CN105365190A - Propene polymer (PP) raw material plate machining process - Google Patents
Propene polymer (PP) raw material plate machining process Download PDFInfo
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- CN105365190A CN105365190A CN201510786230.XA CN201510786230A CN105365190A CN 105365190 A CN105365190 A CN 105365190A CN 201510786230 A CN201510786230 A CN 201510786230A CN 105365190 A CN105365190 A CN 105365190A
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- 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
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
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- 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
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
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- 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
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
- B29C48/305—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a propene polymer (PP) raw material plate machining process. The machining process comprises the steps that materials are fed; a single screw extruder is used, and an extrusion material cylinder is divided into four areas to conduct heating; water contained in the PP raw materials is evaporated and discharged in time through a gas exhaust outlet formed in the material cylinder; a plate is molded and formed in a extrusion-in mold; certain pressure is formed for the molten PP raw materials; a part of the plate of a required length is cut and put on a specific material stocking frame; heat treatment is conducted; and chamfering edge treatment is conducted. According to the PP plate produced through the machining process, the condition that the color of the surface is dim is significantly improved, and holes or bubbles or blemishes inside the plate are greatly reduced, so that various properties of the plate are improved by a large margin. Due to the fact that traction/brake processes are used simultaneously to replace a traditional brake process, the condition of frequent decentration of the plate at the outlet of the mold is eliminated, and the thickness of the plate is ensured. The working processes of repeat manual adjustment for braking are reduced, so that the work efficiency is improved.
Description
Technical field
The invention belongs to macromolecule sheet material technical field, be specifically related to a kind of PP material plate.
Background technology
The technological process of production that current domestic PP board assembly line generally adopts is: main frame one mould one three-roller calendar one slow cooling frame one hauling machine one trimming one crosscut one conveyer belt one lift.
The patent of invention being 01136876.4 as Chinese Patent Application No. discloses a kind of manufacture method with the polypropylene board of high strength, and its procedure of processing comprises: A, batch mixing is inserted barrel; B, enter heating extruder in heat melt; C, enter shaping hollow polypropylene plate molding machine in be shaped; D, enter one again and there is head and can the cooling calibrator of left and right displacement, and be processed to form the polypropylene board of the center pillar of a non-linear; E, be cut into finished product with guillotine; By above-mentioned manufacture method, utilize this cooling calibrator, make polypropylene board form the centre-pillar structure of the non-linear of displacement, and make polypropylene board form high-strength polypropylene plate, the intensity of polypropylene board is effectively strengthened.This technical scheme is intended to improve the comparatively fragile shortcoming of the side of caused the in the fabrication process polypropylene board of the existing polypropylene board manufacture method commonly used, and processing procedure can produce the polypropylene board with high strength.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of PP of improvement plate property is provided, reduces production cost, the PP plate processing technology of enhancing productivity and device.
To achieve these goals, the present invention adopts following technical scheme:
A kind of PP plate processing technology, comprising:
Feed intake: ensureing to throw in PP raw material under the state that hopper is not empty;
Extrude: adopt single screw extrusion machine, extrude barrel and divide 4th district to heat;
Exhaust: adopt vented barrel, utilize barrel and feeding spiro rod to carry out heating and melting to PP raw material, is made the water evaporates that contains in PP raw material and is excluded in time by the steam vent that barrel is arranged;
Shaping/sizing: the PP raw material of melting is clamp-oned in mould, shaping, be fixed to sheet material;
Brake/traction: by brake and hauling machine effect under, make the PP raw material of melting formed certain pressure and maintenance straight line be extruded;
Cutting plate/windrow: measure 1230MM length with tape measure, starts lath cutter, cuts out required length, is sling by plate, neatly overlay on specific rickstand with driving;
Heat treatment: heat-treat stacking the sheet material piled;
Bevelling: bevelling process is carried out to each water caltrop of sheet material.
Further, when feeding intake, need feed intake in time, different material can not be used with.
Further, when extruding, adopt single screw extrusion machine, extrusion screw rod speed is 10-15r/min; Extruding barrel divides 4th district to heat, district's feeding section temperature a: 190-200 DEG C, two melting compression section, district temperature: 195-205 DEG C, three district's homogenizing zone temperature: 195-205 DEG C, connector temperature: 185-195 DEG C.
Further, to the mould of PP material forming/sizing be patrix, the forming recess that assembles of middle plate, counterdie, middle plate gating location is 160 degree of fan-shaped subtended angles, and die size is 1600*800;
Mould comprises compression forming district and cooling and shaping district;
Dies compress shaping area is divided into No.12 District to heat, that is: last district temperature: 155-160 DEG C, the first two district's temperature: 155-160 DEG C, first three district's temperature: 148-152 DEG C, front four district's temperature: 135-140 DEG C, the first five district's temperature: 130-135 DEG C, the first six district's temperature: 120-125 DEG C; Rear district's temperature a: 155-160 DEG C, rear two district's temperature: 155-160 DEG C, rear three district's temperature: 148-152 DEG C, rear four district's temperature: 135-140 DEG C, rear five district's temperature: 130-135 DEG C, rear six district's temperature: 120-125 DEG C;
Shaping area: be connected to cold water pipe at mould the right and left, is constantly lowered the temperature to the sheet material after shaping by recirculated water, makes sheet material complete sizing.
Further, in the exit position of mould installing brake mount and brake article, by regulating upper and lower brake article pressing plate elasticity, the PP raw material of melting is made to form certain pressure in compression forming district, make the close structure of extruded product, after brake, hauling machine being housed, by regulating the speed of hauling machine, maintenance constant dimensions at the uniform velocity being advanced.
Further, during cutting plate/windrow, be placed with three stainless square steel between plate and plate, stainless square steel between layers up and down point-blank.
Further, heat-treat stacking the sheet material piled with baking box, heat treatment is mainly divided into 12 sections:
First paragraph warm temperature 40 DEG C, 20 minutes heating-up times;
Second segment thermostat temperature 60 DEG C, constant temperature time 90 minutes;
3rd section of warm temperature 60 DEG C, warm-up time 20 minutes;
4th section of thermostat temperature 80 DEG C, constant temperature time 90 minutes;
5th section of warm temperature 80 DEG C, warm-up time 20 minutes;
6th section of thermostat temperature 100 DEG C, constant temperature time (CM) * 3*60 minute;
7th section of cooling temperature 100 DEG C, temperature fall time 20 minutes;
8th section of thermostat temperature 80 DEG C, constant temperature time 180 minutes;
9th section of cooling temperature 80 DEG C, constant temperature time 20 minutes;
Tenth section of thermostat temperature 60 DEG C, constant temperature time 180 minutes;
11 section of cooling temperature 60 C, temperature fall time 20 minutes;
12 section of thermostat temperature 40 DEG C, constant temperature time 180 minutes.
Another object of the present invention is to provide a kind of PP material plate processing technology process units, this device comprises: barrel screw rod is connected with reduction box, barrel and shell of reduction box are fixed together, barrel screw rod is located in barrel, barrel screw rod is connected with reduction box driven shaft, barrel is provided with Hopper Dryer, and bump joint is equipped with in cartridge outlet position, is linked together by flange pull head and mould.During production, by controlling electric cabinet, barrel and mould are heated, temperature arrives design temperature, starter motor operates, and drive reduction box by belt transmission, reduction box drives barrel screw rod to operate again, raw material in Hopper Dryer enters barrel melting by the running of barrel screw rod and is extruded, clamp-on mould through bump joint, at dies compress, district is compressed into type, be shaped in shaping area rule product and extrusion die; Reduction box provides power by motor.
Owing to have employed such scheme, the PP board product that the present invention produces, the dim situation of its finished surface color is obviously improved, the hole of sheet material inside, steam bubble or acne scar greatly reduce, thus the various aspects of performance of sheet material is significantly improved; Meanwhile, owing to adopting traction technology generations for traditional brake technique, essentially eliminate sheet material and often occur eccentric situation at mould outlet place, and then ensure that the thickness of sheet material, decrease the operation manually repeatedly regulating brake, improve operating efficiency; In addition, the present invention does not need to install powerful drying plant on hopper, saves equipment investment, reduces production cost.
Accompanying drawing explanation
Fig. 1 is the PP plate processing technology flow chart that the embodiment of the present invention provides;
Fig. 2 is the structural representation of the PP plate producing device that the embodiment of the present invention provides.
In figure: 1, motor; 2, reduction box; 3, Hopper Dryer; 4, barrel screw rod; 5, electric cabinet is controlled; 6, bump joint; 7, mould.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiments of the invention are described in detail, but the multitude of different ways that the present invention can be defined by the claims and cover is implemented.
As shown in Figure 1, the PP board product production technology of the present embodiment, it comprises the following steps:
Feed intake: ensureing to throw in PP raw material under the state that hopper is not empty;
Extrude: adopt single screw extrusion machine, extrude barrel and divide 4th district to heat, adopt electromagnetic induction to barrel, screw rod heating;
Exhaust: adopt vented barrel, utilize high temperature barrel and feeding spiro rod to make PP raw materials melt, the moisture at high temperature contained in PP raw material is become steam and excluded in time by the steam vent that barrel is arranged;
Shaping/sizing: the PP raw material of melting is clamp-oned in mould, shaping, be fixed to sheet material;
Brake/traction: by brake and hauling machine effect under, make the PP raw material of melting formed certain pressure and maintenance straight line be extruded;
Cutting plate/windrow: measure 1230MM length with tape measure, starts lath cutter, cuts out required length, is sling by plate, neatly overlay on specific rickstand with driving;
Heat treatment: heat-treat stacking the sheet material piled;
Bevelling: bevelling process is carried out to each water caltrop of sheet material.
In embodiments of the present invention, in the process of feeding intake, need feed intake in time, assorted material in PP raw material, can not be had.
In embodiments of the present invention, in extrusion, adopt single screw extrusion machine, extrusion screw rod speed is 10-15r/
Min; Extruding barrel divides 4th district to heat, district's feeding section temperature a: 190-200 DEG C, two melting compression section, district temperature: 195-205 DEG C, three district's homogenizing zone temperature: 195-205 DEG C, connector temperature: 185-195 DEG C.
In embodiments of the present invention, in shaping/type-approval process, to the mould of PP material forming/sizing be patrix, the forming recess that assembles of middle plate, counterdie, middle plate gating location is 160 degree of fan-shaped subtended angles, and die size is 1600*800; Mould comprises compression forming district and cooling and shaping district; Dies compress shaping area is divided into No.12 District to heat, that is: last district temperature: 155-160 DEG C, the first two district's temperature: 155-160 DEG C, first three district's temperature: 148-152 DEG C, front four district's temperature: 135-140 DEG C, the first five district's temperature: 130-135 DEG C, the first six district's temperature: 120-125 DEG C; Rear district's temperature a: 155-160 DEG C, rear two district's temperature: 155-160 DEG C, rear three district's temperature: 148-152 DEG C, rear four district's temperature: 135-140 DEG C, rear five district's temperature: 130-135 DEG C, rear six district's temperature: 120-125 DEG C; Shaping area: be connected to cold water pipe at mould the right and left, is constantly lowered the temperature to the sheet material after shaping by recirculated water, makes sheet material complete sizing.
In embodiments of the present invention, in brake/distraction procedure, in the exit position of mould installing brake mount and brake article, by regulating upper and lower brake article pressing plate elasticity, make the PP raw material of melting form certain pressure in compression forming district, make the close structure of extruded product, after brake, hauling machine is housed, by regulating the speed of hauling machine, maintenance constant dimensions is at the uniform velocity advanced.
In embodiments of the present invention, in cutting plate/windrow process, be placed with three stainless square steel between plate and plate, stainless square steel between layers up and down point-blank.
In embodiments of the present invention, in heat treatment process, heat-treat stacking the sheet material piled with baking box, heat treatment is mainly divided into 12 sections:
First paragraph warm temperature 40 DEG C, 20 minutes heating-up times;
Second segment thermostat temperature 60 DEG C, constant temperature time 90 minutes;
3rd section of warm temperature 60 DEG C, warm-up time 20 minutes;
4th section of thermostat temperature 80 DEG C, constant temperature time 90 minutes;
5th section of warm temperature 80 DEG C, warm-up time 20 minutes;
6th section of thermostat temperature 100 DEG C, constant temperature time (CM) * 3*60 minute;
7th section of cooling temperature 100 DEG C, temperature fall time 20 minutes;
8th section of thermostat temperature 80 DEG C, constant temperature time 180 minutes;
9th section of cooling temperature 80 DEG C, constant temperature time 20 minutes;
Tenth section of thermostat temperature 60 DEG C, constant temperature time 180 minutes;
11 section of cooling temperature 60 C, temperature fall time 20 minutes;
12 section of thermostat temperature 40 DEG C, constant temperature time 180 minutes.
Below in conjunction with drawings and the specific embodiments, application principle of the present invention is further described.
1, feed intake:
Feed intake in time, ensure that hopper is not empty; Different material can not be used with, notes distinguishing the trade mark of material and the type of material, prevents foreign material, assorted material enters hopper, cause feed opening to block.
2, extrude:
Adopt single screw extrusion machine, extrude barrel and divide 4th district to heat:
One district's feeding section temperature: 190-200 DEG C, two melting compression section, district temperature: 195-205 DEG C, three district's homogenizing zone temperature: 195-205 DEG C, connector temperature: 185-195 DEG C, extrusion screw rod speed: 10-15r/min.
3, be vented:
Adopt vented barrel, utilize barrel and feeding spiro rod to the heating effect of PP raw material, make the water evaporates that contains in PP raw material and excluded in time by the steam vent that barrel is arranged, ensure that the quality of product; Meanwhile, do not need to install powerful drying plant on hopper, save equipment and the energy, decrease operation, shorten process time, saving is produced into.
4, shaping/sizing:
The forming recess that mould is patrix, middle plate, counterdie assemble, middle plate gating location is 160 degree of fan-shaped subtended angles, and die size is 1600*800; Mould is divided into two parts: compression forming district and cooling and shaping district.
Dies compress divides into the heating of 4th district, that is:
Last district temperature: 155-160 DEG C, the first two district's temperature: 155-160 DEG C, first three district's temperature: 148-152 DEG C;
Front four district's temperature: 135-140 DEG C, the first five district's temperature: 130-135 DEG C, the first six district's temperature: 120-125 DEG C;
Rear district's temperature a: 155-160 DEG C, rear two district's temperature: 155-160 DEG C, rear three district's temperature: 148-152 DEG C;
Rear four district's temperature: 135-140 DEG C, rear five district's temperature: 130-135 DEG C, rear six district's temperature: 120-125 DEG C;
Shaping area: be connected to cold water pipe at mould the right and left, is constantly lowered the temperature to the sheet material after shaping by recirculated water, makes sheet material complete sizing.
5, brake/draw:
In the exit position of mould installing brake mount and brake article, by regulating upper and lower brake article pressing plate elasticity, the PP raw material of melting is made to form certain pressure in compression forming district, make the close structure of extruded product, after brake, hauling machine is housed, by regulating the speed of hauling machine, maintenance constant dimensions is at the uniform velocity advanced, sheet material, in the eccentric situation of the less appearance of extrusion mould-outlet, is raised the efficiency, and decreases the step manually repeatedly regulating brake.
6, cutting plate/windrow:
Measure 1230MM length with tape measure, start lath cutter, cut out required length, with driving, plate is sling, neatly overlay on specific rickstand.Between plate and plate, be placed with three stainless square steel, square steel between layers seems preferably point-blank up and down.
7, heat treatment:
Heat-treat stacking the sheet material piled with baking box, thus eliminate the internal stress of sheet material, make sheet material in process can not outstanding figure, distortion.PP plate is heat-treated and is mainly divided into 12 sections:
First paragraph warm temperature 40 DEG C, 20 minutes heating-up times;
Second segment thermostat temperature 60 DEG C, constant temperature time 90 minutes;
3rd section of warm temperature 60 DEG C, warm-up time 20 minutes;
4th section of thermostat temperature 80 DEG C, constant temperature time 90 minutes;
5th section of warm temperature 80 DEG C, warm-up time 20 minutes;
6th section of thermostat temperature 100 DEG C, constant temperature time (CM) * 3*60 minute;
7th section of cooling temperature 100 DEG C, temperature fall time 20 minutes;
8th section of thermostat temperature 80 DEG C, constant temperature time 180 minutes;
9th section of cooling temperature 80 DEG C, constant temperature time 20 minutes;
Tenth section of thermostat temperature 60 DEG C, constant temperature time 180 minutes;
11 section of cooling temperature 60 C, temperature fall time 20 minutes;
12 section of thermostat temperature 40 DEG C, constant temperature time 180 minutes.
8, bevelling technique:
Bevelling process is carried out to each water caltrop of sheet material, makes product more attractive in appearance, and can prevent sheet material water chestnut limit from hurting finger in handling process.
As Fig. 2 present invention also offers a kind of PP plate producing device, this device comprises:
Barrel screw rod 4 is connected with reduction box 2, and barrel and reduction box 2 shell are fixed together, and barrel screw rod is located in barrel, barrel screw rod is connected with reduction box 2 driven shaft, barrel is provided with Hopper Dryer, and bump joint 6 is equipped with in cartridge outlet position, is linked together by flange pull head 6 and mould 7.During production, by controlling electric cabinet 5 pairs of barrels and mould is heated, temperature arrives design temperature, starter motor operates, and drive reduction box 2 by belt transmission, reduction box 2 drives barrel screw rod 4 to operate again, raw material in Hopper Dryer enters barrel melting by the running of barrel screw rod 4 and is extruded, clamp-on mould 7 through bump joint 6, at dies compress, district is compressed into type, be shaped in shaping area rule product and extrusion die 7; Reduction box 2 provides power by motor 1.
By the PP board product that the PP board product production technology of the present embodiment is produced, the problems such as the dim situation of its finished surface color is obviously improved, the hole of sheet material inside, steam bubble or acne scar greatly reduces, the various aspects of performance of sheet material significantly improves, crooked, the distortion of sheet material and smoothness have also been obtained effective process; Meanwhile, with regard to production technology itself, which also enhances production efficiency, reduce production cost.
Claims (7)
1. a PP material plate processing technology, is characterized in that, comprises; Feed intake: ensureing to throw in PP raw material under the state that hopper is not empty; Extrude: adopt single screw extrusion machine, extrude barrel and divide 4th district to heat, use electromagnetic induction device to heat gun barrel, screw rod; Exhaust: adopt vented barrel, utilize high temperature barrel and feeding spiro rod to make PP raw materials melt, the moisture at high temperature contained in PP raw material is become steam and excluded in time by the steam vent that barrel is arranged; Shaping/sizing: the PP raw material of melting is clamp-oned in mould, shaping, be fixed to sheet material; Brake/traction: by brake and hauling machine effect under, make the PP raw material of melting formed certain pressure and maintenance straight line be extruded; Cutting plate/windrow: measure 1230MM length with tape measure, starts lath cutter, cuts out required length, is sling by plate, neatly overlay on specific rickstand with driving; Heat treatment: heat-treat stacking the sheet material piled; Bevelling: bevelling process is carried out to each water caltrop of sheet material.
2. PP plate processing technology as claimed in claim 1, it is characterized in that, when feeding intake, need feed intake in time, different material can not be used with.
3. PP plate processing technology as claimed in claim 1, is characterized in that, when extruding, adopt single screw extrusion machine, extrusion screw rod speed is 10-15r/min; Extruding barrel divides 4th district to heat, district's feeding section temperature a: 190-200 DEG C, two melting compression section, district temperature: 195-205 DEG C, three district's homogenizing zone temperature: 195-205 DEG C, connector temperature: 185-195 DEG C.
4. PP material plate production technology as claimed in claim 1, is characterized in that, to the mould of PP material forming/sizing be patrix, the forming recess that assembles of middle plate, counterdie, middle plate gating location is 160 degree of fan-shaped subtended angles, and die size is 1600*800; Mould comprises compression forming district and cooling and shaping district; Dies compress shaping area is divided into No.12 District to heat, that is: last district temperature: 155-160 DEG C, the first two district's temperature: 155-160 DEG C, first three district's temperature: 148-152 DEG C, front four district's temperature: 135-140 DEG C, the first five district's temperature: 130-135 DEG C, the first six district's temperature: 120-125 DEG C; Rear district's temperature a: 155-160 DEG C, rear two district's temperature: 155-160 DEG C, rear three district's temperature: 148-152 DEG C, rear four district's temperature: 135-140 DEG C, rear five district's temperature: 130-135 DEG C, rear six district's temperature: 120-125 DEG C; Shaping area: be connected to cold water pipe at mould the right and left, is constantly lowered the temperature to the sheet material after shaping by recirculated water, makes sheet material complete sizing.
5. PP plate processing technology as claimed in claim 1, it is characterized in that, in the exit position of mould installing brake mount and brake article, by regulating upper and lower brake article pressing plate elasticity, make the PP raw material of melting form certain pressure in compression forming district, make the close structure of extruded product, after brake, hauling machine is housed, by regulating the speed of hauling machine, maintenance constant dimensions is at the uniform velocity advanced.
6. PP plank stuff production technology as claimed in claim 1, it is characterized in that, during cutting plate/windrow, be placed with three stainless square steel between plate and plate, stainless square steel between layers up and down point-blank.
7. PP plate processing technology as claimed in claim 1, it is characterized in that, heat-treat stacking the sheet material piled with baking box, heat treatment is mainly divided into 12 sections:
First paragraph warm temperature 40 DEG C, 20 minutes heating-up times;
Second segment thermostat temperature 60 DEG C, constant temperature time 90 minutes;
3rd section of warm temperature 60 DEG C, warm-up time 20 minutes;
4th section of thermostat temperature 80 DEG C, constant temperature time 90 minutes;
5th section of warm temperature 80 DEG C, warm-up time 20 minutes;
6th section of thermostat temperature 100 DEG C, constant temperature time (CM) * 3*60 minute;
7th section of cooling temperature 100 DEG C, temperature fall time 20 minutes;
8th section of thermostat temperature 80 DEG C, constant temperature time 180 minutes;
9th section of cooling temperature 80 DEG C, constant temperature time 20 minutes;
Tenth section of thermostat temperature 60 DEG C, constant temperature time 180 minutes;
11 section of cooling temperature 60 C, temperature fall time 20 minutes;
12 section of thermostat temperature 40 DEG C, constant temperature time 180 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510786230.XA CN105365190A (en) | 2015-11-16 | 2015-11-16 | Propene polymer (PP) raw material plate machining process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510786230.XA CN105365190A (en) | 2015-11-16 | 2015-11-16 | Propene polymer (PP) raw material plate machining process |
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| CN105365190A true CN105365190A (en) | 2016-03-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109774100A (en) * | 2019-02-25 | 2019-05-21 | 无锡市宏佳华新材料有限公司 | PP board machining process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109774100A (en) * | 2019-02-25 | 2019-05-21 | 无锡市宏佳华新材料有限公司 | PP board machining process |
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Application publication date: 20160302 |