JP5461276B2 - Containment method - Google Patents

Description

  The present invention relates to a transportation method, and in particular, has at least one sheet-like member having a concave property, and two adhesive materials having the same thickness applied to one side of the member, and adjacent adhesive materials The present invention relates to an accommodation method for accommodating objects to be accommodated that are connected at a linear connection portion between end portions in a container having at least one partition wall and a storage portion that is disposed on both sides of the partition wall and has a curved bottom portion.

  Conventionally, when carrying or storing luggage (contained items), the contained items are accommodated in various containers and packed. At the time of packing, in order to avoid damage to the objects to be accommodated due to shaking or vibration, a shock absorbing material having a foaming plastic, a cushioning material such as sponge, a honeycomb structure, or the like is used.

  When the material to be stored is a sheet-like film or paper, it can be packed in a laminated state if it is a certain size. On the other hand, in the case of a long or large sheet-shaped object, it is wound into a roll and stored in a container for the purpose of improving workability during packing and unpacking and reducing the packing size. Is common. When a wound film or the like is stored so as to come into contact with the inner surface of the container, the surface of the film or the like that is in contact with the inner surface of the container is damaged due to shaking, impact, the weight of the object to be stored, etc. There is a possibility of deforming the containment itself. If a cushioning material or the like is used to avoid these, the surface of the film or the like may be damaged by contact with the cushioning material or the like.

  In addition, in the case of a wound object, winding slack or end face displacement occurs, so it is necessary to fix the container in the container. If a winding core is used during winding, both ends of the winding core can be fixed in the container. For example, a technique is disclosed in which a holder is held on opposing inner wall surfaces of a container and a holder is supported by the holder so that an object to be stored does not directly contact the container (see Patent Document 1). However, with this technique, a winding core is used at the time of winding. Therefore, this technique cannot be applied when the winding core is not used, requiring time and effort for holding the holder in the container, and reducing the number of parts for packing. Will be increased. On the other hand, as a container of a large or long object to be contained that is soft in material and dislikes winding of the core, for example, a flexible sheet material is installed in the container, and the slack portion A technique for stacking rolls is disclosed (see Patent Document 2).

  On the other hand, for example, a polishing cloth or holding pad used in polishing processing for flattening the surface of an object to be polished such as a glass substrate for a liquid crystal display (LCD) or a silicon wafer for a semiconductor device is deformed by an external force. Soft materials that are easy to receive are used. In order to improve the flatness of the object to be polished, the flatness of the surface of the polishing cloth and the holding pad is important. For this reason, in the polishing cloth and the holding pad, even when being wound at the time of transportation or storage, the winding core is generally not used because it dislikes the burning. In addition, a polishing cloth or the like wound in a state where there is no winding core has a problem that a concave shape (dent) is likely to occur due to external force or due to its own weight, and the wound shape tends to collapse. When the wound shape collapses, the flatness of the polishing cloth or the like is lost, and a wound trace is left, so that the object to be polished that is subject to polishing may not be sufficiently planarized. When such abrasive cloth is transported or stored, the technique of Patent Document 2 can avoid the problem of the occurrence of recesses.

JP 2006-103785 A JP 2009-137644 A

  However, for example, glass substrates, which are constituent materials of LCDs, have been increasing in size year by year for the purpose of improving LCD productivity, and large glass substrates with a side approaching 3 m have been used. The holding pad used at the time of polishing processing in the manufacture of such a glass substrate also needs to be enlarged in accordance with the size change of the glass substrate, but with a double-sided tape for mounting the holding pad on the surface plate of the polishing machine Size support is already difficult. For this reason, what connected two sheets of the same kind double-sided tape with respect to the resin-made sheet material used in order to hold | maintain a glass substrate on a surface plate is used. In the case of such an object to be transported, since the connection location comes into contact with another location of the holding pad when wound in a roll shape, it is difficult to avoid the problem of indentation even with the technique of Patent Document 2. . That is, since its own weight and external force are applied during transportation, there is a problem that the sheet material having the concave property of the holding pad located on the inner periphery or outer periphery of the connection portion is damaged, resulting in poor quality.

  This invention makes it a subject to provide the accommodation method which can be accommodated in a container, without generating a recess in a to-be-contained object in view of the said case.

  In order to solve the above-mentioned problems, the present invention includes at least one sheet-like member having a concave property and two adhesive materials having the same thickness attached to one surface side of the member. In order to accommodate the objects to be accommodated in which the mating adhesive material is connected at the linear connection portion between the end portions in a container having at least one partition wall and a storage portion that is disposed on both sides of the partition wall and has a curved bottom portion. A winding part forming step of winding the object to be stored from both outer edge parts toward the connecting portion to form two wound parts, and an upper end part of the partition wall of the container. A positioning step for positioning the connection location of the object in which the winding portion is formed in the winding portion forming step, and a winding portion on both sides of the connection location positioned at the upper end of the partition wall in the positioning step. Are arranged on both sides of the partition wall, respectively The placing in the housing portion into the container, characterized in that it comprises a housing step of housing the contained object, the.

  In the present invention, in order to position the connection location of the adhesive material affixed to the sheet-like member having the recess in the upper end portion of the partition wall in the alignment step, the connection location is not wound around each winding portion, Each winding part is supported along the lower side by being positioned on the partition wall without contacting the member and by placing each winding part on a receiving part that is arranged on both sides of the partition wall and has a curved bottom. Therefore, even if shaking, vibration, or its own weight is applied, the object can be accommodated without causing a recess.

In this case, it is also possible to place the wound portion of the object to be accommodated in the accommodating portion so that it can be unwound until the entire lower surface is in surface contact with the accommodating portion in the accommodating step. The container accommodating portion may be made of a non-stretchable resin and a surface having a flat surface. The accommodating part can be formed such that the lower surface of the bottom part is separated from the inner bottom surface of the container, and the object to be accommodated is located below the upper end of the container. The object to be accommodated can be a holding pad used for polishing.

  According to the present invention, in order to position the connection location of the adhesive material affixed to the sheet-like member having a recess in the upper end portion of the partition wall in the alignment step, the connection location is not wound around each winding portion and is accommodated. Each winding part is positioned along the lower side by placing each winding part on a receiving part that is positioned on both sides of the partition wall and has a curved bottom. Since it is supported, it is possible to obtain an effect that the object can be accommodated without causing a recess even if shake, vibration, or its own weight is applied.

It is sectional drawing which shows typically the cross section of the direction which cross | intersects the longitudinal direction of the container of embodiment to which this invention is applied. It is sectional drawing which shows typically the holding pad which is a to-be-contained object accommodated in the container of embodiment, and which affixed two double-sided tapes on the polyurethane sheet of 1 sheet. It is sectional drawing which shows typically the holding pad which is the to-be-contained object of another aspect, and the two double-sided tapes were each affixed on the two polyurethane sheets. It is process drawing which shows the outline of the method of accommodating a to-be-contained object in a container.

  Hereinafter, with reference to the drawings, an embodiment of a container for accommodating a holding pad for holding an object to be polished by applying the present invention will be described.

(container)
As shown in FIG. 1, the container 10 of this embodiment is formed in the rectangular box shape which can accommodate the holding pad 30 as a to-be-contained object which adhered the double-sided tape of 2 sheets to the polyurethane sheet of 1 sheet. . The container 10 is formed of a flat paper material and has two outer walls 1 along the longitudinal direction (direction intersecting the paper surface in FIG. 1). In the container 10, two partition walls 2 a having a height smaller than the outer wall 1 and one partition wall 2 b having the same height as the outer wall 1 are disposed so as to face the outer wall 1. The two outer walls 1, the two partition walls 2a, and the one partition wall 2b are alternately different in height in a direction intersecting with the longitudinal direction of the container 10 (left-right direction in FIG. 1, hereinafter referred to as a width direction). Has been placed. That is, the outer wall 1, the partition 2a, the partition 2b, the partition 2a, and the outer wall 1 are arranged in this order. The partition walls 2 a and 2 b are arranged at substantially equal intervals in the width direction of the container 10.

  In the container 10, a single flexible film 3 is stretched between the outer walls 1 on both outer sides. The film 3 has a slack portion 4 as a curved accommodating portion between the adjacent outer wall 1 and the partition wall 2a and between the adjacent partition wall 2a and the partition wall 2b. That is, in the container 10, the slack portions 4 are formed at four locations, and a total of two holding pads 30 can be accommodated, one on each side of the partition 2b. The film 3 is stretched so that the upper end of the holding pad 30 is positioned below the upper ends of the outer wall 1 and the partition wall 2b when the holding pad 30 is placed. In other words, the height of the outer wall 1 and the partition wall 2b (depth of the container 10) is larger than the outer diameter of the wound portions 20a and 20b of the wound holding pad 30.

  Further, the slack portion 4 of the film 3 has a lower surface separated from the inner bottom surface of the container 10. The film 3 is fixed to the upper end portions of the partition walls 2a and 2b by a double-sided tape or the like, which is not shown in the drawing, at portions located at the upper end portions of the partition walls 2a and 2b. The film 3 is made of a non-stretchable resin material and has a rectangular shape. In this example, a film made of polyethylene terephthalate (hereinafter abbreviated as PET) is used as the film 3, and the thickness of the film 3 is set to about 0.02 to 2.0 mm. The film 3 has a flat surface at least in contact with the holding pad 30.

(Containment)
The holding pad 30 is used, for example, to hold the object to be polished on a surface plate of a polishing apparatus when polishing the surface of the object to be polished such as a glass substrate for a liquid crystal display. As shown in FIG. 2, in the holding pad 30, in order to hold a glass substrate or the like that tends to increase in size, the ends of two double-sided tapes 26 having the same thickness with respect to one polyurethane sheet 22 Are attached so as to be connected at a linear connecting portion 15 adjacent to each other. That is, the holding pad 30 is formed of a polyurethane resin-made polyurethane sheet 22 and a double-sided tape 26 to be attached to the polishing apparatus, and on the opposite side of the two double-sided tapes 26 to the polyurethane sheet 22 Release paper 27 is provided for each (details will be described later).

  The holding pad 30 has a polyurethane sheet 22 formed of a polyurethane resin having a 100% modulus (tension when pulled twice) of 20 MPa or less. By setting the 100% modulus to 20 MPa or less, the polyurethane sheet 22 is in close contact with the wet-formed resin so as to match the shape of the object to be polished. Recesses (dents) are more likely to occur when receiving or by its own weight. The polyurethane sheet 22 has a holding surface P that comes into contact with the object to be polished when the object to be polished is held on the surface plate. In this example, the thickness of the polyurethane sheet 22 (the length in the vertical direction in FIG. 2) is uniform on the side opposite to the holding surface P of the polyurethane sheet 22 (the lower surface in FIG. 2; hereinafter referred to as the back surface). Buffing is applied so that For this reason, the holding surface P of the polyurethane sheet 22 becomes substantially flat.

  A skin layer 24 having a surface flatness is formed on the polyurethane sheet 22 on the holding surface P side by a wet film forming method. On the lower side of the skin layer 24 (inside the skin layer 24 of the polyurethane sheet 22), a foam 23 having a triangular cross section rounded along the thickness direction of the polyurethane sheet 22 is formed. The foam 23 is formed so that the size on the holding surface P side is smaller than that on the back surface side. That is, the diameter of the foam 23 is reduced on the holding surface P side than on the back surface side. The foam 23 has variations in the length of the polyurethane sheet 22 in the thickness direction. The polyurethane resin between the foams 23 is formed in a microporous shape in which micropores (not shown) having a pore diameter smaller than that of the foams 23 are continuously formed. The holding pad 30 has the other side of the double-sided tape 26 having the release paper 27 on one side (the lowermost side in FIG. 2) on the back side (the buffed side). The double-sided tape 26 has a base material 26a made of PET film, and an adhesive layer 26b is formed on both sides of the base material 26a. In this example, the base material 26a also functions to support the holding pad 30. Moreover, in this example, since the back surface side is buffed, the foam 23 is perforated on the surface on the back surface side.

  At the time of producing the holding pad 30, the adhesive layer 26b is provided on the other side of the double-sided tape 26 with the release paper 27 attached to one side of the polyurethane sheet 22 formed by a wet film forming method and wound in a roll shape. Are pasted together. That is, two rows of double-sided tape 26 drawn from two rolls are bonded to one row of polyurethane sheets 22 drawn from one roll. At this time, the alignment is performed so that the two rows of the double-sided tapes 26 are not overlapped, that is, the end surfaces are connected to each other at the linear connecting portion 15. Then, the holding pad 30 is manufactured by cutting into a desired rectangular shape.

(Containment in container)
When the obtained holding pad 30 is stored and transported, it is accommodated in the container 10 described above. As shown in FIG. 4, the accommodation procedure includes a winding part forming step of forming two winding parts 20 a and 20 b in the holding pad 30, and a position where the connection location 15 of the holding pad 30 is positioned in the partition wall 2 a of the container 10. The alignment step and the accommodation step of placing the two wound portions 20a and 20b of the holding pad 30 on the slack portion 4 and accommodating the holding pad 30 in the container 10 are performed. Hereinafter, it demonstrates in order of a process.

  In the wound part forming step, the holding pad 30 is wound from both outer edge parts toward the connecting portion 15 to form two wound parts 20a and 20b. Although each winding part 20a, 20b depends on the size of the holding pad 30, it is formed in a roll shape wound 3 to 20 times, preferably 5 to 10 times. At this time, in order not to damage the holding surface P, the holding surface P is used as an inner side without using a winding core, and the inner surface has a diameter of about 100 to 200 mm, preferably 120 to 180 mm. If the inner diameter is smaller than 100 mm, winding traces are formed and the performance of the holding pad is impaired. On the contrary, if it exceeds 200 mm, the volume becomes large, so that the efficiency in storage and transportation decreases. A tape or the like may be affixed to the winding end portion so as not to be rolled back or torn apart. Since the polyurethane sheet 22 of the holding pad 30 has a recess property, if it is placed on a transporting device as it is without using the film 3, a recess is easily generated when an external force is applied or by its own weight.

  In the alignment step, the connecting portion 15 is positioned at the upper end portion of the partition wall 2a of the container 10. That is, the linear connection part 15 is mounted on the partition 2a. Next, in the accommodation step, the two wound portions 20a and 20b are placed on the slack portions 4 of the film 3 located on both sides of the partition wall 2a where the connection location 15 is positioned. At this time, when tape or the like is not attached to the winding terminal portion, the winding portions 20a and 20b can be placed so that they can be unwound. In other words, since the holding pad 30 is wound from both outer edge portions toward the connecting portion 15, the outer edge portion is wound inside the winding portions 20 a and 20 b, so that a tape or the like is attached to the winding end portion. Even if it does not, it can mount and accommodate so that the winding parts 20a and 20b can be unwound. The holding pad 30 can be transported in the state accommodated in the container 10 and can be stored as it is.

(Action etc.)
Next, the effect | action etc. of the container 10 of this embodiment and the accommodation method of the holding pad 30 to the container 10 are demonstrated.

  In the container 10 of the present embodiment, the film 3 is stretched between the outer walls 1, and the film 3 is slack between the adjacent outer wall 1 and the partition wall 2a and between the adjacent partition wall 2a and the partition wall 2b. 4. For this reason, when accommodating the holding pad 30 having a recess, the connecting portion 15 is positioned on the partition wall 2a in the alignment step, and the two wound portions 20a and 20b are respectively placed on the slack portions 4 in the accommodation step. be able to. For this reason, in the positioning step, the connecting portion 15 can be positioned on the partition wall 2a without being wound around the winding portions 20a and 20b. Since the release paper 27 is affixed to the polyurethane sheet 22 so that the release paper 27 is adjacent to the connection location 15, when the holding pad 30 is formed in a single roll shape with the connection location 15 entrapped, a step between the adjacent double-sided tapes 26 is formed. Is in contact with the polyurethane sheet 22 of the holding pad 30 located on the outer peripheral side or the inner peripheral side, so that the holding pad 30 may be recessed. By positioning the connecting portion 15 on the partition wall 2a, it is possible to avoid the occurrence of a recess due to the connecting portion 15. Further, at the time of storage and transportation, the wound portions 20a and 20b of the holding pad 30 are supported by the film 3 along the outer periphery on the lower side (the bottom side of the container 10). In other words, the entire lower surface side of the winding portions 20 a and 20 b is supported in a surface contact state in contact with the film 3. For this reason, the weight of the holding pad 30 is applied during storage, and the occurrence of the depression of the holding pad 30 can be suppressed even if shaking or vibration (rolling or pitch) is applied during transportation.

  In addition, since the holding pad 30 is used to hold an object to be polished at the time of polishing, it is damaged during transportation, or the wound shape collapses and the holding surface P is wound. This impairs the flatness of the object to be polished. In the container 10 of the present embodiment, the slack portion 4 of the film 3 is separated from the inner bottom surface, and the upper end of the holding pad 30, that is, the upper ends of the winding portions 20a and 20b and the connecting portion 15 are the upper ends of the outer wall 1 and the partition 2b. The film 3 is stretched over the lower side. For this reason, the winding portions 20 a and 20 b placed on the slack portion 4 are in a suspended state so as to follow the bending of the film 3 at positions where they do not come into contact with the inner wall surface and the inner bottom surface of the container 10. Accordingly, since the holding pad 30 is stored or transported while being supported by surface contact with the film 3 without directly contacting the inner wall surface or inner bottom surface of the container 10, damage to the holding pad 30 is caused even if shaking is applied. Further, the flatness of the holding pad 30 (holding surface P) can be secured by suppressing the collapse of the wound shape.

  Furthermore, in the container 10 of this embodiment, the film 3 is spanned between the outer walls 1 formed of a flat paper material. For this reason, compared with the case where a core fixing member or the like is incorporated in a container in order to accommodate an object wound using the core, the core is more susceptible to deformation due to external force or its own weight. Thus, the container for accommodating the object to be wound is configured with a small number of parts, and the structure of the container 10 can be simplified. In the case of the holding pad 30 or a polishing cloth used for polishing, for example, a single sheet having a rectangular side and a circular diameter of up to about 1000 mm can be packed in a stacked state. On the other hand, for example, in the case of a rectangular shape with one side exceeding 1400 mm or a circular shape with a diameter exceeding 1400 mm, packing in a stacked state takes time and labor during packing or transportation. Furthermore, in the case of a rectangular holding pad having a side of 3000 mm, two double-sided tapes 26 are bonded to one polyurethane sheet 22 having a holding surface P in order to accommodate the size of the double-sided tape 26. . When such a holding pad is wound into a single roll, a recess due to the connected portion may occur. On the other hand, in the container 10 of the present embodiment, the connecting portion 15 is positioned on the partition wall 2a, and the two wound portions 20a and 20b are placed on the slack portion 4 so that it can be accommodated and packed. It can be suitably used when accommodating an object such as the holding pad 30.

  In the present embodiment, a flat paper material is exemplified as the material of the container 10, but the present invention is not limited to this, and for example, a resin material or a metal material may be used in addition to the paper material. Is possible. In consideration of repeated use, it is advantageous to use a resin material. Further, in the present embodiment, an example in which the container 10 is formed in a rectangular box shape is shown, but the present invention is not limited to this, and the outer wall 1 and the partition walls 2a and 2b are arranged at substantially equal intervals. Good.

  Moreover, in this embodiment, although the film made from PET was illustrated as the film 3, this invention is not limited to this, The bottom part should just be formed in curve shape. In other words, it is only necessary that the surface is made flat with a non-stretchable material having a certain degree of strength so as not to be deformed when the object to be transported is placed and accommodated in the slack portion 4. If the surface of the film 3 is uneven, it is not preferable because it may cause a recess in the object. Examples of the material of the film 3 include resins such as nylon and polyester. On the other hand, if the thickness of the film 3 is less than 0.02 mm, the film 3 itself may be damaged due to shaking during transportation. On the contrary, if the thickness exceeds 2.0 mm, it becomes difficult to softly support the object to be transported. For this reason, it is preferable that the thickness of the film 3 is 0.02 to 2.0 mm.

  Furthermore, although not specifically mentioned in the present embodiment, the upper part of the container 10 may be covered with a lid. In this case, the lid member may be a separate member and placed on the upper side of the container 10, or the container 1 and the lid member may be integrally formed. In this way, foreign matters can be prevented from being mixed in from the outside during transport and the like, and consequently, foreign matters can be prevented from adhering to the object to be accommodated such as the holding pad 30. The shape of the lid member is not particularly limited as long as it can cover the container 10. For example, the lid member may be formed in a flat plate shape so as to contact the upper end portions of the outer wall 1 and the partition wall 2b.

  Furthermore, in this embodiment, although the example in which the container 10 has the two partition walls 2a and the one partition wall 2b is shown, the present invention is not limited to these numbers. For example, you may arrange | position the 3 partition 2a and the 2 partition 2b so that height may differ alternately. In this way, the container 10 of the present embodiment can accommodate the two holding pads 30, whereas the container 10 of the present embodiment can accommodate the three holding pads 30. On the contrary, one partition 2a may be provided. In this case, the holding pads 30 can be accommodated one by one. Further, in the present embodiment, an example in which the height of the partition wall 2b is made larger than that of the partition wall 2a is shown, but only the partition wall 2a may be arranged without using the partition wall 2b, and the upper end of the holding pad 30 is higher than the outer wall 1. It only needs to be located on the lower side. In the present embodiment, the partition 2b has the same height as the outer wall 1a. However, the present invention is not limited to this, and the partition 2a, 2b has a smaller height than the outer wall 1a. Just do it.

  Furthermore, in the present embodiment, the holding pad 30 in which one polyurethane sheet 22 and two double-sided tapes 26 are bonded as an object to be contained is illustrated, but the present invention is not limited to this. It can be suitably used for accommodating an object to be stored in which at least one member having a concave property is connected. For example, as shown in FIG. 3, holding pads 30 a and 30 b each having a double-sided tape 26 bonded to polyurethane sheets 22 a and 22 b formed in the same manner as the polyurethane sheet 22 except for different sizes are connected by connecting members 18. It is also possible to apply to the object 40. The connecting member 18 may be in the form of a tape and is not particularly limited. In this case, the connecting member 18 may be positioned on the partition wall 2a. Moreover, as a to-be-contained object, the polishing cloth for grind | polishing the to-be-polished object which has a resin-made film, a nonwoven fabric, etc. other than a holding pad can be mentioned, for example. In the present embodiment, an example in which the holding pad 30 includes the polyurethane sheet 22 and the double-sided tape 26 manufactured by the wet film forming method has been described, but the present invention is not limited to this. For example, you may have the resin sheet produced by the dry process. Further, the material of the holding pad and the polishing cloth and the internal foam structure are not particularly limited. Furthermore, in the present embodiment, an example in which the holding surface P is set to the inner side when the holding pad 30 is wound is shown, but the present invention is not limited to this, and the holding surface P may be set to the outer side. Good.

  In the present embodiment, the example in which the polyurethane sheet 22 having the back surface subjected to the buff treatment is used for the holding pad 30 is shown, but the present invention is not limited to this. For example, a polyurethane sheet formed by a wet film forming method without performing buffing may be bonded to the double-sided tape 26.

  The present invention provides an accommodation method that can be accommodated in a container without causing a recess in the object to be accommodated, and thus contributes to the manufacture and sale of the container, and thus has industrial applicability.

2a, 2b Bulkhead 4 Slack part (accommodating part)
DESCRIPTION OF SYMBOLS 10 Container 15 Connection location 20a, 20b Winding part 22 Polyurethane sheet (member)
26 Double-sided adhesive tape
30 Holding pad (container)

Claims (5)

It has at least one sheet-like member having indentation properties, and two sticking materials having the same thickness stuck on one surface side of the member, and the adjacent sticking materials are in a straight line shape between end portions. An accommodation method for accommodating objects to be accommodated connected at a connection location in a container having at least one partition wall and a storage section disposed on both sides of the partition wall and having a curved bottom.
A wound part forming step of winding the object to be stored from both outer edge parts toward the connection location to form two wound parts;
An alignment step for positioning the connection part of the object in which the winding part is formed in the winding part forming step at the upper end of the partition wall of the container;
An accommodating step of placing the wound parts on both sides of the connection location positioned at the upper end of the partition wall in the alignment step on the accommodating parts disposed on both sides of the partition wall, and accommodating the object to be stored in the container. When,
A containment method comprising: 2. In the accommodation step, the wound portion of the object to be stored is placed on the accommodation portion so that the entire lower surface can be unwound until the entire lower surface is in surface contact with the accommodation portion. The housing method described in 1.   The container according to claim 1, wherein the container is made of a sheet material having a non-stretchable resin and a flat surface.   The said accommodating part is formed so that a bottom part may be separated from the inner bottom face of the said container, and the said to-be-contained object may be located below the upper end of the said container. Containment method.   The accommodation method according to claim 1, wherein the object is a holding pad used for polishing.

Images