CN111559101A - Process for producing drinking container made of biodegradable material - Google Patents
Process for producing drinking container made of biodegradable material Download PDFInfo
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- CN111559101A CN111559101A CN202010417546.2A CN202010417546A CN111559101A CN 111559101 A CN111559101 A CN 111559101A CN 202010417546 A CN202010417546 A CN 202010417546A CN 111559101 A CN111559101 A CN 111559101A
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- cup
- cup wall
- biodegradable
- wall
- sheet layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D22/00—Producing hollow articles
- B29D22/003—Containers for packaging, storing or transporting, e.g. bottles, jars, cans, barrels, tanks
Abstract
The invention provides a production process of a drinking container made of biodegradable materials, which comprises the following steps: (1) carrying out hot-press forming and die cutting on the first biodegradable foaming sheet layer within the temperature range of 100-150 ℃ to obtain a cup bottom; die cutting the second biodegradable foaming sheet layer to obtain a cup wall, bending and forming the cup wall within the temperature range of 100-150 ℃, heating the outer surface of the cup wall to the temperature range of 100-150 ℃ to form secondary foaming so as to eliminate wrinkles on the surface of the cup wall, and pressing the left side edge and the right side edge of the cup wall together to enable the cup wall to be cylindrical; (2) and pressing the cup bottom on the bottom of the cup wall to obtain the drinking container. The invention adopts biodegradable materials, thus solving the problems of food safety and environmental protection; the drinking container produced by the invention has good heat insulation function.
Description
Technical Field
The invention relates to the field of container preparation, in particular to a production process of a drinking container made of biodegradable materials.
Background
In order to achieve the water-proof effect, a hot drink cup in the prior art comprises: the paper cup is internally provided with a layer of plastic. The existing hot drinking cup adopts regenerated polyethylene, can generate cracking change in the reprocessing process, generates a plurality of harmful compounds, and is easier to migrate into water in use. The existing hot drinking cup also adopts a method that a polyethylene water-stop film is coated on the inner wall of the cup body. Polyethylene is the safest chemical in food processing. However, if the material selected is poor or the processing is not critical, the polyethylene may be oxidized to carbonyl compounds during hot melting or application to paper cups. The carbonyl compound is not easy to volatilize at normal temperature, but can volatilize when hot water is poured into the paper cup, so people can smell the carbonyl compound with strange taste. It is theorized that the long-term intake of such organic compounds is definitely harmful to the human body. In addition, the existing hot drink paper cup has the following problems: firstly, there is also an environmental problem, polyethylene is difficult to degrade; second, there is a problem of heat insulation, and the wall of the existing paper cup is very hot after hot water is added.
Disclosure of Invention
The invention aims to provide a production process of a drinking container made of biodegradable materials, and the process is used for solving the problems of food safety and environmental protection.
In order to achieve the above object, the present invention provides a process for producing a drinking vessel made of biodegradable material, comprising the steps of: (1) carrying out hot-press forming and die cutting on the first biodegradable foaming sheet layer within the temperature range of 100-150 ℃ to obtain a cup bottom; die cutting the second biodegradable foaming sheet layer to obtain a cup wall, bending and forming the cup wall within the temperature range of 100-150 ℃, heating the outer surface of the cup wall to the temperature range of 100-150 ℃ to form secondary foaming so as to eliminate wrinkles on the surface of the cup wall, and pressing the left side edge and the right side edge of the cup wall together to enable the cup wall to be cylindrical; (2) and pressing the cup bottom on the bottom of the cup wall to obtain the drinking container.
Preferably, in the step (1), the first biodegradable foam sheet layer is subjected to hot press forming by means of thermoforming.
Preferably, in the step (1), the first biodegradable foam sheet layer is hot-press molded by using an upper mold and a lower mold.
Preferably, in the step (1), before the cup wall is bent and formed, the upper end of the cup wall is folded and hot pressed at a temperature ranging from 100 ℃ to 150 ℃ so that the upper end of the cup wall forms a cup rim.
Preferably, in the step (1), the left and right sides of the cup wall obtained by die cutting are respectively provided with a bevel, so that the upper end of the cup wall can be completely overlapped with the body of the cup wall when being folded outwards.
Preferably, in the step (1), the first biodegradable foam sheet layer is subjected to hot press forming and die cutting at a temperature ranging from 100 ℃ to 150 ℃ so as to obtain the cup rim and the cup bottom simultaneously; in the step (2), the cup rim is pressed on the upper end of the cup wall.
In another embodiment, in the step (1), the third biodegradable foam sheet layer is subjected to hot press molding and die cutting at a temperature ranging from 100 ℃ to 150 ℃ to obtain a cup rim; in the step (2), the cup rim is pressed on the upper end of the cup wall.
Preferably, in the step (1), the cup wall is clamped between an inner mold and an outer mold, and the inner mold is used for heating the cup wall, so that wrinkles on the surface of the cup wall are eliminated.
Preferably, in the step (1), a texture is provided on an inner wall of the outer die, so that the outer die forms the texture on an outer surface of the cup wall.
Preferably, in the step (1), the left and right sides of the cup wall are pressed together by means of ultrasonic thermoforming; in the step (2), the cup bottom is pressed on the bottom of the cup wall in an ultrasonic thermoforming mode.
Preferably, the method further comprises the step (3) of performing die cutting or rotary cutting on the cup bottom to flatten the cup bottom.
Compared with the prior art, the invention adopts biodegradable materials, and the first biodegradable foaming sheet layer and the second biodegradable foaming sheet layer are nontoxic and degradable, thereby solving the problems of food safety and environmental protection; the first biodegradable foaming sheet layer and the second biodegradable foaming sheet layer can be recrystallized within the temperature range of 100-150 ℃, so that the cup bottom made of the first biodegradable foaming sheet layer and the cup wall made of the second biodegradable foaming sheet layer have the characteristics of temperature resistance and difficult deformation, and the drinking container produced by the method has a good heat insulation function.
Drawings
Fig. 1 is a schematic structural diagram of a cup bottom and a cup rim formed on a first biodegradable foam sheet layer by hot pressing according to the invention.
Fig. 2 is a schematic structural view of the cup wall die-cut on a second biodegradable foam sheet layer according to the present invention.
Fig. 3 is a schematic structural diagram of a cup bottom formed on the first biodegradable foam sheet layer by hot pressing according to another embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a cup rim formed on a third biodegradable foam sheet layer by hot pressing according to another embodiment of the present invention.
Fig. 5 is a schematic structural view of a cup wall die-cut from a second biodegradable foam sheet layer according to another embodiment of the present invention.
Fig. 6 is a schematic view of a structure of forming a rim at the upper end of a cup wall according to another embodiment of the present invention.
Fig. 7 is a schematic view of the construction of the drinking vessel of the present invention.
Fig. 8 is a schematic view of the structure of a drinking vessel of another embodiment of the present invention.
Detailed Description
In order to explain technical contents and structural features of the present invention in detail, the following description is made with reference to the embodiments and the accompanying drawings.
Referring to fig. 2, 3 and 7, a process for manufacturing a drinking container made of biodegradable material according to the present invention includes the following steps:
s11, carrying out hot press molding and die cutting on the first biodegradable foaming sheet layer 1 at the temperature of 100-150 ℃ to obtain a cup bottom 11;
the second biodegradable foaming sheet layer 2 is subjected to die cutting to obtain a cup wall 21, the cup wall 21 is bent and formed within the temperature range of 100-150 ℃, then the outer surface of the cup wall 21 is heated to the temperature range of 100-150 ℃ to form secondary foaming to eliminate wrinkles on the surface of the cup wall 21, and the left side edge and the right side edge of the cup wall 21 are pressed together to enable the cup wall 21 to be cylindrical;
and S12, pressing the cup bottom 11 on the bottom of the cup wall 21, thereby obtaining the drinking container 100.
And S13, performing die cutting or rotary cutting on the cup bottom 11 to flatten the cup bottom 11.
In step S11, the first biodegradable foam sheet layer 1 may be hot-pressed by a conventional hot-forming method such as blister, and the first biodegradable foam sheet layer 1 may be hot-pressed by an upper mold and a lower mold, but not limited thereto; in step S11, the cup wall 21 obtained by die cutting has a fan shape, but not limited to this; in step S11, the cup wall 21 is clamped between the inner mold and the outer mold by the inner mold and the outer mold, and the inner mold is used to heat the cup wall 21 at a temperature ranging from 100 ℃ to 150 ℃, so as to eliminate wrinkles on the surface of the cup wall 21, so that the cup wall 21 is flat, the outer mold can also perform a shaping function on the cup wall 21, the inner wall of the outer mold can also be provided with grains, so that the outer mold is processed to form grains 211 on the outer surface of the cup wall 21, and the friction force of the outer surface of the cup wall 21 is increased, so that the outer surface of the cup wall 21 has a certain anti-slip function; in step S11, the left and right sides of the cup wall 21 overlap and can be pressed together by ultrasonic thermoforming, but not limited thereto; in step S12, the cup bottom 11 may be pressed on the bottom of the cup wall 21 by ultrasonic thermoforming, but not limited thereto.
With continued reference to fig. 3, 5, 6 and 7, a preferred embodiment of the process for manufacturing a drinking container made of biodegradable material according to the present invention comprises the following steps:
s21, carrying out hot press molding and die cutting on the first biodegradable foaming sheet layer 1 at the temperature of 100-150 ℃ to obtain a cup bottom 11;
die cutting is carried out on the second biodegradable foaming sheet layer 2 to obtain the cup wall 21, wherein the left side and the right side of the cup wall 21 obtained through die cutting are respectively provided with a folding angle alpha, so that the upper end of the cup wall 21 can be completely overlapped with the body of the cup wall 21 when being folded outwards; folding and hot-pressing the upper end of the cup wall 21 at a temperature ranging from 100 ℃ to 150 ℃ to form a cup rim 12 at the upper end of the cup wall 21; bending and forming the cup wall 21 within the temperature range of 100-150 ℃; then, the outer surface of the cup wall 21 is heated to a temperature range of 100 ℃ to 150 ℃ to form secondary foaming so as to eliminate wrinkles on the surface of the cup wall 21, and the left side edge and the right side edge of the cup wall 21 are pressed together to enable the cup wall 21 to be cylindrical;
and S22, pressing the cup bottom 11 on the bottom of the cup wall 21, thereby obtaining the drinking container 100.
And S23, performing die cutting or rotary cutting on the cup bottom 11 to flatten the cup bottom 11.
In step S21, the first biodegradable foam sheet layer 1 may be hot-pressed by a conventional hot-forming method such as blister, and the first biodegradable foam sheet layer 1 may be hot-pressed by an upper mold and a lower mold, but not limited thereto; in step S21, the cup wall 21 obtained by die cutting has a fan shape, but not limited to this; in step S21, the cup wall 21 is clamped between the inner mold and the outer mold by the inner mold and the outer mold, and the inner mold is used to heat the cup wall 21 at a temperature ranging from 100 ℃ to 150 ℃, so as to eliminate wrinkles on the surface of the cup wall 21, so that the cup wall 21 is flat, the outer mold can also perform a shaping function on the cup wall 21, the inner wall of the outer mold can also be provided with grains, so that the outer mold is processed to form grains 211 on the outer surface of the cup wall 21, and the friction force of the outer surface of the cup wall 21 is increased, so that the outer surface of the cup wall 21 has a certain anti-slip function; in step S21, the left and right sides of the cup wall 21 overlap and can be pressed together by ultrasonic thermoforming, but not limited thereto; in step S22, the cup bottom 11 may be pressed on the bottom of the cup wall 21 by ultrasonic thermoforming, but not limited thereto.
Referring to fig. 1, 2 and 7, a preferred embodiment of the process for manufacturing a drinking vessel made of biodegradable material according to the present invention comprises the following steps:
s31, performing hot-press forming and die cutting on the first biodegradable foam sheet layer 1 at the temperature ranging from 100 ℃ to 150 ℃ to obtain a cup edge 12 and a cup bottom 11 at the same time;
the second biodegradable foaming sheet layer 2 is subjected to die cutting to obtain a cup wall 21, the cup wall 21 is bent and formed within the temperature range of 100-150 ℃, then the outer surface of the cup wall 21 is heated to the temperature range of 100-150 ℃ to form secondary foaming to eliminate wrinkles on the surface of the cup wall 21, and the left side edge and the right side edge of the cup wall 21 are pressed together to enable the cup wall 21 to be cylindrical;
and S32, pressing the cup bottom 11 on the bottom of the cup wall 21, and pressing the cup edge 12 on the upper end of the cup wall 21, thereby obtaining the drinking container 100.
And S33, performing die cutting or rotary cutting on the cup bottom 11 to flatten the cup bottom 11.
In step S31, the first biodegradable foam sheet layer 1 may be hot-pressed by a conventional hot-forming method such as blister, and the first biodegradable foam sheet layer 1 may be hot-pressed by an upper mold and a lower mold, but not limited thereto; in step S31, the cup wall 21 obtained by die cutting has a fan shape, but not limited to this; in step S31, the cup wall 21 is clamped between the inner mold and the outer mold by the inner mold and the outer mold, and the inner mold is used to heat the cup wall 21 at a temperature ranging from 100 ℃ to 150 ℃, so as to eliminate wrinkles on the surface of the cup wall 21, so that the cup wall 21 is flat, the outer mold can also perform a shaping function on the cup wall 21, the inner wall of the outer mold can also be provided with grains, so that the outer mold is processed to form grains 211 on the outer surface of the cup wall 21, and the friction force of the outer surface of the cup wall 21 is increased, so that the outer surface of the cup wall 21 has a certain anti-slip function; in step S31, the left and right sides of the cup wall 21 overlap and can be pressed together by ultrasonic thermoforming, but not limited thereto; in step S32, the cup bottom 11 and the cup rim 12 may be pressed on the bottom of the cup wall 21 by ultrasonic thermoforming, but not limited thereto.
Referring to fig. 2, fig. 3, fig. 4 and fig. 8, a preferred embodiment of the process for manufacturing a drinking container made of biodegradable material of the present invention comprises the following steps:
s41, carrying out hot press molding and die cutting on the first biodegradable foaming sheet layer 1 at the temperature of 100-150 ℃ to obtain a cup bottom 11;
performing hot-press forming and die cutting on the third biodegradable foam sheet layer 3 at the temperature ranging from 100 ℃ to 150 ℃ to obtain a cup rim 12;
the second biodegradable foaming sheet layer 2 is subjected to die cutting to obtain a cup wall 21, the cup wall 21 is bent and formed within the temperature range of 100-150 ℃, then the outer surface of the cup wall 21 is heated to the temperature range of 100-150 ℃ to form secondary foaming to eliminate wrinkles on the surface of the cup wall 21, and the left side edge and the right side edge of the cup wall 21 are pressed together to enable the cup wall 21 to be cylindrical;
and S42, pressing the cup bottom 11 on the bottom of the cup wall 21, and pressing the cup edge 12 on the upper end of the cup wall 21, thereby obtaining the drinking container 100.
And S43, performing die cutting or rotary cutting on the cup bottom 11 to flatten the cup bottom 11.
In step S41, the first biodegradable foam sheet layer 1 may be hot-pressed by a conventional hot-forming method such as blister, and the first biodegradable foam sheet layer 1 may be hot-pressed by an upper mold and a lower mold, but not limited thereto; in step S41, the cup wall 21 obtained by die cutting has a fan shape, but not limited to this; in step S41, the cup wall 21 is clamped between the inner mold and the outer mold by the inner mold and the outer mold, and the inner mold is used to heat the cup wall 21 at a temperature ranging from 100 ℃ to 150 ℃, so as to eliminate wrinkles on the surface of the cup wall 21, so that the cup wall 21 is flat, the outer mold can also perform a shaping function on the cup wall 21, the inner wall of the outer mold can also be provided with grains, so that the outer mold is processed to form grains 211 on the outer surface of the cup wall 21, and the friction force of the outer surface of the cup wall 21 is increased, so that the outer surface of the cup wall 21 has a certain anti-slip function; in step S41, the left and right sides of the cup wall 21 overlap and can be pressed together by ultrasonic thermoforming, but not limited thereto; in step S42, the cup bottom 11 and the cup rim 12 may be pressed on the bottom of the cup wall 21 by ultrasonic thermoforming, but not limited thereto.
It should be noted that in the above embodiments, the materials of the first biodegradable foam sheet layer 1, the second biodegradable foam sheet layer 2 and the third biodegradable foam sheet layer 3 can all be the existing biodegradable materials such as PLA (polylactic acid), PBAT (polybutylene adipate terephthalate) or PBS (polybutylene succinate); the cup wall 21 may have a hollow cylindrical structure such as a hollow cylinder or a hollow truncated cone.
In conclusion, the first biodegradable foam sheet layer 1 and the second biodegradable foam sheet layer 2 are both biodegradable materials, and the biodegradable materials are nontoxic and degradable, so that the problems of safety and environmental protection are solved; the first biodegradable foaming sheet layer 1 and the second biodegradable foaming sheet layer 2 can be recrystallized within the temperature range of 100-150 ℃, so that the cup bottom 11 and the cup edge 12 which are made of the first biodegradable foaming sheet layer 1 and the cup wall 21 which is made of the second biodegradable foaming sheet layer 2 have the characteristics of temperature resistance and difficult deformation, and the drinking container 100 which is produced has a good heat insulation function; the drinking container 100 may be a paper cup, a bowl, or a bucket of instant noodles, etc.
The above disclosure is only a preferred embodiment of the present invention, and should not be taken as limiting the scope of the invention, so that the appended claims are intended to cover all such modifications and changes as fall within the true spirit of the invention.
Claims (11)
1. A process for the production of a drinking vessel made of biodegradable material, comprising the steps of:
(1) carrying out hot-press forming and die cutting on the first biodegradable foaming sheet layer within the temperature range of 100-150 ℃ to obtain a cup bottom;
die cutting the second biodegradable foaming sheet layer to obtain a cup wall, bending and forming the cup wall within the temperature range of 100-150 ℃, heating the outer surface of the cup wall to the temperature range of 100-150 ℃ to form secondary foaming so as to eliminate wrinkles on the surface of the cup wall, and pressing the left side edge and the right side edge of the cup wall together to enable the cup wall to be cylindrical;
(2) and pressing the cup bottom on the bottom of the cup wall to obtain the drinking container.
2. The process for producing a drinking vessel made of biodegradable material as set forth in claim 1, wherein in the step (1), the first biodegradable foamed sheet layer is subjected to hot press molding by means of thermoforming.
3. The process for producing a drinking vessel made of a biodegradable material as set forth in claim 1, wherein in the step (1), the first biodegradable foamed sheet layer is subjected to the hot press molding with an upper die and a lower die.
4. The process for producing a drinking vessel made of biodegradable material as set forth in claim 1, wherein in the step (1), the upper end of the cup wall is folded and thermally pressed at a temperature ranging from 100 ℃ to 150 ℃ before the cup wall is folded to form a cup rim.
5. The process for producing a drinking vessel made of biodegradable material as set forth in claim 4, wherein in the step (1), the left and right sides of the cup wall obtained by die cutting have a folded angle, respectively, so that the upper end of the cup wall can be completely overlapped with the body of the cup wall when folded outwardly.
6. The process for producing a drinking vessel made of biodegradable material as set forth in claim 1, wherein in the step (1), the first biodegradable foam sheet layer is subjected to the hot press molding and the die cutting at a temperature ranging from 100 ℃ to 150 ℃ to obtain the cup rim and the cup bottom at the same time; in the step (2), the cup rim is pressed on the upper end of the cup wall.
7. The process for producing a drinking vessel made of biodegradable material as set forth in claim 1, wherein in the step (1), a third biodegradable foamed sheet layer is subjected to hot press molding and die cutting at a temperature ranging from 100 ℃ to 150 ℃ to obtain a rim; in the step (2), the cup rim is pressed on the upper end of the cup wall.
8. The process for producing a drinking vessel made of biodegradable material as set forth in claim 1, wherein in the step (1), the cup wall is sandwiched by an inner mold and an outer mold, and the cup wall is heated by the inner mold, thereby removing wrinkles on the surface of the cup wall.
9. The process for producing a drinking vessel made of biodegradable material as set forth in claim 8, wherein in step (1), a texture is provided on the inner wall of the outer mold so that the outer mold is processed to form a texture on the outer surface of the cup wall.
10. The process for producing a drinking vessel made of biodegradable material as set forth in claim 1, wherein in the step (1), the left and right side edges of the cup wall are pressed together by means of ultrasonic thermoforming; in the step (2), the cup bottom is pressed on the bottom of the cup wall in an ultrasonic thermoforming mode.
11. The process for producing a drinking vessel made of biodegradable material as set forth in claim 1, further comprising the step (3) of die-cutting or rotary-cutting the bottom cup to flatten the bottom cup.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010417546.2A CN111559101A (en) | 2020-05-15 | 2020-05-15 | Process for producing drinking container made of biodegradable material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010417546.2A CN111559101A (en) | 2020-05-15 | 2020-05-15 | Process for producing drinking container made of biodegradable material |
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| CN111559101A true CN111559101A (en) | 2020-08-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010417546.2A Pending CN111559101A (en) | 2020-05-15 | 2020-05-15 | Process for producing drinking container made of biodegradable material |
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| US5000991A (en) * | 1988-12-01 | 1991-03-19 | Sekisui Kaseihin Kogyo Kabushiki Kaisha | Process for producing polyester resin foam and polyester resin foam sheet |
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