CN211511359U

CN211511359U - Full-biodegradable disposable chopsticks

Info

Publication number: CN211511359U
Application number: CN201921922053.3U
Authority: CN
Inventors: 林新华
Original assignee: Baixin Fujian New Material Technology Co ltd
Current assignee: Baixin Fujian New Material Technology Co ltd
Priority date: 2019-11-08
Filing date: 2019-11-08
Publication date: 2020-09-18
Anticipated expiration: 2029-11-08

Abstract

The utility model relates to a full biodegradable disposable chopsticks includes the plant fiber layer as chopsticks major structure layer set up the boundary layer of complete cladding plant fiber layer outside the plant fiber layer connect first degradable plastic layer outside the boundary layer connect second degradable plastic layer outside the first degradable plastic layer. The interface layer is a polycaprolactone grafted maleic anhydride resin layer, a polylactic acid grafted maleic anhydride resin layer or a polycaprolactone resin layer, the first degradable plastic layer is a polylactic acid layer, and the second degradable plastic layer is a PBAT resin layer. In addition, the plant fiber layer is a plant fiber cylinder, and a plurality of reinforced connecting grooves with two ends extending along the longitudinal direction of the plant fiber cylinder are arranged at intervals along the circumferential direction of the plant fiber cylinder; the cross section of each reinforced connecting groove is rectangular or trapezoidal, and the groove bottom of each reinforced connecting groove is inwards sunken along the radial direction of the plant fiber cylinder.

Description

Full-biodegradable disposable chopsticks

Technical Field

The utility model belongs to the technical field of chopsticks, concretely relates to disposable chopsticks of full biodegradation.

Background

As is well known, disposable chopsticks are popular with consumers and catering operators because of convenient use and prevention of cross-spread of diseases.

At present, widely used disposable chopsticks are almost all made of wood or bamboo, so that the processing cost is high, the disposable chopsticks are discarded after being used, a large amount of wood or bamboo is consumed, resources are wasted, the environment is damaged, and the requirements for protecting the ecological environment are not met. In addition, on one hand, because the manufacturing process of the disposable chopsticks is simple, most disposable wooden chopsticks are manufactured from workshops, and some poorly processed disposable chopsticks are worried both from the viewpoint of environmental protection and from the viewpoint of sanitary conditions because sulfur dioxide used for whitening is reserved; on the other hand, chopsticks made of wood or bamboo are easy to go moldy and breed bacteria in high-temperature and high-humidity environments, and seriously threaten the food safety and the body health of people.

The main reason is that no sanitary and environment-friendly substitute which is cheap and convenient to produce exists at present. Therefore, although the related departments have been calling for stopping using the disposable bamboo-wood chopsticks as soon as possible, the disposable bamboo-wood chopsticks are still used because no suitable substitute is available, and the market has urgent need of a chopstick which has low manufacturing cost, environmental protection and sanitation and can replace the disposable bamboo-wood chopsticks.

With the development of the manufacturing technology of degradable plastics, the raw materials can be obtained from non-petrochemical field substances, the production cost is gradually reduced, and the degradation speed is accelerated after the waste, so that the production of disposable chopsticks by the degradable plastics becomes possible.

SUMMERY OF THE UTILITY MODEL

In order to overcome the technical problem that exists among the prior art, the utility model provides a but both biodegradable has low cost and accords with environmental protection, sanitary requirement's disposable chopsticks of full biodegradation again to realize through following technical scheme:

the fully biodegradable disposable chopstick comprises a plant fiber layer as a chopstick main body structure layer, wherein an interface layer which is completely coated with the plant fiber layer is arranged outside the plant fiber layer, a first degradable plastic layer is connected outside the interface layer, and a second degradable plastic layer is connected outside the first degradable plastic layer.

Preferably, the interface layer is a polycaprolactone grafted maleic anhydride resin layer, a polylactic acid grafted maleic anhydride resin layer or a polycaprolactone resin layer.

Preferably, the first degradable plastic layer is a polylactic acid layer.

Preferably, the second degradable plastic layer is a PBAT resin layer.

Preferably, the plant fiber layer is a plant fiber cylinder, and a plurality of reinforcing connecting grooves with two ends extending along the longitudinal direction of the plant fiber cylinder are arranged at intervals along the circumferential direction of the plant fiber cylinder.

Preferably, the cross-sectional shape of the reinforcing connecting grooves is rectangular or trapezoidal, and the groove bottom of each reinforcing connecting groove is recessed inwards along the radial direction of the plant fiber cylinder.

Preferably, the number of the reinforcing connecting grooves is 2 or 3, and the reinforcing connecting grooves are symmetrically arranged.

Preferably, the plant fiber layer is formed by punching crushed plant fibers, and the plant fibers are straws, rice husks or bamboo fibers.

The utility model discloses the beneficial effect who realizes does: the utility model discloses environmental protection, health, pleasing to the eye and practical to the plant fiber cylinder makes it to have low-cost advantage as the major structure material of chopsticks, accords with environmental protection, health requirement simultaneously, and can realize full biodegradation after the abandonment gets into the environment after using, has better economic benefits and social.

Drawings

Fig. 1 is a structural schematic view of a full-biodegradable disposable chopstick.

Fig. 2 is a schematic structural view of fig. 1 taken along a-a.

Fig. 3 is a schematic structural diagram of a plant fiber cylinder with two symmetrically arranged reinforcing connecting grooves.

Fig. 4 is a schematic structural diagram of a plant fiber cylinder with three symmetrically arranged reinforcing connecting grooves.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention clearer and more obvious, the following description of the present invention with reference to the accompanying drawings and embodiments is provided for further details. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Referring to the attached drawings 1-4, the fully biodegradable disposable chopstick 1 of the present invention comprises a plant fiber layer 5 as the main structure layer of the chopstick, an interface layer 4 covering the plant fiber layer 5 completely outside the plant fiber layer 5, a first degradable plastic layer 3 connected outside the interface layer 4, and a second degradable plastic layer 2 connected outside the first degradable plastic layer 3.

Because the plant fiber layer contains a large number of polar groups such as hydroxyl groups, the interface compatibility between the plant fiber layer and the first degradable plastic layer is poor, and the interface binding force is low. To solve this technical problem, an interface layer 4 is disposed between the first degradable plastic layer 3 and the plant fiber layer 5. In a specific embodiment, the interface layer 4 is preferably a polycaprolactone grafted maleic anhydride resin layer, a polylactic acid grafted maleic anhydride resin layer, or a polycaprolactone resin layer.

Specifically, the first degradable plastic layer is preferably a polylactic acid layer (PLA), and the second degradable plastic layer is a PBAT resin layer (poly (terephthalic acid) -succinic acid-1, 4-butanediol copolyester).

The utility model discloses do not do specific injecing to the thickness of each structural layer, it is right simultaneously plant fiber layer 5's shape does not do specific injecing yet, like optional plant fiber square column body, but preferred plant fiber cylinder, specifically, the plant fiber cylinder is formed through the punching press by the plant fiber who pulverizes, plant fiber is straw, rice husk or bamboo fibre.

As a preferred embodiment, a plurality of reinforcing connecting grooves with two ends extending along the longitudinal direction of the plant fiber cylinder are arranged at intervals along the circumferential direction of the plant fiber cylinder. The cross section of each reinforced connecting groove is rectangular or trapezoidal, and the groove bottom of each reinforced connecting groove is inwards sunken along the radial direction of the plant fiber cylinder.

In addition, the number of the reinforcing connecting grooves is 2 or 3, and the reinforcing connecting grooves are symmetrically arranged.

The utility model discloses regard as the major structure material of chopsticks with the plant fiber cylinder, have environmental protection, health, pleasing to the eye and practical characteristics, not only with low costs, can realize full biodegradation after the abandonment gets into the environment in addition with the back, have better economic benefits and social.

While the foregoing description shows and describes the preferred embodiments of the present invention, it is to be understood that the invention is not limited to the forms disclosed herein, but is not intended to be exhaustive or to exclude other embodiments and may be used in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.

Claims

1. A kind of all biodegradation disposable chopsticks, characterized by that: the disposable chopsticks comprise plant fiber layers serving as chopstick main body structure layers, interface layers which completely cover the plant fiber layers are arranged outside the plant fiber layers, first degradable plastic layers are connected outside the interface layers, and second degradable plastic layers are connected outside the first degradable plastic layers.

2. The fully biodegradable disposable chopstick according to claim 1, wherein: the interface layer is a polycaprolactone grafted maleic anhydride resin layer, a polylactic acid grafted maleic anhydride resin layer or a polycaprolactone resin layer.

3. The fully biodegradable disposable chopstick according to claim 2, wherein: the first degradable plastic layer is a polylactic acid layer.

4. The fully biodegradable disposable chopstick according to claim 3, wherein: the second degradable plastic layer is a PBAT resin layer.

5. The fully biodegradable disposable chopstick according to claim 1, wherein: the plant fiber layer is a plant fiber cylinder, and a plurality of reinforcing connecting grooves with two ends extending along the longitudinal direction of the plant fiber cylinder are arranged at intervals along the circumferential direction of the plant fiber cylinder.

6. The fully biodegradable disposable chopstick according to claim 5, wherein: the cross section of each reinforced connecting groove is rectangular or trapezoidal, and the groove bottom of each reinforced connecting groove is inwards sunken along the radial direction of the plant fiber cylinder.

7. The fully biodegradable disposable chopstick according to claim 5 or 6, wherein: the number of the reinforcing connecting grooves is 2 or 3, and the reinforcing connecting grooves are symmetrically arranged.

8. The fully biodegradable disposable chopstick according to any one of claims 1-6, wherein: the plant fiber layer is formed by punching crushed plant fibers, and the plant fibers are straws, rice husks or bamboo fibers.