JP5426859B2 - Paper molded body and its manufacturing method - Google Patents

Description

  The present invention relates to a paper molded body such as a photographic stand, a memo stand, or a stand-type mount for a desktop calendar, and more particularly to a natural paper molded body and a method for manufacturing the same.

  Conventionally, a paper photo stand, a desktop calendar mount, and the like are known. However, a conventional paper photo stand, etc., cuts a relatively thick flat sheet to make a frame shape, and attaches or joins the required parts such as standing stand legs and supports to the frame. Since it is a structure that inserts legs and support side locking pieces into holes and cuts, the degree of freedom in design is low, so if the design is advanced or complicated, the number of parts increases, and it takes time to produce, There is also a problem that it is easily broken.

  On the other hand, there are some in which all or a part of the above-mentioned photo stand or stand-type mount for desk calendar is formed of a plastic composite. This type has a high degree of design freedom except for mold cost, so many products are supplied to the market, but plastic products or hybrid products such as plastic and paper or metal are not required. It is preferable not to use plastic or metal from the viewpoint of environmental problems as well as troublesome separation of materials at the time of disposal.

  Accordingly, an object of the present invention is to provide a paper molded product such as a photographic stand formed by three-dimensional molding using only natural paper and a manufacturing method thereof.

The configuration of the paper-made product of the present invention (hereinafter simply referred to as the present-molded product) for the purpose of solving the above-mentioned problems is that two or double-folded papers with an adhesive on the opposite surface The adhesive is cured with the adhesive, and the adhesive is cured while being molded into a substantially L-shaped side section by hot pressing, and the adhesive is cured before the adhesive is cured. To do.

In the present invention, paper made of a biodegradable plastic material can also be used.
Further, in the molded product of the present invention using a sheet that is folded and double-bonded, when a sheet is folded in two, it is possible to adopt a configuration in which a core paper string or the like is sandwiched inside the fold. it can. Further, instead of the core, or in combination with the core, a concave or convex streak that reinforces along the crease may be inserted as a rib.

  In the present invention, a structure in which, for example, a coarse fabric or nonwoven fabric, thin Japanese paper, or a film is laminated on the outer surface of the paper or the adhesive application surface can be used. Further, a thin cloth or nonwoven fabric, or a film made of a natural material or thin Japanese paper may be laminated on the outer surface of the paper molded body for the purpose of makeup or reinforcement. In this case, the fabric and nonwoven fabric are preferably made of natural materials. In addition, in the molded article of the present invention, appropriate printing or display (color, pattern, character, etc.) can be applied to the outer surface of the paper or cloth or the outer surface of the folded paper. Furthermore, in the molded product of the present invention, a paper sheet that has been subjected to a waterproofing or moisture-proofing treatment may be used, but the waterproofing or moisture-proofing treatment may be applied after the molded product of the present invention is completed.

  In the molded product of the present invention, when natural paper is used for the paper, if the glue to be applied is vegetable glue or animal glue, the material used for the production of the molded article is all adhesive. Since it is a natural material, it is desirable from the viewpoint of recyclability and environmental conservation. In the present invention, it is optional to use a synthetic adhesive as the adhesive.

The structure of the method for producing a molded body of the present invention is such that two sheets of paper with an adhesive on the opposite surface or double-folded papers are bonded together with the adhesive, and as an example male or female mold The adhesive is cured by forming a paper that has been bonded before the adhesive is cured by hot pressing with a surface having a desired cross-sectional shape, or hot pressing using a roll-shaped upper and lower mold. The paper is formed into a molded body having a substantially L-shaped side section .

Examples of the paper molded body of the present invention include a photo stand, a calendar stand-type mount, a chair, a tray, and an ornament. In particular, the calendar stand-type mount is formed in a substantially L-shaped side cross section, and when the comb-shaped or fork-nail-shaped ring portion for binding the calendar paper is formed at the upper end, the binding between the mount and the calendar paper is performed. Since the ring is integrally formed, it is rational and looks good.
Also, the forming direction of the double-bonded paper is one direction (front-rear direction), two directions (front-rear direction and width direction), and no direction (arbitrary direction within 360 degrees) with respect to the length direction of the paper. Either may be sufficient.

  According to the present invention, a stand for a photographic stand or a desk calendar is formed into a molded body of a desired shape, preferably using natural paper and preferably a natural material-based adhesive. Stands, desk calendars, and the like can be sent to a process such as recycling in a batch without changing their components.

  Next, the embodiment of the molded body of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of an example of a rectangular paper made of a relatively thick paper, which is a natural paper for forming the molded body of the present invention. FIG. 2 is a perspective view of a state in which the paper of FIG. 3 is a perspective view of a state in which the folded sheet of FIG. 2 is press-molded into an example of a photo stand, FIG. 4 is a perspective view of an example of a sheet forming a calendar stand-type mount, and FIG. FIG. 6 is a side view schematically showing the main part of the press molding process of the photo stand of FIG. 3.

The molded body of the present invention illustrated in FIG. 1 to FIG. 3 is, for example, a rectangular paper 1 (hereinafter referred to as about 0.2 to 0.5 mm) having a rectangular width of about 10 cm and a length of about 40 to 50 cm. The material is simply plain paper, fiber paper, sulfate paper, glassine paper, biodegradable synthetic paper, etc.).
That is, since the paper 1 in FIG. 1 is folded in the longitudinal direction, the paper 1 is folded in at least one of the surfaces 1a and 1b which are the opposite surfaces, in FIG. An adhesive 2 such as glue is applied. The paper 1 coated with the adhesive 2 is folded in half at the fold line 3 at the intermediate portion with the coated surface of the adhesive 2 inside (inner surface) to obtain the state shown in FIG. Here, the adhesive 2 is not limited to glue or glue. Further, the thickness and size of the paper used are not limited to those in the above example.

  In the present invention, the paper 1 shown in FIG. 2 is folded in two at the crease 3 and laminated in two layers before the adhesive 2 is solidified and press-molded. That is, as shown in FIG. 6, as an example, the paper 1 is passed between upper and lower molds 4 and 5 for hot pressing having a round bar shape or roll shape in cross section. When the paper 1 is passed between the molds 4 and 5, the adhesive 2 is solidified while forming the cross-sectional shape of the photo stand PS of FIG. 3 by appropriately moving the molds 4 and 5. Thus, an example of the paper-made article of the present invention is formed. In FIG. 6, 6 and 7 are guide rollers in the molding process.

  The upper and lower molds 4 and 5 illustrated in FIG. 6 have a heat roller structure at least one, preferably both, and sandwich the laminated paper 1 in FIG. As the mold 4 rotates in the clockwise direction and the lower mold rotates in the counterclockwise direction, the paper 1 in FIG. 2 travels from the right to the left in FIG.

  When the upper and lower molds 4 and 5 are rotated to move the paper 1 to the left in FIG. 6, the molds 4 and 5 are moved at least up and down, or up, down and front and back. By moving, the paper 1 is formed into a desired cross-sectional shape. That is, the dies 4 and 5 are formed so as to be movable in a necessary direction in order to form the bent portion 1A having the molding cross-sectional shape of the paper 1 and to dry the adhesive 2 at that portion.

  For example, the molds 4 and 5 are moved by moving a support frame (not shown) of the molds 4 and 5 up and down or back and forth by a hydraulic or pneumatic cylinder. In addition, although the guide roller 7 is also provided with the structure which can be moved up and down, the vertical movement function of the guide roller 6 is not necessarily required. The upward and downward movement of the guide roller 7 is to avoid interference with the bent portion 1A bent by the dies 4 and 5 of the paper 1.

  When the paper 1 of FIG. 2 passes between the molds 4 and 5 that operate as described above, the adhesive 2 is dried by the heaters of the molds 4 and 5, and at the same time, By the operation, the paper 1 is given a cross-sectional shape like the photo stand PS shown in FIG. 3, that is, it is molded. The formed paper 1 is fixed in its formed form when the adhesive 2 is dried and solidified.

  Molding of the above-described paper molded body of the present invention is an example using the upper and lower molds 4 and 5 of the roller mold, but the molding mold is not illustrated, but the shape of the molded body is engraved. Female and male molds can be used. The female and male molds in this case are also hot press molds having a heat source and the like inside.

  In the photo stand PS of FIG. 3, a photo (not shown) is stood and displayed on the standing wall portion W. In the case of a desktop calendar mount (not shown), a calendar sheet such as a moon-turner is attached to the standing wall W. According to the present invention, in addition to the above-mentioned photo stand and calendar mount, chairs, trays, containers, figurines and the like can be produced by molding paper.

  In the present invention, the calendar stand type mount CS is cut into a comb-like shape at one end side of the doubled paper 1 as shown in FIG. 4, and the spell ring Cr of the calendar paper Cp is formed by the comb-like portion Cm. When formed, the binding ring Cr and the stand-type mount CS are integrally formed (see FIG. 5).

The present invention is as described above, in which two or two double-folded papers with an adhesive on the opposite surface are bonded to each other with the adhesive, and the bonded paper is hot before the adhesive is cured. Since the adhesive was cured while being molded into a substantially L-shaped side cross section by a press and formed into the cross-sectional shape to produce a paper molded body, a used photo stand, desk calendar, etc. Without separating these constituent members, they can be sent to a process such as recycling as they are in their original form.

The perspective view of an example of the rectangular paper by the natural paper for forming this invention molded object, and comparatively thick paper. The perspective view of the state which folds and adheres the paper of FIG. FIG. 3 is a perspective view of a state in which the folded paper of FIG. 2 is press-molded as an example of a photo stand. The perspective view of an example of the paper which forms the stand type mount for calendars. FIG. 5 is a perspective view of a calendar stand-type mount on which the paper of FIG. 4 is formed. The side view which showed typically the principal part of the press molding process of the photograph stand of FIG.

Explanation of symbols

1 paper 2 adhesive 3 crease 4, 5 mold 6, 7 guide roller

Claims (10)

Adhering two or double-folded papers with an adhesive on the opposing surface with the adhesive, and cross-section with a substantially L-shaped side section by hot pressing the paper that was bonded before the adhesive was cured A paper molded body, wherein the adhesive is cured while being molded into a shape, and is molded into the substantially L-shaped side section .   When a sheet of paper is folded in half, the paper formed body sandwiches a paper string or the like as a core inside the crease, or replaces the core, or is used in combination with the core and reinforces along the crease. The paper-made molded article according to claim 1, wherein concave or convex streaks that act are inserted as ribs.   The paper molded body according to claim 1 or 2, wherein a biodegradable plastic material is used for the paper.   The paper molded body according to any one of claims 1 to 3, wherein appropriate printing is performed on an outer surface of the paper molded body.   The paper-made molded article according to any one of claims 1 to 4, wherein any one of a coarse-woven fabric cloth, a nonwoven fabric, a thin Japanese paper, and a film is laminated on the outer surface of the paper or the adhesive-coated surface.   The paper molded body according to any one of claims 1 to 5, wherein the paper molded body is any one of a photo stand, a calendar stand-type mount, a chair, a tray, and an ornament. Calendar stand type pasteboard, paper molding body according to claim 6 to form a comb-like or fork-nail-shaped ring portion for Tojikomu the calendar sheet in the upper end. Adhering two sheets of paper with adhesives on opposite surfaces or double-folded papers with the adhesive, and forming the bonded paper by hot press before the adhesive is cured A method for producing a paper molded body, wherein the agent is cured to form the paper into a molded body having a substantially L-shaped side section .   9. The method of manufacturing a paper molded body according to claim 8, wherein the molded body is any one of a photo stand, a calendar stand-type mount, a chair, a tray, and an ornament.   The method for producing a paper molded body according to claim 8 or 9, wherein the waterproof treatment or moisture proof treatment is applied.

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