Chemical apparatus and process disinfecting – deodorizing – preser – Process disinfecting – preserving – deodorizing – or sterilizing – Process control in response to analysis
Patent
1998-01-12
1999-11-23
Till, Terrence R.
Chemical apparatus and process disinfecting, deodorizing, preser
Process disinfecting, preserving, deodorizing, or sterilizing
Process control in response to analysis
422 4, 422 5, 422108, 422109, 422122, 422307, 422125, 241DIG38, 96222, A61L 1100
Patent
active
059894962
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to a waste plastic disposal apparatus for reducing the volume of plastic waste such as plastic wrapping materials, plastic packing materials, plastic containers or the like produced in small-scale firms, stores, etc.
BACKGROUND ART
Plastic is widely used for one-way applications for food wrapping materials, containers, packing materials, etc. but is actually discarded as refuse in a large quantity. Thus, in Japan, a law on recycling of wrapping and containers was recently enacted from a standpoint of reduction of quantity of refuse, saving of energy and saving of resources and obligates recycling of such plastic. In order to promote recycling of plastic, not only legal regulation but economic approach is vital. As one trial, it is proposed to lower the cost of recycled plastic through reduction of transportation and collection costs by reducing volume of plastic with a mechanical crushing and cutting machine, a mechanical compressive apparatus, a mechanical crushing and frictional heat dissolving apparatus, etc. However, these prior art apparatuses have large disposal capacities but are large and expensive and therefore, are not suitable for use in terminal collection spots such as supermarkets where a relatively small quantity of plastic is disposed of.
On the other hand, a method suitable for disposal of a relatively small quantity of plastic, in which plastic is heated at low temperatures so as to be reduced in volume, is proposed in Japanese Patent Laid-Open Publication No. 5-23655 or Japanese Patent Laid-Open Publication No. 5-92179. This method simplifies structure of the apparatuses as compared with conventional ones and is suitable for a compact apparatus for distributed disposal of a small quantity. However, in this known method, since plastic is heated so as to be reduced in volume, malodorous gas may be produced according to the kinds of plastic or heating temperature during the heating process and thus, malodor may be produced from the apparatus during and after disposal. Especially, in case where the disposal apparatus is used in stores such as supermarkets, production of malodorous gas could offer a serious problem. Furthermore, in this known method, in case plastic has been heated at an excessively high temperature due to malfunction of control of the apparatus or combustible volatiles such as kerosine are mixed into the apparatus, there is a risk in that a large quantity of combustible gas is produced and reaches its ignition point.
Therefore, in conventional disposal of waste plastic, there have been such problems that technology for removing malodor quickly and effectively should be established and ignition of produced gas should be prevented under any condition.
SUMMARY OF THE INVENTION
The present invention has for its object to provide, with a view to eliminating the above described disadvantages of conventional waste plastic disposal apparatuses, a compact and inexpensive waste plastic disposal apparatus in which production of malodor at the time of heating of waste plastic is prevented, production of combustible gas during improper operation is restrained and ignition of produced gas is prevented and which is suitable for small-scale firms, stores and household.
In order to accomplish this object, a waste plastic disposal apparatus of the present invention comprises: a storage portion for storing waste plastic, which includes a lid; a heating portion for heating the waste plastic, which includes a heater and a fan; a hot-air circulating path for circulating hot air therethrough, which is defined by the storage portion and the heating portion; an exhaust path which branches off from the hot-air circulating path; and a deodorizing portion which is provided in the exhaust path; wherein in response to intake of a predetermined quantity of external air into the hot-air circulating path per unit time, the hot air in the hot-air circulating path is exhausted in a quantity equal to the predetermined quantity from the exhaust path through t
REFERENCES:
patent: 4983214 (1991-01-01), Bottinelli et al.
patent: 5322603 (1994-06-01), Kameda et al.
patent: 5334313 (1994-08-01), Anderson
patent: 5447017 (1995-09-01), Becher et al.
Fujita Tatsuo
Hattori Tomotaka
Nakazono Mitsuyuki
Suzuki Jiro
Tomizawa Takeshi
Matsushita Electric - Industrial Co., Ltd.
Moazzam Fariborz
Till Terrence R.
LandOfFree
Waste plastic disposal apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Waste plastic disposal apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Waste plastic disposal apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1217723