JPS63132028A - Manufacture of thermoplastic resin laminate with emboss effect - Google Patents

Abstract

PURPOSE:To obtain the thermoplastic resin laminate in which the tuning of a resin layer with a printing pattern layer provides perfect emboss effect by introducing the emboss effect caused by the behavior-difference in a molten state under heating between a thermoplastic resin layer and a printing pattern layer at roll laminating. CONSTITUTION:The material for laminate composed of the laminated body of the decorative sheet composed of the thermoplastic resin sheet with a printing pattern layer and the thermoplastic resin sheet becoming thermoplastic resin layer of one layer or more, is continuously laminated by roll laminate process. At its roll laminate, the printing pattern layer and the thermoplastic synthetic resin layer of two layers or more being in contact with the printing pattern layer in width direction in said laminated body, are melted and caused to flow. The strain generated by the difference of flowing behavior in a molten state at the same temperature between the thermoplastic resin sheet and the printing pattern layer in a decorative sheet occurs in the thermoplastic resin layer being in contact with the printing pattern layer in thickness-direction, or in both the printing pattern layer and the thermoplastic resin layer being in contact with the pattern layer in width direction, thereby obtaining the thermoplastic resin laminate in which emboss effect tuning itself to the printing pattern appears.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a method for producing a thermoplastic resin laminate used as, for example, a thermoplastic resin tile, underlay, desk mat, etc. The present invention provides a method for continuously producing a carcass and a thermoplastic resin layer having an embossed effect that matches the pattern without going through any process.

[Conventional technology]

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

However, in a method for producing a resin laminate having an embossed effect that matches the pattern, a transparent synthetic resin powder is filled onto a decorative sheet that has an embossed effect that matches the +1+ pattern, and the decorative sheet (2) A method of carrying out the embossing process simultaneously with press forming by using a backing plate with an uneven surface in the press forming process; (3) There are two methods: (4) a method in which the obtained press-molded body is further subjected to a post-emboss process, and (4) a method in which a room-temperature curing resin is poured onto a decorative sheet that is embossed to match the pattern and cured.

[Problem that the invention seeks to solve]

By the way, in the method for manufacturing a resin laminate having an embossed effect that matches the pattern, (the method using press molding in Section 11 requires a step of mechanically attaching an emboss that matches the pattern to a decorative sheet having a pattern) Not only is the process complicated, but it also has the disadvantage that the embossing on the decorative sheet is easily crushed.Also, in cases where the embossing process is carried out at the same time as press forming in section 2 (section 2), the pattern on the decorative sheet and the embossing are in sync. It has the disadvantage that it is difficult to obtain high-quality products.Furthermore, (3)
In the case where the post-emboss process is carried out, as in the case of item (2) above, it is difficult to synchronize the pattern and the emboss, and furthermore, the post-emboss process is complicated.

In addition, the process of pouring a cold-curing resin in item (4) is a process of mechanically attaching an embossing that matches the pattern to a decorative sheet having a pattern, or a process of casting a curable resin.

This method requires a curing step, which is not only complicated, but also has drawbacks such as limitations on the resins that can be used.

On the other hand, the method for producing a thermoplastic resin laminate having an embossed effect according to the present invention does not require a mechanical process for applying the emboss, so the process is simple, and the pattern and the emboss can be synchronized. The embossing effect is complete and the embossing effect is remarkable, and the embossing can be made high by selecting the conditions.

This is a method for producing a thermoplastic resin laminate, which has features such as being able to arbitrarily adjust the temperature of the thermoplastic resin laminate.

[Means for solving problems]

The first method of producing a thermoplastic resin laminate having an embossed effect according to the present invention is to form a pattern layer using printing ink on the top surface of the top layer or the bottom surface of the bottom layer of the thermoplastic resin layer in the thermoplastic resin laminate to be obtained. A decorative sheet made of a thermoplastic resin sheet having a printed pattern layer, and one or more thermoplastic resin layers in contact with the non-printed surface of the decorative sheet. A thermoplastic resin laminate is obtained by continuously laminating a laminating material consisting of a stacked body with a thermoplastic resin sheet serving as a resin layer by a roll lamination method. The stacked body used as the laminating material used in the method for producing a thermoplastic resin laminate of the first invention is heated at the same temperature as the printed pattern layer in the decorative sheet of the stacked body and the thermoplastic resin sheet. In other words, when the stacked body is subjected to heat and pressure during roll lamination, the thermal melting behavior of the printed pattern layer of the decorative sheet and the thermoplastic resin sheet in the stacked body is different. are different,
Moreover, in the stacked body, at least the printed pattern layer of the decorative sheet, the thermoplastic resin sheet, and the thermoplastic resin near the contact portion of the thermoplastic resin sheet in the thermoplastic resin layer that is in contact with the thermoplastic resin sheet are It has the property of melting, and in the first invention,
The heat involved in compression during roll lamination of such a stacked body is made up of at least two layers in the stacked body, the decorative sheet and the thermoplastic resin layer that is in direct contact with the non-printing surface of the decorative sheet. By roll laminating the plastic resin layer so that its thickness is compressed to 90 to 40 inches at the start of roll lamination, distortion is formed in the thermoplastic resin layer that is continuous with the printed pattern layer in the thickness direction. In other words, a thermoplastic resin laminate having an embossed effect that matches the pattern is obtained.

The second method for producing a thermoplastic resin laminate having an embossed effect according to the present invention is similar to the first method, in that the uppermost surface or the uppermost layer of the thermoplastic resin layer in the obtained thermoplastic resin laminate is To obtain a thermoplastic resin laminate in which a pattern layer made of printing ink is exposed on the lower surface of the lower layer,
A laminate consisting of a decorative sheet made of a thermoplastic resin sheet having a printed pattern layer, and a thermoplastic resin sheet that is in contact with the non-printing surface of the decorative sheet and serves as one or more thermoplastic resin layers. A thermoplastic resin laminate is obtained by continuously laminating materials using a roll lamination method. The stacked body used in the method for producing a thermoplastic resin laminate according to the second invention is different from the stacked body used in the method for producing a thermoplastic resin laminate according to the first invention. Similarly, the thermal melting behavior of the printed pattern layer of the decorative sheet and the thermoplastic resin sheet in the laminated body at the same temperature is different. When receiving, the thermal melting behavior of the printed pattern layer of the decorative sheet and the thermoplastic resin sheet in the stacked body is different, and at least the printed pattern layer of the decorative sheet and the thermoplastic resin sheet in the stacked body are different. The resin sheet has a property of melting the thermoplastic resin near the contact portion of the thermoplastic resin sheet in the thermoplastic resin layer that is in contact with the thermoplastic resin sheet. In the method for producing a thermoplastic resin laminate according to the second aspect of the invention, the stacked body is coated with a polyester film, a nylon film, a fluorine-based resin film, Roll lamination is carried out by contacting an intervening film selected from vinylon films, and the thermoplastic resin layer is in direct contact with at least the decorative sheet and the non-printing surface of the decorative sheet in the laminated body. Roll lamination is performed such that the thickness of the thermoplastic resin layer involved in compression during roll lamination consisting of two layers is compressed to 90 to 40% of the thickness at the start of roll lamination, and then the obtained laminate By removing the intervening film, distortion is formed in the thermal Mffi resin layer that is continuous with the printed pattern layer in the thickness direction of the target product, that is, it has an embossed effect that synchronizes with the pattern. This is to obtain a thermoplastic resin laminate.

The third method of manufacturing a thermoplastic resin laminate having an embossed effect according to the present invention is such that a pattern layer made of printing ink is exposed in the middle in the thickness direction of the thermoplastic resin layer in the obtained thermoplastic resin laminate. This method involves stacking a decorative sheet made of a thermoplastic resin sheet having a printed pattern layer and a thermoplastic resin sheet that becomes the thermoplastic resin layer in contact with the printed surface of the decorative sheet. A thermoplastic resin laminate is obtained by continuously laminating a combined body or a laminated body in which a thermoplastic resin sheet, which is another thermoplastic resin layer, is in contact with the laminated body by a roll lamination method. be. The stacked body used as the laminating material used in the method for producing a thermoplastic resin laminate according to the third aspect of the present invention is such that the printed pattern layer of the decorative sheet and the thermoplastic resin sheet in the stacked body are heated at the same temperature. In other words, when the stacked body is subjected to heat and pressure during roll lamination, the thermal melting behavior of the printed pattern layer of the decorative sheet and the thermoplastic resin sort in the stacked body is different. are different,
In addition, at least the printed pattern layer in the stacked body and the thermoplastic resin in the vicinity of the printed pattern layer including the portion in contact with the printed pattern layer have a property of melting.

In the third invention, the stacked body is a roll consisting of at least two layers of the decorative sheet and a thermoplastic resin layer that is in direct contact with the printed surface of the decorative sheet in the stacked body. Roll lamination is performed so that the thickness of the thermoplastic resin layer involved in compression during lamination is compressed to 90 to 40 mm at the start of roll lamination, so that it is continuous with the printed pattern layer in the thickness direction. Distortion is formed in the thermoplastic resin layer,
That is, a thermoplastic resin laminate with an embossed effect that matches the pattern is obtained.

The fourth method of producing a thermoplastic resin laminate having an embossed effect according to the present invention is similar to the third method, and includes rIU in the thickness direction of the thermoplastic resin layer in the obtained thermoplastic resin laminate. To obtain a thermoplastic resin laminate in which a pattern layer formed by printing ink is exposed, a decorative sheet made of a thermoplastic resin sheet having a printed pattern layer and a printed surface of the decorative sheet are used. A superimposed body with a thermoplastic resin sheet that is in contact with the thermoplastic resin layer, or a superimposed body with a thermoplastic resin sheet that is another thermoel plastic resin layer that is in contact with the superimposed body. A thermoplastic resin laminate is obtained by continuously laminating the thermoplastic resin laminate by a roll lamination method. This is because the thermal melting behavior of the printed pattern layer of the decorative sheet and the thermoplastic resin sheet in the stacked body at the same temperature is different, that is, when the stacked body is subjected to heat and pressure during roll lamination. The printed pattern layer of the decorative sheet and the thermoplastic resin sheet in the stacked body have different thermal melting behavior, and at least the printed pattern layer in the stacked body is in contact with the printed pattern layer. It has the property of melting the thermoplastic resin in the vicinity of the printed pattern layer, including the portion where the printed pattern layer is formed.In the invention of the water bottle 3, the overlapping body is On at least one side of my
An intervening film selected from among a polyester film, a nylon film, a fluorine-based resin film, and a vinylon film is brought into contact and roll laminated, and at least the decorative sheet in the laminated body is printed on the decorative sheet. The thickness of the thermoplastic resin layer involved in compression during roll lamination, which is composed of two layers with the thermoplastic resin layer in direct contact with the surface, is 90~
4%, and then remove the intervening film from the resulting laminate to obtain a thermoplastic resin that is continuous with the printed pattern layer in the thickness direction, which is the target product. A thermoplastic resin laminate is obtained in which the layers are distorted, that is, an embossed effect that matches the pattern appears.

In the method for manufacturing a thermoplastic resin M carcass having an embossed effect that matches the pattern of the sphagnum moss invention, the decorative sheet used in the laminated body as the laminating material is a thermoplastic resin sheet having a pattern layer formed by printing ink. For example, sheets of cellophane, acetate, polyethylene, polypropylene, polyester, polyvinyl chloride, polyvinylidene chloride, polystyrene, polycarbonate, polyvinyl alcohol, polyamide, etc. can be used as thermoplastic resin sheets, and have particularly good thermal welding performance and printing properties. Polyvinyl chloride sheets are most preferred in terms of suitability and low cost. The printed pattern layer in the decorative sheet is gravure.

The thermal melting behavior of the thermoplastic resin sheet on which the colored or colorless printed pattern layer is formed and the thermal melting behavior of the pattern layer differ at the same temperature when it is formed by a printing method such as screen, offset, flexo, or inoxyeth. For example, it is necessary that the two have different melting points.

Furthermore, when one of the thermoplastic resin layers in the laminated body, which is the laminated material, is composed of a thermoplastic resin layer that exhibits glitter, an embossing effect that synchronizes with the colored printed pattern layer can be obtained. It has been confirmed that the image becomes clearer. This thermoplastic resin layer having glittering properties is a layer that exhibits glittering properties by using so-called glittering pigments, such as aluminum pigments, pro/z pigments, pearl pigments, etc. In addition to sheets obtained by solid printing or coating with printing ink, sheets mixed with the pigments are used. especially,
The thermoplastic resin layer having glittering properties is preferably a kneaded sheet with a thickness of 10 μm or more from the viewpoint of uniformity.
A material with a diameter of about 70 μm is preferable because it is easy to handle. In addition, when the thermoplastic resin layer having glittering properties is a layer above the pattern layer, the resin layer needs to be transparent.

Furthermore, it goes without saying that the sheet formed by forming a colored pattern layer on the above-mentioned sheet serving as the thermoplastic resin layer having glittering properties can be used as a decorative sheet.

Said book No. 1. In the second invention, the conditions for laminating the stacked bodies, which are the materials for lamination, by the roll lamination method are as follows:
Thermoplasticity in the vicinity of the contact portion between at least the printed pattern layer constituting the decorative sheet, the thermoplastic resin sheet, and the thermoplastic resin sheet in the thermoplastic resin layer that is in contact with the thermoplastic resin sheet in the stacked body; The resin is melted, and the thickness of the thermoplastic resin layer involved in compression in the laminated body as the laminated material during roll lamination is compressed to 90 to 40% of the thickness at the start of roll lamination. It is necessary to perform lamination, and in addition, it is necessary to perform lamination. In the fourth invention, the conditions for laminating the stacked bodies, which are materials for lamination, by roll lamination include: heating during roll lamination;
Under pressure, at least the printed pattern layer of the decorative sheet in the laminated body and the thermoplastic resin near the pattern layer including the portion in contact with the printed pattern layer are melted, and the lamination is performed during roll lamination. It is necessary to carry out roll lamination in such a way that the thickness of the thermoplastic resin layer involved in compression in the stack of materials is compressed to 90 to 40 inches at the start of roll lamination. Therefore, in the method of manufacturing a thermoplastic resin laminate by the roll lamination method in each of the present inventions, the temperature and pressure during the lamination step are generally higher than in the conventional method. In each of the above-mentioned inventions, the thermoplastic resin layer that participates in compression in the laminated body that is the laminated material during roll lamination is the laminated material that becomes the thermoplastic resin layer in the thermoplastic resin laminate that is the target product to be obtained. For example, the intervening film in the second invention and the fourth invention is not a thermoplastic resin layer that participates in compression in the laminated material.

In addition, in the roll lamination step, if the thickness of the thermoplastic resin layer involved in compression in the laminated material exceeds 90% of the initial thickness, the embossed material that appears on the resulting laminate may If the effect is insufficient and the thickness of the thermoplastic resin layer is less than 40%, it may cause disturbances in the printed pattern layer appearing on the resulting laminate. Therefore, in order to obtain a thermoplastic resin laminate with a remarkable embossing effect and a stable printed pattern layer, the thickness of the thermoplastic resin layer involved in compression in the laminating material must be equal to or less than the initial thickness. It is preferable to perform coal lamination at a ratio of about 80 to 60%.

The intervening film used in the first invention and the third invention is a polyester film.

This film is selected from nylon film, fluororesin film, and vinylon film, and has heat resistance that will not cause heat welding to the laminating material surface or transfer belt surface due to heating and pressure during roll lamination. It has a non-stretch property when heated, that is, little elongation when heated, good peelability, and excellent surface strength, and a film having a thickness of about 6 to 100 μm is usually used.

〔Example〕

The specific structure of the method for producing a thermoplastic resin laminate having an embossed effect according to the present invention will be described below with reference to Examples.

The coal laminating device shown in the figure is an example of the device used in the method for producing a thermoplastic resin laminate of the present invention,
The stack of sheets fed out from the winding rollers 1, 2, 3 and 4 is connected to a pair of guide rollers 5 and 6,
Between the drive rollers 7.8 of the same pair of guide belts and the guide belt 9.10 made of stainless steel, which runs between the e-rollers 5, 6 and the drive rollers 7.8 of the guide belt. The thermoplastic resin laminate, which is the desired product, is obtained by roll lamination.

In addition, in the roll laminating apparatus, the reference numeral 11.12
The part indicated by is the hot plate.

Example 1 Using a roll laminating apparatus having the configuration shown in the drawings, a stacked body of an intervening film, a decorative sheet, an intermediate resin layer sheet, and a base resin layer sheet, which will be described below, was laminated to a thickness of 160'c. , 3 oKy/α2, 1 minute lamination conditions to obtain a thermoplastic resin laminate [■] of the decorative sheet, the intermediate resin layer sheet, and the base resin layer sealer.

25μ thick polyethylene terephthalate resin film.

Transparent polyvinyl chloride resin sheet with a granite-like printed pattern layer made of salted vinyl acetate/acrylic ink formed on the back side using gravure printing method [thickness 0.25 tone: plasticizer 30
parts〕.

Pearl clear film made of polyvinyl chloride resin into which 5 parts of pearl pigment is kneaded [thickness 0.07 a: 23 parts plasticizer].

Sheet for base resin layer in winding roller 4 Milky white polyvinyl chloride resin sheet [Thickness 0.33 m: Plasticizer 30
parts〕.

The obtained thermoplastic resin laminate CI) is shown in Table 1.

Each back screen is a smooth surface, and only the printing ink part of the granite-like printing pattern layer formed through the transparent surface layer protrudes upward in a convex shape, and the printing pattern layer is formed inside the laminate. It has an embossed effect that matches the tile, and has a novel design effect as a vinyl chloride resin tile.

Example 2 Using a roll laminating device having the configuration shown in the drawings, a stacked body of an intervening film, a decorative sheet, and a base resin layer sheet described below was laminated at 160'C.
, 40 Ky7 cm for 2.15 minutes to obtain a thermoplastic resin laminate CI+) of the decorative sheet and the base resin layer sheet.

The intervening film in the winding roller 1 is a polyethylene terephthalate resin film with a thickness of 25 μm.

A sheet with a stained glass-like printed pattern layer formed on the surface of a transparent PVC film (thickness Q, 15 g, plasticizer 23 parts).

Pearl clear film made of polyvinyl chloride resin into which 5 parts of pearl pigment is kneaded [thickness 0.0711111]
: Plasticizer 23 parts].

When the obtained thermoplastic resin laminate [11] was attached to a glass plate with an adhesive, the entire glass plate became translucent, and the printed pattern layer had an embossed effect that synchronized with the pattern layer. The appearance of cut glass-like stained glass was obtained.

[Action of the invention]

The method for producing a thermoplastic resin laminate having an embossed effect according to the Sphagnum moss invention includes a decorative sheet consisting of a thermoplastic resin sheet having a pattern layer formed by printing ink, and one or more layers of heat applied to the decorative sheet. This is a method for producing a thermoplastic resin laminate by continuously laminating a laminated material consisting of a thermo'5T plastic resin sheet, which becomes a plastic resin layer, by a roll lamination method. By melting and fluidizing the printed pattern layer in the body and two or more thermoplastic synthetic resin layers that are in contact with the printed pattern layer in the thickness direction, the heat in the decorative sheet is reduced.
'J plastic resin/-The distortion caused by the difference in flow behavior when melted at the same temperature as that of the printed pattern layer can be formed in the thermoplastic resin layer that is in contact with the pattern layer in the thickness direction, or The thermoplastic resin laminate is formed on a printed pattern layer and a thermoplastic resin layer that is in contact with the pattern layer in the thickness direction to obtain an embossed effect that synchronizes with the pattern.

In particular, in the second invention method and the fourth invention method,
Since the above-mentioned roll lamination is carried out with the intervening film in contact with at least one side of the upper and lower sides of the stacked body of the laminated materials, at least one of the upper and lower sides of the laminated materials is Since the degree of deformation in which one side extends in the horizontal direction is suppressed or prevented, the distortion caused by the difference in flow behavior of the thermoplastic resin sheet and the printed pattern layer in the aforementioned decorative sheet when they are melted at the same temperature. becomes more pronounced, and a thermoplastic resin laminate with a clear embossing effect that synchronizes with the printed pattern layer can be easily obtained.

The mechanism by which a thermoplastic resin laminate is obtained in which the above-mentioned distortion is formed in the thermoplastic resin layer during roll lamination in the water volume invention, resulting in an embossed effect in which the printed pattern layer protrudes upwards is obtained. It is estimated that the following rules apply.

In the first and second inventions, 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 in the decorative sheet, in the roll lamination step 1. When the temperature of the laminated material rises, the printed pattern layer portion first melts, and an intermediate layer is created in which the flow resistance in the horizontal direction with respect to the thickness direction of the laminated material between the melted portion and the guide belt or intervening film is reduced. After this stage has been achieved, a further step is to soften the entire material and to put it under pressure. For this reason, the thermoplastic resin layer in the laminated material starts to flow, but this flow is faster in areas near the guide belt or intervening film than in areas farther away, so it flows in the thickness direction. A distribution occurs in speed. and,
As described above, this flow is promoted in the printed 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 side belt or intervening film is small. 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. Further, in the third to fourth inventions, 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, the laminating material is When the temperature rises, the pattern layer portion first melts, and the thermoplastic resin sheet and thermoplastic resin layer at least in the upper and lower parts in the thickness direction of the pattern layer melt in the horizontal direction with respect to the thickness direction of the laminated material. After an intermediate stage has been achieved in which the flow resistance of the material is reduced, a further process is carried out in which the entire material is softened and placed under pressure. As a result, the thermoplastic resin layer in the laminated material begins to flow in the horizontal direction, but this flow is slower in areas near the guide belt or intervening film than in areas further away. A distribution occurs in the flow velocity in the direction. This flow is promoted in the printed pattern layer portion because the resistance to horizontal flow is reduced between the thermoplastic resin sheet i and the thermoplastic resin layer that are in contact with at least the top and bottom of the pattern layer. It is presumed that this is because the pressure in the faster speed section becomes greater, and in this state distortion occurs and becomes fixed.

Furthermore, in the first and second inventions, 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 sheet, the lamination material is When the temperature rises, first the non-printed pattern layer surface of the thermoplastic resin sheet in the decorative sheet melts, and the flow resistance in the horizontal direction with respect to the thickness direction of the laminated material between the melted part and the guide belt or intervening film increases. After the decreasing intermediate stage has been achieved, a further process is carried out in which the whole is softened and placed under pressure. As a result, the thermoplastic resin layer in the laminated material begins to flow, but this flow is faster in areas near the guide belt or intervening film than in areas farther away, so that the thickness of the laminated material increases. A distribution occurs in the flow velocity in the horizontal direction. This flow is promoted in the non-printing pattern layer portion of the thermoplastic resin sorting because the resistance of the core layer to the Ebert or intervening film is small, and the flow rate is faster in the portion where the flow rate is faster. It is presumed that this is because the pressure becomes larger, and under such conditions, distortion occurs and becomes fixed. Further, in the third to fourth inventions, 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 sheet, the lamination process is performed in the roll lamination process. When the temperature of the material rises, first the non-printing pattern layer surface of the thermoplastic resin sheet in Decoration/-1- melts, and the thermoplastic resin layer at least above and below the non-printing pattern layer surface melts.
After an intermediate stage has been achieved in which the horizontal flow resistance across the thickness of the laminated material is reduced, a further step is carried out in which the whole is softened and placed under pressure. This initiates a horizontal flow of the thermoplastic resin layer in the laminating material, but this flow is slower in areas near the intervening film than in areas farther away. Because it is slow, the flow velocity is distributed in the thickness direction. This flow is promoted in the non-printed pattern layer surface portion because the resistance to horizontal flow is reduced in the thermoplastic resin layer that is in contact with at least the top and bottom of the non-printed pattern layer surface in the thickness direction. It is presumed that this is because the pressure in the faster speed section becomes greater, and in this state distortion occurs and becomes fixed.

In the first and second inventions, the difference between 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 is 5.
It has been confirmed that a sufficiently effective embossing appears when the temperature is above °C, and in the third and fourth inventions, the thermoplastic phase @ (vehicle) It has been confirmed that a sufficiently effective embossing is produced when the difference between the melting point of the thermoplastic resin layer and the melting point of the thermoplastic resin layer directly in contact with the printed pattern layer is 5°C or more. 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. The practically usable melting point temperature difference is from 40'C to about 40'C.

In addition, in the first and second inventions, when the thermoplastic resin sheet constituting the decorative sheet and the thermoplastic resin layer in contact with the sheet have different thermal melting behavior, the embossing effect is further improved. In the third to fourth inventions, the embossing effect is even higher when the thermoplastic resin layers constituting both the upper and lower layers of the printed pattern layer in the decorative sheet have different thermal melting behavior. You can get something.

Furthermore, in the water volume invention, if a pattern layer exists at or near the center in the thickness direction of the thermo-TTI plastic resin layer in the laminated material applied to roll lamination, the emboss effect is difficult to appear, especially If the thermoplastic resins in the thermoplastic resin layers above and below the printed pattern layer are the same, it is difficult to achieve an emboss effect. It is preferable that the thermoplastic resin laminate be exposed above the center of the thermoplastic resin layer in the thermoplastic resin laminate.

〔Effect of the invention〕

The method for manufacturing a thermoplastic resin laminate having an embossed effect according to each of the present inventions does not require mechanical or chemical steps for applying embossing, so the manufacturing process is simple, and the thermoplastic resin laminate This is because the embossing effect is introduced due to the difference in behavior due to thermal melting between the thermoplastic resin layer and the printed pattern layer during roll lamination.
A thermoplastic resin laminate can be obtained that exhibits a perfect embossing effect in synchronization with the printed pattern layer. In addition, in the second invention and the third invention, an intervening film is in contact with at least one side of the top and bottom of the thermoplastic resin layer to be roll laminated, so that the thermoplastic resin layer is horizontally laminated during roll lamination. Since the degree of deformation extending in the direction is suppressed or prevented, the distortion caused by the difference in flow behavior due to thermal melting between the thermoplastic resin layer and the printed pattern layer becomes significant. A thermoplastic resin laminate can be obtained in which the emboss effect and the emboss effect are perfectly synchronized, and the emboss irregularities are clearly visible.

Since the method for producing a thermoplastic resin laminate having an embossed effect according to the present invention is a method for producing a laminate using roll lamination, a long thermoplastic resin laminate is continuously produced. The production efficiency is extremely good.

BRIEF DESCRIPTION OF THE DRAWINGS The figure is an explanatory diagram showing an example of a roll laminating apparatus used in the method for producing a thermal plastic resin laminate according to the present invention.

Claims (4)

[Claims] (1) A decorative sheet made of a thermoplastic resin sheet having a printed pattern layer and one or more thermoplastic resin layers in contact with the non-printed surface of the decorative sheet are stacked together using a roll lamination method. In a method for producing a thermoplastic resin laminate comprising continuous lamination, the printed pattern layer of the decorative sheet and the thermoplastic resin sheet in the laminated body have different thermal melting behavior at the same temperature, and When the stacked body is subjected to heating and pressure during roll lamination, at least the printed pattern layer in the decorative sheet, the thermoplastic resin sheet, and the thermoplastic resin layer in contact with the thermoplastic resin sheet in the stacked body are A stacked body in which the thermoplastic resin near the contact portion of the thermoplastic resin sheet is melted is a thermoplastic resin sheet that is in direct contact with at least the decorative sheet and the non-printing surface of the decorative sheet in the stacked body. By roll laminating in such a way that the thickness of the thermoplastic resin layer involved in compression during roll lamination consisting of two layers with the resin layer is compressed to 90 to 40% of the thickness at the start of roll lamination, the thickness direction A method for producing a thermoplastic resin laminate having an embossed effect, which comprises obtaining a thermoplastic resin laminate having distortion in the thermoplastic resin layer continuous to the printed pattern layer. (2) A decorative sheet made of a thermoplastic resin sheet having a printed pattern layer and one or more thermoplastic resin layers in contact with the non-printed surface of the decorative sheet are stacked together using a roll lamination method. In a method for producing a thermoplastic resin laminate comprising continuous lamination, the printed pattern layer of the decorative sheet and the thermoplastic resin sheet in the laminated body have different thermal melting behavior at the same temperature, and When the stacked body is subjected to heating and pressure during roll lamination, at least the printed pattern layer in the decorative sheet, the thermoplastic resin sheet, and the thermoplastic resin layer in contact with the thermoplastic resin sheet in the stacked body are A stacked body in which the thermoplastic resin near the abutting portion of the thermoplastic resin sheet melts is coated with polyester film, nylon film, fluororesin film, vinylon on at least one of the upper and lower sides of the stacked body. Roll laminating is performed by contacting an intervening film selected from among the films, and a thermoplastic resin layer directly contacting at least the decorative sheet and the non-printing surface of the decorative sheet in the laminated body. Roll lamination is performed such that the thickness of the thermoplastic resin involved in compression during roll lamination consisting of two layers is compressed to 90 to 40% of the thickness at the start of roll lamination, and then the obtained laminate is A thermoplastic resin laminate having an embossed effect characterized by obtaining a thermoplastic resin laminate having a strain in the thermoplastic resin layer that is continuous with the printed pattern layer in the thickness direction by removing the intervening film. Production method. (3) A stacked body of a decorative sheet made of a thermoplastic resin sheet having a printed pattern layer and a thermoplastic resin layer that is in contact with the printed surface of the decorative sheet, or another thermoplastic resin layer added to the stacked body. In a method for producing a thermoplastic resin laminate, which comprises continuously laminating stacked bodies to which resin layers are in contact by a roll lamination method, the printed pattern layer of the decorative sheet and the thermoplastic resin sheet in the stacked body are The thermal melting behavior at the same temperature is different,
and heating when the stacked body is roll laminated,
A stacked body in which at least the printed picture layer in the stacked body and the thermoplastic resin near the printed picture layer including the portion in contact with the printed picture layer melt when subjected to pressure,
The thickness of the thermoplastic resin involved in compression during roll lamination, which is composed of at least the decorative sheet and the thermoplastic resin layer directly in contact with the printed surface of the decorative sheet in the stacked body, is determined by the thickness of the thermoplastic resin that is involved in compression during roll lamination. To obtain a thermoplastic resin laminate having distortion in the thermoplastic resin layer that is continuous with the printed pattern layer in the thickness direction by roll laminating the material so that it is compressed to 90 to 40% of the starting degree of lamination. A method for producing a thermoplastic resin laminate having an embossed effect. (4) A stacked body of a decorative sheet made of a thermoplastic resin sheet having a printed pattern layer and a thermoplastic resin layer in contact with the printed surface of the decorative sheet, or another thermoplastic resin layer added to the stacked body. In a method for producing a thermoplastic resin laminate, which comprises continuously laminating stacked bodies to which resin layers are in contact by a roll lamination method, the printed pattern layer of the decorative sheet and the thermoplastic resin sheet in the stacked body are The thermal melting behavior at the same temperature is different,
and heating when the stacked body is roll laminated,
A stacked body in which at least the printed picture layer in the stacked body and the thermoplastic resin near the printed picture layer including the portion in contact with the printed picture layer melt when subjected to pressure,
On at least one of the upper and lower sides of the stacked body,
An intervening film selected from a polyester film, a nylon film, a fluorine-based resin film, and a vinylon film is brought into contact and roll laminated, so that at least the decorative sheet and the printed surface of the decorative sheet in the laminated body are in contact with each other. The thickness of the thermoplastic resin layer involved in compression during roll lamination, which is composed of two layers with the thermoplastic resin layer that is in direct contact with it, is 90 to 90 mm at the start of roll lamination.
The thermoplastic resin layer, which is continuous with the printed pattern layer in the thickness direction, is strained by roll laminating the layer so that it is compressed to 40%, and then removing the intervening film from the resulting laminate. 1. A method for producing a thermoplastic resin laminate having an embossed effect, the method comprising obtaining a thermoplastic resin laminate having an embossed effect.