JPH07242236A - Recoverable anti-slip polypropylene molded product - Google Patents
Recoverable anti-slip polypropylene molded productInfo
- Publication number
- JPH07242236A JPH07242236A JP6035692A JP3569294A JPH07242236A JP H07242236 A JPH07242236 A JP H07242236A JP 6035692 A JP6035692 A JP 6035692A JP 3569294 A JP3569294 A JP 3569294A JP H07242236 A JPH07242236 A JP H07242236A
- Authority
- JP
- Japan
- Prior art keywords
- slip
- molded product
- polypropylene
- slip material
- polypropylene molded
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000004743 Polypropylene Substances 0.000 title claims abstract description 58
- 229920001155 polypropylene Polymers 0.000 title claims abstract description 58
- -1 polypropylene Polymers 0.000 title claims abstract description 55
- 239000000463 material Substances 0.000 claims abstract description 43
- 229920005989 resin Polymers 0.000 claims abstract description 25
- 239000011347 resin Substances 0.000 claims abstract description 25
- 239000000203 mixture Substances 0.000 claims abstract description 14
- 229920002725 thermoplastic elastomer Polymers 0.000 claims abstract description 14
- 238000007789 sealing Methods 0.000 claims abstract description 4
- 238000005187 foaming Methods 0.000 claims description 5
- 238000001746 injection moulding Methods 0.000 claims description 4
- 229920001577 copolymer Polymers 0.000 description 10
- 229920001971 elastomer Polymers 0.000 description 10
- 239000005060 rubber Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 6
- 238000000465 moulding Methods 0.000 description 6
- VXNZUUAINFGPBY-UHFFFAOYSA-N 1-Butene Chemical compound CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 description 4
- 229920000181 Ethylene propylene rubber Polymers 0.000 description 4
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 4
- 150000001336 alkenes Chemical class 0.000 description 3
- 239000006260 foam Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 3
- 229920002857 polybutadiene Polymers 0.000 description 3
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000005062 Polybutadiene Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000004088 foaming agent Substances 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 150000004678 hydrides Chemical class 0.000 description 2
- 229920000098 polyolefin Polymers 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 239000004711 α-olefin Substances 0.000 description 2
- WSSSPWUEQFSQQG-UHFFFAOYSA-N 4-methyl-1-pentene Chemical compound CC(C)CC=C WSSSPWUEQFSQQG-UHFFFAOYSA-N 0.000 description 1
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 150000001993 dienes Chemical class 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- YWAKXRMUMFPDSH-UHFFFAOYSA-N pentene Chemical compound CCCC=C YWAKXRMUMFPDSH-UHFFFAOYSA-N 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920001195 polyisoprene Polymers 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229920001935 styrene-ethylene-butadiene-styrene Polymers 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 229920001897 terpolymer Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/80—Packaging reuse or recycling, e.g. of multilayer packaging
Landscapes
- Pallets (AREA)
- Laminated Bodies (AREA)
Abstract
(57)【要約】
【目的】 本発明は、使用されて古くなったり、破損し
たりしても、粉砕して成形し直すことの容易な、防滑材
が取り付けられたポリプロピレン成形品を提供する。
【構成】 ポリプロピレン成形品に滑り止め材を熱融着
してなる防滑性ポリプロピレン成形品であって、上記滑
り止め材が多層構造とされており、滑り止め材の成形品
に融着される面が硬度９３〜９９のポリプロピレン樹
脂、他面が硬度８５〜９２の、熱可塑性エラストマーと
ポリプロピレン樹脂との混合物から構成されていること
を特徴とする回収可能型防滑性ポリプロピレン成形品。(57) [Abstract] [PROBLEMS] The present invention provides a polypropylene molded article having an anti-slip material attached thereto, which is easy to be crushed and remolded even when it is used and is old or damaged. . [Structure] An anti-slip polypropylene molded product obtained by heat-sealing a non-slip material to a polypropylene molded product, wherein the above-mentioned non-slip material has a multi-layer structure, and a surface to be fused to the molded product of the non-slip material. Is a polypropylene resin having a hardness of 93 to 99, and the other surface is made of a mixture of a thermoplastic elastomer and a polypropylene resin having a hardness of 85 to 92.
Description
【０００１】[0001]
【産業上の利用分野】本発明は回収可能型防滑性ポリプ
ロピレン成形品に関する。詳しくは、使用されて古くな
ったり、破損したりしても、粉砕して成形し直すことの
容易な、防滑材が取り付けられたポリプロピレン成形品
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a collectable slip-resistant polypropylene molded article. More specifically, the present invention relates to a polypropylene molded article to which a slip preventive material is attached, which can be easily crushed and remolded even if it is used and becomes old or damaged.
【０００２】[0002]
【従来の技術】防滑性ポリプロピレン成形品として代表
的なものに、ポリプロピレン製のパレットがある。ポリ
プロピレン製のパレットは、その衛生性、耐水性、耐腐
食性等の点が注目され、食品分野、水産分野、薬品分野
等を初めとして種々の分野で多用されるに至っている。
ポリプロピレン製のパレットは上記のような特徴を有す
る反面、腐食しないため経時的に長期間に渡って存在
し、例えば一部破損して使用不能となったりした場合、
その処分に困るという問題がある。2. Description of the Related Art A typical example of a slip-resistant polypropylene molded product is a polypropylene pallet. BACKGROUND ART Polypropylene pallets have been widely used in various fields including the food field, marine product field, and drug field, because of their hygiene, water resistance, and corrosion resistance.
Polypropylene pallets have the characteristics as described above, but since they do not corrode, they exist over a long period of time, for example, if they become partially damaged and unusable,
There is a problem that it is difficult to dispose of it.
【０００３】[0003]
【発明が解決しようとする課題】ポリプロピレンのリサ
イクル法としては、第１に、粉砕して成形し直すことが
考えられるが、ポリプロピレン製パレットの場合は、こ
の方法が簡単には採用し難い問題があった。それは、ポ
リプロピレン製パレットは、その材質上摩擦係数が小さ
く、荷物等を載置して使用する場合に、滑りにより荷く
ずれすることがあるため、ほとんど全てのポリプロピレ
ン製パレットには合成ゴム、架橋したエチレン−プロピ
レンゴム等からなる滑り止め材が設けられているためで
ある。The first method of recycling polypropylene is to crush and remold, but in the case of polypropylene pallets, there is a problem that this method is not easily adopted. there were. Because polypropylene pallets have a small friction coefficient due to their material, and they may slip off when used with a load on them, almost all polypropylene pallets are made of synthetic rubber or crosslinked. This is because a non-slip material such as ethylene-propylene rubber is provided.
【０００４】これらの架橋や加硫した滑り止め材はゴム
状のものであるため、滑り止め材を取り付けたままパレ
ットを粉砕して再度成形しようとしても成形時の加熱に
よっても架橋や加硫した滑り止め材が溶融せず、成形機
中で閉塞の原因となったり、無理に成形しても成形品中
にツブ状で残留し、母材強度を低下させるため強度的に
使用し得なくなるためである。このため、架橋や加硫し
た滑り止め材は、粉砕時に合成樹脂に混入しないよう
に、予め取り除くことが必要となる。滑り止め材は、パ
レットの使用時に荷物との摩擦等により外れてしまって
は困るので、相当強固に溶着等により設けられているの
が通常であるから、この取外しにも手間と工程が掛り、
能率的とは云えない。Since these cross-linked or vulcanized anti-slip materials are rubber-like materials, even if the pallets were crushed and re-molded with the anti-slip material still attached, they were cross-linked or vulcanized by the heating during molding. The non-slip material does not melt and may cause blockage in the molding machine, or even if it is forcibly molded, it remains in the molded product in the shape of a tub, which lowers the strength of the base material and makes it unusable in terms of strength. Is. Therefore, it is necessary to remove the cross-linked or vulcanized anti-slip material in advance so as not to mix with the synthetic resin during pulverization. It is troublesome if the anti-slip material comes off due to friction with luggage during use of the pallet, so it is usually provided by welding, etc., so it is troublesome and time-consuming to remove it.
It cannot be said that it is efficient.
【０００５】[0005]
【課題を解決するための手段】本発明者は、ポリプロピ
レン樹脂を用いたパレットにつき、滑り止め効果が良好
で、滑り止め材を取り除くことなく、粉砕、再度成形が
簡単にできるパレットを提供することを目的に鋭意検討
を重ねた結果、特定の材質及び構造からなる滑り止め材
とポリプロピレン樹脂製パレットとの組合せにより良好
な回収が行なえる回収可能型ポリプロピレン製パレット
（成形品）が得られることを見出し、本発明を完成し
た。DISCLOSURE OF THE INVENTION The inventor of the present invention provides a pallet made of polypropylene resin, which has a good anti-slip effect and can be easily crushed and re-molded without removing the anti-slip material. As a result of repeated studies for the purpose of obtaining a recoverable polypropylene pallet (molded product) that enables good recovery by combining a non-slip material made of a specific material and structure with a polypropylene resin pallet. Heading, completed the present invention.
【０００６】本発明の要旨は、ポリプロピレン成形品に
滑り止め材を熱融着してなる防滑性ポリプロピレン成形
品であって、上記滑り止め材が多層構造とされており、
滑り止め材の成形品に融着される面が硬度９３〜９９の
ポリプロピレン樹脂、他面が硬度８５〜９２の、熱可塑
性エラストマーとポリプロピレン樹脂との混合物から構
成されていることを特徴とする回収可能型防滑性ポリプ
ロピレン成形品に存する。The gist of the present invention is a slip-resistant polypropylene molded article obtained by heat-sealing a non-slip material to a polypropylene molded article, wherein the above-mentioned non-slip material has a multilayer structure,
A recovery, characterized in that the surface of the non-slip material fused to the molded product is made of polypropylene resin having a hardness of 93 to 99 and the other surface is made of a mixture of a thermoplastic elastomer and a polypropylene resin having a hardness of 85 to 92. It exists in possible slip-resistant polypropylene molded products.
【０００７】使用済みのポリプロピレン成形品（パレッ
ト）を粉砕して再度成形してパレットや他の成形品に成
形する場合、劣化した部分や、ゴミ等が混入するため衝
撃強度や曲げ強度等の諸物性が低下するのが普通であ
る。このため元のままの強度の成形品とするのは難かし
い。しかし、ポリプロピレン樹脂に少量の発泡剤を添加
して射出成形した場合、樹脂自体の衝撃強度は低下する
が、成形品の肉厚を厚くすることができ、このため設計
的にパレット等の成形品の強度を向上させることができ
る。When a used polypropylene molded product (pallet) is crushed and remolded to be molded into a pallet or another molded product, a deteriorated portion, dust, and the like are mixed, so that various impact strength, bending strength, and the like are required. The physical properties are usually reduced. Therefore, it is difficult to obtain a molded product having the original strength. However, when a small amount of a foaming agent is added to polypropylene resin and injection molding is performed, the impact strength of the resin itself decreases, but the wall thickness of the molded product can be increased. The strength of can be improved.
【０００８】この低発泡成形技術を応用すれば母材自体
の衝撃強度が低下してしまった再生樹脂であっても、元
の製品と同等の強度のパレットや他の成形品に再生する
ことが可能となる。従って、本発明の成形品（パレッ
ト）本体は、原料樹脂に発泡剤を少量添加して１．０５
〜１．５倍程度に発泡させて射出成形した低発泡射出成
形品からなることが好ましい。成形品を構成するポリプ
ロピレン樹脂としては密度が０．８９８〜０．９０１ｇ
／ｃｍ3、メルトインデックスが１〜７ｇ／１０分（Ｊ
ＩＳＫ−６７５８ ２３０℃）程度のものが好適に用い
られる。[0008] By applying this low foaming molding technique, even a recycled resin whose impact strength of the base material itself has decreased can be recycled into a pallet or another molded product having the same strength as the original product. It will be possible. Therefore, the molded product (pallet) body of the present invention is 1.05 by adding a small amount of the foaming agent to the raw material resin.
It is preferably made of a low-foaming injection-molded product which is foamed by about 1.5 times and injection-molded. Density is 0.898 to 0.901 g for polypropylene resin that constitutes molded products.
/ Cm 3 , melt index 1 to 7 g / 10 minutes (J
Those having a temperature of about ISK-6758 230 ° C.) are preferably used.
【０００９】成形品には滑り止め材が熱融着により設け
られる。設けられる滑り止め材としては多層構造のテー
プ状滑り止め材が好適に用いられる。テープ状滑り止め
材は幅１０ｍｍ〜４０ｍｍ、厚さ１ｍｍ〜３ｍｍ程度の
もので、長さは設ける成形品の大きさや設ける位置に応
じて適宜の長さとされたものである。滑り止め材は、多
層構造とされており、成形品に融着される側は硬度９３
〜９９のポリプロピレンから構成され、他の面、すなわ
ち、滑り止めとして働く面の側は、硬度８５〜９２の、
熱可塑性エラストマーとポリプロピレン樹脂との混合物
から構成されている。このような滑り止め材を用いるこ
とにより滑り止め材が融着（溶着）されたままの合成樹
脂製成形品を粉砕し、滑り止めの粉砕物が混入した状態
で再度成形に供しても、滑り止めの粉砕物は加熱により
良好に溶融分散することとなり、得られる成形品中にツ
ブ状で残るようなことがない。An anti-slip material is provided on the molded product by heat fusion. As the anti-slip material provided, a tape-shaped anti-slip material having a multilayer structure is preferably used. The tape-shaped non-slip material has a width of about 10 mm to 40 mm and a thickness of about 1 mm to 3 mm, and the length is an appropriate length depending on the size of the molded product to be provided and the position to be provided. The non-slip material has a multi-layer structure, and the side to be fused to the molded product has a hardness of 93
The other surface, that is, the surface that acts as a non-slip surface, has a hardness of 85 to 92,
It is composed of a mixture of a thermoplastic elastomer and a polypropylene resin. By using such an anti-slip material, a synthetic resin molded product with the anti-slip material fused (welded) is crushed, and even if it is subjected to molding again with the crushed anti-slip material mixed, The crushed product is melted and dispersed satisfactorily by heating, and it does not remain in the resulting molded product in the form of tubs.
【００１０】成形は前述もしたように、強度上から低発
泡射出成形を用いることが望ましい。熱可塑性エラスト
マーとしては、オレフィン系重合体とゴム成分（通常５
０〜９５重量％程度）との混合物が挙げられる。熱可塑
性エラストマー中のオレフィン系重合体としては、例え
ば、エチレン、プロピレン、ブテン−１、３−メチル−
ブテン−１、４−メチルペンテン−１等のα−オレフィ
ンの単独重合体、又は共重合体が挙げられる。As described above, it is desirable to use low-foam injection molding in terms of strength for molding. As the thermoplastic elastomer, an olefin polymer and a rubber component (usually 5
0 to 95% by weight). Examples of the olefin polymer in the thermoplastic elastomer include ethylene, propylene, butene-1,3-methyl-
Examples thereof include homopolymers or copolymers of α-olefins such as butene-1 and 4-methylpentene-1.
【００１１】熱可塑性エラストマー中のゴム成分として
は、例えば、エチレン、プロピレン、ブテン−１、ペン
テン−１等のα−オレフィンの共重合体、またはこれら
とジエンとの共重合体のようなオレフィン系ゴム、ポリ
ブタジエン、天然ゴム等のポリジエン化合物、アクリロ
ニトリルとジエン共重合体等が挙げられる。ゴム成分で
あるオレフィン系ゴムとしては初期弾性率が４００ｋｇ
／ｃｍ2 以下、好ましくは２００ｋｇ／ｃｍ2 以下の無
定形または低結晶性であることが好ましい。具体的には
エチレン−プロピレン共重合ゴム、エチレン−プロピレ
ン−ジエン共重合ゴム及びそれらの混合物が好適に用い
られる。The rubber component in the thermoplastic elastomer is, for example, an olefin-based copolymer such as a copolymer of α-olefin such as ethylene, propylene, butene-1, pentene-1, or a copolymer of these with a diene. Examples thereof include polydiene compounds such as rubber, polybutadiene and natural rubber, and acrylonitrile / diene copolymers. The initial elastic modulus of the olefin rubber, which is a rubber component, is 400 kg.
/ Cm 2 or less, preferably 200 kg / cm 2 or less, preferably amorphous or low crystalline. Specifically, ethylene-propylene copolymer rubber, ethylene-propylene-diene copolymer rubber and mixtures thereof are preferably used.
【００１２】ゴム成分の他の一例であるポリブタジエン
ゴムとしては、ポリブタジエン、ポリイソプレン、ＮＢ
Ｒ、ＮＲ等のゴムあるいはこれらの混合物が挙げられ
る。さらにこれらとオレフィン系ゴムとの混合物も用い
られる。熱可塑性エラストマーの具体例としてはポリプ
ロピレン（ＰＰ）とエチレン−プロピレン共重合体（Ｅ
ＰＭ）との５〜７０：９５〜３０（ＰＰ：ＥＰＭ）
（％）の混合物、ポリプロピレン（ＰＰ）とエチレン−
プロピレン−ジエン三元共重合体（ＥＰＤＭ）との５〜
７０：９５〜３０（ＰＰ：ＥＰＤＭ）（％）の混合物、
ＰＰとＥＰＲとＥＰＤＭとの５〜７０：０〜３０：１〜
９５（ＰＰ：ＥＰＭ：ＥＰＤＭ）（％）の混合物等が挙
げられる。Polybutadiene rubber, which is another example of the rubber component, includes polybutadiene, polyisoprene, and NB.
Examples include rubbers such as R and NR, and mixtures thereof. Further, a mixture of these and an olefin rubber is also used. Specific examples of the thermoplastic elastomer include polypropylene (PP) and ethylene-propylene copolymer (E
5 to 70:95 to 30 with PM) (PP: EPM)
(%) Mixture, polypropylene (PP) and ethylene-
5 with propylene-diene terpolymer (EPDM)
70: 95-30 (PP: EPDM) (%) mixture,
5 to 70: 0 to 30: 1 from PP to EPR to EPDM
A mixture of 95 (PP: EPM: EPDM) (%) and the like can be mentioned.
【００１３】熱可塑性エラストマーの他の例としては、
スチレン（Ｓ）とブタジエン（Ｂ）との１５〜４５：８
５〜５５（Ｓ：Ｂ）（％）との共重合物があげられ、ジ
ブロックタイプ、トリブロックタイプのいずれでも良
い。また、これらの水素化物（ＳＥＢＳ）、スチレン
（Ｓ）−イソプレン（Ｉ）−スチレンの１５〜２０
（Ｓ）：８５〜８０（Ｉ）（Ｓ：Ｉ）（％）の共重合物
及びこれの水素化物等が挙げられる。Other examples of thermoplastic elastomers include:
15-45: 8 of styrene (S) and butadiene (B)
A copolymer with 5-55 (S: B) (%) may be mentioned, and either diblock type or triblock type may be used. In addition, these hydrides (SEBS), styrene (S) -isoprene (I) -styrene 15 to 20
(S): 85-80 (I) (S: I) (%) copolymers and hydrides thereof.
【００１４】熱可塑性エラストマーと混合するポリプロ
ピレン樹脂としては密度が０．８９８〜０．９０１ｇ／
ｃｍ3、メルトインデックスが０．５〜３．０ｇ／１０
分（ＪＩＳＫ−６７５８ ２３０℃）程度のものが熱可
塑性エラストマーとの相溶性、積層するポリプロピレン
樹脂層との接着性等から好ましい。これらの熱可塑性エ
ラストマーとポリプロピレン樹脂との混合物しては、耐
摩擦性（対鉄）がドライ状態で０．８以上、ウエット状
態で０．１６以上のものが好ましい。（ＡＳＴＭＤ−３
２０８Ｄ−１８９４）耐摩耗性がピコ摩耗指数にして１
６０以上（ＡＳＴＭＤ−２２２８）、硬度がＪＩＳ Ａ
７５±５°（ＪＩＳＫ−６３０１）、ひっかき性（引裂
強度）７０ｋｇ／ｃｍ以上（ＪＩＳＫ−６３０１Ｂ）、
圧縮永久歪（７０℃×２２Ｈｒ）２２％以上（ＪＩＳＫ
−６３０１）程であることが望ましい。The polypropylene resin mixed with the thermoplastic elastomer has a density of 0.898 to 0.901 g /
cm 3 , melt index 0.5-3.0 g / 10
It is preferably about minutes (JISK-6758 230 ° C) from the viewpoint of compatibility with the thermoplastic elastomer and adhesiveness with the polypropylene resin layer to be laminated. The mixture of these thermoplastic elastomers and polypropylene resin preferably has a friction resistance (against iron) of 0.8 or more in the dry state and 0.16 or more in the wet state. (ASTMD-3
208D-1894) wear resistance is 1 in pico wear index
60 or more (ASTM D-2228), hardness JIS A
75 ± 5 ° (JISK-6301), scratchability (tear strength) 70 kg / cm or more (JISK-6301B),
Compression set (70 ℃ × 22Hr) 22% or more (JISK
-6301) is preferable.
【００１５】熱可塑性エラストマーとポリプロピレン樹
脂との混合物からなる層と積層されるポリプロピレン樹
脂層としては、硬度が９３〜９９のポリプロピレン樹脂
が用いられる。このような硬度とすることにより、上層
は滑り止め効果、下層は荷物の荷重に対する変形防止効
果、成形品との融着性向上効果等がある。硬度が９３〜
９９のポリプロピレン樹脂層の厚さは０．１〜１ｍｍμ
程度とされるのが良い。滑り止め材には、通常、適宜の
添加剤、充填剤、着色剤等が添加され、積層押し出し成
形等によりテープ状に成形される。この形状は、パレッ
ト等の成形品の表面に熱融着し易い形状であり、熱融着
に際してはパレット等の成形品の表面に滑り止め材の厚
さの１／４〜１／２程度の深さの溝を設け、この溝の中
に滑り止め材を熱融着するのが滑り止め材の耐久性の上
から好ましい。滑り止め材の設けられる位置は、荷物と
の接触部であるが、滑り止め材の全量が、パレットの重
量の０．１〜５重量％程度であることが回収時の分散性
の上から好ましい。A polypropylene resin having a hardness of 93 to 99 is used as a polypropylene resin layer laminated with a layer made of a mixture of a thermoplastic elastomer and a polypropylene resin. With such hardness, the upper layer has an anti-slip effect, the lower layer has an effect of preventing deformation against the load of the load, and an effect of improving the fusion property with the molded product. Hardness is 93 ~
The thickness of the polypropylene resin layer of 99 is 0.1 to 1 mmμ
It is good to be about. Generally, appropriate additives, fillers, colorants and the like are added to the anti-slip material, and the anti-slip material is formed into a tape shape by laminated extrusion molding or the like. This shape is a shape that is easily heat-sealed to the surface of a molded product such as a pallet. At the time of heat-sealing, the surface of the molded product such as a pallet is about 1/4 to 1/2 the thickness of the non-slip material. It is preferable from the standpoint of durability of the anti-slip material to provide a groove having a depth and heat-bond the anti-slip material to the groove. The position where the non-slip material is provided is the contact portion with the baggage, but it is preferable that the total amount of the non-slip material is about 0.1 to 5% by weight of the weight of the pallet from the viewpoint of dispersibility at the time of collection. .
【００１６】[0016]
実施例１ ポリプロピレンとＥＰＤＭとの４０：６０の混合物から
なる熱可塑性エラストマー７０重量部と密度０．９０の
ポリプロピレン樹脂３０重量部との混合物（硬度９０）
を一方の面とし、密度０．９０のポリプロピレン樹脂
（硬度９８）をもう一方の面として２層構造の滑り止め
材を押し出し成形した。滑り止め材の厚さは２ｍｍ、幅
は２０ｍｍ、ポリプロピレン樹脂層の厚さは０．３ｍｍ
とした。得られた滑り止め材を、低発泡射出成形して成
形したポリプロピレン製パレット（発泡倍率１．２倍、
重量２０ｋｇ）の表面に熱融着した。滑り止め材はの重
量はパレット本体（２０ｋｇ）に対し２．５％（５００
ｇ）であった。このパレットは滑り止め効果も良好でパ
レットとして好ましいものであった。このパレットを滑
り止め材を取り外さず、粉砕し、再度低発泡射出成形し
てパレットを成形した（発泡倍率（１．２）倍）。得ら
れたパレットにつき曲げ強度、衝撃強度を測定したが、
再生前のパレットとほぼ同等の強度を示した。Example 1 A mixture of 70 parts by weight of a thermoplastic elastomer consisting of a 40:60 mixture of polypropylene and EPDM and 30 parts by weight of a polypropylene resin having a density of 0.90 (hardness 90).
Was used as one surface, and a polypropylene resin having a density of 0.90 (hardness 98) was used as the other surface to extrude and mold a two-layer structure anti-slip material. The anti-slip material has a thickness of 2 mm, a width of 20 mm, and a polypropylene resin layer has a thickness of 0.3 mm.
And A polypropylene foam pallet (foaming ratio 1.2 times,
It was heat fused to the surface of 20 kg in weight. The weight of the non-slip material is 2.5% (500 kg) with respect to the pallet body (20 kg).
g). This pallet had a good anti-slip effect and was preferable as a pallet. The pallet was crushed without removing the anti-slip material, and low-foam injection molding was performed again to mold the pallet (foaming ratio (1.2) times). The bending strength and impact strength of the obtained pallet were measured,
It showed almost the same strength as the pallet before recycling.
【００１７】[0017]
【発明の効果】本発明の成形品は、滑り止め材を取り除
くことなく、粉砕して再度成形してパレット等の成形品
に成形しても、成形不良や強度の大幅な低下を起すこと
がない成形品であり、再生が容易で実用上大変効果的で
ある。EFFECTS OF THE INVENTION The molded product of the present invention, even if it is crushed and re-molded without removing the anti-slip material to be molded into a molded product such as a pallet, causes defective molding and a significant decrease in strength. It is a non-molded product, is easy to recycle and is very effective in practice.
Claims (3)
融着してなる防滑性ポリプロピレン成形品であって、上
記滑り止め材が多層構造とされており、滑り止め材の成
形品に融着される面が硬度９３〜９９のポリプロピレン
樹脂、他面が硬度８５〜９２の、熱可塑性エラストマー
とポリプロピレン樹脂との混合物から構成されているこ
とを特徴とする回収可能型防滑性ポリプロピレン成形
品。1. A non-slip polypropylene molded product obtained by heat-sealing a non-slip material to a polypropylene molded product, wherein the non-slip material has a multi-layer structure, and is fused to the non-slip molded product. A recoverable slip-resistant polypropylene molded article, characterized in that one side is made of a polypropylene resin having a hardness of 93 to 99 and the other side is made of a mixture of a thermoplastic elastomer and a polypropylene resin having a hardness of 85 to 92.
樹脂を１．０５〜１．５倍に低発泡射出成形してなるも
のであることを特徴とする請求項１に記載の回収可能型
防滑性ポリプロピレン成形品。2. The collectable slip-resistant polypropylene molded product according to claim 1, wherein the polypropylene molded product is a product obtained by low-foaming injection molding polypropylene resin 1.05 to 1.5 times. .
の０．１〜５％を占めることを特徴とする請求項１又は
２に記載の回収可能型防滑性ポリプロピレン成形品。3. The recoverable slip-resistant polypropylene molded article according to claim 1, wherein the non-slip occupies 0.1 to 5% of the weight of the polypropylene molded article.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6035692A JPH07242236A (en) | 1994-03-07 | 1994-03-07 | Recoverable anti-slip polypropylene molded product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6035692A JPH07242236A (en) | 1994-03-07 | 1994-03-07 | Recoverable anti-slip polypropylene molded product |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07242236A true JPH07242236A (en) | 1995-09-19 |
Family
ID=12448958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6035692A Pending JPH07242236A (en) | 1994-03-07 | 1994-03-07 | Recoverable anti-slip polypropylene molded product |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07242236A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000007814A1 (en) * | 1998-08-06 | 2000-02-17 | Wella Aktiengesellschaft | Foil with an antiskid surface |
| WO2000040884A1 (en) * | 1998-12-28 | 2000-07-13 | Mitsubishi Jidosha Kogyo Kabushiki Kaisha | Hose |
| JP2006298404A (en) * | 2005-04-18 | 2006-11-02 | Gifu Plast Ind Co Ltd | Pallet |
| US20220363426A1 (en) * | 2018-06-29 | 2022-11-17 | Midland Compounding & Consulting, Inc. | Recyclable abrasion resistant dunnage tray |
-
1994
- 1994-03-07 JP JP6035692A patent/JPH07242236A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000007814A1 (en) * | 1998-08-06 | 2000-02-17 | Wella Aktiengesellschaft | Foil with an antiskid surface |
| US6605342B1 (en) | 1998-08-06 | 2003-08-12 | Wella Ag | Dimensionally stable label for a bottle providing a nonslip gripping surface |
| WO2000040884A1 (en) * | 1998-12-28 | 2000-07-13 | Mitsubishi Jidosha Kogyo Kabushiki Kaisha | Hose |
| AU747575B2 (en) * | 1998-12-28 | 2002-05-16 | Kabushiki Kaisha Meiji Gomu Kasei | Car hose |
| JP2006298404A (en) * | 2005-04-18 | 2006-11-02 | Gifu Plast Ind Co Ltd | Pallet |
| US20220363426A1 (en) * | 2018-06-29 | 2022-11-17 | Midland Compounding & Consulting, Inc. | Recyclable abrasion resistant dunnage tray |
| US12103730B2 (en) * | 2018-06-29 | 2024-10-01 | Midland Compounding & Consulting, Inc. | Recyclable abrasion resistant dunnage tray |
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