CA3027658A1 - Biodegradable drinking straw - Google Patents

Biodegradable drinking straw Download PDF

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Publication number
CA3027658A1
CA3027658A1 CA3027658A CA3027658A CA3027658A1 CA 3027658 A1 CA3027658 A1 CA 3027658A1 CA 3027658 A CA3027658 A CA 3027658A CA 3027658 A CA3027658 A CA 3027658A CA 3027658 A1 CA3027658 A1 CA 3027658A1
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Prior art keywords
drinking straw
polymer
plant fiber
weight
fiber powder
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CA3027658A
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French (fr)
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CA3027658C (en
Inventor
Chien-Chung Huang
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Huang Chien Chung
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Huang Chien Chung
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/022—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the choice of material
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47G—HOUSEHOLD OR TABLE EQUIPMENT
    • A47G21/00—Table-ware
    • A47G21/18—Drinking straws or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/285—Feeding the extrusion material to the extruder
    • B29C48/288—Feeding the extrusion material to the extruder in solid form, e.g. powder or granules
    • B29C48/2886—Feeding the extrusion material to the extruder in solid form, e.g. powder or granules of fibrous, filamentary or filling materials, e.g. thin fibrous reinforcements or fillers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/92—Measuring, controlling or regulating
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/10—Homopolymers or copolymers of propene
    • C08L23/12—Polypropene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
    • C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
    • C08L67/04—Polyesters derived from hydroxycarboxylic acids, e.g. lactones
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L97/00—Compositions of lignin-containing materials
    • C08L97/02—Lignocellulosic material, e.g. wood, straw or bagasse
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47G—HOUSEHOLD OR TABLE EQUIPMENT
    • A47G2400/00—Details not otherwise provided for in A47G19/00-A47G23/16
    • A47G2400/10—Articles made from a particular material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92704—Temperature
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/06—Biodegradable
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
    • C08L2205/16—Fibres; Fibrils

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Materials Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Table Equipment (AREA)
  • Biological Depolymerization Polymers (AREA)
  • Packages (AREA)

Abstract

A biodegradable drinking straw is made of plant fiber powder and at least one polymer. The at least one polymer is polylactide (PLA), polybutylene succinate (PBS), or polypropylene (PP). As an alternative of drinking straws made of traditional plastic materials, the biodegradable drinking straw when buried in landfills can be degraded by microorganisms and decay, eventually becoming a part of the nature again. Besides, the biodegradable drinking straw is made of neither non-petrochemical materials nor silica, so its production avoids excessively consuming the finite resources, thereby being contributive to energy conservation and environmental protection.

Description

BIODEGRADABLE DRINKING STRAW
BACKGROUND
Technical Field [0001] The present invention relates to drinking straws, and more particularly to a biodegradable drinking straw that contributes to environmental protection.
Description of Related Art [00021 Nowadays, drinking straws commercially available can be divided into three types by material, namely plastic, glass, and stainless steel.
[0003] Most existing plastic drinking straws are made of material extracted form petroleum. When used to consume high-temperature drinks, such a plastic drinking straw may release toxic components like plasticizer. Plastic drinking straws are also suspected to become a source of toxicity when contacting and being eroded by acidic drinks.
Especially, organic juice bars where most drinks contain abundant fruit acids are more vulnerable to the potential toxicity of plastic drinking straws.
[0004] Glass drinking straws are made of silica (SiO2) and other auxiliary components mixed in different proportions through different processes depending on their final applications. In manufacturing, glass drinking straws are formed at a temperature as high as 1600 C and then cooked in an annealing furnace. However, the high brittleness makes glass drinking straws tends to accidentally break and cause production loss.
[0005] Stainless steel drinking straws are made with high energy consumption.
Three of the four furnaces used in the manufacturing process have to be heated to about
2 1500 C. Although some modem factories have their own co-generation systems and/or waste heat recovery systems, there is still a considerable amount of waste gas and heat emitted to the environment. The fact that steel needs huge energy to perform transformation makes such a product unavoidably require high environmental costs.
[00061 From the perspective of manufacturing, both glass drinking straws and stainless steel drinking straws consume huge energy from material input to production. This energy consumption terribly exploits natural resources and aggravates the greenhouse effects. On the other hand, plastic drinking straws may contain a great quantity of plasticizer, which can be dissolved by and enter drinks of high temperature or containing esters. The human body may have difficulty in decomposing or excreting plasticizer it intakes. Like other plastic products, drinking straws containing plasticizer when come into long-term contact with children can induce precocious puberty and infertility and increase the risk of asthma and allergy, raising concerns about health and safety.
[00071 Hence, how to address the foregoing problems and shortcomings seen in the prior art is an issue for the inventor of the present invention and people in the relevant industries to work on.
BRIEF SUMMARY OF THE INVENTION
[00081 The objective of the present invention is to provide a biodegradable drinking straw mainly made of a plant fiber powder and a polymer, which eliminates the use of traditional plastic materials in strew manufacturing and can be quickly biodegraded in the
3 nature, thereby minimizing the consequent impact to the environment and supporting environmental protection.
[00091 Hence, the present invention provides a biodegradable drinking straw, which comprises:
[0010] a plant fiber powder; and [00111 at least one polymer, being fused with the plant fiber powder and formed into a tubular body by means of extrusion molding.
[00121 Preferably, the at least one polymer comprises one polymer that is polylactide (PLA), polybutylene succinate (PBS), or polypropylene (PP).
[00131 Preferably, the at least one polymer comprises two polymers that are polylactide (PLA) and polybutylene succinate (PBS).
[00141 Preferably, the at least one polymer comprises two polymers that are polybutylene succinate (PBS) and polypropylene (PP).
100151 Preferably, the at least one polymer comprises two polymers that are polylactide (PLA) and polypropylene (PP).
[00161 Preferably, the at least one polymer comprises three polymers that are polylactide (PLA), polybutylene succinate (PBS), and polypropylene (PP).
[00171 Preferably, the plant fiber powder is made of sugarcane fiber, bamboo fiber, coconut fiber, palm shell fiber, coffee grounds, wine dregs, wheat meal, cotton, hemp fiber, rice straw, rice husk, corn stalk, starch, or wood flour.
4 [0018] Preferably, the plant fiber powder is added in an amount of between 10%

and 75% by weight.
[0019] Preferably, the at least one polymer is added in an amount of between 25%
and 90% by weight.
[00201 Preferably, the plant fiber powder and the at least one polymer are fused at a temperature of between 120 C and 180 C.
100211 Preferably, the extrusion molding is performed at a temperature of between 140 C and 230 C.
[0022] Preferably, the tubular body has a first end, a second end opposite to the first end, and a through hole passing through the first end and the second end.
[0023] The biodegradable drinking straw of the present invention is mainly composed of a plant fiber powder and at least one polymer. The at least one polymer may be polylactide (PLA), polybutylene succinate (PBS), or polypropylene (PP). As an alternative of drinking straws made of traditional plastic materials, the biodegradable drinking straw when buried in landfills can be degraded by microorganisms and decay, eventually becoming a part of the nature again. Besides, the biodegradable drinking straw is made of non-petrochemical materials or silica, so its production avoids excessively consuming the finite resources, thereby being contributive to energy conservation and environmental protection.
5 [00241 The invention as well as a preferred mode of use, further objectives and advantages thereof will be best understood by reference to the following detailed description of illustrative embodiments when read in conjunction with the accompanying drawings.
BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS
[00251 FIG. 1 is a perspective view of a biodegradable drinking straw according to one embodiment of the present invention.
[00261 FIG. 2 is an enlarged partial cross-sectional view of the biodegradable drinking straw in one aspect where it is composed of plant fiber powder and polylactide (PLA).
100271 FIG. 3 is an enlarged partial cross-sectional view of the biodegradable drinking straw in another aspect where it is composed of plant fiber powder and polybutylene succinate (PBS).
100281 FIG. 4 is an enlarged partial cross-sectional view of the biodegradable drinking straw in another aspect where it is composed of plant fiber powder and polypropylene (PP).
[00291 FIG. 5 is an enlarged partial cross-sectional view of the biodegradable drinking straw in another aspect where it is composed of plant fiber powder, polylactide (PLA), and polybutylene succinate (PBS).
[00301 FIG. 6 is an enlarged partial cross-sectional view of the biodegradable drinking straw in another aspect where it is composed of plant fiber powder, polylactide (PLA), and polypropylene (PP).
6 100311 FIG. 7 is an enlarged partial cross-sectional view of the biodegradable drinking straw in still another aspect where it is composed of plant fiber powder, polybutylene succinate (PBS), and polypropylene (PP).
[0032] FIG. 8 is an enlarged partial cross-sectional view of the biodegradable drinking straw in yet another aspect where it is composed of plant fiber powder, polylactide (PLA), polybutylene succinate (PBS), and polypropylene (PP).
DETAILED DESCRIPTION OF THE INVENTION
[0033] For further illustrating the means and functions by which the present invention achieves the certain objectives, the following description, in conjunction with the accompanying drawings and preferred embodiments, is set forth as below to illustrate the implement, structure, features and effects of the subject matter of the present invention.
[0034] Referring to FIG. 1 through FIG. 8, the present invention embodiment provides a biodegradable drinking straw made of a plant fiber powder 10 and at least one polymer 20.
100351 The plant fiber powder 10 may be sugarcane fiber, bamboo fiber, coconut fiber, palm shell fiber, coffee grounds, wine dregs, wheat meal, cotton, hemp fiber, rice straw, rice husk, corn stalk, starch, or wood flour. In the present embodiment, the plant fiber powder 10 is for example but not limited to sugarcane fiber. Particularly, the plant fiber powder 10 is added in an amount of between 10% and 75% by weight.
[0036] The at least one polymer 20 is fused with the plant fiber powder 10 and formed into a tubular body A by means of extrusion molding before cooled and cured in
7 water. Therein, the tubular body A is cut into the shape of the well-known drinking straw.
In the present embodiment, the plant fiber powder 10 and the at least one polymer 20 are fused at a temperature of between 120 C and 180 C. The extrusion molding is performed at a temperature of between 140 C and 230 C. The tubular body A so made has a first end Al, a second end A2 opposite to the first end Al, and a through hole A3 passing through the first end Al and the second end A2. Particularly, the at least one polymer 20 is added in an amount of between 25% and 90% by weight. Thereby, the materials used herein can well substitute the traditional plastic materials, allowing the biodegradable drinking straw, after use, to be quickly biodegraded in the nature, so as to minimize its impact to the environment and make it favorable to environmental protection.
[00371 With the foregoing composition, the biodegradable drinking straw of the present invention may be realized in the following ways.
[0038] Referring to FIG. 2, the at least one polymer 20 comprises one polymer that is polylactide (PLA) 20A . In the drawing, the plant fiber powder 10 is indicated by dots, and the polylactide (PLA) 20A is indicated by the triangles. Since the plant fiber powder 10 is added in an amount of between 10% and 75% by weight, the polymer 20 is added in an amount of between 25% and 90% by weight. In implementation of the present embodiment, the plant fiber powder 10 is added in an amount of 33% by weight, for example, and the polylactide (PLA) 20A is added in an amount of 67% by weight, for example.
However, the present is not limited to the present embodiment, and can alternatively be embodied by using
8 the plant fiber powder 10 of 42% by weight and the polylactide (PLA) 20A of 58% by weight.
100391 Referring to FIG. 3, the at least one polymer 20 comprises one polymer that is polybutylene succinate (PBS) 20B. In the drawing, the plant fiber powder 10 is indicated by dots, and the polybutylene succinate (PBS) 20B is indicated by the circles.
Since the plant fiber powder 10 is added in an amount of between 10% and 75% by weight, the polymer 20 is added in an amount of between 25% and 90% by weight. In implementation of the present embodiment, the plant fiber powder 10 is added in an amount of 40% by weight, for example, and the polybutylene succinate (PBS) 20B is added in an amount of 60% by weight, for example. However, the present is not limited to the present embodiment, and can alternatively be embodied by using the plant fiber powder 10 of 28% by weight and the polybutylene succinate (PBS) 20B of 72% by weight.
[00401 Referring to FIG. 4, the at least one polymer 20 comprises one polymer that is polypropylene (PP) 20C. In the drawing, the plant fiber powder 10 is indicated by dots, and the polypropylene (PP) 20C is indicated by ellipses. Since the plant fiber powder 10 is added in an amount of between 10% and 75% by weight, the polymer 20 is added in an amount of between 25% and 90% by weight. In implementation of the present embodiment, the plant fiber powder 10 is added in an amount of 45% by weight, for example, and the polypropylene (PP) 20C is added in an amount of 55% by weight, for example.
However, the present is not limited to the present embodiment, and can alternatively be embodied by
9 using the plant fiber powder 10 of 39% by weight, and the polypropylene (PP) 20C of 61%
by weight.
[00411 Referring to FIG. 5, the at least one polymer 20 comprises two polymers.
The first polymer is polylactide (PLA) 20A, indicated by the triangles. The second polymer 20 is polybutylene succinate (PBS) 20B, indicated by the circles. Since the plant fiber powder 10 is added in an amount of between 10% and 75% by weight, the polymers 20 are jointly added in an amount of between 25% and 90% by weight. In implementation of the present embodiment, the plant fiber powder 10 is added in an amount of 42% by weight, for example, while the polylactide (PLA) 20A and the polybutylene succinate (PBS) 20B are added in amounts of 37% and 21% by weight, respectively, for example. However, the present is not limited to the present embodiment, and can alternatively be embodied by using the plant fiber powder 10 of 45% by weight, the polylactide (PLA) 20A of 20%
by weight, and the polybutylene succinate (PBS) 20B of 35% by weight.
[0042] Referring to FIG. 6, the at least one polymer 20 comprises two polymers.
The first is polylactide (PLA) 20A, indicated by the triangles. The second is polypropylene (PP) 20C, indicated by the ellipses. Since the plant fiber powder 10 is added in an amount of between 10% and 75% by weight, the polymers 20 are jointly added in an amount of between 25% and 90% by weight. In implementation of the present embodiment, the plant fiber powder 10 is added in an amount of 50% by weight, for example, while the polylactide (PLA) 20A and the polypropylene (PP) 20C are added in amounts of 22% and 28%
by weight, respectively, for example. However, the present is not limited to the present
10 embodiment, and can alternatively be embodied by using the plant fiber powder 10 of 50%
by weight, the polylactide (PLA) 20A of 36% by weight, and the polypropylene 20C(PP) of 14% by weight.
[00431 Referring to FIG. 7, the at least one polymer 20 comprises two polymers.
The first polymer 20 is polypropylene (PP) 20C, indicated by ellipses. The second polymer 20 is polybutylene succinate (PBS) 20B, indicated by the circles. Since the plant fiber powder 10 is added in an amount of between 10% and 75% by weight, the polymers 20 are jointly added in an amount of between 25% and 90% by weight. In implementation of the present embodiment, the plant fiber powder 10 is added in an amount of 27% by weight, for example, while the polybutylene succinate (PBS) 20B and the polypropylene 20C(PP) are added in amounts of 22% and 51% by weight, respectively, for example. However, the present is not limited to the present embodiment, and can alternatively be embodied by using the plant fiber powder 10 of 50% by weight, the polybutylene succinate (PBS) 20B of 36%
by weight, and the polypropylene 20C (PP) of 14% by weight.
[0044] Referring to FIG. 8, the at least one polymer 20 comprises three polymers.
The first polymer 20 is polylactide (PLA) 20A, indicated by the triangles. The second polymer 20 is polybutylene succinate (PBS) 20B, indicated by the circles. The third polymer 20 is polypropylene (PP) 20C, indicated by the ellipses. Since the plant fiber powder 10 is added in an amount of between 10% and 75% by weight, the polymers 20 are jointly added in an amount of between 25% and 90% by weight. In implementation of the present embodiment, the plant fiber powder 10 is added in an amount of 12% by weight, for example, t while the polylactide (PLA) 20A, the polybutylene succinate (PBS) 20B and the polypropylene 20C (PP) are added in amounts of 22%, 31%, and 35% by weight, respectively, for example. However, the present is not limited to the present embodiment, and can alternatively be embodied by using the plant fiber powder 10 of 48% by weight, the polylactide (PLA) 20A of 12% by weight, the polybutylene succinate (PBS) 20B
of 26% by weight, and the polypropylene 20C (PP) of 14% by weight.
[0045] With the understanding to the configuration of the present invention through the foregoing embodiments, the following description will be directed to the use and effects of the present invention.
[0046] The disclosed biodegradable drinking straw is mainly composed of the plant fiber powder 10 and the at least one polymer 20. The at least one polymer 20 may be polylactide (PLA) 20A, polybutylene succinate (PBS) 20B, or polypropylene (PP) 20C. As an alternative of drinking straws made of traditional plastic materials, the biodegradable drinking straw when buried in landfills can be degraded by microorganisms and decay, eventually becoming a part of the nature again. Besides, the biodegradable drinking straw is made of neither non-petrochemical materials nor silica, so its production avoids excessively consuming the finite resources, thereby being contributive to energy conservation and environmental protection. The biodegradable drinking straw, after use, can be fully and naturally biodegraded, minimizing its impact to the environment, and addressing the concerns about healthy risks and environmental pollution as coming with the use of traditional drinking straws.

[00471 The present invention has been described with reference to the preferred embodiments and it is understood that the embodiments are not intended to limit the scope of the present invention. Moreover, as the contents disclosed herein should be readily understood and can be implemented by a person skilled in the art, all equivalent changes or modifications which do not depart from the concept of the present invention should be encompassed by the appended claims.

Claims (10)

WHAT IS CLAIMED IS:
1. A biodegradable drinking straw, comprising:
a plant fiber powder; and at least one polymer, being fused with the plant fiber powder and formed into a tubular body by means of extrusion molding.
2. The biodegradable drinking straw of claim 1, wherein the at least one polymer comprises one polymer that is polylactide (PLA), polybutylene succinate (PBS), or polypropylene (PP).
3. The biodegradable drinking straw of claim 1, wherein the at least one polymer comprises two polymers that are polylactide (PLA) and polybutylene succinate (PBS);
polybutylene succinate (PBS) and polypropylene (PP); or polylactide (PLA) and polypropylene (PP).
4. The biodegradable drinking straw of claim 1, wherein the at least one polymer comprises three polymers that are polylactide (PLA), polybutylene succinate (PBS), and polypropylene (PP).
5. The biodegradable drinking straw of claim 1, wherein the plant fiber powder is made of sugarcane fiber, bamboo fiber, coconut fiber, palm shell fiber, coffee grounds, wine dregs, wheat meal, cotton, hemp fiber, rice straw, rice husk, corn stalk, starch, or wood flour.
6. The biodegradable drinking straw of claim 1, wherein the plant fiber powder is added in an amount of between 10% and 75% by weight.
7. The biodegradable drinking straw of claim 1, wherein the at least one polymer is added in an amount of between 25% and 90% by weight.
8. The biodegradable drinking straw of claim 1, wherein the plant fiber powder and the at least one polymer are fused at a temperature of between 120°C and 180°C.
9. The biodegradable drinking straw of claim 1, wherein the extrusion molding is performed at a temperature of between 140°C and 230°C.
10. The biodegradable drinking straw of claim 1, wherein the tubular body has a first end, a second end opposite to the first end, and a through hole passing through the first end and the second end.
CA3027658A 2018-06-15 2018-12-14 Biodegradable drinking straw Active CA3027658C (en)

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TW107208053 2018-06-15
TW107208053U TWM567058U (en) 2018-06-15 2018-06-15 Eco-straws

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CA3027658C CA3027658C (en) 2021-11-09

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CA (1) CA3027658C (en)
FR (1) FR3082408B1 (en)
TW (1) TWM567058U (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111040398A (en) * 2019-11-15 2020-04-21 中船重工鹏力（南京）塑造科技有限公司 Biodegradable straw and preparation method thereof
EP3656257A1 (en) * 2018-11-22 2020-05-27 Taiwan Plants Fiber Tech Alliance Co., Ltd. Environmentally-friendly fiber straw structure
CN112961394A (en) * 2021-04-20 2021-06-15 浙江省林业科学研究院 Preparation method of degradable bamboo fiber straw
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