JPH03289913A - Cushion body and manufacture thereof - Google Patents

Abstract

PURPOSE:To make a manufacturing work easy for joining existing urethane foam materials, and overlapping and jointing different types of materials as per specific request by integrally bonding and fixing a spring unit, a protective layer and a cushion layer using an adhesive. CONSTITUTION:A spring unit 1 is constituted with many springs 11 and so forth laid in parallel, and the end ring portions 111a and 111b thereof are connected to each other with a helical wire 12 for forming the spring unit 1 into a flat shape. A protective layer 2 is added between the spring unit 1 and a cushion layer 3 for preventing the soft cushion layer 3 from being damaged due to the rigidity of the spring unit 1. In this example, a nonwoven cloth 21 is adopted as the protective layer 2. In addition, the springs 11 and the nonwoven cloth 21 are bonded and fixed to each other with an adhesive 41 at the spring end ring portions 111a and 111b connected with the helical wire 12. Furthermore, the cushion layer 3 comprises urethane foam 31 and nonwoven cloth 42 bonded to each other with an adhesive 42. According to the aforesaid construction, the bonding of different types of overlapped materials can easily be performed.

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Utilization!!?) This invention relates to a body including a spring unit on which a human body is placed, such as a head dress and a chair, and a method for manufacturing the same. .

(Prior art) In general, a mano dress for men and women consists of a spring unit consisting of a large number of springs arranged in parallel, a soft cushioning layer placed on the spring unit, and a cushioning effect between the throat and a soft cushion layer. A protective layer such as sisal bat, which protects the cushion, and a resin layer placed on the protective layer constitute a cushion body, and a resin material is covered with an exterior material.

The work of laminating each of the above layers and the spring unit was time-consuming and caused an increase in manufacturing costs.

Therefore, the inventor previously proposed in Japanese Patent Application No. 62-208522 that the spring unit and each layer be integrally joined using an elastic foam.

This W plan uses foamed urethane foam as a cushion layer,
This proposal has been commercially successful as it connects to the spring unit when the urethane stock solution foams.

However, this is inconvenient when there is a need to join existing urethane foam materials that do not utilize urethane foam, or when there is a desire to overlap and join five different types of materials.

(Invention or problem to be solved) The present invention provides a cushion body and its manufacturing method that facilitate the manufacturing work when there is a desire to join existing foamed urethane materials or to overlap and join different types of materials. This is what I am trying to propose.

[Structure of the Invention] (Means and Effects for Solving the Problems) In order to solve the above problems, the present invention provides a spring unit configured by arranging a large number of springs in a flat plate shape, and this spring unit. A protective layer and a cushion layer are polymerized on at least one side of the spring unit, and the protective layer and cushion layer are bonded and fixed together with an adhesive.
The manufacturing process involves uniformly pouring sticky adhesive onto the rotating roller surface, and placing a spring unit, which is made up of a large number of springs arranged in a flat plate, on a moving table. There is a process of applying adhesive on the surface of the spring unit without moving it while contacting the lower surface of the roller, and a step of applying adhesive to the surface of the spring unit, with the protective layer and cushion layer adhered sequentially or two layers in advance, to the spring unit. The spring unit l
This process increases the adhesion area with the surface of the spring that makes up the spring unit, and the spring unit and the protective layer/non-reed layer are bonded together with an adhesive to improve the adhesive strength, and the foamed urethane material is This makes it easier to join and bond different types of materials together.

(Embodiment) An embodiment of the present invention will be described below with reference to the drawings. What is shown in FIG. 1 shows a cross section of the spring body according to the present invention. 1 and protective layer 2.
The non-reed layer is 3.

The spring unit 1 has a flat plate shape in which a large number of springs 11 are arranged in parallel and end shaft portions 111a and 111b are connected to each other by a helical wire 12.

The protective layer 2 prevents the soft cushion layer from being damaged due to the rigidity of the spring unit 1, and is provided between the spring unit 7, the 7-piece 1, and the non-retard layer 3.

In the one shown in FIG. 1, a nonwoven fabric 2 is used as the protective layer 2.
1 is adopted.

Reference numeral 4 indicates an adhesive, and in FIG. 2, the spring 11 and the nonwoven fabric 21 are bonded and fixed to each other by an adhesive 41 at a portion where the sprink end ring portions 111a and 111b are connected by a helical wire 12.

The urethane foam layer 3 is made of urethane foam 31, and the urethane foam 31 and the non-woven fabric 21 are bonded together using an adhesive 4.
2. It is fixed with adhesive.

As urethane foam 31, it has less stiffness.
．． A material with a high density of about 0.3 g/cm3 or higher is used.

The adhesive 4 may be a long and sticky material that is flexible enough to bend even when cured, such as a reactive tan-based adhesive, SBR, or NBR. Synthetic com type adhesive, E~゛A type po,! A tomel-type adhesive is preferred.

Spring unit 1 and protective layer 2.・Non-reed layer 3
To explain the method of adhering with the rotating roller 8 with reference to FIG.
The adhesive 4 is applied to the surface of the spring unit 1 by pouring the melted EV, A-based adhesive 81 onto the surface of the spring unit 1 from above and moving the glue unit 1 to the lower surface of the roller 8. Next, the foamed horsetail foam 31 to which the unlined cloth 21 has been fixed with adhesive 42 is attached to the spring unit 1.
Passing under the rotating pressure roller 10 placed on the surface of
The protective layer 2 and the cushion layer 3 are crushed in the thickness direction to form a curved surface with the spring end ring portion 111 to increase the bonding area.The adhesive 41 is applied to the spring end ring portion 111 as shown in FIG. It is firmly adhesively fixed to the protective layer 2 so as to cover the arc-shaped curved surface of the portion 111.

FIG. 3 shows that when a coarse non-woven fabric 21 is used as the protective layer 2, the adhesive 43 is impregnated into the non-woven fabric 21, and the urethane foam 31, the non-woven fabric 21 and the spring uni-sol.
This shows a case in which the two can be bonded together.

In Fig. 4, urethane foam with different hardness is used as the urethane foam 31.The hardness increases sequentially from urethane foam 31a to 31b and 31c, and in comparison, the bottom part is soft and the peripheral part is hard. This is what is being set.

5 and 6 show an example of a cushion body that is integrally joined including the exterior body in the second embodiment. The layer 3 and the exterior body 5 form a structure, each of which is adhesively fixed with an adhesive 4.

The spring unit 1 has a flat plate shape in which a large number of springs 11 are arranged in parallel and end shaft portions 111a and 111b are connected to each other by a helical wire 12.

The protective layer 2 is made of a sisal pad 21, and the adhesive 41 is applied to the sisal pad 21 and the end shaft portion 11 of the spring 11.
The cushion layer 3 is made of cotton 3+ and urethane foam 3, which are bonded together with an adhesive 43.

The exterior body 5 is made of soft urethane foam 51.
2 and 53 are sandwiched together and quilted 54 is applied. This exterior body 5 is adhered to the surface of the cushion layer 3 with an adhesive 44.

On the side surface of this cushion body, a gusset 6 is appropriately arranged as shown by the two-dot chain line in FIG.

According to this embodiment, the manufacturing operation of the pinerest becomes easier.

In each drawing, the bonding area 42 is shown as a rectangular flat plate, but when spraying an emulsion type adhesive, applying a solvent type adhesive with a brush or roller, or applying a hot melt type adhesive. When disposed, it may appear in the form of a film, dots, strips, etc., and the form of adhesion is not limited.

[Effects of the Invention] As described above, the present invention includes a spring unit configured by arranging a large number of springs in a flat plate shape, a protective layer and a cushion layer superimposed on at least one surface of this spring unit, and Uni Soto, protective layer and cushion layer are bonded and fixed together with adhesive.
The manufacturing process involves the process of uniformly pouring sticky adhesive onto the surface of a roller that rotates once, and the process of placing a spring unit made up of a large number of springs arranged in a flat plate on a moving table. A step of applying an adhesive onto the surface of the spring unit after placing it in contact with the lower surface of the roller and moving it, and a step of applying an adhesive onto the surface of the spring unit while making contact with the lower surface of the roller, and a step of applying an adhesive to the surface of the spring unit after adhering the protective layer and the cushion layer one after another or two layers in advance. a step of placing it on the surface of the spring unit;
Next, without moving the lower surface of the rotating pressure roller, this pressure roller presses the protective layer and the cushion layer against the spring unit, thereby increasing the adhesion area with the spring surface constituting the spring unit. By bonding and fixing the protective layer and cushion layer together with an adhesive, the adhesive strength is improved, making it easier to join two foamed urethane materials or to overlap and bond different types of materials. .

[Brief explanation of drawings]

FIG. 1 shows an embodiment of this invention, and FIG.
2 is a sectional view showing the connection between the spring and the foam cushion layer, FIG. 3 is a sectional view showing another connection between the spring and the foam cushion layer, and FIG. 4 is a sectional view showing the connection between the spring and the foam cushion layer. 5 is a sectional view showing another type of body cushion layer, FIG. 6 is an enlarged sectional view of the body shown in FIG. An explanatory diagram of an example of the adhesion process, Fig. 8 is a spring uniform
FIG. 3 is a cross-sectional view showing the state of adhesion between the sheet 1 and the protective layer 2. FIG. Code 1: Spring unit, 2: Protective layer 3: Cushion layer 4: Adhesive 5: Exterior body 8: Roller 9: Melted adhesive 10...pressure roller 11...spring 12...helical wire wharf 58! ] Amend it with the Touge Etsu Sai procedural amendment. (2) Add the drawing to the attached sheet and make additional corrections to Figure 9. 3゜Case Indication Patent Application No. 2-9131, Title of Invention: Cushion body and its manufacturing method Relationship with the case concerning amendments Patent Applicant Address: 31-15 Sakuragaoka-cho, Shibuya-ku, Tokyo Name (AO3)
To France Nodo Co., Ltd. 5゜Voluntary amendment Subject of amendment (1) Specification (2) Contents of drawing amendment

Claims (2)

[Claims] (1) A spring unit composed of a large number of springs arranged in a flat plate, a protective layer and a cushion layer superimposed on at least one side of this spring unit, and these spring units, the protective layer, and the cushion layer bonded together with an adhesive. A cushion body characterized by being integrally fixed with adhesive. (2) The process of uniformly flowing sticky adhesive onto the rotating roller surface, and the spring unit, which is made up of a large number of springs arranged in a flat plate, is placed on a moving table and moved while being in contact with the bottom surface of the roller. a process of applying adhesive on the surface of the spring unit while rotating, a process of placing a protective layer and a cushion layer in sequence or two layers pre-glued on the surface of the spring unit, and then rotating pressure. This is a process in which the pressure roller presses the protective layer and the cushion layer against the spring unit while moving the lower surface of the roller, thereby increasing the adhesion area with the spring surface constituting the spring unit. A method for manufacturing a cushion body, characterized in that the layers are bonded and fixed together with an adhesive.