This application claims the priority of Taiwanese patent application No. 112119585, filed on May 25, 2023, which is incorporated herewith by reference.
The present invention relates to a recycling technology field, in particular to a method and a device for recycling and granulating PP composite medical drip soft bags.
At present, used PP (Polypropylene) composite medical drip soft bags (such as intravenous drip bags) cannot be completely recycled, and they are all burned. During its burning process, it is easy to produce harmful gases or substances such as dioxin, which not only consumes fuel and cost, but also easily pollutes the environment.
A primary objective of the present invention is to provide a method and a device for recycling and granulating PP composite medical drip soft bags. The recycled PP composite medical drip soft bags are crushed by a crushing unit. After cleaning and dehydration, they are evenly stirred with a co-solvent to form a fragment mixture with PP materials. Then through heating and kneading, filtering and extruding, cooling, shaping and granulating, cleaning, dehydrating, vibration screening and outputting to storage barrels according to different sizes to complete the recycling and granulation of PP composite medical drip soft bags. This is used to recycle PP composite medical drip soft bags to achieve the effects of recycling, improving processing efficiency and creating friendly environment.
A method for recycling and granulating PP composite medical drip soft bags includes putting a fragment mixture of a recycled PP composite medical drip soft bag into a hopper; heating the fragment mixture to a predetermined temperature for kneading, filtering the heated fragment mixture, and then extruding the heated fragment mixture after filtering; cooling the fragment mixture; shaping and granulating the fragment mixture to form a plurality of particle materials; cleaning the particle materials; dehydrating the particle materials; vibration screening the particle materials according to different sizes; and outputting the particle materials with respective sizes to different storage barrels.
In some embodiments, before the step of putting a fragment mixture of a recycled PP composite medical drip soft bag into a hopper, the method further comprises manually sorting the recycled PP composite medical drip soft bags to pick out PP composite materials, crushing the PP composite materials, cleaning a plurality of fragments of the crushed PP composite materials, and resorting the fragments, dehydrating the fragments and packing the fragments into space packages.
In some embodiments, before the step of putting a fragment mixture of a recycled PP composite medical drip soft bag into a hopper, the method further comprises drying the fragments and evenly stirring the fragments with a co-solvent to form the fragment mixture.
In some embodiments, the predetermined temperature is between 150° C. and 300° C.
In some embodiments, the step of shaping and granulating the fragment mixture to form a plurality of particle materials is to use water for cooling for shaping and granulating, so that the viscosity and particle size of the particle materials are in an optimal state.
A device for recycling and granulating PP composite medical drip soft bags includes a hopper, receiving a fragment mixture of a recycled PP composite medical drip soft bag; a heating and kneading unit, connected to the hopper, receiving the fragment mixture from the hopper and heating and kneading the fragment mixture to a predetermined temperature and then advancing; a first die, connected to the heating and kneading unit to filter and extrude the fragment mixture after heating and kneading; a cooling unit, connected to the first die to cool and advance the extruded fragment mixture; a second die, connected to the cooling unit for shaping and granulating the cooled fragment mixture to form a plurality of particle materials; a water channel, connected to the second die to transport and clean the particle materials; a dehydrator, connected to the water channel to dehydrate and transport the cleaned particle materials; a vibration screening unit, connected to the dehydrator and vibrating to screen the particle materials according to different sizes; and a plurality of storage barrels, arranged adjacent to the vibration screening unit to collect the particle materials with respective sizes.
In some embodiments, the device further comprises a crushing unit, crushing PP composite materials picked out from the recycled PP composite medical drip soft bag to form a plurality of fragments, wherein the fragments are evenly stirred with a co-solvent to form the fragment mixture.
In some embodiments, the heating and kneading unit and the cooling unit have a screw structure.
In some embodiments, the predetermined temperature is between 150° C. and 300° C.
In some embodiments, the first die head is provided with a filter plate.
In order to make the above objectives, features and advantages of the present invention more obvious and understandable, the specific embodiments listed in the drawings are described in detail below.
Aspects of the present invention are best understood from the following detailed description when read with the accompanying drawings. It is noted that, in accordance with the standard practice in the industry, various features are not drawn to scale. In fact, the dimensions of the various features may be increased or reduced for clarity of discussion.
It will be appreciated that, although specific embodiments of the present invention are described herein for purposes of illustration, various modifications may be made without departing from the spirit and scope of the present invention.
In the following description, certain specific details are set forth in order to provide a thorough understanding of various aspects of the disclosed subject matter. However, the disclosed subject matter may be practiced without these specific details. In some instances, well-known structures and methods of power delivery comprising embodiments of the subject matter disclosed herein have not been described in detail to avoid obscuring the descriptions of other aspects of the present invention.
Unless the context requires otherwise, throughout the specification and claims that follow, the word “comprise,” “have,” “include,” and variations thereof, such as “comprises,” “comprising,” “having,” “including” are to be construed in an open, inclusive sense, that is, as “including, but not limited to.”
Reference throughout the specification to “one embodiment” or “an embodiment” means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearance of the phrases “in one embodiment” or “in an embodiment” in various places throughout the specification are not necessarily all referring to the same aspect. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more aspects of the present invention.
The heating and kneading unit 102 is connected to and communicated with the hopper 101 for receiving the fragment mixture 202 from the hopper 101 and heating and kneading the fragment mixture 202 to a predetermined temperature and then advancing. In some embodiments, the predetermined temperature is between 150° C. and 300° C. In some embodiments, the heating and kneading unit 102 has a screw structure 300 for uniformly heating the fragment mixture 202 and advancing the fragment mixture 202 into the first die 103.
The first die 103 is connected to the heating and kneading unit 102 to filter and extrude the fragment mixture 202 after heating and kneading; wherein, the extruded fragment mixture 202 is similar to dough. In some embodiments, as shown in
The second die 105 is connected to the cooling unit 104 for shaping and granulating the cooled fragment mixture 202 to form a plurality of particle materials 500, such as particles.
The water channel 106 is connected to the second die 105 to transport and clean the particle materials 500. In some embodiments, the particle materials 500 are transported to the dehydrator 107 via the water channel 106.
The storage barrels 109 are arranged adjacent to the vibration screening unit 108 to collect the particle materials 500 with respective sizes.
Please refer to
In some embodiments, before the step (e.g., step S101) of putting a fragment mixture of a recycled PP composite medical drip soft bag into a hopper, the method S100 further includes: manually sorting the recycled PP composite medical drip soft bags 200 to pick out PP composite materials, crushing the PP composite materials, cleaning a plurality of fragments 201 of the crushed PP composite materials, and resorting the fragments 201, dehydrating the fragments 201 and packing the fragments 201 into space packages. This can be implemented by a crushing unit (not shown). In some embodiments, before the step (e.g., step S101) of putting a fragment mixture of a recycled PP composite medical drip soft bag into a hopper, the method further includes: drying the fragments 201 and evenly stirring the fragments 201 with a co-solvent to form the fragment mixture 202.
In some embodiments, the predetermined temperature in step S102 is between 150° C. and 300° C.
The step (e.g., step S104) of shaping and granulating the fragment mixture to form a plurality of particle materials is to use water for cooling for shaping and granulating, so that the viscosity and particle size of the particle materials 500 are in an optimal state.
In summary, the recycled PP composite medical drip soft bags 200 are crushed by the crushing unit (not shown). After cleaning and dehydration, they are evenly stirred with a co-solvent to form the fragment mixture 202 with PP materials. Then through heating and kneading, filtering and extruding, cooling, shaping and granulating, cleaning, dehydrating, vibration screening and outputting to the storage barrels 109 according to different sizes to complete the recycling and granulation of PP composite medical drip soft bags 200. This is used to recycle PP composite medical drip soft bags 200 to achieve the effects of recycling, improving processing efficiency and creating friendly environment.
Number | Date | Country | Kind |
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112119585 | May 2023 | TW | national |