JPS58107314A - Manufacture of polyolefin resin sheet including paper material - Google Patents

Abstract

PURPOSE:To reuse chips of a composite material of thermoplastic resin and paper material and to extrusion mold the captioned sheet by further adding the same resin to a pellet which is produced by adding polyolefin resin to the chips and kneading the mixture. CONSTITUTION:After (A) a composite material of thermoplastic resin and paper material (e.g., foamable polyolefin is laminated on a cardboard or the like) is formed to chips (preferably divided into squares of 2-50mm.), (B) polyolefin resin is added so that the content of the paper material becomes lower than 50% (hereinafter %) by weight in the chips, the mixture is kneaded at a temperature of ordinarily 80-200 deg.C, and is pelletized. Subsequently, the resin B is added so that the content of the paper material becomes lower than 40% in the pellet, and the mixture is then extrusion molded, thereby obtaining the objective sheet. EFFECT:The sheet in which the surface is smooth and the paper material is uniformly dispersed can be obtined. Resources can be reused.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing a polyolefin resin sheet containing paper material, and in particular to a method for manufacturing a polyolefin resin sheet containing paper material, in particular a method for producing a large amount of paper material by recycling the waste of a composite of a thermoplastic resin such as a structured polyolefin foam and paper material. The present invention relates to a method suitable for producing a polyolefin resin sheet containing.

In recent years, composites of thermoplastic resins such as polyolefin foams, striped polyolefin foams, etc. and paper materials such as cardboard, cardboard, etc. have been used in various fields as packaging materials, insulation materials, cushioning materials, interior materials for automatic military vehicles, etc. Lots of Kl! ! came to be used. As a result, a large amount of waste from such composites is being disposed of as crab scrap or used scrap, which can only be disposed of by dumping it in a landfill or by incinerating it. Some experiments have been carried out on an experimental scale to peel off the thermoplastic 1IiJIl and paper material and recycle them separately, but this requires a large amount of cost and has not been put to practical use. There was no V%.

Then, the composite waste is pulverized to its original size without peeling, and the pulverized material is exposed to the heat generated by the constituent materials of the composite.
A new blend of the same resin as the one-sided resin as the main component is added to the extrusion mold after extrusion and extruded into a sheet (attempts have been made, but have not been successful. In the extruder involved, the paper material is considered to be rounded and not sufficiently dispersed in the resin.

As a result of intensive research in light of the current situation, the present invention has been developed by extrusion molding a composite material consisting of paper material and Natsumachi plastic bark to create a polyolefin tree containing paper material. A method of manufacturing a sheet is provided.

That is, the present invention combines heat-resistant w fat, paper material, and OI [combination into chips, and the content of paper material in the chips! sO weight -
Add polyolein resin as shown below, mix the chip and the polyolefin resin, make it into pellets, and add polyolefin*m to the pellets so that the paper content is 40% by weight or less. In addition, the method for producing a polyolefin resin sheet including a paper material includes extrusion molding the pellets and the polyolefin resin into a sheet using an extruder as a 4I mold.

The composite used in the present invention is a linate product, which is a composite of a thermoplastic II material such as a polyolefin foam, a polyolefin, a cyclized vinyl resin, or a thermoplastic rubber, and a paper material such as gunboard or cardboard. The ratio of the thermoplastic resin and paper material constituting the composite is limited to the sleeve.

In the present invention, the Koro composite is used in the form of a chip with a size of about 50m5+M or less on each side. There is no particular limit to the lower limit, but it is usually about 2 angles. With a chip larger than about 5 Osus square, the next fiL practice will be difficult.

It's all mixed up with this kind of chip! Since polyolein 11111t was extremely difficult to form, polyolein 11111t was newly added and kneaded with a roll or the like. The amount of polyolein 411 that can be kneaded varies depending on the amount of paper material contained in the chip. Chip and polyolefin resin and O
If the total amount of paper material Ot is sO weight, m kneading machine is possible.

Needless to say, the kneaded Kaede f-Hiro composite, which differs depending on the polyolefin mm of 1111, is approximately @O ~ = 0
It is 0°C. fltiII multi-temperature ^(Even if the total amount of chips and polyoletwin 1M tumor is used, the paper material O content is about 5
If the weight exceeds 0 weight, it becomes difficult to obtain sufficient ta@.

Next, the thus kneaded mixture (MJ) is pelletized into pellets. Although the pellet size BII# is not constant, it will be fed together with the polyolefin horizontal pellet for extrusion, so it is better to have the same diameter for both pellets.

Usually the size of polyolefin resin pellet is about 8-1m.
Since the temperature is +, it is preferable to use the kneaded pellets at this high temperature. 10) By extrusion molding, obtain V-) with a smooth surface and pulverized paper material in which the paper material is uniformly dispersed. When the content of O paper material in the sheet is about 40% by weight or less, polyolefin resin must be added so that the content of O paper material in the sheet is about 40% by weight or less. In this case, the crushed pieces of paper O are scattered on the surface of the v-t, and the narrow, flat, flat surface becomes unbearable. % or less, extrusion molding can be performed on the smooth surface of one sheet of Group 1G and 11 Kagome.

In addition, the polyolefin *m that is blended at the time of the above-mentioned process and the extrusion process is used as the virgin virgin**a.
This means that even so-called exogenous polyolefin tree trout can be used in the same machine.

9. Since the paper material returned by this shaft is evenly dispersed, the paper material that has been crushed is evenly dispersed, so the paper material can be used as a single piece of paper.

In addition, it can be processed into thermoforming such as pressure molding and vacuum layering, so it can be processed into 4-packs, trays, etc.

Therefore, the polyolein resin sheet containing the paper material according to the present invention is often used with a content of O paper material Oi & content in the ν-t depending on the purpose of convenience, so that the content of paper material in the pellet is approximately 40%. ~If you stock up on sO weight 910 pellets, you can make paper materials by simply changing the amount of polyolefin resin blended according to the above purpose.
It is very convenient to produce different types of seaweed with different contents.

The content of paper material in Rimasi pellets is approximately 40 ~ sO weight -
For making berets, it is easy to knead the pellets by returning them from composite chips to a embroidery, and by adding polyolefin resin to these pellets and extruding them into sheets, the paper material content can be reduced. is 4016 or less and various sheets are used for L
can be obtained by

It is possible to extrude and ring-form sheets into sheets using this pellet without adding new pellet-expanded polyolefin resin with a paper content of 401s or less. Due to the lubricating action of the resin, the dispersibility of the paper material in the material becomes noticeably better (in cases where extrusion molding is not added). Even for pellets with a material content of 40% or less, it is preferable to add a polyolefin resin to the extrusion molding process.

Next, what about the present invention? 1 is shown. (Hereinafter, "-" means "weight.") JilpH 5 to 50% of scraps of a laminated composite sheet made of a polyethylene sheet and a cardboard paper composited by heat fusion at the weight ratio shown in Table 1.
Cut into 10111 square steps.

Table 1 Next, the chips of M1 in Table 1 and polyethylene were mixed so that the cardboard paper content in the total of both was sK as shown in Table 2, and rolled at about 120°C. I did some kneading. As a result, mark O if there is sufficient crosstalk.
Items that are difficult or inadequate are also marked with an X in Table 2.9.

Table 2 (Beret people) In addition, 5. After Muro and Hiroshi died on the 7th grade, they each changed to F14 and M11 square berets. These pellets are collectively called pellet people.

Ma, in the case of #I3 table and In41, 42 in the 1st ff.
For 0 chips, the /# & 2 chips and polyethylene are mixed so that the content of cardboard paper in the total of both is 9- as shown in Table 3, and about 12
Roll kneading was carried out at 0°C. The results are also accepted with the same evaluation as in Table 2.

Table 3 (Bellet B) The kneaded grains of Groups 2 to 5 were made into sheets and then made into pellets of approximately 4 squares. These pellets are collectively referred to as pellets) B.

Also, as shown in Table 3 and V4, the 13 chips in Table -1 were evaluated for mixed IIIA by changing the cardboard content (a) as shown in Table 4. The results are also shown in Table 4.

Table 4 (Pellet C) In addition, the pellets 1 to 4 of the ampere were formed into sheets and made into pellets of about 4 square meters each. These pellets are collectively referred to as pellet C.

Next, using pellets No. 15 in Table 2 (hereinafter referred to as pellets A1b) and changing the blending amount of polyethylene as shown in Table 5, the pellets were put into the hopper of an extruder and passed through the die of Guislit 2 Soho. I experimented with extruding it into a sheet. ○ If the surface is smooth and the extrusion molding is approximately 2uOV-),
Marked with X indicates that only sheets in which the crushed cardboard pieces are not evenly distributed and are formed unevenly can be extruded and are round.
Indicated with a mark. In addition, I also wrote down the content of cardboard abrasive in the extrudate (■) to my colleague.

Table 5 Also, an experiment similar to the sheet extrusion experiment in Table 5 above was conducted using pellets 15 in Table 2 (hereinafter referred to as pellet A% group 7).
, #E31e medium A2 medium SO2 (hereinafter referred to as Perez) B%/I
62), pellets numbered 13 in Table 3 (hereinafter referred to as Berets)
B, A3) in Table 4 / I61 Beret (hereinafter referred to as
Table 6-10I! Each was promoted to

Table 6 Table 7 Table 8 Table Ig 9 Table 10 & 1 1MH2 Cross-linked polyethylene foam sheet, membrane paperboard and thermoplastic rubber (hereinafter referred to as TPR) at the weight ratio shown in Table 11
were composited in this order with heat MI511 and cut into chips of the size shown in the table.

11th % M11 In the table / I61 chip and polyethylene are blended so that the content of the cardboard paper in the total of both is - shown in No. 129, and the mixture is heated to about 130℃.
I did roll kneading.

As a result, those that were sufficiently kneaded were marked O, and those that were hardened or insufficiently kneaded were marked tX in the @12 table.

Similarly, the chipm 2°/I63 in Table 11 was also kneaded, and the results are shown in Tables 13 and 14.
Each is shown in the table.

Table 12 (Pellet D) Table 13 (Pellet G) 141! (Bellet F) Next, *XO pellet (hereinafter, pellet E%) in Table 13
/I61) and $1!14 Beret A3 in the table (
Below are pellets? , 43) respectively for 1 and 15.
As shown in the table and Table 16, an experiment was conducted in which the blended amount of polyethylene was changed and put into the hopper of the extruder, and a sheet was extruded from the goo of the goo slit 2. It was carried out in the same manner as i11.

The results are also listed in Table 15 and Table 16, respectively.

Evaluation of the quality of the sheet-like extrusion molding was also carried out in the same manner as in Meishiga 1.

Table 15 Table 16 Implementation ns Frame polypropylene foaming &- at the weight ratio shown in Table 1
), corrugated paper and vinyl chloride resin leather were composited in this order, and the scraps of the laminated composite foot were cut into 10 to 20 square steps.

#117 Next, the chip of %/Wh1 in Table 17 and polypropylene are blended so that the content of cardboard paper in the needles of both is - shown in Table 18, respectively, to about 160.
Roll kneading was carried out at ℃. As a result, those that were sufficiently kneaded were marked with a 6, and those that were difficult or insufficient were marked with an X in Table 18.

Similarly, the chip /I62 in Table 17 is also confused! The results are shown in Table 19.

Table 18 (Belet G) Table 19 (Belet H)
As shown in Tables 20 and 21, using Beret (hereinafter referred to as Beret H% 7164) of Cattle and Horse 4 in Table 19, and changing the compound lid of polypyrene or polyethylene as shown in Tables 20 and 21, Carrying out the fruit IIi, which is put into the hopper of the extruder and extruded into a sheet from the 2-day-old goo.
I did it in the same way. The result @20! and 9 listed in Table 21. Evaluation of the quality of sheet extrusion molding was also conducted in the same manner as in Actual A-1.

In all of Table 20, Table 21 and above, and Example 1.2.8, in the sheet-like extrusion molded products marked with a 0 mark, only crushed pieces of gunboard paper could be seen through inspection, and polyethylene in the layer , unbridged polyolefin foam, TEPR1 vinyl chloride resin leather, etc. were completely melted and completely fused with the compounded polyolefin, leaving no trace of any residue.

The present invention enables extrusion molding of a polyolefin resin sheet containing a large amount of paper material made by recycling OH4, a composite of heat-resistant resin and paper material. In contrast to conventional disposal methods such as dumping in landfills, the present invention makes it possible to reuse resources, and is of great industrial value.

Claims (2)

[Claims] (1) A composite of heat-resistant resin and paper material is made into chips, polyolefin resin is added to the chips so that the content of paper material is 50 Ng- or less, and the chips and Satsuma polyosifine w fat are kneaded. ), then pelletize it), add polyolefin W* to the pellet so that the paper content is 40% by weight or less, and extrude the pellet and polyolefin resin into a sheet using an extruder. A method for producing a polyolefin resin sheet containing a large amount of paper material characterized by a moldable layer. (2) The above-mentioned thermoplastic resin is composed of one or more of polyolefin foam, polyolefin resin, chloride, vinyl resin, and thermoplastic rubber! A method for producing a polyolefin resin sheet comprising the paper material according to item 1, in which the desired range is %rr's of mold. (83) The method for producing a polyolefin resin sheet containing paper material according to claim 2, wherein the polyolefin foam is a crosslinked polyolefin foam.