JPH02202979A - Mat for sucking oil - Google Patents

Abstract

PURPOSE:To provide a mat for sucking oil suitable for laying on a floor having a strong possibility of being stained with spilt oil and excellent in preventing both the diffusion of oil toward the floor surface and the penetration of oil under the floor by forming a laminate from a nonwoven fabric and a synthetic resin film. CONSTITUTION:A nonwoven fabric 1 (e.g. one made of polypropylene fibers) and a synthetic resin film 2 (e.g. a polypropylene film) are laminated to produce a mat for sucking oil. It may be formed by putting a nonwoven fabric in an open top bag made of a synthetic resin film 2. When the obtained mat is laid on a floor, the nonwoven fabric 1 absorbs oil well to prevent the diffusion of oil toward the floor surface and the synthetic resin film 2 prevents the penetration of oil under the film.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an oil-absorbing mat, and more specifically, the present invention relates to an oil-absorbing mat that is placed on a floor where oil or the like easily spills to prevent oil from penetrating into the underfloor area. Regarding adsorption mats.

[Conventional technology]

Until now, oil-absorbing mats that are placed on floors or the like in advance to prevent spilled oil from penetrating or dispersing have not been well known. Oil-absorbing materials are known as similar to oil-absorbing mats.

As an oil-absorbing material, there is known a material in which a cylindrical cloth bag is filled with highly oil-absorbing powder such as wood cutting powder.

This oil-absorbing material is used, for example, by rolling it in a bag on its side on the floor or the like in a place where oil is likely to spill.

In the event of an oil spill, the oil-absorbing material acts as an oil barrier, absorbing the oil and preventing it from spreading.

[Problem to be solved by the invention]

By the way, the above-mentioned conventional oil absorbing materials are somewhat effective in preventing oil spilled onto the floor from spreading in the planar direction, but
There was a problem in that it had no effect on penetration into the underfloor direction.

Additionally, oil absorbing materials are most commonly used in factories. Among these, oil absorbing materials are in high demand in, for example, machine factories, especially machine maintenance factories, where machine oil, cleaning oil, etc. are frequently used. In such factories, tools and metal powder are often scattered on the floor along with oil. If a cloth bag were to be rolled around in such a place, the cloth bag would easily melt and break, and as a result, there would be a major problem in that the powder etc. that had been filled would be thrown out immediately.

If the highly oil-absorbing powder that was filled in the bag were to scatter around the factory, it would not only be an unsightly appearance. If the powder absorbs even a small amount of oil, there is a problem in that the powder sticks strongly to the floor surface, making it difficult to clean and slippery when walking on it, posing a danger to people.

That's not the only problem. Most importantly, the presence of flying oil-absorbed powder makes such areas a much greater fire hazard than if liquid oil simply lingers on the floor. This is because the oil adhering to the powder, which is scattered like dust, has a large contact area with the air, and it evaporates extremely easily even with the slightest breeze in the surrounding area, which cannot be felt on the skin. Moreover, in such cases, the amount of oil that can be seen by those around you is extremely small, so many people usually miss it.

That is, it has begun to be pointed out that the above-mentioned conventional oil absorbing materials pose a social and public danger in that they pose an extremely high risk of fire outbreaks in machinery factories, for example, where large amounts of oil are used.

The present invention takes into account the above-mentioned conventional problems, and aims to provide an oil-absorbing mat that prevents oil from penetrating under the floor in the event of an oil spill, and that facilitates post-treatment of absorbed oil. This will be a major issue.

[Means to solve the problem]

In order to solve the above-mentioned problems, one of the oil-absorbing mats according to the present invention is made of a laminate of a nonwoven fabric and a synthetic resin film.

Another oil-absorbing mat according to the present invention has a nonwoven fabric inserted into a bag formed of a synthetic resin film and having an opening at the top.

[Effect]

Non-woven fabric absorbs oil well and prevents it from spreading in the horizontal direction, such as on the floor. The synthetic resin film prevents oil from penetrating to the back side of the film. Both the nonwoven fabric and the synthetic resin film have a certain degree of mechanical strength, and will not easily melt even if unexpected physical force is applied, for example, by mechanical tools scattered around them.

Therefore, the powder that has absorbed oil is not dispersed.

In particular, the top-opening bag made of synthetic resin film further prevents oil from leaking from the sides in the planar direction.

The present invention will be explained in more detail below.

In the oil-absorbing mat according to the present invention, the order of species and manufacturing process of the nonwoven fabric laminated on the synthetic resin film do not matter.

The nonwoven fabric used in the present invention may be, for example, a dry nonwoven fabric or a wet nonwoven fabric. The dry nonwoven fabric may be adhesive type, mechanically bonded type, or spinning type nonwoven fabric. In the case of a wet-laid nonwoven fabric, it may be of a paper-making type, for example.

In the nonwoven fabric used in the present invention, the range of raw material fibers does not particularly matter. For example, raw material fibers used in the present invention include synthetic fibers such as nylon, vinylon, polyvinyl alcohol, polypropylene, polyethylene, vinyl chloride, polyacrylonitrile, acetate, polyvinyl chloride, polyester, acrylic, polytetrafluoroethylene, and glass fibers. Other examples include inorganic fibers, natural fibers, and rayon, which is a semi-natural fiber. Furthermore, the fiber length may be either continuous fibers or short fibers.

However, among the above-mentioned nonwoven fabrics, nonwoven fabrics are classified as spin-type nonwoven fabrics, and particularly preferred are nonwoven fabrics formed by the spunbond method, in which filaments melt-spun from a spinning nozzle are directly accumulated on a lattice to create a continuous wear. Particularly preferred is a nonwoven fabric made from polypropylene fibers, especially polypropylene fibers containing an oil absorption promoter.

The weight of the nonwoven fabric used in the present invention per top area is preferably 100 to 500 g/Tn', preferably 200 to 400 g/Tr1'. In addition, the bulk density is 0.07-0.12g/Cm3, and the fineness is 1-1
5D is preferable.

In the oil-absorbing mat according to the present invention, 1, a synthetic resin film is laminated on the above-mentioned nonwoven fabric.

The material of the synthetic resin film laminated to the nonwoven fabric in the present invention is preferably determined in relation to the oil used, but is usually polypropylene, polyethylene terephthalate, 0-nylon, etc. Stretched nylon film, low density polyethylene,
It may be a synthetic resin film made of vinyl acetate, polyvinyl chloride, high-density polyethylene, or other single synthetic resin, or a composite synthetic resin film formed by combining these single synthetic resins. Among these, polypropylene film or polyethylene terephthalate film, particularly polypropylene film, is preferred.

The synthetic resin film used in the present invention may contain plasticizers, heat stabilizers, antioxidants, ultraviolet absorbers, colorants, flame inhibitors, antistatic agents, oil absorption promoters, etc., as long as they do not contradict the purpose of the invention. may be formed by including.

The above-mentioned synthetic resin film used in the present invention does not matter in terms of manufacturing method or form. For example, it may be a film formed into a sheet shape by T-die casting, or it may be a blown film of polypropylene, for example, formed into a bag shape while being expanded by blowing air using an inflation die. An unstretched polypropylene film may also be used.

In particular, such blown polypropylene films or unstretched polypropylene films are particularly preferred because they prevent oil penetration for an extremely long period of time.

Further, such a synthetic resin film is particularly preferably colored, and in particular, it is preferable to be colored blue because it is convenient to use. This is because when the color material comes into contact with oil, the color saturation changes, and from this, it is possible to detect the presence of oil. It is also preferable from an aesthetic point of view. In particular, if the above-mentioned polypropylene film is a blown film, pellets can be mixed in during molding and coloring can be done at low cost, which is also preferable from the viewpoint of manufacturing. Enthusiasm and coloring can be printed.

Furthermore, in the present invention, the synthetic resin film may be particularly embossed or surface coated with polyvinyl chloride or other elastic resins, and when processed into an oil-absorbing mat and spread on a floor, etc. This is preferable because it prevents the sheet from slipping on the floor.

The present invention comprises a laminate of a nonwoven fabric and a synthetic resin film as described above.

The method of laminating the nonwoven fabric and the synthetic resin film does not matter. For example, one side may be made of a nonwoven fabric and the other side may be made of a synthetic resin film. Specifically, so-called extrusion laminates are formed by extruding a molten resin whose main component is synthetic resin through a die and coating the surface of a nonwoven fabric, or alternatively, a synthetic resin film and a nonwoven fabric that are once formed into a film form are formed. It may be a so-called dry laminate 5 which is formed by overlapping and heating or bonding with an adhesive. However, if the nonwoven fabric is a polypropylene spunbond nonwoven fabric, dry laminate is more preferable than extrusion laminate in terms of oil adsorption properties.

Furthermore, the nonwoven fabric may be inserted into a bag made of synthetic resin film with most of the center part of the top open, in the same way as a futon neck is inserted into a futon cover with an open top. good. This further prevents oils that have fallen from above onto the upper surface of the nonwoven fabric from flowing outward from the edges of the oil-absorbing mat.

The size of the oil-absorbing mat is not a particular problem.

The size of the oil-absorbing mat should be large enough to cover an area where oil may leak and spread. Preferably, it is large enough to cover the floor of a room where oils may be handled.

The oil-absorbing mat according to the present invention prevents the diffusion or penetration of many types of oils. Examples of oils that have a diffusion-preventing or permeation-preventing effect include, for example, a process oil generally called Dabney Mechanic #10 (trade name), gasoline 1, kerosene, light oil, heavy oil, alcohol, and the like. It is particularly preferred (-) to process oils such as Dabney Mechanic #10.

The oil-absorbing mat according to the present invention can be used on the floor of a machine factory that is a general handling area for hazardous materials, on the floor of a hazardous materials warehouse where petroleum such as heavy oil or kerosene is stored, or on the floor of a hazardous materials warehouse where petroleum such as heavy oil or kerosene is stored, or for small amounts of hazardous materials where the legal requirements are relaxed. It is best to use it by laying it on the floor around the storage tank for goods, with the non-woven fabric side facing up. In addition, it may be used by being spread on the floor where kerosene cans and the like are stored in ordinary households.

The oil-absorbing mant according to the present invention prevents liquid oil from penetrating under the floor and spreading in a planar direction when it spills.

The oil-absorbing mat according to the present invention can absorb 5 to 15 g of oil per unit weight of nonwoven fabric.

1. If bottles, cans, etc. are placed on storage shelves in hazardous materials warehouses where hazardous materials are stored, the stored bottles, cans, etc. may slip or slip if subjected to earthquake vibrations. Alternatively, a nonwoven fabric surface with a large friction coefficient is preferable because it prevents falling.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

<Example 1> A spunbond nonwoven fabric was formed using polypropylene long fibers. Unit area mass is 400g/ze, size is 60x60
cm. On the other hand, a blown film was formed from polypropylene and colored blue. The size of the inflation film is 1, 25μ thick and 121X61cm.
A film sheet of size 2 was folded into halves, one side of the halved film sheet was cut out to a size of 60 x 60 cm, and overlapped and bag-stitched to make the size.

Next, the polypropylene long fiber spunbond nonwoven fabric 1 obtained in this way and the polypropylene blown film 2 were stacked with the end HIEs aligned, the negative side was made of the nonwoven fabric, and the other side was made of the polypropylene blown film, and heated at 210°C. The two were fused together by heat to form an oil-absorbing mat as shown in the cross-sectional view in FIG.

The oil-absorbing mat thus obtained was spread on the floor with the non-woven side facing up, and an appropriate amount of Dabney Mechanic #10) was spread on it.

After leaving it for 7 days, the area around the oil-absorbing mat was observed.

It was found that there was no diffusion of oil around the oil-absorbing mat or penetration of oil into the underside of the polypropylene sheet.

When the liquid oil remaining on the upper surface of the oil-absorbing mat was removed and the weight change of the oil-absorbing mat was measured, it was found that 15 g of oil was absorbed per 1 g.

<Example 2> An oil-absorbing mat as shown in the cross-sectional view in FIG. 2 was formed in the same manner as in Example 1 except that the nonwoven fabric 1 was inserted into the polypropylene blown film 2.

The same results as in Example 1 were obtained.

〔Effect of the invention〕

Since the present invention has the above-mentioned configuration, for example, when laid on a floor surface, it prevents oil from spreading toward the floor surface and penetrating under the floor, and also absorbs oil and turns it into powder. Post-treatment of the oil is also easier because it does not scatter in all directions.

[Brief explanation of the drawing]

Figure 1 is a cross-sectional view of an oil-absorbing mat made by laminating synthetic resin film and non-woven fabric, and Figure 2 is an oil-absorbing mat in which non-woven fabric is inserted into a bag with an opening at the top formed of synthetic resin film. FIG. 1...Nonwoven fabric

Claims (2)

[Claims] (1) Oil-absorbing mat made of a laminate of non-woven fabric and synthetic resin film. (2) An oil-absorbing mat in which a nonwoven fabric is placed in a bag with an opening at the top formed of a synthetic resin film.