TW201103732A - Method for producing injection-molded article - Google Patents

Abstract

Disclosed is a molding technique, which is for obtaining a molded article having an excellent appearance, and which suppresses fibrillization of the surface of the injection-molded article even if the liquid-crystal resin composition is ultrasonically cleaned. Specifically, disclosed is a molding technique which can be performed even under the condition that the mold temperature is no greater than 100 C. During injection molding of a liquid-crystal resin composition, when a mold with an thermal insulation layer formed on the inner surface of the mold is used, with the thickness of the thermal insulation layer being t1 ([μ]m), the injection speed being S (mm/sec), the thickness of the injection-molded article being t2 (mm), and the die temperature being T ( C), injection molding is performed under molding conditions that fulfill a particular relationship. Preferably, molding is performed with a mold temperature that is no greater than 100 C.

Description

[Technical Field] The present invention relates to a method for producing injection molding using a liquid crystalline resin composition. People [Prior Art]: A group of plastics called "Engineering Plastics" has high strength and can replace metal parts. The towel, a group of plastics commonly referred to as "liquid crystalline resin", is fused while maintaining the crystal structure. Based on the crystal structure, the degree _ degree is one of the characteristics of the liquid crystalline resin. Further, since the liquid crystal resin does not largely change in the crystal structure at the time of solidification, the product change during melting and curing is small. As a result, the liquid crystalline resin has an advantage that the molding shrinkage is small and the dimensional accuracy of the molded article is excellent. In order to utilize the advantages of high strength and excellent dimensional accuracy as described above, liquid crystal trees and products have evolved into precision machine parts. However, in the case of precision harpsichords, only a small amount of garbage, dust, etc. will affect the performance of the machine. Parts such as precision machines and optical equipment, such as parts for cameras and camera sets, usually use water. Wait for the ultrasonic washing process to remove small garbage, oil, dust, etc. attached to the surface of the part. However, the molded article formed of the liquid crystalline resin composition is relatively fibrillated because the molecular alignment is particularly large at the surface portion. Therefore, if the surface of the molded article is peeled off, it becomes a falling object (the cause of the garbage: the household is used, because the generation of the bank or the like causes a problem, the molded article formed of the liquid crystalline resin composition is subjected to ultrasonic cleaning. In the case of the above-mentioned garbage, the occurrence of the above-mentioned garbage or the like is particularly large because the molecular alignment on the surface of the molded article is particularly large. Therefore, the resin molded article having improved surface properties is disclosed. A resin-formed crucible containing a liquid crystalline polymer and a fibrous filler is characterized in that it has a surface (a) degree of Ra 値 as measured by a specific surface tape peeling test, and is in the following planar portion (Patent Document 1). The method described in Document 1 is useful for parts of electrical and electronic equipment or optical equipment, and can prevent the generation of surface particles (foreign matter). Accordingly, the surface characteristics can be improved by using the technique described in Patent Document g1. Λ',: As described in the example of Patent Document 1, in Patent Document 1, "foreign matter generation J means that when it is stirred in pure water# When the surface was subjected to washing and washing for 1 minute, the surface properties which were carried out according to the method described in the patent document were improved, and the fibrillation suppression at the time of ultrasonic cleaning was not satisfactory. In the method of the above-mentioned Patent Document 1, when a resin molded article is exposed to a severe condition such as ultrasonic cleaning, a large amount of foreign matter is generated. Further, in Patent Document 1, in order to suppress the generation of the garbage or the like, It is preferable that the mold temperature at the time of molding is high. Actually, the embodiment of Patent Document i is formed under the condition of the mold temperature of 1 3 01: When the condition of the mold temperature is set to exceed 丨0 (temperature of rc, It is not possible to use water for temperature defrosting, but it is necessary to use oil for temperature adjustment. Therefore, from the viewpoint of easy production from injection to open ν, it is eager to form a strip of 201103732 which is at a mold temperature of 10 〇t or less. Because the injection molded article is particularly large, if it is easy to align the knife at the surface portion, it will be fluffed. Therefore, the surface of the fibrillated ultrasonic cleaning The surface property improvement technique is applied to the surface of the injection molded article, and the surface of the molded article described above is peeled off, so that the liquid crystal resin component is also desirable, and the surface is fluffy and falling. The appearance of the injection-molded article is impaired. The appearance of the injection is formed by injection molding. [Provisional Technical Documents] [Patent Document] Japanese Patent Laid-Open Publication No. 2008-239950 (Patent Document 1) [Problem to be Solved] The present invention has been made to solve the above problems, and an object of the invention is to provide fibrillation on the surface of an injection molded article even when the liquid B曰H secret fat composition is subjected to ultrasonic cleaning. A molding technique having an excellent appearance molded article, in particular, a molding technique that can be carried out even under the conditions of a mold temperature of 1 Torr. (Means for Solving the Problem) The inventors of the present invention have made intensive studies to solve the above problems. As a result, at the time of injection molding of the liquid crystalline resin composition, a mold ′ in which a heat insulating layer was formed on the inner surface of the mold was used, and the thickness tl of the heat insulating layer, the injection speed s, and

L 201103732 When the thickness of the molded article is t?, Α, 、, and the temperature τ is obtained, the present invention is carried out by forming conditions according to a molding condition satisfying a specific relationship. The present invention provides the following: "The method for producing an injection molded article" is such that α ^ is generated during injection molding of a liquid crystalline resin composition. ^ The inner surface of the tool has a mold that forms a heat insulating layer, and is not thicker than the heat insulating layer. (From 111), the injection speed S (_/sec), and the thickness of the injection molding mouth t2 (mm) 悮8' In the case of T(C), injection molding is carried out in accordance with the molding conditions satisfying the following formula (I).

(I) The method for producing an injection-molded article of the above-mentioned (1), wherein the injection molding is carried out in accordance with the molding conditions satisfying the following formula (1)). The method for producing an injection molded article according to the above aspect, wherein the thermal insulation layer has a thermal conductivity of 5 W/m. (4) The method of enriching the injection-molded article of any of the above-mentioned items (1) to (3), wherein the above-mentioned heat insulating layer contains a polyimide resin. (5) The method of producing an injection-molded article according to any one of the preceding claims, wherein the mold temperature is 1 001: or less. (Effect of the invention) The molded article is produced by peeling off even if it is peeled off. According to the method, the shape "can be easily applied to the ultrasonic cleaning according to the manufacturing method of the present invention" is still not caused by the surface falling object (garbage) of the molded article. Therefore, the present invention is used by the present invention. Injection of precision machine, optical machine, etc. 6 201103732 超 Ultrasonic cleaning 俾 俾 效率 佳 佳 佳 拉 拉 U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U The product has excellent externality, and the benefit-Japan-K-method is obtained from the injection molded article. In the case of the easy-to-peel stripping, it is possible to maintain a beautiful appearance. The manufacturing method of the ex-situ can be carried out according to the conditions of the grip, the field, the yoke, and the following conditions. In the case of a chess piece, the degree of adjustment can be carried out by using water instead of oil. The excellent injection molded article can be easily obtained. [Embodiment] Hereinafter, the present invention will be described in detail. However, the present invention is not limited to the following embodiments, and may be appropriately modified and implemented in the object of the present invention. The present invention is characterized in that the inner surface of the mold for injection molding of the liquid crystalline resin composition is formed. The mold of the heat insulating layer, and when it is set as the thickness of the heat insulating layer tium), the injection speed s (_/sec), the thickness of the injection molded product: 2 (off), and the mold temperature T(t), the shaped strip satisfying the specific relationship The cow is injection molded. Hereinafter, the present invention will be described in the order of the method for producing a liquid crystalline resin composition to a molded article. <Liquid Crystal Resin Composition> In the method for producing an injection molded article of the present invention, all liquid crystal resin compositions containing liquid crystal sapphire can be used. [Liquid Crystal Resin] 201103732 The term "liquid crystal resin" means a melt-processable polymer having a property of forming an optical anisotropic refining phase. The nature of the anisotropic melt phase can be confirmed by a conventional polarizing inspection method using a crossed polarizer. Specifically, the confirmation of the anisotropic melt phase was performed using a Le i tz polarizing microscope. The molten sample placed on the Leitz heating stage was observed under a nitrogen atmosphere at a magnification of 40 times. The liquid crystalline resin which can be suitably used in the present invention is optically anisotropic even when it is inspected between the orthogonal polarizers, even if, for example, in the molten static state, the polarized light can be normally transmitted. The liquid crystalline resin is not particularly limited, and is preferably an aromatic polyester or an aromatic polyester decylamine, and a polyester partially containing an aromatic polyester or an aromatic polyester decylamine in the same molecular chain. It is also within this range. These are used in a concentration of 〇 1% by weight in a pentafluorophenol at 60 ° C, preferably at least about 2 〇 dl / g, more preferably 2. 〇 ~ 1 〇. 〇 dl /g logarithmic viscosity (IV). The aromatic polyester or aromatic decylamine which is suitable for use as a liquid crystalline resin in the present invention is particularly preferably selected from the group consisting of aromatic carboxylic acid, aromatic transamine, and aromatic diamine. A compound of at least U or more is selected as the constituent component and contains an aromatic polysulfonate or an aromatic polyacetamide. More examples of the system can be exemplified as follows: (1) mainly from the i- or two kinds of aromatic mercaptocarboxylic acids and derivatives thereof (2) the main sin (, _ a) aromatic hydroxycarboxylic acid and its derivatives 1 or more or more, one or two of the dicarboxylic acid, the alicyclic dicarboxylic acid, and the derivative thereof are discarded, and (c) an aromatic diol or an alicyclic diol 201103732 Or two or more; at least one of the constituent aliphatic diols and derivatives thereof; (3) mainly consisting of: (a) Guan ~ one or two of citron hydroxycarboxylic acids and derivatives thereof The above '(b) aromatic, n ^ ', one or more of a working earth amine, a scented diamine, and a derivative thereof, and a sulfonium carboxylic acid or an alicyclic dicarboxylic acid One of the acid and its derivatives, 戋2 4 Z or more, constitutes a polyester decylamine; (4) mainly consists of: (4) an aromatic thiol and its μ! One or more of two or more kinds, (8) aromatic hydroxylamines, aromatic diamines and derivatives thereof, and (c) aromatic dicarboxylic acids, alicyclic dicarboxylic acids, and derivatives thereof A polyester decylamine or the like which is composed of at least one or two or more of (4) an aromatic diol, a lipo-isolated alcohol, an aliphatic diol, and a derivative thereof. Further, a molecular weight modifier may be used in combination with the above-mentioned constituent components as needed. Preferred examples of the specific compound which can be applied to the liquid crystalline resin of the present invention include, for example, p-hydroxybenzoic acid, aromatic quinone dicarboxylic acid such as 6-hydroxy-2-naphthoic acid, and 2,6-dihydroxynaphthalene. An aromatic diol such as a compound represented by the following general formula (A) and the following general formula (B); 1,4-dihydroxynaphthalene, 4,4'-dihydroxybiphenyl, hydrogen, resorcin; An aromatic dicarboxylic acid such as a compound represented by the following formula (C): stearic acid, isophthalic acid, 4,4,~diphenyldicarboxylic acid, 2,6-naphthalenedicarboxylic acid; An aromatic amine such as an aminophenol or a p-phenylenediamine.

(A) (X: a group selected from an alkyl group (CBu C4), an alkylene group, -0-, -SO-, -S〇2-, and a c〇-) 201103732

HOOC (Y: a base selected from (B) (C) - (CH2)n - (n = bu 4), - 〇 (CH2) n 〇 _ (n = b4).) [Other components] Α The present invention In the liquid crystal resin composition, a pigment such as another resin, a nucleating agent, carbon black, or an inorganic calcined pigment, an antioxidant, a stabilizer, a plasticizer, a slip agent, or the like may be added without impairing the effects of the present invention. A composition which imparts a desired property, such as a release agent, a flame retardant, and the like, is also included in the liquid crystalline resin composition used in the present invention. <Manufacturing Method of Injection Molded Article> The method for producing an injection molded article of the present invention is to use a mold which forms a heat insulating layer on the inner surface of the mold during injection molding of the liquid crystal resin composition, and is used as a heat insulating layer thickness U), the injection speed S (_/sec), the thickness of the injection molded article t2 (mm), and the mold temperature T(t) are injection-molded in accordance with the molding conditions satisfying the relationship of the following formula. (t 1 XS) /t 2 + Τ^ι 〇〇〇 . . . (Ι) [Mold] In the method of producing an injection molded article of the present invention, a heat insulating layer is formed on the inner side surface of the mold. Mold. (4) The heat insulating layer formed on the surface of the J in the mold is difficult to be solidified in the liquid crystal resin in the mold 1 # @ 4 and near the surface. As a result, it is possible to suppress the resin composition on the surface of the mold from 201103732 to the cured resin composition, and the resin composition contained in the resin composition before curing is stretched, resulting in a large knife alignment on the surface of the molded article. . 7 In the inner surface of the mold, the 形成 4 4 山 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、

No special restrictions. Further, in the inner surface of the inner surface of the 槿 I. „. The manufacturing method of the molded article of the Taiyue Moon injection molding product ^ V; 〇 而 至少 至少 至少 至少 至少 至少 至少 至少 所需 所需 所需 所需 所需 所需 所需 所需 所需 所需 所需 = = = = = = = = = = = = = = = = = = = = (tl) is as described later, and is added before the adjustment, and the remaining amount of the basin is not particularly limited as long as it satisfies the above formula (1). The thickness of the heat insulating layer formed on the surface can be both in the inner surface. The thickness of the layer is not equal to 3; if the degree is different, then the m brother' will set the average thickness to ti. Furthermore, the inner surface of the puller is shaped below wm.K. By the heat insulation layer: the heat of the layer It is preferable that the formation of the molded article is excellent when it is easy to obtain, even if it is adjusted in the above-mentioned range by the following model, 0曰, ', ', and the ultrasonic molding is performed. 75 does not peel off the 'lighter & gauge injection into 4. Refers to the example of the above-mentioned thermal conductivity of the person's because of the injection molding, in the case of crystallized resin composition, due to... 'The heat inside the high temperature liquid will flow into the inside. The hot layer must be wounded and bearable. In the case of the mold of the present invention, the inner surface of the mold used for the production of the injection molded article f S] 11 201103732 The heat insulating layer formed by the surface is preferably a polyimine resin. The reason is the heat of the polyimine tree. The conductivity is 5 W/jn·Κ or less, and has heat resistance which is sufficiently absorbed by the inter-planting at the time of injection molding. Specific examples of the polyimine resin which can be used include, for example, pyromellitic acid (pMDA) system. Polyimine, biphenyl tetrakis, chitosan, polyanisole using trimellitic acid, bis-butenylene-imide resin (bis-xetylenediamine/three哄, etc.), diphenyl ketone tetracarboxylic acid polyimine, acetylene terminal polyimide, thermoplastic polyamine, and more preferably a heat insulating layer composed of a polyimide resin. A preferred method other than the imine resin is, for example, a vinyl resin. The method of forming the heat insulating layer on the inner surface of the mold is not particularly limited. For example, it is preferred to form a heat insulating layer on the inner surface of the mold by the following method. For example, a solution of two molecules of precursors such as a poly-imine precursor which forms a polymer heat insulating layer will be taken. It is applied to the surface of the mold, heated to evaporate the solvent, and then superheated to polymerize, thereby forming a heat insulating layer such as a polyimide film or a monomer for heat-resistant germanium molecules, such as a pyromellitic acid needle. 4, 4-diaminodiphenyl is subjected to a vapor deposition polymerization method; or a related planar shape mold, a suitable adhesion method for a polymer thermal insulation film or an adhesive tape-like polymer thermal insulation film 'adhered to a desired portion of the mold The formation of the adiabatic method can also form a polyimide film, and a chromium (Cr) film or a titanium nitride (TiN) film for a metal-based hard film can be formed on the surface. [Forming conditions] This month, injection molding In the method for producing a product, when the heat-dissipating layer thickness-emitting speed S (mm/sec) and the injection-molded article thickness 12 201103732 t2 (_) and the mold temperature TCc are set, the injection molding is carried out under the conditions. The molding (t 1 XS) / t2 + T ^ i 〇〇〇 $ which satisfies the relationship of the following formula (I) is produced by the above-described conditions, and in the obtained injection molded article, At least the surface of the molded article has a boundary between the surface layer and the surface layer. The surface peeling of the injection molded article may become the peeling of the surface layer formed on the surface layer, but the present invention can attain that the surface layer has at least a portion of the surface of the molded article which has no surface layer to be opened. . As a result, it is possible to obtain a high-quality injection molded article which is excellent in appearance and which does not have surface peeling even if ultrasonic waves are applied first. The injection-molded article obtained by the production method of the present invention is characterized in that a part of V is not at the boundary between the surface layer and the surface layer of the surface of the molded article. As a result of obtaining such an injection molded article, the effect of suppressing peeling of the surface of the injection molded article is remarkably improved. In the meantime, it is estimated that the surface of the molded article has a very small amount of exfoliation and an injection molded article having an excellent appearance, and it is possible to prevent the liquid crystalline resin composition flowing into the mold from solidifying immediately on the surface of the mold, and to suppress the cured resin composition. The molecules causing the resin composition portion before curing are stretched, resulting in a large molecular orientation of the surface of the molded article. As described above, the heat insulating layer has a function of suppressing the solidification of the resin composition on the surface of the mold immediately when the liquid crystalline resin composition in the molten state is introduced into the mold. By increasing the injection speed, the time required to fill the resin composition in the mold can be shortened. In other words, the liquid crystal resin composition in the mold can be filled in a stage where the liquid crystal resin composition has not been excessively cured. As a result / 13 201103732 叮 suppression port cured resin composition 'The molecules of the resin composition portion before curing are stretched, resulting in a large molecular orientation on the surface of the molded article. If the thickness of the injection molded article is too large, it takes time to fill the liquid crystalline resin composition in the mold. Therefore, when the thickness of the injection-molded article is too large, the resin composition of the cured resin composition tends to be stretched, and the molecular alignment of the surface of the molded article becomes large. By setting the mold temperature τ, the liquid crystal resin composition in the vicinity of the inner side surface of the mold can be made particularly slow. As a result, it is possible to suppress the phenomenon that the molecules of the resin composition before curing are stretched due to the cured resin composition, and the molecular alignment on the surface of the molded article becomes large. The present invention is characterized in that the method of satisfying the above formula (1) is found by the thickness tl (/zm) of the heat insulating layer, the ejection speed S (mm/sec), the mold temperature τ (π ), and the thickness t2 (_) of the injection molded article. By adjusting, the boundary between the surface layer and the surface layer on the surface of the injection molded article disappears. Then, in the present invention, by adjusting the injection speed S (mm/sec), the thickness of the heat insulating layer tiu, and the mold temperature Trc, it is possible to manufacture various shapes (especially when t2 is thick). The molded article is injected. The reason is that at least a part of the boundary between the surface layer and the surface layer of the injection molded article does not exist if the above formula (I) is satisfied. Further, by forming the molding condition satisfying the following formula (11) In the case of injection molding, surface peeling is less likely to occur, and an injection-molded article having an extremely excellent appearance can be obtained by performing injection molding under the condition that the following formula (1) is satisfied, and it is easy to obtain a boundary between the surface layer and the surface layer. 201103732 Molded article. The following is a description of the manufacturing conditions of the manufacturing method of the present invention (t 1XS) / t 2 + t^2〇〇〇·.. (!!) First, 'for the absolute bed + 1 Γ, , /v *, and 'increasing degree tl (/zm) will be described. The thickness of the insulating layer 11 can be adjusted as long as it satisfies the above i "τ>μ七# & 疋上式(I), There is no particular limitation on the thickness of the product. The type of the resin composition is different from the opening of the molded article; ^ TL ^ field β Φ is found to be different, but in the manufacturing method of the present invention, it is preferable to adjust the thickness of the heat insulating layer to b...000 (four). It is preferable to adjust the thickness of the heat insulating layer to 1" or more to obtain a sufficient heat insulating effect, and it is preferable that the soot & thin and flat and adjusted to 1 000 // in or less is the reason for the accuracy of the molded article. good.争# μ麻@ 甸平 and live better insulation layer thickness tl system 10"m to 300 /z m 〇 Next, the injection speed S (IM1/Sec) will be explained. The relevant injection speed S is also the thickness of the heat insulating layer t1, and the present invention is different in that it is adjusted to satisfy the above formula (I) depending on the type of the liquid crystalline resin composition to be used, the shape of the injection molded article, and the like. In the manufacturing method, it is preferable to adjust the injection speed S to a range of 20 mm/sec to 10 〇〇〇/sec. By adjusting the injection speed to 2 〇mm/sec or more, it is possible to prevent the pause, and therefore it is preferable to prevent the jetting by adjusting the injection speed to 10 mm/sec or less. It is preferred. Better injection speeds range from 50mm/sec to 500mm/sec. Next, the mold temperature T (°C) will be described. The relevant mold temperature τ is also the same as the thickness of the above-mentioned heat insulating layer t1, etc., and may be adjusted so as to satisfy the above formula (I). Ejected according to the type of liquid crystal resin composition used

形状S J 15 201103732 The shape and the like of the shape differ, but in the manufacturing method of the present invention, it is preferred to adjust the mold temperature τ to less than or less. By setting the mold temperature τ to be less than 100 C, the temperature of the mold can be adjusted by using water, and the π Β 射 injection molded article can be easily obtained. The temperature range of the mold is 501 to 10 (TC. The thickness of the heat insulating layer tl, the injection speed s, and the adjustment of the mold temperature τ can be adjusted in a wide range by the thickness t2 of the injection molded article. 'In the condition satisfying the above formula (1), the thickness U of the injection molded article can be adjusted to 0.2 to 10. The condition satisfying the above formula (1) can be adjusted to 〇.2_ to 5. In particular, the thickness of the injection molded article is within the range of 〇2 to 3, which is more likely to occur, but by forming according to the manufacturing method of the present invention, it is possible to easily obtain a surface having no surface peeling and having an excellent appearance. Quality shot molded product. [Injection Molded Article] When the liquid crystalline resin composition is molded, it has a multilayer structure. The H shows the multilayer of the injection molded article obtained in accordance with the production method of the present invention = the central portion of the crucible to the surface portion). As shown in the figure of the heart, the injection method obtained by the manufacturing method of the above-mentioned method shows that at least a part of the surface of the molded article does not have a boundary between the surface layer and the surface layer. Therefore, it is: the film obtained according to the manufacturing method of the present invention, and the like, as shown in the figure i (8), the portion of the surface-made 7-wave wash-face peeling is reduced. On the other hand, as shown in Fig. 2, the method of obtaining the multilayer structure of the injection molded article is as shown in Fig. 2(a), and is formed by injection molding from::: to the surface portion). There is a surface layer on the entire surface of ^ασ. In the case of ultrasonic cleaning such as the hearing of the molded article obtained by the manufacturing method according to the conventional technique, as shown in the second (b), the entire surface may be formed. Then, as shown in Fig. 3, the multilayer structure (from the center portion to the surface portion) of the injection-molded article manufactured under the conditions of the modification of μ and ν 1) satisfying the above formula 丨). As shown in Fig. 3, in the injection molded article obtained by the production method of the present invention, the injection molded article produced under the conditions of the above formula (II) has a tendency to completely disappear from the boundary between the surface layer and the surface layer. Execution: Injection molding, etc., where the surface is peeled off and the surface peeling is extremely difficult to occur. As described above, according to the injection molded article obtained by the production method of the present invention, even if ultrasonic cleaning is performed, surface peeling does not occur and the appearance is excellent. Further, by setting the mold temperature to 1 〇〇〇c or less, high-quality injection molded articles can be easily obtained. [Examples] Hereinafter, the present invention will be described in more detail based on the examples, but the present invention is not limited by the examples. <Material>

Vectra (registered trademark) E130i" glass fiber melting point 335 ° C, melt viscosity 40 Pa · s (poly liquid crystalline resin 1: dimensional 30% by mass filled material plastic Co., Ltd.) Insulation layer forming material 1: Polyimide resin tape (manufactured by Sumitomo 3M Co., Ltd.), thermal conductivity 〇.2W/m · κ 矣 热 hot layer forming material 2: polyimine resin varnish (manufactured by Fine CHEMICAL JAPAN), thermal conductivity 〇. 2W/m · κ 17 201103732

Insulation layer forming material 3: Polyimine resin film (manufactured by TORAY·DUPON Co., Ltd.), thermal conductivity 〇. 2W/m · K The thermal conductivity of the above polyimine resin is measured by laser flash method. The specific gravity was determined according to the Archimedes method and calculated according to the DSC specific heat. &lt;Example 1&gt; Using the liquid crystalline resin 1 as a material for molding, the heat insulating layer forming material 1 was adhered to the mold cavity surface of a flat plate forming mold having a width of 2 mm mm and a length of 50 mm x a thickness of 5 mm. The injection molding was carried out by molding according to the molding conditions such as the injection speed and the mold temperature in Table 1. Further, the conditions other than the molding conditions shown in the table are as follows. [Forming conditions] Extrusion set temperature: 350. (: the number of revolutions of the screw: 150 rpm &lt;Example 2 &gt; Using the liquid crystalline resin 1 as a material for molding, the mold cavity surface of the flat-plate molding die of 40 jobs&gt; The heat insulating layer forming material 2' is subjected to a small phase baking at 25 G ° C, and then the polyimide surface is ground, such as yttrium, and after being adjusted to the thickness of the insulating layer in the surface, the ejection speed in Table 1, The mold temperature was applied to $, and the injection molded article was obtained. Further, the molding conditions other than those shown in Table 1 were the same as those in Example b &lt;Example 3 &gt; In the same manner as in the production of the injection-molded article 1, the molding conditions other than those shown in Table 18, 201103732 1 were as in Example i. <Example 4 &gt; Using a liquid crystalline resin as a material for molding was in the ISO standard. On the cavity surface of the cookware of the β-type test piece, the heat-insulating layer forming material 3' is adhered by a double-sided tape, and then the injection speed is formed according to the injection speed in the table 1 to obtain an injection molded article. The molding conditions other than those in Table 1 are as in Example 1. In the same manner as in the fourth embodiment except that the molding conditions were changed to the conditions shown in Table 1, the molding conditions other than the production of the injection molded article 1 were the same as in the example 1q &lt; Comparative Example 1 &gt; The rest of the conditions are the same as those in the same manner as in the fourth embodiment except that the molding conditions are changed to the conditions shown in Table i, and the molding conditions other than the production of the injection molded article 1 are as in the examples. (Comparative Example 2 &gt; Except that no depletion layer + formation or thermal layer was formed in the mold, the production of the injection-molded article was carried out in the same manner as in the example. <Comparative Example 3 &gt; The molding conditions were changed to the conditions of the surface, and the same method as in Comparative Example 2 was used to carry out the production of the injection molded article. The molding conditions other than the above were the same as in the example [. &lt; Evaluation of the molded article&gt; The relevant examples and comparative examples were shot. Forming σ°, performing a checkerboard test, 201103732 evaluation, ultrasonic cleaning test evaluation. [Checkerboard test evaluation] According to the method according to J IS K5400 Evaluation The evaluation results are shown in Table 1 using a number of peeling grids in a 100 mm grid of 1 mm □. The results of the evaluation are shown in Table 1. [Ultrasonic cleaning test] The injection molded articles of the examples and the comparative examples were immersed in water to carry out 1 Minutes of ultrasonic cleaning, the fibrillation of the surface was regarded as the whitening phenomenon of the surface, and the presence or absence of fibrillation was evaluated. The evaluation results are shown in Table 1. [Table 1]

It is known from Table 1 that in accordance with the M product of the present invention, the peeling surface peeling production report score L which is obtained by the method of the "sweetness of the sister" of the sister-in-law "Zanyue" is more difficult to send W Luo if shape. According to this, because Li Wei, 〇 ^ ^ obtained by the method of the present invention, the body + 屮 者 士 主 , , , , , , , , , , , , 。 。 。 。 。 。 。 The Dan's are known from Table 1, and only the fine examples 1 to 3, 5 can be obtained in the super 20 201103732 =: Γ no complete fibril occurrence. The embodiment &quot;, the surface of the injection molded article is not present between the surface layer and the surface layer, and the surface fibrillation occurs in the case of Example 4, but the area of the surface is two, and the fibrils formed on the surface of the molded article are two. The area where the occurrence occurred. Therefore, it has been confirmed in Example 4 that some of them have boundaries between the surface layer and the surface layer. The local month's manufacturing method confirms that even the mold temperature is just right. Under the conditions of c, high-quality injection molded articles can still be produced. From the results of the examples 3 and 5 and the results of the example 4, it was confirmed that the production of the injection-molded article was carried out under the conditions satisfying the above formula (1)), and the boundary between the surface layer and the surface layer was completely absent. Injection molding port 〇 0 [Brief Description of the Drawings] Figs. 1(a) and (b) are diagrams showing a multilayer structure of an injection molded article obtained by the present invention + a manufacturing method according to the specification. The second (a) and (b) drawings obtained by the manufacturing method of the technique are obtained by conventionally forming a multilayer structure of a molded article. Injection molding for production Fig. 3 is a multilayer structure diagram of a condition satisfying the following formula (11). Main component symbol description Μ 21

Claims (1)

201103732 VII. Patent application scope: 1. A method for producing an injection molded article, in which a liquid crystal resin composition is ejected into a size of $n4r. &amp; 4' using a mold having a heat insulating layer on the inner surface of the mold; When tl (/zm), injection speed s (mni/sec), thickness of injection molded article t2 (mm), and mold temperature ,, injection molding is performed according to the molding conditions satisfying the following formula (I): ^ 1 xs) / t 2 + τ&gt; 1 Ο 〇〇 . . 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. T2 + T^2〇〇〇. - . (I η Among them, 3, such as the manufacturer of the injection molded article of the patent application scope 帛i', the thermal conductivity of the above thermal insulation layer is 5w/ni · κ or less. The manufacturer of the injection molded article of the Patent Co., Ltd. is a manufacturer of the injection molded article, and the above-mentioned heat insulating layer contains a polyimide resin. 5. The manufacturer of the injection molded article of the patent application 帛1 is a mold temperature system 1 Q 〇 Below °C. 22