WO2006064577A1 - 中空体とシート構造体、およびこれらの製造方法 - Google Patents
中空体とシート構造体、およびこれらの製造方法 Download PDFInfo
- Publication number
- WO2006064577A1 WO2006064577A1 PCT/JP2005/003357 JP2005003357W WO2006064577A1 WO 2006064577 A1 WO2006064577 A1 WO 2006064577A1 JP 2005003357 W JP2005003357 W JP 2005003357W WO 2006064577 A1 WO2006064577 A1 WO 2006064577A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- sheet
- hollow
- joined
- forming member
- central region
- Prior art date
Links
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-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2439/00—Containers; Receptacles
- B32B2439/40—Closed containers
- B32B2439/46—Bags
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2597/00—Tubular articles, e.g. hoses, pipes
Definitions
- the present invention relates to a hollow body, a sheet structure, and a method for producing the same, and particularly to a hollow body and a sheet structure that are excellent in strength and can be produced at low production cost and in a small space, and methods for producing these.
- the purpose is to provide.
- a hollow body for flowing a fluid and a hollow body used as a material for manufacturing a bag body have been manufactured by an inflation method.
- a thermoplastic resin is filled in an extruder provided with a cylindrical die (annular die), and the thermoplastic resin is extruded through the annular die from the extruder and the precursor hollow.
- a hollow body having a desired size is continuously produced while air is blown into the hollow portion of the precursor hollow body to be expanded.
- this inflation method can efficiently produce a hollow body, it is widely used in the production of hollow bodies, and the hollow body produced by the inflation method is relatively easy to use. Widely used in applications for flowing and transporting fluid in hollow parts, and for use as a bag material.
- thermoplastic resin is filled in an extruder provided with a T-shaped die (T-die), and the thermoplastic resin is extruded through the T-die from the extruder and the sheet structure. Get body (T-die extrusion). Then, when the two sheet structures are overlapped in the vertical direction with the two side edges facing each other, and the two side edges of each sheet structure are joined, the two sheet structures are formed. A hollow body in which a hollow portion is formed can be produced.
- hollow bodies produced by the T-die extrusion method are also used for various applications.
- the sheet structure obtained by the T-die extrusion method is joined widely in a state where two sheets are overlapped to form a hollow body, and the sheet structure remains widely used for various applications. Yes.
- Patent Document 1 A technique related to the inflation method is disclosed, for example, in Patent Document 1 shown below.
- Patent Document 2 a technique related to the vertical die extrusion method is disclosed in, for example, Patent Document 2 shown below.
- Patent Document 1 Japanese Patent Laid-Open No. 5-200862
- Patent Document 2 JP 2000-326391 A
- the inflation method is produced by inflating a precursor hollow body extruded by air, the produced hollow body is improved in strength by improvement of a material having a thin film thickness.
- plan There is a limit to plan Therefore, there is a limit to the improvement of strength by improving the material with a thin film thickness, even if the hollow body is cut into a single sheet body.
- the size of the sheet structure manufactured by the saddle die depends on the size of the saddle die. Therefore, in order to manufacture a sheet structure having a large width dimension, a large die that is almost the same as the width dimension of the sheet structure to be manufactured is required, so that it is difficult to increase the manufacturing cost and secure the manufacturing space. become.
- the present invention is for solving the above-described conventional problems, and can improve the strength, and can be manufactured at a low manufacturing cost and in a small space, and a hollow body and a sheet structure, and It aims at providing the manufacturing method of.
- the hollow body of the present invention is provided between the first sheet, the second sheet positioned below the first sheet, and the first sheet and the second sheet.
- the first sheet and the second sheet are formed in a central region formed with the same width as the hollow portion forming member and on both sides of the central region. Side area and Each has
- An upper surface of the hollow portion forming member is joined to a central region formed on the first sheet, and a lower surface of the hollow portion forming member is joined to a central region formed on the second sheet, The lateral region formed in the first sheet is joined to the lateral region formed in the second sheet;
- a hollow portion having openings at the front end and the rear end is formed by the hollow portion forming member and the central region of the first sheet and the second sheet.
- the first sheet and the second sheet are joined above and below the hollow part forming member. Therefore, since the hollow part forming member is reinforced by the first sheet and the second sheet, the strength of the hollow body can be improved.
- a plurality of the hollow portion forming members are provided at a predetermined interval in the width direction, and the hollow portion forming member and the central region of the first sheet and the second sheet, It can be configured as a plurality of hollow portions having openings at the front end and the rear end.
- the hollow body has two hollow portions, for example, when the hollow body is used as a hose, different objects to be conveyed are used in the two hollow portions. It can be transported. In addition, when used as a bag body, it becomes possible to pack different items to be packed between the two hollow portions.
- the hollow portion forming member can be configured as a hollow tube.
- the hollow portion forming member can be configured as two sheets stacked one above the other.
- the hollow portion forming member may be a folded sheet body formed by bending a single sheet body by a center line that bisects the sheet body in the width direction.
- the sheet structure of the present invention includes a lower layer sheet and an upper layer sheet bonded onto the lower sheet, and the upper layer sheet includes a first sheet half and a second sheet half. Are arranged side by side in the width direction and the inner end region of the first sheet half and the second sheet The inner end region of the half body is joined to the upper surface of the lower layer sheet in a state of being bent upward, and this joined portion is formed continuously from the front end to the rear end. It is a characteristic.
- the upper layer sheet is bonded onto the lower layer sheet. Therefore, since the lower layer sheet is reinforced by the upper layer sheet, the strength of the lower layer sheet can be improved.
- the lower layer sheet can be configured by forming two lower layer sheet halves arranged side by side in the width direction.
- the method for producing a hollow body of the present invention is characterized by having the following steps.
- step (a) a plurality of the hollow portion forming members are arranged at predetermined intervals in the width direction, and the upper surface of the plurality of hollow portion forming members and the central region of the first sheet are arranged.
- step (b) the lower surface of the plurality of hollow part forming members and the central region of the second sheet can be joined.
- the first sheet and the first sheet are formed above and below the hollow portion forming member.
- the hollow sheet forming member can be reinforced by the first sheet and the second sheet by joining the two sheets. Therefore, a hollow body with improved strength can be produced.
- the hollow part forming member in the step (a), can be formed of a hollow tube.
- the hollow portion forming member is made up of two sheets stacked one above the other. It can be configured to form.
- the hollow portion forming member is formed of a folded sheet formed by bending a single sheet body along a center line that divides the sheet body into two in the width direction. You can do it.
- step (a) and the step (b) may be performed simultaneously.
- the method for producing a sheet structure of the present invention includes the following steps.
- a sheet structure having a large width can be produced simply by cutting the hollow body.
- step (1) (f) a step of opening the cut end faces cut along the cutting line by force in directions away from each other can be configured.
- the hollow part forming member in the step (c), can be formed as a hollow tube.
- the hollow portion forming member can be formed of two sheets that are stacked one above the other.
- the hollow portion forming member is divided into two sheets in the width direction of one sheet body.
- the sheet may be formed of a bent sheet formed by being bent at the center line.
- step (c) and the step (d) may be performed simultaneously.
- the first sheet and the second sheet are joined to the top and bottom of the hollow part forming member. Therefore, since the hollow part forming member is reinforced by the first sheet and the second sheet, the strength of the hollow body can be improved.
- the upper layer sheet is bonded onto the lower layer sheet. Therefore, since the lower layer sheet is reinforced by the upper layer sheet, the strength of the lower layer sheet can be improved.
- the first sheet and the second sheet are joined to the top and bottom of the hollow part forming member, and the hollow part forming member is attached to the first sheet and the first sheet.
- a sheet structure having a large width dimension can be produced simply by cutting and opening the hollow body.
- FIG. 1 is a perspective view showing a first embodiment of the hollow body of the present invention.
- the hollow body 1 has a width dimension having a predetermined interval in the XI-X2 direction shown in the drawing, and is continuously extended in the Y1-Y2 direction shown in the drawing.
- the Y1-Y2 direction shown in the drawing is the longitudinal direction
- the XI-X2 direction shown is the width direction.
- the hollow body 1 includes a hollow portion 2 and joint portions 3a and 3b.
- the hollow portion 2 extends in the longitudinal direction of the hollow body 1, and the front end 2a is formed as an open end having an opening 4a.
- the hollow portion 2 has an open rear end 2b. It is formed as an open end having a portion 4b.
- the joint portions 3a and 3b are formed on both sides of the hollow portion 2, respectively, and have a predetermined width dimension and extend in the longitudinal direction.
- FIG. 2 is an exploded perspective view of the hollow body 1.
- the hollow body 1 includes a first sheet 5, a second sheet 6 positioned on the lower side (Z2 direction side in the drawing) of the first sheet 5, and the first sheet. 5 and a hollow tube 7 interposed between the second sheet 6 and the second sheet 6.
- the tube 7 constitutes a hollow part forming member of the hollow body 1 shown in FIG. 1 and FIG.
- the planar shape seen from the upper side (Z1 direction side in the drawing) of the first sheet 5 has a dimension (width dimension) W1 in the width direction and extends in the longitudinal direction. It is formed as a rectangle.
- the planar shape of the second sheet 6 as viewed from above is also formed as a rectangle having a width dimension W2 and extending in the longitudinal direction.
- the tube 7 has a cylindrical shape extending in the longitudinal direction (Y1-Y2 direction in the figure) and has a seam or the like, and is formed in a single-piece structure.
- the tube 7 is composed of a thin film, and the film thickness is, for example, 10-300 m.
- the tube 7 is formed as an open end having an opening 7j at the front end.
- the tube 7 is formed as an open end having an opening 7k at the rear end.
- the force of the tube 7 shown in the state in which the upper surface 7a and the lower surface 7b are separated from each other by a predetermined distance is the width dimension W3 of the tube 7. It means the width dimension when and are in close contact in the vertical direction (Z1-Z2 direction in the figure).
- the width dimension W 1 of the first sheet 5 is formed larger than the width dimension W 3 of the tube 7. Further, the width dimension W2 of the second sheet 6 is also formed larger than the width dimension W3 of the tube 7.
- the first sheet 5 and the second sheet 6 are arranged in a positional relationship in which they are stacked in the vertical direction (Z1-Z2 direction in the figure) via the tube 7. Yes.
- One side end 5c of the first sheet 5 and one side end 6c of the second sheet 6 face each other, and the other side end 5d of the first sheet 5 and the second sheet
- the other side end 6d of 6 is disposed so as to face each other.
- One side end 7c of the tube 7 is located on the inner side of the one side end 5c of the first sheet 5 and the one side end 6c of the second sheet 6.
- the other side end 7d of the tube 7 is positioned inside the other side end 5d of the first sheet 5 and the other side end 6d of the second sheet 6. It is arranged in a positional relationship located at.
- the width dimension W1 of the first sheet 5 and the width dimension W2 of the second sheet 6 are both formed larger than the width dimension W3 of the tube 7. Further, a positional relationship in which one side end 7c of the tube 7 is located inside the one side end 5c of the first sheet 5 and the one side end 6c of the second sheet 6 is provided. It is arranged with. Further, the other side end 7d of the tube 7 is positioned on the inner side of the other side end 5d of the first sheet 5 and the other side end 6d of the second sheet 6. Arranged in relation.
- a central region 5g is formed between the side regions 5e and 5f of the first sheet 5.
- the width dimension W4 of the central region 5g is the same as the width dimension W3 of the tube 7.
- a central region 6g is formed between the side regions 6e and 6f of the second sheet 6, and the width dimension W5 of the central region 6g is the same as the width dimension W3 of the tube 7. is there.
- the front end 5h of the first sheet 5 is formed.
- the front end 6h of the second sheet 6 and the front end 7h of the tube 7 face each other in the vertical direction.
- the rear end 5i of the first sheet 5, the rear end 6i of the second sheet 6 and the rear end 7i of the tube 7 face each other in the vertical direction.
- the lower surface 5b of the first sheet 5 is the central region.
- the entire upper surface 7 a of the tube 7 is joined.
- the upper surface 6a of the second sheet 6 is joined in a state where it is in contact with the entire lower surface 7b of the tube 7 in the central region 6g.
- the lower surface 5b of the first sheet 5 and the upper surface 6a of the second sheet 6 are joined to the side region 5e and the side region 6e, and the side The side region 5f and the side region 6f are joined.
- the joining of the first sheet 5, the second sheet 6, and the tube 7 can be performed by a method using a laminate or an adhesive.
- the bonding layer used for laminating and bonding is omitted.
- the tube 7 shown in FIG. 2 the central region 5g of the first sheet 5, and the central region 6g of the second sheet 6 are the hollow portion 2 shown in FIG. Configure.
- the side regions 5e and 6e of the first sheet 5 and the second sheet 6 shown in FIG. 2 constitute the joint 3a of the hollow body 1 shown in FIG.
- the side regions 5f and 6f of the first sheet 5 and the second sheet 6 constitute the joint portion 3b of the hollow body 1 shown in FIG.
- the first sheet 5 and the second sheet 6 are made of, for example, a PE woven fabric woven from a polyethylene (PE) material in the form of a string or a thin sheet, and polypropylene (PP) on the surface of the PE woven fabric.
- PE polyethylene
- PP polypropylene
- PP fabric or PP film woven with coated or PE film or string or thin polypropylene (PP) material both uniaxially stretched film and biaxially stretched film can be used
- aluminum foil, metal foil such as copper foil, or polyester (PET) film or the surface of a base material made of PP or PET with aluminum vapor deposition or copper vapor deposition, or PP nonwoven fabric, PE nonwoven fabric, PET nonwoven fabric, Nylon nonwoven fabric or paper material can be used.
- the tube 7 is formed of, for example, a PE film or a PP film, and a multilayer structure in which a high-density PE film and a low-density PE film are laminated, or a high-density PP film and a low-density PP film are laminated.
- the multilayer structure can be configured. In this case, for example, when the hollow body 1 is used as a fender wrapping material, each layer constituting the multilayer structure is mixed with an antifungal agent in all or a part of each layer constituting the multilayer structure. Additives can be mixed depending on the application.
- This tube 7 is formed by inflation method
- the first sheet 5 and the tube 7 are bonded by a laminating method via the bonding layer 430 having PE force
- the first sheet 5 When one of the tubes 7 is made of a material that also has PE force and the other is made of PP force, it is difficult to join the two. Therefore, the surface force of the material made of PP is joined together. It is preferable to be coated with a material (for example, an olefin-based material that has been subjected to corona discharge treatment) to make it easier!
- a material for example, an olefin-based material that has been subjected to corona discharge treatment
- the second sheet 6 and the tube 7 are bonded by the laminating method via the bonding layer 431 having PE force, the second sheet 6 and the tube 7 are bonded.
- the surface of the material made of PP is It is preferably coated with a material (for example, olefin-based material that has been subjected to corona discharge treatment) to facilitate the joining of the two.
- the first sheet 5 and the second sheet 6 are joined to the top and bottom of the tube 7. Therefore, since the tube 7 is reinforced by the first sheet 5 and the second sheet 6, the strength of the hollow body 1 can be improved.
- the central region 5g of the first sheet 5 and the central region 6g of the second sheet 6 are joined to the entire upper surface 7a and the lower surface 7b of the tube 7. Therefore, the tube 7 can be reliably reinforced.
- the hollow portion 2 of the hollow body 1 is configured to include the tube 7 having an integral structure in which a joint or the like is not formed. Therefore, the flow into the hollow portion 2 When a body or packaged body is inserted, there is no leakage of force such as seams.
- the hollow body 1 can be used as a fluid carrier such as a hose, for example.
- the hollow part 2 can be used as a bag body for wrapping a packaged body by joining in the width direction, or one of the openings formed at both ends in the longitudinal direction by the hollow part 2 can be used. It can be joined and used as a disposable futon. Furthermore, it can also be used as a package for long materials such as metal wire wrapping.
- FIG. 3 is a perspective view showing a second embodiment of the hollow body of the present invention
- FIG. 4 is an exploded perspective view of the hollow body shown in FIG.
- a hollow body 101 shown in FIGS. 3 and 4 has the same constituent elements as the hollow body 1 shown in FIGS. 1 and 2. Therefore, among the constituent elements of the hollow body 101 shown in FIG. 3 and FIG. 4, the same constituent elements as those of the hollow body 1 shown in FIG. 1 and FIG.
- two hollow bodies 101 are formed side by side with a predetermined interval 110 in the hollow portion 102A and 102B force width direction (XI-X2 direction in the drawing).
- the dimension of the predetermined interval 110 is W6 in the drawing.
- the hollow portion 102A extends in the longitudinal direction of the hollow body 101, is formed as an open end having an opening 104Aa at the front end, and is formed as an open end having an opening 104Ab at the rear end. Speak.
- the hollow portion 102B extends in the longitudinal direction of the hollow body 101, is formed as an open end having an opening 104Ba at the front end, and has an opening 104Bb at the rear end. It is formed as an open end.
- a joint 3c is formed between the two hollow portions 102A and 102B.
- the joint 3c has a predetermined width dimension and is formed to extend in the longitudinal direction (Y1-Y2 direction in the drawing).
- the hollow body 101 has tubes 107 and 108 positioned between the first sheet 5 and the second sheet 6, and the tubes 107 and 108 and the force width They are arranged side by side with a predetermined interval W 6 in the direction.
- the tubes 107 and 108 constitute a hollow part forming member of the hollow body 101 shown in FIGS.
- first sheet 5, the second sheet 6, the tube 107, and the tube 1 The longitudinal dimension of 08 is formed to the same dimension.
- the tubes 107 and 108 have a cylindrical shape extending in the longitudinal direction (Y1-Y2 direction in the drawing), and are formed in an integral structure in which no seam or the like is formed. Yes.
- the tubes 107 and 108 are formed in a thin film shape, and the film thickness is, for example, 10-300 ⁇ m.
- the tube 107 is formed as an open end having an opening 107j at the front end.
- the tube 107 is formed as an open end having an opening 107k at the rear end.
- the tube 108 extends in the longitudinal direction and is formed as an open end having an opening 103 ⁇ 4 at the front end.
- the tube 7 is formed as an open end having an opening 108k at the rear end.
- the planar shape of the tubes 107 and 108 viewed from above is formed as a rectangle having width dimensions W7 and W8 and extending in the longitudinal direction, respectively.
- the tube 107 is shown in a state in which the upper surface 107a and the lower surface 107b are separated from each other by a predetermined distance.
- the width dimension W7 of the tube 107 refers to the upper surface 107a and the lower surface 107b. It means the width dimension when it is brought into close contact with the upper and lower direction (Z1-Z2 direction in the figure).
- the tube 108 also has a force that the upper surface 108a and the lower surface 108b are spaced apart from each other by a predetermined distance.
- the width dimension W8 of the tube 108 refers to the upper surface 108a and the lower surface 108b in the vertical direction ( This means the width dimension when in close contact with the Z1-Z2 direction in the figure.
- the force in which the width dimension W7 of the tube 107 and the width dimension W8 of the tube 108 are formed to be the same size is limited to this in the present invention.
- the width dimensions W7 and W8 may be formed in different sizes.
- the width dimension W9 of the first sheet 5 is between the width dimension W7 of the tube 107, the width dimension W8 of the tube 108, and between the tubes 107 and 108. It is formed larger than the total dimension W11 of the distance dimension W6. Further, the width dimension W10 of the second sheet 6 is also based on the total dimension W11 of the width dimension W7 of the tube 107, the width dimension W8 of the tube 108, and the distance dimension W6 between the tubes 107 and 108. Is also formed large. [0081] As shown in FIG. 4, the first sheet 5 and the second sheet 6 are stacked in the vertical direction (the Z1-Z2 direction in the figure) via the tubes 107 and 108. It is arranged.
- one side end 5c of the first sheet 5 and one side end 6c of the second sheet 6 face each other, and the other side end 5d of the first sheet 5 and the second side end 6c
- the other side edge 6d of the sheet 6 is disposed so as to face each other.
- the positional relationship in which the side end 107d of the tube 107 is located inside the other side end 5d of the first sheet 5 and the other side end 6d of the second sheet 6 is provided.
- the side end 108c of the tube 108 is positioned on the inner side of the one side end 5c of the first sheet 5 and the one side end 6c of the second sheet 6. Arranged in positional relationship.
- the width dimension W9 of the first sheet 5 and the width dimension W10 of the second sheet 6 are both the width dimension W7 of the tube 107 and the tube 108 described above.
- the width dimension W8 and the total dimension W11 of the distance dimension W6 between the tubes 107 and 108 are formed.
- the side end 107d of the tube 107 is arranged in a positional relationship so as to be located on the inner side of the other side end 5d of the first sheet 5 and the other side end 6d of the second sheet 6.
- the side end 108c of the tube 108 is positioned so as to be located inside the one side end 5c of the first sheet 5 and the one side end 6c of the second sheet 6. Be placed.
- a central region 5g is formed between the side regions 5e and 5f of the first sheet 5.
- the width dimension W12 of the central region 5g is the same as the width dimension W11.
- a central region 6g is formed between the side regions 6e and 6f of the second sheet 6, and the width dimension W13 of the central region 6g is the same as the width dimension W11 of the tube 7. is there.
- the first sheet 5, the second sheet 6, and the tubes 107 and 108 have the same longitudinal length, so the first sheet Of 5
- the front end 5h, the front end 6h of the second seat 6, the front end 107h of the tube 107, and the front end 108h of the tube 108 face each other in the vertical direction.
- the rear end 5i of the first sheet 5, the rear end 6i of the second sheet 6, the rear end 107i of the tube 107, and the rear end 108i of the tube 107 face each other in the vertical direction.
- the lower surface 5b of the first sheet 5 is in the center.
- the entire upper surface 107a of the tube 107 and the entire upper surface 108a of the tube 108 are joined.
- the upper surface 6a of the second sheet 6 is bonded in the central region 6g while being in contact with the entire lower surface 107b of the tube 107 and the entire lower surface 108b of the tube 108.
- the lower surface 5b of the first sheet 5 and the upper surface 6a of the second sheet 6 are joined to the side region 5e and the side region 6e, and the side The side region 5f and the side region 6f are joined.
- the tubes 107 and 108 shown in FIG. 4, the central region 5g of the first sheet 5, and the central region 6g of the second sheet 6 are the hollow portions shown in FIG. Configure 102A and 102B.
- the side regions 5e and 6e of the first sheet 5 and the second sheet 6 shown in FIG. 4 constitute the joint portion 3a of the hollow body 101 shown in FIG. 3, and the side shown in FIG.
- the side regions 5f and 6f of the first sheet 5 and the second sheet 6 constitute the joint 3b of the hollow body 1 shown in FIG.
- the portion where the lower surface 5b of the first sheet 5 and the lower surface 6b of the second sheet 6 are bonded to each other at the interval 110 of the interval 110 constitutes a bonded portion 3c shown in FIG.
- the tubes 107 and 108 are formed of, for example, a PE film or a PP film, and a multilayer structure in which a high-density PE film and a low-density PE film are laminated, or a high-density PP film and a low-density PP film are laminated.
- the multilayer structure can be configured. In this case, for example, when the hollow body 101 is used as an anti-fouling packaging material, an anti-fouling agent is mixed in all or a part of each layer constituting the multilayer structure. Additives can also be mixed depending on the application.
- the tubes 107 and 108 are formed by an inflation method.
- One of the tubes 107 and 108 is made of a material made of SPE and the other material is made of a material made of SPP. It is preferable that it is coated with a material that makes it easy to bond the two together (for example, a corona discharge treatment applied to an olefin-based material! /).
- the second sheet 6 and the tubes 107 and 108 are joined by a laminating method via a joining layer 431 having PE force
- one of the tubes 107 and 108 is made of PE and the other is made of PP, it is difficult for the two to be joined. It is preferable to be coated with a material (for example, olefin-based material that has been subjected to corona discharge treatment) to facilitate bonding.
- the first sheet 5 and the second sheet 6 are joined to the upper and lower sides of the tubes 107 and 108, respectively. Therefore, since the tubes 107 and 108 are reinforced by the first sheet 5 and the second sheet 6, the strength of the hollow body 101 can be improved.
- the central region 5g of the first sheet 5 is formed on the entire upper surface 107a and the lower surface 107b of the tube 107 and on the entire upper surface 108a and the lower surface 108b of the tube 108. Since the central region 6g of the second sheet 6 is joined, the tubes 107 and 108 can be reliably reinforced.
- the hollow portions 102A and 102B of the hollow body 101 are configured to have the tubes 107 and 108 having an integral structure in which a joint or the like is not formed. Therefore, when a fluid or an object to be packed is put into the hollow portions 102A and 102B, leakage does not occur from a joint or the like.
- the two hollow portions 102A and 102B are formed.
- the number of hollow portions is not limited and the tubes 107 and 108 are not limited. It is also possible that three or more hollow portions are formed by arranging the hub.
- the width dimensions W7 and W8 of the tubes 107 and 108 may be formed with the same width dimension or different width dimensions.
- the hollow body 101 has two hollow portions 102A and 102B, for example, when the hollow body 101 is used as a hose, different transported objects are used in the hollow portions 102A and 102B. Can be transported. Further, when used as a bag body, different objects to be packed can be packed in the hollow portions 102A and 102B.
- the tube 7 shown in FIG. 2 and the tubes 107 and 108 shown in FIG. 4 are examples in which seams and the like are respectively formed to have a monolithic structure.
- the present invention is not limited to this, and as shown in FIG. 5, the tubes 7, 107 and 108 force are formed by winding the planar sheet body 17 into a cylindrical shape.
- a material formed in a cylindrical shape by joining the side edges 17a and 17b at the joint 17c may be used.
- the sheet body 17 is formed in a thin film shape, and the film thickness is, for example, 10 to 300 ⁇ m.
- the sheet body 17 is formed of, for example, a PE film or a PP film, and has a multilayer structure in which a high density PE film and a low density PE film are laminated, or a high density PP film and a low density PP film. It can be composed of a laminated multilayer structure.
- a multi-layer structure is formed, for example, an antifungal agent is mixed in all or a part of each layer constituting the multi-layer structure. Additives can be mixed in each layer depending on the application.
- a sheet formed by opening a tube formed by an inflation method can be used.
- a sheet obtained by a known method such as a sheet formed by a T-die method can be used.
- FIG. 6 is a perspective view showing a third embodiment of the hollow body of the present invention.
- a hollow body 601 shown in FIG. 6 has the same components as the hollow body 1 shown in FIG. Therefore, among the components of the hollow body 601 shown in FIG. 6, the same components as those of the hollow body 1 shown in FIG.
- the hollow body 601 is also configured to have a hollow portion 2 and joint portions 3a and 3b.
- FIG. 7 is an exploded perspective view of the hollow body 601 shown in FIG.
- the hollow body 601 includes the first sheet 5, the second sheet 6 positioned on the lower side (Z2 direction side in the drawing) of the first sheet 5, and the first sheet 5
- the sheet 5 includes two sheet bodies 607 and 608 interposed between the sheet 5 and the second sheet 6.
- the sheet bodies 607 and 608 are arranged in a positional relationship overlapping in the vertical direction.
- the sheet bodies 607 and 608 constitute the hollow portion forming member of the hollow body 601 shown in FIGS.
- the sheet body 607 is formed as a rectangle extending in the longitudinal direction having a planar shape force in the width direction (width dimension) W20 as viewed from the upper side (Z1 direction side in the drawing).
- the sheet body 608 also has a planar shape as viewed from above, and is formed as a rectangle extending in the longitudinal direction having a dimension (width dimension) W21 in the width direction.
- the width dimension W20 of the sheet body 607 and the width dimension W21 of the sheet body 608 are formed to the same dimension.
- the film thickness of the sheet bodies 607 and 608 is, for example, 10-300 ⁇ m.
- the first sheet 5 and the second sheet 6 and the sheet bodies 607 and 608 have the same longitudinal dimension.
- the width dimension W1 of the first sheet 5 is formed larger than the width dimension W20 of the sheet body 607 and the width dimension W21 of the sheet body 608. Yes. Further, the width dimension W2 of the second sheet 6 is also formed larger than the width dimension W20 of the sheet body 607 and the width dimension W21 of the sheet body 608.
- the first sheet 5 and the second sheet 6 are stacked in the vertical direction (the Z1-Z2 direction in the figure) via the sheet bodies 607 and 608. It is arranged at. At this time, one side end 5c of the first sheet 5 and one side end 6c of the second sheet 6 face each other, and the other side end 5d of the first sheet 5 and the second side end 6c The other side edge 6d of the sheet 6 is disposed so as to face each other.
- one side end 607c of the sheet body 607 is positioned on the inner side of the one side end 5c of the first sheet 5 and the one side end 6c of the second sheet 6. Position And the other side end 607d of the sheet body 607 is located inside the other side end 5d of the first sheet 5 and the other side end 6d of the second sheet 6. Are arranged in a positional relationship.
- one side end 608c of the sheet body 608 is positioned on the inner side of the one side end 5c of the first sheet 5 and the one side end 6c of the second sheet 6.
- the other side end 608d of the sheet body 608 is the other side end 5d of the first sheet 5 and the other side end 6d of the second sheet 6. It is arranged in a positional relationship located inside.
- the width dimension W1 of the first sheet 5 and the width dimension W2 of the second sheet 6 are both the width dimension W20 of the sheet body 607 and the width of the sheet body 608. It is formed larger than the dimension W21.
- one side end 7c of the sheet body 607 and one side end 608c of the sheet body 608 are the one side end 5c of the first sheet 5 and the one of the side edges 5c of the second sheet 6. They are arranged in a positional relationship located on the inner side of one side end 6c.
- the other side end 607d of the sheet body 607 and the other side end 608d of the sheet body 608 are the other side end 5d of the first sheet 5 and the other side end 608d of the second sheet 6. Arranged in a positional relationship located inside the side edge 6d.
- the width dimension W4 of the central region 5g formed between the side regions 5e and 5f of the first sheet 5 is the width dimension W20 of the sheet body 607 and the width dimension W20 of the sheet body 608. Same as width dimension W21.
- the width dimension W5 of the central area 6g formed between the side areas 6e and 6f of the second sheet 6 is the width dimension W20 of the sheet body 607 and the width dimension W20 of the sheet body 608. Same as width dimension W21.
- the front end 608h of 8 faces each other in the vertical direction.
- the rear end 5i of the first sheet 5, the rear end 6i of the second sheet 6, the rear end 607i of the sheet body 607, and the rear end 608i of the sheet body 608 are opposed to each other in the vertical direction. To do.
- the lower surface of the first sheet 5 in a state where the first sheet 5, the second sheet 6, the sheet body 607, and the sheet body 608 are arranged in a positional relationship as shown in FIG. 5b is joined to the entire upper surface 607a of the sheet body 607 in the central region 5g. Further, the upper surface 6a of the second sheet 6 is joined in the state of being in contact with the entire lower surface 608b of the sheet body 608 in the central region 6g.
- the lower surface 5b of the first sheet 5 and the upper surface 6a of the second sheet 6 are joined to the side region 5e and the side region 6e.
- the side region 5f and the side region 6f are joined.
- FIG. 8 is a cross-sectional view taken along the line VIII-VIII in FIG.
- both side J ends 607c and 607d of the sheet body 607 are not joined to both side J ends 608c and 608d of the sheet body 608, and both side ends 607c of the sheet body 607 are joined.
- 607d and the lateral region 5e of the first sheet 5 and the lateral region 6e of the second sheet 6 are joined to the outside of both side ends 608c, 608d of the sheet body 608, and The side region 5f of the first sheet 5 and the side region 6f of the second sheet 6 are joined.
- the side end 607c of the sheet body 607 and the side end 608c of the sheet body 608 are shown separated from each other, but this is because the structure is shown to be easily divided. Actually, the side end 607c of the sheet body 607 and the side end 608c of the sheet body 608 may be in contact with each other. Similarly, in FIG. 8, the side end 607d of the sheet body 607 and the side end 6 08d of the sheet body 608 are shown separated from each other, but this is because the structure is shown to be easily divided, Actually, the side end 607d of the sheet body 607 may be in contact with the side end 608d of the sheet body 608.
- both side ends 607c and 607d of the sheet body 607 and the both side ends 608c and 608d of the sheet body 608 are not joined to each other, and 1
- the joining of the first sheet 5, the second sheet 6, and the sheet bodies 607, 608 can be performed by a method using a laminate or an adhesive.
- the bonding layer used for laminating is omitted.
- first sheet 5, the second sheet 6, the sheet body 607, and the sheet body 608 are joined to form the hollow body 601 shown in FIG.
- the sheet bodies 607 and 608 shown in FIG. 7 the central region 5g of the first sheet 5, and the central region 6g of the second sheet 6 are formed in the hollow shown in FIG. Part 2 is composed.
- the side regions 5e and 6e of the first sheet 5 and the second sheet 6 shown in FIG. 7 constitute the joint 3a of the hollow body 601 shown in FIG.
- the side regions 5f and 6f of the first sheet 5 and the second sheet 6 constitute the joint portion 3b of the hollow body 601 shown in FIG.
- the sheet bodies 607 and 608 are formed of, for example, a PE film or a PP film, and have a multilayer structure in which a high-density PE film and a low-density PE film are laminated, or a high-density PP film and a low-density PP film. It can be composed of a laminated multilayer structure. In this case, for example, when the hollow body 601 is used as an anti-fouling packaging material, an anti-fouling agent is mixed in all or a part of each layer constituting the multilayer structure. Additives can also be mixed depending on the application. As the sheet bodies 607 and 608, for example, a sheet formed by opening a tube formed by an inflation method can be used. In addition, a sheet obtained by a known method such as a sheet formed by a T-die method can be used.
- first sheet 5 and the sheet body 607 are joined by a laminating method via a joining layer 430 having PE force as in the manufacturing process shown in Fig. 15 to be described later, for example.
- one of the first sheet 5 and the sheet body 607 is made of a material having PE force and the other is made of PP, it is difficult to join the two.
- Surface force of the material that makes it easier to join the two for example, olefin It is preferable that the system material is coated with a corona discharge treatment).
- the second sheet 6 and the sheet body 608 are bonded by a laminating method via a bonding layer 431 having a PE force as in the manufacturing process shown in FIG. 16, for example, If one of the second sheet 6 and the sheet body 608 is made of a material that also has PE force and the other material is made of SPP, it is difficult to join the two, so the one made of material made of PP It is preferable that the surface force is coated with a material (for example, a corona discharge treatment applied to an olefin-based material) for facilitating the bonding of the two.
- a material for example, a corona discharge treatment applied to an olefin-based material
- the first sheet 5 and the second sheet 6 are joined to the top and bottom of the sheet bodies 607 and 608, respectively. Therefore, since the hollow portion 2 can be formed in a state where the sheet bodies 607 and 608 are reinforced by the first sheet 5 and the second sheet 6, the hollow portion 2 has sufficient strength.
- the hollow body 601 having the following can be obtained.
- the central region 5g of the first sheet 5 is joined to the entire upper surface 6077a of the sheet body 607. Further, since the lower surface 608b of the sheet body 608 and the central region 6g of the second sheet 6 are joined, the strength of the hollow body 601 can be increased.
- FIG. 9 is a perspective view showing a fourth embodiment of the hollow body of the present invention.
- a hollow body 701 shown in FIG. 9 has the same components as the hollow body 1 shown in FIG. It is. Therefore, among the components of the hollow body 701 shown in FIG. 9, the same components as those of the hollow body 1 shown in FIG.
- the hollow body 701 is also configured to have a hollow portion 2 and joint portions 3a and 3b.
- FIG. 10 is an exploded perspective view of the hollow body 701 shown in FIG.
- the hollow body 701 includes a first sheet 5, a second sheet 6 positioned on the lower side (Z2 direction side in the drawing) of the first sheet 5, and the first sheet 5.
- a folded sheet body 707 interposed between the sheet 5 and the second sheet 6 is provided.
- the folded sheet body 707 includes a sheet body 710 having a planar shape viewed from the upper side (Z1 direction side in the figure) formed in a rectangular shape in the width direction (XI-X2 direction in the figure).
- a center line O—O that bisects is formed by bending both side edges 710a and 710b so as to face each other in the vertical direction (Z1-Z2 direction in the figure).
- a bent edge 710c is formed on the center line O-O.
- the bent sheet body 707 constitutes a hollow portion forming member of the hollow body 701 shown in FIGS.
- the bent edge 710c of the sheet body 710 constitutes one side end 707c of the bent sheet body 707. Further, both side edges 710a and 710b of the sheet body 710 constitute the other side edge 707d of the folded sheet body 707.
- the folded sheet body 707 is folded at the center line OO to form an upper surface 707e formed on the upper side (Z1 direction side in the drawing) of the center line OO, and a lower side ( A lower surface 707f formed on the Z2 direction side) is formed.
- the upper surface 707el of the upper surface 707e constitutes the upper surface 707a of the folded sheet body 707
- the lower surface 707f2 of the lower surface 707f constitutes the lower surface 707b of the folded sheet body 707.
- the dimension (width dimension) of the folded sheet body 707 in the width direction is W30, and the thickness of the folded sheet body 707 is, for example, 10 to 300 ⁇ m.
- the width dimension W1 of the first sheet 5 is formed larger than the width dimension W30 of the folded sheet body 707. Further, the width dimension W2 of the second sheet 6 is also formed larger than the width dimension W30 of the folded sheet body 707. [0136] As shown in FIG. 10, the first sheet 5 and the second sheet 6 are arranged in a positional relationship in which they are stacked in the vertical direction (Z1-Z2 direction in the figure) via the folded sheet body 707. It has been done.
- one side end 5c of the first sheet 5 and one side end 6c of the second sheet 6 face each other, and the other side end 5d of the first sheet 5 and the first side end 6c
- the other side edge 6d of the second sheet 6 is disposed so as to face each other.
- one side end 707c of the folded sheet body 707 is located inside the one side end 5c of the first sheet 5 and the one side end 6c of the second sheet 6.
- the other side end 707d of the bent sheet body 707 is arranged in a positional relationship, and the other side end 5d of the first sheet 5 and the other side of the second sheet 6 are arranged. Arranged in a positional relationship located inside the end 6d.
- the width dimension W1 of the first sheet 5 and the width dimension W2 of the second sheet 6 are both formed larger than the width dimension W30 of the folded sheet body 707. Further, a position where one side end 707c of the folded sheet body 707 is located inside the one side end 5c of the first sheet 5 and the one side end 6c of the second sheet 6. Arranged in relationship. Further, the other side end 707d of the bent sheet body 707 is positioned on the inner side of the other side end 5d of the first sheet 5 and the other side end 6d of the second sheet 6. Arranged in positional relationship.
- the width dimension W4 of the central region 5g formed between the side regions 5e and 5f of the first sheet 5 is the same as the width dimension W30 of the folded sheet body 707.
- the width dimension W5 of the central area 6g formed between the side areas 6e and 6f of the second sheet 6 is the same as the width dimension W30 of the folded sheet body 707.
- the first sheet 5, the second sheet 6, and the folded sheet body 707 have the same longitudinal dimension, so that the first sheet 5
- the front end 5h of the second sheet 6, the front end 6h of the second sheet 6, and the front end 707h of the folded sheet body 707 are mutually connected. Opposing in the vertical direction.
- the rear end 5i of the first sheet 5, the rear end 6i of the second sheet 6, and the rear end 707i of the folded sheet body 707 are opposed to each other in the vertical direction.
- the lower surface 5b of the first sheet 5 in a state where the first sheet 5, the second sheet 6, and the folded sheet body 707 are arranged in a positional relationship as shown in FIG. Is joined to the entire upper surface 707el of the upper surface 707e of the folded sheet body 707 in the central region 5g.
- the upper surface 6a of the second sheet 6 is joined in a state in contact with the entire lower surface 707f2 of the lower surface 707f of the folded sheet body 707 in the central region 6g.
- the lower surface 5b of the first sheet 5 and the upper surface 6a of the second sheet 6 are joined to the side region 5e and the side region 6e, and the side The side region 5f and the side region 6f are joined.
- FIG. 11 is a cross-sectional view taken along the line XI—XI in FIG.
- both side edges 710a and 710b of the sheet body 710 constituting the folded sheet body 707 are not joined, and both side edges 710a and 710b of the sheet body 710 (the folded sheet body 707
- the side region 5f of the first sheet 5 and the side region 6f of the second sheet 6 are joined outside the side end 707d).
- the side region 5e of the first sheet 5 and the side region 6e of the second sheet 6 are joined to each other outside the side edge 707c of the folded sheet body 707.
- the joining of the first sheet 5, the second sheet 6, and the upper surface 707e and the lower surface 707f of the folded sheet body 707 is performed by a method using a laminate or an adhesive. be able to.
- the bonding layer used for laminating and bonding is omitted.
- the first sheet 5, the second sheet 6, and the folded sheet body 707 are joined to form the hollow body 701 shown in FIG.
- the upper surface 707e and the lower surface 707f of the folded sheet body 707 shown in FIG. 10 the central region 5g of the first sheet 5, and the middle of the second sheet 6 are shown.
- the central region 6g constitutes the hollow portion 2 shown in FIG.
- the side regions 5e and 6e of the first sheet 5 and the second sheet 6 shown in FIG. 10 constitute the joint portion 3a of the hollow body 701 shown in FIG.
- the side regions 5f and 6f of the first sheet 5 and the second sheet 6 shown in FIG. 9 constitute the joint portion 3b of the hollow body 701 shown in FIG.
- the sheet body 710 constituting the folded sheet body 707 is formed of, for example, a PE film or a PP film, and has a multilayer structure in which a high-density PE film and a low-density PE film are laminated, or a high-density PP film. And a multi-layer structure in which a low-density PP film is laminated.
- each layer constituting the multilayer structure is mixed with all or a part of each layer constituting the multilayer structure. Additives can also be mixed depending on the application.
- a sheet formed by opening a tube formed by an inflation method can be used.
- a sheet obtained by a publicly known method such as a sheet formed by a T-die method can be used.
- first sheet 5 and the folded sheet body 707 are bonded together by a laminating method via a bonding layer 430 having PE force as in the manufacturing process shown in Fig. 15 to be described later, for example.
- one of the first sheet 5 and the folded sheet body 707 is made of a material that also has PE force and the other is made of PP, it is difficult to join the two, so it is made of a material made of PP.
- the surface force of the outer side is coated with a material for facilitating the joining of the two (for example, a corona discharge treatment applied to an olefin-based material).
- the second sheet 6 and the folded sheet body 707 are joined by a laminating method via a joining layer 431 having a PE force as in the manufacturing process shown in FIG. 16, for example.
- a joining layer 431 having a PE force As in the manufacturing process shown in FIG. 16, for example.
- one of the second sheet 6 layers and the folded sheet body 707 is made of a material having PE force and the other is made of PP, it is difficult to join the two.
- the surface that is formed of a material having high strength is coated with a material (for example, a corona discharge treatment applied to an olefin-based material) for facilitating the joining of the two.
- the hollow body 701 shown in FIGS. 9 to 11 the first sheet 5 and the second sheet 6 are joined above and below the folded sheet body 707. Accordingly, since the hollow portion 2 can be formed in a state where the folded sheet body 707 is reinforced by the first sheet 5 and the second sheet 6, the hollow portion 2 has sufficient strength.
- the hollow body 701 can be provided.
- the sheet body 710 is obtained by a force inflation method which is widely used by manufacturing a tube obtained by the inflation method. Since the sheet body 7 10 is manufactured by inflating the precursor hollow body extruded by air, the film thickness of the sheet body 710 is to improve the strength by improving the thinning material or the like. There is a limit. Thus, even if a hollow body is manufactured by joining both side edges 710a and 710b of the low strength sheet body 710, the strength cannot be improved.
- the first sheet 5 is formed on the entire upper surface 707el of the upper surface 707e of the folded sheet body 707 including the sheet body 710.
- the central region 5g of the folded body 707 and the lower surface 707f2 of the lower surface 707f of the folded sheet body 707 and the central region 6g of the second sheet 6 are joined. The strength can be increased.
- the sheet bodies 607 and 608 shown in FIG. 7 may be used in place of the tubes 107 and 108 forming the hollow body 101 shown in FIGS. 3 and 4.
- the folded sheet body 707 shown in FIG. 10 may be used in place of the tubes 107 and 108 constituting the hollow body 101 shown in FIGS.
- FIG. 12 is a perspective view showing a first embodiment of the seat structure of the present invention.
- a sheet structure 201 shown in FIG. 12 includes a lower layer sheet 202 and an upper side of the lower layer sheet 202 (the Z1 direction side in the drawing). ) And an upper layer sheet 203 formed on top of each other.
- the planar shape viewed from above the lower layer sheet 202 is formed in a rectangle extending in the longitudinal direction (Y1-Y2 direction in the drawing) of the sheet structure 201.
- the upper layer sheet 203 is also formed in a rectangular shape extending in the longitudinal direction of the sheet structure 201.
- the upper layer sheet 203 is composed of a first sheet half 204 and a second sheet half 205.
- the first sheet half 204 and the second sheet half 205 are joined to the upper surface 202a of the lower layer sheet 202 side by side in the width direction of the sheet structure 201 (the XI-X2 direction in the drawing). .
- the first half sheet 204 has an inner end 204c, an outer end 204d, a front end 204h, and a rear end 204i.
- the second sheet half body 205 has an outer end 205c, an inner end 205d, a front end 205h, and a rear end 205i.
- one side end 202c of the lower layer sheet 202 and the outer end 205c of the second sheet half 205 are formed to face each other in the vertical direction.
- the other side end 202d of the lower layer sheet 202 and the outer end 204d of the first sheet half 204 are formed so as to face each other in the vertical direction.
- first sheet half 204 and the second sheet half 2051S are bonded to the entire upper surface 202a of the lower layer sheet 202.
- the inner end region 204e formed on the inner end 204c side of the first sheet half 204 and the inner end 205d side of the second sheet half 205 are formed.
- the inner end region 205e thus formed is valley-folded by folding lines 210 and 211 and is bent upward with respect to the upper surface 202a of the lower layer sheet 202.
- the first sea The inner end region 204e of the second half 204 and the inner end region 205e of the second sheet half 205 are joined to form a joint 203a.
- the joint 203a is formed continuously from the front end 201a to the rear end 201b of the sheet structure 201.
- the lower layer sheet 202 is formed of, for example, a PP film or a PE film, and a multilayer structure in which a high-density PP film and a low-density PP film are laminated, or a high-density PE film and a low-density PE film are laminated.
- the multilayer structure can be configured. In this case, for example, when the sheet structure 201 is used as an anti-fouling packaging material, an anti-fouling agent is mixed in all or part of each layer constituting the multilayer structure. Depending on the application, additives can be mixed.
- the lower layer sheet 202 is formed by an inflation method.
- the first sheet half 204 and the second sheet half 205 are made of, for example, a PE woven fabric woven from a string or fine sheet-like polyethylene (PE) material, or a polypropylene on the surface of the PE woven fabric.
- PP polypropylene
- metal foil such as aluminum foil or copper foil, or polyester (PET) film, or PP or PET-powered substrate with aluminum vapor deposition or copper deposition, or PP nonwoven fabric or PE nonwoven fabric It can also be formed from PET nonwoven fabric, nylon nonwoven fabric, or paper.
- the first sheet half 204 and the second sheet half 205 are joined to the lower layer sheet 202 by a laminating method via a joining layer 430 having PE force.
- the first sheet half 204 and the second sheet half 205 and the lower layer sheet 202 are made of a material with one force PE, and the other is a material with a PP force. Because the two are difficult to be joined, the surface of the material made of PP is coated with a material for facilitating the joining (for example, olefin-based material subjected to corona discharge treatment). I prefer to do that!
- the upper sheet 203 is bonded on the lower sheet 202. Accordingly, since the lower layer sheet 202 is reinforced by the upper layer sheet 203, the strength of the lower layer sheet 202 can be improved. The In particular, since the upper layer sheet 203 is bonded to the entire upper surface 202a of the lower layer sheet 202, the lower layer sheet 202 can be reliably reinforced.
- FIG. 13 is a perspective view showing a second embodiment of the seat structure of the present invention.
- a sheet structure 801 shown in FIG. 13 has the same components as the sheet structure 201 shown in FIG. Therefore, in the sheet structure 801 shown in FIG. 13, the same components as those in the sheet structure 201 shown in FIG.
- the sheet structure 801 shown in FIG. 13 is different from the sheet structure 201 shown in FIG. 12.
- the lower layer sheet 202 forms one sheet force.
- the lower layer sheet 202 is composed of two lower layer sheet halves 202e and 202f.
- the planar shape seen from above the lower layer sheet halves 202e and 202f is formed in a rectangular shape extending in the longitudinal direction (Y1-Y2 direction in the drawing) of the sheet structure 801. ing.
- the front end 202fl of the lower layer sheet half 202f and the front end 204h of the first sheet half 204 are formed so as to face each other in the up-down direction (Z1-Z2 direction in the drawing). It has been done. Further, the front end 202el of the lower layer sheet half 202e and the front end 205h of the second sheet half 205 are formed to face each other in the vertical direction.
- the front end 202el of the lower layer sheet 202 is formed by the front end 202el of the lower layer sheet half 202e and the front end 202fl of the lower layer half half 202f.
- the rear end 202f2 of the lower layer sheet half 202f and the rear end 204i of the first sheet half 204 are formed to face each other in the vertical direction.
- the rear end 202e2 of the lower layer sheet half 202e and the rear end 205i of the second sheet half 205 are formed to face each other in the vertical direction.
- the rear end 202e2 of the lower layer sheet half 202e and the rear end 202f2 of the lower layer half 202f constitute a front end 202h of the lower layer sheet 202.
- one outer end 202e3 of the lower sheet half 202e and the outer end 205c of the second sheet half 205 are formed to face each other in the vertical direction.
- the outer end 202f4 of the lower sheet half 202f and the outer end 204d of the first sheet half 204 are: It is formed so as to face each other in the vertical direction.
- one side end 202e3 of the lower layer sheet half 202e constitutes one side end 202c of the lower layer sheet 202
- the outer end 202f4 force of the lower layer sheet half 202f is the other side of the lower layer sheet 202.
- the lower layer sheet halves 202e and 202f are arranged side by side in the force width direction (the XI-X2 direction in the drawing), and the inner end 202e4 of the lower layer sheet half 202e and the lower layer sheet
- the half body 202f faces the inner end 202f3 in the width direction (the XI-X2 direction in the drawing).
- first sheet half 204 and the second sheet half 205 are bonded to the entire upper surfaces 202e5 and 202f5 of the lower sheet half 202e and 202f.
- the lower layer sheet halves 202e and 202f are formed of, for example, a PP film or a PE film, and have a multilayer structure in which a high-density PP film and a low-density PP film are laminated, or a high-density PE film and a low-density PE film.
- the lower layer sheet halves 202e and 202f are formed by an inflation method.
- the first sheet half 204 and the second sheet half 205 and the lower sheet half 202e and 202f are laminated with a bonding layer 430 having PE force.
- the first sheet half body 204 and the second sheet half body 205, and the lower sheet half body 202e and 202f is a material composed of one force PE, while the other If the material is made of PP, it is difficult to join them together. It is preferably coated with a material that has been treated.
- the upper layer sheet 203 is bonded on the lower layer sheet 202. Accordingly, since the lower layer sheet 202 is reinforced by the upper layer sheet 203, the strength of the lower layer sheet 202 can be improved. The In particular, since the upper layer sheet 203 is bonded to the entire upper surface 202a of the lower layer sheet 202, the lower layer sheet 202 can be reliably reinforced.
- FIGS. 14 to 16 are process diagrams for explaining a method of manufacturing the hollow body 1 shown in FIGS. 1 and 2.
- FIG. 14 shows an inflation film molding machine for manufacturing the tube 7 shown in FIG. 2 and a manufacturing process of the tube 7.
- the inflation Finolem molding machine 300 includes three extruders 301, 302, 303, an annular die 304, a cooling unit 305, and a guide plate 306. .
- the extruders 301, 302, and 303 melt and knead the resin material of the tube 7 and extrude the resin material to the annular die 304 at a predetermined speed and a predetermined pressure.
- the tube 7 to be manufactured can have a multilayer structure by changing different types of rosin raw materials and kinds and amounts of additives added to the rosin raw materials.
- the high-density PP and low-density PP or high-density PE and low-density PP are separately supplied as the raw material for the resin, so that the tube 7 is supplied with the high-density PP.
- It can be manufactured with a multilayer structure in which a film and a low-density PP film are laminated, or a multilayer structure in which a high-density PE film and a low-density PE film are laminated.
- a material having a different amount and type of fender-proofing agent is supplied to each of the extruders 301, 302, and 303 to form a multilayer structure It is also possible to produce a material in which an antifungal agent is mixed in all or a part of each layer.
- the force provided with the three extruders 301, 302, 303 is not limited to the quantity of the extruders 301, 302, 303.
- the number of the extruders 301, 302, and 303 can be set according to the number of layers of the tube 7 having a multilayer structure.
- the resin raw material extruded into the annular die 304 by the extruders 301, 302, and 303 is extruded into an integrally structured cylinder by the annular die 304, and the cylindrical body 310 is formed into the annular die 304. Projects upward (Z1-Z2 direction side in the figure).
- the annular die The cylindrical body 310 is cooled by the cooler 305 while air is supplied from 304 into the inner diameter portion 310 a of the cylindrical body 310.
- the cylindrical body 310 expands by force toward the upper side of the annular die 304 while the diameter of the cylindrical body 310 increases and the film thickness decreases.
- Cooling air is sprayed onto the cylindrical body 310 by the cooler 305 to cool the cylindrical body 310, whereby the tube 7 is manufactured.
- the tube 7 is folded by the guide plate 306 in a state where the upper surface 7a and the lower surface 7b shown in Fig. 2 are in a folded state, and then sandwiched between the pinch roll 311 and the conveying roll 312, And is wound into a roll shape by a scraping roll 317 provided in the scraper 316 via the guide rolls 313, 314, and 315.
- FIG. 15 shows an apparatus for joining the first sheet 5 shown in FIG. 2 and a joining process to the tube 7 shown in FIG.
- a joining apparatus 400 shown in FIG. 15 includes a conveyor 401 having a transporting roll 401a and a transporting belt 401b, and a joining layer applying mechanism 410.
- the bonding layer coating mechanism 410 is composed of a melt extruder 403 provided with a hopper 402 and a T-die 404 connected to the melt extruder 403.
- the tube 7 manufactured by the inflation finer molding machine 300 shown in FIG. 14 is formed on the upper surface 7a and the lower surface 7b shown in FIG. Is placed in a folded state.
- the tube 7 placed on the conveyor belt 401b is also illustrated by the conveyance belt 401b being continuously moved at a constant speed toward the Y1 side force Y2 illustrated by the rotational driving force of the conveyance roll. Transported from Y1 side to Y2 side.
- the resin raw material 420 for forming the bonding layer 430 is added.
- This resin material 420 is a polyethylene resin material for forming the bonding layer 430.
- the polyethylene resin material is a low density polyethylene (LDPE) having a relatively low melting temperature.
- LDPE low density polyethylene
- melt extrusion method using a T-die refers to a die that is shaped like a letter when a die adapter is attached. It means a processing method to extrude and form a resin into a sheet.
- the resin raw material 420 is heated, melted, kneaded and extruded by the melt extruder 403, and is molded into a sheet form from the slit formed in the paddy die 404. However, the bonding layer 43 is pushed out over the entire upper surface 7a of the tube 7.
- the first sheet 5 passes through the guide roll 440 and is placed on the bonding layer 430. Is supplied. At this time, the tube 7 and the central region 5g of the first sheet 5 are positioned so as to face each other in the vertical direction (Z1-Z2 direction in the drawing). Therefore, the side regions 5e and 5f of the first sheet 5 are located on the side of the tube 7. Then, the first sheet 5 is bonded onto the tube 7 through the bonding layer 430 by lamination, and a bonded body 450 is manufactured. Then, the joined body 450 in which the first sheet 5 is joined onto the tube 7 is taken up by a take-up roll (not shown).
- FIG. 16 shows an apparatus and a joining process for joining the first sheet 5 shown in FIG. 2 to the joined body 450 of the tube 7 and the first sheet 5 shown in FIG. Yes.
- the joined body 450 force shown in FIG. 15 is placed on the conveyor belt 401b with the lower surface 7b of the tube 7 on the upper side (Z1 side in the drawing) and the first sheet 5 It is placed so as to be located on the lower side (Z2 side in the figure), and conveyed to the Y1 side force Y2 side in the figure.
- the resin raw material 421 is a polyethylene resin material for forming the bonding layer 431.
- the polyethylene resin material is a low-density polyethylene (LDPE) having a relatively low melting temperature.
- the resin raw material 421 is heated, melted, kneaded and extruded by the melt extruder 403, and is molded into a sheet from the slit formed in the T die 404.
- the bonding layer 431 is pushed out to the entire lower surface 7 b of the tube 7 constituting the bonded body 450 and the side regions 5 e and 5 f of the first sheet 5.
- the bonding layer application mechanism 410 passes the guide roll 440 and passes over the bonding layer 431.
- the second sheet 6 is supplied.
- the side regions 5e and 5f of the first sheet 5 constituting the joined body 450 and the side regions 6e and 6f of the second sheet 6 are vertically oriented (Z1-Z2 in the drawing). Direction).
- the tube 7 and the central region 6g of the second sheet 6 are arranged to face each other in the vertical direction.
- the hollow body 1 manufactured as described above is wound up by a winding roll (not shown).
- the first layer and the tube If one of the seven materials is made of PE and the other is made of PP, it is difficult to join the two, so the surface force of the material made of PP makes it easier to join the two. It is preferably coated with a material (for example, an olefin-based material subjected to corona discharge treatment).
- the second sheet 6 and the tube 7 are joined by a laminating method via a joining layer 431 made of PE, the second sheet 6 and the tube 7 are joined.
- One of the layer and the tube 7 is made of PE, and the other is made of PP.
- the surface of the material made of PP is harder to join.
- the hollow body 1 may be manufactured by performing the steps simultaneously. Thus, if the steps shown in FIGS. 15 and 16 are performed at the same time, the manufacturing efficiency of the hollow body 1 can be improved.
- the first sheet 5 and the second sheet 6 are joined to the upper and lower sides of the tube 7 so that the tube 7 is
- the first sheet 5 and the second sheet 6 can be reinforced. Therefore, the hollow body 1 with improved strength can be produced.
- the entire upper surface 7a and lower surface 7b of the tube 7 can be joined to the central region 5g of the first sheet 5 and the central region 6g of the second sheet 6, it is reliably reinforced.
- the hollow body 1 can be manufactured.
- the hollow portion 2 of the hollow body 1 can be constituted by the tube 7 having an integral structure formed with a seam or the like, it is manufactured by, for example, a T-die extrusion method. Compared with a hollow body formed by joining sheet bodies, a hollow body 1 that does not leak can be manufactured.
- the force obtained by laminating the tube 7 and the first sheet 5 and the second sheet 6 is limited to this.
- the tube 7 may be bonded to the first sheet 5 and the second sheet 6 by bonding with an adhesive.
- an adhesive may be used instead of the bonding layers 230 and 231.
- the tubes 107 and 108 are formed on the conveyor belt 401b in the step shown in FIG.
- the second sheet 6 is attached to the tube in the step shown in FIG. 1
- the second sheet 6 may be joined to the lower surfaces 107b and 108b of 07 and 108 and the first sheet. Note that three or more hollow portions can be formed in the hollow body 101 by arranging tubes in addition to the tubes 107 and 108 in the step shown in FIG.
- FIG. 15 and FIG. 16 show, for example, the use of two joining devices 400, or a single joining device provided with two or more of the conveyor belt 401b and the joining layer coating mechanism 410.
- the hollow body 1 may be manufactured by performing the steps simultaneously. Thus, if the steps shown in FIGS. 15 and 16 are performed at the same time, the manufacturing efficiency of the hollow body 1 can be improved.
- the sheet bodies 607 and 608 are moved in the vertical direction (Z1-Z2 direction in the figure) on the conveying belt 401b in the step shown in FIG.
- the second sheet 6 is moved to the sheet body in the step shown in FIG.
- the second sheet 6 may be joined on the lower surface 608b of the 608 (Z1 direction side in the figure) and on the first sheet.
- the hollow body 1 may be manufactured by performing the steps simultaneously. Thus, if the steps shown in FIGS. 15 and 16 are performed at the same time, the manufacturing efficiency of the hollow body 1 can be improved.
- the upper surface 707a (the upper surface 70 7e of the folded sheet body 707 is placed on the transport belt 401b in the step shown in Fig. 15. 16 is arranged with the upper surface 707el) of the upper surface 707e of the folded sheet body 707 after the first sheet 5 is joined to the upper surface 707el of the folded sheet body 707 in the step shown in FIG.
- the second sheet 6 is placed on the lower surface of the bent sheet body 707 (the lower surface 707f2 of the lower surface 707f) (on the Z1 direction side in the drawing) and on the first sheet.
- the second sheet 6 may be joined.
- the hollow body 1 may be manufactured by performing the steps simultaneously. Thus, if the steps shown in FIGS. 15 and 16 are performed at the same time, the manufacturing efficiency of the hollow body 1 can be improved.
- the sheet body 710 constituting the folded sheet body 707 can be formed by cutting the tube 7 obtained in the process shown in FIG. 14 into a single sheet.
- the hollow body 1 manufactured by the steps shown in FIGS. 14 to 16 is connected to the inner side of the joint 3a shown in FIG.
- the cut end faces 550a and 550b cut along the cutting line 500 may be opened away from each other to the state shown in FIG.
- the first sheet 5 shown in FIG. 2 constitutes the first sheet half 204 shown in FIG. 12, and the second sheet 6 shown in FIG. A second sheet half 205 is formed.
- the tube 7 shown in FIG. 2 constitutes the lower layer sheet 202 shown in FIG.
- the hollow region so as to remove the side region 5f of the first sheet 5 and the side region 6f of the second sheet 6 constituting the joint portion 3b. After cutting the part 2 in the longitudinal direction, it may be opened in the state shown in FIG.
- the hollow body 701 shown in Figs. 9 to 11 manufactured by the above-described method extends in the longitudinal direction as indicated by a one-dot chain line inside the joint portion 3b shown in Figs. 9 and 11.
- the cut end faces 560a and 560b cut along the cutting line 501 may be opened in the direction away from each other and opened in the state shown in FIG.
- the first sheet 5 shown in FIG. 10 constitutes the first sheet half 204 shown in FIG. 12
- the second sheet 6 shown in FIG. 10 is the second sheet 6 shown in FIG.
- a half sheet 205 is formed.
- the curled sheet body 707 constitutes the lower layer sheet 202 shown in FIG.
- the sheet structure 201 shown in FIG. 12 is manufactured by such a method, the sheet structure 201 having a large width can be manufactured simply by cutting and opening the hollow body 1. Can do.
- the hollow body 1 having a small width is first manufactured, and the hollow body 1 is cut open so that the width is approximately twice that of the hollow body 1. Since the sheet structure 201 having dimensions can be manufactured, the manufacturing cost can be reduced and the manufacturing can be performed with a small manufacturing space.
- the hollow body 601 shown in Figs. 6 to 8 manufactured by the above-described method is connected to the inside of the joint 3a shown in Fig. 6 by a one-dot chain line.
- the cut end faces 550a and 550b cut along the cutting line 500 are opened in a direction away from each other and opened in the state shown in FIG.
- the first sheet 5 shown in FIG. 7 constitutes the first sheet half 204 shown in FIG.
- the second sheet 6 shown in FIG. 6 is the second sheet 6 shown in FIG.
- the sheet half 205 is formed. Further, the sheet body 607 shown in FIG. 7 constitutes the lower layer sheet half body 202e, and the sheet body 608 constitutes the lower layer sheet half body 202f.
- the hollow region so as to remove the side region 5f of the first sheet 5 and the side region 6f of the second sheet 6 constituting the joint 3b. After cutting the part 2 in the longitudinal direction, it may be opened in the state shown in FIG.
- the hollow body 701 shown in Figs. 9 to 11 manufactured by the above-described method is arranged in the longitudinal direction as indicated by a one-dot chain line inside the joint portion 3a shown in Figs. 9 and 11.
- the cut end faces 550a and 550b cut along the cutting line 500 may be opened in a direction away from each other and opened in the state shown in FIG.
- the first sheet 5 shown in FIG. 10 constitutes the first sheet half 204 shown in FIG. 13
- the second sheet 6 shown in FIG. 10 is the second sheet 6 shown in FIG.
- a half sheet 205 is formed.
- the folded sheet body 707 shown in FIG. 10 constitutes the lower layer sheet halves 202e and 202f shown in FIG.
- the sheet structure 801 shown in FIG. 13 is manufactured by such a method, the sheet structure 801 having a large width dimension can be manufactured simply by cutting and opening the hollow body 601. Can do.
- the hollow body 601 having a small width is first manufactured, and the hollow body 1 is cut open so that the hollow body 601 is approximately twice as large. Since the sheet structure 801 having a width dimension can be manufactured, the manufacturing cost can be reduced and the manufacturing can be performed in a small manufacturing space.
- the hollow portion 2 is further formed on the hollow body 601 shown in FIGS. 6 to 8 (Z1 direction side in the drawing) by the sheet bodies 607 and 608 and the first sheet 5; You may comprise the hollow body 901 of 5th Embodiment shown in FIG.
- the hollow body 901 since the two hollow portions 2 are formed in the upward and downward direction (Z1-Z2 direction in the drawing), for example, when the hollow body 901 is used as a hose, the two hollow portions 2 are formed. This makes it possible to transport different objects. Further, when used as a bag body, it becomes possible to pack different objects to be packed in the two hollow portions 2.
- the tube 7 shown in Fig. 2 may be arranged vertically instead of the sheet bodies 607 and 608, and the sheet bodies 607 and 608 may be substituted.
- the folded sheet body 707 shown in FIG. 10 may be arranged vertically. Even in these cases, it becomes possible to transport or pack different objects in the hollow portions 2 formed above and below, or the dimensions of the hollow body 901 in the width direction (XI-X2 direction in the drawing). It is possible to easily manufacture a sheet structure having a width dimension approximately three times as large as (width dimension), and to manufacture in a small manufacturing space compared to the method of manufacturing a sheet structure by the T-die method. Is possible.
- FIG. 1 is a perspective view showing a first embodiment of a hollow body of the present invention
- FIG. 2 is an exploded perspective view of the hollow body shown in FIG.
- FIG. 3 is a perspective view showing a second embodiment of the hollow body of the present invention.
- FIG. 4 is an exploded perspective view of the hollow body shown in FIG.
- FIG. 5 is a perspective view showing another form of a tube constituting the hollow body shown in FIGS. 1 and 3.
- FIG. 6 is a perspective view showing a third embodiment of the hollow body of the present invention.
- FIG. 7 is an exploded perspective view of the hollow body shown in FIG.
- FIG. 8 Cross-sectional view taken along line VIII-VIII in Fig. 6,
- FIG. 9 is a perspective view showing a fourth embodiment of the hollow body of the present invention.
- FIG. 10 is an exploded perspective view of the hollow body shown in FIG.
- FIG. 12 is a perspective view showing a first embodiment of the seat structure of the present invention.
- FIG. 13 is a perspective view showing a second embodiment of the sheet structure of the present invention.
- FIG. 14 is a manufacturing process of the hollow body shown in FIG. 1, and a process diagram showing a manufacturing process
- FIG. 15 The hollow body manufacturing apparatus shown in FIG. 1 and the process shown in FIG. One process diagram showing the process
- FIG. 16 is a process diagram showing the hollow body manufacturing apparatus shown in FIG. 1 and the steps performed after the process shown in FIG.
- FIG. 17 is a perspective view showing a fifth embodiment of the hollow body of the present invention.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Bag Frames (AREA)
- Making Paper Articles (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Laminated Bodies (AREA)
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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JP2006548674A JP4495731B2 (ja) | 2004-12-17 | 2005-03-01 | 中空体およびその製造方法 |
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JP2004365561 | 2004-12-17 | ||
JP2004-365561 | 2004-12-17 |
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WO2006064577A1 true WO2006064577A1 (ja) | 2006-06-22 |
Family
ID=36587641
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2005/003357 WO2006064577A1 (ja) | 2004-12-17 | 2005-03-01 | 中空体とシート構造体、およびこれらの製造方法 |
Country Status (2)
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JP (1) | JP4495731B2 (ja) |
WO (1) | WO2006064577A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2019141707A (ja) * | 2015-04-21 | 2019-08-29 | キョーラク株式会社 | パネル |
JP2020055643A (ja) * | 2018-10-02 | 2020-04-09 | 信彦 小林 | 自立型詰め替え容器 |
FR3099418A1 (fr) * | 2019-08-02 | 2021-02-05 | Sealynx International | Elément d’habillage et/ou d’étanchéité encollé pour véhicule automobile |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5116373A (ja) * | 1974-06-07 | 1976-02-09 | Ootomateikon As | |
JPS57181847A (en) * | 1981-05-04 | 1982-11-09 | Daishiyouwa Shikou Sangyo Kk | Manufacture of double layer bag, inner bag and outer bag thereof can freely be separated |
JPH0468836U (ja) * | 1990-10-26 | 1992-06-18 | ||
JPH04278332A (ja) * | 1990-12-19 | 1992-10-02 | Paul Kiefel Hochfrequenz Anlagen Gmbh | 2個のフォイル間にそう入体を溶着する方法 |
JPH07309371A (ja) * | 1993-04-19 | 1995-11-28 | Tetra Laval Holdings & Finance Sa | 包装材料およびその製造方法 |
JPH08301307A (ja) * | 1995-04-28 | 1996-11-19 | Daiwa Gravure Co Ltd | 包装体 |
JP3070009U (ja) * | 1999-12-27 | 2000-07-14 | ロータリー株式会社 | 内面撥水撥油性紙袋 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0370009U (ja) * | 1989-11-08 | 1991-07-12 |
-
2005
- 2005-03-01 WO PCT/JP2005/003357 patent/WO2006064577A1/ja active Application Filing
- 2005-03-01 JP JP2006548674A patent/JP4495731B2/ja active Active
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5116373A (ja) * | 1974-06-07 | 1976-02-09 | Ootomateikon As | |
JPS57181847A (en) * | 1981-05-04 | 1982-11-09 | Daishiyouwa Shikou Sangyo Kk | Manufacture of double layer bag, inner bag and outer bag thereof can freely be separated |
JPH0468836U (ja) * | 1990-10-26 | 1992-06-18 | ||
JPH04278332A (ja) * | 1990-12-19 | 1992-10-02 | Paul Kiefel Hochfrequenz Anlagen Gmbh | 2個のフォイル間にそう入体を溶着する方法 |
JPH07309371A (ja) * | 1993-04-19 | 1995-11-28 | Tetra Laval Holdings & Finance Sa | 包装材料およびその製造方法 |
JPH08301307A (ja) * | 1995-04-28 | 1996-11-19 | Daiwa Gravure Co Ltd | 包装体 |
JP3070009U (ja) * | 1999-12-27 | 2000-07-14 | ロータリー株式会社 | 内面撥水撥油性紙袋 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2019141707A (ja) * | 2015-04-21 | 2019-08-29 | キョーラク株式会社 | パネル |
JP2020055643A (ja) * | 2018-10-02 | 2020-04-09 | 信彦 小林 | 自立型詰め替え容器 |
FR3099418A1 (fr) * | 2019-08-02 | 2021-02-05 | Sealynx International | Elément d’habillage et/ou d’étanchéité encollé pour véhicule automobile |
Also Published As
Publication number | Publication date |
---|---|
JPWO2006064577A1 (ja) | 2008-06-12 |
JP4495731B2 (ja) | 2010-07-07 |
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