CN110680750A - Preparation process of degradable oral liquid straw - Google Patents
Preparation process of degradable oral liquid straw Download PDFInfo
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- CN110680750A CN110680750A CN201910787021.5A CN201910787021A CN110680750A CN 110680750 A CN110680750 A CN 110680750A CN 201910787021 A CN201910787021 A CN 201910787021A CN 110680750 A CN110680750 A CN 110680750A
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- straw
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- degradable
- oral liquid
- heating
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
- A61J7/00—Devices for administering medicines orally, e.g. spoons; Pill counting devices; Arrangements for time indication or reminder for taking medicine
- A61J7/0015—Devices specially adapted for taking medicines
- A61J7/0038—Straws
Abstract
The invention discloses a preparation process of a degradable oral liquid straw, which comprises the steps of preparing a degradable material raw material, inspecting the material, electrically heating the raw material, heating to 120 ℃ firstly, keeping the temperature for 50-70 min, continuously heating to 160 ℃ and keeping the temperature for 40-60 min, heating the material to 220 ℃ finally, keeping the temperature for 30-50 min, extruding the material through a die, keeping the temperature of the die at 220-240 ℃, then cooling with water, inspecting a preliminarily formed straw after cooling with water, finally carrying out extrusion forming, inspecting the extruded straw, cutting the formed straw, inspecting the cut length, then carrying out ozone disinfection, laminating and packaging the straw after ozone disinfection, and then boxing to finally obtain a finished product; the invention can produce and manufacture the straw which is convenient to degrade by taking the polylactic acid as the raw material for manufacturing the straw, realizes the circulation in the nature, has good environmental protection performance, can be manufactured by taking corn or cassava and the like as the raw material, can regenerate the material and has lower manufacturing cost.
Description
Technical Field
The invention relates to the technical field of straw manufacturing, in particular to a preparation process of a degradable oral liquid straw.
Background
The straw, also known as drinking straw, is a cylindrical, hollow plastic product, and is mainly used for drinking beverages in cups and also for sucking bone marrow of long bones of some cooked animals. Generally, the diameter is about 0.5cm, but when the straw is used for sucking drinks such as yoghourt, pearl milk tea and the like, a thicker straw is used, and the diameter of some straws is 1.2 cm. Some rarely, very small diameter straws are used for drinking hot beverages.
The prior straw is generally made of polyethylene or polypropylene, the straw made of polyethylene or polypropylene is difficult to degrade in nature and easy to pollute the environment, and when the straw is made of polyethylene or polypropylene, a plasticizer, a flame retardant, an antioxidant, toner, a filler and the like are required to be added, and many of the components can generate complex chemical reaction after being combusted to generate carcinogenic substances.
Disclosure of Invention
The invention aims to overcome the problems in the prior art and provides a preparation process of a degradable oral liquid straw.
In order to achieve the technical purpose and achieve the technical effect, the invention is realized by the following technical scheme:
a preparation process of a degradable oral liquid straw comprises the following steps,
s1: preparing degradable material raw materials, inspecting the materials,
s2: electrically heating the raw material to 120 ℃ for 50-70 min, continuously heating to 160 ℃ for 40-60 min, heating the material to 220 ℃ for 30-50 min,
s3: extruding the material in the step two through a die, keeping the temperature of the die at 220-240 ℃, then cooling the water, inspecting the preliminarily molded straw after cooling the water, finally performing extrusion molding, inspecting the extruded straw,
s4: cutting the formed straws in the third step, inspecting the cut lengths, then carrying out ozone disinfection, laminating and packaging the straws after ozone disinfection, and then boxing to finally obtain the finished products.
Further, the degradable raw material is polylactic acid, the polylactic acid is manufactured by adopting a lactic acid direct polymerization method, and the manufacturing process of the polylactic acid comprises the following steps: slowly heating lactic acid in inert gas, slowly reducing pressure, directly dehydrating and condensing the lactic acid, further polycondensing reactants at 220-260 ℃ under 133Pa, and obtaining the polylactic acid with the relative molecular mass of more than 4000.
Further, the tests in the production of the straw were carried out according to GB/19277.1-2011.
The benefit effects of the invention are:
the invention can produce and manufacture the straw which is convenient to degrade by taking the polylactic acid as the raw material for manufacturing the straw, realizes the circulation in the nature, has good environmental protection performance, can be manufactured by taking corn or cassava and the like as the raw material, can regenerate the material and has lower manufacturing cost.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a process flow diagram of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
As shown in figure 1, the invention is a degradable oral liquid straw preparation process, preparing degradable material raw materials, wherein the degradable raw materials are polylactic acid, the polylactic acid is prepared by a lactic acid direct polymerization method, the lactic acid is slowly heated and slowly decompressed in inert gas, the lactic acid is directly dehydrated and condensed, reactants are further condensed at 220-260 ℃ and 133Pa, the polylactic acid with the relative molecular mass of more than 4000 is obtained, the prepared polylactic acid does not contain a catalyst, the prepared polylactic acid material is tested,
electrically heating polylactic acid material to 120 deg.C for 60min, continuously heating to 160 deg.C for 50min, heating to 220 deg.C for 40min, extruding the material through a mold at 230 deg.C, cooling with water, inspecting the preliminarily molded straw after cooling with water, extruding, inspecting the extruded straw,
cutting the formed straw, inspecting the cut length, then carrying out ozone disinfection, laminating and packaging the straw subjected to ozone disinfection, and then boxing to finally obtain a finished product.
Wherein, the test in the production of the suction tube is carried out according to GB/19277.1-2011.
Example 2
As shown in figure 1, the invention is a degradable oral liquid straw preparation process, which comprises preparing degradable raw materials, wherein the degradable raw materials are polylactic acid, the polylactic acid is prepared by a lactic acid ring-opening polymerization method, the polylactic acid is firstly subjected to dehydration and cyclization to prepare lactide, then the lactide is subjected to ring-opening polymerization to prepare polylactide, the purity requirement of the catalyst is high, the prepared polylactic acid material is inspected,
electrically heating polylactic acid material to 120 deg.C for 60min, continuously heating to 160 deg.C for 50min, heating to 220 deg.C for 40min, extruding the material through a mold at 230 deg.C, cooling with water, inspecting the preliminarily molded straw after cooling with water, extruding, inspecting the extruded straw,
cutting the formed straw, inspecting the cut length, then carrying out ozone disinfection, laminating and packaging the straw subjected to ozone disinfection, and then boxing to finally obtain a finished product.
Wherein, the inspection in the production of the suction tube is carried out according to GB/19277.1-2011
Example 3
As shown in figure 1, the invention is a degradable oral liquid straw preparation process, preparing degradable material raw materials, the degradable raw materials are polylactic acid, the polylactic acid is manufactured by adopting a lactic acid solid phase polymerization method, low molecular weight resin obtained by a direct polymerization method is subjected to polymerization reaction under the conditions of reduced pressure, vacuum and temperature between Tg and Tm to obtain the low molecular weight resin, so that the polymerization degree of the low molecular weight resin is improved, the molecular weight of the low molecular weight resin is increased, the strength and the processing performance of the material are improved, the prepared polylactic acid material is tested,
electrically heating polylactic acid material to 120 deg.C for 60min, continuously heating to 160 deg.C for 50min, heating to 220 deg.C for 40min, extruding the material through a mold at 230 deg.C, cooling with water, inspecting the preliminarily molded straw after cooling with water, extruding, inspecting the extruded straw,
cutting the formed straw, inspecting the cut length, then carrying out ozone disinfection, laminating and packaging the straw subjected to ozone disinfection, and then boxing to finally obtain a finished product.
Wherein, the inspection in the production of the suction tube is carried out according to GB/19277.1-2011
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (3)
1. A degradable oral liquid straw preparation process is characterized by comprising the following steps,
s1: preparing degradable material raw materials, inspecting the materials,
s2: electrically heating the raw material to 120 ℃ for 50-70 min, continuously heating to 160 ℃ for 40-60 min, heating the material to 220 ℃ for 30-50 min,
s3: extruding the material in the step two through a die, keeping the temperature of the die at 220-240 ℃, then cooling the water, inspecting the preliminarily molded straw after cooling the water, finally performing extrusion molding, inspecting the extruded straw,
s4: cutting the formed straws in the third step, inspecting the cut lengths, then carrying out ozone disinfection, laminating and packaging the straws after ozone disinfection, and then boxing to finally obtain the finished products.
2. The process for preparing a degradable oral liquid straw according to claim 1, wherein the degradable oral liquid straw comprises the following steps: the degradable raw material is polylactic acid, the polylactic acid is manufactured by adopting a lactic acid direct polymerization method, and the manufacturing process of the polylactic acid comprises the following steps: slowly heating lactic acid in inert gas, slowly reducing pressure, directly dehydrating and condensing the lactic acid, further polycondensing reactants at 220-260 ℃ under 133Pa, and obtaining the polylactic acid with the relative molecular mass of more than 4000.
3. The process for preparing a degradable oral liquid straw according to claim 1, wherein the degradable oral liquid straw comprises the following steps: the test in the production of drinking straws was carried out according to GB/19277.1-2011.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910787021.5A CN110680750A (en) | 2019-08-25 | 2019-08-25 | Preparation process of degradable oral liquid straw |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910787021.5A CN110680750A (en) | 2019-08-25 | 2019-08-25 | Preparation process of degradable oral liquid straw |
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| CN110680750A true CN110680750A (en) | 2020-01-14 |
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| CN201910787021.5A Pending CN110680750A (en) | 2019-08-25 | 2019-08-25 | Preparation process of degradable oral liquid straw |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112045020A (en) * | 2020-08-22 | 2020-12-08 | 蒙佳 | Aluminum foil edge rolling, butt joint and bonding and pipe orifice edge curling process |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200833279A (en) * | 2007-02-15 | 2008-08-16 | Wei Mon Ind Co Ltd | Biodegradable straw and manufacturing method thereof |
| CN109370180A (en) * | 2018-10-15 | 2019-02-22 | 嘉兴凡高电子商务有限公司 | A kind of degradable PLA biomaterial of suction pipe manufacture and preparation method thereof |
-
2019
- 2019-08-25 CN CN201910787021.5A patent/CN110680750A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200833279A (en) * | 2007-02-15 | 2008-08-16 | Wei Mon Ind Co Ltd | Biodegradable straw and manufacturing method thereof |
| CN109370180A (en) * | 2018-10-15 | 2019-02-22 | 嘉兴凡高电子商务有限公司 | A kind of degradable PLA biomaterial of suction pipe manufacture and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112045020A (en) * | 2020-08-22 | 2020-12-08 | 蒙佳 | Aluminum foil edge rolling, butt joint and bonding and pipe orifice edge curling process |
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Application publication date: 20200114 |
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