JPH05124000A - Interior laminated sheet member fusing method and device therefor - Google Patents

Abstract

(57) [Summary] [Purpose] The outer skin 24 and the heat-sealing film 22 can be polymerized and fusion-bonded and cut into a fixed size very easily, and cost reduction and maintenance-free can be achieved.
It is an object of the present invention to provide a method and an apparatus for fusing a laminated sheet material 30 for an interior, which has a great practicality and which can improve the fusion bonding strength at the time of hot press molding of a base material 31 later. [Structure] The interior laminated sheet material 30 is cut in a non-contact manner by blowing hot air along the cut line X of the interior laminated sheet material 30 in which the skin 24 and the heat-sealing film 22 are superposed, and at the same time A hot air blower 41 was provided to heat-bond the outer skin 24 of the interior laminated sheet material 30 and the cut end edge portion 30a of the heat-sealing film 22 to each other.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for fusing a laminated sheet material for an interior, in which a skin and a heat-sealing film which are mainly used for an interior article such as a ceiling of an automobile are laminated.

[0002]

2. Description of the Related Art A production line for molded ceiling interior parts is shown in FIG.
As shown in FIG. 3, an automatic skin spreading device 1 and a cutting device 2 are installed. Then, the skin 5 and the heat-sealing film (hot melt film) 6 which are wound around the upper and lower feeding rollers 3 and 4 of the automatic skin spreading device 1 and set in a roll shape are continuously drawn out, and both of them are subjected to the temporary laminating step 7. At the same time as it is fed between the upper and lower rollers 8 and 9 to be overlapped with each other, the heat-sealing film 6 is heat-sealed to the back surface of the outer skin 5 by heating by the heat roller 9 on the lower side thereof to produce the laminated sheet material 10 for interior. This is once wound around the winding roller 11. The wound laminated sheet for interior 10 is set in the cutting device 2 in the next step, fed out, and cut into a certain length by a pair of upper and lower cutters 12, 12.

On the other hand, there is known an automatic skin spreading and cutting device 15 as shown in FIG. This is one in which spreading and cutting are performed by one device, and the skin 5 and the heat-sealing film 6 which are wound around the upper and lower feeding rollers 3 and 4 and set respectively in a roll shape are continuously drawn out, and both of them are paired up and down. The laminated sheet material 18 for interior is made by sending it between the pressure contact rollers 16 and 17 and superposing it, and the heater plate 19 with the pair of upper and lower cutting blades 19a is directly formed.
9 and then heat cut press there to cut the laminated sheet material for interior 18 to a certain length dimension, and at the same time, the heat fusion film 6 of the width portion heated and pressed by the upper and lower heater plates 19 and 19 of the skin 5 is cut. It is heat fused to the back side.

The interior laminated sheet material 10 or 18 cut to a predetermined size as described above is laminated with a base material (for example, resin felt made of fibers mixed with a phenol resin as a binder), which is not shown. Then, it is set in a molding die and subjected to hot press molding to obtain a molded interior article such as a ceiling of an intended automobile.

[0005]

However, the above-mentioned conventional method and apparatus for cutting a laminated sheet material for interior use have the following problems.

That is, in the former case shown in FIG. 5, after the outer skin 5 and the heat-sealing film 6 are heat-sealed in the temporary laminating step 7 of the automatic skin-spreading device 1, they are reset in the cutting device 2. Since it requires two complete steps such as cutting into a fixed size, the work is troublesome, the cost is high, and the heat-sealing film 6 is entirely fused to the outer skin 5 in the temporary laminating step 7. There has been a problem that the heat-sealing film 6 is impregnated into the skin 5 over a wide range, the skin 5 becomes hard and the feel is bad, and the fusion strength with the subsequent substrate at the time of hot press molding is lowered.

In the latter case shown in FIG. 6, the heat-bonding press can perform the polymerization adhesion of the outer skin 5 and the heat-sealing film 6 and the sizing cut in one step. Heater plate 1 with 19a
The heat-melted film 6 and the heat-melted material of the skin 5 were deposited on 9 and 19, and maintenance such as removal and cleaning work was difficult.

The present invention has been made in view of the above circumstances, and it is an object of the present invention that the skin and the heat-sealing film can be polymerized and fusion-bonded and cut into a predetermined size very easily, thereby reducing the cost and maintenance-free. In addition, it is possible to provide a method for fusing a laminated sheet material for an interior, which has a large practicality and which can increase the fusion strength at the time of hot press molding with a base material. It is an object of the present invention to provide a fusion cutting device for interior laminated sheet material useful for carrying out the method for melting interior laminated sheet material.

[0009]

[Means for Solving the Problems] In order to achieve the above-mentioned object, a method for fusing an interior sheet material according to the present invention provides a laminated interior sheet material having a skin and a heat-sealing film superposed on each other. Non-contact cutting by blowing hot air along with, while the hot air of the hot air blowing device heat-bonds the cut end edges of the skin of the laminated sheet material for interior and the heat-sealing film to each other. And

Further, the fusing device for interior sheet material of the present invention is adapted to blow the interior sheet material by blowing hot air along the cut line of the interior laminated sheet material in which the skin and the heat-sealing film are superposed. It is characterized in that it is provided with a hot-air spraying device that cuts in a non-contact manner and, at the same time, heat-bonds the cut end edges of the skin of the interior sheet material and the heat-sealing film to each other by the hot air.

[0011]

According to the method and apparatus for fusing the interior sheet material having the above-mentioned structure, the interior laminated sheet material is constructed by superposing the skin and the heat-sealing film. The interior sheet material is cut in a non-contact manner by blowing hot air along the cut line of the interior laminated sheet material with a hot air blower, and at the same time, the skin of the interior laminated sheet material and the heat-sealing film are produced by the hot air. The edges of the cut ends of and are heat fused to each other.

By this, the temporary laminating step of the laminated sheet material for interior can be omitted, and the joint fusion of the skin and the heat fusion film and the sizing cut can be completed in one step, and the work is easy and the cost can be reduced. You will be able to plan. Further, since the heat-sealing film is fused to the skin only at the end face edge portion, the heat-sealing film does not impregnate a large amount on the skin side over the entire surface as in the conventional case, and it is possible to prevent deterioration of the feel of the skin. At the same time, the fusion strength at the time of hot press molding with the subsequent base material is improved. Further, since the hot-air spraying device is not in contact with the skin and the heat-sealing film, the melt does not adhere to the hot-air spraying device, and maintenance is unnecessary.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. For convenience of description, the interior cutting sheet material fusing apparatus used in the interior sheet material fusing method of the present invention will be described first.

First, in the fusing apparatus 20 for laminated sheet materials for interiors shown in FIG.
2 is wrapped around. The heat fusion film 22 is made of nylon and has a melting point of about 180 degrees.
The heat-sealing film 22 has no self-combustibility and has a characteristic of becoming a glass-like hard bun when melted.

A skin 24 is wound around the lower feeding roller 23. The outer skin 24 is a non-woven fabric made of polyester and has a melting point of about 240 degrees. This epidermis 24
Is not self-sustaining and turns into a dark brown mass when melted.

A pair of upper and lower press-contact rollers 25 and 26 are provided as a feeding device for superposing the heat-sealing film 22 and the outer skin 24 on each other and feeding them. This pressure roller 25,
Behind 26 is a cutting device 4 for the laminated sheet material 30 for interior.
0 is provided. This cutting device 40 includes a hot air spray device 41 such as an industrial dryer, and the hot air spray device 41.
42 and motor 43 as drive means for moving the interior laminated sheet material 30 along the cut line X
And a guide rail 44 slidably supporting the hot air blowing device 41.

As shown in FIG. 3, the hot air blower 41 is provided with a tip nozzle 41a having a flat and flat shape. As shown in FIG. 2, the hot air blowing device 41 blows hot air from above the heat-sealing film 22 of the laminated sheet material for interior 30 in a non-contact manner, so that the skin 24 and the heat-sealing film 22.
Melt and cut. Further, at the same time, the hot-melting film 22 is melted by the hot air to heat-bond the cut end edge portion 30a of the interior laminated sheet material 30.

A method of fusing interior laminated sheet material using the fusing device thus constructed will be described. The heat fusion film 22 of the upper feeding roller 21 and the skin 24 of the lower feeding roller 23 are respectively fed, and both of them are pressed into contact with each other by a pressure roller 25,
The laminated sheet material for interior 30 is formed by passing the sheets through 26 and overlapping them. The laminated sheet material for interior 30 is further sent to the lower surface of the cutting device 40. Here, the motor 43 of the cutting device 40 is driven to drive the hot air blowing device 41 via the chain 42.
While reciprocating along the cut line X in the width direction of the interior laminated sheet material 30, hot air is blown from the tip nozzle 41a of the hot air blowing device 41 to produce the interior laminated sheet material 3
At the same time as fusing cutting 0 to a specified length dimension without contact,
By the hot air, the cut end edge portion 30a of the outer skin 24 of the laminated sheet material for interior 30 and the heat-sealing film 22 are heat-welded to each other.

With this, the temporary laminating step of the laminated sheet material for interior 30 can be omitted, and the bonding and fusion of the outer skin 24 and the heat fusion film 22 and the sizing cut can be completed in one step. Can be reduced. Further, since the heat-sealed material of the fusion film 22 and the skin 24 is not deposited, it is maintenance-free.

The laminated sheet material for interior 30 cut to a predetermined size as described above has the base material 3 as shown in FIG.
1 is set in the molding dies 50a and 50b so as to be overlapped with 1 and subjected to hot press molding, and at the same time trimmed by the cutting blade 51 to obtain an interior part such as a ceiling of a car, a door trim, a rear parcel and the like. When the interior product is hot-pressed, the interior laminated sheet material 30 fuses the heat-bonding film 22 to the skin 24 only at the cut end edge portion 30a as described above, and thus the heat-bonding film as in the prior art. Since 22 is not impregnated in a large amount on the skin 24 side over the entire surface, the heat fusion film 22 is sufficiently adhered to the skin 24 and the base material 31 during the hot press molding, and the both are melted. Wearing strength will be improved.

[0021]

EFFECT OF THE INVENTION Since the method and apparatus for fusing a laminated sheet material for interiors of the present invention is constructed as described above, it is possible to very easily polymerize and cut the skin and the heat-sealing film into a fixed size. Therefore, cost reduction and maintenance-free can be achieved, and the fusion strength at the time of hot press molding of the subsequent base material can be improved, which is highly practical.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a fusing device for a laminated sheet material for interior according to the present invention.

FIG. 2 is a sectional view of an essential part of the embodiment.

FIG. 3 is a perspective view of a hot air blowing device according to the above embodiment.

FIG. 4 is a cross-sectional view of a state in which a laminated sheet material for interior is placed on a hot press molding die for an interior article in which a base material is overlaid.

FIG. 5 is a schematic view showing a conventional automatic skin spreading device and cutting device for laminated sheet materials for interiors.

FIG. 6 is a schematic view of another conventional device for automatically cutting and spreading a skin of a laminated sheet material for interior.

[Explanation of symbols]

22 ... Heat-fusion film, 24 ... Skin, 30 ... Laminated sheet material for interior, 30a ... Edge of cut end, 41 ... Hot air blower, X ... Cut line.

Claims (2)

[Claims] 1. A laminated sheet material for interior, which is obtained by laminating a skin and a heat-sealing film, is cut in a non-contact manner by blowing hot air along a cut line of the laminated sheet material for interior, and at the same time, the hot air blowing is performed. A method for fusing an interior sheet material, which comprises heat-sealing the edges of the cut end of the skin of the laminated sheet material for interior and the heat-sealing film with the hot air of the vessel. 2. The interior sheet material is cut in a non-contact manner by blowing hot air along a cut line of an interior laminated sheet material in which a skin and a heat-sealing film are superposed, and at the same time, the interior air is cut by the hot air. A fusing device for interior laminated sheet material, comprising a hot air blowing device for mutually heat-sealing cut edge portions of the skin of the sheet material and the heat-sealing film.