Stock material or miscellaneous articles – Coated or structually defined flake – particle – cell – strand,... – Particulate matter
Patent
1997-11-20
1999-10-26
Le, Hoa T.
Stock material or miscellaneous articles
Coated or structually defined flake, particle, cell, strand,...
Particulate matter
119172, 241 241, 241 2428, 241 2429, 427220, 427221, 427222, 428407, 4289033, B32B 516, A01K 2900, B02C 1700, B05D 500
Patent
active
059725095
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to a process for producing an animal excretion (animal waste matter excreted) treating article made using a paper diaper waste as a starting material, and particularly, to a process for producing an animal excretion treating article which is made using as a starting material, paper diaper and menstrual napkin wastes as defective articles produced in a coarse of production of a paper diaper and a menstrual napkin, which has a water retention function and an insecticidal function, and which can be incinerated or burnt up in a water-containing state after being used.
BACKGROUND ART
Depending upon the type of a product, the paper diaper generally comprises 40 to 50% by weight of cotton-like pulp such as a pulverized pulp, an absorbing sheet of paper and the like, 20 to 30% by weight of a high-molecular absorber such as a highly water-absorptive resin, 10 to 15% by weight of a surface material formed of a non-woven fabric such as a face polyethylene, polyethylene terephthalate, rayon MIX and PETMIX, etc., 10 to 15% by weight of a water-proof material of a polyethylene film, a calcium carbonate-incorporated polyethylene film, etc., and 5% by weight of a tape, such as a furnishing tape, a release tape, a target tape, an elastic yarn such as spandex, or tape of adhesive, an elastic yarn such as spandex, or an adhesive such as hot melt and the like.
For example, the paper diaper is formed by placing an absorbing band containing a mixture of a fuzz, i.e., a fluff made of a pulverized pulp and a highly water-absorptive resin packed in a tissue, onto a polyethylene film at a predetermined place, and sealing an upper surface of such package, for example, by putting a non-woven fabric of polyethylene thereover. A rubber is attached around the waist or leg of the resulting matter, and tape fasteners are mounted on opposite sides of the back of the rubber-attached matter. Tensioning support tapes are mounted in correspondence to the respective tape fasteners.
The disposal paper diaper having such a structure is checked by a cross-over cut check, an absorber position check, a tape position check, a metal detection check and the like, thereby rejecting the defective articles, but the amount of such wastes is increased to very large amount.
However, the paper diaper waste includes, for example, the polyethylene film, the non-woven fabric of polypropylene and the rubber in amounts of about 30% by weight; the highly water absorptive resin in an amount of about 25% by weight; and the pulp powder and the tissue in an amount of about 50% by weight. Therefore, if the paper diaper waste remains as it is, such waste does not find an application, and must be subjected to a classification, thereby separating the polypropylene, the polyethylene, the tissue and the rubber from the highly water-absorptive resin and the pulp. For this reason, most of the paper diaper wastes is incinerated or burnt up.
However, the paper diaper waste has a calorific value as high as 5,000 to 6,000 kcal/kg and hence, must be separated from the common refuses. In addition, even when the paper diaper wastes are burnt up, they must be burnt up in mixture with other refuses, which arises a problem.
It is an object of the present invention to solve the problems concerning the discarding disposal of the paper diaper wastes.
DISCLOSURE OF THE INVENTION
The present inventors have found that if the polyethylene film, the non-woven fabric of polypropylene and the rubber are pulverized into a particle size of 4 mm, particularly, 2 mm or less, the powder resulting from the pulverization has an enhanced water-absorptivity and an enhanced water retention, and that if the paper diaper waste is used as a starting material for the animal excretion treating article, the excreted urine is retained by the water-absorptive resin contained in the paper diaper waste to provide a lowered calorific value and hence, the used animal excretion treating article is a waste suitable for incinerating treatment. Thus, the present invento
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Kabushikikaisha Daiki
Le Hoa T.
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