JP3055837U - 3D reticulated mat - Google Patents

Abstract

(57) [Summary] [Problem] It is easy to fold and convenient for transportation and storage.
It has good ventilation and cushioning properties, and can be used as a mattress for bedding, a bed for placing luggage on the floor of a warehouse, or a filling material to be inserted between inner and outer walls of a building. To provide a three-dimensional net-like mat with high quality. SOLUTION: The surface 2 of a three-dimensional net 4 is formed by a large number of plastic linear bodies 3 being folded and densely gathered, and each linear body 3 adheres to a contact portion with each other and solidifies into a plate shape.
While providing the notch 7 from 1 to the vicinity of the back surface 22,
The position of the three-dimensional net 4 is shifted with respect to the cut 7 on the front side.
A similar cut 7 is provided in parallel from the back surface 22 to the vicinity of the front surface 21.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a highly useful three-dimensional net-like mat which can be used as a mattress for bedding, a bed for placing luggage, and a filling material to be inserted between inner and outer walls of a building.

[0002]

[Prior art]

 Elastic materials such as urethane are used in conventional mattresses for bedding. When such a mattress is folded for transportation or storage, there is a problem that it is difficult to fold because the elastic material has resilience.

[0003]

[Problems to be solved by the invention]

 The present invention is easy to fold, convenient for transportation and storage, has good ventilation and cushioning properties, and is suitable for bedding mattresses, litters for placing luggage on floors such as warehouses, or building structures. It is an object of the present invention to provide a highly useful three-dimensional net-like mat that can be used as a filler between inner and outer walls.

[0004]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the three-dimensional net-like mat of the present invention has a large number of plastic linear bodies 3 folded and densely assembled, and each linear body 3 adheres to a contact portion with each other to form a plate. A notch 7 is provided from the front surface 21 to the vicinity of the back surface 22 of the three-dimensional net 4 which is solidified, and the position is biased with respect to the notch 7 on the front side to extend from the back 22 to the vicinity of the front 21 of the three-dimensional net 4. The configuration is such that similar cuts 7 are provided in parallel.

The extruder 1 is provided with a plurality of downward nozzles 2 to heat the three-dimensional reticulated mat of the present invention in order to efficiently manufacture the same, increase productivity, and provide the same at low cost. By continuously extruding the molten thermoplastic resin downward, a plurality of linear bodies 3 are formed and lowered, and at a position below the linear bodies 3, the linear bodies 3 are slowed down before they have not yet solidified. By taking up at a speed, each linear body 3 is folded, and by utilizing their adhesiveness, the contact portions of each linear body 3 are adhered to each other and assembled to form the three-dimensional net 4 continuously. During the formation of the three-dimensional net 4, before the three-dimensional net 4 is hardened yet, the cut-outs 7 are formed by alternately inserting the interrupting plates 11 on both side surfaces thereof, and then the three-dimensional net 4 is cooled. Then solid After that, it is preferable to obtain by cutting out the interrupting plate 11 and cutting it into an appropriate size.

[0006]

【Example】

 FIG. 1 shows a three-dimensional net-like mat 20 used as a mattress for bedding according to one embodiment of the present invention. This three-dimensional net-like mat 20 is formed of a three-dimensional net-like body 4 in which a large number of plastic linear bodies 3 are folded and densely gathered, and each linear body 3 is attached to a contact portion and solidified in a plate shape. The cut 7 is provided in parallel with the two places on the front surface 21 from the front surface 21 to the vicinity of the back surface 22, and the position is deviated from the cut 7 on the front side, that is, in the middle of the two cuts 7 on the front side. A similar cut 7 is provided in parallel from the back surface 22 to the vicinity of the front surface 21 of the three-dimensional net 4.

As shown in FIG. 2, the three-dimensional net mat 20 can be easily folded at the position of the cut 7, and can be transported or stored in the folded form.

[0008] The three-dimensional net-like mat 20 of the present invention is excellent in cushioning property, and thus is most suitable as a mattress for bedding as in the above embodiment. However, since it has good air permeability and can prevent the generation of mold due to moisture, etc. It can be used not only for bedding mattresses but also for other uses. For example, it can be used as a litter for laying luggage on the floor of a warehouse or the like, thereby preventing the luggage from being moldy or luggage rot due to moisture. In addition, it can be used as a filler between inner and outer walls of a building, thereby preventing moisture from forming on the walls due to moisture.

Next, FIG. 3 shows a process of manufacturing the three-dimensional net-like mat 20 described above. First, in the drawing, reference numeral 1 indicates an extruder. The extruder 1 is provided with a plurality of downward nozzles 2 on its lower surface. In addition, the plurality of nozzles 2 are arranged to be elongated in the direction perpendicular to the drawing. The extruder 1 heats and melts a thermoplastic resin such as polypropylene, and continuously extrudes the thermoplastic resin downward from each nozzle 2 to form a plurality of linear bodies 3 and lower them as they are.

The linear body 3 formed by extrusion from the extruder 1 is taken up by a pair of take-off rolls 6 at a lower position at a lower speed than its descending speed before being solidified yet. As a result, the linear bodies 3 are folded and densely assembled to form the three-dimensional net 4 continuously while attaching contact portions to each other by utilizing the adhesiveness of the linear bodies 3. Then, the three-dimensional net 4 is cooled and solidified by being immersed in the cooling water 5.

In the process of forming the three-dimensional net 4 as described above, the cuts 7 are alternately provided on both side surfaces of the three-dimensional net 4 at the same time. That is, the notch processing devices 8 are arranged on both sides of the descending three-dimensional net 4 so as to sandwich it.

The incision processing device 8 winds a chain 10 between sprockets 9 arranged above and below, and places an interrupting plate holder 12 holding an interrupting plate 11 on the chain 10 such that the interrupting plate 11 can be protruded and retracted. A pusher 13 is provided near the upper sprocket 9 for projecting the interrupting plate 11, and a guide for returning the projecting interrupting plate 11 to a position surrounding the lower side of the lower sprocket 9 is provided. 14 is provided.

As shown in FIG. 4, the interrupting plate holder 12 has a groove 15 at a central portion, and the interrupting plate 11 is slidably inserted into the groove 15 and traverses the groove 15. A bolt 16 is attached, and the bolt 16 passes through a long hole 17 formed in the interrupt plate 11. Further, the interrupting plate 11 is provided at its side end with a projection 18 which is pushed by the pusher 13 and slides along the inner surface of the guide 14. The center shaft 19 of the sprocket 9 and the interrupting plate 11 are long in the direction perpendicular to the drawing of FIG. 3, and the sprocket 9 is attached to a plurality of positions of the center shaft 19. That is, a plurality of chains 10 are also arranged side by side, and a plurality of portions of the interruption plate 11 are supported by the interruption plate holders 12 attached to the respective chains 10. The pusher 13 and the guide 14 are provided at both ends of the interrupting plate 11 in the longitudinal direction corresponding to the projections 18 of the interrupting plate 11.

The interrupting plate 11 immediately after the upper sprocket 9 has been turned is pushed by the pusher 13 to push the three-dimensional net-like structure in an initial stage in the process of forming the three-dimensional net-like body 4, that is, before the three-dimensional net-like body 4 has yet to be solidified. Protrude toward body 4. The interrupting plate 11 presses into the side surface of the three-dimensional net 4 to form the cut 7. Then, the interrupting plate 11 descends together with the three-dimensional net 4 while being pressed into the side surface of the three-dimensional net 4. That is, the moving speed of the interrupt plate 11, that is, the moving speed of the chain 10 and the descending speed of the three-dimensional net 4 are adjusted to be equal. When the interrupting plate 11 pressed into one side surface of the three-dimensional net 4 descends by a predetermined distance, the interrupting plate 11 similarly pushes into the opposite side of the three-dimensional net 4 to cut the notch 7. Form. That is, the cuts 7 are formed alternately on both side surfaces of the three-dimensional net 4. The pusher 13 for projecting the interrupt plate 11 is operated using a sensor or a timer. The interrupting plate 11 which has been lowered together with the three-dimensional net 4 while being pressed into the three-dimensional net 4 is pulled out from the cut 7 after the three-dimensional net 4 is solidified. That is, when the interrupting plate 11 comes near the lower sprocket 9, the projection 18 of the interrupting plate 11 enters the inside of the guide 14 and slides along the inner surface of the curved guide 14. It is guided in a direction away from the three-dimensional net 4. As a result, the interrupting plate 11 is sunk into the depth of the groove 15 of the interrupting plate holder 12 and comes out of the cut 7 of the three-dimensional net 4. The interrupting plate 11 turns around the lower sprocket 9 and then moves upward again, and thereafter repeats the same process.

The solid reticulated body 4 formed by forming the cuts 7 on both sides is then pulled up from the cooling water 5, dried, and cut into an appropriate size. Thereby, as shown in FIG. 1, a three-dimensional net-like mat 20 having a rectangular plate shape and having cuts 7 alternately on both sides is completed.

As described above, when the step of providing the cuts 7 is performed simultaneously with the process of forming the three-dimensional net 4, the efficiency is extremely high and the productivity is high. However, it is also possible to provide the cuts 7 using a hot plate or a high-frequency welder after the three-dimensional net 4 has hardened.

[0017]

[Effect of the invention]

 The three-dimensional net-like mat of the present invention is as described above, and has excellent cushioning and breathability, so that it can be used as a mattress for bedding, a bed for luggage, or a filler between the inner and outer walls of the building. It is optimal and has the effect of being widely used and highly useful. In addition to this, it is possible to easily fold and stack by the cuts 7 provided on both sides thereof, so that it is very convenient for transportation and storage. In addition to the above-mentioned effects, the three-dimensional net-like mat according to claim 2 has an effect that it can be provided at a low cost because the manufacturing process is efficient and the productivity is good.

[Brief description of the drawings]

FIG. 1 is a perspective view.

FIG. 2 is a perspective view showing a folded state.

FIG. 3 is a side view showing a manufacturing process.

FIG. 4 is a partial perspective view of a cutting apparatus.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Extruder 2 Nozzle 3 Linear body 4 Solid body 5 Cooling water 6 Take-off roll 7 Cut 8 Notch processing device 9 Sprocket 10 Chain 11 Interruption plate 12 Interruption plate holder 13 Pusher 14 Guide 15 Groove 16 Bolt 17 Slot 18 Projection 19 Central axis 20 Solid mesh mat 21 Front surface 22 Back surface

Claims (2)

[Utility model registration claims] 1. A surface 2 of a three-dimensional net 4 formed by a large number of plastic linear bodies 3 folded and densely gathered, and each linear body 3 adheres to a contact point with each other and solidifies into a plate shape.
While providing the notch 7 from 1 to the vicinity of the back surface 22,
The position of the three-dimensional net 4 is shifted with respect to the cut 7 on the front side.
A three-dimensional net-like mat in which similar cuts 7 are provided in parallel from the back surface 22 to the vicinity of the front surface 21 of the mat. 2. A plurality of linear nozzles 3 are formed by providing a plurality of downward nozzles 2 in an extruder 1 and continuously extruding a thermoplastic resin heated and melted downward from each of the nozzles 2. Each linear body 3 is folded down by taking it at a lower speed than its lowering speed before solidifying the linear bodies 3 at the lower position, and by utilizing their adhesiveness, each linear body 3 is folded. The three-dimensional network 4 is continuously formed by attaching and assembling the contact portions 3 to each other, and the three-dimensional network 4 is formed on the side surfaces on both sides of the three-dimensional network 4 while the three-dimensional network 4 is not yet solidified in the forming process. The interrupting plates 11 are alternately pushed in to form the cuts 7, and then the solid reticulated body 4 is cooled and solidified, and then the interrupting plates 11 are formed.
The three-dimensional net-like mat according to claim 1, wherein the three-dimensional net-like mat is obtained by extracting and cutting into an appropriate size.