JP4273836B2 - Building materials using biodegradable resin cross-linked foam - Google Patents

Building materials using biodegradable resin cross-linked foam Download PDF

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Publication number
JP4273836B2
JP4273836B2 JP2003148833A JP2003148833A JP4273836B2 JP 4273836 B2 JP4273836 B2 JP 4273836B2 JP 2003148833 A JP2003148833 A JP 2003148833A JP 2003148833 A JP2003148833 A JP 2003148833A JP 4273836 B2 JP4273836 B2 JP 4273836B2
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Japan
Prior art keywords
material
biodegradable resin
foam
laminated
mm
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Expired - Fee Related
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JP2004351628A (en
Inventor
善之 岡
淳 後藤
純一 田井中
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東レ株式会社
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Description

[0001]
BACKGROUND OF THE INVENTION
The present invention includes decorations such as floors and walls in public facilities such as nursery schools, kindergartens, nursing homes, gymnasiums, office buildings, hotels, general housing, rental housing, exhibition halls, prefabricated office equipment, partitions, furniture, and electrical appliances. At the same time, it relates to building materials for buffering purposes.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, floors around water such as kitchens, bathrooms, and washrooms that use a vinyl chloride resin foam (for example, see Patent Document 1) for the purpose of waterproofing and buffering are often used. However, since vinyl chloride resin generates dioxins during combustion, there is an environmental problem, and replacement with a non-halogen resin is desired. As a non-halogen resin, a polyolefin foam (see, for example, Patent Document 2) is known. However, building waste such as flooring is rarely completely separated at the time of dismantling, but is landfilled or incinerated, but resins such as polyolefin remain semi-permanently even when buried in the soil and are incinerated. Even in this case, the combustion heat is so high that the incinerator is damaged when disposed of in large quantities.
[0003]
In addition, corridors and staircases in ordinary houses, bathroom units, toilets, public facilities such as nursing homes and low-age education facilities, office equipment used in offices, partitions, etc., as composite wall materials for interiors, calcium carbonate and polyvinyl chloride ( (PVC) A resin-based foam board or the like coated with short fibers (see, for example, Patent Document 3), or a decorative member itself made of a cushioning material made of a skin or foam, is attached with an adhesive. (See, for example, Patent Document 4). This wall material also had a disposal problem at the time of disposal like the above flooring.
[0004]
In recent years, biodegradable resins have been developed as environmentally friendly plastics and are now on the market. It is conceivable to use this biodegradable resin foam as a building material (see, for example, Patent Document 5). However, the biodegradable resin foams currently on the market have not always been satisfactory as building materials.
[0005]
For example, when used as a flooring material, the foam breaks down and remains on the floor when re-stretching, so it is necessary to scrape off the foam, resulting in high construction costs and wrinkles during construction. There was a problem such as.
[0006]
The same applies to the wall material. Foam may break the material when peeled off, making it difficult to peel away from the wall, floor, ceiling, etc. for fine adjustment, and easy to refit In addition, there is a problem that the workability is inferior, for example, it is difficult to peel off easily.
[0007]
Therefore, there is a demand for development of building materials that are environmentally friendly and easily impart cushioning properties and workability.
[0008]
[Patent Document 1]
JP-A-8-28014 (paragraphs [0002] to [0004])
[0009]
[Patent Document 2]
JP 2001-123649 A (paragraphs [0002] to [0006])
[0010]
[Patent Document 3]
Japanese Examined Patent Publication No. 6-75940 (first page, left column, line 14 to second page, left column, line 36)
[0011]
[Patent Document 4]
JP 2002-4458 (paragraphs [0002] to [0005])
[0012]
[Patent Document 5]
JP-A-11-279911 (paragraphs [0007] to [0008])
[0013]
[Problems to be solved by the invention]
An object of this invention is to eliminate the environmental load at the time of disposal which is the problem of the conventional foam, and to provide the building material excellent in shock absorbing property and workability.
[0014]
[Means for Solving the Problems]
In order to solve this problem, the present invention has the following configuration. That is, the present invention
(1)(A) The degree of crosslinking is in the range of 15-60%,A crosslinked foam made of a biodegradable resin having a 25% compression set of 20% or less;(B) Any one selected from the group consisting of a cloth made of a biodegradable resin, a synthetic leather made of a biodegradable resin, and a film made of a biodegradable resin.Skin material,(C) Any one of a film made of a biodegradable resin and a cloth made of a biodegradable resinIt consists of a laminated sheet laminated with a reinforcing material.The biodegradable resin is at least one selected from the group consisting of polylactic acid, aliphatic polyester, and aromatic polyester.A building material characterized by that.
[0015]
(2)(A) The expansion ratio of the crosslinked foam is within the range of 10 to 25 times.The building material according to (1), which is characterized in that
[0016]
(3)(A) The thickness of the cross-linked foam sheet is in the range of 2 to 10 mm.The building material according to (1) or (2), wherein
[0017]
(4)(C) The thickness of the reinforcing material is in the range of 10 to 100 μm.The building material according to any one of (1) to (3).
[0018]
(5) The building material according to any one of (1) to (4), wherein the building material is a buffer floor material.
[0021]
(6)The laminated sheet is (B)Skin material,(C)Reinforcement,(A)A crosslinked foam of a biodegradable resin, and(D) Elongation is 10% or more, and contains a cloth made of natural fiber and / or biodegradable resin.The release material is composed of a laminated sheet laminated in this order (5).
[0024]
(7)(D)The release material is affixed to the cross-linked foam surface by frame lamination (5)Or(6) The buffer floor material according to any one of the above.
(8) The building material according to any one of (1) to (4), wherein the building material is a cushioning material for decoration.
[0025]
(9) The laminated sheet is(B)Skin material,(A)Cross-linked foam,(C)The reinforcing material is laminated in order, and the load at break of the laminated sheet is 2.5 to 25 N / mm (8) Cushioning material for decoration.
[0027]
(10) It is characterized by laminating an adhesive layer on a reinforcing material (8) Ma(9) A cushioning material for decoration.
Consists of.
[0028]
DETAILED DESCRIPTION OF THE INVENTION
The present invention(A) The degree of crosslinking is in the range of 15-60%,A crosslinked foam made of a biodegradable resin having a 25% compression set of 20% or less;(B) Any one selected from the group consisting of a cloth made of a biodegradable resin, a synthetic leather made of a biodegradable resin, and a film made of a biodegradable resin.Skin material,(C) Any one of a film made of a biodegradable resin and a cloth made of a biodegradable resinIt consists of a laminated sheet laminated with a reinforcing material.The biodegradable resin is at least one selected from the group consisting of polylactic acid, aliphatic polyester, and aromatic polyester.It is a building material characterized by that. Building materials as used in the present invention are public facilities such as nursery schools, kindergartens, nursing homes, gymnasiums, office buildings, hotels, ordinary houses, rental housing, exhibition halls, prefabricated buildings and office equipment, partitions, furniture, electrification Carpets used as interior decorations such as products, cushioning floor materials (cushion floors), wood floors, decorative cushioning materials that decorate walls, etc. are mentioned. From the viewpoint of buffering properties and design properties, cushioning flooring materials or decoration It is preferable to use a buffer material.
As a biodegradable resin used in the present invention,Consists of at least one selected from the group consisting of polylactic acid, aliphatic polyester, and aromatic polyesterThings.
[0029]
Examples of synthetic polymers include polylactic acid, polyethylene succinate obtained by polycondensation of ethylene glycol and succinic acid or succinic acid derivative, polybutylene succinate obtained by polycondensation of butanediol and succinic acid or succinic acid derivative, butanediol Polybutylene succinate adipate whose dicarboxylic acid is succinic acid and adipic acid or their derivatives, butanediol and succinic acid, and chain-extended with a carbonate compound such as diethyl carbonate. And aliphatic polyesters obtained by polycondensation of diols such as dicarboxylic acids and their derivatives.. LivingExamples of the decomposable aromatic copolymer polyester include polyethylene terephthalate / succinate copolymer, polyethylene terephthalate / adipate copolymer, polyethylene terephthalate / sebacate copolymer, polyethylene terephthalate / dodecadionate copolymer, polybutylene terephthalate / succinate. Copolymer, polybutylene terephthalate / adipate copolymer, polybutylene terephthalate / sebacate copolymer, polybutylene terephthalate / dodecadionate copolymer, polyhexylene terephthalate / succinate copolymer, polyhexylene terephthalate / Examples include an adipate copolymer, a polyhexylene terephthalate / sebacate copolymer, and a polyhexylene terephthalate / dodecadionate copolymer..
[0030]
Examples of natural polymers include starch, raw starch such as corn starch, wheat starch, and rice starch, processed starch such as acetate esterified starch, methyl etherified starch, and amylose..
[0031]
The copolymer of the component which comprises these biodegradable resin may be sufficient.
[0032]
These biodegradable resins may be used alone or in combination of two or more.
[0033]
These biodegradable resins are preferably polylactic acid, FatAliphatic and / or aromatic polyesterLe TreeIt is fat.
[0034]
The ratio of the biodegradable resin to the total resin components in the resin composition is not particularly limited, but is preferably 50% by weight or more, and more preferably 70% or more. If the amount of biodegradable resin is increased, the decomposition rate is increased and the deformability after decomposition is improved. Resin components other than biodegradable resins are not particularly limited. For example, ultra-low density polyethylene, low density polyethylene, linear low density polyethylene, medium density polyethylene, high density polyethylene, ultra high molecular weight polyethylene, polypropylene, ethylene- Propylene rubber, polyvinyl acetate, polybutene and the like can be added.
An additive component may be added as long as the effects of the present invention are not impaired. For example, pyrolytic foaming agents, crosslinking accelerators, organic peroxides, antioxidants, lubricants, thermal stabilizers, pigments, flame retardants, antistatic agents, nucleating agents, plasticizers, antibacterial agents, biodegradation as additives Accelerator, foaming agent decomposition accelerator, light stabilizer, ultraviolet absorber, anti-blocking agent, filler, deodorant, thickener, bubble stabilizer, metal harm inhibitor, etc. alone or in combination of two or more It may be added.
[0035]
In the present invention, it is necessary to use a cross-linked foam made of a biodegradable resin. The cross-linked foam is a closed foam and a fine foam having a fine diameter, and is soft and has a high resilience. In the case of a non-crosslinked foam, the buffering property is excellent, but a bottoming feeling is likely to appear depending on the expansion ratio and thickness.
Degree of crosslinkingIs 15 to 60%. The degree of crosslinking15~60In the range of%, seasickness phenomenon does not occur, there is a waist, and it does not float or peel off during construction, and has good followability to various shapes.
[0036]
In the present invention, the method of crosslinking the resin composition is not particularly limited, and examples thereof include a method of irradiating a predetermined dose of ionizing radiation, crosslinking with an organic peroxide, and silane crosslinking. In particular, when a method of irradiating with ionizing radiation is used, it is preferably used because a cross-linked foam having a good surface appearance and uniform bubbles can be obtained.
[0037]
The cross-linked foam made of the biodegradable resin of the present invention needs to have a 25% compression set of 20% or less. Preferably it is 10% or less. In other words, when the 25% compression set exceeds 20%, the recovery of the dent that occurs when a heavy object is placed on a building material such as a cushioning floor material or a decorative cushioning material or a large force is applied is small, and the surface unevenness Will stand out.
[0038]
The expansion ratio and thickness of the cross-linked foam vary depending on the building material due to the difference in use place, but cannot be generally stated. However, in the case of a buffer floor material, it is preferably in the range of 5 to 30 times, more preferably 7 to 25 times. is there. This is because when the expansion ratio is in the range of 5 to 30 times, there is no feeling of bottoming and an appropriate cushioning property as a flooring material is maintained. The thickness is preferably 1 to 10 mm, more preferably 2 to 9 mm. This is because if the thickness is in the range of 1 to 10 mm, the buffering property is sufficient, the seasickness phenomenon does not occur, and the construction is easy.
[0039]
In the case of a cushioning material for decoration, the range is preferably 5 to 50 times, more preferably 10 to 40 times. If the expansion ratio is in the range of 10 to 40 times, there is no feeling of bottoming, and an appropriate buffering property as a buffer wall material is maintained, which is preferable. The thickness of the crosslinked foam is preferably 2 to 10 mm, more preferably 2.5 to 9 mm. The thickness is preferably 10 mm or more when dealing with severe collisions such as prevention of injuries in sports facilities, etc., but the present invention mainly suppresses injuries such as falls that may occur in general buildings. Therefore, if it is within the above range, the buffering property is sufficiently secured and the construction becomes easy, which is preferable.
[0040]
The building material of the present invention has a skin material on one side for decoration and prevention of dirt. As a skin material,LivingCloth made of degradable resin, synthetic leather made of biodegradable resin, or film made of biodegradable resinForI can. A laminate of cloths is excellent in decorating properties, and in the case of a buffer floor material, it can be expected to have an effect such as being non-slip. Although it does not specifically limit as a cloth preferably used for the skin material of this invention, and a reinforcing material, The woven fabric or nonwoven fabric which consists of a long fiber or a short fiber, etc. are mentioned. In addition, synthetic leather or film is preferable because cleaning efficiency when soiled becomes high. Moreover, when using a film, there exists an advantage which can add a free decoration by printing on a crosslinked foam surface and a film, for example, and laminating | stacking so that the printing surface of a film may become a crosslinked foam side. Further, from the viewpoint of decorativeness, a material having a pattern on the skin material is preferably used.
[0041]
The thickness of the skin material is not unambiguous because the preferred range varies depending on the material, but is preferably 0.1 to 2 mm from the viewpoint of durability and buffering properties.
[0042]
In the present invention, the method for laminating the skin material is not particularly limited, and examples thereof include heat sealing and use of an adhesive.
[0043]
In the present invention, the material used for the reinforcing material is preferably a resin having a melting point of 100 degrees or more. This is because, by using a resin having a melting point of 100 degrees or more, for example, even when hot water is spilled, the laminated ornament does not wavy due to heat shrinkage.
[0044]
As a reinforcing material,LivingFilm-like sheet made of degradable resin orIs rawA cloth made of a degradable resin can be mentioned. As a reinforcing materialIs thinIt is preferably a film-like sheet having a high breaking strength.
[0045]
The thickness of the reinforcing material is preferably 10 μm to 100 μm. It is because it has the intensity | strength which can fully support an outer_skin | epidermis material and can also hold buffer property because thickness is the range of 10 micrometers-100 micrometers. Furthermore, when the cushioning material for decoration is used, if the thickness of the reinforcing material is in the range of 10 μm to 100 μm, the breaking point load of the laminated sheet is 2.5 to 25 N / mm, which is equal to or higher than the adhesive strength of the adhesive. This is because the decorative cushioning material can be peeled off without destroying the material at the time of modification or re-installation after construction, and there is sufficient flexibility for bending. Preferably, it is 20-100 micrometers, More preferably, it is 30-60 micrometers.
[0046]
When the laminated sheet of the present invention is used as a buffer floor material, it is preferable to further laminate a release material. The release material can be used without limitation as long as it is a stretchable material that can provide a release effect, but preferably includes a fabric made of natural fibers and / or biodegradable resins. More preferably, the elongation is 10% or more as measured by JIS-L-1906. This is because if the elongation is 10% or more, it can follow the bending at the time of construction and folds are not easily generated. Although it does not specifically limit as a cloth preferably used for the mold release material of this invention, The woven fabric or nonwoven fabric which consists of a long fiber or a short fiber, etc. are mentioned.
[0047]
When the laminated sheet of the present invention is used as a buffer floor material, the order of lamination of the skin material, the reinforcing material, the cross-linked foam, and the release material is not particularly limited, but the skin material, the reinforcing material, the cross-linked foam, and the release material are not limited. It is preferable that the shape members are laminated in this order. By stacking in this order, creases and wrinkles during construction are eliminated. The order of the steps of laminating each layer is not particularly limited. For example, a reinforcing material is laminated on one side of the crosslinked foam, a skin material is further laminated thereon, and a release material is laminated on the opposite side of the crosslinked foam. It is preferably produced by laminating.
[0048]
In addition, although it does not specifically limit as a method of sticking a mold release material on the bridge | crosslinking foam surface, Preferably a frame laminate is used. This is because if an adhesive or the like is used, the adhesive strength is too strong, and there is a concern that the cross-linked foam may be destroyed during restretching. In the case of the frame laminating method, the concern is small.
[0049]
The thickness of the buffer floor material of the present invention is not particularly limited, but is preferably more than 1 mm and 13 mm or less. More preferably, it is 1.2 mm or more and 12 mm or less.
[0050]
Although the use of the buffer floor material of the present invention is not particularly limited, for example, it can be suitably used as a floor material for an exhibition hall, a prefabricated construction site, a rental apartment, an apartment, a residence, a classroom, a gymnasium, an office, a hotel, etc. .
[0051]
When the laminated sheet of the present invention is used as a decorative cushioning material, the laminated sheet preferably has a breaking point load of 2.5 to 25 N / mm. If it is 2.5 N / mm or less, it will be less than the adhesive strength of ordinary pressure-sensitive adhesives, so the decorative cushioning material may break down during repair and re-installation after construction, and peeling may not be successful. However, sufficient flexibility cannot be obtained. If it is 25 N / mm or more, folding wrinkles or floating may occur in the acute angle part, and the workability may deteriorate. The breaking point load of the laminated sheet is preferably 5.0 to 25 N / mm, more preferably 6.0 to 23 N / mm.
[0052]
As a method of setting the breaking point load of the laminated sheet in the above range, the skin material, the crosslinked foam, and the reinforcing material are laminated in this order, the thickness of the crosslinked foam is 2 to 10 mm, and the thickness of the reinforcing material is 10 to 100 μm. An example is a laminated sheet.
[0053]
In the present invention, the method of laminating the reinforcing material is not particularly limited, but when a film sheet is used as the reinforcing material, a method of adhering with an adhesive or an adhesive is preferable. When a reinforcing material of the same resin as that of the crosslinked foam is used, fusion by extrusion lamination is preferable.
[0054]
When the laminated sheet of the present invention is used as a cushioning material for decoration, it is preferable to laminate an adhesive layer on the reinforcing material. This is because the reinforcing material has been subjected to adhesive processing, so that it can be directly applied to the substrate.
[0055]
The thickness of the decorative cushioning material of the present invention is not particularly limited, but is preferably more than 2 mm and 13 mm or less. More preferably, it is 2.7 mm or more and 11 mm or less.
In the present invention, the construction method of the decorative cushioning material is not particularly limited, but before construction, the surface of the construction object (base material) is wiped with a neutral detergent, and after removing oil and deposits, the base material surface Dry. Next, an adhesive or a pressure-sensitive adhesive is applied to the base material, and a decorative cushioning material is applied. If the reinforcing material has been subjected to adhesive processing, it is applied directly to the substrate. The base material to be constructed is not particularly limited, and examples thereof include metals such as iron and aluminum, wood, concrete, PVC sheet, and FRP. Although the curing time of the adhesive and the pressure-sensitive adhesive varies depending on the kind of the adhesive and the curing agent and the blending ratio, the maximum adhesive force is exhibited in 24 hours at the longest, so that the construction is completed after aging for 24 hours.
[0056]
Although the use of the buffer wall material of the present invention is not particularly limited, for example, office equipment, partition surface buffer material, and also a buffer wall material for public facilities such as corridors and stairs, toilets, nursing homes and low-age education facilities, pillars, It can be suitably used as a protective cushioning material that covers the corners of the desk.
[0057]
【Example】
Next, this invention is demonstrated based on an Example. The measurement method and evaluation criteria in the present invention are as follows.
[0058]
1. Crosslinking degree of crosslinked foam
50 mg of the foam sheet is weighed and immersed in 25 ml of chloroform at 25 ° C. for 3 hours, and then filtered through a 200 mesh stainless steel wire mesh, and the wire mesh insoluble matter is vacuum dried. Next, the weight of this insoluble matter was precisely weighed, and the degree of crosslinking was calculated as a percentage according to the following formula.
Degree of crosslinking (%) = {weight of insoluble matter (mg) / weight of weighed crosslinked foam (mg)} × 100
2. Foaming ratio
The expansion ratio is defined as the reciprocal of the apparent density of the crosslinked foam measured according to JIS K6767.
[0059]
3. Cross-linked foam thickness
The cross-linked foam was cut into 10 × 10 cm, and the center portion was measured according to JIS K-6767.
[0060]
4). Each component layer thickness of the laminated sheet
The laminated sheet is sliced in the direction from the skin material to the reinforcing material with a single-blade razor, and the cross-section is designated by Keyence Corporation's microwatcher (VH-7000) at a magnification of 25 times, and the interface of each layer is designated. The thickness of each component layer of the laminated sheet is measured using a two-point distance measuring function that automatically measures the thickness.
[0061]
5.25% compression set
The 25% compression set was calculated by the following method according to JIS K-6767. That is, the cross-linked foams are stacked so that sheet-like samples whose upper and lower surfaces are parallel and whose periphery is cut are stacked so that the outer dimensions are 50 mm in length, 50 mm in width, and 25 mm in thickness. The thickness of this is precisely measured, sandwiched between predetermined test devices, compressed and fixed by 25% of the thickness of the test piece, and left in a standard state for 22 hours continuously. Then, after removing a test piece and leaving it to stand in the place of a standard state for 24 hours, the thickness of the same location as before is measured, and it calculates according to the following formula | equation.
C = (t0−t1) / t0 × 100
C: 25% compression set (%)
t0: initial thickness (mm) of the test piece
t1: Thickness (mm) of the test piece after the test.
[0062]
6). Break point load
A laminate sheet laminated in the order of skin, crosslinked foam, and reinforcing material is punched in dumbbell shape No. 2 according to JIS K-6301, both ends are set in a tensile tester, and stress when the reinforcing material breaks Measure strength.
[0063]
7. Release material elongation
The release material was punched with a dumbbell and measured according to JIS-L-1906.
[0064]
8). Biodegradable
Biodegradability was evaluated according to JIS K6953. Evaluation was made by putting a predetermined amount of a pulverized foam into compost set to 58 ± 2 ° C., and quantifying the amount of carbon dioxide generated after a certain period of time by gas chromatography.
Biodegradability ○ ・ ・ ・ Degradation rate after 45 days is 40% or more
Biodegradability x ... Degradation rate after 45 days is less than 40%.
[0065]
9. Workability
The laminated sheet was cut into 30 × 30 cm and applied to the concrete with an aqueous adhesive (Sincol SG-10). The adhesive strength reached the maximum value at 24 hours at room temperature, and after standing for 24 hours, the laminated sheet was peeled off, and the presence or absence of material destruction of the laminated sheet was visually determined.
Judgment criteria are as follows.
○: No material destruction
X: Material destruction occurred.
[0066]
[Reference Example 1]
"Bionore" # 1003 (Showa High Polymer Co., Ltd.) 100 kg, polybutylene succinate (PBS) as a biodegradable resin, 5.0 kg of azodicarbonamide (Yewa Kasei Kogyo Co., Ltd.) as a foaming agent, cross-linking 3.0 kg of 1,6-hexanediol dimethacrylate (manufactured by Mitsubishi Rayon Co., Ltd.) as an accelerator and Irganox. 245 (manufactured by Ciba Specialty Chemicals), AO-412S (manufactured by Asahi Denka Kogyo Co., Ltd.), respectively, 0.3 kg of the foaming agent is not decomposed. It was introduced into an extruder, extruded from a T-die, and molded into a crosslinked foamed sheet having a thickness of 1.5 mm. This sheet was irradiated with an electron beam of 55 kGy at an acceleration voltage of 800 kV and crosslinked, and then continuously introduced into a vertical hot-air foaming apparatus, heated and foamed at 230 ° C. for 4 minutes, and wound up as a continuous sheet-like crosslinked foam. .
[0067]
The thickness of the crosslinked foam thus obtained was 3.0 mm, the degree of crosslinking was 38%, the expansion ratio was 12 times, and the 25% compression set was 2.5%.
[0068]
[Reference Example 2]
A crosslinked foam was prepared in the same manner as in Example 1 except that “Bionore” # 3003 (manufactured by Showa Polymer Co., Ltd.), which is polybutylene succinate adipate (PBS / A), was used as the biodegradable resin. did.
[0069]
The thickness of the crosslinked foam thus obtained was 3.0 mm, the degree of crosslinking was 40%, the expansion ratio was 15 times, and the 25% compression set was 2.8%.
[0070]
[Reference Example 3]
Crosslinking was performed in the same manner as in Example 1 except that “Ecoflex” (manufactured by BASF Japan), which is polybutylene succinate terephthalate (PBT / A), was used as the biodegradable resin, and the irradiation dose was 80 kGy. A foam was created.
[0071]
The thickness of the crosslinked foam thus obtained was 2.8 mm, the degree of crosslinking was 22%, the expansion ratio was 15 times, and the 25% compression set was 2.8%.
[0072]
[Reference Example 4]
As a biodegradable resin, 100 kg of “Bionole” # 1003 (manufactured by Showa Polymer Co., Ltd.) which is polybutylene succinate (PBS) and 0.5 kg of talc were kneaded in a tandem extruder heated to 160 ° C. From the middle of the cylinder, 15 parts by weight of dichlorodifluoromethane per 100 parts by weight of the mixed resin was injected and extruded from the T-die into the atmosphere to create a foam.
[0073]
The foam thus obtained had a thickness of 4.0 mm, a degree of crosslinking of 0%, an expansion ratio of 25 times, and a 25% compression set of 23%.
[0074]
[Reference Example 5]
Polylactic acid (PLA) (manufactured by Cargill (USA)) was extruded from a T-die at 200 ° C. with a 30 mmφ single-screw extruder, quenched with a casting roll to obtain an unstretched sheet of about 300 μm, and then a film with an infrared heater The temperature was set to 75 ° C., and roll stretching was performed 2.6 times in the longitudinal (longitudinal) direction. Next, the film after longitudinal stretching was preheated at 75 ° C. in a tenter, and then stretched 2.4 times in the transverse (width) direction with respect to the film width before longitudinal stretching in a stretching zone set at 75 ° C. to a thickness of 45 μm. A polylactic acid film was obtained.
[0075]
[Reference Example 6]
Polylactic acid (PLA) (manufactured by Cargill (USA)) was used and melt-spun from a round spinneret at a spinning temperature of 200 ° C. and a single hole discharge rate of 1.00 g / min. Next, the spun yarn shape was cooled with a cooling air flow, and subsequently taken up at 3000 m / min with an air soccer ball, which was opened and deposited on the collecting surface of a moving conveyor to form a web. Next, the web was passed through a partial thermocompression bonding apparatus composed of an embossing roll, and the roll temperature was 140 ° C., the crimping area ratio was 14.9%, and the crimping point density was 21.9 / cm.2 20 g / m per unit area consisting of long fibers with a single yarn fineness of 3.0 denier, partially thermocompression bonded under a linear pressure of 30 kg / cm.2A polylactic acid nonwoven fabric was obtained.
[0076]
[Example 1]
Prepared by laminating the polylactic acid nonwoven fabric of Reference Example 6 on one side of the cross-linked foam of Reference Example 1 and adhering the polylactic acid film of Reference Example 5 adhered to both sides to the other foam surface. Polylactic acid resin was extruded and laminated to a thickness of 0.2 mm to form a buffer flooring.
[0077]
This thing was affixed on the mortar floor surface with the water-system adhesive agent (Sincol SG-10). At this time, corners that were difficult to set at the wall were completely covered, and no creases were generated.
[0078]
[Example 2]
The polylactic acid nonwoven fabric of Reference Example 6 was bonded to one side of the cross-linked foam of Reference Example 2 with a frame laminate. A product obtained by adhering the polylactic acid film of Reference Example 5 to one foam surface was prepared, and a polylactic acid resin sheet (thickness 0.2 mm) was adhered and laminated on the surface to obtain a buffer floor material. This was affixed to the concrete floor with a water-based adhesive (Sincol SG-10). At this time, because it was constructed on a protruding portion such as a column, it was folded at 90 degrees in the direction of the skin, but no creases occurred, and the landscape was excellent. When the biodegradability of this product was evaluated, the weight decreased by 30% or more after one year, and a degradation change was observed.
[0079]
[Example 3]
Prepare a product in which a circular knitted fabric is frame laminated on one side of the crosslinked foam of Reference Example 3 and the polylactic acid film of Reference Example 5 is adhered to the other foam surface, and a polylactic acid fabric is adhered to this surface. And laminated to make a buffer flooring. This thing was affixed on the mortar floor surface with the water-system adhesive agent (Sincol SG-10). At this time, because it was constructed on a protruding portion such as a column, it was folded at 90 degrees in the direction of the skin, but no creases occurred, and the landscape was excellent.
[0080]
[Example 4]
A polylactic acid sheet (thickness: 0.1 mm) having a wood grain pattern on the crosslinked foam of Reference Example 1 was adhered and laminated with a polyurethane adhesive. The other cross-linked foam surface is bonded to the polylactic acid film of Reference Example 5 which has been subjected to double-sided adhesive processing (adhesive: acrylic copolymer) to create a laminated sheet having a breaking point load of 3 N / mm, and a decorative buffer. A material was used. In addition, the pressure-sensitive adhesive applied to the polylactic acid film on the surface to be bonded to the cross-linked foam is double the amount of the hardener added to the pressure-sensitive adhesive on the opposite side, and the adhesive force between the cross-linked foam and the polylactic acid film is the opposite side. It was set to be higher than the amount.
[0081]
[Example 5]
A PBS resin sheet (thickness 0.2 mm) was bonded to the crosslinked foamed material of Reference Example 3 and laminated.
The polylactic acid film of Reference Example 5 which was subjected to double-sided adhesive processing was adhered to the other foam surface to prepare a laminated sheet having a breaking point load of 23 N / mm, which was used as a cushioning material for decoration. In addition, in the polylactic acid film which carried out double-sided adhesive process, what used the adhesive force of the surface made to adhere | attach on foam | foam higher than the other side was used.
[0082]
[Example 6]
PBS / A resin (thickness: 50 μm) was bonded to the crosslinked foam of Reference Example 2 by extrusion lamination, and a polylactic acid sheet (thickness 50 μm) with a marble pattern was bonded to the other foam surface. A laminated sheet having a point load of 6 N / mm was prepared and used as a cushioning material for decoration.
[0083]
[Example 7]
A PBS resin sheet (thickness: 0.1 mm) with a floral pattern was bonded to the crosslinked foamed material of Reference Example 1 and laminated. This is set in a heat molding machine with the skin facing up and fixed on a 100cm x 135cm square, and heated so that the surface temperature becomes 120 ° C. Pressing with a vertical interval of 2cm, a horizontal interval of 90cm, and a groove width of 2mm The mold was compressed from the skin surface and cooled to room temperature in this state. The polylactic acid film of Reference Example 5 which was subjected to double-sided adhesive processing on the non-grooved surface was bonded to prepare a laminated sheet having a breaking point load of 7 N / mm, which was used as a cushioning material for decoration. This was cut to obtain a cushioning material having a lateral width of 90 cm, a longitudinal width of 4.2 cm, and a groove of 2 mm in the middle of the longitudinal direction. When this was laminated so that the groove hits the corner of the table top plate and the side plate, it could be neatly bonded to the 90-degree corner formed by the table top and the side plate.
[0084]
[Comparative Example 1]
A non-woven fabric (Oji) on one side of a cross-linked foam (Toray Pef 25020AP66 manufactured by Toray Industries, Inc. (polypropylene (PP), thickness 2 mm, degree of cross-linking 37%, expansion ratio 25 times, 25% compression set 4.5%)) A paper laminate made by Kinocross Co., Ltd. was prepared, and a 10 μm thick PET film with a double-sided adhesive was adhered to the other foam surface. PP resin was extruded to a thickness of 0.2 mm on the foam surface. A laminated sheet was prepared by laminating and used as a buffer floor material. This thing was affixed on the mortar floor surface with the water-system adhesive agent (Sincol SG-10). At this time, corners that were difficult to set at the wall were completely covered, and no creases were generated.
[0085]
[Comparative Example 2]
Prepare a product obtained by laminating the polylactic acid nonwoven fabric of Reference Example 6 on one side of the foam of Reference Example 4 and adhering the polylactic acid film of Reference Example 5 adhered to both sides of the other foam surface. A polylactic acid resin was extruded and laminated to a thickness of 0.2 mm to form a buffer flooring.
[0086]
This thing was affixed on the mortar floor surface with the water-system adhesive agent (Sincol SG-10). At this time, the depression formed when the buffer floor material was pressed to completely cover the corners that were difficult to set on the wall did not recover, and the construction was terrible with irregularities on the surface.
[0087]
[Comparative Example 3]
Except for the absence of polylactic acid film, a laminate having the same structure as in Example 4 was constructed in the same manner as in Example 4. However, when the position was adjusted, the cross-linked foam was destroyed and remained on the concrete wall. Met.
[0088]
[Table 1]
[0089]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, the environmental impact at the time of disposal can be eliminated, and the building material excellent in buffer property and workability can be provided.

Claims (10)

  1. (A) a cross- linked foam made of a biodegradable resin having a degree of cross-linking in the range of 15 to 60% and a 25% compression set of 20% or less, and (B) a cloth made of biodegradable resin, A skin material that is one type selected from the group consisting of a synthetic leather made of a degradable resin and a film made of a biodegradable resin , and (C) a film made of a biodegradable resin, and a biodegradable resin Ri Do a laminate sheet and reinforcing material is any type of fabric has been laminated, the biodegradable resin, such at least one selected from the group consisting of polylactic acid, aliphatic polyesters, and aromatic polyesters Rukoto A building material characterized by
  2. (A) The building material according to claim 1, wherein the foaming ratio of the crosslinked foam is within a range of 10 to 25 times .
  3. (A) The building material according to claim 1 or 2, wherein the cross-linked foam sheet has a thickness of 2 to 10 mm .
  4. (C) The thickness of a reinforcing material exists in the range of 10-100 micrometers , The building material in any one of Claims 1-3 characterized by the above-mentioned.
  5. The building material according to any one of claims 1 to 4, wherein the building material is a buffer floor material.
  6. The laminated sheet is (B) a skin material, (C) a reinforcing material, (A) a cross-linked foam made of a biodegradable resin, and (D) an elongation of 10% or more, natural fibers and / or biodegradable 6. The buffer floor material according to claim 5, wherein the release material comprising a resin cloth is a laminated sheet laminated in this order.
  7. The cushioning flooring material according to claim 5 or 6 , wherein (D) the release material is attached to the surface of the crosslinked foam by frame lamination.
  8. The building material according to any one of claims 1 to 4, wherein the building material is a cushioning material for decoration.
  9. The laminated sheet is laminated in the order of (B) skin material, (A) crosslinked foam, (C) reinforcing material, and the breaking point load of the laminated sheet is 2.5 to 25 N / mm. The decorative cushioning material according to claim 8 .
  10. Decorative cushioning material according to claim 8 or 9, characterized in that formed by laminating an adhesive layer on the reinforcing member.
JP2003148833A 2003-05-27 2003-05-27 Building materials using biodegradable resin cross-linked foam Expired - Fee Related JP4273836B2 (en)

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JP2007303206A (en) * 2006-05-12 2007-11-22 Kaneka Corp Vibration isolation structure of concrete construction
JP2011515605A (en) * 2008-03-24 2011-05-19 バイオベーション,エルエルシーBiovation,LLC Biolaminate composite assembly and related methods
JP5473462B2 (en) 2009-08-06 2014-04-16 株式会社泉精器製作所 Rotary electric razor
KR101302335B1 (en) * 2009-09-23 2013-08-30 (주)엘지하우시스 Flooring material and preparation method thereof
EP2554370B1 (en) * 2010-03-31 2017-10-11 LG Hausys, Ltd. Board complex having a pla cover
KR101404296B1 (en) * 2010-06-07 2014-06-09 (주)엘지하우시스 Textile fabric flooring material using polylactic acid resin

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