JP2002145327A - Cushion material whose curved form can be kept - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow a cushion material which behaves to fit a product requiring a cushioning effect as if the cushion looks soft to be provided although the cushion to be used for protecting the product in a heavy cylindrical object requires hardness to some degree. SOLUTION: A flat plate is formed with a recess and a protrusion. Two such plates are used as a set to be combined and curved. A fact that if they are joined with such rigidity that a shift occurs their forms can be kept by contact resistance on contact surfaces is utilized.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cushioning material having a structure capable of maintaining a curved state when a cushioning material is used for protecting products of a cylindrical heavy product.

[0002]

2. Description of the Related Art Conventionally, wood, rubber, paper, synthetic resin, etc. have been mainly used as a flat-shaped cushioning material.

However, among the methods of using these products, as a cushioning material used for the purpose of superimposing and storing a cylindrical heavy object such as an iron coil or protecting the product in a transportation process, a flat plate is mainly used. Shaped things have been used,
In that case, as shown in FIG. 1, an appropriate bending was required so as to adapt to the product.

In the conventional method, when the cushioning material has a certain degree of hardness (HDPE, PP, etc.) and is mounted on a product as shown in FIG. 4, in order to prevent bouncing, rotation, slipping, etc. Workability is poor unless the terminal of the cushioning material is fixed to the product with tape, etc.In addition, with a simple fixing method with adhesive tape, the restoring force of the cushioning material causes peeling off from the product, etc. Each time, it is necessary to confirm the position of the cushioning material, which is extremely inconvenient.

[0005] In order to solve these problems, if a heavy material is superimposed on a material such as rubber having a low hardness so as to conform to the outer periphery of the cylinder, the contact surface is greatly deformed. From the viewpoint of product protection, a method of increasing the thickness of the cushioning material or increasing the width of the cushioning material in order to increase the contact area has been adopted.

[0006] However, these methods have caused the unit price of the cushioning material product to be high.

[0007] In addition, for example, when supplied as a product curved in a circular shape from the beginning, it is a factor that increases the transportation cost and the storage space, and has been of little interest.

Further, as shown in FIG. 9, when a composite structure is used to maintain a curved shape and a metal such as iron which is easily plastically deformed is applied to the inside, a linear original material is considered due to the nature of the metal plate. It is difficult to return to the shape, and it is not preferable from the viewpoint of recycling.

[0009]

The object of the present invention is to develop a contradictory product having a certain degree of hardness, being well bent and conforming to a cylindrical shape, being hard and easy to bend.

[0010]

According to the present invention, as shown in FIG. 2, when both ends of a flat plate are curved downward, the upper surface extends in the longitudinal direction and the lower surface utilizes the force of contracting. A cylindrical shape that requires a cushioning material with a minimum required cross-sectional area that maintains a curved shape due to the contact resistance of the contact surface and that can be disposable without lowering the hardness of the material of the cushioning material. Increased buffering effect on products and construction efficiency.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 5, a synthetic resin product having a certain degree of elasticity and having a shape as shown in FIG.

When this product is curved, it has a shape that is vertically displaced from the joint boundary surface 3 as shown in FIG.

[0013] For this reason, for example, a plate-like product that is easily bent can be obtained even when the grooves are engaged with each other so that the joining state becomes loose. In addition, when the engagement of the contact joining surface is made to a certain extent and when the curved surface is bent so as to deviate from the joining surface 4 as shown in FIG. 2, unless a large external force is applied due to its frictional resistance. , Leaning on the shape as if maintaining that state.

Although depending on the material used, even in the case of LDPE having a relatively small coefficient of friction, the contact resistance of the entire contact area in the longitudinal direction is prevented from returning to the original shape, so that the shape as it is can be maintained. Will be.

[0015] Possible materials for these cushioning materials include LDPE, HDPE, PP, and materials obtained by mixing EVA with these materials.

In the case of processing into an uneven shape like the cross-sectional shape shown in FIG. 7, integration can be easily performed in secondary processing such as passing through the pressure roller 5 shown in FIG. In this case, it is preferable to engage with a compression force of about 100 KG to 200 KG.

In this process, as shown in FIG. 8 (4), when the central portion is fused in the longitudinal direction or a double-sided adhesive tape or the like is used to partially fix it, even if it is used repeatedly, it can be buffered even in repeated use. Deviation due to displacement of the upper and lower members of the material can be prevented.

Incidentally, if the shape of these irregularities is continuous extrusion molding, it can be processed in any manner depending on the shape of the mold, and does not lead to an increase in product cost.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIGS. 1 to 4, when a cushioning material 2 is applied to a cylindrical heavy object 1, the cushioning material 2 is curved in advance as shown in FIG. 2 and is mounted so as to cover it as shown in FIG. In this case, as shown in FIG. 4, an unstable state due to the rebound of the cushioning material 2 is prevented, and the cushioning material 2 is curved, so that it can be stably applied to the cylindrical heavy object.

According to the conventional single-plate-shaped cushioning material, if the hardness is maintained to a certain degree, it is difficult to bend by that much, and in the case where the cushioning material must be applied in a deformed surface shape, handling is inconvenient. However, in this case, it can be deformed in advance so that it is compatible with products that require a buffer effect, so rotation, displacement, peeling, etc. can be minimized, and the hardness up to now Since it is easy to bend and maintain the cross section without increasing the cross-sectional area of the cushioning material, the cushioning material can be supplied easily and inexpensively.

[Brief description of the drawings]

FIG. 1 is a reference diagram when a cushioning material is effectively applied to a heavy cylinder.

FIG. 2 is a longitudinal sectional view showing a state in which the present cushioning material is bent.

FIG. 3 is a reference diagram of a positional relationship of a cushioning material when cylindrical heavy objects are superimposed.

FIG. 4 is a reference diagram of a construction process in the case of a conventional cushioning material for a cylindrical heavy object.

FIG. 5 is a perspective view showing a combined state of the cushioning material.

FIG. 6 is a perspective view showing a shape and appearance of a single unit before the present cushioning material is combined.

FIG. 7 is a reference view showing the shape of the uneven portion when the combination of the present cushioning material is performed by upper and lower pressure bonding.

FIG. 8 is a reference diagram in the case of mechanically combining the cushioning materials.

FIG. 9 is a reference diagram when a composite material system is used.

[Description of Signs] 1 Cylindrical heavy object 2 Buffer material 3 Joining boundary surface 4 Double-sided tape 5 Pressure roller 6 Metal plate

Claims (1)

[Claims] 1. A buffer characterized by laminating a plurality of synthetic resin products processed into a shape as shown in FIG. 7 and maintaining deformation such as curvature by contact resistance of respective joining grooves and contact surfaces. Wood.