CN109940778A - The manufacturing method of resin-formed body - Google Patents
The manufacturing method of resin-formed body Download PDFInfo
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- CN109940778A CN109940778A CN201811374400.3A CN201811374400A CN109940778A CN 109940778 A CN109940778 A CN 109940778A CN 201811374400 A CN201811374400 A CN 201811374400A CN 109940778 A CN109940778 A CN 109940778A
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- resin
- formed body
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Abstract
The present invention provides a kind of manufacturing method of resin-formed body, it includes following processes: the rove of the strip containing reinforcing fiber is continuously fed to carry out preparing fiber-reinforced resin in the base resin that heating is plasticized it with the state of strip, after being shaped to resin-formed body using the fiber-reinforced resin, the molding resin-formed body of institute is heated in non-oxidizing atmosphere.
Description
Cross reference to related applications
This application claims the Japanese patent application submitted on November 20th, 2017 the 2017-222838th and in July, 2018
The Japanese patent application submitted the 2018-134092nd priority on the 17th, the disclosure of which (including specification, attached drawing and pluck
Will) be incorporated herein by reference in their entirety.
Technical field
The present invention relates to the manufacturing methods of the resin-formed body formed by fiber-reinforced resin.
Background technique
Structure member etc. as automobile uses resin forming for lightness, the quietness etc. for improving automobile mostly
Body.Especially desired strength, rigid component are generally formed by resin-formed body, and the resin-formed body in base resin by containing
There is the fiber-reinforced resin of the reinforcing fibers such as glass fibre, carbon fiber, aromatic polyamide fibre to be formed.As these components,
For example, can enumerate gear, roller member, the retainer of bearing, the sensor outer housing of electric power steering apparatus, electric oil pump it is outer
Shell etc..
As fiber-reinforced resin, for example, being generally used for cooperating the reinforcing fiber of staple fiber shape in base resin, and make
Staple fiber compound made of kneading disk with twin shaft kneading machine etc. is kneaded under high temperature and pressure.However, in recent years, along with
The miniaturization of automobile equipment class, the requirement of high output, for above-mentioned various parts, also require further high intensity,
High rigidity and wearability, the raising of fatigue-resistance characteristics etc..
It is known in the case where the resin-formed body formed by fiber-reinforced resin, in order to cope with these requirements, effectively
It is the fibre length for increasing the reinforcing fiber contained in resin-formed body.Therefore, right in order to increase the fibre length of reinforcing fiber
The manufacturing method of resin-formed body has carried out various researchs.For example, being had studied in Japanese Unexamined Patent Publication 2010-000654 bulletin
Use the reinforcing fiber that the rove of strip made of reinforcing fiber boundling is replaced to staple fiber shape using collecting agent.Increase as a result,
Add the fibre length of the reinforcing fiber contained in resin-formed body.
That is, in the plasticising cylinder of extruder, on one side by as the base resin on the basis of resin-formed body to a direction
Heating makes its plasticising on one side for ground conveying.At the same time, the rove of strip is passed through to the supply mouth that the midway of plasticising cylinder is arranged in,
It is continuously fed in the base resin for being plasticized the midway conveyed in cylinder with the state of strip, makes their integrations.As a result,
From the front end continuously extrusion molding of plasticising cylinder, the fiber reinforcement line (fiber-reinforced resin) of strip is prepared.
Then, when being granulated prepared fiber reinforcement line using strands cutting machine (pelletizer), production includes
The particle of its substantially reinforcing fiber of full length.Thereafter, it using made particle, is formed for example, by injection moulding
For resin-formed body.Although in this way, sometimes because injection moulding when mixing due to some fibre be cut off and more or less shorten,
Compared with the case where using staple fiber compound, the fibre length of the reinforcing fiber contained in resin-formed body can be increased.
In Japanese Unexamined Patent Publication 2014-166712 bulletin, proposes and fiber-reinforced resin is directly filled into and is plasticized cylinder
Front end connection mold mold in space, be shaped to resin-formed body, which is in injection (mo(u)lding) machine
It is plasticized in cylinder, the rove of strip is prepared with the state supply of strip.That is, in the plasticising cylinder of injection (mo(u)lding) machine,
Heating while conveying base resin to a direction for example, by the rotation of screw rod makes its plasticising.At the same time, it will grow
The rove of strip passes through the supply mouth that the midway of plasticising cylinder is arranged in, and is continuously fed in plasticising cylinder with the state of strip
In the base resin of the midway of conveying, fiber-reinforced resin is prepared.
Then, prepared fiber-reinforced resin is directly filled into the mold for the mold being connect with the front end of plasticising cylinder
Space manufactures resin-formed body.Although in this way, sometimes still can because injection moulding when mixing due to some fibre it is cut-off and more
It is rarer to shorten, but compared with the case where using staple fiber compound, the reinforcing fiber contained in resin-formed body can be increased
Fibre length.
In the resin-formed body formed by fiber-reinforced resin, in addition to make to contain in resin-formed body as described above
Other than the fibre length of reinforcing fiber is long, the molecular weight for constituting the base resin of resin-formed body is also important greatly.By same
When meet this 2 characteristics, the also excellent resin forming such as higher intensity, high rigidity and wearability, fatigue-resistance characteristics can be obtained
Body.But the manufacturer documented by Japanese Unexamined Patent Publication 2010-000654 bulletin, Japanese Unexamined Patent Publication 2014-166712 bulletin
In method, the fibre length for increasing reinforcing fiber and the molecular weight for increasing base resin are difficult to get both.
For example, if in order to manufacture resin-formed body, and pre-select (≈ highly viscous) basis big using molecular weight
Resin, then extruder, injection (mo(u)lding) machine plasticising cylinder in base resin and reinforcing fiber are kneaded when, be applied to reinforcing fiber
Stress become larger.Therefore, have the tendency that reinforcing fiber is cut off and fibre length shortens.In addition, the dispersion of reinforcing fiber sometimes
Property reduce, be evenly dispersed in reinforcing fiber can not in base resin.Moreover, if the fibre length of reinforcing fiber shortens,
Or dispersibility reduces, then the intensity of resin-formed body, rigidity reduce or wearability reduces instead.
If increasing the temperature of plasticising cylinder, the viscosity of base resin is reduced, even the base resin of high molecular weight,
It can inhibit the cutting of reinforcing fiber to a certain extent.But if increasing the temperature of plasticising cylinder, manufacture resin-formed body
Required energy consumption increases, and the manufacturing cost of resin-formed body rises.In addition, when being kneaded, base resin is thermally decomposed and molecule sometimes
Amount becomes smaller, and the wearability of resin-formed body, fatigue-resistance characteristics reduce.
On the other hand, if (≈ low viscosity) base resin that selection uses molecular weight small, there is resin-formed body
The trend that wearability, fatigue-resistance characteristics reduce.When especially reinforcing fiber is glass fibre, the trend is obvious.In addition, for example,
In the manufacturing method documented by Japanese Unexamined Patent Publication 2010-000654 bulletin, Japanese Unexamined Patent Publication 2014-166712 bulletin, have
Shi Wufa is closely sealed securely with reinforcing fiber by base resin.
That is, when preparing existing staple fiber compound, as described above, will be basic using kneading disk of twin shaft kneading machine etc.
The reinforcing fiber of resin and staple fiber shape is fully kneaded under high temperature and pressure.In addition, in injection moulding, also throughout injection
The overall length of the plasticising cylinder of molding machine is kneaded staple fiber compound, is heated.That is, right from molding period is prepared into
Staple fiber compound assigns enough pressure and heat.
Therefore, using above-mentioned pressure and heat, base resin can be made closely sealed securely with reinforcing fiber.In contrast,
Japanese Unexamined Patent Publication 2010-000654 bulletin, Japanese Unexamined Patent Publication 2014-166712 bulletin manufacturing method in, only logical
It crosses in the short time in the plasticising cylinder of extruder or injection (mo(u)lding) machine, base resin and reinforcing fiber can be kneaded, be added
Heat, therefore have the tendency that the pressure of mixing, shortage of heat.
Especially in the manufacturing method of Japanese Unexamined Patent Publication 2014-166712 bulletin, from being set to injection (mo(u)lding) machine
It is plasticized after the supply mouth supply rove of the midway of cylinder, obtained mixture is filled into mold immediately and manufactures resin forming
Body, therefore the pressure of mixing, heat are insufficient.Therefore, although being able to suppress the cutting of the reinforcing fiber caused by being kneaded, meeting
There is can not making base resin and reinforcing fiber closely sealed situation securely.
Summary of the invention
One of the objects of the present invention is to provide a kind of for manufacturing the manufacturing method of following resin-formed bodies, the resin
Formed body contains the base resin of fibre length long reinforcing fiber and high molecular weight, and base resin and reinforcing fiber are firm
Admittedly it is closely sealed, be comparably high-intensitive, high rigidity with status, and wearability, fatigue-resistance characteristics etc. are also excellent.
The resin of the one embodiment of the present invention formed by the fiber-reinforced resin containing base resin and reinforcing fiber at
Be characterized in the composition of the manufacturing method of type body include the resin-formed body of following processes manufacturing method: above-mentioned increasing will be contained
The rove of the strip of strong fiber is continuously fed to carry out heating the above-mentioned base resin for being plasticized it with the state of strip
In and the process for preparing above-mentioned fiber-reinforced resin；Above-mentioned resin forming is shaped to using prepared above-mentioned fiber-reinforced resin
The process of body；With by the process that is heated in non-oxidizing atmosphere of molding above-mentioned resin-formed body.
Detailed description of the invention
Hereinafter, being illustrated referring to attached drawing to embodiment, thus features described above clearly of the invention and further spy
Sign and advantage, wherein identical number is for indicating identical element.
Figure 1A is in an example to the embodiment of the manufacturing method in resin-formed body of the invention for continuous
Ground implementation prepare fiber-reinforced resin process and be shaped to resin-formed body process device an example briefly into
The sectional view of row explanation.
Figure 1B is briefly indicated molding resin-formed body in the manufacturing method of above-mentioned example in non-oxidizing gas
The figure of device used in the process heated in atmosphere.
Fig. 2 is in another example to the embodiment of the manufacturing method in resin-formed body of the invention for implementing
An example for preparing the process of fiber-reinforced resin and being shaped to the device of the process of resin-formed body is briefly illustrated
Sectional view.
Fig. 3 is that the number of the reinforcing fiber in the resin-formed body for indicating to manufacture in the embodiment of the present invention, comparative example is equal
The figure of the relationship of fibre length and the number-average molecular weight of base resin.
Fig. 4 is to indicate to measure the tensile strength of the resin-formed body manufactured in the embodiment of the present invention, comparative example and obtain
Result figure.
Fig. 5 is to indicate to measure by using the thrust force method of nano-hardness tester to manufacture in the embodiment of the present invention, comparative example
Resin-formed body in base resin and reinforcing fiber interface shear strength obtained by result figure.
Specific embodiment
Figure 1A is in an example to the embodiment of the manufacturing method in resin-formed body 4 of the invention for continuous
Ground implementation prepares the process of fiber-reinforced resin 16 and is shaped to an example of the device of the process of resin-formed body 4 briefly
The sectional view being illustrated.A referring to Fig.1, above-mentioned apparatus include injection (mo(u)lding) machine 3 and mold 5.Injection (mo(u)lding) machine 3 includes plasticising
Cylinder 2, which heats while by the conveying of conveying direction shown in white hollow arrow into figure of base resin 1 makes it
Plasticising.Mold 5 is corresponding with the manufactured shape of resin-formed body 4.Plasticising cylinder 2 is formed as tubular.
Mold 5 is connect via nozzle 6 with the front end of the front side (left side in figure) of the above-mentioned conveying direction of plasticising cylinder 2.Spray
Mouth 6 constitutes the front end of plasticising cylinder 2, as shown, connecting in injection moulding with the cast gate of mold 5.In the conveying of plasticising cylinder 2
The rear side in direction is connected with the hopper 7 that granular base resin 1 is made in such as receiving via feedway 8.Feedway
8 function includes that the base resin 1 for being contained in hopper 7 is for example supplied to plasticising cylinder 2 with preset supply amount.
Having heaters 9 is set in the periphery of plasticising cylinder 2, which is used for the base resin that will be conveyed in plasticising cylinder 2
1 heating makes its plasticising, which is provided in a manner of surrounding the periphery of plasticising cylinder 2 more along the conveying direction of base resin 1
It is a.Multiple heaters 9 can for example adjust temperature together, can also adjust temperature each independently.It is provided in plasticising cylinder 2
Screw rod 10, the screw rod 10 are used in plasticising cylinder 2 be kneaded base resin 1 and convey to above-mentioned conveying direction.Screw rod 10 includes
Rotary shaft 11 throughout the substantially overall length of plasticising cylinder 2 and the spiral helicine screw thread that is protruded outward from the outer peripheral surface of rotary shaft 11
(フライト)12.Rotary shaft 11 and screw thread 12 are for example formed as one.
It is rotary shaft 11 is consistent with the plasticising axis X of cylinder 2 by central shaft and can be rotated centered on above-mentioned axis X
Mode is disposed in plasticising cylinder 2.Rotary shaft 11 is in the substantially overall length of the conveying direction of base resin, and diameter is than in plasticising cylinder 2
Circumferential surface is small.Projection of shape of the radial outer rim of screw thread 12 in the plane vertical with axis X is the circle centered on axis X
Shape, by screw thread 12 circle and rotary shaft 11 concentrically in a manner of be arranged.
In addition, the internal diameter of inner peripheral surface of the circular outer diameter of screw thread 12 than being plasticized cylinder 2 is slightly smaller little by little.Therefore, it is rotating
Under the arranging state of the consistent figure of axis X of the central axis and plasticising cylinder 2 of axis 11, the radial outer rim and plasticising cylinder 2 of screw thread 12
Inner peripheral surface it is opposed across defined gap in its entire circumferential surface.In the outer peripheral surface of screw rod 10, in the groove 13 and plasticising
The spiral helicine groove 13 that base resin 1 is accommodated, conveyed between the inner peripheral surface of cylinder 2 is formed in the outer peripheral surface and screw thread of rotary shaft 11
Between 12.
Base resin 1 is fed into groove 13 from hopper 7 via feedway 8.Screw rod 10 utilizes rotation (not shown)
Mechanism is rotated as shown in the arrow of solid line in figure to a direction.In this way, with the rotation of screw rod 10, from hopper 7 to groove 13
The base resin 1 of interior supply is kneaded by the pressure from screw thread 12, while defeated shown in the arrow to white hollow
Direction is sent to convey.At this point, base resin 1 is heated by the heat from heater 9, slowly it is plasticized.
The midway of the conveying direction of base resin 1 in plasticising cylinder 2, being provided with will grow as being connected to inside and outside it
The rove 14 of strip is continuously fed to the supply mouth 15 of the supply unit (side feed glassware) in plasticising cylinder 2.Pass through above-mentioned supply mouth
15 are continuously fed into rove 14 in the base resin 1 of midway conveyed in plasticising cylinder 2 as the rotation of screw rod 10 is arrived
From the pressure of screw thread 12, it is kneaded with base resin 1.As a result, in from supply mouth 15 to the plasticising cylinder 2 nozzle 6, preparation is made
For the fiber-reinforced resin 16 on the basis of resin-formed body 4.
Supply mouth of the supply mouth 15 also as the 1 supply response auxiliary agent 19 of base resin into plasticising cylinder 2 functions, instead
Auxiliary agent 19 is answered to have the function of the closely sealed of the molecular weight of auxiliary foundation resin 1 and base resin 1 and reinforcing fiber.Receiving is anti-
The hopper 17 of auxiliary agent 19 is answered to connect via feedway 18 with supply mouth 15.The function of feedway 18 includes that will be contained in hopper
Shown in arrow of 17 reaction promoter 19 by double dot dash line in figure, such as with preset supply amount, it is supplied to plasticising cylinder 2.
Supply mouth 15 is also functioned as exhaust outlet, which removes the production when heating base resin 1 makes its plasticising
Raw gas, moisture etc..It is however important that not generating the base resin 1 of midway that conveys in plasticising cylinder 2 from supply mouth 15
It leaks out, i.e., so-called spilling (Vent-up).For this purpose, for example, it is preferable in such a way that following one kind or two or more.
With the conveying speed of base resin 1 the downstream side of supply mouth 15 is faster than upstream side and/or base resin 1 it is defeated
Mode of the amount of sending in the downstream side of supply mouth 15 more than upstream side is set between the outer diameter of rotary shaft 11 of screw rod 10, screw thread 12
Away from etc..
The heating temperature of heater 9 is set in the upstream side of supply mouth 15 and downstream side to be different temperature.
The supply amount of the base resin 1 from hopper 7 is adjusted using feedway 8.
Furthermore, it is possible to using the method for the well known generation for inhibiting to overflow all the time.
In the present invention, make the reinforcing fiber from the rove 14 that supply mouth 15 supplies as far as possible to maintain long stapled state
Containing being also important in resin-formed body 4.For this purpose, for example, it is preferable in such a way that following one kind or two or more.
The gap of the radial outer rim of the inner peripheral surface and screw thread 12 of adjustment plasticising cylinder 2.
Nozzle diameter, the flow diameter of mold 5 etc. of enlarged nozzle 6 compared with usually.
It is also possible to use the fibre length of the reinforcing fiber contained in well known increase resin-formed body 4 all the time
Method.
By using these methods, along with continuously implementation prepares the work of fiber-reinforced resin 16 to the device using Figure 1A
Sequence and the process for being shaped to resin-formed body 4 can make the fibre length of the reinforcing fiber contained in resin-formed body 4 up to example
More than 1mm or so or its.In the example of Figure 1A, mold 5 includes external mold corresponding with the face shaping of resin-formed body 4
(die cavity) 20 and internal model corresponding with the interior shape of resin-formed body 4 (mold core) 21.But according to manufactured resin forming
The shape, structure of the shape of body 4, mold 5 can arbitrarily be set.
The plasticising internally plasticized fiber-reinforced resin 16 of cylinder 2 by nozzle 6 injected, be filled into the die cavity 20 of mold 5 with
Space in mold between mold core 21.Then, it is shaped to resin-formed body 4 corresponding with the shape in space in mold.In order to make
Continuously implemented in the manufacturing method of the example with the device of the example for the Figure 1A for including above-mentioned injection (mo(u)lding) machine 3 and mold 5
It prepares the process of fiber-reinforced resin and is shaped to the process of resin-formed body, supply base resin 1 to hopper 7 first.In addition,
Prepare the continuous rove 14 of strip.In addition, as needed to 17 supply response auxiliary agent 19 of hopper.
As basic resin 1, the fiber-reinforced resin 16 as the forming material of resin-formed body 4 may make up
Various resins.Especially as the basic tree for the resin-formed body 4 for being used to form above-mentioned desired strength, rigidity, wearability etc.
Rouge 1, for example, polyamide (PA), polyphenylene sulfide (PPS) etc. can be enumerated.As the concrete example of polyamide, for example, can enumerate PA6,
The fatty polyamides such as PA66, PA46, PA12, PA612, PA610, PA11, PA410, PA6T, PA9T, PA10T, PAMXD6 etc.
Aromatic polyamide etc..Base resin 1 can supply samely in the form of graininess etc..
Polyamide utilizes the remaining carboxyl in end by as described above heating resin-formed body in non-oxidizing atmosphere
(- COOH) and amino (- NH2) reaction and molecular weight.In addition, by above-mentioned heating, carboxyl and amino and enhancing
Fiber-reactive, base resin and reinforcing fiber are by closely sealed securely.As the reinforcing fiber for constituting rove 14, for example, can enumerate
Glass fibre, carbon fiber, aromatic polyamide fibre etc..Rove 14 is using collecting agent that these enhancings are fine samely
It ties up boundling and makes.
That is, rove 14 such as can make in the following way: the collecting agent of liquid being coated on increasing using applicator roll
Strong fiber dries these fibers at high temperature, to make their boundlings and form line, by the line of the regulation radical formed in this way
End part aligning, resulting line is batched etc..As reaction promoter 19, for example, can be enumerated according to the type of base resin
Have the function of each of the function of the adaptation of the molecular weight of auxiliary foundation resin and auxiliary foundation resin and reinforcing fiber
Kind compound.
For example, when base resin 1 is above-mentioned polyamide, as reaction promoter 19, for example, carbodiimide etc. can be enumerated.
Carbodiimide carries out the carboxyl and ammonia of the end of polyamide using the effect of the carbodiimide (- N=C=N-) in molecule
The reaction of base or make that carboxyl and amino are reacted with reinforcing fiber or its own is reacted with carboxyl and amino.Therefore, it utilizes
Carbodiimide can make polyamide molecular weight.In addition it is possible to improve the adaptation of polyamide and reinforcing fiber.
As carbodiimide, as long as with the compound of carbodiimide, to be not particularly limited in the molecule, it can be with
It is the single carbon diimine with 1 carbodiimide, is also possible to the poly- carbodiimide with multiple carbodiimides.In addition,
The various carbodiimides such as fatty family carbodiimide, aromatic system carbodiimide, carbodiimide modified body can be used.
The mixing ratio of carbodiimide is not particularly limited, preferably raw material used in the preparation of fiber-reinforced resin 16
Total amount in 0.5 mass % or more, and preferably 4 mass % or less.
Carbodiimide can for example be supplied in the form of simple substance, can also by with polyamide it is dry-mixed made of in the form of master batch
Supply.
It should be noted that the reaction promoters such as carbodiimide 19 can not be supplied in the present invention.Even in this case, root
Also it can make to form resin-formed body by heating resin-formed body 4 after molding in non-oxidizing atmosphere according to the present invention
41 molecular weight of base resin.In addition, by above-mentioned heating, the closely sealed of base resin 1 and reinforcing fiber also can be improved
Property.Next, in the manufacturing method of the example, for example, separately carrying out temperature management one to multiple heaters 9 on one side
While feedway 8 is made to work, the base resin 1 for being contained in hopper 7 is started to supply to plasticising cylinder 2 with preset supply amount
It gives.In this way, the base resin 1 supplied is as described above as the rotation of screw rod 10 is mixed by the pressure from screw thread 12
Refining, while the conveying direction shown in the arrow to white hollow conveys, and is heated by the heat from heater 9, thus
Slowly it is plasticized.
In this state, the base for the midway for being continuously fed to convey in plasticising cylinder 2 by rove 14 by supply mouth 15
In plinth resin 1.In this way, the rove 14 supplied is with the rotation of screw rod 10 and by the pressure from screw thread 12, with basic tree
Rouge 1 is kneaded, and is heated by the heat from heater 9, and fiber-reinforced resin 16 is prepared.In addition, at this point it is possible to leading to as needed
It crosses supply mouth 15 and is supplied to the reaction promoter 19 that is contained in hopper 17 with preset supply amount and conveyed in plasticising cylinder 2
In the base resin 1 of midway.
Prepared fiber-reinforced resin 16 is injected by nozzle 6 as described above, is filled into the die cavity 20 and mould of mold 5
Space in mold between core 21.Then, it is shaped to resin-formed body 4 corresponding with the shape in space in mold.Figure 1B is letter
Strategic point indicate in the manufacturing method of above-mentioned example by the process that is heated in non-oxidizing atmosphere of molding resin-formed body 4
The figure of used device.
B referring to Fig.1, above-mentioned apparatus include chamber 22, heater 23 and vacuum pump 24.Chamber 22 accommodates resin-formed body 4.
Heater 23 heats the resin-formed body 4 being contained in chamber 22.As defined in vacuum pump 24 is made and will be decompressed in chamber 22
The reduced atmosphere (non-oxidizing atmosphere) of vacuum degree.Heater 23 is connect with heater power source 25, which is used for
The heater 23 is set to be powered and heat resin-formed body 4.
In order to use above-mentioned apparatus to implement the molding resin of institute in previous process of the heating in the manufacturing method of the example
The process of formed body 4, firstly, accommodating resin-formed body 4 in chamber 22.Next, closing chamber 22, make 24 work of vacuum pump
Make, defined vacuum degree will be decompressed in chamber 22, be formed as the reduced atmosphere of non-oxidizing atmosphere.Then, using adding
Hot device power supply 25 is powered to heater 23, and the resin-formed body 4 in chamber 22 is heated.
In this way, the base resin 1 of formation resin-formed body 4 is according to previously described mechanism by molecular weight.In addition, base
Plinth resin 1 and reinforcing fiber are closely sealed securely.It is preferred that the temperature of heating to be set as to the anti-of the functional group of the end of base resin 1
Temperature of the temperature that should be carried out more than or lower than the fusing point of base resin 1.When the temperature of heating is lower than the range, base resin 1
The reaction of functional group of end can not carry out rapidly.Accordingly, it is possible to which 1 molecular weight of base resin can not be made or make base
Plinth resin 1 and reinforcing fiber are closely sealed securely.On the other hand, when the temperature of heating is more than above-mentioned range, when heated may
Generate the dimensional accuracy reduction of thermal deformation and resin-formed body 4.
In contrast, by the range for keeping the temperature of heating above-mentioned, thermal deformation when heating can be inhibited on one side and tieed up
The dimensional accuracy of resin-formed body 4 is held, makes to form 1 molecular weight of the base resin of resin-formed body 4 on one side, and make basic tree
Rouge 1 and reinforcing fiber are closely sealed securely.For example, the temperature of heating is preferably 180 DEG C or more, especially when base resin is PA66
Preferably 200 DEG C or more, and preferably 250 DEG C hereinafter, particularly preferably 240 DEG C or less.
The vacuum degree in chamber 22 when heating can reduce the partial pressure of oxygen in chamber 22 and be set as example temperature as described above
The range appropriate of the oxygenolysis of base resin 1 is not generated when spending range heated resin formed body 4.Indicate the chamber of vacuum degree
It's not limited to that for the specific range of interior pressure, for example, it is preferable to be 10Pa hereinafter, particularly preferably 5Pa or less.But
When set vacuum degree excessively high (pressure is too small), reaches the vacuum degree and need to expend for a long time.Accordingly, it is possible to make resin forming
The productivity of body 4 reduces and manufacturing cost rises.
As described above, being depressurized to not generate base when with defined temperature range heated resin formed body 4 in chamber 22
The degree of the oxygenolysis of plinth resin 1.Therefore, the indoor pressure of chamber is, for example, 0.1Pa or more, especially 0.5Pa or more
?.Heating time for example depending on the size of resin-formed body 4, shape etc., can be set as that the resin forming can be made
The abundant molecular weight of base resin 1 in the entirety of body 4, and can sufficiently improve the closely sealed of base resin 1 and reinforcing fiber
The range appropriate of property.It's not limited to that for the specific range of heating time, for example, it is preferable to be 1 hour or more, particularly preferably
3 hours or more.
But when the overlong time of heating, base resin 1 may be made to deteriorate, generate thermal decomposition, make molecule quantitative change instead
It is small.In addition, it is also contemplated that energy consumption needed for manufacture resin-formed body 4 increases, and the manufacturing cost of resin-formed body 4 rises.Therefore
The time of heating is preferably 15 hours in above-mentioned range hereinafter, particularly preferably 12 hours or less.
By heating resin-formed body 4 conditions as described above, can make to form the base resin of resin-formed body 4
1 molecular weight well.In addition, also can sufficiently improve the adaptation of base resin 1 Yu reinforcing fiber.Therefore, institute as above
It states, along with the fibre length that can increase the reinforcing fiber contained in resin-formed body 4 as far as possible, so as to manufacture and status
Compared to higher intensity, high rigidity and wearability, fatigue-resistance characteristics etc. also excellent resin-formed body 4.
It should be noted that as non-oxidizing atmosphere reduced atmosphere can also be replaced using non-active gas atmosphere, this is non-live
Property gas atmosphere be using such as non-active gas such as nitrogen, argon gas to being replaced in chamber 22 made of.Alternatively, can also be with
It supplies non-active gas under reduced pressure and forms reduced atmosphere+non-active gas atmosphere.Fig. 2 is in resin forming of the invention
The process of fiber-reinforced resin 16 is prepared for implementation in another example of the embodiment of the manufacturing method of body 4 and is shaped to
The sectional view that one example of the device of the process of resin-formed body 4 is briefly illustrated.
Referring to Fig. 2, above-mentioned apparatus includes extruder 26 and cooling bath 27.Extruder 26 will contain base resin and derive from
The fiber-reinforced resin 16 of the reinforcing fiber of the rove 14 of strip continuously extrusion molding be strip threadiness.Cooling bath 27 will
The fiber-reinforced resin 16 of strip by extrusion molding continuously cools down.In addition, above-mentioned apparatus includes pelletizer 28, this is made
Grain machine 28, which will cut into specific length in the fiber-reinforced resin 16 of the cooling strip of cooling bath 27, makes its granulating.In addition,
Above-mentioned apparatus includes injection (mo(u)lding) machine 30 and mold 31.Injection (mo(u)lding) machine 30 includes plasticising cylinder 29, which on one side will be through
The conveying of conveying direction shown in white hollow arrow into figure of the fiber-reinforced resin 16 of granulating carries out heating on one side makes its increasing
Modeling.Mold 31 is corresponding with the manufactured shape of resin-formed body 4.
Extruder 26 includes plasticising cylinder 32, which on one side conveys base resin into figure shown in black arrow
Direction conveying carries out heating on one side makes its plasticising.Mould is connected in the front side (being left side in figure) of the conveying direction of plasticising cylinder 32
First 33, which is used for fiber-reinforced resin with the continuously extrusion molding of defined cross sectional shape.Die head 33 constitutes plasticising
The front end of cylinder 32.The hopper for accommodating base resin is connected with via feedway 34 in the rear side of the conveying direction of plasticising cylinder 32
35.The function of feedway 34 includes that the base resin for being contained in hopper 35 is for example supplied to increasing with preset supply amount
Mould cylinder 32.
Although not shown in the periphery of plasticising cylinder 32, the base resin for will convey in plasticising cylinder 32 can be set
The heater that heating is plasticized it.It is provided with screw rod 36 in plasticising cylinder 32, which is used for base resin in plasticising cylinder
It is kneaded in 32 and is conveyed to conveying direction.It is plasticized cylinder 32, the example that heater and screw rod 36 can respectively with previously described Figure 1A
Plasticising cylinder 2, heater 9 and screw rod 10 in son are similarly constituted.
Screw rod 36 is rotated using rotating mechanism (not shown) to a direction.In this way, being supplied in plasticising cylinder from hopper 35
Base resin rotated as the rotation of screw rod 36 is under pressure, while being conveyed to conveying direction shown in black arrow.This
When, base resin is heated by the heat from heater, is slowly plasticized.The conveying direction of base resin in plasticising cylinder 32
Midway, be provided with for being connected to inside and outside it and the rove of strip 14 be continuously fed to the supply unit in plasticising cylinder 32
The supply mouth 37 of (side feed glassware).
The rove 14 being continuously fed by above-mentioned supply mouth 37 in the base resin of the midway conveyed in plasticising cylinder 32
It is under pressure with the rotation of screw rod 36, is kneaded with base resin.As a result, from supply mouth 37 to the plasticising die head 33
In cylinder 32, the fiber-reinforced resin 16 on the basis as resin-formed body 4 is prepared.Supply mouth 37 also plays function as exhaust outlet
Can, which, which removes, makes the gas generated when its plasticising, moisture etc. in heating base resin.
It should be noted that the base resin of the midway conveyed in plasticising cylinder 32 in order to prevent is overflowed from supply mouth 37, or
Contain the reinforcing fiber in rove 14 in resin-formed body 4 with long stapled state as far as possible, it is still preferred to using above-mentioned each
Kind method.Prepared fiber-reinforced resin 16 is continuously extruded by the die head 33 connecting with the front end of plasticising cylinder 32
Type is the threadiness of strip.
The fiber-reinforced resin 16 of strip by extrusion molding be dipped into the cooling water 38 in cooling bath 27 and by
It is cooling, it is then fed to pelletizer 28 and is granulated.Production includes its substantially reinforcing fiber of full length as a result,
Granular fiber-reinforced resin 16.Next, made granular fiber-reinforced resin 16 is supplied to injection moulding
Machine 30.Injection (mo(u)lding) machine 30 is not other than having supply mouth in the midway for being plasticized cylinder 29, with the note in the example of previous Figure 1A
Molding machine is penetrated similarly to constitute.That is, the front side of conveying direction shown in the arrow of white hollow (is schemed in the figure of plasticising cylinder 29
In be left side) front end, be connected with mold 31 via nozzle 39.Nozzle 39 constitutes the front end of plasticising cylinder 29, in injection moulding,
It is connect with the cast gate of mold 31.
In the rear side of the conveying direction of plasticising cylinder 29, the granular fiber reinforcement of receiving is connected with via feedway 41
The hopper 40 of resin 16.The function of feedway 41 includes fiber-reinforced resin 16 by hopper 40 is contained in for example to set in advance
Fixed supply amount is supplied to plasticising cylinder 29.Although not shown in the periphery of plasticising cylinder 29, it is provided with for cylinder 29 will to be plasticized
The fiber-reinforced resin 16 of interior conveying heats the heater for being plasticized it.It is provided with screw rod 42 in plasticising cylinder 29, the screw rod 42
For fiber-reinforced resin 16 to be kneaded in plasticising cylinder 29 and is conveyed to conveying direction.
Be plasticized cylinder 29, heater and screw rod 42 can respectively with the plasticising cylinder 2 in the example of previously described Figure 1A, heating
Device 9 and screw rod 10 are similarly constituted.Mold 31 includes outer with resin-formed body 4 in the same manner as the mold 5 in the example of Figure 1A
See the corresponding die cavity 43 of shape and mold core 44 corresponding with the interior shape of resin-formed body 4.However, it is possible to according to manufactured
The shape of resin-formed body 4 arbitrarily sets the shape, structure of mold 31.
Screw rod 42 is rotated using rotating mechanism (not shown) to a direction.In this way, being supplied in plasticising cylinder from hopper 40
Fiber-reinforced resin 16 rotated as the rotation of screw rod 42 is under pressure, while it is defeated shown in the arrow to white hollow
Direction is sent to convey.At this point, fiber-reinforced resin 16 is heated by the heat from heater, slowly it is plasticized.In plasticising cylinder 29
In the mold that the fiber-reinforced resin 16 of plasticising injected by nozzle 39, is filled between the die cavity 43 of mold 31 and mold core 44
Space.Then, it is shaped to resin-formed body 4 corresponding with the shape in space in mold.
In the same manner as preceding example, such as using the device of Figure 1B, by the molding resin-formed body 4 of institute in reduced atmosphere etc.
It is heated in non-oxidizing atmosphere.Thus the base resin to form resin-formed body 4 is produced by molecular weight and base resin
With reinforcing fiber closely sealed resin-formed body 4 securely.Therefore, contain in resin-formed body 4 along with can increase as far as possible
It is also excellent can to manufacture higher intensity, high rigidity and wearability, fatigue-resistance characteristics etc. compared with status for the fibre length of reinforcing fiber
Different resin-formed body 4.
As basic resin and reinforcing fiber, the various base resins that illustrate in preceding example, reinforcing fiber be can be used.
The condition (vacuum degree, temperature, time etc.) of heating and it is other can also be same as preceding example.It, can also as non-oxidizing atmosphere
Decompression gas is formed similarly to use non-active gas atmosphere to replace reduced atmosphere or supply non-active gas under reduced pressure
Atmosphere+non-active gas atmosphere.
It should be noted that composition of the invention is not limited to the device of the example using each figure described above.For example, using
Prepared fiber-reinforced resin is shaped in the process of resin-formed body, all the time public according to the shape of resin-formed body
The various forming methods known can be used.As above-mentioned forming method, for example, injection moulding, extrusion forming method, layer can be enumerated
Molded method, Transfer molding method, extrusion moulding etc..
In addition, in the process of heated resin formed body, it can be all the time known using Hot-blast Heating, induction heating etc.
Various heating methods replace heater.In addition, within the scope of the item documented by the range of patent requirements protection, Ke Yishi
Apply various design alterations.
Hereinafter, being further illustrated based on embodiment, comparative example to the present invention, but composition of the invention is not limited to these
Embodiment, comparative example.Embodiment 1 is illustrated below.Using the device of Figure 1A, Figure 1B, using the manufacturing method of the present invention,
Manufacture ISO multipurpose test film A type (thickness: the width of 4mm, narrow specified in ISO standards ISO3167
Degree: 10mm) it is used as resin-formed body 4.
That is, being continuously fed to the rove 14 of strip in the plasticising cylinder 2 of injection (mo(u)lding) machine 3 with the state of strip
Fiber-reinforced resin 16 is prepared in the base resin 1 of the midway of conveying, is directly filled into and is connect with the front end of plasticising cylinder 2
Mold 5 mold in space and be shaped to resin-formed body 4.Then, the molding resin-formed body 4 of institute is housed in chamber 22
It is interior, in the state of being decompressed to vacuum degree 1Pa or less in by chamber 22, is heated 5 hours at 220 DEG C and manufacture resin-formed body
4。
As basic resin 1, the non-reinforced PA66 (LEONA (registered trademark) of Asahi Kasei Corporation is used
1402S〕.As rove 14, high-intensitive glass fibre (tensile modulus of elasticity: 81~100GPa) is collected using using collecting agent
Rove made of beam.The ratio of glass fibre is 30 mass % of the total amount of glass fibre and base resin.
Using the example that molding resin-formed body 4 does not heat under reduced pressure similarly to Example 1 as comparative example 1.Under
It is illustrated in face of embodiment 2.Using using collecting agent by the glass fibre of usual intensity (tensile modulus of elasticity: 65~
80GPa) rove made of boundling makes the heating condition of resin-formed body 4 below vacuum degree 1Pa, temperature as rove 14
It is heated at 220 DEG C 10 hours, in addition to this, manufactures the resin-formed body 4 of same shape, identical size similarly to Example 1.
Using the example that molding resin-formed body 4 does not heat under reduced pressure similarly to Example 2 as comparative example 2.
Embodiment 3 is illustrated below.Prepare the particle comprising the substantially reinforcing fiber of full length about 11mm to make
For fiber-reinforced resin 16.Base resin is PA66, and reinforcing fiber is the glass fibre (tensile modulus of elasticity: 65 of usual intensity
~80GPa), the ratio of glass fibre is 30 mass % of the total amount of glass fibre and base resin.
As particle, being fabricated using extruder 26, cooling bath 27 and the pelletizer 28 in the device using Fig. 2
Grain.That is, the rove 14 of strip is continuously fed to convey in the plasticising cylinder 32 of extruder 26 with the state of strip
Fiber-reinforced resin 16 is prepared in the base resin of midway, after cooling in cooling bath 27, carries out particle using pelletizer 28
Change.
Next, using in the device of Fig. 2 injection (mo(u)lding) machine 30 and mold 31 above-mentioned particle is injection moulded, make
Make the resin-formed body 4 of shape same as Example 1, identical size.That is, above-mentioned particle is supplied to injection (mo(u)lding) machine 30,
29 internal plasticization of plasticising cylinder of injection (mo(u)lding) machine 30, while being filled into empty in the mold for the mold 31 being connect with the front end of plasticising cylinder 29
Between and be shaped to resin-formed body 4.
Then by molding resin-formed body 4 device that is housed in Figure 1B chamber 22 in, depressurized in by chamber 22
To vacuum degree 1Pa or less, is heated 10 hours at 220 DEG C and manufacture resin-formed body 4.It will similarly to Example 3
The example that the molding resin-formed body 4 in ground does not heat under reduced pressure is as comparative example 3.
Comparative example 4 is illustrated below.Use the staple fiber shape for cooperating fibre length about 0.3mm in base resin
Reinforcing fiber, and utilize the particle of staple fiber compound made of kneading disk of twin shaft kneading machine etc. under high temperature and pressure mixing
As fiber-reinforced resin, in addition to this, it is shaped to resin-formed body 4 similarly to Example 3.Then by the molding resin of institute
Formed body 4 is housed in the chamber 22 of the device of Figure 1B, in the state of being decompressed to vacuum degree 1Pa or less in by chamber 22,
It is heated 10 hours at 220 DEG C and manufactures resin-formed body 4.
Base resin is PA66, and reinforcing fiber is the glass fibre (tensile modulus of elasticity: 65~80GPa) of usual intensity,
The ratio of glass fibre is 30 mass % of the total amount of glass fibre and base resin.Will in the same manner as comparative example 4 molding tree
The example that rouge formed body 4 does not heat under reduced pressure is as comparative example 5.
The reinforcing fiber in the resin-formed body manufactured in the various embodiments described above, comparative example is found out by following methods
Number average fiber length (mm).That is, making resin-formed body exist using the hot thermogravimetric amount of differential while measurement device (TG-DTA)
After burning under nitrogen and oxygen atmosphere, random extraction measures fibre length as the remaining glass fibre of residue, finds out it and counts mean value
As number average fiber length (mm).
The basis in resin-formed body manufactured in the various embodiments described above, comparative example by the measurement of TFA derivatization GPC method
The number-average molecular weight Mn of resin.The measuring method described below.Trifluoroacetic anhydride (TFA) is dissolved in organic solvent, trifluoro is made
Acetic acid solution.PA66 is added in trifluoroacetic acid solution, the amide groups of PA66 is made to carry out trifluoroacetic acid (TFA) derivatization.By TFA
Derivatization PA66 is dissolved in mobile phase, is measured with gel permeation chromatography (GPC).Detached peaks are examined with UV spectrometer
It surveys, by utilizing the number-average molecular weight for calculating base resin as the calibration curve of the polystyrene of the known molecular amount of standard sample
Mn.The relationship of the number average fiber length (mm) of reinforcing fiber and the number-average molecular weight Mn of base resin are shown in Fig. 3.Symbol in figure
Number difference is as described below.That is, for identical resin-formed body, the resin-formed body that will not heated in non-oxidizing atmosphere
It is indicated with the symbol of solid black, the white hollow of the resin-formed body the same symbol by heating is indicated.
◇: embodiment 1, ◆: comparative example 1
: embodiment 2, ■: comparative example 2
Zero: embodiment 3, ●: comparative example 3
△: comparative example 4, ▲: comparative example 5
As shown in Figure 3, it is known that any resin-formed body can make shape by heating in non-oxidizing atmosphere after molding
At the base resin molecular weight of resin-formed body.Moreover, knowing to continuously feed according in use containing reinforcing fiber
The rove of strip and the fiber-reinforced resin prepared be shaped to after resin-formed body in non-oxidizing atmosphere heated resin at
The Examples 1 to 3 of type body, can manufacture the resin of the base resin containing the long reinforcing fiber of fibre length and high molecular weight at
Type body.
It is made in each embodiment, comparative example according to the measurement of measuring method documented by ISO standards ISO527
The tensile strength for the resin-formed body (ISO multipurpose test film A type) made.As a result, as shown in Figure 4, it is known that any resin at
If heated in non-oxidizing atmosphere after the molding of type body, can not only make to form the basis of resin-formed body as described above
Resin molecular weight, but also base resin can be made closely sealed securely with reinforcing fiber.Moreover, continuously being supplied according to using
It is heated in non-oxidizing atmosphere after the fiber-reinforced resin molding prepared to the rove containing the strip of reinforcing fiber
Examples 1 to 3, it is known that compared with the Comparative Examples 1 to 5 of any composition for the condition for being unsatisfactory for Examples 1 to 3, can be improved tree
The tensile strength of rouge formed body.
By the resin-formed body manufactured in embodiment 1, comparative example 1,3,5 by thickness become several 10 μm in a manner of be sliced and
Make sample.Thrust test method using nano-hardness tester is implemented to each sample of production, measures base resin and reinforcing fiber
Interface shear strength.That is, it is fine to select the differently- oriented directivity multiple enhancings parallel with the thickness direction of sample from the sample of production
Dimension.It finds out and load progress is applied to the multiple reinforcing fibers selected in the thickness direction of sample in the pressure head using nano-hardness tester
The average value of the interface shear strength (MPa) found out when extrusion.Relative value when as a result the result of comparative example 1 is set as 100
Form be shown in Fig. 5.
According to Fig. 5 as a result, comparison for not heating the resin-formed body of manufacture in non-oxidizing atmosphere
For example 1,3,5, according to the sequence of following comparative example, the interface shear strength of base resin and reinforcing fiber is lower.
Using the comparative example 5 of the particle of staple fiber compound,
Use 3 and of comparative example containing the substantially particle of the reinforcing fiber of overall length
The fiber-reinforced resin prepared with the rove of the state of strip supply strip is directly filled into mold
Mold in space comparative example 1.
In addition, the state of the sample using micro- sem observation after thrust test, as a result in comparative example 5, in basic tree
Removing is not observed in rouge and the interface for the reinforcing fiber being extruded, but observes removing at above-mentioned interface in comparative example 1,3.
The reasons why as them, as previously described, it is believed that be prepared into the molding phase from fiber-reinforced resin
Between the pressure of mixing that applies, heat be sequentially reduced, the closing force of base resin and reinforcing fiber is lower in the order.With this phase
It is right, according to embodiment 1 as a result, by heating the resin-formed body of comparative example 1 in non-oxidizing atmosphere, can incite somebody to action
Base resin and the interface shear strength of reinforcing fiber improve to the comparative example 5 with the particle for using staple fiber compound it is same or
More than it.In addition, as a result in embodiment 1 the state of the sample using micro- sem observation after thrust test is not also observed
To the removing in base resin and the interface of reinforcing fiber seen in comparative example 1.Moreover, according to these as a result, leading to
It crosses and heats resin-formed body in non-oxidizing atmosphere, base resin can be made to react with reinforcing fiber and closely sealed securely.
In addition, as described above the interface shear strength of base resin and reinforcing fiber improve to 5 equal extent of comparative example
More than, and as shown in previous Fig. 3,
The fibre length of reinforcing fiber it is longer compared with comparative example 5 and
Base resin molecular weight compared with comparative example 5 and the heating in non-oxidizing atmosphere.
By above-mentioned synergy, specify as shown in figure 4, the tensile strength of the resin-formed body of embodiment 1 with than
It compares and greatly improves compared with example 5.
Claims (10)
1. a kind of manufacturing method of resin-formed body, the resin-formed body is increased by the fiber containing base resin and reinforcing fiber
Strong resin is constituted,
The manufacturing method includes following processes:
The rove of strip containing the reinforcing fiber is continuously fed to heat with the state of strip to make its increasing
The process for preparing the fiber-reinforced resin in the base resin of modeling；
The process for being shaped to the resin-formed body using the prepared fiber-reinforced resin；And
By the process that is heated in non-oxidizing atmosphere of the molding resin-formed body.
2. the manufacturing method of resin-formed body according to claim 1, wherein by the heating temperature of the resin-formed body
It is set as the fusing point of temperature that the functional group of the end of the base resin reacts more than or lower than the base resin
Temperature.
3. the manufacturing method of resin-formed body according to claim 1, wherein the non-oxidizing atmosphere is reduced atmosphere
At least one of with non-active gas atmosphere.
4. the manufacturing method of resin-formed body according to claim 2, wherein the non-oxidizing atmosphere is reduced atmosphere
At least one of with non-active gas atmosphere.
5. the manufacturing method of resin-formed body according to any one of claims 1 to 4, wherein continuously implement following
Process:
The process for preparing the fiber-reinforced resin using injection (mo(u)lding) machine and mold, the injection (mo(u)lding) machine include plasticising cylinder and
Supply unit, the plasticising cylinder heats while conveying the base resin to a direction makes its plasticising, the supply unit
The rove is continuously fed in the base resin of midway conveyed in the plasticising cylinder, the mold with it is described
The front end of the plasticising cylinder of injection (mo(u)lding) machine connects；And
The process that the fiber-reinforced resin is filled into space in the mold of the mold and is shaped to the resin-formed body.
6. the manufacturing method of resin-formed body according to claim 5, wherein supply reaction promoter from the supply unit
Into the base resin of the midway conveyed in the plasticising cylinder, the reaction promoter, which has, assists the base resin
The function of the reaction of the functional group of end.
7. the manufacturing method of resin-formed body according to any one of claims 1 to 4, wherein
Implement following processes: using the extruder comprising being plasticized cylinder, the rove continuously being supplied together with the base resin
It is given in the plasticising cylinder and prepares the fiber-reinforced resin, the plasticising cylinder is on one side by the base resin to a direction
Heating makes its plasticising on one side for conveying, also,
Implement following processes: using the injection (mo(u)lding) machine comprising being plasticized cylinder and with before the plasticising cylinder of the injection (mo(u)lding) machine
Hold connection mold, will be filled into the die space of the mold with the standby fiber-reinforced resin of the extrusion mechanism and
It is shaped to the resin-formed body, the plasticising cylinder heats while conveying the fiber-reinforced resin to a direction to be made
It is plasticized.
8. the manufacturing method of resin-formed body according to claim 7, wherein the extruder includes supply unit, described
In the base resin for the midway that the rove is continuously fed to convey in the plasticising cylinder by supply unit.
9. the manufacturing method of resin-formed body according to claim 7, wherein including will be from described in the extruder
After the fiber-reinforced resin of the front end extrusion molding of plasticising cylinder is granulated, by the fiber reinforcement tree through granulating
The process that rouge is supplied to the injection (mo(u)lding) machine.
10. the manufacturing method of resin-formed body according to claim 8, wherein including will be from the institute of the extruder
State plasticising cylinder front end extrusion molding the fiber-reinforced resin granulated after, by the fiber reinforcement through granulating
The process that resin is supplied to the injection (mo(u)lding) machine.
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| JP2017-222838 | 2017-11-20 | ||
| JP2017222838 | 2017-11-20 | ||
| JP2018134092A JP2019093700A (en) | 2017-11-20 | 2018-07-17 | Method for producing resin molded body |
| JP2018-134092 | 2018-07-17 |
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| CN109940778A true CN109940778A (en) | 2019-06-28 |
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| JP7230832B2 (en) | 2020-01-17 | 2023-03-01 | トヨタ自動車株式会社 | METHOD AND APPARATUS FOR MANUFACTURING FIBER REINFORCED RESIN MOLDED PRODUCTS |
| CN111844623B (en) * | 2020-07-24 | 2022-04-12 | 广东伊之密精密机械股份有限公司 | Device for injection molding of long glass fibers |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1130562A (en) * | 1994-10-14 | 1996-09-11 | 株式会社神户制钢所 | Injection molding process and injection molding unit for long fiber-reinforced thermoplastic resin |
| CN101151143A (en) * | 2005-04-01 | 2008-03-26 | 贝洱两合公司 | Method for producing a plastic part and device comprising said plastic part |
| CN103608386A (en) * | 2011-06-24 | 2014-02-26 | 东丽株式会社 | Molding material, molding method using same, method for producing molding material, and method for producing fiber-reinforced composite material |
| CN105008108A (en) * | 2013-04-15 | 2015-10-28 | 三菱重工塑胶科技股份有限公司 | Injection molding apparatus and injection molding method |
-
2018
- 2018-07-17 JP JP2018134092A patent/JP2019093700A/en active Pending
- 2018-11-19 CN CN201811374400.3A patent/CN109940778A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1130562A (en) * | 1994-10-14 | 1996-09-11 | 株式会社神户制钢所 | Injection molding process and injection molding unit for long fiber-reinforced thermoplastic resin |
| CN101151143A (en) * | 2005-04-01 | 2008-03-26 | 贝洱两合公司 | Method for producing a plastic part and device comprising said plastic part |
| CN103608386A (en) * | 2011-06-24 | 2014-02-26 | 东丽株式会社 | Molding material, molding method using same, method for producing molding material, and method for producing fiber-reinforced composite material |
| CN105008108A (en) * | 2013-04-15 | 2015-10-28 | 三菱重工塑胶科技股份有限公司 | Injection molding apparatus and injection molding method |
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