CN111171442A - Formula and process of recyclable BOOP protective film - Google Patents
Formula and process of recyclable BOOP protective film Download PDFInfo
- Publication number
- CN111171442A CN111171442A CN201911364421.1A CN201911364421A CN111171442A CN 111171442 A CN111171442 A CN 111171442A CN 201911364421 A CN201911364421 A CN 201911364421A CN 111171442 A CN111171442 A CN 111171442A
- Authority
- CN
- China
- Prior art keywords
- stretching
- boop
- parts
- top side
- output
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
-
- 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
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
- B29C35/04—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam
- B29C35/045—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam using gas or flames
-
- 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
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
- B29C35/04—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam
- B29C35/06—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam for articles of indefinite length
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0018—Combinations of extrusion moulding with other shaping operations combined with shaping by orienting, stretching or shrinking, e.g. film blowing
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/07—Flat, e.g. panels
- B29C48/08—Flat, e.g. panels flexible, e.g. films
-
- 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
- B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
- B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
- B29C55/10—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial
- B29C55/12—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial
- B29C55/14—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial successively
- B29C55/143—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial successively firstly parallel to the direction of feed and then transversely thereto
-
- 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
- C08J2403/00—Characterised by the use of starch, amylose or amylopectin or of their derivatives or degradation products
- C08J2403/02—Starch; Degradation products thereof, e.g. dextrin
-
- 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
- C08J2423/10—Homopolymers or copolymers of propene
- C08J2423/14—Copolymers of propene
-
- 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
- C08J2465/00—Characterised by the use of macromolecular compounds obtained by reactions forming a carbon-to-carbon link in the main chain; Derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/10—Esters; Ether-esters
- C08K5/101—Esters; Ether-esters of monocarboxylic acids
- C08K5/105—Esters; Ether-esters of monocarboxylic acids with phenols
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Thermal Sciences (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Polymers & Plastics (AREA)
- Medicinal Chemistry (AREA)
- Materials Engineering (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Abstract
The invention discloses a formula and a process for a recyclable BOOP protective film, which relate to the technical field of BOOP protective films and comprise polypropylene homopolymerization, copolymerization resin, corn starch homogeneous liquid and a mixing agent, wherein the formula comprises the following components in percentage by weight: 80-85 parts of polypropylene homopolymerization, 5-10 parts of copolymer resin, 5-10 parts of corn starch homogeneous liquid and 3-5 parts of mixing agent, the copolymer resin and the corn starch homogeneous liquid are added into the polypropylene homopolymerization, the degradability of BOOP can be improved, the BOOP is convenient to degrade after recovery, the BOOP is convenient to reprocess and utilize, when the BOOP is stretched, the driving motor works to drive the driving gear to rotate, the first limiting plate moves under the cooperation of the toothed belt, the scraper plate ensures that the bottom side of the scraper plate and the top side of the film slide in a contact manner under the cooperation of the extrusion spring, meanwhile, the air is supplied to the fan to work, the electric heating wire is electrified and heated, hot air is discharged through the spray head, the uniform paving of the film is realized, the uniform stretching of the film in the stretching process is ensured.
Description
Technical Field
The invention relates to the technical field of BOOP (biaxially-oriented polyester) protective films, in particular to a formula and a process of a recyclable BOOP protective film.
Background
BOOP is usually an economic film, and is prepared by co-extruding polypropylene particles to form a sheet and then stretching the sheet in the longitudinal direction and the transverse direction; the existing BOOP protective film has poor degradability, is generally a disposable product, has low recovery rate, is easy to cause uneven stretching stress when being stressed and stretched during production, and has poor product quality; in view of these drawbacks, it is necessary to design a formula and a process for forming a recyclable BOOP protective film.
Disclosure of Invention
The invention aims to provide a formula and a process for a recyclable BOOP (biaxially oriented Polypropylene) protective film, and solves the technical problems of low recycling rate, uneven stretching stress easily caused by stress stretching during production and poor quality of BOOP protective film products.
The purpose of the invention can be realized by the following technical scheme:
a formula of a recyclable BOOP protective film comprises polypropylene homopolymerization, copolymerization resin, corn starch homogeneous liquid and a mixing agent, and the formula comprises the following components in percentage by weight: 80-85 parts of polypropylene homopolymerization, 5-10 parts of copolymer resin, 5-10 parts of corn starch homogeneous liquid and 3-5 parts of mixing agent.
As a further scheme of the invention: the preparation method of the recyclable BOOP protective film formula sequentially comprises the following steps:
s1, feeding: respectively putting 80-85 parts of polypropylene homopolymerization, 5-10 parts of copolymer resin, 5-10 parts of corn starch homogeneous solution and 3-5 parts of mixing agent into respective corresponding double-screw extruders;
s2, casting sheet production: extruding the cast sheet at 230-250 deg.c, and fast cooling at 10-40 deg.c to crystallize and solidify into thick sheet;
s3, preheating: preheating the cast piece in an oven at 120-145 ℃ for 5-10 min;
s4, stretch forming: stretching in a stretching device, longitudinally stretching at 80-135 ℃, wherein the stretching ratio is 5.0-6.5 times, heat setting at 100-160 ℃, preheating at 140-175 ℃ before transverse stretching, transversely stretching at 130-150 ℃ after preheating, the transverse stretching ratio is 6-10 times, and drawing and rolling at the speed of 90-300 m/min;
s5, cooling: placing the film formed by stretching in the step S4 on a cooling roller for cooling to obtain a PET protective film;
s6, edge cutting and coiling: and cutting off the two waste edges of the protective film obtained in the step S6 through an edge cutting device, and coiling and packaging.
As a further scheme of the invention: the mixture comprises a photosensitizer and an antistatic agent, wherein the ratio of the photosensitizer to the antistatic agent is 1: 1, the photosensitizer is acetyl salicyl iron, and the antistatic agent is polythiophene phenols.
As a further scheme of the invention: the stretching device in the step S4 includes a support plate, a support frame, an air inlet fan, an electric heating tube, heating wires, a spreading structure and a stretching structure, the stretching structure is arranged on the top side of the support plate, the support frame is arranged right above the top side of the support plate, the spreading structure is arranged on the top side of the support frame, the electric heating tube is fixed at one end of the bottom side of a cross beam of the support frame by welding, three groups of heating wires are erected inside the electric heating tube, the air inlet fan is arranged at one end port of the electric heating tube, the spreading structure includes a driving gear, a driving motor, a toothed belt, a limit rod, an extrusion spring, a movable tube, a scraper, a spray head, a first limit plate and a second limit plate, a rod groove is formed inside the cross beam of the support frame, the first limit plate and the second limit plate are respectively arranged on the upper side and the lower side of the, the sliding rod output penetrates through the rod groove, the driving motor is installed on the top side of the second limiting plate through bolts, the driving gear is installed at the output end portion of the driving motor, the toothed belt is arranged on the top side of the cross beam of the supporting frame, the limiting rod is vertically fixed on the bottom side of the first limiting plate, the bottom end of the limiting rod is matched and inserted into the movable barrel, an extrusion spring is arranged between the end face of the bottom end of the limiting rod and the barrel wall of the movable barrel, the scraper is fixed at the end portion of the bottom end of the movable barrel, and the sprayer is fixed at the bottom side of the first limiting plate.
As a further scheme of the invention: the stretching structure comprises a stretching beam, a positioning plate, a chute, a screw rod, a slide block, an extrusion plate, a spring clamp, an output box, an output motor, an output bevel gear and a matching bevel gear, the top side of the supporting plate is provided with a sliding groove with an upward opening, the sliding block is arranged inside the sliding groove, the stretching beam is vertically fixed on the top side of the sliding block, the output box is fixed in the middle of the top side of the supporting plate, the output motor is arranged on one side of the output box through a bolt, the output bevel gear is arranged on the action end part of the output motor, the two sides of the output bevel gear are correspondingly provided with matching bevel gears, the positioning plate is fixed at the end part of one end of the top side of the supporting plate, the two ends of the screw rod are respectively installed in a bearing seat inside the positioning plate and a side wall bearing seat of the output box, and the matching bevel gear is installed at the end part of one end of the screw rod.
As a further scheme of the invention: the driving gear is located right above the toothed belt, and the driving gear and the toothed belt are of a meshed structure.
As a further scheme of the invention: the screw rod penetrates through the bottom of the stretching beam in a matched mode through a bolt, and the output bevel gear and the matched bevel gear are of a meshed structure.
As a further scheme of the invention: the extrusion plate is fixed on one side of the top of the stretching beam through welding, and the extrusion plate is fixedly connected with a spring clamp.
The invention has the beneficial effects that:
1. by adding the copolymer resin and the corn starch homogeneous liquid into the polypropylene homopolymerization, the degradability of BOOP can be improved, and the BOOP is convenient to degrade after being recovered and reprocess and utilize;
2. in the preparation step, through the structure of spreading out flatly, when tensile, the initiative motor operation drives the driving gear rotatory, under the cooperation of cingulum, realizes the removal of first limiting plate, and the scraper blade guarantees that the bottom side of scraper blade and film top side contact slide under the cooperation of extrusion spring, admits air fan operation simultaneously, heating wire ohmic heating, and hot-air passes through the shower nozzle and discharges, realizes evenly spreading to the film, guarantees that the film evenly stretches at tensile in-process, reaches better tensile effect.
Drawings
In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is an elevational view of the overall construction of the present invention;
FIG. 3 is a schematic view of the overall structure of the present invention;
in the figure: 1. a support plate; 2. a support frame; 3. an air inlet fan; 4. an electric heating cylinder; 5. an electric heating wire; 6. flattening the structure; 7. stretching the structure; 61. a driving gear; 62. an active motor; 63. a toothed belt; 64. a limiting rod; 65. a compression spring; 66. a movable barrel; 67. a squeegee; 68. a spray head; 69. a first limit plate; 610. a second limiting plate; 71. stretching the beam; 72. positioning a plate; 73. a chute; 74. a screw rod; 75. a slider; 76. a pressing plate; 77. a spring clip; 78. outputting the box; 79. an output motor; 710. an output bevel gear; 711. and a conical gear is matched.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1-3, a formula of a recyclable BOOP protective film comprises polypropylene homopolymerization, copolymerization resin, corn starch homogeneous liquid and a mixing agent, and the formula comprises the following components in percentage by weight: 80-85 parts of polypropylene homopolymerization, 5-10 parts of copolymer resin, 5-10 parts of corn starch homogeneous liquid and 3-5 parts of mixing agent;
the process for preparing the recyclable BOOP protective film formula sequentially comprises the following steps:
s1, feeding: respectively putting 80-85 parts of polypropylene homopolymerization, 5-10 parts of copolymer resin, 5-10 parts of corn starch homogeneous solution and 3-5 parts of mixing agent into respective corresponding double-screw extruders;
s2, casting sheet production: extruding the cast sheet at 230-250 deg.c, and fast cooling at 10-40 deg.c to crystallize and solidify into thick sheet;
s3, preheating: preheating the cast piece in an oven at 120-145 ℃ for 5-10 min;
s4, stretch forming: stretching in a stretching device, longitudinally stretching at 80-135 ℃, wherein the stretching ratio is 5.0-6.5 times, heat setting at 100-160 ℃, preheating at 140-175 ℃ before transverse stretching, transversely stretching at 130-150 ℃ after preheating, the transverse stretching ratio is 6-10 times, and drawing and rolling at the speed of 90-300 m/min;
s5, cooling: placing the film formed by stretching in the step S4 on a cooling roller for cooling to obtain a PET protective film;
s6, edge cutting and coiling: cutting off the waste edges at two sides of the protective film obtained in the step S6 through an edge cutting device, and coiling and packaging;
the mixing agent comprises a photosensitizer and an antistatic agent, wherein the ratio of the photosensitizer to the antistatic agent is 1: 1, the photosensitizer is acetyl salicyl iron, and the antistatic agent is polythiophene phenols.
Wherein, the stretching device in step S4 includes a supporting plate 1, a supporting frame 2, an air inlet fan 3, an electric heating cylinder 4, heating wires 5, a spreading structure 6 and a stretching structure 7, the stretching structure 7 is disposed on the top side of the supporting plate 1, the supporting frame 2 is disposed right above the top side of the supporting plate 1, the spreading structure 6 is disposed on the top side of the supporting frame 2, the electric heating cylinder 4 is fixed on one end of the bottom side of the beam of the supporting frame 2 by welding, three groups of heating wires 5 are erected inside the electric heating cylinder 4, the air inlet fan 3 is mounted at one end port of the electric heating cylinder 4, the spreading structure 6 includes a driving gear 61, a driving motor 62, a toothed belt 63, a limiting rod 64, an extrusion spring 65, a movable cylinder 66, a scraper 67, a nozzle 68, a first limiting plate 69 and a second limiting plate 610, a rod groove is disposed inside the beam of the supporting frame 2, the first limiting plate 69, the first limiting plate 69 is connected with the second limiting plate 610 through a sliding rod, the output of the sliding rod penetrates through a rod groove, the driving motor 62 is installed on the top side of the second limiting plate 610 through a bolt, the driving gear 61 is installed at the output end of the driving motor 62, the toothed belt 63 is arranged on the top side of the cross beam of the support frame 2, the limiting rod 64 is vertically fixed on the bottom side of the first limiting plate 69, the bottom end of the limiting rod 64 is matched and inserted inside the movable barrel 66, an extrusion spring 65 is arranged between the end face of the bottom end of the limiting rod 64 and the barrel wall of the movable barrel 66, the scraper 67 is fixed at the end of the bottom end of the movable barrel 66, and the;
wherein, the stretching structure 7 comprises a stretching beam 71, a positioning plate 72, a sliding chute 73, a screw rod 74 and a slide block 75, the automatic feeding device comprises a squeezing plate 76, a spring clamp 77, an output box 78, an output motor 79, an output bevel gear 710 and a matching bevel gear 711, wherein a sliding groove 73 with an upward opening is formed in the top side of a supporting plate 1, a sliding block 75 is arranged inside the sliding groove 73, a stretching beam 71 is vertically fixed on the top side of the sliding block 75, the output box 78 is fixed at the middle position of the top side of the supporting plate 1, the output motor 79 is installed on one side of the output box 78 through bolts, the output bevel gear 710 is installed at the action end part of the output motor 79, matching bevel gears 711 are correspondingly arranged on two sides of the output bevel gear 710, a positioning plate 72 is fixed at one end part of the top side of the supporting plate 1, two ends of a screw rod 74 are respectively installed in a bearing seat inside the positioning plate;
the driving gear 61 is positioned right above the toothed belt 63, and the driving gear 61 and the toothed belt 63 are of a meshed structure;
the screw rod 74 penetrates through the bottom of the stretching beam 71 in a matched mode through a bolt, and the output bevel gear 710 and the matched bevel gear 711 are of a meshed structure;
the pressing plate 76 is fixed to one side of the top of the stretching beam 71 by welding, and the spring clip 77 is fixed to the pressing plate 76.
The working principle of the invention is as follows: by adding copolymer resin and corn starch homogeneous liquid into polypropylene homopolymerization, the degradability of BOOP can be improved, the BOOP is convenient to degrade after recovery and is convenient to reprocess and utilize, when a film is stretched, two sides of a cast sheet are respectively clamped on the extrusion plates 76 on the corresponding surfaces of the two stretching beams 71 under the coordination of the spring clamps 77, then the operation of the output motor 79 is used for driving the output bevel gear 710 to rotate, the rotation of the screw rod 74 is realized under the coordination of the bevel gear 711, the simultaneous stretching operation of the stretching beams 71 on two sides is realized under the sliding coordination of the slide block 75 along the slide groove 73, the stretching operation of the cast sheet is realized, when the stretching is carried out, the driving motor 62 is used for driving the driving gear 61 to rotate, the movement of the first limit plate 69 is realized under the coordination of the toothed belt 63, the contact sliding of the bottom side of the scraper 67 and the top side of the film is ensured under the coordination of the extrusion spring 65, meanwhile, the air inlet fan 3 works, the electric heating wire 5 is electrified for heating, and hot air is discharged through the spray head 68, so that the film is uniformly paved, the film is ensured to be uniformly stretched in the stretching process, and a better stretching effect is achieved.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (8)
1. The formula of the recyclable BOOP protective film is characterized by comprising polypropylene homopolymerization, copolymerization resin, corn starch homogeneous liquid and a mixing agent, wherein the formula comprises the following components in percentage by weight: 80-85 parts of polypropylene homopolymerization, 5-10 parts of copolymer resin, 5-10 parts of corn starch homogeneous liquid and 3-5 parts of mixing agent.
2. The process for preparing a recyclable BOOP protective film formulation as claimed in claim 1, wherein the preparation steps are as follows in sequence:
s1, feeding: respectively putting 80-85 parts of polypropylene homopolymerization, 5-10 parts of copolymer resin, 5-10 parts of corn starch homogeneous solution and 3-5 parts of mixing agent into respective corresponding double-screw extruders;
s2, casting sheet production: extruding the cast sheet at 230-250 deg.c, and fast cooling at 10-40 deg.c to crystallize and solidify into thick sheet;
s3, preheating: preheating the cast piece in an oven at 120-145 ℃ for 5-10 min;
s4, stretch forming: stretching in a stretching device, longitudinally stretching at 80-135 ℃, wherein the stretching ratio is 5.0-6.5 times, heat setting at 100-160 ℃, preheating at 140-175 ℃ before transverse stretching, transversely stretching at 130-150 ℃ after preheating, the transverse stretching ratio is 6-10 times, and drawing and rolling at the speed of 90-300 m/min;
s5, cooling: placing the film formed by stretching in the step S4 on a cooling roller for cooling to obtain a PET protective film;
s6, edge cutting and coiling: and cutting off the two waste edges of the protective film obtained in the step S6 through an edge cutting device, and coiling and packaging.
3. The process for preparing a recyclable BOOP protective film formulation as described in claim 1, wherein the mixture comprises a photosensitizer and an antistatic agent, and the ratio of the photosensitizer to the antistatic agent is 1: 1, the photosensitizer is acetyl salicyl iron, and the antistatic agent is polythiophene phenols.
4. The process of claim 2, wherein the stretching device in step S4 comprises a supporting board (1), a supporting board (2), an air inlet fan (3), an electric heating cylinder (4), heating wires (5), a spreading structure (6) and a stretching structure (7), the stretching structure (7) is disposed on the top side of the supporting board (1), the supporting board (2) is installed right above the top side of the supporting board (1), the spreading structure (6) is disposed on the top side of the supporting board (2), the electric heating cylinder (4) is fixed at one end of the bottom side of the cross beam of the supporting board (2) by welding, three groups of heating wires (5) are erected inside the electric heating cylinder (4), the air inlet fan (3) is installed at one end port of the electric heating cylinder (4), and the spreading structure (6) comprises a driving gear (61), The device comprises a driving motor (62), a toothed belt (63), a limiting rod (64), an extrusion spring (65), a movable barrel (66), a scraper (67), a spray head (68), a first limiting plate (69) and a second limiting plate (610), wherein a rod groove is formed in the beam of the support frame (2), the first limiting plate (69) and the second limiting plate (610) are respectively arranged on the upper side and the lower side of the beam of the support frame (2), the first limiting plate (69) is connected with the second limiting plate (610) through a sliding rod, the output of the sliding rod penetrates through the rod groove, the driving motor (62) is arranged on the top side of the second limiting plate (610) through bolts, the driving gear (61) is arranged at the output end part of the driving motor (62), the toothed belt (63) is arranged on the top side of the beam of the support frame (2), the limiting rod (64) is vertically fixed on the bottom side of the first limiting plate, the bottom end of the limiting rod (64) is matched and inserted into the movable barrel (66), an extrusion spring (65) is arranged between the end face of the bottom end of the limiting rod (64) and the barrel wall of the movable barrel (66), the scraper (67) is fixed at the end part of the bottom end of the movable barrel (66), and the spray head (68) is fixed at the bottom side of the first limiting plate (69).
5. The process for preparing a recyclable BOOP protective film formula according to claim 4, wherein the stretching structure (7) comprises a stretching beam (71), a positioning plate (72), a sliding groove (73), a screw rod (74), a sliding block (75), a pressing plate (76), a spring clamp (77), an output box (78), an output motor (79), an output bevel gear (710) and a matching bevel gear (711), the top side of the supporting plate (1) is provided with the sliding groove (73) with an upward opening, the sliding block (75) is arranged inside the sliding groove (73), the stretching beam (71) is vertically fixed on the top side of the sliding block (75), the output box (78) is fixed at the middle position of the top side of the supporting plate (1), the output motor (79) is installed at one side of the output box (78) through bolts, and the output bevel gear (710) is installed at the acting end of the output motor (79), the two sides of the output bevel gear (710) are correspondingly provided with matching bevel gears (711), the positioning plate (72) is fixed at one end of the top side of the supporting plate (1), two ends of the screw rod (74) are respectively installed in a bearing seat inside the positioning plate (72) and a side wall bearing seat of the output box (78), and the matching bevel gears (711) are installed at one end of the screw rod (74).
6. The process of claim 4, wherein the driving gear (61) is located directly above the toothed belt (63), and the driving gear (61) and the toothed belt (63) are engaged with each other.
7. The process of claim 5, wherein the lead screw (74) is screwed through the bottom of the stretching beam (71), and the output bevel gear (710) and the mating bevel gear (711) are engaged with each other.
8. The process for forming a recycled BOOP protective film formulation according to claim 5, wherein the squeeze plate (76) is fixed on the top side of the tensile beam (71) by welding, and the spring clip (77) is fixed on the squeeze plate (76).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911364421.1A CN111171442A (en) | 2019-12-26 | 2019-12-26 | Formula and process of recyclable BOOP protective film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911364421.1A CN111171442A (en) | 2019-12-26 | 2019-12-26 | Formula and process of recyclable BOOP protective film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111171442A true CN111171442A (en) | 2020-05-19 |
Family
ID=70622343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911364421.1A Pending CN111171442A (en) | 2019-12-26 | 2019-12-26 | Formula and process of recyclable BOOP protective film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111171442A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1333123A (en) * | 2000-07-11 | 2002-01-30 | 湛江包装材料企业有限公司 | Method for making optical degrated biaxial stretching polypropylene film |
| CN106279963A (en) * | 2015-05-15 | 2017-01-04 | 中山市振鸿包装科技有限公司 | A kind of bio-based thin film and production method thereof |
| CN209148436U (en) * | 2018-11-16 | 2019-07-23 | 中国科学技术大学 | Two-way stretch device |
-
2019
- 2019-12-26 CN CN201911364421.1A patent/CN111171442A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1333123A (en) * | 2000-07-11 | 2002-01-30 | 湛江包装材料企业有限公司 | Method for making optical degrated biaxial stretching polypropylene film |
| CN106279963A (en) * | 2015-05-15 | 2017-01-04 | 中山市振鸿包装科技有限公司 | A kind of bio-based thin film and production method thereof |
| CN209148436U (en) * | 2018-11-16 | 2019-07-23 | 中国科学技术大学 | Two-way stretch device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113752510B (en) | Production process and intelligent production equipment of PLA degradable functional film | |
| CN109846122B (en) | Wig spreading machine | |
| CN107088999A (en) | TPU and ABS composite board equipment | |
| CN109466066A (en) | A kind of full-automatic rolling composite molding machine in the two-sided composite material of plastics plate | |
| CN104002469B (en) | Hot melt pressing edge banding apparatus in plastic box bending forming machine | |
| CN111171442A (en) | Formula and process of recyclable BOOP protective film | |
| CN212498897U (en) | Shaping and cooling device for extrusion molding plastic | |
| CN116713153A (en) | Combined type production line of waveform beam steel guardrail for highway | |
| CN114438297B (en) | Online water-cooling quenching device for aluminum profile and aluminum profile production line | |
| CN215790991U (en) | Open mill | |
| CN211709759U (en) | Open rubber mixing mill that can adjust temperature fast | |
| CN215703850U (en) | Injection molding device | |
| CN107932874A (en) | A kind of extrusion moulding apparatus of large scale wood-plastic composite panel | |
| CN110560965B (en) | Production line is used in tin silk production | |
| CN210453412U (en) | Sheet pulling machine | |
| CH642906A5 (en) | METHOD AND DEVICE FOR PRODUCING MOLDED BODIES FROM HIGH-MOLECULAR LOW-PRESSURE POLYAETHYLENE, AND A RAMEXTRUDER FOR IMPLEMENTING THE METHOD. | |
| CN116352948B (en) | Extrusion extension type plastic product forming device and application method thereof | |
| CN206938001U (en) | A kind of continous way splices machine | |
| DE2363117C3 (en) | Use of thermoplastic tubular films as loading goods for calenders | |
| CN216025949U (en) | Fire-retardant shading forming equipment for TPU membrane | |
| DE102013015306A1 (en) | Multichannel corrugator for the production of flexible corrugated pipes, with modular construction and with parallel arranged and with at least three horizontally adjacent molding channels. | |
| CN212385946U (en) | Multilayer plastic solid plate extruder | |
| CN210062006U (en) | Profiling device for plastic product production | |
| CN205255355U (en) | V of optimal design takes spray painting heat sink of vulcanizer | |
| DE1965458C3 (en) | Apparatus for the continuous production of a polymer sheet from a liquid monomer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200519 |