JP2001310326A - Plastic film-laminated paper shreds, method for producing the same, and synthetic resin composition containing the shreds - Google Patents

Abstract

(57) [Problem] A thin plastic film laminated paper that can be easily kneaded and molded with a synthetic resin, has strength even when the blending ratio of paper is increased, and enables uniform blending of the paper and the synthetic resin. A shred, a method for producing the shred, and a synthetic resin composition containing the shred are obtained. SOLUTION: The plastic film laminated paper has a cross section cut by a cutter having a fixed blade and a rotary blade so that the paper fibers do not stand up, and the particle size of the cut material is from 0.05 mm. It is a shredded plastic film laminated paper characterized by having a center value in the range of 0.3 mm, is not defibrated at the time of shredding, and its whiskers are entangled to suppress the occurrence of lumps. Therefore, a transparent film or a translucent film can be obtained without foaming during kneading and molding with a synthetic resin.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shredded plastic film-laminated paper, a method of manufacturing a shredded plastic film-laminated paper, and a shredded plastic film-laminated paper capable of providing a composite material of paper and plastic and a product thereof. And a synthetic resin composition containing the same. Specifically, when shredding plastic film laminated paper, which has been difficult to recycle, it is easy to knead and granulate with resin, easily formed into a composite material, has high processability, and is easily cut into plastic film laminated paper. The present invention relates to a synthetic resin composition containing shreds and a method for producing the same.

[0002]

2. Description of the Related Art Conventionally, paper has been a material for forming a gel, which dislikes the contamination in plastic processing. On the other hand, regarding paper recycling, how to separate plastic was an issue to be studied. Therefore, plastic laminated paper is difficult to reuse and is usually incinerated.

[0003] The development of a composite material of paper and plastic requires a fine grinding step. Japanese Patent Application Laid-Open No. 4-45879 discloses that a liquid beverage storage paper pack having an inner surface coated with a polyethylene film is pulverized into a flocculent shape, heated at a temperature equal to or higher than the melting point of polyethylene, and pressed into a solid state. A method of recycling a paper pack to be formed is disclosed. JP-A-5-269736 discloses a method containing (A) 100 parts by weight of defibrated cellulose fibers and (B) 0.3 to 100 parts by weight of a liquid dispersibility improver having a specified melting point and viscosity. A fibrous material for resin blending granulated to a bulk density of 0.09 or more is disclosed. Patent 2907740
Japanese Patent Application Publication No. JP-A-2003-115139 discloses a method and an apparatus for producing a wastepaper-containing resin composition in which wastepaper fine powder excluding long fibers and resin powder are mixed, kneaded, and granulated. In each of the techniques disclosed in these publications, paper fibers are finely pulverized into a flocculent shape, and those obtained by disintegrating paper fibers into pieces are used.

Conventional pulverizers (for example, Victor Mill manufactured by Hosokawa Micron Co., Ltd., dry pulverizer manufactured by Horai Kogyo Co., Ltd., and dry paper splitting machine manufactured by Sumikura Kogyo Co., Ltd.) disintegrate paper fibers and have a large number of 'whiskers'. It is easy to form a 'dama' that the pulverized substances cling to each other and solidify in a cotton-like manner, and when blended with synthetic resin etc. in the subsequent process, there are defects such as fluffy fluttering, difficulty in mixing without waist, In addition, it is difficult to remove air present in the gaps between the pulverized materials, and there is a disadvantage that air remains in the compound with the resin and the compound foams.

Japanese Unexamined Patent Application Publication No. 10-29222 discloses an injection-molded article obtained by mixing a recycled shredded plastic film laminated paper and a pellet resin into small pieces and injection molding the mixture. it is disclosed area of shredding recycled materials is 1.0 mm ² to 20 mm ^2, is hitting the shredding merely only describes the use shredder, the Mirusa like.

JP-A-10-138241 discloses paper-containing resin pellets obtained by mixing a shredded paper component obtained by shredding a composite paper having a polyethylene resin layer with a polyethylene resin, It is described that the area of a preferable shredded material is 4 mm square or less, and the shredding merely describes using a shredder or a crusher.

[0007] Even in the cut laminated paper pieces in these publications, some of the fibers of the paper jump out from the cross section of the piece in a whisker-like manner, and the fibers may not be cut cleanly in the cross section. There is a problem that entanglement and dispersion of small pieces of laminated paper are reduced. Although the shredding device is described as using a shredder, it is cut at a low speed in a state where a shear is applied, so that many whiskers are generated.

Further, Japanese Patent Application Laid-Open Nos. Hei 10-29222 and Hei 10-138241 disclose 1.0 mm ^{2 to} 20 mm ² , and 1 to 5 mm square strips as preferred laminated paper pieces. However, when kneading the resin,
There is a tendency that it is too large to obtain a uniformly mixed and smooth resin composition.

Although fine grinding can be performed by wet pulverization, drying is indispensable as a post-process in which 'dama' and 'whiskers' are considerably reduced, and drying itself is often not completed completely, leaving moisture, There were drawbacks such as the cost was not met.

[0010] As described above, conventional pulverized plastic film laminated paper has many 'whiskers', and the beards are stuck to each other. The composite material of paper and plastic made from the pulverized material had a large amount of paper components in the 'dama' part and was weak in strength. In addition, there are drawbacks such as difficulty in removing the air in the depressed portion and foaming of the molding material. In order to solve these drawbacks, it is necessary to grind with a large particle size. If the grind is increased, the molded product has poor dispersibility, coarse texture, and paper components are unevenly distributed. was there.

[0011] In the case of wet pulverization, the drying step for removing the water is complicated, and when the water is not completely removed, there remains a problem such as foaming of a molded product. In addition, due to the drying step, practical use has been difficult in terms of cost. Therefore, in the case of a composite material of paper and plastic, which has a high content ratio of paper of 2 to 50%, compression molding and large-sized extrusion molding, which do not require relatively high strength, are mainly used. If the content is not more than 1%, it is difficult to obtain a composite material, and the resulting sheets and films are poor in uniformity.

[0012]

SUMMARY OF THE INVENTION The present invention relates to a shredded plastic film laminated paper for shredding a plastic film laminated paper, kneading it with a resin, and processing it into a composite material of paper and plastic, and a method for producing the same. The present invention also provides a shredded plastic film-laminated paper in which the fibers of the shredded material are defibrated at the time of shredding to generate whiskers, and the whiskers are prevented from entanglement, and a method for producing the same. In particular, there is no foaming during kneading, uniform mixing of paper and synthetic resin is possible, kneading and molding with synthetic resin are easy, and even if the compounding ratio of paper is increased, there is strength, and sheet and film The present invention is also directed to a shredded plastic film laminated paper which can also be applied, a method for producing the same, and a synthetic resin composition containing the shred.

[0013]

Means for Solving the Problems The present inventors have made intensive studies on solving the above problems and as a result have reached the present invention.

(1) A shredded product of a plastic film laminated paper, which has a thin cross section in which paper fibers are not generated in a whisker shape, and has a particle size of 0.05 mm to 0 mm. A plastic film-laminated paper shredded article having a center value in a range of 0.3 mm.

(2) The shredded plastic film-laminated paper according to the above (1), wherein the paper is a plastic film-laminated paper coated on one or both sides with a polyolefin resin.

(3) The shredded plastic film-laminated paper according to the above (1) or (2), wherein the shredded plastic film-laminated paper and the shredded plastic film are uniformly mixed.

(4) The thickness of the laminated layer of the plastic film laminated paper is 3 μm to 500 μm, and the thickness of the paper is 4 μm.
(1) characterized in that it is 0 μm to 1000 μm,
The shredded plastic film-laminated paper according to (2) or (3).

(5) Production of shredded plastic film-laminated paper, characterized in that the plastic film-laminated paper is cut using a cutter having a fixed blade and a rotary blade so that the fiber of the paper is not broken at the cut surface. Is the way.

(6) The plastic film-laminated paper is cut using a cutter having a fixed blade and a rotary blade installed in the chamber so that the paper fibers are not defibrated at the cut surface, and the shredded material is cut to a predetermined size. A plastic film laminated paper characterized in that when cut to a particle size, it passes through a mesh attached to the bottom of the chamber and is discharged to the outside of the chamber, so as to be shredded into shreds not having a predetermined particle size or more. This is a method for producing shreds.

(7) Using a cutter having a fixed blade and a rotary blade, a plastic film laminated paper and a plastic film are not defibrated with paper fibers, and
This is a method for producing a plastic film-laminated paper, which is characterized in that, while co-cutting, uniform mixing is performed at an arbitrary composition ratio, and at the same time, shreds are produced so as not to generate whiskers in the film.

(8) The method according to the above (5), (6) or (7), wherein the particle size of the shredded plastic film laminated paper has a central value in the range of 0.05 mm to 0.3 mm. This is a method for producing chopped plastic film laminated paper.

(9) The production of the shredded plastic film-laminated paper according to the above (5), (6) or (7), wherein the cutter has a plurality of fixed blades and a plurality of rotary blades. Is the way.

(10) The above (5), (6), (7) or (5), wherein the paper is a plastic film laminated paper in which one or both sides of the paper are coated with a polyolefin resin.
(8) A method for producing a shredded plastic film-laminated paper according to (8).

(11) The thickness of the laminated layer of the plastic film laminated paper is 3 μm to 500 μm, and the thickness of the paper is 4 μm.
The above (5), which is 0 μm to 1000 μm,
(6) The method for producing a shredded plastic film laminated paper according to (7), (8) or (10).

(12) A synthetic resin composition obtained by granulating the shredded plastic film laminated paper described in (1), (2) or (4) together with a synthetic resin.

(13) A synthetic resin compounded composition obtained by granulating the shredded plastic film-laminated paper of (3) without newly adding a synthetic resin. (14) The mixing ratio of paper component / synthetic resin is 0.05 / 99.95.
The synthetic resin composition according to the above (12) or (13) for forming a transparent film or a translucent film having a thickness of 2/98. (15) The mixing ratio of paper component / synthetic resin is from 2/98 to 60/40.
The synthetic resin composition according to the above (12) or (13), for forming a translucent or opaque film having a paper-like or paper texture. (16) The mixing ratio of paper component / synthetic resin is from 1/99 to 90/10
The synthetic resin composition according to the above (12) or (13) for extrusion molding. (17) A transparent or translucent film formed using the synthetic resin composition of (14). (18) A translucent or opaque film having a paper texture formed using the synthetic resin composition of (15).

[0027]

BEST MODE FOR CARRYING OUT THE INVENTION The shredded plastic film-laminated paper of the present invention is obtained by cutting the cut surface in a state where the paper fibers are not defibrated. FIG. 1 shows the shredded plastic film-laminated paper of the present invention obtained according to Example 1 specifically. Since there are few whisker-like projections of the paper fibers from the cut surface, the shredded material takes the form of an individual one by one. FIG. 2 is an enlarged view of a cut surface. The generation of whiskers of paper fibers is suppressed, and the fibers are cut in a thin section. As a result, the shreds of the plastic film-laminated paper do not become entangled with each other by whiskers, resulting in a form in which lumps are hardly generated.

On the other hand, FIG. 3 shows a crushed product of a crushed plastic film-laminated paper outside the present invention. FIG. 4 is an enlarged view thereof. The pulverized material shows a state in which fibers are defibrated and many whiskers are generated. The beards are intertwined, creating a deception,
It is flocculent as a whole. When this pulverized material is kneaded into a resin, the pulverized material does not wet with the resin due to lack of affinity with the resin, and becomes a non-uniform mixture, and air existing in the pulverized material foams. Also, there is no strength.

The cutter having a fixed blade and a rotary blade used for obtaining the shredded material of the present invention is composed of two to five fixed blades and three to ten single-blade rotary blades as shown in FIG. A plastic film shredder (for example, RC series used for pet film manufactured by Kiko Co., Ltd.) is used, and air is applied so that plastic film laminated paper can be shredded without being sheared or twisted. By shredding while feeding, it is possible to make fine cuts with less beard, and it is also possible to prevent 'dama', that is, beards from sticking together and forming a clump, and the particle size in the range of 0.05 mm to 0.3 mm It is possible to reduce the grain size to a point having a central value. As a result, there is no sticking between the particles, and the particles exhibit a free-flowing granularity as a whole.

In this shredder, a rotary blade is mounted in the chamber, a mesh is mounted on the bottom of the chamber, and the shredded material having a center value in the range of 0.05 mm to 0.3 mm is sieved off, and the size is reduced. Cutting continues only for the particle size.
In a preferred embodiment, the plastic film laminated paper is cut into pieces having a width of about 10 to 60 mm and a length of about 20 to 100 mm, placed in a chamber, and shredded for a predetermined time, for example, about 2 to 30 minutes. Shreds smaller than the predetermined size pass through a mesh attached to the bottom of the chamber and are collected outside the system, and those that do not pass through the mesh are further shredded. 0.05 mm to 0.3 mm in the present invention
The shredded material having a median value in the range is preferably one having passed through a sieve, and having a maximum particle size of 1 by passing through a sieve.
The shredded material having a size of not less than 1 mm is less than 1%, and a homogeneous resin composition can be obtained when kneaded with the resin.

According to the shredding method of the present invention, a plastic film fragment, for example, a plastic film cut into a length of 30 to 200 mm by slitting to a width of 10 to 60 mm, and a fragment of a plastic film laminated paper, For example, slit to 10mm ~ 60mm, 50 ~ 20mm
When a plastic film laminated paper cut to a length of 0 mm is cut into pieces at the same time, the plastic film and the plastic laminated film are cut into the same particle size, and are mixed uniformly. Can be.

The shredded plastic film-laminated paper of the present invention can be appropriately adjusted to an arbitrary mixing ratio, which has not been possible with conventional pulverized materials, depending on the application. Specifically, the ratio of the paper component to the resin component is 0.05
When a synthetic resin composition blended in the range of /99.95 to 2/98 is prepared and formed into a film, it is transparent or translucent as well as a normal synthetic resin film, and has sealing properties and strength. It has the function of a natural film. In addition, the film has an appearance suitable for a recycled film because it can be visually recognized that the shredded plastic film laminated paper is mixed. Furthermore,
When a synthetic resin composition in which the ratio of the paper component to the resin component is blended in the range of 2/98 to 60/40 is formed and formed into a film, the synthetic resin film becomes translucent or opaque depending on the paper component, and the strength is reduced. A film having a certain paper-like or paper texture (paper-like) can be realized. Even if the mixing ratio of the paper components is increased, it can be uniformly mixed with a small amount of resin. Therefore, as a synthetic resin composition for extrusion molding, the mixing ratio of paper component / synthetic resin can be 1/99 to 90/10. Of course,
Although it is possible even if it is less than 1/99, it becomes a composite material having a high resin component, and the significance of using the shredded material of the present invention does not come out much. If the ratio of paper / resin exceeds 90/10, kneading of the synthetic resin composition becomes difficult. In addition, the required strength when formed into a composite material tends to be difficult to obtain.

The particle size of the shredded plastic film laminated paper of the present invention preferably has a central value in the range of 0.05 mm to 0.3 mm. If it is less than 0.05 mm, it becomes powdery, the shreds tend to be loosened, the specific surface area becomes large, and it becomes difficult to knead the resin. If it is larger than 0.3 mm, it will be kneaded with the resin, but since the size of the paper is large, the surface of the resin composition will not be smooth and the uniformity tends to be reduced. Further, the strength of the synthetic resin composite material is reduced in the paper layer portion, and in order to maintain the strength, the mixing ratio of the paper component tends to decrease. In particular, extrusion of a sheet-like material such as a film is not preferable because the sheet is cut at the paper component. In the present invention, the particle size of the shreds is set to 0.
In order to have a center value in the range of 05 mm to 0.3 mm, the shredded material having a large particle size can be put in the range by sieving with a mesh and performing cutting again. Usually, the range of the present invention can be obtained by the operation of cutting time and sieving.

The thickness of the plastic film laminated paper in the present invention is not particularly limited as long as it can be cut into the above-mentioned particle size. The thickness of the paper is in the range of 40 μm to 1000 μm. If both the laminate layer and the paper are thicker, the cut ends tend to have more whiskers. On the other hand, if it is too thin, it will fly in the chamber due to the wind of rotation, which is not efficient.

In the present invention, in order to obtain a resin composition kneaded with the shredded material, an auxiliary is used as necessary. Auxiliaries include polyhydric alcohols, fatty acid metal soaps such as zinc stearate, magnesium stearate, calcium stearate, zinc palmitate, zinc myristate, fatty acid amides such as stearic acid amide, silane coupling agents, organic titanates Coupling agents such as coupling agents, waxes such as polyethylene wax and carnauba wax, low molecular weight polyolefins and the like can be selected and used in accordance with the intended use. If necessary, a white pigment such as titanium dioxide, calcium carbonate and kaolin, and a coloring pigment composed of an inorganic or organic pigment can also be added.

The method for producing the resin composition according to the present invention comprises:
The shredded material and the resin can be kneaded and pelletized using a Banbury or a melt extruder. The type of resin to be mixed is preferably the same type of resin component as the resin component of the plastic film-laminated paper, but if sufficient kneading is possible, a similar resin, for example, kneading with a plurality of resin blends within the range of polyolefin resins, resin A composition can be made. The melt extrusion temperature is preferably a temperature at which the paper components do not deteriorate, and is preferably stopped at a maximum of 280 ° C. At higher temperatures, the paper components are undesirably colored by heat.
More preferably, it is 250 ° C. or lower, and further preferably, 22 ° C.
It is preferable to carry out at a temperature of 0 ° C. or lower, most preferably 180 ° C. or lower, and at a temperature higher than the melting point of the resin component.

The resin to be kneaded is not particularly limited as long as it is a thermoplastic resin, but it is a resin having a melting point at a relatively low temperature in order to suppress thermal deterioration of paper components, and is laminated on shredded material. A similar resin having an affinity for the applied resin is preferable. Therefore, low-density polyethylene (LDPE), polypropylene (PP), linear low-density polyethylene (L-LDPE), high-density polyethylene (HDPE), low-melting-point resin Polyester and the like are preferred. Hereinafter, embodiments of the present invention will be described, but the present invention is not limited to the embodiments as long as the technical idea of the present invention is satisfied. Parts and% represent mass unless otherwise noted.

[0038]

EXAMPLES Example 1 Low-density polyethylene (LDPE) containing 5 g / m ^{2 of} titanium oxide was laminated on the surface of paper made of hardwood kraft pulp having a basis weight of 170 g / m ² at 32 g / m ² , Is high density polyethylene (HDPE) and low density polyethylene (LDPE)
27g / polyethylene mixed with 70/30
m ² Laminated plastic film laminated paper is cut into a 50 mm wide string by a slitter with a rotary blade, cut into 70 mm length, and then cut into fine powder by a machine made by Kiko Co., Ltd. ) (RC series) and cut 2mm
The mixture was passed through a mesh sieve of the pass, and those that did not pass through the sieve were further chopped to obtain shreds having a diameter of about 2 mm. Next, the shredded material was again passed through the same shredder for about 10 minutes and passed through a 16-mesh sieve to obtain a shredded plastic film-laminated paper having a median particle size of 0.2 mm. Observation of the shredded material with an electron micrograph showed the forms shown in FIGS. 1 and 2, and there were almost no whiskers larger than the particle size, and the whole was a smooth granular material.

Example 2 Low-density polyethylene (LDPE) containing 5 g / m ^{2 of} titanium oxide was laminated on the surface of paper made of hardwood kraft pulp having a basis weight of 170 g / m ² at 32 g / m ² , High density polyethylene (HDPE) and low density polyethylene (LDPE)
27g / polyethylene mixed with 70/30
m ² laminated with plastic film laminated paper was cut with the width 50mm string-like in slitter of the rotary blade is to cut it to length 70 mm, similarly, thickness 60
A μm polyethylene film was formed into a string having a width of 50 mm with a slitter equipped with a rotary blade, and this was cut into a length of 70 mm to obtain two types of fragments. These two materials were blended in the proportions shown in Table 1 and a film mill (shredder) (R
C series), sieve through a 2 mm pass mesh sieve, and further cut through those that do not pass through the sieve to obtain shreds having a diameter of about 2 mm. Next, the shredded product was again passed through the same shredder for about 10 minutes and passed through a 16-mesh sieve to obtain a shredded plastic film laminated paper having a median value of 0.2 mm in particle size. Either of the eight types of blends were equally chopped and blended without any bias. The state of the beard of the shredded material is the same as in Example 1, and the cut surface of the plastic film is also cut cleanly without stretching the polyethylene like a beard. Further, the plastic film laminated paper and the shredded material of the film do not form a dull, and the two are uniformly mixed.

[0040]

[Table 1]

Examples 3, 4, 5, 6 and Comparative Examples 1 and 2 In the means for producing shreds in Example 1, a film mill (shredder) made by Kiko (RC series) was again used. )
When shredding was performed, the shreds were cut with different shredding times and meshes attached to the bottom of the chamber to produce shreds having the median particle diameters of the shreds as shown in Table 2. 20 parts of the obtained shreds are blended with 80 parts of the low-density polyethylene resin, and melted at a temperature of 160 to 200 ° C. using a TEM-35B twin screw extruder manufactured by Toshiba Machine Co., Ltd. The mixture was kneaded to obtain a synthetic resin composition. The ease of kneading (kneading productivity) according to the particle size of the shredded material and the kneading state of the synthetic resin composition were observed. Table 2 shows the results.

[0042]

[Table 2]

Example 7 The shredded material obtained in Example 3 was mixed with the composition shown in Table 3 (mass ratio).
Then, using a TEM-35B twin screw extruder manufactured by Toshiba Machine Co., the mixture was melt-kneaded at a temperature of 160 ° C to 200 ° C to obtain a synthetic resin composition. Observation of the resulting synthetic resin composition with a microscope revealed that the paper component was in a preferable melt-kneaded state with the blended low-density polyethylene.

[0044]

[Table 3]

Example 8 The shredded material obtained in Example 1 was mixed with a polypropylene resin in Table 4.
Was melt-kneaded at a temperature of 160 ° C to 200 ° C using a TEM-35B twin screw extruder manufactured by Toshiba Machine Co., to obtain a synthetic resin composition. Observation of the resulting synthetic resin composition with a microscope revealed that the paper component was in a favorable melt-kneaded state with the blended low-density polypropylene.

[0046]

[Table 4]

Example 9 Experiment Nos. 1 to 5 of the synthetic resin compositions obtained in Example 7
For 9, use a blown film forming machine (E50EXT type 50 mmφ blown film forming machine made by Modern Machinery Co., Ltd.)
A 200 μm film was formed. Among the obtained film films, the film of No. 1 was 30 μm, and the film of No. 2 was
The film of No. 3 is formed into a film having a thickness of 50 μm, is transparent and has no holes, and is not thick even in a portion containing paper components, and the film surface has a reproduced film feeling in which glossiness is suppressed. It became a film. No.4
The film of No. 5 was formed into a film having a thickness of 100 μm, and further became a translucent paper-like film having a reproduced film feeling. The films of Nos. 6 to 9 were formed to a thickness of 200 μm, and the resulting films had a translucent or opaque paper texture (paper-like). It was a good film.
Further, a polyethylene film having the water resistance of the polyethylene resin was obtained, and a film having relatively high tear strength was obtained.
For Nos. 10 to 15, sheets having a thickness of 500 μm were prepared using a T-die extruder manufactured by Toshiba. Even if the paper component was large, the surface was a homogeneous sheet without irregularities due to debris, and as the paper component was increased, a cardboard-like sheet with higher paper texture was obtained.

Example 10 A flat molded article having a width of 80 mm, a length of 150 mm and a thickness of 2 mm was molded from the synthetic resin composition obtained in Example 7 using an IS90B type injection molding machine manufactured by Toshiba Machine Co., Ltd. . The obtained plate-shaped molded product had a relatively high bending rigidity (strength). Further, the molded product had water resistance, and a molded product having a ceramic texture was obtained.

Example 11 The synthetic resin composition obtained in Example 8 was used for an IS90B type injection molding machine manufactured by Toshiba Machine Co., Ltd., and was 80 mm wide × 150 mm long ×
A flat molded product having a thickness of 2 mm was formed. With respect to the obtained flat molded product, a molded product having extremely high flexural rigidity (strength) was obtained. As in the case of Example 10, the molded article had water resistance, and a molded article having the texture of ceramics was obtained.

Example 12 The uniformly compounded shredded material obtained in Example 2 was heated to a temperature of 200 ° C. using a hot melt press-type compression molding machine.
A flat molded product having a width of 80 mm, a length of 120 mm and a thickness of 2 mm was molded. With respect to the obtained flat molded product, a molded product having extremely high flexural rigidity (strength) was obtained. This molded product had water resistance similarly to Example 10, and a molded product having the texture of ceramics was obtained.

Comparative Example 3 The polyethylene laminated paper used in Example 1 was replaced with a pulverizer (Victrimill) manufactured by Hosokawa Micron for 10 minutes for the film mill (RC series) manufactured by Kiko Corporation used in Example 1 for 10 minutes. Crushed. Observation of the shreds with an electron micrograph showed the forms shown in FIGS. 3 and 4, in which the fibers of the paper were loose, whiskers were formed, and lumps were formed, and the whole was cottony.

Comparative Example 4 An attempt was made to melt and extrude the pulverized product obtained in Comparative Example 3 in the same manner as in Example 3 to obtain a synthetic resin composition. It could not be covered, and a synthetic resin composition could not be obtained.

Comparative Example 5 The polyethylene laminated paper used in Example 1 was replaced with the cleaning separator manufactured by Ein Engineering Co., Ltd. in place of the film mill (RC series) manufactured by Kiko Corporation used in Example 1. Was ground for 10 minutes. The shredded material was pulverized in the same manner as in Comparative Example 3 or more, and the fibers became fibril-like. Further, the laminating resin component was not cut, and the resin layer was separated from the flocculent paper component, leaving a non-uniform state.

Comparative Example 6 The polyethylene laminated paper used in Example 1 was pulverized for 10 minutes, with the exception that the powder mill (RC series) manufactured by Kiko Corporation used in Example 1 was replaced with a pulverizer manufactured by Katakura Kogyo. The shredded material was pulverized in the same manner as in Comparative Example 3 or more, and the fibers became fibril-like.

Comparative Example 7 The polyethylene laminated paper used in Example 1 was pulverized for 10 minutes using a pulverizer manufactured by Horai. The pulverized product was pulverized in the same manner as in Comparative Example 3, and the fibers became fibril-like.

[0056]

As shown in the examples and FIG. 1, the obtained finely chopped material has almost no whiskers from a fine cross section, so that the finely chopped material is small and the shredded material is dry. Therefore, the compounding with the synthetic resin is easy, and the shredded material has an appropriate size, so that the resin composition after kneading with the synthetic resin is also smooth.

On the other hand, in the pulverizers of Comparative Examples 3 to 5, when the polyethylene laminated paper is pulverized, a shear is applied between the fixed blade and the rotary blade (rotor), and impact pulverization is applied. It loosens and becomes cotton-like, and produces a liquor that is difficult to knead with the resin. In Comparative Examples 1 and 2, since the particle size of the shredded material was not appropriate, the productivity of the resin composition and the obtained resin composition were not smooth.

[Brief description of the drawings]

FIG. 1 is an electron micrograph of a shredded plastic film-laminated paper of the present invention in which paper fibers do not appear in a whisker shape from a cut surface.

FIG. 2 is an enlarged photograph of a cut surface of FIG.

FIG. 3 is an electron micrograph of a crushed plastic film-laminated paper material other than that of the present invention in which paper fibers are defibrated and whiskers are generated, in a false state.

FIG. 4 is an enlarged photograph in which the fibers of FIG. 3 are intertwined.

FIG. 5 is a sectional view of a shredding cutter having a fixed blade and a rotary blade used in the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Rotary blade 2 Fixed blade 3 Hopper inlet 4 Sieve at the bottom of chamber 5 Inner wall of chamber

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) C08J 3/12 C08J 3/12 A 4J002 5/18 CES 5/18 CES C08L 97/00 C08L 97/00 101 / 00 ZAB 101/00 ZAB // B29K 23:00 B29K 23:00 (72) Inventor Minoru Fujiyama 135, Kashiwazaki, Iwatsuki-shi, Saitama Polypolik Kogyo Co., Ltd. (72) Inventor Masanori Kimura 135, Kashiwazaki, Iwatsuki-shi, Saitama Address Polycall Kogyo Co., Ltd. F-term (reference) 4D004 AA07 AA12 BA07 CA04 CA14 CA15 CA22 CA45 CB13 DA10 DA20 4D065 CA12 CC01 DD18 DD26 EB12 EC09 ED23 4F070 AA02 AA13 AA15 AA16 AA47 AB09 AB11 AB26 AC36 AC40 AC47 AC52 DA 4F071 AA09 AA15 AA18 AA19 AA20 AA43 AF30 AH04 BA01 BB06 BB09 BC01 4F301 AA12 AD10 BA17 BA21 BA25 BA29 BC13 BC14 BD07 BD08 BE15 BE18 BE30 BF12 BF15 BF16 BF32 4J002 AB01Y BB03W BB03X BB05W BB05X BB12W BB15W BB15X CF03W CF03X FD170 GG00

Claims (18)

[Claims] 1. A shredded plastic film-laminated paper having a thin cross section in which paper fibers are not formed in a whisker shape, and having a particle size of 0.05 mm to 0.1 mm.
A shredded plastic film laminated paper having a center value in a range of 3 mm. 2. The shredded plastic film laminated paper according to claim 1, wherein the paper is a plastic film laminated paper coated on one or both sides with a polyolefin resin. 3. The shredded plastic film-laminated paper according to claim 1, wherein the shredded plastic film-laminated paper and the plastic film are uniformly mixed. 4. The thickness of the laminating layer of the plastic film laminated paper is 3 μm to 500 μm, and the thickness of the paper is 40 μm.
3. The method according to claim 1, wherein the thickness is in the range of μm to 1000 μm.
Or a shredded plastic film laminated paper according to 3. 5. A method for producing a chopped plastic film laminated paper, wherein the plastic film laminated paper is cut using a cutter having a fixed blade and a rotary blade so that the fiber of the paper is not broken at the cut surface. . 6. A plastic film laminated paper,
Using a cutter having a fixed blade and a rotary blade installed in the chamber, the paper fiber was cut on the cut surface so as not to be defibrated, and the shredded material was cut to a predetermined particle size and attached to the bottom of the chamber. A method for producing a shredded plastic film-laminated paper, wherein the shredded material has a particle size not smaller than a predetermined value by being discharged through a mesh and out of a chamber. 7. A plastic film-laminated paper and a plastic film are co-cut by using a cutter having a fixed blade and a rotary blade so that the paper fibers are not defibrated and the film is not bearded. A method for producing a shredded plastic film laminated paper, wherein the shredded material is produced while mixing uniformly to an arbitrary composition ratio. 8. The shredded plastic film-laminated paper according to claim 5, wherein the particle size of the shredded plastic film has a median value in a range of 0.05 mm to 0.3 mm. Method of manufacturing a product. 9. The method according to claim 5, wherein the cutter is a cutter having a plurality of fixed blades and a plurality of rotary blades. 10. The paper according to claim 5, wherein the paper is a plastic film laminated paper coated on one or both sides with a polyolefin resin.
A method for producing a shredded plastic film-laminated paper according to the above. 11. The thickness of the laminating layer of the plastic film laminated paper is 3 μm to 500 μm, and the thickness of the paper is 4 μm.
The particle size is 0 μm to 1000 μm.
The method for producing a chopped plastic film-laminated paper according to 6, 7, 8 or 10. 12. A synthetic resin composition obtained by granulating the shredded plastic film laminated paper according to claim 1, 2 and 4 together with a synthetic resin. 13. A synthetic resin blended composition obtained by granulating the shredded plastic film laminated paper of claim 3 without newly blending a synthetic resin. 14. The mixing ratio of paper component / synthetic resin is 0.05.
The synthetic resin composition according to claim 12 or 13 for molding a transparent film or a translucent film having a ratio of /99.95 to 2/98. 15. The mixing ratio of paper component / synthetic resin is 2/98.
The synthetic resin composition according to claim 12 or 13 for forming a translucent or opaque film having a paper-like or paper texture of 60/40. 16. The mixing ratio of paper component / synthetic resin is 1/99.
The synthetic resin composition according to claim 12 or 13, which is used for an extrusion molding process having a particle size of from 90/10. 17. A transparent or translucent film formed using the synthetic resin composition according to claim 14. 18. A translucent or opaque film having a paper texture formed using the synthetic resin composition according to claim 15.