CN109090805B

CN109090805B - Oil-free middle bundle core formed by plastic

Info

Publication number: CN109090805B
Application number: CN201810976619.4A
Authority: CN
Inventors: 陈麟坤; 谢桐利
Original assignee: Guangdong Qilin Seiko Technology Co ltd
Current assignee: Guangdong Qilin Seiko Technology Co ltd
Priority date: 2018-08-25
Filing date: 2018-08-25
Publication date: 2021-04-30
Anticipated expiration: 2038-08-25
Also published as: CN109090805A

Abstract

The invention relates to the technical field of cosmetics, and provides a plastic-molded oil-free middle-bundle core aiming at the problems of inconvenient production and possible quality reduction of lipstick bodies, wherein the technical scheme is as follows: including the base, rotate well beam pipe of being connected and with base threaded connection lipstick supporting piece with the base, well beam pipe includes: 100 parts of hard plastic; 0.8-2.5 parts of antioxidant; the lipstick holder includes: 100 parts of hard plastic; 4-9 parts of a lubricant; 0.8-3.3 parts of antioxidant; the base comprises; 100 parts of hard plastic; 4-9 parts of a lubricant; 0.8-1.8 parts of antioxidant. By adding the lubricant, the friction force between the parts is reduced, the use hand feeling is ensured, and the lubricant is mixed into the hard plastic during injection molding, so that the subsequent operation of manually smearing the lubricant is not needed, and the production is convenient; because the lubricant is mixed into the hard plastic in proportion during production, the possibility of polluting the lipstick body caused by excessive dosage is reduced, and the quality of the lipstick body is maintained.

Description

Oil-free middle bundle core formed by plastic

Technical Field

The invention relates to the technical field of cosmetics, in particular to an oil-free middle bundle core formed by plastic.

Background

With the development of social civilization, cosmetics become daily products indispensable to consumer life more and more, the requirements on the cosmetics are higher and higher, and the requirements on the makeup effect of the cosmetic paste body and the operation and use feelings of product outer packaging and the like also put forward higher requirements.

Lipstick is a generic term for all lip color cosmetics. The lipstick comprises lipstick, lip stick, lip gloss, lip glaze and the like, can make the lips ruddy and glossy, achieves the effects of moistening and protecting the lips, increases the aesthetic feeling of the face, corrects the contour of the lips and has a supporting effect, is one of necessary beauty cosmetics for women, and can show the sexual feeling and charming of the women.

When the lipstick is used, after the cover is pulled out, the lipstick body is stretched out for use by rotating the middle bundle core, and the lipstick body is recovered for storage by rotating the middle bundle core.

For convenient operation, improve and feel and experience, the well bundle core on general market is all in its inside one deck lubricating oil with the reduction friction, improve and operate the feel, but this kind of processing mode produces inconveniently, needs artifical the smearing, if the lubricating oil has had more can contact with the lipstick lotion that uses and volatilize easily when high temperature and pollute the lipstick lotion and lead to appearing secondary pollution, lead to lipstick lotion quality to descend, consequently also has the space of improving.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide the oil-free middle bundle core formed by plastic, which has the advantages of convenience in production and capability of keeping the quality of lipstick paste.

In order to achieve the purpose, the invention provides the following technical scheme:

an oil-free middle bundle core formed by plastic comprises a base, a middle bundle pipe rotationally connected with the base and a lipstick bearing piece in threaded connection with the base, wherein the lipstick bearing piece is positioned in the middle bundle pipe and axially slides along the middle bundle pipe;

the middle beam tube comprises the following components in parts by weight:

100 parts of hard plastic;

0.8-2.5 parts of antioxidant;

the lipstick supporting piece comprises the following components in parts by weight:

100 parts of hard plastic;

4-9 parts of a lubricant;

0.8-3.3 parts of antioxidant;

the base comprises the following components in parts by mass;

100 parts of hard plastic;

4-9 parts of a lubricant;

0.8-1.8 parts of antioxidant.

By adopting the technical scheme, the lipstick bearing piece and the base are provided with the lubricant, so that the lipstick bearing piece and the base have self-lubricating effect, the friction force at the threaded connection part of the lipstick bearing piece and the base is reduced, and meanwhile, the friction force generated when the middle beam tube and the base rotate relatively and the friction force generated when the middle beam tube and the lipstick bearing piece slide relatively are reduced, so that the friction force required to be overcome when the rotating middle beam tube drives the lipstick bearing piece to extend out or recover through threaded connection is greatly reduced, and the use hand feeling is ensured; because the lubricant is one of the raw materials for forming the lipstick bearing piece and the base, the lubricant is mixed into the hard plastic during injection molding, the subsequent operation of manually smearing the lubricating oil is not needed, and the production is convenient; meanwhile, as the lubricant is mixed into the hard plastic in proportion during production, the possibility of polluting the lipstick body caused by excessive use amount is reduced, and the quality of the lipstick body is maintained; the antioxidant is added into the middle beam tube, the lipstick bearing piece and the base, the antioxidant is utilized to ensure that the hard plastic is not easy to volatilize and decompose during high-temperature processing, meanwhile, the antioxidant has high concentration due to large using amount of the antioxidant, and when the lipstick body generates free radicals, the antioxidant is easy to transmit to the lipstick body due to high concentration to remove the free radicals in the lipstick body, so that the effect of prolonging the quality guarantee period of the lipstick body is achieved, the using amount of the preservative in the lipstick body can be reduced, and the quality and the safety of the lipstick body are improved; because the lipstick bearing piece is contacted with the lipstick body, the distance between the middle beam tube and the lipstick body is small, and the antioxidant dosage of the lipstick bearing piece and the middle beam tube is large, so that the effect of protecting the lipstick body is good.

Preferably, the hard plastics of the middle beam tube, the lipstick bearing part and the base comprise one or more of ABS resin, POM resin, PTEE resin and PP resin.

By adopting the technical scheme, the friction coefficient of the resin with the bottom is utilized, so that the friction force among the middle beam tube, the lipstick supporting piece and the base is less, the using amount of the lubricant can be reduced, and the better use hand feeling can be kept.

Preferably, the hard plastic of the middle beam tube is ABS resin.

By adopting the technical scheme, the forming property is good during injection molding production, the secondary coating effect is good after forming, the medium beam tube is high in hardness, strength and toughness, good in heat resistance and corrosion resistance, excellent in impact resistance and toughness, high in surface gloss, easy to color and easy to process, the comprehensive material performance of the medium beam tube is good, the lipstick paste is protected better, and the production is convenient.

Preferably, the hard plastic of the lipstick holder is POM resin.

By adopting the technical scheme, the lipstick bearing piece has self-lubricating property, the friction coefficient is small, the strength and the rigidity are high, the elasticity is good, and the lipstick bearing piece is positioned in the middle beam tube, so that the lipstick lining piece is not easy to be exposed in ultraviolet rays for a long time to cause the reduction of physical properties, and POM resin can be fully utilized to reduce the friction between the lipstick bearing piece and the base and keep the structure stable.

Preferably, the rigid plastic of the base is POM resin.

By adopting the technical scheme, the base has self-lubricating property, the friction coefficient is small, the strength and the rigidity are high, the elasticity is good, the base part and the middle beam tube are rotationally connected to be protected by the middle beam tube, and lipstick serving as cosmetics is not easy to place under the sun, so that the possibility that the base is corroded and aged by ultraviolet rays is low, and the POM resin can be fully utilized to reduce the friction between the lipstick bearing piece and the base and keep the structure stable.

Preferably, the lubricant for the middle bundle tube, the lipstick holder and the base comprises one or more of polyethylene wax, calcium stearate, oxidized polyethylene wax, stearic acid, glyceryl stearate and paraffin wax.

By adopting the technical scheme, the lubricating effect is better and is not easy to volatilize, the stability is good and the pollution is not easy to occur by utilizing the wax base material and the grease base material.

Preferably, the lubricant of the middle beam tube, the lipstick bearing piece and the base is polyethylene wax.

By adopting the technical scheme, the polyethylene wax is added as the additive, so that the excellent functions of lubricating, dispersing, changing thermal property and increasing melt fluidity of the polyethylene wax are utilized, the interior and the surface of the injection-molded product can have a lubricating effect, and the friction force among the middle beam tube, the lipstick bearing piece and the base is reduced.

Preferably, the antioxidant of the middle beam tube, the lipstick supporting piece and the base comprises one or more of antioxidant 1010, antioxidant 2246, antioxidant CA, antioxidant 164, antioxidant DNP, antioxidant DLTP, antioxidant TNP, antioxidant TPP, antioxidant MB and antioxidant 264.

By adopting the technical scheme, the antioxidant is suitable for plastic processing, so that the processing performance of the middle beam tube, the lipstick supporting piece and the base is better, the production is convenient, and the effect of inhibiting the thermal degradation and the oxidative degradation of the polymer is better.

Preferably, the antioxidant of the middle beam tube, the lipstick bearing piece and the base is antioxidant 2246.

By adopting the technical scheme, the thermal degradation and oxidative degradation of the polymer can be effectively inhibited, the free radicals can be eliminated, the oxidative decomposition process of the lipstick body can be inhibited in time, the quality guarantee period of the lipstick body is prolonged remarkably, and the lipstick body is nontoxic and has no influence on the quality of the lipstick body.

In conclusion, the invention has the following beneficial effects:

1. by adding the lubricant, the friction force between the parts is reduced, the use hand feeling is ensured, and the lubricant is mixed into the hard plastic during injection molding, so that the subsequent operation of manually smearing the lubricant is not needed, and the production is convenient;

2. because the lubricant is mixed into the hard plastic in proportion during production, the possibility of polluting the lipstick body caused by excessive use amount is reduced, and the quality of the lipstick body is maintained;

3. by adding the antioxidant, the hard plastic is not easy to volatilize and decompose during high-temperature processing by using the antioxidant, and meanwhile, because the using amount of the antioxidant is larger, the free radicals in the lipstick body are easy to eliminate, the quality guarantee period of the lipstick body is prolonged, and the using amount of the preservative in the lipstick body can be reduced.

Drawings

FIG. 1 is a schematic view of the overall structure of an oil-free middle bundle tube molded from plastic according to the present invention;

FIG. 2 is a schematic view showing an internal structure of an oil-free intermediate bundle tube for plastic molding according to the present invention;

fig. 3 is an exploded view of the plastic molded oil-free middle bundle tube of the present invention.

In the figure: 1. a middle beam tube; 11. a limiting block; 2. a base; 21. a snap ring; 22. a turntable; 3. a lipstick holder; 31. a lipstick holder; 311. inserting plates; 32. a threaded post; 321. a limiting plane; 322. and (7) clamping blocks.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Example 1

An oil-free middle beam tube formed by plastic comprises a base 2, a middle beam tube 1 rotationally connected with the base 2 and a lipstick supporting piece 3 in threaded connection with the base 2, and is shown in figures 1 and 2.

Referring to fig. 2 and 3, the base 2 is in a shape of a circular tube, an inner thread is disposed on an inner wall of the base 2, a rotary table 22 is fixedly connected to an outer wall of the base 2, and the rotary table 22 is located at one end of the base 2.

The lipstick supporting piece 3 comprises a threaded column 32 and a lipstick holder 31 fixedly connected to one end of the threaded column 32, one end of the lipstick holder 31 is open, a plurality of inserting plates 311 are fixedly connected in the lipstick holder 31, and lipstick bodies are fixed in the lipstick holder 31 through being inserted into the inserting plates 311.

The threaded column 32 is in threaded connection with the base 2, and the lipstick holder 31 is arranged at one end of the base 2 far away from the rotary disc 22.

Base 2 outer wall an organic whole is connected with snap ring 21, and well beam tube 1 is the pipe form, and 1 inner wall sunken have along the draw-in groove of 1 circumference extension of well beam tube, and well beam tube 1 cover is connected on base 2 outer wall and with base 2 rotation, and snap ring 21 card is at the draw-in groove internal rotation, through snap ring 21 draw-in groove cooperation in order to restrict in beam tube 1 and base 2 separation.

Lipstick supporting piece 3 is located well beam tube 1, and well beam tube 1 is equipped with restriction lipstick supporting piece 3 and the restriction piece of well beam tube 1 relative rotation, and the restriction piece includes stopper 11 of fixed connection in the 1 inner wall of well beam tube, and stopper 11 is the square form, and the lateral wall of screw thread post 32 is equipped with spacing plane 321 along the axial, and stopper 11 and spacing plane 321 butt are in order to restrict screw thread post 32 and well beam tube 1 relative rotation.

The lipstick holder 31 is cylindrical, the axial direction of the lipstick holder 31 is consistent with the axial direction of the threaded column 32, and the outer wall of the lipstick holder 31 is abutted against the inner wall of the middle beam tube 1.

A clamping block 322 is protruded on the limiting plane 321, the clamping block 322 is close to one end, far away from the lipstick holder 31, of the threaded column 32, the threaded column 32 is driven by the threads to extend out towards the direction far away from the base 2 through relative rotation of the threaded column 32 and the base 2, and when the threaded column 32 rotates to the state that the limiting block 11 is tightly abutted against the clamping block 322, the threaded column 32 is limited to continue to extend out so as to prevent the threaded column 32 from being separated from the base 2.

The middle beam tube 1 comprises the following components in parts by weight:

100 parts of hard plastic; 0.8 part of antioxidant; 0.2 part of color master batch.

The hard plastic comprises one or more of ABS resin, POM resin, PTEE resin and PP resin.

The antioxidant comprises one or more of antioxidant 1010, antioxidant 2246, antioxidant CA, antioxidant 164, antioxidant DNP, antioxidant DLTP, antioxidant TNP, antioxidant TPP, antioxidant MB and antioxidant 264.

The preparation method of the middle beam tube 1 comprises the following steps:

weighing the hard plastic, the antioxidant and the color master batch according to the formula, putting the materials into a stirring kettle, stirring at the rotating speed of 1000r/min for 5min to form a mixture, putting the mixture into an injection molding machine for injection molding, and performing mold closing, filling, pressure maintaining, cooling, mold opening and mold release to obtain a product.

The lipstick supporting piece 3 comprises the following components in parts by weight:

100 parts of hard plastic; 4 parts of a lubricant; 0.8 part of antioxidant; 0.2 part of color master batch.

The lubricant comprises one or more of polyethylene wax, calcium stearate, oxidized polyethylene wax, stearic acid, glyceryl stearate and paraffin wax.

The lipstick holder 3 is prepared as follows:

the hard plastic, the lubricant, the antioxidant and the color master batch are weighed according to the formula and are placed into a stirring kettle to be stirred at the rotating speed of 1000r/min for 5min to form a mixture, the mixture is placed into an injection molding machine to be subjected to injection molding, and a product is obtained after mold closing, filling, pressure maintaining, cooling, mold opening and demolding.

The base 2 comprises the following components in parts by mass:

The preparation method of the base 2 is as follows:

The working conditions and principles of the embodiment are as follows:

when the lipstick supporting device is used, the middle beam tube 1 is fixed, the base 2 is rotated or the base 2 is fixed, the middle beam tube 1 is rotated, so that the lipstick supporting piece 3 and the base 2 rotate relatively, the lipstick supporting piece 3 is driven to axially extend out along the middle beam tube 1 through threaded connection, and then lipstick paste is driven to extend out of the middle beam tube 1 for use.

After use, the lipstick body can be collected into the middle beam tube 1 by rotating reversely, and can be stored by covering a matched cover body.

Through adding emollient in base 2 and lipstick supporting member 3 for base 2 and lipstick supporting member 3 have better self-lubricating performance, reduce base 2, lipstick supporting member 3 and the mutual frictional force of well beam tube 1, feel experience preferred when making the consumer use the lipstick.

By adding the antioxidant into the base 2, the lipstick bearing piece 3 and the middle beam tube 1, the hard plastic is not easy to volatilize and decompose when being processed, meanwhile, the antioxidant has higher content, so that the concentration of the antioxidant is higher, and because the lipstick body is connected to the lipstick bearing piece 3 and is positioned in the middle beam tube 1, when the lipstick body generates free radicals, the antioxidant in the lipstick bearing piece 3 and the middle beam tube 1 is transferred into the lipstick body to remove the free radicals, so that the lipstick body is not easy to oxidize and decompose, the quality guarantee period of the lipstick body is prolonged, the using amount of the preservative can be reduced when the lipstick body is manufactured, and the quality and the safety of the lipstick body are improved.

Example 2

The difference from example 1 is that:

the middle beam tube 1 comprises the following components in parts by weight:

100 parts of hard plastic; 1.7 parts of an antioxidant; 0.2 part of color master batch.

100 parts of hard plastic; 7 parts of a lubricant; 2.1 parts of an antioxidant; 0.2 part of color master batch.

The base 2 comprises the following components in parts by mass:

100 parts of hard plastic; 7 parts of a lubricant; 1.3 parts of an antioxidant; 0.2 part of color master batch.

Example 3

The difference from example 1 is that:

the middle beam tube 1 comprises the following components in parts by weight:

100 parts of hard plastic; 2.5 parts of an antioxidant; 0.2 part of color master batch.

100 parts of hard plastic; 9 parts of a lubricant; 3.3 parts of an antioxidant; 0.2 part of color master batch.

The base 2 comprises the following components in parts by mass:

100 parts of hard plastic; 9 parts of a lubricant; 1.8 parts of an antioxidant; 0.2 part of color master batch.

Example 4

The difference from example 1 is that:

the middle beam tube 1 comprises the following components in parts by weight:

The hard plastic is ABS resin;

the antioxidant is antioxidant 2246.

The hard plastic is POM resin;

the lubricant is polyethylene wax;

the antioxidant is antioxidant 2246.

The base 2 comprises the following components in parts by mass:

The hard plastic is POM resin;

the lubricant is polyethylene wax;

the antioxidant is antioxidant 2246.

Example 5

The difference from example 4 is that:

the middle beam tube 1 comprises the following components in parts by weight:

100 parts of hard plastic; 1.2 parts of an antioxidant; 0.2 part of color master batch.

100 parts of hard plastic; 5.2 parts of a lubricant; 1.4 parts of an antioxidant; 0.2 part of color master batch.

The base 2 comprises the following components in parts by mass:

100 parts of hard plastic; 5.2 parts of a lubricant; 1.2 parts of an antioxidant; 0.2 part of color master batch.

Example 6

The difference from example 4 is that:

the middle beam tube 1 comprises the following components in parts by weight:

100 parts of hard plastic; 1.8 parts of an antioxidant; 0.2 part of color master batch.

100 parts of hard plastic; 6.7 parts of a lubricant; 2.1 parts of an antioxidant; 0.2 part of color master batch.

The base 2 comprises the following components in parts by mass:

100 parts of hard plastic; 6.7 parts of a lubricant; 1.4 parts of an antioxidant; 0.2 part of color master batch.

Example 7

The difference from example 4 is that:

the middle beam tube 1 comprises the following components in parts by weight:

100 parts of hard plastic; 2.2 parts of an antioxidant; 0.2 part of color master batch.

100 parts of hard plastic; 7.8 parts of a lubricant; 2.8 parts of an antioxidant; 0.2 part of color master batch.

The base 2 comprises the following components in parts by mass:

100 parts of hard plastic; 7.8 parts of a lubricant; 1.6 parts of an antioxidant; 0.2 part of color master batch.

Example 8

The difference from example 4 is that:

the middle beam tube 1 comprises the following components in parts by weight:

The base 2 comprises the following components in parts by mass:

Comparative example 1

The difference from example 4 is that:

the middle beam tube 1 comprises the following components in parts by weight:

100 parts of hard plastic; 0.1 part of antioxidant; 0.2 part of color master batch.

The base 2 comprises the following components in parts by mass:

Specific detection data are shown in tables 1-2

Experiment one

The products of the middle bundle tube 1, the lipstick holder 3 and the base 2 of examples 4 to 8 and comparative example 1 were taken out and assembled at normal temperature, and a test of rotational torsion (unit: in.oz.cm) was carried out by a torsion machine test.

TABLE 1 rotational torque test data

As can be seen from Table 1, the rotational torque decreased significantly after the addition of the polyethylene wax, and decreased with the increase in the amount of the polyethylene wax added. In example 5, when the polyethylene wax is added at 5.2 parts, the rotating torque force ranges from 2.08in.oz.cm to 2.15in.oz.cm, the data fluctuation is small and the industrial standard is met.

By adopting the ABS resin to prepare the middle beam tube 1, the hardness and the strength of the middle beam tube 1 are high, the heat resistance and the corrosion resistance are good, the toughness is good, the impact resistance is excellent, and the effect that the lipstick body is protected by the middle beam tube 1 and is prevented from being damaged is good. Meanwhile, the surface of the middle beam tube 1 is high in glossiness and easy to color, the appearance aesthetic feeling is improved, and the processing is easy, so that the production is convenient.

The base 2 and the lipstick supporting part 3 are prepared by POM resin, so that the base 2 and the lipstick supporting part 3 have good self-lubricating performance and small friction coefficient, the friction force among all the parts is small, and according to the table 1, when no lubricant is added, the rotating torque is between 3.14in.oz.cm and 3.19in.oz.cm, although the rotating torque does not reach the industrial standard, the rotating torque is relatively small, and the effect of reducing the adding amount of the lubricant can be achieved.

Meanwhile, the POM resin has higher strength and rigidity and good elasticity and is not easy to damage, and meanwhile, the lipstick serving as a cosmetic cannot be placed under the sun generally, so that the possibility of structural strength reduction caused by corrosion of the POM resin by ultraviolet rays is greatly reduced, the friction reduction performance of the POM resin can be fully utilized, and the structural stability of the POM resin is ensured.

Experiment two

The medium-bundle tubes 1, beads and spiral products of examples 4 to 8 and comparative example 1 were assembled at room temperature after coming out, and then a pure natural lipstick paste containing no preservative was mounted on the lipstick holder 3 and covered with a mating cover body to assemble a lipstick.

The lipstick body adopts natural organic lipstick of Karen Murrell.

The lipstick was placed in an incubator at 25 ℃ under 99% oxygen for 90 days, and sampled according to the analytical method of GB/T5009.37-2003 edible vegetable oil hygienic standard to detect the peroxide value (in%).

TABLE 2 peroxide number assay data

According to table 2, the peroxide value of the lipstick body is obviously reduced after the content of the antioxidant is increased, that is, the antioxidant capacity of the lipstick body is obviously increased, and the peroxide value is in a descending trend along with the increase of the addition amount of the antioxidant.

Through adopting antioxidant 2246, can effectively restrain thermal degradation and oxidative degradation when rigid plastic processing, and effectively clear away the free radical in the lipstick lotion, improve the oxidation resistance of lipstick lotion, prolong the shelf life of lipstick lotion, make the lipstick lotion can reduce the antiseptic quantity, improve lipstick quality and security, simultaneously because antioxidant 2246 is nontoxic itself, there is not negative effect to the lipstick, and the antioxidant does not directly add into the lipstick lotion, make the antioxidant influence very little to the user, make the security of lipstick lotion higher.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

Claims

1. An oil-free middle bundle core formed by plastic is characterized in that: the lipstick structure comprises a base (2), a middle beam tube (1) rotationally connected with the base (2) and a lipstick bearing piece (3) in threaded connection with the base (2), wherein the lipstick bearing piece (3) is positioned in the middle beam tube (1) and axially slides along the middle beam tube (1), and the middle beam tube (1) comprises a limiting piece for limiting the relative rotation of the lipstick bearing piece (3) and the middle beam tube (1);

the middle beam tube (1) comprises the following components in parts by weight:

100 parts of hard plastic;

0.8-2.5 parts of antioxidant;

the lipstick supporting piece (3) comprises the following components in parts by mass:

100 parts of hard plastic;

4-9 parts of a lubricant;

0.8-3.3 parts of antioxidant;

the base (2) comprises the following components in parts by mass;

100 parts of hard plastic;

4-9 parts of a lubricant;

0.8-1.8 parts of antioxidant.

2. The plastic molded oil-free midbundle core as claimed in claim 1, wherein: the hard plastics of the middle beam tube (1), the lipstick bearing piece (3) and the base (2) comprise one or more of ABS resin, POM resin, PTEE resin and PP resin.

3. The plastic molded oil-free mid-bundle core of claim 2, wherein: the hard plastic of the middle beam tube (1) is ABS resin.

4. The plastic molded oil-free mid-bundle core of claim 2, wherein: the hard plastic of the lipstick bearing piece (3) is POM resin.

5. The plastic molded oil-free mid-bundle core of claim 2, wherein: the hard plastic of the base (2) is POM resin.

6. An oil-free midbundle core molded from plastic according to any one of claims 1 to 5, wherein: the lubricant of the middle beam tube (1), the lipstick supporting piece (3) and the base (2) comprises one or more of polyethylene wax, calcium stearate, oxidized polyethylene wax, stearic acid, glyceryl stearate and paraffin.

7. The plastic molded oil-free mid-bundle core of claim 6, wherein: and the lubricant of the middle beam tube (1), the lipstick supporting piece (3) and the base (2) is polyethylene wax.

8. An oil-free midbundle core molded from plastic according to any one of claims 1 to 5, wherein: the antioxidants of the middle beam tube (1), the lipstick supporting piece (3) and the base (2) comprise one or more of an antioxidant 1010, an antioxidant 2246, an antioxidant CA, an antioxidant 164, an antioxidant DNP, an antioxidant DLTP, an antioxidant TNP, an antioxidant TPP, an antioxidant MB and an antioxidant 264.

9. The plastic molded oil-free mid-bundle core of claim 8, wherein: and the antioxidants of the middle beam tube (1), the lipstick supporting piece (3) and the base (2) adopt an antioxidant 2246.