阅读说明：本技术 一种热封层cpe包装膜专用线型料的助剂及其制备方法 (Auxiliary agent of special linear material for heat-sealing layer CPE packaging film and preparation method thereof ) 是由 孙秀平 李英杰 彭令才 于 2020-06-15 设计创作，主要内容包括：本发明公开了一种热封层CPE包装膜专用线型料的助剂及其制备方法,涉及专用线型料助剂相关领域,为解决现有技术中的包装物品时自身强度和拉伸性不足,容易破损,导致该区域的热封层CPE包装膜只能废弃不能使用的问题。以质量百分比计,包括以下组分：光稳定剂15-30％；聚环戊二烯20-35％；玻璃纤维15-30％；抗静电剂2-5％；芥酸胺10-15％；硅藻土10-25％；天然抗氧化剂10-25％；所述热封层CPE包装膜专用线型料的助剂具体包括以下组分：光稳定剂20％；聚环戊二烯25％；玻璃纤维18％；抗静电剂2％；芥酸酰胺15％；硅藻土10％；天然抗氧化剂10％。(The invention discloses an auxiliary agent of a special linear material for a heat-seal layer CPE packaging film and a preparation method thereof, relates to the field related to the auxiliary agent of the special linear material, and aims to solve the problems that the strength and the stretchability of a packaged article in the prior art are insufficient, the packaged article is easy to damage, and the heat-seal layer CPE packaging film in the area can only be discarded and cannot be used. The composite material comprises the following components in percentage by mass: 15-30% of light stabilizer; 20-35% of polycyclopentadiene; 15-30% of glass fiber; 2-5% of antistatic agent; 10-15% of erucic acid amine; 10-25% of diatomite; 10-25% of natural antioxidant; the auxiliary agent of the special linear material for the heat-sealing layer CPE packaging film specifically comprises the following components: 20% of light stabilizer; 25% of polycyclopentadiene; 18% of glass fiber; 2% of antistatic agent; 15% of erucamide; 10% of diatomite; 10% of natural antioxidant.)

1. The auxiliary agent of the special linear material for the heat-sealing layer CPE packaging film is characterized by comprising the following components in percentage by mass:

2. the additive for the special linear material for the heat-seal layer CPE packaging film according to claim 1, characterized by comprising the following components:

3. the additive of the special line material for the heat-seal layer CPE packaging film according to claim 1, characterized in that: the light stabilizer is hindered amine light stabilizer, and is any one of light stabilizer 622, light stabilizer 944, light stabilizer N-30 and light stabilizer 3346.

4. The additive of the special line material for the heat-seal layer CPE packaging film according to claim 1, characterized in that: the sizes of the glass fibers are less than or equal to 5 mu m.

5. The additive of the special line material for the heat-seal layer CPE packaging film according to claim 1, characterized in that: the antistatic agent is a nonionic composite antistatic agent.

6. The additive of the special line material for the heat-seal layer CPE packaging film according to claim 1, characterized in that: the natural antioxidant is extracted from cereals, fruits and vegetables, oil crop seeds, leguminous plants, spice plants, flowers and plants and Chinese herbal medicines.

7. A preparation method of a special linear material auxiliary agent for a heat-sealing layer CPE packaging film is characterized by comprising the following steps:

s1: screening the glass fiber and the diatomite, and screening out the glass fiber and the diatomite which do not meet the requirement of the particle size;

s2: weighing raw materials according to the mixture ratio of the raw materials;

s3: putting a light stabilizer, polycyclopentadiene, an antistatic agent and erucamide into a reaction kettle for later use;

s4: adjusting the temperature of the reaction kettle in the S3 to 120-;

S5: pouring the diatomite with the particle size meeting the requirement and the natural antioxidant into a reaction kettle of S4, stirring at low speed, and stirring for reaction for 10 min;

s6: adding the glass fiber with the particle size meeting the requirement into a reaction kettle of S5, stirring at a low speed, and stirring for reaction for 10 min;

s7: and (3) waiting for the cooling of the reactants in the reaction kettle, and discharging after cooling to obtain the auxiliary agent of the special linear material for the heat-seal layer CPE packaging film.

8. The preparation method of the special line-type material additive for the heat-seal layer CPE packaging film according to claim 7, characterized by comprising the following steps: in the step S7, when the heat-seal layer CPE packaging film is prepared by the special linear material auxiliary agent, the pigment and the resin carrier are weighed according to the proportion and are reversely premixed, then the mixture is mechanically stirred and mixed at high speed, and the mixture is cast into a film to obtain the heat-seal layer CPE packaging film.

9. The preparation method of the special line-type material additive for the heat-seal layer CPE packaging film according to claim 8, characterized by comprising the following steps: before the mixture is cast into a film, the mixture is poured onto a fine screen, and the flowing-down mixture is led to casting equipment.

Technical Field

The invention relates to the field of special linear material additives, in particular to an additive of a special linear material for a heat-sealing layer CPE packaging film and a preparation method thereof.

Background

The film can be classified into cast film (CPE), blown film (IPE), low-foam film, etc. according to the difference of the film forming process. Compared with a CPE film, the IPE film has much better tensile strength and opening performance, and can be used as food bags, garment bags and the like by adopting front printing; but the CPE film has uniform thickness, better surface gloss, transparency and heat sealing performance than PE, and can be printed on the front side and the back side. CPE films are mainly used as the inner layer of composite bags and the packaging of cosmetics, pickles and pastries; the low-foaming film has good decoration, thick texture and difficult stretching deformation, adopts front printing, and is used as a new year picture, a trademark, a hand bag and the like. The development of the plastic industry technology, the current use of the CPE film in society is very common, and the CPE film is manufactured by introducing foreign advanced technology and finally processing and manufacturing the CPE film by fine process, so that the end product of the CPE film is widely applied to soft packaging of plastic films.

After the heat-seal layer CPE packaging film is produced by the conventional auxiliary agent, the heat-seal layer CPE packaging film is not good enough in property, and is not enough in strength and stretchability when packaged, so that the heat-seal layer CPE packaging film in the area is easy to damage and can only be discarded and not used; therefore, the market urgently needs to develop an auxiliary agent of the special linear material for the heat-sealing layer CPE packaging film and a preparation method thereof to help people solve the existing problems.

Disclosure of Invention

The invention aims to provide an auxiliary agent of a special linear material for a heat-seal layer CPE packaging film and a preparation method thereof, which aim to solve the problems that the heat-seal layer CPE packaging film in the area can only be discarded and can not be used due to the fact that the packaged goods proposed in the background art are insufficient in strength and stretchability and are easy to damage.

In order to achieve the purpose, the invention provides the following technical scheme: the auxiliary agent of the special linear material for the heat-sealing layer CPE packaging film comprises the following components in percentage by mass:

preferably, the auxiliary agent of the special linear material for the heat-seal layer CPE packaging film specifically comprises the following components:

preferably, the light stabilizer is a hindered amine light stabilizer selected from the group consisting of light stabilizer 622, light stabilizer 944, light stabilizer N-30 and light stabilizer 3346.

Preferably, each size of the glass fiber is less than or equal to 5 mu m.

Preferably, the antistatic agent is a nonionic composite antistatic agent.

Preferably, the natural antioxidant is extracted from cereals, fruits and vegetables, oil crop seeds, leguminous plants, spice plants, flowers and herbs.

A preparation method of a special linear material auxiliary agent for a heat-sealing layer CPE packaging film comprises the following steps:

S1: screening the glass fiber and the diatomite, and screening out the glass fiber and the diatomite which do not meet the requirement of the particle size;

s2: weighing raw materials according to the mixture ratio of the raw materials;

s3: putting a light stabilizer, polycyclopentadiene, an antistatic agent and erucic acid amine into a reaction kettle for later use;

s4: adjusting the temperature of the reaction kettle in the S3 to 120-;

s5: pouring the diatomite with the particle size meeting the requirement and the natural antioxidant into a reaction kettle of S4, stirring at low speed, and stirring for reaction for 10 min;

s6: adding the glass fiber with the particle size meeting the requirement into a reaction kettle of S5, stirring at a low speed, and stirring for reaction for 10 min;

s7: waiting for the cooling of the reactants in the reaction kettle, discharging after cooling to obtain the auxiliary agent of the special linear material for the heat-sealing layer CPE packaging film

Preferably, in S7, when the heat-seal layer CPE packaging film is prepared by using the special linear material assistant, the pigment and the resin carrier are weighed in proportion and premixed in a reverse direction, and then mechanically stirred and mixed at a high speed, and the mixture is cast into a film to obtain the heat-seal layer CPE packaging film.

Preferably, before the mixture is cast into a film, the mixture is poured onto a fine screen, and the flowing mixture is led to casting equipment.

Compared with the prior art, the invention has the beneficial effects that:

1. in the invention, glass fiber is added, the glass fiber is an inorganic non-metallic material with excellent performance, and has various types, the advantages of good insulation property, strong heat resistance, good corrosion resistance and high mechanical strength, the glass fiber is usually used as a reinforcing material in composite materials, an electric insulating material, a heat insulation material, a circuit substrate and other various fields of national economy, when the glass fiber is used as an auxiliary raw material, certain heat resistance and corrosion resistance are provided for a heat sealing layer CPE packaging film after production, the glass fiber can be used as a stiffening agent to improve the property of the heat sealing layer CPE packaging film, the strength of the CPE packaging film is enhanced, the CPE packaging film is not easy to damage, once a hole is formed, the CPE packaging film is not easy to be pulled and expanded, the glass fiber and kieselguhr can be used as an anti-blocking agent of the auxiliary agent together with the kieselguhr, the glass fiber and the kieselguhr can protrude to the surface of the, the adhesive tape does not adhere, surface tearing caused by adhesion can not cause appearance defects, the adhesive tape is matched with erucamide to avoid the adhesion condition in the winding process of the packaging film, and compared with oleamide, the erucamide provides a lower friction coefficient for the heat-seal layer CPE packaging film, so that the smoothness is greatly improved;

2. In the invention, the diatomite can be matched with the glass fiber to be used as an anti-adhesion agent and can also be used as a blocking agent, and the diatomite can be used as a slow release agent of the antioxidant, so that the rapid release of the antioxidant can be avoided, and the tortuosity of permeation paths of substances such as oxygen and the like can be increased, thereby enhancing the blocking property of the film on gas;

3. in the invention, the natural antioxidant is extracted from grains, fruits and vegetables, oil crop seeds, leguminous plants, spice plants, flowers and herbs, and the antioxidant is not directly synthesized by chemical method, and the chemical synthesized antioxidant is possibly safe when in use, is more natural and healthy compared with the chemical synthesized antioxidant, has various extraction sources, and can be freely selected and prepared according to actual conditions;

4. in the invention, many raw materials have multiple functions, for example, the glass fiber can be used as an anti-blocking agent and a stiffening agent, and the diatomite can be used as an anti-blocking agent and a blocking agent, namely a slow release agent of an antioxidant, so that various performances of the heat-sealing layer CPE packaging film are improved, the types of the added raw materials are relatively reduced, the production cost is reduced, and the heat-sealing layer CPE packaging film is suitable for large-scale factory production.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments.

The embodiment provided by the invention comprises the following steps: the auxiliary agent of the special linear material for the heat-sealing layer CPE packaging film comprises the following components in percentage by mass:

light stabilizers, refer to substances added to block or inhibit the photo-redox or photo-aging process. Under sunlight or strong fluorescence (because of containing more harmful ultraviolet rays than common fluorescent lamps), the self-oxidation is caused by absorbing ultraviolet rays, so that the polymer is degraded, and the appearance and the physical and mechanical properties of the product are deteriorated, and the process is called photooxidation-reduction or photoaging. The added antioxidant is used for resisting oxidation of the packaging film packaging article, and the light stabilizer is used for inhibiting the oxidation of the packaging film.

The polycyclopentadiene is used for strengthening according to the principle of promoting nucleation, plays a heterogeneous nucleation role through the existence of fine particles, promotes and improves crystallization, enables crystal grains to be uniform and refined, and improves the rigidity of products.

The glass fiber is an inorganic non-metallic material with excellent performance, and has the advantages of good insulativity, strong heat resistance, good corrosion resistance and high mechanical strength, the glass fiber is usually used as a reinforcing material in composite materials, an electrical insulating material, a heat insulation material, a circuit substrate and other various fields of national economy, and when the glass fiber is used as an auxiliary raw material, certain heat resistance and corrosion resistance are provided for a heat-sealing layer CPE packaging film after production, and the glass fiber can be used as a stiffening agent to improve the property of the heat-sealing layer CPE packaging film, so that the strength of the heat-sealing layer CPE packaging film is enhanced, the heat-sealing layer CPE packaging film is not easy to damage, and once a hole is formed, the.

The antistatic principle of the antistatic agent is that the hydrophilic group absorbs water vapor in air on the surface of plastic or a conductive layer is arranged on the surface to reduce the surface resistance value.

Due to the polar groups, the incompatible fatty acid amide can migrate to the surface layer of the film, and form a smooth surface after solidification and crystallization, thereby reducing the friction coefficient of the film. The coefficient of friction increases as the thickness of the film decreases, which may require an increased amount of slip agent to maintain a lower coefficient of friction.

The diatomite is generally formed by silicate remains after death of unicellular algae which are commonly called diatoms, has some unique properties such as porosity, lower concentration, larger specific surface area, relative incompressibility and chemical stability, can be used as an anti-blocking agent by being matched with glass fiber, can also be used as a slow-release agent of an antioxidant, can avoid the rapid release of the antioxidant, and increases the tortuosity of a permeation path of substances such as oxygen, so that the barrier property of the film to gas is enhanced.

The natural antioxidant mainly refers to the antioxidant contained in cereals, fruits and vegetables, oil crop seeds, leguminous plants, spice plants, flowers and plants and Chinese herbal medicines. These cereals, fruits and vegetables, oil crop seeds, legumes, spices, flowers and herbs contain very high levels of natural antioxidants such as vitamin A, C, E, P, polyphenols, etc. The plant active selenium is a high-quality natural antioxidant, and the tea leaves also contain natural antioxidants such as polyphenol and the like. Natural antioxidants are safer and healthier than chemically synthesized antioxidants.

Further, the auxiliary agent of the special linear material for the heat-sealing layer CPE packaging film specifically comprises the following components:

further, the light stabilizer is a hindered amine light stabilizer, and is any one of light stabilizer 622, light stabilizer 944, light stabilizer N-30 and light stabilizer 3346.

Furthermore, the sizes of the glass fibers are less than or equal to 5 mu m.

Further, the antistatic agent is a nonionic composite antistatic agent.

Further, the natural antioxidant is extracted from grains, fruits and vegetables, oil crop seeds, leguminous plants, spice plants, flowers and herbs.

A preparation method of a special linear material auxiliary agent for a heat-sealing layer CPE packaging film comprises the following steps:

s1: screening the glass fiber and the diatomite, and screening out the glass fiber and the diatomite which do not meet the requirement of the particle size;

s2: weighing raw materials according to the mixture ratio of the raw materials;

s3: putting a light stabilizer, polycyclopentadiene, an antistatic agent and erucic acid amine into a reaction kettle for later use;

s4: adjusting the temperature of the reaction kettle in the S3 to 120-;

s5: pouring the diatomite with the particle size meeting the requirement and the natural antioxidant into a reaction kettle of S4, stirring at low speed, and stirring for reaction for 10 min;

S6: adding the glass fiber with the particle size meeting the requirement into a reaction kettle of S5, stirring at a low speed, and stirring for reaction for 10 min;

s7: and (3) waiting for the cooling of the reactants in the reaction kettle, and discharging after cooling to obtain the auxiliary agent of the special linear material for the heat-seal layer CPE packaging film.

Further, in S7, when the heat-seal layer CPE packaging film is prepared by the special linear material auxiliary agent, the pigment and the resin carrier are weighed according to the proportion and are premixed in a reverse direction, then the mixture is stirred and mixed at a high speed by a machine, and the mixture is cast into a film to obtain the heat-seal layer CPE packaging film.

Further, before the mixture is cast into a film, the mixture is poured onto a fine screen, and the mixture flowing down is led to casting equipment. Due to the requirement on the quality control of the heat-seal layer CPE packaging film, other substances are prevented from being mixed in the mixture, the mixture is sieved, the diameter of a sieve pore is very small, a certain time is needed for the mixture sieved by a fine sieve to wait for the mixture meeting the requirement to flow down, and the mixture which does not meet the requirement can be treated and then cast again to form a film.

The working principle is as follows: extracting natural antioxidant from cereals, fruits and vegetables, oil crop seeds, leguminous plants, spice plants, flowers and herbs and Chinese herbal medicines according to actual production environment; screening the glass fiber and the diatomite, and screening out the glass fiber and the diatomite which do not meet the requirement of the particle size; thereby completing the pretreatment of the material. Weighing raw materials according to the mixture ratio of the raw materials; putting a light stabilizer, polycyclopentadiene, an antistatic agent and erucic acid amine into a reaction kettle for later use; adjusting the temperature of the reaction kettle to 120-; pouring the diatomite with the particle size meeting the requirement and the natural antioxidant into a reaction kettle, stirring at a low speed, and stirring for reaction for 10 min; adding the glass fiber with the particle size meeting the requirement into a reaction kettle, stirring at a low speed, and stirring for reaction for 10 min; and (3) waiting for the cooling of the reactants in the reaction kettle, and discharging after cooling to obtain the auxiliary agent of the special linear material for the heat-seal layer CPE packaging film. Weighing the special linear material auxiliary agent, the pigment and the resin carrier according to the proportion, carrying out reverse premixing, then mechanically stirring and mixing at high speed, pouring the mixture onto a fine screen, leading the flowing-down mixture to a casting device, and carrying out casting film forming on the mixture to obtain the heat-sealing layer CPE packaging film.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.