WO2011145459A1 - Dispositif pour étirer une éprouvette et procédé pour étirer celle-ci - Google Patents

Dispositif pour étirer une éprouvette et procédé pour étirer celle-ci Download PDF

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Publication number
WO2011145459A1
WO2011145459A1 PCT/JP2011/060590 JP2011060590W WO2011145459A1 WO 2011145459 A1 WO2011145459 A1 WO 2011145459A1 JP 2011060590 W JP2011060590 W JP 2011060590W WO 2011145459 A1 WO2011145459 A1 WO 2011145459A1
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WO
WIPO (PCT)
Prior art keywords
rail
clips
test piece
group
stretching
Prior art date
Application number
PCT/JP2011/060590
Other languages
English (en)
Japanese (ja)
Inventor
佐野　孝義
Original Assignee
東芝機械株式会社
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 東芝機械株式会社 filed Critical 東芝機械株式会社
Priority to DE112011101680T priority Critical patent/DE112011101680T5/de
Priority to CN201180024676.9A priority patent/CN102893139B/zh
Priority to KR1020127033084A priority patent/KR101764946B1/ko
Publication of WO2011145459A1 publication Critical patent/WO2011145459A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
    • B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
    • B29C55/10—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial
    • B29C55/12—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
    • B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
    • B29C55/10—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial
    • B29C55/12—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial
    • B29C55/16—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial simultaneously
    • B29C55/165—Apparatus therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/003—Delivering or advancing articles from machines; Advancing articles to or into piles by grippers
    • B65H29/005—Delivering or advancing articles from machines; Advancing articles to or into piles by grippers by chains or bands having mechanical grippers engaging the side edges of articles, e.g. newspaper conveyors
    • 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
    • G01N3/02—Details
    • G01N3/04—Chucks
    • 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
    • G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/50—Auxiliary process performed during handling process
    • B65H2301/51—Modifying a characteristic of handled material
    • B65H2301/512—Changing form of handled material
    • B65H2301/5124—Stretching; Tentering
    • B65H2301/51242—Stretching transversely; Tentering
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/17—Nature of material
    • B65H2701/175—Plastic
    • 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

Definitions

  • the present invention relates to a test piece stretching apparatus and a test piece stretching method for stretching a test piece of a film or a sheet.
  • the present invention relates to a test piece stretching apparatus and a test piece stretching method for gripping and stretching a test piece of an original fabric sheet or a test piece of an original fabric film with a clip.
  • a biaxially stretched film manufacturing apparatus is known as an apparatus for continuously producing films for packaging and base materials.
  • various types of stretching machines are employed depending on the raw material and application of the film.
  • Patent Document 1 a raw sheet is stretched in the flow direction by a longitudinal stretching machine, and then a pair of endless tracks formed by rails and sprockets are connected via a chain. It is disclosed that the raw sheet is stretched in the width direction by using an apparatus in which a plurality of clips connected in series and endlessly travel continuously.
  • Patent Document 2 discloses that a plurality of clips that are connected in series and endlessly through a pair of endless tracks formed of rails and sprockets via link members are continuous. It is disclosed that a sheet or film is stretched in the width direction using an apparatus that travels in the direction. Furthermore, it is disclosed that the sheet or film is stretched in the flow direction (running direction) by changing the interval between adjacent clips by opening and closing the link member (link type simultaneous biaxial stretching machine).
  • Patent Document 3 discloses that a change occurs in the gripping pitch of the gripping device in the bent portion of the rail of the stretching machine including the isometric link device.
  • Patent Document 4 discloses that a plurality of clips driven by a linear motor continuously run on a pair of endless tracks formed of rails to make the film wider. Stretching in the direction is disclosed. Furthermore, it is disclosed that the film is stretched in the flow direction (running direction) by changing the interval between adjacent clips (linear simultaneous biaxial stretching machine).
  • Patent Document 5 a film or a sheet is slanted by changing the distance between one track and the other track relative to a pair of endless tracks formed by rails. A method of stretching is disclosed.
  • Patent Document 6 describes a pair of endless tracks formed by rails and sprockets between a clip traveling on one track and a clip traveling on the other track. Discloses an apparatus and a method for stretching a sheet / film obliquely by giving a difference to a position at which pitch expansion starts.
  • a test piece of the original fabric sheet or a test piece of the original fabric film is stretched by a test strip stretching device, and physical properties are evaluated on the test strip (film sample) after stretching.
  • Patent Document 7 JP-A-2009-258571 discloses that a stretched sample is obtained by pulling a film piece before stretching in a uniaxial direction with a tensile tester.
  • Patent Document 8 discloses a biaxial stretching tester that stretches a sheet-like sample biaxially using a link constituting a pantograph mechanism.
  • Patent Document 9 Japanese Patent Application Laid-Open No. 2004-148694 includes a link device, a longitudinal stretching unit, and a lateral stretching unit, and includes a control unit that controls a change time by the longitudinal stretching unit and the lateral stretching unit. Furthermore, a test apparatus for stretching a sheet-like material provided is disclosed.
  • the isometric link of the link device is opened, and the gripping device extends from one end portion of the pair of rails arranged in a divergent shape toward the other end portion, It is intended to realize a stretching test under conditions equivalent to a continuous production state by a stretching machine of a biaxially stretched film manufacturing apparatus.
  • this test apparatus for stretching only the gripping device at the tip reaches the other end, and only the tip of the sheet-like material gripped by the gripping device is completely stretched. And since the front-end
  • the present invention has been made in view of such circumstances, and its purpose is to perform a stretching test under the same conditions as the continuous production state of a film by a stretching machine of a biaxially stretched film manufacturing apparatus, and It is an object of the present invention to provide a test piece stretching apparatus and a test piece stretching method capable of obtaining a film sample exhibiting characteristics equivalent to those of a continuously produced film.
  • the present invention relates to a first rail and a second rail arranged on a track such that a distance between them is wider on the other end side than the one end side, and a group of a plurality of first clips traveling along the first rail. And a group of a plurality of second clips that run along the second rail, and the group of the plurality of first clips and the group of the plurality of second clips are arranged to face each other.
  • the group of the plurality of first clips and the group of the plurality of second clips are in the state of gripping the specimen, respectively, and the first rail and the second rail, respectively.
  • the test piece stretching apparatus is characterized in that the rail can run from one end side to the other end side, and the test piece is stretched in the width direction by the running.
  • the entire test piece (especially the central part of the test piece) is subjected to the stretching process in the width direction, it is continuously produced by evaluating the physical properties of the test piece (sample) after stretching. It is possible to replace the physical property evaluation of the film.
  • the group of the plurality of first clips is configured such that a distance between the plurality of first clips is increased during the traveling, and the group of the plurality of second clips is configured so that the distance between the plurality of first clips is also expanded during the traveling.
  • the test piece is extended in the running direction.
  • test piece since the entire test piece (particularly the central portion of the test piece) is stretched in the running direction, the physical properties of the test piece (sample) after stretching are closer to those of the continuously produced film. It will be a thing.
  • the first rail and the second rail that are spaced apart from each other, the group of first clips that run along the first rail, and the second rail.
  • a group of a plurality of second clips, and the group of the plurality of first clips and the group of the plurality of second clips are arranged to face each other so as to grip a test piece.
  • the one group of the plurality of first clips and the one group of the plurality of second clips respectively hold the test piece and direct the first rail and the second rail from one end side to the other end side, respectively.
  • the group of the plurality of first clips is configured such that a distance between the groups of the first clips is increased during the traveling, and the group of the plurality of second clips is also mutually coupled during the traveling.
  • the interval between Ri is a test strip stretching device, characterized in that thereby the test piece is adapted to extend in the running direction.
  • the entire test piece (particularly the central portion of the test piece) is stretched in the running direction, it is continuously produced by evaluating the physical properties of the test piece (sample) after stretching. It is possible to replace the physical property evaluation of the film.
  • the present invention is a method of extending a test piece using the test piece extending apparatus having any one of the above characteristics, wherein a group of a plurality of first clips and a group of a plurality of second clips are opposed to each other.
  • a test piece stretching method comprising: a step of running and stretching the test piece.
  • the top view which shows the test piece extending
  • FIG. 1 shows a film that can be continuously produced as a result of being subjected to a stretching test under conditions equivalent to a continuous production state by a link-type simultaneous biaxial stretching machine that simultaneously stretches a raw sheet or film in two directions.
  • 1 shows a test piece stretching apparatus 10 according to an embodiment of the present invention that can obtain a film sample having the same physical properties as the above.
  • the vertical direction with respect to the paper surface is the traveling direction (flow direction)
  • the upper side is the upstream side in the traveling direction
  • the lower side is the downstream side in the traveling direction.
  • the right and left direction with respect to the paper surface is the width direction.
  • the test piece stretching apparatus 10 includes a first rail 11 and a second rail 12 that form a pair.
  • the first support device 13 can travel while being guided by the first rail 11, and the second support device 14 can travel while being guided by the second rail 12.
  • a plurality of first clips 16 configured to hold one edge of the test piece 15 are attached to the first support device 13 to form a group 17 of first clips.
  • a plurality of second clips 18 configured to grip the other edge of the test piece 15 are attached to the second support device 14 to form a group 19 of second clips.
  • the first support device 13 is driven by the first drive device 20, so that the group 17 of the first clips travels along the first rail 11.
  • the second support device 14 is driven by the second drive device 21, whereby the group 19 of second clips travels along the second rail 12.
  • a heating device 22 for heating the test piece 15 is provided.
  • the start point S1 In the first rail 11, one end in the longitudinal direction functions as the start point S1, and the other end in the longitudinal direction functions as the end point E1, and in FIG. 1, the start point S1 is arranged upstream in the flow direction.
  • the end point E1 is arranged downstream in the flow direction.
  • the second rail 12 one end in the longitudinal direction functions as the start point S2, and the other end in the longitudinal direction functions as the end point E2.
  • the start point S2 is upstream in the flow direction.
  • the end point E2 is arranged on the downstream side in the flow direction.
  • the first rail 11 and the second rail 12 are configured to be movable in the flow direction and the width direction, respectively. Furthermore, it is possible to adjust (deform) the trajectory (contour) in the longitudinal direction of itself.
  • the first rail is formed so that a section maintaining a predetermined distance Dp is formed between the first rail 11 and the second rail 12 in accordance with the extension test condition of the test piece 15. 11 and the track
  • the first rail 11 and the second rail 12 are arranged with respect to the flow direction center line CL so as to correspond to the stretching test conditions of the test piece 15. Then, between the start point S1 / start point S2 and the end point E1 / end point E2, the preheating section A in which the interval Dp is constant and the interval Dp are enlarged toward the downstream side in order from the upstream side in the flow direction. An extending section B and a heat treatment section C in which the distance Dp is wider and constant than that of the preheating section A are formed. The preheating section A, the stretching section B, and the heat treatment section C are covered with oven-type heating devices 22a, 22b, and 22c, respectively.
  • the preheating section A is a section for preheating the test piece 15.
  • the stretching section B is a section for expanding the distance between the first clip group 17 and the second clip group 19 by expanding the distance Dp and extending the test piece 15 gripped on both side edges in the width direction. It is.
  • the heat treatment section C is a section for stabilizing the physical properties of the film sample 23 formed by stretching the test piece 15.
  • the distance Dp between the first rail 11 and the second rail 12 is determined for each position in the flow direction based on the stretching test condition of the test piece 15 (can be corrected or adjusted). is there).
  • the first support device 13 is configured by connecting a plurality of first link mechanisms 24 in which two links are connected to be openable / closable (rotatable) by one joint.
  • a bearing that rolls while being guided by the first rail 11 is provided on the side of the link tip that opens and closes the first link mechanism 24 (inside of FIG. 1), and the side of the link base end (outside of FIG. 1). Is provided with a bearing that rolls while being guided by a first pitch adjusting rail 25 that is disposed with a distance L1p from the first rail 11.
  • the plurality of first clips 16 are paired with the first link mechanism 24 and attached to the link tip side.
  • the second support device 14 is also configured by connecting a plurality of second link mechanisms 26 in which two links are connected to be openable and closable (rotatable) by one joint.
  • a bearing that rolls while being guided by the second rail 12 is provided on the side of the link tip that opens and closes the second link mechanism 26 (inside of FIG. 1), and the side of the link base end (outside of FIG. 1). Is provided with a bearing that rolls while being guided by a second pitch adjusting rail 27 that is disposed at a distance L2p with respect to the second rail 12.
  • the plurality of second clips 18 are paired with the second link mechanism 26 and attached to the link tip side.
  • the first rail 11 and the second rail 12 have a plurality of rail bases 29 to which a linear rail member 28 is attached to form a track based on the extension test condition of the test piece 15, respectively. It is formed by arranging and fixing on two rail bases 31 and connecting adjacent rail members 28 with a curved rail member 32. The first rail base 30 and the second rail base 31 are placed on the base 33. Thereby, the space
  • the first pitch adjusting rail 25 has a predetermined interval L1p on the side opposite to the second rail 12 with respect to the first rail 11, and the rail members 28 arranged on the rail base 29 are connected to each other by the curved rail member 32. It is formed by connecting.
  • the second pitch adjusting rail 27 has a predetermined interval L2p on the side opposite to the first rail 11 with respect to the second rail 12, and the rail members 28 arranged on the rail base 29 are curved rail members. It is formed by connecting at 32. Therefore, when the first support device 13 and the second support device 14 are disposed on the first rail 11 and the second rail 12, respectively, the first clip 16 and the second clip 18 face the center line CL and face each other. To do.
  • the first link mechanism 24 and the second link mechanism 26 are opened to increase the clip pitch.
  • the test piece 15 held by the first clip 16 and the second clip 18 is also extended in the direction of increasing the clip pitch (vertical direction in FIG. 1: flow direction).
  • the interval L1p and the interval L2p are determined for each position in the flow direction based on the stretching test conditions of the test piece 15 as described above.
  • the interval L1p and the interval L2p are set to gradually decrease toward the downstream side in the extending section B so that the test piece 15 is simultaneously extended in the width direction and the flow direction.
  • the first drive device 20 includes a wire 34 having one end connected to the first support device 13, a drum 35 that winds up the wire 34, and a motor 36 that rotates the drum 35.
  • the drum 35 and the motor 36 are disposed on the downstream side of the first rail base 30.
  • the motor 36 is disposed on the downstream side of the second rail base 31.
  • the second support device 14 By pulling the second support device 14 disposed at the start point S2 to the end point E2 by the second drive device 21, the second support device 14 travels while being guided by the second rail 12 and the second pitch adjustment rail 26. . As a result, the group 18 of second clips travels along the second rail 12.
  • the stretching test can be performed under the same conditions as the continuous production state by the link type simultaneous biaxial stretching machine that simultaneously stretches the original sheet or the original film in two directions. . That is, a film sample equivalent to a film continuously produced by a link type simultaneous biaxial stretching machine can be obtained.
  • a specific procedure of the stretching test by the test piece stretching apparatus 10 will be described below.
  • the tracks of the first rail 11 and the second rail 12 are determined, and the first track is formed so as to form the track.
  • the rail 11 and the second rail 12 are installed (moved). Specifically, the first rail 11 and the second rail 12 are arranged with respect to the center line CL so that the predetermined distance Dp is formed at each position in the flow direction.
  • a setting rail 27 is installed.
  • a stretching section B is set in which the test piece 15 is simultaneously stretched in two directions of the width direction and the flow direction. Specifically, in order to perform stretching in the width direction, the interval Dp is enlarged, and in order to perform stretching in the flow direction by enlarging the clip pitch, the interval L1p and the interval L2p are reduced.
  • a preheating section A is set on the upstream side of the stretching section B, and a heat treatment section C is set on the downstream side of the stretching section B.
  • the starting point S1 of the first rail 11 is set.
  • One edge of the test piece 15 is gripped by the group of first clips 17 arranged, and the other edge of the test piece 15 is gripped by the group of second clips 19 arranged at the starting point S2 of the second rail 12. .
  • the first drive device 20 and the second drive device 21 are operated, and the first support device 13 and the second support device 14 are pulled.
  • the first clip group 17 and the second clip group 19 holding the test piece 15 travel along the first rail 11 and the second rail 12, respectively, and enter the preheating section A. And it pauses there.
  • the preheating section A the test piece 15 is heated to a predetermined preheating temperature by the heating device 22a.
  • the first driving device 20 and the second driving device 21 are operated again.
  • the first clip group 17 and the second clip group 19 that hold the test piece 15 travel along the first rail 11 and the second rail 12, respectively, and are preliminarily set at a predetermined stretching temperature by the heating device 22b. It passes through the stretched section B that has been raised.
  • test piece 15 is stretched in the width direction as the interval Dp increases. At the same time, it is also stretched in the flow direction as the clip pitch increases in accordance with the reduction of the interval L1p and the interval L2p.
  • the entire test piece 15 is extended in the width direction and the flow direction.
  • the first clip group 17 and the second clip group 19 enter the heat treatment section C and temporarily stop there.
  • the film sample 23 formed by stretching the test piece 15 is heated at a predetermined heat treatment temperature by the heating device 22c. Thereby, the physical property is stabilized.
  • the first driving device 20 and the second driving device 21 are operated again. Accordingly, the first clip group 17 and the second clip group 19 holding the sample film 23 arrive at the end point E1 and the end point E2, respectively. Thereafter, the sample film 23 held by the first clip group 17 and the second clip group 19 is taken out.
  • the first support device 13 including the first group of clips 17 and the second support device 14 including the second group of clips 19 are respectively used for the next stretching test. , Removed from the end point E1 and the end point E2, and reattached to the start point S1 and the start point S2.
  • the movement of the first support device 13 and the second support device 14 from the end point E1 and the end point E2 to the start point S1 and the start point S2 may be performed by providing a traction device on the start point S1 and start point S2 side. That is, the first drive device 20 and the second drive device 21 can reciprocate between the first support device 13 and the second support device 14 between the start point S1 and the start point S2, and the end point E1 and the end point E2, respectively. It may be configured.
  • the first clip group 17 and the second clip group 19 holding the test piece 15 are respectively connected to the start point S1 and the start point S2 of the first rail 11 and the second rail 12, respectively. Travel toward the end point E1 and the end point E2. And when passing the extending
  • the first rail group 17 and the second clip group 19 that hold the test piece 15 are configured to be arranged in accordance with the size of the test piece 15 and the first rail 11 and Since only traveling from the start point S1 and the start point S2 of the second rail 12 toward the end point E1 and the end point E2, an efficient extension test is possible.
  • the first rail 11 and the second rail 12 are arranged symmetrically with respect to the center line CL, but this is appropriately selected based on the stretching test conditions of the test piece 15. Therefore, depending on the stretching test conditions, the tracks (length, curvature of the curved portion, etc.) of the first rail 11 and the second rail 12 can be changed as appropriate. For example, by changing the length of the second rail 12 with respect to the first rail 1 and forming a different track without arranging the first rail 11 and the second rail 12 symmetrically, the test piece 15 is formed. It is also possible to perform a test under the condition of extending diagonally. Further, for example, by giving a difference between the position at which the clip pitch of the group 17 of the first clip starts to expand and the position at which the clip pitch of the group 19 of the second clip starts to expand, the test piece 15 is inclined. A test of stretching is possible.
  • a preheating section A and a heat treatment section C are provided before and after the stretching section B, which is also set based on the stretching test conditions of the test piece 15.
  • sections may be added, changed, or omitted.
  • the heating devices 22A, 22B, and 22C can be appropriately changed or replaced in combination.
  • the speed at which the first drive device 20 and the second drive device 21 pull the first support device 13 and the second support device 14 is constant.
  • the traveling speeds of the first clip 16 and the second clip 18 change.
  • the first driving device 20 and the second driving device 21 are temporarily stopped to perform preheating and heat treatment.
  • the time of preheating and heat processing based on the extending
  • the long preheating area and heat processing area of a drawing machine can be reflected, and the extending
  • the movement of the first pitch setting rail 25 and the second pitch setting rail 27 with respect to the second rail 12 can be automated by using a linear motion mechanism combining a ball screw mechanism and a servo motor.
  • the arrangement relationship between the first rail 11 and the second rail 12 and the first pitch setting rail 25 and the second pitch setting rail 27 can be easily changed, and the specimen 15 (that is, the film) in the preheating section A and the heat treatment section C can be obtained. It is possible to adjust the interval Dp, the interval L1p, and the interval L2p so as to cope with thermal deformation such as expansion and contraction of the sample 23).
  • the shape of the first clip 16 and the second clip 18 may be the same or different based on the stretching test conditions.
  • the shapes of the first link mechanism 24 and the second link mechanism 25 may also be the same based on the stretching test conditions, may be symmetric with respect to the center line CL, or may have different shapes.
  • the rail member 28 and the rail base 29 are preferably prepared in various lengths so as to correspond to various tracks of the first rail 11 and the second rail 12 based on the extension test conditions.
  • a plurality of first clips 16 forming a group 17 of first clips and a plurality of second clips 18 forming a group 19 of second clips are respectively the start point S1 and the start point S2 of the first rail 11 and the second rail 12. It is desirable that the number of test specimens 15 to be gripped is the number that can pass through the stretched section B when traveling from the end to the end point E1 and the end point E2.
  • the test piece stretching apparatus 10 capable of performing a stretching test under the same conditions as the continuous production state of the film by the link-type simultaneous biaxial stretching machine has been described, but the first clip 17 includes the first clip group 17.
  • the support device 13 and the second support device 14 including the second group of clips 19 are each constituted by a clip base connected by a chain, and the first rail 11 and the second rail 12 can correspond to the clip base.
  • a test piece stretching apparatus that can perform a stretching test under the same conditions as in a continuous production state using a horizontal stretching machine.
  • stretching apparatus which can perform an extending

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Abstract

L'invention porte sur un dispositif pour étirer une éprouvette et sur un procédé pour étirer celle-ci, par lesquels une éprouvette d'un film ou d'une feuille est étirée. Il est décrit de façon spécifique un dispositif pour étirer une éprouvette, lequel dispositif comporte un premier rail et un second rail, qui sont disposés sur une piste, de telle sorte que la distance mutuelle est plus large sur l'autre côté d'extrémité que sur le premier côté, et un groupe d'une pluralité de premières attaches qui se déplacent le long du premier rail, et un groupe d'une pluralité de secondes attaches qui se déplacent le long du second rail. Le groupe de la pluralité de premières attaches et le groupe de la pluralité de secondes attaches sont disposés de façon à se faire mutuellement face, et sont aptes à saisir les éprouvettes. Le groupe de la pluralité de premières attaches et le groupe de la pluralité de secondes attaches sont aptes à parcourir le premier rail et le second rail à partir du premier côté d'extrémité vers l'autre côté d'extrémité avec les éprouvettes qui sont saisies, respectivement, les éprouvettes étant aptes à être étirées vers la direction de la largeur par le déplacement.
PCT/JP2011/060590 2010-05-19 2011-05-06 Dispositif pour étirer une éprouvette et procédé pour étirer celle-ci WO2011145459A1 (fr)

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CN102848568A (zh) * 2012-09-21 2013-01-02 青岛顺德塑料机械有限公司 Bopva双向拉伸片材外置式导轨系统
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JP5950895B2 (ja) * 2013-12-13 2016-07-13 ヒラノ技研工業株式会社 フィルム延伸装置
CN113352587A (zh) * 2021-07-09 2021-09-07 汕头东风印刷股份有限公司 一种薄膜拉伸机
JP7079365B1 (ja) * 2021-09-28 2022-06-01 日東電工株式会社 延伸フィルムの製造方法、光学積層体の製造方法およびフィルム延伸装置

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CN102893139B (zh) 2016-04-20
JP2011240621A (ja) 2011-12-01
TW201202005A (en) 2012-01-16
KR20130079444A (ko) 2013-07-10
TWI510353B (zh) 2015-12-01
DE112011101680T5 (de) 2013-05-08
CN102893139A (zh) 2013-01-23
JP5587668B2 (ja) 2014-09-10
KR101764946B1 (ko) 2017-08-03

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