JP3522920B2 - Method for producing thermoplastic resin sheet having cloud pattern - Google Patents

Method for producing thermoplastic resin sheet having cloud pattern

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Publication number
JP3522920B2
JP3522920B2 JP26910095A JP26910095A JP3522920B2 JP 3522920 B2 JP3522920 B2 JP 3522920B2 JP 26910095 A JP26910095 A JP 26910095A JP 26910095 A JP26910095 A JP 26910095A JP 3522920 B2 JP3522920 B2 JP 3522920B2
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Japan
Prior art keywords
thermoplastic resin
rolling
sheet
step
method
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Expired - Fee Related
Application number
JP26910095A
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Japanese (ja)
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JPH0985763A (en
Inventor
文久 梅田
仁 田島
栄一 田島
潔彦 近藤
Original Assignee
株式会社タジマ
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Application filed by 株式会社タジマ filed Critical 株式会社タジマ
Priority to JP26910095A priority Critical patent/JP3522920B2/en
Publication of JPH0985763A publication Critical patent/JPH0985763A/en
Application granted granted Critical
Publication of JP3522920B2 publication Critical patent/JP3522920B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a method for producing a thermoplastic resin having a cloud pattern.

[0002]

2. Description of the Related Art Floor materials and wall materials made of a thermoplastic resin, particularly vinyl chloride resin, are widely used, and in the field of floor materials, they are far superior to the linoleum floor materials which were once the mainstream. Is the reality.

However, a cloud pattern is one that can be realized with a linoleum floor material, but cannot be realized with a floor material made of a thermoplastic resin, particularly a vinyl chloride resin. If a thermoplastic resin such as vinyl chloride resin is used, is it due to the difference in heat fluidity with linoleum?
The pattern has a strong tendency to flow in a streak pattern and becomes a so-called marble pattern, and the reality is that a cloud pattern cannot be formed.

A typical method for producing a marble pattern close to a cloud pattern using a conventional vinyl chloride resin is to make a base color sheet with a kneading roll, transfer it to an open roll, and place it on the base color sheet. A heated thermoplastic resin pattern material is lightly kneaded while being sprinkled and cut out, and rolled into a marble pattern by rolling with a calendar, but the pattern flow is so strong that it is difficult to call a cloud pattern (( Property submission form submitted at the same time as the application
(See photo).

In the case of a tile made of a thermoplastic resin, the content of the filler is large and the content of the resin component is about as large as that of a floor material or a wall material made of a vinyl chloride resin, which is a long-sized thermoplastic resin. Since it is about 10 to 15 wt%, the composition does not easily flow, and in the state where banks are hardly formed in the calendar processing, in this aspect, it has a physical property and tends to be close to that of linoleum. A cloud-like pattern can be revealed (see the photo of the property submission form submitted at the same time as the application).

However, when a flooring material or a wall material made of a long thermoplastic resin is used, the raw material composition contains a small amount of filler and the resin content is 25 to 40 wt%, usually 30 to 35.
Since the amount of resin is larger than that of tiles such as wt%, a bank is formed by calendar processing, and the thermoplastic resin pattern material flows largely, resulting in a pattern that is not very cloudy.

[0007]

DISCLOSURE OF THE INVENTION The present invention is to provide a novel method for producing a thermoplastic resin sheet having a cloud pattern as in linoleum.

[0008]

SUMMARY OF THE INVENTION The present invention has two different colors.
Thermoplastic having a cloud pattern comprising a first step of rolling one or more kinds of thermoplastic resin chips on a rolling roll to form a rolled sheet and a second step of rolling the rolling sheet about 90 ° in the rolling direction back and forth and rolling on the rolling roll again. In the resin sheet manufacturing method, the length is 0.2 to 5.0.
The present invention relates to a method for producing a thermoplastic resin sheet having a cloud pattern, which comprises using the two or more types of thermoplastic resin chips containing 5 to 20% by weight of mm fiber in the thermoplastic resin chip.

Examples of the thermoplastic resin include polyvinyl chloride, vinyl chloride resins such as vinyl chloride-vinyl acetate copolymer, polyethylene, copolymers of ethylene and C 3 -C 8 α-olefins, polypropylene. And copolymers of propylene and C 4 to C 8 α-olefins. The most common are polyvinyl chloride and vinyl chloride resins.

Stabilizers, plasticizers, fillers, colorants, other additives, or reinforcing agents such as fibers can be added to the thermoplastic resin, if necessary. Especially when blending fibers, when calendering the composition, the fibers suppress the flow of the composition, the composition causes slippage on the calender roll surface, and it is easy to mold without forming a bank. Due to the ease of flow of the thermoplastic resin, the pattern flows too much, which helps to eliminate the drawback that it is difficult to obtain a cloud pattern.

The fiber may be in any form such as a single fiber or a twisted yarn, but a flat yarn is particularly preferable. The length of the fiber is about 0.2 to 5.0 mm, especially 0.3 to 2.0 m
It is preferable that the thickness is about m and the thickness is about 3 to 300 denier. The material of these fibers may be natural or synthetic, and may be organic or inorganic. Specific examples include rayon, nylon, polyacrylic, polyester, cotton, hemp, rock wool, and glass fiber. However, the melting points of these fibers must be such that they do not melt or soften during calendering. The amount used is 5 in the composition for chips.
Is about 20% by weight.

In the first step, it is not necessary to make a dense rolled sheet from the chips, but a porous, rough sheet-like material may be made. When the thickness is thinner than the target thickness, a plurality of these may be laminated and supplied to the second step. The method for forming the rolled sheet from the chips can be achieved, for example, by supplying the chips to the upper part between the rolling rolls which are horizontally provided with a constant interval.

In the second step, when a bank is formed between the rolling rolls, the ease of flow of the thermoplastic resin is emphasized. Therefore, the heating is supplied to the rolling rolls without forming the banks as much as possible. It is necessary to allow the sheet or plate of the formed thermoplastic resin to be rolled with a feeling of being peeled off by a rolling roll.

The rotating speeds of the opposing rolling rolls may be the same, but it is preferable that the rotating speeds are not the same because the feed sheet or plate is likely to be stripped.

The calendering temperature is preferably as low as possible so that the thermoplastic resin used can be calendered. This is also to prevent the thermoplastic resin from flowing too much. In particular, the better results are obtained when the roll temperature of the rolling roll is lower than the temperature of the chip layer supplied or the rolled sheet obtained in the first step. Therefore, it is preferable that the roll temperature of the first step is set higher than the roll temperature of the second step, and the roll temperature of the second step is set lower than the roll temperature of the first step.

The preferred roll temperature and chip layer or rolled sheet temperature when polyvinyl chloride or vinyl chloride resin is used are as follows. Upper roll temperature 100-160 ° C Lower roll temperature 100-160 ° C Chip layer or rolled sheet temperature 120-150 ° C

The thickness of the chips supplied to the roll in the first step is 0.5 to 5.0 mm, preferably 1.5 to 2.5 m.
m, and the size of the chip is 1 to 30 mm in length and 1 in width.
~ 30 mm, preferably 2-5 mm in length and 2-5 m in width
m, which allows the pattern to change from delicate to bold. The thickness of the rolled sheet when supplied to the second step is 2.0 to 10.0 mm, preferably 4 to 8 mm, but the thickness of the rolled sheet usually obtained by rolling chips is 0.5 to 3 mm. It is 0.0 mm, and preferably 1 to 2 mm in consideration of workability and the like. Therefore, when supplying rolled sheets to the second step, a plurality of laminated sheets may be stacked as necessary to have a predetermined thickness. Do it.

The rolled sheet obtained in the first step is subjected to the second rolling step while being heated to the lowest possible temperature for rolling. The rolling ratio at this time is not particularly limited, but it is preferable that the rolling ratio is about 1/2 to 1/16 of the original thickness.

The present invention will be described below with reference to examples, but the present invention is not limited thereto.

Example 1 A colorant (necessary amount) and 10 wt% of nylon fiber (thickness 30d, length 0.5 mm) were uniformly mixed with the composition consisting of the above composition, and the mixture was made into chips by a conventional method .
The fiber content in the composition was 9 wt%. ). The size of the chip was 2 mm in thickness and 10 × 10 mm in length × width. The two color chips thus obtained were mixed non-uniformly and fed to a calendar under the following conditions. Upper roll temperature 150 ° C. Lower roll temperature 150 ° C. Chip layer heating temperature 140 ° C. Thus, a rolled sheet having a relatively dense state and a thickness of 1.0 mm was obtained. This rolling sheet is rolled 90
A second rolling was carried out by turning. The rolling conditions are as follows. Upper roll temperature 105 ° C. Lower roll temperature 105 ° C. Rolling sheet heating temperature 110 ° C. As a result, the heated thermoplastic resin sheet was peeled off by the rolling rolls, and as a result, a sheet having a beautiful cloud shape and a thickness of 0.5 mm was obtained. Was given. This sheet was suitable as a long polyvinyl chloride floor material.

Example 2 The composition consisting of a colorant and rayon fibers (thickness 1
5d, length 0.5mm) 15wt% were uniformly mixed and made into chips by a conventional method (in this way, in the composition for chips
The fiber content was 13 wt% . ). The size of the chip was 2 mm in thickness and 15 × 15 mm in length × width. The two-color chips thus obtained were mixed non-uniformly with a green chip: white chip in a ratio of 2: 1 and fed to a calender under the following conditions. Upper roll temperature 140 ° C Lower roll temperature 140 ° C Chip layer heating temperature 130 ° C Thus, a rolled sheet with a relatively coarse density and a thickness of 4.5 mm (see Property Submission Form Photo No., circled number 6) was obtained. It was The rolled sheet was turned by 90 ° in the rolling direction and subjected to the second rolling. The rolling conditions at this time are as follows. Upper roll temperature 100 ℃ Lower roll temperature 100 ℃ Rolled sheet heating temperature 120 ℃ As a result, the heated thermoplastic resin sheet was peeled off by the rolling rolls, resulting in a beautiful cloud pattern (Property submission photo No. submitted at the same time as the application) (See circled number 4)
A sheet having a thickness of 1 mm was obtained. This sheet was suitable as a long vinyl chloride resin floor material.

[0022]

[Effect] According to the present invention, a cloud-shaped pattern that could only be formed with linoleum until now (Refer to Photo No. of the submission document)
It was possible to form a cloud-shaped pattern that was superior to that of linoleum by a relatively simple method.

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hitoshi Tajima 1-25-1 Miyagi, Adachi-ku, Tokyo Tajima Co., Ltd. (72) Inventor Eiichi Tajima 1-25-1 Miyagi, Adachi-ku, Tokyo Tajima Co., Ltd. (56) References JP-A-1-103415 (JP, A) JP-A-57-15922 (JP, A) (58) Fields investigated (Int.Cl. 7 , DB name) B29C 43/00-43 / 58

Claims (4)

(57) [Claims]
1. A first step of forming a rolled sheet by applying two or more types of thermoplastic resin chips of different colors to a rolling roll, and a second step of rotating the rolling sheet by about 90 ° in the rolling direction and rolling it again on a rolling roll. In the method for producing a thermoplastic resin sheet having a cloud-shaped pattern, the two or more types in which a thermoplastic resin chip contains 5 to 20% by weight of a fiber having a length of 0.2 to 5.0 mm.
A method for producing a thermoplastic resin sheet having a cloud pattern, which is characterized by using the thermoplastic resin chip.
2. A heated thermoplastic resin sheet or plate supplied to a rolling roll in the second step .
The method for producing a thermoplastic resin sheet having a cloud pattern according to claim 1, wherein the rolled sheet is rolled in front of a rolling roll under the condition that a bank is not formed.
3. The method for producing a thermoplastic resin sheet having a cloud pattern according to claim 1, wherein the rotating speeds of the rolls facing each other in the rolling rolls in the first step and / or the second step are different from each other. .
4. When the chips or the rolled sheet obtained in the first step is supplied to a rolling roll, the rolling temperature of the rolling roll is set lower than the temperature of the chips or the rolling sheet itself. Alternatively, the method for producing a thermoplastic resin sheet having a cloud pattern according to the above item 3.
JP26910095A 1995-09-22 1995-09-22 Method for producing thermoplastic resin sheet having cloud pattern Expired - Fee Related JP3522920B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP26910095A JP3522920B2 (en) 1995-09-22 1995-09-22 Method for producing thermoplastic resin sheet having cloud pattern

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP26910095A JP3522920B2 (en) 1995-09-22 1995-09-22 Method for producing thermoplastic resin sheet having cloud pattern

Publications (2)

Publication Number Publication Date
JPH0985763A JPH0985763A (en) 1997-03-31
JP3522920B2 true JP3522920B2 (en) 2004-04-26

Family

ID=17467677

Family Applications (1)

Application Number Title Priority Date Filing Date
JP26910095A Expired - Fee Related JP3522920B2 (en) 1995-09-22 1995-09-22 Method for producing thermoplastic resin sheet having cloud pattern

Country Status (1)

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JP (1) JP3522920B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005061211A1 (en) * 2003-12-23 2005-07-07 Lg Chem. Ltd. Amorphous marble flooring through two embo system and process of making the same

Also Published As

Publication number Publication date
JPH0985763A (en) 1997-03-31

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