FI86264C - FRAMSTAELLNINGSFOERFARANDE FOER ENGAONGSSAECK FOER ASBESTRIVNING. - Google Patents

Description

1 86264

Method of manufacturing a disposable asbestos unloading bag

The invention relates to a method of manufacturing a disposable asbestos unloading bag, through which the resulting product asbestos unloading bag comprises at least one pair of sleeves with uniform gloves or the like, by means of which the asbestos insulation is discharged, e.g.

10 Asbestos waste falls to the bottom of a demolition bag. The unloading bag must be fastened tightly with tape or a collar around the pipe to be unloaded.

The discharge bag must be tight in all respects to prevent asbestos dust from entering the air outside the bag.

15

Known asbestos unloading bags comprise hand compartments which are placed parallel to the front of the bag. Such an unloading bag must be made in several parts.

The actual bag blank and the blank comprising arms and hands 20 must be cut and seamed. The parts must be placed in place and sealed together. Such an unloading bag is known e.g. WO 88/04978.

In the known methods of manufacturing asbestos unloading bags, numerous work steps are disadvantageous for cost reasons. Automating the manufacture of unloading bags is difficult and particularly expensive. In addition, the usability of the known unloading bags is disadvantageous because the unloading work V: can only be performed on one side of the unloading bag.

! 30 For example, according to Finnish law, an unloading bag can be used without permission: ··· for the same unloading site for one man-hour.

The actual asbestos demolition shops holding the permit can, in principle, carry out all demolition work using demolition bags. When the use of the demolition bag is largely due to valve leaks and pipe breakers, ie emergencies, in which case it should be possible to dismantle the asbestos insulation around the pipe as quickly as possible and not have much time for planning.

2 8 6 2 64 Such persons do not always have sufficient professional skills to consider which side of the demolition work would be most advantageous to perform.

It would be advantageous to be able to carry out demolition work from either side, sometimes changing sides if necessary.

This is possible when using an unloading bag manufactured by the manufacturing method according to the invention, which is why this unloading bag is advantageous in terms of usability.

Asbestos unloading bags often have to be provided with double-sided tapes placed inside the bag 15. In this manufacturing method, the tape is easy to attach to the bag after the sealing step.

The method of manufacturing the asbestos unloading bag 20 according to the invention provides a preferred method of manufacturing whether the unloading bag is manufactured manually, semi-automatically or fully automatically.

Another object is to provide a unloading bag which, when used, can be used for unloading work from either side and sometimes by changing sides. The above objects are achieved according to claim 1.

The invention will now be described in detail with reference to the accompanying drawings.

Figure 1 shows an asbestos demolition bag made by the manufacturing method according to the invention after the sealing and cutting step, Figure 2 shows another manufacturing application according to the invention.

'40 3 86264 said asbestos unloading bag can alternatively be made by sealing it completely with a hand sealer, with 5 semi-automatic sealers or automatically.

When making a unpacking bag manually or semi-automatically, a blank of suitable length, about 1400 mm in length, must first be cut from a transparent polyethylene plastic film 10, which is double-sided wrapped in a roll.

The plastic blank is placed on the sealing base and a hand pattern is formed either by hand sealing according to the shapes of the matrix or semi-automatically, e.g. by means of a pneumatic press device, whereby the hand pattern matrix is attached to the cover part of the sealing machine, a second edge is first formed The unloading bag is then inverted, leaving the hand patterns 20 (cadences) inside the unloading bag, the sealing waste being removed or removed by hand after the sealing / cutting step. Any necessary tapes are attached to the bag and packed.

it should be noted that both the seaming and the cutting of the hand pictures 25 take place in one work step.

Fully automatically in the manufacture of the strip-like «I1 'unloading bag according to Fig. 2, the plastic film is rolled directly: from the roll between the machine base and the tool, 30 where sealing and cutting take place and sealing debris is removed with compressed air, then the plastic

In principle, the implementation is similar to a semi-car. . 35, except that both edges of the plastic film are seamed and cut simultaneously and no separate blank is cut.

At the end of the production line, the unloading bag is turned and ♦ rolled into a roll.

4 86264

The asbestos unloading bag 1 shown in Fig. 1 comprises armpits 2,3, the bag of which is fastened with tape or 5 collars around the tube, as well as hand patterns 4,5, and an actual bag part 6, the bottom of which is preferably provided with a fold of half-plastic plastic firm sole.

10

The strip-shaped asbestos unloading bag shown in Figure 2 can be attached in one longer piece at a time, e.g. for the whole room to be unloaded around the pipe quickly and securely, after which 15 asbestos insulation is unloaded at each bag by dropping the unloading is shown, it is essential that the manufacturing method results in the placement of the disassembly gloves, i.e. the hands, on both edges of the plastic film 20. 1 · • · ·

Claims (3)

5 86264 Patent Claims A method of manufacturing a disposable asbestos unpacking bag or a suitable unloading bag, characterized in that the hand and arm pattern <4, 5 in the asbestos unloading bag <1> is obtained by sealing and cutting 10 at least two layers of plastic film blank or plastic roll unwound film 4, 5) and removing wastes. Manufacturing method according to Claim 1, characterized in that the second (4) hand pattern is first semi-automatically seamed, the second edge of the blank is turned, placed on the sealing base and the second (5) hand pattern is seamed. 20 Manufacturing method according to Claims 1 to 2, characterized in that the hand patterns (4, 5) are arranged inside the bag by turning the bag. . '·· 25 6 86204