CN101237977B

CN101237977B - Process and equipment for the production of thermosetting resin moldings

Info

Publication number: CN101237977B
Application number: CN2006800287965A
Authority: CN
Inventors: 荒川博史
Original assignee: THREELINE CO Ltd; YAMATOKAKO CO Ltd
Current assignee: THREELINE CO Ltd; YAMATOKAKO CO Ltd
Priority date: 2005-08-04
Filing date: 2006-07-31
Publication date: 2011-01-12
Anticipated expiration: 2026-07-31
Also published as: JP4229972B2; MY145153A; CN101237977A; TWI345523B; JPWO2007015565A1; TW200730326A; KR100978378B1; HK1119417A1; WO2007015565A1; KR20080038149A

Abstract

A process for the production of thermosetting resin moldings by molding and setting a thermosetting resin by use of concave and convex molds, which comprises conducting continuously the following steps (a) to (d): the step (a) of forming a substrate on the convex mold with the molds closed, the step (b) of subjecting the outside face of the substrate to at least single glaze coating, the step (c) of transferring the coated substrate to the concave mold side from the convex mold side, and the step (d) of subjecting the inside face of the substrate attached on the concave mold to at least single glaze coating and which can give, in one series of steps continuously, beautiful thermosetting resin moldings inhibited from deterioration with time caused by using, e.g., stain or gloss reduction; and equipment for the production of the moldings.

Description

The manufacture method of thermosetting resin moldings and device

Technical field

The present invention relates to the manufacture method and the device of thermosetting resin moldings, relate more specifically to use a kind of mould of forming by protruding halfbody mould and recessed halfbody mould, by series of steps continuously make thermosetting resin moldings, with to inner surface/outer surface plating with glaze and to inner surface/outer surface picture or pattern are set, particularly to the method and apparatus of described outer surface plating with glazed layer.

Background technology

In the past, thermosetting resin such as phenolic resins, melmac, Lauxite etc. are used in large quantities makes moulded products by shaping method to suppress, as tableware, cook utensil, food storage container, toilet articles etc.Usually by strengthening the thermosetting resin moulding material with reinforcement material such as slurry to wherein mixed.

But because the influence of this reinforcement material such as slurry, the moulded products that only comprises the thermosetting resin moulding material is easy to contaminated during use.Therefore, when forming glaze, common glaze at the surface-coated of moulded products only resinous (for example melamine formaldehyde resin).

Just general as step (1)～(7) of Fig. 1 shown in, show typical forming process: will use recessed halfbody mould 3 compression moulding thermosetting resins 1 (seeing step among Fig. 1 (1) and (2)) and the moulded products (base material) 4 of formation is bearing on the protruding halfbody mould 2; Then, shown in the step (5) and (6) of Fig. 1,, and use recessed halfbody mould 3 on the outer surface 6 of moulded products so that the coating of glaze 5 is shaped with glaze 5 coating.Like this, moulded products 7 is plated with glaze at outer surface, but surface 8 coating that do not form glaze 5 within it.

In addition, particularly be used under the situation of tableware etc., form picture on the surface of moulded products 7 or pattern usually can increase commercial value at this moulded products.Therefore, increase step (3)～(4) of Fig. 1, to form the ornamental special printing paper (foil paper) 9 of impregnated with resin and drying; In step (5)～(6) of Fig. 1, as mentioned above, use recessed halfbody mould 3 usually then to form the coating of glaze 5 thereon, with the deterioration that prevents to cause owing to glossiness reduction, pollution etc.

As mentioned above, not the kind of tube material how, as pottery or plastics, these dish and other shallow flat pattern tableware are decorated at the inner surface of placing food usually.Under the situation of thermosetting resin moldings, this surface is plated then with glaze.This glaze layer makes the adhesion place the food on the inner surface, pollution etc. be suppressed.

But, under the situation of other dark type tablewares such as teacup, dark base thickness china bowl, alms bowl, bassie, particularly under the situation of thermosetting resin moldings, common way is only to decorate common outer surface and form glaze thereon, and does not form the glaze layer on the inner surface that food contacts.Like this, because teacup and dark base thickness china bowl etc. directly contact on its base material with beverage, boheic acid and coffee etc. are attached thereto, thereby cause inner surface contaminated, and make the glossiness reduction.In addition, if use nylon cushion, washing agent etc. as powerful cleaning substance to remove spot, then inner surface will be scratched and become easier to be contaminated.In addition, when scrubbing tableware, become soft, often tableware is immersed in the hot water for a long time in order to make the swill that is bonded on the tableware.But will make swill etc. be bonded at the surface that does not have the glaze layer like this, thereby easier quilt stain.

In order to address this problem, two kinds of moulds are used in Japan Patent No.3398818 suggestion, at first to plate with glazed layer on the inner surface of moulded products, then half-formed goods are taken out from recessed halfbody mould, it is moved to protruding halfbody mould, and on the outer surface of moulded products, form glazed layer.But this method is taken out half-formed goods during the course and it is moved into the surface of second half mould (protruding halfbody mould), thereby makes production process become discontinuous.And, because half-formed goods will take out and allow of short duration shelving from the halfbody mould, it thereby will be cooled and begin contraction.The amount that this shape is shunk changes in time, therefore, when making single halfbody mould (protruding halfbody mould), needs to consider the amount of shrinking in manufacture process.But this amount of contraction is difficult to determine.Topmost problem is that for the deformation quantity that guarantees to determine, definite shelving the time for example set in restriction to some extent in operations for forming after taking out semi-finished product.In addition, with regard to thermal sclerosing material, in view of those skilled in the art knows multiple material is arranged, a constant molding shrinkage is determined in the manufacturing that therefore is difficult to every kind of material.Experience is depended in estimation to amount of contraction to a great extent, particularly makes the control of process become complicated, is easy to produce substandard products.Therefore, still there is room for improvement.

Summary of the invention

Therefore, in view of above-mentioned prior art, the object of the present invention is to provide and a kind ofly use single mould continuously to make the method and apparatus of thermosetting resin moldings by series of steps, it can suppress because the deterioration of using the pollution that causes, glossiness reduction etc. to cause.

The invention provides and a kind ofly be used to make the method for thermosetting resin moldings and make moulded products thus, described method comprises: use the molded and heat of solidification hardening resin of the mould of being made up of recessed halfbody mould and protruding halfbody mould, to make thermosetting resin moldings; During this period, carry out following series of steps continuously: (a) close die, and be molded into base material at (or in recessed halfbody mould) on the protruding halfbody mould; (b) at least once plate with glaze to the surface of described base material; (c) moulded products is moved to recessed halfbody die side (or move to protruding halfbody die side from recessed halfbody die side) from protruding halfbody die side; (d) at least once to attached to the surface plating of the moulded products of recessed halfbody mould (or protruding halfbody mould) side with glaze.

The invention provides a kind of manufacturing installation of thermosetting resin moldings and the moulded products of making from this device, described device comprises: the opening and closing device of raw material thermosetting resin feedway, the mould of forming by recessed halfbody mould and protruding halfbody mould, mould, the heating of mould and pressue device, be used to form glaze the glaze feedway, be used to form decoration the foil paper feedway, be arranged on movable plate on the mould and movable plate can with protruding halfbody mould and the connection of recessed halfbody mould or the fixture of separating.

Aspect the present invention one preferably, when opening mould, the part that moves the burr that can be by will be by molded base material the time form from the flash of cavity of moulded products is bearing in to be fixed on the movable plate on the halfbody mould and to second half mould side shifting moulded products and realizes in step (c).In the present invention, can also before forming glazed layer, provide the step that at least once forms a foil paper, and can on the surface that at least once be attached to the moulded products on second half mould before the formation glazed layer, form a foil paper on the surface of moulded products.In addition, can also be provided at the step that the surface that is attached to a moulded products on the halfbody mould forms a foil paper, and/or form the step of a foil paper on the surface that is attached to the moulded products on second half mould.In addition, can be provided in the step that the surface that is attached to a moulded products on the halfbody mould forms a foil paper, and/or between the base material on the surface that is attached to the moulded products on second half mould and glaze layer, form the step of a foil paper.

According to the manufacturing installation of thermosetting resin moldings of the present invention comprise raw material thermosetting resin feedway, opening and closing device, heating and the pressue device of the mould formed by recessed halfbody mould and protruding halfbody mould, mould, be used to form glaze the glaze feedway, be used to form decoration the foil paper feedway, be arranged on the movable plate on the mould and enable the fixture that connects or separate with movable plate, wherein, except that being arranged on the movable plate and fixture thereof on the mould hereinafter described, all parts all are conventional parts.

According to the present invention, when making tableware or other container or other moulded products, the single mold that open and close is made up of recessed halfbody mould and protruding halfbody mould also forms decoration or foil paper or form glaze at the compression moulding thermosetting resin.Therefore, by the recessed halfbody mould of same mould and the upper and lower settings of protruding halfbody mould, just can be by series of steps continuously at the outer surface of moulded products or inner surface forms ornamental or foil paper or glaze.

Description of drawings

The view specification of Fig. 1 is used to make the forming process of traditional thermosetting resin moldings;

The view specification of Fig. 2 is used to make the forming process of thermosetting resin moldings of the present invention;

The explanatory of Fig. 3 is illustrated in the state in the outside of mould in the forming process of making thermosetting resin moldings of the present invention;

The explanatory of Fig. 4 illustrates the travel mechanism of half-formed goods of the present invention;

The view of Fig. 5 illustrates the movable plate of device of the present invention and an example of fixture thereof;

The view of Fig. 6 illustrates the movable plate of the device of making two thermosetting resin moldings simultaneously of the present invention and the example of fixture thereof.

The view of Fig. 7 illustrates the movable plate of the device of making four thermosetting resin moldings simultaneously of the present invention and the example of fixture thereof.

The specific embodiment

A kind of preferable methods that is used to make thermosetting resin moldings according to the present invention is for example understood in the step of Fig. 2 and Fig. 3 (1)～(11).In step (1) and (2), identical with the situation of Fig. 1, protruding halfbody mould 12 is used for compression moulding thermosetting resin 11 and supports moulded products.Utilize recessed halfbody mould 13 for example to use melamine formaldehyde resin or other resin to plate with glaze 15 (seeing step (5) and (6) of Fig. 2 and Fig. 3) according to the outer surface 16 of the mode identical at moulded products 14 with conventional method, shown in the step (9) of Fig. 2 and Fig. 3 and (10), handle moulded products 17 then, be placed to the recessed halfbody mould that reclines with plating glaze surface, and form the coating of glaze 15 at the inner surface 18 of moulded products 17 moulded products outer surface 16.In order to obtain this thermosetting resin moldings 17, need plate with glaze at the outer surface 16 of moulded products 14, then, in this step to inner surface plating during with glaze, need open protruding halfbody mould 12 and recessed halfbody mould 13, and need with glaze half-formed goods be moved to recessed halfbody mould 13 sides for plating, shown in step (9).

As well known for one of skill in the art, when compression moulding thermosetting resin moulding material, regulate the resin injection rate so that there is excess material from die cavity, to overflow.If do not send into excess material, then can not apply enough big pressure to moulded products, variation such as intensity and glossiness, thus can not obtain gratifying moulded products.In the present invention, shown in the step (4) of Fig. 4, this overflows part 21 (so-called " burr ") and is utilized, and makes this burr part 21 and be connected in a movable plate 22 on the halfbody mould and closely contact.It should be noted that in the explanation hereinafter that the burr part 21 of Fig. 4 will be known as " forming burr portion ".

Movable plate 22 has hook elements 23 in its two ends attaching.Shown in (1) and (2) of Fig. 4, arbitrary halfbody mold structure precedent is as being connected by the retaining element 23 of hook elements 23 with movable plate in recessed halfbody mould 13 and the protruding halfbody mould 12.If link hook elements 23 movable plate 22 is fixed on the protruding halfbody mould 12, then movable plate 22 moved to protruding halfbody die side; If be attached on the recessed halfbody mould 13, then movable plate 22 is moved to recessed halfbody die side.Meanwhile, processed moulded products also moves up and down with the formation burr portion 21 that is bearing on the movable plate 22.

Contact with the part that forms burr 21 and in moving process the shape of the movable plate 22 of supporting moulded products there is no particular restriction.According to the shape of moulded products, it can be circular or that the angle is arranged, ellipse or other shape.In addition, movable plate 22 can upwards or local contact with formation burr portion 21 in the whole week that forms burr portion 21.As long as can move the half-formed goods that are molded.

According to the present invention, can plate with glaze according to the inner surface 18 of the mode identical with (6) with (10) with 3 step (9) according to Fig. 2 to moulded products 17 with step (5).

The present invention another preferred aspect, can Fig. 2 and 3 step (3) with (4) or/and in step (7) and (8) according to forming foil paper at the outer surface and/or the inner surface of moulded products 17, so that final moulded products has picture or pattern etc. on inner surface and/or outer surface with the described identical method of reference Fig. 1.

Example

Below with the teacup that uses melmac be fabricated to example with reference to description of drawings example of the present invention, wherein, press the step shown in Fig. 2 and 3 (1)～(11) and decorate inner surface and outer surface, and at these two surface formation glazes.

Fig. 2 and 3 step (1)～(6) are the steps that is used for the outer surface of decorated molded goods and forms glaze thereon, step (7)～(10) expression is used for the inner surface of decorated molded goods and forms the step of glaze thereon, and the step that finished product is taken out in step (11) expression.

At first, in the step (1) of Fig. 2 and 3, infeed melamine molding material 11 at protruding

halfbody mould

12 and 13 on recessed halfbody mould; Then in the step (2) of Fig. 2 and 3, close die also forms the base material 14 of moulded products.Identical with the past, condition of molding depends on the kind of employed thermosetting resin and moulded products.They are not especially specially at requirement of the present invention.In the step (3) of Fig. 2 and 3, the impregnated with resin (as melmac etc.) and ornamental printing paper (foil paper) 19 of drying are supplied with on the outer surface 16 of the moulded products base material on the protruding halfbody mould 12 from the outside.In step (4), close die and under predetermined condition (for example be 150～180 ℃ * 15～60s under the situation of melmac, most preferably 160 ℃ * 30s) make the foil paper clinkering.In the step (5) of Fig. 2 and 3, open mould, foil paper 19 is molded, infeeds glaze 15 then.In step (6), form glaze.In step (7), when mould is opened, moulded products is moved in the recessed halfbody mould 13.Under this state, utilize protruding halfbody mould 12 according to supplying with foil paper 19 with top identical method.In step (8), close die also makes the foil paper moulding.Like this, foil paper 19 clinkerings are at the inner surface of moulded products.In step (9), between the foil paper layer of inner surface and protruding halfbody mould, supply with glaze 15.In step (10), close die is at the inner surface formation glaze of moulded products.Can obtain the moulded products 17 that inner surface and outer surface at moulded products have foil paper and glaze by above step.

With compare in the past, the moulded products that obtains thus is all decorated at the outer surface and the inner surface of moulded products, and all be coated with glaze on two surfaces, thus have such advantage, promptly can be suppressed at the deterioration that the pollution of passing in time when using and causing and gloss reduction etc. cause.

The following describes the location of the moulded products when outer surface provides glaze and foil paper is provided in the step (3) of Fig. 2 and 3 and (5), and in step (7) and (9) moulded products when inner surface provides foil paper and glaze is provided mobile.

Described mould has (1)～(4) and the structure shown in Figure 5 as Fig. 4, (1) of Fig. 4 and (2) and Fig. 5 are the side views that mould is in closure state, and represent that respectively to be hooked in the lower semi-body mould be on the protruding halfbody mould 12 to latch hook 23 and the upper semi-body mould is a state on the recessed halfbody mould 13; (3) of Fig. 4 illustrate movable plate 22 between recessed halfbody mould 13 and protruding halfbody mould 12; (4) of Fig. 4 illustrate the structure that forms burr portion 21.Note reference number 25 expression moulded products.When mould is in closure state, by being hooked in recessed halfbody mould or the protruding halfbody mould on any locking bar 24, latch hook 23 links, and make movable plate 22 with the lifting of halfbody mould or the whereabouts that when mould is opened, are bonded, moulded products movement therewith thus.Notice that the quantity of latch hook 23 is generally two, the surface of opposite side that another is arranged on Fig. 4 (1) and (2) still, also can be provided with more a plurality of.Shown in Fig. 4 (4), move up and down in order to make moulded products, the formation burr portion 21 of moulded products is bearing on the movable plate 22, therefore requires to form burr portion 21 and has enough intensity.

The state of movable plate 22 is shown in side view (1)～(11) of Fig. 3 in forming process.At first, (1) of Fig. 3～(5) illustrate, from the decoration that is molded into outer surface of base material and the formation of glaze, latch hook 23 be hooked on the protruding halfbody mould 12 and moulded products attached to the state on the protruding halfbody mould 12.Secondly, (7) of Fig. 3～(10) illustrate that latch hook 23 is hooked on the recessed halfbody mould 13 and meanwhile movable plate 22 according to the state that moves attached to the identical mode of the moulded products on the recessed halfbody mould 13.

Notice that the size of the formation burr portion 21 that contacts with movable plate is not restricted especially, but thickness is preferably 0.2～5mm, thickness is 0.3～1mm more preferably, and width is preferably 0.3～50mm, and width is 1～20mm more preferably.

If thickness less than 0.2mm, then forms the enough intensity that burr portion can not have mobile moulded products, and ruptures sometimes; When greater than 5mm, be used to remove the polishing that forms burr portion and will become difficult.In addition, if width is less than 0.3mm, the burr portion situation on movable plate of can not hook stumbling in the time of moulding then can take place shrinking; If greater than 50mm, then remove the polishing that forms burr portion and will become difficult.

Fig. 6 and 7 illustrates the movable plate of the device of making 2 and 4 thermosetting resin moldings simultaneously of the present invention and the example of fixture thereof respectively.Fig. 6 (1) or Fig. 7 (1) illustrate the example of movable plate 32 or 42, Fig. 6 (2) or Fig. 7 (2) illustrate recessed halfbody die

assembly

31 or 41, Fig. 6 (3) or Fig. 7 (3) illustrate by movable plate 32 or 42 anchor halfbody die assembly 31 or 41 (the promptly inner half-formed goods that are molded into from base material that include) under the state that mould is opened, and run through

33 or 43 through

holes

34 or 44 by downside.Be enough to support the formation burr portion (not shown) of half-formed goods by size and thickness (for example greater than 0.3mm), the half-formed goods that obtained by the moulding of protruding halfbody die assembly (not shown) can move with recessed halfbody die assembly 31 or 41.Connecting

33 or 43 can for example move along the direction of arrow by the cylinder by electric automatic control, thereby recessed halfbody die

assembly

31 or 41 is automatically upwards moved down.The 45 expression directing pin of Fig. 7.

By the following method the melmac teacup that makes is above carried out test for contamination.At first, in rustless steel container, add 1440cc water.Add 80g nest (trade mark), 45g Network リ one プ (trade mark) and 50g granulated sugar subsequently.Thereby obtain the concentration more about 4～5 times than normal coffee.To immerse wherein as the teacup of example of the present invention with as the teacup (only similarly decorated and plate) of the comparative example of prior art with glaze at outer surface, then, with lid covered container with holes.Take back the stream cooler to prevent the evaporation of water at the described hole first line of a couplet, boiled continuously 6 hours, 12 hours and 24 hours.The result is down shown in the Table I.

Table I

The pollution numerical value of Table I is from visually grading evaluation from colourless " 0 " to brown " 10 " being carried out in pollution, simultaneously from visually glossiness being carried out significantly reducing to glossiness from no change " 0 " grading evaluation of " 10 ".

According to the method described above, comparative example is very big in the pollution level of inner surface, and the pollution that example of the present invention all has only little degree at the inner surface and the outer surface of moulded products.And example of the present invention does not all have reduction in the glossiness of inner surface and outer surface, and the glossiness of the inner surface of comparative example reduces.

This shows that teacup that makes according to example of the present invention etc. has and prevents the advantage polluted by coffee, and be sure of to have same effect aspect tea, condiment and other food.And have and suppress the effect that glossiness reduces.When glossiness reduces, can not recover by washing agent or bleaching agent, therefore, it is extremely important for the value of keeping tableware to prevent that glossiness from reducing.

Industrial usability

The present invention can provide by continuous series of steps a kind of inner surface and outer surface all decorate and and then plate thereon with glaze so that the thermosetting resin moldings of the deterioration that suppresses to cause owing to pollution, glossiness reduction etc. between the operating period; And can provide a kind of method for the production of this moulded products. Therefore, the present invention is very useful for using collective meal tableware, the hospital that uses cleaning, bleaching and disinfection cabinet, home for destitute, school, staff canteen etc. once to clean the place of a large amount of tablewares.

Claims

1. method that is used to make thermosetting resin moldings, comprise that the molded and heat of solidification hardening resin of mould that use is made up of recessed halfbody mould and protruding halfbody mould is to make thermosetting resin moldings, wherein, carry out following series of steps continuously: (a) close die, and be used to form the base material of described moulded products in protruding halfbody upper mould system; (b) after opening mould, at least once to attached to the surface plating of the described base material of protruding halfbody die side with glaze; (c) described base material is moved to recessed halfbody die side from protruding halfbody die side; (d) at least once to attached to the surface plating of the described base material of recessed halfbody die side with glaze, the part of the burr that forming from the flash of cavity by will be by molded base material the time when wherein opening mould in step (c) is bearing on the movable plate that is fixed on the mould and described base material is moved to recessed halfbody die side from protruding halfbody die side.

2. manufacture method according to claim 1 is characterized in that, in step (b), also is included in and forms glaze at least once forms a foil paper before on the surface of the base material that is attached to protruding halfbody die side step.

3. manufacture method according to claim 1 is characterized in that, in step (d), also is included in the step that forms a foil paper between the base material that is attached to recessed halfbody die side and the glaze layer.

4. manufacture method according to claim 1 is characterized in that, in step (b), also is included in the step that forms a foil paper between the base material that is attached to protruding halfbody die side and the glaze layer.

5. manufacture method according to claim 1 and 2 is characterized in that, is used for moving described base material and has the thickness of 0.2～5mm and the width of 0.3～50mm to the burr of the required formation of recessed halfbody die side.

6. the thermosetting resin moldings that method according to claim 1 and 2 obtains.

7. manufacturing installation that is used for the thermosetting resin moldings of manufacture method according to claim 1, comprise raw material thermosetting resin feedway, the mould of forming by recessed halfbody mould and protruding halfbody mould, the opening and closing device of mould, the heating of mould and pressue device, be used to form the glaze feedway of glaze, be used to form the foil paper feedway of decoration, be arranged on the movable plate on the mould, and the fixture that can connect or separate with protruding halfbody mould and recessed halfbody mould of movable plate, wherein, can in moving process, support described base material at movable plate described in the step (c).

8. method that is used to make thermosetting resin moldings, comprise that the molded and heat of solidification hardening resin of mould that use is made up of recessed halfbody mould and protruding halfbody mould is to make thermosetting resin moldings, wherein, carry out following series of steps continuously: (a ') close die, and be used to form the base material of described moulded products in recessed halfbody upper mould system; (b ') after opening mould, at least once to attached to the surface plating of the described base material of recessed halfbody die side with glaze; (c ') described base material is moved to protruding halfbody die side from recessed halfbody die side; (d ') at least once to attached to the surface plating of the described base material of protruding halfbody die side with glaze, the part of the burr that forming from the flash of cavity by will be by molded base material the time when wherein opening mould in step (c ') is bearing on the movable plate that is fixed on the mould and described base material is moved to protruding halfbody die side from recessed halfbody die side.

9. manufacture method according to claim 8 is characterized in that, in step (b '), also is included in and forms the step that at least once forms a foil paper before the glaze on the surface of the base material that is attached to recessed halfbody die side.

10. manufacture method according to claim 8 is characterized in that, in step (d '), also is included in the step that forms a foil paper between the base material that is attached to protruding halfbody die side and the glaze layer.

11. manufacture method according to claim 8 is characterized in that, in step (b '), also is included in the step that forms a foil paper between the base material that is attached to recessed halfbody die side and the glaze layer.

12. according to Claim 8 or 9 described manufacture methods, it is characterized in that, be used for moving described base material and have the thickness of 0.2～5mm and the width of 0.3～50mm to the burr of the required formation of protruding halfbody die side.

13. according to Claim 8 or the thermosetting resin moldings that obtains of 9 described methods.

14. manufacturing installation that is used for the thermosetting resin moldings of manufacture method according to claim 8, comprise raw material thermosetting resin feedway, the mould of forming by recessed halfbody mould and protruding halfbody mould, the opening and closing device of mould, the heating of mould and pressue device, be used to form the glaze feedway of glaze, be used to form the foil paper feedway of decoration, be arranged on the movable plate on the mould, and the fixture that can connect or separate with protruding halfbody mould and recessed halfbody mould of movable plate, wherein, can in moving process, support described base material at movable plate described in the step (c ').