JPS6360749A - Thermoplastic resin press molded form having emboss effect tuning with pattern - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a thermoplastic resin press-molded product used for, for example, thermoplastic resin tiles, underlays, desk cloaks, credit cards, etc. To provide a thermoplastic resin press-molded body having a unique sound and aesthetic effect in which an emboss effect is exhibited due to the distortion occurring inside the molded body.

[Conventional technology]

A resin molded body to which an embossing that matches the pattern is added is often used as a resin molded body for a variety of purposes because the pattern in the molded body gives a novel feel.

Therefore, in the resin molded body having an emboss that matches the pattern, (1) a transparent synthetic resin powder is filled on the decorative sheet having the emboss that matches the pattern; (2) A material obtained by press-forming without crushing the material, (2) A material obtained by performing an embossing process at the same time as press-forming using a backing plate with an uneven surface in the press-forming process. 3)
(4) One obtained by further performing a post-emboss process on the obtained press molded body, and (4) one obtained by pouring a room-temperature curing resin onto a decorative sheet that has been embossed to match the pattern and curing it. There are things that have been obtained.

[Problems to be Solved by the Invention] By the way, in the resin molded product having an emboss that matches the pattern, in the case of press molding according to item (1), the emboss on the decorative sheet with the pattern is easily crushed, and the emboss effect is Not only is it likely to result in an unclear resin molded object, but
During the forming process, it is necessary to mechanically emboss the decorative sheet with a pattern in accordance with the pattern;
It has the disadvantage that the manufacturing process is complicated. Also, (2
The product obtained by carrying out the embossing step simultaneously with the press forming described in item ) has a problem in terms of quality because the pattern applied to the decorative sheet and the embossing tend to be imperfectly synchronized.

Furthermore, in the case of the post-process of (3) folding embossing, the synchronization between the pattern and the embossing tends to be incomplete, as in the case of the resin molded product in item (2) above, and moreover, A post-emboss process is required during the manufacturing process, and there is also the complexity of dusting. In addition, the products obtained by pouring the room-temperature-curing resin described in item (4) include a step in which an embossing that matches the pattern is mechanically applied to a decorative piece with a pattern during the manufacturing process, and a hardening-type resin. Casting and curing processes are required,
It has the disadvantage that the manufacturing process is time-consuming.

Thus, the thermoplastic resin press-molded body having an en, zesu effect that is in sync with the pattern of the actual invention has perfect synchronization between the pattern and the emboss, has a remarkable emboss effect, and is attached with an emboss. Not only can it be obtained without completing the mechanical process for embossing, but it also has the characteristics that the height of the embossing effect can be adjusted at will by simply adjusting the conditions when obtaining the resin molded product. be.

[Means for solving problems]

The thermoplastic resin press-molded body having an emboss effect that is in sync with the pattern of the invention of Mizui 1 has the advantage of printing [a thermoplastic resin layer having a pattern layer and one layer that is in contact with the non-printing surface of the thermoplastic resin layer]. It consists of a laminated structure with the above thermoplastic resin layer, and both the upper and lower surfaces of the resin molded body are made into a double-sided surface (
・Sheet-like thermoplastic resin press-molded product, that is,
This is a multi-layered thermoplastic resin press-molded body in which a pattern layer marked 1i] is exposed on the surface of the outermost layer of the thermoplastic resin molded body, and the thickness direction p of the sheet-like thermoplastic resin press-molded body is ℃・The interface between the first thermoplastic resin layer portion in contact with the pattern layer between the marks 1 and the second thermoplastic resin layer portion in contact with the first thermoplastic resin layer portion is on the printing pattern layer side. It is said to be a gentle slope of a convex arc-shaped surface consisting of a gentle slope and a steep slope that form a convex arc toward the surface.

In addition, the thermoplastic resin press-molded body having an emboss effect that is in sync with the pattern of the Sui-Tei 2 invention includes a thermoplastic resin layer having a printed pattern layer and a layer that is in contact with the printed surface of the thermoplastic resin layer. A sheet consisting of a laminated structure with the above thermoplastic resin layer, or a laminated structure with the above laminated structure and another thermoplastic resin layer, and in which the upper and lower surfaces of the thermoplastic resin molded body are smooth surfaces. It is a thermoplastic resin press-molded body having a multilayer structure in which a printed pattern layer is present between the thermoplastic resin layers in the thermoplastic resin molded body V, and the sheet-shaped thermoplastic resin molded body is The interface between the thermoplastic resin layer located near the center in the thickness direction of the thermoplastic resin layer that is in contact with the printed pattern layer in the thickness direction of the thermoplastic resin press-molded body and the mark 11 pattern layer is This is the gentle slope of a convex arc-shaped surface consisting of a gentle slope and a steep slope that form a convex arc toward the printed pattern layer side.

In addition, FIG. 1 shows the minimum structure of the thermoplastic resin layer in a thermoplastic resin press-molded body having an embossing effect that is in synch with the pattern of the invention of Mizui 1. A sheet-like thermoplastic resin press-molded body 3 is made of a laminated structure of a plastic resin layer 1 and a second thermoplastic resin layer 2 that is in contact with the non-printing surface of the first thermoplastic resin layer 1. This is what is shown.

The thermoplastic resin press-molded body 3 has a smooth upper surface 4 and a lower surface 5, both of which have sharp edges and deviations, and the above-mentioned portions that are in contact with the printed pattern layer m1 in the thickness direction of the press-molded body 3. The interface 6 between the first thermoplastic resin layer portion IA and the second thermoplastic resin layer portion 2A that is in contact with the first thermoplastic resin layer portion IA has a convex arc shape toward the printed pattern layer m1 side. A convex arcuate surface 9 consisting of a gentle slope 7 and a steep slope 8
This is considered to be the gentle slope 7.

Furthermore, Fig. 2 shows the minimum structure of the thermoplastic resin layer in a thermoplastic resin press-molded body having an emboss effect that is synchronized with the pattern of the Sui-Tei 2 invention. A sorted thermoplastic resin press-molded body 13 is shown having a laminated structure of a plastic resin layer 11 and a second thermoplastic resin layer 12 that is in contact with the printed surface of the first thermoplastic resin layer 11. It is something that

Both the upper surface 14 and the lower surface 15 of the thermoplastic densified press molded body 13 are smooth surfaces, and are in contact with the printed pattern layer m2 in the thickness direction of the press molded body 13. An interface 16 between the printed pattern layer m2 and the second thermoplastic resin layer 12, which is a thermoplastic resin layer located near the center in the thickness direction of the thermoplastic resin layer, is convex toward the printed pattern layer m2 side. This is the gentle slope 17 of a convex arc-shaped surface 19 consisting of a gentle slope 17 and a steep slope 18 that are arc-shaped.

It should be noted that when using a thermoplastic densified press molded product having an embossed effect that matches the pattern of the invention of Suiyo 1 and the invention of Suiyo 2, in addition to the thermoplastic resin layer, if necessary, for example, a thermosetting material may be added. Of course, the resin layer 1 may include paper, non-woven fabric, cloth, glass paper, glass plate, Vi, gold IX plate, etc., as appropriate. Furthermore, it goes without saying that the thermoplastic resin press-molded body may be provided with a structure formed by post-processing, such as a protective layer made of a thermosetting synthetic resin.

Taking into account the invention of Mizuo 1 and the second invention, the printed pattern in the thermoplastic resin press-molded product, the bitterness, is a concrete pattern, and the abstract pattern 1.
Thermoplastic resin sort that is letters, numbers, etc. and becomes a thermoplastic resin layer, for example, Semafan. Gravure on thermoplastic resin sheets such as acetate, polyethylene, polypropylene, polyester, polyvinyl chloride, polyvinylidene chloride, polystyrene, polycarbonate, polyvinyl alcohol, polyamide, etc.

It is formed using colored or colorless printing ink using printing means such as screen, offset, flexography, and inkjet.

In addition, when one of the thermoplastic resin layers in the thermoplastic resin press-molded body t is composed of a thermoplastic resin layer that exhibits glitter and contains, for example, a pigment, etc., It has been confirmed that the embossing effect that synchronizes with the colored printed pattern layer becomes more vivid.This thermoplastic resin layer with glittering properties is made of so-called glittering pigments,
For example, aluminum pigments, bronze pigments.

This is a layer that exhibits glittering properties using pearl pigments, etc., and includes sheets obtained by petaprinting or coating a transparent thermoplastic resin sheet with a printing ink based on the pigments, as well as sheets in which the pigments are kneaded. It is formed as a sheet, or even a coating layer, etc., and when the thermoplastic resin layer with glitter is an upper layer than the printed pattern layer, the resin layer must be transparent. is necessary. Furthermore, there are cases in which the above-mentioned printed pattern layer is formed on the above-mentioned thermoplastic resin sheet that becomes the thermoplastic resin layer that exhibits glitter.

The thermoplastic resin press-molded body having an emboss effect that is synchronized with the pattern of the first invention having the above-mentioned structure is in contact with a decorative sheet, which is a thermoplastic resin layer having a printed pattern layer, and a non-printing surface of the decorative sheet. When a thermoplastic resin press-molded body is obtained by subjecting the stacked body with one or more thermoplastic resin layers to a blur molding, as the decorative sheet,
The printed pattern layer and the thermoplastic resin sheet constituting the decorative sheet are selected to have different thermal melting behavior at the same temperature, and the stacked body is heated when it is subjected to press molding.

By being pressurized, at least the printed pattern layer constituting the decorative sheet and the thermoplastic resin sheet in the stacked body and the contact portion of the decorative sheet in the thermoplastic resin layer that is in contact with the decorative sheet are The thickness of the thermoplastic resin layer, which is involved in compression during press molding, is 90 to 90 mm at the start of press molding.
This can be easily obtained by performing press molding in a manner that satisfies the requirement of starting cooling after being compressed to 40%.

In addition, the thermoplastic resin press-molded body having an emboss effect that matches the pattern of the second invention is brought into contact with the decorative sheet, which is a thermoplastic resin layer having a printed pattern layer, and the printed surface of the decorative sheet. When a thermoplastic resin press-molded body is obtained by subjecting a stacked body of thermoplastic resin layers having a thermoplastic resin layer as an essential component to press molding, the decorative sheet is used as the decorative sheet. Selecting a printed pattern layer and a thermoplastic resin sheet that have different thermal melting behavior at the same temperature, and subjecting the superimposed body to heat and pressure when subjected to press molding. As a result, at least the printed pattern layer constituting the decorative sheet in the stacked body and the thermoplastic resin near the printed pattern layer including the portion in contact with the printed pattern layer are melted;
By performing press molding in a manner that satisfies the requirement that cooling should be started after the thickness of the thermoplastic resin layer involved in compression during press molding has been compressed to 90 to 40% of the thickness at the start of press molding. It is easily obtained.

In addition, each of the above-mentioned press molding conditions, that is, the molding conditions when obtaining the press molded article of the first invention [during heating in press molding, at least the decorative sheet in the stacked body of thermoplastic resin layers is implanted] The printed pattern layer, the thermoplastic resin sheet, and the thermoplastic resin in the vicinity of the contact area of the decorative sheet in the thermoplastic resin layer that is in contact with the decorative sheet melt and are involved in compression during press molding. The thickness of the thermoplastic resin layer is 9 at the start of press molding.
Press molding conditions that satisfy the condition of "Starting cooling after being compressed to 0 to 40% t" and "Press molding t
During heating in the oven, at least the printed pattern layer constituting the decorative sheet in the stacked thermoplastic resin layer and the thermoplastic resin near the printed pattern layer, including the portion in contact with the printed pattern layer, melt. Press molding conditions that satisfy the following conditions are as follows: and cooling is started after the thickness of the thermoplastic resin layer involved in compression during press molding is compressed to 90 to 40% of the thickness at the start of press molding. Generally, the temperature during heating during press molding is higher than the temperature during heating during press molding when obtaining a conventional general thermoplastic resin press molded body, and the degree of pressurization is also greater.

In addition, the above-mentioned press molding conditions when press molding the stacked body of thermoplastic resin layers are such that the thickness of the thermoplastic resin layer involved in compression during press molding is 90 to 40% of that at the start of press molding. The "point of compression" is when the press pressure is kept constant throughout the pressurization period, i.e., when the initial maximum press pressure is maintained, press molding where the press pressure is gradually reduced during the pressurization period. It has been found that this can be achieved in about 1/2 the pressing time compared to the method.

Furthermore, the decorative sheet, which is a thermoplastic resin layer having a printed pattern layer in the stacked body of thermoplastic resin layers subjected to the press molding, may be made of, for example, cellophane, acetate,
polystyrene.

Thermoplastic resin sheets such as polypropylene, polyester, polyvinyl chloride, polyvinylidene chloride, polystyrene, polycarbonate, polyvinyl alcohol, polyamide, etc., preferably polyvinyl chloride sheets, are printed by, for example, gravure, screen, offset, flexo, inkjet, etc. A colored or colorless printed pattern layer is formed using a method, but the thermal melting behavior of the thermoplastic resin sheet in this decorative sheet and the thermal melting behavior of the printed pattern layer are different at the same temperature. There is something
For example, it is necessary that the two have different melting points. Note that the layers other than the decorative sheet in the stacked body of thermoplastic resin layers subjected to the press molding may be applied in a powder state.

In addition, when molding a thermoplastic resin press molded body having an embossed effect that matches the pattern of the water tower invention by the above method, at least one of the upper and lower parts of the stacked thermoplastic resin layer subjected to molding is On one side, an intervening film selected from polyester film, nylon film, fluororesin film, and vinylon film, that is, a thermoplastic resin layer that is subjected to press molding by heat and pressure during press molding, is superimposed. Interposed is a release film that has heat resistance that prevents heat welding to the body surface or mold surface, non-extensibility when heated with little elongation when heated, good peelability, and excellent surface strength. Alternatively, the thermoplastic resin layer may be molded by using a frame body to which at least one of the upper and lower end surfaces of the entire circumferential side of the stacked thermoplastic resin layer to be subjected to the molding is in contact. It has been confirmed that by press-molding a stacked body of resin layers, a press-molded body with a clearer embossing effect can be obtained.

The mechanism by which the press-formed body produced under the above-mentioned press-molding conditions becomes a thermoplastic resin molded body having an embossed effect that is in sync with the pattern of the inventions of Sui-Tei 1 and Sui-Tei 2 is that, during press molding, the printed pattern layer and the printing Two or more thermoplastic resin layers that are in contact with the pattern layer in the thickness direction are melted and fluidized, and the thermoplastic resin sorting in f'y-to and the flow during thermal melting at the same temperature as the pattern layer. Strain caused by the difference in behavior is formed in a thermoplastic resin layer that is in contact with the pattern layer in the thickness direction, or is formed in the pattern layer and a thermoplastic resin layer that is in contact with the pattern layer in the thickness direction, A press-formed body having an embossing effect that synchronizes with the pattern can be obtained.Due to the above-mentioned distortion being formed during this press-forming, the printed pattern layer extends from the center in the thickness direction of the press-formed body to the surface of the molded body ( The details of the mechanism by which the embossed effect protruding from the surface (or the back side) is obtained are presumed to be as follows.

When obtaining the thermoplastic resin press-molded article of the invention of Suiden 1, and when the melting temperature of the resin vehicle constituting the printed pattern layer in the decorative sheet is lower than the melting temperature of the thermoplastic resin sheet in the decorative sheet, In ・, when the temperature of the molding material rises after the start of press forming, the pattern layer part first melts, and the flow resistance in the horizontal direction in the thickness direction of the molding material between the melted part and the press surface plate. A middle stage is reached in which the amount of the material decreases, and as the press forming progresses, the entire material becomes soft and is subjected to processing.

For this reason, the thermoplastic resin layer in the molding material starts to flow, but this flow is slower in areas near the press surface plate than in areas farther away, so the flow rate is lower in the thickness direction. A distribution occurs. As described above, this flow is not particularly suppressed in the pattern layer and the thermoplastic resin layer portion that is in contact with the pattern layer in the thickness direction because the resistance of this layer to the press surface plate is small. , larger than the area where the flow velocity is high,
It is presumed that this is because distortion is generated and fixed in such a state. In addition, when obtaining the thermoplastic resin press-molded article of the invention of Mizui 2, the thermoplastic resin has a melting temperature of t5 of the resin vehicle constituting the printed picture Pli layer in the decorative sheet; If the temperature of the molding material is lower than the melting temperature of the material after press forming starts, the pattern layer will first melt, and at least the upper and lower parts of the pattern layer in the thickness direction will melt. By sorting the thermoplastic resin and heating the plastic resin layer, an intermediate stage is achieved in which the flow resistance in the horizontal direction in the thickness direction of the molding material is reduced. They will be placed under pressure. For this reason, the thermoplastic resin layer in the molding material starts to flow horizontally, but this flow is slower in areas near the press platen than in areas farther away, so the thickness A distribution occurs in the flow velocity in the direction. This flow is promoted in the pattern layer portion because the resistance to horizontal flow is reduced in the thermoplastic resin layer and thermoplastic resin sheet that are in contact with at least the top and bottom of the pattern layer, and the flow rate is increased. It is presumed that this is because the pressure in the faster parts becomes greater, and in this state distortion occurs and becomes fixed.

In the case of obtaining the thermoplastic resin press-molded article of the invention of Mizui 1, and the melting temperature of the resin constituting the printed pattern layer in the decorative sorting is higher than the melting temperature of the thermoplastic resin/-t in the decorative sheet. - In some cases, when the temperature of the molding material reaches Kamiwa after the start of press molding, the non-printing surface of the thermoplastic resin sheet in the decorative sheet melts, and the molding material between the melted part and the press surface plate melts. A middle stage is achieved in which the flow resistance in the horizontal direction with respect to the thickness direction of the material decreases, and as the press forming further progresses, the entire product becomes soft and is placed under pressure. For this reason, the thermoplastic resin layer in the molding material starts to flow, but this flow is slower in areas near the press surface plate than in areas further away, so it is difficult to flow in the thickness direction of the molding material. A distribution occurs in the flow velocity. This flow is promoted in the non-printed pattern layer portion of the thermoplastic resin sheet because the resistance of this layer to the press surface plate is small, as described above, and the pressure in the portion where the flow rate is high is higher. It is presumed that this is because distortion occurs and becomes fixed in such a state. Further, in the case of obtaining a thermoplastic resin press-molded body of Sui-Tei 2, and when the melting temperature of the resin constituting the printed pattern layer in the decorative sheet is higher than the melting temperature of the thermoplastic resin sheet in the decorative sorting, When the temperature of the molding material rises after the start of press molding, the surface of the non-printed pattern layer of the thermoplastic resin sort in the decorative sheet melts, and at least the surface of the non-printed pattern layer,
The lower thermoplastic resin layer provides an intermediate stage in which the flow resistance in the horizontal direction relative to the thickness of the molding material is reduced.
As the press molding further progresses, the whole becomes soft and is placed under pressure. For this reason, the thermoplastic resin layer in the molding material starts to flow in the horizontal direction, but this flow
Since the flow velocity is lower in parts near the press platen than in parts farther away, a distribution of flow velocity occurs in the thickness direction. The second flow is promoted in the non-printing pattern layer surface portion because the resistance to horizontal flow in the thermoplastic resin layer that contacts at least the top and bottom of the non-printing pattern layer surface in the thickness direction is reduced. It is presumed that this is because the pressure in the parts where the flow rate is high becomes higher, and in this state, distortion occurs and becomes fixed.

In addition, when obtaining the thermoplastic resin press-molded article of the invention of Mizui 1 by the above-mentioned method, the melting point of the thermoplastic resin (vehicle) in the printed pattern layer of the decorative sheet and the melting point of the thermoplastic resin sheet in the decorative sheet. If there is a difference of 5°C or more between the
It has been confirmed that an even higher embossing effect can be obtained when the thermoplastic resin layer constituting the decorative sheet and the thermoplastic resin layer in contact with the sheet have different thermal melting behavior. In addition, when obtaining the thermoplastic resin press molded article of the invention of Mizui 2 by the same method as described above,
If there is a difference of 5°C or more between the melting point of the thermoplastic resin (vehicle) in the printed pattern and the melting point of the thermoplastic resin layer that is in direct contact with the ↑t ↑t marking mark 1 image bleaching layer, then ,
A sufficiently effective embossing effect is obtained, and an even higher embossing effect can be obtained when the thermoplastic resin layers constituting both the upper and lower layers of the printed pattern layer have different thermal melting behavior. It has been confirmed that it does. In addition, there is no particular restriction on the upper limit of the difference between the melting point of the vehicle of the printed pattern layer and the melting point of the thermoplastic resin layer that is in direct contact with the printed pattern layer, but there are problems with handling workability, raw materials, and materials. etc. to 40
A practically usable melting point temperature difference is up to about °C.

Furthermore, when obtaining the thermoplastic resin press molded article of the Sphagnum moss invention by each of the above methods, a pattern is placed at or near the center in the thickness direction of the thermoplastic resin G57 in the molding material subjected to press molding. An emboss effect appears when there is a layer, and an emboss effect appears especially when the thermoplastic resins in the thermoplastic resin layer above and below the printed pattern layer are the same. Therefore, the printed pattern layer should be formed into a press-formed body in which it is exposed above the thermoplastic resin layer in the thickness direction, that is, above the center of the thermoplastic resin layer in the resulting press-formed body. is preferred.

Furthermore, when obtaining the thermoplastic resin press-molded article of the actual invention by each of the above methods, the intervening film may be interposed on at least one side of the molding material serving as the thermoplastic resin layer to be subjected to molding, or the frame body may be In the case of press-forming by bringing the molding material into contact with the molding material, the degree of deformation in which at least one of the upper and lower sides of the molding material stretches in the horizontal direction is suppressed during the press-forming process of the molding material. As a result, the distortion caused by the difference in flow behavior during thermal melting at the same temperature with the pattern layer of the thermoplastic resin sheet in the decorative sheet described above becomes more pronounced, and the embossed effect that is in sync with the pattern becomes clearer. It becomes possible to easily obtain a thermoplastic resin molded article.

Furthermore, the thermoplastic resin press molded article of the present invention can also be molded by a roll press method.

〔Example〕

The specific structure of a thermoplastic resin press-molded body having an emboss effect that matches the pattern of the actual invention will be described below with reference to manufacturing examples.

Example 1 A transparent PVc sheet (thickness: 0.5 mm) with a granite-like pattern layer formed using acrylic ink on the back side of the decorative sheet by gravure printing.
25mm, plasticizer 30 parts).

Pearl clear film (0.07 mm thick, 23 plasticizer parts) made by kneading pearl pigments into PVC sheet for intermediate resin layer.

Extruded sheet (thickness 0.5 mm) with the following composition.

Vinyl chloride/vinyl acetate copolymer...100 parts by weight plasticizer (
DOP) 30 parts by weight Titanium oxide 15 parts by weight Calcium bicarbonate Old... 300 parts by weight Tin stabilizer
・・・・・・ 4 parts by weight or more of each sheet and film are combined into a decorative sheet/bur clear film/3 PV sheets.
A stacked body in which an intervening film made of a polyethylene terephthalate film with a thickness of 25 μm was further abutted on the decorative sheet surface of the molding material obtained by stacking them in the order of C.
It was sandwiched between hot plates at 0°C and press-formed at an initial pressure of 50 kg/cJ, and when the pressure reached 20 kg/ca after 4 minutes, water cooling was started and the temperature of the hot plates was increased to 25 kg/cJ in 15 minutes.
After cooling to .degree. C., the intervening film was peeled off to obtain a press-molded product, which was the desired product. Note that the press pressure during water cooling was maintained at 10 kg/cJ. Further, in the molding material, the PVC sheet for the base material is a layer that does not participate in compression during press molding.

The thickness of the obtained press molded thermoplastic resin molded product was 1.70 mm, the front and back surfaces were each smooth, the surface layer was a transparent layer, and the molded product was formed through the transparent layer. The granite-like pattern layer has a printing ink part that protrudes upward in a convex shape, making it an innovative vinyl chloride tile with an emboss that matches the pattern.
When the cross section of the press-formed body was observed with a magnifying glass, it was found that the interface between the printed pattern layer and the burl clear film layer has a convex arc-shaped surface consisting of a gentle slope and a steep slope that are convex toward the printed pattern layer. It was confirmed that it corresponds to my gentle slope.

Example 2 A transparent PVC sheet (
0.25 mm thick, plasticizer 3o parts).

Sheet for intermediate resin layer Synthetic paper filled with calcium carbonate (thickness 0.1O
mm).

Sheet transparent PVC7 ilm for base material (thickness Q, 25 mm, plasticizer 30 parts).

A stacked body in which an intervening film made of polyethylene terephthalate film with a thickness of 25 μm is brought into contact with the decorative sheet surface of the molding material obtained by overlapping each of the above sheets and films in the order of decorative sheet layer paper/PVC film. was press-molded under the same press-molding conditions as in Example 1 except that the heating time during press-molding was 2 minutes, and then the intervening film was peeled off to give a thickness of 0.48 mm.
mmO thermoplastic acid plastic resin molding.

The obtained thermoplastic resin press molded bodies are shown in Table 1.

The back screen is a smooth surface, and the printed pattern layer formed through the transparent layer that is the surface layer has an embossment that matches the pattern, giving it an excellent design effect. .

Note that the thermoplastic resin press molded article was suitable for use as an underlay.

Further, when the cross section of the press molded body was observed with a magnifying glass, the interface between the printed pattern layer and the sheet layer for the intermediate resin layer consisted of a gentle slope and a steep slope forming a convex arc shape toward the printed pattern layer side. It was confirmed that it corresponds to a gentle slope among convex arcuate surfaces.

Example 3 Decorative sheet A sheet in which a stained glass-like pattern layer was formed on the surface of a transparent PVC film (thickness O, lrmn, leaf material 20 mm) by flat screen printing with H series halftone ink [Jujo Chemical Co., Ltd.] .

Sheet for base material A sheet in which a 10μ thick coating layer of ink containing Burr pigment is formed using Miyayo #26 on the surface of a transparent PVC film (thickness 0.1 mm, plasticizer 20 parts).

A stacked body in which an intervening film made of a polyethylene terephthalate film with a thickness of 25 μm was brought into contact with the decorative sheet surface of a molding material in which a decorative sheet and a base material sheet were overlapped was press-molded under exactly the same conditions as in Example 2. After that, the intervening film was peeled off to obtain a sheet-like thermoplastic resin press-molded product having a thickness of 0.13 mm.

When the obtained thermoplastic resin press molded thermoplastic resin sheet was attached to a glass plate with an adhesive, the entire glass plate became translucent, and the pattern layer had an embossment that matched with the pattern layer. The appearance of cut glass-like stained glass was obtained.

Furthermore, when the cross section of the press-formed body was observed with a magnifying glass, the interface between the decorative sheet layer and the base material sheet layer was found to be in the portion of the decorative sheet layer that was in contact with the printed pattern layer in the thickness direction of the press-formed body. and the base material sheet layer portion that is in contact with the decorative sheet layer portion is a gentle slope of a convex arc-shaped surface consisting of a gentle slope and a steep slope forming a convex arc shape toward the printing pattern layer side. It was confirmed that they are compatible.

Example 4 A transparent acrylic resin plate (a) with a thickness of 1 mm and a plate with a thickness of 0.0
A decorative sheet (b) in which a solid print and a gradated abstract pattern printed pattern layer are formed on the surface of a 7 mm transparent PVC film by gravure printing using salt-vinyl acetate/acrylic ink.
), a 0.09 mm thick clear pearl PVC film containing all mica (c), and a 0.07 mm thick milky white PVC film (plasticizer 18 bar 7) (d) are layered one after another. The material for molding was inserted between the hot plates of tso'c and press-formed at an initial pressure of 50 kg/ctA. After 5 minutes, when the pressure reached 10 kg/ca, water cooling was started. A resin press molded body was obtained by continuing water cooling under the same conditions as water cooling in press molding.

In the resulting acrylic decorative board, which is a resin molded product, a printed pattern layer consisting of an abstract pattern formed through a transparent acrylic resin layer protrudes upward, and embossing that is in sync with the pattern layer is introduced. As a result, it has become an extremely innovative and highly designed electrical signboard.

Furthermore, when the cross section of the press molded product was observed with a magnifying glass, the interface between the decorative sheet (■) and the clear pearl PVC film layer was found to be the 4g1 sheet layer in contact with the printed pattern layer in the thickness direction of the press molded product. The interface between the part and the clear pearl PVC film layer part in contact with the decorative sheet layer part is a gentle slope of a convex arc-shaped surface consisting of a gentle slope and a steep slope forming a convex arc shape toward the printing pattern layer side. It was confirmed that they are compatible.

[Operation and effect of the invention]

The thermoplastic resin press-molded body having an emboss effect that matches the pattern of each of the present inventions is one in which distortion occurring at the interface between the thermoplastic resin layers in the press-molded body is visually recognized as overlapping with the printed pattern layer. The synchronization between the pattern and the emboss is perfect, and the emboss effect is produced by internal distortion, so it is observed to be exaggerated compared to the actual unevenness, and the emboss is noticeable. It is effective.

Furthermore, thermoplastic resin press-molded bodies having an embossing effect that matches the pattern of each of the inventions can not only be obtained without completing the mechanical process for embossing, but also be used as a press-molding material when obtaining the press-molded bodies. There is also the function and effect of being able to arbitrarily adjust the degree of distortion of the embossing effect by adjusting the press forming conditions, etc.

[Brief explanation of the drawing]

Figure 1 is an enlarged cross-sectional view of a main part of an example of a thermoplastic resin press-molded product having an embossed effect that matches the pattern of the invention of Mizui 1, and Figure 2 shows the pattern of the invention of Mizui 2. FIG. 2 is an enlarged sectional view of a main part of an example of a thermoplastic resin press-molded product having an embossed effect. ml: print til + pattern layer, 1: thermoplastic resin layer having a printed pattern layer, 2: thermoplastic resin layer in contact with the non-printing surface of thermoplastic resin layer 1, 3; /-r-shaped thermoplastic resin press molded body, 4 the upper surface of the nibless molded body 3, 5 the lower surface of the nibless molded body 3, the thermoplastic resin layer portion in contact with the printed pattern layer m1 in the thickness direction of the IA nibless molded body 3, 2
A: Thermoplastic resin layer portion in contact with thermoplastic resin layer portion IA, 6: Interface between thermoplastic resin layer portion IA and thermoplastic resin layer portion 2A, 9: Convex arcuate surface.

Claims (2)

[Claims] (1) Sheet-like thermoplastic resin press molding consisting of a laminated structure of a thermoplastic resin layer having a printed pattern layer and one or more thermoplastic resin layers in contact with the non-printing surface of the thermoplastic resin layer a first thermoplastic resin layer portion in contact with the printed pattern layer in the thickness direction of the sheet-like thermoplastic resin press-molded body; and a second thermoplastic resin layer portion in contact with the first thermoplastic resin layer portion. The interface with the layer portion is a gentle slope of a convex arc-shaped surface consisting of a gentle slope and a steep slope forming a convex arc shape toward the printed pattern layer side, and the sheet-like thermoplastic resin press-molded article 1. A thermoplastic resin press-molded article having an embossed effect that matches a pattern, characterized in that both upper and lower surfaces of the article are smooth. (2) In a sheet-like thermoplastic resin press-molded article having a laminated structure of a thermoplastic resin layer having at least a printed pattern layer and a thermoplastic resin layer in contact with the printed surface of the thermoplastic resin layer, the The interface between the thermoplastic resin layer and the printed pattern layer, which is located near the center in the thickness direction of the thermoplastic resin layer that is in contact with the printed pattern layer in the thickness direction of the sheet-like thermoplastic resin press-molded body, is , is a gentle slope of a convex arc-shaped surface consisting of a gentle slope and a steep slope that are convex toward the printing pattern layer side, and both upper and lower surfaces of the sheet-like thermoplastic resin press-molded object 1. A thermoplastic resin press-molded article having an embossed effect that matches a pattern, characterized in that the surface is smooth.