JP2010036490A - Laminate method of bubble sheet and lamination film supply device used for this method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To laminate so as to produce no meandering and looseness in a lamination film when the two or more lamination films divided in a width direction are laminated on a bubble sheet. <P>SOLUTION: When the lamination films L divided into two or more in the width direction are laminated on a back film SB which is a flat film in the bubble sheet S of two layers consisting of a cap film SC and back film SB, a brake mechanism 3 controlling individually a tension of the lamination films L is provided on a rolled web hanging 2 of two or more lamination films L, the tension is controlled individually, and each lamination film L rendered sequentially from the rolled web hanging 2 is laminated on the bubble sheet S. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a method for laminating a bubble sheet and a laminate film supply apparatus used for carrying out the method.

Conventionally, a functional film is laminated on a flat surface of a two-layer or three-layer bubble sheet. Patent Document 1 discloses an example thereof, such as one functional film, for example, a film for imparting coloring or a picture, a film for imparting gas barrier properties, or a film for imparting heat ray reflection performance. A technique for laminating either of them on a bubble sheet is shown as an embodiment thereof.
JP 2007-44979 A

  However, in recent years, in order to meet diversifying needs, it is often necessary to attach a plurality of types of functional films to a single bubble sheet. For example, various attempts have been made such as laminating a laminate seal having a rust prevention function and a film having a deoxidation function on a common cell sheet.

  In addition, the product width of the bubble sheet is 1200 mm as a standard, but there are many types of functional films that do not satisfy this width, and in that case, a plurality of one type of films must be laminated side by side.

  Furthermore, in the case of a rust-proof film or conductive film, since a chemical or inorganic filler is kneaded into the resin, or a vapor deposition layer is provided on the surface, if you make a bag with heat seal etc. so that this layer comes inside It cannot be sealed firmly due to the presence of foreign matter. In order to improve such a problem, it is conceivable to make a bag tightly sealed by a non-laminate part by laminating narrow films at intervals.

  For the reasons described above, it is desired to laminate a film, which is divided in the width direction, on the flat surface of the air bubble sheet, with a gap or close contact therebetween.

  Therefore, the present inventors tried laminating by laminating a plurality of films on a conventional apparatus for adhering a single laminated film that is not divided in the width direction to a bubble sheet, and obtained good results. I couldn't.

  That is, with the conventional laminated film supply apparatus, it is only possible to collectively adjust the tension of a plurality of set films. However, the tension required to take up the slack of the individual films is slightly different. Therefore, aiming at one film and adjusting the weight of the brake will result in the brakes being too heavy or too light for other films, and other films will meander or wrinkle to get a good product. There was a problem that was not possible.

  The present invention aims to eliminate such problems.

  In the present invention, in order to solve the problems as described above, the tension applied to each laminate film is adjusted separately.

  That is, the method for laminating a bubble sheet according to the present invention is applied to one or both of a two-layer bubble sheet composed of a cap film and a back film or a flat film in a three-layer bubble sheet composed of a cap film, a back film and a liner film. , A method of laminating a laminate film divided into two or more in the width direction, and a brake mechanism for individually adjusting the tension of the laminate film is provided on the raw fabric hook of the two or more laminate films, Each laminate film, which is adjusted in tension individually and is sequentially drawn out from the original fabric hook, is laminated on the bubble sheet.

  As a typical embodiment, there can be mentioned a case where the laminate film divided into two or more is arranged with a predetermined interval in the width direction. It may be arranged. Here, the laminate film divided into two or more may be of different types or of the same type.

  As the laminate film, various functional films such as those having a rust prevention function, those having a deoxidation function, and those having a conductive function can be used.

  As a laminate film supply device used in such a method for laminating a bubble sheet, a laminate film can be unwound and wound on each of a plurality of original fabric hooks, and the film feed of each of these raw fabric hooks And a brake mechanism for individually adjusting the rotational resistance at the time.

  As a preferable aspect of the brake mechanism, a brake support rod and a plurality of leaf springs having a base end portion supported by the brake support rod and a distal end portion in sliding contact with the corresponding collar portion of the original fabric are formed. It is conceivable to include a brake and brake compression means for adjusting the pressure contact force of each brake to the collar portion.

  According to the invention which concerns on Claim 1, the lamination operation | work with respect to a bubble sheet can be performed in the state which provided the optimal tension | tensile_strength with respect to the 2 or more laminated film divided | segmented in the width direction, respectively. Therefore, there is an effect that all the laminated films are properly drawn out and laminated without causing meandering or loosening.

  According to the second aspect of the present invention, since it is possible to form a gap between the raw films of each laminate film, the components of the brake mechanism can be arranged efficiently, and the design freedom The degree can be improved.

  According to the invention which concerns on Claim 3, the braking force optimized respectively to the original fabric hook of each laminate film can be made to act separately. Therefore, it is possible to provide a laminate film supply apparatus that can easily carry out the laminating method according to the invention.

  According to the invention which concerns on Claim 4, the brake mechanism of the said laminate film supply apparatus can be comprised by simple components. Therefore, implementation of the laminate film supply device can be made particularly easy.

  The embodiment shown in FIGS. 1 to 5 is directed to a two-layered bubble sheet S composed of a cap film SC and a back film SB. A method of laminating a laminate film L divided into two or more in the width direction on the back film SB, which is a flat film of the bubble sheet S, is a method of laminating the two or more laminate films L. A brake mechanism 3 that individually adjusts the tension of the laminate film L is provided on the hook 2, and the laminate film L that is sequentially drawn out from the original fabric hook 2 is laminated on the bubble sheet S by adjusting the tension individually. The laminating method of the bubble sheet S made like this is shown.

  This laminating method is carried out, for example, by arranging the laminate film supply device 1 according to the present invention in the middle of a production line for a two-layered bubble sheet S that has been conventionally known.

  Specifically, the production line of the bubble sheet S having a two-layer structure is schematically shown in FIG. 1, and the film-shaped cap film material SCa in a thermoplastic state from the cap film die D1 is shown in FIG. Are sequentially supplied to the continuously rotating vacuum forming roll R, and the cap film SC having the bubble protrusion SC1 having a shape corresponding to the suction cavity R11 of the vacuum forming roll R is continuously formed. Further, a film-like back film material SBa in a thermoplastic state is sequentially supplied from a back film die D2 to a rotating vacuum forming roll R, and the back film material SBa is capped by a pressure roll RA. The film SC is configured to be pressed and bonded to the back side of the film SC. By passing through this step, a two-layered bubble sheet S composed of a cap film SC and a back film SB and having a large number of sufficiently sealed bubbles S1 is formed. Thereafter, the air bubble sheet S is peeled off from the vacuum forming roll R by the peeling roll RB, transferred to the pinch roll RC, and conveyed to the completion process.

  In such a production line, for example, the laminate film supply device 1 is disposed at a position related to the vacuum forming roll R. Laminate film supply apparatus 1 individually adjusts a plurality of original fabric hooks 2 that can be individually wound and wound with laminate film L, and rotational resistance at the time of film feeding of each original fabric hook 2. And a plurality of laminate films L fed out from each raw fabric hook 2 are gradually supplied between the vacuum forming roll R and the pressure roll RA, for example. It is like that.

  More specifically, the plurality of raw reaction hooks 2 are mounted on a common main shaft 4 so as to be independently rotatable, and are arranged at a predetermined interval by a spacer (not shown). A laminate film L is wound around each original fabric hook 2, and the laminate film L fed out from each original fabric hook 2 is gradually supplied between the vacuum forming roll R and the pressure roll RA. In addition, it is continuously attached to the outer surface of the back film SB that travels with the rotation of the vacuum forming roll R and the pressure roll RA. Therefore, in this embodiment, for example, as shown in FIGS. 3, 4, and 5, a plurality of laminate films L having a rust prevention function are attached with a gap therebetween.

  The brake mechanism 3 is used to apply a brake force that is individually adjusted to each original fabric hook 2 when each laminate film L is unwound from the original fabric hook 2. A plurality of plate spring-like brakes 7 in which a base end portion 7 a is supported by a support rod 5 and a tip end portion 7 b is slidably contacted with a corresponding collar portion 6 of the original fabric hook 2, and the collar portions of the brakes 7. 6 and a plurality of brake compression means 8 for adjusting the pressure contact force to 6 respectively. Each brake compression means 8 includes, for example, a pedestal 9 fixed to a device frame (not shown), and an adjustment bolt 10 that is attached to a female screw hole 9a formed in the pedestal 9 so as to be able to be screwed back and forth. Thus, the tip of the adjusting bolt 10 can press the intermediate portion of the brake 7 in the direction in which the tip 7 b of the brake 7 is pressed against the collar portion 6. Reference numeral 11 denotes a nut for preventing the adjustment bolt 10 from being loosened after adjustment.

  If it is a thing of such a structure, the pressure contact force with respect to each collar part 6 of each brake 7 can be changed by screwing back and forth each adjustment bolt 10 with respect to the base 9, and each brake 7 and each each The magnitude of the sliding frictional resistance with the collar portion 6 can be individually adjusted. Therefore, it is possible to individually adjust the tension of each laminate film L fed out by the pulling force accompanying the movement of the bubble sheet S from each original fabric hook 2, and the optimum state can be maintained for each laminate film L. . Therefore, it is possible to effectively suppress or prevent the occurrence of a problem that some of the laminate films L meander or wrinkle due to tension failure.

  Needless to say, the present invention is not limited to the above embodiment.

  That is, the air bubble sheet to be laminated is not limited to a two-layer one, but may have a three-layer structure including a cap film, a back film, and a liner film. In this case, a laminate film may be attached to either one or both of the back film and the liner film. FIG. 6 schematically shows a production line when the laminate film L is attached to the liner film SL side, and the same or corresponding parts as those shown in FIG. Is omitted.

  The cap film, the back film, and the liner film are not limited to thin ones having good flexibility, but may be thick ones that are somewhat rigid.

  In the above embodiment, a case where a plurality of laminate films having a rust prevention function are laminated at intervals is described. However, a plurality of laminate films of the same type or a plurality of laminate films of different types are densely laminated. You may make it do. FIG. 7 shows an example in which laminate films L having a rust prevention function and laminate films L2 having a deoxidation function are alternately and densely arranged.

  Moreover, although the said embodiment demonstrated the case where the laminated film supply apparatus of 1 series was provided, when laminating a laminate film densely etc., you may provide multiple series of laminated film supply apparatuses.

  The brake mechanism is not limited to the illustrated example, and may be, for example, a regenerative brake type in which a generator and a variable resistor are combined.

  In addition, various modifications may be made without departing from the spirit of the present invention.

The schematic diagram of the production line of the bubble sheet concerning one embodiment of the present invention. The side view of the laminate film manufacturing apparatus which concerns on the same embodiment. The perspective view of the laminate film manufacturing apparatus which concerns on the same embodiment. The top view of the laminate film manufacturing apparatus which concerns on the same embodiment. The schematic diagram of the air bubble sheet which stuck the laminate film concerning the embodiment. Schematic which shows typically the manufacturing line of the bubble sheet which concerns on other embodiment of this invention. Schematic of the bubble sheet which concerns on other embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Laminate film supply apparatus 2 ... Original fabric hook 3 ... Brake mechanism 5 ... Brake support rod 7 ... Brake 7a ... Brake base end 7b ... Brake tip 8 ... Brake compression means S ... Bubble sheet SC ... Cap film SB ... Back film SL ... Liner film L, L2 ... Laminate film

Claims (4)

  Laminate film divided into two or more in the width direction on one or both of a two-layer bubble sheet made of a cap film and a back film or a flat film in a three-layer bubble sheet made of a cap film, a back film and a liner film A brake mechanism that individually adjusts the tension of the laminate film is provided on the two or more laminate films, and the tension is adjusted individually and sequentially from the original coat. A method for laminating a bubble sheet, comprising laminating each laminated film to be fed to the bubble sheet.   The laminating method according to claim 1, wherein the two or more laminated films are arranged at a predetermined interval in the width direction.   A laminating film supply device used in the method for laminating a bubble sheet according to claim 1, wherein each laminating film is wound so that the laminating film can be unwound and rotated individually, A laminating film supply device comprising: a brake mechanism for individually adjusting the rotational resistance during the retraction of the film.   The brake mechanism includes a brake support rod, a plurality of plate spring-like brakes having a base end portion supported by the brake support rod and a distal end portion in sliding contact with the corresponding collar portion of the original fabric, and the brakes 4. A laminate film supply apparatus according to claim 3, further comprising brake compression means for adjusting the pressure contact force to the collar portion.

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