strength of paper Expired - Lifetime DE20010482U1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE20010482U DE20010482U1 (en) 2000-06-16 2000-06-16 Tester for determining the fold strength of paper

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE20010482U DE20010482U1 (en) 2000-06-16 2000-06-16 Tester for determining the fold strength of paper

Publications (1)

Publication Number Publication Date
DE20010482U1 true DE20010482U1 (en) 2000-11-30

Family

ID=7942763

Family Applications (1)

Application Number Title Priority Date Filing Date
DE20010482U Expired - Lifetime DE20010482U1 (en) 2000-06-16 2000-06-16 Tester for determining the fold strength of paper

Country Status (1)

Country Link
DE (1) DE20010482U1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10119634A1 (en) * 2001-04-20 2002-10-24 Focke & Co Device for determination of the properties of carton material used in packaging, especially thin carton used in production of hinge-lid cigarette packets has carton flaps upright during testing
CN110320094A (en) * 2019-08-08 2019-10-11 长葛市大阳纸业有限公司 A kind of tipping paper high temperature resistant test device
CN112098246A (en) * 2020-09-21 2020-12-18 金泰特 Durability test system and method for bill anti-counterfeiting paper

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10119634A1 (en) * 2001-04-20 2002-10-24 Focke & Co Device for determination of the properties of carton material used in packaging, especially thin carton used in production of hinge-lid cigarette packets has carton flaps upright during testing
CN110320094A (en) * 2019-08-08 2019-10-11 长葛市大阳纸业有限公司 A kind of tipping paper high temperature resistant test device
CN112098246A (en) * 2020-09-21 2020-12-18 金泰特 Durability test system and method for bill anti-counterfeiting paper

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Legal Events

Date Code Title Description
R207 Utility model specification

Effective date: 20010104

R150 Utility model maintained after payment of first maintenance fee after three years

Effective date: 20030714

R157 Lapse of ip right after 6 years

Effective date: 20070103