JP3240458U - Laminates and packages - Google Patents

Abstract

A laminate that can suppress deformation of a photosensitive resin plate, and a package containing the laminate are provided. A laminate (20) includes a plurality of photosensitive resin plates (210) laminated along a lamination direction, and a pair of buffers (210) arranged to sandwich the plurality of photosensitive resin plates (210) from both sides in the lamination direction. material 220; In at least a part of the laminate 20, a pair of photosensitive resin plates 210 adjacent to each other are laminated without any other member interposed therebetween. [Selection drawing] Fig. 3

Description

TECHNICAL FIELD The present invention relates to a laminate including a photosensitive resin plate, and a package housing the laminate.

A photosensitive resin plate used for printing is a sheet-shaped member including a photosensitive resin that is cured by irradiation with ultraviolet rays, a base film that supports the photosensitive resin, and the like. As described in Patent Document 1 below, a plurality of photosensitive resin plates are stacked and housed inside an exterior material made of, for example, corrugated cardboard. The whole of a plurality of laminated photosensitive resin plates is hereinafter also referred to as a "laminate". Moreover, the whole of the laminated body and the exterior material which accommodates this is also called a "packaging body" below.

When the package is transported or the like, force is applied to the surface of the photosensitive resin plate or the like, which may deform a part of the photosensitive resin plate. In addition, if foreign matter adheres to a part of the photosensitive resin plates, there is a possibility that the foreign matter may adhere to the adjacent photosensitive resin plates or deformation due to the foreign matter may occur.

Therefore, it is common to sandwich a sheet-like cushioning material made of polyethylene foam between each of the photosensitive resin plates included in the laminate. That is, in the laminate, the photosensitive resin plates and the cushioning materials are alternately arranged along a predetermined direction.

JP 2020-175588 A

A cushioning material made of polyethylene foam has numerous irregularities on its surface. Therefore, when the cushioning material is pressed against the surface of the photosensitive resin plate, there is a possibility that the surface of the photosensitive resin plate is slightly deformed in rare cases. In addition, the adhesive photosensitive resin plate is exposed on the side of the photosensitive resin plate. There is a possibility that the resin plate will be damaged. Also, part of the cushioning material may remain attached to the photosensitive resin plate, causing problems in subsequent plate-making processes.

Therefore, it is considered that the laminate having the cushioning material sandwiched between all the photosensitive resin plates has a high possibility of causing the above-described deformation or chipping due to the cushioning material.

An object of the present invention is to provide a laminate capable of suppressing deformation of a photosensitive resin plate, and a package housing the laminate.

A laminate according to the present invention includes a plurality of photosensitive resin plates laminated along a predetermined direction, and a pair of cushioning materials arranged so as to sandwich the plurality of photosensitive resin plates from both sides in the predetermined direction. Prepare. At least in part, a pair of photosensitive resin plates adjacent to each other are laminated without any other member interposed therebetween.

In the laminate having such a structure, at least a part thereof, the pair of photosensitive resin plates are laminated in contact with each other without any other member being sandwiched therebetween. In this portion, deformation of the photosensitive resin plate due to inclusions such as cushioning material does not occur.

At the portion where the pair of photosensitive resin plates are in contact with each other, deformation of the photosensitive resin plates due to foreign matter or the like may still occur. However, according to experiments conducted by the present inventors, if a pair of cushioning materials are placed on both sides of the laminated photosensitive resin plates so as to sandwich the entire laminated photosensitive resin plates from the outside, the photosensitive resin plates can be removed. It has been found that the possibility of deformation of the flexible resin plate can be suppressed to almost zero. Therefore, in the laminate having the above structure, the deformation of the photosensitive resin plate can be sufficiently suppressed as compared with the conventional one.

ADVANTAGE OF THE INVENTION According to this invention, the laminated body which can suppress a deformation|transformation of a photosensitive resin plate, and the package which accommodated the said laminated body are provided.

FIG. 1 is a diagram showing the appearance of the package according to the first embodiment. FIG. 2 is a diagram showing the configuration of the exterior material of the package according to the first embodiment. FIG. 3 is a diagram showing the configuration of the laminate according to the first embodiment. FIG. 4 is a diagram showing the structure of a photosensitive resin plate. FIG. 5 is a diagram showing the configuration of a laminate according to the second embodiment. FIG. 6 is a diagram showing the configuration of a laminate according to the third embodiment. FIG. 7 is a diagram showing the appearance of a package according to the fourth embodiment.

Hereinafter, this embodiment will be described with reference to the accompanying drawings. In order to facilitate understanding of the description, the same constituent elements in each drawing are denoted by the same reference numerals as much as possible, and overlapping descriptions are omitted.

A first embodiment will be described. The package 10 according to the present embodiment contains a laminate 20 in which a plurality of photosensitive resin plates 210 are laminated inside an exterior material 100 . FIG. 1 is a diagram showing the appearance of the package 10. As shown in FIG. FIG. 2 is a diagram showing the configuration of the exterior material 100. As shown in FIG. FIG. 3 is a diagram schematically showing the configuration of the laminate 20 inside the package 10. As shown in FIG. FIG. 4 is a diagram showing the configuration of the photosensitive resin plate 210. As shown in FIG.

In this embodiment, a paper material, specifically cardboard, is used as the exterior material 100 . As shown in FIG. 1 , the exterior material 100 has a bottom plate 110 and a top plate 130 .

The bottom plate 110 is a member arranged on the lowest side. The bottom plate 110 is configured by arranging four cardboard tubes 112, which are also made of cardboard, along the outer circumference of a flat member 111 made of cardboard, and joining them with an adhesive such as hot melt. A concave portion 113 is formed inside each of the four paper tubes 112 to accommodate the later-described layered body 20 .

The top plate 130 is a cover that covers the bottom plate 110 from above, and is formed by folding corrugated cardboard.

The configuration of the exterior material 100 as described above is merely an example, and configurations other than those described above may be employed. The shape of parts to be combined to configure the exterior material 100 may be changed as appropriate.

Before describing the laminate 20, the configuration of the photosensitive resin plate 210 will be described first. The photosensitive resin plate 210 is a sheet-like member used as a printing plate for, for example, "flexographic printing", and its structure itself is known. As shown in FIG. 4 , the photosensitive resin plate 210 has a base film 211 , a photosensitive resin 212 and a cover film 213 .

The base film 211 is a sheet-like member that supports the entire photosensitive resin 212 . The base film 211 is made of a resin material transparent to ultraviolet rays, such as polyester. The base film 211 is integrated with a part of the photosensitive resin 212 after being exposed to ultraviolet rays, and is used as a printing plate together with the photosensitive resin 212 .

The photosensitive resin 212 is a resin material that hardens when irradiated with ultraviolet rays, and is formed as a layer with a uniform thickness covering the entire surface of the base film 211 . During exposure, the photosensitive resin 212 is irradiated with ultraviolet rays through the negative film. A portion of the photosensitive resin 212 irradiated with ultraviolet rays is cured and remains even after the subsequent development process. Other portions are removed from the base film 211 by being washed away with a developer.

The cover film 213 is a sheet-like member that covers the entire surface of the photosensitive resin 212 opposite to the base film 211 and protects the photosensitive resin 212 . The cover film 213 is peeled off and removed from the photosensitive resin 212 prior to exposure. A slip layer may be formed on the surface of the photosensitive resin 212 that is covered with the cover film 213 to adjust the transmittance of ultraviolet rays.

The photosensitive resin plate 210 may be an "analog plate" irradiated with ultraviolet rays through a negative film as described above, or may be a "digital plate". In the digital version of the photosensitive resin plate 210, a part of the black mask layer covering the surface of the photosensitive resin 212 is previously removed by laser, and then ultraviolet rays are irradiated through the removed part of the black mask layer. In either case, the configuration of the photosensitive resin plate 210 may be a known configuration, and thus specific illustrations and descriptions are omitted.

FIG. 3 schematically shows the configuration of the laminate 20 inside the exterior material 100. As shown in FIG. In addition, in FIG. 3, the thickness of each member constituting the laminate 20 is exaggerated. The actual thickness of each member differs from that shown in FIG. 3, and is thick enough to accommodate the entire laminate 20 in the recess 113 of FIG. As shown in FIG. 3, in the laminate 20, a plurality of photosensitive resin plates 210 are laminated so as to line up along the vertical direction. The direction in which the photosensitive resin plates 210 are laminated is hereinafter also referred to as the “laminating direction”. The stacking direction may be a direction other than the vertical direction. However, in order to keep the force locally applied to the photosensitive resin plate 210 as small as possible, it is preferable to set the stacking direction vertically as in this embodiment.

The number of photosensitive resin plates 210 laminated in the laminate 20, that is, the “number of pieces” of the package 10 can be set to any number. In this embodiment, a total of eight photosensitive resin plates 210 are laminated.

The laminate 20 is housed inside the exterior material 100 while being entirely wrapped in a poly sheet 140 . The poly sheet 140 is a sheet made of black polyethylene and serves to prevent the photosensitive resin plate 210 from being exposed to light.

The laminate 20 includes a plurality of photosensitive resin plates 210 as well as cushioning material 220 and coated paper 230 .

The cushioning material 220 is a sheet-like member made of polyethylene foam, for example. The cushioning material 220 has a rectangular shape when viewed from above, and is slightly larger than the shape of the photosensitive resin plate 210 . The thickness of the cushioning material 220 is 2 mm, but other thicknesses are possible. Also, the foaming ratio of the cushioning material 220 is 20.0 to 34.0 cc/g, but may be a different value.

As shown in FIG. 3, a total of two cushioning materials 220 are provided in the laminate 20, and these pairs of cushioning materials 220 support the plurality of photosensitive resin plates 210 from both sides in the vertical direction (that is, the stacking direction). It is arranged so as to be sandwiched. In other words, the cushioning material 220 is arranged above the uppermost photosensitive resin plate 210 and below the lowermost photosensitive resin plate 210 . This configuration prevents the uppermost photosensitive resin plate 210 from directly hitting the top plate 130 and the lowermost photosensitive resin plate 210 from directly hitting the bottom plate 110 .

The coated paper 230 is relatively thick coated paper and is arranged to protect the photosensitive resin plate 210 together with the cushioning material 220 described above. The shape of the coated paper 230 when viewed from the top may be the same as the shape of the cushioning material 220 or may be slightly smaller than the cushioning material 220 . The coated paper 230 has a thickness of 2 mm, but may have a different thickness.

A total of two coated papers 230 are provided in the laminate 20 in the same manner as the cushioning material 220 . Each coated paper 230 is arranged on the opposite side of the photosensitive resin plate 210 with the cushioning material 220 interposed therebetween. That is, the coated paper 230 is arranged above the cushioning material 220 arranged on the upper side and further below the cushioning material 220 arranged on the lower side. In other words, the coated paper 230 is arranged on each of both ends of the stack 20 in the stacking direction. It should be noted that a member made of a material different from that of the coated paper 230 may be used as the sheet-like member arranged at both ends.

With such a configuration, inside the package 10, between the top plate 130 and the photosensitive resin plate 210 and between the bottom plate 110 and the photosensitive resin plate 210, there is approximately 4 mm. (specifically, the photosensitive resin plate 210 and the coated paper 230) are interposed. This prevents a situation in which the steps of the top plate 130 or the like are transferred to the surface of the photosensitive resin plate 210 and the surface is deformed such as wrinkles.

Alternatively, the coated paper 230 may be arranged only between the top plate 130 and the photosensitive resin plate 210 and between the bottom plate 110 and the photosensitive resin plate 210 .

As shown in FIG. 3, in the laminate 20 of the present embodiment, all of the laminated photosensitive resin plates 210 are laminated without any other member interposed therebetween. In other words, the pair of photosensitive resin plates 210 adjacent to each other are stacked without any other member sandwiched therebetween at any position in the stacking direction. As a result, the surfaces of the pair of photosensitive resin plates 210 adjacent to each other are in direct contact with each other. In the above description, the term "lamination without other members being sandwiched" means that a sheet-like member such as the cushioning material 220 is not sandwiched. ” does not mean that there are no foreign substances unintended by the user.

If the photosensitive resin plates 210 are laminated without the cushioning material 220 or the like sandwiched between them, it seems that deformation of the photosensitive resin plates 210 will occur due to the sandwiching of foreign matter or the like. However, according to experiments conducted by the present inventors, if a pair of cushioning materials 220 are arranged on both sides in the stacking direction so as to sandwich the entire laminated photosensitive resin plates 210 from the outside. , the possibility of deformation of the photosensitive resin plate 210 can be suppressed to almost zero. Therefore, in the laminated body 20 configured as shown in FIG. 3, the deformation of the photosensitive resin plate 210 can be sufficiently suppressed as compared with the conventional one. In addition, by reducing the number of cushioning materials 220, the cost is reduced and the effect of contributing to environmental conservation is also obtained.

A second embodiment will be described. In the following, points different from the first embodiment will be mainly described, and descriptions of points common to the first embodiment will be omitted as appropriate.

This embodiment differs from the first embodiment in the configuration of the laminate 20 . As shown in FIG. 5, in the layered product 20 of the present embodiment, a protective member 221 is sandwiched between a portion of a portion where a plurality of photosensitive resin plates 210 are layered. The protective member 221 is a polyethylene foam having the same shape as the cushioning material 220 arranged in the upper and lower portions of the laminate 20 .

The number of photosensitive resin plates 210 laminated on the upper side of the protective member 221 and the number of photosensitive resin plates 210 laminated on the lower side of the protective member 221 are equal to each other, and both are four. .

As described above, in this embodiment, the protective member 221 is sandwiched between the pair of photosensitive resin plates 210 adjacent to each other in part of the laminate 20 . Disadvantages of arranging the photosensitive resin plate 210 without sandwiching other members (for example, deformation of the photosensitive resin plate 210) occur, and if the influence of the demerit cannot be ignored, as in the present embodiment. A configuration in which the protective member 221 is sandwiched in part may be employed.

In this embodiment, the number of photosensitive resin plates 210 that are continuously arranged without sandwiching the protective member 221 (4 in this embodiment) is the total number of photosensitive resin plates 210 (4 in this embodiment). 8) is 1/2. The number of protective members 221 sandwiched between the photosensitive resin plates 210 is one in this embodiment, but may be two or more. With such a configuration, the effect of interposing the protective member 221 can be dispersed over the entire laminate 20 .

The protective member 221 may be made of the same material as the cushioning material 220 as in this embodiment, or may be made of a material different from that of the cushioning material 220 . Moreover, the shape of the protection member 221 may be the same shape as the cushioning material 220 as in the present embodiment, but may be different from the cushioning material 220 .

A third embodiment will be described. In the following, points different from the second embodiment will be mainly described, and descriptions of points common to the second embodiment will be omitted as appropriate.

This embodiment also differs from the first embodiment in the configuration of the laminate 20 . As shown in FIG. 6, in the layered product 20 of the present embodiment, a protective member 221 is sandwiched between a portion of a portion where a plurality of photosensitive resin plates 210 are layered, as in the second embodiment (FIG. 5). is In this embodiment, a total of three protection members 221 are sandwiched. Between the cushioning material 220 and the protective member 221, or between a pair of protective members 221, two photosensitive resin plates 210 are laminated without any other member sandwiched therebetween. As a result, the number of protection members 221 is three, which is more than in the second embodiment (FIG. 5). Such a configuration also provides the same effects as those described in the first or second embodiment. The number of protective members 221 to be sandwiched may be appropriately adjusted according to the “number of pieces” of the package 10 and the probability of deformation occurring in the photosensitive resin plate 210 . In any case, the number of protective members 221 is preferably 1/2 or less of the number of photosensitive resin plates 210 .

A fourth embodiment will be described. In the following, points different from the first embodiment will be mainly described, and descriptions of points common to the first embodiment will be omitted as appropriate.

This embodiment differs from the first embodiment in the configuration of the exterior material 100 . FIG. 7 shows the appearance of the exterior material 100 according to this embodiment. In this embodiment, the exterior material 100 is configured as a "wooden box" made of wood. That is, the exterior material 100 of this embodiment has a bottom plate 110, a side plate 120, and a top plate 130, each of which is made of wood. The bottom plate 110 is configured as a so-called "pallet" into which the claws of a forklift can be inserted.

Reference numeral "121" in FIG. 7 is a fastener made of resin for holding each member. A part of the fastener 121 is fixed to the bottom plate 110 and the side plate 120 in advance. Each member such as the side plate 120 is fitted into the fastener 121 by sliding it.

Thus, materials other than corrugated cardboard can be used as the material of the exterior material 100 . The exterior material 100 may be made of wood as in the present embodiment, or may be made of a member made of metal or resin, for example.

The present embodiment has been described above with reference to specific examples. However, the present disclosure is not limited to these specific examples. Design modifications to these specific examples by those skilled in the art are also included in the scope of the present disclosure as long as they have the features of the present disclosure. Each element included in each specific example described above and its arrangement, conditions, shape, etc. are not limited to those illustrated and can be changed as appropriate. As long as there is no technical contradiction, the combination of the elements included in the specific examples described above can be changed as appropriate.

10: Package 20: Laminate 210: Photosensitive resin plate 220: Cushioning material 221: Protective member 230: Coated paper

Claims (9)

a plurality of photosensitive resin plates laminated along a predetermined direction;
A pair of cushioning materials arranged to sandwich the plurality of photosensitive resin plates from both sides in the predetermined direction,
A layered product in which a pair of said photosensitive resin plates adjacent to each other are layered without any other member being sandwiched therebetween, at least in part thereof. 2. The laminate according to claim 1, wherein all of the plurality of photosensitive resin plates are laminated with no other member interposed therebetween. 2. The laminate according to claim 1, wherein a protective member is interposed between a pair of said photosensitive resin plates adjacent to each other. 4. The laminate according to claim 3, wherein the number of said protective members is 1/2 or less of the number of said photosensitive resin plates. 4. The laminate according to claim 3, wherein the protective member is made of the same material as the cushioning material. 2. The laminate according to claim 1, wherein coated paper is further arranged at a position opposite to said photosensitive resin plate with said cushioning material interposed therebetween. 7. The layered product according to claim 6, wherein the coated paper is arranged at each of both ends in the predetermined direction. 2. The laminate according to claim 1, wherein said predetermined direction is a vertical direction. A package containing the laminate according to any one of claims 1 to 8 inside an exterior material.

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