JPH08244840A - Housing-unit-covering method - Google Patents

Abstract

PURPOSE: To provide a housing-unit-covering method which requires little manual operation, ensures efficient covering even though a product is large, and requires no conventional bag-making processes. CONSTITUTION: Films are drawn out from a pair of original rolls, 21 and 31, of body-wrapping films 2 and 3, erected in front of one of the sides of a housing unit 1 with a space, which is slightly longer than the width of the side, left between them, the front ends of the films are joined together, and while conveying a housing unit 1 between the pair of original rolls, 21 and 31, the housing unit l is covered all the way round the sides with the body-wrapping films which are successively drawn out. Thereafter the rear ends of the covering films are joined together and also they are cut off the original rolls. Subsequently a film is drawn out from an original roll of top-plate-wrapping film, arranged in front of and above the housing unit 1 and in the direction of the width of the unit, the top-plate-wrapping film and the upper ends of the body-wrapping films covering the housing unit all the way round its sides are joined, and then the top-plate wrapping film is cut off its original roll.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for covering a manufactured housing unit for protecting the housing unit from rain and dew.

[0002]

2. Description of the Related Art A manufactured residential unit is made into a square bag shape with vinyl chloride resin sheet, etc. to prevent it from getting wet with rain dew or getting dirty during transportation from a manufacturing plant to a construction site or temporary storage. It was covered with a bag-making product. This rectangular bag-shaped object is used as a disposable bag or a carrying bag. Also, although not as large as a residential unit, for example,
For covering products stacked on a pallet, a synthetic resin bag 8 in which a tubular synthetic resin film 80 is preliminarily formed into a rectangular bag shape as shown in FIG.
As shown in, the product 9 stacked on the pallet 91 was covered from above.

Further, as shown in FIG. 12, the stacked products 9
Stretch wrapping is also performed in which the film is wrapped with a weakly adhesive film 81.

[0004]

The housing unit generally has a height of about 3 m, and its width and length are sizes composing one unit of the housing. It takes several manpower and time to spread and cover a synthetic resin bag on such a large product,
Workability is poor and work efficiency is poor. Further, it takes a lot of time and labor to manufacture such a large bag by processing the film, and a storage place for the bag is required, which is very disadvantageous in terms of efficiency and economy.

Further, stretch coating of a large product such as a housing unit requires a large-scale device for winding the product and a coating device for the upper surface, which is not practical.

The present invention solves the above-mentioned problems of the related art, requires almost no manpower, and can efficiently coat a product even though it is a large product. An object of the present invention is to provide a method for covering a housing unit that does not include

[0007]

SUMMARY OF THE INVENTION A method of covering a housing unit according to the present invention comprises a pair of body windings erected in front of one side surface of the housing unit so as to be rotatable about an axis with a space slightly longer than the width of the housing unit. Of unwinding a film from an original roll of a film for film and joining the starting end portions of the film together, and moving the housing unit between the pair of original rolls, while sequentially feeding the film, the housing unit After coating the peripheral side surfaces of the housing, the coating end portions of the film are joined together and separated from the original roll, and in the width direction of the housing unit above the housing unit, the housing unit can be rotated around the axis. The film is unwound from the roll of the film for the top plate arranged in the above, and the film for the top plate and the upper edge portion of the body film for covering the peripheral side surface of the housing unit are separated from each other. After combined, it is intended to encompass a process for dissecting the sheet roll of the top plate film.

The body roll film and the top plate film used in the present invention are both made of synthetic resin, and are made of low density polyethylene, high density polyethylene, linear low density polyethylene, polypropylene, ethylene-vinyl acetate copolymer. Such as a polyolefin resin, a mixed resin of two or more kinds of these, a film of vinyl chloride resin, or a uniaxially stretched polypropylene film or a high-density polyethylene film, and a flat yarn finely cut along the stretching direction, Examples thereof include a woven fabric made of split yarn and a non-woven fabric laminated with the above film.

The above film has a thickness of 50 to 200.
It is preferably μm. If it is thinner than 50 μm, it tends to be broken, and if it is thicker than 200 μm, it becomes heavy and it becomes difficult to bond by heat fusion. In addition, the heat fusion temperature for joining is preferably 200 ° C. or lower because work efficiency is good.

To bond the films to each other, for example, a hot melt adhesive may be applied to the bonding parts of the films in advance, and the bonding parts may be overlapped and heated to bond them, but the films themselves may be bonded by heat fusion. It is more efficient. According to this method, the films can be cut in a molten state when they are heat-sealed.

Particularly, when heat-sealing the body-wrapping films at the rear end of the housing unit, if the film on the side of the original roll is cut off in the molten state, the end portions of the pair of body-wrapping films are joined together. And the coating of the next residential unit can be performed.

If the width of the body-wrapping film is made longer than the height of the housing unit by about 5 cm or more, the film in this portion will lie down on the top plate surface, and the work of joining this with the top-plate film can be facilitated. Therefore, it is preferable.

In carrying out the present invention, the pair of body-wrapping films and the heat-sealing device may be moved without moving the housing unit. Is constant and can be placed on the production line by moving the housing units, which is efficient.

After covering the surroundings of the housing unit with the body-wrapping film, that is, the front surface, both side surfaces, and the rear surface, the top-wrapping film may be covered and heat-sealed with the body-wrapping film. It is efficient to perform heat fusion while covering the top surface of the housing unit with the film for the top plate in parallel with the covering work from the front surface to the side surface of the housing unit with the film.

When the thickness of the body-wrapping film covering the periphery of the housing unit is large or the material is strong, as shown in FIGS. 4 and 5, the upper end of the body-wrapping film is located above the top plate. To become the rising portions 22 and 23. In order to cause the rising portions 22 and 23 to lie down on the top plate surface, when hot air of about 70 ° C. is blown from the outside of the film toward the top plate surface, the film softens and can be easily laid down on the top plate surface. Therefore, the film for the top plate is placed on this, and the joining work by heat sealing or the like becomes easy.

[0016]

Operation: While the housing unit pushes the pair of body-wrapping films whose ends are joined to each other, the front surface, both side surfaces and the rear surface of the housing unit are covered. The top plate film is placed on the upper surface of the housing unit whose periphery is covered with the body film, and the upper end of the body film on the front side of the housing unit covers the top end of the film for the roof plate on both sides of the housing unit. The upper end of the body roll film is joined to both side edges of the top plate film to cover the entire housing unit except the bottom surface.

Therefore, it is not necessary to process the film into a bag according to the size and shape of the housing unit, and the work of unfolding and covering the bag is unnecessary. Further, by fixing the film for the body roll and the top plate and the joining device and moving the housing unit, the covering work can be performed on the production line.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the housing unit coating method of the present invention will now be described with reference to the drawings. 1 to 3 are plan views showing an embodiment of a method for covering a housing unit according to the present invention. In FIG. 1, reference numeral 1 denotes a housing unit, which is transferred by a roller conveyor (not shown) in the direction of arrow A at a speed of 5 m / min. On both front sides of the transfer direction of this housing unit 1,
A pair of original rolls 21 and 3 wound with body-wrapping films 2 and 3 made of linear low-density polyethylene having a thickness of 100 μm
1 is erected, and the end portions of the body-wrapping films 2 and 3 fed from the pair of original fabric rolls 21 and 31 are joined by heat fusion. Reference numeral 41 is a heat fusion portion.

51, 51 'are pinch rolls, 52, 5
2'is a guide roll, 53 and 53 'are seal bars,
These are joint units 5, 5 '. The pair of joining units 5 and 5'disposed on both sides of the housing unit 1 can be moved toward and away from each other by a moving device (not shown).

When the joined body-wrapping film is transferred while being pushed by the front surface of the housing unit 1, as shown in FIG. 2, the body-wrapping films 2 and 3 from the pair of original rolls 21 and 31 are pinch rolls 51 and 51 ', respectively. Is pulled out through
The front surface and both side surfaces of the housing unit 1 are covered. The photocells 54, 54 'detect that the rear end of the housing unit 1 has passed the guide rolls 52, 52', and the housing unit 1
Pauses. Subsequently, as shown in FIG. 3, the joining units 5 and 5'approach each other, and both the body-wrapping films 2 and 3 come into contact between the pinch rolls 51 and 51 'and the guide rolls 52 and 52'.

When the seal bars 53 and 53 'heated to 140 ° C. are pressed in this state for 2 seconds, both body-wrapping films 2 and 3 are heat-sealed, and in the molten state, the housing unit 1 side and the original rolls 21 and 31 are melted. The body-wrapping film 4 on the side is separated. The body winding film 4 on the side of the original rolls 21 and 31 is separated from the housing unit 1 in the state shown in FIG. In this way, the periphery of the housing unit 1 is covered, and the housing unit 1 is transferred again.

4 to 6 are side views showing a process of covering the upper part of the housing unit 1 whose periphery is covered with the body winding film 4 with the top plate film 6, and FIG. 7 is an enlarged view of the main part of FIG. A sectional view and FIG. 8 are enlarged sectional views of an essential part of FIG. As shown in FIG. 4, while the housing unit 1 whose periphery is covered is transported by the roller conveyor 10 in the direction of arrow A, the top plate film 6 arranged in the width direction of the housing unit 1 above the housing unit 1 ( The top plate film 6 was fed out from an original roll 61 of a linear low-density polyethylene film having a thickness of 100 μm, and was blown from the hot air blower 73 to the upper end portion of the body winding film 4 on the front side of the housing unit 1, that is, the rising portion 22. Apply hot air of 70 ° C to the surface of the sealer receiving plate 70 placed on the top plate, place the end of the film 6 for the top plate on this, and press the seal bar 7 at 140 ° C for 2 seconds to wind the body. The upper end of the front surface of the film 4 and the end of the top plate film 6 are heat-sealed.

The sealer receiving plate 70 is made of a heat-resistant material such as silicone rubber on the upper surface, moves in the direction of arrow B only when sealing the rising portion of the film on the front side, and heat seals the portion, and then in the direction of arrow C. Retreat to. Reference numeral 65 is a pressing roll.

Subsequently, hot air of 70 ° C. is blown toward the top plate surface by a hot air blower (not shown) to the rising portions 22 of the body-wrapping film 4 that covers both side surfaces of the housing unit 1, and this is applied to the top plate surface. Then, both sides of the top plate film 6 superposed thereon are side-sealed by heat rolls 71 (FIG. 5).

Further, when heat-bonding the raised rising portions 22 and 23 of the body winding film 4 on the front and rear sides of the housing unit 1 and the top plate film 6 by heat fusion,
It is preferable to dispose a heater receiving plate 70 made of, for example, silicone rubber underneath because the adhesion between the seal bar 7 and the film 6 is improved.

Further, as shown in FIG. 6, the housing unit 1
When the rear end portion comes to the position of the seal bar 7, the rising portion 23 of the rear surface side film of the housing unit 1 is pressed by the top plate film 6 and is tilted to the rear side of the housing unit 1.
At this time, the housing unit 1 is temporarily stopped, and at the same time, the sealer receiving plate 70 is moved forward to the lower portion of the rising portion 23 again, and the rear end portion of the body-wrapping film 4 is tilted to the side opposite to the top plate.
The rising portion 23 and the top plate film 6 are heat-sealed by the seal bar 7, and the top plate film 6 on the side of the original roll 61 is melt-fused. The covering of the housing unit 1 is completed as described above. FIG. 9 is a perspective view of the house unit 1 with the covering completed, and 62, 63, and 64 are seal portions.

In the above embodiment, the coating process around the housing unit and the coating process of the top plate portion are separately described for convenience of description. However, for the top plate immediately after the coating of both side surfaces of the housing unit is started. When the coating of the film is started, the vertical position of the coated body-wrapping film is not displaced and the coating can be completed in a short time and in a short distance.

[0028]

EFFECTS OF THE INVENTION The method of coating a housing unit according to the present invention is configured as described above, and it is not necessary to process the film into a bag in accordance with the size and shape of the housing unit, and a bag storage location is also unnecessary. Further, the work of unfolding the bag and covering it is not necessary, and although it is a large product, it requires almost no manpower and can be efficiently covered. Further, by fixing the body roll film, the top plate film and the joining device and moving the housing unit, the covering work can be performed on the production line, which is very efficient.

[0029]

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of a method for covering a housing unit of the present invention.

FIG. 2 is a plan view showing an embodiment of a method for covering a housing unit of the present invention.

FIG. 3 is a plan view showing an embodiment of a method for covering a housing unit of the present invention.

FIG. 4 is a side view showing an embodiment of a method for covering a housing unit of the present invention.

FIG. 5 is a side view showing an embodiment of a method for covering a housing unit of the present invention.

FIG. 6 is a side view showing an embodiment of a method for covering a housing unit of the present invention.

FIG. 7 is an enlarged cross-sectional view of a main part of FIG.

FIG. 8 is an enlarged cross-sectional view of a main part of FIG.

FIG. 9 is a perspective view showing a housing unit covered by the present invention.

FIG. 10 is a perspective view showing an example of a synthetic resin film which has been conventionally used.

FIG. 11 is a side view showing an example of conventional pallet shrink packaging.

FIG. 12 is a perspective view showing an example of stretch packaging that has been conventionally performed.

[Explanation of symbols]

 1: Housing unit 2,3,4: Film for body winding 5,5 ': Joining unit 6: Film for top plate 7,53,53': Seal bar 10: Roller conveyor 21, 31, 61: Original roll 22, 23: Rising part 41: Thermal fusion part 51, 51 ': Pinch roll 52, 52', 65: Guide roll 54, 54 ': Phototube 62, 63, 64: Seal part 70: Sealer receiving plate 71: Heat roll 72 : Hot air blower

Claims (1)

[Claims] 1. A film is drawn out from a pair of original rolls of a body-wrapping film, which is erected in front of one side surface of a housing unit and rotatably around an axis with an interval slightly longer than its width. The step of joining the starting end portions of the housing unit to each other, and the housing unit is transferred between the pair of original fabric rolls, and the surrounding side surface of the housing unit is covered with the film for body winding that is successively fed out, and then the covering end of the film is covered. A step of joining the parts together and separating from the original roll, and from the original roll of the top plate film rotatably arranged around the axis in the width direction of the housing unit above the front of the housing unit. After unwinding the film and joining the top plate film and the upper peripheral edge of the body winding film covering the peripheral side surfaces of the housing unit, the film is cut from the original roll of the top plate film. The method of coating comprising residential units and steps, a to.