Short-stroke degradable polymer vacuum bottle and preparation method thereof

Abstract

The present invention relates to a short-stroke degradable polymer vacuum bottle and a preparation method thereof. The invention is designed to solve the technical problems that the head cap and bottle body structure design of the existing similar products is poor, which leads to the difficulty in stabilizing the liquid discharge effect, the difficulty in adjusting and replacing the bottle body according to the capacity, the poor material and the inconvenience in production and preparation. The key points are that the top of the head cap of the vacuum bottle is provided with a square groove, the inner wall of the square groove is provided with side grooves symmetrically arranged in pairs, and the inner wall of the middle center hole of the square groove is provided with convex ribs symmetrically arranged in pairs; the head cap plug is T-shaped, the column head of the head cap is symmetrically provided with flat key surfaces on both sides, and the outer diameter of the square surface at the top of the head cap plug is provided with side blocks symmetrically arranged in pairs and protruding outward; the column head of the head cap plug is inserted into the center hole of the head cap, and the side block of the head cap plug is inserted into the side groove fixed to the head cap, and the bottom plane of the square groove outside the center hole of the head cap is provided with buffer rings equidistantly distributed around the center hole, and the buffer ring distribution protrusions are elliptical, and the nanoneedle sheet is fixed in the side block of the head cap by dispensing glue.

Description

Technical Field

[0001] The invention relates to a vacuum bottle, in particular to a short-stroke degradable polymer vacuum bottle and a preparation method thereof. Background Art

[0002] A vacuum bottle refers to a container that can isolate gas from the outside temperature or isolate external bacteria. The vacuum bottles sold on the market are composed of a cylindrical or ellipsoidal container and a piston placed at the bottom. Its working principle is to use the contraction force of the spring and prevent air from entering the bottle to create a vacuum state, and use atmospheric pressure to push the piston at the bottom of the bottle forward. Some similar products are smaller in size and easy to carry, such as the application number 202022406172.2 disclosed in the Chinese patent literature, the authorization announcement date is 2021.07.23, and the utility model name is "a cosmetic bottle". The head cap of other similar products adopts a flexible plug structure between the nozzle and the center of the nozzle, such as the application number 201520169696.0 disclosed in the Chinese patent literature, the authorization announcement date 2015.08.12, and the utility model name "A sealing structure of a lotion pump"; and the application number 201820742462.4 disclosed in the Chinese patent literature, the authorization announcement date 2019.01.01, and the utility model name "A protective cover, screw thread and pump core integrated lotion pump"; However, the above-mentioned products and similar products have poor limiting and damping effects when used in rotation, and the sealing and stability of the structure are poor. Summary of the invention

[0003] In order to overcome the above shortcomings, the purpose of the present invention is to provide a short-stroke biodegradable polymer vacuum bottle and a preparation method thereof to the art, so as to solve the technical problems of the existing similar products, such as the poor design of the head cap and the bottle body structure, which leads to the difficulty of stabilizing the liquid discharge effect, the difficulty of adjusting and replacing the bottle body according to the capacity, and the difficulty of using biodegradable polymer materials to produce the components. The purpose is achieved through the following technical solution.

[0004] A short-stroke biodegradable polymer vacuum bottle, the bottle body of the vacuum bottle is provided with a large piston, the large circle at the bottle mouth of the bottle body is provided with a pump body assembly, the pump body assembly is buckled and sealed and fixed to the inner circle mouth of the large circle, the pump hole at the valve stem of the pump body assembly is buckled and sealed with the outer diameter ring rib of the liquid inlet hole at the bottom of the head cap, and the liquid outlet hole at the top of the head cap is provided with a head cap plug. The key points of its structural design are that the head cap is tapered from one end of the large circle at the bottom to the other end of the top, a square groove is provided on the top of the head cap, and the inner wall of the square groove is provided with side grooves symmetrically arranged in pairs, a center hole is provided in the middle of the square groove, and the inner wall of the center hole is provided with convex ribs symmetrically arranged in pairs; the head cap plug is T-shaped, and a convex ring is provided on the outer diameter of the column head at the center of the bottom of the head cap plug, flat key surfaces are symmetrically provided on both sides of the column head, and side blocks symmetrically arranged in pairs and protruding outward are provided on the outer diameter of the square surface at the top of the head cap plug; the column head of the head cap plug is inserted into the center hole of the head cap, and at the same time, the convex ring of the column head on the head cap plug is fastened and fixed with the convex rib in the center hole of the head cap, and the side block of the head cap plug is inserted into and fixed to the side groove of the head cap, and an outer gap is provided between the outer diameter of the head cap plug between the side blocks and the inner diameter of the square groove of the head cap, and a channel gap is provided between the flat key surface of the column head on the head cap plug and the convex rib of the center hole of the head cap, and the above-mentioned outer gap and channel gap are liquid outlet channels. Thereby, the liquid flows out of the head cap and the head cap plug through the above-mentioned outer gap and the channel gap. The conical structure of the head cap facilitates the use of liquid discharge at the end of the head cap. The square groove on the top of the head cap ensures the amount and stability of liquid discharge, and ensures that the head cap plug floats in the square groove on the top of the head cap to discharge liquid.

[0005] The side blocks of the head cap plug bulge outwards and upwards at the same time, and the nano-needle sheet is fixed in the side blocks of the head cap by dispensing glue. The nano-needle sheet increases the weight of the head cap plug, balances the center of gravity of the head cap plug, and facilitates the cleaning of the top plane of the head cap plug.

[0006] The bottom plane of the square groove outside the center hole of the head cap is provided with buffer rings equidistantly distributed around the center hole, and the buffer ring distribution protrusions are elliptical. A top gap is provided between the buffer ring of the head cap and the bottom of the square surface of the head cap plug, and the top gap is a liquid outlet channel. The above structure further improves the smoothness of the liquid outlet channel between the top of the head cap and the bottom of the head cap plug, and prevents blockage of the top gap.

[0007] The outer side of the inner ring opening of the top of the large circle is provided with an annular head cap groove, the outer ring opening of the bottom of the head cap is located in the head cap groove of the large circle, the outer side of the pump body assembly fixing part of the bottom of the large circle is provided with an annular inner buckle groove, the outer diameter of the bottle mouth of the bottle body is provided with a buckle ring, the buckle ring of the bottle body and the inner buckle groove of the large circle are buckled in a cylindrical shape, the outer diameter of the head cap groove of the top of the large circle is provided with a step ring, the step ring of the large circle is buckled with the bottom cover opening of the outer cover to form a whole, and the top of the outer cover and the top of the head cap are correspondingly conical. The above structure facilitates the large circle and the bottle body to be fixed together by buckling, and the pump body assembly is fixed to the large circle by buckling.

[0008] The bottom of the head cap groove of the large circle is provided with a lower ring groove smaller than the width of the upper ring groove, and an airtight gap is provided between the outer ring opening of the head cap bottom in the head cap groove and the inner wall outside the head cap groove, so that the head cap can move up and down in the large circle to prevent liquid from flowing into the large circle.

[0009] The bottle body includes two types: 2.2ml bottle body and 1.3ml bottle body. The bottom of the bottle body is provided with a tapered shape that is folded downward. The inner wall above the bottom of the bottle body is provided with two types of inner wall limit steps, 2.2ml and 1.3ml. The stroke of the large piston is respectively limited at the inner wall limit steps. The above are structural embodiments of the two bottle bodies, and it is sufficient that the position of the large piston is different.

[0010] The bottle body comprises a main bottle body and a lower bottom cover, wherein the lower bottom cover is arranged at the bottom of the main bottle body, so that the large piston is put in through the bottom of the main bottle body, and the main bottle body and the lower bottom cover are connected to form the bottle body.

[0011] The pump body assembly is replaced with a full plastic pump body, that is, the spring of the valve stem extending out of the outer diameter of the inner plug on the pump body assembly is replaced with a plastic spring. Thus, the vacuum bottle adopts a full plastic structure, which is convenient for overall recycling.

[0012] The present invention has a reasonable structural design and is easy to use and operate. The components are tightly and stably assembled, have good sealing and stability, have good preparation material performance, and a feasible production method. The head cap main body assembly is easy to replace and produce for different bottle bodies, and the head cap has good liquid discharge and closing stability. It is suitable for use as a short-stroke degradable polymer vacuum bottle, and is a structural improvement of similar products. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the explosion structure of the present invention, in which the lead-out frame is another side structure of the head cap plug.

[0014] Figure 2 It is a schematic diagram of the cross-sectional structure of a 2.2 ml bottle according to the first embodiment of the present invention.

[0015] Figure 3 It is an enlarged view of the head cap structure of the present invention.

[0016] Figure 4 It is a schematic diagram of the cross-sectional structure of the head cap of the present invention.

[0017] Figure 5 It is a schematic diagram of the cross-sectional structure of the large circle of the present invention.

[0018] Figure 6 It is a schematic diagram of the cross-sectional structure of a 1.3 ml bottle according to the second embodiment of the present invention.

[0019] Figure 7 yes Figure 6 Schematic diagram of the cross-sectional structure of the bottle in the open state.

[0020] Figure 8 yes Figure 1 and Figure 6 A schematic diagram of the improved structure of the bottle body is shown, in which the lead frame is a replacement structure of the spring.

[0021] Serial numbers and names of the accompanying drawings: 1. Outer cover, 2. Nano-needle sheet, 3. Head cap plug, 301. Side block, 302. Column head, 4. Head cap, 401. Convex rib, 402. Ring rib, 403. Square groove, 5. Pump body assembly, 6. Large circle, 601. Inner ring mouth, 602. Inner buckle ring, 7. Large piston, 8. Bottle body, 9. Main bottle body, 10. Lower bottom cover, 11. Plastic spring. DETAILED DESCRIPTION

[0022] Now, the structure of the present invention is further described in conjunction with the accompanying drawings. Figure 1-Figure 7 As shown, the bottle body 8 of the vacuum bottle includes two types: 2.2ml bottle body and 1.3ml bottle body. A large piston 7 is arranged in the bottle body. A pump body assembly 5 is arranged in a large circle 6 at the bottle mouth of the bottle body. The pump body assembly is buckled and sealed and fixed to the inner circle mouth 601 of the large circle. The pump hole at the valve stem of the pump body assembly is buckled and sealed with the outer diameter circle rib 402 of the liquid inlet hole at the bottom of the head cap 4. A head cap plug 3 is arranged at the liquid outlet hole at the top of the head cap. Its specific structure is as follows: the head cap is tapered from one end of the large circle at the bottom to the other end of the top, a square groove 403 is provided on the top of the head cap, the inner wall of the square groove is provided with side grooves symmetrically arranged in pairs, a center hole is provided in the middle of the square groove, and the inner wall of the center hole is provided with convex ribs 401 symmetrically arranged in pairs; the head cap plug 3 is T-shaped, the outer diameter of the column head 302 at the center of the bottom of the head cap plug is provided with a convex ring, flat key surfaces are symmetrically arranged on both sides of the column head, and the outer diameter of the square surface at the top of the head cap plug is provided with side blocks 301 symmetrically arranged in pairs and protruding upward and outward; the column head of the head cap plug is inserted into the center hole of the head cap, and at the same time, the convex ring of the column head on the head cap plug is fastened and fixed with the convex rib in the center hole of the head cap, the side block of the head cap plug is inserted and fixed in the side groove of the head cap, an outer gap is provided between the outer diameter of the head cap plug and the inner diameter of the square groove of the head cap between the side blocks, a channel gap is provided between the flat key surface of the column head on the head cap plug and the convex rib of the center hole of the head cap, and the nanoneedle sheet 2 is fixed in the side block of the head cap by dispensing glue. The bottom plane of the square groove outside the center hole of the head cap is provided with buffer rings equidistantly distributed around the center hole, and the buffer ring distribution protrusions are elliptical, and a top gap is provided between the buffer ring of the head cap and the bottom of the square surface of the head cap plug. The top gap, the outer gap and the channel gap are the liquid outlet channels.

[0023] The outer side of the inner ring opening at the top of the above-mentioned large circle is provided with an annular head cap groove, the outer ring opening at the bottom of the head cap is located in the head cap groove of the large circle, the outer side of the pump body assembly fixing part at the bottom of the large circle is provided with an annular inner buckle groove 602, the outer diameter of the bottle mouth of the bottle body is provided with a buckle ring, the buckle ring of the bottle body and the inner buckle groove of the large circle are buckled in a cylindrical shape, the outer diameter of the head cap groove at the top of the large circle is provided with a step ring, the step ring of the large circle is buckled with the bottom cover opening of the outer cover 1 as a whole, and the top of the outer cover is conical with the top of the head cap. At the same time, the inner bottom of the head cap groove of the large circle is provided with a lower ring groove smaller than the width of the upper ring groove, and an airtight gap is provided between the outer ring opening of the bottom of the head cap in the head cap groove and the inner wall of the outer side of the head cap groove. The bottom of the bottle body is provided with a downwardly folded cone, and the inner wall above the bottom of the bottle body is provided with two inner wall limit steps of 2.2ml and 1.3ml, and the stroke of the large piston is respectively limited to the inner wall limit steps. The valve stem of the pump body assembly extends out of the inner plug and is provided with a spring on the outer diameter. One end of the spring abuts against the outer diameter of one end of the top of the valve stem, and the other end abuts against the inner plug. The inner plug is buckled and fixed to the pump port of the pump body. A piston is provided on the outer diameter of the buckling position of the valve stem and the valve needle in the pump body, and an elastic sleeve is provided at the bottom hole of the pump body.

[0024] The specific assembly process of the vacuum bottle is as follows: A1, firstly glue the nano needle sheet and the top of the head cap plug to form a head cap plug assembly; then buckle the assembled head cap plug assembly into the center hole fixed to the head cap through the convex ring of the column head to form a head cap assembly; then install the pump body assembly into the inner ring mouth of the large circle through the buckle to form a large circle assembly with a pump core assembly; then install the head cap assembly with the head cap plug into the buckle position of the pump mouth of the pump body assembly in the pump core assembly through the ring rib of the head cap, match and press into place; finally, match and press the buckle position of the outer cover with the step circle of the large circle to form a nozzle assembly. A2, install the bottom of the large piston into the 2.2mL bottle body or the 1.3ml bottle body until the bottom of the large piston is completely fitted with the inner wall limit step of the bottle body to form a bottle body assembly. A3, press and assemble the nozzle assembly into place through the inner buckle ring of the large circle and the outer diameter of the bottle mouth of the bottle body assembly, and finally assemble into a finished product assembly.

[0025] When in use, open the outer cover and press the head cap to squeeze out the liquid in the bottle. Figure 8 As shown, the bottle body is replaced with a main bottle body 9 and a lower bottom cover 10, the bottom of the main bottle body is provided with a lower bottom cover, and the pump body assembly is replaced with a fully plastic pump body, that is, the spring of the valve stem extending out of the outer diameter of the inner plug on the pump body assembly is replaced with a plastic spring 11. The vacuum bottle can also achieve the same technical purpose and achieve the same technical effect.

[0026] The head cap, large ring and bottle body are made of degradable polymer materials, and the degradable polymer materials include the following components in mass percentage: 65-95% degradable base material, 1-20% plant fiber, 1-10% modified graphene oxide colloid, 2-10% hardness regulator, 0-5% calcium oxide, 1-5% sodium hydroxide, 1-5% styrene-butadiene rubber, the degradable base material is polylactic acid, polybutylene terephthalate or polyethylene terephthalate, the hardness regulator is a sulfonic acid amide hardness regulator, sulfonic acid The acid amide hardness regulator is one or more of p-toluenesulfonic acid amide, N-ethylsulfonic acid amide or N-butylsulfonic acid amide; the above ingredients are weighed according to the formula design and mixed evenly in a mixer, the stirring speed of the high-speed mixer is 50-100rpm, the mixing time is 30-60min, the mixed material is dried, the dried mixture is added to a screw extruder for melt blending and extrusion, the screw speed is 200-300rpm, the temperature of each zone is 150-220℃, granulation is performed after cooling, and screening and packaging are performed.

[0027] In summary, compared with traditional vacuum bottles, this product has the advantages of short travel, simple and beautiful appearance, easy to carry, and in line with market characteristics; this vacuum bottle is used in the skin care and medical beauty industry, and can be better used with medical beauty equipment, which meets the needs of the modern market. At the same time, in order to promote global environmental awareness and reduce the output of plastic products to achieve the purpose of protecting the environment, and due to the needs of product structure and principle, the parts of the known vacuum bottle are made of different raw materials, that is, they are composed of plastic, metal, and glass. The recycled materials of its parts need to be sorted before they can be recycled. This step is cumbersome and extremely inconvenient for energy saving, environmental protection, and the recycling of waste. Therefore, the main structure of the vacuum bottle (including the bottle body and the head cap) is a degradable polymer material, which minimizes the difficulty of recycling the product after use, which is in line with today's green environmental awareness.

Claims

1. A short-stroke biodegradable polymer vacuum bottle, wherein a large piston (7) is provided in a bottle body (8) of the vacuum bottle, a large circle (6) at the bottle mouth of the bottle body is provided with a pump body assembly (5), the pump body assembly is buckled and sealed to the inner circle mouth (601) of the large circle, the pump hole at the valve stem of the pump body assembly is buckled and sealed with the outer diameter circle rib (402) of the liquid inlet hole at the bottom of the head cap (4), and the liquid outlet hole at the top of the head cap is provided with a head cap plug (3); characterized in that The head cap (4) is tapered from one end of the large circle (6) at the bottom to the other end at the top, a square groove (403) is provided on the top of the head cap, side grooves are symmetrically arranged in pairs on the inner wall of the square groove, a center hole is provided in the middle of the square groove, and convex ribs (401) are symmetrically arranged in pairs on the inner wall of the center hole; the head cap plug (3) is T-shaped, a convex ring is provided on the outer diameter of the column head (302) at the center of the bottom of the head cap plug, flat key surfaces are symmetrically provided on both sides of the column head, and side blocks (301) are symmetrically arranged in pairs and protrude outward on the outer diameter of the square surface at the top of the head cap plug; the column head of the head cap plug is inserted into the center hole of the head cap, and at the same time, the convex ring of the column head on the head cap plug is fastened and fixed with the convex rib in the center hole of the head cap, and the side block of the head cap plug is inserted and fixed in the side groove of the head cap, an outer gap is provided between the outer diameter of the head cap plug and the inner diameter of the square groove of the head cap between the side blocks, and a channel gap is provided between the flat key surface of the column head on the head cap plug and the convex rib of the center hole of the head cap, and the above-mentioned outer gap and channel gap are liquid outlet channels.

2. The short-stroke biodegradable polymer vacuum bottle according to claim 1, characterized in that The side block (301) of the head cap plug (3) bulges outwards and upwards at the same time, and the nano-needle sheet (2) is fixed in the side block of the head cap by glue dispensing.

3. The short-stroke degradable polymer vacuum bottle according to claim 1, characterized in that The bottom plane inside the square groove (403) outside the center hole of the head cap (4) is provided with buffer rings equidistantly distributed around the center hole, and the protrusions distributed on the buffer rings are elliptical. A top gap is provided between the buffer ring of the head cap and the bottom of the square surface of the head cap plug (3), and the top gap is a liquid outlet channel.

4. The short-stroke degradable polymer vacuum bottle according to claim 1, characterized in that An annular head cap groove is provided on the outside of the inner ring opening (601) at the top of the large ring (6), the outer ring opening at the bottom of the head cap (4) is located in the head cap groove of the large ring, an annular inner buckle groove (602) is provided on the outside of the pump body assembly (5) fixing part at the bottom of the large ring, a buckle ring is provided on the outer diameter of the bottle mouth of the bottle body (8), the buckle ring of the bottle body buckles with the inner buckle groove of the large ring to form a cylindrical shape, a step ring is provided on the outer diameter of the head cap groove at the top of the large ring, the step ring of the large ring buckles with the bottom cover opening of the outer cover (1) to form a whole, and the top of the outer cover and the top of the head cap are conical in correspondence.

5. The short-stroke degradable polymer vacuum bottle according to claim 4, characterized in that A lower annular groove having a width smaller than that of the upper annular groove is provided at the bottom of the head cap groove of the large circle (6), and a gap is provided between the outer ring opening of the bottom of the head cap (4) in the head cap groove and the outer inner wall of the head cap groove.

6. The short-stroke degradable polymer vacuum bottle according to claim 1, characterized in that The bottle body (8) comprises two types: a 2.2 ml bottle body and a 1.3 ml bottle body. The bottom of the bottle body is provided with a tapered shape that is folded downwards. The inner wall above the bottom of the bottle body is provided with two types of inner wall limit steps, 2.2 ml and 1.3 ml. The travel of the large piston (7) is respectively limited at the inner wall limit steps.

7. The short-stroke degradable polymer vacuum bottle according to claim 1, characterized in that The bottle body (8) comprises a main bottle body (9) and a lower bottom cover (10), and the lower bottom cover is provided at the bottom of the main bottle body.

8. The short-stroke degradable polymer vacuum bottle according to claim 1, characterized in that The pump body assembly (5) is replaced by a fully plastic pump body assembly, that is, the spring on the pump body assembly through which the valve stem extends out of the outer diameter of the inner plug is replaced by a plastic spring (11).

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