CN114539670A - CPP book cover formula and preparation process thereof - Google Patents
CPP book cover formula and preparation process thereof Download PDFInfo
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- CN114539670A CN114539670A CN202210250178.6A CN202210250178A CN114539670A CN 114539670 A CN114539670 A CN 114539670A CN 202210250178 A CN202210250178 A CN 202210250178A CN 114539670 A CN114539670 A CN 114539670A
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- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- 238000009472 formulation Methods 0.000 title claims description 4
- 239000004743 Polypropylene Substances 0.000 claims abstract description 27
- -1 polypropylene Polymers 0.000 claims abstract description 27
- 229920001155 polypropylene Polymers 0.000 claims abstract description 27
- 239000002216 antistatic agent Substances 0.000 claims abstract description 18
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 18
- 229920000092 linear low density polyethylene Polymers 0.000 claims abstract description 18
- 239000004707 linear low-density polyethylene Substances 0.000 claims abstract description 18
- 239000011347 resin Substances 0.000 claims abstract description 18
- 229920005989 resin Polymers 0.000 claims abstract description 18
- 239000000463 material Substances 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims description 10
- 238000007599 discharging Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000005266 casting Methods 0.000 claims description 4
- 238000005303 weighing Methods 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 3
- 230000005489 elastic deformation Effects 0.000 claims description 3
- 238000010096 film blowing Methods 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 238000010345 tape casting Methods 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 238000010079 rubber tapping Methods 0.000 claims description 2
- 210000003934 vacuole Anatomy 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 2
- 239000002994 raw material Substances 0.000 abstract description 10
- 238000009395 breeding Methods 0.000 abstract description 6
- 230000001488 breeding effect Effects 0.000 abstract description 6
- 239000000428 dust Substances 0.000 abstract description 6
- 230000003068 static effect Effects 0.000 abstract description 6
- 230000001580 bacterial effect Effects 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000005611 electricity Effects 0.000 abstract description 3
- 238000009826 distribution Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 abstract description 2
- 239000012535 impurity Substances 0.000 abstract description 2
- 239000000088 plastic resin Substances 0.000 abstract description 2
- 239000010408 film Substances 0.000 abstract 3
- 239000010409 thin film Substances 0.000 abstract 2
- 241000894006 Bacteria Species 0.000 abstract 1
- 230000033001 locomotion Effects 0.000 description 9
- 238000003756 stirring Methods 0.000 description 6
- 239000011091 composite packaging material Substances 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 235000008429 bread Nutrition 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
- B29B7/06—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices
- B29B7/08—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices shaking, oscillating or vibrating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
- B29C69/001—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore a shaping technique combined with cutting, e.g. in parts or slices combined with rearranging and joining the cut parts
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/10—Homopolymers or copolymers of propene
- C08J2323/12—Polypropene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/04—Homopolymers or copolymers of ethene
- C08J2423/08—Copolymers of ethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/04—Antistatic
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The invention discloses a CPP book cover formula and a preparation process thereof, relates to a CPP film production technology, and aims to solve the problem that the conventional CPP film is a plastic resin material, and after friction is carried out for many times, the surface static electricity is accumulated, so that a serious static phenomenon can occur, and dirt such as dust, hair and the like is adhered to the CPP film, so that bacteria breeding is easy to occur, and the technical scheme has the key points that: including polypropylene, linear low density polyethylene resin, antistatic agents, and opening agents. The CPP book cover with the antistatic property can be obtained, the static phenomenon is not easy to occur, the adhesion of impurities such as dust or hair on the CPP book cover is avoided, the bacterial breeding caused by the adhesion of the dirt is avoided, the problem of uneven material distribution is avoided when the raw materials of the CPP thin film obtained by the production process are heated and melted, and the consistency of the strength of the CPP thin film can be ensured.
Description
Technical Field
The invention relates to a CPP film production technology, in particular to a CPP book cover formula and a preparation process thereof.
Background
The CPP film is an unstretched polypropylene film prepared by a tape casting method, has the characteristics of light weight, high transparency, strong mechanical adaptability, good moisture resistance and heat resistance and the like, is widely applied to bread, fiber fabrics and composite packaging materials, is mainly used as a base material in the composite packaging materials, can be compounded with other films, and has good heat resistance.
The existing CPP film is actually a plastic resin material, and after friction is carried out for multiple times, the static electricity accumulated on the surface of the CPP film can cause serious static electricity, so that dust, hair and other dirt are adhered to the CPP film, and the problem of bacterial breeding is easy to occur.
Therefore, a new solution is needed to solve this problem.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a CPP book cover formula and a preparation process thereof, the CPP book cover with antistatic property can be obtained, the static phenomenon is not easy to occur, the adhesion of impurities such as dust or hair on the CPP book cover is avoided, the bacterial breeding caused by the adhesion of dirt is avoided, the problem of uneven material distribution can not occur when the raw materials of the CPP film obtained by the production process are heated and melted, and the strength consistency of the CPP film can be ensured.
The technical purpose of the invention is realized by the following technical scheme: the CPP book cover formula comprises polypropylene, linear low-density polyethylene resin, an antistatic agent and an opening agent.
By adopting the technical scheme and the formula, the CPP book cover can have antistatic performance, so that after the CPP book cover is used for a long time and rubbed, dirt such as dust or hair can not be attached to the CPP book cover, the CPP book cover can be kept in a clean state, and the problem of bacterial breeding is not easy to occur.
The invention is further configured to: the proportions of the polypropylene, the linear low-density polyethylene resin, the antistatic agent and the opening agent are 65-75%, 25-30%, 0-1% and 0-1%.
By adopting the technical scheme, the method has the advantages that,
the invention is further configured to: the proportions of the polypropylene, the linear low-density polyethylene resin, the antistatic agent and the opening agent are 69-72%, 27-30%, 0-0.4% and 0-0.4%.
By adopting the technical scheme, the method has the advantages that,
the invention also provides a preparation process of the CPP book cover, which comprises the following steps,
preparing materials, namely weighing polypropylene, linear low-density polyethylene resin, an antistatic agent and an opening agent according to a ratio;
step two, putting the polypropylene into a kettle body of a stirrer, and shaking the polypropylene up and down in the vertical direction and in the horizontal direction through the kettle body, wherein the two shaking modes are performed alternately at random;
step three, adding linear low-density polyethylene resin, an antistatic agent and a tapping agent into the kettle body at intervals in sequence in the polypropylene shaking process, and keeping the shaking time for 10-15 min;
pouring, namely pouring the material fully stirred in the stirrer kettle body into a CPP casting machine;
step five, heating through a CPP casting machine and starting film blowing;
step six, flashing, cutting the film as required;
and step seven, rolling and storing.
Through adopting above-mentioned technical scheme, through above-mentioned step for people can obtain the CPP film comparatively conveniently, and the raw materials in this step can obtain abundant mixing stirring, makes it need not to carry out too much stirring when heating, can make the raw materials of molten state keep the even state of texture, makes the CPP film that finally obtains have better intensity.
The invention is further configured to: the agitator includes the cauldron body and sets up the support frame in its both sides, be provided with drive arrangement in the support frame, drive arrangement is used for driving the cauldron body and can moves the horizontal axis between the relative both sides support frame relatively to the support frame direction of height and take place reciprocating rotation.
The invention is further configured to: the spout of vertical setting is seted up to one side that the support frame was faced each other, set up the recess with spout upper end intercommunication in the support frame, drive arrangement includes servo motor, fixed connection in the recess that cylinder, fixed connection in the spout bottom are held at the cylinder, the flexible push rod of serving of fixed connection at the cylinder, fixed connection keep away from the bearing frame of cylinder one end and the pivot of fixed connection at the bearing frame inner circle at the push rod, pivot and the cauldron body fixed connection, the one end that the cauldron body was kept away from in the pivot is provided with elastic friction assembly.
The invention is further configured to: the elastic friction assembly comprises a plurality of friction plates which are distributed in an annular array mode by taking the central axis of the rotating shaft as a reference, each friction plate comprises a flat part, an inclined part fixedly connected to one end of the flat part and a lifting part fixedly connected to one end, far away from the flat part, of the inclined part, a distance exists between the lifting part and one end, far away from the kettle body, of the rotating shaft, the friction plates have elastic deformation performance, and the roughness of each friction plate are 1.6-3.2 mu m.
The invention is further configured to: the cauldron body includes urceolus and sets up the inner tube wherein, through a plurality of connecting block fixed connection between inner tube and the urceolus, just vacuole formation between urceolus and the inner tube, set up inlet port and the venthole with the cavity intercommunication on the urceolus, the inlet port has the admission valve through the admission valve pipe intercommunication, the venthole has the check valve through the check valve pipe intercommunication.
Through adopting above-mentioned technical scheme, through setting up check valve and admission valve to make when the cauldron body will stir mixing operation, can open the check valve and bleed through closing the admission valve, thereby make and keep the vacuous state as far as in the cavity, make the sound of stirring can not wear out, can avoid the propagation of noise.
The invention is further configured to: the support frame is fixedly connected with a central controller, and the central controller is coupled with the air cylinder, the servo motor, the one-way valve and the air inlet valve.
Through adopting above-mentioned technical scheme, through setting up central controller to make cylinder, servo motor, check valve and admission valve carry out intelligent control, it is more convenient.
The invention is further configured to: and the two ends of the inner cylinder are communicated with a feeding pipe and a discharging pipe which penetrate through the outer cylinder.
Through adopting above-mentioned technical scheme, through setting up the inlet pipe to make linear low density polyethylene resin, antistatic agent and opening agent can enter into the inner tube in proper order, and then the raw materials of stirring can leave through the discharging pipe.
In conclusion, the invention has the following beneficial effects:
1. through the formula, the CPP book cover can have antistatic performance, so that after the CPP book cover is used and rubbed for a long time, dirt such as dust or hair can not be attached to the CPP book cover, the CPP book cover can be kept in a clean state, and the problem of bacterial breeding is not easy to occur.
2. Through the steps, people can conveniently obtain the CPP film, the raw materials in the step can be fully mixed and stirred, excessive stirring is not needed when the CPP film is heated, the raw materials in a molten state can be kept in a state with uniform texture, and the finally obtained CPP film has good strength.
Drawings
FIG. 1 is a schematic view of a mixer according to the present invention;
FIG. 2 is an enlarged view taken at A in FIG. 1;
FIG. 3 is a partial cross-sectional view of a blender according to the present invention;
FIG. 4 is an enlarged view at B in FIG. 3;
FIG. 5 is a partial exploded view of the mixer of the present invention with one side of the support frame removed;
FIG. 6 is an enlarged view at C of FIG. 5;
FIG. 7 is a sectional view of the autoclave body in the present invention;
FIG. 8 is an enlarged view taken at D in FIG. 7;
FIG. 9 is a schematic structural view of a friction plate according to the present invention.
In the figure: 1. a support frame; 2. a kettle body; 3. a feed pipe; 4. a discharge pipe; 5. a chute; 6. a rotating shaft; 7. a bearing seat; 8. a spring; 9. a cylinder; 10. a push rod; 11. a groove; 12. a servo motor; 13. a friction disk; 14. a friction plate; 15. an outer cylinder; 16. an inner barrel; 17. a check valve tube; 18. an intake valve pipe; 19. a flat portion; 20. a bevel portion; 21. a lifting part; 22. a through hole; 23. a concave hole.
Detailed Description
The invention is described in detail below with reference to the figures and examples.
Example (b):
the CPP book cover formula comprises polypropylene, linear low-density polyethylene resin, an antistatic agent and an opening agent, wherein the proportion of the polypropylene, the linear low-density polyethylene resin, the antistatic agent and the opening agent is 71.17%, 28.47%, 0.18% and 0.18%.
The preparation process of the CPP book cover comprises the following steps,
preparing materials, namely weighing the polypropylene, the linear low-density polyethylene resin, the antistatic agent and the opening agent according to the proportion, and keeping the proportions of the polypropylene, the linear low-density polyethylene resin, the antistatic agent and the opening agent at 71.17%, 28.47%, 0.18% and 0.18% after weighing, so that the obtained CPP book cover can keep the optimal proportion and has a good antistatic effect.
And step two, putting the polypropylene into a kettle body 2 of the stirrer, and shaking the polypropylene up and down in the vertical direction and in the horizontal direction through the kettle body 2, wherein the two shaking modes are carried out alternately at random.
And step three, sequentially adding linear low-density polyethylene resin, an antistatic agent and an opening agent at intervals in the kettle body 2 in the polypropylene shaking process, and maintaining the shaking time for 10-15 min.
As shown in figure 1, the stirrer comprises a kettle body 2 and support frames 1 arranged on two sides of the kettle body, wherein a driving device is arranged in each support frame 1, and the driving device is used for driving the kettle body 2 to move in the height direction relative to the support frames 1 and also to rotate back and forth relative to the horizontal axis between the support frames 1 on two sides.
As shown in fig. 2-5, one side of the support frame 1 facing each other is provided with a chute 5 vertically arranged, the support frame 1 is provided with a groove 11 communicated with the upper end of the chute 5, the driving device comprises a servo motor 12 fixedly connected in the groove 11, an air cylinder 9 fixedly connected at the bottom end of the chute 5, a push rod 10 fixedly connected at the telescopic end of the air cylinder 9, a bearing seat 7 fixedly connected at one end of the push rod 10 far away from the air cylinder 9 and a rotating shaft 6 fixedly connected at the inner ring of the bearing seat 7, the rotating shaft 6 is fixedly connected with the kettle body 2, one end of the rotating shaft 6 far away from the kettle body 2 is provided with an elastic friction assembly, as shown in fig. 6, the elastic friction assembly comprises a plurality of friction plates 14 annularly distributed in an array by taking the central axis of the rotating shaft 6 as a reference, as shown in fig. 9, each friction plate 14 comprises a flat portion 19, an inclined portion 20 fixedly connected at one end of the flat portion and a lifting portion 21 fixedly connected at one end of the inclined portion 20 far away from the flat portion 19, the lifting part 21 and one end of the rotating shaft 6, which is far away from the kettle body 2, are spaced, the friction plate 14 has elastic deformation performance, the roughness of the friction plate 14 and the roughness of the friction plate 14 are 1.6-3.2 mu m, a concave hole 23 is formed in the flat part 19, a through hole 22 which is coaxially arranged is formed in the bottom surface of the concave hole 23, and a bolt which penetrates through the through hole 22 and is in threaded connection with the rotating shaft 6 is arranged in the concave hole 23.
As shown in fig. 7 and 8, the kettle body 2 includes an outer cylinder 15 and an inner cylinder 16 arranged therein, the inner cylinder 16 is fixedly connected with the outer cylinder 15 through a plurality of connecting blocks, a cavity is formed between the outer cylinder 15 and the inner cylinder 16, the outer cylinder 15 is provided with an air inlet hole and an air outlet hole communicated with the cavity, the air inlet hole is communicated with an air inlet valve through an air inlet valve pipe 18, the air outlet hole is communicated with a check valve through a check valve pipe 17, a central controller is fixedly connected with the support frame 1, the central controller is coupled with the cylinder 9, the servo motor 12, the check valve and the air inlet valve, and the central controller is an STM32 series single chip microcomputer.
The two ends of the inner cylinder 16 are communicated with a feeding pipe 3 and a discharging pipe 4 which penetrate through the outer cylinder 15, and the feeding pipe 3 and the discharging pipe 4 are communicated with electromagnetic valves.
When polypropylene enters the kettle body 2, firstly, only the air pump needs to pump the polypropylene into the feeding pipe 3, then the polypropylene directly enters the inner barrel 16, and the electromagnetic valves on the feeding pipe 3 and the discharging pipe 4 are closed.
When carrying out reciprocating motion at 1 direction of height of the relative support frame of the cauldron body 2, only need make its flexible end drive push rod 10 stimulate bearing frame 7 through cylinder 9, make bearing frame 7 drive pivot 6 drive cauldron body 2 and take place reciprocating displacement from top to bottom, and at the in-process of displacement, the outside cover of push rod 10 is equipped with spring 8, bearing frame 7 can cushion through spring 8 when following the decline of push rod 10, avoid it to take place the rigidity collision with cylinder 9 and damage, when cylinder 9 drives push rod 10 and makes cauldron body 2 carry out reciprocating motion from top to bottom simultaneously, its maximum process makes the unable friction disk 13 that contacts of elastic friction subassembly, it receives the hindrance to avoid reciprocating motion from top to bottom.
When the horizontal axis between the support frames 1 on the two opposite sides of the kettle body 2 rotates in a reciprocating way, the bearing seat 7 is pushed to the top end of the sliding chute 5 only by the cylinder 9 through the push rod 10, so that the friction plate 14 in the elastic friction assembly can be elastically deformed, the inclined portion 20 can be elastically deformed, the flat portion 19, the inclined portion 20 and the lifting portion can be abutted against the friction plate 13, so that the roughness of the two is large to improve the transmission ratio of the friction discs 13 and the rotating shaft 6, and then, the servo motor 12 drives the friction disc 13 to rotate, the friction disc 13 drives the rotating shaft 6 to rotate through the elastic friction component, the rotating shaft 6 rotates and fixes the bearing seat 7 to rotate, and drives the kettle body 2 to rotate, and the servo motor 12 controls the rotation direction of the friction disc 13 to rotate in a reciprocating manner, so that the kettle body 2 rotates in a reciprocating manner, and polypropylene in the kettle body is shaken.
When the kettle body 2 does any one of the two movements, the electromagnetic valve of the feeding pipe 3 is opened, the linear low-density polyethylene resin is pumped into the kettle body 2 by the air pump, then the electromagnetic valve on the feeding pipe 3 is closed, the two movements are continued, and the two movements are randomly replaced.
After a period of time, the solenoid valve of the feeding pipe 3 is opened again, and the antistatic agent is sucked into the kettle body 2 by the air pump, and then the solenoid valve on the feeding pipe 3 is closed again, and two movements are continued and are randomly replaced.
Finally, after a period of time, the electromagnetic valve of the feeding pipe 3 is opened, the opening agent is pumped into the kettle body 2 through the air pump, then the electromagnetic valve on the feeding pipe 3 is closed, two movements are continued, and the two movements are randomly replaced.
After shaking for a period of time, the central controller controls the air cylinder 9 and the servo motor 12 to stop working, and finally, the electromagnetic valve on the discharge pipe 4 is opened to lead out all the raw materials which are uniformly stirred.
And in the shaking process, in order to avoid the noise generated by the collision of the kettle body 2 and the raw materials, the air inlet valve is closed, and the air in the cavity is pumped away through the one-way valve, so that the vacuum state is kept in the cavity, and the penetration of the noise is reduced.
And step four, pouring, namely pouring the materials fully stirred in the stirrer kettle body 2 into the CPP tape casting machine.
And step five, heating through a CPP casting machine and starting film blowing.
And step six, flashing, and cutting the film as required.
And step seven, rolling and storing.
The CPP book cover obtained through the steps has relatively even texture, the structural strength of the CPP book cover is guaranteed, the raw materials do not need to be stirred again in the heating and melting process, and the efficiency of the whole process can be improved.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and adaptations to those skilled in the art without departing from the principles of the present invention should also be considered as within the scope of the present invention.
Claims (10)
1. A CPP book cover formula is characterized in that: including polypropylene, linear low density polyethylene resin, antistatic agents, and opening agents.
2. The CPP book cover formulation of claim 1, wherein: the proportions of the polypropylene, the linear low-density polyethylene resin, the antistatic agent and the opening agent are 65-75%, 25-30%, 0-1% and 0-1%.
3. The CPP book cover formulation of claim 2, wherein: the proportions of the polypropylene, the linear low-density polyethylene resin, the antistatic agent and the opening agent are 69-72%, 27-30%, 0-0.4% and 0-0.4%.
4. A preparation process of a CPP book cover is characterized by comprising the following steps: comprises the following steps of (a) carrying out,
preparing materials, namely weighing polypropylene, linear low-density polyethylene resin, an antistatic agent and an opening agent according to a ratio;
step two, putting the polypropylene into a kettle body (2) of a stirrer, and shaking the polypropylene up and down in the vertical direction and in the horizontal direction through the kettle body (2), wherein the two shaking modes are performed alternately at random;
step three, adding linear low-density polyethylene resin, an antistatic agent and a tapping agent into the kettle body (2) at intervals in sequence in the polypropylene shaking process, and keeping the shaking time for 10-15 min;
pouring, namely pouring the material fully stirred in the stirrer kettle body (2) into the CPP tape casting machine;
step five, heating through a CPP casting machine and starting film blowing;
step six, flashing, cutting the film as required;
and step seven, rolling and storing.
5. The CPP book cover preparation process according to claim 4, characterized in that: the mixer includes the cauldron body (2) and sets up support frame (1) in its both sides, be provided with drive arrangement in support frame (1), drive arrangement is used for driving the cauldron body (2) and can moves the horizontal axis between the relative both sides support frame (1) of relative support frame (1) direction of height relatively and take place reciprocating rotation.
6. The CPP book cover preparation process according to claim 5, characterized in that: spout (5) of vertical setting are seted up to one side that support frame (1) was moved towards each other, recess (11) with spout (5) upper end intercommunication have been seted up in support frame (1), drive arrangement includes servo motor (12), fixed connection in recess (11) cylinder (9), fixed connection in spout (5) bottom push rod (10), the pivot (6) of fixed connection at bearing frame (7) inner circle that cylinder (9) one end was kept away from in push rod (10) to fixed connection in cylinder (9) flexible end, pivot (6) and cauldron body (2) fixed connection, the one end that cauldron body (2) were kept away from in pivot (6) is provided with elastic friction subassembly.
7. The CPP book cover preparation process according to claim 6, characterized in that: the elastic friction assembly comprises a plurality of friction plates (14) which are distributed in an annular array mode by taking the central axis of the rotating shaft (6) as a reference, each friction plate (14) comprises a flat part (19), an inclined part (20) fixedly connected to one end of each friction plate (14) and a lifting part (21) fixedly connected to one end, far away from the flat part (19), of each inclined part (20), a distance exists between each lifting part (21) and one end, far away from the kettle body (2), of the rotating shaft (6), each friction plate (14) has elastic deformation performance, and the roughness of each friction plate (14) are 1.6-3.2 mu m.
8. The CPP book cover preparation process according to claim 6, characterized in that: the cauldron body (2) include urceolus (15) and set up inner tube (16) wherein, through a plurality of connecting block fixed connection between inner tube (16) and urceolus (15), just vacuole formation between urceolus (15) and inner tube (16), set up inlet port and venthole with the cavity intercommunication on urceolus (15), the inlet port has the admission valve through admission valve pipe (18) intercommunication, the venthole has the check valve through check valve pipe (17) intercommunication.
9. The CPP book cover preparation process of claim 8, characterized in that: fixedly connected with central controller on support frame (1), central controller is coupled with cylinder (9), servo motor (12), check valve and admission valve.
10. The CPP book cover preparation process of claim 8, characterized in that: the two ends of the inner cylinder (16) are communicated with a feeding pipe (3) and a discharging pipe (4) which penetrate through the outer cylinder (15).
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| CN202210250178.6A CN114539670A (en) | 2022-03-15 | 2022-03-15 | CPP book cover formula and preparation process thereof |
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Application publication date: 20220527 |